Multifunctional chair

Abstract

The utility model discloses a multifunctional chair. The multifunctional chair comprises a support frame, a chair back and a chair seat, the chair seat is located above the supporting frame, and the chair back is located on one side of the supporting frame; a chair seat height adjusting assembly is arranged on the supporting frame, and the chair seat is installed on the chair seat height adjusting assembly and used for adjusting the height of the chair seat; handrail lifting mechanisms for mounting handrails are arranged on the two sides of the supporting frame respectively; the device is simple in structure and flexible to adjust, the appearance of the device is similar to that of a common seat, the psychological influence on a testee is reduced, and the hand and foot force application condition of the testee in the natural sitting and standing process can be measured. The device is controllable in manufacturing cost, wide in application range, and suitable for the fields of large-scale human body basic mechanics data acquisition, seat product research and development and design, medical rehabilitation index evaluation and the like.

Description

Technical Field

[0001] The utility model relates to a chair, in particular to a multifunctional chair. Background Art

[0002] Elderly people or patients with lower limb injuries are often sensitive to the height of seats and armrests when switching between sitting and standing positions. Therefore, it is necessary to design a chair with adjustable armrests or seat height to meet the personalized needs of the elderly or patients with lower limb injuries.

[0003] In addition, the current research on human joint mechanics during the transition from sitting to standing generally uses a foot mechanics measurement system to collect six-dimensional mechanical data of the human foot, a motion capture system to collect human joint motion data, and physics-related methods to calculate the human hip, knee, and ankle joint torques. Due to the use of a motion capture system, the subjects are required to wear special clothing and attach markers to key parts of the subject's body, making the measurement process cumbersome and inconvenient. Since only the mechanical data of the foot is measured, in the process of transitioning from sitting to standing, in order to avoid the influence of upper limb strength on the measurement of foot mechanical data, the subject cannot use hand assistance to stand up. However, the elderly or patients with lower limb injuries often need to use hand assistance during the transition from sitting to standing, and the distribution of hand and foot strength can be used as a quantitative reflection of the limb function of the elderly or patients with lower limb injuries. At present, there are few measurement devices for hand pressure and hip pressure during the transition from sitting to standing, and there is a lack of equipment that can simultaneously measure foot pressure, hand pressure, and hip pressure. The existing equipment cannot quickly and conveniently quantify the functional level of the upper and lower limbs of the human body, and there is a lack of relevant research on the joint force of the hands and feet. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and provide a multifunctional seat.

[0005] The utility model is realized by the following technical solutions:

[0006] A multifunctional chair, comprising a support frame 4, a chair back 1 and a seat 3; the seat 3 is located above the support frame 4, and the chair back 1 is located on one side of the support frame 4; a seat height adjustment assembly 2 is provided on the support frame 4, and the seat 3 is installed on the seat height adjustment assembly 2 for adjusting the height of the seat 3; armrest lifting mechanisms 5 for installing armrests 6 are respectively provided on both sides of the support frame 4;

[0007] The armrest lifting mechanism 5 includes an outer steel tube 8 and an inner steel tube 9 placed therein; the inner steel tube 9 can be extended and retracted in the outer steel tube 8;

[0008] The outer steel tube 8 is fixed to the support frame by a U-shaped buckle 10; the handrail 6 is installed on the upper end of the inner steel tube 9;

[0009] A plurality of positioning holes 11 are equidistantly provided on the side walls of the outer steel tube 8 and the inner steel tube 9; when the height of the handrail 6 needs to be adjusted, the inner steel tube 9 is stretched upward to the desired height, and then the positioning pin 12 is inserted into the positioning hole 11 to achieve locking positioning between the inner steel tube 9 and the outer steel tube 8, thereby adjusting the height of the handrail 6.

[0010] The seat height adjustment assembly 2 includes two movable beams 13 on the support frame 4; strip positioning grooves 14 are respectively provided in the middle of the four supporting legs of the support frame 4; the seat 3 is fixed on the two movable beams 13; bolts 15 are installed at the two ends of the movable beams 13, and the bolts 15 pass through the strip positioning grooves 14, and the bolts 15 can slide up and down in the strip positioning grooves 14; the position of the bolts 15 in the strip positioning grooves 14 is changed to achieve the height adjustment of the seat 3; the nut 16 is tightened to fix the movable beam 13, and the seat 3 is fixed at the desired height.

