Zero-gravity multifunctional electric chair
By designing zero gravity adjustment mechanism and airbag support on the electric office chair, the problem that existing electric office chairs cannot achieve true zero gravity feeling is solved, achieving better usage effect and user comfort.
Patent Information
- Application Number
- CN202411575504.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-01-07
AI Technical Summary
The existing electric office chairs lack effective zero gravity adjustment function and cannot bring users a real zero gravity feeling.
A multi-functional electric chair is designed, adopting a zero-gravity adjustment mechanism, including telescopic and tilt adjustment of the leg support and backrest, combined with airbag support and head adjustment mechanism, independent support and adjustment of the legs and head through a pumping device. , meet the diversity needs of users.
It achieves a more realistic zero gravity feeling, relieves the fatigue of the legs and head, has independent functions, meets the needs of diversity, and is more practical.
Smart Images
Figure CN119257381A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of furniture, in particular to a zero-gravity multifunctional electric chair. Background Art
[0002] Office chairs refer to various chairs equipped for the convenience of work in daily work and social activities; in a narrow sense, office chairs refer to chairs with backrests that people sit on when they work on the desk in a sitting position. Office chairs generally include casters, chair legs, gas rods, chassis, seat, armrests, seat back connection, chair back, lumbar pillow, headrest and other structures. Existing office chairs usually have functions such as movement, rotation, backrest adjustment, and leg support. With the continuous improvement of people's living standards, people's requirements for office chairs are getting higher and higher, and electrically adjustable office chairs are becoming more and more popular. However, existing electric office chairs are generally limited to electrically unfolding leg rests and adjusting backrests, and there are few "zero gravity" state adjustment functions; even the so-called "zero gravity" sofas on the market are limited to achieving the "zero gravity" state as much as possible by adjusting the angle, and the actual effect is not good, and it cannot bring users a more realistic "zero gravity" experience. Summary of the invention
[0003] The purpose of the present invention is to provide a zero-gravity multifunctional electric chair, aiming to solve the technical problems in the prior art that the zero-gravity effect of the electric chair is poor and the user experience is not realistic enough.
[0004] To achieve the above-mentioned objectives, the present invention proposes a zero-gravity multifunctional electric chair, comprising a chair frame, a zero-gravity adjustment mechanism is installed on the chair frame, a leg rest is installed on the first adjustment end of the zero-gravity adjustment mechanism, and a backrest is installed on the second adjustment end, the zero-gravity adjustment mechanism is used to adjust the extension or contraction of the leg rest and adjust the inclination angle of the backrest; a first airbag is arranged under the leg rest, and the first airbag is inflated and deflated by an air pump device; a headrest is installed on the backrest, and a head adjustment mechanism is arranged on the backrest behind the headrest, and the head adjustment mechanism can drive the headrest to prop up.
[0005] Preferably, the head adjustment mechanism includes a second airbag, a fixing frame, an adjustment frame and a rebound connector, the fixing frame is mounted on the backrest, the lower end of the adjustment frame is hinged to the lower end of the fixing frame, the two ends of the rebound connector are respectively connected to the fixing frame and the adjustment frame, the second airbag is located between the fixing frame and the adjustment frame, the second airbag is inflated and deflated by an air pump device, and the second airbag can prop up the headrest when inflated.
[0006] Preferably, the fixing frame is provided with a first hook portion, the adjusting frame is provided with a second hook portion, the resilient connecting member is a spring, and two ends of the spring are respectively hooked on the first hook portion and the second hook portion.
[0007] Preferably, the head adjustment mechanism further comprises a fixed sliding box and a movable sliding block, wherein the fixed sliding box is mounted on the backrest, and the movable sliding block is mounted on the fixed sliding box so as to be slidable up and down, and the movable sliding block is connected to the fixing frame.
[0008] Preferably, the fixed sliding box is provided with wavy side walls which are opposite and spaced apart, the movable sliding block is located between the two wavy side walls, and both sides of the movable sliding block are provided with clamping parts which can be clamped in the wavy grooves of the wavy side walls, and the clamping parts can be clamped in different wavy grooves by pulling the headrest up and down.
[0009] Preferably, the backrest is also provided with a waist-supporting airbag for supporting the waist, and the waist-supporting airbag is inflated and deflated by an air pump device.
[0010] Preferably, the backrest is also provided with a back massage airbag for massaging the back, and the back massage airbag is inflated and deflated by an air pump device to massage the user's back.
