Windscreen wiper structure

Abstract

The utility model relates to a windscreen wiper structure which comprises a windscreen wiper arm, a steel sheet and a wiper strip which are made of materials prone to deformation, the windscreen wiper arm comprises an installation cavity for the steel sheet and the wiper strip to be placed in, the wiper strip is located below the steel sheet and fixed to the windscreen wiper arm, the windscreen wiper structure further comprises a protection plate, and the protection plate is located between the steel sheet and the wiper strip. The upper end face of the steel sheet abuts against the inner wall of the wiper arm, the lower end face of the steel sheet abuts against the upper end face of the protection plate, the wiper arm comprises cover plates located on the two transverse sides of the installation cavity, the inner side of each cover plate is detachably connected with the wiper arm, and the bottom of each cover plate is detachably connected with the wiper strip. According to the windscreen wiper structure, after the steel sheet is installed in the windscreen wiper arm, the two longitudinal sides of the steel sheet are limited, the steel sheet can be stably located in the windscreen wiper arm, and the situation that the steel sheet falls off is reduced.

Description

Technical Field

[0001] This utility model relates to windshield wipers, and more particularly to a windshield wiper structure. Background Technology

[0002] Windshield wipers are devices on cars and other vehicles used to clear rainwater, snow, or dust from the windshield to ensure the driver has a clear view. They mainly consist of a wiper arm, a wiper blade located on the wiper arm that slides along the glass surface to clear water and dirt, and a drive mechanism that is linked to the wiper arm to move the wiper arm.

[0003] The wiper arm contains a steel sheet, which provides the necessary rigidity to reduce the possibility of bending during use. It also serves as a mounting support for the rubber wiper blade, ensuring that the blade is stably positioned on the wiper arm. However, the steel sheet is prone to deformation during the manufacturing and use processes, and the connection between the joint and the steel sheet can become loose. This can lead to the steel sheet colliding with the joint, causing abnormal noises or even detachment, which can affect vehicle safety. Therefore, how to ensure that the steel sheet and the wiper blade are stably positioned on the wiper arm during assembly has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wiper structure in which the steel sheet is limited on both sides of the longitudinal direction after being installed in the wiper arm, so as to be stably located in the wiper arm and reduce the occurrence of the steel sheet falling off.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a wiper arm, a steel blade, and a wiper strip made of a material prone to deformation. The wiper arm includes an installation cavity for inserting the steel blade and the wiper strip. The wiper strip is located below the steel blade and fixed to the wiper arm. It also includes a protective plate located between the steel blade and the wiper strip. The upper end face of the steel blade abuts against the inner wall of the wiper arm, and the lower end face of the steel blade abuts against the upper end face of the protective plate. The wiper arm includes cover plates located on both sides of the installation cavity. The inner side of each cover plate is detachably connected to the wiper arm, and its bottom is detachably connected to the wiper strip.

[0006] The present invention is further configured such that: a connector is fixedly installed on the top of the steel sheet, and an installation groove is provided above the installation cavity of the wiper arm, the installation groove and the installation cavity are interconnected, and the connector is located in the installation groove and abuts against the wiper arm on both sides in the lateral direction.

[0007] The present invention is further configured such that: each of the cover plates is provided with an upper crossbeam and a lower crossbeam facing inward; the steel sheet and the guard plate are both located between the upper crossbeam and the lower crossbeam; and the upper end face of the steel sheet abuts against the lower end face of the upper crossbeam; and the guard plate is located on the lower crossbeam.

[0008] The present invention is further configured to include a number of connecting posts fixedly installed on the wiper arm and a number of mating rings equal to the number of connecting posts, wherein each connecting post is fitted with a cover plate and threadedly engages with the corresponding mating ring.

[0009] The present invention is further configured such that: the steel sheet protrudes downward with a plurality of positioning plates, the guard plate protrudes downward with a plurality of positioning seats, each positioning seat is provided with a scraper, each positioning seat is provided with a positioning groove for the positioning plate to be inserted, and each positioning seat is provided with a scraper.

[0010] The present invention is further configured such that: the wiper blade includes, from top to bottom, an installation section, a positioning section and a working section, the shape and size of the installation section are adapted to the installation cavity, and the positioning section is located below the installation cavity and abuts against the bottom surface of the wiper arm.

