Detection mechanism for output shaft of automobile windscreen wiper

Abstract

The utility model discloses an automobile windscreen wiper output shaft detection mechanism which comprises a positioning plate, a first positioning disc is fixedly installed on one side of the top end of the positioning plate, a second positioning disc is fixedly installed on the top end of the first positioning disc, and a fixing lining is fixedly installed in the positioning plate. According to the automobile windscreen wiper output shaft detection mechanism of the utility model, the parts are circular parts, only the cylindrical grinding is needed to match the clearance, the flat grinding is needed to match the sliding surface 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 production efficiency is high, and the cost is low. 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 utility model relates to the technical field of automobile wiper, concretely is a kind of automobile wiper output shaft detection mechanism. BACKGROUND

[0002] ‌The main function of automobile wiper is to remove rain and snow and dust on windshield, to ensure driving safety. Wiper is one of the main safety devices of automobile, which can remove raindrops and snowflakes on the window in snowy or rainy days, to ensure the clear vision of driver. The motor of wiper drives output shaft through worm gear on armature shaft, and drives output gear through idler and idler shaft, finally the output arm connected with wiper connecting rod is operated by output shaft. When the motor rotates, the output arm and connecting rod are driven to move in front and back direction, so as to realize the cleaning function of wiper. The main function of output shaft on automobile wiper is to drive wiper connecting rod to move in front and back direction. The output shaft of automobile wiper needs to be detected by detection mechanism before use.

[0003] However, the traditional detection mechanism has the following shortcomings:

[0004] (1) The traditional detection mechanism adopts 7 square slide block parts to form X, Y direction gap 1.5mm, which is limited to X, Y direction movement, and other directions cannot move. The position tolerance is within 4mm of cylinder, and the range is qualified. However, the traditional detection mechanism has design defects;

[0005] (2) The parts are mostly square, which needs multiple flat grinding, tool grinding and gap fine grinding during processing. The fitter needs to grind each matching surface to ensure smooth sliding during assembly, which is complex in processing technology and high in cost;

[0006] (3) The exposed matching surface of each slide block of traditional detection mechanism is easy to rust, which cannot be used when used, and the site needs to be shut down. The fitter needs to reassemble and grind at the use site, which seriously affects the normal production;

[0007] (4) The spring on the traditional detection mechanism is purchased, the hook part is not easy to bend and process, the spring is exposed outside, easy to rust, and easy to be damaged after a long time of use, which needs to be replaced, increasing the maintenance cost of detection mechanism. SUMMARY

[0008] The utility model discloses a purpose lies in providing a kind of automobile wiper output shaft detection mechanism to solve the traditional detection mechanism in the background art proposed adopts 7 square slide block parts combination to form X, Y direction gap 1.5mm, only limit X, Y direction movement, other direction cannot move, mark position degree tolerance is in cylinder 4mm, range is all qualified, but traditional detection mechanism structure exists design defect;Part is square, processing needs multiple flat grinding, tool grinding thick, fine grinding gap, fitter assembly needs to grind each mating surface to ensure smooth sliding, processing technology is complex, cost is high;Traditional detection mechanism each slider mating surface is exposed to rust, when using, it cannot slide, cannot be used, on-site shutdown, need fitter to use on-site to reassemble and grind, repair, seriously affect normal production;Traditional detection mechanism upper spring is purchased tension spring, hook part is not easy to bend type processing, spring is exposed to rust, use time is long, easy to pull bad, need to be replaced, increase the maintenance cost of detection mechanism.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] An automobile wiper output shaft detection mechanism, including locating plate, the side fixed mounting of first locating disc is located at the top of locating plate, the top fixed mounting of second locating disc is located at the top of first locating disc, the inside fixed mounting of fixed bush is located at the inside of locating plate, the inside sliding connection of fixed bush is located at the inside of the motion detection sleeve that penetrates second locating disc, the middle fixed mounting of sleeve is located at the top of second locating disc and is located at the outside of motion detection sleeve, the side of sleeve is equipped with press groove, the inside sliding connection of press groove is equipped with connecting assembly, the side fixed mounting of handle assembly is equipped with connecting assembly, the bottom fixed mounting of fixed bush is equipped with detection sleeve.

[0011] Preferably, the bottom of the connecting assembly is fixedly installed with a spring located outside the motion detection sleeve, the bottom of the spring is fixedly connected with the side opposite to the sleeve, and the bottom of the connecting assembly is in contact with the side opposite to the motion detection sleeve. During the sliding process of the connecting assembly pressing the motion detection sleeve, the connecting assembly extrudes the spring from the top, the spring has elasticity, and the elastic deformation of the spring buffers the extrusion force.

[0012] Preferably, the connecting assembly includes a baffle and a pressing rod, one end of the baffle is fixedly connected with one end of the pressing rod, the other end of the baffle is fixedly installed with a connecting column, the middle of the connecting column is connected with the handle assembly, the connecting column drives the pressing rod to move synchronously through the baffle, and the pressing rod extrudes the motion detection sleeve from the top, so that the motion detection sleeve slides relative to the sleeve.

[0013] Preferably, the handle assembly comprises a first handle rod and a second handle rod, one end of the first handle rod is fixedly connected with one end of the second handle rod, a connecting hole is formed in the middle of the first handle rod, the first handle rod is connected with the connecting column through the connecting hole, a user presses the second handle rod with hands, and the second handle rod drives the connecting column through the first handle rod.

[0014] Preferably, a screw cap is threadedly connected to the top end of the sleeve, a user rotates the screw cap, the threads on the inner wall of the screw cap and the threads on the surface of the sleeve are matched with each other, the screw cap is rotated up and down relative to the sleeve, and the sliding distance of the motion detection sleeve is adjusted from the top of the sleeve.