[0011] Preferably, a seat plate is installed on the chair frame, a seat cushion is installed on the seat plate, a front end of the seat cushion is hinged to the front end of the seat plate, a third air bag is provided between the seat plate and the seat cushion, and the third air bag is inflated and deflated by an air pump device.
[0012] Preferably, armrest plates are installed on both sides of the chair frame, a soft armrest bag is installed on the upper end of the armrest plate, a fourth airbag is arranged in the soft armrest bag, and the fourth airbag is inflated and deflated by an air pump device.
[0013] Preferably, the chair frame comprises a base, a main rod and a seat frame, wherein the main rod is mounted on the base, and the seat frame is arranged on the main rod and located above the main rod;
[0014] The zero gravity adjustment mechanism includes a leg rest driving mechanism, a leg rest telescopic mechanism, a backrest driving mechanism and a backrest adjustment mechanism. The leg rest driving mechanism is installed on the seat frame, the leg rest telescopic mechanism is movably installed on the seat frame and connected to the output end of the leg rest driving mechanism, and the leg rest is installed at one end of the leg rest telescopic mechanism close to the front of the seat frame; the backrest driving mechanism is installed on the main rod, the backrest adjustment mechanism is movably installed on the seat frame and connected to the output end of the backrest driving mechanism, and the backrest is installed on the backrest adjustment mechanism.
[0015] The present invention provides a zero-gravity multifunctional electric chair, which has at least the following beneficial effects: by providing a first airbag and a head adjustment mechanism, the leg airbag support and the headrest support are combined with the tilt angle, which can bring a more realistic zero-gravity feeling to the user and achieve a better use effect. In addition, in a sitting state (i.e., the leg rest is retracted and the backrest is upright), the user can also control the air pump device to inflate the first airbag separately, and support the legs after inflation to relieve leg fatigue; the head adjustment mechanism can also be controlled separately to make the headrest better support the user's head to relieve head fatigue. The three functions of angle adjustment, inflation and deflation of the first airbag, and headrest support are all independent of each other, so they can meet the diverse needs of users, with more functions and stronger practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of the structure of the electric chair of the present invention;
[0018] Figure 2 It is a schematic diagram of the structure of the electric chair of the present invention in another state;
[0019] Figure 3 It is a schematic diagram of the assembly structure of the backrest and head adjustment mechanism of the present invention;
[0020] Figure 4 It is a schematic diagram of the exploded structure of the head adjustment mechanism of the present invention;
[0021] Figure 5 It is a structural schematic diagram of the adjustment frame of the present invention;
[0022] Figure 6 It is a schematic diagram of the assembly structure of the fixed sliding box and the sliding block of the present invention;
[0023] Figure 7 It is a schematic diagram of the structure of the electric chair of the present invention in the saddle state after the armrests are removed;
[0024] Figure 8 It is a schematic diagram of the assembly structure of the chair frame, the seat plate, the leg support, the first airbag and the seat cushion of the present invention;
[0025] Fig. 9 It is a schematic diagram of the assembly structure of the chair frame and the zero gravity adjustment mechanism of the present invention;
[0026] Fig.10It is a structural schematic diagram of the zero gravity adjustment mechanism of the present invention.
[0027] In the attached drawings: 1-chair frame, 11-base, 12-main rod, 13-seat frame, 2-zero gravity adjustment mechanism, 21-leg support driving mechanism, 211-first driving motor, 212-first screw rod, 213-first movable shell, 22-leg support telescopic mechanism, 221-first connecting cross bar, 222-left hinge assembly, 223-right hinge assembly, 23-backrest driving mechanism, 24-backrest adjustment mechanism, 241-second connecting cross bar, 242-left adjustment member , 243-right adjusting part, 3-leg support, 4-backrest, 5-first airbag, 6-headrest, 7-head adjustment mechanism, 71-second airbag, 72-fixed frame, 721-first hook, 73-adjusting frame, 731-second hook, 75-fixed sliding box, 751-wave side wall, 76-moving sliding block, 8-top waist airbag, 9-back massage airbag, 10-seat board, 110-seat cushion, 120-third airbag, 130-armrest board, 140-armrest soft bag.
