Windshield wiper support assembly and boneless windshield wiper

Abstract

A windshield wiper support assembly comprises an elastic supporting part and a connector base, a positioning elastic piece is additionally arranged on the upper surface of the elastic supporting part, a pair of folding pieces which are arranged at intervals and warp upwards are arranged on the upper surface of the positioning elastic piece, and a first channel and a second channel which are through front and back in the length direction are sequentially formed in the inner wall side of the connector base from top to bottom. The inner top wall side of the first channel is provided with a limiting surface on one side opposite to the free ends of the two folding sheets, and the first channel is used for allowing the elastic supporting part and the positioning elastic sheet to penetrate through and limiting the relative displacement of the elastic supporting part relative to the connector base in the height and width directions; the free ends of the two upwarp folding sheets of the positioning elastic sheet are mutually clamped with the limiting surface, so that the relative displacement of the elastic supporting part relative to the joint base along the length direction is limited; the second channel is used for receiving the windshield wiper rubber strip; through the arrangement of the first channel, the arrangement that an existing bearing connecting piece serves as a middle connecting piece is omitted, and then the fit clearance between all the components is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, in particular to a wiper bracket assembly and a boneless wiper equipped with the wiper bracket assembly. Background Art

[0002] The boneless wiper includes an elastic support member 1a, a wiper joint base 3a, a wiper joint, a bearing piece 2a and a wiper rubber strip, etc., such as the boneless wiper disclosed in CN108583517B, please refer to Figure 1a and Figure 1b The positioning spring piece 20a is in the shape of a thin sheet, and at least one limit block 25a extending upward is provided on its upper surface. The wiper joint base 3a has a slide groove 31a along the length direction, and a positioning portion 32a is provided on the inner top wall of the wiper joint base 3a. The positioning portion 32a and the limit block 25a are positioned and matched with each other. Through the above-mentioned positioning and matching, the wiper joint base 3a is limited to move back and forth along the length direction of the wiper elastic support component 1a. The top surface of the wiper joint base 3a is provided with a connecting portion for connecting the wiper joint. The bearing contact piece 2a is in the shape of a long strip, which is penetrated in the slide groove 31a of the wiper joint base 3a. The bearing contact piece 2a is respectively provided with a first C-shaped groove 27a and a second C-shaped groove 28a from top to bottom. The first C-shaped groove 27a is used to penetrate the elastic support component 1a, and the second C-shaped groove 28a is used to penetrate the wiper rubber strip 5a. With the above structure, since the elastic support component 1a and the positioning spring piece 20a are connected to the wiper joint base 3a through the supporting contact piece 2a as the intermediate connecting component, the more components are assembled together, the more likely it is that the cumulative error of the fitting clearance will occur. At the same time, the supporting contact piece 2a is often integrated, and the first C-shaped groove 27a must consider the space for accommodating the positioning spring piece 20a, and the positioning spring piece 20a is often set in the middle section of the first C-shaped groove 27a of the supporting contact piece 2a, so that there is a larger fitting clearance between the non-middle section area of ​​the first C-shaped groove 27a of the supporting contact piece 2a (the area other than the positioning spring piece 20a) and the elastic support component 1a. Summary of the invention

[0003] The first object of the utility model is to provide a wiper bracket assembly which makes the connection between the elastic supporting component and the joint base more stable.

[0004] The second purpose of the utility model is to provide a boneless windshield wiper which has stable scraping and is not prone to shaking.

[0005] To achieve the first purpose of the utility model, the utility model discloses a wiper bracket assembly, which includes an elastic support component and a joint base, wherein the elastic support component is a sheet-like body, and a thin sheet-like positioning spring sheet is added on its upper surface, and the upper surface of the positioning spring sheet is provided with a pair of interval-arranged and upwardly tilted folding pieces, and the longitudinal cross-section of the two upwardly tilted folding pieces is in an eight-shaped shape; the outer wall side of the joint base is provided with a connecting portion for connecting the wiper connecting assembly or the joint base is directly integrally formed with the wiper connecting assembly, and the inner wall side of the joint base has a first channel and a second channel that pass through the longitudinal direction from top to bottom, and the inner top wall side of the first channel is provided with a limiting surface on one side relative to the free ends of the two folding pieces, and the first channel is used for the elastic support component and the positioning spring sheet to pass through, and to limit the relative displacement of the elastic support component relative to the joint base along the height and width directions; the free ends of the two upwardly tilted folding pieces of the positioning spring sheet are mutually clamped with the limiting surface, thereby limiting the relative displacement of the elastic support component relative to the joint base along the length direction; the second channel is used to receive the wiper rubber strip.

