CN112477810A - General windshield wiper pressure adjustment device of aircraft - Google Patents
General windshield wiper pressure adjustment device of aircraft Download PDFInfo
- Publication number
- CN112477810A CN112477810A CN202011360777.0A CN202011360777A CN112477810A CN 112477810 A CN112477810 A CN 112477810A CN 202011360777 A CN202011360777 A CN 202011360777A CN 112477810 A CN112477810 A CN 112477810A
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- China
- Prior art keywords
- plate
- spring
- support arm
- pressure
- wiper
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Classifications
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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
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3411—Wiper arms; Mountings therefor with means for varying wiper-blade pressure on windshield during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention relates to a pressure regulating device for a general windshield wiper of an airplane, belonging to the field of aviation windshield wiper devices; comprises a support rod, a swinging component and a plate spring; the swinging component comprises a pressure adjusting screw, a base plate, an adjusting plate, a spring, a support arm and a rivet and is arranged between the support rod and the plate spring; one end surface of the backing plate is of a convex arc structure and is matched with the arc groove of the support rod; the adjusting plate is of a triangular block structure and is positioned at the joint of the lug of the supporting rod and the supporting arm; the cross section of the support arm is of an inverted U-shaped structure, two ends of the support arm are open, the depth of the U-shaped structure of the support arm is gradually reduced from one end to the other end along the length direction of the support arm, and the inner cavity of the support arm is used for mounting the spring; the pressure adjusting screw is rotated to drive the adjusting plate to rotate, so that the spring is pulled and pressed, and the pressure of the plate spring is adjusted; the plate spring used by the device not only serves as an extension spring to adjust the pressure of the wiper rod piece, but also provides certain pressure for the wiper blade; the part machining precision and the installation precision are high.
Description
Technical Field
The invention belongs to the field of aviation windshield wiper devices, and particularly relates to a pressure adjusting device for a general windshield wiper of an airplane.
Background
At present, an aviation windshield wiper is different from an automobile windshield wiper, installation space is complex, so that installation errors are accumulated greatly, the flying speed of a helicopter is higher than the general automobile speed and lower than the flying speed of a conveyor, the wiping pressure of the windshield wiper is required to be between the general automobile speed and the general conveyor flying speed, the wiping pressure is required to be between 16N and 23N, the appearance of the glass of the windshield wiper is increased along with the development of a tour and sightseeing helicopter, and the curvature change is larger. The pressure regulating device commonly used in the aviation windshield wiper at present has three types:
1. "a wiper single spring pressure adjustment device" described in application No. 201911116734.5;
2. "a wiper double spring pressure adjustment device" described in application No. 201911116940.6;
3. the wiper product pressure regulating device described in application No. 201521020002.3.
1 and 2, the pressure adjusting devices are both tension spring pressure adjusting devices, and the pressure adjusting principle is that an adjusting wheel in threaded connection with an adjusting screw is driven to rotate by rotating the adjusting screw, the supporting sheet is pulled to move by rotating the adjusting wheel to elongate the spring, and the tension of the spring is converted into the pressure of a wiper rod on the wiper sheet; the pressure adjusting device has a complex structure and a large number of parts, and the machining precision of the parts and the installation precision of the windshield wiper must be strictly controlled.
3 the structure of the pressure adjusting device of the windshield wiper product is a plate spring pressure adjusting device, although the structure of the tension spring pressure adjusting device is optimized compared with that of the tension spring pressure adjusting device 1 and 2, the plate spring pressure adjusting device has a small application range and is only suitable for the condition that the curvature change of the glass in the wiping area is small, and when the curvature change is large, the plate spring pressure adjusting device cannot provide a required pressure value in the wiping area after being adjusted.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects in the prior art, the invention provides the universal wiper pressure adjusting device for the airplane, which combines the advantages of large pressure adjusting range of the tension spring pressure adjusting device and simple structure of the plate spring pressure adjusting device, and simultaneously avoids the respective defects. The pressure adjusting screw and the adjusting plate are installed on the windshield wiper swinging block, the adjusting plate is driven to rotate through rotation of the pressure adjusting screw, so that the extension spring is stretched, and the tensile force of the spring is converted into the pressure of the plate spring on the windshield wiper.
