A seat linkage bracket structure

Abstract

The present invention discloses a chair linkage support structure, comprising a linkage assembly, a seat frame and a backrest mounting member, wherein the backrest mounting member is rotatably connected to the seat frame via the linkage assembly; the linkage assembly comprises an assembly plate and a driving connecting rod, wherein the driving connecting rod is rotatably connected to the middle portion of the seat frame, the assembly plate comprises a side plate portion and a support portion, wherein one end of the side plate portion is connected to the driving connecting rod, the other end of the side plate portion is connected to one end of the support portion, and the other end of the support portion is connected to the backrest mounting member. The present invention reduces the number of linkage assembly parts, has a simple structure, occupies a small space, and compresses the overall height of the support structure, thereby reducing the seat height and improving the seat comfort.

Description

Technical Field

[0001] The invention relates to the field of furniture manufacturing, and in particular to a chair linkage bracket structure. Background Art

[0002] As people's living standards gradually improve, sofas, reclining chairs, office chairs, theater chairs and other seats have more and more functions. In order to solve the fatigue caused by long-term sitting and better relax the body, the requirements for the comfort and functionality of seats are getting higher and higher.

[0003] The mechanical extension devices of current functional sofas and seats generally have many parts, which leads to complex support structures, difficult production processes, and large seat footprints, which is not conducive to seat compression and affects the overall appearance. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the linkage bracket structure has many structural parts, a complex production process, is not conducive to the compression size of the seat, makes the seat occupy a large space, and affects the overall appearance.

[0005] The present invention provides a chair linkage bracket structure, comprising a linkage component, a seat frame and a backrest mounting component, wherein the backrest mounting component is rotatably connected to the seat frame through the linkage component; the linkage component comprises an assembly plate and a driving connecting rod, wherein the driving connecting rod is rotatably connected to the middle part of the seat frame, the assembly plate comprises a side plate portion and a supporting portion, wherein one end of the side plate portion is connected to the driving connecting rod, the other end of the side plate portion is connected to one end of the supporting portion, and the other end of the supporting portion is connected to the backrest mounting component.

[0006] Furthermore, it also includes a transmission assembly, the transmission assembly includes a first elastic member and a second elastic member;

[0007] The first elastic member is arranged between the pedal telescopic mechanism and the linkage assembly; the second elastic member is obliquely arranged between the seat frame and the side plate portion, one end of the second elastic member is connected to the side wall of the seat frame, and the other end of the second elastic member is connected to one end of the side plate portion close to the support portion.

[0008] Furthermore, one end of the first elastic member is connected to the pedal telescopic mechanism, and the other end of the first elastic member is connected to the side plate portion.

[0009] Further, the two ends of the side plate portion are respectively provided with a first pivot point and a second pivot point;

[0010] The side plate portion is connected to the driving connecting rod via a first pivot point, and the side plate portion is bent and connected to the supporting portion via a second pivot point.

[0011] Furthermore, the side plate portion is fixedly connected to the support portion or is integrally bent into an L-shape.

[0012] Furthermore, the angle between the side plate portion and the support portion is 90°-100°.

[0013] Furthermore, a first fixing member is also provided on the side plate portion;

[0014] A ratio of a distance from the first fixing member to the first pivot point to a distance from the first fixing member to the second pivot point is greater than 1, and the first fixing member is used to connect to one end of the first elastic member.

[0015] Furthermore, a second fixing member is also provided on the side plate portion;

[0016] A ratio of a distance from the second fixing member to the first pivot point to a distance from the second fixing member to the second pivot point is greater than 2, and the second fixing member is used to connect to one end of the second elastic member.

[0017] Further, the footrest telescopic mechanism comprises a connecting rod assembly, a main footrest member and an auxiliary footrest assembly, and the connecting rod assembly is used to drive the main footrest member and the auxiliary footrest assembly to extend or contract relative to the seat frame;

[0018] The connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the first connecting rod is connected to the second connecting rod, the third connecting rod is connected to the fourth connecting rod, the middle part of the second connecting rod is cross-connected with the middle part of the third connecting rod, the first connecting rod and the third connecting rod are respectively connected to the seat frame, and the second connecting rod and the fourth connecting rod are respectively connected to the main footrest.

