Back cushion air permeability detection device for child safety seat production

Abstract

The invention belongs to the technical field of air permeability detection, and discloses a cushion air permeability detection device for child safety seat production, which comprises a first air pipe and a trawl net, the inner wall of the first air pipe is fixedly connected with a first bracket, the inner wall of the first air pipe is fixedly connected with a pressing net, and the trawl net is located right below the pressing net. The outer wall of the first air pipe is sleeved with a second air pipe, the outer wall of the second air pipe is fixedly connected with two connecting lugs, the outer wall of the second air pipe is sleeved with a third air pipe, the outer wall of the third air pipe is fixedly connected with two supporting blocks, the tops of the supporting blocks are fixedly connected with sliding rods, and the outer walls of the sliding rods are sleeved with springs. The top of the sliding rod penetrates through the connecting lug and is slidably connected with the connecting lug, and the outer wall of the first air pipe is fixedly connected with a first sliding block. The pressing net and the trawl net extrude the back cushion, the size of an internal gap of the back cushion in a pressed state can be simulated, the simulation mode is closer to the actual use condition, and evaluation of the performance of the back cushion is facilitated.

Description

Technical Field

[0001] The invention relates to the field of air permeability detection, and more particularly to an air permeability detection device for a cushion used in the production of a child safety seat. Background Art

[0002] The cushion air permeability test device for child safety seat production is mainly used to test the air permeability of child safety seat cushions. By simulating the gas flow in actual use, the air permeability of the cushion material is evaluated to ensure that the cushion can maintain good air circulation during use and avoid discomfort to children due to long-term contact with non-air-permeable materials.

[0003] In the prior art, a document with publication number CN115656000A discloses an air permeability detection device for a safety seat cushion. Although the device in the document is capable of detecting the cushion, the detection is performed when the cushion is in an unpressurized state. When the cushion is in use, it is usually in a compressed state. Therefore, the existing detection method is not convenient for detecting the air permeability of the airflow of the cushion in a compressed state. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a cushion air permeability detection device for the production of child safety seats, which can simulate the size of the internal gap of the cushion under pressure by squeezing the cushion through a pressing net and a trawl net. This simulation method is closer to actual use and helps to evaluate the performance of the cushion.

[0005] In order to solve the above-mentioned technical problems, the present invention proposes a cushion permeability detection device for the production of child safety seats, including a first air duct and a trawl net, wherein the inner wall of the first air duct is fixedly connected to a first bracket, the inner wall of the first air duct is fixedly connected to a pressure net, the trawl net is located directly below the pressure net, the outer wall of the first air duct is sleeved with a second air duct, the outer wall of the second air duct is fixedly connected to two connecting ears, the outer wall of the second air duct is sleeved with a third air duct, the outer wall of the third air duct is fixedly connected to two supporting blocks, the top of the supporting block is fixedly connected to a sliding rod, the outer wall of the sliding rod is sleeved with a spring, the top of the sliding rod passes through the connecting ear and is slidably connected thereto, and the outer wall of the first air duct is fixedly connected to a first slider.

[0006] As a preferred solution of the cushion air permeability detection device for producing child safety seats described in the present invention, it also includes an operating table, the outer wall of the operating table is provided with a connecting groove, the outer wall of the operating table is provided with a docking groove, and the top of the operating table is provided with a mounting hole.

[0007] As a preferred solution of the cushion air permeability detection device for producing child safety seats of the present invention, a second conveyor is fixedly installed on the inner wall of the connecting groove, and a first conveyor is fixedly installed on the inner wall of the docking groove.

[0008] As a preferred solution of the cushion permeability detection device for the production of child safety seats described in the present invention, a linear guide rail is fixedly installed on the outer wall of the operating table, a push plate is fixedly connected to the top of the sliding part of the linear guide rail, and two limit plates are fixedly connected to the outer wall of the push plate, and the limit plates are used to limit the cushion.

