An adaptive wiper bracket and wiper blade thereof

Abstract

This application discloses an adaptive wiper bracket, which includes a main spring, N rigid connecting brackets, and N retainers. The main spring has N first mounting holes, where N is a positive integer greater than or equal to 2. Each rigid connecting bracket has an arched mounting groove in its middle, with claw portions at both ends for connecting to the wiper blade. The mounting groove opens downwards, and a second mounting hole is formed on its top wall. Each first mounting hole and second mounting hole are positioned opposite each other. The retainers include a fixing block and a locking element. The upper part of the fixing block protrudes from the middle. A limiting part is provided, and the rigid connecting frame can only swing up and down along the length direction of the main spring piece according to the swing trajectory preset by the swing connecting part. The front and rear parts of the fixing block are also provided with abutting support part to prevent the fixing block from swinging up and down relative to the width direction of the main spring piece. The top wall of the mounting groove forms a hollow relief part at the position relative to the abutting support part, so that the top of the abutting support part protrudes upward from the relief part. The locking fastener makes the abutting support part and the limiting part jointly abut against the bottom surface of the main spring piece.

Description

Technical Field

[0001] This invention relates to the field of windshield wiper accessories, and more particularly to a windshield wiper bracket that can adaptively adjust the elastic pressure transmitted to the wiper blade according to the curvature of the windshield surface, and a windshield wiper equipped with the wiper bracket. Background Technology

[0002] like Figure 1a CN201484362U discloses an early adaptive wiper bracket design, which includes a main spring 3' and several secondary springs 4'. The main spring 3' and secondary springs 4' are movably connected by suspension rivets 5'. The wiper blade is held by the blade slots 42' of the secondary springs 4'. With this structure, the wiper bracket, since both the main spring 3' and secondary springs 4' are made of metal, are only connected by the suspension rivets 5' passing through the hanging parts of the secondary springs 4'. The holes and fixing holes of the main spring 3' are connected to each other, so that there is a preset gap between the main spring 3' and each of the auxiliary springs 4', so as to realize the movable connection between each auxiliary spring 4' and the main spring 3'. According to the product design requirements, the movable connection between the two is limited to the auxiliary spring 4' swinging up and down relative to the length direction of the main spring 3' with the suspension rivet 5' as the rotation fulcrum. It is not desirable for the auxiliary spring 4' to twist up and down along the width direction of the main spring 3' with the suspension rivet 5 as the rotation fulcrum (which would cause the wiper blade rubber strip to be pressed). Fluctuations in force distribution cause slight vibrations in the wiper blade during wiping, affecting the cleanliness of the wiper blade. Specifically, the suspension rivet 5' cannot completely lock the main spring 3' and the secondary spring 4' together, nor can it allow for a large gap between them. If the pressure of the suspension rivet 5' is too large, the secondary spring 4' has limited space to move relative to the main spring 3', making it difficult for the secondary spring 4' to swing up and down along its length relative to the main spring 3', resulting in the wiper blade not fitting properly against the curvature of the glass. If the pressure of the suspension rivet 5' is too small, the gap between the secondary spring 4' and the main spring 3' is too large, leading to problems such as the secondary spring 4' twisting up and down along the width of the main spring 3' with the suspension rivet 5' as its pivot point, and the secondary spring 4' making noises during its swing relative to the main spring 3'. Therefore, this technical solution requires very high processing precision from the riveting equipment, but conventional riveting equipment often lacks precision, making it difficult to ensure the consistency of the suspension rivet 5' assembly.

[0003] In view of this, such as Figures 1b to 1cCN113261012A discloses an improved adaptive wiper bracket, in which the adjusting spring 200' (equivalent to the main spring of the previous model) and the balance connector 300' (equivalent to the auxiliary spring of the previous model) are movably connected by an added retainer 400'. This patent document discloses two different embodiments of the retainer 400', each retainer 400' including at least a retaining block 410'. In one embodiment, the retainer 400' is configured with a separate mounting shaft 420' (equivalent to a rivet in the previous model). The retaining block 410' is nested into the mounting groove of the balance connector 300', and the top wall of the mounting groove has an opening for connection with the retaining block 410. The upper protrusion 4101' of the fixing block 410' is matched with the mounting hole, allowing the upper protrusion 4101' to protrude from the mounting hole. Then, the upper protrusion 4101' of the fixing block 410' is riveted to the bottom surface of the adjusting spring 200' by the mounting shaft 420', so that a certain movable gap is preset between the balance connector 300' and the adjusting spring 200'. At the same time, the rotating mounting parts 412' on both sides of the fixing block 410' rotate and engage with the rotating latches 311' on both sides of the mounting groove, thereby realizing the movable connection between the fixing block 410' and the balance connector 300'. Compared with the previous one, since the fixing block 410' (usually made of plastic) is added, it is only necessary to control the fixing block 410'. To achieve dimensional accuracy of 0', the fixing block 410' and the adjusting spring 200' are riveted together using the mounting shaft 420'. This allows the upper protrusion 4101' of the fixing block 410' to press against the bottom surface of the adjusting spring 200' through the riveting pressure of the mounting shaft 420'. This effectively controls the movement gap between the balance connector 300' and the adjusting spring 200', overcoming the technical problem of inconsistent riveting assembly in previous designs. It also effectively reduces the vertical wobble of the balance connector 300' relative to the adjusting spring 200' in the width direction and effectively reduces noise generated during the brushing process. However, this structure also introduces the following three new problems: Problem 1: To ensure the dimensional accuracy of the fixing block 410'... The upper protrusion 4101' has sufficient contact area with the adjusting spring 200', especially along the width direction of the balance connector 300' (reducing the vertical sway of the balance connector 300' relative to the adjusting spring 200' in the width direction). Therefore, the upper protrusion 4101' needs to extend towards the width direction of the balance connector 300', resulting in a small space in the remaining area along the width direction of the balance connector 300' after removing the mounting hole from the top wall of the mounting groove. In addition, the mounting groove rotation latch 311' will result in the balance connector 300' having the weakest strength at the upper wall and side wall of the mounting groove, making it prone to cracking, bending deformation, and product scrapping in this area.Question 2: If the size of the opening on the top wall of the mounting slot is reduced (mainly shortening the width of the adjusting spring 200'), the area of ​​the upper protrusion 4101' of the fixing block 410' will be reduced, decreasing the contact area between it and the adjusting spring 200'. More importantly, the upper protrusions 4101' are all set around the periphery of the mounting shaft 420', shortening the length of the upper protrusions 4101' supporting the adjusting spring 200' along the width. Furthermore, when the wiper is in operation, the wiping force of the wiper blade will cause the fixing block 410' to sway along the width, accelerating the contact wear between the upper protrusions 4101' and the adjusting spring 200'. Ultimately, this will cause the balance connector 300' to sway up and down relative to the adjusting spring 200' along the width, affecting the wiper wiping quality. Question 3: The width of the adjusting spring 200' needs to be set to be greater than the width of the balance connector 300'. The remaining area after subtracting the width of the balance connector 300' from the adjusting spring 200' by half can be used for the sliding groove of the air guide sleeve to pass through. The bottom of the fixing block 410' is provided with a clearance groove 411' for the wiper blade to pass through. Therefore, the overall width of the balance connector 300' is the width of the wiper blade + the thickness of the two side walls of the clearance groove 411' + the thickness of the two side walls of the mounting groove (balance connector 300'). Given a fixed wiper blade width, to avoid the wiper blade becoming too wide and bulky, thus affecting the driver's vision, and while ensuring the strength of the balance connector 300', the width of the adjusting spring 200' must be reduced. This results in limited space for the remaining area of ​​the adjusting spring 200' to pass through the air guide sleeve, making it impossible to achieve a very stable connection between the air guide sleeve and the adjusting spring 200'.

