CN111965058A - Multifunctional mattress hardness tester - Google Patents
Multifunctional mattress hardness tester Download PDFInfo
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- CN111965058A CN111965058A CN202010886762.1A CN202010886762A CN111965058A CN 111965058 A CN111965058 A CN 111965058A CN 202010886762 A CN202010886762 A CN 202010886762A CN 111965058 A CN111965058 A CN 111965058A
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- 238000012360 testing method Methods 0.000 claims abstract description 55
- 239000011664 nicotinic acid Substances 0.000 claims description 46
- 238000003825 pressing Methods 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 210000003141 lower extremity Anatomy 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005493 welding type Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 description 8
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- 101100457838 Caenorhabditis elegans mod-1 gene Proteins 0.000 description 2
- 101150110972 ME1 gene Proteins 0.000 description 2
- 210000001217 buttock Anatomy 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010017577 Gait disturbance Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000037237 body shape Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 235000000396 iron Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a multifunctional mattress softness tester, which comprises a bedstead, wherein front and back guide devices are correspondingly arranged on two sides of the bedstead, and a gantry support is arranged on the bedstead through the front and back guide devices, so that the gantry support can move back and forth on the bedstead; and the gantry support is correspondingly provided with a left guide device and a right guide device, and the left guide device and the right guide device are arranged above the bedstead and span the whole bedstead. The linear guide device and the left and right guide devices can drive the test lifting device to move randomly in the front-back direction and the left-right direction of the mattress, so that the measurement of the hardness of any position of the mattress is met; the invention can measure the hardness of mattress at single position, and can measure multiple positions to obtain the average hardness of mattress.
Description
Technical Field
The invention relates to the technical field of human engineering mattress research and measuring instruments, in particular to a multifunctional mattress hardness measuring instrument.
Background
The mattress is an important carrier for sleeping, ensures that a user can obtain healthy and comfortable sleeping, and the design of the mattress is increasingly important in order to meet the sleeping requirements of the human body. In the study of the mattress, the hardness of the mattress is the primary design factor, and in order to ensure the comfort of the human prone position, the hardness of the mattress should be matched with the requirements of the human body shape, so that the shape of the human prone position spine is in a natural state. In the prior art, the measurement of the hardness of the mattress is mostly based on the technical standard (QB/T1952.202011) of mattress production, indexes such as the hardness of the mattress are tested before delivery to ensure the quality and the safety of the mattress, or some portable hardness and softness testers are used for measuring the local hardness and softness of the mattress instead of simulating the process of using the mattress by a user. The hardness measured according to the quality standard of the mattress product is substantially different from the hardness felt by a user. According to human engineering, the hardness design of the mattress is designed according to the hardness required by human body, so that the pressure intensity of a person lying on the mattress is reasonably distributed, and the spine is flat and straight and unfolded.
Disclosure of Invention
The invention aims to provide a multifunctional mattress hardness tester aiming at the defects in the prior art; the technical scheme is as follows:
a multifunctional mattress softness tester comprises a bed frame, wherein front and rear guide devices are correspondingly arranged on two sides of the bed frame, and a gantry support is arranged on the bed frame through the front and rear guide devices, so that the gantry support can move back and forth on the bed frame; the gantry support is correspondingly provided with a left guide device and a right guide device, and the left guide device and the right guide device are arranged above the bedstead and span the whole bedstead; the left and right guide devices are correspondingly provided with a test lifting device, an electric push rod of the test lifting device extends downwards to be aligned with the bed frame, the end part of the lower end of the electric push rod is also correspondingly provided with a pressure sensor, and the bottom of the pressure sensor is also correspondingly provided with a loading pressure plate of the bionic mould of the human body; the loading pressure plate of the human body bionic mould is correspondingly provided with a circular plane pressure plate, and the circular plane pressure plate is correspondingly detachably connected with the pressure sensor; and an intelligent display control center is also installed on the bed frame and is correspondingly connected with the front and rear guide devices, the left and right guide devices and the test lifting device.
