Adapter of windshield wiper and windshield wiper

Abstract

The left side wall and the right side wall of the adapter respectively comprise a first elastic cantilever, the inner side of each first elastic cantilever is provided with a space for the first elastic cantilever to move, and the outer side of each first elastic cantilever is provided with a first clamping block, so that the adapter can be matched with a wiping arm with a clamping hole located in the side wall. The left side wall and the right side wall of the adapter further comprise limiting structures used for preventing the adapter from shaking left and right relative to the scraping arm, the top wall of the adapter comprises a second elastic cantilever, the inner side of the second elastic cantilever is provided with a space for the second elastic cantilever to move, and the outer side of the second elastic cantilever is provided with a second clamping block. The adapter can be matched with the scraping arm with the clamping hole located in the top wall. The adapter not only can be matched with the wiper arm with the clamping hole located in the top wall, but also can be matched with the wiper arm with the clamping hole located in the side wall. The utility model further relates to a windshield wiper which comprises a windshield wiper support assembly, a water wiping rubber strip and the adapter.

Description

Technical Field

[0001] The utility model relates to a windshield wiper, in particular to an adapter capable of adapting to two wiper arm structures. Background Art

[0002] The wiper adapter is a part used to connect the wiper arm and the wiper bracket assembly. There are two types of wiper arm structures. Figure 1-1 and 1-2 The main features of one of the scraper arm structures are demonstrated. The scraper arm 100 has two first clamping holes P1 , which are arranged on two opposite side walls of the scraper arm 100 . Figure 2-1 and 2-2 The main features of another scraper arm structure are demonstrated. The scraper arm 100 ′ has one second engaging hole P1 ′, which is provided on the top wall of the scraper arm 100 ′.

[0003] Currently, there is no adapter that can adapt to both of the above scraper arm structures. For example, patent document CN117068100A describes an adapter structure that only has a limit block (referenced as 27 in the patent document) for cooperating with the first clamping hole P1, but does not have a limit block that can cooperate with the second clamping hole P1'. Therefore, it can only adapt to Figure 1-1 and 1-2 The scraper arm structure shown is not suitable for Figure 2-1 and 2-2 The scraper arm structure shown.

[0004] In order to increase the types of scraper arms that the adapter can adapt to, it is necessary to improve the structure of the existing adapter. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an adapter structure which can adapt to the two scraper arms mentioned above.

[0006] In order to solve this technical problem, the utility model provides a wiper adapter, the left and right side walls of the adapter each include a first elastic cantilever, the inner side of the first elastic cantilever has a space for the first elastic cantilever to move, the outer side of the first elastic cantilever is provided with a first clamping block, so that the adapter can be adapted to the wiper arm with a first clamping hole on the side wall, the left and right side walls of the adapter each also include a limiting structure for preventing the adapter from rocking left and right relative to the wiper arm, the adapter is installed into the wiper arm from front to back along its length direction, the top wall of the adapter has a blocking portion for blocking the wiper arm from moving forward relative to the adapter after the adapter is installed into the wiper arm, the top wall of the adapter includes a second elastic cantilever, the inner side of the second elastic cantilever has a space for the second elastic cantilever to move, the outer side of the second elastic cantilever is provided with a second clamping block, so that the adapter can be adapted to the wiper arm with a second clamping hole on the top wall.

[0007] The adapter provided by the utility model has clamping blocks on both the top wall and the side wall, and the clamping blocks are arranged on the elastic cantilever. Therefore, the adapter can adapt to both the scraper arm with the clamping hole located on the top wall and the scraper arm with the clamping hole located on the side wall.

[0008] In one embodiment, the limiting structure includes a plurality of elastic interference fit parts, and there is space on the inner side of the interference fit parts for the interference fit parts to undergo elastic deformation; the interference fit parts are used to interference fit with the inner side of the side wall of the wiper arm. When the adapter is assembled on the wiper arm, the inner side of the side wall of the wiper arm squeezes the interference fit parts, causing the interference fit parts to undergo elastic deformation.

[0009] By using the elastic interference fit portion as the limiting structure, a tight fit between the adapter and the scraper arm can be achieved relatively easily. In other embodiments, the interference fit portion may not be used.

[0010] In one embodiment, the interference fit portion is an arched structure, which is reliable and not easily damaged. The two ends of the interference fit portion are spaced apart along the length direction of the adapter, so that the adapter can be smoothly installed in the scraper arm.

