JP2016124326A - Wiper arm coupling mechanism of wiper blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure of a wiper arm coupling mechanism of a wiper blade which can make a support member having an abutment part abutting on an internal face of a U-shaped portion of a wiper arm adaptable to a plurality of kinds of wiper arms without exchange.CONSTITUTION: A support member has a plurality of kinds of adaptation means which are adaptable to wiper arms of a plurality of kinds of standard sizes, and a lower abutment part of the support member has a first lower abutment part which abuts on the wiper arm of the first standard size, and a second lower abutment part which abuts on at least either of the wiper arm of the second standard size and the wiper arm of the third standard size.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wiper blade coupling mechanism to a wiper arm having a tip curved in a U shape in a wiper device used for wiping a window glass or the like of a vehicle.

In Japanese Utility Model Publication No. 3-49081, a wiper arm 1 having a U-shaped tip is rotatably supported by a first pin 102 provided on the wiper blade 101 as shown in FIG. A support member 103 having a complementary support surface on the inner surface of the character-shaped portion 11 and a second pin 104 spaced from the first pin 102 in the longitudinal direction of the wiper arm 1 are rotatably supported. A retaining surface 105 that is substantially complementary to the outer curved portion 12 of the U-shaped portion 11 of the wiper arm 1 supported by the support member 103 is provided, and a part of the retaining surface 105 elastically extends from the outer curved portion 12. The structure which has the restraining member 106 (lid member) made to be able to bend in the direction to leave | separate is disclosed.

However, the wiper arm has a plurality of standard sizes (9 × 4: U-shaped portion width 9 mm, vertical inner dimension 10.7 mm, wall thickness 4 mm, 9 × 3.5: U-shaped portion width 9 mm. , The inner dimension in the vertical direction is 6.7 mm, the wall thickness is 3.5 mm, 9 × 3: the width of the U-shaped portion is 9 mm, the inner dimension in the vertical direction is 6.7 mm, and the wall thickness is 3 mm. And a fixing method using a detention member (lid member), a single support member supports only a standard size of 9 × 3 and a standard size of 9 × 3.5, or each of the U-shaped portions of the wiper arm. A special support member corresponding to the size is required, and the 9 × 4 standard size support member 103a for fixing the 9 × 4 standard size wiper arm 1a shown in FIG. Trying to fix the wiper arm 1c Then, as shown in FIG. 17, the inner dimension of the U-shaped portion 11c of the wiper arm 1c is insufficient, and conversely, the 9 × 3 standard size wiper arm 1c shown in FIG. 18 is fixed. When trying to fix the wiper arm 1a having the standard size of 9 × 4 to the support member 103c for the standard size, the height of the inner surface of the U-shaped portion 11a of the wiper arm 1a is excessive as shown in FIG. In addition, since the retaining member 106 (lid member) and the outer surface of the U-shaped portion 11a of the wiper arm 1a interfere with each other, in such a conventional structure, a standard size of at least 9 × 3 is required with one type of support member. And a 9 × 4 standard size wiper arm could not be adapted.

Japanese Utility Model Publication No. 3-49081

The wiper arm coupling mechanism of the wiper blade of the present invention has a structure that can be adapted to a plurality of types of wiper arms without replacing the support member having a contact portion with the inner surface of the U-shaped portion of the wiper arm. Let it be a challenge.

The wiper blade coupling mechanism of the wiper blade of the present invention is a wiper blade having a coupling mechanism with a wiper arm whose tip is curved in a U shape, and a first shaft support portion is formed at a substantially central portion in the longitudinal direction. A wiper blade main body on which a first pin is formed, a second pin that forms a second shaft support is disposed, and a support member that is rotatably supported by the first pin with respect to the wiper blade main body. A lid member rotatably supported by the second pin with respect to the wiper blade body, and the support member has a contact portion with the inner surface of the U-shaped portion of the wiper arm. The lid member has an abutting portion that abuts against an outer curved portion of the U-shaped portion of the wiper arm supported by the supporting member, whereby the wiper arm is provided on the supporting member. While wearing the, when closing the lid member configured to prevent disengagement from the mounting state of the wiper arm relative to the support member.