[0011] A foot pressure measurement module 7 is arranged on the front ground of the seat 3;

[0012] The seat 3 also includes a buttocks pressure measurement module 17;

[0013] The armrest 6 also includes a hand pressure measurement module 18;

[0014] The foot pressure measurement module 7, the hip pressure measurement module 17 and the hand pressure measurement module 18 are respectively installed with pressure sensors, each of which is connected to a multi-channel digital signal transmission module 20 via a signal line 19, and the multi-channel digital signal transmission module 20 is connected to a computer 22 via a data line 21;

[0015] The built-in pressure sensor of the foot pressure measurement module 7 collects the foot pressure signal, transmits it to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve;

[0016] The pressure sensor built into the buttocks pressure measurement module 17 collects the buttocks pressure signal, transmits it to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve;

[0017] The pressure sensor built into the hand pressure measurement module 18 collects the hand pressure signal, transmits it to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve.

[0018] The foot pressure measurement module 7 includes a base plate 23 , a pedal 24 , and four pressure sensors located between the base plate 23 and the pedal 24 ; the four pressure sensors are arranged around the base plate 23 and the pedal 24 , respectively.

[0019] The base plate 23 and the pedal 24 are rectangular flat plate structures.

[0020] The chair back 1 is in the form of a curved surface.

[0021] Compared with the prior art, the utility model has the following advantages and effects:

[0022] The armrest lifting mechanism 5 of the utility model comprises an outer steel tube 8 and an inner steel tube 9 placed therein; the inner steel tube 9 can be extended and retracted inside the outer steel tube 8; the outer steel tube 8 is fixed to the support frame by a U-shaped buckle 10; the armrest 6 is installed on the upper end of the inner steel tube 9; a plurality of positioning holes 11 are equidistantly provided on the side walls of the outer steel tube 8 and the inner steel tube 9; when it is necessary to adjust the height of the armrest 6, the inner steel tube 9 is stretched upward to the required height, and then the positioning pin 12 is inserted into the positioning hole 11 to achieve locking and positioning between the inner steel tube 9 and the outer steel tube 8, thereby adjusting the height of the armrest 6; this structural setting has a simple technical solution, is convenient and stable to adjust, and will not cause the inner steel tube 9 and the outer steel tube 8 to become loose and difficult to position due to loose clamping.

[0023] The utility model comprises two movable crossbeams 13 on the support frame 4; strip positioning grooves 14 are respectively provided in the middle of the four supporting legs of the support frame 4; the seat 3 is fixed on the two movable crossbeams 13; bolts 15 are installed at the two ends of the movable crossbeams 13, and the bolts 15 pass through the strip positioning grooves 14, and the bolts 15 can slide up and down in the strip positioning grooves 14; the position of the bolts 15 in the strip positioning grooves 14 is changed to achieve the height adjustment of the seat 3; the nut 16 is tightened to fix the movable crossbeams 13, and then the seat 3 is fixed at the required height; this structure makes good use of the original crossbeam and supporting leg structure of the support frame 4, realizes the free adjustment of the height of the seat 3, and has the advantages of saving labor and materials and convenient adjustment.

[0024] The utility model measures the hand pressure, hip pressure and foot pressure simultaneously during the transition from sitting to standing, and can be used to quantify the division of labor of hand and foot force, quantify the functional level of upper and lower limbs of the human body, and quantify the rehabilitation status of upper and lower limbs of patients.

[0025] The utility model has an appearance similar to that of a normal chair, which is beneficial to reducing the psychological impact on the subject and can realize the measurement of the force applied by the hands and feet of the subject in the process of naturally sitting down and standing up.

[0026] The utility model does not need to use a motion capture system, has no requirements on the clothes of the test subjects, adopts a non-intrusive method for measurement, and can measure as soon as the test subject arrives or leaves, with high measurement efficiency.