[0004] Later, the industry revealed another type of windshield wiper, such as... Figure 1d Referring to CN220904920U, its connecting block 500' (equivalent to the fixed block of conventional two) lacks the design of a clearance groove, but its upper limit part 510' is exactly the same as the upper protrusion design of conventional two. It will at least produce technical problem 2 as revealed in conventional technology 2, and is also the same as (problem 1 to problem 3). Furthermore, the semi-cylindrical parts 520' on both sides of the connecting block 500' abut against the inner sidewall of the connecting frame 400' (equivalent to the balance connector of conventional two). This setting will affect the degree of freedom of the connecting frame 400' and the elastic sheet in terms of movable connection. In addition, the positioning slots 521' between the outer sidewall of the two semi-cylindrical parts 520' of the connecting block 500' and the two inner sidewalls of the connecting frame 400' are matched with the locking protrusion. This will further affect the up and down swing of the connecting frame 400' relative to the spring sheet in the length direction, affecting the adhesion between the wiper blade and the windshield, and adversely affecting the wiping of the wiper.

[0005] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0006] The primary objective of this application is to provide an adaptive wiper bracket with a long service life and stable elasticity adjustment.

[0007] The second objective of this invention is to provide an adaptive wiper bracket that can effectively improve production efficiency, while satisfying the first objective.

[0008] The third objective of this invention is to provide a windshield wiper with a long service life and high cleaning efficiency.

[0009] This application includes the following explanations of spatial orientation terms: The length direction of the fixing block refers to the length direction of the rigid connecting frame along which the fixing block is embedded in the mounting groove of the rigid connecting frame. That is, the length direction of the fixing block is consistent with the length direction of the rigid connecting frame and is consistent with the X-axis direction indicated in the figure.

[0010] The front and rear directions of the fixed block are consistent with the length direction of the fixed block.

[0011] The left and right directions of the fixed block are consistent with the width direction of the fixed block.

[0012] The length direction of the rigid connecting frame is parallel to the length direction of the main spring plate.

[0013] To achieve the first objective of this invention, this application discloses an adaptive wiper bracket, comprising a main spring, N rigid connecting frames, and N retainers. The main spring has N first mounting holes, where N is a positive integer greater than or equal to 2. Each rigid connecting frame has an arched mounting groove in its middle, with claw portions at both ends for connecting to the wiper blade. The mounting groove opens downwards, and a second mounting hole is formed on its top wall, with each first mounting hole and second mounting hole positioned opposite each other. Each retainer includes a fixing block and a locking component. A limiting portion protrudes from the upper middle part of the fixing block. The fixing block is disposed within the mounting groove, and the top of its limiting portion protrudes upwards from the second mounting hole. A swing connection portion is disposed between the fixing block and the mounting groove, allowing the rigid connecting frame to swing only along the length direction of the main spring. The swing connection part swings up and down along the preset swing trajectory. One end of the locking fastener passes through the first mounting hole and forms a limiting connection with the main spring piece along the height direction. The other end is connected to the fixing block, so that the top of the limiting part of the fixing block abuts against the bottom surface of the main spring piece. At this time, the fixing block and the main spring piece are locked in the height direction, ensuring that there is a preset movable gap between the main spring piece and each rigid connecting frame along the height direction. The front and rear parts of the fixing block are also provided with abutting support to prevent the fixing block from swinging up and down relative to the width direction of the main spring piece. The top wall of the mounting groove forms a hollow relief part at the position relative to the abutting support part, so that the top of the abutting support part protrudes upward from the relief part. The locking fastener makes the abutting support part and the limiting part abut against the bottom surface of the main spring piece.

[0014] With the above structure, the top contact surface between the fixing block and the bottom surface of the main spring is not limited to the top end face of the limiting part. Instead, additional abutment support parts are added to the front and rear parts of the fixing block for abutment support. This ensures that the front, middle, and rear parts of the fixing block have parts for abutment support with the main spring, providing more abutment support points / surfaces between the fixing block and the main spring. This ensures a stable top-abutment connection between the fixing block and the main spring for a long time, preventing unexpected swinging or shaking of the rigid connecting frame and the main spring caused by slight swaying or shaking between the fixing block and the main spring (such as the rigid connecting frame swinging relative to the main spring in the width direction, i.e., the rigid connecting frame swinging left and right relative to the main spring with the X-axis of the center line of the main spring as the swing axis), which would affect the service life. At the same time, since the fixing block has additional abutment support parts at the front and rear, the top contact area of ​​the top of the limiting part can be appropriately reduced, the opening size of the second mounting hole can be reduced, and the structural strength of the rigid connecting frame is also improved.

[0015] In one embodiment of the abutment support, the vertical projection surface of the fixing block is rectangular, and the abutment support consists of a limiting post protruding upward at each end of one of the diagonals of the fixing block. The clearance portion of the top wall of the mounting groove consists of a clearance hole corresponding to the position of the limiting post, so that the top of the limiting post protrudes upward beyond the clearance hole. A space is left between each clearance hole and the corresponding limiting post along the length direction of the fixing block.

[0016] Furthermore, the abutment support is provided with a limiting post protruding upward at each end of the two diagonals of the fixed block.

[0017] With the above structure, the limiting posts are not only located at the front and rear of the fixing block, but also arranged at both ends along the width direction of the fixing block. The distance between the two limiting posts along the width direction of the fixing block is greater than the longest width of the limiting part. This can minimize the left and right sway of the fixing block along the width direction of the main spring sheet and further improve the service life.

[0018] To achieve the second objective of the present invention, this application also discloses that a pre-positioning structure is added between the fixing block and the mounting groove to enable the fixing block to be embedded in the mounting groove.

[0019] One embodiment of the prepositioning structure includes positioning protrusions protruding from the left and right sides of the fixing block, and positioning through holes formed on the two side walls of the mounting groove at positions relative to the positioning protrusions. The positioning protrusions at least partially extend into the positioning through holes and interfere with each other along the height direction.

[0020] Furthermore, the top of the positioning protrusion has a guide surface, and the lower part of the two side walls of the mounting groove that overlaps with the moving trajectory of the positioning protrusion is bent outward to form a first folded edge. The inner wall side of the first folded edge forms a first clearance slope to facilitate the upward sliding of the positioning protrusion.

[0021] In one embodiment, a triangular guide portion is disposed in the upper middle part of the positioning protrusion, the inner contour of the positioning through hole matches the outer contour of the positioning protrusion, and a guide opening is provided on both sides of the mounting groove below the positioning through hole to match the slope of the triangular guide portion of the positioning protrusion, so that the positioning protrusion is nested into the positioning through hole through the guide opening.

[0022] In one embodiment, the pre-positioning structure includes positioning protrusions protruding from the left and right sides of the fixing block, and the lower middle part of the two side walls of the mounting groove, which are bent outward from top to bottom relative to the positioning protrusions to form folds constructed by a first fold and a second fold. The top of the positioning protrusion has a guide surface, and a stop surface is formed at the junction of the first fold and the second fold. The inner wall sides of the two first folds and the inner wall sides of the two second folds are respectively formed with a first clearance slope and a second clearance slope to facilitate the upward sliding of the positioning protrusion. The stop surface and the bottom of the positioning protrusion abut against each other to limit the downward displacement of the fixing block relative to the mounting groove.