[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0032] See also Figures 1 to 8 A zero-gravity multifunctional electric chair comprises a chair frame 1, a zero-gravity adjustment mechanism 2, a leg rest 3, a backrest 4, a first airbag 5, a headrest 6 and a head adjustment mechanism 7. The chair frame 1 is the basic support part of the electric chair, and the zero-gravity adjustment mechanism 2 is installed on the chair frame 1. The zero-gravity adjustment mechanism 2 is used to adjust the extension or contraction of the leg rest 3 and adjust the tilt angle of the backrest 4, so as to achieve the zero-gravity state of the electric chair. Specifically, the zero-gravity adjustment mechanism 2 has a first adjustment end and a second adjustment end. The leg rest 3 is installed on the first adjustment end, and the extension or contraction of the leg rest 3 is achieved through the first adjustment end. When the leg rest 3 is extended, the legs of the user can be supported; the backrest 4 is installed on the second adjustment end, and the tilt angle of the backrest 4 is adjusted through the second adjustment end. When the backrest 4 is tilted backward, the backrest 4 can support the back of the user, so that the user is in a semi-lying state. When the backrest 4 is tilted backward and the leg rest 3 is unfolded, the overall angle of the electric chair is the angle in the zero-gravity state, which can give the user a zero-gravity feeling.
[0033] For further information, see Figure 8 , a first airbag 5 is arranged below the leg rest 3, and the first airbag 5 is inflated and deflated by a pumping device. A headrest 6 is installed on the backrest 4, and the headrest 6 is located at the upper end of the backrest 4, so that it can correspond to the user's head during use; the backrest 4 is provided with a head adjustment mechanism 7 behind the headrest 6, and the head adjustment mechanism 7 can drive the headrest 6 to prop up. When the overall angle of the electric chair is an angle under zero gravity, the first airbag 5 is inflated by controlling the pumping device, so that the leg rest 3 corresponding to the first airbag 5 can support the user's thigh near the knee; and the headrest 6 is driven to prop up by the head adjustment mechanism 7 to provide better support for the user's head; thereby, the electric chair can achieve a better zero gravity effect from three aspects: tilt angle, leg airbag support, and headrest 6 propping up, giving the user a more realistic zero gravity experience.
[0034] Existing zero-gravity sofas and zero-gravity chairs only achieve zero-gravity by tilting the angle. However, this technical solution, by setting the first airbag 5 and the head adjustment mechanism 7, realizes the combination of leg airbag support and headrest 6 support and tilt angle, giving users a more realistic zero-gravity experience and achieving better use effect. In addition, in the sitting state (i.e., the leg support 3 is contracted and the backrest 4 is vertical), the user can also control the pump device to inflate the first airbag 5 separately, and support the legs after inflation to relieve leg fatigue; the head adjustment mechanism 7 can also be controlled separately to make the headrest 6 better support the user's head to relieve head fatigue. The three functions of angle adjustment, inflation and deflation of the first airbag 5, and support of the headrest 6 are independent of each other, so they can meet the diverse needs of users, with more functions and stronger practicality.
[0035] See also Figure 3 and Figure 4 The head adjustment mechanism 7 includes a second airbag 71, a fixed frame 72, an adjustment frame 73 and a rebound connector (not shown in the figure). The fixed frame 72 is installed on the backrest 4, and the lower end of the adjustment frame 73 is hinged to the lower end of the fixed frame 72, and the adjustment frame 73 is located in front of the fixed frame 72. One end of the rebound connector is connected to the fixed frame 72, and the other end is connected to the adjustment frame 73. The second airbag 71 is located between the fixed frame 72 and the adjustment frame 73, and the second airbag 71 is inflated and deflated by the pumping device. Under normal conditions, the second airbag 71 is in a non-inflated state, and the adjustment frame 73 is pulled back toward the fixed frame 72 under the action of the rebound connector, and the headrest 6 is in a non-supported state. When the pumping device inflates the second airbag 71, the second airbag 71 is inflated and expanded, and the adjustment frame 73 is pushed against the adjustment frame 73 to rotate forward relative to the hinge of the two in a direction away from the fixed frame 72, so that the adjustment frame 73 can support the headrest 6. When the second airbag 71 is deflated, the adjustment frame 73 returns to the normal state due to the pullback of the rebound connection and the absence of the second airbag 71. In this embodiment, the head adjustment mechanism 7 drives the headrest 6 to be propped up by the inflation of the second airbag 71, and the state recovery depends on the pullback effect of the rebound connection itself. Therefore, the propping up and restoring of the headrest 6 only requires the second airbag 71 to be inflated and deflated by the air pump device. The head adjustment mechanism 7 has a simple structure, low manufacturing cost, and is easy to control the degree of propping up the headrest 6.
