阅读说明：本技术 一种雨刮器用自动卡紧和保持雨刮条湿润的装置 (Automatic clamping and device for keeping wiper strip moist for wiper ) 是由 蒯涛 于 2021-07-22 设计创作，主要内容包括：本发明涉及汽车配件技术领域,且公开了一种雨刮器用自动卡紧和保持雨刮条湿润的装置,包括补水机构和固定机构,所述补水机构包括水箱,所述水箱的内部滑动连接有压杆,所述压杆的顶部固定连接有压力簧,所述压力簧的顶部活动连接有拉力件,所述水箱远离中心的一侧内部活动连接有单向阀,所述水箱远离中心的一侧固定连接有导水管。转杆转动挤压其底部的压力簧,此时压杆受压向下挤压水箱内部的液体,当刮雨器由于长期暴晒以及风吹时,储水槽内部的水分随之蒸发消失,此时储水槽内的压强减少,水箱内部的液体被挤压通过导水管进入到储水槽内部对其补充水分,保证雨刮条始终处于湿润状态,从而达到了防止雨刮条干燥硬化、老化。(The invention relates to the technical field of automobile accessories and discloses a device for automatically clamping and keeping a wiper strip moist for a wiper, which comprises a water supplementing mechanism and a fixing mechanism, wherein the water supplementing mechanism comprises a water tank, a pressure rod is slidably connected inside the water tank, the top of the pressure rod is fixedly connected with a pressure spring, the top of the pressure spring is movably connected with a tension piece, one side of the water tank, which is far away from the center, is movably connected with a one-way valve, and one side of the water tank, which is far away from the center, is fixedly connected with a water guide pipe. The bull stick rotates the pressure spring of its bottom of extrusion, and the inside liquid of depression bar pressurized downward extrusion water tank this moment, when blowing the rain ware because long-term insolate and during the wind, the inside moisture of aqua storage tank evaporates thereupon and disappears, and the pressure in the aqua storage tank reduces this moment, and the inside liquid of water tank is extruded and is entered into the aqua storage tank through the aqueduct and inside replenishing moisture to it, guarantees that the windscreen wiper strip is in moist state all the time to reached and prevented windscreen wiper strip sclerosis, ageing.)

1. The utility model provides a wiper is with automatic chucking and keep moist device of wiper strip which characterized in that: including moisturizing mechanism (2) and fixed establishment (3), moisturizing mechanism (2) include water tank (21), the inside sliding connection of water tank (21) has depression bar (22), the top fixedly connected with pressure spring (23) of depression bar (22), the top swing joint of pressure spring (23) has pulling force spare (24), the inside swing joint in one side at center has check valve (25) is kept away from in water tank (21), one side fixedly connected with aqueduct (26) at center is kept away from in water tank (21).

2. The device of claim 1 for automatically gripping and maintaining the wetting of a wiper strip, wherein: fixed establishment (3) include base (31), the bottom of base (31) is rotated and is connected with gear wheel (32), the outside meshing of gear wheel (32) has concave-convex gear (33), the convex surface outside swing joint of concave-convex gear (33) has card post (34).

3. The device of claim 1 for automatically gripping and maintaining the wetting of a wiper strip, wherein: still include frame mechanism (1), frame mechanism (1) is including windscreen wiper strip (11), the positive center of windscreen wiper strip (11) is rotated and is connected with runner (12), the center of runner (12) is rotated and is connected with horizontal pole (13), bull stick (14) of the outside fixedly connected with symmetry of runner (12), both sides fixedly connected with telescopic link (15) about horizontal pole (13) is close to the one end of runner (12), one side that windscreen wiper strip (11) is close to bull stick (14) has seted up draw-in groove (16), the inside swing joint of draw-in groove (16) has buffering spring (17).

4. The device of claim 1 for automatically gripping and maintaining the wetting of a wiper strip, wherein: still include complementary unit (4), complementary unit (4) include crescent pinion rack (41), the top of crescent pinion rack (41) rotates and is connected with pull rod (42), the bottom of crescent pinion rack (41) rotates and is connected with clamp plate (43), the bottom swing joint of clamp plate (43) has gasbag (44), gasbag (44) are close to one end fixedly connected with air duct (45) at center, the bottom of gasbag (44) is provided with aqua storage tank (46).

