Flat-lying massage chair frame

Abstract

The utility model relates to a lying massage chair frame which comprises a base frame, a cushion frame, a backrest frame, a leg and foot frame and an electric push rod. The backrest frame is arranged at the rear part of the cushion frame, the backrest frame and the cushion frame are movably arranged on the base frame, and the cushion frame and the backrest frame are driven by the electric push rod to swing; wherein a first linkage mechanism is arranged between the front end of the backrest frame and the front end of the cushion frame, a second linkage mechanism is arranged between the front end of the leg and foot frame and the front end of the cushion frame, the electric push rod is hinged between the front end of the base frame and the front end of the cushion frame, and the angle of the backrest frame and the angle of the cushion frame are adjusted through the first linkage mechanism. And the angle of the cushion frame is changed along with the change of the leg and foot frame driven by the second linkage mechanism. According to the utility model, the electric push rod is matched with the two linkage mechanisms, so that the backrest frame and the leg and foot frame are correspondingly linked for adjustment; the chair has the characteristics of unique conception, simple structure, no forward sitting posture and horizontal lying posture, and has the effects of relaxation and sleep promotion.

Description

Technical fields:

[0001] This utility model belongs to the field of massage chair technology, and specifically relates to a reclining massage chair frame, especially a solution that can be adjusted to a reclining state. Background technology:

[0002] Massage chairs offer comprehensive relaxation and therapeutic benefits, and can also promote sleep. Their development has progressed from segmented structures for the seat and backrest to integrated L-shaped tracks. The former features separate massage mechanisms for the seat and backrest, resulting in higher costs; the latter requires only one massage mechanism that can continuously move between the seat and backrest. While it allows for continuous changes from sitting to reclining positions, the angle between the buttocks and backrest remains constant due to the L-shaped track, which is its biggest drawback. Currently, L-shaped track massage chairs, due to their limited posture, are not suitable for prolonged sleeping. Therefore, manufacturers are seeking solutions from traditional methods, such as:

[0003] CN201020286803.5 discloses a reclining leisure massage chair, including a backrest, a seat cushion, and a footrest. The backrest and footrest frames are hinged to the seat cushion frame, respectively. The backrest and footrest frames are connected by a linkage mechanism. When the backrest frame flips backward, the footrest frame rises accordingly. A sliding plate is also provided on the footrest frame, which is connected to a swing rod mechanism and can slide back and forth within a slide rail. Foot pads are connected to the sliding plate. This structure allows the footrest to rise simultaneously when the backrest flips backward, enabling the chair to unfold horizontally and allowing the user to recline.

[0004] CN202223483744.2 discloses a massage chair that allows for reclining massage, relating to the field of massage chairs. Massage mechanisms are respectively installed on the base assembly and the backrest assembly, and the massage mechanisms can slide along the backrest assembly or the base assembly; the backrest assembly is hinged to the base assembly, and the backrest assembly can rotate around the base assembly so that the backrest assembly and the base assembly are on the same horizontal plane. This device provides users with a massage chair that allows for reclining massage. Users can receive massages in either a sitting or reclining position. When the massage chair is not in use, it can also be used as a bed by adding a soft cushion, thus achieving multi-functionality and effectively improving utilization.

[0005] None of the above-mentioned seat cushions can change shape with sitting or lying down. Although lying down provides a better experience, sitting comfort is affected. Therefore, providing a more reasonable technical solution is the subject of this invention. Summary of the Invention:

[0006] The purpose of this invention is to design a reclining massage chair frame that is driven by an electric push rod to connect the seat cushion frame and the backrest frame.

