A rear bumper trim piece gauge
Patent Information
- Application Number
- CN202521999965.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-09-17
AI Technical Summary
现有检具在检测过程中存在以下不足：传统检具多采用平面支撑结合单销定位，难以适应后保装饰件的复杂曲面结构，易导致零件贴合度不足，产生检测误差；侧向定位多采用固定挡块，装配时易与零件侧凸块发生硬性碰撞，造成表面划伤或变形
多个仿形定位底和测底座构成基准协同定位，解决了传统检具单一基准导致的曲面贴合问题，零件定位误差可控制在最小范围内，检测数据稳定性显著提高；成化设计将定位、压紧、检测流程整合为连贯操作，单次检测时间缩短；通过仿形底座与弹性限位组件的配合，避免了零件与检具的硬性接触，有效降低表面划伤风险。
Smart Images
Figure CN224872990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection tools, and specifically to an inspection tool for rear bumper trim parts. Background Technology
[0002] In the automotive parts manufacturing industry, rear bumper trim pieces are key components of the vehicle's exterior, and their dimensional accuracy directly affects assembly quality and the overall aesthetics of the vehicle. Existing inspection fixtures have the following shortcomings in the inspection process: Traditional inspection fixtures mostly use planar support combined with single-pin positioning, which is difficult to adapt to the complex curved surface structure of rear bumper trim pieces, easily leading to insufficient part fit and resulting in inspection errors; lateral positioning often uses fixed blocks, which are prone to hard collisions with the side protrusions of the parts during assembly, causing surface scratches or deformation. Utility Model Content
[0003] This utility model provides a rear bumper trim inspection tool to solve the problems of the prior art.
[0004] The objective of this utility model can be achieved through the following technical solution: A rear bumper trim inspection fixture includes: an inspection table, a first contour positioning base, a second contour positioning base, a side limiting seat, an elastic limiting component, a first inspection pin, a second inspection pin, and a go-ahead gauge. The first and second contour positioning bases are disposed on the inspection table. The first inspection pin passes through a through hole in the rear bumper trim, causing the rear bumper trim to fit against the first contour positioning base. The second inspection pin passes through a through hole in the rear bumper trim, causing the rear bumper trim to fit against the second contour positioning base. Both the first and second contour positioning bases are provided with positioning holes for the insertion of pins of the rear bumper trim. The side limiting seats are distributed around the rear bumper trim and fixed on the inspection table. The elastic limiting component is installed on the side limiting seat and its end contacts the side end of the rear bumper trim. The upper ends of the first and second contour positioning bases are provided with flipping components for pressing the rear bumper trim. The go-ahead gauge is inserted into the inspection hole of the rear bumper trim.
[0005] In a further improvement, the side limiting seat includes limiting seat one, limiting seat two, and limiting seat three fixed on the testing platform. Limiting seat one is provided in several groups and is located on the left side of the rear bumper trim. Limiting seat two is located on the front side of the rear bumper trim. Limiting seat three is located on the lower middle side of the rear bumper trim. The elastic limiting component includes a sliding rod, a limiting block, a spring, a sleeve rod, and a rear rod. The sleeve rod is fixedly installed inside the side limiting seat. The sliding rod is slidably installed inside the sleeve rod. The spring is sleeved on the sliding rod. The rear rod is fixed to the tail end of the sliding rod. One end of the spring is fixedly connected to one end of the rear rod. The other end of the spring is fixedly connected to the sleeve rod. The limiting block is fixed to the end of the sliding rod and the end fits against the side protrusion of the rear bumper trim. The shape of the limiting block matches the side protrusion at the corresponding position.
[0006] In a further improvement, the flipping assembly includes a fixed base, a rotating block, a pressure seat, and a limiting rod. The fixed base is fixed to the detection table, the right side of the rotating block is rotatably mounted on the fixed base, the pressure seat is fixed to the left side of the rotating block, and the limiting rod is slidably mounted on the fixed base and can pass through the rotating block.
[0007] In a further improvement, both the first contour positioning base and the second contour positioning base include a fixed base and a positioning block. The fixed base is fixed on the testing platform, and the positioning block is fixed on the fixed base by bolts. The positioning hole is located on the positioning block, and the positioning block is provided with insertion holes for matching testing pin one and testing pin two.
