JP4657309B2 - Articulated automotive wiper - Google Patents

Description

The present invention relates to a connection type automobile wiper, and in particular, connects a necessary number of specially designed joining blocks and weight blocks, and combines them with flexible curved plates of various standard lengths to provide various lengths. The present invention relates to an automotive wiper that can produce a large amount of wiper and not only significantly reduce production cost, but also makes it possible to wipe out excellent water droplets by completely contacting a windshield of various curvatures.

  As the number of automobiles produced increases, the amount of wipers used for automobiles also increases significantly, and it is necessary for automobile drivers to replace wipers on a regular basis for safe driving. Is growing. Since the windshields installed in various automobiles have different sizes, the wipers used have different lengths, and how to produce mass-produced automotive wipers of various standards at the lowest cost for the wiper producer. Has become the most important matter, and structural improvements have been made to meet these standards.

  For example, the main functions of the wipers such as Patent Document 1, Patent Document 2 and Patent Document 3 are all the effects of making the pressure average distribution over various curvatures of the windshields of various automobiles and bringing the wipers into close contact with the windshield. In addition, the advantages are that the structure is simple and the manufacturing cost is low.

However, as is well known, since the windshields of sedan, RV cars, and other large and small trucks have different areas, the length of the wipers to be installed is also different. The water droplets can be wiped off. That is, when the windshield is large, it is necessary to use a long wiper, and when the windshield is small, it is necessary to use a short wiper. There are various standard lengths of wipers that are commercially available. With regard to a single standard length, water droplets can be wiped even when the curvature of the windshield differs depending on the above-described conventional wiper. However, when the area of the windshield is different, it is necessary to use a wiper having a different standard length, and a member for the wiper needs to be newly manufactured. Therefore, when producing wipers of all standard lengths existing in the market with the above-described conventional wipers, the number of members dedicated to wipers of each standard length becomes enormous, and the cost for the classification and management of the members is high. To increase. The inventor of the present invention thinks that the above-mentioned prior art cannot reduce the cost based on 20 years of wiper manufacturing experience.
US Pat. No. 7,254,862 US Patent Publication No. 2006/0090282 US Patent Publication No. 2006/0179597 JP 2007-253924 A Registered Utility Model No. 3115053

A first object of the present invention includes a flexible curved plate, a support base, several joining blocks, several weight blocks, a wiper blade, two covering covers, a support base cover, and two sealing lids, By connecting the joining block and the weight block and combining them with flexible curved plates of various lengths, we can produce wipers of various standard lengths, reduce production costs, increase market competitiveness, and protect the environment It is an object to provide an articulated automotive wiper that can be achieved.
The second object of the present invention is to connect several joining blocks and weight blocks and place them on the flexible curved plate so that the pressure applied from the flexible curved plate to the windshield of the automobile is increased. It is an object of the present invention to provide an articulated automobile wiper that is averagely distributed and has a stable and intimate contact between a wiper blade and a windshield of an automobile, and can perform good water droplet wiping.

