Anti-drop spherical hinge structure for connecting rod of windscreen wiper

Abstract

According to the anti-disengaging spherical hinge structure for the connecting rod of the windscreen wiper, through holes are formed in the two ends of the connecting rod, and hinge seats are arranged in the through holes in a penetrating mode and used for being connected with ball heads. The interior of the hinge seat is of a spherical hole structure, the spherical hole is communicated with the outer walls of the two opposite sides of the hinge seat, round holes are formed in the communication positions, the ball head is arranged in the spherical hole in the hinge seat, baffles are arranged on the outer walls of the two opposite sides of the ball head, the two baffles are located on the outer sides of the two round holes respectively, and the sides, facing the ball head, of the baffles are of a conical surface structure. The cone top faces the ball head; a connecting column is arranged on the side, corresponding to one baffle, of the ball head, the connecting column is coaxial with the conical face of the baffle, the ball center of the ball head is located on the axis of the connecting column, and when the connecting column swings to the limiting position, the conical face of the baffle makes contact with the outer edge of the round hole. According to the scheme, the two ends of the ball head are limited, the ball head can be effectively prevented from falling off, and the operation stability of the spherical hinge structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wiper connecting rod installation structures, in particular to a wiper connecting rod anti-dropping ball joint structure. Background Art

[0002] The driving components of the wiper mainly include a driving motor, a cam-linkage mechanism and a parallelogram mechanism, wherein the end of the connecting rod is connected to the cam and the connecting part of the parallelogram structure by a ball joint structure. The existing ball joint structure usually uses a blind hole structure of the hinge seat to connect the ball head. This type of ball joint structure lacks a limit on the ball head in the direction of the hinge seat opening, which makes the ball head easily fall off from one end of the hinge seat opening, eventually causing the wiper to fail and be damaged. Utility Model Content

[0003] In order to solve the deficiencies in the prior art, the utility model provides a wiper connecting rod anti-dropping ball joint structure, which limits both ends of the ball head, can effectively prevent the ball head from falling off, and improve the operating stability of the ball joint structure.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A wiper connecting rod anti-dropping ball joint structure, both ends of the connecting rod are provided with through holes, the through holes are penetrated by hinge seats, which are used to connect ball heads.

[0006] The interior of the hinge seat is a spherical hole structure, and the spherical hole is connected with the outer walls on both sides of the hinge seat opposite to each other, and a circular hole is formed at the connection point. The ball head is arranged in the spherical hole inside the hinge seat, and the outer walls on both sides opposite to the ball head are provided with baffles, and the two baffles are respectively located on the outsides of the two circular holes, and the side of the baffle facing the ball head is a conical surface structure, and the top of the cone faces the ball head; a connecting column is provided on the side of the ball head corresponding to one of the baffles, the connecting column is coaxial with the conical surface of the baffle, and the center of the ball head is located on the axis of the connecting column. When the connecting column swings to the extreme position, the conical surface of the baffle contacts the outer edge of the circular hole.

[0007] The beneficial effect of the utility model is that the hinge seat is set as a through structure in this scheme, so that it is convenient to set baffles at both ends, thereby achieving the purpose of limiting the displacement of the two ends of the ball head to prevent the ball head from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0009] Figure 1 Shown is a schematic diagram of the overall structure of the present application.

[0010] Figure 2 A cross-sectional view of a ball joint structure is shown.

[0011] Markings in the figure: connecting rod-1, through hole-11, hinge seat-2, round hole-21, ball head-3, connecting column-31, nut-32, screw-33, baffle-4, retaining ring-5. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0013] like Figure 1 , Figure 2 As shown, a wiper connecting rod anti-dropping ball joint structure, both ends of the connecting rod 1 are provided with through holes 11, and the through holes 11 are penetrated by an articulation seat 2 for connecting a ball head 3. The articulation seat 2 is made of resin, so that the overall structure has elasticity. At the same time, with the help of the lubricating properties of the resin itself, the lubrication effect is improved and the friction between parts is reduced.

