Seat multi-connecting-rod adjusting mechanism

Abstract

The invention relates to the technical field of seats, in particular to a seat multi-connecting-rod adjusting mechanism which comprises a base, a seat frame and a backrest assembly, the backrest assembly comprises a backrest connecting rod and a backrest mounting rod, the seat multi-connecting-rod adjusting mechanism further comprises a foot support assembly and a connecting assembly which are hinged to each other, and the foot support assembly comprises a foot support connecting rod, a rear rod, an upper connecting rod, a middle rod, a lower connecting rod and a foot support. The connecting assembly comprises a lower connecting rod and an upper connecting rod, and the base, the seat frame, the backrest assembly and the foot support assembly are hinged to one another through the connecting assembly. The seat is simple in structure and small in occupied space, the angle and position of the backrest, the seat cushion and the foot support can be adjusted at the same time, and therefore seat posture adjustment is achieved, and a human body can have a comfortable rest posture.

Description

Technical Field

[0001] The invention relates to the technical field of seats, and in particular to a multi-link adjustment mechanism for a seat. Background Art

[0002] Seat adjustment is an important part of people's riding comfort. A high degree of adjustment comfort can ensure that people will not feel tired during a long ride. A high degree of comfort in the resting posture can relieve people's fatigue and allow them to get sufficient rest. The multi-link adjustment mechanism of the seat can quickly and efficiently adjust people to a comfortable resting posture through one-touch operation. The present invention aims to solve the above series of practical problems.

[0003] In the prior art, there are two adjustment methods. One is to use three sets of adjustment mechanisms to adjust the backrest angle, seat cushion angle, and footrest position and angle respectively. To achieve human body posture adjustment, the above three sets of mechanisms need to be adjusted separately. In this case, a set of controllers is also required to achieve the linkage adjustment of the three sets of mechanisms. The disadvantages of this seat adjustment are that the system is complex, heavy, costly, and occupies a large space.

[0004] Another type is a seat with linked adjustment of the seat cushion and backrest, such as the patent number CN102871387A, which can adjust the seat cushion and the backrest at the same time, or a multi-position adjustment seat, such as the patent number CN108523495B, which can adjust the backrest and footrest at the same time.

[0005] The above two adjustment methods are both unable to satisfy the simultaneous adjustment of the backrest, the seat cushion and the footrest, and the comfort is poor, and cannot meet the requirements of a high-comfort resting posture. Summary of the invention

[0006] The present invention provides a multi-link adjustment mechanism for a seat to solve the problems of the prior art.

[0007] The object of the present invention can be achieved through the following technical solutions: A multi-link adjustment mechanism for a seat, comprising: a base, a seat frame and a backrest assembly, wherein the backrest assembly comprises a backrest connecting rod and a backrest mounting rod, and further comprises a footrest assembly and a connecting assembly that are hinged to each other;

[0008] The footrest assembly comprises a footrest connecting rod, a rear rod, an upper connecting rod, a middle rod, a lower connecting rod and a footrest;

[0009] The connecting assembly comprises a lower connecting rod and an upper connecting rod;

[0010] The base, the seat frame, the backrest assembly and the footrest assembly are hinged to each other through a connecting assembly.

[0011] A further improvement is that the two ends of the footrest connecting rod are respectively hinged to the backrest mounting rod and the rear rod, the upper end of the rear rod is hinged to the seat frame and the lower end is hinged to the upper connecting rod, the upper end of the middle rod is hinged to the bottom frame and the middle and lower ends are respectively hinged to the middle part of the upper connecting rod and the lower connecting rod, the upper end of the front rod is hinged to the upper connecting rod and the lower end is hinged to the lower connecting rod, the two ends of the lower connecting rod are respectively hinged to the front rod and the lower end of the middle rod, the upper end of the upper connecting rod is hinged to the front rod and the middle and lower ends are respectively hinged to the middle rod and the rear rod.

[0012] A further improvement is that the base includes a vertical beam and a horizontal beam fixed to each other, a first rotating seat is fixedly provided on both sides of the vertical beam, a second rotating seat and a third rotating seat are fixedly provided on the upper and lower sides of the end of the seat frame respectively, and a fourth rotating seat is fixedly provided at the front end, the first rotating seat is hinged to the third rotating seat, the second rotating seat is hinged to the backrest mounting rod, and the fourth rotating seat is hinged to the rear rod.

[0013] As a further improvement, the upper and lower sides of the end of the seat frame are respectively hinged to the backrest rod and the base, and the front end is hinged to the front upper connecting rod.

[0014] As a further improvement, a rotating rod is arranged between the backrest mounting rods, the end of the backrest connecting rod is rotatably arranged on the rotating rod and the front end is hinged to the connecting assembly.

[0015] As a further improvement, a drive motor is provided on a side of the horizontal beam away from the vertical beam, and an output end of the drive motor is transmission-connected to a lower end of the lower connecting rod.

[0016] As a further improvement, a mounting groove is provided on the footrest.