[0023] In one embodiment, the pre-positioning structure includes circular positioning protrusions protruding from the left and right sides of the fixing block, and the two side walls of the mounting groove forming a downward-facing rotating latch at a position relative to the positioning protrusions, wherein the diameter of the positioning protrusion is greater than the distance between the open ends of the rotating latch.

[0024] By adopting the above-mentioned pre-positioning structure, there is no need to set up additional fixtures to achieve pre-positioning of the two during production. The fixing block is pre-positioned with the rigid connecting frame by means of the pre-positioning structure. During the transfer of parts, the fixing block will not fall out of the rigid connecting frame. Then, the rigid connecting frame and the main spring are connected by fasteners, which reduces production costs and improves production efficiency.

[0025] To achieve the third objective of this invention, this application also discloses a windshield wiper with any of the aforementioned adaptive wiper brackets. The adaptive wiper bracket can better transmit the pushing force applied by the main spring blade, and can better adapt and adjust its swing according to the curvature of the windshield surface, ensuring the adhesion of the wiper blade to the windshield surface, guaranteeing the cleanliness of the wiper, and after long-term use, the rigid connecting bracket will not produce unexpected swinging with the main spring blade, thus extending the service life of the wiper. Attached Figure Description

[0026] The specific description given as a non-limiting example better explains what the invention includes and how it can be practiced. Furthermore, this description refers to the accompanying drawings, in which: Figure 1a Exploded 3D view of the commonly used CN201484362U adaptive wiper bracket; Figures 1b to 1c Assembly diagram and partial exploded view of the commonly used CN113261012A adaptive wiper bracket; Figure 1d Exploded 3D view of the CN220904920U adaptive wiper bracket; Figure 2a This invention discloses a schematic diagram of one embodiment of a windshield wiper with an adaptive wiper bracket; Figure 2b for Figure 2a A schematic diagram of the default windshield wiper deflector cover; Figure 2c for Figure 2a Exploded view of a windshield wiper; Figure 3a This application presents an assembly diagram of the rigid connecting frame and the fixing device (the locking device uses rivets). Figure 3b An exploded view of the rigid connecting frame and fixing device of this application; Figure 3c This application includes an assembly diagram of the rigid connecting frame, the fixing device, and the main spring plate; Figure 3d for Figure 3c Longitudinal cross-sectional view; Figure 3e for Figure 3c A longitudinal cross-section showing the wiper blades; Figure 3f for Figure 3c A cross-sectional view of the wiper blade; Figure 4 A schematic diagram showing the use of limit bars for the abutment support of the fixed block; Figure 5a An exploded view of a pre-positioning structure provided between the rigid connecting frame and the fixed block (first embodiment). Figure 5b Assembly diagram of a pre-positioning structure between a rigid connecting frame and a fixed block (first embodiment); Figure 6a Assembly diagram of a pre-positioning structure between a rigid connecting frame and a fixed block (second embodiment); Figure 6b for Figure 6a A cross-sectional view; Figure 7a An exploded view of a pre-positioning structure provided between the rigid connecting frame and the fixed block (third embodiment). Figure 7b Assembly diagram of a pre-positioning structure between a rigid connecting frame and a fixed block (third embodiment); Figure 7c for Figure 7b A cross-sectional view; Figure 8a An exploded view of a pre-positioning structure provided between the rigid connecting frame and the fixed block (fourth embodiment). Figure 8b Assembly diagram of a pre-positioning structure between a rigid connecting frame and a fixed block (fourth embodiment); Figure 9aAn exploded view of a pre-positioning structure (fifth embodiment) provided between a rigid connecting frame and a fixed block, and one embodiment of a swing connection part; Figure 9b Figure 9a Assembly drawing; Figure 9c for Figure 9a A deformed form (missing a circle) of a positioning protrusion; Figure 9d for Figure 9a An exploded view of the positioning protrusion adding a cap brim; Figure 9e for Figure 9a A frontal view of the fixed block; Figure 9f for Figure 9a A schematic diagram of the bottom of the fixing block; Figure 10a This application presents an exploded view of the rigid connecting frame and the fixing device (the locking part is a locking part integrally formed with the fixing block). Figure 10b Top view of the main spring sheet and the rigid connecting frame in the assembled state (first embodiment of the locking part); Figure 10c A top view of the main spring sheet and the rigid connecting frame in the intermediate transition state from assembly to locking (first embodiment of locking part); Figure 10d Top view of the main spring sheet and the rigid connecting frame in the locked state (first embodiment of the locking part); Figure 11a Top view of the main spring sheet and the rigid connecting frame in the assembled state (second embodiment of the locking part); Figure 11b Top view of the main spring sheet and the rigid connecting frame in the locked state (second embodiment of the locking part); Figure 11c for Figure 11a A schematic diagram of a deformed part of the straight rod section of the middle locking part; Figure 12a Top view of the main spring sheet and the rigid connecting frame in the assembled state (third embodiment of the locking part); Figure 12b Top view of the main spring sheet and the rigid connecting frame in the locked state (third embodiment of the locking part); Figure 13 This is a schematic diagram of the rigid connecting frame and the fixed block abutting against the support (the locking fasteners are rivets). Figure 14 This is a schematic diagram of the rigid connecting frame and the fixed block abutting against the support part by default (the locking part is a locking part integrally formed with the fixed block). Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 2a to 2c This application discloses a windshield wiper 1000 with an adaptive wiper bracket, which includes an adaptive wiper bracket 100, two guide sleeves 5, a wiper blade 4, two metal springs 41 for being embedded in slots on the left and right sides of the wiper blade 4, and a connector assembly 6. The adaptive wiper bracket 100 includes a main spring 1, N rigid connecting brackets 2, and N retainers 3. The main spring 1 has N first mounting holes 11, where N is a positive integer greater than or equal to 2. Each rigid connecting bracket 2 is movably connected to the main spring 1 and has claw portions 22 at both ends to clamp the wiper blade 4 with two metal springs 41 (e.g., Figure 3f The connector assembly 6 includes a connecting base 61, an adapter 62, and a decorative cover 63. The connecting base 61 is fixed to the middle of the main spring 1. The adapter 62 is pivotally connected to the connecting base 61. The adapter 62 can be replaced according to different wiper arm types to adapt to different wiper arms, thereby improving the compatibility of the wiper 1000. The decorative cover 63 is disposed around the connecting base 61 and snapped onto the main spring 1 to enhance the aesthetic design of the product. Of course, in some embodiments, the decorative cover 63 can be omitted. This embodiment discloses... The airflow guide sleeve 5 has a closed end and an insertion end at the other end. Sliding grooves are provided on the left and right sides of its inner cavity. The airflow guide sleeve 5 is inserted into the end of the main spring piece 1 through the insertion end, and engages with both sides of the main spring piece 1 through the sliding grooves. The closed end of the airflow guide sleeve 5 is also engaged with the end of the main spring piece 1 to achieve fixation. Of course, this application does not exclude the possibility of using an external end clip to fix the airflow guide sleeve 5 and the main spring piece 1. The main improvement of the wiper 1000 disclosed in this application lies in the adaptive wiper bracket 100, which is described in detail below:

[0029] like Figures 3a to 3fThe first mounting hole of the main spring piece 1 is a circular through hole 11a. The main structure of the rigid connecting frame 2 is a U-shaped channel steel structure, with an upwardly arched mounting groove 21 in the middle. Both ends of the groove are provided with claw portions 22 for connecting with the wiper blade 4. The mounting groove 21 opens downwards, and a second mounting hole 211 is opened on its top wall. The second mounting hole 211 is opposite to the first mounting hole 11a. The second mounting hole 211 is used for the limiting portion 311 of the fixing block 31 to pass through, and there is space between the limiting portion 311 and the front and rear of the limiting portion 311 so that the limiting portion 311 can swing back and forth relative to the second mounting hole 211. The fixing device 3 includes a fixing block 31 and a rivet 32a. The rivet 32a is one embodiment of the locking device 32. The fixing block 31 is rectangular, with a circular limiting portion 311 protruding from the upper part of its middle. The front and rear parts are also provided with a rivet to prevent the fixing block 31 from moving relative to the width direction of the main spring piece 1. The mounting groove has an upper and lower swaying support part 312. The top wall of the mounting groove forms a hollow clearance part 212 at a position relative to the support part 312. The support part 312 has a limiting post 312a protruding upward at each end of the two diagonals of the fixing block 31. The clearance part 212 of the top wall of the mounting groove has a clearance hole 212a corresponding to the position of the limiting post 312a. Each clearance hole 212a and the corresponding limiting post 312a have a space for the limiting post 312a to swing back and forth relative to the clearance hole 212 along the length direction of the fixing block 31. The clearance hole 212a and the corresponding limiting post 312a are clearance-fitted along the width direction of the fixing block 31. The fixing block 31 is set in the mounting groove 21 and the top of its limiting part 311 protrudes upward from the second mounting hole 211, so that the top of the limiting post 312a protrudes upward from the clearance hole 212a. Of course, the limiting posts 312a can also be set at only one end of one diagonal of the fixing block 31 (not shown in the figure), but compared with the former embodiment with four limiting posts 312a, it is obvious that the stability of the main spring piece 1 supported by only two limiting posts 312a is weaker than that of the embodiment with four limiting posts 312a. Figure 4This application also discloses another embodiment of the abutment support 312, which is a limiting strip 312b protruding upward along the width direction of the fixing block 31. The clearance part 212 of the top wall of the mounting groove is a clearance through groove (not shown) opened at the position relative to the transverse strip. Through the mutual abutment support between the limiting strip 312b and the bottom surface of the main spring piece 1, the phenomenon of the fixing block 31 swinging up and down relative to the width direction of the main spring piece 1 can also be restricted. Although this solution can provide more abutment contact area for the main spring piece 1, since the clearance through groove will weaken the structural strength of the rigid connecting frame 2, it is not the preferred solution of this application. It is just an equivalent alternative solution that satisfies the same inventive concept but has relatively poor technical effect. The following description takes the abutment support 312 of the fixing block 31 as four limiting posts 312a as an example. In a preferred design, the two side walls 213 of the mounting groove extend upwards to form a support wall 214 at a position relative to the clearance hole 212a. This support wall 214 is used to abut against and limit the movement of the abutment support 312. The height of the support wall 214 is insufficient to constrain the relative swing between the rigid connecting frame 2 and the main spring piece 1, further limiting the left and right sway of the abutment support 312 relative to the mounting groove 21 along its width direction.

[0030] A swing connection R is configured between the fixing block 31 and the mounting groove 21. One embodiment of the swing connection R is that an upwardly protruding arc-shaped top 313 is formed on the left and right sides of the fixing block 31. The highest point of this arc-shaped top 313 is lower than the top surface of the limiting part 311. The inner top wall 215 of the mounting groove is preferably designed to have an arc-shaped contact surface. The radius of curvature of this arc-shaped contact surface is greater than the radius of curvature of the arc-shaped top 313. Through the mutual contact between the arc-shaped top 313 of the fixing block 31 and the inner top wall 215 of the mounting groove, the rigid connecting frame 2 can only swing up and down along the length direction of the main spring piece 1 along a preset swing trajectory of the contact arc surface between the arc-shaped top 313 and the inner top wall 215 of the mounting groove. That is, the rigid connecting frame 2 only swings up and down relative to the main spring piece 1 about the Y-axis (perpendicular to the length direction of the main spring piece) in a seesaw-like manner. Figure 3aIt should be noted that the relative swinging between the rigid connecting frame 2 and the fixed block 31 does not necessarily have to be achieved through a mating method with an arc-shaped contact surface. For example, if a swing fulcrum protrudes upward on both sides of the fixed block 31, and the inner top wall of the mounting groove 21 is provided with a space to accommodate the swing fulcrum to swing back and forth, the relative swinging between the rigid connecting frame 2 and the fixed block 31 can be achieved. However, the mating method using an arc-shaped contact surface is the most preferred. The rivet 32a passes through the first mounting hole 11a and the limiting through hole 3111. By riveting, one end of the rivet 32a is riveted to the main spring piece 1 along the height direction, and the other end is riveted to the fixed block 31. The limiting part 311 and the four limiting posts 312a of the fixed block 31 abut against the bottom surface of the main spring piece 1. At this time, the fixed block 31 and the main spring piece 1 are locked in the height direction, ensuring that there is a preset movable gap between the main spring piece 1 and each rigid connecting frame 2 along the height direction. The rigid connecting frame 2 can rotate horizontally relative to the main spring piece 1 (it needs to overcome the frictional resistance between the limiting part 311 and the limiting protrusion 312 and the bottom surface of the main spring piece 1). In order to reduce the manufacturing precision of the limiting post 312a and ensure that the limiting post 312a can necessarily abut against the bottom surface of the main spring piece 1, it is preferably designed that the limiting post 312a is slightly higher than the limiting part 311, so that when the rivet 32a is riveted, the top of the limiting post 312a is squeezed by the bottom surface of the main spring piece 1 to produce plastic deformation, ensuring the top contact of the two.

[0031] With the above structure, the top contact surface between the fixing block 31 and the bottom surface of the main spring piece 1 is not limited to the top end face of the limiting part 311 (the middle part of the fixing block 31). Instead, two additional limiting posts 312a are added to the front and rear parts of the fixing block 31, so that the front, middle and rear parts of the fixing block 31 have parts for abutting and supporting the main spring piece 1. The limiting posts 312a are arranged at both ends along the width direction of the fixing block 31. Compared with the adaptive wiper bracket disclosed in conventional 2 (CN113261012A), the following technical characteristics can be produced: 1. The fixing block 31 and the main spring piece are lifted. 1. The contact area between the two (assuming that the contact area between the top surfaces of the limiting parts of the two is the same); 2. The limiting of the fixing block 31 and the main spring piece 1 in the width direction is increased (the distance between the two limiting posts 312a in the width direction of the fixing block 31 is greater than the longest width of the limiting part 311), which delays the extrusion wear of the main spring piece 1 on the top end face of the limiting part 311; 3. The opening size of the second mounting hole 211 of the rigid connecting frame 2 can be greatly reduced. The limiting part 311 of this application can be simply designed as a circular boss without considering the extension in the width direction of the rigid connecting frame 2. The first two technical characteristics effectively improve the stability and service life of the connection between the fixing block 31 and the main spring piece 1 along the height direction, ensure that the rigid connecting frame 2 and the main spring piece 1 have a preset clearance along the height direction, and ultimately ensure that the rigid connecting frame 2 only swings up and down relative to the main spring piece 1 about the Y-axis. While ensuring that the rigid connecting frame 2 can swing up and down relative to the main spring piece 1 about the Y-axis, the good stability of the connection between the fixing block 31 and the main spring piece 1 ultimately minimizes the up and down swing of the rigid connecting frame 2 about the X-axis, thus effectively adjusting to the curvature of the windshield surface. Adjusting the swing amplitude of the rigid connecting frame 2 allows the wiper blade 4 to better adhere to the windshield surface, improving the cleanliness of the wiper. The third technical feature effectively improves the structural strength of the rigid connecting frame 2. The smaller the opening of the second mounting hole 211, the greater the structural strength of the rigid connecting frame 2. In contrast, the conventional technical solution 2 relies solely on the abutment support between the limiting part and the main spring to achieve the limiting connection between the two along the height direction. The size of the limiting part cannot be too small (especially in the width direction), otherwise it will easily cause the main spring to swing back and forth and left and right relative to the limiting part, making it impossible to achieve a stable connection between the fixing block and the main spring along the height direction.