Preferably, the loading pressing plates of the human body bionic mould are three in number and are respectively set as a round plane pressing plate, a human body hip bionic pressing plate and a human body supine back integral bionic pressing plate which are used independently; and the whole bionic pressure plate on the back of the human body lying on the back is divided into five parts, namely a head and neck part, a shoulder and back part, a waist part, a hip part and a lower limb part of the human body respectively, the five parts are connected through tenon-shaped structures, each part can be used separately or in a splicing way, and the upper end of each bionic pressure plate is also provided with a connecting stud which is detachably mounted with a pressure sensor.
Preferably, the bed frame comprises a peripheral support frame for constructing an integral structure, a bed panel on the upper end face and universal wheels at the bottom, and the bed frame is of a steel combined welding type structure.
Preferably, the front and rear guide device comprises a front and rear linear circular guide rail and a front and rear sliding block used in cooperation, the front and rear linear circular guide rail is symmetrically installed on the outer sides of the left and right ends of the bed frame through bolts, and U-shaped limiting pipe clamps are further arranged at the two ends of the front and rear linear circular guide rail.
Preferably, the gantry support is arranged above the bedstead and comprises a left cross beam, a right cross beam and vertical pillars at the upper end and on the left side and the right side, the vertical pillars on the two sides are correspondingly and fixedly connected with front and rear sliders on the two sides of the front and rear guide devices, so that the gantry support is matched with the front and rear linear circular guide rails through the front and rear sliders to move front and rear.
Preferably, the left and right guide devices comprise left and right linear circular guide rails and left and right sliders which are matched with each other, two of the left and right linear guide rails are respectively embedded in corresponding inner sides of two left and right cross beams at the upper end of the gantry support, and the test lifting device is correspondingly connected with the left and right sliders, so that the test lifting device can move left and right on the gantry support.
Preferably, the test lifting device comprises a servo motor, a mechanical fine adjustment device matched with the servo motor, an electric push rod for realizing upward movement by providing power through the servo motor, and a supporting seat; the supporting seat is fixedly nested on an outer rod sleeve of the electric push rod, the bottom of an inner pressure rod of the electric push rod is correspondingly connected with a pressure sensor, and the servo motor, the mechanical fine-adjustment device and the pressure sensor are all connected with the intelligent display controller.
Preferably, the mechanical fine adjustment device comprises a fine adjustment motor and a disc type knob, the mechanical fine adjustment device performs fine adjustment according to the required pressure or displacement, and the displacement of the electric push rod is 1/12mm after the disc type knob rotates one circle; the electric push rod on be provided with the scale, the scale uses 1mm as a scale, cooperation electric push rod's stroke is total 350 mm.
Preferably, the intelligent display controller comprises a display screen, a starting switch, a lifting button and a speed adjusting knob, wherein the lifting button is provided with two steps of lifting and lowering, and the speed adjusting knob is provided with four steps of adjustment, namely 25mm/min, 50mm/min, 75mm/min and 100 mm/min.
Has the advantages that: the invention has the following beneficial effects:
(1) the linear guide device and the left and right guide devices can drive the test lifting device to move randomly in the front-back direction and the left-right direction of the mattress, so that the measurement of the hardness of any position of the mattress is met; the multiple test lifting devices can measure the hardness of the mattress at a single position, and can measure multiple positions simultaneously to obtain the average hardness of the whole mattress;
(2) according to the invention, the gantry support is arranged on the bed frame, the mattress is placed on the bed panel and is correspondingly placed below the test lifting device, so that the electric push rod of the test lifting device drives the loading pressure plate of the human body bionic mould to vertically act on the mattress, and the hardness and hardness coefficient of the mattress is obtained by adjusting the loading pressure value or displacement, thus the detection of the hardness and quality of the mattress can be realized, the structure is reasonable, and the operation is convenient;
(3) the loading pressing discs of the human body bionic mould are provided with three types, including a round plane pressing disc, a human body hip bionic pressing disc and a human body supine back integral bionic pressing disc which can be used independently; the bionic pressure plate for the buttocks of the human body and the integral bionic pressure plate for the supine back of the human body can simulate the pressure of the human body to act on the mattress, and the measurement and design research on the hardness of the mattress are carried out according to a certain group of people so as to evaluate the adaptability of the mattress and people;
(4) the invention has strong flexibility, convenient operation and wide applicability, and has important guiding significance for the design and research of the mattress by combining human engineering.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a side view of the present invention;
FIG. 5 is a top view of the present invention;
FIG. 6 is a view showing the structure of the test lift device of the present invention;
FIG. 7 is a view showing the construction of a circular plane platen according to the present invention;
FIG. 8 is a view showing the structure of a bionic press plate for buttocks of a human body according to the present invention;
FIG. 9 is a side view of FIG. 8;
FIG. 10 is a view of the whole bionic platen of the supine back of a human body in the invention;
FIG. 11 is an exploded view of FIG. 10;
FIG. 12 is a side view of FIG. 10;
fig. 13 and 14 are structural views of an intelligent display control center according to the present invention.
