JP4114564B2 - Vertibra and clip base - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiper vertebra capable of changing a refill and a clip base attached to the vertebra.
[0002]
[Prior art]
A wiper blade for automobiles has a wiper blade rotatably attached to a wiper arm, and the wiper blade wipes raindrops attached to a front window or the like according to the movement of the wiper arm.
[0003]
In general wiper blades, in order to apply an even biasing force to the curved surface of the wiping surface, an arm holding mechanism in which a plurality of arms such as a primary lever, a secondary lever, and a yoke are assembled in a tournament shape, and a wiping surface are provided. It is comprised by the refill to wipe off. A clip base that engages with the tip of the wiper arm is provided substantially at the center of the primary lever.
[0004]
On the other hand, today, wiper blades in which a plurality of arms are eliminated have been devised (see, for example, Cited Document 1 and Cited Document 2).
[0005]
[Patent Document 1]
JP, 2002-53012, A Please refer to Drawing 1 and Drawing 7.
[Patent Document 2]
See FIG. 1 of Japanese Patent Laid-Open No. 2003-146190.
[0006]
[Problems to be solved by the invention]
However, when a clip base is attached to a wiper blade that has eliminated a plurality of arms, the wiper blade disclosed in Patent Document 1 positions the clip base using a protrusion formed on the body part of the vertebra. Therefore, the process of forming a protrusion with respect to the vertebra body part is required. In addition, even when the clip base is attached to the wiper blade disclosed in Patent Document 2, the clip base is positioned using the notch formed in the vertebra body part, so that a missing part is formed in the vertebra body part. There was a problem that a process to perform was necessary.
[0007]
In addition, the clip base disclosed in the cited document 1 and the cited document 2 is composed of a plurality of bahts having different shapes, so that there is a possibility that the number of parts increases and the manufacturing cost may increase. was there.
[0008]
The present invention has been made in view of the above problems, and in order to perform positioning of the clip base attachment, it is possible to further reduce the cost of parts without performing special processing on the main part of the vertebra. It is an object to provide a vertebra and a clip base that can be easily assembled.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 is a vertebra for holding a refill, and is a vertebra composed of a long plate curved like a bow to add a uniform urging force to the wiping surface. A main body, a clip base that is attached to the vertebra main body and engages with a wiper arm, and is attached to the vertebra main body to hold the refill in an exchangeable manner, and the longitudinal direction of the vertebra main body A holder for positioning the clip base, and the clip base is configured by a pair of base body portions connected at a center portion in the width direction of the vertebra body portion, and the pair of base body portions have the same shape. Yes,
Each base body portion of the pair of base body portions includes an engaging portion for connecting the base body portions to each other, and connecting the base body portions to each other so that the vertebra body portion is a pair of base body portions. A holding portion that is sandwiched and held from the width direction, and the engaging portion is formed in the engaging main body portion with an engaging concave portion that engages with an engaging convex portion formed in each base main body portion. An engaging convex portion that engages with the engaging concave portion is formed, and the engaging concave portion and the engaging convex portion are juxtaposed along the longitudinal direction of the base body portion. .
[0010]
According to a second aspect of the present invention, in the vertebra according to the first aspect, a locking claw is formed in the engaging convex portion, a locking groove is formed in the engaging concave portion, and one of the pair of clip bases The engaging claw of the one clip base engages with the engaging groove of the other clip base in a state where the engaging convex portion of the clip base is fitted into the engaging recess of the other clip base. characterized in that it.
[0013]
The invention according to claim 3 is a clip base that is attached to a vertebra main body made of a long plate curved like a bow in order to apply a uniform urging force to the wiping surface, and is a width direction of the vertebra main body. The base body portion is composed of a pair of base body portions that are connected at the central portion, and each base body portion includes an engaging portion for connecting the base body portions and the base body portions by connecting the base body portions to each other. A holding portion that holds the portion sandwiched between the pair of base main body portions from the width direction, and
The pair of base main body portions have the same shape, and the engaging portion includes an engaging concave portion that engages with an engaging convex portion formed on each base main body portion, and is formed on each base main body portion. An engagement convex portion that engages with the engaged concave portion is formed, and the engagement concave portion and the engagement convex portion are arranged side by side along the longitudinal direction of the base body portion. To do.