5. The device of claim 1 for automatically gripping and maintaining the wetting of a wiper strip, wherein: the bottom fixed connection of pulling force spare (24) is at the top of bull stick (14), the top fixed connection of pressure spring (23) is in the bottom of bull stick (14), through automobile body vibrations to the conduction kinetic energy of bull stick (14) through pulling force spare (24), the one end fixedly connected with aqua storage tank (46) of water tank (21) are kept away from in aqueduct (26).

6. The device of claim 2 for automatically gripping and maintaining the wetting of a wiper strip, wherein: one side meshing of keeping away from concave-convex gear (33) of gear wheel (32) is in arc one side of crescent pinion rack (41), crescent pinion rack (41) special crescent arc structure has effectively avoided driving gear wheel (32) to rotate when gyration, the protrusion face of concave-convex gear (33) and the inclined plane sliding connection on card post (34) top, and when the protrusion face of inclined plane blocking concave-convex gear (33), do not hinder inside concave one side normal rotation, buffering spring (17) have been seted up in correspondence under the bottom of card post (34), have guaranteed that the protrusion face of concave-convex gear (33) rotates extrusion card post (34) and moves down and just falls into buffering spring (17), carry out spacing fixed to strip of scraping rain (11).

7. The device of claim 1 for automatically gripping and maintaining the wetting of a wiper strip, wherein: frame mechanism (1) is close to inside and moisturizing mechanism (2) sliding connection of bull stick (14), fixed establishment (3) and complementary unit (4) are close to one side meshing connection of gear wheel (32), complementary unit (4) are close to one end and the frame mechanism (1) rotation connection of bull stick (14), complementary unit (4) and moisturizing mechanism (2) are close to one side of gasbag (44) and are passed through check valve (25) and connect, aqua storage tank (46) have been seted up to the inside both sides of windscreen wiper strip (11).

Technical Field

The invention relates to the field of automobile accessories, in particular to a device for automatically clamping and keeping a wiper strip wet for a wiper.

Background

The windscreen wiper is used for wiping and removing raindrops and dust attached to a windshield of a vehicle so as to improve the visibility of a driver and increase the driving safety; the windscreen wiper is mainly used for sweeping rain, snow and dust which obstruct the sight on a windshield, the occurrence rate of traffic safety accidents can be effectively reduced by reasonably using the windscreen wiper in rainy, snowy and rainy days, and the safety of drivers and passengers is greatly protected.

The rubber wiper strip inside the windscreen wiper is dried, hardened and aged due to the fact that the windscreen wiper is exposed outside the windscreen, and the rubber wiper strip is dry, hardened and aged for a long time, so that the contact tightness between the windscreen wiper and the window glass is affected, and scratches are caused on the windscreen during use due to the fact that the rubber wiper strip is dry and hardened; meanwhile, the windscreen wiper slides back and forth after being used for a long time, internal parts are likely to be loosened, the connection of the windscreen wiper is unstable, and accidents occur when the sight of the windscreen wiper is cleared.

Disclosure of Invention

The invention aims to provide a device for automatically clamping and keeping a wiper strip moist for a wiper, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a windscreen wiper is with automatic chucking and moist device of strip of keeping windscreen wiper, includes moisturizing mechanism and fixed establishment, moisturizing mechanism includes the water tank, the inside sliding connection of water tank has the depression bar, the top fixedly connected with pressure spring of depression bar, the top swing joint of pressure spring has the pulling force piece, the inside swing joint in one side at center is kept away from to the water tank has the check valve, one side fixedly connected with aqueduct at center is kept away from to the water tank.

Further, fixed establishment includes the base, the bottom of base is rotated and is connected with the gear wheel, the outside meshing of gear wheel has the concave-convex gear, the convex surface outside swing joint of concave-convex gear has the card post.

Further, still include frame structure, frame structure includes the wiper strip, the positive center of wiper strip is rotated and is connected with the runner, the center of runner is rotated and is connected with the horizontal pole, the bull stick of the outside fixedly connected with symmetry of runner, both sides fixedly connected with telescopic link about the horizontal pole is close to the one end of runner, the draw-in groove has been seted up to one side that the wiper strip is close to the bull stick, the inside swing joint of draw-in groove has the buffering spring.

Further, still include complementary unit, complementary unit includes crescent toothed plate, crescent toothed plate's top rotates and is connected with the pull rod, crescent toothed plate's bottom rotates and is connected with the clamp plate, the bottom swing joint of clamp plate has the gasbag, the gasbag is close to the one end fixedly connected with air duct at center, the bottom of gasbag is provided with the aqua storage tank.

