Integrated connecting rod mechanism for windscreen wiper system

Abstract

The utility model relates to the technical field of automobile windscreen wipers, in particular to an integrated connecting rod mechanism for a windscreen wiper system, which comprises a bottom plate, an output shaft is arranged on the bottom plate in a penetrating manner, the output shaft is rotatably connected with the bottom plate, the center of the output shaft is close to the edge of the bottom plate, and a driving arm is sleeved on the output shaft. The driving arm is fixedly connected with the output shaft, a linkage shaft is rotatably arranged on one side of the bottom plate and is parallel to the output shaft, a linkage arm is fixedly arranged on the side, away from the bottom plate, of the linkage shaft, and a reciprocating arm is jointly arranged on the driving arm and the linkage arm. The side, away from the bottom plate, of the driving arm and the side, away from the bottom plate, of the linkage arm are rotationally connected with the reciprocating arm. The connecting rod mechanism has the effects that the connecting rod mechanism can be conveniently installed on the vehicle body A column, and the output angle deviation of the windscreen wiper is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile windshield wipers, in particular to an integrated connecting rod mechanism for a windshield wiper system. Background Art

[0002] The wiper system is an important part of the car. Currently, the wiper system includes an electric motor, a reducer, a four-bar linkage, a wiper arm spindle, a wiper blade, etc. When the driver presses the wiper switch, the motor starts to drive the connecting rod mechanism, and the connecting rod mechanism drives the wiper blade to wipe the windshield through the rotating shaft.

[0003] In the related art, a Chinese patent with publication number CN115891915A provides a wiper linkage mechanism specifically for a wiper, which includes a main frame, two ends of the main frame are provided with sub-frames, the sub-frames are provided with mounting holes, the mounting holes are used to fix with the vehicle body, a motor is connected to the main frame, the motor shaft is connected with a crank, the distal end of the crank is hinged with a driving connecting rod, the distal end of the driving connecting rod is hinged with a rocker arm I, the distal end of the rocker arm I is connected with a wiper shaft I, the outer sliding of the wiper shaft I is matched with a sleeve, the outer wall of the sleeve is provided with a support plate, the support plate is provided with at least two ear plates, the ear plate is provided with a fixing hole, and the fixing hole is used to fix with the vehicle body. When the motor shaft rotates, the crank will rotate with the shaft, so that the wiper shaft I can obtain a larger swing angle, so that the wiper shaft I drives the wiper arm to wipe, and through the arrangement of the motor bracket, the sleeve and the ear plate, the wiper linkage mechanism can adapt to different installation points and relative distances of different vehicle models.

[0004] In the process of implementing the present application, the inventors found that there are at least the following problems in this technology: the wiper linkage mechanism is installed on the vehicle body through mounting holes and fixing holes. When the mounting points of the mounting holes and the fixing holes deviate, the output angle of the wiper will deviate, resulting in a decrease in the accuracy of the wiper. However, due to the large number of mounting holes and fixing holes, the labor intensity of the linkage mechanism installation process is relatively high. Utility Model Content

[0005] In order to facilitate the installation of the connecting rod mechanism on the A-pillar of the vehicle body and reduce the deviation of the wiper output angle, the present application provides an integrated connecting rod mechanism for a wiper system.

[0006] The integrated linkage mechanism for a wiper system provided in the present application adopts the following technical solution:

[0007] An integrated connecting rod mechanism for a wiper system comprises a base plate, an output shaft is arranged through the base plate, the output shaft is rotatably connected to the base plate, the center of the output shaft is close to the edge of the base plate, a driving arm is sleeved on the output shaft, the driving arm is fixedly connected to the output shaft, a linkage shaft is rotatably arranged on one side of the base plate, the linkage shaft and the output shaft are parallel to each other, a linkage arm is fixedly arranged on the side of the linkage shaft away from the base plate, a reciprocating arm is jointly arranged on the driving arm and the linkage arm, and the side of the driving arm away from the base plate and the side of the linkage arm away from the base plate are both rotatably connected to the reciprocating arm.

