A wiper connector adapted to a U-shaped wiper arm and a wiper thereof

Abstract

The present invention proposes a wiper connector, which includes a wiper joint, which includes two longitudinal vertical side edges and a fixing surface located between the two side edges, at least one side edge of the two side edges of the wiper joint at the front end portion located on the fixing surface has a flexible bending portion, and the flexible bending portion is easy to bend and deform under the action of external force; it also includes an additional component, which includes a base and a cover body, when the cover body and the base are in a closed state, the cover body has at least one mating surface that abuts against the flexible bending portion, and drives the flexible bending portion to bend and deform and tightly press against the outer side of the hook-shaped end of the U-shaped wiper arm, so as to lock the wiper joint with the U-shaped wiper arm; the present invention also provides a wiper made using the above-mentioned wiper connector.

Description

Technical Field

[0001] The invention relates to a windshield wiper, in particular to a windshield wiper connector capable of adapting to a U-shaped wiper arm and a windshield wiper manufactured with the windshield wiper connector. Background Art

[0002] The mainstream wipers on the market that are suitable for U-shaped wiper arms are of the following types:

[0003] The first type: Figure 1 , 2 As shown, the patent document with patent publication number CN1263835A discloses a wiper joint 10a, at the front end of which elastic clamping points 5a and 5c are added. When the U-shaped wiper arm 100a is installed, the front end of the U-shaped wiper arm 100a is nested in the elastic clamping points 5a and 5c of the wiper joint 10a, and the front end of the wiper joint 10a is tightly matched with the wiper rod body 12a to prevent elastic deformation of the elastic clamping points 5a and 5c, thereby ensuring that the U-shaped wiper arm is not easily detached from the wiper joint 10a. This type of wiper rod body 12a is made of metal, and its production cost is high; and when the vehicle is cleaning the windshield, the U-shaped wiper arm 100a needs to be lifted outward and kept suspended from the windshield. At this time, once the wiper joint 10a swings a certain angle relative to the wiper rod body 12a, the wiper joint 10a is freed from the constraints on both sides of the wiper rod body 12a, and the U-shaped wiper arm 100a is easily detached from the wiper joint 10a.

[0004] In response to the above-mentioned defects, Valeo and Bosch, the leading companies in the field of windshield wiper auto parts, have developed their own different wiper connectors respectively. The same inventive concept of both companies is to add external components to the elastic card point of the wiper connector to prevent its elastic deformation.

[0005] The second type: Figure 3 , 4As shown, the patent document with patent number 200610160549.2 discloses that the front end of its wiper joint 42b is provided with an elastic clamping point 60b, and the front end portion 38b of the U-shaped wiper arm 22b is nested in the elastic clamping point 60b, and at the same time, a safety buckle 74b needs to be pivotally connected to a side wall of the front end portion of the wiper joint 42b. When the safety buckle 74b and the front end portion of the wiper joint 42b are engaged with each other, the elastic clamping point 60b of the wiper joint 42b can be prevented from being deformed, thereby preventing the U-shaped wiper arm 22b from detaching from the wiper joint 42b; when the safety buckle 74b is opened, the U-shaped wiper arm 22b needs to open the elastic clamping point 60b at the front end of the wiper joint 42b before it can detach from the wiper joint 42b. With this design, the safety tower buckle 74b is fixed on one side. In actual use, once the safety tower buckle 74b is subjected to a large external force, it is easy to detach from the fastening point with the wiper connector 42b, and cannot achieve the original design intention of preventing the elastic card point 60b of the wiper connector 42b from elastic deformation. Therefore, this design of wiper connector 42b and wiper are seldom circulated in the market.

[0006] The third type: Figure 5 As shown, the patent No. 200580012836.2 discloses that the front end of the wiper joint 82c also has a positioning cross piece 76c, through which the front end of the U-shaped wiper arm 10c is embedded in the wiper joint 82c. In order to prevent the U-shaped wiper arm 10c from detaching from the wiper joint 82c, a flip cover 50c is added to the rear end of the wiper joint 82c, and the elastic deformation of the positioning cross piece 76c is prevented by the snap fit of the flip cover 50c and the wiper joint 82c. At the same time, the scheme also provides a scheme in which the positioning cross piece 76C can be omitted, that is, a limit piece 64C is provided on the inner side surface of the flip cover 50C, referring to the 0007th paragraph of the specification, the limit piece 64C can directly act on the outer contour of the hook-shaped end of the U-shaped wiper arm 10c, the limit piece 64C is rigid and has no elasticity, and the U-shaped wiper arm 10c is prevented from detaching from the wiper joint 82c by the limit piece 64c. With this design, the flip cover 50c is not easily separated from the covering cover 26c because the positioning pins 62c on both sides of the front end engage with the positioning opening 40c at the front end of the covering cover 26c. At this time, if the flip cover 50c is used to prevent the positioning cross piece 76c from elastically deforming outward, it can ensure that the U-shaped wiper arm 10c is not easily separated from the wiper joint 82c; if the limit piece 64c of the flip cover 50c is pressed against the outer contour of the hook-shaped end of the U-shaped wiper arm 10c, higher requirements are placed on the position accuracy of the limit piece 64c and the dimensional accuracy of the U-shaped wiper arm 10c.

