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CN-116035378-B - Leg centering type support structure and seat support

CN116035378BCN 116035378 BCN116035378 BCN 116035378BCN-116035378-B

Abstract

The invention relates to a leg centering type support structure and a seat support, which comprises a leg assembly and a transmission assembly, wherein the transmission assembly is used for being connected between seat parts on two sides of a seat, the transmission assembly comprises a driving cross rod and a transmission cross rod, the leg assembly comprises a leg transmission rod and a leg driving rod, the leg transmission rod is connected between two end parts of the transmission cross rod, the leg driving rod is connected between two end parts of the driving cross rod, the middle part of the driving cross rod is used for being connected with an output end of the driving assembly, and the driving assembly is driven by the driving assembly to rotate forwards or backwards so as to drive the leg assembly to stretch. The leg centering support structure provided by the invention can hide the leg component in the middle, so that the leg component can be prevented from being clamped to foreign matters in the telescoping process, the overall structure of the seat is stronger, the safety of the seat is improved, and the appearance aesthetic property of the seat is improved.

Inventors

  • Cai Saijun
  • LI XIAOHONG
  • WU QIMING
  • ZHANG XIAOQIANG

Assignees

  • 锐迈科技股份有限公司

Dates

Publication Date
20260512
Application Date
20220916

Claims (11)

  1. 1. A leg centering support structure, characterized by comprising a leg assembly (1) and a transmission assembly (2), the transmission assembly (2) being for connection between two side seat assemblies (3) of a seat, the transmission assembly (2) comprising a drive crossbar (21) and a transmission crossbar (22); The leg assembly (1) comprises a leg transmission rod (11) and a leg driving rod (12), wherein the leg transmission rod (11) is connected between two ends of the transmission cross rod (22), and the leg driving rod (12) is connected between two ends of the driving cross rod (21); The transmission cross rod (22) is arranged in parallel with the driving cross rod (21) and is close to the front end of the seat assembly (3), the transmission cross rod (22) is connected with the leg transmission rod (11) at a first fixed point (221), the driving cross rod (21) is connected with the leg driving rod (12) at a second fixed point (211), the leg assembly (1) further comprises a first middle rod (13) and a second middle rod (14), and an included angle between a connecting line of the first fixed point (221) and the second fixed point (211) and a horizontal plane is not smaller than 0 degree; The first middle rod (13) is hinged with the leg transmission rod (11), a first hinge point (141) and a second hinge point (142) are arranged on the second middle rod (14), the second middle rod (14) is hinged with the leg transmission rod (12) at the first hinge point (141), the second middle rod (14) is cross-hinged with the middle part of the leg transmission rod (11) at the second hinge point (142), and the connecting lines of the first hinge point (141), the second hinge point (142), the first fixed point (221) and the second fixed point (211) form a quadrangle; the middle part of the driving cross rod (21) is used for being connected with the output end of the driving assembly (4) and driven by the driving assembly (4) to rotate forwards or backwards to drive the leg assembly (1) to stretch.
  2. 2. A leg centering support structure according to claim 1, characterized in that the second intermediate lever (14) is provided with a limiting member (143), the lower edge of the leg transmission lever (11) is provided with a first limiting surface (111) cooperating with the limiting member (143), and when the first limiting surface (111) abuts against the limiting member (143), the current position of the leg assembly (1) is the extreme position of the leg assembly (1) stretching.
  3. 3. A leg centering support structure according to claim 1, characterized in that the vertical distance from the plane of the second intermediate lever (14) to the inner side of the seat frame (31) of the seat assembly (3) on both sides is not less than 150mm.
  4. 4. A leg centering support structure as claimed in claim 1, wherein the leg assembly (1) further comprises a main foot rest (15), and wherein the ends of the first and second intermediate bars (13, 14) remote from the leg transmission bar (11) and leg drive bar (12) are hinged to the main foot rest (15), respectively.
  5. 5. A leg centering support structure as claimed in claim 4, wherein the leg assembly (1) further comprises a secondary foot rest (16) and a foot rest link (17), the secondary foot rest (16) being hinged to the primary foot rest (15), one end of the foot rest link (17) being hinged to a central portion of the secondary foot rest (16) and the other end being hinged to the first intermediate lever (13).
  6. 6. A seat support, characterized by comprising a seat assembly (3) and a leg centering support structure according to any one of claims 1-5, the seat assembly (3) comprising a seat frame (31), a first leg link (32), a second leg link (33) and a seat linkage assembly (34), the seat linkage assembly (34) being rotatably connected between the seat frame (31) and a seat armrest, the seat linkage assembly (34) being adapted to support and drive the seat frame (31) to move relative to the seat armrest; One end of the first connecting leg rod (32) is hinged with the seat frame (31) at a first end point (321), the other end of the first connecting leg rod is connected with the transmission cross rod (22) at a second end point (322), one end of the second connecting leg rod (33) is hinged with the front end of the seat frame (31) at a third end point (331), the other end of the second connecting leg rod is connected with the driving cross rod (21) at a fourth end point (332), and connecting lines of the first end point (321), the second end point (322), the fourth end point (332) and the third end point (331) form a quadrangle.
  7. 7. The seat support according to claim 6, wherein the seat linkage assembly (34) comprises a seat frame linkage assembly (341), the seat frame linkage assembly (341) comprising a first frame bar (3411), a middle linkage (3412) and a second frame bar (3413) hinged in sequence; The first connecting frame rod (3411) and the second connecting frame rod (3413) are hinged on the seat frame (31), and the first connecting frame rod (3411), the middle linkage piece (3412), the second connecting frame rod (3413) and the seat frame (31) form a four-bar mechanism.
  8. 8. A seat support according to claim 7, wherein the seat assembly (3) further comprises a leg linkage (35), the leg linkage (35) being hinged at one end to the second leg linkage (33) and at the other end to the intermediate linkage (3412).
  9. 9. The seat support according to claim 8, wherein the seat linkage assembly (34) further comprises a translating link assembly (342) and a side plate mount (343), the translating link assembly (342) being rotatably connected between the seat frame linkage assembly (341) and the side plate mount (343), the side plate mount (343) being for connection with a seat armrest.
  10. 10. The seat support according to claim 9, wherein the translating link assembly (342) comprises a first rocker (3421), a first intermediate link (3422), a second intermediate link (3423) and a second rocker (3424); the first rocker (3421) and the second rocker (3424) are both hinged on the side plate mounting (343), and the first intermediate link (3422) and the second intermediate link (3423) are hinged between the first rocker (3421) and the second rocker (3424).
  11. 11. The seat support according to claim 10, wherein the translating link assembly (342) further comprises a first connecting link (3425) and a second connecting link (3426); One end of the first connecting rod (3425) is hinged with the first rocker (3421), the other end of the first connecting rod is hinged with the middle linkage piece (3412), one end of the second connecting rod (3426) is respectively hinged with the first middle connecting rod (3422) and the second rocker (3424), and the other end of the second connecting rod is hinged with the middle linkage piece (3412).