[0014]
According to a fourth aspect of the present invention, in the clip base according to the third aspect, a locking claw is formed in the engaging convex portion, a locking groove is formed in the engaging concave portion, With the engaging convex part of one clip base fitted in the engaging concave part of the other clip base, the engaging claw of the one clip base is engaged with the engaging groove of the other clip base. It is characterized by combining .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a vertebra according to the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a perspective view showing a vertebra 20 and a refill 10 according to the present invention. The vertebra 20 includes a vertebra main body 21, six holders 22, a spacer 23, and a clip base 24. .
[0018]
The vertebra main body 21 is made of a long metal plate having elasticity, and has a shape curved like a bow in the long direction. The vertebra main body 21 is provided with six convex portions 25 (including reference numerals 25a and 25b) at a constant interval L. The vertebra body part 21 is formed by flattening an elastic metal rod formed in a cylindrical shape in a radial direction. By processing in this way, it becomes possible to form a smooth cross-sectional shape that does not have corners, and when the center part of a long plate curved like a bow is pushed down and flattened, the vertebra body It becomes easy to equalize the urging force applied to the lower surface of the portion 21.
[0019]
2 to 6, the holder 22 has a hollow rectangular column with a notch formed in the bottom surface 30, and the hollow inner width length R <b> 1 is as shown in FIG. 7, as shown in FIG. 7. The width is defined to be the same as or slightly wider than the width R2. In addition, a fitting hole 32 into which the convex portion 25 is fitted is formed at the center of the upper surface 31 of the holder 22. The holder 22 is defined such that the length from the center of the fitting hole 32 to the end in the extending direction (longitudinal direction) side of the vertebra main body 21 is L5. The holder 22 is formed of a reinforced plastic or metal having a slight elasticity in consideration of attachment to the vertebra main body 21.
[0020]
The bottom surface 30 has a pair of bottom surface engaging portions 30a that have a substantially trapezoidal shape when viewed from the bottom, and a side engagement that has a U-shaped cross section with its end portion folded back to the top surface 31 side adjacent to the bottom surface engaging portion 30a. Part 30b. Further, inclined protrusions 35 that face each other are formed on the left and right side surfaces of the holder 22, and the distance between the tips of the inclined protrusions 35 that face each other decreases toward the upper surface 31 side from the side surface.
[0021]
As with the holder 22, the spacer 23 has a hollow rectangular column with a notch formed in the bottom surface 36. The hollow inner width R3 is a width R2 of the vertebra body 21 as shown in FIG. It is specified to be the same width or slightly wider. Further, the hollow inner height H1 is higher than the height H2 of the vertebra body part 21, and the vertebra body part 21 accommodated in the spacer 23 can freely move up and down when wiping the window surface. A gap 37 is provided. The gap 37 also has a role of securing a tilt angle of an edge portion 18 (described later) of the refill 10 at the time of wiping.
[0022]
As shown in FIG. 9, the clip base 24 includes two base body portions 43 and 43 ′ having the same shape and a U-shaped engaging portion 40 (see FIG. 1) that engages with a U-shaped hook at the tip of the wiper arm. It is configured. The base main body 43 is integrally formed with an upright portion 46 in which a through hole 45 through which the rivet 44 is inserted is formed, a seat portion 47 that supports the upright portion 46, and holding portions 48 that are formed on both sides of the seat portion 47. It is formed.
[0023]
The standing portion 46 is formed at the end portion of the seat portion 47 so that the side surface 46 a of the standing portion 46 and the side surface 47 a of the seat portion 47 are flush with each other. An engaging convex portion 50 and an engaging concave portion 51 are arranged side by side on the opposite side surface of the seat portion 47. A hook-like locking claw 52 is formed at the tip of the engaging convex portion 50. The engaging recess 51 has a shape that can be engaged with the engaging protrusion 50, and a locking groove (or locking hole) 53 in which the hook-shaped portion of the locking claw 52 is caught inside the engaging recess 51. Is formed.
[0024]
The holding portion 48 includes a holding arm 48 a that contacts the side surface portion of the spacer 23 installed in the vertebra main body portion 21 from the width direction and engages with the spacer 23 and the vertical portion main body portion 21 by engaging with the bottom end portion. ing.
[0025]
In the base main body 43, the inner width of the holding arm is defined as a length R5 that is half of the outer width R4 of the spacer 23, and the length in the longitudinal direction of the vertebra main body 21 is defined as a length L4. Has been.
[0026]
Since the base body 43 ′ has the same shape as the base body 43, the description thereof is omitted. A shaft hole through which the rivet 44 is inserted is formed in the U-shaped engaging portion 40.