FIGS. 15-17 are illustrations of embodiments of the present invention.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 5, a multi-functional mattress softness tester comprises a bed frame 1, wherein front and rear guide devices 2 are correspondingly installed on both sides of the bed frame 1, and a gantry support 3 is installed on the bed frame 1 through the front and rear guide devices 2, so that the gantry support 3 can move back and forth on the bed frame 1; the gantry support 3 is correspondingly provided with a left guide device 4 and a right guide device 4, and the left guide device 4 is arranged above the bedstead 1 and spans the whole bedstead 1; the left and right guide devices 4 are correspondingly provided with a test lifting device 5, an electric push rod 503 of the test lifting device 5 extends downwards to be aligned with the bedstead 1, the lower end part of the electric push rod 503 is correspondingly provided with a pressure sensor 505, and the bottom of the pressure sensor 505 is correspondingly provided with a human body bionic mold loading pressure plate 6; the loading pressure plate 6 of the human body bionic mould is correspondingly provided with a circular plane pressure plate 601, and the circular plane pressure plate 601 is correspondingly detachably connected with the pressure sensor 505; the bedstead 1 is also provided with an intelligent display control center 7, and the intelligent display control center 7 is correspondingly connected with the front and back guiding devices 2, the left and right guiding devices 3 and the test lifting device 5.
The front and rear guide device 2 comprises a front and rear linear circular guide rail 201 and a front and rear sliding block 202 used in cooperation, the front and rear linear circular guide rail 201 is symmetrically installed on the outer sides of the left and right ends of the bedstead 1 through bolts, and U-shaped limiting pipe clamps are further arranged at the two ends of the front and rear linear circular guide rail 201.
The upper portion of bedstead 1 is equipped with portal frame 3, portal frame 3 comprises vertical pillar 302 and left and right crossbeam 301 of both sides, guider 2 around the bilateral symmetry of bedstead 1 installs, guider 2's front and back straight line circle guide rail 201 adopts the bolt to install in bedstead 1 left and right sides end outside position department around, slider 202 welding is in the inboard of portal frame 3 both sides vertical pillar 302 around guider 2, slider 202 and front and back straight line circle guide rail 201 around about, the cooperation of left and right sides slider 202 and front and back straight line circle guide rail 201 drives portal frame 3 freely to slide on the fore and aft direction of bedstead 1, the both ends of front and back straight line circle guide rail 201 still are equipped with the spacing pipe strap of U type in order to prevent portal frame 3 derail the landing in sliding process, portal frame 3 also adopts steel combination welded formula structure.
The inner sides of the left and right beams 301 of the gantry support 3 are provided with left and right guide devices 4, each left and right guide device 4 comprises a left and right linear circular guide rail 401 and a left and right slide block 402, the left and right linear circular guide rails 401 are connected with the left and right beams 301 of the gantry support 3 through bolts, the left and right slide blocks 402 are welded on a support base 504 of the test lifting device 5, and the combination of the left and right slide blocks 402 and the left and right linear circular guide rails 401 can enable the test lifting device 5 to move freely in the left and right directions of the bed frame.
