CN109094525B - Wiper shaft assembly structure and automobile - Google Patents

Abstract

The invention provides a wiper shaft assembly structure and an automobile, and relates to the technical field of automobiles, comprising a wiper main shaft, a sleeve assembly, a wiper rocker arm, a coil spring and an electromagnet; The main shaft passes through the accommodating cavity and protrudes along the two ends of the sleeve assembly in the length direction. The coil spring is located in the accommodating cavity, and the electromagnet is close to one end of the main shaft of the wiper. When it touches, the car ECU sends a signal to the electromagnet, the electromagnet generates an attractive force, and the attractive force overcomes the spring force of the coil spring, and the wiper spindle moves downward under the action of the electromagnetic attraction force of the electromagnet, which alleviates the horizontal bracket existing in the prior art. Insufficient rigidity or poor durability, prone to fatigue fracture; and small buffer space for collision, non-repeatable, high replacement cost technical problems; freeing up a lot of space, which has a good protective effect on pedestrians .

Description

Wiper shaft assembly structure and automobile

technical field

The invention relates to the technical field of automobiles, in particular to a wiper shaft assembly structure and an automobile.

Background technique

With the rapid development of automobile technology, the protection of pedestrians by automobiles has attracted more and more attention and attention from the people, car companies and relevant state agencies. National standards, C-NCAP, Euro-NCAP, etc. also put forward requirements and test methods for pedestrian protection of vehicles. Wipers are also called wipers, water dials, wipers or windshield wipers. Equipment for raindrops and dust on the windshield of the vehicle to improve the driver's visibility and increase driving safety. Due to the high rigidity of the wiper shaft of the car, in the collision between the vehicle and the pedestrian, the head of the pedestrian will hit the wiper shaft. In this case, the wiper shaft will have a great reaction force on the head of the pedestrian. Serious injury to the head. In the experimental test, the wiper shaft acts as a hard point, which will also reduce the score of pedestrian protection and reduce the safety performance of the vehicle.

The two ends of the wiper shaft fixing surface of the wiper in the prior art and the two bracket fixing surfaces are respectively connected by a supporting surface, and an induction groove is provided on the lateral direction of the supporting surface; The support surface formed by the support surface and the bracket fixing surfaces on both sides of the lower layer fix the wiper shaft to the vehicle body parts such as the windshield lower beam and the bottom surface of the water trough. When the wiper shaft receives a vertical impact force, it is forced to support The surface is bent and deformed, absorbs the impact energy, reduces the impact force, and reduces the reaction force of the wiper shaft.

However, the bracket of the wiper shaft structure in the prior art has insufficient lateral rigidity or poor durability due to the existence of the induction groove, and the upper end of the bracket and the wiper shaft are easily shaken when the vehicle is on bumpy roads. Shaking is easy to cause fatigue fracture at the induction groove; secondly, due to the small vertical distance of the induction groove, the deformation of the induction groove when the pedestrian's head hits the wiper shaft provides a small buffer space, and the ability to absorb collision energy is limited; At the same time, the bracket is not repeatable. Once the induction groove is bent and deformed, it cannot be recovered. It is a one-time product and has the problem of replacement cost in the later period, or it is difficult to find the corresponding bracket components when the model is replaced.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a wiper shaft assembly structure and an automobile, so as to alleviate the insufficient lateral rigidity or poor durability of the bracket in the prior art, and the phenomenon of fatigue fracture easily occurs; , technical problems with high replacement cost.

The invention provides a wiper shaft assembly structure, comprising: a wiper main shaft, a sleeve assembly, a wiper rocker arm, a coil spring and a rotating part;

The sleeve assembly is provided with an accommodating cavity. The wiper main shaft passes through the accommodating cavity and protrudes from both ends along the length direction of the sleeve assembly. One end of the wiper main shaft extending out of the sleeve assembly is connected to the wiper rocker arm. A wiper shaft boss is arranged at the other end of the accommodating cavity;

The coil spring is located in the accommodating cavity, and the coil spring is sleeved on the outside of the wiper main shaft, the two ends of the coil spring are respectively in contact with the inner wall of the sleeve assembly and the wiper shaft boss, and the coil spring has a pre-tightening force;

Both the sleeve assembly and the electromagnet are connected to the body. The electromagnet is connected to the end of the wiper rocker arm near the wiper spindle. The electromagnet is electrically connected to the car ECU. The collision information is transmitted to the car ECU, and the car ECU is used to control the electromagnet to energize, so that the main shaft of the wiper is adsorbed by the electromagnet and moves to the bottom of the body.

