CN211765416U

CN211765416U - Wiper driving device

Info

Publication number: CN211765416U
Application number: CN202020351989.1U
Authority: CN
Inventors: 赵宏宇; 王聪; 刘天铭
Original assignee: Yibin Cowin Auto Co Ltd
Current assignee: Yibin Cowin Auto Co Ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-10-27
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a wiper drive arrangement, including the windscreen wiper motor, with actuating lever that the windscreen wiper motor is connected, rotatable setting and with the actuating lever rotate the crank of being connected, with first connecting rod and the second connecting rod of crank connection, rotate with first connecting rod and be connected and with the first rocker of first windscreen wiper hub connection, rotate with the second connecting rod and be connected and with the second rocker of second windscreen wiper hub connection and be used for right the elastic element of elastic force is applyed to the crank. The utility model discloses a wiper drive arrangement through setting up elastic element, instantaneous acceleration when can reducing the switching-over reduces the impact force size that scrapes brush switching-over in-process and can produce to can realize improving the windscreen wiper switching-over abnormal sound.

Description

Wiper driving device

Technical Field

The utility model belongs to the technical field of car wiper, specifically speaking, the utility model relates to a wiper drive arrangement.

Background

Along with the improvement of the living standard of people, the requirement on the comfort of the automobile is greatly improved. Windscreen wiper motor link mechanism that many motorcycle types were disposed at present is rigid fit, can produce great impact force scraping brush switching-over in-process, can produce great noise, brings the driving experience that can not for the driver. Meanwhile, the service life of the wiper system can be reduced by the large wiper reversing impact force.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wiper drive arrangement, the impact force size that the brush switching-over in-process can produce is scraped in the purpose reduction.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: the windscreen wiper driving device comprises a windscreen wiper motor, a driving rod connected with the windscreen wiper motor, a crank which is rotatably arranged and is rotatably connected with the driving rod, a first connecting rod and a second connecting rod which are connected with the crank, a first rocker which is rotatably connected with the first connecting rod and is connected with the first windscreen wiper shaft, and a second rocker which is rotatably connected with the second connecting rod and is connected with the second windscreen wiper shaft; the wiper drive unit further includes an elastic member for applying an elastic force to the crank to reduce an instantaneous acceleration upon a change of direction.

The first connecting rod and the second connecting rod are rotatably connected with the crank at a first end of the crank, the elastic element is connected with the crank at a second end of the crank, and the crank is rotatably connected with the driving rod at a position between the two ends.

The elastic element is a tension spring, one end of the elastic element is connected with the first end of the driving rod, the other end of the elastic element is connected with one end of the crank, the second end of the driving rod is rotatably connected with the crank, and a motor shaft of the wiper motor is fixedly connected with the driving rod at a position between two ends of the driving rod.

One end of the first connecting rod is rotatably connected with the crank, and the other end of the first connecting rod is rotatably connected with the first rocker.

One end of the second connecting rod is rotatably connected with the crank, and the other end of the second connecting rod is rotatably connected with the second rocker.

The windscreen wiper driving device further comprises a cross beam and a fixing support arranged on the cross beam, the windscreen wiper motor is arranged on the fixing support, and the first windscreen wiper shaft and the second windscreen wiper shaft are arranged at two opposite ends of the cross beam.

The fixed bracket is positioned between the first wiper shaft and the second wiper shaft.

The utility model discloses a wiper drive arrangement through setting up elastic element, instantaneous acceleration when can reducing the switching-over reduces the impact force size that scrapes brush switching-over in-process and can produce to can realize improving the windscreen wiper switching-over abnormal sound.

Drawings

The description includes the following figures, the contents shown are respectively:

fig. 1 is a schematic structural view of a wiper driving device according to the present invention;

fig. 2 is a plan view of the wiper driving device of the present invention;

FIG. 3 is a schematic view of the assembly of the drive rod with the crank and the resilient member;

FIG. 4 is a schematic view of the rotational orientation of the drive rod and crank;

labeled as: 1. a first link; 2. a second link; 3. a first wiper shaft; 4. a second wiper shaft; 5. a cross beam; 6. fixing a bracket; 7. a wiper motor; 8. a drive rod; 9. a crank; 10. an elastic element; 11. a first rocker; 12. a second rocker.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.

