An apparatus for measuring optical parameters of an automotive lamp

Abstract

An instrument for measuring the optical parameters of automotive lighting fixtures, relating to the field of automotive lighting devices, includes an optical measuring instrument and an automotive lighting fixture. The optical measuring instrument has an anti-deformation clamping component, which includes a base, a threaded rod, a fixed chuck, a sliding block, a force-equalizing pushing component, and an eccentric adjustment component. The base has a sliding groove and is fixedly connected to the optical measuring instrument. The fixed chuck is fixedly connected to the base, and its clamping surface abuts against the automotive lighting fixture. The threaded rod is rotatably connected to the base, and the sliding block is slidably connected to the base and threadedly connected to the threaded rod. The force-equalizing pushing component is fixedly connected to the sliding block and connected to the eccentric adjustment component. The eccentric adjustment component is connected to the automotive lighting fixture and slidably connected to the sliding block. The beneficial effect is that it avoids the reduction in measurement accuracy caused by deformation of the reflector bowl of the automotive lighting fixture due to uneven force during clamping, thus improving measurement precision.

Description

Technical Field

[0001] This utility model relates to the field of profile processing equipment technology, and in particular to a measuring instrument for the optical parameters of automotive lamps. Background Technology

[0002] As is generally known, vehicle lights refer to the lights on a vehicle. They are tools for illuminating the road when a vehicle is driving at night, and also tools for issuing various vehicle driving signals. They are generally divided into headlights, taillights, turn signals, etc. As an important safety indicator device, automotive lights need to be tested for optical parameters before leaving the factory.

[0003] Chinese patent CN222774250U describes an automotive headlight testing and fixing device, which includes a worktable and a support frame. The support frame has a fixed plate with an adjustment groove, and the adjustment groove contains a first threaded rod and two movable plates connected by the first threaded rod. However, in actual use, the following problems still exist: When performing optical parameter testing on automotive lights, clamping is achieved by symmetrically moving the clamping arms. However, uneven clamping force during the clamping process causes deformation of the reflector bowl of the automotive light, resulting in a decrease in measurement accuracy. At the same time, the clamping is performed through a slide rail mechanism, and there will inevitably be a gap between the chuck and the fixing part. During clamping, slight eccentricity of the chuck causes coaxiality deviation, resulting in positioning deviation and affecting measurement accuracy.

[0004] Therefore, an instrument for measuring the optical parameters of automotive lighting is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a measuring instrument for the optical parameters of automotive lamps.

[0006] To achieve the aforementioned objective, this utility model adopts the following technical solution: An instrument for measuring the optical parameters of automotive lamps includes an optical measuring instrument and an automotive lamp. The optical measuring instrument has an anti-deformation clamping component. The automotive lamp is connected to the optical measuring instrument via the anti-deformation clamping component. The anti-deformation clamping component includes a base, a threaded rod, a fixed clamp, a sliding block, a force-equalizing pushing component, and an eccentric adjustment component. The base has a sliding groove. The lower surface of the base is fixedly connected to the optical measuring instrument. The bottom end of the fixed clamp is fixedly connected to the upper surface of the base. The clamping surface of the fixed clamp abuts against the automotive lamp. The clamping surface of the fixed chuck is an arc-shaped surface. The threaded rod is located in the sliding groove and rotatably connected to the base. The sliding block is located in the sliding groove and slidably connected to the base. The sliding block is threadedly connected to the threaded rod. The bottom end of the force equalizing push component is fixedly connected to the upper surface of the sliding block. The side of the force equalizing push component near the fixed chuck is connected to the side of the eccentric adjustment component away from the fixed chuck. The side of the eccentric adjustment component near the fixed chuck abuts against the automotive lamp. The bottom end of the eccentric adjustment component is slidably connected to the sliding block.

[0007] The force-equalizing pushing assembly includes a pushing block, a limiting rod, and a pressure pushing member. The bottom end of the pushing block is fixedly connected to the sliding block. The side of the pushing block near the fixed clamp is provided with a limiting hole. One end of the limiting rod is connected to the eccentric adjustment assembly, and the other end of the limiting rod is slidably connected to the pushing block within the limiting hole. The pushing block is provided with a pressure chamber. The fixed end of the pressure pushing member is connected to the side of the pushing block near the fixed clamp, and the pressure pushing member communicates with the pressure chamber. The movable end of the pressure pushing member is connected to the eccentric adjustment assembly.

