Windshield wiper end buckle and boneless windshield wiper

Abstract

A windshield wiper end buckle is at least provided with a first containing cabin used for receiving a rubber strip base body of a windshield wiper rubber strip, the first containing cabin comprises a pair of longitudinal hooks which are oppositely arranged in the length direction, hook parts of the two longitudinal hooks form a crack, one ends of the two longitudinal hooks form inserting ends for the rubber strip base body to be inserted, and the other ends of the two longitudinal hooks form inserting ends for the rubber strip base body to be inserted. A blocking face used for limiting the rubber strip base body is constructed on the sides, away from the inserting end, of the two longitudinal hooks, the hook parts of the two longitudinal hooks form a flaring part used for pulling or inserting a transverse connecting strip of the rubber strip base body, and through the arrangement of the flaring part, when the windshield wiper is in an assembly state, the transverse connecting strip can be pulled out or inserted into the rubber strip base body. And quick replacement of the windshield wiper rubber strip can be realized without disassembly.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, in particular to a windshield wiper end buckle and a boneless windshield wiper. Background Art

[0002] The industry has revealed an improved structure CN216467686U that facilitates the replacement of wiper rubber strips. Please refer to Figure 1 , including a bearing piece 4, a wiper rubber strip 2 and two end buckles 1', the wiper rubber strip 2 includes a rubber strip base 21 and a wiper lip 22 from top to bottom, the rubber strip base 21 and the wiper lip 22 are connected by a swing bar 23, the rubber strip base 21 is at least provided with mounting grooves 213 on both sides along the width direction, a vertical connecting strip 212 is constructed between the two mounting grooves 213, and a horizontal connecting strip 211 is constructed above the mounting groove 213, the two end buckles 1 ' are respectively located at both ends of the bearing splice 4, and the bearing splice 4 and the two end buckles 1' have a first accommodating groove 42 and a first accommodating chamber 12' for receiving the rubber strip substrate 21 of the wiper rubber strip 2 on the side facing the windshield, and the first accommodating groove 42 and the first accommodating chamber 12' are each composed of at least a pair of longitudinal hooks 421, 121' arranged oppositely along the length direction, and the hook portions of the two longitudinal hooks 421, 121' each form a gap 4 for passing the vertical connecting strip 212 of the wiper rubber strip 2 3, 13', and the hook parts of the two longitudinal hooks 421, 121' are respectively inserted into the corresponding installation grooves 213, and the first accommodating chamber 12' at least forms a closed end for limiting the movement of the wiper rubber strip 2 along the length direction. When the wiper is in an assembled state, there is a spacing X between the first accommodating chamber 12' of at least one end buckle 1' and the first accommodating groove 42 of the supporting contact piece 4 on the opposite side. The spacing X has just enough insertion space, so that when the supporting contact piece 4 and the two end buckles 1' are in an assembled state, the transverse connecting strip 211 of the wiper rubber strip 2 can be inserted into the first accommodating groove 42 through the spacing X, and then inserted into and installed in the two first accommodating chambers 12'. The above-mentioned structural design, using the spacing X, can achieve that when the wiper rubber strip 2 is replaced, there is no need to disassemble the boneless wiper. Only the old wiper rubber strip 2 needs to be taken out through the spacing, and then the new wiper rubber strip 2 is inserted from the spacing X to complete the replacement of the wiper rubber strip 2, which is particularly convenient to use. However, since the supporting piece 4 is a plastic part, as the use time accumulates, the supporting piece 4 ages and its length will shorten, which will increase the original spacing between the supporting piece 4 and the reserved space corresponding to the end buckle 1', causing the wiper strip 2 to be suspended at the spacing, causing the wiper strip to easily form a water line during the scraping process, resulting in unclean scraping. If the spacing is too large, in extreme weather conditions, the wiper strip may detach from the reserved space during the scraping process, posing a safety hazard.

