Single-motor zero-gravity leisure chair

Abstract

A rotating support comprises a pivoting rod, a first swing rod and a pedal driving rod, the pivoting rod is hinged to a supporting base, a push rod motor is connected between the pivoting rod and the supporting base and used for driving the pivoting rod to rotate, one end of the first swing rod is fixedly connected to the pivoting rod, and the other end of the first swing rod is fixedly connected to the pedal driving rod. The other end of the first swing rod is hinged to the seat frame, the second swing rod is hinged between the supporting base and the seat frame, and the first swing rod and the second swing rod are arranged in a spaced mode. The telescopic pedal assembly is hinged to the seat frame, and the pedal driving rod is hinged between the pivoting rod and the telescopic pedal assembly; the backrest is hinged to the seat frame, and the backrest connecting rod is hinged between the backrest and the supporting base. According to the scheme, adjustment of the zero-gravity state can be achieved through one push rod motor, the structure is simplified, use of parts is reduced, and therefore light weight and low cost of products are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of leisure chairs, in particular to a single-motor zero-gravity leisure chair. Background Art

[0002] With the continuous development of social economy, people's requirements for the quality of life are getting higher and higher, and the requirements for the comfort of seats are also getting higher and higher. For zero-gravity leisure chairs, when in the lying position, the angle between the seat cushion and the horizontal plane is required to be relatively large, and at the same time, the angle between the seat cushion and the backrest is also required to be relatively large. Cooperating with the stretching angles of the footrest and the backrest, the center of gravity of the human body is placed on the buttocks, and other parts of the body are not under pressure. At the same time, the foot position of the human body is higher than the heart position of the human body, so that the human body is in a completely relaxed state of zero gravity.

[0003] Most of the leisure chairs on the market use dual motors or triple motors, and the overall cost of the product is relatively high. And because these motors need to be installed, the internal structure of the leisure chair frame is relatively complex. There are also some new designs that use a single-motor method. For example, Chinese Patent CN202321869348.5 discloses a single-motor-driven zero-gravity leisure chair, but the footrest assembly it uses is a scissor-link mechanism. When the footrest is retracted under the seat, the footrest will not retract very flat, and there is no large foot space under the seat, and its structure is also relatively complex. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a single-motor zero-gravity leisure chair, which can realize the adjustment of the zero-gravity state with a single push-rod motor, simplifies the structure, reduces the use of parts, and thus realizes the light weight and low cost of the product.

[0005] The technical solution adopted by the utility model to solve its problems is:

[0006] A single-motor zero-gravity leisure chair, comprising: a support base, a seat frame, a telescopic footrest assembly, a backrest, a push-rod motor, a rotating bracket, a second swing rod, a backrest link, wherein,

[0007] The rotating bracket includes a pivot rod, a first swing rod, and a footrest drive rod. The pivot rod is hinged to the support base, and the push-rod motor is connected between the pivot rod and the support base. The push-rod motor is used to drive the pivot rod to rotate. One end of the first swing rod is fixedly connected to the pivot rod, and the other end of the first swing rod is hinged to the seat frame. The second swing rod is hinged between the support base and the seat frame, and the first swing rod and the second swing rod are arranged at intervals;

[0008] The telescopic footrest assembly is hinged to the seat frame, and the footrest drive rod is hinged between the pivot rod and the telescopic footrest assembly;

[0009] The backrest is hinged to the seat frame, and the backrest link is hinged between the backrest and the support base.

[0010] Further, a first connecting ear and a second connecting ear are fixedly arranged on the pivot rod. The first connecting ear is hinged to the push rod motor, and the second connecting ear is hinged to the foot pedal drive rod. The rotation axes between the first connecting ear and the push rod motor and between the second connecting ear and the foot pedal drive rod both deviate from the rotation axis between the pivot rod and the support base.

[0011] Further, there are two first swing rods. One ends of the two first swing rods are respectively fixedly connected to both ends of the pivot rod, and the other ends of the two first swing rods are respectively hinged to the left and right sides of the seat frame.

[0012] Further, there are two second connecting ears and two foot pedal drive rods. Each second connecting ear is respectively hinged to a corresponding foot pedal drive rod. The two second connecting ears are arranged at intervals relative to each other on both sides of the first connecting ear, and the two second connecting ears are located between the two first swing rods.

[0013] Further, the first connecting ear, the second connecting ear, the first swing rod and the pivot rod are integrally welded.