[0008] By adopting the above technical solution, the wiper is installed on the output shaft. When the linkage shaft rotates to drive the linkage arm to rotate, the rotation of the linkage arm drives the reciprocating arm to move, the reciprocating arm movement drives the driving arm movement, and the driving arm movement drives the output shaft to move. Since the linkage shaft, linkage arm, reciprocating arm, driving arm and output shaft are centrally installed on the base plate, when the wiper system is installed on the A-pillar of the vehicle body, the driving mechanism in the wiper system can be installed on the A-pillar of the vehicle body by installing the base plate on the A-pillar of the vehicle body, thereby reducing the installation points on the A-pillar of the vehicle body, achieving the effect of facilitating the installation of the connecting rod mechanism on the A-pillar of the vehicle body, and reducing the output angle deviation caused by the installation point error. At the same time, the linkage shaft, linkage arm, reciprocating arm, driving arm and output shaft are all located within the range of the base plate, and the installation area of ​​the base plate is small, so when the base plate is installed on the A-pillar of the vehicle body, it will not affect the field of view.

[0009] Preferably, a driving seat is fixedly provided at one end of the driving arm, and the side of the driving seat away from the base plate is flush with the side of the driving arm away from the base plate, and the side of the driving seat away from the base plate is rotatably connected to the side of the reciprocating arm toward the base plate; a linkage seat is fixedly provided at one end of the linkage arm, and the side of the linkage seat away from the base plate is flush with the side of the linkage arm away from the base plate, and the side of the linkage seat away from the base plate is rotatably connected to the side of the reciprocating arm toward the base plate.

[0010] By adopting the above technical solution, through the setting of the driving seat and the linkage seat, one end of the reciprocating arm is eccentrically set to the output shaft, and the other end of the reciprocating arm is eccentrically set to the linkage shaft, thereby achieving the effect of the linkage shaft rotating to drive the output shaft to rotate.

[0011] Preferably, an inner arc surface is arranged on one side of the reciprocating arm, and an outer arc surface is arranged on the other side of the reciprocating arm.

[0012] By adopting the above technical solution, the arc-shaped arrangement of the reciprocating arm disperses the stress, thereby increasing the moment borne by the reciprocating arm.

[0013] Preferably, a cover plate is arranged on one side of the base plate, a shell is arranged between the cover plate and the base plate, one side of the shell is fixedly connected to the base plate, and the other side of the shell is detachably connected to the cover plate, and the driving arm, output shaft, linkage shaft, linkage arm and reciprocating arm are all located between the shell, the cover plate and the base plate.

[0014] By adopting the above technical solution, after the shell, cover plate and base plate are installed together, the drive arm, output shaft, linkage shaft, linkage arm and reciprocating arm covers are arranged inside, which has a protective effect on the drive arm, output shaft, linkage shaft, linkage arm and reciprocating arm.

[0015] Preferably, a control motor is fixedly arranged on the outer wall of the shell, the output shaft of the control motor passes through the shell, a control worm is fixedly arranged on the output shaft of the control motor, a control worm wheel is sleeved on the linkage shaft, the control worm wheel is fixedly connected to the linkage shaft, and the control worm and the control worm wheel are meshed with each other.

[0016] By adopting the above technical solution, after the control motor is started, the control motor drives the control worm to rotate, the rotation of the control worm drives the control worm wheel to rotate, and the rotation of the control worm wheel drives the linkage shaft to rotate.

[0017] Preferably, a magnet is fixedly arranged on one end of the output shaft facing the cover plate, a PCB board is arranged on the side of the cover plate facing the bottom plate, a Hall sensor chip is fixedly arranged on the side of the PCB board away from the cover plate, the Hall sensor chip is arranged opposite to the magnet, the Hall position chip is arranged corresponding to the center of the output shaft, and the Hall position chip is used to accurately control the output angle of the output shaft.

[0018] By adopting the above technical solution, when the output shaft rotates, the output shaft drives the magnet and the Hall sensor chip to rotate relative to each other, and the Hall sensor chip detects the rotation angle of the magnet, thereby achieving the effect of real-time monitoring of the rotation position of the output shaft.

