CN109094525B - Windscreen wiper axle assembly structure and car - Google Patents
Windscreen wiper axle assembly structure and car Download PDFInfo
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- CN109094525B CN109094525B CN201810904898.3A CN201810904898A CN109094525B CN 109094525 B CN109094525 B CN 109094525B CN 201810904898 A CN201810904898 A CN 201810904898A CN 109094525 B CN109094525 B CN 109094525B
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- wiper
- sleeve
- shaft
- main shaft
- automobile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/16—Means for transmitting drive
- B60S1/18—Means for transmitting drive mechanically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Cleaning In General (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a wiper shaft assembly structure and an automobile, and relates to the technical field of automobiles, wherein the wiper shaft assembly structure comprises a wiper main shaft, a sleeve component, a wiper rocker arm, a spiral spring and an electromagnet; the automobile windshield wiper comprises a sleeve component, a windshield wiper main shaft, an electromagnet, an automobile ECU (electronic control unit) and a motor, wherein an accommodating cavity is formed in the sleeve component, the windshield wiper main shaft penetrates through the accommodating cavity, two ends of the windshield wiper main shaft extend out along the length direction of the sleeve component respectively, the spiral spring is positioned in the accommodating cavity, the electromagnet is close to one end of the windshield wiper main shaft, when a sensor at the front part of the automobile detects that an automobile collides with a pedestrian, the automobile ECU sends a signal to the electromagnet, the electromagnet generates attraction force, the attraction force overcomes the spring force of the spiral spring, the windshield wiper main shaft moves downwards under the action of; the collision buffer space is small, the repeatability is not good, and the replacement cost is high; a large amount of space is made, and the pedestrian is well protected.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a wiper shaft assembly structure and an automobile.
Background
With the rapid development of automobile technology, the protection of pedestrians by automobiles is more and more concerned and emphasized by common people, automobile enterprises and related national institutions. National standards and C-NCAP, Euro-NCAP and the like also put forward requirements and test methods for pedestrian protection of vehicles, and wipers are also called wipers, water wipers, windscreen wipers or windshield wipers and are devices for brushing and scraping raindrops and dust attached to the windshield of a vehicle so as to improve the visibility of drivers and increase the driving safety. Because car windscreen wiper axle rigidity is great, in the collision of vehicle and pedestrian, the phenomenon of touchhing the windscreen wiper axle can appear in pedestrian's head, and the windscreen wiper axle can produce very big reaction force to pedestrian's head under this kind of condition, causes serious injury to the head. The wiper shaft is used as a hard point in the test, the score of pedestrian protection is also reduced, and the safety performance of the vehicle is reduced.
In the prior art, two ends of a wiper shaft fixing surface of a wiper are respectively connected with two bracket fixing surfaces through supporting surfaces, and an inducing groove is arranged on the supporting surfaces in the transverse direction; the wiper shaft is fixed on the body parts such as the lower cross beam of a windshield of an automobile, the bottom surface of a water flowing groove and the like through the bracket formed by the fixing surface of the wiper shaft, the supporting surfaces at two sides and the fixing surfaces of the brackets at two sides of the lower layer, when the wiper shaft receives impact force in the vertical direction, the supporting surfaces are forced to be bent and deformed, impact energy is absorbed, impact force is reduced, and the reaction force of the wiper shaft is reduced.
However, the support of the wiper shaft structure in the prior art has insufficient transverse rigidity or poor durability due to the existence of the induction groove, the upper end of the support and the wiper shaft are easy to shake when an automobile is on a bumpy road surface, and the long-term shaking of the support is easy to cause the fatigue fracture phenomenon at the induction groove; secondly, because the vertical distance of the inducing groove is smaller, the buffering space provided by the deformation of the inducing groove when the head of a pedestrian touches the wiper shaft is smaller, and the capacity of absorbing collision energy is limited; meanwhile, the support has non-repeatability, once the induction groove is bent and deformed, the support cannot be recovered, belongs to a disposable product, and has the problem of later-stage replacement cost, or corresponding support parts are difficult to find when the vehicle model is updated.