[0007] The present invention is implemented as follows: a reclining massage chair frame includes a base frame, a seat cushion frame, a backrest frame, a leg support, and an electric push rod; the backrest frame is located at the rear of the seat cushion frame, and the backrest frame and seat cushion frame are movably mounted on the base frame, and the seat cushion frame and backrest frame are driven to swing by the electric push rod; the leg support is suspended at the front end of the seat cushion frame and can swing with the seat cushion frame; the invention is characterized in that: a first linkage mechanism is provided between the front end of the backrest frame and the front end of the seat cushion frame, and a second linkage mechanism is provided between the front end of the leg support and the front end of the seat cushion frame; the electric push rod is hinged between the front end of the base frame and the front end of the seat cushion frame, and the first linkage mechanism drives the adjustment of the angle between the backrest frame and the seat cushion frame, and the change in the angle of the seat cushion frame drives the leg support to change accordingly through the second linkage mechanism.

[0008] The first linkage mechanism includes a first support rod, a curved arm connecting rod, and a pull rod. The curved arm connecting rod has a short arm section and a long arm section at an angle, which are hinged to the base frame at the angle. The long arm section is hinged to the pull rod, and the other end of the pull rod is hinged to the crossbeam at the lower part of the backrest frame. The short arm section is hinged to the first support rod, and the other end of the first support rod is hinged to the front end of the seat cushion frame. When the front end of the seat cushion frame moves downward, the first support rod pulls the lower end of the backrest frame forward to change to a lying angle through the curved arm connecting rod. The second linkage mechanism includes a second support rod and a swing rod. The swing rod is hinged to the front end of the seat cushion frame and has a roller at its lower end, which abuts against the back of the leg frame. The lower end of the second support rod is hinged to the base frame, and the upper end is hinged to the swing rod. When the front end of the seat cushion frame moves downward, the second support rod can lift the leg frame.

[0009] The angle between the short arm and the long arm of the crank arm connecting rod is between 100 and 120 degrees.

[0010] The base frame has symmetrical uprights on both sides of its rear for hinged connection of the backrest frame or the seat cushion frame, and there are four specific hinge structures: 1. The backrest frame and the seat cushion frame are respectively hinged to the uprights; 2. The backrest frame and the seat cushion frame are coaxially hinged to the uprights; 3. The backrest frame is hinged to the rear of the seat cushion frame, and the seat cushion frame is then hinged to the uprights; 4. The backrest frame is hinged to the rear of the seat cushion frame, and the backrest frame is then hinged to the uprights.

[0011] The backrest frame is also equipped with armrest supports on both sides of its lower part.

[0012] The armrest support has any of the following structures: 1. A metal tube, welded above the hinge position between the backrest frame and the upright or seat cushion frame; 2. A bent sheet metal part, welded to the downward extension section of the backrest frame hinge position, which bends outward from the top to bypass both sides of the seat cushion frame.

[0013] The electric push rod and the first support rod in the first linkage mechanism are hinged at the first position at the front end of the seat cushion frame, the swing rod in the second linkage mechanism is suspended at the second position, and the leg rest is at the third position; the first position faces the rear end of the seat cushion frame, the third position is at the front end, and the second position is between the first position and the third position.

[0014] The electric push rod and the crank arm connecting rod in the first linkage mechanism are hinged at the fourth position of the base frame, which is behind the orthogonal projection of the first position.

[0015] The swing arm has a lug welded to its front and rear ends, namely the front lug and the rear lug. The front lug is located at the lower end and is used to hinge the roller. The rear lug is located higher than the front lug and is used to hinge the second support rod.

[0016] This utility model features a separate seat and backrest frame, each with its own degree of freedom, allowing for adjustment of the angle between them to achieve a continuous change from a sitting to a reclining posture. It utilizes an electric push rod in conjunction with two linkage mechanisms to correspondingly adjust the backrest frame and leg support. It is characterized by its unique design, simple structure, and ability to prevent forward shifting in the sitting posture while maintaining a horizontal reclining posture, thus satisfying the needs for relaxation and promoting sleep. Attached image description:

[0017] The invention will be further described below with reference to specific figures:

[0018] Figure 1 Diagram showing the sitting posture of a reclining massage chair frame.