[0036] Specifically, see Figure 4 and Figure 5 , a first hook 721 is provided at the upper end of the fixing frame 72, and a corresponding second hook 731 is also provided near the upper end of the adjusting frame 73. The rebound connector is a spring, one end of which is hooked on the second hook 731, and the other end is hooked on the second hook 731. The spring itself has elastic force. When the second airbag 71 is inflated, the adjusting frame 73 rotates forward relative to the hinge point between it and the fixing frame 72, and stretches the spring; when the second airbag 71 is deflated, the spring rebounds and pulls the adjusting frame 73 to rotate backward relative to the hinge point between it and the fixing frame 72. Using a commonly used spring as a rebound connector can simplify the structure and save costs; in addition, the first hook 721 and the second hook 731 are respectively provided on the fixing frame 72 and the adjusting frame 73, which can facilitate the installation of the spring and ensure the stability of the structure.
[0037] See also Figure 4, the head adjustment mechanism 7 also includes a fixed sliding box 75 and a movable sliding block 76. The fixed sliding box 75 is installed on the backrest 4, and the movable sliding block 76 is installed on the fixed sliding box 75 so as to slide up and down, and the movable sliding block 76 is connected to the fixed frame 72. When the movable sliding block 76 slides up and down on the fixed sliding box 75, the fixed frame 72, the adjustment frame 73, and the headrest 6 also slide up and down, thereby realizing the height adjustment of the headrest 6. The height adjustment of the headrest 6 can be realized by setting the fixed sliding box 75 and the movable sliding block 76, so that the headrest 6 not only has a supporting function, but also has a height adjustment function, which is convenient for the needs of different users, ensures that the headrest 6 can adapt to all users, and ensures that the headrest 6 can support the user's head.
[0038] Specifically, see Figure 4 and Figure 6 The fixed sliding box 75 is a box-shaped structure, and a groove extending in the vertical direction is provided on a side close to the movable sliding block 76; two wavy side walls 751 are provided in the fixed sliding box 75, and the two wavy side walls 751 are arranged opposite to each other and spaced apart. The main body of the movable sliding block 76 is located in the fixed sliding box 75 and between the two wavy side walls 751; the movable sliding block 76 also extends outward through the groove on the fixed sliding box 75, and the extended part is connected to the fixed frame 72. The movable sliding block 76 has a clamping part on both sides, which can be clamped in the groove of the wavy side wall 751. When the headrest 6 needs to be raised, the headrest 6 is pulled up, and the headrest 6, the adjustment frame 73, the fixed frame 72, and the sliding block move upward relative to the fixed sliding box 75 and the backrest 4. The clamping part on the sliding block is separated from the original groove of the wave side wall 751 and moves to another groove above. After raising the headrest 6, the headrest 6 is released, and the groove of the wave side wall 751 will clamp the clamping part of the movable slider 76, thereby fixing the movable slider 76, the fixed frame 72, the adjustment frame 73 and the headrest 6 at a certain height, thereby achieving the height adjustment of the headrest 6. Similarly, when the headrest 6 needs to be lowered, the headrest 6 is pulled down to the desired position and then the headrest 6 is released. The structure of the fixed sliding box 75 and the movable slider 76 is arranged in this way, so that the structure of the head adjustment mechanism 7 is simpler, the manufacturing cost is lower, and the user can also adjust it more conveniently and quickly.
[0039] See also Figure 1 , Figure 2 and Figure 7 The backrest 4 is also provided with a waist-supporting airbag 8, which is inflated and deflated by a pumping device. The waist-supporting airbag 8 can provide waist support to the user by being inflated, and can also provide waist massage function to the user by continuously inflating and deflation, thereby relieving waist fatigue. In addition, the user can also obtain the best support effect by controlling the pressure of the waist-supporting airbag 8. When the electric chair is in a zero-gravity state, in addition to the support of the legs by the first airbag 5 and the support of the headrest 6, the waist-supporting airbag 8 can also be inflated to support the user's waist, so that the user can feel the zero-gravity state more realistically.
[0040] See also Figure 1 , Figure 2 and Figure 7 , the backrest 4 is also provided with a back massage airbag 9 for massaging the back, and the back massage airbag 9 is inflated and deflated by a pumping device to massage the user's back. The backrest 4 is provided with multiple back massage airbags 9, and the back massage is achieved by inflating and deflation of the back massage airbags 9. At least four back massage airbags 9 are provided on the backrest 4, and different back massage airbags 9 are arranged at intervals up and down and left and right. Since the back area is large, multiple back massage airbags 9 are provided to increase the coverage area of the back massage and improve the comfort. Multiple back massage airbags 9 can imitate a variety of massage techniques such as kneading, pinching, and tapping; the user can adjust the massage mode and strength through the remote control to enjoy a personalized massage experience. The massage mode and strength of the back can be set through the control panel or the remote control, and the user can choose different massage methods such as kneading, tapping, and vibration. The multifunctional electric chair is very suitable for various scenes such as home, office, and leisure. For users who need to sit for a long time, it can greatly improve the comfort and health experience. Especially in the case of fatigue and high pressure, the back massage airbag 9 can relieve the fatigue of the waist and back and improve the overall sitting comfort. On the other hand, when the electric chair is in a zero-gravity state, the back massage airbags 9 can also be controlled to remain inflated, providing airbag support for the user's back, allowing the user to experience the zero-gravity state more realistically.