As shown in fig. 1 to 3, the utility model provides a wiper driving device, including wiper motor 7, the actuating lever 8 of being connected with wiper motor 7, rotatable setting and with actuating lever 8 rotate the crank 9 of being connected, with first connecting rod 1 and the second connecting rod 2 that crank 9 is connected, rotate with first connecting rod 1 and be connected and with first wiper axle 3 be connected first rocker 11 and with second connecting rod 2 rotate be connected and with second wiper axle 4 be connected second rocker 12. The wiper driver of the present invention further includes an elastic member 10 for applying an elastic force to the crank 9 to reduce an instantaneous acceleration during the reversing.

Specifically speaking, as shown in fig. 1 to 3, the wiper driving device of the present invention further includes a cross beam 5 and a fixing bracket 6 disposed on the cross beam 5, the wiper motor 7 is disposed on the fixing bracket 6, and the first wiper shaft 3 and the second wiper shaft 4 are disposed at opposite ends of the cross beam 5. The axis of first windscreen wiper axle 3 parallels with the axis of second windscreen wiper axle 4, and the axis of first windscreen wiper axle 3 and second windscreen wiper axle 4 is mutually perpendicular with the length direction of crossbeam 5, and crossbeam 5 is fixed to be set up on the automobile body, and the one end setting on the length direction of crossbeam 5 lets the through-hole that first windscreen wiper axle 3 passed, and the other end setting on the length direction of crossbeam 5 lets the through-hole that second windscreen wiper axle 4 passed. First windscreen wiper axle 3 is used for the first windscreen wiper arm fixed connection with the wiper, second windscreen wiper axle 4 is used for the second windscreen wiper arm fixed connection with the wiper, installs on first windscreen wiper arm and the second windscreen wiper arm and scrapes the brush, and when first windscreen wiper axle 3 and second windscreen wiper axle 4 rotated, can drive first windscreen wiper arm and second windscreen wiper arm and rotate to can make two scrape the brush and clean on preceding windshield. The first rocker 11 has a certain length, the length direction of the first rocker 11 is perpendicular to the axis of the first wiper shaft 3, one end of the first rocker 11 in the length direction is fixedly connected with one end of the first wiper shaft 3, and the other end of the first rocker 11 in the length direction is rotatably connected with the first connecting rod 1. The first rocker arm and the second rocker arm are located on the same side of the cross beam 5, the second rocker arm 12 has a certain length, the length direction of the second rocker arm 12 is perpendicular to the axis of the second wiper shaft 4, one end of the second rocker arm 12 in the length direction is fixedly connected with one end of the second wiper shaft 4, and the other end of the second rocker arm 12 in the length direction is rotatably connected with the second connecting rod 2.

As shown in fig. 1 to 3, the first link 1 and the second link 2 are rotatably connected to the crank 9 at a first end of the crank 9, the elastic member 10 is connected to the crank 9 at a second end of the crank 9, and the crank 9 is rotatably connected to the driving rod 8 at a position between the two ends. The crank 9 has a certain length, the first end and the second end of the crank 9 are two ends of the crank 9 in the length direction, and the length direction of the crank 9 is perpendicular to the axes of the first wiper shaft 3 and the second wiper shaft 4 in space. One end of the elastic element 10 is connected with the first end of the driving rod 8, the other end of the elastic element 10 is connected with one end of the crank 9, the second end of the driving rod 8 is rotatably connected with the crank 9, and a motor shaft of the wiper motor 7 is fixedly connected with the driving rod 8 at a position between two ends of the driving rod 8. The actuating lever 8 has certain length, and the first end and the second end of actuating lever 8 are the both ends on the length direction of actuating lever 8, and the length direction of actuating lever 8 is perpendicular in the space with the axis of first windscreen wiper axle 3 and second windscreen wiper axle 4, and actuating lever 8 is located between fixed bolster 6 and second connecting rod 2, and fixed bolster 6 is located between first windscreen wiper axle 3 and the second windscreen wiper axle 4, fixed

bolster

6 and 5 fixed connection of crossbeam. The wiper motor 7 is fixedly arranged on the fixed support 6, a motor shaft of the wiper motor 7 penetrates through the fixed support 6 and then is fixedly connected with the driving rod 8, and the wiper motor 7 drives the driving rod 8 to rotate when running.