[0008] Two pressure pushers are provided, and the pressure pushers are symmetrically arranged on the side of the push block near the fixed clamp. Each pressure pusher includes a pressure tube, a piston, and a push rod. The pressure tube is fixedly connected to the push block and communicates with the pressure chamber. The piston is located inside the pressure tube and is slidably connected to the pressure tube. One end of the push rod is fixedly connected to the piston, and the other end of the push rod is connected to the eccentric adjustment assembly.

[0009] The eccentric adjustment assembly includes a driven block, an arc-shaped clamp, an eccentric adjustment component, and a rolling connector. The lower surface of the driven block is slidably connected to the upper surface of the sliding block. The side of the driven block away from the fixed clamp is fixedly connected to the limiting rod. A connecting groove is provided in the driven block. The arc-shaped clamp is located on the side of the driven block near the fixed clamp. The side of the arc-shaped clamp away from the fixed clamp is connected to the push rod through the eccentric adjustment component located in the connecting groove. The arc-shaped clamp abuts against the automotive lamp through the rolling connector.

[0010] The eccentric adjustment component includes a fixed rod, a rotating shaft, and a connecting rod. One end of the fixed rod is fixedly connected to the side of the arc-shaped clamp away from the fixed clamp. The other end of the fixed rod is located in the communicating groove and fixedly connected to the rotating shaft. The bottom of the inner wall of the communicating groove is provided with an arc-shaped limiting groove. The bottom end of the rotating shaft is located in the arc-shaped limiting groove and is slidably connected to the driven block. One end of the connecting rod is rotatably connected to the rotating shaft, and the other end of the connecting rod is hinged to the push rod through a pin.

[0011] The rolling connectors are provided in a plurality of form and are evenly distributed on the arc-shaped clamping plate. Each rolling connector includes a rolling column. The arc-shaped clamping plate is provided with a rolling groove. The rolling column is located in the rolling groove and is rotatably connected to the arc-shaped clamping plate. The rolling column abuts against the automotive lamp.

[0012] An auxiliary spring is provided in the connecting groove. There are two auxiliary springs, and the two sides of the fixed rod are respectively connected to the driven block through the two auxiliary springs.

[0013] Compared with the prior art, the present invention has the following advantages: by using the pressure chamber in conjunction with the piston to push the arc-shaped clamping plate, the measurement accuracy is improved by avoiding the deformation of the reflector bowl of the car lamp caused by uneven force when clamping the car lamp; by using the pressure consistency in the pressure chamber in conjunction with the piston to make the arc-shaped clamping plate rotate slightly around the car lamp, the positioning deviation caused by the coaxiality deviation when the arc-shaped clamping plate clamps the car lamp in an eccentric state is avoided, thus improving the measurement accuracy. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural schematic diagram of the anti-deformation clamping component of this utility model in the clamping state; Figure 3 This is a schematic diagram of the structure of the anti-deformation clamping component of this utility model in the unclamped state; Figure 4 This is a three-dimensional structural diagram of the connection between the uniform force pushing component and the eccentric adjustment component of this utility model; Figure 5 This is a top view of the cross-sectional structure of the connection between the uniform force pushing component and the eccentric adjustment component of this utility model; Figure 6 This utility model Figure 4 A magnified structural diagram of point A is shown below; Figure 7 This utility model Figure 5 A magnified structural diagram of point B is shown below; Figure 8 This utility model Figure 5 A magnified structural diagram of point C is shown.

