A latex mattress compression testing device

Abstract

This utility model discloses a latex mattress pressure resistance testing device, relating to the field of latex mattress technology. It includes a testing platform with a positioning mechanism at its bottom. Test racks are symmetrically arranged on both sides of the upper part of the testing platform. Parallel movement mechanisms are located at the top of adjacent surfaces of the two test racks. A vertical movement mechanism is also located on the side of any test rack. A turning movement mechanism is located at the bottom of the opposite side of the vertical movement mechanism. A connecting plate is rotatably connected to the ends of the parallel, vertical, and turning movement mechanisms. An angle movement mechanism is located below the connecting plate. The positioning mechanism quickly centers and clamps the mattress, achieving rapid mattress fixation. Combined with the parallel, vertical, and turning movement mechanisms, the testing plate can be moved and rotated at various points along the X, Y, and Z axes. Simultaneously, the coordinated control with the angle movement mechanism can simulate pressure applied to the mattress from different directions and angles, covering comprehensive pressure resistance testing needs.

Description

Technical Field

[0001] This utility model relates to the field of latex mattress technology, specifically to a latex mattress pressure resistance testing device. Background Technology

[0002] Latex mattresses are made from the sap of rubber trees. They are produced using sophisticated technology and modern equipment and techniques, including molding, foaming, gelling, vulcanization, washing, drying, shaping and packaging, to create modern, green bedding products with a variety of excellent properties that are suitable for healthy and high-quality sleep. Existing technologies for testing the pressure resistance of latex mattresses mostly employ a vertical uniaxial pressure testing mode. A typical structure is exemplified by the rapid pressure resistance testing device for latex mattresses described in announcement number CN216208210U. This device uses a hydraulic drive unit to control a rigid pressure plate to press vertically down onto the mattress surface, and uses pressure sensors on the pressure plate to collect vertical pressure data of the contact area. While such devices can achieve basic pressure value measurement, they are overly idealistic and exhibit significant technical shortcomings in practical applications. Current tests use the Z-axis pressure perpendicular to the mattress surface as the sole loading direction. However, in actual use, the mattress edge area often experiences lateral shear forces (X / Y axial components) generated by the body turning over, and existing devices cannot simulate this complex stress state. Studies have shown that when the pressure direction forms an angle of more than 15° with the vertical axis, the stress distribution pattern of the latex material will change significantly, leading to deviations between traditional vertical test data and actual working conditions. Furthermore, there is a fundamental difference between the contact pattern of a fixed flat pressure plate and the curved surface of the human body.

[0003] Although existing technologies improve testing accuracy by increasing the number of pressure points, they still fail to overcome the fundamental limitation of applying force vertically along a single axis. Therefore, there is an urgent need to develop testing devices with multi-vector pressure loading capabilities to realistically simulate the multi-dimensional force scenarios experienced by the human body and accurately assess the comprehensive pressure resistance performance of latex mattresses in different directions and angles during actual use. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution, including: The test bench has a positioning mechanism at its bottom and test frames symmetrically arranged on both sides above it. The top of each adjacent surface of the two test frames is provided with a parallel moving mechanism, and a vertical moving mechanism is also provided on the side of any test frame. A turning moving mechanism is also provided at the bottom of the opposite side of the vertical moving mechanism. The ends of the parallel moving mechanism, the vertical moving mechanism and the turning moving mechanism are rotatably connected to a connecting plate, and an angle moving mechanism is provided below the connecting plate.

[0005] Furthermore, the vertical moving mechanism and the parallel moving mechanism are arranged vertically, and the vertical moving mechanism and the steering moving mechanism are arranged vertically.

[0006] Furthermore, the parallel movement mechanism, the vertical movement mechanism, and the steering movement mechanism each include: a fixed block, a sliding rod, a second ball screw, a second threaded sleeve, a first connecting rod, a second connecting rod, and a second drive motor; Two fixed blocks are symmetrically arranged on the test frame. Two sliding rods are provided between the two fixed blocks. The two sliding rods pass through and are slidably connected to both ends of the second threaded sleeve. A second ball screw is also rotatably provided between the two fixed blocks. Either end of the second ball screw is connected to the output end of the second drive motor. The second ball screw is threadedly connected to the middle of the second threaded sleeve. One end of the first connecting rod is rotatably provided on the second threaded sleeve. The other end of the first connecting rod is rotatably connected to one end of the second connecting rod. The other end of the second connecting rod is rotatably connected to the connecting plate.