[0007] To summarize, the wiper connector currently available on the market that is compatible with the U-shaped wiper arm, if it has an elastic card point or a positioning cross piece for preventing the U-shaped wiper arm from detaching outward, the side wall of the wiper connector itself needs to have a certain strength, and at the same time, additional components are added to the outside of the elastic card point or the positioning cross piece of the wiper connector to further prevent the elastic deformation of the side wall. The above structure determines that there are higher requirements for the matching accuracy between the wiper connector and the U-shaped wiper arm, that is, as long as there is an error in manufacturing accuracy in any of them, it will affect the matching between the wiper connector and the U-shaped wiper arm, because the position of the elastic card point of the wiper connector is fixed, if it cannot be exactly stuck in the hook-shaped end of the U-shaped wiper arm, it will cause the U-shaped wiper arm to shake back and forth relative to the wiper connector; or due to the error in manufacturing accuracy, the width between the two side walls of the wiper connector is too wide. Or too narrow, both will result in that when assembling with the wiper arm, if it is too narrow, the wiper arm cannot be installed with the wiper joint, and if it is too wide, the wiper arm and the wiper joint are prone to left and right shaking after installation; similarly, the above problems will also occur when the wiper arm is too wide or too narrow due to processing errors; when the wiper joint adopts the technical solution of providing a limit piece on the flip cover of the covering cover, since the limit piece is also fixed at a fixed position on the inner wall of the flip cover, it is also unable to overcome the above problems caused by the error in manufacturing accuracy, that is, the common technical problem existing in the above technical solutions is: due to the error in processing accuracy in the manufacturing process of the wiper joint or the wiper arm, the wiper joint either cannot be installed when connected to the wiper arm, or once installed, the wiper joint and the wiper arm are prone to left and right shaking, which ultimately affects the wiping effect of the wiper. Summary of the invention

[0008] The present invention provides a wiper connector which can be used to achieve stable installation between a U-shaped wiper arm or a wiper joint even when the two have a large manufacturing precision error.

[0009] The second objective of the present invention is to provide a wiper manufactured using the wiper connector.

[0010] To achieve the first objective of the present invention, the present invention proposes a wiper connector, which includes a wiper joint, the wiper joint includes two longitudinal vertical side edges and a fixing surface located between the two side edges, the fixing surface is used to embed the hook-shaped end of the U-shaped wiper arm thereon, and at the same time, the two side edges form a hinged connection portion, and at least one side of the two side edges of the wiper joint has a flexible bending portion at the front end portion located on the fixing surface, and the flexible bending portion is easy to bend and deform under the action of external force; it also includes an additional component, which includes a base and a cover body, the base is used to be fixed to the wiper bracket, when the cover body and the base are in a closed state, the cover body has at least one mating surface that abuts against the flexible bending portion, and drives the flexible bending portion to bend and deform and tightly press against the outer side of the hook-shaped end of the U-shaped wiper arm, which is used to lock the wiper joint with the U-shaped wiper arm; when the cover body and the base are in an open state, the cover body will not apply a force to the flexible bending portion to produce bending and deformation, so that the U-shaped wiper arm is easy to detach from the wiper joint.

[0011] Furthermore, both side edges of the wiper connector have flexible bending portions at the front end portions located on the fixed surface. When the cover body and the base are in a closed state, the cover body has at least two mating surfaces that respectively abut against the flexible bending portions, and drive the flexible bending portions to bend and deform inward and abut against the outer side of the hook-shaped end portion of the U-shaped wiper arm. At this time, the minimum spacing between the two flexible bending portions is less than the width of the U-shaped wiper arm, further limiting the detachment of the U-shaped wiper arm from the wiper connector; when the cover body and the base are in an open state, the cover body will not apply a force to the flexible bending portion to cause bending and deformation, and the wiper connector detaches from the U-shaped wiper arm.

[0012] By adopting the above structure, a common technical prejudice in the field of wiper joints is overcome, that is, the two side edges of the wiper joint generally need to have a certain hardness, strength and the property of not being easy to be bent. It is creatively proposed to form a flexible bending portion in the corresponding area of ​​at least one side edge of the wiper joint, and the flexible bending portion abuts against the hook-shaped end of the U-shaped wiper arm to achieve a stable connection between the U-shaped wiper arm and the wiper joint. This technical solution well solves the problem that even if there is an error in the processing and manufacturing accuracy of the wiper joint or the U-shaped wiper arm, the stable connection between the two can be ensured by adjusting the abutment position between the flexible bending portion of the wiper joint and the hook-shaped end of the U-shaped wiper arm.

[0013] Preferably, there is no card point or stop edge on the inner wall of the flexible bending portion of the wiper connector. This avoids the existence of card points or stop edges, which may cause interference between the card points and the wiper arm when the wiper connector and the wiper arm are nested and connected due to the manufacturing accuracy of the wiper arm or the accuracy errors in the positions of the card points or stop edges, resulting in poor assembly. It also makes it easier for the wiper arm to slide in through the flexible bending portions on both sides of the wiper connector and be embedded in the fixed surface.

