A testing tool for a vehicle lamp housing
By incorporating a sliding base and movable plate into the headlight housing inspection fixture, the problems of poor fixture versatility and low inspection efficiency caused by differences in vehicle models are solved, thereby reducing inspection costs and improving efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN POLARY MOLD TECH CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-29
AI Technical Summary
Existing vehicle headlight housing inspection tools are custom-developed for different vehicle models, resulting in poor tool versatility, high inspection costs, and low inspection efficiency.
A tooling for inspecting vehicle lamp housings was designed. By setting a sliding base and a flip-up movable plate on the base, combined with a molding block and a lifting device, it is possible to flexibly position and remove different vehicle lamp housings.
It improves the versatility of inspection tools, reduces inspection costs, and enhances inspection efficiency through flexible part-picking methods.
Smart Images

Figure CN224302927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection tool technology. More specifically, this utility model relates to an inspection tool for vehicle lamp housings. Background Technology
[0002] Automotive headlight housings consist of an outer shell and an inner shell, typically injection-molded parts. After injection molding, their external dimensions and aperture sizes need to be inspected using a fixture to ensure dimensional accuracy meets assembly requirements. In existing technology, because headlight shapes vary across different car models, different fixtures are usually custom-developed for each housing. Once production of a particular model is complete, all the fixtures used become unusable, resulting in poor fixture versatility and high inspection costs. Furthermore, after the headlight housing is positioned in the custom-designed slot, the corresponding positioning block usually needs to be flipped to remove it, impacting inspection efficiency. Utility Model Content
[0003] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.
[0004] To achieve these objectives and other advantages according to this utility model, a gauge for a vehicle lamp housing is provided, comprising: a base, the top surface of which is provided with a plurality of sliding bases along its circumference; the sliding bases are slidable along the longitudinal or transverse direction of the base; the sliding bases are divided into three parts, one part of which is fixedly provided with a fixed plate, another part of which is rotatably connected with a movable plate, and the remaining part of which is fixedly provided with clamps; the fixed plate and the movable plate are detachably connected to a profile block on the side facing the center of the top surface of the base, and each profile block is sequentially joined to form a positioning groove that matches the shape of the vehicle lamp housing, and the bottom of some of the profile blocks extends into a platform towards the center of the positioning groove to support the vehicle lamp housing; the top surface of the base is provided with a lifting device corresponding to the positioning groove to push the vehicle lamp housing upward from the bottom of the positioning groove.
[0005] Preferably, the sliding base includes a base plate, a slider disposed at the bottom of the base plate, and a long screw threadedly connected to the slider; the top surface of the base is provided with a sliding groove corresponding to the slider of each sliding base, and the side wall of the base is provided with a threaded hole corresponding to each long screw.
[0006] Preferably, the movable plate includes a limiting plate and a flip plate detachably connected to the molding block. The limiting plate is vertically disposed at one end of the sliding base. The flip plate is disposed close to the limiting plate and is rotatably connected to the sliding base via a rotating shaft. The limiting plate and the flip plate are symmetrically provided with screw holes, and the two are detachably connected by bolts.
[0007] Preferably, the lifting device includes a fixed base, a movable base, and a transmission device; the fixed base is fixed on the base, and the movable base is connected to the fixed base through the transmission device and moves up and down relative to the fixed base under the drive of the transmission device.
[0008] Preferably, the transmission device includes a rack and a plurality of round rods disposed in the fixed seat; both ends of the rack extend out of the fixed seat; the bottom of the round rods is fixedly fitted with gears that mesh with the rack; the upper section of the round rods is provided with threads and is threadedly connected to a ring block, the ring block is fixedly connected to the bottom of the movable seat, and the bottom of the movable seat is provided with blind holes corresponding to each of the round rods.
[0009] Preferably, the top of the movable seat is provided with a plurality of threaded blind holes spaced apart, and a screw is provided in some or all of the threaded blind holes.
[0010] Preferably, a rubber pad is attached to the top of the screw.
[0011] This utility model has at least the following beneficial effects:
[0012] The inspection fixture for vehicle lamp housings provided by this utility model allows for flexible adjustment of the longitudinal or lateral positions of each profiling block on the base via sliding bases, forming positioning grooves adaptable to vehicle lamp housings of different sizes and shapes. This provides strong versatility, avoids fixture waste, and reduces lamp housing inspection costs. Furthermore, when removing parts after inspection, the fixture can be removed by adjusting the movable plate or by using a lifting device, depending on whether the lamp housing shape is regular, effectively improving inspection efficiency.
[0013] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description
[0014] Figure 1 This is a side view of the inspection tool for vehicle lamp housings described in this utility model.
[0015] Figure 2 This is a side view of the sliding base of the present invention.
[0016] Figure 3 This is a side view of the lifting device described in this utility model;
[0017] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;
[0018] Figure 5 This is a top view of the base described in this utility model; Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.