[0014] Further, the support base includes feet, a rotating shaft and a bottom bracket. The bottom bracket includes two mounting side plates, a connecting round tube, a third connecting ear for hinging the push rod motor, a fourth connecting ear for hinging the backrest link, and a rotating shaft sleeve. One end of the rotating shaft is connected to the feet, the other end of the rotating shaft is connected to the rotating shaft sleeve, the connecting round tube is fixedly connected to the rotating shaft sleeve, the two mounting side plates are respectively fixedly connected to both ends of the connecting round tube, the third connecting ear is fixedly connected to the rotating shaft sleeve or the connecting round tube, the fourth connecting ear is fixedly connected to the rotating shaft sleeve or the connecting round tube, and the pivot rod and the second swing rod are hinged to the mounting side plates at intervals.

[0015] Further, the two mounting side plates, the connecting round tube, the third connecting ear, the fourth connecting ear and the rotating shaft sleeve are integrally welded.

[0016] Further, a first limit pin for abutting and limiting the first swing rod and / or a second limit pin for abutting and limiting the second swing rod are also arranged on the mounting side plate.

[0017] Further, the telescopic foot pedal assembly includes a front foot pedal bracket, a rear foot pedal bracket and a transmission link group. The rear foot pedal bracket is hinged to the seat frame, the front foot pedal bracket is slidably connected to the rear foot pedal bracket, the transmission link group is arranged on the rear foot pedal bracket, and both ends of the transmission link group are drivingly connected to the seat frame and the front foot pedal bracket, and the foot pedal drive rod is hinged to the rear foot pedal bracket.

[0018] Further, the front footrest bracket includes two U-shaped chutes, a first supporting plate, a second supporting plate, and two auxiliary plates. The two U-shaped chutes are spaced apart and used for sliding connection with the rear footrest bracket. The first supporting plate is connected to the two U-shaped chutes, and the second supporting plate is connected to the two U-shaped chutes. The first supporting plate and the second supporting plate are spaced apart. The two auxiliary plates are respectively connected to different U-shaped chutes, and the two auxiliary plates are located between the first supporting plate and the second supporting plate.

[0019] The zero-gravity recliner provided by the above utility model has the following technical effects:

[0020] (1) The first swing rod is fixedly connected to the pivot rod and thus integrated into the rotating bracket. By using the first swing rod and the second swing rod, the seat frame can be lifted relative to the support base. At the same time, the linkage of the backrest is realized through the backrest connecting rod, and the linkage of the telescopic footrest assembly is realized through the footrest driving rod. In this way, when the push rod motor drives the pivot rod to rotate, the pivot rod drives the seat frame to lift through the first swing rod, the seat frame drives the backrest to flip and recline, and the pivot rod drives the telescopic footrest assembly to extend through the footrest driving rod. Thus, a single push rod motor can realize the adjustment of the zero-gravity state, simplifying the structure, reducing the use of parts, and thus achieving the lightweight and low-cost of the product.

[0021] (2) Since a telescopic footrest assembly is adopted, compared with the scissor-link mechanism combined in the existing single-motor recliner, the telescopic footrest assembly of this solution can swing and contract under the seat frame, and the angle between the footrest surface and the ground can reach a smaller flattened state (for example, the angle can be made 25 degrees). This can provide a larger rest space for the legs when sitting, without the feeling of pressing against the legs, and make the overall recliner look more integrated, with breakthrough functional features in terms of usability and aesthetics.

[0022] (3) The structure of the telescopic footrest assembly is improved, and the structure of the front footrest bracket is optimized. The first supporting plate, the second supporting plate, and the two auxiliary plates are used to form the pedal, reducing the overall material and weight of the pedal, and further improving the lightweight and low-cost of the product. Description of the Drawings

[0023] Figure 1 It is one of the three-dimensional schematic diagrams of the single-motor zero-gravity recliner in the sitting state according to the embodiment of the present utility model;

[0024] Figure 2 It is the exploded schematic diagram of the single-motor zero-gravity recliner according to the embodiment of the present utility model;

[0025] Figure 3 It is the three-dimensional schematic diagram of the single-motor zero-gravity recliner in the zero-gravity reclining state according to the embodiment of the present utility model;

[0026] Figure 4 is Figure 3 the partial enlarged view of part A shown in the figure;

[0027] Figure 5 is the three-dimensional schematic diagram of the bottom bracket of the embodiment of the present utility model;

[0028] Figure 6 is the three-dimensional schematic diagram of the rotating bracket of the embodiment of the present utility model;

[0029] Figure 7 is the three-dimensional schematic diagram of the telescopic footrest assembly of the embodiment of the present utility model;

[0030] Figure 8 is the three-dimensional schematic diagram of the seat frame of the embodiment of the present utility model.