Further, the wiper shaft assembly structure provided by the present invention also includes a rotating part;

The rotating part is sleeved on the outside of the wiper main shaft, and both ends of the coil spring are respectively in contact with the inner wall of the sleeve assembly and the rotating part, so that the rotating part and the wiper shaft are convex The platform abuts; the rotating part is used to reduce the friction between the wiper shaft boss and the coil spring.

Further, the rotating part includes a first rotating part and a second rotating part, the first rotating part and the second rotating part are both sleeved outside the wiper shaft, and the first rotating part and the second rotating part are respectively arranged on the wiper shaft boss. On both sides, the coil spring is in contact with the second rotating part, and the coil spring is used to make the second rotating part abut against the wiper shaft boss, and to make the wiper shaft boss abut against the inner wall of the sleeve assembly through the first rotating part. catch.

Further, a washer is arranged between the second rotating part and the coil spring, and the coil spring acts on the second rotating part through the washer.

Further, both the first rotating part and the second rotating part are balls.

Further, the sleeve assembly includes a wiper shaft sleeve and a sleeve cover;

One end of the wiper shaft sleeve is provided with an opening, the sleeve cover is connected with the open end of the wiper shaft sleeve, the other end of the wiper shaft sleeve is provided with a first through hole, the sleeve cover is provided with a second through hole, and the wiper spindle respectively protrude along both ends of the wiper shaft sleeve through the first through hole and the second through hole;

The first rotating part is located between the sleeve cover and the wiper shaft boss.

Further, the wiper shaft sleeve includes a sleeve body, a sleeve upper bracket and a sleeve lower bracket;

The sleeve main body is connected with the sleeve cover, the second through hole is located at the end of the sleeve main body away from the sleeve cover, the upper bracket of the sleeve is located at the end of the sleeve main body close to the sleeve cover, and the lower bracket of the sleeve is located at the sleeve main body close to the second end of the sleeve cover One end of the through hole, and both the upper bracket of the sleeve and the lower bracket of the sleeve are connected with the side wall of the main body of the sleeve;

The sleeve main body is connected with the vehicle body through the sleeve upper bracket and the sleeve lower bracket.

Further, the end of the wiper main shaft extending out of the second through hole is provided with a spline, and the wiper main shaft is connected with the wiper rocker arm through the spline.

Further, the end of the wiper main shaft extending out of the first through hole is provided with a conical spline, and the wiper main shaft is connected with the wiper through the conical spline.

An automobile provided by the present invention includes the above-mentioned wiper shaft assembly structure.

A wiper shaft assembly structure provided by the present invention includes: a wiper main shaft, a sleeve assembly, a wiper rocker arm, a coil spring and a rotating part; an accommodating cavity is arranged inside the sleeve assembly, and the wiper main shaft passes through the accommodating cavity, The ends of the wiper main shaft extending out of the sleeve assembly are connected to the wiper rocker arm. The wiper main shaft is located at the other end of the accommodating cavity and is provided with a wiper shaft boss; the coil spring is located in the accommodating cavity. The two ends of the coil spring are respectively in contact with the inner wall of the sleeve assembly and the boss of the wiper shaft, and the coil spring has a pre-tightening force; the sleeve assembly and the electromagnet are both connected to the body Connection, the electromagnet is connected to the end of the wiper rocker arm close to the wiper spindle, the electromagnet is electrically connected to the car ECU, the front side sensor of the car is used to detect the collision information between the car and the pedestrian or the rider of the two-wheeler, and the collision information It is transmitted to the car ECU, and the car ECU is used to control the electromagnet to energize, so that the main shaft of the wiper is adsorbed by the electromagnet to move under the body; when the front sensor of the car detects that the car collides with a pedestrian, the car ECU sends a signal to the electromagnet , The electromagnet acts to generate an attractive force, the attractive force overcomes the spring force of the coil spring, and the wiper spindle moves downward under the action of the electromagnet electromagnetic suction force, which alleviates the insufficient lateral stiffness or poor durability of the bracket in the prior art. Fatigue fracture is easy to occur; and the buffer space for collision is small, non-repeatable, and the technical problem of high replacement cost; realizes that before pedestrians or two-wheeled riders touch the wiper main shaft, the wiper main shaft has moved downward to avoid It avoids the collision with the head of pedestrians, and at the same time frees up a lot of space, which plays a good role in protecting pedestrians.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic diagram of the overall structure of a wiper shaft assembly structure provided by an embodiment of the present invention;