[0009] As a preferred solution of the cushion permeability detection device for the production of child safety seats described in the present invention, wherein: the outer wall of the operating table is fixedly connected to a mounting frame, the top of the mounting frame is fixedly connected to a hydraulic rod, the output end of the hydraulic rod passes through the mounting frame and is slidably connected thereto, the output end of the hydraulic rod is fixedly connected to a fixing frame, and the end of the fixing frame is fixedly connected to the first air duct.

[0010] As a preferred solution of the cushion air permeability detection device for the production of child safety seats described in the present invention, wherein: the inner wall of the mounting hole is fixedly connected to a trawl net, the outer wall of the trawl net is fixedly connected to a second slider, the bottom of the trawl net is fixedly connected to a connecting pipe, and the bottom of the connecting pipe is fixedly connected to an air guide cover.

[0011] As a preferred solution of the cushion permeability detection device for producing child safety seats described in the present invention, the first bracket outer wall is fixedly connected to a first pressure sensor, the connecting tube inner wall is fixedly connected to a second bracket, and the second bracket outer wall is fixedly connected to a second pressure sensor.

[0012] As a preferred solution of the cushion air permeability detection device for producing child safety seats of the present invention, a rubber pad is fixedly connected to the bottom of the third air duct, and the rubber pad is located between the third air duct and the trawl.

[0013] As a preferred solution of the cushion permeability detection device for the production of child safety seats described in the present invention, wherein: the outer wall of the air guide cover is fixedly connected to a tray, the bottom of the tray is fixedly connected to a pillar, the bottom of the pillar is fixedly connected to the mounting frame, the top of the tray is fixedly connected to two guide rods, the ends of the guide rods are fixedly connected to end blocks, the ends of the guide rods pass through the second slider and are fixedly connected thereto, and the ends of the guide rods pass through the first slider and are slidably connected thereto.

[0014] As a preferred solution of the cushion air permeability detection device for the production of child safety seats described in the present invention, the bottom of the air guide cover is fixedly connected to an exhaust duct, the outer wall of the exhaust duct is fixedly connected to an air flow sensor, and the end of the exhaust duct is fixedly connected to an exhaust fan.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The hydraulic rod pushes the fixed frame to move, and the fixed frame drives the first air duct to move. The first air duct drives the first slider to slide along the guide rod and pushes the second air duct to move at the same time. The second air duct drives the connecting ear to move. Under the elastic force of the spring, the third air duct is pushed downward by the support block. The bottom of the rubber pad at the bottom of the third air duct contacts the top of the operating table for sealing to ensure the accuracy of the detection process. The first air duct drives the pressure net to move downward to squeeze the top of the cushion, thereby simulating the size of the internal gap of the cushion when it is under pressure. This simulation method is closer to actual usage and helps to evaluate the performance of the cushion.

[0017] 2. Use the elastic force of the spring to push the third air duct downward through the support block, and ensure that the rubber pad at the bottom is in close contact with the operating table to achieve sealing. This design can reduce air leakage during the detection process and improve the accuracy of the detection.

[0018] 3. The exhaust fan generates suction, so that the external air passes through the top of the first air duct, through the pressure net, the second air duct, the third air duct drag net, the connecting pipe, the wind guide cover, the exhaust duct, and then enters the exhaust fan and is discharged. The first pressure sensor and the second pressure sensor are installed on the upper and lower sides of the cushion, which can accurately reflect the pressure difference on both sides of the cushion and measure the pressure difference caused by the airflow on both sides of the cushion. The airflow sensor is installed on the exhaust duct and can accurately measure the airflow velocity through the cushion. By measuring the pressure difference and airflow velocity, the air permeability of the cushion under pressure can be reflected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation structure of the push plate of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the operating table of the present invention;

[0023] Figure 4 It is a schematic diagram of the local structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation structure of the press screen of the present invention;

[0025] Figure 6 It is a schematic diagram of the installation structure of the exhaust duct of the present invention.