Furthermore, the bottom fixed connection of pulling force spare is at the top of bull stick, the top fixed connection of pressure spring is in the bottom of bull stick, and through the automobile body vibrations to the conduction kinetic energy of bull stick through pulling force spare, the one end fixedly connected with aqua storage tank that the water tank was kept away from to the aqueduct.

Further, one side meshing of keeping away from the concave-convex gear of gear wheel is in arc one side of crescent pinion rack, the special crescent arc structure of crescent pinion rack has effectively avoided driving the gear wheel when gyration and has rotated, the protruding face and the inclined plane sliding connection on card post top of concave-convex gear, and when the inclined plane blocked the protruding face of concave-convex gear, do not hinder inside concave one side normal rotation, the buffering spring has been seted up in correspondence under the bottom of card post, and the protruding face of having guaranteed concave-convex gear rotates extrusion card post and moves down and just falls into the buffering spring, carries out spacing fixed to the windscreen wiper strip.

Further, frame mechanism is close to the inside and the moisturizing mechanism sliding connection of bull stick, one side meshing connection that fixed establishment and complementary unit are close to the gear wheel, complementary unit is close to the one end and the frame mechanism rotation of bull stick and connects, complementary unit and moisturizing mechanism are close to one side of gasbag and are passed through the check valve and connect, the aqua storage tank has been seted up to the inside both sides of windscreen wiper strip.

Compared with the prior art, the invention has the following beneficial effects:

1. when the car normally traveles, because the resonance effect, can make the whole vibrations of wiper, it slightly rotates to drive the bull stick, the bull stick rotates and can stimulate the pull rod and remove in the spacing groove, it rotates to drive the crescent pinion rack, drive the gear wheel rotation in the outside, it rotates to drive the concave-convex gear, make inside its protrusion face extrusion card post makes its downstream card advance the draw-in groove, carry out spacing fixed action to the windscreen wiper strip, extrude the inside buffering spring of draw-in groove simultaneously, make it compressed and accumulate elastic potential energy, thereby the effect of stabilizing the wiper has been reached, it is unexpected to take place when preventing to clear up the sight.

2. When the bull stick rotated, can extrude the pressure spring of its bottom, the pulling force spare at tensile top, the inside liquid of depression bar pressurized downward extrusion water tank this moment, when the ware of blowing the rain owing to insolate for a long time and when blowing, the inside moisture evaporation thereupon of aqua storage tank disappears, the pressure in the aqua storage tank reduces this moment, the inside liquid of water tank is extruded and is entered into the inside supplementary moisture to it of aqua storage tank through the aqueduct, guarantee the windscreen wiper strip and be in moist state all the time, thereby reached and prevented windscreen wiper strip desiccation hardening, it is ageing, can not influence the compactness of windscreen wiper and door window glass contact, simultaneously, the service life of the device is prolonged.

3. Simultaneously when the bull stick pulling pull rod removed in the spacing inslot, can drive crescent pinion rack and pass through clamp plate extrusion gasbag, when atmospheric pressure reached the threshold value of check valve, can open internal valve for the gasbag passes through the check valve and to the inside conveying gas of water tank, and further inside atmospheric pressure of increase water tank assists its transmission moisture, increases its work efficiency to the draw-in groove replenishment moisture.

Drawings

FIG. 1 is a top view of a card housing construction of the present invention;

FIG. 2 is a schematic structural diagram of a frame mechanism according to the present invention;

FIG. 3 is a schematic structural view of a fixing mechanism according to the present invention;

FIG. 4 is a schematic view of the structure of the water replenishing mechanism of the present invention;

FIG. 5 is a schematic view of the auxiliary mechanism of the present invention.

In the figure: 1. a frame mechanism; 2. a water replenishing mechanism; 3. a fixing mechanism; 4. an auxiliary mechanism; 11. a wiper strip; 12. a rotating wheel; 13. a cross bar; 14. a rotating rod; 15. a telescopic rod; 16. a card slot; 17. a buffer spring; 21. a water tank; 22. a pressure lever; 23. a pressure spring; 24. a tension member; 25. a one-way valve; 26. a water conduit; 31. a base; 32. a bull gear; 33. a concave-convex gear; 34. clamping the column; 41. a crescent toothed plate; 42. a pull rod; 43. pressing a plate; 44. an air bag; 45. an air duct; 46. a water storage tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The first embodiment is as follows:

referring to fig. 1-3, a device for automatically clamping and keeping a wiper strip moist for a wiper includes a water replenishing mechanism 2 and a fixing mechanism 3, the fixing mechanism 3 includes a base 31, a bottom end of the base 31 is rotatably connected with a large gear 32, an outer side of the large gear 32 is engaged with a concave-convex gear 33, an outer side of a convex surface of the concave-convex gear 33 is movably connected with a clamping column 34, a side of the large gear 32 far away from the concave-convex gear 33 is engaged with an arc side of a crescent plate 41, the special crescent arc structure of the crescent plate 41 effectively prevents the large gear 32 from rotating during rotation, a convex surface of the concave-convex gear 33 is slidably connected with an inclined surface at the top end of the clamping column 34, and when the inclined surface blocks the convex surface of the concave-convex gear 33, the concave surface inside does not normally rotate, a buffer spring 17 is correspondingly arranged under the bottom end of the clamping column 34, so as to ensure that the convex surface of the concave-convex gear 33 rotates to squeeze the clamping column 34 to move down to just protrude into the buffer spring 17, the wiper strip 11 is limited and fixed.

Further, still include frame structure 1, frame structure 1 includes windscreen wiper strip 11, and the positive center of windscreen wiper strip 11 rotates and is connected with runner 12, and the center of runner 12 rotates and is connected with horizontal pole 13, and the bull stick 14 of the outside fixedly connected with symmetry of runner 12, both sides fixedly connected with telescopic link 15 about horizontal pole 13 is close to the one end of runner 12, and draw-in groove 16 has been seted up to one side that windscreen wiper strip 11 is close to bull stick 14, and the inside swing joint of draw-in groove 16 has buffering spring 17.

When the car normally traveles, because the resonance effect, can make the whole vibrations of wiper, it slightly rotates to drive bull stick 14, bull stick 14 rotates and can stimulate pull rod 42 and remove in the spacing groove, it rotates to drive crescent pinion rack 41, the gear wheel 32 that drives the outside rotates, it rotates to drive concave-convex gear 33, make its protrusion face extrusion card post 34 make its downstream card advance inside draw-in groove 16, carry out spacing fixed action to wiper strip 11, extrude the inside buffering spring 17 of draw-in groove 16 simultaneously, make it compressed and accumulate elastic potential energy, thereby reached the effect of stabilizing the wiper, it is unexpected to take place when preventing to clear up the sight.

Example two:

referring to fig. 4-5, a device for automatically clamping and keeping a wiper strip wet for a wiper includes a water supplementing mechanism 2 and a fixing mechanism 3, the water supplementing mechanism 2 includes a water tank 21, a pressure rod 22 is slidably connected to the inside of the water tank 21, a pressure spring 23 is fixedly connected to the top of the pressure rod 22, a tension member 24 is movably connected to the top of the pressure spring 23, a check valve 25 is movably connected to the inside of one side of the water tank 21 away from the center, a water guiding pipe 26 is fixedly connected to one side of the water tank 21 away from the center, the bottom of the tension member 24 is fixedly connected to the top of a rotating rod 14, the top of the pressure spring 23 is fixedly connected to the bottom of the rotating rod 14, kinetic energy is transmitted to the rotating rod 14 through the tension member 24 by vibration of a vehicle body, and a water storage tank 46 is fixedly connected to one end of the water guiding pipe 26 away from the water tank 21.

Still include complementary unit 4, complementary unit 4 includes crescent toothed plate 41, and crescent toothed plate 41's top rotates and is connected with pull rod 42, and crescent toothed plate 41's bottom rotates and is connected with clamp plate 43, and clamp plate 43's bottom swing joint has gasbag 44, and gasbag 44 is close to the one end fixedly connected with air duct 45 at center, and the bottom of gasbag 44 is provided with aqua storage tank 46.