[0017] Compared with the prior art, the present invention has the following beneficial effects: in actual use, when the seat frame is unfolded, the front lower connecting rod rotates counterclockwise and moves upward, and drives the front upper connecting rod to move through the hinge. The front upper connecting rod is hinged with the seat frame to drive the seat frame to lift up. Since one end of the backrest connecting rod is hinged with the front lower connecting rod and the front upper connecting rod, when the front lower connecting rod rotates counterclockwise, it drives the backrest connecting rod to move forward together. The backrest connecting rod drives the backrest rod to rotate clockwise around the seat frame through the hinge, so that the backrest rod tilts. The clockwise rotation of the backrest rod pushes the footrest connecting rod forward through the hinge, and the footrest The connecting rod drives the rear rod to move clockwise around the seat frame through the hinge. The clockwise movement of the rear rod pushes the upper connecting rod forward through the hinge, thereby driving the middle rod to rotate clockwise. The clockwise movement of the middle rod also pushes the upper connecting rod through the hinge, and the lower connecting rod moves forward, thereby driving the front rod clockwise to achieve the purpose of supporting the legs of the person. As shown in the figure, when the seat frame is folded up, the front lower connecting rod rotates clockwise and moves downward, and the above movement is reversed. The structure is simple and the space occupied is small. It can simultaneously adjust the angle and position of the backrest, seat cushion and footrest, thereby realizing the seat posture adjustment so that the human body can achieve a comfortable resting posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a simplified diagram of the present invention in a folded state;

[0019] Figure 2 It is a simplified diagram of the present invention in an unfolded state;

[0020] Figure 3 It is a structural schematic diagram of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the present invention in a folded state;

[0022] Figure 5 It is a schematic diagram of the structure of the present invention in an unfolded state.

[0023] In the figure, 1, base; 101, vertical beam; 102, horizontal beam; 103, first rotating seat; 2, seat frame; 201, second rotating seat; 202, third rotating seat; 203, fourth rotating seat; 3, backrest connecting rod; 4, backrest mounting rod; 41, rotating rod; 5, footrest connecting rod; 6, rear rod; 7, upper connecting rod; 8, middle rod; 9, lower connecting rod; 10, footrest; 1001, mounting groove; 11, lower connecting rod; 12, upper connecting rod. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Below is a combination of the embodiments and the attached Figures 1 to 4 , the technical solution of the present invention is further elaborated.

[0027] Example 1

[0028] A multi-link adjustment mechanism for a seat, comprising: a base 1, a seat frame 2 and a backrest assembly, wherein the backrest assembly comprises a backrest connecting rod 3 and a backrest mounting rod 4, and further comprises a footrest assembly and a connecting assembly which are hinged to each other;

[0029] The footrest assembly includes a footrest connecting rod 5, a rear rod 6, an upper connecting rod 7, a middle rod 8, a lower connecting rod 9 and a footrest 10;

[0030] The connecting assembly includes a lower connecting rod 11 and an upper connecting rod 12;

[0031] The base 1, the seat frame 2, the backrest assembly and the footrest assembly are hinged to each other through a connecting assembly.

[0032] like Figures 1 to 5 As shown, the present invention can adjust the angles and positions of the backrest, the seat cushion and the footrest at the same time, thereby achieving seat posture adjustment so that the human body can reach a comfortable resting posture.

[0033] As a further preferred embodiment, the two ends of the footrest connecting rod 5 are respectively hinged to the backrest mounting rod 4 and the rear rod 6, the upper end of the rear rod 6 is hinged to the seat frame 2 and the lower end is hinged to the upper connecting rod 7, the upper end of the middle rod 8 is hinged to the bottom frame 2 and the middle and lower ends are respectively hinged to the middle part of the upper connecting rod 7 and the lower connecting rod 9, the upper end of the front rod 10 is hinged to the upper connecting rod 7 and the lower end is hinged to the lower connecting rod 9, the two ends of the lower connecting rod 9 are respectively hinged to the front rod 10 and the lower end of the middle rod 8, the upper end of the upper connecting rod 7 is hinged to the front rod 10 and the middle and lower ends are respectively hinged to the middle rod 8 and the rear rod 6.

[0034] Specifically, during use:

[0035] 1) If Figure 1 As shown, when the seat frame is unfolded, the front lower connecting rod 11 rotates counterclockwise and moves upward, driving the front upper connecting rod 12 to move through the hinge, and the front upper connecting rod 12 is hinged with the seat frame 2 to drive the seat frame 2 to lift upward;

[0036] 2) Since one end of the backrest connecting rod 3 is hinged with the front lower connecting rod 11 and the front upper connecting rod 12, when the front lower connecting rod 11 rotates counterclockwise, the backrest connecting rod 3 will be driven to move forward together, and the backrest connecting rod 3 will drive the backrest rod 4 to rotate clockwise around the seat frame 2 through the hinge, so that the backrest rod 4 is tilted;

[0037] 3) The clockwise rotation of the backrest rod 4 pushes the footrest connecting rod 5 forward through the hinge, and the footrest connecting rod 5 drives the rear rod 6 to move clockwise around the seat frame 2 through the hinge;

[0038] 4) The clockwise movement of the rear rod 6 pushes the upper connecting rod 7 forward through the hinge, thereby driving the middle rod 8 to rotate clockwise. The clockwise movement of the middle rod 8 also pushes the upper connecting rod 7 through the hinge, and the lower connecting rod 9 moves forward, thereby driving the front rod 10 clockwise to achieve the purpose of supporting the legs of the personnel. Figure 2 shown.