The abutting portion of the support member abuts at least an upper abutting portion that abuts on the inner surface of the flat portion at a position higher than the U-shaped portion of the wiper arm, and an inner surface of the curved position of the U-shaped portion of the wiper arm. A curved abutting portion and the lower abutting portion that abuts against the inner surface of the flat portion at a lower position than the U-shaped portion of the wiper arm, and the support member is compatible with a plurality of standard size wiper arms. A first standard size of the wiper arm is composed of a wiper arm of 9 × 4 (U-shaped portion width 9 mm, vertical inner dimension 10.7 mm, wall thickness 4 mm), The second standard size is a wiper arm having a size of 9 × 3.5 (the width of the U-shaped portion is 9 mm, the inner dimension in the vertical direction is 6.7 mm, the wall thickness is 3.5 mm), and the third standard size is 9 × 3 (U-shaped part width 9mm, vertical direction A plurality of fitting means, wherein the lower contact portion of the support member has a first lower contact portion that contacts a wiper arm of a first standard size. And a second lower abutting portion that abuts on at least one of the second standard size wiper arm and the third standard size wiper arm.

Furthermore, the plurality of adapting means are characterized in that the second lower contact portion is formed at a position above the first lower contact portion and close to the curved contact portion. To do.

Further, in the plurality of adapting means, the curved contact portion of the support member contacts the inner surface of the curved position of the U-shaped portion of the first standard size wiper arm, and the second standard size wiper arm. And an upper curved contact portion formed so as not to contact the inner surface of the curved position of the U-shaped portion of at least one of the standard size wiper arms, and the first standard size The curved position of the U-shaped portion of the standard size of at least one of the second standard size wiper arm and the third standard size wiper arm does not contact the inner surface of the curved position of the wiper arm. And a lower curved contact portion formed so as to contact the inner surface.

Further, the inner surface of the curved position of the U-shaped portion of the first standard size wiper arm contacts the upper curved contact portion of the support member, and the second standard size wiper arm and the third standard size wiper arm The inner surface of the curved position of the U-shaped portion of the standard size wiper arm is configured to come into contact with the lower curved contact portion of the support member, whereby the support member has the first standard size of the first standard size. The outer surface of the U-shaped portion of the wiper arm when the wiper arm of any of the standard sizes of the wiper arm, the wiper arm of the second standard size, and the wiper arm of the third standard size is mounted. The position of the bending portion is configured to be able to maintain a contact state with the contact portion of the lid member when the lid member is closed, and to be elastically deformed of the lid member. Do

According to the wiper blade coupling mechanism of the wiper blade of the present invention, the support member having a contact portion with the inner surface of the U-shaped portion of the wiper arm is a plurality of types of wiper arms without replacing the support member by a plurality of adapting means. Therefore, the mounting workability is improved, and the wiper blade can be prevented from dropping or malfunctioning due to a mounting work mistake.Furthermore, since only one type of support member is required, the versatility is high. It is possible to reduce the cost of parts and at the same time avoid the risk of losing unused parts.

The reference sectional view showing the composition outline concerning the example of the present invention. Explanatory drawing of the wiper arm of the 1st standard size which can be mounted | worn with this invention. Explanatory drawing of the wiper arm of the 2nd standard size which can be mounted | worn with this invention. Explanatory drawing of the wiper arm of the 3rd standard size which can be mounted | worn with this invention. The principal part sectional drawing which shows the mounting process of the wiper arm of the 1st standard size which concerns on the Example of this invention. FIG. 6 is an essential part cross-sectional view showing the next stage of the mounting process of FIG. 5. FIG. 7 is an essential part cross-sectional view showing a next stage (attachment state) of the attachment process of FIG. 6; The principal part enlarged view of FIG. The principal part sectional drawing which shows the mounting process of the wiper arm of the 3rd standard size which concerns on the Example of this invention. FIG. 10 is an essential part cross-sectional view showing the next stage of the mounting process of FIG. 9; FIG. 11 is an essential part cross-sectional view showing a next stage (attachment state) of the attachment process of FIG. 10; The principal part enlarged view of FIG. The principal part sectional drawing which shows the mounting state of the wiper arm of the 2nd standard size which concerns on the Example of this invention. The principal part enlarged view of FIG. Reference sectional drawing which shows a prior art. FIG. 7 is a reference cross-sectional view showing a mounting state of a wiper arm having a first standard size (9 × 4) in the prior art. FIG. 6 is a reference diagram illustrating a state in which a support member for a first standard size (9 × 4) and a wiper arm of a third standard size (9 × 3) are overlapped and plotted in the prior art. FIG. 9 is a reference cross-sectional view showing a state where a wiper arm having a third standard size (9 × 3) is mounted in the prior art. FIG. 6 is a reference diagram showing a state in which a support member for a third standard size (9 × 4) and a wiper arm of a first standard size (9 × 3) are overlapped and plotted in the prior art.