[0019] Figure 2 Schematic diagram of the retractable massage chair frame

[0020] Figure 3 A side view diagram of a reclining massage chair frame in a seated position.

[0021] Figure 4 Diagram showing the reclining position of a massage chair frame.

[0022] Figure 5 A side view diagram of a reclining massage chair frame in a lying position.

[0023] Figure 6 Side view diagram of a reclining massage chair frame

[0024] in

[0025] 1—Base frame; 11—Upright column;

[0026] 2—Seat cushion frame;

[0027] 3—Backrest frame; 31—Crossbeam; 32—Extension section; 33—Armrest support; 34—Railway; 35—Frame;

[0028] 4—Legged scaffolding;

[0029] 5—Electric linear actuator;

[0030] 6—First linkage mechanism; 61—First strut; 62—Crank arm connecting rod; 621—Short arm section; 622—Long arm section;

[0031] 63—Pull rod;

[0032] 7—Second linkage mechanism; 71—Second support rod; 72—Swing rod; 73—Roller;

[0033] 8—Helium;

[0034] A—Angle; B—First position; C—Second position; D—Third position; E—Fourth position; Detailed implementation method:

[0035] Reference Figures 1 to 5 The reclining massage chair frame includes a base frame 1, a seat cushion frame 2, a backrest frame 3, a leg support 4, and an electric push rod 5. The base frame 1 supports the seat cushion frame 2 and the backrest frame 3. Symmetrical uprights 11 are arranged on both sides of its rear to support the backrest frame or seat cushion frame, thus raising the seat cushion frame 2 to a suitable height for sitting. Specifically, it has the following four hinge structures:

[0036] 1. The backrest frame 3 and the seat cushion frame 2 are respectively hinged to the column 11, as in this example, so that the backrest frame 3 and the seat cushion frame 2 have different swing centers, which can be used to adjust the design height difference between the backrest frame 3 and the seat cushion frame 2, and also bring convenience to the step assembly.

[0037] Second, the backrest frame 3 and the seat cushion frame 2 are coaxially hinged on the column 11, that is, the two are hinged on the column 11 on the same hinge axis, so as to achieve one assembly.

[0038] 3. The backrest frame 3 is hinged to the rear of the seat cushion frame 2, and the seat cushion frame 2 is then hinged to the upright column 11. The seat cushion frame 2 serves as the support center, and the backrest frame follows.

[0039] Fourth, the backrest frame 3 is hinged to the rear of the seat cushion frame 2, and the backrest frame 3 is then hinged to the upright column 11, which is the opposite of the previous example.

[0040] The above four hinge connection schemes for the seat cushion frame 2, backrest frame 3 and upright column 11 can be selected for actual design.

[0041] The electric push rod 5 is hinged between the front end of the base frame 1 and the seat cushion frame 2, driving the seat cushion frame 2 to swing around the hinge point. During the change from sitting to lying position, the angle of the seat cushion frame 2 also changes continuously. In the sitting position, the front end of the seat cushion frame tilts upward, and the body does not move forward after sitting down, maintaining a more relaxed posture.

[0042] A first linkage mechanism 6 is provided between the crossbeam 31 at the lower part of the backrest frame 3 and the front end of the seat cushion frame 2. This first linkage mechanism 6 includes a first support rod 61, a curved arm connecting rod 62, and a pull rod 63. The curved arm connecting rod 62 has a short arm section 621 and a long arm section 622 at an angle, hinged to the base frame 1 at the angle. The long arm section 622 is hinged to the pull rod 63, and the other end of the pull rod 63 is hinged to the crossbeam 31 of the backrest frame. The short arm section 621 is hinged to the first support rod 61, and the other end of the first support rod 61 is hinged to the front end of the seat cushion frame 2. When the front end of the seat cushion frame 2 moves downwards, the first support rod 61 pulls the lower end of the backrest frame 3 forward to a reclining angle via the curved arm connecting rod 62. The curved arm connecting rod 62 acts as a lever, changing the direction of the force and adjusting the swing stroke at both ends to satisfy two extreme angles. Therefore, the angle A between the short arm section 621 and the long arm section 622 of the crank arm connecting rod is controlled between 100 and 120 degrees. Figure 2 and Figure 3 The reasonable angle design not only satisfies the efficiency of force application, but also avoids excessive forward swing of the short boom section 621, which would affect the front space.