[0041] In this embodiment, the second airbag 71, the top waist airbag 8 and the back massage airbag 9 are all inflated and deflated by the same pumping device, that is, one pumping device can independently control the inflation or deflation of the second airbag 71, the top waist airbag 8 and the back massage airbag 9. An air pump No. 1 (not shown in the figure) is installed on the backrest 4, and the air pump No. 1 is connected to the second airbag 71, the top waist airbag 8 and the back massage airbag 9 through an air pipe. Such an arrangement can simplify the structure and reduce costs; the second airbag 71, the top waist airbag 8, the back massage airbag 9 and the air pump No. 1 are all on the backrest 4, so the air pipe layout can also be reduced. Of course, in other embodiments, the second airbag 71, the top waist airbag 8 and the back massage airbag 9 can be independently inflated and deflated by a separate pumping device.
[0042] See also Figure 7 and Figure 8, a seat board 10 is installed on the chair frame 1, and a cushion 110 is installed on the seat board 10, and the front end of the cushion 110 is hinged with the front end of the seat board 10. A third airbag 120 is arranged between the seat board 10 and the cushion 110, and the third airbag 120 is located at the rear position of the seat board 10 and the cushion 110, and the third airbag 120 is inflated and deflated by a pumping device. When the pumping device inflates the third airbag 120, the third airbag 120 can support the air cushion 110, so that the cushion 110 is rotated and lifted upward and forward relative to the hinge between it and the seat board 10. In the sitting state, by controlling the inflation of the third airbag 120, the electric chair can be adjusted to the saddle mode; in the saddle mode, the angle between the user's trunk and thigh can be helped to maintain a sitting posture of 135°, which can minimize the stretching of the spine, the compression of the intervertebral disc and the uneven force; and the sitting posture with the trunk and thigh at 135° is currently considered to be the healthiest sitting posture by current research. In saddle mode, it can disperse the pressure on the user's legs, relieve fatigue in the legs and buttocks, and help the user's back naturally straighten. In addition, the third airbag 120 is inflated to drive the seat cushion 110 to rise, which can also play a role in assisting standing up, which is particularly friendly to some users. Of course, in the zero-gravity state, the third airbag 120 can also be filled with less gas, so that the user's buttocks can also be supported by the airbag, satisfying the zero-gravity body feeling of different users.
[0043] In this embodiment, the first airbag 5 and the third airbag 120 are both inflated and deflated by the same air pumping device, that is, one air pumping device can independently control the inflation or deflation of the first airbag 5 and the third airbag 120. A No. 2 air pump (not shown in the figure) is installed on the lower end surface of the seat plate 10, and the No. 2 air pump is connected to the first airbag 5 and the third airbag 120 through air pipes. Such an arrangement can simplify the structure and reduce costs; the first airbag 5, the third airbag 120 and the No. 2 air pump are all on the backrest 4, so the air pipe layout can also be reduced. Of course, in other embodiments, the first airbag 5 and the third airbag 120 can be independently inflated and deflated by separate air pumping devices.
[0044] See also Figure 1 and Figure 2 , armrest boards 130 are installed on both sides of the chair frame 1, and an armrest soft bag 140 is installed on the upper end of the armrest board 130. A fourth airbag (not shown in the figure) is arranged in the armrest soft bag 140, and the fourth airbag is inflated and deflated by a pumping device. The fourth airbag is arranged in the armrest soft bag 140, and the inflation of the fourth airbag can make the armrest soft bag 140 provide better support for the user's hand, so that the user can relieve hand fatigue when using a mobile phone (such as playing games, watching videos).
[0045] In this embodiment, the fourth airbag can share the second air pump with the first airbag 5 and the third airbag 120, that is, the second air pump can also be used to inflate and deflate the fourth airbag, thereby reducing costs and simplifying the structure. Of course, in other embodiments, the fourth airbag can also be inflated and deflated through an independent air pumping device.
