A testing device for the firmness of a folding sofa bed

Abstract

This invention discloses a testing device for the firmness of a folding sofa bed. The device includes a testing platform with a connecting frame fixedly connected to it. A foot simulation block is positioned at the bottom of the testing platform. An external moving mechanism is connected to the connecting frame and used to move the foot simulation block into contact with the folding sofa bed. A data acquisition unit on the testing platform collects the firmness data of the foot simulation block in contact with the folding sofa bed. This invention utilizes a foot simulation block to test the firmness of the folding sofa bed. During testing, the foot simulation block can be moved to any position on the folding sofa bed, more closely resembling the firmness data obtained when the user is using it. Furthermore, the collected data more closely matches the actual experience of consumers, thus obtaining pressure data that closely matches the consumer's usage scenario.

Description

Technical Field

[0001] This invention relates to the field of folding sofa bed technology, and in particular to a testing device for the softness and hardness of folding sofa beds. Background Technology

[0002] Folding sofa beds can freely switch between sofa and bed modes, saving space and meeting the actual needs of modern young people. Folding sofa beds allow users to sit and rest, as well as lie down to sleep, so the comfort of folding sofa beds is particularly important.

[0003] However, existing technologies for testing the comfort of folding sofa beds typically involve taking multiple samples from the sofa or mattress using a fixed-size pressure plate and collecting hardness data to determine the firmness of the sofa or mattress. This method differs significantly from actual user experience and makes it difficult to provide data that consumers can use for reference.

[0004] Therefore, there is an urgent need for a testing device for the firmness of folding sofa beds to solve the technical problem that existing testing devices do not collect accurate data on firmness, making it difficult for consumers to refer to the data. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for the firmness of a folding sofa bed, in order to solve the technical problem that existing testing devices do not collect accurate data on the firmness of the sofa bed, making it difficult for consumers to refer to the data.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing device for the softness and hardness of a folding sofa bed includes a testing platform, a connecting frame fixedly connected to the testing platform, a foot simulation block disposed at the bottom of the testing platform, an external moving mechanism connected to the connecting frame and used to drive the foot simulation block to contact the folding sofa bed, and a data acquisition unit on the testing platform acquiring softness and hardness data of the foot simulation block contacting the folding sofa bed.

[0008] Preferably, the testing equipment for the firmness of the folding sofa bed further includes a deflection mechanism and a deflection storage plate. The testing platform is rotatably connected to the deflection storage plate through the deflection mechanism. The deflection storage plate is provided with a hip simulation block. The deflection storage plate has a storage groove. A telescopic plate is provided inside the storage groove. The telescopic plate is provided with a leg simulation block.

[0009] Preferably, the deflection mechanism includes a convex moving block, a limiting rod, an adjusting screw, a rotating shaft, a gear rod, and a torsion spring. The limiting rod is movably inserted into one end of the convex moving block, and the adjusting screw is threadedly connected to the other end of the convex moving block. A knob is provided at the end of the adjusting screw. The torsion spring is provided at both ends of the rotating shaft. A bearing moving plate is provided on both sides of the convex moving block. The bearing moving plate is rotatably inserted into the gear rod. First teeth are provided on both sides of the convex moving block, and the first teeth match the gear rod. The rotating shaft is provided with second teeth that mesh with the gear rod.

[0010] Preferably, the bottom of the deflection receiving plate is fixedly connected to the top of the rotating shaft, and a first spring is provided between the bottom of the bearing moving plate and the test platform. When the adjusting screw drives the convex moving block to move down until the first tooth meshes with the gear rod, the gear rod drives the rotating shaft to deflect to be parallel to the upper surface of the test platform, and the torsion spring constantly provides the elastic force for the rotating shaft to return to its original position.

[0011] Preferably, both ends of the bearing movable plate are provided with limit sliders, and the test platform is provided with a limit groove that matches the limit sliders. The rotating shaft is connected to the bearing movable plate. When the limit slider drives the deflection storage plate to move down to the first position, the buttock simulation block contacts the folding sofa bed, and the acquisition unit on the test platform acquires the softness and hardness data of the buttock simulation block contacting the folding sofa bed.

[0012] Preferably, the testing equipment for the firmness of the folding sofa bed further includes an extension mechanism, which includes a fixed box and a round rod. The fixed box is fixedly connected to a load-bearing movable plate and the round rod. The round rod is provided with a driving block, which is fixedly connected to a telescopic plate. The driving block can rotate or slide relative to the round rod.

[0013] Preferably, the testing device for the firmness of the folding sofa bed further includes a telescopic rod, which is disposed between the telescopic plate and the leg simulation block. The telescopic rod can adjust the distance between the telescopic plate and the leg simulation block so that the leg simulation block abuts against the folding sofa bed.