[0032] Optimal design, such as Figure 3d and 3eThe fixing block 31 extends along its width to approach the two side walls 213 of the mounting groove. The bottom of the fixing block 31 has no outward protrusions. If there is no clearance groove design at the bottom, when the fixing block 31 and the main spring piece 1 are locked together along the height direction by rivets 32a, the bottom of the fixing block 31 is slightly higher than the inner top wall 221 of the claw portion, and the height difference D between the two is less than 1mm. A more preferable design is that the height difference D is less than 0.5mm. This design effectively reduces the overall height of the adaptive wiper bracket 100, thereby reducing the wind resistance generated by the wiper 1000 during wiping. More importantly, it can maximize the limitation of plastic deformation of the rigid connecting frame 2 in the mounting groove 21 area, or, when plastic deformation occurs in this area, it can control the plastic deformation within a predictable range, ensuring the adhesion of the wiper blade 4 to the windshield surface and extending the product's service life. The reason is explained as follows: the rigid connecting frame 2 itself is a metal component with relatively high structural strength, and it will not deform under stress. Visible elastic deformation exists, but since all objects possess an elastic modulus, differing only in its magnitude, the gap between the bottom of the fixing block 31 and the wiper blade 4 is extremely small, less than 1mm. Therefore, within this small deformation height range, the rigid connecting bracket 2 generally only undergoes elastic deformation and cannot produce plastic deformation. Even when the mounting groove 21 of the rigid connecting bracket 2 has large openings or openings on both sides 213 (such as positioning through holes 216, rotating latches 217, etc., which will be detailed later), resulting in a decrease in the strength of the rigid connecting bracket 2... While there is some weakening, it also leads to a decrease in its elastic modulus. In simpler terms, this means it may be more prone to elastic deformation, but the probability of transitioning from elastic to plastic deformation also increases. However, regardless of whether the rigid connecting frame 2 undergoes elastic or plastic deformation, when the bottom of the fixing block 31 abuts against the wiper blade 4, the wiper blade 4 is effectively supported by the windshield, effectively preventing further elastic or plastic deformation of the rigid connecting frame 2. This minimizes the impact on the angle change of the two claw portions 22 located on the rigid connecting frame 2, effectively ensuring the contact between the wiper blade 4 and the windshield surface. The fit is improved, enhancing the cleanliness of the wiper. Meanwhile, since the bottom of the fixing block 31 has no outward protrusions, compared to conventional technology 2, the rigid connecting bracket 2 can further shorten the width of the mounting groove 21 when inserting the same width wiper blade. Therefore, when the widths of the main spring pieces 1 of both are the same, the main spring piece 1 of this application can provide a larger insertion space for the guide sleeve 5, improving the stability of the connection between the two. Alternatively, when both provide the same insertion space for the guide sleeve 5, this application can use a smaller width main spring piece to reduce the overall manufacturing cost.

[0033] To facilitate the assembly of the rigid connecting frame 2 and the main spring piece 1, a pre-positioning structure Y is preferably added between the fixing block 31 and the mounting groove 21 to allow the fixing block 31 to be embedded into the mounting groove 21. This pre-positioning structure Y eliminates the need for additional fixtures during manufacturing, reducing production costs and improving efficiency. The following are different embodiments of the various pre-positioning structures Y: Example 1

[0034] like Figure 5a , 5b The prepositioning structure Y includes positioning protrusions 314 protruding from the left and right sides of the fixing block 31, and positioning through holes 216 formed on the two side walls 213 of the mounting groove at positions relative to the positioning protrusions 314. The positioning protrusions 314 extend at least partially into the positioning through holes 216 and interfere with each other along the height direction. In order to facilitate the sliding of the positioning protrusions 314 along the inner walls of the two side walls 213 of the mounting groove, a guide surface 3141 is provided on the top of the positioning protrusions 314. Example 2

[0035] like Figures 6a to 6b As a further improvement to Embodiment 1, the lower part of the two side walls 213 of the mounting groove, which overlaps with the moving trajectory of the positioning protrusion 314, is bent outward to form a first folded edge 2131. The inner wall side of the first folded edge 2131 forms a first clearance slope 21311 to facilitate the upward sliding of the positioning protrusion 314. Since the two first clearance slopes 21311 are designed to gradually narrow from bottom to top, there is a larger sliding space between the positioning protrusion 314 and the first clearance slope 21311, which facilitates the positioning protrusion 314 to slide along the first clearance slope 21311 and insert into the positioning through hole 216. Example 3

[0036] like Figures 7a to 7cThe prepositioning structure Y includes positioning protrusions 314 protruding from the left and right sides of the fixing block 31, and the lower middle part of the two side walls 213 of the mounting groove, which are bent outward from top to bottom relative to the positioning protrusions 314 to form a pleated part constructed by the first folded edge 2131 and the second folded edge 2132. The top of the positioning protrusion 314 has a guide surface 3141. The junction of the first folded edge 2131 and the second folded edge 2132 forms a stop surface 2133. The inner wall sides of the two first folded edges 2131 and the two second folded edges 2132 respectively form a first clearance slope 21311 and a second clearance slope 21321 to facilitate the upward sliding of the positioning protrusion 314. The stop surface 2133 and the bottom of the positioning protrusion 314 abut against each other to limit the downward displacement of the fixing block 31 relative to the mounting groove 21. With this structure, since there are no open areas on the two side walls 213 of the mounting groove 21 of the rigid connecting frame 2, the structural strength of the middle part of the rigid connecting frame 2 can be further improved. Example 4

[0037] like Figures 8a to 8b The pre-positioning structure Y includes positioning protrusions 314 protruding from the left and right sides of the fixing block 31, and positioning through holes 216 formed on the two side walls 213 of the mounting groove at positions relative to the positioning protrusions 314. A triangular guide portion 3142 is disposed in the upper middle part of the positioning protrusion 314. The inner contour of the positioning through hole 216 matches the outer contour of the positioning protrusion 314. The two side walls 213 of the mounting groove also have a guide opening 2161 below the positioning through hole 216, which matches the slope of the triangular guide portion 3142 of the positioning protrusion 314, so that the positioning protrusion 314 is nested into the positioning through hole 216 through the guide opening 2161. Example 5

[0038] like Figures 9a to 9b The pre-positioning structure Y includes circular positioning protrusions 315 protruding from the left and right sides of the fixing block 31, and two side walls 213 of the mounting groove forming a downward-facing rotating latch 217 relative to the positioning protrusions 315. The diameter of the positioning protrusions 315 is greater than the distance between the open ends of the rotating latch 217, ensuring that the positioning protrusions 315 will not slide out from the open ends of the rotating latch 217. Figure 9c As a modified version of this, the lower part of the positioning protrusion 315 is dematerialized to form a partially rounded body 3151. This partially rounded body 3151 is larger than half the size of the undematerialized positioning protrusion 315, so that the bottom surface of the partially rounded body 3151 is flush with the bottom surface of the fixing block 31. A more preferred design, such as... Figure 9d and 9eThe positioning protrusions 315 are located on the lower part of both sides of the fixing block 31, with a portion extending below the sides, making the positioning protrusions 315 suspended below the fixing block 31. The positioning protrusions 315 in the suspended area are defined as the suspended portion 3152. A reinforcing block 3154 is added between the suspended portion 3152 and the bottom surface of the fixing block 31. This reinforcing block is a reinforcing block with rounded corners. This structural design can better reduce the height of the fixing block 31 in the mounting groove 21, and better achieve the technical effect described above where the bottom of the fixing block 31 is slightly higher than the inner top wall 221 of the claw portion. In a more optimized design, the positioning protrusions 315 have an outwardly protruding cap 3153, which further constrains the relative displacement between the fixing block 31 and the side wall 213 of the mounting groove along the width direction of the fixing block 31.

