Zero-gravity multifunctional electric chair
By equipping the electric chair with leg support airbags, head adjustment mechanism and airbag massage system, the problem of poor zero-gravity effect of existing electric office chairs is solved, providing a more realistic zero-gravity experience and comfort.
Patent Information
- Application Number
- CN202422711284.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing electric office chairs lack true zero-gravity adjustment function, resulting in a poor user experience.
A zero-gravity multifunctional electric chair has been designed. By setting up leg support airbags, head adjustment mechanism, backrest adjustment mechanism and airbag massage system, comprehensive adjustment of leg support, head support and backrest tilt angle can be achieved, providing a more realistic zero-gravity experience.
It achieves a more realistic zero-gravity experience, meets the diverse needs of users, relieves fatigue of the legs, head and waist, and improves comfort and functionality.
Smart Images
Figure CN223380266U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of furniture, in particular to a zero-gravity multifunctional electric chair. Background Art
[0002] An office chair refers to various types of chairs used for convenience in daily work and social activities. In a narrower sense, an office chair refers to a reclining chair used by people to perform desk work while seated. An office chair generally consists of casters, legs, gas rods, a chassis, a seat, armrests, a seat-back connection, a backrest, a lumbar pillow, and a headrest. Existing office chairs typically offer functions such as movement, rotation, backrest adjustment, and leg support. As living standards continue to improve, people's expectations for office chairs are also increasing, and electrically adjustable office chairs are becoming increasingly popular. However, existing electric office chairs are generally limited to electrically deployable leg rests and backrest adjustment; few offer "zero-gravity" adjustments. Even so-called "zero-gravity" sofas on the market only achieve "zero-gravity" by adjusting the angle. This is not very effective in practice and fails to provide users with a truly authentic "zero-gravity" experience. Utility Model Content
[0003] The purpose of the utility model is to provide a zero-gravity multifunctional electric chair, aiming to solve the technical problems in the prior art of electric chairs having poor zero-gravity effect and insufficient user experience.
[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 installed on the chair frame, a leg rest installed on the first adjustment end of the zero-gravity adjustment mechanism, and a backrest installed on the second adjustment end, the zero-gravity adjustment mechanism being used to adjust the extension or contraction of the leg rest and to adjust the inclination angle of the backrest; a first airbag is provided below 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 provided 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 installed on the backrest, the lower end of the adjustment frame is hinged to the lower end of the fixing frame, and 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. The second airbag can support 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 rebound 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, the fixed sliding box is mounted on the backrest, 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 that 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 that can be clamped in the wavy grooves of the wavy side walls. Pulling the headrest up and down can make the clamping parts clamped in different wavy grooves.
[0009] Preferably, the backrest is further 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 further 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 is installed on the chair frame, a seat cushion is installed on the seat, the front end of the seat cushion is hinged to the front end of the seat, a third airbag is provided between the seat and the seat cushion, and the third airbag is inflated and deflated by an air pump device.
[0012] Preferably, armrest plates are installed on both sides of the chair frame, and an armrest soft bag is installed on the upper end of the armrest plate. A fourth air bag is provided in the armrest soft bag, and the fourth air bag 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 utility model 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 and tilt angle are combined to provide the user with a more realistic zero-gravity experience and achieve a better use effect. In addition, in the sitting state (i.e., the leg rest is retracted and the backrest is upright), the user can also independently control the air pump device to inflate the first airbag, and support the legs after inflation to relieve leg fatigue; the head adjustment mechanism can also be independently controlled 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, have more functions, and are more practical. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.
[0017] Figure 1 This is a schematic diagram of the structure of the electric chair of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the electric chair of the utility model in another state;
[0019] Figure 3 This is a schematic diagram of the assembly structure of the backrest and head adjustment mechanism of the utility model;
[0020] Figure 4 This is a schematic diagram of the exploded structure of the head adjustment mechanism of the present utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the adjustment frame of the utility model;
[0022] Figure 6 This is a schematic diagram of the assembly structure of the fixed sliding box and the sliding block of the utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the electric chair of the utility model in the saddle state with the armrests removed;
[0024] Figure 8 This is a schematic diagram of the assembly structure of the chair frame, seat plate, leg rest, first airbag and seat cushion of the utility model;
[0025] Figure 9 This is a schematic diagram of the assembly structure of the chair frame and zero-gravity adjustment mechanism of the utility model;
[0026] Figure 10 This is a structural diagram of the zero gravity adjustment mechanism of the utility model.