[0015] Preferably, four positioning holes in a rectangular array are formed in the top end of the first positioning disc and the top end of the second positioning disc, a user twists a screw through the positioning holes, and the fixing and assembly of the first positioning disc and the second positioning disc are completed.

[0016] Preferably, a fixing hole is formed in the top end of the positioning plate away from the first positioning disc, two limiting holes are formed in the positioning plate and located on the two sides of the fixing hole respectively, and a user fixes the positioning plate at a use position by using a screw through the fixing hole.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1. A sleeve type structure is adopted, four circular parts are combined, the gap on the single side of the circumference is 1.5mm, the position tolerance requirement can be detected in any direction, the design is ingenious, and the structure is reasonable.

[0019] 2. The parts are circular parts, only the outer circle is ground to match the gap, the flat grinding is matched to grind the sliding surface to ensure the brightness and sliding flexibility, the bench worker does not need to grind during the general assembly, the whole machining process is very simple, and the cost is low.

[0020] 3. A closed ring is formed between the positioning discs, lubricating oil can be added without flowing out, rust between the parts is prevented, and smooth sliding is ensured.

[0021] 4. The spring is changed into a compression spring and is installed in the sleeve, is beautiful and practical, has long service life, realizes self-made of the spring, reduces the machining cycle, and reduces the machining cost.

[0022] 5. The machine detection mechanism is reasonable in design, ingenious in conception, high in applicability, low in cost, has been used in the production site, and has great reference value in the extension of the output shaft detection of other front and rear scraping products. DRAWINGS

[0023] Figure 1 It is a perspective view of the utility model;

[0024] Figure 2 It is a sectional view of the utility model.

[0025] Figure 3 A perspective view of the connection assembly of the present invention;

[0026] Figure 4 It is a three-dimensional diagram of the handle assembly of the present invention.

[0027] 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

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] See also Figures 1-4 The utility model provides a vehicle 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 passes through the second positioning disc 5 is slidably connected inside the fixed bushing 11, a sleeve 6 located on the outside of 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 on the bottom end of the fixed bushing 11.

[0030] 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 the sleeve 6. The bottom end of the connecting component 8 is in contact with the side opposite 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.

[0031] 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.

[0032] 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 with one end of the second handle rod 92, a connecting hole 93 is formed in the middle of the first handle rod 91, the first handle rod 91 is connected with the connecting column 83 through the connecting hole 93, the user presses the second handle rod 92 with the hand, and the second handle rod 91 drives the connecting column 83 through the first handle rod 91.

[0033] The top end of the sleeve 6 is threadedly connected with a nut 10, the user rotates the nut 10, the threads on the inner wall of the nut 10 and the threads on the surface of the sleeve 6 are matched with each other, the nut 10 is rotated up and down relative to the sleeve 6, and the nut 10 adjusts the sliding distance of the motion detection sleeve 2 from the top of the sleeve 6.

[0034] 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, the user screws the screw through the positioning hole 14, and the fixing and assembly of the first positioning disc 4 and the second positioning disc 5 are completed.

[0035] The top end of the positioning plate 3 away from the first positioning disc 4 is provided with a fixing hole 12, the positioning plate 3 is provided with two limiting holes 13 located on the two sides of the fixing hole 12, and the user fixes the positioning plate 3 at the use position by using the screw through the fixing hole 12.

[0036] In use: the single-face gap of the detection sleeve 1 is 0.005 mm, the vertical sliding of the detection sleeve 1 is ensured, the single-face gap of the fixed bushing 11 is 1.5 mm, the position degree of 3 mm is ensured, the sliding gap of the second positioning disc 5 is 0.02 mm, the installation of the second positioning disc 5 ensures the smooth circumferential sliding, the perpendicularity of the first positioning disc 4 is 0.02 mm, the first positioning disc 4 stores oil, the oil storage function of the first positioning disc 4 prevents rust, the perpendicularity of the internal threads of the sleeve 6 is 0.05, the perpendicularity is high when the spring 7 moves up and down, the specification of the spring 7 is 1.2x15.8x200, the return of the motion detection sleeve 2 is ensured, the handle assembly 9 provides a downward pressing action, the nut 10 plays a limiting role, the user presses the second handle rod 92 with the 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 extrudes the motion detection sleeve 2 from the top, the motion detection sleeve 2 slides relative to the sleeve 6, the handle assembly 9 is pressed downward and moves circumferentially to sleeve the sleeve 6 into the output shaft, when the sleeve 6 cannot be pressed, whether the gap of the detection sleeve 1 is within the range is observed, if the gap is within the range, it is judged that the part is qualified, otherwise, it is unqualified, after the detection is completed, the spring 7 returns, the product is taken out, and the measurement is completed.

[0037] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

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) that passes through 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 assembly (8) is slidably connected inside the pressing groove (15), a handle assembly (9) is fixedly mounted on one side of the connecting assembly (8), and a detection sleeve (1) is fixedly mounted on the bottom end of the fixed bushing (11).

2. The automobile wiper output shaft detection mechanism according to claim 1, characterized in that: The bottom end of the connecting component (8) is fixedly mounted with a spring (7) located outside the motion detection sleeve (2), the bottom end of the spring (7) is fixedly connected to the side facing the sleeve (6), and the bottom end of the connecting component (8) is in contact with the side facing 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) is fixedly connected to one end of the pressing rod (81), and the other end of the baffle (82) is fixedly mounted with a connecting column (83), the middle portion of the connecting column (83) is 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) through the connecting hole (93).

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

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

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

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