CN219029361U

CN219029361U - Boneless windshield wiper convenient to fixed end cover and shell fragment adhesive tape sub-assembly

Info

Publication number: CN219029361U
Application number: CN202223332344.1U
Authority: CN
Inventors: 刘欢; 黄松林
Original assignee: Jiangsu Yunrui Automotive Electrical System Co ltd
Current assignee: Jiangsu Yunrui Automotive Electrical System Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-16
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a boneless wiper convenient for fixing an end cover and elastic sheet adhesive tape assembly, which relates to the technical field of wipers, wherein a positioning groove is formed in the outer end of an elastic sheet, a rectangular hole is formed in the surface of the elastic sheet, which is close to the positioning groove, the end cover is a plastic shell, an inserting opening is formed in the inner end of the end cover, guide grooves extending into the end cover are oppositely formed in the left wall and the right wall of the inner side of the end cover, positioning protrusions matched with the positioning groove are arranged on the outer side of the guide grooves, rectangular slope protrusions are arranged on the upper surface of the groove wall on the lower side of the guide grooves, the slope surfaces of the slope protrusions are opposite to the inserting opening, and the slope protrusions are matched with the rectangular holes. The positioning groove and the positioning protrusion are arranged, and the slope-shaped protrusion and the rectangular hole are arranged, so that fixation and limiting are formed between the end cover and the elastic sheet.

Description

Boneless windshield wiper convenient to fixed end cover and shell fragment adhesive tape sub-assembly

Technical Field

The utility model relates to the technical field of wipers, in particular to a boneless wiper convenient for fixing an end cover and elastic sheet adhesive tape assembly.

Background

Boneless wipers are common fittings for vehicles. The boneless wiper mainly comprises an adhesive tape, a spring piece, a wiper sheath and a connecting piece. After the connecting piece, the elastic sheet and the adhesive tape are assembled, the two sides of the connecting piece are sleeved with the wiper sheath, and then the outer end of the adhesive tape and the elastic sheet assembly is provided with the end cover. At present, the matching mode of the wiper end cover and the elastic sheet on the market is basically that an assembling groove is formed in the side edge of the elastic sheet, an inverted structure is arranged in the end cover, an installer is required to forcefully squeeze the combined piece of the elastic sheet and the elastic sheet into the end cover after the elastic sheet is assembled with the elastic sheet, the combined piece of the elastic sheet and the elastic sheet is prevented from falling off through the inverted structure and the assembling groove, the inventor considers that the structure is required to have higher requirements on the matching tolerance of the inner wall of the end cover and the outer wall of the combined piece of the elastic sheet and the elastic sheet, if the matching clearance of the inner wall of the end cover and the outer wall of the combined piece of the elastic sheet and the elastic sheet is larger, the end cover cannot generate sufficient static friction, the end cover can shake, abnormal noise is generated, and if the matching clearance of the inner wall of the end cover and the outer wall of the combined piece of the elastic sheet and the elastic sheet is smaller, the outer wall of the end cover is extremely easy to stab the coating on the outer surface of the end cover when the combined piece of the elastic sheet and the elastic sheet is assembled, and the elastic sheet is also possible to destroy the elastic sheet when serious. Although the dimensional tolerance of the inner wall of the end cover can be accurately controlled through a high-cost die, the outer wall of the assembly of the elastic sheet and the adhesive tape has no doubt assembly errors, and the precise control is extremely difficult. For this reason, it is required to design a boneless wiper which is convenient for fixing the end cover and the elastic sheet adhesive tape assembly.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and thus may include information that does not constitute prior art.

Disclosure of Invention

The inventor finds that according to the existing fixing mode of the end cover and the elastic sheet adhesive tape assembly, the elastic sheet adhesive tape assembly can cause the technical problems of difficult assembly or easy damage of components because the gap between the outer wall of the elastic sheet adhesive tape assembly and the inner wall of the end cover cannot be accurately controlled.

In view of at least one of the above technical problems, the present disclosure provides a boneless wiper convenient for fixing an end cover and elastic sheet adhesive tape assembly, and the specific technical scheme is as follows:

the utility model provides a boneless wiper convenient to fixed end cover and shell fragment adhesive tape sub-assembly, includes the connecting piece, and the connecting piece is fixed with two parallel arrangement's shell fragment, has set up the adhesive tape in the middle of two shell fragments, constitutes shell fragment adhesive tape sub-assembly after two shell fragments and the adhesive tape assembly, and the end cover has been set up to the outer tip of shell fragment, the outer end of shell fragment is equipped with the constant head tank, and the surface of shell fragment is close to constant head tank department and is equipped with the rectangular hole, and the end cover is the plastics casing, and the inner of end cover is established to the inserted hole, and the inside left and right sides wall of end cover is equipped with the guide way that extends to the end cover inside relatively, and the outside of guide way is equipped with the location arch of joining in marriage the usefulness with the constant head tank, and the upper surface of guide way downside cell wall is equipped with the sloping of rectangle protruding slope and is relative with the inserted hole, sloping protruding and rectangular hole adaptation.