[0043] A second linkage mechanism 7 is provided between the front end of the leg support 4 and the seat cushion 2. The second linkage mechanism 7 includes a second support rod 71 and a swing rod 72.

[0044] The swing arm 72 is hinged to the front end of the seat frame 2, and a roller 73 is installed at the lower end. The roller 73 abuts against the back of the leg frame 4, driving the leg frame 4 to lift. The lower end of the second support rod 71 is hinged to the base frame 1, and the upper end is hinged to the swing arm 72. When the front end of the seat frame 2 moves downward, the second support rod 71 can support the leg frame 4, allowing the upper body and legs to lie flat. More specifically, a lug 8 is welded to the front and rear of the swing arm 72, namely the front lug 81 and the rear lug 82. The front lug 81 is located at the lower end and is used to hinge the roller 73. The rear lug 82 is located higher than the front lug 81 and is used to hinge the second support rod 71. Adjusting the position of the rear lug 82 can also change the height of the leg frame 4. In addition, all the hinged positions mentioned above also use lugs 8 to facilitate hinged connections with the square tube rods.

[0045] As a preferred embodiment, armrest supports 33 are also provided on both sides of the lower part of the backrest frame 3, and have the following structure:

[0046] 1. A bent sheet metal part is welded to the downward extension section 32 at the hinge position of the backrest frame, and bends outward at the top to wrap around both sides of the seat cushion frame 2. Taking advantage of the ease of processing the bent section using sheet metal, the backrest frame 1 is generally located inside the seat cushion frame 2, and the armrest bracket 33 bends around to the outside of the seat cushion frame, providing a position for installing the armrests. This allows the armrests to follow the changes in the backrest frame, and the angle of the hands is not affected during changes in sitting or reclining postures, making it especially suitable for massage chairs with forearm massage functions.

[0047] 2. Metal tubing, welded above the hinge point between the backrest frame 3 and the upright or seat frame. That is, close to the hinge point, extending forward to provide a mounting position for the armrests. The metal tubing is slightly higher than the seat frame plane, or intersects it at a small angle, such as... Figure 6 dotted line.

[0048] Reference Figure 3 The electric push rod 5 and the first support rod 61 in the first linkage mechanism are hinged to the first position B at the front end of the seat cushion frame 2. The swing rod 72 in the second linkage mechanism is suspended at the second position C, and the leg support 4 is at the third position C. The first position B faces the rear end of the seat cushion frame, the third position D is at the front end of the seat cushion frame, and the second position C is between the first position B and the third position D. The electric push rod 5 and the crank arm connecting rod 62 in the first linkage mechanism are hinged to the fourth position E of the base frame 1, which is behind the projected image of the first position B.

[0049] The terms "front end," "back end," and "forward" and "backward" used above refer to the direction in which a person sits on the seat cushion 2, with the forward direction being considered the front end or forward, and the back direction being considered the rear end or back. Furthermore, the backrest frame 3 is designed according to the function of different massage mechanisms. For example, for massage mechanisms with a walking function, a track 34 for walking is required in the backrest frame 3, with the track 34 as the main component. A frame 35 is welded to the outside to provide support for the armrests and backrest foam, etc. This example uses this structure, which can meet the needs of walking massage on the backrest. If a fixed-point massage mechanism is used, the track can be omitted, thereby strengthening the frame 35 component, and a crossbeam 31 is set between the two sides to strengthen the overall function of the backrest frame. This is also a common design feature.