In order to solve the above-mentioned problems, the invention of claim 1 is a flat plate made of a metal material and curved downward in an arc shape, provided with a rivet hole in the center and fitted at a position close to both short side ends. A flexible curved plate provided with a joint hole and a U-shaped body formed by press-molding a metal material. A through hole corresponding to a rivet hole on the flexible curved plate is provided at the center of the bottom surface. Is formed on a support base to which a support shaft is connected, a flexible curved plate, and a plastic material is integrally injection-molded, and a fitting hole is provided between the front surface and the back surface near the top surface. The cross-sectional shape of the fitting hole is the same as the cross-sectional shape of the flexible curved plate, and the size tolerance (Tolerance) after combining the two is a transition fit or clearance fit. Parallel to joint hole Each of the left side surface and the right side surface extends downward, and a pair of symmetrical buttocks are provided at the ends, and a pair of symmetrical support legs protrude downward from the bottom surface. On the inner side surface of the end, a symmetrical horizontal clamping portion is provided, with a gap between the upper surface and the bottom surface of both flanges, and a gap between the inner surface and the outer surface of the support leg. The flexible curved plate has a space between the support legs, a plurality of joint blocks having a space between the top and bottom surfaces of the horizontal holding portions, and a plurality of joint blocks penetrating between the joint blocks. It is fitted and molded by integrally injection molding plastic material or pressing metal material, its structure, shape and size are the same as the joining block, between the front and back close to the top A fitting hole is provided, and the cross-sectional shape of the fitting hole is the same as that of the flexible curved plate. The size tolerance (Tolerance) after combining the two is a transition fit or a clearance fit, and the left side and the right side parallel to the fitting hole extend downward, respectively, Is provided with a pair of symmetrical ridges that are curved inward, a pair of symmetrical support legs project downward from the bottom surface, and there is a gap between the top and bottom surfaces of both ridges, There is a space between the inner surface and the outer surface of the support legs, and several weight blocks with a space between the support legs and a flexible elastic material are integrally extruded, and on both sides of the upper step Is provided with an upright wiping part that gradually thins downward, and the altitude between the long groove and the upper surface of the upper part is joined to the upper surfaces of both horizontal clamping parts of the joining block. Distance between block bottom It is slightly smaller, and the width w of the upper surface of the upper step part is a wiper blade that is slightly smaller than the interval between the two support legs of the joining block and a hollow long plate body, and is formed by integrally extruding a rubber material. One side is provided with an arc-shaped projection that gradually becomes thinner upward, both long sides extend downward, and the end portion curves inward to form two symmetrical upper collars. The cross-sectional shape of the upper flange is the same as the cross-sectional shape of the flange of the joining block and the flange of the weight block, and the housing space formed between the bottom surface is the upper surface, left side and right side of the joining block and weight block. The surface is completely covered, and at the same time, both end portions are fitted on the support base with two covering covers inserted into the interval between the joint block and the weight block, and on the inner edge surface of both long sides thereof Fitting groove is provided, both short sides The cross-sectional shape is the same as the cross-sectional shape of the short side of the cover, and the support cover that completely covers the top surface of the cover and the outer edges of both long sides and the short side of the cover cover are fitted respectively. It is a hollow cube having an open end on the front side and a sealed end on the back side, and the cross-sectional shape of the open end is the same as the cross-sectional shape of both short sides of the covering cover, The size of the inner edge surface is slightly larger than the size of the outer edge surface of the cross section of both sides of the covering cover, and the elastic engagement convex edge is horizontally extended in the direction of the sealing end at the upper center of the inner wall near the opening end. It is a wiper for connection type vehicles provided with a sealing lid.

  According to a second aspect of the present invention, there is provided a connecting type automobile wiper according to the first aspect, wherein several hollow passages are provided between both short sides near the arc-shaped protrusion of the covering cover. is there.

  The invention according to claim 3 is the articulated automobile wiper according to claim 1, characterized in that metal elastic plates are respectively fitted on both side surfaces between the upper surface of the upper part of the wiper blade and the long groove. is there.

The present invention can manufacture wiper products of various standard lengths by arranging the necessary number of joining blocks and weight blocks, and it is not necessary to manufacture a new member for each standard length. The manufacturing cost can be greatly reduced, and wipers with different standard lengths can be flexibly produced. Not only can the overall production cost be reduced, but also the market competitiveness can be greatly enhanced and environmental protection can be achieved.

As shown in FIGS. 1 to 3, 16, and 17, the coupled automobile wiper of the present invention includes a flexible curved plate 10, a support base 20, several joining blocks 30, and several weight blocks 40. , Wiper blade 50, two covering covers 60, support base cover 70 and two sealing lids 80.

The flexible curved plate 10 is a flat plate made of a metal material and curved downward in an arc shape. A rivet hole 11 is provided at the center, and fitting holes 12 are provided at both ends.