[0019] Furthermore, the pedal telescopic mechanism also includes a transmission connecting member;

[0020] The transmission connecting member is arranged at one end where the pedal telescopic mechanism is connected to the transmission assembly, one end of the transmission connecting member is rotationally connected to the first connecting rod, and the other end of the transmission connecting member is used to connect to the first elastic member.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The invention has a small number of parts, a simple structure, and occupies a small space. The overall height of the support structure is compressed, so that the seat height is reduced and the seat comfort is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical methods in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a seat linkage bracket structure according to an embodiment of the present invention;

[0025] Figure 2 It is a structural diagram of the linkage component of an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the seat linkage support structure in an extended position according to an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the seat frame, linkage assembly, transmission assembly and backrest mounting member in a lying position according to an embodiment of the present invention;

[0028] Figure 5 For the embodiment of the present invention Figure 1 Another direction diagram;

[0029] Figure 6 A side view of a seat linkage support structure according to an embodiment of the present invention in a sitting position;

[0030] Figure 7 A side view of the seat linkage support structure in the extended position according to an embodiment of the present invention;

[0031] Figure 8 A side view of a seat linkage support structure in a lying position according to an embodiment of the present invention;

[0032] Fig. 9 It is a structural schematic diagram of a seat linkage bracket structure, an armrest frame and a backrest frame according to an embodiment of the present invention;

[0033] Fig.10 is a schematic diagram of an existing seat linkage bracket structure;

[0034] Fig.11 This is a structural comparison diagram between the existing seat linkage bracket structure and this embodiment.

[0035] In the figure: 1-linkage assembly, 2-transmission assembly, 21-first elastic member, 22-second elastic member, 10-assembly plate, 11-driving connecting rod, 12-side plate portion, 13-support portion, 3-seat frame, 4-backrest mounting member, 5-foot pedal telescopic mechanism, 121-first pivot point, 122-second pivot point, 123-first fixing member, 124-second fixing member, 41-first section, 42-second section, 43-third section, 51-connecting rod assembly, 511-first connecting rod, 512-second connecting rod, 513-third connecting rod, 514-fourth connecting rod, 52-main footrest member, 53-secondary footrest assembly, 531-secondary footrest member, 532-footrest connecting rod, 54-transmission connecting member, 6-mounting cross bar, 7-driving cross bar, 8-connecting rod member, 200-armrest frame, 400-backrest frame. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0038] In addition, in the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The seat linkage bracket structure of the present invention can be applied to seats such as sofas, office chairs, and leisure chairs. The seat of this embodiment can be adjusted between three positions: sitting, stretched, and lying. In the sitting position, the backrest remains upright relative to the seat frame; in the stretched position, the footrest telescopic mechanism extends forward; in the lying position, the footrest telescopic mechanism and the seat frame rotate upward relative to the stretched position, the backrest mounting part rotates backward relative to the seat frame, and the backrest and the seat frame form an obtuse angle relationship, so that the seat is adjusted to a tilted lying position.

[0040] Example

[0041] like Figure 1-5As shown, an embodiment of the present invention provides a seat linkage bracket structure, including a linkage component 1, a seat frame 3 and a backrest mounting component 4, wherein the backrest mounting component 4 is rotatably connected to the seat frame 3 through the linkage component 1; the linkage component 1 includes an assembly plate 10 and a driving link 11, wherein the driving link 11 is rotatably connected to the middle part of the seat frame 3, the assembly plate 10 includes a side plate portion 12 and a support portion 13, the side plate portion 12 is arranged below the seat frame 3, one end of the side plate portion 12 is connected to the driving link 11, the other end of the side plate portion 12 is connected to one end of the support portion 13, and the other end of the support portion 13 is connected to the backrest mounting component 4.

[0042] Specifically, the side panel portion 12 and the support portion 13 are fixedly connected or integrally bent into an L-shape. The angle between the side panel portion 12 and the support portion 13 is 90°-100°. Specifically, the side panel portion 12 and the support portion 13 can be two separate parts, which are fixedly connected by fasteners, and the material utilization rate can be improved during the production process. In some embodiments, the side panel portion 12 and the support portion 13 can also be an L-shaped assembly formed by integral bending, and can be integrally forged, and the production steps are reduced. In the present embodiment, the support portion 13 extends in the direction of the side panel portion 12 and is fixedly connected to a position close to the middle of the side panel portion 12, and forms a bent shape, which can increase the overall structural strength of the linkage assembly.

[0043] Specifically, the seat linkage support structure further includes a transmission assembly 2, and the transmission assembly 2 includes a first elastic member 21 and a second elastic member 22; the first elastic member 21 is arranged between the foot pedal telescopic mechanism 5 and the linkage assembly 1, and specifically, one end of the first elastic member 21 is connected to the foot pedal telescopic mechanism 5, and the other end of the first elastic member 21 is connected to the side plate portion 12; the second elastic member 22 is obliquely arranged between the seat frame 3 and the side plate portion 12, one end of the second elastic member 22 is connected to the side wall of the seat frame 3, and the other end of the second elastic member 22 is connected to one end of the side plate portion 12 close to the support portion 13. The second elastic member 22 is used to maintain elastic restoring force between the seat frame 3 and the side plate portion 12.