[0015] 1. Optical measuring instrument; 2. Automotive lamps; 3. Anti-deformation clamping components; 4. Base; 5. Threaded rod; 6. Fixed chuck; 7. Sliding block; 8. Sliding groove; 9. Pushing block; 10. Limiting rod; 11. Pressure chamber; 12. Pressure tube; 13. Piston; 14. Push rod; 15. Follower block; 16. Arc-shaped clamping plate; 17. Connecting groove; 18. Fixed rod; 19. Rotating shaft; 20. Connecting rod; 21. Arc-shaped limiting groove; 22. Rolling column; 23. Rolling groove; 24. Auxiliary spring. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0017] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0018] An instrument for measuring the optical parameters of automotive lamps includes an optical measuring instrument 1 and an automotive lamp 2. The optical measuring instrument 1 has an anti-deformation clamping component 3. The automotive lamp 2 is connected to the optical measuring instrument 1 through the anti-deformation clamping component 3. The anti-deformation clamping component 3 includes a base 4, a threaded rod 5, a fixed clamp 6, a sliding block 7, a force equalizing pushing component, and an eccentric adjustment component. The base 4 has a sliding groove 8. The lower surface of the base 4 is fixedly connected to the optical measuring instrument 1. The bottom end of the fixed clamp 6 is fixedly connected to the upper surface of the base 4. The clamping surface of the fixed clamp 6 is perpendicular to the automotive lamp. The components 2 abut against each other, and the clamping surface of the fixed chuck 6 is an arc-shaped surface. The threaded rod 5 is located in the sliding groove 8 and is rotatably connected to the base 4. The sliding block 7 is located in the sliding groove 8 and is slidably connected to the base 4. The sliding block 7 is threadedly connected to the threaded rod 5. The bottom end of the uniform force pushing component is fixedly connected to the upper surface of the sliding block 7. The side of the uniform force pushing component near the fixed chuck 6 is connected to the side of the eccentric adjustment component away from the fixed chuck 6. The side of the eccentric adjustment component near the fixed chuck 6 abuts against the automotive lamp 2. The bottom end of the eccentric adjustment component is slidably connected to the sliding block 7.

[0019] The force-equalizing push assembly includes a push block 9, a limiting rod 10, and a pressure pusher. The bottom end of the push block 9 is fixedly connected to the sliding block 7. The side of the push block 9 near the fixed clamp 6 is provided with a limiting hole. One end of the limiting rod 10 is connected to the eccentric adjustment assembly, and the other end of the limiting rod 10 is slidably connected to the push block 9 in the limiting hole. The push block 9 is provided with a pressure chamber 11. The fixed end of the pressure pusher is connected to the side of the push block 9 near the fixed clamp 6, and the pressure pusher is connected to the pressure chamber 11. The movable end of the pressure pusher is connected to the eccentric adjustment assembly.

[0020] Two pressure pushers are provided, which are symmetrically arranged on the side of the push block 9 near the fixed clamp 6. Each pressure pusher includes a pressure tube 12, a piston 13 and a push rod 14. The pressure tube 12 is fixedly connected to the push block 9 and is connected to the pressure chamber 11. The piston 13 is located inside the pressure tube 12 and is slidably connected to the pressure tube 12. One end of the push rod 14 is fixedly connected to the piston 13 and the other end of the push rod 14 is connected to the eccentric adjustment assembly.

[0021] The eccentric adjustment assembly includes a driven block 15, an arc-shaped clamping plate 16, an eccentric adjustment component, and a rolling connector. The lower surface of the driven block 15 is slidably connected to the upper surface of the sliding block 7. The side of the driven block 15 away from the fixed clamp 6 is fixedly connected to the limiting rod 10. A connecting groove 17 is provided in the driven block 15. The arc-shaped clamping plate 16 is located on the side of the driven block 15 close to the fixed clamp 6. The side of the arc-shaped clamping plate 16 away from the fixed clamp 6 is connected to the push rod 14 through the eccentric adjustment component located in the connecting groove 17. The arc-shaped clamping plate 16 abuts against the automotive lamp 2 through the rolling connector.

[0022] The eccentric adjustment component includes a fixed rod 18, a rotating shaft 19, and a connecting rod 20. One end of the fixed rod 18 is fixedly connected to the side of the arc-shaped clamp 16 away from the fixed clamp 6. The other end of the fixed rod 18 is located in the connecting groove 17 and is fixedly connected to the rotating shaft 19. The bottom of the inner wall of the connecting groove 17 is provided with an arc-shaped limiting groove 21. The bottom end of the rotating shaft 19 is located in the arc-shaped limiting groove 21 and is slidably connected to the driven block 15. One end of the connecting rod 20 is rotatably connected to the rotating shaft 19, and the other end of the connecting rod 20 is hinged to the push rod 14 through a pin.

[0023] Several rolling connectors are provided and are evenly distributed on the arc-shaped clamping plate 16. The rolling connectors include rolling columns 22. The arc-shaped clamping plate 16 is provided with rolling grooves 23. The rolling columns 22 are located in the rolling grooves 23 and are rotatably connected to the arc-shaped clamping plate 16. The rolling columns 22 abut against the automotive lamp 2.

