Automobile windscreen wiper output shaft detection mechanism and detection method

Abstract

The invention discloses an automobile windscreen wiper output shaft detection mechanism and method, and the mechanism comprises a positioning plate, one side of the top end of the positioning plate is fixedly provided with a first positioning disc, the top end of the first positioning disc is fixedly provided with a second positioning disc, and the interior of the positioning plate is fixedly provided with a fixed bushing. According to the detection mechanism for the output shaft of the automobile windscreen wiper, the parts are circular parts, only the outer circle grinding is needed to grind and match the clearance, the flat grinding and match grinding of the sliding surface is needed to ensure the luminosity and the sliding flexibility, the grinding by a bench worker is not needed during the final assembly, the whole processing technology is very simple, the cost is low, and the detection efficiency is high. The cost is low; a closed ring is formed between the positioning discs, lubricating oil can be added without flowing out, rustiness between parts is avoided, and smooth sliding is guaranteed; the detection mechanism is high in applicability and low in cost, is used in a production field, and has a great reference value in the aspect of detection and popularization of output shafts of other front and back scraping products.

Description

Technical Field

[0001] The invention relates to the technical field of automobile windshield wipers, and in particular to an automobile windshield wiper output shaft detection mechanism and a detection method. Background Art

[0002] The main function of a car wiper is to remove rain, snow and dust from the windshield to ensure driving safety. The wiper is one of the main safety devices of a car. It can remove raindrops and snowflakes from the car window on snowy or rainy days to ensure the driver's clear vision. The motor of the wiper drives the output shaft through the worm gear on the armature shaft, and drives the output gear through the idler and idler shaft. Finally, the output shaft controls the output arm connected to the wiper connecting rod. When the motor rotates, the output arm and the connecting rod are driven to move in the forward and backward directions, thereby realizing the cleaning function of the wiper. The main function of the output shaft on the car wiper is to drive the wiper connecting rod to achieve forward and backward movement. The output shaft of the car wiper needs to be tested by a detection mechanism before use.

[0003] However, traditional testing institutions have the following disadvantages: (1) The traditional detection mechanism uses 7 square slider parts to form a gap of 1.5mm in the X and Y directions. It is limited to movement in the X and Y directions and cannot move in other directions. The marked position tolerance is 4mm on the cylinder, and the range is qualified. However, the traditional detection mechanism structure has design defects; (2) Most parts are square, and processing requires multiple flat grinding, rough grinding of tools, and fine grinding to match the gap. When the fitter assembles, it is necessary to grind each mating surface to ensure smooth sliding. The processing technology is complicated and the cost is high; (3) The mating surfaces of the sliders of the traditional detection mechanism are exposed and prone to rust. They cannot slide when in use and cannot be used. The site is shut down and the fitter needs to go to the site to dismantle and grind them again for repair, which seriously affects the normal production. (4) The spring on the traditional detection mechanism is a purchased tension spring. The hook parts are not easy to bend and process. The spring is exposed to the outside and is prone to rust. After a long period of use, it is easy to be broken and needs to be replaced, which increases the maintenance cost of the detection mechanism. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle wiper output shaft detection mechanism and a detection method to solve the problem that the traditional detection mechanism proposed in the above background technology uses 7 square slider parts to form a 1.5mm gap in the X and Y directions, which is limited to movement in the X and Y directions and cannot move in other directions. The marked position tolerance is 4mm on the cylinder, and the range is qualified. However, the traditional detection mechanism structure has design defects; most of the parts are square, and the processing requires multiple flat grinding, tool rough grinding, and fine grinding to match the gap. The fitter needs to grind each matching surface during assembly to ensure smooth sliding, and the processing technology is complicated and the cost is high; the matching surfaces of the sliders of the traditional detection mechanism are exposed and easy to rust, and they cannot slide when used and cannot be used. The on-site work is stopped, and the fitter needs to go to the use site to disassemble and grind them again, and return them for repair, which seriously affects the normal production; the spring on the traditional detection mechanism is an externally purchased tension spring, and the hook part is not easy to bend and process. The spring is exposed and easy to rust. After a long time of use, it is easy to be broken and needs to be replaced, which increases the maintenance cost of the detection mechanism.

