CN108741848B - Seat surface adjusting device for experiment chair - Google Patents
Seat surface adjusting device for experiment chair Download PDFInfo
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- CN108741848B CN108741848B CN201810763361.XA CN201810763361A CN108741848B CN 108741848 B CN108741848 B CN 108741848B CN 201810763361 A CN201810763361 A CN 201810763361A CN 108741848 B CN108741848 B CN 108741848B
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- seat surface
- seat
- iron plate
- frame
- height
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- 238000002474 experimental method Methods 0.000 title claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229910052742 iron Inorganic materials 0.000 claims abstract description 41
- 210000001364 upper extremity Anatomy 0.000 claims description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 11
- 238000011160 research Methods 0.000 abstract description 5
- 210000002414 leg Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 210000000689 upper leg Anatomy 0.000 description 3
- 210000001217 buttock Anatomy 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
Abstract
The application discloses a seat surface adjusting device for an experimental chair, which comprises a frame and a seat surface iron plate, wherein the seat surface iron plate is arranged on a seat surface of the frame; the seat surface iron plate is provided with a stepless adjusting structure unit for realizing height, angle, depth and/or shape. The size and shape adjustment of the application relates to the seat surface of the office chair, can realize stepless adjustment in height, angle and depth, meets the angle change of forward tilting, vertical and backward tilting, is more flexible and changeable, and is fully suitable for the experimental requirements of office chair design; when the functional design characteristics of the office chair are researched, the seat surface size and the shape experimental values are obtained more abundantly and comprehensively, so that the functional design research of the office chair is facilitated.
Description
Technical Field
The application belongs to the technical field of office furniture design, and particularly relates to a seat surface adjusting device for an experimental chair.
Background
The design of the size and the shape of office chairs on the market mostly stays on the past experience and the imitation reference, lacks scientific support of innovative research, and limits the investment of most enterprises on the manpower and financial resources of new products because of higher mold opening cost of each research and development of the enterprises, so that the update iteration speed of the new products of the office chairs is slow, and the design of really taking the comfort feeling of people into consideration is very little.
The existing experimental chair for office chair function design is mainly used for carrying out step-by-step adjustment aiming at the size, and an adjusting mode is not involved in the part of form adjustment, so that at present, the influence of the size of each functional structure of the research office chair on the sitting comfort of a human body is not flexible and comprehensive, and the influence of the form of each functional structure of the research office chair on the sitting comfort of the human body is relatively deficient.
Disclosure of Invention
The application aims to provide a seat surface adjusting device for an experimental chair, which can realize stepless adjustment of the size and the shape of a functional structure of an office chair seat surface, and aims to reduce the cost of researching new products of enterprises and improve the scientificity of researching the new products.
The application aims at realizing the following technical scheme:
the seat surface adjusting device for the experiment chair comprises a frame and a seat surface iron plate, wherein the seat surface iron plate is arranged on a seat surface of the frame; the seat surface iron plate is provided with a stepless adjusting structure unit for realizing height, angle, depth and/or shape.
The stepless regulation structure unit is a threaded hole arranged on the seat surface iron plate and a screw rod matched with the threaded hole for use.
The frame is a square iron frame, a front-back sliding locking mechanism is arranged on the frame, so that the depth of the seat surface support is adjusted, and a height adjusting mechanism of the seat surface support is arranged on the frame.
The height adjusting mechanism comprises a front leg square tube and a bidirectional screw seat surface adjusting piece; the height of the front end of the seat surface is adjusted by inserting a front leg square pipe into a front leg square pipe, and a hand wheel is used for tightening a locking position when the front end of the seat surface is adjusted to a required height; the height adjustment of the rear end of the seat surface adopts a bidirectional screw seat surface adjusting piece, and a punching part is respectively connected with the seat surface iron plate and the base and is fixed by matching with a small screw.
The stepless regulation structure units are provided with more than 3.
The front end of the seat surface iron plate is movably connected with a front leg square tube.
The rear end of the seat surface iron plate is connected with a punching part.
The beneficial effects are that: compared with the prior art, the application has the following advantages:
1) The size adjustment relates to the seat surface of the office chair, can realize stepless adjustment in height, angle and depth, meets the angle change of forward tilting, vertical tilting and backward tilting, is more flexible and changeable, and is fully suitable for the experimental requirements of office chair design;
2) The shape adjustment relates to the seat surface of the office chair, can form any required shape, is stepless adjustment in adjustment, and can realize the fixation of covering materials and filling materials through strong magnetism and magic tapes;
3) The device makes when studying office chair function design characteristics, obtains more abundant comprehensive size, form experimental value to help office chair's function design research.