[0019] Preferably, the shell has a plurality of connection grooves on one side facing the cover plate, and the cover plate has a plurality of connection holes, the connection holes are arranged opposite to the connection grooves, connection bolts are arranged in the connection holes, the connection bolts pass through the connection holes, and the connection bolts are threadedly connected to the connection grooves.

[0020] By adopting the above technical solution, the cover plate and the shell are connected by connecting bolts, thereby achieving an effect of detachable connection between the cover plate and the shell.

[0021] Preferably, a plurality of mounting seats are fixedly provided on the side walls of the bottom plate, mounting holes are penetrated through the mounting seats, and mounting bolts are arranged in the mounting holes.

[0022] By adopting the above technical solution, the mounting bolts pass through the mounting holes and are threadedly connected to the A-pillars of the vehicle body, thereby enabling the bottom plate to be mounted on the A-pillars of the vehicle body.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the bottom plate, output shaft, driving arm, linkage shaft, linkage arm and reciprocating arm, when the wiper system is installed on the A-pillar of the vehicle body, the driving mechanism in the wiper system can be installed on the A-pillar of the vehicle body by installing the bottom plate on the A-pillar of the vehicle body, thereby reducing the number of installation points, facilitating the installation of the connecting rod mechanism on the A-pillar of the vehicle body, and reducing the deviation of the output angle caused by the installation error of the installation point position. In addition, since the linkage shaft, linkage arm, reciprocating arm, driving arm and output shaft are all located within the range of the bottom plate, and the installation area of ​​the bottom plate is small, when the bottom plate is installed on the A-pillar of the vehicle body, it will not affect the field of vision;

[0025] 2. The effect of linkage shaft rotation is achieved by setting the control motor, the control worm and the control worm wheel;

[0026] 3. By setting up magnets and Hall sensor chips, the effect of real-time monitoring of the rotation position of the output shaft can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded schematic diagram of an integrated linkage mechanism for a wiper system in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram showing the connection relationship between the driving seat and the linkage seat in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram showing the connection relationship between the control motor and the control worm in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram showing the positional relationship between the magnet and the Hall sensor chip in the embodiment of the present application.

[0031] Explanation of the accompanying drawings: 1. Base plate; 11. Cover plate; 12. Shell; 13. PCB board; 14. Sleeve; 2. Output shaft; 21. Drive arm; 22. Drive seat; 3. Linkage shaft; 31. Linkage arm; 32. Linkage seat; 4. Reciprocating arm; 41. Inner arc surface; 42. Outer arc surface; 5. Control motor; 51. Control worm gear; 52. Control worm; 6. Magnet; 61. Hall sensor chip; 7. Connecting bolt; 71. Connecting hole; 72. Connecting groove; 8. Mounting bolt; 81. Mounting hole; 82. Mounting seat. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses an integrated linkage mechanism for a wiper system. Figures 1 to 3, including a base plate 1, a plurality of mounting seats 82 are integrally formed on the side wall of the base plate 1, a mounting hole 81 is provided through the mounting seat 82, and a mounting bolt 8 is arranged in the mounting hole 81. An output shaft 2 is provided through the base plate 1, and the center of the output shaft 2 is as close as possible to the edge of the base plate 1, and the side wall of the output shaft 2 is rotatably connected to the base plate 1 through a bearing. A sleeve 14 is fixedly installed on one side of the base plate 1, and the sleeve 14 is sleeved on the output shaft 2. The sleeve 14 is used to position the output shaft 2. A driving arm 21 is installed on the other side of the base plate 1, and the driving arm 21 is sleeved on the output shaft 2, and the driving arm 21 is fixedly connected to the output shaft 2. A linkage shaft 3 is rotatably provided on one side of the base plate 1, and the driving arm 21 and the linkage shaft 3 are located on the same side of the base plate 1, and the linkage shaft 3 and the output shaft 2 are parallel to each other. The linkage arm 31 is installed on the side of the linkage shaft 3 away from the bottom plate 1, and the reciprocating arm 4 is jointly arranged on the driving arm 21 and the linkage arm 31, and the side of the driving arm 21 away from the bottom plate 1 and the side of the linkage arm 31 away from the bottom plate 1 are both rotatably connected with the reciprocating arm 4. When the linkage shaft 3 rotates to drive the linkage arm 31 to rotate, the linkage arm 31 rotates to drive the reciprocating arm 4 to move, the reciprocating arm 4 moves to drive the driving arm 21 to move, and the driving arm 21 moves to drive the output shaft 2 to move, so that the output shaft 2 drives the wiper to move and wipe. Since the linkage shaft 3, the linkage arm 31, the reciprocating arm 4, the driving arm 21 and the output shaft 2 are centrally installed on the bottom plate 1, when the connecting rod mechanism is installed on the A-pillar of the vehicle body, it is only necessary to pass the mounting bolt 8 through the mounting hole 81 and threadedly connect it with the corresponding point of the A-pillar of the vehicle body, so that the bottom plate 1 is installed on the A-pillar of the vehicle body, and the bottom plate 1 is installed on the output shaft 2 through the wiper. The output shaft 2 driving the reciprocating motion of the wiper is integrated on the bottom plate 1, and the installation points on the output shaft 2 are omitted, so as to achieve the effect of reducing the installation points and facilitate the installation of the connecting rod mechanism on the A-pillar of the vehicle body. At the same time, since the number of installation points is reduced, the probability of output angle deviation caused by installation point errors is reduced. And since the linkage shaft 3, linkage arm 31, reciprocating arm 4, driving arm 21 and output shaft 2 are all located within the range of the bottom plate 1, and the installation area of ​​the bottom plate 1 is small, when the bottom plate 1 is installed on the A-pillar of the vehicle body, it will not affect the field of view.