[0005] To achieve the above object, the present invention provides the following technical solutions: A vehicle wiper output shaft detection mechanism comprises a positioning plate, a first positioning disc is fixedly mounted on one side of the top of the positioning plate, a second positioning disc is fixedly mounted on the top of the first positioning disc, a fixed bushing is fixedly mounted inside the positioning plate, a motion detection sleeve that passes through the second positioning disc is slidably connected inside the fixed bushing, a sleeve located outside the motion detection sleeve is fixedly mounted in the middle of the top of the second positioning disc, a pressing groove is provided on one side of the sleeve, a connecting component is slidably connected inside the pressing groove, a handle component is fixedly mounted on one side of the connecting component, and a detection sleeve is fixedly mounted on the bottom end of the fixed bushing.

[0006] Preferably, a spring located on the outside of the motion detection sleeve is fixedly installed at the bottom end of the connecting component, and the bottom end of the spring is fixedly connected to the side opposite to the sleeve. The bottom end of the connecting component is in contact with the side opposite to the motion detection sleeve. When the connecting component presses the motion detection sleeve to slide, the connecting component squeezes the spring from the top. The spring is elastic, and the spring undergoes elastic deformation to buffer the squeezing force.

[0007] Preferably, the connecting assembly includes a baffle and a pressing rod, one end of the baffle is fixedly connected to one end of the pressing rod, and the other end of the baffle is fixedly installed with a connecting column, the middle part of the connecting column is connected to the handle assembly, and the connecting column drives the pressing rod to move synchronously through the baffle, and the pressing rod squeezes the motion detection sleeve from the top, so that the motion detection sleeve slides relative to the sleeve.

[0008] Preferably, the handle assembly includes a first handle rod and a second handle rod, one end of the first handle rod is fixedly connected to one end of the second handle rod, a connecting hole is opened in the middle of the first handle rod, the first handle rod is connected to the connecting column through the connecting hole, and when the user presses the second handle rod with his hand, the second handle rod drives the connecting column through the first handle rod.

[0009] Preferably, a nut is threadedly connected to the top of the sleeve, and when the user rotates the nut, the threads on the inner wall of the nut match the threads on the surface of the sleeve, the nut rotates and rises relative to the sleeve, and the nut adjusts the sliding distance of the motion detection sleeve from the top of the sleeve.

[0010] Preferably, four rectangularly arranged positioning holes are provided at the top of the first positioning disc and the top of the second positioning disc, and the user screws screws through the positioning holes to complete the fixing and assembly of the first positioning disc and the second positioning disc.

[0011] Preferably, a fixing hole is provided on one side of the top of the positioning plate away from the first positioning disc, and two limiting holes are provided on the positioning plate respectively located on both sides of the fixing hole, and the user uses screws to pass through the fixing holes to fix the positioning plate at the place of use.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. It adopts a sleeve structure, which is composed of 4 circular parts. The single-side clearance of the circumference is 1.5mm. The position tolerance requirements can be detected in any direction. The design is ingenious and the structure is reasonable. 2. The parts are circular parts, so only the outer circle grinding is needed to grind the gap, and the flat grinding is needed to grind the sliding surface to ensure the brightness and sliding flexibility. No benchwork grinding is needed during assembly. The whole processing technology is very simple and the cost is low. 3. A closed ring is formed between the positioning discs, and lubricating oil can be added without flowing out, ensuring that there is no rust between the parts and smooth sliding; 4. The spring is changed to a compression spring and installed in a sleeve, which is beautiful and practical, has a long service life, and can be made by yourself, thus reducing the processing cycle and the processing cost; 5. The detection mechanism of the machine is reasonably designed, ingeniously conceived, highly applicable, and low cost. It has been used in the production site and has great reference value in the promotion of output shaft detection of other front and rear scraper products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A perspective view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 is a three-dimensional diagram of the connection assembly of the present invention; Figure 4 It is a three-dimensional view of the handle assembly of the present invention.

