Mattress compression permanent deformation testing device

Abstract

The utility model discloses a mattress compression permanent deformation testing device. The device comprises a supporting base; the fixing plate is arranged above the supporting base, the top of the fixing plate is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a testing pressing plate, an arc-shaped model is rotationally arranged in the middle of the testing pressing plate, the top of the arc-shaped model is of a plane structure, and the arc-shaped model is used for simulating the sleeping posture of a human body to measure pressure; the beneficial effects of the utility model are that the design of the arc-shaped model can simulate the curve of the back of a human body and provide more real mattress pressure distribution simulation, so that the test is closer to the actual sleep state; the state of the arc-shaped model can be adjusted through the driving motor, switching from a plane to an arc surface can be achieved, the performance of the mattress in different pressure states can be simulated, the curve of the back of a human body can be simulated through the design of the arc-shaped model, more real mattress pressure distribution simulation is provided, the test is closer to the actual sleep state, and the test flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mattress deformation testing, in particular to a mattress compression permanent deformation testing device. Background Art

[0002] The mattress compression permanent deformation test device is a device used to evaluate the permanent deformation of a mattress after long-term use. During the test, the deformation of the mattress after compression can be recorded, and pressure is applied for a period of time to simulate actual use. Once the test is over, it can be observed whether the mattress returns to its original shape after the pressure is released, and whether permanent deformation has occurred. This test device can be used to evaluate the resilience and permanent deformation of the mattress, providing a reference and improvement direction for the design and manufacture of mattresses.

[0003] Most existing testing devices simply press the sample for a certain period of time and then measure the recovery of the mattress. In addition, during the pressing process, the compression deformation test is mostly performed through a horizontal pressing plate, which cannot simulate the curve of the human back and cannot provide a more realistic simulation of the mattress pressure distribution, making the test unable to be closer to the actual sleeping state. In addition, most of the testing equipment is open and the test temperature cannot be adjusted. Utility Model Content

[0004] The utility model aims to provide a mattress compression permanent deformation testing device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a mattress compression permanent deformation testing device, comprising:

[0006] Support base;

[0007] A fixed plate, the fixed plate is placed above the support base, the top of the fixed plate is fixedly connected to a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected to a test pressure plate, the middle part of the test pressure plate is rotatably provided with an arc model, the top of the arc model is a plane structure, and is used to simulate the sleeping position of the human body for pressure measurement;

[0008] The ventilation pipe is symmetrically fixed to the middle of the fixed plate, and a heating wire is provided inside the fixed plate for increasing the test temperature;

[0009] A transparent sealing cover can be lifted and lowered and is placed on the outer side of the fixing plate.

[0010] Preferably, a limit rod is slidably connected to the middle of the support base, a test placement plate is fixedly connected to the top of the limit rod, and a pressure sensor is fixedly connected between the support base and the test placement plate.

[0011] Preferably, four corners of the top of the support base are fixedly connected with lifting columns, the top of the lifting columns is fixedly connected with a top plate, and the fixed plate is slidably connected to the lifting columns.

[0012] Preferably, a fan is installed on the top of each ventilation duct.

[0013] Preferably, the top of the test platen is fixedly connected to a limiting lifting rod, the limiting lifting rod is slidably connected to the fixed plate, the outer side of the limiting lifting rod is fixedly connected to the limiting plate, and the outer side of the limiting lifting rod and below the limiting plate is slidably connected to a connecting rod.

[0014] Preferably, a return spring is installed between the connecting rod and the limiting plate, and the inner wall of the transparent sealing cover is fixedly connected to the connecting rod.

[0015] Preferably, a hole matching the arc model is opened in the middle of the fixing plate, a driving motor is fixedly connected to one end of the fixing plate, and an output end of the driving motor is fixedly connected to the arc model.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the design of the arc model can simulate the curve of the human back, provide a more realistic simulation of the mattress pressure distribution, and make the test closer to the actual sleeping state; the state of the arc model can be adjusted by driving the motor, and the switch from the flat surface to the arc surface can simulate the performance of the mattress under different pressure states. The design of the arc model can simulate the curve of the human back, provide a more realistic simulation of the mattress pressure distribution, and make the test closer to the actual sleeping state, increasing the flexibility of the test; the combination of the hydraulic cylinder and the test platen can provide precise pressure control to ensure accurate pressing of the sample mattress, so as to obtain reliable test results; the transparent sealing cover forms a closed space after contacting the support base, simulating the mattress performance under different temperature conditions, and more comprehensively evaluating the performance of the mattress. The test environment can be controlled, including ventilation and temperature, to ensure the stability and repeatability of the test environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the fan of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the arc-shaped model of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connecting rod of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the utility model during testing;

[0022] Figure 6 It is an enlarged view of point A of the present utility model.