[0034] In order to achieve the effect of driving the output shaft 2 to rotate due to the rotation of the linkage shaft 3, refer to Figure 1 and Figure 2, a driving seat 22 is installed at one end of the driving arm 21, and the side of the driving seat 22 away from the bottom plate 1 is flush with the side of the driving arm 21 away from the bottom plate 1. A linkage seat 32 is installed at one end of the linkage arm 31, and the side of the linkage seat 32 away from the bottom plate 1 is flush with the side of the linkage arm 31 away from the bottom plate 1. The side of the driving seat 22 away from the bottom plate 1 and the side of the linkage seat 32 away from the bottom plate 1 are both rotatably connected to the side of the reciprocating arm 4 facing the bottom plate 1 through a rotating shaft. An inner arc surface 41 is arranged on one side of the reciprocating arm 4, and an outer arc surface 42 is arranged on the other side of the reciprocating arm 4. The arc-shaped arrangement of the reciprocating arm 4 disperses stress, thereby increasing the torque borne on the reciprocating arm 4. Through the arrangement of the driving seat 22 and the linkage seat 32, one end of the reciprocating arm 4 is eccentrically arranged with the output shaft 2, and the other end of the reciprocating arm 4 is eccentrically arranged with the linkage shaft 3, thereby achieving the effect of the linkage shaft 3 rotating to drive the output shaft 2 to rotate.

[0035] In order to protect the driving arm 21, the output shaft 2, the linkage shaft 3, the linkage arm 31 and the reciprocating arm 4, refer to Figures 1 to 4 , a cover plate 11 is arranged on one side of the bottom plate 1, and a housing 12 is installed between the cover plate 11 and the bottom plate 1. One side of the housing 12 is integrally formed with the bottom plate 1, and a plurality of connecting grooves 72 are provided on the other side of the housing 12. A plurality of connecting holes 71 are provided on the cover plate 11, and the connecting holes 71 are arranged opposite to the connecting grooves 72. A connecting bolt 7 is arranged in the connecting hole 71, and the connecting bolt 7 passes through the connecting hole 71, and the connecting bolt 7 is threadedly connected with the connecting groove 72. The driving arm 21, the output shaft 2, the linkage shaft 3, the linkage arm 31 and the reciprocating arm 4 are all located between the housing 12, the cover plate 11 and the bottom plate 1. When the housing 12, the cover plate 11 and the bottom plate 1 are installed together, the driving arm 21, the output shaft 2, the linkage shaft 3, the linkage arm 31 and the reciprocating arm 4 are covered therein, so as to protect the driving arm 21, the output shaft 2, the linkage shaft 3, the linkage arm 31 and the reciprocating arm 4.