[0007] Furthermore, the angle movement mechanism includes a straight plate, an arc plate, a driving rod, a first driven rod, a second driven rod, a third driven rod, a fourth driven rod, a slider, a support rod, a test plate, a pressure sensor, and a third drive motor; One end of the straight plate is connected to the connecting plate, and the other end is connected to the arc plate. The arc plate has an arc groove. The slider is slidably disposed in the arc groove and fixedly connected to one side of the support rod. The other end of the support rod is connected to the test plate, and a pressure sensor is installed on the test plate. A third drive motor is provided on one side of the straight plate. The output end of the third drive motor passes through the straight plate and is fixedly connected to one end of the drive rod. The other end of the drive rod is rotatably connected to one end of the first driven rod and one end of the second driven rod. The other ends of the first driven rod and the second driven rod are respectively rotatably connected to one end of the third driven rod and the fourth driven rod. The other ends of the third driven rod and the fourth driven rod are both rotatably connected to one end of the support rod.

[0008] Furthermore, the positioning mechanism includes: A cross-shaped opening is formed at the bottom of the test bench. Moving blocks are slidably provided at both ends of the horizontal and vertical directions inside the opening. A limit rod is connected above the moving blocks, and a first threaded sleeve is connected below each moving block. A first ball screw is threadedly connected inside the first threaded sleeve. The two first ball screws are arranged in a cross shape and are rotatably set at the bottom of the test bench. Each first ball screw has a first drive motor at one end and is connected to its output end.

[0009] Furthermore, each of the test fixtures is also equipped with a display screen.

[0010] Furthermore, the bottom surface of the test plate is a contoured indenter.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are: This invention uses a positioning mechanism to drive a limiting rod to move bidirectionally via a cross-shaped ball screw, quickly completing the centering and clamping of the mattress, avoiding displacement deviation during testing, and achieving rapid mattress fixation. Combining parallel movement mechanism, vertical movement mechanism and steering movement mechanism to form multi-directional movement, it can drive the test plate to move and rotate at various points on the X, Y and Z axes. At the same time, the coordinated control with the angle movement mechanism can simulate the pressure action on the mattress from different directions and angles at a point, covering comprehensive pressure resistance test needs. The device employs a ball screw drive and multi-link linkage structure to improve transmission accuracy and stability; through the cooperation of a contoured pressure head and a pressure sensor, it accurately reproduces the pressure state of the mattress, ensuring the reliability of the test data; the overall device has a compact structure and a high degree of automation, significantly improving testing efficiency and practicality. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning mechanism in this utility model; Figure 3 This is a partial sectional view of the present invention; Figure 4 This is a schematic diagram showing the connection relationship between the parallel movement mechanism, the vertical movement mechanism, and the steering movement mechanism in this utility model; Figure 5 yes Figure 4 Enlarged detail image of point A in the middle.

[0014] In the diagram: 1. Test bench; 2. Test frame; 3. Parallel movement mechanism; 4. Vertical movement mechanism; 5. Steering movement mechanism; 6. Connecting plate; 7. Angle movement mechanism; 701. Straight plate; 702. Arc plate; 703. Driving rod; 704. First driven rod; 705. Second driven rod; 706. Third driven rod; 707. Fourth driven rod; 708. Slider; 709. Support rod; 710. Test plate; 711. Pressure sensor; 712. Third drive motor; 8. Fixed block; 9. Sliding rod; 10. Second ball screw; 11. Second threaded sleeve; 110. Opening; 111. Moving block; 112. Limiting rod; 113. First threaded sleeve; 114. First ball screw; 115. First drive motor; 12. First connecting rod; 13. Second connecting rod; 14. Second drive motor; 15. Display screen. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 5 The technical solution provided by this utility model is as follows: a latex mattress pressure resistance testing device, comprising: a test platform 1, a positioning mechanism 11 provided at the bottom of the test platform 1, the positioning mechanism 11 comprising: a cross-shaped opening 110 opened at the bottom of the test platform 1, a movable block 111 slidably provided at both ends of the horizontal and vertical directions in the opening 110, a limit rod 112 connected above the movable block 111, a first threaded sleeve 113 connected below each of the movable blocks 111, a first ball screw 114 threadedly connected inside the first threaded sleeve 113, two first ball screws 114 being cross-shaped and rotatably disposed at the bottom of the test platform 1, and a first drive motor 115 provided at one end of each first ball screw 114 and connected to its output end.

[0017] In this embodiment, the first ball screw 114 is a bidirectional ball screw. When the first drive motor 115 starts, it drives the first ball screw 114 to rotate, which in turn drives the first threaded sleeve 113 and the moving block 111 to slide along the horizontal and vertical directions of the cross-shaped opening 110 through threaded transmission, thereby adjusting the position of the limiting rod 112. When the two moving blocks 111 move synchronously, the limiting rod 112 clamps the mattress from both sides, achieving rapid centering and fixing.

[0018] The cross-shaped bidirectional lead screw linkage ensures precise mattress positioning and avoids errors caused by displacement during testing; the rigid connection between the limit rod 112 and the moving block 111 provides stable clamping force to adapt to the fixing needs of mattresses of different sizes.