[0006] By adopting the above structure, a first channel for receiving the elastic support component and the positioning spring sheet and a second channel for receiving the wiper rubber strip are respectively arranged on the joint base, thereby arranging the load-bearing joint piece as the intermediate connecting piece by default. Compared with the prior art, the first channel does not need to reserve space for receiving the intermediate receiving component, thereby reducing the matching clearance between the first channel in the joint base and the elastic support component, and improving the stability of the connection between the elastic support component and the joint base.

[0007] To achieve the above-mentioned second purpose, a boneless wiper is provided, which includes the above-mentioned wiper bracket assembly and an intermediate supporting component, wherein the intermediate supporting component is disposed at both ends of the joint base, and the intermediate supporting component forms a third channel and a fourth channel from top to bottom along the length direction, wherein the first channel and the third channel are connected to each other, and the second channel and the fourth channel are connected to each other.

[0008] With the above design, since the boneless wiper does not need to preset a storage space for the positioning spring in the third channel of the intermediate supporting component located on both sides of the joint base, the matching clearance between the elastic supporting component and the third channel of the intermediate supporting component is reduced, making the boneless wiper less likely to shake during wiping, thereby greatly improving the cleanliness of the boneless wiper. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The detailed description given as non-limiting examples better explains what the invention consists of and how it can be implemented, and furthermore, refers to the accompanying drawings, in which:

[0010] Figure 1a and Figure 1b It is a schematic diagram of the structure of the boneless wiper disclosed in CN108583517A;

[0011] Figure 2 It is a three-dimensional assembly schematic diagram of the wiper bracket assembly of the utility model;

[0012] Figure 3 An exploded schematic diagram of the wiper bracket assembly of the utility model;

[0013] Figure 4 It is a longitudinal sectional view of the wiper bracket assembly of the utility model;

[0014] Figure 5 It is a transverse cross-sectional view of the wiper bracket assembly of the utility model;

[0015] Figures 6 to 8 It is a schematic diagram of the structure of the connector base of the utility model at different angles;

[0016] Fig. 9 This is a schematic diagram of the structure of the connector base of other embodiments of the utility model;

[0017] Fig.10 This is a schematic diagram of the internal structure of the connector base of the utility model;

[0018] Fig.11 This is an exploded schematic diagram of the boneless wiper of the utility model;

[0019] Fig.12 It is a longitudinal cross-sectional view of the intermediate receiving component of the utility model;

[0020] Fig.13 It is a schematic diagram of the cooperation between the middle receiving component, the elastic supporting component and the spoiler of the utility model. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "vertical", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0024] See also Figures 2 to 5 A wiper bracket assembly 100, which includes an elastic supporting component 1 and a joint base 2; in the present embodiment, a connecting portion 21 for connecting a wiper connecting assembly 200 is provided on the outer wall side of the joint base 2, and the matching relationship between the two can be found in the description of the relevant structure in CN116985752A, which will not be described again here; of course, it should be noted that the joint base 2 is not limited to being connected to the wiper connecting assembly 200 using the connecting portion, and ordinary technicians in this field can adopt different connection structures to realize the detachable / assembly connection between the wiper connecting assembly 200 and the connecting base 2. At the same time, in other embodiments, the joint base 2 can be directly integrated with the wiper connecting assembly 200.

[0025] The elastic support component 1 is a sheet-like body, and a thin sheet-like positioning spring piece 3 is added on its upper surface. The width of the positioning spring piece 3 is smaller than the width of the elastic support component 1; the positioning spring piece 3 can be mutually engaged with the elastic support component 1, or fixed to the elastic support component 1 by welding or riveting. For details, see CN108583517A for the assembly relationship between the positioning spring piece 3 and the elastic support component 1. Of course, the specific embodiment of the positioning spring piece 3 given in the utility model is that a pair of interval-arranged and upturned folding pieces 31 are provided on the upper surface, and the longitudinal cross-section of the two upturned folding pieces 31 is in an eight-shaped shape.