[0003] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content

[0004] The first purpose of the utility model is to provide a wiper end buckle, which can realize the rapid replacement of the wiper rubber strip when the wiper is in an assembled state without disassembly through the setting of the flared portion.

[0005] The second purpose of the utility model is to provide a boneless wiper comprising the above-mentioned wiper end buckle.

[0006] In order to achieve the above-mentioned first purpose, the utility model discloses a wiper end buckle, which has a first accommodating chamber and a second accommodating chamber from bottom to top respectively, the first accommodating chamber is used to receive the rubber strip base of the wiper rubber strip, and it includes a pair of longitudinal hooks arranged opposite to each other along the length direction, the hook portions of the two longitudinal hooks form a gap, one end of the two longitudinal hooks forms an insertion end for inserting the rubber strip base, and the other end constructs a blocking surface for limiting the rubber strip base; at least one clamping portion for clamping the elastic supporting component is arranged in the second accommodating chamber, which is used to receive and fix the elastic supporting component, and the hook portions of the two longitudinal hooks form a flared portion for pulling out / inserting the transverse connecting strip of the rubber strip base.

[0007] By adopting the above design and adding a flared part, it can be achieved that when replacing the wiper strip, there is no need to disassemble the boneless wiper. Only the strip base of the old wiper strip needs to be picked out through the flared part, and then the strip base of the new wiper strip needs to be inserted into the flared part to complete the replacement of the wiper strip. It is particularly convenient to use.

[0008] Furthermore, the length L1 from the blocking surface to the access end of the adjacent flaring portion is 10 mm to 30 mm.

[0009] With such arrangement, when the wiper strip is assembled, the distance between the end of the wiper strip and the blocking surface is generally about 2 mm. In a few cases, the distance will be expanded to 5 mm. However, even if calculated with a distance of 5 mm, the length from the end of the wiper strip to the access end of the flared part is at least greater than or equal to 5 mm, so that the wiper strip is not easy to accidentally detach from the flared part during the wiping process.

[0010] Optionally, the access end on one side of the flared portion adjacent to the blocking surface is in an "eight-shaped" shape with an opening gradually expanding from the blocking surface toward the insertion end. Since the width of the access end opening is gradually expanding from small to large, when the opening width of the access end is small, the end of the rubber strip matrix of the wiper strip cannot be detached from the opening, and can only be taken out by squeezing the end of the rubber strip matrix to a position where the opening width of the access end of the flared portion is larger, thereby increasing the escape distance from the end of the rubber strip matrix to the flared portion.

[0011] Furthermore, the width W1 of the flared portion is greater than or equal to the width W2 of the transverse connecting strip of the rubber strip base.

[0012] Furthermore, a distance L2 of the maximum width W1 of the flared portion along the length direction is ≥2 mm.

[0013] Furthermore, the outer edge of the access end of the flared portion is provided with a guiding slope for facilitating the insertion of the rubber strip substrate.

[0014] The above arrangement facilitates the removal / insertion of the rubber strip substrate from the flared portion, thereby achieving rapid replacement of the wiper rubber strip.

[0015] To achieve the second purpose mentioned above, the utility model discloses a boneless wiper, which is equipped with the wiper end buckle as described above. The boneless wiper made of such end buckle can realize the rapid replacement of the wiper rubber strip without removing the end buckle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The detailed description given as non-limiting examples better explains what the invention consists of and how it can be implemented, and furthermore, this description refers to the accompanying drawings, in which:

[0017] Figure 1 A schematic diagram of the wiper structure disclosed in patent document CN216467686U;

[0018] Figure 2 and Figure 3 This is a three-dimensional schematic diagram of the bottom angle of a wiper end buckle according to an example of the utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the front angle of a wiper end buckle of Example 1 of the utility model;

[0020] Figure 5-1 The utility model is a front view of the bottom surface of the wiper end buckle of Example 1, which is used to reveal the opening shape of the flared portion Example 1;

[0021] Figure 5-2 The utility model is a front view of the bottom surface of the wiper end buckle of Example 1, which is used to reveal the opening shape of the flared portion Example 2;