As shown in fig. 6, the testing lifting device 5 is installed on the gantry support 3, and is equipped with a servo motor 501, a mechanical fine tuning device 502, an electric push rod 503, a support base 504, a pressure sensor 505 and a human body bionic mold loading platen 6 from top to bottom, the servo motor 501 is electrically connected to a transformer inside the intelligent display controller 7, the top end of the electric push rod 503 is connected with the servo motor 501, the outer rod of the electric push rod 503 is nested on the supporting seat 504, the supporting seat 504 is correspondingly fixed on the left and right sliding blocks 402, the pressure sensor 505 is fixed at the bottom end of the electric push rod 503, the loading pressure plate 6 of the human body bionic mould is connected below the pressure sensor 505 by a screw thread through an upper stud, the two are detachably arranged, the loading pressure plate is driven by the electric push rod 503 to vertically act on the test mattress, and the servo motor 501, the mechanical fine adjustment device 502 and the pressure sensor 505 are electrically connected to the intelligent display controller 7.
The mechanical fine-tuning device 502 comprises a fine-tuning motor and a disc-type knob 506, the mechanical fine-tuning device 502 performs fine tuning according to the required pressure or displacement, and the displacement of the electric push rod 503 is 1/12mm after the disc-type knob 506 rotates one circle; the electric push rod 503 is provided with a scale which takes 1mm as a scale, and the stroke of the electric push rod is 350 mm.
As shown in fig. 7 to 12, the loading platens 6 of the human body bionic mold are provided with three types, which are respectively provided as a circular plane platen 601, a human body hip bionic platen 602 and a human body supine back whole bionic platen 603 which are used independently; the whole bionic pressure plate 603 on the back of the person lying on the back is divided into five parts, namely a head part, a neck part, a shoulder part, a back part, a waist part, a hip part and a lower limb part of the person, the five parts are connected through tenon-shaped structures, each part can be used separately or in a splicing way, a connecting stud is further installed at the upper end of each bionic pressure plate, a groove is formed in the lower end cylinder of the pressure sensor 505, a fastening screw which is embedded in the groove in a matched mode is arranged in the groove, the connecting stud on each bionic pressure plate can be correspondingly screwed and embedded in the lower end face of the pressure sensor 505 through the fastening screw, and the connecting structure of the parts is.
As shown in fig. 13 and 14, the intelligent display controller 7 includes a display screen 701, a start switch 702, a lifting button 703 and a speed adjusting knob 704, wherein the lifting button 703 is provided with two steps of lifting and lowering, and the speed adjusting knob 704 is provided with four steps of adjusting, which are respectively 25mm/min, 50mm/min, 75mm/min and 100 mm/min.
Example 1
The bed frame in the embodiment is formed by welding square steel pipes, the size of the whole bed frame can be set to 2000mm 1200mm 600mm, the bed panel is made of a plate veneer with the thickness of 50mm, the bed panel is connected with the peripheral support frames through rivets and angle irons, the peripheral corners of the bed frame are all set to be round corner structures so as to avoid stumbling in the use process, and four corners of the bottom of the bed frame are all provided with universal wheels; the bed frame structure in the embodiment can ensure the overall stability of the tester and can also ensure the convenience of the transportation and moving processes.
The gantry support on the bedstead is welded by a square steel pipe frame with the caliber of 40mm and comprises pillars on two sides and a left cross beam and a right cross beam in the middle, front and rear guide devices are symmetrically arranged on two sides of the bedstead in the width direction, front and rear linear circular guide rails of the front and rear guide devices are arranged on the outer side of the bedstead through four bolts on the front and rear linear circular guide rails, two front and rear sliding blocks are welded on the inner sides of the pillars on two sides of the gantry support, a left guide device and a right guide device are arranged on the inner sides of the left and right; under this structure of this embodiment, the guider combines left and right sides guider on the gantry support around on the bedstead, can drive test elevating gear in the front and back of bedstead and control two directions and freely move, can test the softness and hardness of mattress different positions according to this.