[0031] Among them, the meanings of the reference numerals are as follows:

[0032] 1. Support base; 11. Legs; 12. Rotating shaft; 13. Bottom bracket; 131. Installation side plate; 1311. First hinge hole; 1312. Second hinge hole; 132. Connecting round tube; 133. Third connecting ear; 134. Fourth connecting ear; 135. Rotating shaft sleeve; 136. First limit pin; 137. Second limit pin; 2. Seat frame; 21. Fifth connecting ear; 22. Sixth connecting ear; 23. Seventh connecting ear; 24. Third hinge hole; 25. Fourth hinge hole; 3. Telescopic footrest assembly; 31. Front footrest bracket; 311. U-shaped chute; 312. First supporting plate; 313. Second supporting plate; 314. Auxiliary plate; 32. Rear footrest bracket; 321. Side sliding plate; 3211. Fifth hinge hole; 3212. Sixth hinge hole; 322. First connecting piece; 33. Transmission link group; 331. First link; 332. Second link; 333. Third link; 334. Adapter; 4. Rotating bracket; 41. Pivoting rod; 411. First connecting ear; 412. Second connecting ear; 42. First swing rod; 43. Footrest driving rod; 5. Backrest; 6. Push rod motor; 7. Second swing rod; 8. Backrest link. Detailed implementation manners

[0033] For better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0036] Referring to Figures 1 to 8 , the present utility model discloses a single-motor zero-gravity recliner, including: a support base 1, a seat frame 2, a telescopic footrest assembly 3, a backrest 5, a push rod motor 6, a rotating bracket 4, two second swing rods 7, and a backrest link 8.

[0037] Referring to Figure 1 and Figure 2 , wherein, the support base 1 is used to support on the ground to play a bearing role for the entire recliner. Specifically, the support base 1 includes feet 11, a rotating shaft 12, and a bottom bracket 13. The feet 11 support on the ground, one end of the rotating shaft 12 is connected to the feet 11, and the other end of the rotating shaft 12 is connected to the bottom bracket 13. Thus, through the action of the rotating shaft 12, the bottom bracket 13 can rotate relative to the feet 11, thereby adjusting the orientation.

[0038] It can be understood that in other preferred examples, the support base 1 can also adopt other structures. For example, the bottom bracket 13 can be relatively fixedly connected to the feet 11 through a vertical rod. At this time, the bottom bracket 13 cannot rotate relative to the feet 11, and only the basic support function needs to be satisfied.

[0039] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 6, wherein, the rotating bracket 4 includes a pivot rod 41, two first swing rods 42, and two foot pedal drive rods 43. The pivot rod 41 is hinged to the support base 1. The push rod motor 6 is connected between the pivot rod 41 and the support base 1. The push rod motor 6 is used to drive the pivot rod 41 to rotate. One end of the first swing rod 42 is fixedly connected to the pivot rod 41, and the other end of the first swing rod 42 is hinged to the seat frame 2. The second swing rod 7 is hinged between the support base 1 and the seat frame 2, and the first swing rod 42 and the second swing rod 7 are arranged at intervals. Specifically, the pivot rod 41 is hinged to the bottom bracket 13. One ends of the two first swing rods 42 are respectively fixedly connected to both ends of the pivot rod 41. The other ends of the two first swing rods 42 are respectively hinged to the left and right sides of the seat frame 2. One ends of the two second swing rods 7 are respectively hinged to the bottom bracket 13. The other ends of the two second swing rods 7 are respectively hinged to the left and right sides of the seat frame 2. Among them, the first swing rod 42 is located at the front end of the seat frame 2, and the second swing rod 7 is located at the rear end of the seat frame 2.