[0026] Explanation of the numbers in the figure: 1. operating table; 2. connecting groove; 3. docking groove; 4. mounting hole; 5. first conveyor; 6. second conveyor; 7. linear guide; 8. push plate; 801, limit plate; 9. mounting frame; 10. hydraulic rod; 11. fixing frame; 12. first air duct; 13. first bracket; 14. first pressure sensor; 15. pressing net; 16. second air duct; 17. connecting ear; 18. sliding rod; 19. spring; 20. third air duct; 21. supporting block; 22. rubber pad; 23. first slider; 24. guide rod; 25. end block; 26. trawl; 27. second slider; 28. connecting pipe; 29. ​​second bracket; 30. second pressure sensor; 31. air guide cover; 32. tray; 33. pillar; 34. exhaust duct; 35. air flow sensor; 36. exhaust fan. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation mode of the present application clearer, the technical solution in the implementation mode of the present application will be clearly and completely described in combination with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. The specific implementation modes of the present invention are described in detail in combination with the drawings in the specification.

[0028] like Figure 1-Figure 6 As shown, a cushion air permeability detection device for producing child safety seats includes an operating table 1, a first air duct 12 and a trawl net 26, wherein the inner wall of the first air duct 12 is fixedly connected to a first bracket 13, the inner wall of the first air duct 12 is fixedly connected to a pressing net 15, the trawl net 26 is located directly below the pressing net 15, the outer wall of the first air duct 12 is sleeved with a second air duct 16, the outer wall of the second air duct 16 is fixedly connected to two connecting ears 17, the outer wall of the second air duct 16 is sleeved with a third air duct 20, the outer wall of the third air duct 20 is fixedly connected to two supporting blocks 21, the top of the supporting block 21 is fixedly connected to a sliding rod 18, the outer wall of the sliding rod 18 is sleeved with a spring 19, the top of the sliding rod 18 passes through the connecting ear 17 and is slidably connected thereto, and the outer wall of the first air duct 12 is fixedly connected to a first slider 23; the pressing net 15 and the trawl net 26 squeeze the cushion, which can simulate the size of the internal gap of the cushion under pressure. This simulation method is closer to actual use and helps to evaluate the performance of the cushion.

[0029] The outer wall of the operating table 1 is provided with a connecting groove 2, a docking groove 3, and a mounting hole 4. The inner wall of the connecting groove 2 is fixedly provided with a second conveyor 6, and the inner wall of the docking groove 3 is fixedly provided with a first conveyor 5, which can be conveyed by cushions.

[0030] A linear guide rail 7 is fixedly installed on the outer wall of the operating table 1, a push plate 8 is fixedly connected to the top of the sliding part of the linear guide rail 7, and two limit plates 801 are fixedly connected to the outer wall of the push plate 8, and the limit plates 801 are used to limit the cushion.

[0031] The outer wall of the operating table 1 is fixedly connected to a mounting frame 9, the top of the mounting frame 9 is fixedly connected to a hydraulic rod 10, the output end of the hydraulic rod 10 passes through the mounting frame 9 and is slidably connected thereto, the output end of the hydraulic rod 10 is fixedly connected to a fixing frame 11, and the end of the fixing frame 11 is fixedly connected to a first air duct 12; through the hydraulic rod 10, linear guide rails 7, conveyors and other automated components, automatic transportation, positioning and detection of the cushion are realized, thereby improving the detection efficiency and the degree of automation of the production line.

[0032] A trawl net 26 is fixedly connected to the inner wall of the mounting hole 4 , a second slider 27 is fixedly connected to the outer wall of the trawl net 26 , a connecting pipe 28 is fixedly connected to the bottom of the trawl net 26 , and an air guide cover 31 is fixedly connected to the bottom of the connecting pipe 28 .