In some embodiments of the present disclosure, the width of the ramp shaped protrusion is no greater than 1mm than the width of the rectangular aperture.

In some embodiments of the present disclosure, a side of the positioning protrusion near the insertion port is provided with a rounded corner or chamfer.

In some embodiments of the present disclosure, the notch of the positioning groove is provided with a rounded corner or chamfer.

In some embodiments of the present disclosure, the locating boss is provided on an inner wall of the end cap.

In some embodiments of the present disclosure, the guide slot underside slot wall is no greater than 1.5mm thick.

In some embodiments of the disclosure, the inner wall of the end cover is provided with a clearance groove at the projection of the positioning protrusion.

In some embodiments of the present disclosure, the ramp angle of the ramp protrusion is 5 to 25 °.

In some embodiments of the present disclosure, the inner end surface of the ramp protrusion is perpendicular to the axis of the guide slot.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, through the arrangement of the positioning groove and the positioning bulge and the arrangement of the slope bulge and the rectangular hole, the fixing and the limiting are formed between the end cover and the elastic sheet, the external size of the elastic sheet adhesive tape assembly is not required to be accurately controlled, the dimensional tolerance of the inner wall of the end cover is not required to be accurately controlled by adopting a high-cost die for the end cover, the operation is convenient, and the assembly mode is simple; the end cover has simple structure, can be injection molded at one time and is convenient for production and processing.

Drawings

FIG. 1 is a schematic perspective view of the structure of the present utility model in elevation with the end cap and spring plate engaged;

FIG. 2 is a schematic perspective view of the end cap of the present utility model from the elevation view;

fig. 3 is a schematic perspective view of a spring plate in the structure of the present utility model.

The reference numerals in the figures illustrate: 1. a spring plate; 11. a positioning groove; 12. a rectangular hole; 2. an end cap; 21. an insertion port; 22. a guide groove; 221. a sloping bulge; 23. positioning the bulge; 24. and a clearance groove.

The specific embodiment is as follows:

for a better understanding of the objects, structures and functions of the present utility model, reference should be made to the accompanying drawings in which embodiments of the utility model are shown, and in which it is apparent that some, but not all embodiments of the utility model are described.

The component parts themselves are numbered herein only to distinguish between the stated objects and do not have any sequential or technical meaning. In this disclosure, the term "coupled" includes both direct and indirect, "as used herein, unless specifically indicated otherwise. In the description of the present application, it should be understood that the azimuth or positional relationship indicated by the azimuth terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are azimuth or positional relationships based on the use state, are merely for convenience of description of the present application and brief description, and do not indicate or imply that the apparatus or unit referred to must have a specific azimuth, be configured and operate in a specific azimuth, and thus should not be construed as limiting the present application.

As shown in fig. 1 to 3 of the attached drawings, a boneless wiper convenient for fixing an end cover and elastic sheet adhesive tape assembly is designed, the boneless wiper comprises a connecting piece, two elastic sheets 1 which are arranged in parallel are fixed on the connecting piece, an adhesive tape is arranged between the two elastic sheets 1, the elastic sheet adhesive tape assembly is formed by assembling the two elastic sheets 1 and the adhesive tape, an end cover 2 is arranged at the outer end part of the elastic sheet adhesive tape assembly, a positioning groove 11 is arranged at the outer end of the elastic sheet 1, a rectangular hole 12 is arranged on the surface of the elastic sheet 1 close to the positioning groove 11, the end cover 2 is an integrally injection molded plastic shell, the inner end of the end cover 2 is provided with an insertion port 21, the left wall and the right wall on the inner side of the end cover 2 are oppositely provided with guide grooves 22 which extend to the inner part of the end cover 2, the outer side of the guide grooves 22 are provided with positioning protrusions 23 which are matched with the positioning groove 11, the upper surfaces of the groove walls on the lower sides of the guide grooves 22 are provided with rectangular sloping protrusions 221, the sloping surfaces of the sloping protrusions 221 are opposite to the insertion port 21, and the sloping protrusions 221 are matched with the rectangular holes 12, and the positioning grooves 11 and the positioning protrusions 23 are matched with the rectangular holes 12, so that the end cover 2 and the elastic sheet 2 do not need to be precisely controlled in size, and the assembly is not required to be accurately controlled, and the size of the end cover 2 is not to be assembled, and the size of the end cover 2 is convenient to have a high precision and dimensional tolerance, and the assembly mode; the end cover 2 has a simple structure, can be formed by one-step injection molding, and is convenient to produce and process.