2 is a schematic structural diagram of a wiper shaft assembly structure from a first perspective provided by an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional structural diagram along the A-A direction of the wiper shaft assembly structure provided in FIG. 2 .

Icon: 100-wiper shaft; 101-wiper shaft boss; 102-conical spline; 200-sleeve assembly; 201-wiper shaft sleeve; 211-sleeve body; 221-sleeve upper bracket; 231-set 202-sleeve cover; 300-wiper rocker arm; 400-coil spring; 500-rotating part; 501-first rotating part; 502-second rotating part; 600-electromagnet; 700-washer.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that when the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear. ”, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and "third," as they appear, are for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a Removable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1 is a schematic diagram of the overall structure of the wiper shaft assembly structure provided in this embodiment; wherein, the electromagnet 600 is close to the wiper main shaft 100 and is connected to one end of the wiper rocker arm 300 .

2 is a schematic structural diagram of the wiper shaft assembly structure provided by the present embodiment from a first perspective; wherein, the first perspective is along the direction of the front view of the sleeve lower bracket 231, and the wiper shaft sleeve 201 includes the sleeve main body 211, The upper bracket 221 of the sleeve and the lower bracket 231 of the sleeve.

3 is a schematic cross-sectional structural diagram of the wiper shaft assembly structure provided in FIG. 2 in the direction A-A; wherein, the coil spring 400 is sleeved outside the wiper main shaft 100, and the two ends of the coil spring 400 are respectively connected with the inner wall of the sleeve assembly 200 and the rotating part 500 abutments.

As shown in FIGS. 1-3 , a wiper shaft assembly structure provided in this embodiment includes: a wiper main shaft 100 , a sleeve assembly 200 , a wiper rocker arm 300 , a coil spring 400 and a rotating part 500 ; the sleeve assembly 200 An accommodating cavity is provided inside, and the wiper main shaft 100 passes through the accommodating cavity and protrudes along both ends of the sleeve assembly 200 in the longitudinal direction. The wiper shaft 100 is located at the other end of the accommodating cavity and is provided with a wiper shaft boss 101; the coil spring 400 is located in the accommodating cavity, and the coil spring 400 is sleeved outside the wiper spindle 100, and the two ends of the coil spring 400 are respectively connected with the sleeve assembly The inner wall of 200 is in contact with the wiper shaft boss 101, and the coil spring 400 has a pre-tightening force; the sleeve assembly 200 and the electromagnet 600 are both connected to the vehicle body, and the electromagnet 600 is close to the wiper spindle 100 connected to the end of the wiper rocker arm 300 , the electromagnet 600 is electrically connected with the car ECU, the front sensor of the car is used to detect the collision information between the car and the pedestrian or the rider of the two-wheeled vehicle, and the collision information is transmitted to the car ECU, and the car ECU is used to control the electromagnet 600 is energized, so that the wiper spindle 100 is attracted by the electromagnet 600 to move to the lower side of the vehicle body.

Among them, ECU (Electronic Control Unit) electronic control unit, also known as "trip computer", "vehicle computer", etc.; in terms of use, it is a special microcomputer controller for automobiles. It consists of microprocessor (CPU), memory (ROM, RAM), input/output interface (I/O), analog-to-digital converter (A/D), and large-scale integrated circuits such as shaping and driving.

