CN110843730A - Windscreen wiper connecting device - Google Patents

Abstract

The invention discloses a windscreen wiper connecting device, which comprises a connecting seat and a connector, wherein the connecting seat is provided with a connecting hole; the following configurations are made on the matching surfaces formed after the two are spliced and clamped: the distances from the two clamping matching surfaces to the supporting matching surface are equal; two draw-in grooves are 180 degrees rotational symmetry relative to first rotation axis, first rotation axis is the intersect of the plane of symmetry of two grafting fitting surfaces and the plane of symmetry of two butt joint fitting surfaces for the connector can be installed to the connecting seat with two opposite directions firmly, only needs the installation direction of change connector installation to the connecting seat, can adapt left rudder vehicle or right rudder vehicle's wiper installation, and the wiper firm need not the connecting device of design production difference adaptation different installation directions, has saved each cost.

Description

Windscreen wiper connecting device

Technical Field

The invention relates to the technical field of wipers, in particular to a connecting device of a wiper.

Background

A wiper blade generally consists of a wiper arm, a wiper blade, and a connecting device, wherein the connecting device generally includes a connecting seat for connecting the wiper blade and a connector for connecting the wiper arm, which are connected to connect the wiper blade to the wiper arm, completing the installation of the wiper blade.

In order to ensure that the windscreen wiper can stably run, the connector and the connecting seat are generally required to be fastened and connected, so that the connector and the connecting seat cannot shake relatively in all directions. However, after the connector and the connecting seat are fastened and connected by various connection methods in the prior art, when the wiper blade needs to be pinned to different areas, the connecting device corresponding to different mounting directions needs to be designed and produced in a matched manner, so that the connecting device can be adapted to the mounting of the wiper blades with opposite mounting positions and mounting directions of left-rudder vehicles and right-rudder vehicles, and the cost of the product is undoubtedly increased.

Disclosure of Invention

The invention aims to overcome the defects in the background art and provide a windscreen wiper connecting device which can be adapted to the stable installation of windscreen wipers of a left-rudder vehicle and a right-rudder vehicle.

To achieve the above object, the present invention provides a wiper blade connecting device, which includes a connecting base 1 for connecting a wiper blade and a connector 2 for connecting a wiper arm; the connector 2 is in inserted fit with the connecting seat 1 and forms a horizontal supporting matching surface A and two inserted matching surfaces B which are perpendicular to the supporting matching surface A and parallel to the length direction of the connecting seat 1; the connecting seat 1 is provided with two clamping grooves 13, and two ends of the connector 2 are in clamping fit with the two clamping grooves 13 to form two clamping fit surfaces C parallel to the supporting fit surface A and two abutting fit surfaces D perpendicular to the supporting fit surface A and the inserting fit surface B; the distances from the two clamping matching surfaces C to the supporting matching surface A are equal; the two clamping grooves 13 are rotationally symmetrical at 180 degrees relative to the first rotating shaft, and the first rotating shaft is an intersection line of a symmetrical plane of the two inserting matching surfaces B and a symmetrical plane of the two abutting matching surfaces D.

In one embodiment: after the connector 2 and the connecting seat 1 are in plug fit, two outer contour matching lines are formed, and the two outer contour matching lines are in 180-degree rotational symmetry with respect to the first rotating shaft.

In one embodiment: the connecting seat 1 and the connector 2 are respectively provided with a base groove 11 and a base body 21 which are matched with each other and respectively provided with a first base surface 1A and a second base surface 2A which are horizontal; one of the first base surface 1A and the second base surface 2A is provided with two convex ribs 12 along the length direction, and the other one is provided with two corresponding grooves 22; when the connector 2 is inserted into the connector holder 1, the two ribs 12 are inserted into the corresponding grooves 22, the two inner sides 1B1 and 1B2 of the two ribs are respectively matched with the inner sides 2B1 and 2B2 of the corresponding grooves 22 to form the two insertion matching surfaces B, and the first base surface 1A and the second base surface 2A are matched to form the support matching surface or the top surface 1A 'of the rib 12 is matched with the bottom surface 2A' of the groove 22 to form the support matching surface.