The technical scheme of the invention is as follows: a pressure adjusting device for a general wiper of an airplane comprises a support rod and a plate spring; the method is characterized in that: the swinging component is arranged between the support rod and the plate spring;
two parallel and opposite lug plates are arranged at one end of the support rod connected with the swinging component, and coaxial first through holes are formed in the two lug plates; the upper ends of the two lug plates are provided with arc grooves with the same position and structure;
the swing component comprises a pressure adjusting screw, a base plate, an adjusting plate, a spring, a support arm and a rivet;
one end face of the backing plate is of a convex arc structure and is installed in a matched mode with the arc groove of the supporting rod; the upper end surface of the backing plate is provided with a through hole for penetrating the pressure adjusting screw and limiting the radial displacement of the pressure adjusting screw;
the adjusting plate is of a triangular block structure and is positioned at the joint of the lug of the supporting rod and the supporting arm; the end face of a first vertex angle of the adjusting plate is provided with a through hole, a groove is formed between two end faces of a second vertex angle, coaxial pin shaft holes are formed in the groove walls on two sides, the first pin shaft penetrates through and is fixed in the two pin shaft holes, a threaded hole is formed in the radial direction of the first pin shaft, and the threaded hole is located in the groove of the second vertex angle and is meshed with the external thread of the pressure adjusting screw; a second pin shaft is vertically arranged at the third vertex angle of the adjusting plate, penetrates through two end faces of the adjusting plate and is used for being connected with one end of the spring;
the cross section of the support arm is of an inverted U-shaped structure, two ends of the support arm are open, the depth of the support arm U-shaped structure is gradually reduced from one end to the other end along the length direction of the support arm, an inner cavity of the support arm U-shaped structure is used for mounting the spring, and the other end of the spring is connected with the inner wall of the end with the small depth of the support arm through a rivet; the two opposite positions of the two side walls at the end with the large depth of the support arm are provided with second through holes which are coaxial with the first through hole of the support rod and the through hole of the adjusting plate, and the second through holes sequentially penetrate through the through hole of the adjusting plate, the second through hole of the lug piece of the support rod and the second through hole of the support arm through rivets to hinge the two through holes;
the plate spring is a plate-shaped bent piece, one end of the plate spring is connected with the end with the small depth of the support arm through a rivet, and the other end of the plate spring is connected with the wiper rod.
The further technical scheme of the invention is as follows: the support rod is used for connecting the wiper rotating shaft and the swinging component, the middle part of the support rod is a rod with an oval section, and the length of the support rod is adjusted according to the actual use requirement; the other end of the supporting rod is in a goose egg shape, and a circular through hole is formed in the curved surface of the supporting rod and used for installing a windshield wiper rotating shaft.
The further technical scheme of the invention is as follows: the thickness and the length of the plate spring are adjusted according to actual pressure requirements.
The further technical scheme of the invention is as follows: three apex angle departments of regulating plate are the arc surface, the rotation of regulating plate when being convenient for screw up pressure adjusting screw.
The further technical scheme of the invention is as follows: the regulating plate is an equilateral triangle block.
The further technical scheme of the invention is as follows: the axial direction of the threaded hole at the second vertex angle of the adjusting plate is parallel to the opposite side of the second vertex angle.
Advantageous effects
The invention has the beneficial effects that: according to the invention, the pressure adjusting screw is rotated to drive the adjusting plate to rotate, so that the spring is pulled and pressed, and the pressure adjustment of the plate spring is realized; the pressure adjusting device comprises a pressure adjusting screw, a base plate, an adjusting plate and a spring, wherein the pressure adjusting screw, the base plate, the adjusting plate and the spring are installed in a matched mode, so that the problems that the structure of the tension spring pressure adjusting device in the background technology is complex, and the requirements on part machining precision and installation precision are high are solved; the problem that the plate spring pressure adjusting device in the background technology is small in application range is solved by combining the extension spring with the plate spring. The device can meet the requirements of different glass curved surfaces and pressures; the plate spring used by the device not only serves as an extension spring to adjust the pressure of the wiper rod piece, but also provides certain pressure for the wiper blade by the elasticity of the plate spring; the device is characterized in that the elliptic structure of the supporting rod also reduces the wind resistance of the windshield wiper to a certain extent, and effectively reduces the external energy loss of the windshield wiper device.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of a general wiper pressure regulating device for an aircraft according to the present invention.