[0011] The present invention is further configured such that: the positioning segment is provided with an upwardly protruding mounting post made of a material that is prone to deformation at each of its apex corners; the cover plate is provided with a mounting slot corresponding to each mounting post; the mounting post includes a fixing segment in the middle and an upper connecting segment and a lower connecting segment located on both sides of the longitudinal direction of the fixing segment; the diameter of the fixing segment is larger than that of the upper connecting segment and the lower connecting segment; and each mounting slot includes an upper connecting position, a lower connecting position, and a fixing position located between the upper connecting position and the lower connecting position.

[0012] By adopting the above technical solution, since the guard plate is located between the steel sheet and the wiper blade, if the objects inside the wiper arm become loose after assembly, the steel sheet, limited by the guard plate, will not fall directly out of the mounting cavity and thus loosen the glass. At the same time, after assembly, the upper end of the steel sheet will abut against the inner wall of the wiper arm and the lower end will abut against the guard plate. Therefore, the steel sheet can be stably limited by the longitudinal direction of the wiper arm and the guard plate and thus stably located inside the wiper arm. Since each cover plate is detachable from the wiper arm and the bottom of each cover plate is detachable from the wiper blade, if the wiper blade wears or ages during the use of the wiper arm, resulting in a decrease in cleaning effect and requiring a new wiper blade, the wiper blade can be easily removed by removing the cover plates on both sides. When the wiper blade is installed on the wiper arm, since the wiper blade is connected to the cover plates on both sides of the wiper arm, the wiper blade can be stably located inside the wiper arm when the wiper arm swings to clean the windshield. Attached Figure Description

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a perspective view of a specific embodiment of the present utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a perspective view of the cover plate after it has been separated from the wiper arm in this utility model;

[0017] Figure 4 This is a cross-sectional view of the present invention under an explosive state;

[0018] Figure 5 for Figure 4 A magnified view of A in the middle.

[0019] In the diagram: 1-wiper arm, 11-mounting cavity, 12-cover plate, 121-upper crossbeam, 122-lower crossbeam, 123-mounting slot, 1231-upper connection position, 1232-lower connection position, 1233-fixed position, 13-mounting groove;

[0020] 2-Steel sheet, 21-Connector, 22-Positioning plate;

[0021] 3-Scraper strip, 31-Installation section, 32-Positioning section, 321-Installation column, 3211-Upper connecting section, 3212-Lower connecting section, 3213-Fixing section, 33-Working section;

[0022] 4-Guard plate, 41-Positioning seat, 411-Positioning groove;

[0023] 5-Connecting post;

[0024] 6-Matching ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-5As shown, this utility model discloses a wiper structure, including a wiper arm 1, a steel blade 2, and a wiper strip 3 made of a material that is easily deformable, such as rubber. The wiper arm 1 includes an installation cavity 11 for inserting the steel blade 2 and the wiper strip 3. The wiper strip 3 is located below the steel blade 2 and is fixed to the wiper arm 1 by means of fastening or other methods. It also includes a guard plate 4, which is located between the steel blade 2 and the wiper strip 3. The upper end face of the steel blade 2 abuts against the inner wall of the wiper arm 1, and the lower end face of the steel blade 2 abuts against the upper end face of the guard plate 4. The wiper arm 1 includes cover plates 12 located on both sides of the installation cavity 11. The inner side of each cover plate 12 is detachably connected to the wiper arm 1 by bolts or other methods, and the bottom is detachably connected to the wiper strip 3 by fastening or other methods. Since the guard plate 4 is located between the steel blade 2 and the wiper strip 3, if any object inside the wiper arm 1 becomes loose after assembly, it will be limited by the guard plate 4. The steel sheet 2 is difficult to fall directly from the mounting cavity 11 out of the wiper arm 1 and thus loosen the glass. At the same time, after the assembly is completed, the upper end of the steel sheet 2 will abut against the inner wall of the wiper arm 1 and the lower end will abut against the guard plate 4. Therefore, the steel sheet 2 can be stably fixed in the wiper arm 1 by the longitudinal limitation of the wiper arm 1 and the guard plate 4. Since each cover plate 12 is detachable from the wiper arm 1 and the bottom of each cover plate 12 is detachable from the wiper blade 3, if the wiper blade 3 is worn or aged during the use of the wiper arm 1, resulting in a decrease in cleaning effect and the need for a new wiper blade 3, the wiper blade 3 can be easily removed by removing the cover plates 12 on both sides. When the wiper blade 3 is installed on the wiper arm 1, since the wiper blade 3 is connected to the cover plates 12 on both sides of the wiper arm 1, the wiper blade 3 can be stably fixed in the wiper arm 1 when the wiper arm 1 swings to clean the windshield.

