Dual pole wiper connecting structure

Abstract

The utility model relates to the technical field of windscreen wiper, especially to a double-rod windscreen wiper connecting structure, including windscreen wiper drive arm and the clamping assembly for clamping boneless windscreen wiper, the clamping assembly includes connecting seat and clamping block, the windscreen wiper drive arm is rotatedly connected through first pivot with connecting seat, the connecting seat is equipped with bolt, the clamping block is opened with the insertion hole of bolt adaptation on, the connecting seat is inserted insertion hole with clamping block and forms rotary connection through bolt, the connecting seat still is equipped with the limiting slot that clamping block extends to, the both sides inner wall of limiting slot forms the limiting cooperation to both sides outer wall of clamping block, the one end of clamping block away from connecting seat clamps boneless windscreen wiper, the utility model has the advantages of connecting structure simplification and convenient to dismount.

Description

Technical Field

[0001] This utility model relates to the field of windshield wiper technology, and in particular to a dual-bar windshield wiper connection structure. Background Technology

[0002] Windshield wipers, also known as wipers, are devices used to wipe away raindrops and dust adhering to the windshield of a vehicle, improving driver visibility and increasing driving safety. Currently, there are many types of wiper arms on the market, mainly divided into framed wipers and frameless wipers. Framed wipers use a metal bracket with multiple small supports for balance, and the wiper blade is installed at the bottom of the bracket. Framed wipers are large and relatively complex in structure, and the uneven stress on the structure can lead to poor wiping performance. Frameless wipers, compared to framed wipers, have the advantages of simple structure and even stress on the wiper blade.

[0003] Patent CN217835575U discloses a special wiper arm for frameless wiper blades for car rearview mirrors. The wiper drive arm of this solution is connected to the connecting block on the frameless wiper by a snap-fit ​​bracket. The cooperation between the snap-fit ​​bracket and the connecting block makes it easy to disassemble and install the connected frameless wiper.

[0004] However, further investigation revealed the following problems with the solution: the snap-fit ​​socket and the connecting block not only require the snap-fit ​​groove and the snap-fit ​​block to be inserted, but also require the connecting pin and nut to be tightened. This connection structure is still too complicated, requiring tools to tighten or loosen the nut, making disassembly and assembly cumbersome. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a dual-bar wiper connection structure. This utility model has the advantages of simplified connection structure and convenient disassembly and assembly.

[0006] The technical solution adopted by this utility model is as follows: a dual-bar wiper connection structure, including a wiper drive arm and a clamping assembly for clamping a frameless wiper. The clamping assembly includes a connecting seat and a clamping block. The wiper drive arm is rotatably connected to the connecting seat through a first rotating shaft. The connecting seat is provided with a pin. The clamping block is provided with a hole adapted to the pin. The connecting seat is rotatably connected to the clamping block by inserting the pin into the hole. The connecting seat is also provided with a limiting groove for the clamping block to extend into. The inner walls on both sides of the limiting groove form a limiting fit with the outer walls on both sides of the clamping block. The end of the clamping block away from the connecting seat clamps the frameless wiper.

[0007] The connecting seat is bent into a side plate and a baffle, and a limiting groove is formed between the side plate and the baffle.

[0008] The pin is riveted to the end face of the side plate facing the baffle, and the pin is perpendicular to the side plate.

[0009] A first gap is provided between the baffle and the pin, and a second gap is provided between the end face of the clamping block away from the frameless wiper and the socket, wherein the first gap is greater than the second gap.

[0010] The end of the baffle near the first spacing has a chamfer, and the end of the pin has a rounded corner.

[0011] The pin and the socket are interference-fitted.

[0012] The clamping block has several grooves on both outer walls, and these grooves are distributed around the insertion hole.

[0013] It also includes a secondary drive arm, wherein the connecting seat extends an extension plate parallel to the pin, and the secondary drive arm is rotatably connected to the extension plate via a second rotating shaft.

[0014] The beneficial effects of this utility model are as follows: This utility model has the advantages of simplified connection structure and convenient assembly and disassembly. By using the simple plug-in cooperation of pin and socket, the quick rotation connection between the connecting seat and the clamping block is realized. Assembly and disassembly can be completed by hand, making the overall structure more neat and compact. The limiting groove on the connecting seat limits the clamping block to prevent the clamping block from falling off the pin. It can also effectively prevent the clamping block from shaking or shifting when swinging the wiper. The force applied to the connecting seat by the wiper drive arm can also be more evenly transmitted to the clamping block and the frameless wiper. At the same time, it ensures the stability and reliability of the connection, enhances the fit between the frameless wiper and the windshield, and helps to improve the cleaning ability of the wiper. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a schematic diagram of the connection structure of the dual-bar wiper of this utility model;

[0017] Figure 2 This is a partially enlarged schematic diagram of the present invention;

[0018] Figure 3 This is a partially enlarged schematic diagram of the present invention, showing the removal of the clamping block and the frameless wiper.