[0040] Refer to Figures 1 to 3 , wherein, the telescopic foot pedal assembly 3 is hinged to the seat frame 2, and the foot pedal drive rod 43 is hinged between the pivot rod 41 and the telescopic foot pedal assembly 3; the backrest 5 is hinged to the seat frame 2, and the backrest link 8 is hinged between the backrest 5 and the support base 1. Specifically, a first connection ear 411 for hinging with the push rod motor 6 and a second connection ear 412 for hinging with the foot pedal drive rod 43 are fixedly arranged on the pivot rod 41. The telescopic foot pedal assembly 3 is hinged to the front end of the seat frame 2. One end of the foot pedal drive rod 43 is hinged to the first connection ear 411 on the pivot rod 41. One end of the push rod motor 6 is hinged to the bottom bracket 13. One end of the push rod motor 6 is hinged to the second connection ear 412 on the pivot rod 41. The other end of the foot pedal drive rod 43 is hinged to the telescopic foot pedal assembly 3. The backrest 5 is hinged to the rear end of the seat frame 2. One end of the backrest link 8 is hinged to the bottom bracket 13, and the other end of the backrest link 8 is hinged to the lower end of the backrest 5.

[0041] Preferably, the rotation axis 12 line between the first connection ear 411 and the push rod motor 6 and the rotation axis 12 line between the second connection ear 412 and the foot pedal drive rod 43 both deviate from the rotation axis 12 line between the pivot rod 41 and the support base 1, thus forming two force arms. The force arm formed by the first connection ear 411 is beneficial for the push rod motor 6 to drive the pivot rod 41 to rotate, and the force arm formed by the second connection ear 412 is beneficial for the pivot rod 41 to drive the foot pedal drive rod 43.

[0042] In the above solution, the first swing rod 42 is fixedly connected to the pivot rod 41, thus integrated into the rotating bracket 4. By using the first swing rod 42 and the second swing rod 7, the seat frame 2 can be lifted relative to the support base 1. At the same time, the linkage of the backrest 5 is realized through the backrest link 8, and the linkage of the telescopic footrest assembly 3 is realized through the footrest drive rod 43. In this way, when the push rod motor 6 drives the pivot rod 41 to rotate, with the assistance of the second swing rod 7, the pivot rod 41 drives the seat frame 2 to lift through the first swing rod 42. The seat frame 2 drives the backrest 5 to flip and tilt, and the pivot rod 41 drives the telescopic footrest assembly 3 to extend through the footrest drive rod 43. Thus, a single push rod motor 6 can achieve the adjustment of the zero-gravity state. Compared with the existing seat frame 2 lifting drive method that combines the front and rear swing rods with the lifting drive rod, this solution can save at least one link, simplify the structure, reduce the use of parts, and thus achieve the lightweight and low-cost of the product.

[0043] On the other hand, since the telescopic footrest assembly 3 is adopted, compared with the existing scissors link mechanism used in single-motor leisure chairs, the telescopic footrest assembly 3 of this solution can swing and contract under the seat frame 2, and the angle between the footrest surface and the ground can reach a smaller flattened state (for example, the angle can be 25 degrees). This can provide a larger rest space for the legs when a person is sitting, without the feeling of pressing against the legs, and make the overall leisure chair look more integrated, with breakthrough functional features in terms of usability and aesthetics.

[0044] It can be understood that using two first swing rods 42 and two second swing rods 7 to support the seat frame 2 can improve the stability of the seat frame 2. Therefore, this is the preferred quantity solution. Of course, according to other design requirements, if necessary, the specific quantities of the first swing rod 42 and the second swing rod 7 can also be one, three, or other quantities. Therefore, the quantities of the first swing rod 42 and the second swing rod 7 are not limited here.

[0045] Refer to Figure 5, in this embodiment, preferably, the bottom bracket 13 includes two mounting side plates 131, a connecting round tube 132, a third connecting ear 133 for hinging the push rod motor 6, a fourth connecting ear 134 for hinging the backrest link 8, and a rotating shaft sleeve 135. Among them, the other end of the rotating shaft 12 is connected to the rotating shaft sleeve 135, the connecting round tube 132 is fixedly connected to the rotating shaft sleeve 135, the two mounting side plates 131 are respectively fixedly connected to both ends of the connecting round tube 132, the third connecting ear 133 is fixedly connected to the rotating shaft sleeve 135 or the connecting round tube 132, the fourth connecting ear 134 is fixedly connected to the rotating shaft sleeve 135 or the connecting round tube 132, and the pivot rod 41 and the second swing rod 7 are spaced apart and hinged to the mounting side plates 131. Specifically, both ends of the connecting round tube 132 are upturned, so as to raise the height of the two mounting side plates 131. The rotating shaft sleeve 135 is fixedly connected to the middle of the connecting round tube 132, the third connecting ear 133 is fixedly connected to the middle of the rotating shaft sleeve 135, the fourth connecting ear 134 is fixedly connected to the connecting round tube 132 and is located on one side of the rotating shaft sleeve 135. A first hinge hole 1311 for hinging the pivot rod 41 is provided at the front end of the mounting side plate 131, and a second hinge hole 1312 for hinging the first hinge hole 1311 provided at the front end of the mounting side plate 131 is provided at the rear end of the mounting side plate 131. More preferably, the two mounting side plates 131, the connecting round tube 132, the third connecting ear 133, the fourth connecting ear 134 and the rotating shaft sleeve 135 are integrally welded, so as to improve the overall strength of the bottom bracket 13.