Claims

1. A reclining massage chair frame, comprising a base frame, a seat cushion frame, a backrest frame, a leg support, and an electric push rod; the backrest frame is disposed at the rear of the seat cushion frame, and the backrest frame and seat cushion frame are movably mounted on the base frame, and the seat cushion frame and backrest frame are driven to swing by the electric push rod; the leg support is suspended at the front end of the seat cushion frame and can swing with the seat cushion frame; characterized in that: A first linkage mechanism is provided between the front end of the backrest frame and the front end of the seat cushion frame, and a second linkage mechanism is provided between the front end of the leg support and the front end of the seat cushion frame. The electric push rod is hinged between the front end of the base frame and the front end of the seat cushion frame. The first linkage mechanism drives the adjustment of the angle between the backrest frame and the seat cushion frame, and the change in the angle of the seat cushion frame drives the leg support to change accordingly through the second linkage mechanism. The electric push rod and the first support rod in the first linkage mechanism are hinged at a first position at the front end of the seat cushion frame, the swing rod in the second linkage mechanism is suspended at a second position, and the leg support is at a third position. The first position faces the rear end of the seat cushion frame, the third position is at the front end, and the second position is between the first and third positions.

2. The reclining massage chair frame according to claim 1, characterized in that: The first linkage mechanism includes a first support rod, a curved arm connecting rod, and a pull rod. The curved arm connecting rod has a short arm section and a long arm section at an angle, which are hinged to the base frame at the angle. The long arm section is hinged to the pull rod, and the other end of the pull rod is hinged to the crossbeam at the lower part of the backrest frame. The short arm section is hinged to the first support rod, and the other end of the first support rod is hinged to the front end of the seat cushion frame. When the front end of the seat cushion frame moves downward, the first support rod pulls the lower end of the backrest frame forward to change the lying angle through the curved arm connecting rod. The second linkage mechanism includes a second support rod and a swing rod. The swing rod is hinged to the front end of the seat cushion frame and has a roller at its lower end, which abuts against the back of the leg frame. The lower end of the second support rod is hinged to the base frame, and the upper end is hinged to the swing rod. When the front end of the seat cushion frame moves downward, the second support rod can lift the leg frame.

3. A reclining massage chair frame according to claim 2, characterized in that: The angle between the short arm and the long arm of the articulated connecting rod is between 100 and 120 degrees.

4. The reclining massage chair frame according to claim 1, characterized in that: The base frame has symmetrical uprights on both sides at the rear for hinged backrest or seat cushion. There are four hinge structures:

1. The backrest and seat cushion are hinged to the uprights respectively; 2. The backrest and seat cushion are hinged coaxially to the uprights; 3. The backrest is hinged to the rear of the seat cushion, and the seat cushion is then hinged to the uprights; 4. The backrest is hinged to the rear of the seat cushion, and the backrest is then hinged to the uprights.

5. A reclining massage chair frame according to claim 1 or 4, characterized in that: Armrest supports are also provided on both sides of the lower part of the backrest frame.

6. A reclining massage chair frame according to claim 5, characterized in that: The armrest support has any of the following structures:

1. A metal tube, welded above the hinge position between the backrest frame and the upright or seat cushion frame; 2. A bent sheet metal part, welded to the downward extension of the hinge position of the backrest frame, with the upper part bent outwards to pass around both sides of the seat cushion frame.

7. A reclining massage chair frame according to claim 1, characterized in that: The electric push rod and the crank arm connecting rod in the first linkage mechanism are hinged at the fourth position of the base frame, which is behind the orthogonal projection of the first position.

8. A reclining massage chair frame according to claim 1, characterized in that: A lug is welded to the front and rear of the swing arm, respectively. The front lug is located at the lower end and is used to hinge the roller. The rear lug is located higher than the front lug and is used to hinge the second support rod.

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