[0024] An auxiliary spring 24 is provided in the connecting groove 17. There are two auxiliary springs 24, and the two sides of the fixed rod 18 are respectively connected to the driven block 15 through the two auxiliary springs 24.

[0025] The work process is as follows: S1, during use, after placing the car lamp 2 on the fixed clamp 6, rotate the threaded rod 5, causing the sliding block 7 threaded on the threaded rod 5 to slide inward along the sliding groove 8 of the base 4. The sliding block 7 drives the pushing block 9 to slide inward. The sliding block 7, through friction with the driven block 15, drives the driven block 15 and the pushing block 9 to slide inward synchronously. When the car lamp 2 contacts the arc-shaped clamp 16, the driven block 15 is blocked by the arc-shaped clamp 16 and remains stationary, while the pushing block 9 continues to slide forward. The piston 13 in the pressure tube 12 compresses the air in the pressure chamber 11, thus compressing the air. The air-driven piston 13 generates thrust, which is transmitted to the arc-shaped clamping plate 16 via the push rod 14, connecting rod 20, rotating shaft 19, and fixed rod 18. Due to the uniformity of pressure in the pressure chamber 11, the thrust generated by the piston 13 is equal. The two fixed rods 18 are symmetrically arranged facing the axis of the arc-shaped clamping plate 16. Therefore, the arc-shaped clamping plate 16 evenly transmits the force to the automotive lamp 2 to clamp it, thus avoiding the reduction in measurement accuracy caused by the deformation of the reflector bowl of the automotive lamp 2 due to uneven force when clamping it, thereby improving the measurement accuracy.

[0026] S2, during the clamping process, when the arc-shaped clamping plate 16 contacts the car lamp 2 and becomes eccentric, the pressure fed back by the arc-shaped clamping plate 16 to the two fixed rods 18 is not equal. Due to the consistency of the pressure in the pressure chamber 11, the sliding distance of the two pistons 13 in the pressure tube 12 changes. Through the cooperation of the push rod 14, connecting rod 20, rotating shaft 19 and fixed rod 18, the arc-shaped clamping plate 16 rotates slightly around the car lamp 2, so that the arc-shaped clamping plate 16 is aligned with the axis of the car lamp 2 and clamps the car lamp 2. This avoids the coaxiality deviation caused by the arc-shaped clamping plate 16 clamping the car lamp 2 in an eccentric state, which leads to positioning deviation and improves measurement accuracy.

[0027] The addition of the arc-shaped limiting groove 21 avoids insufficient clamping force caused by excessive rotation angle of the arc-shaped clamping plate 16 due to manual operation errors. An auxiliary spring 24 is added to the fixing rod 18 to maintain the stability of the fixing rod 18. To reduce the horizontal friction between the arc-shaped clamping plate 16 and the automotive lamp 2 and facilitate the rotation of the arc-shaped clamping plate 16, a rolling column 22 is set on the arc-shaped clamping plate 16. While ensuring radial friction to clamp the automotive lamp 2, the arc-shaped clamping plate 16 is made easier to rotate and adjust in coordination with the automotive lamp 2. In the specific working principle, the pressure chamber 11 is exemplified by air. Liquid can also be used to generate pressure instead of air. Of course, the optical measuring instrument 1 will use corresponding sensors to ensure the positioning accuracy when positioning the automotive lamp 2. When using the clamp manually, corresponding sensors are required. These are all existing technologies and are not detailed in the specification.

[0028] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A measuring instrument of optical parameters of a motor vehicle lamp, comprising an optical measuring instrument (1) and a motor vehicle lamp (2), characterized in that: The optical measuring instrument (1) is equipped with an anti-deformation clamping component (3). The automotive lamp (2) is connected to the optical measuring instrument (1) through the anti-deformation clamping component (3). The anti-deformation clamping component (3) includes a base (4), a threaded rod (5), a fixed chuck (6), a sliding block (7), a force equalization pushing component, and an eccentric adjustment component. The base (4) is equipped with a sliding groove (8). The lower surface of the base (4) is fixedly connected to the optical measuring instrument (1). The bottom end of the fixed chuck (6) is fixedly connected to the upper surface of the base (4). The clamping surface of the fixed chuck (6) abuts against the automotive lamp (2), and the clamping surface of the fixed chuck (6) is... The surface is arc-shaped. The threaded rod (5) is located in the sliding groove (8) and is rotatably connected to the base (4). The sliding block (7) is located in the sliding groove (8) and is slidably connected to the base (4). The sliding block (7) is threadedly connected to the threaded rod (5). The bottom end of the force equalizing push component is fixedly connected to the upper surface of the sliding block (7). The side of the force equalizing push component near the fixed chuck (6) is connected to the side of the eccentric adjustment component away from the fixed chuck (6). The side of the eccentric adjustment component near the fixed chuck (6) abuts against the car lamp (2). The bottom end of the eccentric adjustment component is slidably connected to the sliding block (7).