[0020] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] like Figures 1 to 5 As shown, this utility model provides a gauge for a vehicle lamp housing, comprising: a base 1, on which a plurality of sliding bases 7 are arranged circumferentially along its top surface; the sliding bases 7 can slide along the longitudinal or transverse direction of the base; the sliding bases 7 are divided into three parts, one part of which is fixedly provided with a fixing plate 3, another part of which is rotatably connected with a movable plate 2, and the remaining part of which is fixedly provided with a clamping clamp 4; both the fixing plate 3 and the movable plate 2 are detachably connected to a molding block 6 on the side facing the center of the top surface of the base 1, and each molding block 6 is sequentially joined to form a positioning groove that matches the shape of the vehicle lamp housing, and the bottom of some molding blocks 6 extends into a platform towards the center of the positioning groove to support the vehicle lamp housing; the top surface of the base 1 is provided with a lifting device 6 corresponding to the positioning groove, for lifting the vehicle lamp housing upward from the bottom of the positioning groove.
[0022] In this technical solution, considering that the planar dimensions of the positioning grooves corresponding to different shapes and sizes of vehicle lamp housings are also different, the longitudinal or lateral positions of the contour blocks 6 on the base 1 can be flexibly adjusted by the sliding bases 7 to form positioning grooves of different sizes. Furthermore, due to the irregularity of the lamp housing shape, the shapes of the contour blocks 6 can be the same or different, and the contour blocks for different vehicle lamp housings are customized according to their specific shapes. To support the bottom of the lamp housing and ensure that it is stably placed in the positioning groove, a platform is set at the bottom of some of the contour blocks 6 at a position corresponding to the flat bottom of the lamp housing. Therefore, the positioning grooves formed by the sequentially joined contour blocks 6 not only match the shape of the lamp housing on all sides, but also form a partially hollowed-out structure at the bottom to allow the irregular structure at the bottom of the lamp housing to protrude; at the same time, the fixed plate 3 and the movable plate 2 ensure that the contour blocks 6 are at a certain height from the top surface of the base 1, and the gaps between the three also allow the irregular structure of the lamp housing to protrude horizontally. The contour blocks 6 surround and limit the lamp housing in the horizontal plane, while the platform at the top of the contour block 6 cooperates with the clamp 4 to limit the lamp housing in the vertical plane. The clamp 4 can be a conventional clamp structure used in inspection fixtures, which presses against the lamp housing from above. Preferably, the base 1 is also provided with a mounting seat 8 for placing inspection tools such as plug gauges and inspection pins. After the lamp housing is positioned on the vehicle lamp housing inspection fixture, the relevant dimensions can be inspected using inspection tools. In use, each contour block 6 is first installed on the corresponding fixed plate 3 or the movable plate 2. The movable plate 2 is provided here because some lamp housings have protruding structures in the longitudinal or transverse direction. When the lamp housing is placed in the positioning groove, its protruding structure extends from below the contour block, making it impossible to place or remove the lamp housing in the vertical direction. Therefore, the movable plate 2 needs to be set at the protruding structure. When placing or removing the lamp housing, the movable plate 2 is flipped downwards so that the contour block no longer causes interference in the vertical direction. For lamp housings without an external extension structure, the lifting device 6 below the positioning groove lifts the lamp housing upwards so that the operator can quickly remove the part.
[0023] In another technical solution, the sliding base 7 includes a base plate 71, a slider 72 disposed at the bottom of the base plate 71, and a long screw 73 threadedly connected to the slider 72. The top surface of the base 1 has a groove 11 corresponding to each slider 72 of the sliding base 7, and the side wall of the base 1 has a threaded hole corresponding to each long screw 73. Specifically, the slider 72 has a convex shape, with its top protruding and passing through the groove 11 downwards and upwards to be fixedly connected to the base plate 71, thereby reducing the width of the groove 11 and ensuring the strength of the base 1. The long screw 73 passes through the threaded hole on the side wall of the base 1 and is threadedly connected to the slider 72. By rotating the long screw 73, the base plate 71 can be driven to slide along the groove 11, thereby adjusting the position of the corresponding contour block. (Refer to...) Figure 3 The base 1 has a groove 11 around its circumference, and the groove 11 can be opened in the transverse, longitudinal or oblique direction of the base 1.
[0024] In another technical solution, the movable plate 2 includes a limiting plate 22 and a flip plate 24 detachably connected to the contour block 6. The limiting plate 22 is vertically disposed at one end of the sliding base 7. The flip plate 24 is disposed close to the limiting plate 22 and is rotatably connected to the sliding base 7 via a pivot 21. The limiting plate 22 and the flip plate 24 are symmetrically provided with screw holes, and the two are detachably connected by bolts 23. The limiting plate 22 is vertically disposed at one end of the sliding base 7 near the center of the base 1 to limit the flip plate 24. The flip plate 24 can be flipped upward to a vertical state, at which time the flip plate 24 and the limiting plate 22 are in contact, and then the two are fixed by the bolts 23. After unscrewing the bolts 23, the flip plate 24 can be flipped downward to abut against the sliding base 7, at which time the contour block connected to the flip plate 24 is away from the top of the lamp housing.