[0014] Preferably, the testing device for the firmness of the folding sofa bed further includes a limiting mechanism, which includes an insertion slot. A limiting block is movably inserted into the insertion slot. A second spring is fixedly connected to one end of the limiting block. One end of the second spring is fixedly connected to the inner wall of the insertion slot. When the deflecting storage plate is not flipped, the deflecting storage plate abuts against the limiting mechanism.

[0015] Preferably, the foot simulation block, buttock simulation block, and leg simulation block are all made of soft silicone, and the bottom curvature of the foot simulation block, buttock simulation block, and leg simulation block is similar to that of the human body.

[0016] Preferably, the surface of the knob is provided with an anti-slip layer.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This invention provides a testing device for the firmness of a folding sofa bed. The device includes a testing platform, a connecting frame, and a foot simulation block. The connecting frame is fixedly connected to the testing platform, and the foot simulation block is positioned at the bottom of the platform. An external moving mechanism is connected to the connecting frame, causing the foot simulation block to contact the folding sofa bed. A data acquisition unit on the testing platform collects the firmness data of the foot simulation block in contact with the sofa bed. This invention utilizes a foot simulation block to test the firmness of the folding sofa bed. During testing, the foot simulation block can be moved to any position on the sofa bed, more closely resembling the firmness data obtained during user use. Furthermore, the collected data better reflects the actual experience of consumers, thus providing pressure data that closely matches the consumer's usage scenario. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the testing device for the softness and hardness of the folding sofa bed of the present invention;

[0020] Figure 2 This is a cross-sectional view of the testing equipment for the softness and hardness of the folding sofa bed according to the present invention;

[0021] Figure 3 This is another cross-sectional view of the testing device for the softness and hardness of the folding sofa bed of the present invention.

[0022] Illustration: Test stand 1, connecting frame 2, foot simulation block 3, deflection storage plate 4, buttock simulation block 5, storage slot 6, telescopic plate 7, leg simulation block 8, convex moving block 9, limit rod 10, adjusting screw 11, knob 12, first spring 13, rotating shaft 14, torsion spring 15, gear rod 16, insertion slot 17, limit block 18, second spring 19, fixed box 20, round rod 21, driving block 22, limit slider 23, limit slide groove 24, bearing moving plate 25. Detailed Implementation

[0023] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Please see Figure 1 As shown, the testing equipment for the softness and hardness of the folding sofa bed in this embodiment includes a test platform 1, a connecting frame 2 fixedly connected to the test platform 1, a foot simulation block 3 set at the bottom of the test platform 1, an external moving mechanism connected to the connecting frame 2, and used to drive the foot simulation block 3 to contact the folding sofa bed, and the acquisition unit on the test platform 1 acquires the softness and hardness data of the foot simulation block 3 contacting the folding sofa bed.

[0026] It should be noted that the connecting frame 2 of the present invention is located on the top of the test platform 1. When testing the softness and hardness of the folding sofa bed, the external moving mechanism drives the test platform 1 to move until the foot simulation block 3 contacts the folding sofa bed through the connecting frame 2. The foot simulation block 3 simulates a user standing on the surface of the folding sofa bed. At this time, the data acquisition unit on the test platform 1 is used to collect the softness and hardness data of the foot simulation block 3 contacting the folding sofa bed. Using this method to detect the softness and hardness of the folding sofa bed is more in line with the actual experience of consumers, and the collected data is more accurate and has better reference value.

[0027] For details, please refer to Figure 2 As shown, the testing equipment for the softness and hardness of the folding sofa bed also includes a deflection mechanism and a deflection storage plate 4. The test platform 1 is rotatably connected to the deflection storage plate 4 through the deflection mechanism. The deflection storage plate 4 is provided with a hip simulation block 5 and a storage groove 6. The storage groove 6 is provided with a telescopic plate 7 and a leg simulation block 8.

[0028] For details, please refer to Figure 3 As shown, the deflection mechanism includes a convex moving block 9, a limiting rod 10, an adjusting screw 11, a rotating shaft 14, a gear rod 16, and a torsion spring 15. The limiting rod 10 is movably inserted into one end of the convex moving block 9, and the adjusting screw 11 is threadedly connected to the other end of the convex moving block 9. A knob 12 is provided at the end of the adjusting screw 11. Torsion springs 15 are provided at both ends of the rotating shaft 14. A bearing moving plate 25 is provided on both sides of the convex moving block 9. The bearing moving plate 25 is rotatably inserted into the gear rod 16. First teeth are provided on both sides of the convex moving block 9, and the first teeth match the gear rod 16. The rotating shaft 14 is provided with second teeth that mesh with the gear rod 16.