[0027] In the accompanying drawings: 1-chair frame, 11-base, 12-main rod, 13-seat frame, 2-zero gravity adjustment mechanism, 21-leg support drive mechanism, 211-first drive motor, 212-first screw, 213-first mobile shell, 22-leg support telescopic mechanism, 221-first connecting cross bar, 222-left hinge assembly, 223-right hinge assembly, 23-backrest drive mechanism, 24-backrest adjustment mechanism, 241-second connecting cross bar, 242-left adjustment member , 243-right adjustment part, 3-leg rest, 4-backrest, 5-first airbag, 6-headrest, 7-head adjustment mechanism, 71-second airbag, 72-fixed frame, 721-first hook, 73-adjustment frame, 731-second hook, 75-fixed slide box, 751-wave side wall, 76-moving slider, 8-top lumbar 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 embodiments described 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 making creative efforts 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications 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 for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can 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 mounted 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 the tilt angle of the backrest 4, thereby achieving a 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 mounted on the first adjustment end, and the leg rest 3 is extended or contracted by the first adjustment end. When the leg rest 3 is extended, it can support the user's legs; the backrest 4 is mounted on the second adjustment end, and the tilt angle of the backrest 4 is adjusted by the second adjustment end. When the backrest 4 is tilted backward, it can support the user's back, allowing the user to be in a semi-reclining 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 experience.
[0033] For further information, see Figure 8 A first airbag 5 is provided below the leg rest 3, and the first airbag 5 is inflated and deflated by an air pump 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 the angle in the zero-gravity state, by controlling the air pump device to inflate the first airbag 5, 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 through tilting of angles. However, this technical solution, by providing a first airbag 5 and a head adjustment mechanism 7, realizes the combination of leg airbag support and headrest 6 support with tilt angle, giving users a more realistic zero-gravity experience and achieving better use effects. In addition, in a sitting state (i.e., the leg rest 3 is retracted and the backrest 4 is upright), the user can also independently control the air pump device to inflate the first airbag 5, and support the legs after inflation to relieve leg fatigue; similarly, the head adjustment mechanism 7 can be independently controlled to enable the headrest 6 to 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 all independent of each other, so they can meet the diverse needs of users, with more functions and greater 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). The fixed frame 72 is mounted on the backrest 4. 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. The rebound connector has one end connected to the fixed frame 72 and the other end 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 an air pump. Under normal conditions, the second airbag 71 is in a non-inflated state. The adjustment frame 73 is pulled back toward the fixed frame 72 by the rebound connector, and the headrest 6 is in a non-supported state. When the air pump inflates the second airbag 71, the second airbag 71 expands and rotates forward relative to the hinge between the fixed frame 72 and the adjustment frame 73, thereby supporting the headrest 6. When the second airbag 71 deflates, the adjustment frame 73 returns to its normal position due to the pullback of the resilient connector and the absence of the second airbag 71. In this embodiment, the head adjustment mechanism 7 relies on the inflation of the second airbag 71 to propel the headrest 6 upward, while the restoring position relies on the pullback of the resilient connector itself. Therefore, the propping up and restoring of the headrest 6 can be achieved simply by inflating and deflating the second airbag 71 through the air pump. This simplifies the structure of the head adjustment mechanism 7, reduces manufacturing costs, and facilitates control over 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 the spring 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, pulling 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, providing the first hook 721 and the second hook 731 on the fixing frame 72 and the adjusting frame 73, respectively, 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 slider 76. The fixed sliding box 75 is mounted on the backrest 4, and the movable slider 76 is mounted on the fixed sliding box 75 so as to be slidable up and down. The movable slider 76 is connected to the fixed frame 72. When the movable slider 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 achieving height adjustment of the headrest 6. The height adjustment of the headrest 6 can be achieved by setting the fixed sliding box 75 and the movable slider 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 6The fixed sliding box 75 is a box-shaped structure with a vertically extending groove defined on its surface adjacent to the movable slider 76. Two wavy sidewalls 751 are positioned within the fixed sliding box 75, facing each other and spaced apart. The main body of the movable slider 76 is located within the fixed sliding box 75, between the two wavy sidewalls 751. The movable slider 76 also extends outward through the groove in the fixed sliding box 75, where it connects to the fixed frame 72. The movable slider 76 has latches on both sides that engage the grooves in the wavy sidewalls 751. When the headrest 6 needs to be raised, the headrest 6 is pulled upward, and the headrest 6, adjustment frame 73, fixed frame 72, and sliding block move upward relative to the fixed sliding box 75 and the backrest 4. The locking portion on the sliding block disengages the original groove of the wavy side wall 751 and moves into another groove above. After raising the headrest 6, the headrest 6 is released, and the groove of the wavy side wall 751 will engage the locking portion of the movable slider 76, thereby fixing the movable slider 76, fixed frame 72, adjustment frame 73, and 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 downward to the desired position and then released. The structure of the fixed sliding box 75 and movable slider 76 is arranged in this way, making the structure of the head adjustment mechanism 7 simpler, the manufacturing cost lower, and the user can adjust it more conveniently and quickly.