[0027]
The refill 10 is a long rubber member having a head 11, a neck 12, and an edge 13 as shown in FIG. The head 11 is formed with an engaging groove 14 that engages with the bottom surface engaging portion 30 a of the holder 22. The edge portion 13 has an inverted triangular cross-sectional shape with the top located at the lower end, and wipes raindrops and the like by sliding on the window surface at the top.
[0028]
Next, a method for attaching the holder 22, the spacer 23, the clip base 24, and the refill 10 to the vertebra main body 21 will be described.
[0029]
First, the vertebra main body 21 is inserted from the side opening of the spacer 23, and the spacer 23 is moved to the central portion of the vertical sub bar main body 21. The spacer 23 moved to the central part of the vertebra body part 21 can move up and down to some extent because a gap 37 is provided in the spacer 23, but the internal width length R3 is the width of the vertebra body part 21. Movement in the width direction is restricted because it is the same width as the length R2 or only slightly wider.
[0030]
Next, the holder 22 is installed in the vertebra main body 21 such that the fitting hole 32 of the holder 22 is fitted into the convex portion 25 formed in the vertebra main body 21. When attaching the holder 22 to the vertebra main body 21, first, as shown in FIG. 7, the vertebra main body 21 is inserted into a space (hereinafter referred to as a lower space) 54 below the inclined projection piece 35 inside the holder 22. Let After the holder 22 is slid so that the convex portion 25 of the vertebra main body 21 is positioned directly below the fitting hole 32 of the holder 22, the inner upper surface 31 a of the holder 22 is brought into contact with the upper surface 21 a of the vertebra main body 21. Thus, a downward force is applied to the holder 22 and an upward force is applied to the vertebra body 21. Then, the side end portion 21 b of the vertebra main body portion 21 moves on the inclined surface of the inclined protrusion piece 35 to get over the front end portion of the inclined protrusion piece 35, and the lower surface 21 c of the vertebra main body portion 21 is at the front end portion of the inclined protrusion piece 35. While being supported, the convex portion 25 is fitted into the fitting hole 32 and fixed. In particular, the vertical bar main body 21 is processed by compressing a cylindrical elastic metal rod in the radial direction, and the side part 21b that comes into contact with the inclined projection piece 35 is formed of a smooth curved surface. The main body 21 can smoothly get over the inclined protrusion piece 35. Thus, when the convex part 25 of the vertebra body part 21 is inserted into the fitting hole 32 of the holder 22, the holder 22 is fixed to the vertebra part 21.
[0031]
After the six holders 22 and the spacers 23 are attached to the vertebra main body 21, the clip base 24 is installed in the central portion of the vertebra main body 21 via the spacers 23. The clip base 24 has the base main body 43 and the base main body 43 in the arms of the holding arms 48 a and 48 a ′ of the base main body 43 and the base main body 43 ′ while guiding the side surfaces of the vertebra main body 21 and the spacer 23. , And the engaging convex part 50 of the base main body part 43 is fitted into the engaging concave part 51 ′ of the other base main body part 43 ′ and the base main body part 43 is inserted into the engaging concave part 51 of the base main body part 43. The 'engagement convex portion 50' is inserted to connect the base main body 43 and the base main body 43 '. At this time, as shown in FIG. 8, the engaging claw 52 of the engaging convex part 50 is engaged with the engaging groove (or engaging hole) 53 ′ formed in the engaging concave part 51 ′, and the engaging convex part Since the 50 'locking claw 52' is engaged with a locking groove (or locking hole) 53 formed in the engaging recess 51, the base main body 43 and the base main body 43 'are firmly connected. The
[0032]
Further, due to the connection between the base main body 43 and the base main body 43 ′, the holding arm 48a and the holding arm 48a ′ sandwich and hold the vertebra main body 21 from the width direction (side).
[0033]
The U-shaped engagement portion 40 is disposed between the upright portion 46 and the upright portion 46 ′ facing each other, and the insertion holes 45 and 45 ′ of the upright portions 46 and 46 ′ and the shaft hole of the U-shaped engagement portion 40 are disposed. The U-shaped engaging portion 40 is rotatably attached to the base main body portions 43 and 43 ′ by inserting and crimping the rivets 44.