When the rotating rod 14 rotates, the pressure spring 23 at the bottom of the rotating rod is squeezed to be compressed for energy storage, the tension piece 24 at the top is stretched, the working energy of the rotating rod 14 is reduced under the interaction of the pressure spring 23 and the tension piece 24, the sensitivity of the rotating rod is increased, the working time is longer, the pressure rod 22 is pressed to squeeze the liquid in the water tank 21 downwards, when the window wiper is exposed to the sun for a long time and blown by wind, the water in the water tank 46 evaporates and disappears, the pressure in the water tank 46 is reduced, the liquid in the water tank 21 is squeezed to enter the water tank 46 through the water guide pipe 26 to supplement the water, the rain strip 11 is ensured to be always in a wet state, when the water in the water tank 46 is sufficient, the water cannot be supplemented to the water tank 46 due to the pressure effect, and therefore, the rain strip 11 is prevented from being dried, hardened and aged, and the contact tightness between the wiper and the window glass cannot be influenced, meanwhile, the service life of the water tank is prolonged, meanwhile, when the rotating rod 14 pulls the pull rod 42 to move in the limiting groove, the crescent toothed plate 41 can be driven to extrude the air bag 44 through the pressing plate 43, when the air pressure reaches the threshold value of the one-way valve 25, the internal valve can be opened, the air bag 44 can convey air to the inside of the water tank 21 through the one-way valve 25, the air pressure inside the water tank 21 is further increased, the water tank is assisted to transmit water, and the work efficiency of supplementing water to the clamping groove 16 is increased.

Example three:

referring to fig. 1-5, a device for automatically clamping and keeping a wiper strip moist for a wiper includes a water replenishing mechanism 2 and a fixing mechanism 3, the fixing mechanism 3 includes a base 31, a bottom end of the base 31 is rotatably connected with a large gear 32, an outer side of the large gear 32 is engaged with a concave-convex gear 33, an outer side of a convex surface of the concave-convex gear 33 is movably connected with a clamping column 34, a side of the large gear 32 far away from the concave-convex gear 33 is engaged with an arc side of a crescent plate 41, the special crescent arc structure of the crescent plate 41 effectively prevents the large gear 32 from rotating during rotation, a convex surface of the concave-convex gear 33 is slidably connected with an inclined surface at the top end of the clamping column 34, and when the inclined surface blocks the convex surface of the concave-convex gear 33, the concave surface inside does not normally rotate, a buffer spring 17 is correspondingly arranged under the bottom end of the clamping column 34, so as to ensure that the convex surface of the concave-convex gear 33 rotates to squeeze the clamping column 34 to move down to just protrude into the buffer spring 17, carry out spacing fixed to windscreen wiper strip 11, further, still include frame mechanism 1, frame mechanism 1 includes windscreen wiper strip 11, and the positive center of windscreen wiper strip 11 rotates and is connected with runner 12, and the center of runner 12 rotates and is connected with horizontal pole 13.

When the car normally traveles, because the resonance effect, can make the whole vibrations of wiper, it slightly rotates to drive bull stick 14, bull stick 14 rotates and can stimulate pull rod 42 and remove in the spacing groove, it rotates to drive crescent pinion rack 41, the gear wheel 32 that drives the outside rotates, it rotates to drive concave-convex gear 33, make its protrusion face extrusion card post 34 make its downstream card advance inside draw-in groove 16, carry out spacing fixed action to wiper strip 11, extrude the inside buffering spring 17 of draw-in groove 16 simultaneously, make it compressed and accumulate elastic potential energy, thereby reached the effect of stabilizing the wiper, it is unexpected to take place when preventing to clear up the sight.

Secondly, when the rotating rod 14 rotates, the pressure spring 23 at the bottom of the rotating rod is squeezed to be compressed for energy storage, the tension piece 24 at the top is stretched, the working energy of the rotating rod 14 is reduced under the mutual action of the pressure spring 23 and the tension piece 24, the sensitivity of the rotating rod is increased, the working time is longer, the pressure rod 22 is pressed to squeeze the liquid in the water tank 21 downwards, when the window wiper is exposed to the sun for a long time and blown by wind, the water in the water storage tank 46 evaporates and disappears, the pressure in the water storage tank 46 is reduced, the liquid in the water tank 21 is squeezed to enter the water storage tank 46 through the water guide pipe 26 to supplement the water, the rain wiper strip 11 is ensured to be always in a wet state, when the water in the water storage tank 46 is sufficient, the water can not be supplemented to the water storage tank 46 due to the pressure effect, so that the rain wiper strip 11 is prevented from being dried, hardened and aged, the contact tightness of the window wiper and the window glass can not be influenced, meanwhile, the service life of the water tank is prolonged, meanwhile, when the rotating rod 14 pulls the pull rod 42 to move in the limiting groove, the crescent toothed plate 41 can be driven to extrude the air bag 44 through the pressing plate 43, when the air pressure reaches the threshold value of the one-way valve 25, the internal valve can be opened, the air bag 44 can convey air to the inside of the water tank 21 through the one-way valve 25, the air pressure inside the water tank 21 is further increased, the water tank is assisted to transmit water, and the work efficiency of supplementing water to the clamping groove 16 is increased.