[0026] See also Figure 3 The inner wall side of the joint base 2 has a first channel 22 and a second channel 23 which are connected front to back along the length direction from top to bottom; the first channel 22 is used for the elastic support component 1 and the positioning spring sheet 3 to pass through, and the first channel 22 is surrounded by a top wall 221, two side walls 222 and a partition 223, the inner wall side of the top wall 221 is against the positioning spring sheet 3, and the front and rear sections of the inner wall side of the top wall 221 form two openings arranged at intervals along the length direction at the position of the two folded pieces 31 of the positioning spring sheet 3. The outer give way groove 26, and the two inner end faces of the give way groove 26 respectively construct a limiting surface 24 that is mutually engaged with one side of the free end of the folding piece 31, and the limiting surface 24 is mutually engaged with the free ends of the two folding pieces 31 of the positioning spring piece 3, thereby limiting the relative displacement of the positioning spring piece 3 relative to the joint base 2 along the length direction, and further limiting the relative displacement of the elastic support component 1 relative to the joint base 2 along the length direction; the second channel 23 is composed of two longitudinal hooks 231 extending along the length direction below the partition plate 223 and arranged at intervals.

[0027] More optimized, such as Figures 5 to 10The width of the elastic support component 1 is greater than the width of the positioning spring piece 3. The inner wall side of the top wall 221 is symmetrically provided with two first positioning ribs 224 and two second positioning ribs 225 along its width direction with the longitudinal center axis X as the reference line. At least one positioning protrusion 226 is provided in the middle section between the two second positioning ribs 225. The distance H1 from the first positioning rib 224 to the partition 223 is less than the distance H2 from the second positioning rib 225 to the partition and less than the distance H3 from the positioning protrusion 226 to the partition. The first positioning rib 224 is used to press the two side parts of the elastic support component 1, and the second positioning rib 225 is used to press the two side parts of the positioning spring piece 3, which can avoid the phenomenon of upward arch deformation caused by the thin thickness of the elastic support component 1. The two outer end faces of the positioning protrusion 226 are used as limiting surfaces 24 to clamp the free ends of the two upturned folding pieces 3 of the positioning spring piece 3.

[0028] Preferably, if Figure 6 The top wall 221 forms a visible through hole 25 opened in the vertical direction relative to the limiting surface 24, and the visible through hole 25 is used to visually observe whether the limiting surface 24 is abutted against the free end of the upward folding piece 31.

[0029] Preferably, if Figure 4 , Figure 7 and Fig.10, a guiding slope 2261 is formed on the inner wall side of the top wall 221 in the area located in the give way groove 26 along the length direction, and the distance between the guiding slope 2261 and the partition 223 gradually decreases from the outside to the inside. When the elastic support component 1 with the positioning spring piece 3 is inserted into the first channel 22 from right to left, a flared end is formed between the guiding slope 2261 and the partition 223 to facilitate the insertion of the elastic support component 1 with the positioning spring piece 3. Since the positioning spring piece 3 has two upward-curved folding pieces 31, for the convenience of explanation, the folding piece 31 that slides into the first channel 22 first is defined as the first folding piece 31a, and the other folding piece is defined as the second folding piece 31b. As the distance between the guiding slope 2261 and the partition 223 gradually decreases, the first folding piece 31a and the second folding piece 31b can be driven in turn to be elastically deformed downward under pressure. , and because the outer side surface of the first folded piece 31a is facing away from the positioning protrusion 226, it is squeezed by the positioning protrusion 226 and can be pressed downward to elastically deform the first folded piece 31a, thereby passing through the channel constructed by the positioning protrusion 226 and the partition 223, until the free end of the second folded piece 31b abuts against the limiting surface 24 of the positioning protrusion 226. At this time, the first folded piece 31a also passes through the channel constructed by the positioning protrusion 226 and the partition 223, and the free end of the first folded piece 31a also rises relative to the limiting surface 24 on the other side of the positioning protrusion 226, thereby achieving the limitation of the positioning spring piece 3 and the joint base 2 along the length direction, and because there is no relative displacement between the positioning spring piece 3 and the elastic support component 1 along the length direction, the limitation of the elastic support component 1 and the joint base 2 along the length direction is finally achieved. Of course, in order to facilitate the insertion of the elastic support component 1 and the positioning spring piece 3 into the first channel 22, as shown in Figure 7 A first flared portion 2241 may be formed at both inlet ends of the first rib 224 , and a second flared portion 2251 may be formed at both inlet ends of the second rib 225 .