When the elastic sheet adhesive tape assembly is used, firstly, the connecting piece and the two elastic sheets 1 are welded and fixed by ultrasonic waves, the two elastic sheets 1 are guaranteed to be parallel to each other, then the adhesive tape is penetrated in a gap between the two elastic sheets 1, the assembled elastic sheet adhesive tape assembly can be obtained, then, the end part of the elastic sheet adhesive tape assembly is inserted into the end cover 2 from the insertion opening 21, the positioning groove 11 of the elastic sheet 1 is inserted and matched with the positioning bulge 23, the slope-shaped bulge 221 is inserted and matched with the rectangular hole 12, and the limiting of a plurality of degrees of freedom is carried out, so that the fixing is realized.

In the above embodiments, the above technical solutions are implemented by listing 3 examples:

example 1

The embodiment discloses a boneless wiper convenient for fixing an end cover and elastic sheet adhesive tape assembly, comprising a connecting piece, wherein two elastic sheets 1 which are arranged in parallel are fixed on the connecting piece, an adhesive tape is arranged between the two elastic sheets 1, the two elastic sheets 1 and the adhesive tape are assembled to form an elastic sheet adhesive tape assembly, an end cover 2 is arranged at the outer end of the elastic sheet adhesive tape assembly, a positioning groove 11 is arranged at the outer end of the elastic sheet 1, a rectangular hole 12 is arranged on the surface of the elastic sheet 1 near the positioning groove 11, the end cover 2 is an integrally injection molded plastic shell, the inner end of the end cover 2 is arranged as an inserting port 21, guide grooves 22 which extend into the end cover 2 are oppositely arranged on the left wall and the right wall of the inner side of the end cover 2, positioning protrusions 23 which are matched with the positioning groove 11 are arranged on the outer side of the guide grooves 22, rectangular sloping protrusions 221 are arranged on the upper surface of the lower side groove wall of the guide grooves 22, the sloping surfaces of the sloping protrusions 221 are opposite to the inserting port 21, and the sloping protrusions 221 are matched with the rectangular holes 12, and the sloping protrusions 221 and the rectangular holes 12 are matched through the positioning grooves 11 and the positioning protrusions 23, so that the end cover 2 and the end cover 1 are fixed, the elastic sheet 2 and the elastic sheet assembly is not required to be accurately controlled in size, and the size of the end cover 2 is not required to be accurately controlled, and the size of the end cover is convenient to be assembled, and the end cover is also has high accuracy and dimensional tolerance; the end cover 2 has a simple structure, can be formed by one-step injection molding, and is convenient to produce and process.

Wherein, the width of the sloping protrusion 221 is not greater than 1mm compared with the width of the rectangular hole 12, which can be 0.8mm in the embodiment, and the rectangular hole 12 can form linear limit to the side surface of the sloping protrusion 221 by means of the straight edge; the positioning protrusion 23 is provided with a round angle or a chamfer on one side close to the insertion opening 21, the notch of the positioning groove 11 is provided with a round angle or a chamfer, and the positioning protrusion 23 can be better matched with the positioning groove 11; the positioning bulge 23 is arranged on the inner wall of the end cover 2 and is integrally injection molded; the thickness of the lower side groove wall of the guide groove 22 is not more than 1.5mm, the thickness of the lower side groove wall of the guide groove can be 1.5mm, the projection position of the positioning protrusion 23 on the inner wall of the end cover 2 is provided with a position avoiding groove 24, and a position avoiding position can be provided for the positioning protrusion 23; the slope angle of the slope-shaped protrusion 221 is 5 degrees, the inner end surface of the slope-shaped protrusion 221 is perpendicular to the axis of the guide groove 22, and the inner end surface can be matched with the rectangular hole 12 to form limit.

