Mattress spring fatigue testing device

Abstract

The utility model discloses a mattress spring fatigue testing device which comprises a testing base frame, a compression driving assembly, a stroke adjusting assembly and a driving motor fixed on the inner side of the testing base frame, a top table seat is fixedly installed on the top face of the testing base frame, and a main shaft rod is arranged at the output end of the driving motor. And a rotary tray and a guide sleeve rod which are sleeved on the periphery of the main shaft rod are rotationally mounted on the surface of the test base frame. According to the utility model, the motion stroke and pressure of the plunger pressure head are accurately controlled, so that the fatigue test of the mattress spring is more real and has high precision, and through the detection mechanism of the air pressure sensor, the device not only can carry out standard fatigue test, but also can monitor the change of the counter-acting force of the mattress spring in real time; and thus, elastic force attenuation data is obtained.

Description

Technical Field

[0001] This utility model relates to the field of mattress manufacturing technology, specifically a mattress spring fatigue testing device. Background Technology

[0002] Mattresses, as household items, are widely used in daily life. The quality of a mattress directly affects people's sleep quality; therefore, mattress comfort and durability have become key concerns for both consumers and manufacturers. One of the core components of a mattress is the spring, and its quality, elasticity, and fatigue resistance directly determine the mattress's lifespan and comfort.

[0003] As competition intensifies in the mattress market, mattress manufacturers are increasingly focusing on fatigue performance testing of springs. After prolonged use, the elasticity of mattress springs diminishes, leading to a decrease in mattress comfort and support. To ensure the quality of mattress springs, manufacturers typically conduct fatigue tests to ensure they maintain good elasticity and support even after extended use. However, existing fatigue testing equipment has several limitations, primarily in the following aspects:

[0004] Insufficient testing accuracy: Most existing mattress spring fatigue testing devices lack the function of precisely controlling the movement stroke, and cannot simulate the complex load conditions that mattress springs are subjected to during actual use, resulting in inaccurate test results.

[0005] The inability to adjust the testing requirements for different spring specifications: Due to the wide variety of mattress springs, existing equipment often cannot flexibly adjust the stroke and pressure according to the specifications and characteristics of different mattress springs, resulting in poor equipment adaptability and inability to meet the testing needs of various mattress springs on the market.

[0006] Insufficient measurement of reaction force: Most existing testing devices can only simulate the downward compression of mattress springs, but cannot measure the reaction force of mattress springs in real time. This means that the test results can only reflect the compression of the springs and lack a comprehensive evaluation of the true performance of mattress springs.

[0007] To address the aforementioned problems, this invention proposes a mattress spring fatigue testing device. Through optimized design and precise control, this device effectively overcomes the shortcomings of existing technologies. Specifically, this invention ensures more realistic and accurate fatigue testing of mattress springs by precisely adjusting the stroke and pressure of the plunger head. Simultaneously, the inclusion of a pneumatic pressure sensor feedback mechanism allows for real-time sensing of the mattress spring's reaction force, providing a more comprehensive basis for mattress spring performance evaluation. Utility Model Content

[0008] This utility model relates to a mattress spring fatigue testing device, specifically a device for testing the fatigue and elasticity decay of mattress springs during long-term use. This device can simulate the repeated compression of mattress springs during actual use and evaluate the performance changes of the mattress springs through precise control of pressure and stroke.

[0009] The technical solution of this utility model includes the following main components:

[0010] The test frame serves as the support structure for the entire device, providing stable support for all components and ensuring the stability of the testing process.

[0011] The compression drive assembly consists of a cylinder liner seat, an inclined guide plate, and several plunger heads. This assembly uses pneumatic or electric drive to make the plunger heads slide up and down on the rotating tray, thereby simulating the repeated pressure of mattress springs during long-term use.

[0012] The stroke adjustment assembly consists of a swashplate guide and an adjustment rod, used to adjust the stroke of the plunger head. By adjusting the tilt angle of the swashplate guide, the vertical movement distance of the plunger head can be precisely controlled, thereby controlling the depth and frequency of compression of the mattress springs.

[0013] The drive motor rotates the rotating tray via the main shaft, which in turn causes the plunger head to apply pressure. This motor provides a stable driving force, ensuring precise control during the testing process.

[0014] The rotating tray works in conjunction with the guide rod to ensure that the plunger head accurately and stably presses down on the mattress springs. The rotating tray can rotate with the main shaft, driving the plunger head to perform up-and-down reciprocating motion.