The three test lifting devices are arranged in the embodiment, so that the hardness of the mattress can be measured by using one test lifting device independently, and the hardness of the mattress at three different positions can be measured simultaneously. The lead screw of the electric push rod is provided with scale marks, the scale marks take 1mm as one scale mark, the scale marks of the lead screw are set to be 350mm in the embodiment, and in the test process of the hardness of the mattress, after pressure loading, the displacement of the loading pressure plate can be read by the scale marks on the lead screw; the mechanical fine-tuning device is provided with a disc type button, the displacement of the electric push rod is 1/12mm when the disc type button rotates for one circle, and the device can perform fine tuning according to the loading pressure or the loading displacement required by a test scheme in the test process, so that the convenience and the precision of the test are improved; the loading force value range of each test lifting device in the embodiment is 0-500N.
The human body bionic mould loading pressure plate is arranged at the bottom of the test lifting device, and three pressure plates are arranged in the invention, namely a circular plane pressure plate, a human body hip bionic pressure plate and a human body supine back integral bionic pressure plate. The circular plane platen was tested for hardness according to the CTBA method using a standard rigid cylindrical platen with a diameter of 100mm as specified in international standard ISO 2439/B MOD 1 mattress performance testing to characterize the hardness of the mattress surface, core and base layers. The human hip bionic pressing disc and the human supine back integral bionic pressing disc are based on the national standard GB/T10000-1988 Chinese adult human body size and GB/T129850591 in the general rule of the human body size percentile in the product design.
In the embodiment, the pressing plate is made of 90% of adult men, and the two pressing plates are both made of a wooden device and silica gel. The whole bionic pressure plate for the back face of the person lying on the back can be spliced and split, and is mainly divided into a head and neck part, a shoulder and back part, a waist part, a hip part and a lower limb part of the person, and the five parts are connected through tenon-shaped structures. In use, the sizes of adult women and teenagers can be selected for manufacturing the loading mould, so that the pressure loading of all parts of the body is carried out according to the body mass in the GB/T17245-2004 adult human body inertia parameters, and the hardness and the adaptability of the mattress to the human body are evaluated through the obtained displacement of the pressing disc.
The intelligent display control instrument comprises a display screen, a starting switch, a lifting button and a speed adjusting knob, and can display the pressure value of a single test lifting device and also obtain a plurality of pressure values or average pressure values of a plurality of test lifting devices by adjusting the buttons on the display screen. The lifting button is provided with two lifting devices, and the electric push rod on the lifting device is controlled by the lifting button to drive the loading pressure plate of the human bionic mould to vertically move on the test mattress. The speed adjusting knob is provided with four-gear adjustment, namely 25mm/min, 50mm/min, 75mm/min and 100 mm/min.
The multifunctional mattress hardness tester in the embodiment has the following use steps:
1. testing the hardness of the mattress according to a CTBA method in international standard ISO 2439/B MOD 1;
1) firstly, placing a test mattress on a bed panel, determining the test position of the hardness of the mattress, and marking in advance;
2) adjust longmen support and test elevating gear, adjust to mattress test position with single test elevating gear, press close to the mattress surface with the loading pressure disk through the last lifting button of intelligent display control appearance.
3) According to the pressure range 0-250N specified by the standard, reading the displacement of the pressure plate on the electric push rod every 10N, thereby obtaining a curve of the indentation displacement along with the pressure, and further representing the hardness of the surface layer, the core layer and the bottom layer of the test mattress according to the indentation displacement;
4) and meanwhile, three testing lifting devices are adopted to test the hardness of the mattress at different positions so as to comprehensively evaluate the hardness of the mattress.