FIG. 3 is a schematic view of a strut according to the present invention.
Fig. 4 is a schematic view of the structure of the backing plate of the present invention.
Fig. 5 is a schematic view of the pressure adjusting screw according to the present invention.
FIG. 6 is a schematic view of an adjusting plate according to the present invention.
FIG. 7 is a schematic view of a mounting arm structure according to the present invention.
Description of reference numerals: 1. a strut; 2. a pressure adjustment screw; 3. a base plate; 4. a first rivet; 5. an adjusting plate; 6. a support arm; 7. a spring; 8. a second rivet; 9. a third rivet; 10. a leaf spring.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 and 2, the general pressure regulating device for the aircraft windshield wiper comprises a support rod 1, a pressure regulating screw 2, a base plate 3, a first rivet 4, a regulating plate 5, a support arm 6, a spring 7, a second rivet 8, a third rivet 9 and a plate spring 10;
referring to fig. 3, the supporting rod 1 is used for connecting a wiper rotating shaft and a swinging component, the middle of the supporting rod is in an elliptic rod shape, the length of the supporting rod can be adjusted according to actual use requirements, one end of the supporting rod is in a goose-egg shape, a circular through hole is formed in the curved surface of the supporting rod and used for installing the wiper rotating shaft, two lug plates with coaxial first through holes are arranged at the other end of the supporting rod, grooves are formed in the upper end surfaces of the two lug plates, and a cavity is formed between the.
Referring to fig. 4, one side of the backing plate 3 is arch-shaped, and is placed in the groove of the lug plate of the support rod 1 to slide relatively, a through hole is formed in the upper end face of the backing plate, the pressure adjusting screw penetrates through the through hole of the pressure adjusting screw to be meshed with the pin shaft with the internal threaded hole at the second corner of the adjusting plate 5, and the backing plate 3 plays a role in axially supporting the pressure adjusting screw and also has a role in limiting the movement of the pressure adjusting screw in other directions.
Referring to fig. 6, the adjusting plate 5 is in a triangular block shape and is placed in the cavity of the lug of the support rod; a through hole is formed in the first vertex angle, a groove is formed between two end faces of the second vertex angle, coaxial pin shaft holes are formed in the groove walls on the two sides, the first pin shaft penetrates through and is fixed in the two pin shaft holes, a threaded hole is formed in the radial direction of the first pin shaft, and the threaded hole is located in the groove of the second vertex angle and is meshed with the external thread of the pressure adjusting screw 2; and a second pin shaft is vertically arranged at the third vertex angle, penetrates through two end faces of the adjusting plate and is connected with one end of the spring 7.
Referring to fig. 7, the support arm 6 is an inverted U-shaped structure with a closed top and an open bottom, both ends of the support arm are open, the depth in the U-shape gradually decreases from one end to the other end along the length direction of the support arm, an inner cavity of the support arm is used for mounting the spring 7, and the other end of the spring 7 is connected with the inner wall of the end with the small depth through a second rivet 8; the one end that 6 depths of support arm are little passes through third rivet 9 with leaf spring 10 is fixed, and the relative position is opened on the one end both sides wall that the depth is big has the second through-hole, with 1 auricle first through-hole of branch reaches the 5 through-holes of regulating plate are coaxial, will through first rivet 4 the through-hole of regulating plate the first through-hole of branch auricle reaches support arm second through-hole three is articulated.
