CN114132292B - Device and method for adjusting water outlet of windscreen wiper - Google Patents
Device and method for adjusting water outlet of windscreen wiper Download PDFInfo
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- CN114132292B CN114132292B CN202111499720.3A CN202111499720A CN114132292B CN 114132292 B CN114132292 B CN 114132292B CN 202111499720 A CN202111499720 A CN 202111499720A CN 114132292 B CN114132292 B CN 114132292B
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- water
- spray head
- water outlet
- rotating shaft
- rotating
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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
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
- B60S1/52—Arrangement of nozzles; Liquid spreading means
-
- 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
- B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
- B60S1/48—Liquid supply therefor
Abstract
The invention discloses a water outlet adjusting device for a water outlet of a windscreen wiper, which specifically comprises the following components: the spray head is in a fan shape, water outlets are formed in the top of the spray head, and a plurality of groups of water outlets are uniformly distributed on the top of the spray head; the communicating pipe is arranged at two sides of the spray head, one end of the communicating pipe is communicated with the inside of the spray head, and one end of the communicating pipe far away from the spray head is communicated with the control device; the rotating device is arranged at the bottom of the spray head, and the bottom of the rotating device is fixedly connected with the top of the control device; the control device includes: the invention relates to the technical field of windscreen wipers, in particular to a water inlet pipe, wherein a control panel is communicated with the top of the water inlet pipe. This wiper delivery port goes out water adjusting device can drive shower nozzle back and forth swing and conveniently increases the water spray scope of shower nozzle for everywhere water yield keeps unanimous, and the cleaning effect is better, and can spray out the inside water divergence of shower nozzle, conveniently further increases the water spray scope.
Description
Technical Field
The invention relates to the technical field of windscreen wipers, in particular to a device and a method for adjusting water outlet of a windscreen wiper.
Background
The wiper blade is an important accessory installed on a windshield, and has the effect of sweeping rain, snow and dust which obstruct the view of the windshield glass, so that the wiper blade has an important effect on driving safety, and the wiper blade is generally a vacuum wiper blade, an electric wiper blade and a wiper blade with an electric control unit, and the vacuum wiper blade has the defects that the moving speed of the wiper blade is unstable, when the vacuum degree of an engine is reduced (for example, when an automobile climbs a slope), the wiper blade is stopped, the visual field of a driver is blurred, and the vacuum wiper blade is eliminated in 1972, and the electric wiper blade is replaced. The water outlet of the wiper used at present is usually fixed, the water spraying range is smaller, and although the water is brought to other positions through the wiper, the water quantity of the wiper in the process of wiping is gradually reduced, and the water quantity of other positions is reduced, so that the cleaning effect is affected.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a water outlet adjusting device and a water outlet adjusting method for a water outlet of a wiper, which solve the problems that the water outlet of the wiper is usually fixed, the water spraying range is smaller, the water is brought to other positions by the wiper, but the water amount of the wiper is gradually reduced in the water wiping process, the water amount of other positions is less, and the cleaning effect is influenced.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a water outlet adjusting device of a water outlet of a windscreen wiper specifically comprises:
the spray head is in a fan shape, water outlets are formed in the top of the spray head, and a plurality of groups of water outlets are uniformly distributed on the top of the spray head;
the communicating pipe is arranged at two sides of the spray head, one end of the communicating pipe is communicated with the inside of the spray head, and one end of the communicating pipe far away from the spray head is communicated with the control device;
the rotating device is arranged at the bottom of the spray head, and the bottom of the rotating device is fixedly connected with the top of the control device;
the control device includes:
the top of the water inlet pipe is communicated with a control panel, and the top of the control panel is fixedly connected with a fixing seat;
the rotating shaft is arranged in the control panel, and the top of the rotating shaft is rotationally connected with the bottom of the inner wall of the control panel through a bearing;
the fan-shaped stop block is fixed on the side face of the rotating shaft, grooves are formed in the top and the bottom of the fan-shaped stop block, and a balancing weight is fixedly connected to the top of one side, away from the fan-shaped stop block, of the rotating shaft;
the driving slurry is fixedly connected with the rotating shaft at the top, and one end of the driving slurry, which is far away from the rotating shaft, is arranged inside the water inlet pipe.
The control device is arranged, when clean water passes through the water inlet pipe, water flow in the water inlet pipe drives the driving slurry to rotate, the driving slurry drives the fan-shaped check block to rotate, the fan-shaped check block rotates and is blocked at the connection positions of the two sides of the control panel and the communicating pipe in turn, water flows in the communicating pipe at the two sides of the control panel in turn, water flows in the two sides of the spray head in turn, the spray head is pushed to rotate around the rotating device by the water flow, the spray head can be driven to swing back and forth, the water spraying range of the spray head can be conveniently enlarged, water quantity at each position is kept consistent, and the cleaning effect is good.