[0019] Test racks 2 are symmetrically arranged on both sides above the test bench 1. Parallel moving mechanisms 3 are provided at the top of the adjacent surfaces of the two test racks 2. A vertical moving mechanism 4 is also provided on the side of any test rack 2. A turning moving mechanism 5 is also provided at the bottom of the opposite side of the vertical moving mechanism 4. A connecting plate 6 is rotatably connected to the ends of the parallel moving mechanism 3, the vertical moving mechanism 4 and the turning moving mechanism 5. An angle moving mechanism 7 is provided below the connecting plate 6. A display screen 15 is also provided on any test rack 2. The bottom surface of the test plate 710 is a contouring pressure head.

[0020] The vertical moving mechanism 4 and the parallel moving mechanism 3 are arranged vertically, and the vertical moving mechanism 4 and the steering moving mechanism 5 are arranged vertically.

[0021] In this embodiment, the parallel movement mechanism 3, the vertical movement mechanism 4, and the steering movement mechanism 5 each include: a fixed block 8, a sliding rod 9, a second ball screw 10, a second threaded sleeve 11, a first connecting rod 12, a second connecting rod 13, and a second drive motor 14. Two fixed blocks 8 are symmetrically arranged on the test frame 2. Two sliding rods 9 are provided between the two fixed blocks 8. The two sliding rods 9 pass through and are slidably connected to both ends of the second threaded sleeve 11. A second ball screw 10 is rotatably provided between the two fixed blocks 8. Any end of the second ball screw 10 is connected to the output end of the second drive motor 14. The second ball screw 10 is threadedly connected to the middle of the second threaded sleeve 11. One end of the first connecting rod 12 is rotatably provided on the second threaded sleeve 11. The other end of the first connecting rod 12 is rotatably connected to one end of the second connecting rod 13. The other end of the second connecting rod 13 is rotatably connected to the connecting plate 6.

[0022] In this embodiment, the parallel moving mechanism 3 drives the connecting plate 6 to move horizontally along the test frame 2, covering the test points along the length of the mattress; Vertical moving mechanism 4: drives the connecting plate 6 to move vertically up and down, adjusting the test height; Steering and moving mechanism 5: Changes the position and orientation of the test plate 710 by rotating the angle to simulate pressure in different directions.

[0023] The parallel movement mechanism 3, vertical movement mechanism 4, and steering movement mechanism 5 all drive the second ball screw 10 to rotate via the second drive motor 14, causing the second threaded sleeve 11 to move along the sliding rod 9. The displacement of the second threaded sleeve 11 is converted into linear or rotational motion of the connecting plate 6 via the first connecting rod 12 and the second connecting rod 13, achieving multi-directional displacement control. The three sets of movement mechanisms are arranged vertically to achieve independent control of the X / Y / Z axes, expanding the testing range; and the pressure data and parameters are displayed in real time on the display screen 15, improving the intuitiveness of operation; the contoured pressure head conforms to the mattress surface to avoid local deformation and ensure the authenticity of the test.

[0024] In this embodiment, the angle moving mechanism 7 includes a straight plate 701, an arc plate 702, an active rod 703, a first driven rod 704, a second driven rod 705, a third driven rod 706, a fourth driven rod 707, a slider 708, a support rod 709, a test plate 710, a pressure sensor 711, and a third drive motor 712. One end of the straight plate 701 is connected to the connecting plate 6, and the other end is connected to the arc plate 702. The arc plate 702 has an arc-shaped sliding groove. The slider 708 is slidably disposed in the arc-shaped sliding groove and is fixedly connected to one side of the support rod 709. The other end of the support rod 709 is connected to the test plate 710. A pressure sensor 711 is installed on the test plate 710. A third drive motor 712 is provided on one side of the straight plate 701. The output end of the third drive motor 712 passes through the straight plate 701 and is fixedly connected to one end of the drive rod 703. The other end of the drive rod 703 is rotatably connected to one end of the first driven rod 704 and the second driven rod 705. The other ends of the first driven rod 704 and the second driven rod 705 are respectively rotatably connected to one end of the third driven rod 706 and the fourth driven rod 707. The other ends of the third driven rod 706 and the fourth driven rod 707 are both rotatably connected to one end of the support rod 709.

[0025] This embodiment is implemented as follows: the third drive motor 712 drives the active rod 703 to rotate, the active rod 703 pushes the first driven rod 704 and the second driven rod 705, thereby causing the third driven rod 706 and the fourth driven rod 707 to swing. The driven rod assembly forces the support rod 709 to slide along the arc-shaped groove of the arc plate 702, causing the test plate 710 to deflect around the arc-shaped trajectory, thus achieving multi-angle pressure application.