Drawings
FIG. 1 is a schematic structural view of a ferrous frame;
FIG. 2 is a schematic view of a seat surface adjustment device;
FIG. 3 is a schematic view of the structure of an experimental chair equipped with a seat adjusting device;
fig. 4 is a schematic illustration of a seat surface adjustment test.
Detailed Description
The application is further described below with reference to the accompanying drawings.
Example 1
The application relates to a seat surface adjusting device for an experimental chair, which mainly comprises a frame 1, a seat surface adjusting device 2 and a backrest. The seat surface adjusting device 2 is arranged on the seat surface of the frame 1, and a stepless adjusting structural unit for realizing the height, the angle, the depth and/or the shape is arranged on the seat surface adjusting device 2. The stepless adjusting structure unit arranged on the seat surface adjusting device 2 comprises a threaded hole and a screw H matched with the threaded hole.
As shown in fig. 1, the frame 1 is a square iron frame, a front-back sliding locking mechanism 6 is arranged on the frame, so that the depth of the backrest bracket is adjusted, and a vertical sliding locking mechanism 5 is arranged on the frame, so that the height of the backrest bracket is adjusted. The up-down sliding locking mechanism 5 comprises 2 small backrest square tubes A and 2 large backrest square tubes B, wherein the small backrest square tubes A can be sleeved into the large backrest square tubes B and are fixed through bolts, so that up-down sliding locking is realized. The front-back sliding locking mechanism 6 comprises 2 sliding rail bars D and 2 sliding rail seats E, wherein the sliding rail bars D are arranged on the sliding rail seats E and are fixed through bolts, so that front-back sliding locking is realized.
The square iron frame is used as a basic part of the whole experimental chair and is used for supporting and fixing all part adjusting devices, the iron frame structure can be designed into an assembling mode for convenient carrying, the iron frame structure is divided into three parts, each part can not be split any more, simple assembling can be realized between the parts, an iron pipe in the vertical direction is in the form of a large square pipe sleeved with a small square pipe, an up-down sliding locking mechanism is formed, and stepless adjustment in the height direction is conveniently realized through the principle design of nested sliding and compression locking; the sliding locking mechanism is formed by sliding rails back and forth, so that depth adjustment in a certain range is realized, and all adjustment uses hand wheels to fix positions.
As shown in fig. 2, the seat surface adjusting device comprises a seat surface iron plate G with uniform holes (threaded holes) and more than 3 stepless adjusting structural units arranged on the seat surface iron plate G; the stepless adjusting structure unit is a threaded hole arranged on the seat surface iron plate G and an adjustable screw H matched with the stepless adjusting structure unit. In order to facilitate connection with the device legs and adjustment of the height and angle of the seat surface, long screws are welded on two sides of the front end of the seat surface respectively and used for fixing left and right small square tubes F of the front legs, so that the small square tubes F of the front legs can rotate around the long screws at will, the transportation packaging space is saved, and the needed angle can be formed with an iron plate of the seat surface. A punching component I is welded at the rear end of the seat surface and is used for connecting and fixing the seat surface iron plate and the bidirectional screw seat surface adjusting piece.
According to the seat surface adjusting device, one end of the small bolt penetrating through the seat surface front leg small square tube is welded on the seat surface iron plate, so that the seat surface front leg small square tube can rotate around the fixed small bolt. The device comprises an up-down sliding locking mechanism, a bolt adjusting and fixing mechanism and a bidirectional screw adjusting mechanism. The seat front leg square tube and the seat front leg square tube in the square iron frame are assembled into an up-and-down sliding locking mechanism. The bolt adjusting and fixing mechanism is characterized in that a hole with threads is drilled on the seat surface iron plate, and bolts with matched sizes are screwed into the hole, so that any fixed height can be obtained. A double-hole connecting piece is welded at the center of the rear end of the seat surface iron plate and on the square iron frame base respectively, the connecting lines of the two double-hole connecting pieces in the vertical direction are perpendicular to the ground, two ends of the tubular screw rod are respectively provided with a hole, the three holes at the two ends are horizontally connected in sequence by pins respectively to form a tubular screw rod adjusting mechanism, the rear end of the seat surface iron plate is assembled with the square iron frame by the tubular screw rod adjusting mechanism, and the function of supporting the rear legs of the seat surface is achieved.
As shown in fig. 3, the height of the front end of the seat surface iron plate G is adjusted by inserting the front leg square tube F into the front leg square tube C and tightening the locking position by the hand wheel Q when the height is adjusted to a desired height, and the adjustment range of the front end height of the seat surface iron plate G is any position between 350mm and 500 mm. The height adjustment of the back end of the seat surface adopts a bidirectional screw seat surface adjusting piece R, a punching component I is used to be connected with a seat surface iron plate G and a base respectively, and is fixed by a small screw, so that the back end of the seat surface iron plate G is stably supported, when the height adjustment of the back end of the seat surface is needed, only the bidirectional screw seat surface adjusting piece R is required to be rotated, two screws in the bidirectional screw seat surface adjusting piece are reversely far away or mutually close, thus the change in height is achieved, and the adjustment range of the height of the back end of the seat surface iron plate G is any position of 350mm-600 mm.