[0014] In the figure: 1. detection sleeve; 2. motion detection sleeve; 3. positioning plate; 4. first positioning disc; 5. second positioning disc; 6. sleeve; 7. spring; 8. connecting assembly; 81. pressing rod; 82. baffle; 83. connecting column; 9. handle assembly; 91. first handle rod; 92. second handle; 93. connecting hole; 10. nut; 11. fixing bushing; 12. fixing hole; 13. limiting hole; 14. positioning hole; 15. pressing groove. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] See also Figure 1-4 The present invention provides an automobile wiper output shaft detection mechanism, including a positioning plate 3, a first positioning disc 4 is fixedly installed on one side of the top of the positioning plate 3, a second positioning disc 5 is fixedly installed on the top of the first positioning disc 4, a fixed bushing 11 is fixedly installed inside the positioning plate 3, a motion detection sleeve 2 that penetrates the second positioning disc 5 is slidably connected inside the fixed bushing 11, a sleeve 6 located outside the motion detection sleeve 2 is fixedly installed in the middle of the top of the second positioning disc 5, a pressing groove 15 is opened on one side of the sleeve 6, a connecting component 8 is slidably connected inside the pressing groove 15, a handle component 9 is fixedly installed on one side of the connecting component 8, and a detection sleeve 1 is fixedly installed at the bottom end of the fixed bushing 11.

[0017] The bottom end of the connecting component 8 is fixedly installed with a spring 7 located on the outside of the motion detection sleeve 2. The bottom end of the spring 7 is fixedly connected to the side opposite to the sleeve 6. The bottom end of the connecting component 8 is in contact with the side opposite to the motion detection sleeve 2. When the connecting component 8 presses the motion detection sleeve 2 to slide, the connecting component 8 squeezes the spring 7 from the top. The spring 7 is elastic, and the spring 7 undergoes elastic deformation to buffer the squeezing force.

[0018] The connecting assembly 8 includes a baffle 82 and a pressing rod 81. One end of the baffle 82 is fixedly connected to one end of the pressing rod 81. The other end of the baffle 82 is fixedly installed with a connecting column 83. The middle part of the connecting column 83 is connected to the handle assembly 9. The connecting column 93 drives the pressing rod 81 to move synchronously through the baffle 82. The pressing rod 81 squeezes the motion detection sleeve 2 from the top, causing the motion detection sleeve 2 to slide relative to the sleeve 6.

[0019] The handle assembly 9 includes a first handle rod 91 and a second handle rod 92. One end of the first handle rod 91 is fixedly connected to one end of the second handle rod 92. A connecting hole 93 is opened in the middle of the first handle rod 91. The first handle rod 91 is connected to the connecting column 83 through the connecting hole 93. When the user presses the second handle rod 92 with his hand, the second handle rod 91 drives the connecting column 83 through the first handle rod 91.

[0020] The top end of the sleeve 6 is threadedly connected with a nut 10. When the user rotates the nut 10, the threads on the inner wall of the nut 10 match the threads on the surface of the sleeve 6. The nut 10 rotates and rises relative to the sleeve 6. The nut 10 adjusts the sliding distance of the motion detection sleeve 2 from the top of the sleeve 6.

[0021] Four rectangularly arranged positioning holes 14 are provided at the top of the first positioning disc 4 and the top of the second positioning disc 5 . The user screws screws through the positioning holes 14 to complete the fixing and assembly of the first positioning disc 4 and the second positioning disc 5 .

[0022] A fixing hole 12 is provided on the top of the positioning plate 3 away from the first positioning disc 4 . The positioning plate 3 is provided with two limiting holes 13 located on both sides of the fixing hole 12 . The user uses screws to pass through the fixing holes 12 to fix the positioning plate 3 at the place of use.