In one embodiment: a first end face 1D1 and a second end face 1D2 which are perpendicular to the length direction are respectively arranged at two ends of the base groove 11, and notches of the two clamping grooves 13 are respectively arranged on the two ends; two ends of the base body 21 are respectively provided with a buckle 23 matched with the clamping groove 13; horizontal supporting surfaces 1C are arranged in the two clamping grooves 13, and the distances from the two supporting surfaces 1C to the bottom surface of the base groove 11 are equal; when the connector 2 is in clamping fit with the connecting seat 1, two ends of the base body 21 are respectively matched with the first end face 1D1 and the second end face 1D2, and the two buckles 23 are respectively clamped into the corresponding clamping grooves 13 and prop against the propping face 1C in the clamping grooves; the first end face 1D1 and the second end face 1D2 form the two abutting matching faces D respectively, and the two jacking faces 1C form the two clamping matching faces C respectively.

In one embodiment: the connecting seat 1 is also provided with a transition wall 14 which is in transition connection with the groove top and the groove bottom of the base groove 11; the inner side surface of the transition wall 14 is in the same plane with the inner side surfaces 1B1 and 1B2 of the rib 12, and is matched with the side wall surface of the base body 21 when the rib 12 is inserted into the groove 22.

Compared with the prior art, the invention has the following beneficial effects:

(1) in order to achieve the object of the present invention, i.e. a wiper blade connecting device that can be adapted to the stable mounting of wiper blades of left-hand and right-hand vehicles, it must solve two problems simultaneously: first, the connector can be mounted to the connecting socket in two opposite directions; secondly, no matter what direction the two are installed, the two can be closely matched in the three orthogonal directions of length, width and height, and no shake occurs. The specific reasons are as follows:

first, the wiper blade generally has a windward side and a non-windward side, and the cross section thereof is not symmetrical, and when the wiper blade is mounted to a vehicle with a different rudder orientation, it is necessary to adaptively change the orientation of the windward side thereof. Otherwise, since the wiper arms of vehicles with different rudder directions have opposite oscillating directions, if the wiper blades are mounted to the vehicles with different rudder directions in the same direction, there is inevitably a case that they face the wind with a non-windward side as the wiper arms oscillate. In this case, the wind resistance is greatly increased compared with that of the windscreen wiper facing the wind with the windward side, so that the running stability of the windscreen wiper is greatly influenced and the windscreen wiper cannot work normally. Generally, since the connector can only connect the wiper arm in the same direction and the wiper blade can only be installed to the connecting seat in the same direction, the connector must be installed to the connecting seat in two opposite directions in order to ensure that the windward side of the wiper blade can be adaptively changed after the wiper blade is installed to the vehicle in different rudder directions.

When the windscreen wiper runs, the wiper blade and the connecting device are driven by the driving force provided by the wiper arm in the width direction, whether the wiper blade and the connecting device can stably swing along with the wiper arm or not depends on the fit clearance of the connector and the connecting seat in the width direction. And, the centrifugal force generated during the swinging process will also cause the connector and the connecting socket to have a tendency to move relatively in the length direction thereof. In addition, since the wiper blade is usually pressed against the windshield by the wiper arm in the height direction of the connecting device, the shock generated during the driving of the vehicle is transmitted from the windshield to the wiper blade and the connecting device, which also causes the connector and the connecting seat to have a tendency to move relatively in the height direction. Therefore, once the connecting device has a large fit clearance in all directions, the wiper blade will be shaken significantly during operation, and the shaking not only prevents the wiper blade from smoothly scraping the windshield, but also increases the operation noise and reduces the safety. Therefore, in order to ensure that the wiper blade can normally work after being installed on vehicles with different rudder directions, the connector and the connecting seat need to be tightly matched in three orthogonal directions of length, width and height without shaking when being installed in different directions.