[0039] 5) When the seat frame is folded up, the front lower connecting rod 11 rotates clockwise and moves downward, and the above movement is reversed.

[0040] Preferably, since the above-mentioned connecting rods are interconnected, when selecting the driving rod, it is not limited to the front lower connecting rod 11 as the driving rod. Other connecting rods, such as the backrest rod 4, the rear rod 6, the middle rod 8, etc. can also be used as driving members. The specific driving method is not repeated here.

[0041] As a further preferred embodiment, the base 1 includes a vertical beam 101 and a horizontal beam 102 fixed to each other, and a first rotating seat 103 is fixedly arranged on both sides of the vertical beam 101, and a second rotating seat 201 and a third rotating seat 202 are fixedly arranged on the upper and lower sides of the end of the seat frame 2, and a fourth rotating seat 203 is fixedly arranged at the front end, the first rotating seat 103 is hinged to the third rotating seat 202, the second rotating seat 201 is hinged to the backrest mounting rod 4, and the fourth rotating seat 203 is hinged to the rear rod 6.

[0042] Specifically, Figure 3 As shown, the first rotating seat 103, the second rotating seat 201, the third rotating seat 202 and the fourth rotating seat 203 are fixed by bolts, and the structure is simple, and it is convenient to assemble, disassemble and maintain.

[0043] As a further preferred embodiment, the upper and lower sides of the end of the seat frame 2 are respectively hinged to the backrest rod 4 and the base 1 and the front upper connecting rod 12 is hinged.

[0044] As a further preferred embodiment, a rotating rod 41 is arranged between the backrest mounting rods 4, the end of the backrest connecting rod 3 is rotatably arranged on the rotating rod 41 and the front end is hinged to the connecting assembly.

[0045] As a further preferred embodiment, a driving motor 13 is provided on a side of the horizontal beam 102 away from the vertical beam 101 , and an output end of the driving motor 13 is drivingly connected to the lower end of the lower connecting rod 11 .

[0046] As a further preferred embodiment, a mounting groove 1001 is provided on the footrest 10 to facilitate the installation of the footrest pad.

[0047] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A multi-link adjustment mechanism for a seat, comprising: A base, a seat frame and a backrest assembly, wherein the backrest assembly includes a backrest connecting rod and a backrest mounting rod, and is characterized in that it also includes a footrest assembly and a connecting assembly that are hinged to each other; The footrest assembly comprises a footrest connecting rod, a rear rod, an upper connecting rod, a middle rod, a lower connecting rod and a footrest; The connecting assembly comprises a lower connecting rod and an upper connecting rod; The base, the seat frame, the backrest assembly and the footrest assembly are hinged to each other through a connecting assembly.

2. A seat multi-link adjustment mechanism according to claim 1, characterized in that: The two ends of the footrest connecting rod are respectively hinged to the backrest mounting rod and the rear rod, the upper end of the rear rod is hinged to the seat frame and the lower end is hinged to the upper connecting rod, the upper end of the middle rod is hinged to the bottom frame and the middle and lower ends are respectively hinged to the middle part of the upper connecting rod and the lower connecting rod, the upper end of the front rod is hinged to the upper connecting rod and the lower end is hinged to the lower connecting rod, the two ends of the lower connecting rod are respectively hinged to the front rod and the lower end of the middle rod, the upper end of the upper connecting rod is hinged to the front rod and the middle and lower ends are respectively hinged to the middle rod and the rear rod.

3. A seat multi-link adjustment mechanism according to claim 1, characterized in that: The base includes a vertical beam and a horizontal beam fixed to each other, a first rotating seat is fixedly provided on both sides of the vertical beam, a second rotating seat and a third rotating seat are fixedly provided on the upper and lower sides of the end of the seat frame respectively, and a fourth rotating seat is fixedly provided on the front end, the first rotating seat is hinged to the third rotating seat, the second rotating seat is hinged to the backrest mounting rod, and the fourth rotating seat is hinged to the rear rod.

4. The multi-link adjustment mechanism for a seat according to claim 1, characterized in that: The upper and lower sides of the seat frame end are respectively hinged to the backrest rod and the base, and the front end is hinged to the upper front connecting rod.

5. A multi-link seat adjustment mechanism according to claim 1 to 4, characterized in that: A rotating rod is arranged between the backrest mounting rods, the end of the backrest connecting rod is rotatably arranged on the rotating rod and the front end is hinged to the connecting assembly.

6. The multi-link adjustment mechanism for a seat according to claim 3, characterized in that: A driving motor is arranged on one side of the horizontal beam away from the vertical beam, and an output end of the driving motor is drivingly connected to the lower end of the lower connecting rod.

7. The multi-link adjustment mechanism for a seat according to claim 1, characterized in that: The foot rest is provided with a mounting groove.

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