CN217778569U - Windshield wiper pressing force adjusting device - Google Patents
Windshield wiper pressing force adjusting device Download PDFInfo
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- CN217778569U CN217778569U CN202220386389.8U CN202220386389U CN217778569U CN 217778569 U CN217778569 U CN 217778569U CN 202220386389 U CN202220386389 U CN 202220386389U CN 217778569 U CN217778569 U CN 217778569U
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Abstract
The invention discloses a pressing force adjusting device for a windshield wiper, belonging to the technical field of windshield wiper systems; comprises an output shaft, a swing arm, a support arm, a spring, an adjusting screw and a locking nut; the swing arm is coaxially sleeved on the output shaft; the support arm is hinged with a lug at the upper end of the swing arm through a rotating shaft, the middle part of the inner side of the support arm is provided with a radial bulge, and the bulge is provided with a threaded hole; the adjusting screw is screwed into the threaded hole of the support arm, two ends of the adjusting screw are respectively provided with a locking nut through threads, the axial displacement of the adjusting screw is adjusted through the locking nut, and the axial position of the adjusting screw is locked; the bottom of the adjusting screw is provided with a circular ring structure; one end of the spring is hung in the circular hole of the adjusting screw, and the other end of the spring is hung in the lug through hole at the lower end of the swing arm; the axial displacement of the adjusting screw is adjusted by rotating the locking nut, the spring is stretched and deformed, and the axial stretching force of the spring is applied by the deformation of the spring, so that the pressing force of the windshield wiper is adjusted. The windshield wiper pressing force adjusting device is simple and clear in structure and simple and convenient to install and operate.
Description
Technical Field
The invention belongs to the technical field of windshield wiper systems, and particularly relates to a windshield wiper pressing force adjusting device.
Background
The pressing force adjusting device for the airplane windshield wiper is used for adjusting the pressing force of the windshield wiper blade on the glass after the windshield wiper is installed on the nose glass so as to ensure the scraping degree of the windshield wiper, further ensure that a driver has a clear windshield view and ensure the flight safety.
The pressing force adjusting device of the windshield wiper of the common airplane is arranged in the wiper arm assembly, and the purpose of applying the pressing force of the wiper blade is achieved by adjusting the deformation amount of the spring. However, when the wiper arm assembly is initially assembled, the spring is stretched to generate a certain deformation, so that when the wiper arm assembly is assembled, the support arm must rotate by a certain angle around the rotating shaft for convenient assembly, and meanwhile, the spring is stretched by a certain deformation to insert the pin on the support arm to fix the wiper arm, so that the assembly of the wiper arm assembly is convenient. And in the process of lifting the brush arm assembly, the transitional deformation of the spring can be caused, the service life of the spring is reduced, the reliability of the product is reduced, and the maintainability can not meet the requirements.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides the windshield wiper pressing force adjusting device, one end of the spring is arranged in an adjusting screw hole on the support arm, the other end of the spring is arranged in an earring hole of the swing arm, one end of the spring is in a free state before product assembly and installation, and the situation that the spring is excessively stretched and deformed is avoided. The problem of the windscreen wiper installation in-process installation difficulty and cause the spring transition to warp, arouse product life to reduce is solved.