[0046] Please refer to Figure 8 and Fig. 9 , the chair frame 1 includes a base 11, a main rod 12 and a seat frame 13. The base 11 is used to be placed on the ground to support other components of the electric chair. The main rod 12 is installed on the base 11. The main rod 12 has a "U" - shaped structure, the lower cross - bar of which is horizontally placed relative to the ground, and the middle position is installed on the base 11. The seat frame 13 is installed on the main rod 12 and is located above the main rod 12. The seat board 10 is specifically installed on the seat frame 13.
[0047] Please refer to Figure 8 and Fig. 9 , the zero - gravity adjustment mechanism 2 includes a leg rest drive mechanism 21, a leg rest telescopic mechanism 22, a backrest drive mechanism 23 and a backrest adjustment mechanism 24.
[0048] Please refer to Fig. 9 , the leg rest drive mechanism 21 is installed on the seat frame 13 and is located at the rear end. The leg rest drive mechanism 21 is used to drive the leg rest telescopic mechanism 22 to extend or contract. The leg rest telescopic mechanism 22 is movably installed on the seat frame 13 and is located at the front end. The leg rest telescopic mechanism 22 is connected to the output end of the leg rest drive mechanism 21. The front end of the leg rest drive mechanism 21 is the first adjustment end of the zero - gravity adjustment mechanism 2. Therefore, the leg rest 3 is installed at one end of the leg rest telescopic mechanism 22 close to the front of the seat frame 13. When the leg rest drive mechanism 21 drives the leg rest telescopic mechanism 22 to extend, the leg rest telescopic mechanism 22 can drive the leg rest 3 to lift, so that the leg rest 3 can support the user's legs. When the leg rest drive mechanism 21 drives the leg rest telescopic mechanism 22 to contract, the leg rest telescopic mechanism 22 can drive the leg rest 3 to retract.
[0049] Please refer to Fig. 9, the backrest driving mechanism 23 is mounted on the main rod 12, and the backrest adjusting mechanism 24 is movably mounted on the seat frame 13 and connected to the output end of the backrest driving mechanism 23. The backrest adjusting mechanism 24 is the second adjusting end of the zero gravity adjusting mechanism 2, so the backrest 4 is mounted on the backrest adjusting mechanism 24. When the backrest driving mechanism 23 drives the backrest adjusting mechanism 24 to rotate forward of the seat frame 13, the backrest adjusting mechanism 24 can drive the backrest 4 to fall backward (increase the angle between the backrest 4 and the seat frame 13). When the backrest driving mechanism 23 drives the backrest adjusting mechanism 24 to rotate backward of the seat frame 13, the backrest adjusting mechanism 24 can drive the backrest 4 to rotate forward (decrease the angle between the backrest 4 and the seat frame 13). In actual application, the user can control the leg rest driving mechanism 21 individually to independently control the lifting or retraction of the leg rest 3; can also control the backrest driving mechanism 23 individually to independently adjust the angle of the backrest 4; can also control the leg rest driving mechanism 21 and the backrest driving mechanism 23 at the same time to simultaneously adjust the leg rest 3 bracket and the backrest 4.
[0050] In this embodiment, the zero gravity adjustment mechanism 2 is provided with a leg rest driving mechanism 21, a leg rest telescopic mechanism 22, a backrest driving mechanism 23 and a backrest adjustment mechanism 24, so that the leg rest 3 and the backrest 4 can be controlled separately, meeting the requirement of separately adjusting the leg rest 3 and the backrest 4 during use. Moreover, the arrangement of the leg rest telescopic mechanism 22 and the backrest adjustment mechanism 24 simplifies the structure of the telescopic or adjustment mechanism.
[0051] See also Fig.10 The leg support driving mechanism 21 includes a first driving motor 211, a first screw rod 212 and a first movable housing 213. The output end of the first driving motor 211 is connected to one end of the first screw rod 212 and is used to drive the first screw rod 212 to rotate. The first movable housing 213 is sleeved on the first screw rod 212 and is threadedly connected to the first screw rod 212. The first driving motor 211 is installed on the seat frame 13. One end of the first movable housing 213 away from the first driving motor 211 is connected to the leg support telescopic mechanism 22. The first driving motor 211 rotates, which can drive the first screw rod 212 to rotate around its axis. When the first screw rod 212 rotates, it can drive the first movable housing 213 to move relative to the first screw rod 212 along the vertical direction of the first screw rod 212. The first driving motor 211 can realize forward and reverse rotation through control, so the first screw rod 212 can also rotate forward or reverse. The first movable housing 213 can move in two directions under the action of the first screw rod 212, thereby realizing the extension or contraction of the leg support telescopic mechanism 22.