Preferably, the top of the fixing seat is fixedly connected with the bottom of the rotating device, and one end of the communicating pipe, which is far away from the spray head, is communicated with the control panel.
Preferably, the communicating pipe is made of an elastic hose, and the side surface of the fan-shaped stop block is opposite to the communicating pipe and the communicating position of the control panel.
Preferably, the weight of balancing weight is the same with the weight of fan-shaped dog, the drive thick liquid is rotated with the inlet tube through the support and is connected, is provided with drive thick liquid and balancing weight, and the gravity of the fan-shaped dog of accessible balancing weight takes place eccentric condition when avoiding driving thick liquid to rotate to the shower nozzle sets up to fan-shaped, and multiunit apopore has been seted up at the top, can be with the inside water divergent blowout of shower nozzle, and the convenience further increases the water spray scope.
Preferably, the rotating device comprises a rotating base, the rotating groove is formed in the top of the rotating base, the rotating groove inner wall is rotationally connected with a rotating shaft through a bearing, spring springs are arranged between the two ends of the rotating shaft and the rotating groove inner wall, the rotating device is arranged, when the spray head receives the thrust of water flow in the communicating pipe, the rotating shaft is driven to rotate in the rotating groove, the spring springs are compressed when the rotating shaft rotates, the rotating amplitude of the spray head is limited by the elastic force of the spring springs, and different spring springs are replaced by different types of vehicles to adapt, so that the adaptability and the adjustability are good.
Preferably, the bottom of the rotating base is fixedly connected with the top of the fixing seat, and the top of the rotating shaft is fixedly connected with the bottom of the spray head.
Preferably, the setting direction of rotation axis both ends clockwork spring is opposite, clockwork spring's central point and rotation axis fixed connection, clockwork spring's marginal end and rotation groove inner wall fixed connection, the clockwork spring at rotation axis both ends sets up in opposite directions, and the clockwork spring of compression one end when rotating axial one side, the clockwork spring of the other end of stretching simultaneously, when rotating to the opposite side, the clockwork spring of original compression is stretched, and original tensile clockwork spring is compressed, can make shower nozzle to both sides wobbling range remain the same, and the equilibrium is better.
The application method of the water outlet adjusting device of the water outlet of the windscreen wiper comprises the following steps:
s1, when clean water passes through a water inlet pipe, water flow in the water inlet pipe drives driving slurry to rotate, the driving slurry drives a fan-shaped stop block to rotate, the fan-shaped stop block rotates and is alternately blocked at the connection positions of two sides of a control panel and a communicating pipe, and water flows alternately in the communicating pipes at two sides of the control panel;
s2, alternately feeding water to two sides of the spray head, wherein water flow pushes the spray head to drive the rotating shaft to rotate back and forth in the rotating groove, the spring at one end is compressed when the rotating shaft rotates, and the spring at the other end is stretched at the same time;
s3, when the spray head and the rotating shaft rotate back and forth, water in the spray head is discharged from the water outlet under the action of water pressure, and water sprayed out of the top of the spray head falls on the front windshield in a fan shape.
(III) beneficial effects
The invention provides a device and a method for adjusting water outlet of a windscreen wiper. The beneficial effects are as follows:
(1) According to the water outlet adjusting device and method for the water outlet of the windscreen wiper, the control device is arranged, when clean water passes through the water inlet pipe, water flow in the water inlet pipe drives driving slurry to rotate, the driving slurry drives the fan-shaped check block to rotate, the fan-shaped check block rotates and is alternately blocked at the connection positions of the two sides of the control disc and the communicating pipe, water flows in the communicating pipes on the two sides of the control disc alternately, water flows in the two sides of the spray head alternately, the spray head is pushed to rotate around the rotating device by the water flow, the spray head can be driven to swing back and forth, the water spraying range of the spray head can be conveniently enlarged, the water quantity at each position is kept consistent, and the cleaning effect is good.
(2) According to the water outlet adjusting device and method for the water outlet of the windscreen wiper, the driving slurry and the balancing weight are arranged, the gravity of the fan-shaped check block is balanced by the balancing weight, the eccentric condition of the driving slurry during rotation is avoided, the spray head is arranged to be fan-shaped, the top of the spray head is provided with the plurality of groups of water outlet holes, water inside the spray head can be sprayed out in a divergent mode, and the water spraying range is convenient to further increase.