[0011] In one embodiment, an interference fit portion is provided at the bottom of the adapter sidewall, and the interference fit portions are spaced apart along the length of the adapter. This achieves a good position-limiting effect while maintaining good structural strength for the adapter sidewall. The position-limiting structure also includes a plurality of transition fit portions provided at the top of the adapter sidewall. The transition fit portions are configured to transitionally fit with the inner sidewall of the scraper arm, complementing the interference fit portions and providing excellent stability to the adapter. In other embodiments, the interference fit portions may have other structures and be provided at other locations on the adapter sidewall.

[0012] In one embodiment, the transition fitting portion is a strip-shaped structure, arranged along the length of the adapter. The transition fitting portions are spaced apart along the length of the adapter. While ensuring a retaining effect, the contact area between the transition fitting portion and the scraper arm is reduced, making it easier to install the adapter into the scraper arm. In other embodiments, the transition fitting portion can also have other structures, such as a disc-shaped structure.

[0013] In one embodiment, the rear portions of the left and right side walls form guide surfaces with gradually decreasing widths from front to back, and the guide surfaces serve as a guide for installing the adapter into the scraper arm.

[0014] In one embodiment, the top surface of the second clamping block forms a gradually decreasing slope from front to back, and the slope guides the second clamping block of the adapter to be installed into the second clamping hole on the top of the scraper arm.

[0015] The present invention also provides a windshield wiper comprising a wiper bracket assembly, a wiper rubber strip, and an adapter provided by the present invention. A windshield wiper using the adapter provided by the present invention can be adapted to a wiper arm having a second engaging hole on the top wall, or a wiper arm having first engaging holes on both side walls. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1-1 and 1-2 They are three-dimensional views of a scraper arm from different perspectives;

[0017] Figure 2-1 and 2-2 They are three-dimensional views of another type of scraper arm from different perspectives;

[0018] Figure 3-1 and 3-2 They are three-dimensional views of the adapter of the first embodiment of the present utility model from different viewing angles;

[0019] Figure 4-1 and 4-2 They are Figure 3-1 A and B views of the adapter shown;

[0020] Figure 5-1 and 5-2 They are Figure 3-1 Adapter shown fitted to Figure 1-1 Stereoscopic views of the scraper arm from different perspectives;

[0021] Figure 6-1 and 6-2 They are Figure 3-1 Adapter shown fitted to Figure 2-1 Stereoscopic views of the scraper arm from different perspectives are shown. DETAILED DESCRIPTION

[0022] In this specification, the relative position relationship of "front" and "rear" corresponds to the distance between the adapter and the power end of the driving arm, "front" is located on the side away from the power end of the driving arm, and "rear" is located on the side close to the power end of the driving arm. For ease of understanding, the relative positions of "front" and "rear" involved in the present invention are consistent with the directions marked in the drawings of the specification.

[0023] Definition of the wiper bracket assembly. Ordinary technicians in this field know that the wiper bracket assembly at least has a wiper bracket, a wiper strip and a matching part arranged in the middle of the wiper bracket for pivotally connecting with the pivot connection part of the adapter. The wiper bracket can be a bone bracket or a boneless bracket composed of shrapnel, or a hybrid bracket composed of a bone bracket and shrapnel. The bottom of the wiper bracket is directly or indirectly fixed with a wiper strip. The wiper bracket is used to transmit the pushing force applied to the wiper strip to drive it to swing back and forth, and ensure that the wiper strip is close to the windshield of the vehicle. Generally, the bone wiper bracket does not have a guide cover, while the boneless bracket has a guide cover, which is arranged above the wiper strip. Example 1

[0024] See also Figure 3-1 and 3-2 , an adapter 10, comprising a top wall 1 and two side walls 2, the two side walls 2 being symmetrically arranged on both sides of the top wall 1, the adapter 10 is also provided with a pivot connection portion 24, the pivot connection portion 24 being arranged in the space enclosed by the top wall 1 and the two side walls 2, and a pivot connection with a wiper bracket assembly (not shown) is realized through the pivot connection portion 24. The specific structure of the pivot connection portion 24 can be referred to the description in patent document CN117068100A. Of course, this is only one specific manifestation of the pivot connection portion. Ordinary technicians in this field can realize the pivot connection between the adapter 10 and the wiper bracket assembly by arranging a boss or a pivot shaft at the corresponding position of the inner cavity of the adapter 10 (swinging clockwise or counterclockwise with a central axis as the swing fulcrum); the side wall 2 includes a first elastic cantilever 21, the inner side of the first elastic cantilever 21 has a space for the first elastic cantilever 21 to move, and the outer side of the first elastic cantilever 21 is provided with a first clamping block 211. The top wall 1 includes a second elastic cantilever 11 . A space is defined inside the second elastic cantilever 11 for the second elastic cantilever 11 to move. A second clamping block 111 is defined outside the second elastic cantilever 11 .

