A functional durability test tooling for air bags

Abstract

The utility model belongs to the field of test tool, concretely relates to a kind of function endurance test tool for air bag, including fixed base plate, the opposite side of fixed base plate is equipped with bearing screw rod, upper support plate is equipped with mounting through-hole to the position of bearing screw rod, bearing screw rod is connected with upper support plate sliding after passing through mounting through-hole, the middle part of upper support plate top is equipped with weight installation rod, the lower of upper support plate is equipped with at least one platen structure that can be adjusted according to the different layer of air bag.The utility model can adapt to the air bag of different layers, and according to the different layer of air bag, it is equipped with the disc weight of different weight, so it improves test efficiency, reduces test cost, and operation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of testing fixtures, specifically relating to a functional durability testing fixture for air bags. Background Technology

[0002] The core of functional durability testing for airbags is to simulate the durability of airbags during a massage process in a car seat. During testing, parameters such as counterweight specifications, the number of airbag layers, and pressure holding time directly affect the fatigue life and performance stability of the airbags. However, existing testing fixtures have significant limitations. Different numbers of airbag layers require different testing fixtures and counterweights, resulting in low efficiency, high testing costs, and inconvenient operation. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a functional durability testing fixture for air bags. This testing fixture can be adapted to air bags with different numbers of layers and is equipped with disc weights of different weights according to the number of layers of the air bag, thereby improving testing efficiency, reducing testing costs, and making operation more convenient.

[0004] To achieve the above objectives, this utility model provides a functional durability testing fixture for air bags, including a fixed base plate, bearing screws on opposite sides of the fixed base plate, an upper support plate with mounting through holes at positions relative to the bearing screws, the bearing screws passing through the mounting through holes and slidably connected to the upper support plate, a weight mounting rod in the middle of the upper part of the upper support plate, and at least one pressure plate structure below the upper support plate that can be adjusted according to the number of air bag layers.

[0005] As a further optimization, a linear bearing is provided at the position of the upper support plate relative to the mounting through hole, and the bearing screw passes through the mounting through hole and slides in connection with the upper support plate.

[0006] As a further optimization, the pressure plate structure includes a connecting plate and a U-shaped pressure plate. The connecting plate is connected to the opposite sides of the upper support plate. The connecting plate is provided with at least one inner adjustment hole. The outer sides of the two connecting plates are provided with U-shaped pressure plates. The U-shaped pressure plates are provided with outer adjustment holes at positions opposite to the inner adjustment holes. The adjustment knob passes through the outer adjustment holes and the inner adjustment holes and is connected to the nut.

[0007] As a further optimization, a scale is provided on the connecting plate.

[0008] As a further optimization, a handle is provided on the top of the upper support plate.

[0009] As a further optimization, a monitoring and control structure is connected to the air bag.

[0010] As a further optimization, the monitoring and control structure includes a pressure sensor, a recorder, and a flow meter. The air bag is connected to the pressure sensor via an air tube. The pressure sensor is connected to the recorder via a wire and to the flow meter via an air tube. The flow meter is connected to a solenoid valve via an air tube. The solenoid valve is connected to the PLC control system via a wire and to a pressure regulating valve via an air tube. The pressure regulating valve is connected to an air source via an air tube.

[0011] Advantages and beneficial effects of this utility model

[0012] 1. This utility model utilizes the cooperation of linear bearings and bearing screws to allow the upper support plate to slide up and down relative to the fixed base plate. A weight mounting rod is provided in the upper center of the upper support plate for placing a disc weight to simulate the different pressures exerted on the air bag by different people during massage. A pressure plate structure is provided below the upper support plate. By adjusting the pressure plate structure, it can be adapted to air bags with different layers. This solves the problem that existing testing fixtures require changing different fixtures and counterweights according to the different layers of air bags, greatly improving testing efficiency, reducing testing costs, and making operation more convenient.

[0013] 2. This utility model has a monitoring and control structure connected to the air bag. The pressure sensor can detect the pressure value of the air bag, and the recorder connected to the pressure sensor can display the pressure value of the air bag in real time and generate a pressure curve. The flow meter can control the gas flow rate, and the PLC control system can set the inflation time, deflation time and holding time of the air bag. When the specified time is reached, the PLC control system will control the solenoid valve to switch, so the operation is more convenient. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is an axonometric view of the overall structure provided in this embodiment of the utility model;

[0016] Figure 2 This is a side view of the overall structure provided in the embodiment of this utility model;

[0017] Figure 3 This is a top-view axial view of the overall structure provided in this embodiment of the utility model;

[0018] Figure 4 This is a side view of the overall structure provided in this embodiment of the utility model;

[0019] Figure 5 This is a front view of the overall structure provided in the embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the monitoring and control structure provided in an embodiment of this utility model.