[0033] The first pressure sensor 14 is fixedly connected to the outer wall of the first bracket 13, the second bracket 29 is fixedly connected to the inner wall of the connecting pipe 28, and the second pressure sensor 30 is fixedly connected to the outer wall of the second bracket 29; the first pressure sensor 14 and the second pressure sensor 30 can monitor the air pressure changes inside the cushion in real time, so as to accurately evaluate the air permeability of the cushion. The rubber pad 22 is fixedly connected to the bottom of the third air duct 20, and the rubber pad 22 is located between the third air duct 20 and the trawl 26.

[0034] A tray 32 is fixedly connected to the outer wall of the air guide cover 31, a pillar 33 is fixedly connected to the bottom of the tray 32, the bottom of the pillar 33 is fixedly connected to the mounting frame 9, and two guide rods 24 are fixedly connected to the top of the tray 32. The ends of the guide rods 24 are fixedly connected to end blocks 25. The ends of the guide rods 24 pass through the second slider 27 and are fixedly connected thereto, and the ends of the guide rods 24 pass through the first slider 23 and are slidably connected thereto. The design of the guide rods 24, the end blocks 25, the sliding rods 18, etc. ensures the stability and accuracy of each component during movement, and avoids detection errors caused by shaking or misalignment.

[0035] An exhaust duct 34 is fixedly connected to the bottom of the air guide cover 31, an airflow sensor 35 is fixedly connected to the outer wall of the exhaust duct 34, and an exhaust fan 36 is fixedly connected to the end of the exhaust duct 34; the airflow sensor 35 can measure the airflow passing through the cushion to further verify the breathability.

[0036] Working principle: The first conveyor 5 conveys the child cushion, the linear guide rail 7 drives the push plate 8 to move, the push plate 8 drives the two limit plates 801 to move, the cushion is conveyed through the limit plates 801, and the cushion is limited at the same time, so that the cushion is accurately conveyed to the top of the trawl net 26, and the linear guide rail 7 drives the push plate 8 to move in the opposite direction and move away from under the pressure net 15;

[0037] The hydraulic rod 10 pushes the fixing frame 11 to move, the fixing frame 11 drives the first air duct 12 to move, the first air duct 12 drives the first slider 23 to slide along the guide rod 24, and at the same time pushes the second air duct 16 to move, the second air duct 16 drives the connecting ear 17 to move, and under the elastic force of the spring 19, the third air duct 20 is pushed downward by the support block 21, and the bottom of the rubber pad 22 at the bottom of the third air duct 20 contacts the top of the operating table 1 to seal, ensuring the accuracy of the detection process, and the first air duct 12 drives the pressing net 15 to move downward to squeeze the top of the cushion, thereby simulating the size of the internal gap of the cushion under pressure;

[0038] The exhaust fan 36 generates suction force, so that the external air passes through the top of the first air duct 12, through the pressure net 15, the second air duct 16, the third air duct 20, the drag net 26, the connecting pipe 28, the air guide cover 31, the exhaust pipe 34, and then enters the exhaust fan 36 and is discharged;

[0039] The first pressure sensor 14 and the second pressure sensor 30 are installed at the upper and lower sides of the cushion, which can accurately reflect the pressure difference between the two sides of the cushion and measure the pressure difference between the two sides of the cushion caused by the airflow passing through;

[0040] The air flow sensor 35 is mounted on the exhaust pipe 34 and can accurately measure the air flow velocity through the cushion;

[0041] By measuring the pressure difference and airflow velocity, the breathability of the cushion under pressure can be reflected;