[0019] Figure 4 This is a schematic diagram of the clamping block in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the clamping block holding the frameless wiper in this utility model;

[0021] In the diagram, 1-wiper drive arm, 2-frameless wiper, 3-connector, 4-clamping block, 5-first pivot, 6-pin, 7-hole, 8-limiting groove, 9-side plate, 10-baffle, 11-first gap, 12-second gap, 13-chamfer, 14-rounded corner, 15-groove, 16-secondary drive arm, 17-extension plate, 18-second pivot. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0023] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0024] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0025] like Figures 1 to 5 As shown, this is an embodiment of the present invention, a dual-bar wiper connection structure, including a wiper drive arm 1 and a clamping assembly for clamping a frameless wiper 2. The clamping assembly includes a connecting seat 3 and a clamping block 4. The wiper drive arm 1 is rotatably connected to the connecting seat 3 via a first rotating shaft 5. The connecting seat 3 is provided with a pin 6. The clamping block 4 is provided with a socket 7 adapted to the pin 6. The connecting seat 3 is rotatably connected to the clamping block 4 by inserting the pin 6 into the socket 7. The connecting seat 3 is also provided with a limiting groove 8 for the clamping block 4 to extend into. The inner walls on both sides of the limiting groove 8 form a limiting fit with the outer walls on both sides of the clamping block 4. The end of the clamping block 4 away from the connecting seat 3 clamps the frameless wiper 2.

[0026] The beneficial effects of this design are as follows: This utility model has the advantages of simplified connection structure and convenient assembly and disassembly. Utilizing the simple plug-in connection between the pin and the socket, a quick rotational connection between the connecting seat and the clamping block is achieved. Assembly and disassembly can be completed by hand, making the overall structure neater and more compact. The limiting groove on the connecting seat limits the clamping block, preventing it from detaching from the pin and effectively preventing the clamping block from shaking or shifting during swishing. The force applied to the connecting seat by the wiper drive arm can also be more evenly transmitted to the clamping block and the frameless wiper, ensuring the stability and reliability of the connection, enhancing the fit between the frameless wiper and the windshield, and helping to improve the cleaning ability of the wiper. The socket can be a countersunk hole or a through hole; in this embodiment, the socket is a through hole, facilitating the pin's passage and making the rotational connection more stable.

[0027] Furthermore, the connecting seat 3 is bent into a side plate 9 and a baffle 10, and a limiting groove 8 is formed between the side plate 9 and the baffle 10.

[0028] The beneficial effects of this design are as follows: the connecting seat is integrally formed with the side plate and baffle through a bending process, thus constituting the limiting groove. This design simplifies the manufacturing process, reduces production costs, and enhances the overall structural strength and rigidity of the connecting seat. The integrally formed limiting groove has better dimensional accuracy and consistency, ensuring the stability and precision of the limiting fit with the clamping block, further improving the reliability and wiping effect of the wiper during operation.

[0029] Furthermore, the pin 6 is riveted to the end face of the side plate 9 facing the baffle 10, and the pin 6 is perpendicular to the side plate 9.

[0030] The advantages of this design are as follows: The pin is fixed to the side plate end face via riveting, ensuring it is perpendicular to the side plate. This connection method is robust and non-removable, effectively preventing the pin from loosening or falling off during daily use, greatly improving the durability and reliability of the rotating connection parts of the clamping assembly. The vertical arrangement ensures that the pin's axis is aligned with the rotation axis, making the rotation of the clamping block smoother and less prone to jamming. It also guarantees the directionality and stability of force transmission, contributing to improved uniformity of the scraping effect. Furthermore, the riveting process is mature and reliable, facilitating automated production and improving assembly efficiency.

[0031] Further, a first gap 11 is provided between the baffle 10 and the pin 6, and a second gap 12 is provided between the end face of the clamping block 4 away from the frameless wiper 2 and the socket 7, wherein the first gap 11 is greater than the second gap 12.