[0021] Reference numerals in the attached drawings: 1. Fixed base plate; 2. Bearing screw; 3. Upper support plate; 4. Linear bearing; 5. Weight mounting rod; 6. Air bag; 7. Pressure plate structure; 7. Connecting plate; 71. Inner adjustment hole; 711. U-shaped pressure plate; 72. Outer adjustment hole; 721. Adjustment knob; 73. Scale; 8. Handle; 9. Pressure sensor; 101. Recorder; 102. Flow meter; 103. Solenoid valve; 104. PLC control system; 105. Air source; 106. Three-way air pipe connector; 107. Pressure regulating valve; 108. Circular weight; 11. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the accompanying drawings. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0023] like Figures 1-5 As shown, a functional durability testing fixture for airbags includes a fixed base plate 1. Bearing screws 2 are provided on the left and right sides of the fixed base plate 1. An upper support plate 3 has mounting through holes relative to the bearing screws 2. A linear bearing 4 is provided on the top of the upper support plate 3 relative to the mounting through holes. The bearing screws 2 pass through the mounting through holes and slide against the upper support plate 3 after passing through the linear bearing 4. A weight mounting rod 5 is provided in the middle of the upper part of the upper support plate 3. Multiple circular weights 11 are mounted on the weight mounting rod 5 to make the pressure distribution more uniform. The rod 5 is equipped with disc weights 11 of different weights, which can simulate the pressure of different counterweights on the air bag 6. The bottom of the upper support plate 3 is provided with at least one pressure plate structure 7 that can be adjusted according to the number of layers of the air bag 6. In this embodiment, two pressure plate structures 7 are provided on the front and rear sides of the bottom of the upper support plate 3, so that two receiving cavities for placing the air bag 6 are formed between the pressure plate structure 7 and the fixed base plate 1. The two receiving cavities can hold two air bags with the same number of layers for testing, or two air bags with different numbers of layers can be placed for testing by adjusting the pressure plate structure 7.

[0024] like Figure 1 and Figure 4As shown, the pressure plate structure 7 includes two connecting plates 71 and a U-shaped pressure plate 72. The two connecting plates 71 are connected to the left and right sides of the bottom of the upper support plate 3. Each connecting plate 71 has at least one inner adjustment hole 711. In this embodiment, to improve the reliability and stability of the connection, two inner adjustment holes 711 are provided on the connecting plate 71. The inner adjustment holes 711 can be round holes or oblong holes. The outer sides of the two connecting plates 71 are provided with U-shaped pressure plates 72. The U-shaped pressure plates 72 are provided with oblong outer adjustment holes 721 at positions relative to the inner adjustment holes 711. The adjustment knob 73 passes through the outer adjustment hole 721 and the inner adjustment hole 711 and is connected to the nut. When the adjustment knob 73 is tightened with the nut, the U-shaped pressure plate 72 and the connecting plate 71 can be clamped and their positions fixed. When the adjustment knob 73 is loosened with the nut, the U-shaped pressure plate 72 can be adjusted up and down relative to the two connecting plates 71 to facilitate adjustment according to the different number of air bag layers, so that the adjusted U-shaped pressure plate 72 presses on the air bag 6.

[0025] As a further optimization, the connecting plate 71 is provided with a scale 8. When the height of the air bag at the maximum pressure value is known, the height of the U-shaped pressure plate 72 can be adjusted by the scale 8 so that the height of the receiving cavity on the corresponding side meets the requirements of the height of the air bag 6.

[0026] As a further optimization, handles 9 are provided on the front and rear sides of the top of the upper support plate 3. The handles 9 facilitate lifting the upper support plate 3 upward so that the air bag 6 can be placed in the receiving cavity.

[0027] As a further optimization, both air bags 6 are connected to a monitoring and control structure, which includes a pressure sensor 101, a recorder 102, and a flow meter 103. The air bag 6 is connected to the pressure sensor 101 via an air tube. The pressure sensor 101 is connected to the recorder 102 via a wire and to the flow meter 103 via an air tube. The pressure sensor 101 is used to detect the current pressure in the corresponding air bag 6. The recorder 102 is used to display the pressure value of the air bag 6 in real time and generate a pressure curve. The flow meter 103 is connected to a solenoid valve 104 via an air tube. The flow meter 103 is used to control the gas flow rate. The solenoid valve 104 is connected to a PLC control system 105 via a wire and is used to control whether the gas flows in the air tube. The PLC control system 105 can set the inflation time, deflation time, and holding time of the air bag 6. When the specified time is reached, the PLC control system 105 will control the solenoid valve 104 to open and close, thus making the operation more convenient. The solenoid valves 104 on both sides are connected to the pressure regulating valve 108 through the three-way air pipe connector 107. The pressure regulating valve 108 is connected to the air source 106 through the air pipe. The pressure regulating valve 108 is used to limit the pressure of the air source 106 so that the gas pressure reaches the pressure required for the experiment and prevents the pressure of the air source 106 from being too high at the moment the experiment is started, which would cause the air bag 6 to malfunction.