[0022] Figure 5-3 The utility model is a front view of the bottom surface of the wiper end buckle of Example 1, which is used to reveal the opening shape of the flared portion Example 3;

[0023] Figure 6 This is an exploded schematic diagram of an example of a boneless wiper according to the present utility model;

[0024] Figure 7 This is a schematic diagram of a frameless wiper assembly according to the present invention;

[0025] Figure 8This is a cross-sectional view of a combination of a wiper end buckle, a wiper rubber strip, and an elastic supporting component of Example 1 of the utility model;

[0026] Fig. 9 This is a schematic diagram of the installation of a wiper end buckle and a bearing tab according to an example of the utility model;

[0027] Fig.10 This is a three-dimensional schematic diagram of the bottom angle of the wiper end buckle of Example 2 of the utility model;

[0028] Fig.11 This is a three-dimensional schematic diagram of the front angle of the wiper end buckle of Example 2 of the utility model;

[0029] Fig.12 This is an exploded schematic diagram of a second example of a boneless wiper according to the present utility model;

[0030] Fig.13 This is a schematic diagram of the assembly of the second boneless wiper according to the utility model. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "height", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0034] The "spoiler" and "carrying tab" mentioned in this article are relatively conventional components in the field of boneless wipers. The spoiler adopts an aerodynamic profile, which uses the wind generated by the vehicle speed to exert force to keep the wiper against the windshield. The specific structure of the carrying tab disclosed in this article can refer to the structure of the carrying tab described in CN108657127A. The carrying tab is provided with two corresponding accommodating grooves from top to bottom, which are respectively used to penetrate the elastic support component and the wiper rubber strip; CN103269920A can also be referred to. The wiper strip unit 10 disclosed in this patent document is equivalent to the carrying tab defined in this patent, and the wiper strip unit has a matching portion for penetrating the spoiler (deflector element); at the same time, reference can also be made to the support frame disclosed in CN100564114C and the longitudinal body disclosed in CN104590215A, which are equivalent to the carrying tab defined in this patent, and the carrying tab integrates the spoiler.

[0035] Example 1:

[0036] See also Figures 2 to 4 A wiper end buckle 1a includes a first accommodating compartment 11, a second accommodating compartment 17 and a third accommodating compartment 19 from bottom to top.