The outer side of the rotating wheel 12 is fixedly connected with a symmetrical rotating rod 14, the upper side and the lower side of one end of a cross rod 13 close to the rotating wheel 12 are fixedly connected with telescopic rods 15, one side of a wiper strip 11 close to the rotating rod 14 is provided with a clamping groove 16, the inside of the clamping groove 16 is movably connected with a buffer spring 17, the inside of a water tank 21 is slidably connected with a pressure rod 22, the top of the pressure rod 22 is fixedly connected with a pressure spring 23, the top of the pressure spring 23 is movably connected with a tension member 24, one side of the water tank 21 far away from the center is movably connected with a one-way valve 25, one side of the water tank 21 far away from the center is fixedly connected with a water guide pipe 26, the bottom of the tension member 24 is fixedly connected with the top of the rotating rod 14, the top of the pressure spring 23 is fixedly connected with the bottom of the rotating rod 14, kinetic energy is transmitted to the rotating rod 14 through the tension member 24 by the vibration of a vehicle body, one end of the water guide pipe 26 far away from the water tank 21 is fixedly connected with a water storage tank 46, and further comprises an auxiliary mechanism 4, complementary unit 4 includes crescent toothed plate 41, crescent toothed plate 41's top is rotated and is connected with pull rod 42, crescent toothed plate 41's bottom is rotated and is connected with clamp plate 43, clamp plate 43's bottom swing joint has gasbag 44, gasbag 44 is close to the one end fixedly connected with air duct 45 at center, gasbag 44's bottom is provided with aqua storage tank 46, frame mechanism 1 is close to the inside of bull stick 14 and 2 sliding connection of moisturizing mechanism, fixed establishment 3 and complementary unit 4 are close to one side meshing connection of gear wheel 32, complementary unit 4 is close to the one end of bull stick 14 and frame mechanism 1 and rotates the connection, complementary unit 4 and moisturizing mechanism 2 are close to one side of gasbag 44 and pass through check valve 25 and connect, aqua storage tank 46 has been seted up to the inside both sides of windscreen wiper strip 11.

The working principle is as follows: when the car normally traveles, because the resonance effect, can make the whole vibrations of wiper, it slightly rotates to drive bull stick 14, bull stick 14 rotates and can stimulate pull rod 42 and remove in the spacing groove, it rotates to drive crescent pinion rack 41, the gear wheel 32 that drives the outside rotates, it rotates to drive concave-convex gear 33, make its protrusion face extrusion card post 34 make its downstream card advance inside draw-in groove 16, carry out spacing fixed action to wiper strip 11, extrude the inside buffering spring 17 of draw-in groove 16 simultaneously, make it compressed and accumulate elastic potential energy, thereby reached the effect of stabilizing the wiper, it is unexpected to take place when preventing to clear up the sight.

Secondly, when the rotating rod 14 rotates, the pressure spring 23 at the bottom of the rotating rod is squeezed to be compressed for energy storage, the tension piece 24 at the top is stretched, the working energy of the rotating rod 14 is reduced under the mutual action of the pressure spring 23 and the tension piece 24, the sensitivity of the rotating rod is increased, the working time is longer, the pressure rod 22 is pressed to squeeze the liquid in the water tank 21 downwards, when the window wiper is exposed to the sun for a long time and blown by wind, the water in the water storage tank 46 evaporates and disappears, the pressure in the water storage tank 46 is reduced, the liquid in the water tank 21 is squeezed to enter the water storage tank 46 through the water guide pipe 26 to supplement the water, the rain wiper strip 11 is ensured to be always in a wet state, when the water in the water storage tank 46 is sufficient, the water can not be supplemented to the water storage tank 46 due to the pressure effect, so that the rain wiper strip 11 is prevented from being dried, hardened and aged, the contact tightness of the window wiper and the window glass can not be influenced, and simultaneously, the service life of the device is prolonged.

Meanwhile, when the rotating rod 14 pulls the pull rod 42 to move in the limiting groove, the crescent toothed plate 41 is driven to extrude the air bag 44 through the pressing plate 43, when the air pressure reaches the threshold value of the one-way valve 25, the internal valve is opened, so that the air bag 44 conveys air to the inside of the water tank 21 through the one-way valve 25, the internal air pressure of the water tank 21 is further increased, the moisture transmission of the water tank is assisted, and the working efficiency of supplementing moisture to the clamping groove 16 is increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.