Secondary locking structure for high-speed scraping arm and outer cover

Abstract

The utility model discloses a secondary locking structure for a high-speed wiper arm and an outer cover, which comprises a wiper blade, a wiper blade fixing seat for fixing the wiper blade and the outer cover mounted on the wiper arm, the outer cover is provided with a windward side and a leeward side, and the windward side is an inclined surface; the cross section of the end, matched with the outer cover, of the wiper arm is in a U shape, a vertical wall is further arranged in the outer cover, the vertical wall, the leeward side and part of the windward side form a U shape, and the windscreen wiper is characterized in that at least one check block is arranged on the wiper blade fixing base so as to block the vertical wall of the outer cover and prevent the vertical wall from deforming outwards to be separated from the wiper arm. According to the utility model, the swinging phenomenon can be reduced, and the wiper arm, the outer cover and the wiper blade fixing seat can be prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of windshield wipers, and particularly to a secondary locking structure for a high-speed wiper arm and an outer cover. Background Art

[0002] To improve the high-speed performance of the wiper blade, some manufacturers on the market have changed the wiper blade connector (the outer cover described later) into an inclined surface form. That is, the windward surface is changed into an inclined surface, which can increase the downward pressure of the high-speed airflow on the wiper blade.

[0003] Most manufacturers on the market insert the wiper arm into the wiper blade connector. Due to the space limitation of the inclined surface, the insertion end of the wiper rod usually has to be cut very narrow, resulting in generally low stiffness of the wiper arm. At the same time, because the wiper arm cooperates with the wiper blade connector, and the wiper blade connector cooperates with the wiper blade fixing seat. The accumulated clearance of the two fits usually causes too large a clearance between the wiper blade connector and the wiper arm, resulting in a swinging phenomenon. In addition, there is also a risk of the outer cover and the wiper arm coming off. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a secondary locking structure for a high-speed wiper arm and an outer cover that reduces the risk of the outer cover and the wiper arm coming off in view of the above-mentioned deficiencies of the prior art.

[0005] The technical problem to be solved by the utility model can be realized by the following technical solutions:

[0006] A secondary locking structure for a high-speed wiper arm and an outer cover, including a wiper blade, a wiper blade fixing seat for fixing the wiper blade, and an outer cover installed on the wiper arm. The outer cover has a windward surface and a leeward surface, and the windward surface is an inclined surface; one end of the wiper arm that cooperates with the outer cover has a U-shaped cross-section. A vertical wall is further provided inside the outer cover. The vertical wall and the leeward surface and part of the windward surface form a U shape. It is characterized in that at least one stop block is provided on the wiper blade fixing seat to block a vertical wall of the outer cover and prevent the vertical wall from deforming outward and coming off the wiper arm.

[0007] In a preferred embodiment of the utility model, snap structures are provided on both the vertical wall and the leeward surface for buckling the wiper arm to complete the fixation of the outer cover and the wiper arm.

[0008] In a preferred embodiment of the utility model, an elastic arm is provided on the wiper blade fixing seat, and a groove is provided on the windward surface of the outer cover. The elastic arm is embedded in the groove.

[0009] In a preferred embodiment of the utility model, first opening grooves are respectively provided on a pair of side walls at one end of the wiper arm that cooperates with the outer cover and has a U-shaped cross-section. The two first opening grooves are clamped on the shaft of the wiper blade fixing seat, so that the wiper arm is hinged to the fixing seat.

[0010] In a preferred embodiment of the present utility model, a second opening groove is provided on the side wall of the end where the scraping arm and the outer cover cooperate with a U-shaped cross section facing the vertical wall. A protrusion is provided on the scraping blade fixing seat, and the protrusion is embedded in the second opening groove to prevent the scraping arm from disengaging from the scraping blade fixing seat.

[0011] In a preferred embodiment of the present utility model, the protrusion is arc-shaped, and the second opening groove is an arc-shaped groove adapted to the protrusion.

[0012] Due to the adoption of the above technical solution, the present utility model uses the shaft and the protrusion on the scraping blade fixing seat to cooperate with the first opening groove and the second opening groove on the scraping arm to prevent the scraping arm from disengaging in the length direction of the scraping blade. At the same time, the stopper on the scraping blade fixing seat cooperates with the scraping arm to jointly clamp the vertical wall on the outer cover, restricting the crosstalk of the outer cover in the direction perpendicular to the length of the scraping blade. In addition, through the cooperation of the elastic arm on the scraping blade fixing seat and the groove on the outer cover, the movement of the outer cover in the length direction of the scraping blade is locked. It is necessary to manually unlock the elastic arm and withdraw from the groove on the outer cover before the scraping arm and the outer cover can be disassembled from the scraping blade fixing seat. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the high-speed scraping arm of the present utility model.

[0014] Figure 2 It is an assembly schematic diagram of the scraping arm and the scraping blade fixing seat of the present utility model.

[0015] Figure 3 It is Figure 1 An enlarged schematic diagram of part I. Detailed Embodiment

[0016] The present utility model will be further described below in conjunction with the drawings and the detailed embodiment.