[0044] Specifically, in the present embodiment, the linkage assembly 1 is disposed between the seat frame 3 and the backrest mounting member 4, and is used to support and drive the backrest mounting member 4 to rotate relative to the seat frame 3 during the seat position adjustment process. During the extension process of the seat, the seat frame is driven to tilt and rotate upward by the foot pedal telescopic mechanism 5, and the foot pedal telescopic mechanism 5 is tightened by the first elastic member 21. When the seat is retracted from the lying position, the seat frame is smoothly rotated and retracted under the elastic restoring force of the second elastic member and its own gravity. In the present embodiment, the first elastic member 21 and the second elastic member 22 may be spring members with elastic restoring force, and both ends of the spring members have hooks or hanging rings, and in some embodiments, they may also be structures such as elastic ropes or elastic zippers.

[0045] Specifically, the two ends of the side plate portion 12 are respectively provided with a first pivot point 121 and a second pivot point 122; the side plate portion 12 is connected to the driving link 11 via the first pivot point 121, and the side plate portion 12 is bent and connected to the support portion 13 via the second pivot point 122. In practical applications, the side plate portion 12 is used to be fixedly connected to the seat armrests on both sides, and the side plate portion 12 is provided with a mounting hook, a positioning hole or a positioning column for connecting to the seat armrest frame.

[0046] Specifically, a first fixing member 123 is further provided on the side plate portion 12; the ratio of the distance between the first fixing member 123 and the first pivot point 121 to the distance between the first fixing member 123 and the second pivot point 122 is greater than 1, and the first fixing member 123 is used to connect with one end of the first elastic member 21. Specifically, a second fixing member 124 is further provided on the side plate portion 12; the ratio of the distance between the second fixing member 124 and the first pivot point 121 to the distance between the second fixing member 124 and the second pivot point 122 is greater than 2, and the second fixing member 124 is used to connect with one end of the second elastic member 22. Specifically, the distance between the second fixing member 124 and the second pivot point 122 is closer, and the fixing position of the second fixing member 124 is close to the lower edge of the side plate portion 12. The first fixing member and the second fixing member can be fixing nails, fixing hooks, fixing pins or other parts with fixing or hanging functions.

[0047] Specifically, the backrest mounting member 4 includes a first section 41, a second section 42 and a third section 43 that are integrally bent and formed; the first section 41 is rotatably connected to the side of the seat frame 3, the second section 42 is rotatably connected to the support portion 13, and the third section 43 is used to connect to the backrest frame of the seat. Specifically, the third section of the backrest mounting member 41 can be configured as a plug-in sheet structure that can be plug-connected to the backrest frame of the seat. The backrest mounting member 4 can also be bent into a Z-shaped mounting member.

[0048] Specifically, the footrest retractable mechanism 5 includes a connecting rod assembly 51, a main footrest 52 and an auxiliary footrest assembly 53, and the connecting rod assembly 51 is used to drive the main footrest 52 and the auxiliary footrest assembly 53 to extend or contract relative to the seat frame 3; the connecting rod assembly 51 includes a first connecting rod 511, a second connecting rod 512, a third connecting rod 513 and a fourth connecting rod 514, the first connecting rod 511 is connected to the second connecting rod 512, the third connecting rod 513 is connected to the fourth connecting rod 514, the middle part of the second connecting rod 512 is cross-connected with the middle part of the third connecting rod 513, the first connecting rod 511 and the third connecting rod 513 are respectively connected to the seat frame 3, and the second connecting rod 512 and the fourth connecting rod 514 are respectively connected to the main footrest 52. Specifically, the pedal telescopic mechanism 5 also includes a transmission connecting member 54; the transmission connecting member 54 is arranged at one end of the pedal telescopic mechanism 5 connected to the transmission assembly 2, one end of the transmission connecting member 54 is rotatably connected to the first connecting rod 511, and the other end of the transmission connecting member 54 is used to connect to the first elastic member 21.

[0049] Specifically, the auxiliary footrest assembly includes an auxiliary footrest member 531 and a footrest connecting rod 532, wherein the auxiliary footrest member 531 is connected to the main footrest member 52, and the auxiliary footrest member 532 is connected to the fourth connecting rod 514 through the footrest connecting rod 532. In this embodiment, the main footrest member 52 and the auxiliary footrest member 532 are used to install the main footrest and the auxiliary footrest, respectively. In some embodiments, the pedal telescopic mechanism 5 may also have different numbers of footrests, such as one, two or three, and the extension length of the pedal telescopic mechanism is also different.