Disclosure of Invention
The invention aims to provide a wiper shaft assembly structure and an automobile, which are used for relieving the problems that in the prior art, a bracket is insufficient in transverse rigidity or poor in durability and is easy to fatigue fracture; and the technical problems of small collision buffer space, non-repeatability and high replacement cost.
The invention provides a wiper shaft assembly structure, comprising: the windshield wiper comprises a windshield wiper main shaft, a sleeve component, a windshield wiper rocker arm, a spiral spring and a rotating part;
the inner part of the sleeve component is provided with an accommodating cavity, the wiper main shaft passes 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 main shaft extending out of the sleeve component is connected with the wiper rocker arm, and the other end of the wiper main shaft positioned in the accommodating cavity is provided with a wiper shaft boss;
the spiral spring is positioned in the accommodating cavity and sleeved outside the wiper main shaft, two ends of the spiral spring are respectively abutted against the inner wall of the sleeve component and a boss of the wiper shaft, and the spiral spring has pretightening force;
sleeve subassembly and electro-magnet all with the automobile body coupling, the electro-magnet is close to the one end that the windshield wiper main shaft is connected with the windshield wiper rocking arm, and the electro-magnet is connected with car ECU electricity, and the front side sensor of car is used for detecting the information of car and pedestrian or the collision of two wheeler passerby to with this collision information transfer to car ECU department, car ECU is used for controlling the electro-magnet circular telegram, in order to adsorb the windshield wiper main shaft through the electro-magnet and remove to the automobile body below.
Further, the wiper shaft assembly structure provided by the invention further comprises a rotating part;
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.
Further, the rotation portion includes first rotation portion and second rotation portion, and first rotation portion and second rotation portion all overlap and locate the windshield wiper main shaft outside, and first rotation portion and second rotation portion set up respectively in the both sides of windshield wiper axle boss, and coil spring and second rotation portion butt, and coil spring is used for making second rotation portion and windshield wiper axle boss butt and is used for making the inner wall butt of windshield wiper axle boss through first rotation portion and sleeve subassembly.
Further, a gasket is arranged between the second rotating portion and the coil spring, and the coil spring acts on the second rotating portion through the gasket.
Further, the first rotating portion and the second rotating portion are both 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 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 part is positioned between the sleeve cover and the windshield wiper shaft boss.
Further, the wiper shaft sleeve comprises a sleeve main body, a sleeve upper support and a sleeve lower support;
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.
Furthermore, one 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.
Furthermore, one end of the wiper main shaft, which extends 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.
The invention provides an automobile which comprises the wiper shaft assembly structure.
The invention provides a wiper shaft assembly structure, comprising: the windshield wiper comprises a windshield wiper main shaft, a sleeve component, a windshield wiper rocker arm, a spiral spring and a rotating part; the inner part of the sleeve component is provided with an accommodating cavity, the wiper main shaft passes 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 main shaft extending out of the sleeve component is connected with the wiper rocker arm, and the other end of the wiper main shaft positioned in the accommodating cavity is provided with a wiper shaft boss; the spiral spring is positioned in the accommodating cavity and sleeved outside the wiper main shaft, two ends of the spiral spring are respectively abutted against the inner wall of the sleeve component and a boss of the wiper shaft, and the spiral spring has pretightening force; the automobile front side sensor is used for detecting the information of collision between an 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 adsorb the wiper main shaft to move towards the lower part of the automobile body through the electromagnet; when a sensor at the front part of the automobile detects that the automobile collides with a pedestrian, an automobile ECU sends a signal to an electromagnet, the electromagnet acts to generate attraction force, the attraction force overcomes the spring force of a spiral spring, and a main shaft of a windshield wiper moves downwards under the action of the electromagnetic attraction force, so that the phenomena of insufficient transverse rigidity or poor durability and easy fatigue fracture of a support in the prior art are relieved; the collision buffer space is small, the repeatability is not good, and the replacement cost is high; the utility model has the advantages of realized before pedestrian or two-wheeler ride passerby and touch the wiper main shaft, the wiper main shaft has downstream, has avoided the collision with pedestrian's head, has given way a large amount of spaces simultaneously, has played fine guard action to the pedestrian.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structure diagram of a wiper shaft assembly structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a first view angle of a wiper shaft assembly structure according to an embodiment of the present invention;
fig. 3 is a schematic sectional view of the wiper shaft assembly structure shown in fig. 2 along the direction a-a.