[0014] The side of the wiper joint has at least two different bending strengths, and the bending strength of the flexible bending portion at the front end of the side is less than the bending strength of the rest of the side. For the convenience of processing and manufacturing, the wiper joint is injection molded with the same material, and the thickness of the flexible bending portion at the front end of the side is less than the thickness of the rest of the side. In this way, the flexible bending portions at the front end of the two sides are ensured to be used for elastic bending and deformation, and the sides located above the fixed portion are used to constrain the two sides of the U-shaped wiper arm to prevent the U-shaped wiper arm from moving left and right.

[0015] According to the inventive concept of the present invention, the following different embodiments are provided for its additional components. Through the cooperation between different bases and the cover body, the side wall of the cover body can drive the flexible bending part of the wiper connector to bend and deform inward, thereby achieving a stable connection between the wiper connector and the U-shaped wiper arm.

[0016] The first embodiment of the additional component, the additional component is a first base and a first cover body, the first base is composed of at least two side walls, the inner cavity of which is hollow, and the two side walls are used to be fixed on the wiper bracket; the first cover body is composed of a top wall and two side walls, and the top wall has a hollow portion; the rear ends of the two side walls of the first cover body and the inner ends of the rear ends of the two side walls of the first base are respectively provided with mutually matching pivot connection parts X, and the front ends of the two side walls of the first cover body and the front ends of the two side walls of the first base are respectively provided with mutually fixed locking connection parts Y; the first cover body takes the pivot connection part X as the rotation fulcrum, rotates along the length direction of the first base, and is finally fixed to the first base through the locking connection part Y; when the first cover body and the first base are in a closed state, the two side walls of the first cover body will drive the flexible bending part of the wiper joint to bend and deform inward.

[0017] The second embodiment of the additional component, the additional component includes a second base and a second cover body, the second base is composed of at least two parallel and spaced side walls, the wiper connector is arranged between the two side walls, a swivel support shaft is transversely arranged at the front end of the two side walls, the inner ends of the two side walls have positioning parts for locking with the second cover body, and the second base is used to be fixed on the wiper bracket; the second cover body is located at the front end of the second base, the front end of the second cover body is hinged on the swivel support shaft of the second base, and the rear end thereof has at least side walls for driving the flexible bending part of the wiper connector to deform inwardly, and the two side walls have clamping parts, when the second cover body and the second base are in a closed state, the clamping part of the second cover body and the positioning parts of the two side walls of the second base are snap-fitted with each other to ensure that the second cover body is firmly connected to the second base, and at the same time, the side walls of the second cover body drive the flexible bending part of the wiper connector to deform inwardly.

[0018] The third embodiment of the additional component, the additional component comprises a fourth base and a fourth cover body, the fourth base is used to be fixed on the wiper bracket, and its inner cavity is hollow, the wiper connector is arranged in the inner cavity, and a plurality of clamping parts are provided on the two side walls of the fourth base; the lower ends of the two side walls of the fourth cover body are provided with a plurality of clamping parts opposite to the clamping parts of the fourth base, and when the fourth cover body and the fourth base are clamped and fixedly connected with each other, the side walls of the fourth cover body drive the flexible bending part of the wiper connector to deform inward.

[0019] In order to ensure that the two side walls of the first cover body, the second cover body and the fourth cover body have sufficient strength, transverse reinforcing ribs are respectively provided at the inner ends of the two side walls of each cover body.

[0020] In order to enable the areas corresponding to the two side walls of the first cover body, the second cover body and the fourth cover body to better abut and cooperate with the flexible bending part of the wiper connector, a number of ridges are respectively provided at the inner ends of the two side walls of each cover body relative to the flexible bending part of the wiper connector.

[0021] It should also be noted that the connecting base can be fixed in the inner cavity of each base through integral injection molding with the first base, the second base and the fourth base.

[0022] In order to achieve the second invention purpose of the present invention, the present invention also discloses a windshield wiper, including a windshield wiper main structure and a windshield wiper rubber strip, the windshield wiper main structure at least includes a windshield wiper bracket and a connecting base, the windshield wiper bracket is fixed with a windshield wiper rubber strip, the connecting base is anchored on the windshield wiper bracket, the connecting base is provided with a hinged mating part, and it also includes any type of windshield wiper connector mentioned above, the windshield wiper connector in the windshield wiper connector is hinged with the connecting base to ensure the connection between the U-shaped wiper arm and the windshield wiper main structure. With this type of windshield wiper, its connecting base and base are separated from each other.

[0023] The present invention also discloses another kind of wiper, which is different from the aforementioned wiper in that its connecting base and the base are integrally injection molded, that is, the connecting base is not directly anchored to the wiper bracket, but is indirectly fixed to the wiper bracket through the base. Other structural features are not significantly different from the aforementioned wiper structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 — Figure 2 A schematic diagram of the connection between the first conventional wiper joint and the U-shaped wiper arm;

[0025] Figure 3 — Figure 4 A schematic diagram of the connection between the second conventional wiper joint and the U-shaped wiper arm;

[0026] Figure 5A schematic diagram of the connection between the third conventional wiper joint and the U-shaped wiper arm;

[0027] Figure 6 It is an exploded schematic diagram of the first wiper connector of the present invention;

[0028] Figure 7 is a three-dimensional diagram of the first cover of the present invention;