[0042] After the detection, the hydraulic rod 10 drives the first air duct 12 to move upward, and the linear guide rail 7 pushes the cushion to move again, so that the cushion moves to the second conveyor 6, and the cushion is transported to the next process by the second conveyor 6.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cushion air permeability detection device for producing a child safety seat, comprising a first air duct (12) and a trawl net (26), characterized in that: The first air duct (12) is fixedly connected to the inner wall with a first bracket (13), the inner wall of the first air duct (12) is fixedly connected to a pressure net (15), the trawl net (26) is located directly below the pressure net (15), the outer wall of the first air duct (12) is sleeved with a second air duct (16), the outer wall of the second air duct (16) is fixedly connected to two connecting ears (17), the outer wall of the second air duct (16) is sleeved with a third air duct (20), the outer wall of the third air duct (20) is fixedly connected to two supporting blocks (21), the top of the supporting block (21) is fixedly connected to a sliding rod (18), the outer wall of the sliding rod (18) is sleeved with a spring (19), the top of the sliding rod (18) passes through the connecting ear (17) and is slidably connected thereto, and the outer wall of the first air duct (12) is fixedly connected to a first sliding block (23).

2. The cushion air permeability detection device for child safety seat production according to claim 1, characterized in that: It also comprises an operating table (1), wherein the outer wall of the operating table (1) is provided with a connection groove (2), the outer wall of the operating table (1) is provided with a docking groove (3), and the top of the operating table (1) is provided with a mounting hole (4).

3. The cushion air permeability detection device for child safety seat production according to claim 2, characterized in that: A second conveyor (6) is fixedly mounted on the inner wall of the connecting groove (2), and a first conveyor (5) is fixedly mounted on the inner wall of the docking groove (3).

4. The cushion air permeability detection device for child safety seat production according to claim 3, characterized in that: A linear guide rail (7) is fixedly installed on the outer wall of the operating table (1); a push plate (8) is fixedly connected to the top of the sliding part of the linear guide rail (7); two limit plates (801) are fixedly connected to the outer wall of the push plate (8); and the limit plates (801) are used to limit the cushion.

5. The cushion air permeability detection device for child safety seat production according to claim 4, characterized in that: The outer wall of the operating table (1) is fixedly connected to a mounting frame (9), the top of the mounting frame (9) is fixedly connected to a hydraulic rod (10), the output end of the hydraulic rod (10) passes through the mounting frame (9) and is slidably connected thereto, the output end of the hydraulic rod (10) is fixedly connected to a fixing frame (11), and the end of the fixing frame (11) is fixedly connected to a first air duct (12).

6. The cushion air permeability detection device for child safety seat production according to claim 5, characterized in that: A trawl net (26) is fixedly connected to the inner wall of the mounting hole (4), a second slider (27) is fixedly connected to the outer wall of the trawl net (26), a connecting pipe (28) is fixedly connected to the bottom of the trawl net (26), and an air guide cover (31) is fixedly connected to the bottom of the connecting pipe (28).

7. The cushion air permeability detection device for child safety seat production according to claim 6, characterized in that: A first pressure sensor (14) is fixedly connected to the outer wall of the first bracket (13), a second bracket (29) is fixedly connected to the inner wall of the connecting pipe (28), and a second pressure sensor (30) is fixedly connected to the outer wall of the second bracket (29).

8. The cushion air permeability detection device for child safety seat production according to claim 7, characterized in that: A rubber pad (22) is fixedly connected to the bottom of the third air duct (20), and the rubber pad (22) is located between the third air duct (20) and the trawl net (26).

9. The cushion air permeability detection device for child safety seat production according to claim 8, characterized in that: The outer wall of the air guide cover (31) is fixedly connected to a tray (32), the bottom of the tray (32) is fixedly connected to a pillar (33), the bottom of the pillar (33) is fixedly connected to a mounting frame (9), the top of the tray (32) is fixedly connected to two guide rods (24), the ends of the guide rods (24) are fixedly connected to end blocks (25), the ends of the guide rods (24) pass through the second slider (27) and are fixedly connected thereto, and the ends of the guide rods (24) pass through the first slider (23) and are slidably connected thereto.

10. The cushion air permeability detection device for child safety seat production according to claim 9, characterized in that: An exhaust pipe (34) is fixedly connected to the bottom of the air guide cover (31), an air flow sensor (35) is fixedly connected to the outer wall of the exhaust pipe (34), and an exhaust fan (36) is fixedly connected to the end of the exhaust pipe (34).

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