[0034]
When the clip base 24 is attached to the vertebra body part 21, the distance L between the convex part 25a and the convex part 25b is the length L4 of the clip base 24 and the length from the center of the fitting hole 32 of the holder 22 to the end part. Therefore, the end surface of the holder 22 comes into contact with the end surface of the clip base 24, and the holder 22 restricts the movement of the clip base 24 in the longitudinal direction.
[0035]
By attaching the holder 22 and the clip base 24 to the vertebra main body 21 so that the holder 22 and the clip base 24 come into contact with each other, without forming a positioning notch or a protrusion on the vertical bar main body 21, The clip base 24 can be fixed to a predetermined position of the vertebra main body 21 without providing a special member for positioning.
[0036]
Further, since the clip base 24 is configured by connecting the base body portion 43 and the base body portion 43 ′ having the same shape, even if the clip base 24 is composed of two bahts (body portions), the base body portion The mass productivity of 43 and 43 ′ can be increased, and the product cost can be reduced. Furthermore, since it is not necessary to use other members (for example, fastening members) to connect the base body portions 43 and 43 ', an increase in the number of parts and assembly man-hours can be suppressed, and not only the product cost but also the assembly It is also possible to reduce work labor.
[0037]
Further, when the clip base having the holding arms on the left and right sides in the width direction is integrally formed, the clip base is inserted between the holding arms facing each other on the clip base, and the clip base is placed at the center of the bar bracket main body 21. It is necessary to attach the holder 22 after sliding to the portion, but when the clip base 24 is constituted by a pair of base main body portions 43 and 43 'as in the clip base according to the present invention, the vertebra main body portion Since the clip base 24 can be attached to the vertebra body part 21 by connecting the base body parts 43 and 43 'so as to sandwich the part 21, the burden of the assembly process can be reduced.
[0038]
Further, by inserting the convex portion 25 of the vertical bra main body portion 21 into the fitting hole 32 of the holder 22, it is ensured that the vertical member main body portion 21 does not use other members for fixing the holder 22 to the vertical rib main body portion 21. It can be fixed.
[0039]
After fixing the six holders 22, the spacers 23, and the clip base 24 to the vertical bar body 21, the head 11 of the refill 10 is inserted into the lower space 54 of the holder 22 from the longitudinal direction of the vertical bar body 21. Let By inserting the refill 10 into the lower space 54 of the holder 22, as shown in FIGS. 11 and 12, the bottom surface engaging portion 30a enters the engaging groove 14 of the head portion 11 of the refill 10, and the bottom surface engaging portion 30a. The upper surface of the head 11 engages with the lower surface of the head 11, and the side surface of the head 11 abuts on the side engaging portion 30 b of the holder 22 to restrict the movement in the lateral direction (the width direction of the vertebra main body 21). For this reason, the horizontal and vertical movements of the head 11 of the refill 10 can be restricted by the bottom surface engaging portion 30 a and the side engaging portion 30 b of the holder 22.
[0040]
Further, with respect to the longitudinal direction of the refill 10, the refill 10 can be easily removed from the holder 22 by sliding, so that the refill 10 can be easily replaced. Furthermore, when the refill 10 is deteriorated, it is only necessary to replace the refill 10 without replacing the vertebra 20, so that the cost required for refill replacement can be reduced. Thus, since the refill 10 can be easily exchanged at low cost, it is possible to always ensure a clear field of view.
Further, even if the lateral and vertical movements of the head portion 11 of the refill 10 are restricted by the bottom surface engaging portion 30a and the side engaging portion 30b of the holder 22, the edge portion 13 is not restricted. The edge part 13 can be inclined. Further, the vertebra body portion 21 curved like a bow can uniformly apply a biasing force to the window surface, and the gap 37 provided in the spacer 23 can be freely tilted without applying an excessive load to the tip of the edge portion 13 when wiping. Since the state can be allowed, sufficient wiping ability can be ensured.
[0041]
Although the wiper vertebra 20 according to the present invention has been described with reference to the drawings, the vertebra 20 according to the present invention is not limited to the above-described one. For example, in the embodiment described above, an example in which six holders 22 are attached to the vertebra body 21 has been described. However, the number of holders 22 is not limited to six, and may be more or less than six. Further, the shape of the holder 22 is not limited to the above-described one, and it is only necessary that the holder 22 attached to the vertebra body 21 can hold the refill 10 in an exchangeable manner.