2. The apparatus for measuring optical parameters of a vehicle lamp according to claim 1, wherein: The force-equalizing push assembly includes a push block (9), a limiting rod (10), and a pressure pusher. The bottom end of the push block (9) is fixedly connected to the sliding block (7). The push block (9) has a limiting hole on its side near the fixed clamp (6). One end of the limiting rod (10) is connected to the eccentric adjustment assembly. The other end of the limiting rod (10) is slidably connected to the push block (9) in the limiting hole. The push block (9) has a pressure chamber (11). The fixed end of the pressure pusher is connected to the side of the push block (9) near the fixed clamp (6), and the pressure pusher is connected to the pressure chamber (11). The movable end of the pressure pusher is connected to the eccentric adjustment assembly.

3. The apparatus for measuring optical parameters of a vehicle lamp according to claim 2, wherein: Two pressure pushers are provided, and the pressure pushers are symmetrically arranged on the side of the push block (9) near the fixed clamp (6). The pressure pusher includes a pressure tube (12), a piston (13) and a push rod (14). The pressure tube (12) is fixedly connected to the push block (9) and is connected to the pressure chamber (11). The piston (13) is located inside the pressure tube (12) and is slidably connected to the pressure tube (12). One end of the push rod (14) is fixedly connected to the piston (13), and the other end of the push rod (14) is connected to the eccentric adjustment assembly.

4. The apparatus for measuring optical parameters of a vehicle lamp according to claim 3, wherein: The eccentric adjustment assembly includes a driven block (15), an arc-shaped clamp (16), an eccentric adjustment member, and a rolling connector. The lower surface of the driven block (15) is slidably connected to the upper surface of the sliding block (7). The side of the driven block (15) away from the fixed clamp (6) is fixedly connected to the limiting rod (10). A connecting groove (17) is provided in the driven block (15). The arc-shaped clamp (16) is located on the side of the driven block (15) close to the fixed clamp (6). The side of the arc-shaped clamp (16) away from the fixed clamp (6) is connected to the push rod (14) through the eccentric adjustment member located in the connecting groove (17). The arc-shaped clamp (16) is connected to the automotive lamp (2) through the rolling connector.

5. The apparatus for measuring optical parameters of a vehicle lamp according to claim 4, wherein: The eccentric adjustment component includes a fixed rod (18), a rotating shaft (19), and a connecting rod (20). One end of the fixed rod (18) is fixedly connected to the side of the arc-shaped clamp (16) away from the fixed clamp (6). The other end of the fixed rod (18) is located in the connecting groove (17) and fixedly connected to the rotating shaft (19). The bottom end of the inner wall of the connecting groove (17) is provided with an arc-shaped limiting groove (21). The bottom end of the rotating shaft (19) is located in the arc-shaped limiting groove (21) and slidably connected to the driven block (15). One end of the connecting rod (20) is rotatably connected to the rotating shaft (19). The other end of the connecting rod (20) is hinged to the push rod (14) through a pin.

6. The apparatus for measuring optical parameters of a vehicle lamp according to claim 4, wherein: The rolling connectors are provided in a plurality of form and are evenly distributed on the arc-shaped clamp (16). The rolling connectors include rolling columns (22). The arc-shaped clamp (16) is provided with rolling grooves (23). The rolling columns (22) are located in the rolling grooves (23) and are rotatably connected to the arc-shaped clamp (16). The rolling columns (22) abut against the automotive lamp (2).

7. The apparatus for measuring optical parameters of a vehicle lamp according to claim 5, wherein: An auxiliary spring (24) is provided in the connecting groove (17). There are two auxiliary springs (24), and the two sides of the fixed rod (18) are respectively connected to the driven block (15) through the two auxiliary springs (24).

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