[0027] The production cost of the utility model is controllable and the application scope is wide, and it is suitable for fields such as large-scale basic human body mechanics data collection, chair product research and development design, and medical rehabilitation index evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the multifunctional seat of the utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the armrest lifting mechanism installed on the support frame.

[0030] Figure 3 A schematic diagram of the structure of a seat height adjustment component mounted on a support frame.

[0031] Figure 4 This is a schematic diagram of the substrate and pedal structure of the foot pressure measurement module.

[0032] Figure 5 It is a schematic diagram of the specific structure of the seat and the seat height adjustment component.

[0033] Figure 6 It is a schematic diagram of the specific structure of the handrail and the handrail lifting mechanism.

[0034] Figure 7 The diagram is a schematic diagram of the electrical connection between the multifunctional seat and the foot pressure measurement module, hip pressure measurement module, hand pressure measurement module and other systems. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with specific embodiments.

[0036] Example

[0037] like Figure 1-7 The utility model discloses a multifunctional chair, comprising a support frame 4, a chair back 1 and a seat 3; the seat 3 is located above the support frame 4, and the chair back 1 is located at one side of the support frame 4; the chair back 1 can be designed as a curved surface structure.

[0038] The support frame 4 is provided with a seat height adjustment assembly 2, and the seat 3 is mounted on the seat height adjustment assembly 2 for adjusting the height of the seat 3; armrest lifting mechanisms 5 for mounting armrests 6 are respectively provided on both sides of the support frame 4;

[0039] The armrest lifting mechanism 5 includes an outer steel tube 8 and an inner steel tube 9 placed therein; the inner steel tube 9 can be extended and retracted in the outer steel tube 8;

[0040] The outer steel tube 8 is fixed to the support frame by a U-shaped buckle 10; the handrail 6 is installed on the upper end of the inner steel tube 9;

[0041] A plurality of positioning holes 11 are equidistantly provided on the side walls of the outer steel tube 8 and the inner steel tube 9; when the height of the handrail 6 needs to be adjusted, the inner steel tube 9 is stretched upward to the desired height, and then the positioning pin 12 is inserted into the positioning hole 11 to achieve locking positioning between the inner steel tube 9 and the outer steel tube 8, thereby adjusting the height of the handrail 6.

[0042] There are about 20 positioning holes 11 with a spacing of 18 mm. The spacing of the positioning holes 11 determines that the height of the handrail 6 can be adjusted in a single step of 18 mm.

[0043] The seat height adjustment assembly 2 includes two movable beams 13 on the support frame 4; strip positioning grooves 14 are respectively provided in the middle of the four supporting legs of the support frame 4; the seat 3 is fixed on the two movable beams 13; bolts 15 are installed at the two ends of the movable beams 13, and the bolts 15 pass through the strip positioning grooves 14, and the bolts 15 can slide up and down in the strip positioning grooves 14; the position of the bolts 15 in the strip positioning grooves 14 is changed to achieve the height adjustment of the seat 3; the nut 16 is tightened to fix the movable beam 13, and the seat 3 is fixed at the desired height.

[0044] A foot pressure measurement module 7 is arranged on the front ground of the seat 3;

[0045] The seat 3 also includes a buttocks pressure measurement module 17;

[0046] The armrest 6 also includes a hand pressure measurement module 18;

[0047] The foot pressure measurement module 7, the hip pressure measurement module 17 and the hand pressure measurement module 18 are respectively installed with pressure sensors, each of which is connected to a multi-channel digital signal transmission module 20 via a signal line 19, and the multi-channel digital signal transmission module 20 is connected to a computer 22 via a data line 21;

[0048] The built-in pressure sensor of the foot pressure measurement module 7 collects the foot pressure signal, transmits it to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve;

[0049] The pressure sensor built into the buttocks pressure measurement module 17 collects buttocks pressure signals, transmits them to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve.

[0050] The hip pressure measurement module 17 includes four pressure sensors, which can be arranged equidistantly between the seat 3 and the movable crossbeam 13 .

[0051] The pressure sensor built into the hand pressure measurement module 18 collects the hand pressure signal, transmits it to the multi-channel digital signal transmission module 20 through the signal line 19, and the computer 22 records the foot pressure curve.