The depth of the seat surface is adjusted by the back adjusting device through the front and back movement of the sliding rail, the hand wheel Q is used for locking, the depth adjusting range is affected by the range of the sliding rail, the range of the sliding rail is 30mm, and the specific depth change is also affected by the protrusion of the adjustable screw H.
The angle adjustment of the seat surface is realized according to the adjustment of the front end and the rear end of the seat surface, namely, the angle formed in the range of the adjustment of the front leg and the rear leg of the seat surface is the angle range of the seat surface, is a stepless adjustment range, and can realize forward tilting and backward tilting.
As shown in fig. 4, the adjustment of the curvature of the seat surface or the irregular recess can be achieved only by adjusting the screw protrusion of the stepless adjusting structural unit at each corresponding position.
In addition to dimensional and morphological adjustments, the device may perform a fixation of the facing material. A piece of cloth is fixed on the screw H by strong magnetism, and then the manufactured material is wrapped and fixed on the cloth by using a magic tape, so that the test can be performed.
Example 2
By using the device of example 1, experiments on the influence of the size of the staff chair on the sitting comfort in the forward leaning sitting posture were carried out, different seat heights, seat angles and seat depths were adjusted by using the experimental chair, the stress changes and comfort conditions of the waist, hip and leg in the forward leaning sitting posture of the staff were captured, and the size range of the seat and the waist pad suitable for the forward leaning sitting posture was found.
In this embodiment, the number of the total 5 influencing factors, the number of the levels is 5, so as to obtain the order of the influence of each factor on the comfort of the sitting surface and the comfort of the lumbar pad, and the optimal matching scheme among the 5 factors, so that an orthogonal experiment method is selected, and representative experimental points are selected from the level of the overall experiment to perform the experiment. According to the sitting comfort influence factors of the staff chair in the forward leaning sitting posture, the sitting surface height (A: 410-490 mm), the sitting surface angle (B: 12-0 degrees), the sitting depth (C: 360-400 mm), the lumbar pad height (D: 150-190 mm) and the lumbar pad angle (E: 12-0 degrees) are selected to carry out orthogonal experiments with 5 factors and 5 levels, and the results prove that: the seat height (a) has the greatest influence on the seat contact area, the seat average pressure, the lumbar pad maximum pressure and the thigh force, and is an important factor affecting the comfort system of the staff chair. The seat surface angle (B) has the greatest influence on the maximum pressure of the seat surface and the contact area of the waist pad, and has great influence on the local and overall fitting degree, the strength, the stability and the comfort degree in subjective evaluation, and the factor greatly influences the subjective comfort degree feeling of a user. The depth of sitting (C) has a great influence on the contact area of the seating surface, the buttocks stability and comfort, the waist stability and comfort, and the overall fit. The waist pad height (D) has a great influence on the maximum pressure of the waist pad, the position of the maximum pressure point of the waist pad, the thigh stability and the comfort level. The waist pad angle (E) has the greatest influence on the position of the maximum pressure point of the waist pad, the total pressure above the maximum pressure point and the total pressure below the maximum pressure point, has great influence on the average pressure, the waist receiving force and the overall comfort level of the waist pad, and the index of the waist pad body pressure distribution is greatly influenced by the factors.
Example 3
The device of the embodiment 1 is adopted to study the influence of the seat surface shape of the staff on the sitting comfort in the forward leaning sitting posture, and the aims are firstly to ensure that the shape of the human spine keeps a normal physiological curve, namely lumbar vertebra slight forward leaning, secondly to keep the stability and balance of the sitting posture, and the device has better body gravity center when the staff leans forward in the sitting posture, and thirdly to ensure that the pressure distribution of the seat surface is more reasonable, namely, better sitting comfort is obtained, the bearing of the buttocks and the legs is sufficient and the stress is balanced.