[0036] In order to achieve the effect of linkage shaft 3 rotation, refer to Figures 1 to 4 The control motor 5 is installed on the outer wall of the housing 12, and the output shaft 2 of the control motor 5 passes through the housing 12. The control worm 52 is installed on the output shaft 2 of the control motor 5, and the control worm wheel 51 is sleeved on the linkage shaft 3. The control worm wheel 51 is fixedly connected to the linkage shaft 3, and the control worm 52 and the control worm wheel 51 are meshed with each other. After the control motor 5 is started, the control motor 5 drives the control worm 52 to rotate, the rotation of the control worm 52 drives the control worm wheel 51 to rotate, and the rotation of the control worm wheel 51 drives the linkage shaft 3 to rotate.

[0037] In order to monitor the rotation position of output shaft 2 in real time, refer to Figure 4, a magnet 6 is installed on the end of the output shaft 2 facing the cover plate 11, a PCB board 13 is provided on the side of the cover plate 11 facing the bottom plate 1, and a Hall sensor chip 61 is installed on the side of the PCB board 13 away from the cover plate 11. The Hall sensor chip 61 is arranged opposite to the magnet 6, and the Hall position chip 61 is arranged corresponding to the center of the output shaft 2. The Hall position chip 61 is used to accurately control the output angle of the output shaft 2. When the output shaft 2 rotates, the output shaft 2 drives the magnet 6 and the Hall sensor chip 61 to rotate relative to each other, and the Hall sensor chip 61 detects the rotation angle of the magnet 6, so as to achieve the effect of real-time monitoring of the rotation position of the output shaft 2.

[0038] The implementation principle of an integrated linkage mechanism for a wiper system in the embodiment of the present application is as follows: since the linkage shaft 3, linkage arm 31, reciprocating arm 4, driving arm 21 and output shaft 2 are centrally mounted on the base plate 1, when the linkage mechanism is mounted on the A-pillar of the vehicle body, it is only necessary to thread the mounting bolt 8 through the mounting hole 81 and connect it to the corresponding point of the A-pillar of the vehicle body, so that the base plate 1 is mounted on the A-pillar of the vehicle body, and the base plate 1 is mounted on the output shaft 2 through the wiper. The output shaft 2 that drives the reciprocating motion of the wiper is integrated on the base plate 1, and the mounting points on the output shaft 2 are omitted, so as to achieve the effect of reducing the mounting points and realize the purpose of facilitating the mounting of the linkage mechanism on the A-pillar of the vehicle body. At the same time, since the number of mounting points is reduced, the probability of output angle deviation caused by mounting point errors is reduced. And since the linkage shaft 3, linkage arm 31, reciprocating arm 4, driving arm 21 and output shaft 2 are all located within the range of the base plate 1, and the mounting area of ​​the base plate 1 is small, when the base plate 1 is mounted on the A-pillar of the vehicle body, it will not affect the field of view. When the connecting rod mechanism is installed on the A-pillar of the vehicle body and the wiper is installed on the output shaft 2, the control motor 5 is started, and the control motor 5 drives the control worm 52 to rotate. The rotation of the control worm 52 drives the control worm wheel 51 to rotate. The rotation of the control worm wheel 51 drives the linkage shaft 3 to rotate. The rotation of the linkage shaft 3 drives the linkage arm 31 to rotate. The rotation of the linkage arm 31 drives the reciprocating arm 4 to move. The movement of the reciprocating arm 4 drives the driving arm 21 to move. The movement of the driving arm 21 drives the output shaft 2 to move, so that the output shaft 2 drives the wiper to wipe.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated linkage mechanism for a wiper system, comprising a base plate (1), an output shaft (2) penetrating the base plate (1), the output shaft (2) being rotatably connected to the base plate (1), characterized in that: The center of the output shaft (2) is close to the edge of the base plate (1); a driving arm (21) is sleeved on the output shaft (2); the driving arm (21) is fixedly connected to the output shaft (2); a linkage shaft (3) is rotatably arranged on one side of the base plate (1); the linkage shaft (3) and the output shaft (2) are parallel to each other; a linkage arm (31) is fixedly arranged on the side of the linkage shaft (3) away from the base plate (1); a reciprocating arm (4) is commonly arranged on the driving arm (21) and the linkage arm (31); and the side of the driving arm (21) away from the base plate (1) and the side of the linkage arm (31) away from the base plate (1) are both rotatably connected to the reciprocating arm (4).