[0039] See also Figure 1 、 Figure 2 and Figure 7 The backrest 4 is also provided with a lumbar airbag 8 for supporting the waist, and the lumbar airbag 8 is inflated and deflated by an air pump device. The lumbar airbag 8 can provide lumbar support to the user by inflation, and can also provide the user with a lumbar massage function by continuous inflation and deflation to relieve lumbar fatigue. In addition, the user can also obtain the best support effect by controlling the pressure of the lumbar 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 lumbar airbag 8 can be inflated to support the user's waist, allowing the user to experience the zero-gravity state more realistically.
[0040] See also Figure 1 、 Figure 2 and Figure 7The backrest 4 is also equipped with back massage airbags 9 for back massage. These airbags are inflated and deflated by a pumping device, massaging the user's back. The backrest 4 is equipped with multiple back massage airbags 9, which massage the user's back through inflation and deflation. At least four back massage airbags 9 are arranged vertically and horizontally. Since the back is relatively large, the multiple back massage airbags 9 increase the coverage area and enhance comfort. These multiple back massage airbags 9 can simulate various massage techniques, such as kneading, pinching, and tapping. Users can adjust the massage mode and intensity via the remote control for a personalized massage experience. The back massage mode and intensity can be adjusted via the control panel or remote control, allowing users to choose from a variety of massage methods, including kneading, tapping, and vibration. This multifunctional electric chair is ideal for a variety of settings, including home, office, and leisure. It significantly enhances comfort and well-being for users who sit for long periods of time. Especially for those experiencing fatigue and stress, the back massage airbags 9 can relieve back fatigue and improve 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 to 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 lumbar airbag 8, and the back massage airbag 9 are all inflated and deflated by the same air pump device, that is, one air pump device can independently control the inflation or deflation of the second airbag 71, the top lumbar 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 lumbar airbag 8, and the back massage airbag 9 through an air pipe. This arrangement can simplify the structure and reduce costs; the second airbag 71, the top lumbar airbag 8, the back massage airbag 9, and the No. 1 air pump 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 lumbar airbag 8, and the back massage airbag 9 can be independently inflated and deflated by separate air pump devices.
[0042] See also Figure 7 and Figure 8The chair frame 1 is mounted with a seat panel 10, which is equipped with a seat cushion 110. The front end of the seat cushion 110 is hinged to the front end of the seat panel 10. A third airbag 120 is positioned between the seat panel 10 and the seat cushion 110, and is located at the rear of the seat panel 10 and the seat cushion 110. 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 supports the air cushion 110, causing the seat cushion 110 to rotate upward and forward relative to the hinge connection with the seat panel 10. When in a sitting position, the power chair can be adjusted to saddle mode by controlling the inflation of the third airbag 120. In saddle mode, the angle between the user's torso and thighs is maintained at 135 degrees, minimizing spinal stretching, intervertebral disc compression, and uneven stress. Current research suggests that a 135-degree angle between the torso and thighs is the healthiest sitting posture. In saddle mode, the pressure on the user's legs is dispersed, relieving leg and hip fatigue and helping the user naturally straighten their back. Furthermore, the third airbag 120 inflates, driving the seat cushion 110 upward, and can also assist in standing up, making it particularly user-friendly for some users. Of course, in zero-gravity mode, the third airbag 120 can be inflated with less air, allowing the user's hips to receive support, thus satisfying the zero-gravity experience desired by 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 second air pump (not shown in the figure) is installed on the lower end surface of the seat 10, and the second air pump is connected to the first airbag 5 and the third airbag 120 through air pipes. This arrangement can simplify the structure and reduce costs; the first airbag 5, the third airbag 120 and the second 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 panels 130 are mounted on both sides of the chair frame 1, and a soft armrest bag 140 is mounted on the upper end of the armrest panels 130. A fourth airbag (not shown) is located within the soft armrest bag 140, which is inflated and deflated by a pumping device. The fourth airbag is located within the soft armrest bag 140, and the inflation of the fourth airbag enables the soft armrest bag 140 to provide better support for the user's hands, thereby alleviating hand fatigue when using a mobile phone (such as playing games or 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 Figure 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 above the main rod 12. The seat board 10 is specifically installed on the seat frame 13.