[0037] See also Figures 2 to 4 The first accommodating chamber 11 is used to receive the rubber strip matrix 21 of the wiper rubber strip 2. The specific structure of the wiper rubber strip 2 is described in detail in the background technology of the present utility model. The first accommodating chamber 11 includes a pair of longitudinal hooks 12 arranged opposite to each other along the length direction. One end of the two longitudinal hooks 12 forms an insertion end 14 for inserting the rubber strip matrix 21. A blocking surface 15 for limiting the rubber strip matrix 21 is constructed on the side of the two longitudinal hooks 12 away from the insertion end 14. The hook portions of the two longitudinal hooks 12 form a gap 13, and the gap 13 is used to clamp the vertical connection of the wiper rubber strip 2. The connecting strip 212 is provided, and the hook portions of the two longitudinal hooks 12 form a flared portion 16. When the wiper is in an assembled state and the wiper rubber strip 2 needs to be replaced, the flared portion 16 is used for the transverse connecting strip 211 of the rubber strip base 21 to be pulled out / inserted. The flared portion 16 forms a pair of first supporting segments 121 and a pair of second supporting segments 122 along the longitudinal direction of the longitudinal hook 12 from the blocking surface 15 to the insertion end 14. When the rubber strip base 21 of the wiper rubber strip 2 is built into the first accommodating compartment 11, the first supporting segment 121 and the second supporting segment 122 are used to support the end of the rubber strip base 21. Preferably, the width W1 of the flared portion 16 is ≥ the width W2 of the transverse connecting strip 211 of the rubber strip base 21 (see Figure 6 and Figure 7), and the outer edge of the access end 161 of the flared portion 16 is provided with a guiding inclined surface 162 for facilitating the insertion of the rubber strip substrate 21. In fact, the flared portion 16 can be provided with a guiding inclined surface at the access end 161 located at the first support section 121 and the access end located at the second support section 122; preferably, the length L1 from the blocking surface 15 to the access end 161 of the flared portion 16 is 10 mm to 30 mm, so that the wiper rubber strip 2 is not easy to be separated from the flared portion 16 of the end buckle 1a during the wiping process; more preferably, as Figure 5-1 .The access end 161 of the flared portion 16 adjacent to the blocking surface 15 is in an "eight-shaped" shape, so that the length L1 of the first support section 121 gradually increases along the side away from the gap 13. Therefore, when the opening width of the access end 161 is small, the end of the rubber strip matrix 21 of the wiper rubber strip 2 cannot be detached from the opening, and can only be taken out by squeezing the end of the rubber strip matrix 21 to a position where the opening width of the access end 161 of the flared portion 16 is larger, thereby increasing the escape distance from the end of the rubber strip matrix 21 to the flared portion 16, thereby making it more difficult for the rubber strip matrix 21 of the wiper rubber strip 2 to detach from the end buckle 1a. It should be noted that the access end 163 of the flared portion 16 located on the side of the second support section 122 can also be designed to be in an "eight-shaped" shape (such as Figure 5-2 As shown), or the access ends 161, 163 on both sides of the flared portion 16 are arranged in an "eight-shaped" shape (as shown Figure 5-3 As shown), the horizontal projection surface of the flared portion 16 is shaped like a hexagon. At the same time, as described above, guide slopes 162 are configured at the access ends 161 on both sides of the flared portion 16. Without considering the structural strength of the second support section 122, the above design can facilitate the replacement of the rubber strip base 21 of the wiper rubber strip 2.

[0038] Preferably, see Fig. 9 The flared portion 16 is arranged on a side adjacent to the insertion end 14. The so-called "adjacent" here means that a second supporting section 122 is provided between the flared portion 16 and the insertion end 14 of the longitudinal hook 12. When the end of the supporting piece 4 is built into the wiper end buckle 1a, the lower end surface of the supporting piece 4 can be abutted against the end surface of the second supporting section 122 on one side away from the flared portion 16. With such a configuration, after the boneless wiper has been used for a period of time, even if the supporting piece 4 is shortened due to aging, the second supporting section 122 separates the flared portion 16 and the shortened supporting piece 4 by the second supporting section 122, and the distance between the aging-shortened supporting piece 4 and the second supporting section 122 is shorter, so that the wiper rubber strip 2 is not easy to detach, which well solves a series of problems caused by increasing the distance between the reserved space S at the corresponding position of the original supporting piece 4 and the end buckle 1a disclosed in patent document CN216467686U (for specific problems, please refer to the background technology of the present utility model).

[0039] See also Figure 3 , Figure 4 and Figure 8 The second accommodating chamber 17 is arranged above the first accommodating chamber 11, and the second accommodating chamber 17 is used to receive the elastic supporting component 5. The end of the elastic supporting component 5 is provided with at least one notch 51. Correspondingly, at least one locking portion 18 for locking the notch 51 of the elastic supporting component 5 is provided in the second accommodating chamber 17, so that the elastic supporting component 5 is fixed in the second accommodating chamber 17 of the wiper end buckle 1a.

[0040] See also Figure 4 , Figure 6 and Fig. 9 The third accommodating chamber 19 is arranged above the second accommodating chamber 17. The third accommodating chamber 19 is used to accommodate the end of the spoiler 3. The third accommodating chamber 19 at least has a shell that is adapted to the contour of the guide portion of the spoiler 3. The third accommodating chamber 19 formed by the shell covers the end of the spoiler 3, and then the wiper end buckle 1a covers the end of the spoiler 3. In this embodiment, the spoiler 3 and the supporting strip 4 are arranged as one body.