[0030] See also Figure 8Preferably, the partition plate 223 is provided with a through notch groove 2231 along the length direction. If the partition plate 223 is not designed with the notch groove 2231 but is a complete plate, in order to form two limiting surfaces 24 on the inner wall side of the top wall 221, the first channel 22 must be formed by two mold cores inserted and abutted against each other at both ends of the first channel 22 by injection molding, and each mold core must be equipped with a cantilever structure (not shown in the figure), and the structure of each mold core cantilever is subject to the effect of injection molding pressure, and over time, it is easy to produce position deformation, thereby causing the two ends of the first channel 22 to be misaligned to form a misaligned step; but due to the first channel 2 A notch groove 2231 is provided on the partition plate 223, so that the mold core for forming the first channel 22 can be connected with the mold core for forming the second channel 23 to form a whole. Since the second channel 23 itself is provided with a slit 232 for passing the wiper rubber strip 6, the mold core for forming the first channel 22 and the second channel 23 is connected with the mold base to form a whole, thereby replacing the cantilever design of the mold core for forming the first channel 22, thereby improving the injection molding accuracy of the first channel 22; more preferably, a partition 2232 is provided in the middle of the notch groove 2231 to increase the structural strength of the joint base 2.

[0031] The second channel 23 is used to receive the wiper rubber strip 6 . The second channel 23 is composed of two longitudinal hooks 231 extending along the length direction below the partition plate 223 and arranged at intervals.

[0032] See also Figures 11 to 13The utility model further discloses a boneless wiper, which includes the above-mentioned wiper bracket assembly 100 and an intermediate receiving component 4; the intermediate receiving component 4 disclosed in this article can be made into a long strip with certain flexibility by an extrusion process, and its specific structure can refer to the structure of the bearing strip described in CN108657127A; it can also refer to CN103269920A, the wiper strip unit 10 disclosed in this patent document is equivalent to the intermediate receiving component 4 defined in this patent, and the wiper strip unit has a matching portion for inserting a spoiler (deflector element); it can also refer to the support frame disclosed in CN100564114C and the longitudinal body disclosed in CN104590215A, which is equivalent to the intermediate receiving component 4 defined in this patent, and the longitudinal body will spoil The spoiler is integrally formed; you can also refer to CN101456407B. The several receiving blocks disclosed in this patent document are equivalent to the intermediate receiving component 4 defined in this patent, that is, the intermediate receiving component 4 adopts segmented splicing, and the receiving block is generally composed of injection molded parts, and the material is relatively hard; the intermediate receiving component 4 disclosed in this embodiment is arranged at both ends of the joint base 2, and the intermediate receiving component 4 forms a fifth channel 43, a third channel 41 and a fourth channel 42 in sequence from top to bottom along the length direction, the fifth channel 43 is used to pass the spoiler 5, the first channel 22 and the third channel 41 are connected to each other, the second channel 23 and the fourth channel 42 are connected to each other, the third channel 41 is used to receive the elastic support component 1, and the fourth channel 42 is used to receive the wiper rubber strip 6.

[0033] By adopting the above design, a first channel 22 for receiving the elastic support component 1 and the positioning spring piece 3 is provided on the joint base 2. Compared with the prior art, the provision of the intermediate receiving component 4 is omitted, thereby reducing the fitting clearance between the components; moreover, the boneless wiper of the utility model does not need to consider the space for the intermediate receiving component 4 to accommodate the positioning spring piece 3, thereby reducing the fitting clearance in the third channel 42 between the elastic support component 1 and the intermediate receiving component 4, so that the boneless wiper is not easy to shake during wiping, thereby greatly improving the wiping cleanliness of the boneless wiper.