[0029] Figure 8 It is a schematic diagram of the first wiper connector and the wiper main body mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the U-shaped scraper arm being embedded in the wiper joint when the first cover body of the present invention is not engaged with the first base;

[0031] Figure 10-1 It is a schematic diagram of the U-shaped scraper arm that meets the processing and manufacturing accuracy being embedded in the wiper joint when the first cover and the first base are buckled with each other in the present invention;

[0032] Figure 10-2 It is a schematic diagram of the U-shaped scraper arm with manufacturing errors being embedded in the wiper joint when the first cover and the first base are buckled together in the present invention;

[0033] Fig.11 is a schematic diagram of a wiper made of the first wiper connector;

[0034] Fig.12 is an exploded schematic diagram of a second wiper connector of the present invention;

[0035] Fig.13 is a three-dimensional diagram of the second cover of the present invention;

[0036] Fig.14 It is a schematic diagram of the U-shaped scraper arm being embedded in the wiper joint when the second cover body of the present invention is not interlocked with the second base;

[0037] Fig.15 It is a schematic diagram of the U-shaped scraper arm being embedded in the wiper joint when the second cover and the second base are buckled with each other in the present invention;

[0038] Fig.16 is a schematic diagram of a wiper made of the second wiper connector;

[0039] Fig.17 is an exploded schematic diagram of a third type of wiper connector of the present invention;

[0040] Fig.18 is a schematic diagram of a wiper made of the third type of wiper connector;

[0041] Fig.19 It is a schematic diagram of an exploded view of a fourth wiper connector of the present invention. DETAILED DESCRIPTION

[0042] like Figure 6 The present invention mainly discloses a wiper connector 3a, 3b, 3c, 3d that can be adapted to a U-shaped wiper arm 1, wherein the front end of the U-shaped wiper arm 1 has a hook-shaped end 11, and the rear end is used to be connected to a motor that drives the wiper arm 1 to swing (not shown).

[0043] The wiper connector 3a, 3b, 3c, 3d mainly includes a wiper joint 31 and additional components 4a, 4b, 4c, 4d. The wiper joint 31 is made of plastic material, including two longitudinal vertical side edges 311 and fixed surfaces 312, 313 located between the two side edges 311. At the same time, the two side edges 311 form a hinged connection part 314. The embodiment of the hinged connection part 314 of the present invention is a hinge hole 314. At least one side edge 311 of the two side edges 311 of the wiper joint 31 has a flexible bending part 315 at the front end portion located at the fixed surfaces 312, 313. The flexible bending portion 315 has a certain flexibility to ensure that the flexible bending portion 315 is easy to bend and deform under the action of external force, and the flexible bending portion 315 is not easy to break when it is repeatedly bent and deformed. Both side edges 311 of the wiper joint 31 in this specific embodiment have flexible bending portions 315. At the same time, in order to achieve different hardness in two different areas of the same side edge 311, one area is located at the front end of the fixed surface, and the other area is located at the middle and rear end of the fixed surface. For the convenience of processing and manufacturing, the thickness of the flexible bending portion 315 at the front end of the side edge 311 is generally less than the thickness of the other parts of the side edge 311. Of course, in the future, it will not Excluding the maturity of 3D printing technology, the wiper connector 31 can be made by mixing materials of different hardness at low cost. In short, the technical feature that distinguishes the wiper connector 31 from the traditional wiper connector is the presence of a flexible bending portion 315 that is easier to elastically deform, and the flexible bending portion 315 is not easy to break even when repeatedly bent and deformed. In contrast, the side of the traditional wiper connector is relatively hard and not easy to elastically deform. Once a sufficiently large external force is applied to cause it to deform, the side is easy to break. At the same time, in order to make the hook-shaped end 11 of the U-shaped wiper arm 1 better embedded in the fixed surfaces 312 and 313, it is preferred that the inner wall of the flexible bending portion 315 of the wiper connector 31 is not provided with a card point or a stop edge.

[0044] The wiper joint 31 described above is adopted, and different additional components 4a, 4b, 4c, 4d are used, so that different wiper connectors 3a, 3b, 3c, 3d are provided.

[0045] First embodiment:

[0046] like Figures 6 to 10As shown, the present invention discloses a first wiper connector 3a, wherein the additional component 4a is a first base 41a and a first cover 42a, wherein the first base 41a is at least composed of two side walls 411a, and its inner cavity is hollow, wherein the bottom of the first base 41a is mounted on the wiper bracket 21, and the connecting base 22 is built into the inner cavity of the first base 41a, and the front ends of the two side walls 411a of the first base 41a have two rectangular extension pieces 412a, and a positioning hole 4121a is provided on the extension piece 412a, and the positioning hole 442a constitutes one of the components of the locking connection part Y between the first base 41a and the first cover 42a, and in order to increase the strength of the two side walls 411a, the inner cavity of the two side walls 411a is provided with a positioning hole 4121a. A plurality of reinforcing ribs 414a are added to the wall; the inner wall at the rear end of the two side walls 411a of the first base 41a has a pivot boss 413a, and the pivot boss 413a constitutes one of the components of the pivot connection portion X between the first base 41a and the first cover body 42a. Generally, the boss 413a can be a circular boss, but the present embodiment optimizes the design of the pivot boss 413a, specifically, the pivot boss 413a is n-shaped, which is composed of an arc-shaped upper top surface 4131a and two vertical side surfaces 4132a, and the bottom of the two side surfaces 4132 also has a lower top surface 4133a with the same arc as the upper top surface 4131a, that is, the arcs of the upper top surface 4131a and the lower top surface 4133a have the same center and radius.The first cover body 42a is composed of a top wall 421a and two side walls 422a, wherein the top wall 421a has a hollow portion 4211a, and the rear ends of the two side walls 422a of the first cover body 42a are provided with a pivot hole 423a at a position of the pivoting protrusion 413a relative to the rear ends of the two side walls 411a of the first base 41a. The pivot hole 423a constitutes one of the components of the pivot connection portion X between the first base 41a and the first cover body 42a. 3a cooperates with the pivoting protrusion 413a, so that the first cover body 42a can rotate around the pivoting protrusion 413a; it should be noted that the conventional pivot hole generally has a C-shaped pivot hole with an open end (not shown in the figure), and the circular pivoting protrusion matched therewith forcibly squeezes the open end of the C-shaped pivot hole, driving its open end to elastically deform to both sides, thereby realizing the corresponding pivotal cooperation between the pivoting protrusion and the pivot hole, but the present invention is optimized for the pivot hole, specifically the pivot hole 423a The C-shaped open end has a connecting piece 4231a, which extends outwardly along the insertion direction, and the two sides of the connecting piece 4231a form stop edges 4232a respectively, and the connecting piece 4231a and the stop edges 4232a on both sides are combined to form an insertion guide groove 424a, and the minimum spacing of the stop edges 4232a on both sides is greater than the distance between the two side surfaces 4132a of the optimized pivot boss 413a, so that the pivot hole 423a is convenient for being embedded in the pivot boss 413a and freely rotating relative to it. Once the pivot hole 423a forms a certain angle with the pivot boss 413a and the insertion direction, the pivot boss 413a cannot be moved from the pivot hole 423a. The opening end is pulled out; at the same time, the inner ends of the two side walls 422a at the front end of the first cover body 42a are respectively provided with positioning bosses 441a relative to the two positioning holes 4121a at the front end of the first base 41a. The positioning bosses 441a constitute one of the components of the locking connection part Y between the first base 41a and the first cover body 42a. By the locking cooperation between the positioning bosses 441a and the positioning holes 4121a, the first cover body 42a and the first base 41a are in a fixed and stable connection state when they are mutually buckled and in a closed state. Of course, the locking connection method between the first cover body 42a and the first base 41a can be achieved by many other methods, which are not listed here one by one.

[0047] The working principle of the wiper connector 3a is as follows: the first base 41a is fixed on the wiper bracket 21, and a connecting base 22 is provided in its inner cavity. The connecting base 22 is provided with a rotating shaft 221, and the rotating shaft 221 is used as one of the specific expressions of the hinged matching part. At the same time, the connecting base 22 can be fixed on the wiper bracket 21 separately, or can also be integrally formed with the first base 41a by injection molding; the wiper connector 31 is swingably set on the rotating shaft 221 of the connecting base 22 through the hinge hole 314; the first cover body 42a is inserted into the pivoting protrusion 413a of the first base 41a through the pivoting holes 423a at the rear ends of the two side edges 422a and can rotate around it, such as Fig. 9As shown, a U-shaped scraper arm 1 passes through the hollow portion 4211a of the top wall 421a of the first cover body 42a and has its hook-shaped end portion 11 embedded in the fixed surfaces 312, 313 of the wiper joint 31. Since the inner walls of the two side edges 311 of the wiper joint 31, especially the inner walls of the insertion section of the U-shaped scraper arm 1 (this area is the flexible bending portion 315 of the wiper joint 31) are not provided with any card points or blocking edges for preventing the U-shaped scraper arm 1 from sliding in or out, the U-shaped scraper arm 1 can be easily embedded in the fixed surfaces 312, 313 of the wiper joint 31. Then, when the first cover body 42a and the first base 41a are closed, the fixed surfaces 312, 313 of the first cover body 42a are closed. The positioning boss 441a and the positioning hole 4121a of the first base 41a are locked and engaged with each other, and the first base 41a and the first cover body 42a are in a closed state. The two side edges 422a of the first cover body 42a are abutted against the inner wall of the flexible bending portion 315 of the wiper joint 31 and the flexible bending portion 315 of the wiper joint 31, and the flexible bending portion 315 is driven to bend and deform inward. The deformed flexible bending portion 315 is tightly pressed against the outer side of the hook-shaped end 11 of the U-shaped wiper arm 1. The more specific abutting position is located at the two side edges A of the hook-shaped end 11 and the adjacent area B1 of the outer arc surface B of the hook-shaped end 11 facing the two side edges A. At this time, the minimum spacing between the two flexible bending portions 315 is less than the width of the U-shaped wiper arm 1, further limiting the detachment of the U-shaped wiper arm 1 from the wiper connector 3a. Of course, when driving the flexible bending portion 315 of the wiper connector 31 to deform, the two side edges 422a of the first cover 42a can be directly abutted against the flexible bending portion 315, or a convex ridge 4221a can be added to the inner wall of the two side edges 422a of the first cover 42a relative to the flexible bending portion 315, so that the convex ridge 4221a and the flexible bending portion 315 can be abutted against each other. In order to further increase the strength of the two side edges 422a of the first cover 42a, A transverse reinforcing rib 4222a is added between the side edges 422a; at the same time, a clamping point 3151 is added to the front end of the flexible bending portion 315, and the clamping point 3151a can be engaged with the convex ridge 4221a on the first cover body 42a, further limiting the flexible bending portion 315 from unfolding to both sides, preventing the U-shaped wiper arm 1 from detaching from the wiper joint 31; when the first cover body 42a is opened, when the first cover body 42a and the first base 41a are in an open state, the two side edges 422a of the first cover body 42a will not exert a force on the flexible bending portion 315 to produce bending deformation, and the U-shaped wiper arm 1 can be very conveniently detached from the wiper joint 31.