The support base 20 is a U-shaped body formed by press-molding a metal material, and a through hole 21 corresponding to the rivet hole 11 on the flexible curved plate 10 is provided at the center of the bottom surface, and between the two upright side surfaces. After the support shaft 22 is connected and the wiper connector 90 is fitted and fixed (see FIG. 16), it is fixed on the end of the wiper arm S (see FIG. 17).

Several joining blocks 30 are formed by integrally injection-molding a plastic material, and are arranged on the flexible curved plate 10. A fitting hole 34 is provided between the front surface 32 and the rear surface 33 close to the upper surface 31. The cross-sectional shape of the fitting hole 34 is the same as the cross-sectional shape of the flexible curved plate 10, and the size tolerance (Tolerance) after combining both is a transition fit or a clearance fit. As shown in FIG. 2, the left side surface 35 and the right side surface 36 parallel to the fitting hole 34 respectively extend downward, and a pair of flange portions 37 that are curved inward and symmetrical to each other are provided at the ends. Support legs 39 protrude downwardly from the bottom surface 38, and horizontal holding portions 391 are provided symmetrically with each other on the inner surfaces of both ends. There is a gap δ1 between the upper surface 371 and the bottom surface 38 of the both flanges 37, a gap δ2 between the inner side surface 372 and the outer surface of the support leg 39, and a gap δ3 between the both support legs 39. And has a gap δ4 between the upper surface and the bottom surface 38 of both horizontal clamping portions 391.

The weight block 40 is arranged between the joint blocks 30 so as to penetrate the flexible curved plate 10 in the same manner, and is formed by integrally injection-molding a plastic material or pressing a metal material. Its structure, shape and size are the same as those of the joining block 30, and a fitting hole 44 is provided between the front surface 42 and the back surface 43 of the upper surface 41 portion. The cross-sectional shape of the fitting hole 44 is the same as the cross-sectional shape of the flexible curved plate 10, and the size tolerance (Tolance) after the combination of both is a transition fit or a clearance fit. As shown in FIG. 3, the left side surface 45 and the right side surface 46 parallel to the fitting hole 44 respectively extend downward, and at the ends thereof, a pair of flange portions 47 are provided symmetrically with each other. From the bottom surface 48, support legs 49 protrude symmetrically downward. There is a gap δ1 between the upper surface 471 and the bottom surface 48 of both flange portions 47, a gap δ2 between the inner side surface 472 and the outer surface of the support leg 49, and a gap δ3 between the both support legs 49. .

The wiper blade 50 is formed by integrally extruding a flexible elastic material, provided with long concave grooves 51 on both side surfaces of the upper step portion, and provided with an upright wiping portion 53 that gradually becomes thinner on the lower step portion. It is done. The height h between the long concave groove 51 and the upper step portion 52 is slightly smaller than the distance δ4 between the upper surfaces of both horizontal clamping portions 391 of the joining block 30 and the bottom surface 38 of the joining block 30, and the width of the upper step portion upper surface 52. w (see 1a in FIG. 1) is slightly smaller than the interval δ3 (see FIG. 2) between the two support legs 39 of the joint block 30, and is inserted between the two support legs 39 of the joint block 30 so as to be sandwiched horizontally. The portion 391 is clamped and fixed.

The two cover covers 60 are hollow long plates, and are formed by integrally extruding a rubber material. On one side of the upper surface 61, there are provided arc-shaped protrusions 62 that gradually become thinner upward, both long side edges 63 extend downward, and end portions thereof are curved inward and symmetrical upper collar portions 64. Is formed (see 1b in FIG. 1). The cross-sectional shape of the upper collar part 64 is the same as the cross-sectional shape of the collar part 37 of the joining block 30 and the collar part 47 of the weight block 40, and an accommodation space 66 is formed between both upper collar parts 64 and the bottom surface 65, The upper surfaces 31, 41, left side surfaces 35, 45, and right side surfaces 36, 46 of the joining block 30 and the weight block 40 are completely covered, and at the same time, both ends thereof are within the interval δ1 and the interval δ2 of the joining block 30 and the weight block 40. Inserted into.