As shown in fig. 1 to 3, one end of the first connecting rod 1 is rotatably connected to the first end of the crank 9, and the other end of the first connecting rod 1 is rotatably connected to the first rocking bar 11. One end of the second connecting rod 2 is rotatably connected with the first end of the crank 9, and the other end of the second connecting rod 2 is rotatably connected with the second rocker 12. The length direction of the first connecting rod 1 is spatially vertical to the axial lines of the first wiper shaft 3 and the second wiper shaft 4, the length direction of the second connecting rod 2 is spatially vertical to the axial lines of the first wiper shaft 3 and the second wiper shaft 4, and the first connecting rod 1 and the second connecting rod 2 are rotationally connected with the crank 9 at the same end of the crank 9 through the same ball hinge. The distance between the first end of the driving rod 8 and the second wiper shaft 4 is smaller than the distance between the second end of the driving rod 8 and the second wiper shaft 4, and the distance between the first end of the driving rod 8 and the first wiper shaft 3 is larger than the distance between the second end of the driving rod 8 and the first wiper shaft 3.

Preferably, as shown in fig. 1 to 3, the elastic element 10 is a tension spring, two ends of the elastic element 10 are respectively connected with the driving rod 8 and the crank 9, and the elastic element 10 applies a pulling force to the crank 9 at the second end of the crank 9. Wiper motor 7 drives actuating lever 8 and does 360 rotations, and wiper motor 7 operation back makes actuating lever 8 when setting for the direction rotation, and actuating lever 8 drives crank 9 and rotates, and crank 9 drives first rocker 11 and the swing of second rocker 12 through first connecting rod 1 and second connecting rod 2, and then makes first wiper axle 3 and second wiper axle 4 rotate, and the direction of rotation when crank 9 rotates for actuating lever 8 this moment is the same with actuating lever 8's direction of rotation moreover.

The wiper system is reversed, namely the wiper starts to wipe the A column of the vehicle body from the initial position and then is reversed and then wipes the A column downwards, the running direction of the wiper motor is unchanged, only when the wiper is reversed, the load is increased, the impact is reduced by the buffer mechanism, and the initial position of the wiper is positioned below the front windshield. As shown in fig. 4, the set direction of the rotation of the driving rod is counterclockwise, when the wiper driving device drives the wiper to move upward from the initial position, the elastic element is stretched, when the wiper moves to the middle position of the upper wiping stroke, the acceleration value of the wiper is 0, then the acceleration of the wiper is reversed, but the wiper still has inertia of moving upward, after the reverse acceleration is generated, the elastic element 10 contracts, the elastic element 10 exerts a pulling force on the crank 9, the pulling force is transmitted to the wiper through the connecting rod, the rocker and other components, and a reverse acting force is exerted on the wiper.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. Wiper drive arrangement, including the wiper motor, with the actuating lever that the wiper motor is connected, rotatable setting and with the actuating lever rotate the crank of being connected, with first connecting rod and the second connecting rod of crank connection, with first connecting rod rotate be connected and with the first rocker of first wiper hub connection and with the second connecting rod rotate be connected and with the second rocker of second wiper hub connection, its characterized in that: and the spring element is used for applying elastic force to the crank so as to reduce the instantaneous acceleration during the reversing.

2. The wiper drive device according to claim 1, wherein: the first connecting rod and the second connecting rod are rotatably connected with the crank at a first end of the crank, the elastic element is connected with the crank at a second end of the crank, and the crank is rotatably connected with the driving rod at a position between the two ends.

3. The wiper drive device according to claim 1, wherein: the elastic element is a tension spring, one end of the elastic element is connected with the first end of the driving rod, the other end of the elastic element is connected with one end of the crank, the second end of the driving rod is rotatably connected with the crank, and a motor shaft of the wiper motor is fixedly connected with the driving rod at a position between two ends of the driving rod.

4. The wiper drive device according to any one of claims 1 to 3, wherein: one end of the first connecting rod is rotatably connected with the crank, and the other end of the first connecting rod is rotatably connected with the first rocker.

5. The wiper drive device according to any one of claims 1 to 3, wherein: one end of the second connecting rod is rotatably connected with the crank, and the other end of the second connecting rod is rotatably connected with the second rocker.

6. The wiper drive device according to any one of claims 1 to 3, wherein: the wiper motor is arranged on the fixed support, and the first wiper shaft and the second wiper shaft are arranged at two opposite ends of the cross beam.

7. The wiper drive device according to claim 6, wherein: the fixed bracket is positioned between the first wiper shaft and the second wiper shaft.