[0041] By adopting the above design and adding the flared portion 16, it is possible to replace the wiper strip 2 without disassembling the boneless wiper. The old wiper strip 2 only needs to be taken out through the flared portion 16 and then the new wiper strip 2 is inserted into the flared portion 16 to complete the replacement of the wiper strip 2, which is particularly convenient to use.

[0042] Example 2:

[0043] See also Figures 10 to 13 The wiper end buckle 1b of this example is basically consistent with the wiper end buckle 1a of Example 1 in structure, except that the wiper end buckle 1b of this example cancels the setting of the third accommodating compartment 19. For this reason, the wiper end buckle 1b of this example is covered by the spoiler 3. Its specific structure can be found in the patent document disclosed in CN108657127A. In this patent document, the guide sleeve constitutes an equivalent technology to the spoiler 3 defined in the utility model.

[0044] The present utility model also discloses a wiper end buckle 1a, 1b using the above two structural forms. The wiper end buckle 1a of Example 1 is mainly suitable for outsourcing the ends of the spoiler 3 and the wiper rubber strip 2, such as the boneless wiper disclosed in CN107444347A. The boneless wiper using this structure is generally equipped with a bearing piece, and the definition of the bearing piece can be referred to the above description; and the boneless wiper made of the wiper end buckle 1b of Example 2, its main structure can be referred to CN108657127A, and the most significant difference from this patent document is the difference in the structure of the wiper end buckles of the two.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wiper end buckle, comprising a first accommodating chamber (11) and a second accommodating chamber (17) from bottom to top, wherein the first accommodating chamber (11) is used to receive a rubber strip substrate (21) of a wiper rubber strip (2), and comprises a pair of longitudinal hooks (12) arranged opposite to each other along the length direction, the hook portions of the two longitudinal hooks (12) forming a clamping gap (13), one end of the two longitudinal hooks (12) forming an insertion end (14) for inserting the rubber strip substrate (21), and the other end forming a blocking surface (15) for limiting the position of the rubber strip substrate (21); at least one locking portion (18) for locking an elastic support component (5) is provided in the second accommodating chamber (17), and the locking portion (18) is used to receive and fix the elastic support component (5), and the characteristics are as follows: The hook portions of the two longitudinal hooks (12) form a flared portion (16) for inserting / pulling the transverse connecting strip (211) of the rubber strip base (21).

2. The wiper end buckle according to claim 1, characterized in that: The flared portion (16) is disposed on a side adjacent to the insertion end (14).

3. The wiper end buckle according to claim 2, characterized in that: The length L1 from the blocking surface (15) to the access end (161) of the adjacent flared portion (16) is 10 mm to 30 mm.

4. The wiper end buckle according to any one of claims 1 to 3, characterized in that: The access end (161) of the flared portion (16) on the side adjacent to the blocking surface (15) is in an "eight-shaped" shape with its opening gradually expanding from the blocking surface (15) toward the insertion end (14).

5. The wiper end buckle according to claim 1, characterized in that: The maximum width W1 of the flared portion (16) is greater than or equal to the width W2 of the transverse connecting strip (211) of the rubber strip base (21).

6. The wiper end buckle according to claim 5, characterized in that: The maximum width W1 of the flared portion (16) has a distance L2 along the length direction of ≥2 mm.

7. The wiper end buckle according to claim 1, characterized in that: The outer edge of the access end (161) on at least one side of the flared portion (16) is provided with a guiding inclined surface (162) for facilitating the insertion of the rubber strip substrate (21).

8. The wiper end buckle according to claim 1, characterized in that: A third accommodating chamber (19) for accommodating the end of the spoiler (3) is also arranged above the second accommodating chamber (17); the third accommodating chamber (19) at least has a shell adapted to the contour of the air guide portion of the spoiler (3); the third accommodating chamber (19) formed by the shell encloses the end of the spoiler (3).

9. A boneless wiper, characterized in that: It is equipped with a wiper end clip (1a, 1b) as claimed in any one of claims 1 to 8.

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