[0015] A pressure sensor is installed inside the guide groove to sense the reaction force of the mattress springs below the plunger head in real time. This sensor can monitor the rebound force of the mattress springs in real time, ensuring accurate assessment of the fatigue performance of the mattress springs at each testing stage.

[0016] Through the above technical solution, the mattress spring fatigue testing device of this utility model can accurately simulate the fatigue performance changes of mattress springs during use, and adjust the stroke of the plunger head by adjusting the stroke adjustment component, thereby controlling the fatigue testing process of the mattress spring.

[0017] This utility model has the following beneficial effects:

[0018] High-precision testing: By precisely controlling the stroke and pressure of the plunger head, the fatigue testing of mattress springs is made more realistic and highly accurate.

[0019] Adjustment flexibility: The travel can be adjusted by the adjustment lever of the travel adjustment component, allowing the device to adapt to the fatigue testing requirements of mattress springs of different specifications.

[0020] Multifunctional testing: Through the detection mechanism of the air pressure sensor, this device can not only perform standard fatigue tests, but also monitor the changes in the reaction force of the mattress springs in real time, thereby obtaining data on the reduction of elastic force.

[0021] In summary, this invention's mattress spring fatigue testing device, through its advanced control mechanism and reliable hardware design, provides an efficient, accurate, and stable solution for mattress spring fatigue testing, meeting the needs of mattress spring production and quality inspection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the compression drive assembly and stroke adjustment assembly according to an embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the compression drive assembly and stroke adjustment assembly according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of a cylinder liner seat according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the rotating tray and plunger head structure according to one embodiment of the present invention.

[0027] Figure label:

[0028] 100 Test base frame; 110 Top platform; 120 Turntable; 130 Drive motor; 121 Guide sleeve rod; 131 Main spindle rod; 200 Compression drive assembly; 210 Cylinder liner seat; 220 Slant guide plate; 230 Piston head; 211 Piston rod; 300 Stroke adjustment assembly; 310 Slant plate guide seat; 320 Adjusting rod; 321 Connecting rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0031] The following is in conjunction with the appendix Figures 1-5 This invention describes a mattress spring fatigue testing device provided by some embodiments of the present invention.

[0032] In this embodiment, the mattress spring fatigue testing device mainly includes components such as a test base frame 100, a compression drive assembly 200, a stroke adjustment assembly 300, a drive motor 130, a turntable 120, a guide rod 121, a plunger head 230, an inclined guide plate 220, and a piston rod 211.

[0033] The test base 100 is the main load-bearing component of this device, providing stable support. Inside the test base 100 is a drive motor 130 and a main shaft 131 connected to it. The main shaft 131 is connected to other components via a rotating tray 120 and a guide sleeve 121. The top platform 110 is fixed to the top of the test base 100, serving to support and fix the compression drive assembly 200.

[0034] The compression drive assembly 200 consists of a cylinder liner seat 210, an inclined guide plate 220, and several plunger heads 230. The inner side of the cylinder liner seat 210 mates with the piston rod 211 and the surface of the plunger heads 230. Through the reciprocating motion of the piston rod 211, the plunger heads 230 are driven to slide up and down on the rotating tray 120, thereby realizing the fatigue test of the mattress spring.

[0035] Specifically, the bottom end of the inclined guide plate 220 is movably connected to several piston rods 211, which are driven by pneumatic or electric pressure to make the plunger head 230 reciprocate downward on the surface of the rotating tray 120, simulating the repeated pressure of the mattress spring during long-term use.

[0036] The stroke adjustment assembly 300 consists of a swashplate guide seat 310 and an adjusting rod 320. The swashplate guide seat 310 is installed inside the test base 100 and slides in contact with the top surface of the swashplate 220. By moving the adjusting rod 320, the tilt angle of the swashplate guide seat 310 can be adjusted, thereby adjusting the stroke of the plunger head 230. The stroke adjustment process is achieved through the adjusting rod 320 and the connecting rod 321. The adjusting rod 320 is fixed to the surface of the test base 100 and connected to the swashplate guide seat 310 on one side.

[0037] The rotating tray 120 is mounted on the surface of the test base 100 and sleeved around the outer periphery of the main shaft 131, allowing it to rotate with the main shaft 131. The guide sleeve 121 cooperates with the rotating tray 120 to ensure that the plunger head 230 can accurately apply pressure to the mattress springs when performing a downward pressing action.