[0029] Specifically, the bottom of the deflection storage plate 4 is fixedly connected to the top of the rotating shaft 14, and a first spring 13 is provided between the bottom of the bearing moving plate 25 and the test platform 1. When the adjusting screw 11 drives the convex moving block 9 to move down until the first tooth meshes with the gear rod 16, the gear rod 16 drives the rotating shaft 14 to deflect to be parallel to the upper surface of the test platform 1. The torsion spring 15 constantly provides the elastic force for the rotating shaft 14 to return to its original position.

[0030] Specifically, the testing equipment for the softness and hardness of the folding sofa bed also includes a limiting mechanism. The limiting mechanism includes a plug groove 17, in which a limiting block 18 is movably plugged in. One end of the limiting block 18 is fixedly connected to a second spring 19, and one end of the second spring 19 is fixedly connected to the inner wall of the plug groove 17. When the deflecting storage plate 4 is not flipped, the deflecting storage plate 4 abuts against the limiting mechanism.

[0031] It should be noted that when the deflection storage plate 4 needs to be rotated, the rotating knob 12 drives the convex moving block 9 to move. During the downward movement of the convex moving block 9, its tooth surface meshes with the gear rod 16. The gear rod 16 rotates, which drives the rotating shaft 14 to deflect. During the deflection, the second spring 19, which is in a compressed state, gradually extends and pushes out the limiting block 18. When the deflection reaches 90 degrees, it loses the obstruction of the deflection storage plate 4. The second spring 19, which is in a compressed state, resets and pushes out the limiting block 18. The limiting block 18 is simultaneously above the bearing moving plate 25 and the deflection storage plate 4. The limiting block 18 prevents the bearing moving plate 25 from deflecting upward. The two ends of the torsion spring 15 are fixedly connected to the bearing moving plate 25 and the rotating shaft 14, respectively. When the rotating shaft 14 rotates, the torsion spring 15 rotates with it. When the limiting block 18 enters the insertion slot 17, the torsion spring 15 causes the deflection storage plate 4 to deflect to a state perpendicular to the bearing moving plate 25.

[0032] Specifically, both ends of the supporting moving plate 25 are provided with limiting sliders 23, and the test platform 1 has a matching limiting groove 24. The rotating shaft 14 is connected to the supporting moving plate 25. When the limiting sliders 23 drive the deflection storage plate 4 to move down to the first position, the buttock simulation block 5 contacts the folding sofa bed. The acquisition unit on the test platform 1 collects the softness and hardness data of the buttock simulation block 5 contacting the folding sofa bed. The thickness of the buttock simulation block 5 of this invention is greater than the sum of the thickness of the bottom of the test platform 1 and the thickness of the foot simulation block 3. The first position is the lowest point of the limiting groove 24. When the deflection storage plate 4 moves down to the first position, the deflection storage plate 4 is parallel to the supporting moving plate 25. At this time, the buttock simulation block 5 contacts the folding sofa bed, and the acquisition unit on the test platform 1 collects the softness and hardness data of the buttock simulation block 5 contacting the folding sofa bed. The buttock simulation block 5 can simulate a user sitting on the surface of the folding sofa bed. Using this method to detect the softness and hardness of the folding sofa bed is more in line with the actual experience of consumers, and the collected data is more accurate and has better reference value.

[0033] Specifically, the testing equipment for the softness and hardness of the folding sofa bed also includes an extension mechanism, which includes a fixed box 20 and a round rod 21. The fixed box 20 is fixedly connected to the load-bearing moving plate 25 and the round rod 21. The round rod 21 is provided with a driving block 22, which is fixedly connected to the telescopic plate 7. The driving block 22 can rotate or slide relative to the round rod 21.

[0034] Specifically, the testing equipment for the softness and hardness of the folding sofa bed also includes a telescopic rod, which is located between the telescopic plate 7 and the leg simulation block 8. The telescopic rod can adjust the distance between the telescopic plate 7 and the leg simulation block 8 so that the leg simulation block 8 abuts against the folding sofa bed.

[0035] The width of the storage slot 6 in this invention is greater than the sum of the thickness 8 of the leg simulation block, the thickness of the telescopic plate 7, and the minimum length of the telescopic rod. When the storage plate 4 is deflected, the drive block 22 will rotate accordingly. In the first position, both the leg simulation block 8 and the hip simulation block 5 are in a horizontal state. At this time, if the leg simulation block 8 is to contact the folding sofa bed, it is only necessary to move the drive block 22 towards the opening of the storage slot 6. The drive block 22 can push the telescopic plate 7 out of the storage slot 6. Then, adjust the telescopic rod until the telescopic rod extends so that the leg simulation block 8 is lower than the hip simulation block 5. At this time, the leg simulation block 8 contacts the folding sofa bed. The acquisition unit on the test platform 1 collects the softness and hardness data of the leg simulation block 8 contacting the folding sofa bed. Of course, it should be noted that the acquisition unit of this invention collects load information and displacement information. Based on the load information and displacement information, the loading curve of the folding sofa bed is determined. Based on the loading curve, the average slope of the loading curve is determined. Based on the average slope and the loading curve, the hardness information of the folding sofa bed is determined. Based on the hardness information, the hardness level of the folding sofa bed is determined.