[0014] The interior of the hinge seat 2 is a spherical hole structure, and the spherical hole is connected to the outer walls on both sides of the hinge seat 2, and a circular hole 21 is formed at the connection point. The ball head 3 is arranged in the spherical hole inside the hinge seat 2, and the outer walls on both sides of the ball head 3 are provided with baffles 4. The two baffles 4 are respectively located on the outside of the two circular holes 21. The side of the baffle 4 facing the ball head 3 is a conical surface structure, and the top of the cone faces the ball head 3; the ball head 3 is provided with a connecting column 31 on one side of one of the baffles 4, which is used to connect a cam or a parallelogram mechanism. The connecting column is a screw or a pin structure. The connecting column 31 is coaxial with the conical surface of the baffle 4, and the ball center of the ball head 3 is located at the connecting column 3. 1, when the connecting column 31 swings to the limit position, the conical surface of the baffle 4 contacts the outer edge of the circular hole 21, so as to prevent the ball head 3 from falling off from the hinge seat 2, so as to avoid the baffle 4 affecting the swing angle of the ball head 3; during assembly, the ball head 3 is first inserted into the spherical hole of the hinge seat 2, because the hinge seat 2 is made of plastic resin and has a certain elasticity, so the ball head 3 can be easily inserted into the hinge seat 2; then the baffle 4 is assembled to the ball head 3, and finally the hinge seat 2 is inserted into the through hole 11, and the hinge seat 2 and the inner wall of the through hole 11 can be connected by an adhesive, or fixed by screws.

[0015] Preferably, the portion where the ball head 3 contacts the baffle 4 has a platform, which is made by removing material, and the surface of the baffle 4 and the platform are made into a surface contact structure to improve the installation stability of the baffle 4 and prevent the baffle 4 from swinging around the axis.

[0016] Preferably, Figure 2As shown, the baffles 4 are all bowl-shaped structures, and their sides facing the outside of the ball head 3 are recessed inwardly. The connecting column 31 is a screw structure, and the corresponding baffle 4 is sleeved on the screw. The screw is provided with a nut 32 for locking the baffle 4. Because the baffle 4 is a bowl-shaped structure, the nut 32 can be hidden in the recessed structure outside the baffle 4 to reduce the overall size of the ball joint structure. The baffle 4 on the other side of the ball head 3 is connected to the ball head 3 by a screw 33, and the head of the screw 33 is also hidden in the recessed structure of the corresponding baffle 4.

[0017] Preferably, Figure 2 As shown, the outer sides of the circular holes 21 at both ends of the hinge seat 2 have a step portion with an annular structure, and the two ends of the connecting rod 1 corresponding to the through hole 11 are provided with a retaining ring 5, which is sleeved on the outer side of the step portion of the hinge seat 2, so as to fix the hinge seat 2 on the connecting rod 1, and the retaining ring 5 is connected to the connecting rod 1 by bolts.

[0018] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A wiper connecting rod anti-drop ball joint structure, wherein both ends of the connecting rod (1) are provided with through holes (11), and the through holes (11) are penetrated by a hinge seat (2) for connecting a ball head (3), and the hinge seat (2) is made of resin, characterized in that: The hinge seat (2) has a spherical hole structure inside, and the spherical hole is connected to the outer walls of the hinge seat (2) on both sides opposite to each other, and a circular hole (21) is formed at the connection point. The ball head (3) is arranged in the spherical hole inside the hinge seat (2), and the outer walls of the ball head (3) on both sides opposite to each other are provided with baffles (4), and the two baffles (4) are respectively located outside the two circular holes (21), and the side of the baffle (4) facing the ball head (3) is a conical surface structure, and the top of the cone faces the ball head (3); a connecting column (31) is provided on the side of the ball head (3) corresponding to one of the baffles (4), and the connecting column (31) is coaxial with the conical surface of the baffle (4), and the ball center of the ball head (3) is located on the axis of the connecting column (31), and when the connecting column (31) swings to the extreme position, the conical surface of the baffle (4) contacts the outer edge of the circular hole (21).

2. The wiper link anti-drop ball joint structure according to claim 1, characterized in that: The portion where the ball head (3) contacts the baffle plate (4) has a platform, and the surface of the baffle plate (4) and the platform are formed into a surface contact structure.

3. The wiper link anti-drop ball joint structure according to claim 1, characterized in that: The baffles (4) are all bowl-shaped structures, and the side facing the outside of the ball head (3) is inwardly concave. The connecting column (31) is a screw structure, and the corresponding baffle (4) is sleeved on the screw. The screw is provided with a nut (32) for locking the baffle (4). The baffle (4) on the other side of the ball head (3) is connected to the ball head (3) by a screw (33).

4. The wiper link anti-drop ball joint structure according to claim 1, characterized in that: The outer sides of the circular holes (21) at the two ends of the hinge seat (2) are provided with a step portion of an annular structure, and the two ends of the connecting rod (1) corresponding to the through hole (11) are provided with a retaining ring (5) which is sleeved on the outer side of the step portion of the hinge seat (2).

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