[0023] When the embodiment of the present application is in use: the single-sided clearance of the detection sleeve 1 is 0.005mm, ensuring vertical sliding up and down, the single-sided clearance of the fixed bushing 11 is 1.5mm, ensuring the position accuracy of 3mm, the sliding clearance of the second positioning disc 5 is 0.02mm, and the installation of the second positioning disc 5 ensures smooth circular sliding, the verticality of the first positioning disc 4 is 0.02mm, the first positioning disc 4 is filled with oil, and the oil storage function of the first positioning disc 4 prevents rust, the verticality of the internal thread of the sleeve 6 is 0.05, ensuring that the spring 7 has a high verticality when moving up and down, and the specification of the spring 7 is 1.2x15.8x200, ensuring the return of the motion detection sleeve 2, the handle assembly 9 provides a downward pressing action, and the nut 10 plays a limiting role. The user presses the second handle rod 92 with his hand. The second handle rod 91 drives the connecting column 83 through the first handle rod 91. The connecting column 93 drives the pressing rod 81 to move synchronously through the baffle 82. The pressing rod 81 squeezes the motion detection sleeve 2 from the top, so that the motion detection sleeve 2 slides relative to the sleeve 6. The handle assembly 9 presses down and moves in a circle to insert the sleeve 6 into the output shaft. When it cannot be pressed, observe whether the notch and the stop end of the detection sleeve 1 are within the range. If they are within the range, the part is judged to be qualified, otherwise it is unqualified. After the detection is completed, it returns to its original position under the action of the spring 7, the product is removed, and the measurement is completed.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle wiper output shaft detection mechanism, comprising a positioning plate (3), characterized in that: A first positioning disc (4) is fixedly mounted on one side of the top of the positioning plate (3), a second positioning disc (5) is fixedly mounted on the top of the first positioning disc (4), a fixed bushing (11) is fixedly mounted inside the positioning plate (3), a motion detection sleeve (2) penetrating the second positioning disc (5) is slidably connected inside the fixed bushing (11), a sleeve (6) located outside the motion detection sleeve (2) is fixedly mounted in the middle of the top of the second positioning disc (5), a pressing groove (15) is provided on one side of the sleeve (6), a connecting component (8) is slidably connected inside the pressing groove (15), a handle component (9) is fixedly mounted on one side of the connecting component (8), and a detection sleeve (1) is fixedly mounted at the bottom end of the fixed bushing (11).

2. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: A spring (7) located outside the motion detection sleeve (2) is fixedly mounted on the bottom end of the connection component (8); the bottom end of the spring (7) is fixedly connected to the side directly opposite the sleeve (6); and the bottom end of the connection component (8) is in contact with and connected to the side directly opposite the motion detection sleeve (2).

3. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: The connecting assembly (8) comprises a baffle (82) and a pressing rod (81), one end of the baffle (82) being fixedly connected to one end of the pressing rod (81), and the other end of the baffle (82) being fixedly mounted with a connecting column (83), the middle portion of the connecting column (83) being connected to the handle assembly (9).

4. The automobile wiper output shaft detection mechanism according to claim 3, characterized in that: The handle assembly (9) comprises a first handle rod (91) and a second handle rod (92); one end of the first handle rod (91) is fixedly connected to one end of the second handle rod (92); a connecting hole (93) is provided in the middle of the first handle rod (91); and the first handle rod (91) is connected to the connecting column (83) via the connecting hole (93).

5. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: A nut (10) is threadedly connected to the top end of the sleeve (6).

6. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: The top end of the first positioning disc (4) and the top end of the second positioning disc (5) are both provided with four positioning holes (14) arranged in a rectangular shape.

7. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: A fixing hole (12) is provided on a side of the top end of the positioning plate (3) away from the first positioning disc (4), and two limiting holes (13) are provided on the positioning plate (3) and are respectively located on two sides of the fixing hole (12).

8. The detection method of the automobile wiper output shaft detection mechanism according to claim 1, characterized in that: When in use, the single-sided clearance of the detection sleeve (1) is 0.005mm, ensuring vertical sliding up and down, the single-sided clearance of the fixed bushing (11) is 1.5mm, ensuring the position accuracy of 3mm, the sliding clearance of the second positioning disc (5) is 0.02mm, and the installation of the second positioning disc (5) ensures smooth circular sliding, the verticality of the first positioning disc (4) is 0.02mm, and the first positioning disc (4) is filled with oil. The oil storage function of the first positioning disc (4) prevents rust, the verticality of the internal thread of the sleeve (6) is 0.05, ensuring that the spring (7) has high verticality when moving up and down, the specification of the spring (7) is 1.2x15.8x200, ensuring that the movement detection sleeve (2) returns to its original position, and the handle assembly (9) provides a downward pressure effect The nut (10) plays a limiting role. The user presses the second handle rod (92) with his hand. The second handle rod (91) drives the connecting column (83) through the first handle rod (91). The connecting column (93) drives the pressing rod (81) to move synchronously through the baffle (82). The pressing rod (81) squeezes the motion detection sleeve (2) from the top, so that the motion detection sleeve (2) slides relative to the sleeve (6). The handle assembly (9) presses down and moves in a circle to insert the sleeve (6) into the output shaft. When it cannot be pressed, observe whether the notch and the stop end of the detection sleeve (1) are within the range. If they are within the range, the part is judged to be qualified, otherwise it is unqualified. After the detection is completed, it returns to its original position under the action of the spring (7), and the product is removed, and the measurement is completed.

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