According to the windscreen wiper connecting device provided by the embodiment of the invention, the connector and the connecting seat form the supporting matching surface, two inserting matching surfaces, two clamping matching surfaces and two abutting matching surfaces through inserting matching and clamping matching, wherein the supporting matching surface is combined with the two clamping matching surfaces to limit in the height direction, and the two inserting matching surfaces and the abutting matching surfaces limit in the width direction and the length direction respectively, so that when the connector is installed to the connecting seat in a certain direction, the connector and the connecting seat can be tightly matched in three orthogonal directions of length, width and height without shaking.

Because the splicing matching surface and the abutting matching surface are mutually vertical, the square limiting form of four pairwise vertical matching surfaces is formed on the horizontal plane, and when the connector is changed in direction on the horizontal plane relative to the connecting seat, the four matching surfaces can be formed inevitably. The support matching surface is naturally formed after the two are spliced, and the connecting seat can still form the support matching surface after the direction is changed. The clamping matching surface is formed by clamping and matching two clamping grooves of the connecting seat and two ends of the connector, and forming essential parts of the clamping matching surface do not depend on the square limiting form, so that after the direction is changed, the connector and the connecting seat can not be clamped and matched to limit in the height direction.

In view of the above, the two clamping matching surfaces are arranged to have the same distance to the support matching surface, that is, the two clamping matching surfaces are located at the same horizontal height, so that after the direction exchange is performed, the two clamping matching surfaces with the same height as that before the exchange can be formed, and can be combined with the support matching surface to perform the limiting in the height direction. In addition, two draw-in grooves are configured as relatively first rotation axis is 180 degrees rotational symmetry, and after the direction is changed, the structure and the position of two draw-in grooves of counterpointing rather than connector both ends all can not change, so connector and connecting seat as long as can the joint cooperation in certain direction, just must also the joint cooperation after the direction is changed, form two joint fitting surfaces to it is spacing to carry out in the direction of height.

Therefore, after the arrangement, the connector can be firmly installed to the connecting seat in a certain direction, and can be firmly installed to the connecting seat in an opposite direction, and the connector and the connecting seat can be tightly matched in three orthogonal directions of length, width and height without shaking, so that shaking and noise generated when the windscreen wiper runs are reduced, and the working stability and safety of the windscreen wiper are enhanced. Moreover, the installation direction of the connector to the connecting seat is changed, so that the windscreen wiper can be installed in a manner of being matched with the windscreen wipers of vehicles with different rudder directions, windscreen wiper manufacturers do not need to design and produce connecting devices which are respectively matched with different installation directions, and the cost is saved.

(2) For the matching relation of the connecting device in the width direction, if only one convex rib and one groove are arranged, because the dimension of the convex rib in the width direction is relatively small, and the dimension tolerance of the convex rib in the width direction is difficult to control, when the convex rib is inserted into the groove, although the two inserting matching surfaces can be formed theoretically, in practice, only one inserting matching surface can be formed because the convex rib necessarily has a large matching gap, and the matching relation in the width direction is not firm. The number of the convex ribs and the number of the concave grooves are two, the inner side surfaces of the convex ribs and the concave grooves are mutually and tightly matched to form the inserting matching surfaces, and the two inserting matching surfaces can be formed under the condition that the dimensional tolerance is easy to control due to the fact that the size between the two convex ribs and the size between the two concave grooves are larger, the matching gap is reduced, the connector and the connecting seat are matched more tightly in the width direction, and the running of the windscreen wiper is more stable.

(3) The connector and the connecting seat form two outer contour matching lines after being spliced and matched, and the two outer contour matching lines are in 180-degree rotational symmetry relative to the first rotating shaft, so that the connecting device can still have regular appearance and higher attractiveness as before after the direction is changed and the connecting device is installed.