[0034] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A wiper bracket assembly (100), comprising an elastic support component (1) and a joint base (2), wherein the elastic support component (1) is a sheet-shaped body, and a thin sheet-shaped positioning spring (3) is additionally provided on its upper surface, and a pair of spaced-apart and upwardly tilted folding pieces (31) are provided on the upper surface of the positioning spring (3), and the longitudinal cross-sections of the two upwardly tilted folding pieces (31) are in an eight-shaped shape; characterized in that: The outer wall side of the connector base (2) is provided with a connection portion (21) for connecting to the wiper connection assembly (200), or the connector base (2) is directly integrally formed with the wiper connection assembly (200); the inner wall side of the connector base (2) has a first channel (22) and a second channel (23) which are connected front to back along the length direction in sequence from top to bottom; the inner top wall (221) side of the first channel (22) is provided with a limiting surface (24) on the side opposite to the free ends of the two folding pieces (31); the first channel (22) is used for allowing the elastic support component (1) and the positioning spring piece (3) to pass through, and for limiting the relative displacement of the elastic support component (1) relative to the connector base (2) along the height and width directions; the free ends of the two upward folding pieces (31) of the positioning spring piece (3) are mutually engaged with the limiting surface (24), thereby limiting the relative displacement of the elastic support component (1) relative to the connector base (2) along the length direction; the second channel (23) is used for receiving the wiper rubber strip.

2. The wiper bracket assembly (100) according to claim 1, characterized in that: The first channel (22) is formed by a top wall (221), two side walls (222) and a partition (223); the inner wall side of the top wall (221) abuts against the positioning spring sheet (3), and the front and rear sections of the inner wall side of the top wall (221) form two spaced-apart grooves (26) arranged along the length direction at positions relative to the two folding pieces (31) of the positioning spring sheet (3); the two inner end surfaces of the spaced-apart grooves (26) respectively form limiting surfaces (24) mutually engaged with one side of the free end of the folding piece (31); the second channel (23) is formed by two longitudinal hooks (231) extending along the length direction and spaced-apart from each other below the partition (223).

3. The wiper bracket assembly (100) according to claim 2, characterized in that: The width of the elastic support component (1) is greater than the width of the positioning spring sheet (3); the inner wall side of the top wall (221) is symmetrically provided with two first positioning convex ribs (224) and two second positioning convex ribs (225) along its width direction with the longitudinal center axis X as the reference line, and at least one positioning protrusion (226) is provided in the middle section between the two second positioning convex ribs (225); the distance H1 from the first positioning convex rib (224) to the partition (223) is less than the distance H2 from the second positioning convex rib (225) to the partition 2<the distance H3 between the positioning protrusion (226) and the partition plate, so that the front and rear sections between the two second positioning protrusions (225) form the two clearance grooves (26), the first positioning protrusion (224) is used to press the two side portions of the elastic support component (1), the second positioning protrusion (225) is used to press the two side portions of the positioning spring sheet (3), and the two outer end surfaces of the positioning protrusion (226) serve as limiting surfaces (24) for clamping the free ends of the two upwardly tilted folding pieces (31) of the positioning spring sheet (3).

4. The wiper bracket assembly (100) according to claim 2 or 3, characterized in that: The inner wall side of the top wall (221) forms a guide slope (2261) in the area of ​​the clearance groove (26), and the distance between the guide slope (2261) and the partition (223) gradually decreases from the outside to the inside.

5. The wiper bracket assembly (100) according to claim 4, characterized in that: The partition plate (223) is provided with a through notch groove (2231) along the length direction.

6. The wiper bracket assembly (100) according to claim 5, characterized in that: A partition (2232) is provided in the middle of the notch groove (2231).

7. The wiper bracket assembly (100) according to claim 2 or 3, characterized in that: The partition plate (223) is provided with a through notch groove (2231) along the length direction.

8. The wiper bracket assembly (100) according to claim 7, characterized in that: A partition (2232) is provided in the middle of the notch groove (2231).

9. The wiper bracket assembly (100) according to claim 1, characterized in that: When the outer wall side of the joint base (2) is connected to the external wiper connection assembly (200) via the connection portion (21), the top wall (221) forms a visible through hole (25) opened in the vertical direction relative to the limiting surface (24), and the visible through hole (25) is used to visually observe whether the limiting surface (24) is abutted against and locked with the free end of the upward folding piece (31).

10. A boneless wiper, characterized in that: It comprises a wiper bracket assembly (100) as claimed in any one of claims 1 to 7 and an intermediate receiving component (4), wherein the intermediate receiving component (4) is disposed at both ends of a joint base (2), and the intermediate receiving component (4) forms a third channel (41) and a fourth channel (42) from top to bottom along the length direction, wherein the first channel (22) and the third channel (41) are connected to each other, and the second channel (23) and the fourth channel (42) are connected to each other.

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