A testing fixture for a muffler pack of an automobile exhaust system

By designing a fixture specifically for automotive exhaust system mufflers, and utilizing simulation positioning and inspection head components, rapid and accurate inspection was achieved. This solved the problems of time-consuming and prone to missed inspections in traditional manual inspection, and improved the product qualification rate.

CN224415940UActive Publication Date: 2026-06-26SHANGHAI ZILIN AUTO PARTS CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI ZILIN AUTO PARTS CO LTD
Filing Date
2025-09-10
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The traditional manual inspection process for the dimensions of automotive exhaust system mufflers is time-consuming and prone to omissions, leading to a decrease in product qualification rate.

Method used

Design a tool specifically for the muffler package of automotive exhaust systems, comprising a simulated positioning component, a simulated pressure plate, a push rod component, and a test head component, to quickly complete the inspection using a go/no-go gauge.

Benefits of technology

This improved testing efficiency, reduced missed detections, and ensured a high product quality pass rate.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224415940U_ABST
    Figure CN224415940U_ABST
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Abstract

The utility model relates to a testing fixture technical field, concretely is a kind of testing fixture for automobile exhaust system muffler bag. A kind of testing fixture for automobile exhaust system muffler bag, including bottom plate, detection head, its characterized in that: bottom plate is connected with analog positioning assembly by connecting seat, the lower portion of analog positioning assembly is equipped with analog pressing plate, the left and right sides of the front portion of analog pressing plate are equipped with top rod assembly respectively, the lower portion of analog pressing plate one side is equipped with detection head assembly, and the bottom plate on the other side of analog pressing plate is equipped with several stop gauges. Compared with prior art, provide a kind of testing fixture for automobile exhaust system muffler bag, design a kind of testing fixture specially for automobile exhaust system muffler bag, directly place product on the testing fixture and lock and fix, subsequent can be quickly completed the detection work of product by stop gauge, obviously improve detection efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, specifically an inspection tool for muffler packs in automotive exhaust systems. Background Technology

[0002] like Figure 1 As shown, after the automotive exhaust system muffler package is stamped, it needs to undergo dimensional testing to ensure the product's pass rate. However, traditional testing involves manual measurement of each dimension, which is very time-consuming and prone to omissions, leading to the return of subsequent products in the same batch for re-inspection, thus failing to meet customer requirements. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this utility model provides a gauge for muffler packs in automotive exhaust systems. A gauge specifically designed for automotive exhaust system muffler packs is provided, on which the product is placed and locked in place. Subsequent inspection can be quickly completed using a go / no-go gauge, significantly improving inspection efficiency.

[0004] To achieve the above objectives, a gauge for a muffler package in an automotive exhaust system is designed, comprising a base plate and a test head. The base plate is connected to a simulated positioning component via a connecting seat. A simulated pressure plate is provided below the simulated positioning component. Top rod assemblies are provided on the left and right sides of the front of the simulated pressure plate, and a test head assembly is provided on one side below the simulated pressure plate. Several go / no-go gauges are provided on the base plate on the other side of the simulated pressure plate.

[0005] The simulated positioning component includes a simulated bracket, a connecting plate, and spring pins. There are two simulated brackets arranged parallel to each other. The two ends of the two simulated brackets are respectively connected to the connecting plate. The connecting plates at both ends are respectively connected to the top of the connecting seat by adjusting bolts. Several spring pin connecting rods are connected to one end of each rod on the side of the simulated bracket, and the other end of each rod is connected to a spring pin.

[0006] The bottom of the simulated support has an arc structure.

[0007] The simulated pressure plate has a ring structure, and its structure matches the muffler structure of the car exhaust system. Waist-shaped holes are provided on the left and right sides of the lower part of the simulated pressure plate.

[0008] Pressure plate support seats are located on the lower left and right sides of the simulated pressure plate. The top of the pressure plate support seat is connected to a zero-position pin, which is inserted into the waist-shaped hole of the simulated pressure plate.

[0009] The push rod assembly includes a cylinder support seat, a cylinder, and a push rod. Cylinder support seats are respectively provided on the outer side of the two pressure plate support seats. The bottom of the cylinder support seat is fixedly connected to the base plate. The cylinder is fixedly connected to the upper part of the cylinder support seat. The driving end of the cylinder is connected to one end of the push rod, and the other end of the push rod abuts against the lower side end face of the simulated pressure plate.