[0025] See also Figure 5-1 When the adapter 10 is assembled on the scraper arm 100, the first clamping block 211 is clamped in the first clamping hole P1 of the scraper arm 100, and the second clamping block 111 is pressed by the top wall of the scraper arm 100, and the second elastic cantilever 11 is retracted. Figure 6-1 When the adapter 10 is assembled on the scraper arm 100 ′, the second clamping block 111 is clamped in the second clamping hole P1 ′ of the scraper arm 100 ′, the first clamping block 211 is pressed by the side wall of the scraper arm 100 , and the first elastic cantilever 21 is retracted.

[0026] See also Figure 4-2, the adapter 10 is installed into the scraper arm from front to back along its length direction L, and the top surface of the second clamping block 111 forms a gradually lower inclined surface S1 from front to back. When the second clamping block 111 of the adapter is installed into the second clamping hole P1' at the top of the scraper arm, the inclined surface S1 helps the second elastic cantilever 11 to retract inward (produce a downward position offset), and at the same time, the fixed end of the second elastic cantilever 11 is set behind the second clamping block 111. When the scraper arm is in working condition, the adapter 10 will generate an outward centrifugal force relative to the scraper arm. At this time, the front end surface of the second clamping block 111 of the adapter 10 and the front end wall of the second clamping hole P1' of the scraper arm are pressed against each other, and the force direction is toward the fixed end of the second elastic cantilever 11. Compared with setting the fixed end of the second elastic cantilever 11 at the front end of the second clamping block 111, the second clamping block 111 of the former is less likely to be squeezed and produce position offset when subjected to force, thereby ensuring a stable connection between the adapter 10 and the scraper arm. Figure 4-1 The rear end surface S2 of the first clamping block 211 is a sideways and rearwardly inclined surface, which guides the adapter 10 when it is inserted into the scraper arm and also helps the first elastic cantilever 21 to retract (displace inward). A blocking portion 12 is provided on the front portion of the upper side of the top wall 1 to prevent the adapter 10 from moving forward relative to the scraper arm after it is installed.

[0027] The side wall 2 of the adapter 10 also includes a limiting structure for preventing the adapter 10 from rocking left and right relative to the scraper arm. The limiting structure includes two interference fit portions 22 and two transition fit portions 23. Figure 4-1 , the interference fit portion 22 protrudes outward more than the transition fit portion 23 .

[0028] The interference fit portion 22 is elastic and has space on the inside for elastic deformation. When the adapter 10 is assembled on the scraper arm, the interference fit portion 22 is interference fit with the inner side of the scraper arm side wall. The inner side of the scraper arm side wall squeezes the interference fit portion 22, causing the interference fit portion 22 to undergo elastic deformation, thereby achieving a tight fit between the adapter 10 and the scraper arm and preventing the adapter 10 from shaking left and right relative to the scraper arm.

[0029] The interference fit portion 22 is an arched structure, and both ends of the interference fit portion 22 are spaced apart along the length direction L of the adapter 10 to prevent the interference fit portion 22 from obstructing the disassembly and assembly of the adapter 10 and also to prevent the interference fit portion 22 from being damaged when disassembling and assembling the adapter 10.

[0030] An interference fit portion 22 is provided at the bottom (i.e., the lowest portion) of the side wall 2 of the adapter 10. Interference fit portions 22 are spaced apart along the length L of the adapter 10. To further prevent the adapter 10 from rocking relative to the scraper arm, a transition fit portion 23 is provided at the top (i.e., the uppermost portion) of the side wall 2 of the adapter 10. Compared to the interference fit portion 22, the transition fit portion 23 has negligible elasticity. When the adapter 10 is assembled on the scraper arm, the transition fit portion 23 forms a transition fit with the inner side wall of the scraper arm.

[0031] The transition fitting portion 23 is a strip-shaped structure, which can be regarded as a rigid structure without elastic deformation (ignoring some tiny plastic deformation produced by the material itself). It is arranged along the length direction L of the adapter 10, and the size of the transition fitting portion 23 along the height direction H of the adapter 10 is relatively small (approximately 1 / 4 of the size of the transition fitting portion 23 along the length direction L of the adapter 10). Each transition fitting portion 23 is arranged at intervals along the length direction L of the adapter 10, which can reduce the difficulty of installing the adapter 10 into the scraper arm when the transition fitting portion 23 protrudes outward more. At the same time, due to the small size of the transition fitting portion 23, its dimensional accuracy is easier to control.