[0023] In the figure: 1. Support base; 2. Lifting column; 3. Fixed plate; 4. Top plate; 5. Ventilation duct; 6. Fan; 7. Heating wire; 8. Limit lifting rod; 9. Reset spring; 10. Connecting rod; 11. Test pressure plate; 12. Transparent sealing cover; 13. Hydraulic cylinder; 14. Test placement plate; 15. Pressure sensor; 16. Limit rod; 17. Arc model; 18. Drive motor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , 2 As shown in Figures 3, 4, 5 and 6, the utility model provides a technical solution: a mattress compression permanent deformation test device, comprising: a support base 1; a fixed plate 3 can be raised and lowered and slidably arranged above the support base 1, the top of the fixed plate 3 is fixedly connected with a hydraulic cylinder 13, the output end of the hydraulic cylinder 13 is fixedly connected with a test platen 11, the middle part of the test platen 11 is rotatably provided with an arc model 17, the top of the arc model 17 is a plane structure, the bottom of the arc model 17 is a curved surface with the same line as the human back support base 1, and is used to simulate the sleeping position of the human body for pressure measurement; the ventilation pipe 5 is symmetrically fixed to the middle part of the fixed plate 3, and the interior of the fixed plate 3 is provided with an electric heating wire 7 for increasing the test temperature; the transparent sealing cover 12 can be raised and lowered and placed on the outside of the fixed plate 3, and a thermometer is installed on the outside of the transparent sealing cover.

[0026] It should be noted that the utility model places the sample on the top of the test placement plate, and then measures the thickness of the sample mattress before the experiment, drives the arc model 17 to flip through the driving motor 18, and switches the plane and the arc surface of the arc model 17 as needed to simulate the two states of human body and flat plate compression, and then drives the test platen 11 to descend through the hydraulic cylinder 13, and the test platen 11 drives the transparent sealing cover 12 to move downward through the connecting rod 10. When the transparent sealing cover 12 contacts and cooperates with the support base 1, the support base 1, the fixing plate 3 and the transparent sealing cover 12 form a closed experimental space. When the test platen 11 continues to move downward, the transparent sealing cover 12 contacts and fixes the support base 1, and the limit lifting rod 8 continues to move downward to compress the reset spring 9. The test platen 11 presses the sample, and the fan 6 and the heating wire 7 adjust the internal temperature to simulate the test environment with different temperatures. After a period of time, the test recovers. The design of the arc model 17 can simulate the curve of the human back, provide a more realistic simulation of the pressure distribution of the mattress, and make the test closer to the actual sleeping state; the state of the arc model 17 can be adjusted by driving the motor 18, and the switch from the flat surface to the arc surface can simulate the performance of the mattress under different pressure states. The design of the arc model 17 can simulate the curve of the human back, provide a more realistic simulation of the pressure distribution of the mattress, and make the test closer to the actual sleeping state, which increases the flexibility of the test; the hydraulic cylinder 13 and the test platen 11 are used in combination to provide precise pressure control to ensure accurate pressing of the sample mattress, so as to obtain reliable test results; the transparent sealing cover 12 forms a closed space after contacting the support base 1, simulating the performance of the mattress under different temperature conditions, and more comprehensively evaluating the performance of the mattress. The test environment, including ventilation and temperature, can be controlled to ensure the stability and repeatability of the test environment.

[0027] See also Figure 1 , 2 As shown in , 3 and 5, the middle part of the support base 1 is slidably connected with a limit rod 16, the top of the limit rod 16 is fixedly connected with a test placement plate 14, a pressure sensor 15 is fixedly connected between the support base 1 and the test placement plate 14, the four corners of the top of the support base 1 are fixedly connected with a lifting column 2, the top of the lifting column 2 is fixedly connected with a top plate 4, and the fixed plate 3 is slidably connected with the lifting column 2.

[0028] It should be noted that the utility model is provided with a controller, and the pressure sensor 15 is located between the support base 1 and the test placement plate 14, which is used to monitor the pressure changes during the test process, so as to obtain the deformation of the mattress in real time. The top plate 4 is used to ensure that it is firmly fixed above the lifting column 2, so as to maintain the structural stability of the entire testing device. The sliding connection between the fixing plate 3 and the lifting column 2 can provide a more flexible height adjustment function to adapt to the testing of mattresses of different heights or sizes.

[0029] See also Figure 2 , 5 As shown, a fan 6 is installed on the top of the ventilation pipe 5.