(3) According to the water outlet adjusting device and method for the water outlet of the windscreen wiper, the rotating device is arranged, when the spray head receives the thrust of water flow in the communicating pipe, the rotating shaft is driven to rotate in the rotating groove, the spring is compressed when the rotating shaft rotates, the rotating amplitude of the spray head is limited by the elasticity of the spring, different spring can be replaced for adaptation through different vehicle types, and the adaptability and the adjustability are good.
(4) According to the water outlet adjusting device and method for the water outlet of the windscreen wiper, the clockwork springs at the two ends of the rotating shaft are reversely arranged, the clockwork springs at one end are compressed when the rotating shaft rotates to one side, the clockwork springs at the other end are stretched, when the windscreen wiper rotates to the other side, the clockwork springs which are compressed originally are stretched, the swing amplitude of the spray head to the two sides can be kept the same, and the balance is good.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the control device of the present invention;
FIG. 4 is a schematic view of the internal structure of the control panel of the present invention;
fig. 5 is a schematic view of the internal structure of the rotating device of the present invention.
In the figure: 1. a spray head; 2. a water outlet hole; 3. a communicating pipe; 4. a control device; 41. a water inlet pipe; 42. a control panel; 43. a fixing seat; 44. a rotating shaft; 45. a fan-shaped stop block; 46. driving the slurry; 47. balancing weight; 5. a rotating device; 51. rotating the base; 52. a rotating groove; 53. a rotating shaft; 54. and a spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-3, the present invention provides a technical solution: a water outlet adjusting device of a water outlet of a windscreen wiper specifically comprises:
the spray head 1 is in a fan shape, water outlets 2 are formed in the top of the spray head 1, and a plurality of groups of water outlets 2 are uniformly distributed on the top of the spray head 1;
a communicating pipe 3, wherein the communicating pipe 3 is arranged at two sides of the spray head 1, one end of the communicating pipe 3 is communicated with the inside of the spray head 1, and one end of the communicating pipe 3 far away from the spray head 1 is communicated with a control device 4;
the rotating device 5 is arranged at the bottom of the spray head 1, and the bottom of the rotating device 5 is fixedly connected with the top of the control device 4;
the control device 4 includes:
the water inlet pipe 41, the top of the water inlet pipe 41 is communicated with the control panel 42, and the top of the control panel 42 is fixedly connected with the fixing seat 43;
the rotating shaft 44 is arranged in the control panel 42, and the top of the rotating shaft 44 is rotationally connected with the bottom of the inner wall of the control panel 42 through a bearing;
the fan-shaped stop block 45 is fixed on the side surface of the rotating shaft 44, grooves are formed in the top and the bottom of the fan-shaped stop block 45, and a balancing weight 47 is fixedly connected to the top of one side, away from the fan-shaped stop block 45, of the rotating shaft 44;
the top of the driving slurry 46 is fixedly connected with the rotating shaft 44, and one end of the driving slurry 46 away from the rotating shaft 44 is arranged inside the water inlet pipe 41.
When clean water passes through the water inlet pipe 41, the water flow in the water inlet pipe 41 drives the driving slurry 46 to rotate, the driving slurry 46 drives the fan-shaped baffle block 45 to rotate, the fan-shaped baffle block 45 rotates and is blocked at the connection positions of the two sides of the control disc 42 and the communication pipe 3 in turn, the inside of the communication pipe 3 at the two sides of the control disc 42 is alternately flowed, the two sides of the spray head 1 are alternately flowed, the spray head 1 is pushed by the water flow to rotate around the rotating device 5, the spray head 1 can be driven to swing back and forth to conveniently increase the water spraying range of the spray head 1, the water quantity at each place is kept consistent, the cleaning effect is good, the driving slurry 46 and the balancing weight 47 are arranged, the gravity of the fan-shaped baffle block 45 is balanced by the balancing weight 47, the eccentric situation when the driving slurry 46 rotates is avoided, the spray head 1 is arranged into a fan shape, the top is provided with a plurality of groups of water outlet holes 2, the water inside the spray head 1 can be divergently sprayed, and the water spraying range is conveniently further increased.