[0008] Compared with the prior art, the beneficial effects of this utility model rear bumper trim inspection tool are as follows: Multiple contouring positioning bases and measuring bases form a reference for collaborative positioning, which solves the problem of curved surface fitting caused by a single reference in traditional inspection fixtures. The positioning error of the parts can be controlled within a minimum range, and the stability of the test data is significantly improved. The integrated design combines the positioning, clamping and testing processes into a continuous operation, which shortens the time of a single test. Through the cooperation of the contouring base and the elastic limiting component, hard contact between the parts and the inspection fixture is avoided, which effectively reduces the risk of surface scratches. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a structural schematic diagram from another perspective of the present invention. Figure 3 This is a schematic diagram of the structure of the present invention with the rear decorative element removed. Figure 4 This is a structural schematic diagram of the rear bumper decorative component in this utility model. Figure 5 This is a structural schematic diagram of the rear bumper trim component from another perspective in this utility model. In the diagram, 1-inspection table, 2-contour positioning base one, 3-contour positioning base two, 31-fixed base, 32-positioning block, 33-insertion hole, 4-side limiting seat, 41-elastic limiting component, 411-sliding rod, 412-limiting block, 413-spring, 414-sleeve rod, 415-rear rod, 42-limiting seat one, 43-limiting seat two, 44-limiting seat three, 5-flipping component, 51-fixed seat, 52-rotating block, 53-pressing seat, 54-limiting rod, 6-inspection pin one, 7-inspection pin two, 8-go gauge, 9-rear bumper trim, 91-through hole one, 92-through hole two, 93-pin, 94-positioning hole, 95-inspection hole, 96-side protrusion. Detailed Implementation
[0010] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0011] The following is a description of the embodiments and appendices. Figures 1-5 The technical solution of this utility model will be further described below.
[0012] Example 1 A rear bumper trim piece inspection fixture includes: an inspection table 1, a contour positioning base 1 2, a contour positioning base 2 3, a side limiting seat 4, an elastic limiting component 41, an inspection pin 1 6, an inspection pin 2 7, and a go / no-go gauge 8. The contour positioning base 1 2 and the contour positioning base 2 3 are mounted on the inspection table 1. The inspection pin 1 6 passes through a through hole 91 in the rear bumper trim piece 9, causing the rear bumper trim piece 9 to fit against the contour positioning base 1 2. The inspection pin 2 7 passes through a through hole 92 in the rear bumper trim piece 9, causing the rear bumper trim piece 9 to fit against the contour positioning base 1 2. On the second base 3, both the first contour positioning base 2 and the second contour positioning base 3 are provided with positioning holes 94 for the insertion of the pin 93 of the rear bumper trim 9. The side limiting seats 4 are distributed around the rear bumper trim 9 and fixed on the detection table 1. The elastic limiting component 41 is installed on the side limiting seat 4 and its end contacts the side end of the rear bumper trim 9. The upper end of the first contour positioning base 2 and the second contour positioning base 3 is provided with a flipping component 5 for pressing the rear bumper trim 9. The go gauge 8 is inserted into the detection hole 95 of the rear bumper trim 9.
[0013] like Figures 1-5 As shown, the working principle of this utility model is as follows: The contour positioning base one and base two are machined based on the 3D model data of the rear bumper trim, and their surface contours perfectly match the lower surface of the part, providing a basic reference surface for inspection. During inspection, the part is first placed on the contour base, and inspection pin one passes through the through hole one of the rear bumper trim and inspection pin two passes through the through hole two of the rear bumper trim, so that the lower surface of the part is tightly attached to the base; at the same time, the pins on the part are inserted into the positioning holes of the base; the side limiting seats are distributed around the part to restrict the horizontal displacement of the part from the side; if the rear bumper trim can be installed in the inspection fixture, the rear bumper trim product is qualified; otherwise, it is unqualified.
[0014] After the flipping component at the top of the contour base rotates downwards, the part is pressed firmly onto the surface of the base by the pressure seat.
[0015] After positioning, insert a go / no-go gauge into the inspection hole of the part. Determine whether the hole diameter is within the tolerance range by checking the fit between the go end and the no-go end. If the go end can pass but the no-go end cannot, the product is qualified; otherwise, the product is unqualified. This enables rapid verification of critical dimensions.
[0016] The multi-reference collaborative positioning method solves the surface fitting problem caused by the single reference of traditional fixtures, and the part positioning error can be controlled within a minimum range, significantly improving the stability of the test data. The integrated design integrates the positioning, clamping, and testing processes into a continuous operation, reducing the steps of bolt loading and unloading compared to traditional fixtures, and shortening the time for a single test. Enhanced protection: The combination of the contour base and the elastic limiting component avoids hard contact between the part and the inspection tool, effectively reducing the risk of surface scratches.
[0017] As a further preferred embodiment, the side limiting seat 4 includes a first limiting seat 42, a second limiting seat 43, and a third limiting seat 44 fixed to the detection table 1. The first limiting seat 42 is provided in several groups and is located on the left side of the rear bumper trim 9. The second limiting seat 43 is located on the front side of the rear bumper trim 9. The third limiting seat 44 is located on the lower side of the middle portion of the rear bumper trim 9. The elastic limiting assembly 41 includes a sliding rod 411, a limiting block 412, a spring 413, a sleeve rod 414, and a rear rod 415. The sleeve rod 414... The sliding rod 411 is slidably disposed inside the sleeve rod 414 and fixedly disposed inside the side limiting seat 4. The spring 413 is sleeved on the sliding rod 411. The rear rod 415 is fixed to the tail end of the sliding rod 411. One end of the spring 413 is fixedly connected to one end of the rear rod 415, and the other end of the spring 413 is fixedly connected to the sleeve rod 414. The limiting block 412 is fixed to the end of the sliding rod 411 and the end is attached to the side protrusion 96 of the rear bumper trim 9. The shape of the limiting block 412 matches the side protrusion 96 at the corresponding position.