[0032] The beneficial effects of this design are as follows: The structure cleverly limits the rotation angle of the clamping block. When the wiper needs to be removed, the user can rotate the clamping block away from the baffle, utilizing this larger initial gap as operating space. This allows the end face of the clamping block to be unobstructed by the baffle, enabling tool-free, quick manual removal and installation. Simultaneously, this dimensional relationship, through the contact between the baffle and the end face of the clamping block during daily wiping operations, provides a mechanical limit, preventing excessive reverse rotation of the clamping block and ensuring the stability and reliability of the structure during operation.

[0033] Furthermore, the end of the baffle 10 near the first spacing 11 is provided with a chamfer 13, and the end of the pin 6 is provided with a rounded corner 14.

[0034] The benefits of this design are as follows: the rounded corners facilitate quick and accurate alignment of the pins and the holes on the clamping blocks; the chamfered corners provide clearance for the clamping blocks during disassembly, further increasing the spacing and improving the ease of assembly and disassembly.

[0035] Furthermore, the pin 6 and the socket 7 are interference-fitted.

[0036] The beneficial effects of this design are as follows: the interference fit effectively eliminates the gap between the pin and the socket, making the rotational connection between the clamping block and the connecting seat tighter and without shaking, effectively preventing loosening, and also helping to improve the stability and uniformity of the scraping.

[0037] Furthermore, the clamping block 4 has several grooves 15 on both outer walls, and the grooves 15 are distributed around the insertion hole 7.

[0038] The benefits of this design are as follows: the groove reduces the size of the clamping block while ensuring structural strength and preventing product deformation during injection molding, thus reducing costs.

[0039] Further configuration includes a secondary drive arm 16, wherein the connecting seat 3 extends an extension plate 17 parallel to the pin 6, and the secondary drive arm 16 is rotatably connected to the extension plate 17 via a second rotating shaft 18.

[0040] The beneficial effects of this setup are as follows: by setting a secondary drive arm in parallel with the main wiper drive arm, a dual-point drive structure is formed, which effectively improves the uniformity of pressure on the wiper blade throughout the entire wiping stroke, especially at both ends of the long wiper blade. This greatly enhances the structural rigidity and overall stability during the wiping process, making the operation smoother and more stable, thereby significantly improving the cleanliness and consistency of wiping.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A dual-bar wiper connection structure, comprising a wiper drive arm (1) and a clamping assembly for clamping a frameless wiper (2), characterized in that: The clamping assembly includes a connecting seat (3) and a clamping block (4). The wiper drive arm (1) is rotatably connected to the connecting seat (3) via a first rotating shaft (5). The connecting seat (3) is provided with a pin (6). The clamping block (4) is provided with a socket (7) that is compatible with the pin (6). The connecting seat (3) is rotatably connected to the clamping block (4) by inserting the pin (6) into the socket (7). The connecting seat (3) is also provided with a limiting groove (8) for the clamping block (4) to extend into. The inner walls on both sides of the limiting groove (8) form a limiting fit with the outer walls on both sides of the clamping block (4). The end of the clamping block (4) away from the connecting seat (3) clamps the frameless wiper (2).

2. The dual-bar wiper connection structure according to claim 1, characterized in that: The connecting seat (3) is bent into a side plate (9) and a baffle (10), and a limiting groove (8) is formed between the side plate (9) and the baffle (10).

3. The dual-bar wiper connection structure according to claim 2, characterized in that: The pin (6) is riveted to the end face of the side plate (9) facing the baffle (10), and the pin (6) is perpendicular to the side plate (9).

4. The dual-bar wiper connection structure according to claim 3, characterized in that: A first gap (11) is provided between the baffle (10) and the pin (6), and a second gap (12) is provided between the end face of the clamping block (4) away from the frameless wiper (2) and the socket (7). The first gap (11) is greater than the second gap (12).

5. The dual-bar wiper connection structure according to claim 4, characterized in that: The end of the baffle (10) near the first spacing (11) is provided with a chamfer (13), and the end of the pin (6) is provided with a rounded corner (14).

6. The dual-bar wiper connection structure according to claim 1, characterized in that: The pin (6) and the socket (7) are interference fit.

7. The dual-bar wiper connection structure according to claim 1, characterized in that: The clamping block (4) has several grooves (15) on both outer walls, and the grooves (15) are distributed around the insertion hole (7).

8. The dual-bar wiper connection structure according to claim 1, characterized in that: It also includes a secondary drive arm (16), the connecting seat (3) extends with an extension plate (17) parallel to the pin (6), and the secondary drive arm (16) is rotatably connected to the extension plate (17) via a second rotating shaft (18).

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