[0030] It should be noted that the fan 6 of the utility model can flow air through the ventilation pipe 5, thereby adjusting the temperature and humidity of the mattress surface and maintaining the stability of the test environment; and the internal heating wire can provide additional heat to help adjust the temperature of the test environment, ensuring that various environments for mattress use can be accurately simulated under different temperature conditions, thereby effectively improving the controllability of the test environment and making the mattress test results more accurate and reliable.

[0031] See also Figure 2 , 4 As shown in , 6, the top of the test platen 11 is fixedly connected to the limit lifting rod 8, the limit lifting rod 8 is slidably connected to the fixed plate 3, the outer side of the limit lifting rod 8 is fixedly connected to the limit plate, the outer side of the limit lifting rod 8 and located below the limit plate is slidably connected with a connecting rod 10, a reset spring 9 is installed between the connecting rod 10 and the limit plate, and the inner wall of the transparent sealing cover 12 is fixedly connected to the connecting rod 10.

[0032] It should be noted that the fixed plate 3 of the utility model can serve as a guide for the limit lifting rod 8 to ensure its stable movement in the vertical direction. A connecting rod 10 is slidably connected to the outside of the limit lifting rod 8 and located below the limit plate. A reset spring 9 is installed between the connecting rod 10 and the limit plate. The transparent sealing cover 12 is in contact with the support base 1 and is fixed. The limit lifting rod 8 continues to move downward to compress the reset spring 9, so that it can not affect the normal pressure test of the test plate 11 during the sealing process.

[0033] See also Figure 1 , 5 As shown in FIG. 3 , a hole matching with the arc-shaped model 17 is opened in the middle of the fixing plate 3 , a driving motor 18 is fixedly connected to one end of the fixing plate 3 , and an output end of the driving motor 18 is fixedly connected to the arc-shaped model 17 .

[0034] It should be noted that the utility model drives the arc model 17 to flip through the driving motor 18, so as to realize the switching between the flat state and the arc state; in the flat state, the mattress can obtain uniform pressure distribution, simulating the test situation; while in the arc state, the mattress will be subjected to more local pressure, simulating the curve and deformation of the human body when compressed; the switching can make the test more realistic and comprehensive, and better simulate the performance of the mattress under different usage conditions, and by simulating the switching between the human body and the flat compression state, the support, comfort and durability of the mattress under different conditions can be evaluated.

[0035] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0037] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mattress compression permanent deformation testing device, characterized in that: include: Support base (1); A fixed plate (3), the fixed plate (3) is placed above the support base (1), the top of the fixed plate (3) is fixedly connected to a hydraulic cylinder (13), the output end of the hydraulic cylinder (13) is fixedly connected to a test pressure plate (11), the middle of the test pressure plate (11) is rotatably provided with an arc model (17), the top of the arc model (17) is a plane structure, and is used to simulate the sleeping posture of a human body to measure pressure; A ventilation pipe (5), the ventilation pipe (5) is symmetrically fixed to the middle part of the fixing plate (3), and a heating wire (7) for increasing the test temperature is provided inside the fixing plate (3); A transparent sealing cover (12) is arranged on the outer side of the fixing plate (3) in a liftable manner.

2. A mattress compression permanent deformation testing device according to claim 1, characterized in that: The middle part of the support base (1) is slidably connected to a limit rod (16), the top of the limit rod (16) is fixedly connected to a test placement plate (14), and a pressure sensor (15) is fixedly connected between the support base (1) and the test placement plate (14).

3. A mattress compression permanent deformation testing device according to claim 2, characterized in that: The four corners of the top of the support base (1) are fixedly connected to lifting columns (2), the top of the lifting columns (2) is fixedly connected to a top plate (4), and the fixed plate (3) is slidably connected to the lifting columns (2).

4. A mattress compression permanent deformation testing device according to claim 1, characterized in that: A fan (6) is installed on the top of each ventilation pipe (5).

5. The mattress compression permanent deformation testing device according to claim 1, characterized in that: The top of the test pressing plate (11) is fixedly connected to a limit lifting rod (8), the limit lifting rod (8) is slidably connected to the fixed plate (3), the outer side of the limit lifting rod (8) is fixedly connected to the limit plate, and the outer side of the limit lifting rod (8) and below the limit plate is slidably connected to a connecting rod (10).

6. A mattress compression permanent deformation testing device according to claim 5, characterized in that: A return spring (9) is installed between the connecting rod (10) and the limiting plate, and the inner wall of the transparent sealing cover (12) is fixedly connected to the connecting rod (10).

7. The mattress compression permanent deformation testing device according to claim 1, characterized in that: A hole matching the arc-shaped model (17) is provided in the middle of the fixing plate (3); a driving motor (18) is fixedly connected to one end of the fixing plate (3); and an output end of the driving motor (18) is fixedly connected to the arc-shaped model (17).

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