The technical scheme of the invention is as follows: a windshield wiper pressing force adjusting device comprises an output shaft, a swing arm and a support arm, wherein the swing arm is coaxially sleeved on the output shaft and can synchronously rotate; the root part of the support arm is hinged on the swing arm, and the head part of the support arm is connected with the brush piece assembly through the straight rod; the method is characterized in that: the device also comprises a spring, an adjusting screw and a locking nut;
the swing arm is a cylinder with a central through hole, lugs are arranged at the upper end and the lower end of the same side of the cylindrical surface, through holes are formed in the lugs, and the axial direction of each through hole is vertical to the axial direction of the central through hole of the swing arm;
the root part of the support arm is hinged with a lug at the upper end of the swing arm through a rotating shaft and can rotate around the rotating shaft; the circumferential surface of the middle part of the inner side of the support arm is provided with a radial bulge, the bulge is provided with a threaded hole, and the axial direction of the threaded hole is parallel to the axial direction of the support arm;
the adjusting screw is screwed into the threaded hole of the support arm, two ends of the adjusting screw are respectively provided with a locking nut through threads, the axial displacement of the adjusting screw is adjusted through the locking nut, and the axial position of the adjusting screw is locked; the bottom of the adjusting screw is provided with a circular ring structure along the axial extension direction, and the axial direction of the circular ring is perpendicular to the axial direction of the adjusting screw; one end of the spring is hung in the circular hole of the adjusting screw, and the other end of the spring is hung in the lug through hole at the lower end of the swing arm;
the locking nut is rotated to adjust the axial displacement of the adjusting screw, the spring is stretched and deformed, the axial stretching force of the spring is applied through the deformation of the spring, the axial stretching force of the spring is decomposed into force along the axial direction of the support arm and force perpendicular to the direction of the support arm, and the pressing force of the windshield wiper is adjusted.
The further technical scheme of the invention is as follows: and the output shaft and the swing arm are respectively provided with an external spline and an internal spline which are connected in a matching way through the internal spline and the external spline.
The further technical scheme of the invention is as follows: the end of the output shaft is coaxially provided with a screw, and the diameter of the head of the screw is larger than the diameter of an inner hole of the swing arm and is used for limiting the axial displacement of the swing arm.
Advantageous effects
The invention has the beneficial effects that: one end of the spring is in a free state before assembly and installation, so that the situation that the spring is excessively stretched and deformed is avoided; after the windshield wiper is installed, the hook at the free end of the spring is installed in the earring hole of the swing arm, the axial displacement of the adjusting screw is adjusted by rotating the locking nut, the extension spring deforms, and the pressing force of the wiper blade is applied. The application of the windshield wiper pressing force adjusting device can simplify the assembly of the windshield wiper arm, eliminate the spring transition deformation caused in the product installation process and reduce the service life.
The windshield wiper pressing force adjusting device is simple and clear in structure and convenient to install and operate, the problem that the permanent deformation and the service life reduction caused by the fact that the spring is stretched in a transition mode in the installation process of the windshield wiper can be solved without inserting a pin into the windshield wiper arm assembly to lift the windshield wiper before installation, and reliability, maintainability and product service life are improved.
Drawings
Fig. 1 is a schematic structural view of a wiper pressing force adjusting device according to the present invention.
Description of reference numerals: 1-an output shaft; 2, swinging an arm; 3-screws; 4, rotating the shaft; 5, a support arm; 6-a spring; 7-adjusting screws; 8, locking the nut.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
A wiper pressing force adjusting device of the present invention is described in detail below with reference to fig. 1:
in the pressing force adjusting device of the windshield wiper, the upper end of an output shaft 1 is provided with an external spline, an oscillating arm 2 is provided with an internal spline, the output shaft 1 is matched with the oscillating arm 2 through internal and external spline teeth, and the output shaft 1 can drive the oscillating arm 2 to oscillate through the matching of the spline teeth; the screw 3 is arranged at the top end of the output shaft 1 and used for limiting the axial displacement of the swing arm 2 along the output shaft 1; the support arm 5 is connected with the swing arm 2 through the rotating shaft 4 and can axially rotate around the rotating shaft 4; one end of the spring 6 is hooked in a lug hole at the lower end of the swing arm 2, and the other end of the spring is hooked in a circular hole of the adjusting screw 7.
Adjusting screw 7 is installed in the through-hole on the support arm to at 7 downtheholes spring 6 couples of installing of adjusting screw, have lock nut 8 on adjusting screw 7, after rotatory lock nut 8 adjusted adjusting screw 7 to suitable position, deadly with lock nut 8 lock, prevent to become flexible.