Icon: 100-wiper spindle; 101-wiper shaft boss; 102-tapered splines; 200-a sleeve assembly; 201-wiper shaft sleeve; 211-a sleeve body; 221-sleeve upper support; 231-sleeve lower holder; 202-sleeve cover; 300-wiper rocker arm; 400-a coil spring; 500-a rotating part; 501-a first rotating part; 502-a second rotating part; 600-an electromagnet; 700-shim.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic overall structure diagram of a wiper shaft assembly structure according to the present embodiment; wherein, the electromagnet 600 is adjacent to one end of the wiper arm 300 connected to the wiper main shaft 100.
Fig. 2 is a schematic structural view of a first view angle of the wiper shaft assembly structure according to the present embodiment; the first view angle is a front view direction along the sleeve lower holder 231, and the wiper shaft sleeve 201 includes a sleeve main body 211, a sleeve upper holder 221, and a sleeve lower holder 231.
Fig. 3 is a schematic sectional view taken along the direction a-a of the wiper shaft assembly structure of fig. 2; wherein, the coil spring 400 is sleeved outside the wiper main shaft 100, and two ends of the coil spring 400 are respectively abutted against the inner wall of the sleeve assembly 200 and the rotating part 500.
As shown in fig. 1 to 3, the present embodiment provides a wiper shaft assembly structure, including: the wiper main shaft 100, the sleeve assembly 200, the wiper arm 300, the coil spring 400, and the rotation part 500; the inside of the sleeve assembly 200 is provided with an accommodating cavity, the wiper spindle 100 penetrates through the accommodating cavity, and two ends of the wiper spindle 100 in the length direction of the sleeve assembly 200 respectively extend out, one end of the wiper spindle 100 extending out of the sleeve assembly 200 is connected with the wiper rocker 300, and the other end of the wiper spindle 100, which is positioned in the accommodating cavity, is provided with a wiper shaft boss 101; the spiral spring 400 is located in the accommodating cavity, the spiral spring 400 is sleeved outside the wiper main shaft 100, two ends of the spiral spring 400 are respectively abutted against the inner wall of the sleeve assembly 200 and the wiper shaft boss 101, and the spiral spring 400 has a pre-tightening force; the sleeve assembly 200 and the electromagnet 600 are both connected with a vehicle body, the electromagnet 600 is close to one end, connected with the wiper rocker arm 300, of the wiper spindle 100, the electromagnet 600 is electrically connected with an automobile ECU (electronic control Unit), a front sensor of the automobile is used for detecting collision information of the automobile and pedestrians or two-wheeled vehicle riders and transmitting the collision information to the automobile ECU, and the automobile ECU is used for controlling the electromagnet 600 to be electrified so as to adsorb the wiper spindle 100 to move below the vehicle body through the electromagnet 600.
Wherein, the ecu (electronic Control unit) electronic Control unit is also called "traveling computer", "vehicle computer", etc.; the controller is a special microcomputer controller for the automobile in terms of application. The device consists of a microprocessor (CPU), memories (ROM and RAM), an input/output interface (I/O), an analog-to-digital converter (A/D), a shaping circuit, a driving circuit and other large-scale integrated circuits.
The ECU has the functions of fault self-diagnosis and protection, and can automatically record fault codes in the RAM and read alternative programs from the inherent programs by adopting protection measures to maintain the operation of the engine when the system generates faults; and the fault information can be displayed on the instrument panel and can be kept alive.
Preferably, the electromagnet 600 may have a helical coil structure.
In this embodiment, when the automobile front sensor detects the collision of the automobile with a pedestrian or a two-wheeled vehicle rider, the automobile ECU sends a signal to the electromagnet 600, the electromagnet 600 acts to generate attraction force, the spring force of the coil spring 400 is overcome by the attraction force, and the wiper spindle 100 moves downward under the action of the electromagnetic attraction force of the electromagnet 600, so that before the pedestrian collides with the wiper spindle 100, the wiper spindle 100 moves downward, the collision with the head of the pedestrian is avoided, and a large amount of space is simultaneously given way, so that the automobile front sensor has a good protection effect on the pedestrian.