[0018] The sleeve of the elastic limiting assembly is fixed inside the side limiting seat. The sliding rod can extend and retract along the axial direction of the sleeve, and the spring is always in a pre-compressed state. The elastic force is transmitted to the limiting block at the end of the sliding rod through the rear rod. When the part is installed, the limiting block first contacts the side protrusion of the part, and the spring pushes the limiting block to fit tightly against the surface of the side protrusion. The limiting block adopts a contour-following design, and its contour matches the side protrusion.
[0019] In a further preferred embodiment, the flipping assembly 5 includes a fixed base 51, a rotating block 52, a pressure seat 53, and a limiting rod 54. The fixed base 51 is fixed to the testing table 1. The rotating block 52 is rotatably mounted on the fixed base 51 on its right side. The pressure seat 53 is fixed to the left side of the rotating block 52. The limiting rod 54 is slidably mounted on the fixed base 51 and can pass through the rotating block 52. Compared to traditional bolt tightening methods, the flipping structure shortens the time for loading and unloading parts and reduces the labor intensity of operators.
[0020] As a further preferred embodiment, both the contour positioning base 1 2 and the contour positioning base 2 3 include a fixed base 31 and a positioning block 32. The fixed base 31 is fixed to the inspection table 1, and the positioning block 32 is fixed to the fixed base 31 by bolts. The positioning hole 94 is located on the positioning block 32, and the positioning block 32 is provided with insertion holes 33 for matching inspection pin 1 6 and inspection pin 2 7. The positioning block can be replaced individually after wear, extending the overall service life of the fixture and reducing maintenance costs.
[0021] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A rear bumper trim inspection tool, characterized in that, include: The system includes a testing platform, a contour positioning base one, a contour positioning base two, a side limiting seat, an elastic limiting component, a detection pin one, a detection pin two, and a go-ahead gauge. Contour positioning base one and contour positioning base two are mounted on the testing platform. Detection pin one passes through a through hole one of the rear bumper trim, causing the rear bumper trim to fit against contour positioning base one. Detection pin two passes through a through hole two of the rear bumper trim, causing the rear bumper trim to fit against contour positioning base two. Both contour positioning base one and contour positioning base two have positioning holes for inserting pins into the rear bumper trim. The side limiting seats are distributed around the rear bumper trim and fixed on the testing platform. The elastic limiting component is mounted on the side limiting seats, with its end contacting the side end of the rear bumper trim. The upper ends of contour positioning base one and contour positioning base two have flipping components for pressing the rear bumper trim. The go-ahead gauge is inserted into the detection hole of the rear bumper trim.
2. The rear bumper trim inspection fixture according to claim 1, characterized in that, The side limiting seat includes limiting seat one, limiting seat two, and limiting seat three fixed on the testing platform. Limiting seat one is provided in several sets and is located on the left side of the rear bumper trim. Limiting seat two is located on the front side of the rear bumper trim. Limiting seat three is located on the lower middle side of the rear bumper trim. The elastic limiting component includes a sliding rod, a limiting block, a spring, a sleeve rod, and a rear rod. The sleeve rod is fixedly installed inside the side limiting seat. The sliding rod is slidably installed inside the sleeve rod. The spring is sleeved on the sliding rod. The rear rod is fixed to the tail end of the sliding rod. One end of the spring is fixedly connected to one end of the rear rod. The other end of the spring is fixedly connected to the sleeve rod. The limiting block is fixed to the end of the sliding rod and the end fits against the side protrusion of the rear bumper trim. The shape of the limiting block matches the side protrusion at the corresponding position.
3. The rear bumper trim inspection fixture according to claim 1, characterized in that, The flipping assembly includes a fixed base, a rotating block, a pressure seat, and a limiting rod. The fixed base is fixed on the detection table, the right side of the rotating block is rotatably mounted on the fixed base, the pressure seat is fixed on the left side of the rotating block, and the limiting rod is slidably mounted on the fixed base and can pass through the rotating block.
4. A rear bumper trim inspection fixture according to claim 1, characterized in that, Both the contour positioning base one and the contour positioning base two include a fixed base and a positioning block. The fixed base is fixed on the testing platform, and the positioning block is fixed on the fixed base by bolts. The positioning hole is located on the positioning block, and the positioning block is provided with a matching insertion hole for testing pin one and testing pin two.