The ECU has the functions of fault self-diagnosis and protection. When the system fails, it can also automatically record the fault code in the RAM and use protection measures to read the replacement program from the above-mentioned inherent program to maintain the operation of the engine; at the same time, these fault information will be. Displayed on the instrument panel and persisted.

Preferably, the electromagnet 600 may be a helical coil structure.

In this embodiment, when the front sensor of the car detects the collision between the car and the pedestrian or the rider of the two-wheeled vehicle, the ECU of the car sends a signal to the electromagnet 600, and the electromagnet 600 acts to generate an attractive force, which overcomes the coil spring 400. Therefore, before the pedestrian touches the wiper main shaft 100, the wiper main shaft 100 has moved downward, avoiding the collision with the pedestrian’s head, and at the same time giving way A large amount of space has played a good role in protecting pedestrians.

In addition, when a collision occurs, the electromagnet 600 can be turned off manually or the ECU can send a signal to turn off the electromagnet 600 (provided that the pedestrian has left the vehicle body), and the wiper spindle 100 moves upward under the action of the coil spring 400 to restore the initial working position.

A wiper shaft assembly structure provided in this embodiment includes: a wiper main shaft 100, a sleeve assembly 200, a wiper rocker arm 300, a coil spring 400 and a rotating part 500; the sleeve assembly 200 is provided with a accommodating cavity inside, and the wiper The main shaft 100 passes through the accommodating cavity and protrudes along both ends of the length direction of the sleeve assembly 200, respectively. One end of the wiper main shaft 100 extending out of the sleeve assembly 200 is connected to the wiper rocker arm 300, and the wiper main shaft 100 is located at the end of the accommodating cavity. The other end is provided with a wiper shaft boss 101; the coil spring 400 is located in the accommodating cavity, and the coil spring 400 is sleeved outside the wiper main shaft 100, and the two ends of the coil spring 400 are respectively connected with the inner wall of the sleeve assembly 200 and the wiper shaft boss. 101 abuts, the coil spring 400 has a pre-tightening force; the sleeve assembly 200 and the electromagnet 600 are both connected to the body, and the electromagnet 600 is close to the end of the wiper spindle 100 where the wiper rocker arm 300 is connected. Connection, the front side sensor of the car is used to detect the collision information between the car and the pedestrian, and transmit the collision information to the car ECU. The car ECU is used to control the electromagnet 600 to energize, so that the electromagnet 600 can attract the wiper spindle 100 to the bottom of the vehicle body Movement; when the sensor at the front of the car detects that the car collides with the pedestrian, the car ECU sends a signal to the electromagnet 600, and the electromagnet 600 acts to generate an attractive force, which overcomes the spring force of the coil spring 400, and the wiper spindle The iron 600 moves downward under the action of electromagnetic suction, which alleviates the insufficient lateral rigidity or poor durability of the bracket in the prior art, which is prone to fatigue fracture; and the buffer space for collision is small, which is not repeatable, and the replacement cost High technical problem; it is realized that the wiper main shaft 100 has moved downward before a pedestrian or a two-wheeled cyclist touches the wiper main shaft 100, which avoids collision with the pedestrian's head, and at the same time frees up a lot of space to avoid pedestrians. to good protection.

On the basis of the above-mentioned embodiment, further, the wiper shaft assembly structure provided in this embodiment further includes a rotating part 500; The inner wall of the barrel assembly 200 is in contact with the rotating part 500 , so that the rotating part 500 abuts with the wiper shaft boss 101 ; the rotating part 500 is used to reduce the friction between the wiper shaft boss and the coil spring 400 .

Wherein, the sleeve assembly 200 is used as a supporting part, the coil spring 400 and the rotating part 500 are placed through the internal accommodating cavity, and the rotating part 500 is fixed by the wiper shaft boss and the coil spring 400. When the wiper acts as the wiper spindle 100 to rotate , the friction between the wiper shaft boss, the inner wall of the sleeve assembly 200 and the coil spring 400 and the noise caused by the friction are reduced, and the twist of the coil spring 400 is avoided at the same time.

In addition, the stiffness coefficient and preload of the coil spring 400 can be adjusted appropriately to prevent the wiper main shaft 100 from fluctuating up and down when the road is bumpy, thereby avoiding fluctuation noise and fatigue damage of the wiper main shaft 100 .