(4) The inner side surface of the transition wall and the inner side surface of the convex rib are positioned on the same plane, and when the convex rib is matched with the groove, the transition wall is also tightly matched with the side wall surface of the base body so as to increase the area of the matching surface in the width direction, balance the stress condition of the convex rib and the groove in the width direction and increase the structural strength of the connecting device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a perspective view of a wiper connecting device according to an embodiment of the present invention, including a connecting head, after installation;

FIG. 2 is a perspective view of a wiper connecting device of an embodiment of the present invention without a connecting head mounted thereon;

FIG. 3 is a top view of the structure shown in FIG. 2;

FIG. 4 is a cross-sectional view of section E-E of FIG. 3;

FIG. 5 is a cross-sectional view taken along section F-F of FIG. 3;

FIG. 6 is a perspective view of a connecting base according to an embodiment of the present invention;

FIG. 7 is a top view of the structure shown in FIG. 6;

FIG. 8 is a cross-sectional view of section G-G of FIG. 7;

FIG. 9 is a cross-sectional view taken at section H-H of FIG. 7;

FIG. 10 is a perspective view of a connector according to an embodiment of the present invention;

FIG. 11 is a top view of the structure shown in FIG. 10;

FIG. 12 is a cross-sectional view taken at section I-I of FIG. 11;

FIG. 13 is a cross-sectional view of section J-J of FIG. 11;

fig. 14 is an exploded view of a wiper blade using a wiper blade connecting device according to an embodiment of the present invention;

fig. 15 is a perspective view of a wiper blade employing a wiper blade connecting device in accordance with an embodiment of the present invention;

fig. 16 is a side view of a wiper blade using a wiper blade connecting device according to an embodiment of the present invention.

Description of the main reference numerals:

1-connecting seat, 2-connector, 11-base groove, 12-convex rib, 13-clamping groove, 14-transition wall, 21-base body, 22-groove, 23-buckle, 24-flank, 29-connecting head, 231-elastic buckle and 232-inelastic buckle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the invention and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the specification and the drawings of the present invention, unless otherwise specifically limited, the terms "fixedly connected" or "fixedly connected" should be understood in a broad sense, i.e., any connection mode without displacement relationship or relative rotation relationship between the two, i.e., including non-detachably fixed connection, and fixedly connected through other devices or elements.

Fig. 1 shows an assembled schematic view of a wiper blade connecting device according to an embodiment of the present invention, which includes a connecting socket 1 for connecting a wiper blade and a connector 2 for connecting a wiper arm. Wherein the connector 2 comprises a base body 21 and a connection head 29. The connecting head 29 is adapted to be connected to a wiper arm and is hinged to the base body 21 by means of a hinge axis parallel to the width direction of the connecting device. Since the connection head 29 is not germane to the emphasis of the present application, it is hidden in the following fig. 2-13 to more clearly show the structure of the base body 21.

Referring to fig. 6-9, the connecting base 1 is provided with a base groove 11 along the length direction thereof. The horizontal bottom surface of the base groove 11 is defined as a first base surface 1A, and both end surfaces of the base groove 11 perpendicular to the longitudinal direction are defined as a first end surface 1D1 and a second end surface 1D2, respectively. The first base surface 1A is convexly provided with two ribs 12 along the length direction, top surfaces 1A' of the two ribs 12 are positioned on the same plane, and the first base surface also has two opposite first inner side surfaces 1B1 and second inner side surfaces 1B 2. The connecting seat 1 is further provided with two clamping grooves 13, notches of the two clamping grooves are respectively located on the first end face 1D1 and the second end face 1D2, and horizontal supporting faces 1C are arranged in the clamping grooves 13. The base groove 11 is further provided with a transition wall 14 along the length direction. In the present embodiment, the transition wall 14 has an arc-shaped configuration that transitions between the groove top and the groove bottom of the base groove 11. The number of the transition walls is 4, the transition walls are respectively positioned at four corners of the base groove 11, two transition walls 14 positioned at the same side correspond to one convex rib 12, and the inner side surface of each transition wall and the inner side surface of the corresponding convex rib 12 are positioned on the same plane.