[0046] Thus, in the above solution, by rotating the first swing rod 42 and the second swing rod 7 in the rotating bracket 4, the seat frame 2 and the mounting side plate 131 form a quadrilateral linkage mechanism. When the rotating bracket 4 rotates, under the action of the first swing rod 42 and the second swing rod 7, the inclination angle of the seat frame 2 changes. Through the foot pedal drive rod 43 and the backrest link 8, while the inclination angle of the seat cushion changes, the rotational expansion and contraction of the telescopic footrest assembly 3 and the change of the angle of the backrest 5 are realized.

[0047] In order to limit the swing angle of the seat frame 2, the following solution is also adopted in this embodiment:

[0048] (1) A first limit pin 136 is provided on the mounting side plate 131. The first limit pin 136 is used to abut and limit the first swing rod 42. Specifically, the first limit pin 136 is located in front of the first swing rod 42. When the first swing rod 42 swings forward to a preset angle, the first limit pin 136 can abut against the first swing rod 42 so that the first swing rod 42 cannot continue to swing forward, thereby controlling the forward swing angle of the seat frame 2;

[0049] (2) A second limit pin 137 is provided on the installation side plate 131. The second limit pin 137 is used to abut and limit the second swing rod 7. Specifically, the second limit pin 137 is located behind the second swing rod 7. When the second swing rod 7 swings backward to a preset angle, the second limit pin 137 can abut against the second swing rod 7 to prevent the second swing rod 7 from continuing to swing backward, thereby controlling the backward swing angle of the seat frame 2.

[0050] The first limit pin 136 and the second limit pin 137 can be used in combination or separately.

[0051] Refer to Figure 6 , in this embodiment, there are two second connecting ears 412 and two foot pedal drive rods 43. Each second connecting ear 412 is respectively hinged to a corresponding foot pedal drive rod 43. In this way, the use of the double foot pedal drive rods 43 makes the operation smoother and more stable when driving the telescopic foot pedal assembly 3. The two second connecting ears 412 are arranged at intervals relative to each other on both sides of the first connecting ear 411, and the two second connecting ears 412 are located between the two first swing rods 42, so as to reasonably utilize the lateral space of the pivot rod 41. More preferably, the first connecting ear 411, the second connecting ear 412, the first swing rod 42 and the pivot rod 41 are integrally welded to improve their overall strength.

[0052] Refer to Figure 8 , in this embodiment, two fifth connecting ears 21, a sixth connecting ear 22, and two seventh connecting ears 23 are provided on the seat frame 2. The two fifth connecting ears 21 are arranged at intervals on the front cross bar of the seat frame 2. The sixth connecting ear 22 is provided on the front cross bar of the seat frame 2 and is located between the two fifth connecting ears 21. The two seventh connecting ears 23 are arranged at intervals on the rear cross bar of the seat frame 2. Among them, the two fifth connecting ears 21 are used to be hinged to the rear foot pedal bracket 32 in the telescopic foot pedal assembly 3. The sixth connecting ear 22 is used to be hinged to the transmission link group 33 in the telescopic foot pedal assembly 3. The two seventh connecting ears 23 are used to be hinged to the backrest 5. Third hinge holes 24 and fourth hinge holes 25 are respectively provided on the left and right rods of the seat frame 2. The third hinge holes 24 are close to the front ends of the left and right rods, and the fourth hinge holes 25 are close to the rear ends of the left and right rods. The third hinge holes 24 are used to be hinged to the first swing rod 42, and the fourth hinge holes 25 are used to be hinged to the second swing rod 7.