As shown in fig. 4, the seating surface morphology is taken into consideration from the front view of the seating surface front edge section and the left view of the seating surface center section. The size of the seat surface contact surface of the embodiment is designed to be 480mm, 4 factors are provided, and the seat surface contact surface has 3 levels respectively, so that the influence degree of each factor in the seat surface form on the sitting comfort and the influence conditions of different levels under the same factor are analyzed, and a healthier and comfortable seat surface form is obtained. Orthogonal experiments were chosen and performed using representative experimental points. The experimental dimensions of the staff chair are in reference to the experimental conclusion of example 2, and the seat surface shape factors influencing the sitting comfort are respectively the height H1 of the concave parts on the two sides of the seat surface (A is-10 to-30 mm), the height H2 of the central bulge on the front part of the seat surface (B is 10 to 30 mm), the horizontal distance L1 of the lowest point of the concave parts on the two sides of the seat surface (C is 60 to 180 mm), the longitudinal distance L2 of the bulge on the front end of the seat surface (D is 90 to 150 mm), and the orthogonal surface L is selected 18 (3 7 ) Orthogonal tests were performed at the 4 factor 3 level, and the results confirm that: the concave heights (A) on two sides of the seat surface have the largest influence on the contact area of the seat surface, the average pressure of the seat surface, the maximum pressure gradient and the average pressure gradient in the body pressure index, and have great influence on the hip stability, the thigh fitting degree waist comfort level, the overall comfort level and the like in the subjective evaluation index, so that the influence is an important factor affecting the comfort system of the staff chair.
Claims (3)
1. The seat surface adjusting device for the experiment chair is characterized by comprising a frame (1) and a seat surface iron plate (G), wherein the seat surface iron plate (G) is arranged on a seat surface of the frame (1); the seat iron plate (G) is provided with a stepless adjusting structure unit for realizing height, angle, depth and/or shape; the stepless adjusting structure unit is a threaded hole formed in the seat iron plate (G) and a screw rod matched with the threaded hole for use; the frame (1) is a square iron frame, a front-back sliding locking mechanism (6) is arranged on the frame, so that the depth of the seat surface bracket is adjusted, and a height adjusting mechanism of the seat surface bracket is arranged on the frame; the stepless regulation structure units are provided with more than 3 stepless regulation structure units; the front end of the seat surface iron plate (G) is movably connected with a front leg square tube (F); the rear end of the seat surface iron plate (G) is connected with a punching component (I).
2. The seat adjusting device for an experimental chair according to claim 1, wherein: the height adjusting mechanism comprises a front leg square tube (F) and a bidirectional screw seat surface adjusting piece (R); the front end of the seat surface is adjusted by inserting a front leg square tube (F) into a front leg square tube (C), and a hand wheel (Q) is used for tightening the locking position when the front end of the seat surface is adjusted to the required height; the height of the rear end of the seat surface is adjusted by adopting a bidirectional screw seat surface adjusting piece (R), and a punching component (I) is respectively connected with a seat surface iron plate (G) and a base and is fixed by matching with a small screw.
3. The seat adjusting device for an experimental chair according to claim 1, wherein: the front-back sliding locking mechanism (6) comprises a sliding rail strip (D) and a sliding rail seat (E), wherein the sliding rail strip (D) is arranged on the sliding rail seat (E) and is fixed through bolts, so that front-back sliding locking is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763361.XA CN108741848B (en) | 2018-07-11 | 2018-07-11 | Seat surface adjusting device for experiment chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763361.XA CN108741848B (en) | 2018-07-11 | 2018-07-11 | Seat surface adjusting device for experiment chair |
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| Publication Number | Publication Date |
|---|---|
| CN108741848A CN108741848A (en) | 2018-11-06 |
| CN108741848B true CN108741848B (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810763361.XA Active CN108741848B (en) | 2018-07-11 | 2018-07-11 | Seat surface adjusting device for experiment chair |
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| CN (1) | CN108741848B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662520B (en) * | 2019-02-21 | 2023-09-01 | 南京林业大学 | Performance test method of chair for children experiment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103005888A (en) * | 2012-12-06 | 2013-04-03 | 南京林业大学 | Experiment seat capable of bearing lower back parts of human bodies in different sitting postures synchronously |
| CN209058465U (en) * | 2018-07-11 | 2019-07-05 | 南京林业大学 | A kind of experimental chair seat surface regulating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100295354A1 (en) * | 2008-01-14 | 2010-11-25 | China Truer Ip | Chair adapted to adjust according to person's sitting-posture vertebral curve (i) |
| US9254042B2 (en) * | 2012-06-22 | 2016-02-09 | Michael V. Halliday | Backrest member including an adjustable platform for use with a chair |
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2018
- 2018-07-11 CN CN201810763361.XA patent/CN108741848B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103005888A (en) * | 2012-12-06 | 2013-04-03 | 南京林业大学 | Experiment seat capable of bearing lower back parts of human bodies in different sitting postures synchronously |
| CN209058465U (en) * | 2018-07-11 | 2019-07-05 | 南京林业大学 | A kind of experimental chair seat surface regulating device |
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| CN108741848A (en) | 2018-11-06 |
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