Referring to fig. 10 to 13, the base body 21 of the connector 2 is fitted to the base groove 11 so that its longitudinal direction matches the longitudinal direction of the base groove 11. The horizontal bottom surface of the base 21 is defined as a second base surface 2A, and both end surfaces thereof perpendicular to the longitudinal direction are defined as a third end surface 2D1 and a fourth end surface 2D2, respectively. Two side walls of the base body 21 parallel to the length direction are extended outwards to form side wings 24, and two grooves 22 corresponding to the two ribs 12 are formed between the side wings and the side walls of the base body 21. The two grooves 22 have their notches facing the second base surface 2A, their groove bottom surfaces 2A' being in the same plane, and having a third inner side surface 2B1 and a fourth inner side surface 2B2, which are also wall surfaces of the two side walls of the base body 21. The third end face 2D1 and the fourth end face 2D2 are respectively provided with two fasteners 23 adapted to the card slot 13, wherein one of the fasteners 231 is configured as an elastic fastener to facilitate the insertion of the base 21 into the base slot 11. The two clips 23 each have an abutting portion 2C that cooperates with the abutting surface 1C of the slot 13, in this embodiment, the abutting portion of the elastic clip 231 is configured to have an inclined surface with a certain inclination angle with respect to the horizontal plane, and the abutting portion of the inelastic clip 232 is configured to have an arc-shaped curved surface.

When the connector 2 is mounted to the connecting seat 1, the base body 21 and the base groove 11 are aligned in the length direction in a certain direction, the non-elastic buckle 232 of the base body 21 is firstly clamped into the aligned clamping groove 13 under the limiting and guiding effects of the convex rib 12, the groove 22, the side wall of the base body 21 and the transition wall 14, and then the elastic buckle 231 at the other end of the base body 21 is buckled into the other clamping groove 13, so that the mounting can be completed. When the connector is disassembled, the elastic buckle 231 is elastically deformed to separate from the corresponding clamping groove 13, and then another buckle 232 is easily separated from the corresponding clamping groove 13, so that the connector 2 is quickly separated from the connecting seat 1.

Referring to fig. 2-5, after the installation, the base 21 is placed in the base groove 11, the ribs 12 are inserted into the grooves 22, and the two fasteners 23 are engaged with the two engaging grooves 13, so that the connector 2 is fastened to the connector holder 1. In a specific structure, the connecting device can be tightly matched through the first base surface 1A and the second base surface 2A in the height direction, and a horizontal supporting matching surface A is formed; in addition, in the height direction, the abutting portions 2C of the two clasps 23 are respectively abutted and matched with the abutting surfaces 1C of the two card slots 13, and two horizontal card matching surfaces C are respectively formed. Further, in the width direction, the first inner side face 1B1 and the second inner side face 1B2 are closely fitted with the third inner side face 2B1 and the fourth inner side face 2B2, respectively, and the inner side face of the transition wall 14 is also fitted with the side wall face of the base body 21; because the inner side surface of the transition wall 14 and the inner side surface of the corresponding convex rib 12 are in the same plane, and the side wall surface of the base body 21 and the inner side surface of the corresponding groove 22 are in the same plane, the two corresponding plug-in matching surfaces B are formed together. And in the length direction, the first end surface 1D1 and the second end surface 1D2 are respectively tightly matched with the third end surface 2D1 and the fourth end surface 2D2 and respectively form two abutting matching surfaces D. In other embodiments, another support mating surface parallel to but spaced apart from the support mating surface a shown can also be formed by mating the top surfaces 1A 'of the two ribs 12 and the bottom surfaces 2A' of the two grooves 22.

Thereby, connecting device carries on spacingly at the direction of height through supporting fitting surface A and joint fitting surface C, carries on spacingly at width direction through two grafting fitting surfaces B, carries on spacingly at length direction through two butt fitting surfaces D for connector 2 and connecting seat 1 are when installing with certain direction, closely cooperate in the three orthogonal direction homoenergetic of length width height, do not take place to rock, shake and the noise that produces when having reduced the wiper operation, have strengthened its job stabilization nature and security.

Because the inserting matching surface B and the abutting matching surface D are mutually vertical, the four square limiting forms of the two-two vertical matching surfaces are formed on the horizontal plane, and when the direction of the connector 2 is changed on the horizontal plane relative to the connecting seat 1, the four matching surfaces can be formed inevitably. The support matching surface A is naturally formed after the two are spliced, and the connecting seat can still form the support matching surface A after the direction is changed.