[0050] Specifically, the pedal telescopic mechanism 5 also includes a transmission connecting member 54, which is arranged at one end of the pedal telescopic mechanism 5 connected to the transmission assembly 2, one end of the transmission connecting member 54 is rotatably connected to the first connecting rod 511, and the other end of the transmission connecting member 54 is used to connect to the first elastic member 21.

[0051] Specifically, the linkage assembly 1, transmission assembly 2, seat frame 3, backrest mounting member 4 and footrest telescopic mechanism 5 of the chair linkage support structure of this embodiment are all two groups, and are arranged opposite to each other. A mounting crossbar 6, a driving crossbar 7 and a driving mechanism (not shown in the figure) are also arranged in the middle of the support structure. The two ends of the mounting crossbar 6 are respectively connected to the support parts 13 at the two ends through adapters; the two ends of the driving crossbar 7 are respectively connected to the middle parts of the two first connecting rods 511, and the driving mechanism is arranged between the driving crossbar 7 and the mounting crossbar 6 to enable the seat to move between the sitting position, the stretching position and the lying position. Specifically, the driving mechanism is a linear drive, which can be a push rod motor structure, wherein the motor end of the driving mechanism is connected to the mounting crossbar 6 through a mounting member, and the push rod end of the driving mechanism is connected to the driving crossbar 7 through a mounting member. The chair linkage support structure of the present invention is a motor-driven support structure.

[0052] Specifically, Figure 6-8 The three positions of the seat linkage support structure are shown in the figure. In practical application, the driving mechanism can be controlled by a remote control or a switch button to drive the seat linkage support structure to adjust the position of the sitting position, the stretched position and the lying position. When the seat is adjusted from the sitting position to the stretched position, the push rod of the driving mechanism pushes the driving cross bar forward, and the driving cross bar drives the foot pedal telescopic mechanism 5 to extend forward, and the linkage assembly and the backrest mounting member are fixed. When the seat is adjusted from the stretched position to the lying position, the driving mechanism continues to operate and the push rod is fully extended, pushing the driving cross bar 7 and the foot pedal telescopic mechanism 5 to extend upward, driving the seat frame 3 to rotate upward, so that the first elastic member is tightened, and the backrest mounting member is rotated downward and backward. When adjusting and retracting from the lying position, since the head is raised and the upper body is upright when sitting up, the seat frame is rotated downward and retracted under the elastic restoring force of the second elastic member and the body's own gravity, so that the backrest mounting member 4 is rotated and retracted first, and then the foot pedal telescopic mechanism 5 is retracted. In the lying position, since the first elastic member tightly pulls the foot pedal telescopic mechanism, the backrest mounting member is retracted first, and then the foot pedal telescopic mechanism is retracted. During the process, the first elastic member and the second elastic member with elastic force can make the seat bracket more smoothly in the process of position adjustment, and the second elastic member ensures the movement sequence of the backrest mounting member and the footrest telescopic mechanism during the expansion and retraction of the seat.

[0053] Specifically, Fig. 9 As shown, the seat linkage support structure of the present invention is fixed in the armrest frames on both sides of the seat, and is made into a sofa or leisure seat by installing the armrest frame 200, the backrest frame 400 and the seat frame, and then soft-packing and decorating. It should be noted that the assembly plate of this embodiment is respectively connected to the armrest frames on both sides and is fixed. The backrest frame 400 can be set as a T-shaped frame when viewed from the front of the seat, so that the two protruding ends of the T-shaped backrest frame do not interfere with the left and right armrest frames, so that the T-shaped backrest frame 400 can rotate around the armrest frame.

[0054] like Fig.10 As shown, the seat linkage support structure of the embodiment of the present invention reduces the connecting rod 8 compared with the prior art. One end of the connecting rod 8 is connected to the driving connecting rod, and the other end is connected to the supporting part. The seat support structure of the prior art requires two motors to drive the footrest extension mechanism and the backrest mechanism respectively, and the adjustment sequence is controlled by the motor. The support structure of the present invention only needs a single motor drive.

[0055] like Fig.11 As shown, compared with the original seat bracket, the seat bracket of the present invention has fewer parts in the linkage assembly, the backrest assembly is optimized to have only one backrest mounting part, and the height of the seat bracket is significantly reduced. As shown in the figure, the height dimension compression is greater than 2 cm.