The support base cover 70 is fitted onto the support base 20, and fitting concave grooves 71 are provided on the inner edge surfaces of both long sides thereof, both upright side surfaces of the support base 20 are inserted, and both short side sides are inserted. The cross-sectional shape is the same as the cross-sectional shape of the short side 67 of the cover 60 and completely covers the upper surface 61 of the cover 60 and the outer edge surfaces of both long sides 63.

Both sealing lids 80 are fitted on one short side 67 of the covering cover 60 and are hollow solid bodies having an opening end 81 on the front side and a sealing end 82 on the rear side. The cross-sectional shape of the open end 81 is the same as the cross-sectional shape of the both short sides 67 of the covering cover 60, but the size of the inner edge surface thereof is slightly larger than the size of the outer edge surface of the cross-section of both short sides 67 of the covering cover 60, An elastic hooking convex edge 83 extends horizontally in the direction of the sealing end 82 in the center of the upper part of the inner wall surface near the opening end 81 (see 1c in FIG. 1).

As shown in FIGS. 4 to 11, the assembly process of the present invention includes the following steps.

a: First, as shown in FIG. 5, the flexible bending plate 10 is inserted into the fitting hole 34 of the joining block 30, and the joining block 30 is installed between the two rivet holes 11 on the flexible bending plate 10. To do.

b: As shown in FIG. 6, the support base 20 is installed at the center of the upper surface of the flexible curved plate 10, and the rivet R penetrates the through hole 21 of the support base 20 and the rivet hole 11 of the flexible curved plate 10. The support base 20 is fixed on the flexible curved plate 10 by rivet bonding.

  c: As shown in FIG. 7 and FIG. 8, the necessary number of joining blocks 30 and weight blocks 40 are sequentially arranged in the jig Y and arranged in a line, and then one of the flexible curved plates 10. Is inserted into the fitting hole 34 of the joining block 30 in the jig Y from the short side of the same, so that one half of the flexible bending plate 10 is easily inserted into the aligned joining block 30 and weight block 40. be able to.

  d: As shown in FIG. 9, by inserting the remaining half of the flexible curved plate 10 into the joining block 30 and the weight block 40 in the same manner as in step c, the flexible curved plate 10 and the joining block 30 are inserted. And the three of the weight block 40 can be combined.

  e: As shown in FIG. 10, by inserting the two long concave grooves 51 of the upper step portion of the wiper blade 50 between the both support legs 39 of the joint block 30 and the both horizontal clamping portions 391, the wiper blade 50 is It is fixed on each joint block 30 and weight block 40.

f: As shown in FIG. 11, the short sides 67 of both covering covers 60 are fitted to the ends of both short sides of the flexible bending plate 10 until they come into contact with both ends of the support base 20. The bending plate 10, the joining block 30 and the weight block 40 are completely covered.

g: Finally, as shown in FIG. 12, the open ends 81 of both sealing lids 80 are fitted from the end portions of both short sides of the flexible curved plate 10, and the engaging convex edge 83 is fitted to the flexible curved plate 10. By pressing and crimping until fitted into the mating hole 12 and clicking, the two are engaged, whereby all the engaging blocks 30, the weight block 40 and both covering covers 60 are flexible curved plates. No drop off from 10. As shown in FIG. 13, the support base cover 70 is fitted onto the support base 20, and the fitting concave grooves 71 between both long sides thereof are fitted to both upright sides of the support base 20, and then both covering covers The outer edge surface of the other short side of 60 is completely covered and the assembly operation is completed.

  When the weight block 40 in the above step c is not used as a weight block, a product manufactured from a plastic material is used in combination with the joining block 30. When the weight block 40 is used as a weight block, a product manufactured from a metal material is used. By using it, the weight due to its weight is distributed according to the pressure required for the flexible curved plate 10 to press the windshield G of various curvatures, and is installed between the joining blocks 30 in the assembly process. To achieve the effect as a weight block.