In order to enable the connecting device to have a close-fitting relationship in both of two opposite mounting directions, the embodiment of the present invention further has the following configuration:

first, the distances from the two supporting surfaces 1C in the two slots 13 to the first base surface 1A are equal, so that the two supporting surfaces 1C are located on the same plane and have the same horizontal height. After the matching, the distances from the two clamping matching surfaces C to the supporting matching surface A are equal.

Two clamping grooves 13 are in 180-degree rotational symmetry relative to the first rotating shaft. The first rotating shaft is an intersection line of a symmetrical plane of the two inserting matching surfaces B and a symmetrical plane of the two abutting matching surfaces D. It should be noted that the term symmetry plane here means that the two planes are symmetrical with respect to the symmetry plane.

Because the first rotating shaft is the intersection line of the symmetrical planes of the two inserting matching surfaces B and the symmetrical planes of the two abutting matching surfaces D, the first rotating shaft is necessarily parallel to the inserting matching surfaces B and the abutting matching surfaces D and is perpendicular to the horizontal plane, namely perpendicular to the supporting matching surface A and the clamping matching surface C.

After the direction change under the configuration, because the rotational symmetry characteristics of the two card slots 13, the structure and the position in the width direction of the two card slots 13 of the connecting seat 1 do not change relative to the connector 2, the two buckles 23 can still align with the two card slots 13 in the width direction, and the horizontal height of the top holding surface 1C forming the clamping matching surface C does not change. Therefore, as long as the connector 2 and the connecting seat 1 can be in clamping fit in a certain direction, the propping part 2C can prop and prop with the propping surface 1C, and then after the direction is changed, the propping part 2C can also prop and prop with the propping surface 1C, and the buckle 23 can be in clamping fit with the aligned clamping groove 13 and form a clamping fit surface C with the same height as that before the direction is changed.

Therefore, after the connector 2 and the connecting seat 1 are aligned in the length direction, no matter the direction relationship between the connector 2 and the connecting seat 1 is forward or reverse, the connector 2 and the connecting seat can be inserted, matched and clamped to form a supporting matching surface A, an inserting matching surface B, a clamping matching surface C and an abutting matching surface D, so that a limiting relationship is formed in the height direction, the width direction and the length direction, the connector 2 and the connecting seat 1 are effectively limited by the matching surfaces which are tightly matched in all directions, the swinging cannot occur, the matching gap between the connector 2 and the connecting seat is reduced, the shaking phenomenon during the operation of the windscreen wiper is reduced, and the working stability of the windscreen wiper is enhanced. In addition, the connector 2 can be installed on the connecting seat 1 in two opposite directions, so that the connecting device of the embodiment of the invention can be adapted to the installation of the windscreen wipers of vehicles with different rudder directions only by changing the installation direction of the connector 2 on the connecting seat 1, and windscreen wiper manufacturers do not need to design and produce connecting devices adapted to different installation directions, thereby saving various costs.

In addition, connector 2 and connecting seat 1 are after the grafting cooperation, the contour line of transition wall 14 is linked with the contour line of basic groove 11 tank bottom, the contour line of flank 24 matches with the contour line after this is linked, and it forms two outline mating lines in connecting device's both sides jointly, and it also is about first rotation axis is 180 degrees rotational symmetry to make the connecting device of this embodiment still can have comparatively regular outward appearance after changing the direction and installing, and the pleasing to the eye degree is higher.

It should be noted that the formation and specific configuration of the support mating surface a, the plug mating surface B, the snap mating surface C, and the abutting mating surface D are not limited to the forms set forth in the present embodiment. As in the present embodiment, the number of the ribs 12 and the grooves 22 is two, and the inner side surface of the transition wall 14 is in the same plane as the inner side surface of the rib 12, so as to reduce the fit clearance and enhance the structural strength of the connecting device under the condition of easily controlling the dimensional tolerance. In other embodiments, the above structures may adopt different arrangement modes from the present embodiment, and may also adopt concave-convex structures, stop structures and other forms in other directions, so as to form a limiting relationship in each direction, which is not exhaustive herein.

