Automobile windscreen wiper arm

Abstract

According to the technical scheme, the automobile windscreen wiper arm is characterized in that the automobile windscreen wiper arm comprises a mounting base, an extension arm and a spring assembly arranged between the mounting base and the extension arm, and one end of the extension arm is rotationally connected to the mounting base; a sliding groove is formed in the mounting base in a penetrating mode, the sliding groove is of an arc-shaped structure, a limiting rod is rotationally connected to the extension arm, the limiting rod is connected into the sliding groove in a sliding mode, and the limiting rod can rotationally slide by 0-90 degrees along the sliding groove; and the limiting rod is provided with a limiting structure, when the limiting rod is rotated, the limiting structure can abut against the groove wall of the sliding groove in a limiting mode, and the automobile windscreen wiper arm can be limited and fixed when a windscreen wiper is replaced, so that springback of the windscreen wiper arm is avoided, and convenience is guaranteed when the windscreen wiper is replaced.

Description

Technical Field

[0001] The utility model relates to a wiper arm, more particularly to a car windshield wiper arm. Background Art

[0002] The wiper arm, typically made of metal or plastic, supports the wiper blades. It's attached to the car's front bumper and connects to the wipers. The wiper arm's primary function is to support the wipers, enabling them to function properly. The wipers, in turn, clear raindrops and snow from the car's windshield. Driven by a motor, the wiper blades move across the windshield, clearing raindrops and snow.

[0003] However, existing wiper arms have the following usage problems: when replacing the wiper blades, the extension arm needs to be bent open and placed at a 90-degree angle to the wiper rod for replacement. If the hand accidentally slips and touches the extension arm during the replacement process, the extension arm may rebound quickly and hit the car's windshield, causing unnecessary trouble and even property damage. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a car wiper arm that can be limited and fixed when replacing the wiper, thereby preventing the wiper arm from rebounding and ensuring convenience when replacing the wiper.

[0005] To achieve the above object, the present invention provides the following technical solution: a car wiper arm, comprising a mounting base, an extension arm, and a spring assembly disposed between the mounting base and the extension arm, wherein one end of the extension arm is rotatably connected to the mounting base;

[0006] The mounting seat is provided with a sliding groove which is arranged in an arc-shaped structure. The extension arm is rotatably connected to a limit rod which is slidably connected to the sliding groove. The limit rod can rotate and slide 0-90 degrees along the sliding groove.

[0007] Furthermore, a limiting structure is provided on the limiting rod. When the limiting rod is rotated, the limiting structure can be in limiting contact with the groove wall of the sliding groove.

[0008] The present invention is further configured as follows: the limiting structure includes rubber pads arranged on both sides of the limiting rod.

[0009] The utility model is further configured as follows: rubber layers are provided on both sides of the inner wall of the sliding groove.

[0010] The utility model is further configured as follows: the limiting rod includes a rod body and a first limiting cap and a second limiting cap, and the diameter of the rod body is less than or equal to the diameter of the sliding groove;

[0011] The diameter length of the first limiting cap and the second limiting cap is greater than the diameter of the sliding groove.

[0012] The present invention is further configured such that: the first limiting cap and / or the second limiting cap is screwed to the end of the rod body.

[0013] The present invention is further configured as follows: friction lines are provided on the circumferences of the first limiting cap and the second limiting cap.

[0014] The present invention is further configured as follows: the first limiting cap and the second limiting cap are configured in a hexagonal prism structure.

[0015] The present invention is further configured such that: both the first limiting cap and the second limiting cap are provided with indicator pieces.

[0016] The utility model is further configured as follows: the rubber pad is configured in an arc-shaped structure.

[0017] To sum up, the utility model has the following beneficial effects: the extension arm can be manually moved to rotate around the mounting base, and after rotating to the appropriate position, the limit rod is rotated so that the limit structure abuts against the groove wall, thereby limiting the extension arm and avoiding the extension arm from rebounding during the wiper replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a car wiper arm;

[0019] Figure 2 Schematic diagram of the three-dimensional structure of the mounting base;

[0020] Figure 3 Schematic diagram of the three-dimensional structure of the limiting rod.

[0021] Figure numerals: 1. mounting seat; 2. extension arm; 3. sliding groove; 4. limiting rod; 41. rod body; 42. first limiting cap; 43. second limiting cap; 5. limiting structure; 51. rubber pad. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0023] Reference Figures 1 to 3As shown, in order to achieve the above purpose, the utility model provides the following technical solutions: a car wiper arm, comprising a mounting base 1, an extension arm 2 and a spring assembly arranged between the mounting base 1 and the extension arm 2, one end of the extension arm 2 is rotatably connected to the mounting base 1; Figure 1 As shown, the extension arm 2 is rotatably connected to the mounting base 1 through a rotating shaft. When the spring assembly is a tension spring, one end of the tension spring is connected to the mounting base 1 and the other end is connected to the extension arm 2; or when the spring assembly is a torsion spring, it can be arranged at the rotating shaft. This structure is existing in the art and will not be described in detail here.

[0024] The mounting base 1 is provided with a sliding groove 3 which is arranged in an arc-shaped structure. The extension arm 2 is rotatably connected to a limit rod 4 which is slidably connected to the sliding groove 3. The limit rod 4 can rotate and slide along the sliding groove 3 by 0-90 degrees.

[0025] A limiting structure 5 is provided on the limiting rod 4 . When the limiting rod 4 is rotated, the limiting structure 5 can abut against the groove wall of the sliding groove 3 in a limiting manner.