As shown in FIGS. 1 to 14, an embodiment of the wiper blade coupling mechanism of the present invention is a wiper blade 2 having a coupling mechanism with a wiper arm 1 whose tip is curved in a U shape. A wiper blade body 5 in which a first pin 3 that forms a first shaft support, a second pin 4 that forms a second shaft support, and the first pin are disposed at a substantially central portion in the longitudinal direction. 3, a support member 6 that is rotatably supported by the wiper blade main body 5, and a lid member 7 that is rotatably supported by the second pin 4 with respect to the wiper blade main body 5. The support member 6 has a contact portion with the inner surface of the U-shaped portion 11 of the wiper arm 1, and the lid member 7 is U-shaped of the wiper arm 1 supported by the support member 6. The outer curved portion 12 of the portion 11 Configured to prevent separation of the wiper arm 1 with respect to the support member 6 by an elastic deformable resin spring portion includes a contact portion 71 of the.

The abutting portion of the support member 6 includes an upper abutting portion 61 that abuts at least the inner surface of the flat portion at a position higher than the U-shaped portion 11 of the wiper arm 1 and a curve of the U-shaped portion 11 of the wiper arm 1. A curved abutting portion 62 that abuts against the inner surface of the position, and the lower abutting portion 63 that abuts against the inner surface of the flat portion at a lower position than the U-shaped portion 11 of the wiper arm 1.

The support member 6 has a plurality of fitting means adapted to fit a plurality of standard size wiper arms 1, and the first standard size of the wiper arm 1 adapted to the wiper arm coupling mechanism of the wiper blade 2 of the present invention is shown in FIG. As shown in FIG. 3, the wiper arm 1a is 9 × 4 (U-shaped portion width 9 mm, vertical inner dimension 10.7 mm, wall thickness 4 mm), and the second standard size is as shown in FIG. It consists of a wiper arm 1b of 9 × 3.5 (U-shaped portion width 9 mm, vertical inner dimension 6.7 mm, wall thickness 3.5 mm). The third standard size is 9 as shown in FIG. It consists of a wiper arm 1c of × 3 (U-shaped portion width 9 mm, vertical inner dimension 6.7 mm, wall thickness 3 mm).

In the plurality of adapting means, the lower contact portion 63 of the support member 6 is in contact with the first standard size wiper arm 1a, and the second standard size wiper arm 1b. And a second lower contact portion 63b that contacts at least one of the standard sizes of the third standard size wiper arm 1c, and the second lower contact portion 63b, It is formed at a position above the lower contact portion 63a and close to the curved contact portion 62.

Further, in the plurality of adapting means, the curved contact portion 62 of the support member 6 contacts the inner surface of the curved position of the U-shaped portion 11a of the wiper arm 1a of the first standard size, and the second standard. An upper curve contact formed so as not to contact the inner surface of the U-shaped portion 11b of the size 1b wiper arm and the inner surface of the U-shaped portion 11c of the third standard size wiper arm 1c. The curved portion of the U-shaped portion 11b of the wiper arm 1b of the second standard size without contact with the inner surface of the curved position of the U-shaped portion 11a of the wiper arm 1a of the first standard size wiper. And a lower curved contact portion 62b formed so as to contact the inner surface of the curved position of the U-shaped portion 11c of the third standard size wiper arm 1c. The shapes of the upper curved contact portion 62a and the lower curved contact portion 62b do not necessarily have to be curved in an arc shape, and the U-shape of the wiper arm 1 is formed by the tips of the ribs and protrusions. You may form so that the inner surface of the curved position of the part 11 may be contact | abutted.

Further, the wiper arm 1a of the first standard size, the wiper arm 1b of the second standard size, and the wiper arm 1c of the third standard size are attached to the support member 6. Even when the arm is mounted, the position of the outer curved portion of the U-shaped portion of the wiper arm maintains the contact state with the contact portion 71 of the lid member 7 when the lid member 7 is closed. The position including the contact portion 71 of the lid member 7 is configured to be within a range where elastic deformation is possible.