[0036] Specifically, in order to ensure that the test data is more meaningful, the foot simulation block 3, the buttock simulation block 5 and the leg simulation block 8 of the present invention are all made of soft silicone, and the bottom curvature of the foot simulation block 3, the buttock simulation block 5 and the leg simulation block 8 is similar to that of the human body.

[0037] Specifically, the surface of knob 12 is provided with an anti-slip layer.

[0038] Combination Figures 1-3 As can be seen, the testing device for the softness and hardness of the folding sofa bed provided by the present invention is equipped with multiple simulation blocks. These blocks simulate the pressure surface when standing or sitting in any position on the folding sofa bed. This testing method is more in line with the actual experience of consumers, and the obtained softness and hardness data is more consistent with the pressure data collected by consumers, thus having better reference value. In addition, this testing device is equipped with a deflection mechanism and an extension mechanism. These mechanisms reduce the overall size of the device and the space occupied, greatly enhancing the practicality of the testing device for the softness and hardness of the folding sofa bed.

[0039] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., 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 invention 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 invention.

[0040] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing device for the firmness of a folding sofa bed, characterized in that: The device includes a test platform, a connecting frame fixedly connected to the test platform, a foot simulation block set at the bottom of the test platform, an external moving mechanism connected to the connecting frame and used to drive the foot simulation block to contact the folding sofa bed, and a data acquisition unit on the test platform to collect the softness and hardness data of the foot simulation block contacting the folding sofa bed. It also includes a deflection mechanism and a deflection storage plate. The test platform is rotatably connected to the deflection storage plate through the deflection mechanism. The deflection storage plate is provided with a hip simulation block. The deflection storage plate has a storage slot. A telescopic plate is provided inside the storage slot. The telescopic plate is provided with a leg simulation block. The deflection mechanism includes a convex moving block, a limiting rod, an adjusting screw, a rotating shaft, a gear rod, and a torsion spring. The limiting rod is movably inserted into one end of the convex moving block, and the adjusting screw is threadedly connected to the other end of the convex moving block. A knob is provided at the end of the adjusting screw. The torsion springs are provided at both ends of the rotating shaft. A bearing moving plate is provided on both sides of the convex moving block, and the bearing moving plate is rotatably inserted into the gear rod. First teeth are provided on both sides of the convex moving block, and the first teeth match the gear rod. The rotating shaft is provided with second teeth that mesh with the gear rod.

2. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: The bottom of the deflection storage plate is fixedly connected to the top of the rotating shaft. A first spring is provided between the bottom of the bearing moving plate and the test platform. When the adjusting screw drives the convex moving block to move down until the first tooth meshes with the gear rod, the gear rod drives the rotating shaft to deflect to be parallel to the upper surface of the test platform. The torsion spring constantly provides the elastic force for the rotating shaft to return to its original position.

3. The testing equipment for the firmness of a folding sofa bed according to claim 2, characterized in that: Both ends of the bearing movable plate are provided with limit sliders, and the test platform is provided with a limit groove that matches the limit sliders. The rotating shaft is connected to the bearing movable plate. When the limit slider drives the deflection storage plate to move down to the first position, the buttock simulation block contacts the folding sofa bed. The acquisition unit on the test platform collects the softness and hardness data of the buttock simulation block contacting the folding sofa bed.

4. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: It also includes an extension mechanism, which includes a fixed box and a round rod. The fixed box is fixedly connected to the load-bearing movable plate and the round rod. The round rod is provided with a driving block. The driving block is fixedly connected to a telescopic plate. The driving block can rotate or slide relative to the round rod.

5. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: It also includes a telescopic rod, which is located between the telescopic plate and the leg simulation block. The telescopic rod can adjust the distance between the telescopic plate and the leg simulation block so that the leg simulation block abuts against the folding sofa bed.

6. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: It also includes a limiting mechanism, which includes a plug slot, in which a limiting block is movably inserted. One end of the limiting block is fixedly connected to a second spring, and one end of the second spring is fixedly connected to the inner wall of the plug slot. When the deflection storage plate is not flipped, the deflection storage plate abuts against the limiting mechanism.

7. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: The foot, buttock, and leg simulation blocks are all made of soft silicone, and the bottom curvature of the foot, buttock, and leg simulation blocks is similar to that of the human body.

8. The testing equipment for the firmness of a folding sofa bed according to claim 1, characterized in that: The knob surface is provided with an anti-slip layer.

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