The locking nut 8 is rotated to adjust the axial displacement of the adjusting screw 7, so that the spring 6 is stretched and deformed, and the axial stretching force of the spring 6 is applied through the deformation of the spring 6; the axial tensile force of the spring 6 is decomposed into a force in the axial direction of the arm 5 and a force in the direction perpendicular to the arm 5 (the force in the perpendicular direction is the pressing force of the windshield wiper), and the pressing force of the windshield wiper is adjusted.
After the windshield wiper arm is arranged on the aircraft windshield, the hook at the free end of the spring 6 is arranged in an earring hole of the swing arm 2, the adjusting screw 7 can be driven to move axially along with the rotation of the locking nut 8, the spring can be stretched and deformed to extend when moving rightwards, the pressing force of the wiper blade is applied, and after the pressing force of the wiper blade is adjusted to the specified requirement, the locking nut 8 is used for locking the wiper blade, and the pressing force adjustment of the wiper is completed.
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 (3)
1. A pressing force adjusting device for a windshield wiper comprises an output shaft, a swing arm and a support arm, wherein the swing arm is coaxially sleeved on the output shaft and can synchronously rotate; the root part of the support arm is hinged on the swing arm, and the head part of the support arm is connected with the brush piece assembly through the straight rod; the method is characterized in that: the device also comprises a spring, an adjusting screw and a locking nut;
the swing arm is a cylinder with a central through hole, lugs are arranged at the upper end and the lower end of the same side of the cylindrical surface, through holes are formed in the lugs, and the axial directions of the through holes are perpendicular to the axial direction of the central through hole of the swing arm;
the root part of the support arm is hinged with a lug at the upper end of the swing arm through a rotating shaft and can rotate around the rotating shaft; the circumferential surface of the middle part of the inner side of the support arm is provided with a radial bulge, the bulge is provided with a threaded hole, and the axial direction of the threaded hole is parallel to the axial direction of the support arm;
the adjusting screw is screwed into the threaded hole of the support arm, two ends of the adjusting screw are respectively provided with a locking nut through threads, the axial displacement of the adjusting screw is adjusted through the locking nut, and the axial position of the adjusting screw is locked; the bottom of the adjusting screw is provided with a circular ring structure along the axial extension direction, and the axial direction of the circular ring is perpendicular to the axial direction of the adjusting screw; one end of the spring is hung in the circular hole of the adjusting screw, and the other end of the spring is hung in the lug through hole at the lower end of the swing arm;
the locking nut is rotated to adjust the axial displacement of the adjusting screw, the spring is stretched and deformed, the axial stretching force of the spring is applied through the deformation of the spring, the axial stretching force of the spring is decomposed into force along the axial direction of the support arm and force perpendicular to the direction of the support arm, and the pressing force of the windshield wiper is adjusted.
2. The wiper pressing force adjusting device according to claim 1, characterized in that: and the output shaft and the swing arm are respectively provided with an external spline and an internal spline which are connected in a matching way through the internal spline and the external spline.
3. The wiper hold-down force adjustment device of claim 1, wherein: the end of the output shaft is coaxially provided with a screw, and the diameter of the head of the screw is larger than the diameter of an inner hole of the swing arm and used for limiting the axial displacement of the swing arm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021230438720 | 2021-12-06 | ||
| CN202123043872 | 2021-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217778569U true CN217778569U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220386389.8U Active CN217778569U (en) | 2021-12-06 | 2022-02-24 | Windshield wiper pressing force adjusting device |
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| CN (1) | CN217778569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853961A (en) * | 2023-01-31 | 2023-03-28 | 杭州静之源噪声控制技术有限公司 | Vibration damper for elevator traction machine |
-
2022
- 2022-02-24 CN CN202220386389.8U patent/CN217778569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853961A (en) * | 2023-01-31 | 2023-03-28 | 杭州静之源噪声控制技术有限公司 | Vibration damper for elevator traction machine |
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