2. The integrated linkage mechanism for a wiper system according to claim 1, characterized in that: A driving seat (22) is fixedly arranged at one end of the driving arm (21); a side of the driving seat (22) away from the base plate (1) is flush with a side of the driving arm (21) away from the base plate (1); a side of the driving seat (22) away from the base plate (1) is rotatably connected to a side of the reciprocating arm (4) facing the base plate (1); a linkage seat (32) is fixedly arranged at one end of the linkage arm (31); a side of the linkage seat (32) away from the base plate (1) is flush with a side of the linkage arm (31) away from the base plate (1); a side of the linkage seat (32) away from the base plate (1) is rotatably connected to a side of the reciprocating arm (4) facing the base plate (1).

3. The integrated linkage mechanism for a wiper system according to claim 1, characterized in that: An inner arc surface (41) is provided on one side of the reciprocating arm (4), and an outer arc surface (42) is provided on the other side of the reciprocating arm (4).

4. The integrated linkage mechanism for a wiper system according to claim 1, characterized in that: A cover plate (11) is arranged on one side of the base plate (1), a shell (12) is arranged between the cover plate (11) and the base plate (1), one side of the shell (12) is fixedly connected to the base plate (1), and the other side of the shell (12) is detachably connected to the cover plate (11), and the driving arm (21), the output shaft (2), the linkage shaft (3), the linkage arm (31) and the reciprocating arm (4) are all located between the shell (12), the cover plate (11) and the base plate (1).

5. The integrated linkage mechanism for a wiper system according to claim 4, characterized in that: A control motor (5) is fixedly arranged on the outer wall of the housing (12); an output shaft of the control motor (5) passes through the housing (12); a control worm (52) is fixedly arranged on the output shaft of the control motor (5); a control worm wheel (51) is sleeved on the linkage shaft (3); the control worm wheel (51) is fixedly connected to the linkage shaft (3); and the control worm (52) and the control worm wheel (51) are meshed with each other.

6. The integrated linkage mechanism for a wiper system according to claim 4, characterized in that: A magnet (6) is fixedly arranged on one end of the output shaft (2) facing the cover plate (11); a PCB board (13) is arranged on the side of the cover plate (11) facing the bottom plate (1); a Hall sensor chip (61) is fixedly arranged on the side of the PCB board (13) away from the cover plate (11); the Hall sensor chip (61) is arranged opposite to the magnet (6); the Hall sensor chip (61) is arranged corresponding to the center of the output shaft (2); and the Hall sensor chip (61) is used to accurately control the output angle of the output shaft (2).

7. The integrated linkage mechanism for a wiper system according to claim 4, characterized in that: The shell (12) is provided with a plurality of connection grooves (72) on the side facing the cover plate (11), and the cover plate (11) is provided with a plurality of connection holes (71), the connection holes (71) and the connection grooves (72) are arranged opposite to each other, a connection bolt (7) is arranged in the connection hole (71), the connection bolt (7) passes through the connection hole (71), and the connection bolt (7) is threadedly connected to the connection groove (72).

8. The integrated linkage mechanism for a wiper system according to claim 1, characterized in that: A plurality of mounting seats (82) are fixedly arranged on the side wall of the bottom plate (1), mounting holes (81) are penetrated through the mounting seats (82), and mounting bolts (8) are arranged in the mounting holes (81).

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