Testing the hardness of the mattress according to the human body bionic mould, and disassembling and replacing the human body hip bionic pressure plate to perform simulation test;
1) same as 1
2) Adjusting the gantry support and the test lifting device, adjusting the single test lifting device to a mattress test position, and pressing the bionic human hip pressure plate close to the surface of the mattress through a lifting button on the intelligent display controller, namely, contacting the lowest point of the pressure plate with the surface of the mattress;
3) replacing the bionic human body mold, obtaining pressure values of all parts of the human body according to the human body quality in the GB/T17245 plus 2004 adult human body inertia parameters, pressing down the pressure plate at a constant speed through the intelligent display control instrument until the loading force value reaches the human hip force value, and testing the displacement on the electric push rod of the lifting device to represent the sinking amount of the lowest point of the hip;
4) the bionic human hip pressure plate is manufactured according to the size of a human body, a human hip curve is extracted as shown in figure 15, a graph is processed in MATLAB, the area A of a shadow part in figure 15 is the area of the side face of the human hip, and S isAis-S rectangleBAs shown in fig. 15, the maximum sinking amount Y of the buttocksmax74.62mm, S is obtained by integrationB＝18716.28mm2At this time SAmax＝21873.72mm2。
Accordingly, the displacement Y on the electric push rod is recorded1Then, the area of Sc can be obtained as shown in FIG. 16. The hardness of the mattress is characterized by calculating the side sinking area ratio of the whole bionic pressure plate on the back of the supine human body: area ratio of sinking of mattress (S)C/SB) 100%, the higher the value when the same pressure is applied, the deeper the platen sinks, the softer the mattress for that type of populationAnd the harder the opposite. Similarly, when other human body pressure plates are replaced, the suitability of the mattress and the human body, particularly the waist area can be evaluated by calculating the sag area ratio of other parts of the human body. As shown in fig. 17, if the distance Y is depressed1The convex points of the waist are not reached, which indicates that the support of the mattress is insufficient.
5) The hardness of the mattress obtained by comparing a plurality of tests is further adjusted, and the reasonable design of the mattress can reasonably support all parts of the human body.
The invention can accurately and flexibly carry out simulation measurement on the hardness of the mattress by replacing the human body bionic mould, has accurate measurement result, convenient operation and use, stronger flexibility and wider applicability, and has important guiding significance for the design and research of the mattress by combining human engineering.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the invention and the appended claims, and all equivalent changes and modifications made within the spirit and scope of the invention as claimed should be included in the appended claims.
Claims (9)
1. The utility model provides a multi-functional mattress soft or hard degree tester which characterized in that: the bed comprises a bed frame (1), wherein front and rear guide devices (2) are correspondingly arranged on two sides of the bed frame (1), and a gantry support (3) is arranged on the bed frame (1) through the front and rear guide devices (2), so that the gantry support (3) can move back and forth on the bed frame (1); and the gantry support (3) is correspondingly provided with a left guide device and a right guide device (4), and the left guide device and the right guide device (4) are arranged above the bedstead (1) and span the whole bedstead (1); the left and right guide devices (4) are correspondingly provided with a test lifting device (5), an electric push rod (503) of the test lifting device (5) extends downwards to be aligned with the bedstead (1), the lower end part of the electric push rod (503) is also correspondingly provided with a pressure sensor (505), and the bottom of the pressure sensor (505) is also correspondingly provided with a loading pressure plate (6) of the bionic mould of the human body; the human body bionic mould loading pressure plate (6) is correspondingly provided with a circular plane pressure plate (601), and the circular plane pressure plate (601) is correspondingly detachably connected with the pressure sensor (505); the bed frame (1) is also provided with an intelligent display control center (7), and the intelligent display control center (7) is correspondingly connected with the front and rear guide devices (2), the left and right guide devices (3) and the test lifting device (5).
2. The multifunctional mattress softness and hardness tester according to claim 1, characterized in that: the loading pressing plates (6) of the human body bionic mould are provided with three types which are respectively a round plane pressing plate (601), a human body hip bionic pressing plate (602) and a human body supine back integral bionic pressing plate (603) which are independently used; and the whole bionic pressure plate (603) on the back of the person lying on the back is divided into five parts, namely a head and neck part, a shoulder and back part, a waist part, a hip part and a lower limb part of the person, the five parts are connected through tenon-shaped structures, each part can be used separately or in a splicing way, and the upper end of each bionic pressure plate is also provided with a connecting stud which is detachably mounted with the pressure sensor (505).