  As shown in FIGS. 14 and 15, in the present invention, several hollow passages 68 are provided between both short sides 67 close to the arc-shaped protrusion 62 of the covering cover 60, and the material cost is reduced in addition to reducing the weight. Although it can be reduced, the water droplet wiping effect of the windshield G is not affected at all.

  As shown in FIG. 18, when the standard length of the flexible curved plate 101 is increased in the present invention, the arrangement quantity of the joining blocks 30 or the weight blocks 40 is increased, and the wiper blade 50 ′ and the covering cover 601 are extruded. By changing the cutting length at the time, wipers having different standard lengths can be manufactured, and it is not necessary to manufacture new members having different standards.

  FIGS. 19 and 20 show another embodiment of the wiper blade 500 of the present invention, which is formed by integrally extruding a flexible elastic material. On both side surfaces of the upper step portion, a long groove 501 is formed in parallel with each other. A metal elastic plate 503 is fitted on both side surfaces between the upper surface 502 and the long groove 501, and an upright wiping portion 504 that is gradually thinned downward is provided on the lower step portion thereof. The height h between the long concave groove 501 and the upper surface 502 of the upper step portion is slightly smaller than the interval δ4 between the upper surfaces of both horizontal clamping portions 391 of the joining block 30 and the bottom surface 38 of the joining block 30. The width w is slightly smaller than the interval δ3 between the two support legs 39 of the joining block 30, can be directly inserted between the both support legs 39 of the joining block 30, and is sandwiched and fixed by both horizontal clamping portions 391.

  As described above, according to the present invention, wiper products of various standard lengths can be manufactured by arranging the necessary number of joining blocks and weight blocks, and there is no need to manufacture a new member for each standard length. , Which can greatly reduce inventory management costs and manufacturing costs, and can flexibly produce wiper products with different standard lengths, not only reduce the overall production cost, but also greatly increase the market competitiveness, Environmental protection can also be achieved.

It is a perspective exploded view showing the present invention. It is a front view which shows the joining block of this invention. It is a front view which shows the weight block of this invention. It is a perspective view which shows the flexible curved board of this invention. It is a perspective view which shows the assembly step a of this invention. It is a perspective view which shows the assembly step b of this invention. It is a perspective view which shows the assembly step c of this invention. It is a perspective view which shows the assembly step c of this invention. It is a perspective view which shows the assembly step d of this invention. It is a perspective view which shows the assembly step e of this invention. It is a perspective view which shows the assembly step f of this invention. It is a perspective view which shows the assembly step g of this invention. It is a perspective view which shows the assembly step g of this invention. It is a perspective view which shows the other Example of the covering cover of this invention. It is sectional drawing which shows the other Example of the covering of this invention. It is a perspective view which shows the state which joins this invention with a wiper connector. It is a perspective view which shows the state which joins this invention with a wiper arm. It is a perspective exploded view showing other examples of the present invention. It is a perspective exploded view showing other examples of the wiper blade of the present invention. It is sectional drawing which shows the state which joined the wiper blade of the other Example of this invention to the connection block.

Explanation of symbols

10, 101 Flexible curved plate 11 Rivet hole 12 Fitting hole 20 Support base 21 Through hole 22 Support shaft 30 Joining blocks 31, 41, 52, 61, 371, 471, 502 Upper surface 32, 42 Front surface 33, 43 Back surface 34 44, fitting hole 35, 45 left side 36, 46 right side 37, 47 collar 38, 48, 65 bottom 39, 49 support leg 40 weight block 50, 50 ', 500 wiper blade 51, 501 long groove 503 metal Elastic plate 53, 504 Wiping part 60, 601 Cover cover 62 Arc-shaped protrusion 63 Long side 64 Upper flange 66 Housing space 67 Short side 68 Hollow passage 70 Support base cover 71 Fitting groove 80 Sealing lid 81 Open end 82 Sealing end 83 Engagement convex edge 90 Wiper connectors 372 and 472 Inner side surface 391 Horizontal clamping part G Windshield h Height R Rivet S Wiper arm w Width δ1, δ2, δ3, δ4 intervals