[0026] The design of the present invention is that the extension arm 2 can be manually moved to rotate around the mounting base 1. After rotating to the appropriate position, the limit rod 4 is rotated to make the limit structure 5 abut against the groove wall, thereby limiting the extension arm 2, thereby avoiding the extension arm 2 from rebounding during the wiper replacement process.

[0027] The present invention is further configured as follows: the limiting structure 5 includes rubber pads 51 arranged on both sides of the limiting rod 4.

[0028] With the design of this structure, when the limit rod 4 rotates clockwise or counterclockwise, the rubber pads 51 on both sides can abut against the groove wall, thereby increasing the friction between the limit rod 4 and the groove wall, overcoming the elastic force of the spring, and playing a limiting role.

[0029] The present invention is further configured as follows: rubber layers are provided on both sides of the inner wall of the sliding groove 3 .

[0030] With this structural design, when the limiting rod 4 rotates, the rubber pad 51 abuts against the rubber layer, thereby increasing the friction between the two and improving the limiting effect.

[0031] When the extension arm is at any position, the limit lock can be achieved by rotating the limit rod.

[0032] The utility model is further configured as follows: the limiting rod 4 includes a rod body 41 and a first limiting cap 42 and a second limiting cap 43, and the diameter of the rod body 41 is less than or equal to the diameter of the sliding groove 3;

[0033] The diameters of the first limiting cap 42 and the second limiting cap 43 are larger than the diameter of the sliding groove 3 .

[0034] The design of this structure can make the rod body 41 slide stably in the sliding groove 3, and at the same time, the left and right movement of the rod body 41 can be limited by the design of the first limiting cap 42 and the second limiting cap 43.

[0035] The present invention is further configured such that the first limiting cap 42 and / or the second limiting cap 43 are screwed to the end of the rod body 41. This structural design enables the limiting rod 4 to be disassembled, and after disassembly, it is convenient to disassemble the subsequent extension arm 2.

[0036] Embodiment 1: Friction lines are provided on the circumference of the first limiting cap 42 and the second limiting cap 43 .

[0037] The design of this structure makes it convenient for operators to press and apply force.

[0038] Embodiment 2: The first limiting cap 42 and the second limiting cap 43 are arranged in a hexagonal prism structure.

[0039] The structure is designed so that it can be rotated by the operator's fingers or, if necessary, by an Allen wrench.

[0040] The present invention is further configured such that an indicator is provided on each of the first limiting cap 42 and the second limiting cap 43. This design allows the user to determine whether the limiting structure 5 is in contact with the wall of the sliding groove 3 by observing the indicator on the first limiting cap 42 or the second limiting cap 43, thereby preventing damage to the connection of the extending arm 2 caused by bending the extending arm 2 when the extending arm 2 is in the limiting state.

[0041] The indicator can be a groove with a directional arrow engraved on the first limiting cap 42 and the second limiting cap 43 , or a waterproof sticker with an indicating effect attached to the first limiting cap 42 and the second limiting cap 43 .

[0042] The present invention is further configured such that the rubber pad 51 is configured in an arc-shaped structure.

[0043] The design of this structure ensures that during the bending and rotation of the extension arm 2, even if the limit rod 4 rotates, the friction between the rubber pad 51 and the groove wall will not be too large, and will not hinder the normal bending of the extension arm 2.

[0044] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A car wiper arm, comprising a mounting seat (1), an extension arm (2), and a spring assembly arranged between the mounting seat (1) and the extension arm (2), wherein one end of the extension arm (2) is rotatably connected to the mounting seat (1); Its characteristics are: A sliding groove (3) is provided through the mounting seat (1), and the sliding groove (3) is provided in an arc-shaped structure. A limiting rod (4) is rotatably connected to the extension arm (2), and the limiting rod (4) is slidably connected in the sliding groove (3). The limiting rod (4) can rotate and slide 0 to 90 degrees along the sliding groove (3); Furthermore, a limiting structure (5) is provided on the limiting rod (4); when the limiting rod (4) is rotated, the limiting structure (5) can be brought into limiting contact with the groove wall of the sliding groove (3).

2. The automobile wiper arm according to claim 1, wherein: The limiting structure (5) comprises rubber pads (51) arranged on both sides of the limiting rod (4).

3. The automobile wiper arm according to claim 2, characterized in that: Rubber layers are provided on both sides of the inner wall of the sliding groove (3).

4. The automobile wiper arm according to claim 1, wherein: The limiting rod (4) comprises a rod body (41), a first limiting cap (42), and a second limiting cap (43); the diameter of the rod body (41) is less than or equal to the diameter of the sliding groove (3); The diameter length of the first limiting cap (42) and the second limiting cap (43) is greater than the diameter of the sliding groove (3).

5. The automobile wiper arm according to claim 4, characterized in that: The first limiting cap (42) and / or the second limiting cap (43) are screwed to the end of the rod body (41).

6. The automobile wiper arm according to claim 4, characterized in that: Friction lines are provided on the circumferential sides of the first limiting cap (42) and the second limiting cap (43).

7. The automobile wiper arm according to claim 4, characterized in that: The first limiting cap (42) and the second limiting cap (43) are arranged in a hexagonal prism structure.

8. The automobile wiper arm according to any one of claims 4 to 7, characterized in that: The first limiting cap (42) and the second limiting cap (43) are both provided with indicator pieces.

9. The automobile wiper arm according to claim 2, characterized in that: The rubber pad (51) is arranged in an arc-shaped structure.

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