[0025] In another technical solution, the lifting device 6 includes a fixed base 61, a movable base 63, and a transmission device; the fixed base 61 is fixed on the base 1, and the movable base 63 is connected to the fixed base 61 through the transmission device and moves up and down relative to the fixed base 61 under the drive of the transmission device, thereby lifting the lamp housing to facilitate removal of the part.
[0026] Furthermore, the transmission device includes a rack 64 and a plurality of round rods 62 disposed within the fixed base 61; both ends of the rack 64 extend out of the fixed base 61; gears 67 meshing with the rack 64 are fixedly sleeved on the bottom of each round rod 62; the upper section of each round rod 62 is threaded and threadedly connected to an annular block 68, the annular block 68 being fixedly connected to the bottom of the movable base 62; and blind holes are provided at the bottom of the movable base 63 corresponding to each round rod 62. The inspector horizontally moves the rack 64, causing each gear 67 and the round rod 62 to rotate synchronously, thereby causing the movable base 63 to move up and down through the annular blocks 68 connected to the threaded sections of each round rod 62. Preferably, the top surface of the fixed seat 61 is provided with a receiving groove corresponding to each of the annular blocks 68. When the annular block 68 is located in the receiving groove, the movable seat 63 is located at the bottom of its stroke. At this time, its top surface is a certain distance away from the bottom of the lamp housing, which does not affect the detection.
[0027] Considering the irregular shape of the lamp housing and the varying heights of its bottom surface, multiple threaded blind holes are spaced apart on the top of the movable base 63, and screws 65 are installed in some or all of these threaded blind holes. The screws 65 serve as push rods, and their height is adjusted by varying the depth of each screw 65 into the threaded blind holes, thus adapting to different heights at the bottom of the lamp housing and ensuring the lamp housing is smoothly ejected. To prevent damage to the lamp housing during lifting, a rubber pad is attached to the top of each screw 65.
[0028] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A gauge for vehicle lamp housings, characterized in that, include: A base, the top surface of which is provided with a plurality of sliding bases along its circumference; the sliding bases can slide along the longitudinal or transverse direction of the base; The sliding base is divided into three parts: a fixed plate is fixedly installed on one part of the sliding base, a movable plate is rotatably connected to another part of the sliding base, and a clamp is fixedly installed on the remaining part of the sliding base; both the fixed plate and the movable plate can be detachably connected to a contour block on the side facing the center of the top surface of the base, and each contour block is sequentially joined to form a positioning groove that matches the shape of the headlight housing; the bottom of some of the contour blocks extends into a platform towards the center of the positioning groove to support the headlight housing; The top surface of the base is provided with a lifting device corresponding to the positioning groove, which is used to push the lamp housing upward from the bottom of the positioning groove.
2. The inspection tool for vehicle lamp housing as described in claim 1, characterized in that, The sliding base includes a base plate, a slider disposed at the bottom of the base plate, and a long screw threadedly connected to the slider; the top surface of the base is provided with a sliding groove corresponding to the slider of each sliding base, and the side wall of the base is provided with a threaded hole corresponding to each long screw.
3. The inspection tool for vehicle lamp housing as described in claim 1, characterized in that, The movable plate includes a limiting plate and a flip plate that is detachably connected to the molding block. The limiting plate is vertically disposed at one end of the sliding base. The flip plate is disposed close to the limiting plate and is rotatably connected to the sliding base via a rotating shaft. The limiting plate and the flip plate are symmetrically provided with screw holes, and the two are detachably connected by bolts.
4. The inspection tool for vehicle lamp housing as described in claim 1, characterized in that, The lifting device includes a fixed base, a movable base, and a transmission device; the fixed base is fixed on the base, and the movable base is connected to the fixed base through the transmission device and moves up and down relative to the fixed base under the drive of the transmission device.
5. The inspection tool for vehicle lamp housing as described in claim 4, characterized in that, The transmission device includes a rack and a plurality of round rods disposed in the fixed seat; both ends of the rack extend out of the fixed seat; the bottom of the round rods is fixedly fitted with gears that mesh with the rack; the upper section of the round rods is provided with threads and is threadedly connected to a ring block, the ring block being fixedly connected to the bottom of the movable seat, and the bottom of the movable seat having blind holes corresponding to each of the round rods.
6. The inspection tool for vehicle lamp housing as described in claim 4, characterized in that, The top of the movable seat is provided with multiple threaded blind holes spaced apart, and a screw is provided in some or all of the threaded blind holes.
7. The inspection tool for vehicle lamp housing as described in claim 6, characterized in that, A rubber pad is attached to the top of the screw.