[0053] Refer to Figure 7In the present embodiment, the telescopic foot pedal assembly 3 comprises a front foot pedal bracket 31, a rear foot pedal bracket 32 ​​and a transmission link group 33. The rear foot pedal bracket 32 ​​is hinged to the seat frame 2, the front foot pedal bracket 31 is slidably connected to the rear foot pedal bracket 32, the transmission link group 33 is arranged on the rear foot pedal bracket 32, and the two ends of the transmission link group 33 are transmission-connected to the seat frame 2 and the front foot pedal bracket 31, the pedal driving rod 43 is hinged to the rear foot pedal bracket 32, when the pedal driving rod 43 drives the rear foot pedal bracket 32 ​​to rotate relative to the seat frame 2, the transmission link group 33 can synchronously drive the front foot pedal bracket 31 to telescope relative to the rear foot pedal bracket 32.

[0054] Combination Figure 4 Specifically, the rear pedal bracket 32 ​​includes two side slide plates 321 arranged at a relative interval and a first connecting member 322 connecting the two side slide plates 321, and the first connecting member 322 is used to strengthen the overall strength of the rear pedal bracket 32; the two side slide plates 321 of the rear pedal bracket 32 ​​are respectively slidably matched with the front pedal bracket 31, and the side slide plates 321 are provided with a fifth hinge hole 3211 and a sixth hinge hole 3212, the fifth hinge hole 3211 is used to be hinged with the fifth connecting ear 21, and the sixth hinge hole 3212 is used to be hinged with the pedal drive rod 43; the transmission connecting rod group 33 It includes a first connecting rod 331, a second connecting rod 332, an adapter 334 and a third connecting rod 333 which are hinged in sequence. The other end of the first connecting rod 331 is hinged to the front footrest bracket 31, the middle part of the second connecting rod 332 is hinged to the first connecting member 322 in the rear footrest bracket 32, and the other end of the third connecting rod 333 is used to hinge the seat frame 2. Therefore, when the third connecting rod 333 drives the second connecting rod 332 to rotate through the adapter 334, the second connecting rod 332 can drive the first connecting rod 331 to drive the front footrest bracket 31 to slide and retract relative to the rear footrest bracket 32.

[0055] Specifically, one end of the first link 331 is hinged to one end of the second link 332, the other end of the first link 331 is hinged to the first support plate 312 in the front footrest bracket 31, the other end of the second link 332 is hinged to one end of the adapter 334, the middle of the second link 332 is hinged to the first connecting member 322, the other end of the adapter 334 is hinged to one end of the third link 333, and the other end of the third link 333 is used to hinge the seat frame 2. Among them, the two hinge axes on the adapter 334 are vertical, and through the action of the adapter 334, the third link 333 can make two perpendicular axial rotations relative to the second link 332; in addition, preferably, the other end of the third link 333 is connected to the sixth connecting ear 22 through a universal joint.

[0056] Preferably, the front footrest bracket 31 includes two U-shaped chutes 311, a first supporting plate 312, a second supporting plate 313, and two auxiliary plates 314. The two U-shaped chutes 311 are arranged at intervals and are used for sliding connection with the rear footrest bracket 32. Specifically, the two U-shaped chutes 311 are respectively slidably connected to the corresponding different side slides 321. The first supporting plate 312 is connected to the two U-shaped chutes 311, and the second supporting plate 313 is connected to the two U-shaped chutes 311. The first supporting plate 312 and the second supporting plate 313 are arranged at intervals. The two auxiliary plates 314 are respectively connected to different U-shaped chutes 311, and the two auxiliary plates 314 are located between the first supporting plate 312 and the second supporting plate 313. Thus, compared with a whole supporting plate, the structure of the front footrest bracket 31 is optimized in this solution. The first supporting plate 312, the second supporting plate 313, and the two auxiliary plates 314 are used to form the pedal, reducing the overall material and weight of the pedal, and further improving the lightweight and low-cost of the product.

[0057] It should be noted that the hinge points between the above-mentioned components can be realized by means of rivets, screws, pin posts, rotating shafts, etc. The specific implementation manner of the hinge in the present invention is not limited.