[0027] The steel sheet 2 is fixedly mounted with a connector 21 by welding or other means. The wiper arm 1 is provided with a mounting groove 13 above the mounting cavity 11. The mounting groove 13 is connected to the mounting cavity 11. The connector 21 is located in the mounting groove 13 and abuts against the wiper arm 1 on both sides. Since the shape and size of the part of the steel sheet 2 below the connector 21 are adapted to the mounting cavity 11, the steel sheet 2 can only be inserted into the wiper arm 1 from bottom to top and cannot be inserted from top to bottom. Since the connector 21 is inserted into the mounting groove 13 of the wiper arm 1 and abuts against the wiper arm 1 on both sides, after the steel sheet 2 and the connector 21 are installed into the wiper arm 1, the connector 21 cannot move because it is limited by the wiper arm 1 on both sides. At this time, the steel sheet 2 also cannot move laterally in the mounting cavity 11, thus determining the relative position of the steel sheet 2 and the wiper arm 1.

[0028] Preferably, each of the cover plates 12 is provided with an upper crossbeam 121 and a lower crossbeam 122 facing inward. The steel sheet 2 and the guard plate 4 are both located between the upper crossbeam 121 and the lower crossbeam 122, with the upper end face of the steel sheet 2 abutting against the lower end face of the upper crossbeam 121. The guard plate 4 is located on the lower crossbeam 122. After the steel sheet 2 and the guard plate 4 are installed into the mounting cavity 11 of the wiper arm 1, the cover plates 12 are then installed on the transverse sides of the wiper arm 1. At this time, the steel sheet 2 and the guard plate 4 are positioned in a manner that is not directly related to the main structure of the wiper arm 1. The lateral sides of plate 4 will be located between the upper crossbeam 121 and the lower crossbeam 122 of cover plate 12. This ensures that when connector 21 is installed in mounting groove 13, the lateral sides of steel plate 2 are restricted and will not shake randomly. Steel plate 2 and guard plate 4 cannot go up over the upper crossbeam 121 or down over the lower crossbeam 122, thus being stably located between the upper crossbeam 121 and the lower crossbeam 122. This determines the position of steel plate 2 and guard plate 4 in the longitudinal direction within mounting cavity 11.

[0029] The system also includes several connecting posts 5 fixedly installed on the wiper arm 1 and a number of mating rings 6 equal to the number of connecting posts 5. Each connecting post 5 is fitted with a cover plate 12 and threadedly engaged with the corresponding mating ring 6. When it is necessary to fix the cover plate 12 to the wiper arm 1, the relative position of the cover plate 12 and the wiper arm 1 can be determined by inserting the cover plate 12 into each connecting post 5, which facilitates the installation of each mating ring 6. After each mating ring 6 is threadedly engaged with the corresponding connecting post 5, the connection between the cover plate 12 and the wiper arm 1 can be completed, so that the cover plate 12 can be stably located on both sides of the wiper arm 1 without the action of external force.

[0030] Preferably, the steel sheet 2 has several positioning plates 22 protruding downwards, and the guard plate 4 has several positioning seats 41 protruding downwards. Each positioning seat 41 is fitted with a scraper 3, and each positioning seat 41 is provided with a positioning groove 411 for the positioning plates 22 to be inserted. After the steel sheet 2 and the guard plate 4 are installed into the mounting cavity 11, the positioning plates 22 of the steel sheet 2 will be inserted into the positioning grooves 411 on the corresponding positioning seats 41 of the guard plate 4, so that the steel sheet 2 can be stably connected with the guard plate 4. Since each positioning seat 41 is fitted with a scraper 3, each positioning seat 41 can support the scraper 3 installed on the wiper arm 1 and prevent the scraper 3 from moving laterally relative to the wiper arm 1, thus determining the relative position of the two.

[0031] Furthermore, the wiper blade 3 includes, from top to bottom, an installation section 31, a positioning section 32, and a working section 33. The shape and size of the installation section 31 are adapted to the installation cavity 11. The positioning section 32 is located below the installation cavity 11 and abuts against the bottom surface of the wiper arm 1. Since the positioning section 32 is located below the installation cavity 11 and abuts against the bottom surface of the wiper arm 1, after the wiper blade 3 is installed into the installation cavity 11, the positioning section 32 of the wiper blade 3 will abut against the wiper arm 1, thus preventing the wiper blade 3 from moving upwards and facilitating the detachable connection between the wiper blade 3 and each cover plate 12.