[0017] Refer to Figures 1 to 3 , a secondary locking structure of a high-speed scraping arm and an outer cover shown in the figure includes a scraping blade 10, a scraping blade fixing seat 20 for fixing the scraping blade 10, an outer cover 30 installed on the scraping blade fixing seat 20, and a scraping arm 40.

[0018] The outer cover 30 has a windward surface 31 and a leeward surface 33. The windward surface 31 is an inclined surface, and the cross section of the end 41 where the scraping arm 40 cooperates with the outer cover 30 is U-shaped.

[0019] On both side surfaces 21 of the scraping blade fixing seat 20, a shaft 22 is respectively provided, and a protrusion 23 is provided on one side surface 21 of the scraping blade fixing seat 20. The protrusion 23 is arc-shaped.

[0020] On a pair of side walls 42 at one end 41 where the cross-section of the scraping arm 40 and the outer cover 30 cooperate to form a U-shape, an opening groove 43 (the aforementioned first opening groove) is respectively provided. The two first opening grooves 43 are sleeved on the shaft 22, so that the scraping arm 40 and the wiper blade fixing seat 20 are hinged.

[0021] The characteristics of the present utility model are: a vertical wall 32 is provided inside the outer cover 30, and the vertical wall 32 and the leeward surface 33 and part of the windward surface 31 form a U-shape. Clamping structures (not shown in the figure) are provided on both the vertical wall 32 and the leeward surface 33. The vertical wall 32 and the leeward surface 33 cooperate to clamp one end 41 where the scraping arm and the outer cover 30 cooperate, and the outer cover 30 is clamped on the scraping arm 40 to complete the fixation of the outer cover 30 and the scraping arm 40.

[0022] At least one stopper 24, such as two stoppers, is provided on the wiper blade fixing seat 20. The stopper 24 is used to block the vertical wall 32 to prevent the vertical wall 32 from deforming outward and causing the outer cover 30 to come off the scraping arm 40; at the same time, the stopper 24 cooperates with the side wall 42 provided with the opening groove 44 in a U-shape to clamp the vertical wall 32, restricting the crosstalk of the outer cover 30 in the direction perpendicular to the length of the wiper blade 10.

[0023] An opening groove 44 (the aforementioned second opening groove) is provided on the side wall 42 of the U-shape facing the vertical wall 32. The opening groove 44 is an arc shape adapted to the protrusion 23. The protrusion 23 is embedded in the opening groove 44 to restrict the scraping arm 40 from coming off along the length direction of the wiper blade 10.

[0024] An elastic arm 25 is provided on the wiper blade fixing seat 20, and a groove 33 is provided on the windward surface 31 of the outer cover 30. The elastic arm 25 is embedded in the groove 33, so as to lock the movement of the outer cover 30 in the length direction of the wiper blade 10. It is necessary to manually unlock the elastic arm 31 and lift the scraping arm 40 so that the elastic arm 25 exits the groove 33 on the outer cover 30 before the scraping arm 40 and the outer cover 30 can be disassembled from the wiper blade fixing seat 20.

Claims

1. A secondary locking structure of a high-speed scraper arm and an outer cover, comprising a scraper blade, a scraper blade fixing seat for fixing the scraper blade, and an outer cover mounted on the scraper arm, wherein the outer cover has a windward surface and a leeward surface, and the windward surface is an inclined surface; the cross section of one end of the scraper arm that cooperates with the outer cover is U-shaped, and a vertical wall is further provided in the outer cover, and the vertical wall, the leeward surface and part of the windward surface form a U-shape, characterized in that: At least one stopper is arranged on the scraper blade fixing seat to block a vertical wall of the outer cover to prevent the vertical wall from deforming outwards and falling off the scraper arm.

2. The high-speed scraper arm and outer cover secondary locking structure according to claim 1, characterized in that: The vertical wall and the leeward surface are both provided with buckle structures for buckling the scraper arm to complete the fixation of the outer cover and the scraper arm.

3. The secondary locking structure of the high-speed scraper arm and the outer cover according to claim 1 or 2, characterized in that: An elastic arm is arranged on the scraper fixing seat, and a groove is arranged on the windward surface of the outer cover, and the elastic arm is embedded in the groove.

4. The secondary locking structure of the high-speed scraper arm and the outer cover according to claim 3 is characterized in that: A first opening groove is respectively arranged on a pair of side walls at one end of the scraper arm and the outer cover whose cross section is U-shaped, and the two first opening grooves are hinged on the axis of the scraper blade fixing seat so that the scraper arm is hinged to the fixing seat.

5. The secondary locking structure of the high-speed scraper arm and the outer cover according to claim 4 is characterized in that: A second opening groove is arranged on the side wall of the vertical wall at one end of the scraper arm and the outer cover having a U-shaped cross-section, and a protrusion is arranged on the scraper blade fixing seat, and the protrusion is embedded in the second opening groove to prevent the scraper arm from escaping from the scraper blade fixing seat.

6. The secondary locking structure of the high-speed scraper arm and the outer cover according to claim 5, characterized in that: The protrusion is arc-shaped, and the second opening groove is arc-shaped to match the protrusion.

Images