Sitting posture assisting chair

Abstract

A sitting posture assisting chair solves the problems that when people work and study in a sitting posture for a long time, over fatigue of the spine is easily caused, and even diseases occur. According to the technical scheme, a chest pad (17) is arranged at the chest position, a head support (23) and a jaw support (18) are arranged at the head position, and an elbow support (26) is arranged at the elbow position; when a person sits forward to work and study, the chair back is adjusted to a proper forward leaning position by adjusting the chair back. At the moment, the chest pad, the jaw support, the head support and the elbow support can support the upper body and the arms of the body. The cervical vertebra, the thoracic vertebra, the lumbar vertebra and the arms of the upper limbs are all relaxed, so that the effects of correcting the sitting posture and saving labor are achieved, and a good prevention effect on myopia and spinal diseases is achieved. The chair can be widely applied to sitting posture workers and students.

Description

Technical Field

[0001] The invention relates to a chair, in particular to a power-assisted chair capable of alleviating fatigue during sitting work. Technical Background

[0002] At present, there are many types of chairs known to the public, such as massage chairs, boss chairs, student chairs, office chairs, computer chairs, etc. In terms of performance, they are mainly improved in terms of comfort, the ability to lie down and rest, and massage functions. However, there is no improvement in reducing fatigue when working in a sitting position. At present, many people work in a sitting position, such as in offices, IT industries, anchors, games, students, etc. Due to long-term sitting work and study, the lumbar spine, cervical spine, and eyes are overly fatigued, and even lesions occur. Therefore, the market urgently needs a new type of chair that can help sitting work and study, reduce fatigue, and make sitting work easier. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of existing chairs and provide a new type of chair that can help people who work and study in a sitting position and make sitting work easier.

[0004] The technical solution adopted by the present invention to solve the technical problem is as follows: a chest pad (17) is arranged at the chest position and connected to the chair back (8) through a shoulder connecting arm (19) and a waist connecting arm (13); a jaw support (18) is arranged at the chin position and connected to the upper part of the chest pad; a head support (23) is arranged at the forehead position and connected to the headrest (20) through a head support adjustment (21) and a head support pull rod (22); the chair back (8) and the seat plate (4) are rotatably connected by a chair back support (7) and a seat plate support (5) through an axle pin (6); a chair back adjustment support (10) is fixed to the rear of the seat plate and connected to the chair back limiter through a chair back pull rod (11), a pull rod adjustment (12) and a return spring (31); and the elbow support (26) is slidably connected to the elbow support (26) on the elbow support arm (25).

[0005] The beneficial effect of the present invention is that when a person sits and works in a forward leaning position, the chair back is adjusted to a suitable forward leaning position through the chair back positioner. At this time, the chair back positions the chest pad, the chin support, and the head support through the connecting arm, thereby supporting the upper body and the head of the person. The cervical vertebrae, the thoracic vertebrae, and the lumbar vertebrae of the upper limbs are all relaxed, thereby achieving the effect of maintaining a correct sitting posture and saving effort, and having a good preventive effect on myopia and spinal diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0007] Figure 1 is a side view of the present invention, Figure 2 This is the side view of the lumbar pad adjustment. Figure 3 This is the side view of the seat back adjustment structure. Figure 4 This is a view of the head support structure (A is the side view, B is the rear view). Figure 5 Rear view of the chest pad mechanism (non-operating state).

[0008] exist Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 Middle: 1 base frame, 2 pulley, 3 base frame connecting plate, 4 seat plate, 5 seat plate bracket, 6 axle pin, 7 backrest bracket, 8 backrest, 9 bracket adjustment, 10 adjustment bracket, 11 backrest pull rod, 12 pull rod adjustment, 13 waist connecting arm, 14 telescopic adjustment, 15 waist pad adjustment, 16 waist pad, 17 chest pad, 18 jaw support, 19 shoulder connecting arm, 20 headrest, 21 head support adjustment, 22 head support pull rod, 23 head support, 24 human body, 25 elbow support arm, 26 elbow support, 27 elbow arm support rod, 28 positioning wire, 29 waist pad connecting block, 30 positioning nut, 31 return spring, 32 pull rod ear, 33 backrest ear, 34 adjustment slider, 35 bracket fixing nut, 36 universal joint, 37 chest pad connecting block, 38 chest pad connecting hanging slot, 39 jaw support adjustment screw, 40 chest pad telescopic arm, 41 telescopic arm bracket. DETAILED DESCRIPTION