[0052] It is easy to understand that in this embodiment, the structure of the backrest drive mechanism 23 is the same as that of the leg support drive mechanism 21. The backrest drive mechanism 23 includes a second drive motor (not indicated in the figure), a second screw (not indicated in the figure) and a second movable shell (not indicated in the figure). The output end of the second drive motor is connected to one end of the second screw for driving the second screw to rotate. The second movable shell is sleeved on the second screw and is threadedly connected to the second screw. The second drive motor is mounted on the main rod 12. The end of the second movable shell away from the second drive motor is connected to the mounting seat, specifically connected to the second mounting portion. The rotation of the second drive motor can drive the second screw to rotate around its axis, and when the second screw rotates, it can drive the second movable shell to move relative to the second screw along the vertical direction of the second screw. The second drive motor can be controlled to achieve forward and reverse rotation, so the second screw can also rotate forward or reverse, and the second movable housing can move in two directions under the action of the second screw; since the second movable housing and the mounting seat are relatively fixed, the relative movement between the second movable housing and the second drive motor is the movement of the second drive motor relative to the main rod 12; the operation of the second drive motor can drive the backrest adjustment mechanism 24 to rotate forward and backward, and finally adjust the angle of the backrest 4 bracket.
[0053] See also Fig.10 Further, the leg support telescopic mechanism 22 includes a first connecting cross bar 221, a left hinge assembly 222 and a right hinge assembly 223. The left hinge assembly 222 and the right hinge assembly 223 have the same structure and are symmetrically arranged, wherein the left hinge assembly 222 can be movably mounted on the left side of the seat frame 13, and the right hinge assembly 223 can be movably mounted on the right side of the seat frame 13. The first connecting cross bar 221 is connected to the output end of the leg support driving mechanism 21, and the two ends are respectively connected to the left hinge assembly 222 and the right hinge assembly 223. The leg support driving mechanism 21 can push the first connecting cross bar 221 forward or pull it backward. When the leg support driving mechanism 21 pushes the first connecting cross bar 221 forward, the left hinge assembly 222 and the right hinge assembly 223 extend synchronously, thereby lifting the leg support 3 bracket. When the leg support driving mechanism 21 pulls the first connecting cross bar 221 backward, the left hinge assembly 222 and the right hinge assembly 223 contract synchronously, thereby retracting the leg support 3 bracket. The leg support telescopic mechanism 22 makes the adjustment of the leg support 3 bracket more stable and smooth by setting the left hinge assembly 222 and the right hinge assembly 223. The synchronous adjustment of the left hinge assembly 222 and the right hinge assembly 223 can be achieved through the first connecting cross bar 221, and only one leg support driving mechanism 21 needs to be set, which not only reduces costs but also improves synchronization. The first connecting cross bar 221 can also improve the structural stability of the left hinge assembly 222 and the right hinge assembly 223 to ensure the stability of the electric chair adjustment.
[0054] See also Fig.10The backrest adjustment mechanism 24 includes a second connecting crossbar 241, a left adjusting member 242 and a right adjusting member 243. The left adjusting member 242 and the right adjusting member 243 have the same structure and are symmetrically arranged, wherein the left adjusting member 242 is rotatably mounted on the left side of the seat frame 13, and the right adjusting member 243 is rotatably mounted on the right side of the seat frame 13. The second connecting crossbar 241 is connected to the backrest driving mechanism 23, specifically, the second drive motor is mounted on the second connecting crossbar 241. The two ends of the second connecting crossbar 241 are respectively connected to the left adjusting member 243 and the right adjusting member 243. The backrest driving mechanism 23 can pull the second connecting crossbar 241 forward or push it backward. When the backrest driving mechanism 23 pulls the second connecting crossbar 241 forward, the left adjusting member 242 and the right adjusting member 243 rotate backward synchronously, thereby increasing the inclination angle of the backrest 4 relative to the seat frame 13. When the backrest driving mechanism 23 pushes the second connecting cross bar 241 backward, the left adjusting member 242 and the right adjusting member 243 rotate forward synchronously, thereby reducing the inclination angle of the backrest 4 relative to the seat frame 13. The backrest adjusting mechanism 24 makes the adjustment of the backrest 4 more stable and smooth by setting the left adjusting member 242 and the right adjusting member 243. The synchronous adjustment of the left adjusting member 242 and the right adjusting member 243 can be achieved through the second connecting cross bar 241, and only one backrest driving mechanism 23 needs to be set, which not only reduces costs but also improves synchronization. The second connecting cross bar 241 can also improve the structural stability of the left adjusting member 242 and the right adjusting member 243 to ensure the stability of the electric chair adjustment.