3. The multifunctional mattress softness and hardness tester according to claim 1, characterized in that: the bed frame (1) comprises a peripheral support frame (101) used for constructing an integral structure, a bed panel (102) on the upper end face and universal wheels (103) at the bottom, and the bed frame (1) is of a steel combined welding type structure.
4. The multifunctional mattress softness and hardness tester according to claim 1, characterized in that: the front and rear guide device (2) comprises a front and rear linear circular guide rail (201) and a front and rear sliding block (202) which are matched with the front and rear linear circular guide rail, the front and rear linear circular guide rail (201) is symmetrically arranged on the outer sides of the left and right ends of the bedstead (1) through bolts, and U-shaped limiting pipe clamps are further arranged at the two ends of the front and rear linear circular guide rail (201).
5. The multifunctional mattress softness and hardness tester according to claim 4, characterized in that: the gantry support (3) is arranged above the bedstead (1), the gantry support (3) comprises a left cross beam (301) and a right cross beam (301) at the upper end and vertical pillars (302) at the left side and the right side, the vertical pillars (302) at the two sides are correspondingly fixedly connected with front and rear sliding blocks (202) at the two sides of the front and rear guide devices (2), so that the gantry support (3) is integrally matched with the front and rear linear circular guide rails (201) through the front and rear sliding blocks (202) to realize front and rear movement.
6. The multifunctional mattress softness and hardness tester according to claim 5, characterized in that: the left and right guide devices (4) comprise left and right linear circular guide rails (401) and left and right sliding blocks (402) which are matched for use, two left and right linear guide rails (401) are respectively embedded at the corresponding inner sides of two left and right cross beams (301) at the upper end of the gantry support (3), and the test lifting device (5) is correspondingly connected with the left and right sliding blocks (402), so that the test lifting device (5) can move left and right on the gantry support (3).
7. The multifunctional mattress softness and hardness tester according to claim 6, characterized in that: the test lifting device (5) comprises a servo motor (501), a mechanical fine adjustment device (502) matched with the servo motor (501), an electric push rod (503) for realizing upward movement by providing power through the servo motor (501), and a support seat (504); the supporting seat (504) is fixedly nested on an outer rod sleeve of the electric push rod (503), the bottom of an inner pressure rod of the electric push rod (503) is correspondingly connected with and provided with a pressure sensor (505), and the servo motor (501), the mechanical fine-adjustment device (502) and the pressure sensor (505) are connected with the intelligent display controller (7).
8. The multifunctional mattress softness and hardness tester according to claim 6, characterized in that: the mechanical fine-tuning device (502) comprises a fine-tuning motor and a disc type knob (506), the mechanical fine-tuning device (502) performs fine tuning according to required pressure or displacement, and the displacement of the electric push rod (503) is 1/12mm when the disc type knob (506) rotates for one circle; the electric push rod (503) is provided with scale scales, the scale scales take 1mm as one scale, and the stroke of the electric push rod is 350 mm.
9. The multifunctional mattress softness and hardness tester according to claim 1, characterized in that: the intelligent display control instrument (7) comprises a display screen (701), a starting switch (702), a lifting button (703) and a speed adjusting knob (704), wherein the lifting button (703) is provided with two steps of lifting and descending, and the speed adjusting knob (704) is provided with four steps of adjusting, namely 25mm/min, 50mm/min, 75mm/min and 100 mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886762.1A CN111965058A (en) | 2020-08-28 | 2020-08-28 | Multifunctional mattress hardness tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886762.1A CN111965058A (en) | 2020-08-28 | 2020-08-28 | Multifunctional mattress hardness tester |
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| Publication Number | Publication Date |
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| CN111965058A true CN111965058A (en) | 2020-11-20 |
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| CN202010886762.1A Pending CN111965058A (en) | 2020-08-28 | 2020-08-28 | Multifunctional mattress hardness tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113790918A (en) * | 2021-10-09 | 2021-12-14 | 嘉兴维特拉电气科技有限公司 | Test equipment for hardness of folding sofa bed |
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