The wiper main shaft 100 and the wiper rocker arm 300 can be connected in various ways, such as spline connection, pin connection, screw connection, etc. Preferably, the wiper main shaft 100 is connected to the wiper rocker arm 300 via splines.

Specifically, the friction between the rotating part 500 and the wiper boss and the coil spring 400 belongs to rolling friction.

Preferably, the horizontal cross-sectional shape of the accommodating cavity is circular.

In the wiper shaft assembly structure provided in this embodiment, when the wiper main shaft 100 is rotating, it has rolling friction with surrounding components, and the rotating part 500 is provided with grease, which further reduces the frictional force and alleviates the existing problems. In the technology, when the wiper shaft rotates under the action of the wiper, a large friction force will be generated between the boss of the wiper spindle 100 and the coil spring 400, which will affect the rotation of the wiper and easily cause abnormal noise. The smooth rotation of the wiper shaft ensures the NVH characteristics of the wiper assembly; and the structure can be reused, saving replacement costs and accessories in the later period, and is more practical.

On the basis of the above embodiment, further, the rotating part 500 includes a first rotating part 501 and a second rotating part 502, the first rotating part 501 and the second rotating part 502 are both sleeved outside the wiper main shaft 100, and the first rotating part 501 and the second rotating part 502 The rotating part 501 and the second rotating part 502 are respectively arranged on both sides of the wiper shaft boss 101 , the coil spring 400 is in contact with the second rotating part 502 , and the coil spring 400 is used to make the second rotating part 502 and the wiper shaft boss 101 . Abutting is used to make the wiper shaft boss 101 abut against the inner wall of the sleeve assembly 200 through the first rotating part 501 .

Wherein, when the first rotating part 501 is used alone or the second rotating part 502 is used alone, the wiper shaft boss 101 and the inner wall of the sleeve assembly 200 , or between the wiper shaft boss 101 and the coil spring 400 may be provided with a grease to reduce friction.

In this embodiment, the upward force of the coil spring 400 acts on the wiper shaft boss 101 through the second rotating part 502, and the upper side of the wiper shaft boss 101 interacts with the inner wall of the sleeve assembly 200 through the first rotating part 501, The positions on both sides of the wiper shaft boss 101 are all rolling friction, which minimizes the frictional force on both sides of the wiper shaft boss 101 .

Further, a washer 700 is disposed between the second rotating part 502 and the coil spring 400 , and the coil spring 400 acts on the second rotating part 502 through the washer 700 .

The washer 700 is sleeved on the outside of the wiper main shaft 100 , and two sides of the washer 700 are in contact with the second rotating part 502 and the coil spring 400 respectively, so that the coil spring 400 acts on the second rotating part 502 through the washer 700 . , the release area is increased.

Further, both the first rotating part 501 and the second rotating part 502 are balls.

Wherein, there are multiple balls, and the multiple balls are arranged similar to bearings. When the wiper spindle 100 rotates, it has rolling friction with surrounding components, and the balls have grease, so the friction force is smaller.

Further, the sleeve assembly 200 includes a wiper shaft sleeve 201 and a sleeve cover 202; one end of the wiper shaft sleeve 201 is provided with an opening, the sleeve cover 202 is connected to the open end of the wiper shaft sleeve 201, and the wiper shaft sleeve 201 The other end of the wiper is provided with a first through hole, the sleeve cover 202 is provided with a second through hole, and the wiper spindle 100 protrudes along both ends of the wiper shaft sleeve 201 through the first through hole and the second through hole respectively; The first rotating part 501 is located between the sleeve cover 202 and the wiper shaft boss 101 .

Wherein, the connection method between the sleeve cover 202 and the wiper shaft sleeve 201 can be various, for example, through screw connection, snap connection, riveting, etc. Preferably, the connection method between the sleeve cover 202 and the wiper shaft sleeve 201 is as follows: Threaded connection.

The inner diameter of the first through hole and the second through hole are both larger than the outer diameter of the wiper spindle 100 , so that the first through hole and the second through hole of the wiper spindle 100 are both clearance fit.