[0039] This application also provides a technical solution to replace the aforementioned swing connection R, such as... Figures 9a to 9e The technical solution of embodiment 5 of the prepositioning structure also has a swing connection part R. That is, the relative swing between the rigid connecting frame 2 and the fixed block 31 depends only on the rotational cooperation between the positioning protrusion 315 and the rotating bayonet 217, and does not depend on the cooperation between the arc top 313 of the fixed block 31 and the inner top wall 215 of the mounting groove. This embodiment is used to illustrate that the swing connection part R provided in this application has at least two implementation methods.

[0040] Compared with any of the aforementioned embodiments, this embodiment differs only in the connection structure between the rigid connecting frame 2 and the main spring piece 1. All other structural features can be adapted to this embodiment as needed. Further explanation will now focus on the connection structure where the difference exists: like Figures 10a to 10dThe contours of the first mounting hole 11b and the second mounting hole 211 match each other, forming a symmetrical closed contour. The major axis of the first mounting hole 11b is parallel to the length direction of the main spring piece 1, and the minor axis of the first mounting hole 11b is parallel to the width direction of the main spring piece 1. Along the two ends of the major axis of the first mounting hole 11b, an arc-shaped flared portion 112 with an opening gradually widening is provided from the outside to the inside. The two arc-shaped flared portions 112 are connected by two horizontal straight segments. The horizontal straight segments are parallel to the length direction of the main spring piece 1, and the wall surface 111a of the horizontal straight segments is defined as the abutment surface 111. The locking fastener 32 is... A locking portion 32b extends upward from the limiting block 311 of the fixing block 31. The locking portion 32b consists of an end 321 and a straight rod portion 322a from top to bottom. The end 321 is not round. The fixing block 31 is set in the mounting groove 21 so that the locking portion 32b passes through the second mounting hole 211 and the first mounting hole 11b from bottom to top. The straight rod portion 322a is a hexagonal prism, preferably designed with two adjacent sides transitioned by rounded chamfers. The two cylindrical surfaces 3221a of the straight rod portion 322a along the width direction of the fixing block 31 are parallel to the length direction (X-axis) of the fixing block 31. The two cylindrical surfaces 3221a are defined as limiting surfaces 3221. The length from the center line of the straight rod 322a to both ends of the limiting surface 3221 is greater than the shortest length from the center line of the straight rod 322a to the abutment surface 111. This allows the abutment surface 111 and the limiting surface 3221 to form a rotation limiting structure, thereby achieving switching damping in both forward and reverse switching of the locking part 32b from the assembled state to the locked state. By rotating the included angle between the rigid connecting frame 2 and the main spring plate 1, the locking part 32b can switch between the assembled state and the locked state. When the locking part 32b is in the assembled state... Both the end 321 and the straight rod 322 can pass through the first mounting hole 11b. Then, the locking part 32b is rotated to the locked state, so that the end 321 and the first mounting hole 11b have an overlapping area along the height direction, so that the blocking surface 111 and the limiting surface 3221 are in opposite positions, and the main spring piece 1 is constrained between the end 321 and the limiting part 311 along the height direction. One end of the locking part 32b is limited and connected to the main spring piece 1 along the height direction, and the other end is connected to the fixing block 31, thereby forming a predictable and stable moving space between the rigid connecting frame 2 and the main spring piece 1 along the height direction. It should be noted that the aforementioned rotation limiting structure can be designed by default, because once the two claws 22 of the rigid connecting frame 2 are inserted into the wiper blade 4 with two metal springs 41, the rigid connecting frame 2 will not rotate relative to the main spring 1 in the horizontal direction. However, in order to facilitate the assembly of the wiper blade 4, it is preferable to set the cooperation between the locking part 32b and the first mounting hole 211 as a rotation limiting structure.

[0041] With the above structure, the first mounting hole 11b and the second mounting hole 211 of the main spring piece 1 of this application adopt a symmetrical closed contour formed by the combination of the arc-shaped flared portion 112 and the horizontal straight line segment. Compared with the conventional first mounting hole and second mounting hole adopting a rectangular opening design (such as conventional 2), the openings of the first mounting hole 11b and the second mounting hole 211 of this application are significantly smaller than the conventional rectangular opening scheme, which can minimize the adverse effects on the strength of the main spring piece 1 and the rigid connecting frame 2 (especially the mounting groove 21 area). Meanwhile, due to the design of the arc-shaped flared part 112, when the locking part 32b is in the locked state, the arc-shaped flared part 112 forms interference with the displacement of the straight rod part 322a along the length direction of the main spring piece 1 in the area adjacent to the horizontal straight line segment (blocking surface 111), thereby limiting the forward and backward displacement of the straight rod part 322a along the length direction of the main spring piece 1, thus ensuring that the rigid connecting frame 2 is not prone to relative displacement with the main spring piece 1 along the length direction, and is not prone to causing the wiper 1000 to shake during the wiping process, affecting the wiping effect.

[0042] like Figures 11a to 11b It reveals another variant of the locking part 32b, whose main structure is not fundamentally different from the aforementioned embodiment. The only difference is that the straight rod part is replaced with an octagonal prism 322b, and the opening profile of the first mounting hole 11b is adaptively adjusted. The resulting technical means and effects are not fundamentally different from the straight rod part of the aforementioned hexagonal prism 322a, and will not be repeated here. Figure 11c The straight rod portion adopts an octagonal irregular-shaped prism 322c, which is actually a variant of the octagonal prism 322b. Specifically, a concave arc surface 32211 is provided on the non-limiting surface 3221a of the original octagonal prism 322c. This concave arc surface 32211 is preferably provided on two cylindrical surfaces adjacent to the limiting surface 3221a. In fact, the design of the straight rod portion 322 can adopt various schemes. It is preferred that the two limiting surfaces are arranged in parallel to facilitate quality inspection of dimensional accuracy during production.

[0043] like Figures 12a to 12bThe contours of the first mounting hole 11b and the second mounting hole 211 match each other, forming a symmetrical closed contour. The major axis of the first mounting hole 11b is parallel to the length direction of the main spring piece 1, and the minor axis of the first mounting hole 11b is parallel to the width direction of the main spring piece 1. Along the two ends of the major axis of the first mounting hole 11b, an arc-shaped flared portion 112 with an opening gradually widening is provided from the outside to the inside. The two arc-shaped flared portions 112 are connected by two opposing and inwardly protruding limiting protrusions. The wall surface 111b of the limiting protrusions... Defined as the abutment surface 111, the straight rod portion 322d has two sides along the width direction of the fixing block 31 respectively provided with limiting concave surfaces 3221b that match the wall surface 111b of the limiting protrusion. These limiting concave surfaces 3221b are defined as limiting surfaces 3221. The straight rod portion 322d has two sides along the length direction of the fixing block 31 respectively provided with yielding concave surfaces 3222 that give way to the wall surface 111b of the limiting protrusion. The rotation limiting structure is constructed by the abutment surface 111 and the limiting surface 3221. This embodiment reveals that the rotation limiting structure between the first mounting hole 11b and the straight rod portion 322 of the locking portion 32b is not limited to the limiting surface 3221 and the abutment surface 111 using a straight parallel limiting contact surface; an arc-shaped limiting contact surface can also be used.