[0058] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A single motor zero gravity leisure chair, characterized in that: include: Support base, seat frame, telescopic footrest assembly, backrest, push rod motor, rotating bracket, second swing rod, backrest connecting rod, wherein, The rotating bracket comprises a pivot rod, a first swing rod, and a pedal driving rod, wherein the pivot rod is hinged to the supporting base, the push rod motor is connected between the pivot rod and the supporting base, and the push rod motor is used to drive the pivot rod to rotate, one end of the first swing rod is fixed to the pivot rod, the other end of the first swing rod is hinged to the seat frame, the second swing rod is hinged between the supporting base and the seat frame, and the first swing rod and the second swing rod are arranged at intervals; The telescopic foot pedal assembly is hinged to the seat frame, and the pedal drive rod is hinged between the pivot rod and the telescopic foot pedal assembly; The backrest is hinged to the seat frame, and the backrest connecting rod is hinged between the backrest and the support base.

2. The single motor zero gravity leisure chair according to claim 1, characterized in that: A first connecting ear and a second connecting ear are fixedly provided on the pivot rod, the first connecting ear is hinged to the push rod motor, the second connecting ear is hinged to the pedal drive rod, and the rotation axis between the first connecting ear and the push rod motor and the rotation axis between the second connecting ear and the pedal drive rod both deviate from the rotation axis between the pivot rod and the support base.

3. The single motor zero gravity leisure chair according to claim 2, characterized in that: Two first swing rods are provided, one end of the two first swing rods is respectively fixed to the two ends of the pivot rod, and the other end of the two first swing rods is respectively hinged to the left and right sides of the seat frame.

4. The single motor zero gravity leisure chair according to claim 3, characterized in that: There are two second connecting ears, and there are two pedal drive rods. Each second connecting ear is hinged to a corresponding pedal drive rod, and the two second connecting ears are arranged on both sides of the first connecting ear with relative intervals, and the two second connecting ears are located between the two first rocker rods.

5. The single motor zero gravity leisure chair according to claim 2, characterized in that: The first connecting ear, the second connecting ear, the first swing rod and the pivot rod are welded together.

6. The single motor zero gravity leisure chair according to claim 1, characterized in that: The support base includes a support foot, a rotating shaft and a bottom bracket, the bottom bracket includes two mounting side plates, a connecting circular tube, a third connecting ear for hingedly connecting the push rod motor, a fourth connecting ear for hingedly connecting the backrest connecting rod, and a rotating shaft sleeve, one end of the rotating shaft is connected to the support foot, the other end of the rotating shaft is connected to the rotating shaft sleeve, the connecting circular tube is fixedly connected to the rotating shaft sleeve, the two mounting side plates are respectively fixedly connected to the two ends of the connecting circular tube, the third connecting ear is fixedly connected to the rotating shaft sleeve or the connecting circular tube, the fourth connecting ear is fixedly connected to the rotating shaft sleeve or the connecting circular tube, the pivot rod and the second rocker rod are hinged to the mounting side plates at intervals.

7. The single motor zero gravity leisure chair according to claim 6, characterized in that: The two mounting side plates, the connecting round tube, the third connecting ear, the fourth connecting ear and the rotating shaft sleeve are integrally welded.

8. The single motor zero gravity leisure chair according to claim 6, characterized in that: The mounting side plate is also provided with a first limit pin for limiting the position against the first swing rod and / or a second limit pin for limiting the position against the second swing rod.

9. The single motor zero gravity leisure chair according to claim 1, characterized in that: The telescopic foot pedal assembly includes a front foot pedal bracket, a rear foot pedal bracket and a transmission connecting rod group. The rear foot pedal bracket is hinged to the seat frame, the front foot pedal bracket is slidably connected to the rear foot pedal bracket, the transmission connecting rod group is arranged on the rear foot pedal bracket, and both ends of the transmission connecting rod group are transmission-connected to the seat frame and the front foot pedal bracket, and the pedal driving rod is hinged to the rear foot pedal bracket.

10. The single motor zero gravity leisure chair according to claim 9, characterized in that: The front footrest bracket includes two U-shaped slide grooves, a first supporting plate, a second supporting plate, and two auxiliary plates. The two U-shaped slide grooves are arranged at intervals and are used to be slidably connected to the rear footrest bracket. The first supporting plate is connected to the two U-shaped slide grooves, and the second supporting plate is connected to the two U-shaped slide grooves. The first supporting plate and the second supporting plate are arranged at intervals, and the two auxiliary plates are respectively connected to different U-shaped slide grooves, and the two auxiliary plates are located between the first supporting plate and the second supporting plate.

Images