The invention relates to a general pressure regulating device for an aircraft windshield wiper, which is characterized in that a support rod 1, a support arm 6 and a regulating plate 5 are connected through a rivet I4, the support rod 1 is arranged on a windshield wiper rotating shaft through a circular through hole of the support rod, and the support arm 6 and the regulating plate 5 can rotate around the first rivet 4; the head of the pressure adjusting screw 2 is provided with an inner hexagonal hole, the screw rod part is provided with threads, the pressure adjusting screw 2 penetrates through a through hole on the end surface of the backing plate 3 and a cavity between two lug plates of the support rod 1 to be meshed with a threaded hole of the adjusting plate 5, the pressure adjusting screw is rotated through the inner hexagonal hole on the large end surface of the pressure adjusting screw, and the adjusting plate 5 is meshed with the pressure adjusting screw 2 and rotates around the first rivet 4; the spring 7 is pulled through a pin shaft at the third vertex angle of the adjusting plate 5, the spring 7 pulls the support arm 6 to rotate around the first rivet 4, the tensile force of the spring 7 is converted into the pressure of the support arm 6 to the plate spring 10, and finally the plate spring 10 converts the self elastic force and the elastic force of the spring 7 into the pressure of the wiper blade.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (6)
1. A pressure adjusting device for a general wiper of an airplane comprises a support rod and a plate spring; the method is characterized in that: the swinging component is arranged between the support rod and the plate spring;
two parallel and opposite lug plates are arranged at one end of the support rod connected with the swinging component, and coaxial first through holes are formed in the two lug plates; the upper ends of the two lug plates are provided with arc grooves with the same position and structure;
the swing component comprises a pressure adjusting screw, a base plate, an adjusting plate, a spring, a support arm and a rivet;
one end face of the backing plate is of a convex arc structure and is installed in a matched mode with the arc groove of the supporting rod; the upper end surface of the backing plate is provided with a through hole for penetrating the pressure adjusting screw and limiting the radial displacement of the pressure adjusting screw;
the adjusting plate is of a triangular block structure and is positioned at the joint of the lug of the supporting rod and the supporting arm; the end face of a first vertex angle of the adjusting plate is provided with a through hole, a groove is formed between two end faces of a second vertex angle, coaxial pin shaft holes are formed in the groove walls on two sides, the first pin shaft penetrates through and is fixed in the two pin shaft holes, a threaded hole is formed in the radial direction of the first pin shaft, and the threaded hole is located in the groove of the second vertex angle and is meshed with the external thread of the pressure adjusting screw; a second pin shaft is vertically arranged at the third vertex angle of the adjusting plate, penetrates through two end faces of the adjusting plate and is used for being connected with one end of the spring;
the cross section of the support arm is of an inverted U-shaped structure, two ends of the support arm are open, the depth of the support arm U-shaped structure is gradually reduced from one end to the other end along the length direction of the support arm, an inner cavity of the support arm U-shaped structure is used for mounting the spring, and the other end of the spring is connected with the inner wall of the end with the small depth of the support arm through a rivet; the two opposite positions of the two side walls at the end with the large depth of the support arm are provided with second through holes which are coaxial with the first through hole of the support rod and the through hole of the adjusting plate, and the second through holes sequentially penetrate through the through hole of the adjusting plate, the second through hole of the lug piece of the support rod and the second through hole of the support arm through rivets to hinge the two through holes;
the plate spring is a plate-shaped bent piece, one end of the plate spring is connected with the end with the small depth of the support arm through a rivet, and the other end of the plate spring is connected with the wiper rod.
2. The aircraft utility wiper pressure regulator of claim 1, wherein: the support rod is used for connecting the wiper rotating shaft and the swinging component, the middle part of the support rod is a rod with an oval section, and the length of the support rod is adjusted according to the actual use requirement; the other end of the supporting rod is in a goose egg shape, and a circular through hole is formed in the curved surface of the supporting rod and used for installing a windshield wiper rotating shaft.
3. The aircraft utility wiper pressure regulator of claim 1, wherein: the thickness and the length of the plate spring are adjusted according to actual pressure requirements.
4. The aircraft utility wiper pressure regulator of claim 1, wherein: three apex angle departments of regulating plate are the arc surface, the rotation of regulating plate when being convenient for screw up pressure adjusting screw.
5. The aircraft utility wiper pressure regulator of claim 1, wherein: the regulating plate is an equilateral triangle block.