[0026] Specifically, in this embodiment, while the support rod 709 slides along the arc-shaped groove of the arc-shaped plate 702 for multi-angle adjustment, the positions of the test plate 710 at the bottom and the contour pressure head on the bottom surface remain unchanged, simulating the pressure of the human body at different angles when a point is fixed. The test plate 710 achieves multi-angle adaptive adjustment through a multi-link linkage design, simulating the pressure of the human body's sitting or lying posture on the mattress; the arc-shaped groove restricts the movement trajectory, ensuring smooth angle adjustment and accurate data from the pressure sensor 711.

[0027] In this embodiment, the pressure sensor 711 is model LCD806 and the display screen 15 is model ENH-SS912126-01. The structural features, working principle and specific circuit structure of the above components are all based on existing technology and will not be described in detail here.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A latex mattress compression detection device, comprising a test table (1), characterized in that: The test bench (1) is provided with a positioning mechanism at the bottom. Test racks (2) are symmetrically provided on both sides above the test bench (1). Parallel moving mechanisms (3) are provided at the top of the adjacent surfaces of the two test racks (2). A vertical moving mechanism (4) is also provided on the side of any test rack (2). A turning moving mechanism (5) is also provided at the bottom of the opposite side of the vertical moving mechanism (4). A connecting plate (6) is rotatably connected to the ends of the parallel moving mechanism (3), the vertical moving mechanism (4) and the turning moving mechanism (5). An angle moving mechanism (7) is provided below the connecting plate (6).

2. The pressure-resistant detection device for latex mattress according to claim 1, characterized in that: The vertical moving mechanism (4) and the parallel moving mechanism (3) are arranged vertically, and the vertical moving mechanism (4) and the turning moving mechanism (5) are arranged vertically.

3. The pressure detection device for latex mattress according to claim 1, characterized in that: The parallel movement mechanism (3), vertical movement mechanism (4) and steering movement mechanism (5) each include: a fixed block (8), a sliding rod (9), a second ball screw (10), a second threaded sleeve (11), a first connecting rod (12), a second connecting rod (13), and a second drive motor (14); Two fixed blocks (8) are provided symmetrically on the test frame (2). Two sliding rods (9) are provided between the two fixed blocks (8). The two sliding rods (9) pass through and slide to both ends of the second threaded sleeve (11). A second ball screw (10) is also rotatably provided between the two fixed blocks (8). Any end of the second ball screw (10) is connected to the output end of the second drive motor (14). The second ball screw (10) is threaded to the middle of the second threaded sleeve (11). One end of the first connecting rod (12) is rotatably provided on the second threaded sleeve (11). The other end of the first connecting rod (12) is rotatably connected to one end of the second connecting rod (13). The other end of the second connecting rod (13) is rotatably connected to the connecting plate (6).

4. The latex mattress compression detection device of claim 3, wherein: The angle moving mechanism (7) includes a straight plate (701), an arc plate (702), an active rod (703), a first driven rod (704), a second driven rod (705), a third driven rod (706), a fourth driven rod (707), a slider (708), a support rod (709), a test plate (710), a pressure sensor (711), and a third drive motor (712). One end of the straight plate (701) is connected to the connecting plate (6), and the other end is connected to the arc plate (702). The arc plate (702) has an arc groove. The slider (708) is slidably disposed in the arc groove and fixedly connected to one side of the support rod (709). The other end of the support rod (709) is connected to the test plate (710). A pressure sensor (711) is installed on the test plate (710). A third drive motor (712) is provided on one side of the straight plate (701). The output end of the third drive motor (712) passes through the straight plate (701) and is fixedly connected to one end of the active rod (703). The other end of the active rod (703) is rotatably connected to one end of the first driven rod (704) and the second driven rod (705). The other ends of the first driven rod (704) and the second driven rod (705) are respectively rotatably connected to one end of the third driven rod (706) and the fourth driven rod (707). The other ends of the third driven rod (706) and the fourth driven rod (707) are both rotatably connected to one end of the support rod (709).

5. The pressure detection device for latex mattress according to claim 1, characterized in that: The positioning mechanism includes: A cross-shaped opening (110) is opened at the bottom of the test bench (1). Moving blocks (111) are slidably provided at both ends of the horizontal and vertical directions inside the opening (110). A limit rod (112) is connected above the moving block (111). A first threaded sleeve (113) is connected below the moving block (111). A first ball screw (114) is threaded inside the first threaded sleeve (113). The two first ball screws (114) are arranged in a cross shape and rotated at the bottom of the test bench (1). Each first ball screw (114) is provided with a first drive motor (115) at one end and connected to its output end.

6. The latex mattress compression detection device of claim 1, wherein: Each of the test fixtures (2) is also equipped with a display screen (15).

7. The latex mattress compression detection apparatus of claim 4, wherein: The bottom surface of the test plate (710) is a contour indenter.

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