[0048] It is necessary to explain why the above-mentioned wiper joint 31 can ensure that the U-shaped wiper arm 1 or the wiper joint 31 can be firmly connected even if there is an error in the manufacturing accuracy. Figure 10-1FIG. 1 is an assembly state diagram of the U-shaped wiper arm 1 or the wiper joint 31 under normal manufacturing accuracy. At this time, it is assumed that the manufacturing accuracy of the U-shaped wiper arm 1 has an error, such as Figure 10-2 The hook-shaped end 11' of the U-shaped wiper arm 1 to be installed is 2mm longer than the standard. When the two side walls 422a of the first cover body 42a drive the flexible bending portion 315 of the wiper connector 31 to bend and deform, since the hook-shaped end 11' extends forward for a distance, the openings of the two flexible bending portions 315 will be correspondingly increased, which can still achieve a stable connection between the wiper connector 31 and the U-shaped wiper arm 1 with errors in manufacturing precision.

[0049] like Fig.11 As shown, the present invention also discloses a wiper 100a using the above-mentioned wiper connector 3a, which also includes a wiper main structure 2 and a wiper rubber strip 23. The wiper main structure 2 at least includes a wiper bracket 21 and a connecting base 22. The wiper bracket 21 is fixed with a wiper rubber strip 23. The connecting base 22 is anchored on the wiper bracket 21. The connecting base 22 is provided with a hinged matching portion 221, which is a rotating shaft 221 in this embodiment. The wiper connector 31 is hinged with the rotating shaft 221 of the connecting base 22 through the hinge holes 314 on the two side edges 311, so that the wiper connector 31 It is swingably arranged on the connecting base 22; the bottom of the first base 41a is fixed on the wiper bracket 21, and the first cover body 42a and the first base 41a are pivotally connected to each other via the pivot connection part X at the rear end. When the first cover body 42a and the locking connection part Y at the front end of the first base 41a are engaged with each other, the accommodating cavity formed between the first cover body 42a and the first base 41a will house the wiper connector 31 and its connecting base 22 in the accommodating cavity. The U-shaped wiper arm 1 is fixedly connected to the wiper 100a by the fixed connection method with the wiper connector 3a described above, which will not be repeated here. It should be noted that the connecting base 22 is not necessarily a separate component fixed on the wiper bracket 21, and can also be integrally formed with the first base 41a by injection molding.

[0050] Second embodiment:

[0051] like Figures 12 to 15As shown, the present invention discloses a second wiper connector 3b, wherein the additional component 4b includes a second base 41b and a second cover 42b, and the connection method between the second cover 42b and the second base 41b is different from that of the first embodiment, wherein the second cover 42b is arranged at the front end of the second base 41b, specifically, the second base 41b is composed of at least two side walls 411b that are parallel to each other and spaced apart, and the wiper connector 31 is arranged between the two side walls 411b, and a swivel support shaft 412b is transversely arranged at the front end of the two side walls 411b, and the middle inner end of the side wall 411b has a swivel support shaft 412b for swivel with the second wiper connector 31. The second cover body 42b is locked with a positioning portion 413b, which is a convex point; the second cover body 42b includes a top plate 423b, and a hinge groove 424b is provided at the front end of the top plate 423b, which can be rotatably placed on the rotary support shaft 412b of the second base 41b through the hinge groove 424b, and two side walls 421b are respectively downwardly provided on both sides of the rear end of the top plate 423b, and the two side walls 421b have a clamping portion 422b on the side away from the hinge groove 424b, and the clamping portion 422b has a hook portion, which is locked with the positioning portion 413b of the second base 41b through the hook portion.

[0052] The working principle of the wiper connector 3b is as follows: the second base 41b is fixed on the wiper bracket 21, and the connecting base 22 and the wiper connector 31 are both arranged in the two side walls 411b of the second base 41b. When the second cover body 42b and the second base 41b are engaged with each other and are in a closed state, the two side walls 421b of the second cover body 42b drive the flexible bending portion 315 of the wiper connector 31 to deform inwardly. When the second cover body 42b and the second base 41b are unlocked from each other and are in an open state, the second cover body 42b will not apply a force to the flexible bending portion 315 to produce bending deformation, thereby facilitating the U-shaped wiper arm 1 to detach from the wiper connector 31. Similarly, a plurality of ridges 4211b are provided at the inner ends of the two side walls 421b of the second cover body 42b corresponding to the positions of the flexible bending portion 315 of the wiper connector 31. The ridges 4211b are directly in contact with the flexible bending portion 315 of the wiper connector 31. The ridges 4211b are used to engage with the clamping points 3151 at the front ends of the outer walls of the flexible bending portion 315, thereby further preventing the U-shaped wiper arm 1 from detaching from the wiper connector 31 when the wiper is wiping.