[0010] The detection head assembly includes a detection head connector and a detection head. The detection head connector is located on one side of the upper part of the simulated pressure plate. The bottom of the detection head connector is fixedly connected to the base plate, and the detection head is connected to the detection head connector.

[0011] Handles are connected to the left and right sides of the base plate, respectively.

[0012] Compared with the prior art, this utility model provides a gauge for muffler packs in automotive exhaust systems. A gauge specifically designed for muffler packs in automotive exhaust systems is designed so that the product can be directly placed on the gauge and locked in place. Subsequently, the product can be quickly inspected using a go / no-go gauge, which significantly improves the inspection efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a muffler package for an automotive exhaust system.

[0014] Figure 2 This is a schematic diagram of the structure of the inspection tool of this utility model.

[0015] Figures 3 to 5 This is a schematic diagram of the simulated positioning component structure in this utility model.

[0016] Figure 6 This is a schematic diagram of the testing status of a muffler package for an automotive exhaust system on the inspection fixture of this utility model.

[0017] Figure 7 This is a schematic diagram of reference A in the inspection fixture of this utility model.

[0018] Figure 8 This is a schematic diagram of the B datum in the inspection fixture of this utility model.

[0019] See Figure 2 , Figure 3 1 is the base plate, 2 is the connecting seat, 3 is the simulated positioning component, 3-1 is the simulated bracket, 3-2 is the connecting plate, 3-3 is the spring pin connecting rod, 3-4 is the spring pin, 4 is the simulated pressure plate, 5 is the push rod assembly, 5-1 is the cylinder support seat, 5-2 is the cylinder, 5-3 is the push rod, 6 is the detection head assembly, 6-1 is the detection head connecting seat, 6-2 is the detection head, 7 is the stop and go gauge, 8 is the handle, 9 is the pressure plate support seat, and 10 is the zero position pin. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figures 2 to 5 As shown, the base plate 1 is connected to the simulation positioning component 3 via the connecting seat 2. The simulation positioning component 3 is provided with a simulation pressure plate 4 below it. The left and right sides of the front of the simulation pressure plate 4 are respectively provided with top rod components 5. The lower side of the simulation pressure plate 4 is provided with a detection head component 6. Several go gauges 7 are provided on the base plate 1 on the other side of the simulation pressure plate 4.

[0022] The simulation positioning component 3 includes a simulation bracket, a connecting plate, and spring pins. There are two simulation brackets 3-1, which are arranged in parallel to each other. The two ends of the two simulation brackets 3-1 are respectively connected to the connecting plate 3-2. The connecting plates 3-2 at both ends are respectively connected to the top of the connecting seat 2 by adjusting bolts. Several spring pin connecting rods 3-3 are connected to one end of the side of the simulation bracket 3-1, and the other end of the spring pin connecting rods 3-3 is connected to the spring pin 3-4.

[0023] The bottom of the simulated support 3-1 has an arc structure.

[0024] The simulated pressure plate 4 has a ring structure, and its structure matches the muffler structure of the car exhaust system. The left and right sides of the lower part of the simulated pressure plate 4 are respectively provided with waist-shaped holes.

[0025] Pressure plate support seats 9 are respectively provided on the lower left and right sides of the simulated pressure plate 4. The top of the pressure plate support seat 9 is connected to the zero position pin 10, and the zero position pin 10 is inserted into the waist-shaped hole of the simulated pressure plate 4.

[0026] The push rod assembly 5 includes a cylinder support seat, a cylinder, and a push rod. Cylinder support seats 5-1 are respectively provided on the outer side of the two pressure plate support seats 9. The bottom of the cylinder support seat 5-1 is fixedly connected to the base plate 1. The upper part of the cylinder support seat 5-1 is fixedly connected to the cylinder 5-2. The driving end of the cylinder 5-2 is connected to one end of the push rod 5-3. The other end of the push rod 5-3 abuts against the lower side end face of the simulated pressure plate 4.

[0027] The detection head assembly 6 includes a detection head connector and a detection head. A detection head connector 6-1 is provided on one side of the upper part of the simulation pressure plate 4. The bottom of the detection head connector 6-1 is fixedly connected to the base plate 1, and the detection head 6-2 is connected to the detection head connector 6-1.