Referring to fig. 14 to 16, which show the construction of the wiper blade using the wiper blade connecting device of the present embodiment, after the connecting head 29 of the connector 2, the base body 21 of the connector 2, and the base groove 11 of the connecting block 1 are connected, respectively, the wiper blade and the wiper arm are connected to the connecting head 29 and the connecting block 1, respectively, and the installation of the wiper blade is completed.

The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the invention or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the invention.

Claims (5)

1. A wiper blade connecting device includes a connecting base (1) for connecting a wiper blade and a connector (2) for connecting a wiper arm;

the connector (2) is in plug-in fit with the connecting seat (1) to form a horizontal supporting matching surface (A) and two plug-in matching surfaces (B) which are perpendicular to the supporting matching surface (A) and parallel to the length direction of the connecting seat (1);

the connecting seat (1) is provided with two clamping grooves (13), and two ends of the connector (2) are in clamping fit with the two clamping grooves (13) to form two clamping fit surfaces (C) parallel to the support fit surface (A) and two abutting fit surfaces (D) perpendicular to the support fit surface (A) and the inserting fit surface (B);

the method is characterized in that:

the distances from the two clamping matching surfaces (C) to the supporting matching surface (A) are equal;

the two clamping grooves (13) are in 180-degree rotational symmetry relative to the first rotating shaft, and the first rotating shaft is an intersection line of a symmetrical plane of the two inserting matching surfaces (B) and a symmetrical plane of the two abutting matching surfaces (D).

2. The wiper blade attachment device of claim 1, wherein:

after the connector (2) and the connecting seat (1) are in plug fit, two outer contour matching lines are formed, and the two outer contour matching lines are rotationally symmetrical about the first rotating shaft by 180 degrees.

3. The wiper blade attachment device of claim 2, wherein:

the connecting seat (1) and the connector (2) are respectively provided with a base groove (11) and a base body (21) which are matched with each other, and the base grooves and the base bodies are respectively provided with a first base surface (1A) and a second base surface (2A) which are horizontal; one of the first base surface (1A) and the second base surface (2A) is provided with two convex ribs (12) along the length direction, and the other base surface is provided with two corresponding grooves (22);

when the connector (2) is in plug fit with the connecting seat (1), the two ribs (12) are respectively inserted into the corresponding grooves (22), two inner side surfaces (1B1, 1B2) of the two ribs are respectively matched with inner side surfaces (2B1, 2B2) of the corresponding grooves (22) to form the two plug fit surfaces (B), and the first base surface (1A) and the second base surface (2A) are matched to form the support fit surface or the top surface (1A ') of the rib (12) is matched with the bottom surface (2A') of the groove (22) to form the support fit surface.

4. The wiper blade attachment device of claim 3, wherein:

a first end face (1D1) and a second end face (1D2) which are perpendicular to the length direction are respectively arranged at two ends of the base groove (11), and notches of the two clamping grooves (13) are respectively arranged on the two end faces; two ends of the base body (21) are respectively provided with a buckle (23) matched with the clamping groove (13); horizontal supporting surfaces (1C) are arranged in the two clamping grooves (13), and the distances from the two supporting surfaces (1C) to the bottom surface of the base groove (11) are equal;

when the connector (2) is in clamping fit with the connecting seat (1), two ends of the base body (21) are respectively matched with the first end face (1D1) and the second end face (1D2), and the two buckles (23) are respectively clamped into the corresponding clamping grooves (13) and prop against the propping face (1C) in the clamping grooves; first terminal surface (1D1) and second terminal surface (1D2) form respectively two butt fitting surface (D), two top holding surface (1C) form respectively two joint fitting surface (C).

5. The wiper blade attachment device of claim 3, wherein:

the connecting seat (1) is also provided with a transition wall (14) which is in transition connection with the groove top and the groove bottom of the base groove (11);

the inner side surface of the transition wall (14) and the inner side surfaces (1B1, 1B2) of the convex ribs (12) are positioned on the same plane and are matched with the side wall surface of the base body (21) when the convex ribs (12) are inserted into the grooves (22).

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