In addition, when a collision occurs, the electromagnet 600 may be manually turned off or the ECU sends a signal to turn off the electromagnet 600 (on the premise that it is determined that a pedestrian has left the vehicle body), and the wiper main shaft 100 is moved upward by the coil spring 400 to return to the initial operating position.
The embodiment provides a windscreen wiper axle assembly structure, includes: the wiper main shaft 100, the sleeve assembly 200, the wiper arm 300, the coil spring 400, and the rotation part 500; the inside of the sleeve assembly 200 is provided with an accommodating cavity, the wiper spindle 100 penetrates through the accommodating cavity, and two ends of the wiper spindle 100 in the length direction of the sleeve assembly 200 respectively extend out, one end of the wiper spindle 100 extending out of the sleeve assembly 200 is connected with the wiper rocker 300, and the other end of the wiper spindle 100, which is positioned in the accommodating cavity, is provided with a wiper shaft boss 101; the spiral spring 400 is located in the accommodating cavity, the spiral spring 400 is sleeved outside the wiper main shaft 100, two ends of the spiral spring 400 are respectively abutted against the inner wall of the sleeve assembly 200 and the wiper shaft boss 101, and the spiral spring 400 has a pre-tightening force; the sleeve assembly 200 and the electromagnet 600 are both connected with a vehicle body, the electromagnet 600 is close to one end of the wiper main shaft 100, which is connected with the wiper rocker arm 300, the electromagnet 600 is electrically connected with an automobile ECU (electronic control Unit), a front sensor of the automobile is used for detecting the information of collision between the automobile and pedestrians and transmitting the collision information to the automobile ECU, and the automobile ECU is used for controlling the electromagnet 600 to be electrified so as to adsorb the wiper main shaft 100 to move towards the lower part of the vehicle body through the electromagnet 600; when a sensor at the front part of the automobile detects that the automobile collides with a pedestrian, an automobile ECU sends a signal to the electromagnet 600, the electromagnet 600 acts to generate attraction force, the attraction force overcomes the spring force of the spiral spring 400, and the wiper spindle 100 moves downwards under the action of the electromagnetic attraction force of the electromagnet 600, so that the phenomenon that the transverse rigidity of a bracket is insufficient or the durability is poor and the fatigue fracture is easy to occur in the prior art is relieved; the collision buffer space is small, the repeatability is not good, and the replacement cost is high; before the pedestrian or the two-wheeled vehicle rider touches the wiper spindle 100, the wiper spindle 100 moves downwards, collision with the head of the pedestrian is avoided, a large amount of space is made, and the pedestrian is well protected.
In the basic implementation of the above embodiment, further, the wiper shaft assembly structure provided in this embodiment further includes a rotating portion 500; the rotating part 500 is sleeved outside the wiper main shaft 100, and two ends of the coil spring 400 are respectively abutted against the inner wall of the sleeve assembly 200 and the rotating part 500, so that the rotating part 500 is abutted against the wiper shaft boss 101; the rotating part 500 serves to reduce friction between the wiper shaft boss and the coil spring 400.
Wherein, the sleeve assembly 200 is used as a supporting component, the coil spring 400 and the rotating part 500 are placed through the inner accommodating cavity, and the rotating part 500 is fixed through the wiper shaft boss and the coil spring 400, when the wiper acts on the wiper main shaft 100 to rotate, the friction between the wiper shaft boss and the inner wall of the sleeve assembly 200 and the coil spring 400 and the noise caused by the friction are reduced, and simultaneously the torsion of the coil spring 400 is avoided.
In addition, the stiffness coefficient and the pretightening force of the coil spring 400 can be properly adjusted to prevent the wiper main shaft 100 from fluctuating up and down when the wiper main shaft 100 bumps on the road surface, thereby avoiding the fluctuating noise and fatigue damage of the wiper main shaft 100 caused by the fluctuating noise and the pretightening force.
The wiper main shaft 100 and the wiper arm 300 may be connected in various manners, for example: the wiper main shaft 100 is preferably connected with the wiper arm 300 by splines, by a pin connection, a screw connection, or the like.