[0053] like Fig.16 The present invention also discloses a wiper 100b using the above-mentioned wiper connector 3b, wherein the wiper main body structure 2 and the wiper rubber strip 23 of the wiper 100b are substantially identical to those of the wiper 100a, except that the wiper connector 3b is used to replace the wiper connector 3a, which will not be described again herein.

[0054] Third embodiment:

[0055] like Fig.17 As shown, the present invention discloses a third type of wiper connector 3c. The structure of the additional structure 4c is basically consistent with the technical principle of the additional component 4a in Example 1, and only the appearance of the base and the cover body and the locking matching structure therebetween are different. For example, the third cover body 42c is locked by the inverted connection between the hook 423c at the front end of the two side walls 427c and the buckle part 424c of the third base 41c, so it will not be repeated here.

[0056] like Fig.18 The present invention also discloses a wiper 100c using the above-mentioned wiper connector 3c, wherein the wiper main body structure 2 and the wiper rubber strip 23 of the wiper 100c are substantially identical to those of the wiper 100a, except that the wiper connector 3c is used to replace the wiper connector 3a, which will not be described again herein.

[0057] Fourth embodiment:

[0058] like Fig.19 As shown, the present invention discloses a fourth wiper connector 3d, and the additional component 4d includes a fourth base 41d and a fourth cover body 42d. The main difference between this scheme and the aforementioned additional components is that the fourth base 41d and the fourth cover body 42d are completely separated, and the first hook 4211d and the second hook 4212d formed downwardly by the two side walls 421d of the fourth cover body 42d are connected to the first clamping hole 4111d and the second clamping 4112d corresponding to the two side walls 411d of the fourth base 41d by clamping, ensuring that a closed state is formed between the fourth cover body 42d and the fourth base 41d, thereby ensuring that the two side walls 411d of the fourth cover body 41d can drive the flexible bending portion 315 of the wiper connector 31 to generate bending deformation, thereby limiting the U-shaped wiper arm 1 from detaching from the wiper connector 31.

[0059] Similarly, this type of wiper connector 3d can also be used on the aforementioned wiper main structure 2 to make a wiper having the wiper connector 3d (not shown).

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A wiper connector, comprising a wiper joint, the wiper joint comprising two longitudinal vertical side edges and a fixing surface located between the two side edges, the fixing surface is used to embed the hook-shaped end of the U-shaped wiper arm thereon, and the two side edges form a hinged connection portion, characterized in that: At least one side of the two side edges of the wiper connector at the front end portion located on the fixed surface has a flexible bending portion, and the flexible bending portion is easy to bend and deform under the action of external force; it also includes an additional component, which includes a base and a cover body, and the base is used to be fixed to the wiper bracket. When the cover body and the base are in a closed state, the cover body has at least one mating surface that abuts against the flexible bending portion, and drives the flexible bending portion to bend and deform and tightly press against the outer side of the hook-shaped end of the U-shaped wiper arm, which is used to lock the wiper connector and the U-shaped wiper arm; when the cover body and the base are in an open state, the cover body will not apply a force to the flexible bending portion to produce bending and deformation, so that the U-shaped wiper arm can be separated from the wiper connector; the inner wall of the flexible bending portion of the wiper connector is not provided with a card point or a stop edge; the front end of the outer wall of the flexible bending portion of the wiper connector is respectively provided with card points facing outward.

2. The wiper connector according to claim 1, characterized in that: Both sides of the wiper connector have flexible bending portions at the front end portion located on the fixed surface. When the cover body and the base are in a closed state, the cover body has at least two mating surfaces that respectively abut against the flexible bending portions, and drive the flexible bending portions to bend and deform inward and abut against the outer side of the hook-shaped end of the U-shaped wiper arm. At this time, the minimum spacing between the two flexible bending portions is less than the width of the U-shaped wiper arm, further limiting the U-shaped wiper arm from detaching from the wiper connector; when the cover body and the base are in an open state, the cover body will not apply a force to the flexible bending portion to cause bending and deformation, thereby facilitating the U-shaped wiper arm to detach from the wiper connector.

3. The wiper connector according to claim 1, characterized in that: The side of the wiper joint has at least two different bending strengths, and the bending strength of the flexible bending portion of the side located at the front end is less than the bending strength of the remaining parts of the side.

4. The wiper connector according to claim 3, characterized in that: The thickness of the flexible bending portion of the side edge at the front end is less than the thickness of the remaining portion of the side edge.