Specifically, the outer diameter of the wiper shaft boss 101 is larger than the diameter of the second through hole, and the outer diameter of the wiper shaft boss 101 is smaller than the inner diameter of the accommodating cavity.

Further, the wiper shaft sleeve 201 includes a sleeve main body 211, a sleeve upper bracket 221 and a sleeve lower bracket 231; the sleeve main body 211 is connected to the sleeve cover 202, and the second through hole is located in the sleeve main body 211 away from the sleeve cover At one end of the sleeve 202, the sleeve upper bracket 221 is located at the end of the sleeve main body 211 close to the sleeve cover 202, the sleeve lower bracket 231 is located at the end of the sleeve main body 211 close to the second through hole, and the sleeve upper bracket 221 and the sleeve lower bracket 231 are located at the end of the sleeve main body 211 close to the second through hole. The brackets 231 are all connected to the side walls of the sleeve main body 211 ; the sleeve main body 211 is connected to the vehicle body through the sleeve upper bracket 221 and the sleeve lower bracket 231 .

The sleeve upper bracket 221 and the sleeve lower bracket 231 can be connected to the sleeve main body 211 in various ways, such as integral molding, welding, connection by screws, etc. Preferably, the sleeve upper bracket 221 and the sleeve lower bracket The connection between 231 and the sleeve body 211 is integrally formed.

Further, the end of the wiper main shaft 100 extending out of the second through hole is provided with a spline, and the wiper main shaft 100 is connected to the wiper rocker arm 300 through the spline.

Further, the end of the wiper main shaft 100 extending out of the first through hole is provided with a conical spline 102 , and the wiper main shaft 100 is connected to the wiper through the conical spline 102 .

The specific process: the upper end of the sleeve body 211 is open, the lower end is closed but there is a second through hole for the wiper spindle 100 to pass through. The diameter of the second through hole is slightly larger than the outer diameter of the lower end of the wiper spindle 100, so that the lower end of the sleeve body 211 and the The lower part of the wiper main shaft 100 is clearance fit; the sleeve cover 202 is connected with the upper end of the sleeve main body 211 through threads; the upper and lower sides of the wiper shaft boss 101 are balls, the upper side of the upper ball is the sleeve cover 202, and the lower side is the ball The lower side of the gasket 700 is the washer 700, and the lower side of the gasket 700 is the coil spring 400; the outer diameter of the boss is slightly smaller than the inner diameter of the sleeve body 211, and the outer diameter of the gasket 700 is equivalent to the outer diameter of the boss; the upper brackets 221 and The sleeve lower bracket 231 is fixedly connected to the sleeve main body 211 for supporting the sleeve main body 211 and the entire wiper shaft assembly structure.

The upper bracket 221 of the sleeve and the lower bracket 231 of the sleeve are connected with the body parts, the coil spring 400 has a pre-tightening force, and the upper end bears against the gasket 700. The upper side of the gasket 700 is a ball, and the upward force of the coil spring 400 is acted by the ball. On the wiper shaft boss 101, the upper side of the wiper shaft boss 101 interacts with the sleeve cover 202 through the ball, and the sleeve cover 202 is threadedly connected with the sleeve body 211; The table 101 is clamped between the gasket 700 and the sleeve cover 202, and the wiper main shaft 100 is relatively fixed; due to the existence of the balls on the upper and lower sides of the wiper shaft boss 101, when the wiper acts as a wiper, the wiper main shaft 100 rotates, reducing the The friction between the wiper shaft boss 101 and the sleeve cover 202 and the coil spring 400 and the noise caused by the friction, while avoiding the distortion of the coil spring 400; When the road surface is bumpy, the wiper main shaft 100 fluctuates up and down, so as to avoid fluctuation noise and fatigue damage of the wiper main shaft 100 caused thereby.