[0042]
Further, an engagement convex portion 50 (50 ′) and an engagement concave portion 51 (51) for engaging the base main body portion 43 (43 ′) of the clip base 24 with another base main body portion 43 ′ (43). However, the clip base according to the present invention is not limited to the structure described above. If the structure has a structure in which two main body parts having the same shape are paired to form a clip base and engage with the vertebra main body part 21, the shape and position of the engagement convex part and the engagement concave part of the main body part, etc. May have any configuration.
[0043]
【The invention's effect】
As described above, since the vertebra according to the present invention is structured as described above, the clip base is fixed to the vertebra body part without performing special processing on the vertebra body part for positioning the clip base. It becomes possible to do.
[0044]
In addition, since the clip base is configured such that two base body portions having the same shape are connected to each other, an increase in the number of types of parts can be suppressed, and the cost of the parts can be reduced. Assembling can be facilitated.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a vertebra and a refill according to the present invention.
FIG. 2 is a bottom view showing a holder.
FIG. 3 is a top view showing a holder.
FIG. 4 is a side view showing a cross section of a side engaging portion and a bottom engaging portion of the holder.
FIG. 5 is a side view showing an inclined projection piece of a holder.
6 is a view showing an AA cross section of the holder shown in FIG. 4. FIG.
FIG. 7 is a cross-sectional view showing a state where a vertebra main body is inserted through a holder.
FIG. 8 is a cross-sectional view showing a spacer and a clip base attached to a vertebra main body.
FIG. 9 is an exploded perspective view showing a clip base.
FIG. 10 is a perspective view showing an end portion of a refill.
FIG. 11 is a perspective view in which the vertebra shown in FIG. 1 is assembled and the refill is attached.
12 is a view showing a BB cross section of the vertebra shown in FIG. 11; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Refill 11 Head part 13 Edge part 20 Vertibra 21 Vertibra main body part 22 Holder 23 Spacer 24 Clip base 25 Convex part 30a Bottom surface engaging part 30b Side engaging part 32 Fitting hole 35 Inclined protrusion piece 43, 43 'Base main body part 46, 46 'Standing part 47, 47' Seat part 48, 48 'Holding part 48a, 48a' Holding arm 50, 50 'Engaging convex part 51, 51' Engaging concave part 52, 52 'Locking claw

Claims (4)

A vertebra for holding the refill,
A vertebra body body made of a long plate curved like a bow to add a uniform biasing force to the wiping surface;
A clip base that is attached to the vertebra body and engages the wiper arm;
A holder that is attached to the body part of the vertebra and holds the refill in an exchangeable manner, and that positions the clip base in the longitudinal direction of the body part of the vertebra.
The clip base is composed of a pair of base body portions connected at the center in the width direction of the vertebra body portion,
The pair of base body portions have the same shape ,
Each base body portion of the pair of base body portions includes an engaging portion for connecting the base body portions to each other, and connecting the base body portions to each other so that the vertebra body portion is a pair of base body portions. A holding portion that is sandwiched and held from the width direction,
The engaging portion includes an engaging concave portion that engages with an engaging convex portion formed on each base body portion, and an engaging convex portion that engages with an engaging concave portion formed on each base body portion. Formed,
The engagement recess and the engagement projection are arranged in parallel along the longitudinal direction of the base body . A locking claw is formed in the engaging convex portion, a locking groove is formed in the engaging concave portion, and the engaging convex portion of one clip base is connected to the engaging base of the other clip base. The vertebra according to claim 1, wherein the engaging claw of the one clip base engages with the engaging groove of the other clip base in a state of being fitted into the fitting recess. A clip base that is attached to a vertebra body body composed of a long plate curved like a bow in order to apply a uniform urging force to the wiping surface,
Consists of a pair of base body parts connected at the center in the width direction of the vertebra body part,
Each base main body part holds the vertebra body part between the pair of base main body parts in the width direction by connecting the base main body parts with an engaging part for connecting the base main body parts to each other. A holding part,
The pair of base body portions have the same shape ,
The engaging portion includes an engaging concave portion that engages with an engaging convex portion formed on each base body portion, and an engaging convex portion that engages with an engaging concave portion formed on each base body portion. Formed,
The clip base , wherein the engaging concave portion and the engaging convex portion are arranged side by side along a longitudinal direction of the base main body portion . A locking claw is formed in the engaging convex portion, a locking groove is formed in the engaging concave portion, and the engaging convex portion of one clip base is connected to the engaging base of the other clip base. 4. The clip base according to claim 3, wherein the engaging claw of the one clip base is engaged with the engaging groove of the other clip base in a state of being fitted into the fitting recess.

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