Claims (3)

It is a flat plate made of a metal material, curved downward in an arc shape, provided with a rivet hole in the center, and provided with fitting holes at positions close to the short side ends of both ends,
A U-shaped body formed by press-molding a metal material, a support base having a through hole corresponding to a rivet hole on a flexible curved plate at the center of the bottom, and a support shaft connected between two upright side surfaces;
The fitting hole is arranged on the flexible curved plate and is formed by integrally injection-molding a plastic material, and a fitting hole penetrating between the front surface and the back surface near the upper surface is provided. The cross-sectional shape of the flexible curved plate is the same, and the size tolerance (Tolance) after combining the two is a transition fit or clearance fit, and the left side surface parallel to the fitting hole and Each of the right side surfaces extends downward, and a pair of symmetrical buttocks are provided at the ends, and a pair of symmetrical support legs protrude downward from the bottom surface. A horizontal holding part is provided symmetrically with each other, there is a gap between the upper surface and the bottom surface of the both flanges, and there is a gap between the inner side surface and the outer side surface of the support leg. There is a gap between the support legs, Between the top and bottom surfaces of the horizontal clamping unit and several joint block with a spacing,
The structure, shape and size are formed by penetrating and arranging between the respective joining blocks, fitted on the flexible curved plate, and formed by integrally injection-molding a plastic material or pressing a metal material. Is the same as the joining block, provided with a fitting hole penetrating between the front surface and the back surface near the upper surface, and the sectional shape of the fitting hole is the same as the sectional shape of the flexible curved plate, Tolerance is a transition fit or clearance fit, and the left and right sides parallel to the fitting hole respectively extend downward, and at the end thereof A pair of symmetrically curved flanges are provided, and a pair of symmetrical support legs protrude downward from the bottom surface, and there is a gap between the upper surface and the bottom surface of both flange portions. Between the inner surface and the outer surface of the support leg has a gap, between the support legs and several weight block with a spacing,
A flexible elastic material is integrally formed by extrusion, and long concave grooves are provided on both side surfaces of the upper step portion, and an upright wiping portion that is gradually thinned downward is provided on the lower step portion. The height between the upper surface of the upper step part is slightly smaller than the distance between the upper surfaces of both horizontal clamping parts of the joining block and the bottom surface of the joining block, and the width w of the upper surface of the upper step part is the distance between the two support legs of the joining block. A slightly smaller wiper blade,
It is a long, hollow plate that is formed by integrally extruding a rubber material.An arc-shaped projection that gradually thins upward is provided on one side of the upper surface, and both long sides extend downward. The end portion is curved inward to form two mutually symmetrical upper collar portions, and the sectional shape of the upper collar portion is the same as the sectional shape of the joint block collar portion and the weight block collar portion, and the bottom surface The housing space formed between the two blocks completely covers the upper surface, left side surface and right side surface of the joining block and the weight block, and at the same time, both end portions thereof are inserted into the space between the joining block and the weight block. A covering cover;
Fitting on the support base, fitting grooves are provided in the inner edge surface of both long sides, the cross-sectional shape of both short sides is the same as the cross-sectional shape of the short side of one end of the covering cover, A support base cover that completely covers the upper surface of the cover and the outer edges of both long sides;
Each of the covering covers is fitted on one short side, is a hollow solid body having an opening end on the front side surface and a sealing end on the rear side surface, and the sectional shape of the opening end is the covering cover. Although the cross-sectional shape of both short sides is the same, the size of the inner edge surface is slightly larger than the size of the outer edge surface of the cross-section of both short sides of the covering cover, and in the direction of the sealing edge near the open end of the inner wall And a sealing lid with two elastic lids extending horizontally.   2. The connected automobile wiper according to claim 1, wherein several hollow passages penetrating between both short sides close to the arc-shaped projection of the covering cover are provided.   2. The connected automobile wiper according to claim 1, wherein metal elastic plates are fitted on both side surfaces between the upper surface of the upper part of the wiper blade and the long groove.

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