An automobile provided by this embodiment includes the above-mentioned structure of the wiper shaft assembly; since the technical effect of the automobile provided by this embodiment is the same as the technical effect of the structure of the wiper shaft assembly provided by the above-mentioned embodiment, it is omitted here. Repeat.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A wiper shaft assembly structure comprising: the windshield wiper comprises a windshield wiper main shaft, a sleeve component, a windshield wiper rocker arm and a spiral spring; the inner part of the sleeve component is provided with an accommodating cavity, the wiper spindle penetrates through the accommodating cavity and extends out from two ends of the sleeve component along the length direction of the sleeve component respectively, one end of the wiper spindle extending out of the sleeve component is connected with the wiper rocker arm, and the other end of the wiper spindle, which is positioned in the accommodating cavity, is provided with a wiper shaft boss; the spiral spring is positioned in the accommodating cavity, the spiral spring is sleeved outside the wiper spindle, and two ends of the spiral spring are respectively abutted against the inner wall of the sleeve component and the wiper spindle boss; it is characterized by also comprising: an electromagnet;

the spiral spring has pre-tightening force;

the sleeve component and the electromagnet are connected with the automobile body, the electromagnet is close to one end of the wiper main shaft, which is connected with the wiper rocker arm, the electromagnet is electrically connected with an automobile ECU (electronic control unit), a front sensor of the automobile is used for detecting the information of the collision between the automobile and a pedestrian or a two-wheeled vehicle rider and transmitting the collision information to the automobile ECU, and the automobile ECU is used for controlling the electromagnet to be electrified so as to be adsorbed by the electromagnet, and the wiper main shaft moves below the automobile body.

2. The wiper shaft assembly structure of claim 1 further comprising a rotating portion;

the rotating part is sleeved outside the wiper spindle, and two ends of the spiral spring are respectively abutted against the inner wall of the sleeve component and the rotating part, so that the rotating part is abutted against the wiper shaft boss; the rotating portion is used for reducing friction between the wiper shaft boss and the spiral spring.

3. The wiper shaft assembly structure according to claim 2, wherein the rotating portion includes a first rotating portion and a second rotating portion, the first rotating portion and the second rotating portion are both sleeved outside the wiper main shaft, and the first rotating portion and the second rotating portion are respectively provided on both sides of the wiper shaft boss, the coil spring is abutted with the second rotating portion, the coil spring is used for abutting the second rotating portion with the wiper shaft boss and abutting the wiper shaft boss with the inner wall of the sleeve assembly through the first rotating portion.

4. The wiper shaft assembly structure according to claim 3, wherein a spacer is provided between the second rotating portion and the coil spring, and the coil spring acts on the second rotating portion through the spacer.

5. The wiper shaft assembly structure of claim 3 wherein the first and second rotating portions are both balls.

6. The wiper shaft assembly structure of claim 3 wherein said sleeve assembly includes a wiper shaft sleeve and a sleeve cover;

one end of the wiper shaft sleeve is provided with an opening, the sleeve cover is connected with the opening end of the wiper shaft sleeve, the other end of the wiper shaft sleeve is provided with a first through hole, the sleeve cover is provided with a second through hole, and the wiper main shaft respectively extends out along the two ends of the wiper shaft sleeve through the first through hole and the second through hole;

the first rotating portion is located between the sleeve cover and the wiper shaft boss.

7. The wiper shaft assembly structure of claim 6 wherein said wiper shaft sleeve includes a sleeve main body, a sleeve upper bracket and a sleeve lower bracket;

the sleeve main body is connected with the sleeve cover, the second through hole is formed in one end, far away from the sleeve cover, of the sleeve main body, the sleeve upper support is located at one end, close to the sleeve cover, of the sleeve main body, the sleeve lower support is located at one end, close to the second through hole, of the sleeve main body, and the sleeve upper support and the sleeve lower support are connected with the side wall of the sleeve main body;

the sleeve main body is connected with the vehicle body through the sleeve upper support and the sleeve lower support.

8. The wiper shaft assembly structure of claim 6 wherein the end of the wiper main shaft extending out of the second through hole is provided with a spline, and the wiper main shaft is connected with the wiper arm by the spline.

9. The wiper shaft assembly structure of claim 8 wherein the end of the wiper main shaft extending out of the first through hole is provided with a tapered spline, through which the wiper main shaft is connected with the wiper.

10. An automobile, characterized by comprising the wiper shaft assembly structure according to any one of claims 1 to 9.

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