Description

Leg centering type support structure and seat support Technical Field The invention relates to the technical field of sofa supports, in particular to a leg centering support structure and a seat support. Background With the improvement of living standard of people, functional sofas and seats are more and more common in life. As functional seats include lounges, armchairs, sofas, combination seats, cinema seats and seating units with moving seats. The functional seat with the telescopic device can be adjusted among the sitting position, the leisure position and the lying position through the telescopic device. The existing seat unit has the following defects that the legs of the traditional iron frame are required to be connected with the side plates at two sides to realize movement, are not detachable, can be completely seen from the side edges after being packaged on a sofa, and cannot match with the whole colors of the sofa, and the legs are at risk of clamping hands during the side edge telescopic movement. Disclosure of Invention In view of the foregoing problems of the prior art, it is an object of the present invention to provide a leg centering support structure and a seat support, in which a leg assembly is detachably mounted on a transmission assembly, the leg assembly moves centering, there is no risk of pinching hands during movement, the structure of the leg assembly cannot be observed on the side of a seat after mounting, and the overall structure of the seat is stronger and looks more beautiful. In order to solve the above-mentioned problems, the present invention provides, in a first aspect, a leg centering bracket structure including a leg assembly and a transmission assembly for connection between two side seat assemblies of a seat, the transmission assembly including a drive rail and a transmission rail; The leg assembly comprises a leg transmission rod and a leg driving rod, wherein the leg transmission rod is connected between two end parts of the transmission cross rod, the leg driving rod is connected between two end parts of the driving cross rod, and the middle part of the driving cross rod is used for being connected with the output end of the driving assembly and is driven by the driving assembly to rotate forwards or backwards so as to drive the leg assembly to stretch. Further, the drive rail is disposed parallel to the drive rail and proximate the front end of the seat assembly, the drive rail is connected to the leg drive bar at a first fixed point, and the drive rail is connected to the leg drive bar at a second fixed point. Further, the leg assembly further includes a first intermediate bar and a second intermediate bar; The first middle rod is hinged with the leg transmission rod, a first hinge point and a second hinge point are arranged on the second middle rod, the second middle rod is hinged with the leg driving rod at the first hinge point, the second middle rod is crossed and hinged with the middle part of the leg transmission rod at the second hinge point, and the connecting lines of the first hinge point, the second hinge point, the first fixed point and the second fixed point form a quadrangle. Further, the included angle between the connecting line of the first fixed point and the second fixed point and the horizontal plane is not smaller than 0 degree. Further, a limiting piece is arranged on the second middle rod, a first limiting surface matched with the limiting piece is arranged at the lower edge of the leg transmission rod, and when the first limiting surface is in contact with the limiting piece, the current position of the leg assembly is the limit position of the leg assembly stretching. Further, the vertical distance from the plane of the second middle rod to the inner side face of the seat frame of the seat assembly at both sides is not less than 150mm. Further, the leg assembly further includes a main foot rest, and ends of the first and second intermediate bars remote from the leg transfer bar and the leg drive bar are hinged with the main foot rest, respectively. Further, the leg assembly further comprises a secondary foot rest and a foot rest connecting rod, the secondary foot rest is hinged with the main foot rest, one end of the foot rest connecting rod is hinged with the middle part of the secondary foot rest, and the other end of the foot rest connecting rod is hinged with the first middle rod. The second aspect of the invention also provides a seat support, which comprises a seat assembly and the leg centering support structure, wherein the seat assembly comprises a seat frame, a first connecting leg rod, a second connecting leg rod and a seat linkage assembly, the seat linkage assembly is rotatably connected between the seat frame and a seat armrest, and the seat linkage assembly is used for supporting and driving the seat frame to move relative to the seat armrest; One end of the first connecting leg rod is hinged with the front end of the seat