6. The aircraft utility wiper pressure regulator of claim 1, wherein: the axial direction of the threaded hole at the second vertex angle of the adjusting plate is parallel to the opposite side of the second vertex angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011360777.0A CN112477810A (en) | 2020-11-27 | 2020-11-27 | General windshield wiper pressure adjustment device of aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011360777.0A CN112477810A (en) | 2020-11-27 | 2020-11-27 | General windshield wiper pressure adjustment device of aircraft |
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| Publication Number | Publication Date |
|---|---|
| CN112477810A true CN112477810A (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011360777.0A Pending CN112477810A (en) | 2020-11-27 | 2020-11-27 | General windshield wiper pressure adjustment device of aircraft |
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| CN (1) | CN112477810A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3428710A1 (en) * | 1984-08-03 | 1986-02-13 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Windscreen washer system for motor vehicles |
| CN203902487U (en) * | 2014-06-08 | 2014-10-29 | 宁波市镇海阳光交通器材有限公司 | Pressure adjustable windshield wiper |
| CN203902494U (en) * | 2014-06-04 | 2014-10-29 | 宁波市镇海阳光交通器材有限公司 | Horizontally moving type windshield wiper |
| CN204020817U (en) * | 2014-07-01 | 2014-12-17 | 上海航空机械有限公司 | Helicopter windscreen wiper device |
| CN205311555U (en) * | 2015-12-09 | 2016-06-15 | 西安庆安电气控制有限责任公司 | Windshield wiper product pressure adjustment assembly |
| CN106347305A (en) * | 2016-10-27 | 2017-01-25 | 奇瑞汽车股份有限公司 | Windscreen wiper with automatic adjustment of wiping-arm pressing force |
| CN106828417A (en) * | 2017-03-14 | 2017-06-13 | 重庆市永川区渝林机械厂 | Automobile list Wiper system |
| CN207481858U (en) * | 2017-06-11 | 2018-06-12 | 慈溪市龙山汽配有限公司 | A kind of adjustable wiper of pressing force |
| CN109415034A (en) * | 2016-06-27 | 2019-03-01 | 日本雨刷片株式会社 | Wiper arm |
| CN110979261A (en) * | 2019-11-15 | 2020-04-10 | 西安庆安电气控制有限责任公司 | Single-spring pressure adjusting device for windshield wiper |
-
2020
- 2020-11-27 CN CN202011360777.0A patent/CN112477810A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3428710A1 (en) * | 1984-08-03 | 1986-02-13 | SWF Auto-Electric GmbH, 7120 Bietigheim-Bissingen | Windscreen washer system for motor vehicles |
| CN203902494U (en) * | 2014-06-04 | 2014-10-29 | 宁波市镇海阳光交通器材有限公司 | Horizontally moving type windshield wiper |
| CN203902487U (en) * | 2014-06-08 | 2014-10-29 | 宁波市镇海阳光交通器材有限公司 | Pressure adjustable windshield wiper |
| CN204020817U (en) * | 2014-07-01 | 2014-12-17 | 上海航空机械有限公司 | Helicopter windscreen wiper device |
| CN205311555U (en) * | 2015-12-09 | 2016-06-15 | 西安庆安电气控制有限责任公司 | Windshield wiper product pressure adjustment assembly |
| CN109415034A (en) * | 2016-06-27 | 2019-03-01 | 日本雨刷片株式会社 | Wiper arm |
| CN106347305A (en) * | 2016-10-27 | 2017-01-25 | 奇瑞汽车股份有限公司 | Windscreen wiper with automatic adjustment of wiping-arm pressing force |
| CN106828417A (en) * | 2017-03-14 | 2017-06-13 | 重庆市永川区渝林机械厂 | Automobile list Wiper system |
| CN207481858U (en) * | 2017-06-11 | 2018-06-12 | 慈溪市龙山汽配有限公司 | A kind of adjustable wiper of pressing force |
| CN110979261A (en) * | 2019-11-15 | 2020-04-10 | 西安庆安电气控制有限责任公司 | Single-spring pressure adjusting device for windshield wiper |
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Application publication date: 20210312 |