Specifically, the friction of the rotating portion 500 with the wiper boss and the coil spring 400 is rolling friction.
Preferably, the horizontal cross-sectional shape of the accommodation cavity is circular.
According to the wiper shaft assembly structure provided by the embodiment, when the wiper main shaft 100 rotates, the wiper main shaft and surrounding parts are in rolling friction, and the rotatable part 500 is provided with lubricating grease, so that the friction force is further reduced, the technical problem that when the wiper shaft rotates under the action of a wiper in the prior art, a larger friction force is generated between a boss of the wiper main shaft 100 and a spiral spring 400 to influence the rotation of the wiper and easily cause abnormal sound is solved, the smoothness of the rotation of the wiper shaft is improved, and the NVH (noise, vibration and harshness) characteristic of the wiper assembly is ensured; moreover, the structure can be repeatedly used, so that the problems of later-stage replacement cost and accessories are solved, and the structure is more practical.
On the basis of the above embodiment, further, the rotating portion 500 includes the first rotating portion 501 and the second rotating portion 502, the first rotating portion 501 and the second rotating portion 502 are both sleeved outside the wiper main shaft 100, the first rotating portion 501 and the second rotating portion 502 are respectively disposed on two sides of the wiper shaft boss 101, the coil spring 400 abuts against the second rotating portion 502, and the coil spring 400 is used for making the second rotating portion 502 abut against the wiper shaft boss 101 and making the wiper shaft boss 101 abut against the inner wall of the sleeve assembly 200 through the first rotating portion 501.
Wherein, when the first rotating portion 501 is used singly or the second rotating portion 502 is used alone, grease may be provided between 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, to reduce friction.
In this embodiment, the upward acting force of the coil spring 400 acts on the wiper shaft boss 101 through the second rotating portion 502, the upper side of the wiper shaft boss 101 interacts with the inner wall of the sleeve assembly 200 through the first rotating portion 501, so that the positions of both sides of the wiper shaft boss 101 are both rolling friction, and the friction force of both sides of the wiper shaft boss 101 is reduced to the maximum.
Further, a spacer 700 is provided between the second rotating portion 502 and the coil spring 400, and the coil spring 400 acts on the second rotating portion 502 through the spacer 700.
The spacer 700 is sleeved outside the wiper spindle 100, and two sides of the spacer 700 are respectively abutted against the second rotating portion 502 and the coil spring 400, so that the coil spring 400 acts on the second rotating portion 502 through the spacer 700, and the removal area is increased.
Further, the first rotating portion 501 and the second rotating portion 502 are both balls.
Wherein, the balls are provided in plurality and arranged like a bearing, the wiper main shaft 100 has rolling friction with surrounding parts when rotating, and the balls have grease thereon, so that the friction 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 with the opening end of the wiper shaft sleeve 201, the other end of the wiper shaft sleeve 201 is provided with a first through hole, the sleeve cover 202 is provided with a second through hole, and the wiper main shaft 100 respectively extends out along the two ends of the wiper shaft sleeve 201 through the first through hole and the second through hole; the first rotation portion 501 is located between the sleeve cover 202 and the wiper shaft boss 101.
The connection mode of the sleeve cover 202 and the wiper shaft sleeve 201 may be various, for example: preferably, the sleeve cover 202 is connected to the wiper shaft sleeve 201 by a screw connection, a snap connection, a rivet connection, or the like.
The inner diameters of the first through hole and the second through hole are larger than the outer diameter of the wiper main shaft 100, so that the first through hole and the second through hole of the wiper main shaft 100 are in 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 chamber.
Further, the wiper shaft sleeve 201 includes a sleeve main body 211, a sleeve upper holder 221, and a sleeve lower holder 231; the sleeve main body 211 is connected with the sleeve cover 202, the second through hole is located at one end, far away from the sleeve cover 202, of the sleeve main body 211, the sleeve upper support 221 is located at one end, close to the sleeve cover 202, of the sleeve main body 211, the sleeve lower support 231 is located at one end, close to the second through hole, of the sleeve main body 211, and the sleeve upper support 221 and the sleeve lower support 231 are both connected with the side wall of the sleeve main body 211; the sleeve body 211 is connected to the vehicle body via the sleeve upper bracket 221 and the sleeve lower bracket 231.