Embodiment two:
referring to fig. 1-5, the present invention provides a technical solution based on the first embodiment: the rotating device 5 comprises a rotating base 51, a rotating groove 52 is formed in the top of the rotating base 51, a rotating shaft 53 is rotatably connected to the inner wall of the rotating groove 52 through a bearing, spring springs 54 are arranged between the two ends of the rotating shaft 53 and the inner wall of the rotating groove 52, the bottom of the rotating base 51 is fixedly connected with the top of a fixed seat 43, the top of the rotating shaft 53 is fixedly connected with the bottom of a spray head 1, the arrangement directions of the spring springs 54 at the two ends of the rotating shaft 53 are opposite, the center end of the spring springs 54 is fixedly connected with the rotating shaft 53, the edge end of the spring springs 54 is fixedly connected with the inner wall of the rotating groove 52, the rotating device 5 is arranged, when the spray head 1 receives the thrust of water flow in the communicating pipe 3, the rotating shaft 53 drives the rotating shaft 53 to rotate in the rotating groove 52, the spring springs 54 are compressed when the rotating shaft 53 rotates, the rotating shaft 54 is limited by the elasticity of the spring springs 54, different types of the spring springs 54 can be replaced by different types of the spring springs 54 to adapt, the adaptability and the adjustability are good, the spring springs 54 at the two ends of the rotating shaft 53 are reversely arranged, the rotating shaft 53 compresses one end of the spring 54 when the rotating shaft rotates to one side, and the other end is stretched, when the original spring 54 rotates to the other side, and the other end is stretched, when the other end is stretched, and the stretching spring 54 is kept to the opposite, and the original spring 54 and can be well balanced.
Embodiment III:
according to the water outlet adjusting device of the water outlet of the windscreen wiper, the use method of the water outlet adjusting device of the water outlet of the windscreen wiper is provided, and the method comprises the following steps:
s1, when clean water passes through a water inlet pipe, water flow in the water inlet pipe drives driving slurry to rotate, the driving slurry drives a fan-shaped stop block to rotate, the fan-shaped stop block rotates and is alternately blocked at the connection positions of two sides of a control panel and a communicating pipe, and water flows alternately in the communicating pipes at two sides of the control panel;
s2, alternately feeding water to two sides of the spray head, wherein water flow pushes the spray head to drive the rotating shaft to rotate back and forth in the rotating groove, the spring at one end is compressed when the rotating shaft rotates, and the spring at the other end is stretched at the same time;
s3, when the spray head and the rotating shaft rotate back and forth, water in the spray head is discharged from the water outlet under the action of water pressure, and water sprayed out of the top of the spray head falls on the front windshield in a fan shape.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A water outlet adjusting device of a water outlet of a windscreen wiper specifically comprises:
the shower nozzle (1), this shower nozzle (1) sets up to fan-shaped, apopores (2) have been seted up at shower nozzle (1) top, apopores (2) are provided with the multiunit and evenly distributed at shower nozzle (1) top;
the communicating pipe (3) is arranged at two sides of the spray head (1), one end of the communicating pipe (3) is communicated with the inside of the spray head (1), and one end of the communicating pipe (3) far away from the spray head (1) is communicated with the control device (4);
the rotating device (5) is arranged at the bottom of the spray head (1), and the bottom of the rotating device (5) is fixedly connected with the top of the control device (4);
the water outlet adjusting device of the water outlet of the windscreen wiper is characterized in that: the control device (4) comprises:
the water inlet pipe (41), the top of the water inlet pipe (41) is communicated with the control disc (42), and the top of the control disc (42) is fixedly connected with the fixing seat (43);
the rotating shaft (44) is arranged inside the control panel (42), and the top of the rotating shaft (44) is rotationally connected with the bottom of the inner wall of the control panel (42) through a bearing;
the fan-shaped stop block (45) is fixed on the side face of the rotating shaft (44), grooves are formed in the top and the bottom of the fan-shaped stop block (45), and a balancing weight (47) is fixedly connected to the top of one side, away from the fan-shaped stop block (45), of the rotating shaft (44);
the top of the driving slurry (46) is fixedly connected with the rotating shaft (44), and one end of the driving slurry (46) far away from the rotating shaft (44) is arranged in the water inlet pipe (41);
the rotating device (5) comprises a rotating base (51), a rotating groove (52) is formed in the top of the rotating base (51), a rotating shaft (53) is rotatably connected to the inner wall of the rotating groove (52) through a bearing, and a clockwork spring (54) is arranged between two ends of the rotating shaft (53) and the inner wall of the rotating groove (52);
the two ends of the rotating shaft (53) are opposite in arrangement direction of the clockwork spring (54), the center end of the clockwork spring (54) is fixedly connected with the rotating shaft (53), and the edge end of the clockwork spring (54) is fixedly connected with the inner wall of the rotating groove (52).