[0038] The plunger head 230 consists of several plunger heads, each with a receiving groove at its lower end for receiving mattress springs. The number and position of the plunger heads 230 can be set according to testing requirements, and they are usually evenly arranged circumferentially on the surface of the turntable 120.

[0039] A pressure sensor is installed inside the guide groove 212 to monitor the reaction force of the mattress springs below the plunger head 230 in real time. The sensor senses the pressure inside the guide groove 212 and feeds it back to the control system to accurately assess the elasticity decay effect of the mattress springs.

[0040] Working principle

[0041] Driven by the drive motor 130, the main shaft 131 rotates, which in turn drives the rotating tray 120 to rotate. The rotating tray 120 achieves precise control of the plunger head 230 through sliding engagement with the guide sleeve rod 121. The inclined guide plate 220 in the compression drive assembly 200 achieves the up-and-down movement of the plunger head 230 when testing the mattress springs through sliding contact with the inclined guide seat 310.

[0042] The stroke adjustment assembly 300 controls the tilt angle of the swashplate guide seat 310 via the adjustment rod 320, thereby adjusting the stroke of the plunger head 230. A pressure sensor monitors the reaction force of the mattress spring beneath the plunger head 230 in real time, adjusting the working state based on actual test results.

[0043] This design ensures that the mattress springs are repeatedly compressed during fatigue testing, simulating fatigue changes in the actual use environment, thereby accurately assessing the elasticity decay of the mattress springs.

[0044] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A mattress spring fatigue testing device, characterized in that, include: The test base (100), compression drive assembly (200), stroke adjustment assembly (300), and drive motor (130) fixed inside the test base (100) are included. A top platform (110) is fixedly installed on the top surface of the test base (100). A main shaft (131) is provided at the output end of the drive motor (130). A rotating tray (120) and a guide sleeve (121) sleeved on the outer periphery of the main shaft (131) are rotatably installed on the surface of the test base (100). The compression drive assembly (200) includes a cylinder liner seat (210), a slanted guide plate (220), and several plunger heads (230) movably installed on the bottom surface of the cylinder liner seat (210). Several piston rods (211) are movably connected to the bottom end of the slanted guide plate (220). The cylinder liner seat (210) has a guide groove (212) on its inner side that is sleeved on the surface of the piston rod (211) and the plunger head (230). One side of the plunger head (230) is slidably connected to the surface of the guide sleeve rod (121) and the sliding direction is perpendicular to the surface of the turntable (120). The stroke adjustment assembly (300) includes a swashplate guide seat (310) and an adjustment rod (320). The swashplate guide seat (310) is rotatably mounted on the inner side of the test base frame (100), and the bottom surface of the swashplate guide seat (310) slides against the top surface of the swashplate guide (220). One side of the swashplate guide seat (310) is provided with a connecting rod (321) that is connected to the output end of the adjustment rod (320). The adjustment rod (320) is fixed to the surface of the test base frame (100).

2. The mattress spring fatigue testing device according to claim 1, characterized in that, The cylinder liner seat (210) and the rotating tray (120) are fixedly sleeved on the surface of the main shaft (131), and the cylinder liner seat (210), piston rod (211) and rotating tray (120) are driven to rotate synchronously by the drive motor (130).

3. The mattress spring fatigue testing device according to claim 1, characterized in that, The piston rod (211) and the plunger head (230) are arranged relative to each other and are correspondingly sleeved on the inner side of the guide groove (212). A pressure sensor is provided on the inner side of the guide groove (212) to sense the pressure inside the guide groove (212).

4. The mattress spring fatigue testing device according to claim 1, characterized in that, The number of plunger heads (230), piston rods (211), and guide grooves (212) is several and they are evenly distributed in a circumferential direction.

5. The mattress spring fatigue testing device according to claim 1, characterized in that, The two sides of the swashplate guide seat (310) are rotatably connected to the inner side of the top platform seat (110), and the adjusting rod (320) is used to drive the swashplate guide seat (310) to tilt and deflect.

6. The mattress spring fatigue testing device according to claim 1, characterized in that, The surface of the turntable (120) is provided with several receiving grooves that correspond one-to-one with the plunger head (230) for placing the mattress springs.

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