The connection manner of the sleeve upper bracket 221 and the sleeve lower bracket 231 with the sleeve main body 211 can be various, for example: the sleeve upper holder 221 and the sleeve lower holder 231 are preferably integrally formed with the sleeve body 211 by means of integral molding, welding, screwing, or the like.
Further, a spline is provided at one end of the wiper main shaft 100 extending out of the second through hole, and the wiper main shaft 100 is connected to the wiper arm 300 through the spline.
Further, one end of the wiper main shaft 100 extending out of the first through hole is provided with a tapered spline 102, and the wiper main shaft 100 is connected with the wiper through the tapered spline 102.
The specific process comprises the following steps: the upper end of the sleeve main body 211 is an opening, the lower end is closed but is provided with a second through hole for the wiper main shaft 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 main shaft 100, so that the lower end of the sleeve main body 211 is in clearance fit with the lower part of the wiper main shaft 100; the sleeve cover 202 is connected with the upper end of the sleeve body 211 through threads; the upper side and the lower side of the wiper shaft boss 101 are both provided with balls, the upper side of the upper side ball is provided with the sleeve cover 202, the lower side of the lower side ball is provided with a gasket 700, and the lower side of the gasket 700 is provided with a spiral spring 400; the outer diameter of the boss is slightly smaller than the inner diameter of the sleeve main body 211, and the outer diameter of the gasket 700 is equivalent to that of the boss; the sleeve upper bracket 221 and the sleeve lower bracket 231 are fixedly connected with the sleeve main body 211 and are used for supporting the sleeve main body 211 and the whole wiper shaft assembly structure.
The sleeve upper bracket 221 and the sleeve lower bracket 231 are connected with a vehicle body part, the spiral spring 400 has pretightening force, the upper end of the spiral spring abuts against the gasket 700, the upper side of the gasket 700 is provided with balls, the upward acting force of the spiral spring 400 acts on the wiper shaft boss 101 through the balls, the upper side of the wiper shaft boss 101 interacts with the sleeve cover 202 through the balls, and the sleeve cover 202 is in threaded connection with the sleeve main body 211; therefore, the wiper shaft boss 101 is clamped between the spacer 700 and the sleeve cover 202 by the pre-tightening force of the coil spring 400, and the wiper main shaft 100 is relatively fixed; due to the existence of the balls on the upper side and the lower side of the wiper shaft boss 101, when the wiper main shaft 100 rotates under the action of a wiper, the friction between the wiper shaft boss 101 and the sleeve cover 202 and the spiral spring 400 and the noise caused by the friction are reduced, and meanwhile, the spiral spring 400 is prevented from being twisted; meanwhile, the stiffness coefficient and the pretightening force of the spiral spring 400 can be properly adjusted, so that the up-and-down fluctuation of the wiper main shaft 100 when the road surface bumps is prevented, and the fluctuation noise and the fatigue damage of the wiper main shaft 100 caused by the fluctuation noise and the fatigue damage are avoided.
The automobile provided by the embodiment comprises the wiper shaft assembly structure; since the technical effect of the automobile provided by the embodiment is the same as that of the wiper shaft assembly structure provided by the above embodiment, the detailed description is omitted here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810904898.3A CN109094525B (en) | 2018-08-09 | 2018-08-09 | Windscreen wiper axle assembly structure and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810904898.3A CN109094525B (en) | 2018-08-09 | 2018-08-09 | Windscreen wiper axle assembly structure and car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109094525A CN109094525A (en) | 2018-12-28 |
| CN109094525B true CN109094525B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810904898.3A Active CN109094525B (en) | 2018-08-09 | 2018-08-09 | Windscreen wiper axle assembly structure and car |
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| Country | Link |
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| CN (1) | CN109094525B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110861612B (en) * | 2019-12-03 | 2021-05-25 | 安徽江淮汽车集团股份有限公司 | Windscreen wiper shaft assembly and windscreen wiper |
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| Publication number | Publication date |
|---|---|
| CN109094525A (en) | 2018-12-28 |
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