[0009] Depend on Figure 1 It can be seen that the pulley 2 is installed at the bottom of the base frame 1, and the upper side is connected to the seat plate 4 through the base frame connecting plate 3; the seat plate bracket 5 is installed at the upper rear position of the seat plate, and is connected to the seat back bracket 7 through the shaft pin 6. Figure 2 It can be seen that a lumbar pad connection block 29 is fixed to the middle position of the back of the lumbar pad 16, which is connected to the lumbar pad adjustment 15 through a positioning thread 28. The lumbar pad adjustment is connected to a fixed nut 30 fixed on the chair back, and the lumbar pad convexity is adjusted by rotating the lumbar pad adjustment 15: Figure 3 It can be seen that the adjustment slider 34 is installed on the backrest bracket 7 and the seat bracket 5 respectively, and the two adjustment sliders are connected by an axle pin. The bracket adjustment 9 is used to lock the telescopic length of the adjustment slider, and it is best to adjust it to the point where the body is not squeezed when the chair back is tilted forward. An adjustment bracket 10 is fixed to the bottom rear of the seat board 4, and a backrest ear 33 and a pull rod ear 32 are fixed to the bottom of the backrest, which are connected by an axle pin. The backrest pull rod 11 passes through the sliding long hole on the adjustment bracket 10, and two pull rod adjustments 12 are installed above and below the adjustment bracket and are threadedly connected to the backrest pull rod 11. A return spring 31 is installed under the adjustment bracket to pull the backrest 8 back to its original position; Figure 4As can be seen, Figure A is a side view of the head support 23 in working state, the head support rod 22 is pulled out from the headrest 20, and folded forward 90 degrees through the axle pin 6. One end of the head support adjustment 21 is sleeved on the front end of the head support rod, and the other end is connected to the back of the head support 23. The head support adjustment 21 can be adjusted forward and backward on the head support rod to fix the head support 23 in the best position in front of the forehead; Figure 5 This is a rear view of the chest pad mechanism in a non-working state. Four chest pad telescopic arms 40 are installed on the upper, lower, left and right sides of the chair back 8, and are fixedly connected to the chair back through axle pins 6, telescopic arm brackets 41, and bracket fixing screws 35. The front end of the chest pad telescopic arm is connected to the two chest pads 17 through telescopic adjustment 14, universal joint 36, shoulder connecting arm 19, waist connecting arm 13, and chest pad connecting block 37. When the chest pad is not in a working state, the chest pad telescopic arm 40 is retracted and erected upward, the shoulder connecting arm 19 and waist connecting arm 13 are rotated outward, and the chest pad is rotated inward, forming a neat Figure 5 State; chest pad 17, composed of two plates. The chest pad of the female sitting posture power-assisting chair should be hollowed out at the breast position. The inner edges of the two chest pads are provided with chest pad connecting hanging grooves 38, which are composed of cross-corresponding convex points and grooves. When the chest pad 17 is needed for assistance, the two chest pads are pulled in front of the chest, and the convex points and grooves of the chest pad connecting hanging grooves are inserted relative to each other to form a flat chest pad. When the upper body of the human body tilts forward to the set position, the pull rod adjustment 12 limits the forward tilt angle of the chair back through the chair back pull rod 11. The chair back 8 limits the chest pad through the shoulder connecting arm 19 and the waist connecting arm 13. At this time, the chest pad supports the upper body of the human body, so that the muscles of the spine and upper body can be relaxed, achieving the purpose of power assistance; the jaw support 18 is composed of two pieces (it can also be designed as one piece), which are respectively installed at the ends of the chest pad, and the jaw support adjustment screw 39 is used to regulate the distance between the jaw support and the human jaw. When you lower your head to a proper position, the chin support will support your chin, so that your cervical spine and neck muscles can relax, thereby reducing fatigue and playing a role of power assistance. According to personal needs, the head support and the chin support can be used simultaneously or separately; the rear end of the elbow support arm 25 is axially connected to the side of the chair back 8, and the front end is axially connected to the elbow support rod 27 fixed on the seat board. A sliding groove is provided on the elbow support arm, which is slidably connected to the elbow support 26, so that the elbow arm can be extended and retracted freely, playing a role of power assistance.

[0010] The four power-assisting parts are composed of: chest pad, chin support, head support, and elbow support. They can be used simultaneously, separately, or in combination according to personal work needs. Its working principle is: the upper body of the human body is fixed in a straight and correct sitting posture through the chair back and waist pad behind the human body and the chest pad, chin support, and head support in front. When the upper body of the human body leans forward to work, the chair back adjustment and the chair back pull rod will pull the chair back at the set forward tilt degree, and at the same time, the chair back and headrest will pull the chest pad, chin support, and head support through the connecting arm. At this time, the upper body of the human body will lean straight on the power-assisting parts, so that the spine and surrounding muscles can relax and rest; when the arm is retracted and extended, the elbow support will always support the arm to work, thereby achieving a labor-saving effect.

[0011] Another embodiment uses an intelligent robotic arm to replace the connecting arm of the chest pad, and each part is adjusted and automatically controlled, making it an all-round intelligent product.

[0012] The use of a sitting posture assisting chair can effectively prevent the occurrence of cervical, thoracic, lumbar, periarthritis of the shoulder, hunchback and myopia. It can be widely used by sitting workers and students in various industries.

Claims

1. A sitting posture booster chair, comprising a base frame (1), a seat plate (4), and a backrest (8), characterized in that A chest pad (17) is provided at the chest position and is connected to the chair back (8) through a shoulder connecting arm (19) and a waist connecting arm (13); a jaw support (18) is provided at the jaw position and is connected to the upper part of the chest pad; a head support (23) is provided at the forehead position and is connected to the headrest (20) through a head support pull rod (22) and a head support adjustment (21); and is slidably connected to an elbow support (26) on the elbow support arm (25).

Images