The wiper blade coupling mechanism of the wiper blade of the present invention can be effectively used industrially as a wiper blade that can be adapted to a plurality of types of wiper arms.

1, 1a, 1b, 1c: wiper arm, 2: wiper blade, 3: first pin, 4: second pin, 5: wiper blade body, 6: support member, 7: lid member, 11, 11a, 11b, 11c: U-shaped part, 12: outer curved part, 61: upper contact part, 62: curved contact part, 62a: upper curved contact part, 62b: lower curved contact part, 63: lower contact Contact part, 63a: first lower contact part, 63b: second lower contact part, 71: contact part, 101: wiper blade, 102: first pin, 103: support member, 104: second Pin, 105: detained surface, 106: detained member

Claims (4)

In a wiper blade having a coupling mechanism with a wiper arm formed by bending the tip into a U shape,
A wiper blade main body in which a first pin that forms a first shaft support portion and a second pin that forms a second shaft support portion are disposed in a substantially central portion in the longitudinal direction;
A support member rotatably supported by the first pin with respect to the wiper blade body;
A lid member rotatably supported by the second pin with respect to the wiper blade body;
Have
The support member has a contact portion with the inner surface of the U-shaped portion of the wiper arm,
The lid member has an abutting portion that abuts against an outer curved portion of a U-shaped portion of the wiper arm supported by the support member, so that the lid member is mounted in the state where the wiper arm is attached to the support member. Configured to prevent the support member from being detached from the mounted state of the wiper arm,
The abutting portion of the support member abuts at least an upper abutting portion that abuts on the inner surface of the flat portion at a position higher than the U-shaped portion of the wiper arm, and an inner surface of the curved position of the U-shaped portion of the wiper arm. A curved abutting portion, and the lower abutting portion that abuts against the inner surface of the flat portion at a lower position than the U-shaped portion of the wiper arm,
The support member has a plurality of fitting means adapted to a plurality of standard size wiper arms,
The first standard size of the wiper arm is a wiper arm of 9 × 4 (U-shaped portion width 9 mm, vertical inner dimension 10.7 mm, wall thickness 4 mm),
The second standard size consists of a wiper arm of 9 × 3.5 (U-shaped part width 9 mm, vertical inner dimension 6.7 mm, wall thickness 3.5 mm),
The third standard size consists of a wiper arm of 9 × 3 (U-shaped part width 9 mm, vertical inner dimension 6.7 mm, wall thickness 3 mm),
The plurality of adapting means includes a first lower contact portion in which a lower contact portion of the support member contacts a wiper arm of a first standard size,
A second lower abutting portion that abuts at least one standard size of the second standard size wiper arm and the third standard size wiper arm;
A wiper arm coupling mechanism for a wiper blade characterized by comprising: The plurality of adapting means are characterized in that the second lower abutting portion is formed at a position above the first lower abutting portion and close to the curved abutting portion. The wiper arm coupling mechanism of the wiper blade according to Item 1 In the plurality of adapting means, the curved contact portion of the support member contacts the inner surface of the U-shaped portion of the first standard size wiper arm, and the second standard size wiper arm and the second standard size wiper arm An upper curved contact portion formed so as not to contact the inner surface of the curved position of the U-shaped portion of the wiper arm of the third standard size;
A U-shape of at least one standard size of the wiper arm of the second standard size and the wiper arm of the third standard size without contacting the inner surface of the curved position of the wiper arm of the first standard size A lower curved contact portion formed so as to contact the inner surface of the curved position of the shape portion;
The wiper blade coupling mechanism of a wiper blade according to claim 1 or 2, characterized by comprising: The inner surface of the curved position of the U-shaped portion of the first standard size wiper arm is in contact with the upper curved contact portion of the support member, and the second standard size wiper arm and the third standard size The inner surface of the curved position of the U-shaped portion of the wiper arm is configured to contact the lower curved contact portion of the support member,
In the case where any one of the standard size wiper arms, the second standard size wiper arm, and the third standard size wiper arm is attached to the support member. The position of the outer curved portion of the U-shaped portion of the wiper arm is
4. The structure according to claim 3, wherein the cover member can be maintained in contact with the contact portion of the cover member when the cover member is closed, and is elastically deformed of the cover member. Wiper blade wiper arm coupling mechanism

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