[0028] Handles 8 are connected to the left and right sides of the base plate 1, respectively.

[0029] The testing process for this utility model is as follows:

[0030] 1. Remove the simulated positioning component 3 and simulated pressure plate 4 from the inspection fixture of this utility model, and place the product to be inspected on the bottom 1;

[0031] 2. Then, first install the simulated positioning component 3, and then install the simulated pressure plate 4;

[0032] 3. Simulate positioning component 3: each spring pin 3-4 presses the product, and the position of each spring pin 3-4 is reference A;

[0033] 4. The driving end of the cylinder 5-2 of the two-sided push rod assembly 5 pushes the push rod 5-3, so that the push rods 5-3 on both sides press the simulated pressure plate 4, and after pressing, it serves as the B base;

[0034] 5. Pull the detection head 6-2 of the detection head assembly 6 into the hole to be detected, and use the detection head 6-2 to detect the position of the hole;

[0035] 6. Perform tests at each position using the no-go gauge 7. If the go end of the no-go gauge 7 can pass through the product, but the no-go end cannot, the product is qualified; otherwise, it is unqualified.

Claims

1. A gauge for a muffler pack in an automotive exhaust system, comprising a base plate and a testing head, characterized in that: The base plate (1) is connected to the simulation positioning component (3) via the connecting seat (2). The simulation positioning component (3) is provided with a simulation pressure plate (4) below it. The left and right sides of the front of the simulation pressure plate (4) are provided with top rod components (5). The detection head component (6) is provided on one side below the simulation pressure plate (4). Several go gauges (7) are provided on the base plate (1) on the other side of the simulation pressure plate (4).

2. The inspection tool for a muffler pack in an automotive exhaust system according to claim 1, characterized in that: The simulated positioning component (3) includes a simulated bracket, a connecting plate, and a spring pin. There are two simulated brackets (3-1), which are arranged in parallel. The two ends of the two simulated brackets (3-1) are respectively connected to the connecting plate (3-2). The connecting plates (3-2) at both ends are connected to the top of the connecting seat (2) by adjusting bolts. Several spring pin connecting rods (3-3) are connected to one end of the side of the simulated bracket (3-1), and the other end of the spring pin connecting rods (3-3) is connected to the spring pin (3-4).

3. A gauge for a muffler pack in an automotive exhaust system according to claim 2, characterized in that: The bottom of the simulated support (3-1) is an arc structure.

4. The inspection tool for a muffler pack in an automotive exhaust system according to claim 1, characterized in that: The simulated pressure plate (4) is a ring structure. The structure of the simulated pressure plate (4) matches the structure of the muffler of the automobile exhaust system. Waist-shaped holes are provided on the left and right sides of the lower part of the simulated pressure plate (4).

5. A gauge for a muffler pack in an automotive exhaust system according to claim 1 or 4, characterized in that: Pressure plate support seats (9) are provided on the lower left and right sides of the simulated pressure plate (4). The top of the pressure plate support seat (9) is connected to the zero position pin (10), and the zero position pin (10) is inserted into the waist-shaped hole of the simulated pressure plate (4).

6. A gauge for a muffler pack in an automotive exhaust system according to claim 1, characterized in that: The push rod assembly (5) includes a cylinder support seat, a cylinder, and a push rod. A cylinder support seat (5-1) is provided on the outer side of the two pressure plate support seats (9). The bottom of the cylinder support seat (5-1) is fixedly connected to the base plate (1). A cylinder (5-2) is fixedly connected to the upper part of the cylinder support seat (5-1). The driving end of the cylinder (5-2) is connected to one end of the push rod (5-3). The other end of the push rod (5-3) abuts against the lower side end face of the simulated pressure plate (4).

7. A gauge for a muffler pack in an automotive exhaust system according to claim 1, characterized in that: The detection head assembly (6) includes a detection head connector and a detection head. A detection head connector (6-1) is provided on one side of the upper part of the simulation pressure plate (4). The bottom of the detection head connector (6-1) is fixedly connected to the base plate (1). The detection head (6-2) is connected to the detection head connector (6-1).

8. A gauge for a muffler pack in an automotive exhaust system according to claim 1, characterized in that: The bottom plate (1) is connected to handles (8) on the left and right sides respectively.