[0032] See also Figure 4-1 The rear part of the left and right side walls 2 forms a guide surface 25 with a gradually narrowing width from front to back. The guide surface 25 guides the adapter 10 to be installed into the scraper arm, making it easier to install the adapter 10 into the scraper arm.

[0033] See also Figure 5-2 and 6-2 After the adapter 10 is installed in the scraper arm 100 (100'), the limiting parts M1 and M2 at the bottom of the side wall of the scraper arm 100 and the limiting parts M1' and M2' at the bottom of the side wall of the scraper arm 100' contact the bottom surfaces of the left and right side walls 2, and the side wall 2 of the adapter 10 is limited between the inner side of the top wall of the scraper arm 100 (100') and the limiting parts M1 and M2 (M1' and M2'), thereby realizing the limitation of the adapter 10 and the scraper arm 100 (100') in the height direction.

[0034] So far, the improvements of the adapter of this embodiment compared to the existing adapter have been described in detail. Those skilled in the art should be able to implement the present invention based on the above description and related drawings, combined with their understanding of existing adapters. Example 2

[0035] A windshield wiper comprises a wiper bracket assembly, a wiper strip and an adapter according to embodiment 1. The wiper strip is mounted on the wiper bracket assembly. The adapter is used to connect the wiper bracket assembly and the wiper arm. The specific structures of the wiper bracket assembly and the wiper strip can refer to various existing windshield wipers.

[0036] The above embodiments and illustrations do not limit the product form and style of the present invention. Any appropriate changes and modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A wiper adapter, wherein the left and right side walls (2) of the adapter each include a first elastic cantilever (21), the inner side of the first elastic cantilever (21) has a space for the first elastic cantilever (21) to move, the outer side of the first elastic cantilever (21) is provided with a first clamping block (211), so that the adapter can be adapted to a wiper arm having a first clamping hole (P1) provided on the side wall, the left and right side walls (2) of the adapter each also include a limiting structure for preventing the adapter from rocking left and right relative to the wiper arm, the adapter is installed in the wiper arm from front to back along the length direction (L) thereof, and the front portion of the adapter is provided with a blocking portion (12) for limiting the forward movement of the wiper arm relative to the adapter, characterized in that: The top wall (1) of the adapter comprises a second elastic cantilever (11), the inner side of the second elastic cantilever (11) has a space for the second elastic cantilever (11) to move, and the outer side of the second elastic cantilever (11) is provided with a second clamping block (111), so that the adapter can be adapted to a scraper arm provided with a second clamping hole (P1') on the top wall.

2. The adapter according to claim 1, wherein: The limiting structure comprises a plurality of elastic interference fit portions (22), the inner side of each interference fit portion (22) having a space for the interference fit portion (22) to undergo elastic deformation; the interference fit portion (22) is used to perform interference fit with the inner side of the side wall of the scraper arm; when the adapter is assembled on the scraper arm, the inner side of the side wall of the scraper arm squeezes the interference fit portion (22), causing the interference fit portion (22) to undergo elastic deformation.

3. The adapter according to claim 2, wherein: The interference fit portion (22) is an arched structure, and two ends of the interference fit portion (22) are spaced apart along the length direction (L) of the adapter.

4. The adapter according to claim 3, wherein: The interference fit portion (22) is provided at the bottom of the adapter side wall (2), and the interference fit portions (22) are spaced apart along the length direction (L) of the adapter; the limiting structure further comprises a plurality of transition fit portions (23), the transition fit portions (23) being provided at the top of the adapter side wall (2), and the transition fit portions (23) being used for transition fit with the inner side of the scraper arm side wall.

5. The adapter according to claim 4, wherein: The transition fitting portion (23) is a strip-shaped structure and is arranged along the length direction (L) of the adapter, and each transition fitting portion (23) is arranged at intervals along the length direction (L) of the adapter.

6. The adapter according to claim 1, wherein: The rear portions of the left and right side walls (2) form a guide surface (25) with a gradually decreasing width from front to back, and the guide surface (25) serves as a guide for installing the adapter into the scraper arm.

7. The adapter according to claim 1, wherein: The top surface of the second clamping block (111) forms a gradually decreasing inclined surface (S1) from front to back, and the inclined surface (S1) guides the second clamping block (111) of the adapter to be installed into the second clamping hole (P1') at the top of the scraper arm.

8. The adapter according to claim 1, wherein: The fixed end of the second elastic cantilever (11) is arranged behind the second clamping block (111).

9. A windshield wiper, comprising a wiper bracket assembly and a wiper rubber strip, characterized in that: Also included is an adapter as claimed in any one of claims 1 to 8.

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