2. The water outlet adjusting device for a water outlet of a windscreen wiper according to claim 1, wherein: the top of the fixing seat (43) is fixedly connected with the bottom of the rotating device (5), and one end of the communicating pipe (3) far away from the spray head (1) is communicated with the control panel (42).
3. The water outlet adjusting device for a water outlet of a windscreen wiper according to claim 1, wherein: the communicating pipe (3) is made of an elastic hose, and the side surface of the fan-shaped stop block (45) is opposite to the communicating pipe (3) and the communicating position of the control panel (42).
4. The water outlet adjusting device for a water outlet of a windscreen wiper according to claim 1, wherein: the weight of the balancing weight (47) is the same as that of the fan-shaped stop block (45), and the driving slurry (46) is rotationally connected with the water inlet pipe (41) through a bracket. .
5. The water outlet adjusting device for a water outlet of a windscreen wiper according to claim 1, wherein: the bottom of the rotating base (51) is fixedly connected with the top of the fixing seat (43), and the top of the rotating shaft (53) is fixedly connected with the bottom of the spray head (1).
6. The use method of the water outlet regulating device of the water outlet of the windscreen wiper, which is disclosed in claim 1, comprises the following steps:
s1, when clean water passes through a water inlet pipe, water flow in the water inlet pipe drives driving slurry to rotate, the driving slurry drives a fan-shaped stop block to rotate, the fan-shaped stop block rotates and is alternately blocked at the connection positions of two sides of a control panel and a communicating pipe, and water flows alternately in the communicating pipes at two sides of the control panel;
s2, alternately feeding water to two sides of the spray head, wherein water flow pushes the spray head to drive the rotating shaft to rotate back and forth in the rotating groove, the spring at one end is compressed when the rotating shaft rotates, and the spring at the other end is stretched at the same time;
s3, when the spray head and the rotating shaft rotate back and forth, water in the spray head is discharged from the water outlet under the action of water pressure, and water sprayed out of the top of the spray head falls on the front glass in a fan shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499720.3A CN114132292B (en) | 2021-12-09 | 2021-12-09 | Device and method for adjusting water outlet of windscreen wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111499720.3A CN114132292B (en) | 2021-12-09 | 2021-12-09 | Device and method for adjusting water outlet of windscreen wiper |
Publications (2)
| Publication Number | Publication Date |
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| CN114132292A CN114132292A (en) | 2022-03-04 |
| CN114132292B true CN114132292B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111499720.3A Active CN114132292B (en) | 2021-12-09 | 2021-12-09 | Device and method for adjusting water outlet of windscreen wiper |
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| CN (1) | CN114132292B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116293605B (en) * | 2023-02-16 | 2023-09-22 | 河北艺能锅炉有限责任公司 | Environment-friendly flue gas waste heat recovery utilizes boiler |
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|---|---|---|---|---|
| US5417370A (en) * | 1986-11-18 | 1995-05-23 | Kah, Jr.; Carl L. C. | Transmission device having an adjustable oscillating output |
| WO2007011424A1 (en) * | 2005-07-15 | 2007-01-25 | Clearman Joseph H | Spray apparatus and dispensing tubes therefore |
| CN203620853U (en) * | 2013-12-31 | 2014-06-04 | 慈溪市天硕工贸有限公司 | Shunting device of rocker arm sprayer |
| CN105584461A (en) * | 2014-11-07 | 2016-05-18 | 现代自动车株式会社 | System For Controlling Spraying Of Washer Fluid Of Wiper Blade |
| CN214077312U (en) * | 2020-12-21 | 2021-08-31 | 王婷 | Variable speed type far and near alternative rotary spray head |
-
2021
- 2021-12-09 CN CN202111499720.3A patent/CN114132292B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5417370A (en) * | 1986-11-18 | 1995-05-23 | Kah, Jr.; Carl L. C. | Transmission device having an adjustable oscillating output |
| WO2007011424A1 (en) * | 2005-07-15 | 2007-01-25 | Clearman Joseph H | Spray apparatus and dispensing tubes therefore |
| CN203620853U (en) * | 2013-12-31 | 2014-06-04 | 慈溪市天硕工贸有限公司 | Shunting device of rocker arm sprayer |
| CN105584461A (en) * | 2014-11-07 | 2016-05-18 | 现代自动车株式会社 | System For Controlling Spraying Of Washer Fluid Of Wiper Blade |
| CN214077312U (en) * | 2020-12-21 | 2021-08-31 | 王婷 | Variable speed type far and near alternative rotary spray head |
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|---|---|
| CN114132292A (en) | 2022-03-04 |
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