[0044] like Figure 13 , 14 This application also discloses a design scheme for a fixture 3 that defaults to the support portion. Figure 13 It is revealed that rivet 32a is used as a locking fastener to achieve a limiting connection between the rigid connecting frame 2 and the main spring piece 1 along the height direction. Figure 14 The invention discloses a locking part 32a integrally formed with the fixing block 31 as a locking element to achieve a limiting connection between the rigid connecting frame 2 and the main spring piece 1 along the height direction. The most obvious difference from conventional adaptive wiper brackets is the addition of a pre-positioning structure Y between the fixing block 31 and the mounting groove 21 to allow the fixing block 31 to be embedded into the mounting groove 21. Figure 13 The positioning protrusions 314 protruding from both sides of the fixing block 31 and the positioning through holes 216 corresponding to the mounting groove 21, such as Figure 14 The two sides of the fixing block 21 have protruding positioning protrusions 315 and rotation slots 217 opened at corresponding positions of the mounting groove 21. Of course, there are not only the two positioning structures mentioned above. All the positioning structures described above can be applied to this embodiment. At the same time, it is preferred that the bottom of the fixing block 31 is designed without outward protrusions, such as the bottom of the fixing block 31 without a relief groove design, and the design of the height difference between the bottom of the fixing block 31 and the inner top wall of the locking part 22. The above structural design and the resulting technical effects can be referred to the above description without any additional supplement.

[0045] The above embodiments and illustrations are not intended to limit the product form and style of the present invention. Any appropriate changes and modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. An adaptive wiper bracket, comprising a main spring (1), N rigid connecting frames (2) and N retainers (3), wherein the main spring (1) has N first mounting holes (11), where N is a positive integer greater than or equal to 2; the rigid connecting frame (2) has an arched mounting groove (21) in the middle, and has claw portions (22) at both ends for connecting with wiper blades (4), the mounting groove (21) is open downwards, and has a second mounting hole (211) on its top wall, wherein each first mounting hole (11) and the second mounting hole (211) are positioned opposite each other; the retainer (3) comprises a fixing block (31) and a locking member (32), wherein a limiting portion (311) protrudes from the upper middle part of the fixing block (31), and the fixing block (31) is disposed in the mounting groove (21) and its limiting portion (311) is provided. The top of the mounting part (311) protrudes upward from the second mounting hole (211). A swing connection part (R) is arranged between the fixing block (31) and the mounting groove (21), so that the rigid connecting frame (2) can only swing up and down along the length direction of the main spring (1) along the swing trajectory preset by the swing connection part (R). One end of the locking fastener (32) passes through the first mounting hole (11) and forms a limiting connection with the main spring (1) in the height direction. The other end is connected to the fixing block (31), so that the top of the limiting part (311) of the fixing block (31) abuts against the bottom surface of the main spring (1). At this time, the fixing block (31) and the main spring (1) are locked in the height direction, ensuring that there is a preset movable gap between the main spring (1) and each rigid connecting frame (2) in the height direction. The front and rear parts of the fixing block (31) are further provided with a support part (312) to prevent the fixing block (31) from tilting up and down in the width direction relative to the main spring piece (1). The top wall of the mounting groove forms a hollow relief part (212) at the position relative to the support part (312), so that the top of the support part (312) protrudes upward from the relief part (212). The locking fastener (32) makes the support part (312) and the limiting part (311) abut against the bottom surface of the main spring piece (1).

2. The adaptive wiper bracket as described in claim 1, characterized in that: The vertical projection surface of the fixing block (31) is rectangular, and it can extend along the width direction to approach the two side walls (213) of the mounting groove. There are no protruding protrusions at the bottom of the fixing block (31). When the fixing block (31) is in the locked state, the bottom of the fixing block (31) is slightly higher than the inner top wall (221) of the claw part, and the height difference D between the two is less than 1mm.

3. The adaptive wiper bracket as described in claim 2, characterized in that: The height difference D is less than 0.5 mm.

4. The adaptive wiper bracket as described in any of the preceding claims, characterized in that: The vertical projection surface of the fixing block (31) is rectangular. The abutting support part (312) is provided with a limiting post (312a) protruding upward at both ends of one of the diagonals of the fixing block (31). The clearance part (212) of the top wall of the mounting groove is provided with a clearance hole (212a) corresponding to the position of the limiting post (312a), so that the top of the limiting post (312a) protrudes upward from the clearance hole (212a). There is a space between each clearance hole (212a) and the corresponding limiting post (312a) along the length direction of the fixing block (31).

5. The adaptive wiper bracket as described in claim 4, characterized in that: The abutment support (312) consists of a limiting post (312a) protruding upwards at both ends of the two diagonals of the fixing block (31).

6. The adaptive wiper bracket as described in any one of claims 1 to 3, characterized in that: The vertical projection surface of the fixing block (31) is rectangular, the abutting support (312) is a limiting strip (312b) protruding upward along the width direction of the fixing block (31), and the clearance part (212) of the top wall of the mounting groove is a clearance through groove opened at the position relative to the transverse strip.

7. The adaptive wiper bracket as described in any one of claims 4 to 6, characterized in that: The two side walls (213) of the mounting groove extend upwards to form a support wall (214) relative to the clearance hole (212a), which is used to abut against the support part (312) for limiting the movement, and the height of the support wall (214) cannot constrain the relative swing between the rigid connecting frame (2) and the main spring plate (1).

8. The adaptive wiper bracket as described in any of the preceding claims, characterized in that: The swing connection (R) has an upwardly protruding arc-shaped top (313) on the left and right sides of the fixed block (31). The highest position of the arc-shaped top (313) is lower than the top surface of the limiting part (311). The arc-shaped top (313) abuts against the inner top wall (215) of the mounting groove. A pre-positioning structure (Y) is also added between the fixed block (31) and the mounting groove (21) to realize that the fixed block (31) is embedded into the mounting groove (21).

9. The adaptive wiper bracket as described in claim 8, characterized in that: The prepositioning structure (Y) includes positioning protrusions (314) protruding from the left and right sides of the fixing block (31), and positioning through holes (216) formed on the two side walls (213) of the mounting groove at positions relative to the positioning protrusions (314). The positioning protrusions (314) extend at least partially into the positioning through holes (216) and interfere with each other along the height direction.

10. The adaptive wiper bracket as described in claim 9, characterized in that: The top of the positioning protrusion (314) has a guide surface (3141), and the lower part of the two side walls (213) of the mounting groove that overlap with the moving trajectory of the positioning protrusion (314) are bent outward to form a first fold (2131). The inner wall side of the first fold (2131) forms a first clearance slope (21311) to facilitate the upward sliding of the positioning protrusion (314).

11. The adaptive wiper bracket as described in claim 9, characterized in that: The upper middle part of the positioning protrusion (314) is provided with a triangular guide portion (3142). The inner contour of the positioning through hole (216) matches the outer contour of the positioning protrusion (314). The two side walls (213) of the mounting groove are also provided with a guide opening (2161) below the positioning through hole (216) to match the slope of the triangular guide portion (3142) of the positioning protrusion (314), so that the positioning protrusion (314) is nested into the positioning through hole (216) through the guide opening (2161).