[0056] The invention has a small number of parts, a simple structure, and occupies a small space. The overall height of the support structure is compressed, so that the seat height is reduced and the seat comfort is improved.

[0057] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modification, equivalent substitution, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A seat linkage bracket structure, characterized in that: It comprises a linkage assembly (1), a seat frame (3) and a backrest mounting member (4), wherein the backrest mounting member (4) is rotatably connected to the seat frame (3) via the linkage assembly (1); The linkage assembly (1) comprises an assembly plate (10) and a driving connecting rod (11), wherein the driving connecting rod (11) is rotatably connected to the middle portion of the seat frame (3), and the assembly plate (10) comprises a side plate portion (12) and a supporting portion (13). One end of the side plate portion (12) is connected to the driving connecting rod (11), the other end of the side plate portion (12) is fixedly connected to one end of the support portion (13), and the other end of the support portion (13) is connected to the backrest mounting member (4); the support portion (13) extends in the direction of the side plate portion (12) and is fixedly connected to a position close to the middle of the side plate portion (12), and forms a bent shape to increase the overall structural strength of the linkage assembly (1); the angle between the side plate portion (12) and the support portion (13) is 90°-100°; The backrest mounting member 4 comprises a first section (41), a second section (42) and a third section (43) which are integrally bent and formed; the first section (41) is rotationally connected to the side of the seat frame (3), the second section (42) is rotationally connected to the support portion (13), and the third section (43) is used to connect to the backrest frame of the seat.

2. A seat linkage bracket structure according to claim 1, characterized in that: It also includes a transmission assembly (2), wherein the transmission assembly (2) includes a first elastic member (21) and a second elastic member (22); The first elastic member (21) is arranged between the footrest telescopic mechanism (5) of the seat and the linkage assembly (1); the second elastic member (22) is arranged obliquely between the seat frame (3) and the side plate portion (12); one end of the second elastic member (22) is connected to the side wall of the seat frame (3), and the other end of the second elastic member (22) is connected to one end of the side plate portion (12) close to the support portion (13).

3. A seat linkage bracket structure according to claim 2, characterized in that: One end of the first elastic member (21) is connected to the pedal telescopic mechanism (5), and the other end of the first elastic member (21) is connected to the side plate portion (12).

4. A seat linkage bracket structure according to claim 2, characterized in that: The two ends of the side plate portion (12) are respectively provided with a first pivot point (121) and a second pivot point (122); The side plate portion (12) is connected to the driving connecting rod (11) via a first pivot point (121), and the side plate portion (12) is bent and connected to the supporting portion (13) via a second pivot point (122).

5. A seat linkage bracket structure according to claim 4, characterized in that: A first fixing member (123) is also provided on the side plate portion (12); The ratio of the distance from the first fixing member (123) to the first pivot point (121) to the distance from the first fixing member (123) to the second pivot point (122) is greater than 1, and the first fixing member (123) is used to connect to one end of the first elastic member (21).

6. A seat linkage bracket structure according to claim 4, characterized in that: A second fixing member (124) is also provided on the side plate portion (12); The ratio of the distance from the second fixing member (124) to the first pivot point (121) to the distance from the second fixing member (124) to the second pivot point (122) is greater than 2, and the second fixing member (124) is used to connect to one end of the second elastic member (22).

7. The seat linkage bracket structure according to claim 2, characterized in that: The footrest retractable mechanism (5) comprises a connecting rod assembly (51), a main footrest member (52) and an auxiliary footrest assembly (53); the connecting rod assembly (51) is used to drive the main footrest member (52) and the auxiliary footrest assembly (53) to extend or retract relative to the seat frame (3); The connecting rod assembly (51) comprises a first connecting rod (511), a second connecting rod (512), a third connecting rod (513) and a fourth connecting rod (514); the first connecting rod (511) is connected to the second connecting rod (512); the third connecting rod (513) is connected to the fourth connecting rod (514); the middle part of the second connecting rod (512) is cross-connected with the middle part of the third connecting rod (513); the first connecting rod (511) and the third connecting rod (513) are respectively connected to the seat frame (3); and the second connecting rod (512) and the fourth connecting rod (514) are respectively connected to the main footrest (52).

8. The seat linkage bracket structure according to claim 7, characterized in that: The pedal telescopic mechanism (5) further comprises a transmission connecting member (54); The transmission connecting member (54) is arranged at one end of the pedal telescopic mechanism (5) connected to the transmission assembly (2); one end of the transmission connecting member (54) is rotatably connected to the first connecting rod (511); and the other end of the transmission connecting member (54) is used to be connected to the first elastic member (21).

Images