[0055] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A zero-gravity multifunctional electric chair, characterized in that: The invention comprises a chair frame (1), wherein a zero-gravity adjustment mechanism (2) is installed on the chair frame (1), a leg rest (3) is installed on the first adjustment end of the zero-gravity adjustment mechanism (2), and a backrest (4) is installed on the second adjustment end, wherein the zero-gravity adjustment mechanism (2) is used to adjust the extension or contraction of the leg rest (3) and to adjust the inclination angle of the backrest (4); a first air bag (5) is arranged below the leg rest (3), and the first air bag (5) is inflated and deflated by an air pump device; a headrest (6) is installed on the backrest (4), and a head adjustment mechanism (7) is arranged on the backrest (4) behind the headrest (6), and the head adjustment mechanism (7) can drive the headrest (6) to prop up.
2. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: The head adjustment mechanism (7) comprises a second airbag (71), a fixing frame (72), an adjustment frame (73) and a resilient connecting member, wherein the fixing frame (72) is mounted on the backrest (4), the lower end of the adjustment frame (73) is hinged to the lower end of the fixing frame (72), the two ends of the resilient connecting member are respectively connected to the fixing frame (72) and the adjustment frame (73), the second airbag (71) is located between the fixing frame (72) and the adjustment frame (73), the second airbag (71) is inflated and deflated by an air pump device, and the second airbag (71) can prop up the headrest (6) when inflated.
3. The zero-gravity multifunctional electric chair according to claim 2, characterized in that: The fixing frame (72) is provided with a first hook portion (721), the adjusting frame (73) is provided with a second hook portion (731), the resilient connecting member is a spring, and two ends of the spring are respectively hooked on the first hook portion (721) and the second hook portion (731).
4. The zero-gravity multifunctional electric chair according to claim 2, characterized in that: The head adjustment mechanism (7) further comprises a fixed sliding box (75) and a movable sliding block (76), wherein the fixed sliding box (75) is mounted on the backrest (4), and the movable sliding block (76) is mounted on the fixed sliding box (75) in a manner that it can slide up and down, and the movable sliding block (76) is connected to the fixing frame (72).
5. The zero-gravity multifunctional electric chair according to claim 4, characterized in that: The fixed sliding box (75) is provided with wavy side walls (751) that are opposite and spaced apart from each other, the movable sliding block (76) is located between the two wavy side walls (751), and both sides of the movable sliding block (76) are provided with clamping parts that can be clamped in the wavy grooves of the wavy side walls (751), and the clamping parts can be clamped in different wavy grooves by pulling the headrest (6) up and down.
6. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: The backrest (4) is also provided with a waist-supporting airbag (8) for supporting the waist, and the waist-supporting airbag (8) is inflated and deflated by an air pump device.
7. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: The backrest (4) is also provided with a back massage airbag (9) for massaging the back. The back massage airbag (9) is inflated and deflated by an air pump device to massage the back of the user.
8. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: A seat plate (10) is installed on the chair frame (1), a seat cushion (110) is installed on the seat plate (10), a front end of the seat cushion (110) is hinged to a front end of the seat plate (10), a third air bag (120) is provided between the seat plate (10) and the seat cushion (110), and the third air bag (120) is inflated and deflated by an air pump device.
9. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: Armrest plates (130) are installed on both sides of the chair frame (1), and an armrest soft bag (140) is installed on the upper end of the armrest plate (130). A fourth air bag is arranged in the armrest soft bag (140), and the fourth air bag is inflated and deflated by an air pump device.
10. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: The chair frame (1) comprises a base (11), a main rod (12) and a seat frame (13), wherein the main rod (12) is mounted on the base (11), and the seat frame (13) is arranged on the main rod (12) and is located above the main rod (12); The zero gravity adjustment mechanism (2) comprises a leg support driving mechanism (21), a leg support telescopic mechanism (22), a backrest driving mechanism (23) and a backrest adjustment mechanism (24); the leg support driving mechanism (21) is mounted on the seat frame (13); the leg support telescopic mechanism (22) is movably mounted on the seat frame (13) and connected to the output end of the leg support driving mechanism (21); the leg support (3) is mounted on the end of the leg support telescopic mechanism (22) close to the front of the seat frame (13); the backrest driving mechanism (23) is mounted on the main rod (12); the backrest adjustment mechanism (24) is movably mounted on the seat frame (13) and connected to the output end of the backrest driving mechanism (23); the backrest (4) is mounted on the backrest adjustment mechanism (24).