[0047] Please refer to Figure 8 and Figure 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 Figure 9 , the leg rest drive mechanism 21 is installed on the seat frame 13 and 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 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 mechanismThe backrest drive mechanism 23 is mounted on the main rod 12, and the backrest adjustment mechanism 24 is movably mounted on the seat frame 13 and connected to the output end of the backrest drive mechanism 23. The backrest adjustment mechanism 24 is the second adjustment end of the zero gravity adjustment mechanism 2, so the backrest 4 is mounted on the backrest adjustment mechanism 24. When the backrest drive mechanism 23 drives the backrest adjustment mechanism 24 to rotate toward the front of the seat frame 13, the backrest adjustment 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 drive mechanism 23 drives the backrest adjustment mechanism 24 to rotate toward the rear of the seat frame 13, the backrest adjustment 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 drive mechanism 21 individually to independently control the leg rest 3 to be lifted or retracted; can also control the backrest drive mechanism 23 individually to independently adjust the angle of the backrest 4; can also control the leg rest drive mechanism 21 and the backrest drive 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 equipped with a leg rest drive mechanism 21, a leg rest telescopic mechanism 22, a backrest drive mechanism 23, and a backrest adjustment mechanism 24. This allows the leg rest 3 and backrest 4 to be independently controlled, meeting the need for independent adjustment of the leg rest 3 and backrest 4 during use. Furthermore, the provision 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 Figure 10 The leg support drive mechanism 21 includes a first drive motor 211, a first screw 212, and a first movable housing 213. The output end of the first drive motor 211 is connected to one end of the first screw 212, driving the first screw 212 to rotate. The first movable housing 213 is sleeved on the first screw 212 and threadedly connected to the first screw 212. The first drive motor 211 is mounted on the seat frame 13. The end of the first movable housing 213 away from the first drive motor 211 is connected to the leg support telescopic mechanism 22. Rotation of the first drive motor 211 drives the first screw 212 to rotate about its central axis. Rotation of the first screw 212 drives the first movable housing 213 to move relative to the first screw 212 in a vertical direction of the first screw 212. The first drive motor 211 can be controlled to rotate forward and reverse, so the first screw 212 can also rotate forward or reverse. The first movable housing 213 is movable in both directions under the action of the first screw 212, thereby driving the leg support telescopic mechanism 22 to extend or retract.
[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 and is used to drive 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 rotate forward and reverse, 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 Figure 10 Furthermore, the leg support retractable 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. 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, ensuring the stability of the electric chair adjustment.
[0054] See also Figure 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 drive 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 423 and the right adjusting member 243. The backrest drive mechanism 23 can pull the second connecting crossbar 241 forward or push it backward. When the backrest drive 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 drive mechanism 23 pushes the second connecting crossbar 241 backward, the left and right adjusting members 242 and 243 rotate forward synchronously, thereby reducing the inclination angle of the backrest 4 relative to the seat frame 13. The backrest adjustment mechanism 24, by providing the left and right adjusting members 242 and 243, allows for smoother adjustment of the backrest 4. The second connecting crossbar 241 enables synchronous adjustment of the left and right adjusting members 242 and 243, requiring only a single backrest drive mechanism 23. This not only reduces costs but also improves synchronization. The second connecting crossbar 241 also enhances the structural stability of the left and right adjusting members 242 and 243, ensuring the stability of the electric chair's 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 transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application 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 by: 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 the tilt angle of the backrest (4); a first air bag (5) is provided 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 provided 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 rebound connector. 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 rebound connector 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. When the second airbag (71) is inflated, it can support the headrest (6).
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 rebound connecting member is a spring, and the 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) so as to be slidable 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. The movable sliding block (76) is located between the two wavy side walls (751). Both sides of the movable sliding block (76) are provided with clamping portions that can be clamped in the wavy grooves of the wavy side walls (751). The clamping portions 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 user's back.
8. The zero-gravity multifunctional electric chair according to claim 1, characterized in that: A seat plate (10) is mounted on the chair frame (1), a seat cushion (110) is mounted 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 provided 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), wherein 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), and 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), and the backrest (4) is mounted on the backrest adjustment mechanism (24).