Example 2

The difference between the embodiment and the embodiment 1 is that the width of the sloping protrusion 221 is not greater than 1mm compared with the width of the rectangular hole 12, the embodiment can be 1mm, and the rectangular hole 12 can form linear limit on the side surface of the sloping protrusion 221 by means of the straight edge of the rectangular hole 12; the positioning protrusion 23 is provided with a round angle or a chamfer on one side close to the insertion opening 21, the notch of the positioning groove 11 is provided with a round angle or a chamfer, and the positioning protrusion 23 can be better matched with the positioning groove 11; the positioning bulge 23 is arranged on the inner wall of the end cover 2 and is integrally injection molded; the thickness of the groove wall at the lower side of the guide groove 22 is not more than 1.5mm, the thickness of the groove wall can be 1mm, the projection position of the positioning protrusion 23 on the inner wall of the end cover 2 is provided with a position avoiding groove 24, and a position avoiding position can be provided for the positioning protrusion 23; the slope angle of the slope-shaped protrusion 221 is 25 degrees, the inner end surface of the slope-shaped protrusion 221 is perpendicular to the axis of the guide groove 22, and the inner end surface can be matched with the rectangular hole 12 to form limit.

Example 3

The difference between the embodiment and the embodiment 1 is that the width of the sloping protrusion 221 is not greater than 1mm compared with the width of the rectangular hole 12, the embodiment can be 0.5mm, and the rectangular hole 12 can form linear limit on the side surface of the sloping protrusion 221 by means of the straight edge; the positioning protrusion 23 is provided with a round angle or a chamfer on one side close to the insertion opening 21, the notch of the positioning groove 11 is provided with a round angle or a chamfer, and the positioning protrusion 23 can be better matched with the positioning groove 11; the positioning bulge 23 is arranged on the inner wall of the end cover 2 and is integrally injection molded; the thickness of the lower side groove wall of the guide groove 22 is not more than 1.5mm, the thickness of the lower side groove wall of the guide groove can be 0.8mm, and the projection position of the positioning protrusion 23 on the inner wall of the end cover 2 is provided with a position avoiding groove 24 which can provide a position avoiding for the positioning protrusion 23; the slope angle of the slope-shaped protrusion 221 is 20 degrees, the inner end surface of the slope-shaped protrusion 221 is perpendicular to the axis of the guide groove 22, and the inner end surface can be matched with the rectangular hole 12 to form limit.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a boneless wiper convenient to fixed end cover and shell fragment adhesive tape sub-assembly, includes the connecting piece, and the connecting piece is fixed with two parallel arrangement's shell fragment (1), and the adhesive tape has been joined in marriage in the middle of two shell fragments (1), constitutes shell fragment adhesive tape sub-assembly after two shell fragment (1) and adhesive tape assembly, and the outer tip of shell fragment adhesive tape sub-assembly is equipped with end cover (2), its characterized in that, the outer end of shell fragment (1) is equipped with constant head tank (11), and the surface of shell fragment (1) is close to constant head tank (11) department and is equipped with rectangular hole (12), and end cover (2) are plastic housing, and the inner of end cover (2) is established to inserted port (21), and the left and right sides wall of end cover (2) inboard is equipped with relatively and extends to inside guide way (22) of end cover (2), and the outside of guide way (22) is equipped with and constant head tank (11) matched with location arch (23), and the upper surface of guide way (22) downside cell wall is equipped with slope protruding (221) of rectangle, slope protruding (221) and inserting port (21) are relative, slope protruding (221) and rectangular hole (12) adaptation.

2. The boneless wiper facilitating securing of end cap and spring tab combinations as claimed in claim 1, wherein the width of the ramp shaped protrusion (221) is no more than 1mm than the width of the rectangular aperture (12).

3. Boneless wiper facilitating fixing of end cap and spring tab combinations according to claim 1, characterized in that the positioning protrusion (23) is provided with a rounded or chamfered corner on the side close to the insertion opening (21).

4. A boneless wiper facilitating fixing of end cap and spring tab combinations according to claim 1 or 3, characterized in that the notch of the positioning groove (11) is provided with rounded corners or chamfers.

5. Boneless wiper facilitating fixing of end cap and spring tab combinations according to claim 1, characterized in that the positioning protrusions (23) are provided on the inner wall of the end cap (2).

6. Boneless wiper facilitating fixing of end cap and spring tab combinations according to claim 1, characterized in that the thickness of the lower groove wall of the guiding groove (22) is not more than 1.5mm.

7. Boneless wiper facilitating fixing of end cap and spring plate and rubber strip assembly according to claim 1, characterized in that the inner wall of the end cap (2) is provided with a clearance groove (24) at the projection of the positioning protrusion (23).

8. The boneless wiper facilitating fixing of end cap and spring tab combinations as claimed in claim 1, wherein the slope angle of the slope shaped protrusion (221) is 5-25 °.

9. The boneless wiper facilitating fixation of end cap and spring tab combinations as claimed in claim 1, wherein the inner end surface of the ramp shaped protrusion (221) is perpendicular to the axis of the guiding groove (22).