[0028] Since the air bag needs to undergo functional durability testing at normal temperature, low temperature, high temperature and high humidity, this testing fixture can be placed in a high and low temperature alternating damp heat test chamber for functional durability testing. The high and low temperature alternating damp heat test chamber can simulate an environment with a temperature range of -50℃ to 150℃ and a humidity range of 20% to 98%, which meets the requirements of functional durability testing.

[0029] Work process

[0030] Tooling working process

[0031] The air bag 6 is placed on the fixed base plate 1 and fixed by pressing the edge of the air bag 6 with a pressure plate or by connecting the air bag 6 to the fixed base plate 1 with bolts. At this time, if the height of the air bag 6 when it reaches the maximum pressure value is known, the height of the U-shaped pressure plate 72 can be adjusted according to the scale 8. If the height of the air bag 6 when it reaches the maximum pressure value is unknown, the height of the U-shaped pressure plate 72 needs to be adjusted after the air bag 6 is inflated so that the air bag 6 can be in close contact with the U-shaped pressure plate 72. Then, according to the requirements of different layers of air bags, the disc weight 11 is installed on the weight mounting rod 5. Finally, by controlling the inflation and deflation of the air bag 6, the disc weight 11 is driven to move up and down to realize the simulation of the pressure of the person on the air bag during seat massage.

[0032] Monitoring and control structure working process

[0033] After the gas source 106 is regulated by the pressure regulating valve 108, the gas can reach the pressure required for the experiment. Then, through the three-way gas pipe structure 107, the gas flows through the solenoid valve 104, flow meter 103, and pressure sensor 101 on both sides into the two gas bags 6. When the specified time is reached, the PLC control system 105 will control the solenoid valve 104 to close, stop the gas supply, and maintain the pressure for a period of time. When the pressure maintenance time is reached, the PLC control system 105 will control the solenoid valve 104 to open, the gas bag 6 will start to release gas, and remain still for a period of time to complete one experimental cycle, and run in this cycle.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A fixture for testing the functional durability of air bags, characterized in that, The system includes a fixed base plate (1), on which bearing screws (2) are provided on opposite sides. The upper support plate (3) has mounting through holes at the position of the bearing screws (2). The bearing screws (2) pass through the mounting through holes and are slidably connected to the upper support plate (3). A weight mounting rod (5) is provided in the middle of the upper part of the upper support plate (3). At least one pressure plate structure (7) is provided below the upper support plate (3) that can be adjusted according to the number of layers of air bags (6).

2. The functional durability testing fixture for air bags according to claim 1, characterized in that, The upper support plate (3) is provided with a linear bearing (4) at the position opposite to the mounting through hole. The bearing screw (2) passes through the mounting through hole and slides with the upper support plate (3).

3. The functional durability testing fixture for air bags according to claim 1, characterized in that, The pressure plate structure (7) includes a connecting plate (71) and a U-shaped pressure plate (72). The connecting plate (71) is connected to the opposite sides of the upper support plate (3). The connecting plate (71) is provided with at least one inner adjustment hole (711). The outer sides of the two connecting plates (71) are provided with U-shaped pressure plates (72). The U-shaped pressure plate (72) is provided with an outer adjustment hole (721) at a position opposite to the inner adjustment hole (711). The adjustment knob (73) passes through the outer adjustment hole (721) and the inner adjustment hole (711) and is connected to the nut.

4. The functional durability testing fixture for air bags according to claim 3, characterized in that, The connecting plate (71) is equipped with a scale (8).

5. The functional durability testing fixture for air bags according to claim 1, characterized in that, A handle (9) is provided above the upper support plate (3).

6. The functional durability testing fixture for air bags according to claim 1, characterized in that, The air bag (6) is connected to a monitoring and control structure.

7. The functional durability testing fixture for air bags according to claim 6, characterized in that, The monitoring and control structure includes a pressure sensor (101), a recorder (102), and a flow meter (103). The air bag (6) is connected to the pressure sensor (101) via an air tube. The pressure sensor (101) is connected to the recorder (102) via a wire and to the flow meter (103) via an air tube. The flow meter (103) is connected to a solenoid valve (104) via an air tube. The solenoid valve (104) is connected to a PLC control system (105) via a wire and to a pressure regulating valve (108) via an air tube. The pressure regulating valve (108) is connected to an air source (106) via an air tube.

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