12. The adaptive wiper bracket as described in claim 8, characterized in that: The pre-positioning structure (Y) includes positioning protrusions (314) protruding from the left and right sides of the fixing block (31), and the lower middle part of the two side walls (213) of the mounting groove, which are bent outward from top to bottom relative to the positioning protrusions (314) to form a pleated part constructed by the first fold (2131) and the second fold (2132). The top of the positioning protrusion (314) has a guide surface (3141), and the first fold (2131) and the second fold (2132) are bent outward from top to bottom to form a pleated part constructed by the first fold (2131) and the second fold (2132). A stop surface (2133) is formed at the junction of the two first folded edges (2131) and the two second folded edges (2132), respectively forming a first clearance slope (21311) and a second clearance slope (21321) to facilitate the upward sliding of the positioning protrusion (314). The stop surface (2133) and the bottom of the positioning protrusion (314) abut against each other to limit the movement of the fixing block (31) relative to the mounting groove (21).

13. The adaptive wiper bracket as described in claim 8, characterized in that: The prepositioning structure (Y) includes circular positioning protrusions (315) protruding from the left and right sides of the fixing block (31), and the two side walls (213) of the mounting groove form a downward-facing rotating latch (217) at a position relative to the positioning protrusions (315). The diameter of the positioning protrusions (315) is greater than the distance between the open ends of the rotating latch (217).

14. The adaptive wiper bracket as described in claim 13, characterized in that: The lower part of the positioning protrusion (315) is dematerialized to form a missing circle (3151), the missing circle (3151) is larger than 1 / 2 of the positioning protrusion (315) without material removal, so that the bottom surface of the missing circle (3151) is flush with the bottom surface of the fixing block (31).

15. The adaptive wiper bracket as described in claim 13, characterized in that: The positioning protrusion (315) is located on the lower part of both sides of the fixing block (31), and its part extends to the lower part of both sides, so that the positioning protrusion (315) is suspended below the fixing block (31). The positioning protrusion (315) located in the suspended area is defined as the suspended part (3152). A reinforcing block (3154) is added between the suspended part (3152) and the bottom surface of the fixing block (31).

16. The adaptive wiper bracket as described in any one of claims 1 to 7, characterized in that: The swing connection (R) includes positioning protrusions (315) protruding from the left and right sides of the fixed block (31). The upper part of the outer contour of the positioning protrusion (315) forms an arc mating surface, and the two side walls (213) of the mounting groove form a downward-facing rotating latch (217) at a position relative to the positioning protrusion (315). The diameter of the arc mating surface of the positioning protrusion (315) is greater than the distance between the opening ends of the rotating latch (217).

17. The adaptive wiper bracket as described in claim 13, 15, or 16, characterized in that: The positioning protrusion (315) has an outwardly protruding cap edge (3153), which further constrains the relative displacement between the fixing block (31) and the side wall (213) of the mounting groove along the width direction of the fixing block (31).

18. The adaptive wiper bracket as described in any of the preceding claims, characterized in that: The first mounting hole (11a) is a circular through hole. The center of the limiting part (311) of the fixing block (31) has a limiting through hole (3111) that runs vertically through it. The locking fastener (32) is a rivet (32a). The rivet (32a) passes through the first mounting hole (11a) and the limiting through hole (3111). The rivet (32a) is riveted to the main spring piece (1) along the height direction by riveting, and the other end is riveted to the fixing block (31).

19. The adaptive wiper bracket as described in any one of claims 1 to 17, characterized in that: The first mounting hole (11b) and the second mounting hole (211) are non-circular irregular through holes; the locking fastener (32) is a locking part (32b) extending upward from the limiting block (311) of the fixing block (31). The locking part (32b) consists of an end (321) and a straight rod (322) from top to bottom. The end (321) is non-circular. The fixing block (31) is set in the mounting groove (21) so that its locking part (32b) passes through the second mounting hole (211) and the first mounting hole (11b) from bottom to top. By rotating the locking fastener... The included angle between the sex connector (2) and the main spring piece (1) allows the locking part (32b) to switch between the assembled state and the locked state. When the locking part (32b) is in the assembled state, both the end (321) and the straight rod (322) can pass through the first mounting hole (11b). Then, the locking part (32b) is rotated to the locked state, so that the end (321) and the first mounting hole (11b) have an overlapping area along the height direction, so that the main spring piece (1) is constrained between the end (321) and the limiting part (311) along the height direction.

20. The adaptive wiper bracket as described in claim 19, characterized in that: A rotation limiting structure is formed between the straight rod portion (322) and the first mounting hole (11b), so that the locking portion (32b) forms switching damping in both forward and reverse switching from the assembled state to the locked state.

21. The adaptive wiper bracket as described in claim 20, characterized in that: The contours of the first mounting hole (11b) and the second mounting hole (211) match each other, forming a symmetrical closed contour. The major axis of the first mounting hole (11b) is parallel to the length direction of the main spring piece (1), and the minor axis of the first mounting hole (11b) is parallel to the width direction of the main spring piece (1). Along the two ends of the major axis of the first mounting hole (11b), an arc-shaped flared portion (112) with a gradually opening portion is provided from the outside to the inside. The two arc-shaped flared portions (112) are connected by two horizontal straight segments, which are parallel to the length direction of the main spring piece (1). The wall surface (111a) of the straight section is defined as the abutment surface (111); the straight rod part (322) forms vertical planes (3221a) on both sides along the width direction of the fixed block (31), the vertical planes (3221a) are defined as the limiting surface (3221), and the length from the center line of the straight rod part (322) to both ends of the limiting surface (3221) is greater than the shortest length from the center line of the straight rod part (322) to the abutment surface (111). The rotation limiting structure is constructed by the abutment surface (111) and the limiting surface (3221).

22. The adaptive wiper bracket as described in claim 21, characterized in that: The straight rod (322) is a hexagonal prism (322a), an octagonal prism (322b), or an octagonal irregular prism (322c), and the two cylindrical surfaces of the straight rod (322) along the width direction of the fixing block (31) are parallel to the length direction of the fixing block (31), so that the two cylindrical surfaces of the straight rod (322) along the width direction of the fixing block (31) serve as the limiting surface (3221).

23. The adaptive wiper bracket as described in claim 20, characterized in that: The contours of the first mounting hole (11b) and the second mounting hole (211) match each other and have symmetrical closed contours. The major axis of the first mounting hole (11b) is parallel to the length direction of the main spring (1), and the minor axis of the first mounting hole (11b) is parallel to the width direction of the main spring (1). The first mounting hole (11b) has an arc-shaped flared portion (112) with an opening gradually widening from the outside to the inside at both ends of the major axis. The two arc-shaped flared portions (112) are connected by two opposing and inwardly protruding limiting protrusions. The wall surface (111b) of the limiting protrusion is defined as the abutment surface. (111) The straight rod portion (322 / 322d) is provided with limiting concave surfaces (3221b) that match the wall surface (111b) of the limiting protrusion on both sides along the width direction of the fixing block (31). The limiting concave surface (3221b) is defined as the limiting surface (3221). The straight rod portion (322 / 322d) is provided with yielding concave surfaces (3222) that give way to the wall surface (111b) of the limiting protrusion on both sides along the length direction of the fixing block (31). The rotation limiting structure is constructed by the abutting surface (111) and the limiting surface (3221).

24. A windshield wiper, characterized in that, It includes at least the adaptive wiper bracket as described in any one of claims 1 to 23.

Images