[0032] The positioning section 32 has upward-protruding mounting posts 321 made of easily deformable materials such as rubber at each of its apex corners. The cover plate 12 has mounting slots 123 corresponding to each mounting post 321. Each mounting post 321 includes a central fixing section 3213, mounting posts 3211 on both longitudinal sides of the fixing section 3213, and a lower connecting section 3212. The diameter of the fixing section 3213 is larger than that of the mounting posts 3211 and the lower connecting section 3212. Each mounting slot 123 includes an upper connecting position 1231, a lower connecting position 1232, and a fixing position 1233 between the upper connecting position 1231 and the lower connecting position 1232. During the process of inserting the scraper 3 into the mounting cavity 11, when the mounting posts 321 on the positioning section 32 of the scraper 3 are inserted into the cover plate 12, the mounting posts 321... 3211 will first be inserted into the corresponding mounting slot 123 and then sequentially enter the lower connection position 1232, the fixing position 1233 and the upper connection position 1231. When the diameter of each mounting post 321 is larger than that of the mounting post 3211 and the fixing section 3213 of the lower connection section 3212, the fixing section 3213 needs to forcibly pass through the lower connection position 1232 and enter the fixing position 1233, so that the scraper 3 after assembly without external force can be stably connected to the cover plate 12. When it is necessary to separate the scraper 3 from the cover plate 12, by applying a downward force to the scraper 3, the mounting posts 321 on the scraper 3 will face downward, so that the fixing sections 3213 can forcibly face downward and pass through the lower connection position 1232 and separate from the corresponding mounting slot 123, thus separating the scraper 3 from the cover plate 12 and removing it.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A windshield wiper structure, comprising a wiper arm, a steel blade, and a wiper strip made of a material prone to deformation, wherein the wiper arm includes a mounting cavity for inserting the steel blade and the wiper strip, and the wiper strip is located below the steel blade and fixed to the wiper arm, characterized in that: It also includes a guard plate located between the steel sheet and the wiper blade. The upper end face of the steel sheet abuts against the inner wall of the wiper arm, and the lower end face of the steel sheet abuts against the upper end face of the guard plate. The wiper arm includes cover plates located on both sides of the mounting cavity. The inner side of each cover plate is detachably connected to the wiper arm, and the bottom is detachably connected to the wiper blade.

2. The wiper structure according to claim 1, characterized in that: A connector is fixedly installed on the top of the steel sheet. The wiper arm is provided with a mounting groove above the mounting cavity. The mounting groove and the mounting cavity are interconnected. The connector is located in the mounting groove and abuts against the wiper arm on both sides.

3. A wiper structure according to claim 2, characterized in that: Each of the aforementioned cover plates is provided with an upper crossbeam and a lower crossbeam facing inwards. The steel sheet and the guard plate are both located between the upper crossbeam and the lower crossbeam, with the upper end face of the steel sheet abutting against the lower end face of the upper crossbeam, and the guard plate located on the lower crossbeam.

4. A wiper structure according to claim 3, characterized in that: It also includes several connecting posts fixedly installed on the wiper arm and the same number of mating rings as the connecting posts. Each connecting post is fitted with a cover plate and threadedly engages with the corresponding mating ring.

5. A wiper structure according to claim 3, characterized in that: The steel sheet has several positioning plates protruding downwards, and the guard plate has several positioning seats protruding downwards. Each positioning seat has a scraper inserted into it, and each positioning seat has a positioning groove for the positioning plate to be inserted into it. Each positioning seat also has a scraper inserted into it.

6. A wiper structure according to claim 1, characterized in that: The wiper blade comprises, from top to bottom, an installation section, a positioning section, and a working section. The shape and size of the installation section are adapted to the installation cavity, and the positioning section is located below the installation cavity and abuts against the bottom surface of the wiper arm.

7. A wiper structure according to claim 6, characterized in that: The positioning section has mounting posts made of a material that is prone to deformation protruding upwards at each of its apex corners. The cover plate is provided with mounting slots corresponding to each mounting post. Each mounting post includes a fixing section in the middle and an upper connecting section and a lower connecting section located on both sides of the longitudinal direction of the fixing section. The diameter of the fixing section is larger than that of the upper connecting section and the lower connecting section. Each mounting slot includes an upper connecting position, a lower connecting position, and a fixing position located between the upper connecting position and the lower connecting position.

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