[0052] The hand pressure measurement module 18 includes four pressure sensors, which can be arranged at the connection between the inner steel tube 9 and the handrail 6 respectively.

[0053] The foot pressure measurement module 7 includes a substrate 23, a pedal 24, and four pressure sensors located between the substrate 23 and the pedal 24; the four pressure sensors are respectively arranged around the substrate 23 and the pedal 24. The substrate 23 and the pedal 24 are rectangular flat plate structures.

[0054] As described above, the present utility model can be implemented well.

[0055] The implementation methods of the present invention are not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A multifunctional chair, comprising a support frame (4), a chair back (1) and a seat (3); the seat (3) is located above the support frame (4), and the chair back (1) is located on one side of the support frame (4); characterized in that: The support frame (4) is provided with a seat height adjustment component (2), and the seat (3) is mounted on the seat height adjustment component (2) for adjusting the height of the seat (3); armrest lifting mechanisms (5) for mounting armrests (6) are respectively provided on both sides of the support frame (4); The handrail lifting mechanism (5) comprises an outer steel tube (8) and an inner steel tube (9) disposed therein; the inner steel tube (9) can be extended and retracted within the outer steel tube (8); The outer steel tube (8) is fixed to the support frame via a U-shaped buckle (10); the handrail (6) is mounted on the upper end of the inner steel tube (9); A plurality of positioning holes (11) are equidistantly provided on the side walls of the outer steel tube (8) and the inner steel tube (9); when the height of the handrail (6) needs to be adjusted, the inner steel tube (9) is stretched upward to the required height, and then the positioning pins (12) are inserted into the positioning holes (11) to achieve locking and positioning between the inner steel tube (9) and the outer steel tube (8), thereby adjusting the height of the handrail (6).

2. The multifunctional seat according to claim 1, characterized in that: The seat height adjustment assembly (2) comprises two movable crossbeams (13) on a support frame (4); strip-shaped positioning grooves (14) are respectively provided in the middle of four supporting legs of the support frame (4); the seat (3) is fixed on the two movable crossbeams (13); bolts (15) are installed at the two ends of the movable crossbeam (13), and the bolts (15) pass through the strip-shaped positioning grooves (14). The bolts (15) can slide up and down in the strip-shaped positioning grooves (14); the position of the bolts (15) in the strip-shaped positioning grooves (14) is changed to achieve height adjustment of the seat (3); the nut (16) is tightened to fix the movable crossbeam (13), thereby fixing the seat (3) at a desired height.

3. The multifunctional seat according to claim 1, characterized in that: A foot pressure measurement module (7) is arranged on the ground surface in front of the seat (3); The chair seat (3) further comprises a buttocks pressure measurement module (17); The armrest (6) further comprises a hand pressure measurement module (18); Pressure sensors are installed inside the foot pressure measurement module (7), the hip pressure measurement module (17) and the hand pressure measurement module (18), respectively. Each pressure sensor is connected to a multi-channel digital signal transmission module (20) via a signal line (19), and the multi-channel digital signal transmission module (20) is connected to a computer (22) via a data line (21); The built-in pressure sensor of the foot pressure measurement module (7) collects the foot pressure signal and transmits it to the multi-channel digital signal transmission module (20) through the signal line (19), and the computer (22) records the foot pressure curve; The pressure sensor built into the buttocks pressure measurement module (17) collects the buttocks pressure signal and transmits it to the multi-channel digital signal transmission module (20) through the signal line (19), and the buttocks pressure curve is recorded by the computer (22); The built-in pressure sensor of the hand pressure measurement module (18) collects the hand pressure signal and transmits it to the multi-channel digital signal transmission module (20) through the signal line (19), and the hand pressure curve is recorded by the computer (22).

4. The multifunctional seat according to claim 3, characterized in that: The foot pressure measurement module (7) comprises a base plate (23), a pedal (24), and four pressure sensors located between the base plate (23) and the pedal (24); the four pressure sensors are arranged around the base plate (23) and the pedal (24), respectively.

5. The multifunctional seat according to claim 4, characterized in that: The base plate (23) and the pedal (24) are rectangular flat plate structures.

6. The multifunctional seat according to claim 1, characterized in that: The chair back (1) is in the form of a curved surface.

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