5. The wiper connector according to any one of claims 1 to 4, characterized in that: The additional components are a first base and a first cover body, the first base is composed of at least two side walls, the inner cavity of which is hollow, and the two side walls are used to be fixed on the wiper bracket; the first cover body is composed of a top wall and two side walls, and the top wall has a hollow portion; the rear ends of the two side walls of the first cover body and the inner ends of the rear ends of the two side walls of the first base are respectively provided with mutually matching pivot connection parts X, and the front ends of the two side walls of the first cover body and the front ends of the two side walls of the first base are respectively provided with mutually fixed locking connection parts Y; the first cover body takes the pivot connection part X as the rotation fulcrum, rotates along the length direction of the first base, and is finally fixed to the first base through the locking connection part Y; when the first cover body and the first base are in a closed state, the two side walls of the first cover body will drive the flexible bending part of the wiper joint to bend and deform inward.

6. The wiper connector according to any one of claims 1 to 4, characterized in that: The additional component includes a second base and a second cover body, the second base is composed of at least two parallel and spaced side walls, the wiper joint is arranged between the two side walls, a swivel support shaft is horizontally arranged at the front end of the two side walls, the inner ends of the two side walls have positioning parts for locking with the second cover body, and the second base is used to be fixed on the wiper bracket; the second cover body is located at the front end of the second base, the front end of the second cover body is hinged on the swivel support shaft of the second base, and its rear end has at least side walls for driving the flexible bending part of the wiper joint to deform inwardly, and there are clamping parts on the two side walls. When the second cover body and the second base are in a closed state, the clamping part of the second cover body and the positioning parts of the two side walls of the second base are snapped together to ensure that the second cover body is firmly connected to the second base, and at the same time, the side walls of the second cover body drive the flexible bending part of the wiper joint to deform inwardly.

7. The wiper connector according to claim 6, characterized in that: The second cover body comprises a top plate, a hinge groove is arranged at the front end of the top plate, two side walls are arranged downwards on both sides of the rear end of the top plate, and a transverse reinforcing rib is arranged along the width direction of the top plate at one end of the two side walls facing the hinge groove.

8. The wiper connector according to any one of claims 1 to 4, characterized in that: The additional components are a fourth base and a fourth cover body. The fourth base is used to be fixed on the wiper bracket. Its inner cavity is hollow. The wiper connector is arranged in the inner cavity. A number of clamping parts are provided on the two side walls of the fourth base; the lower ends of the two side walls of the fourth cover body are provided with a number of clamping parts opposite to the clamping parts of the fourth base. When the fourth cover body and the fourth base are in a closed state, the side walls of the fourth cover body drive the flexible bending part of the wiper connector to deform inward.

9. The wiper connector according to claim 5, characterized in that: The inner ends of the two side walls of the first cover body are respectively provided with transverse reinforcing ribs.

10. The wiper connector according to claim 6, characterized in that: The inner ends of the two side walls of the second cover body are respectively provided with transverse reinforcing ribs.

11. The wiper connector according to claim 8, characterized in that: The inner ends of the two side walls of the fourth cover body are respectively provided with transverse reinforcing ribs.

12. The wiper connector according to claim 5, characterized in that: The inner ends of the two side walls of the first cover body are provided with a plurality of ridges corresponding to the positions of the flexible bending parts of the wiper joint.

13. The wiper connector according to claim 6, characterized in that: The inner ends of the two side walls of the second cover body are provided with a plurality of ridges corresponding to the positions of the flexible bending parts of the wiper joint.

14. The wiper connector according to claim 8, characterized in that: The inner ends of the two side walls of the fourth cover body are provided with a plurality of ridges corresponding to the positions of the flexible bending parts of the wiper joint.

15. The wiper connector according to claim 5, characterized in that: The inner cavity of the first base is fixed with a connecting base, and the connecting base is provided with an articulated matching part. The wiper joint is connected with the articulated matching part of the connecting base through its articulated connecting part, so that the wiper joint can be swingably arranged on the connecting base.

16. The wiper connector according to claim 6, characterized in that: The inner cavity of the second base is fixed with a connecting base, and the connecting base is provided with an articulated matching portion. The wiper joint is connected with the articulated matching portion of the connecting base through its articulated connecting portion, so that the wiper joint can be swingably arranged on the connecting base.

17. The wiper connector according to claim 8, characterized in that: The inner cavity of the fourth base is fixed with a connecting base, and the connecting base is provided with an articulated matching part. The wiper joint is connected with the articulated matching part of the connecting base through its articulated connecting part, so that the wiper joint can be swingably arranged on the connecting base.

18. A windshield wiper, comprising a windshield wiper main structure and a windshield wiper rubber strip, wherein the windshield wiper main structure at least comprises a windshield wiper bracket and a connecting base, wherein the windshield wiper bracket is fixed with a windshield wiper rubber strip, wherein the connecting base is anchored on the windshield wiper bracket, and wherein the connecting base is provided with a hinged mating portion, wherein: It also includes a wiper connector as described in any one of claims 1-14, in which the wiper joint and the connecting base are hinged to each other to ensure the connection between the U-shaped wiper arm and the wiper main body structure.

19. A windshield wiper, comprising a windshield wiper main structure and a windshield wiper rubber strip, wherein the windshield wiper main structure comprises a windshield wiper bracket, and the windshield wiper rubber strip is fixedly mounted on the windshield wiper bracket, characterized in that: It also includes a wiper connector as described in any one of claims 15-17, by means of which the wiper connector is used to ensure the connection between the U-shaped wiper arm and the wiper body structure.

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