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CN-121987040-A - Chair waist lock assembly and chair

CN121987040ACN 121987040 ACN121987040 ACN 121987040ACN-121987040-A

Abstract

The invention belongs to the technical field of seats, and particularly relates to a chair lumbar support lock assembly and a chair, which comprise two swinging type lock pieces at least partially arranged on the same axis, wherein an interlocking structure for alternately switching locking positions and unlocking positions is arranged between one ends of the two swinging type lock pieces, which are far away from the same axis, at least part of the interlocking structure is arranged on one swinging type lock piece, the rest part of the interlocking structure is arranged on the other swinging type lock piece, one end of the swinging type lock piece, which is close to the interlocking structure, is also provided with a locking canceling control structure for forcing the interlocking structure to cancel locking, and is also provided with a locking control structure for forcing the interlocking structure to be in the locking position again, and an elastic piece is arranged between the two swinging type lock pieces. Through the interlocking structure arranged between the two swinging type locking pieces, the two swinging type locking pieces are arranged around the same axle center, so that the stress of the whole structure is more balanced.

Inventors

  • ZHANG LIANCHEN

Assignees

  • 安吉锐星家具有限公司

Dates

Publication Date
20260508
Application Date
20251230

Claims (10)

  1. 1. The chair waist leans on lock assembly, its characterized in that includes two swing formula locking piece (1) that at least partly set up in same axle center, two be equipped with between the one end that swing formula locking piece (1) kept away from same axle center is in the interlocking structure that locks the position and cancel the position and switch alternately, at least part of interlocking structure locates on one of them swing formula locking piece (1), the remainder of interlocking structure locates on another swing formula locking piece (1), swing formula locking piece (1) is close to the one end of interlocking structure still has the cancellation locking control structure who forces the interlocking structure cancellation locking, and still has the locking control structure who forces the interlocking structure to be in the position again, is equipped with elastic component (2) between two swing formula locking piece (1).
  2. 2. The chair lumbar lock assembly according to claim 1, wherein the interlocking structure is a double interlocking structure, wherein one of the interlocking structures is provided on one side surface of the two swinging lock pieces (1), and the other interlocking structure is provided on the other side surface of the two swinging lock pieces (1), and the one side surface and the other side surface are distributed in the same axial direction.
  3. 3. Lumbar lock assembly according to claim 1, characterized in that both said swinging locks (1) form an obtuse or right angle when locked and an acute angle when unlocked.
  4. 4. The chair lumbar lock assembly according to claim 1, wherein said interlocking structure comprises a locking arm (11) and a locking slot (12), any one of said locking arm (11) and said locking slot (12) being provided on one of said swinging locks (1), the remaining one being provided on the other of said swinging locks (1).
  5. 5. The chair lumbar lock assembly according to claim 4, wherein the two swinging lock pieces (1) are respectively provided with locking arms (11) with opposite directions, and the two swinging lock pieces (1) are respectively provided with locking slots (12) with misplacement, and one locking arm (11) corresponds to one locking slot (12).
  6. 6. The chair lumbar lock assembly according to claim 1, wherein the unlocking control structure comprises unlocking inclined planes (13) respectively arranged on the inner sides of one ends of the swing type lock (1) far away from the same axis, and the two unlocking inclined planes (13) are arranged in an angle.
  7. 7. The chair lumbar lock assembly according to claim 6, wherein the locking control structure comprises locking driving inclined planes (14) respectively arranged at the outer sides of one ends of the swing type locking pieces (1) far away from the same axis, and the two locking driving inclined planes (14) are arranged at an angle.
  8. 8. Lumbar lock assembly according to claim 7, characterized in that said cancellation ramp (13) and said locking drive ramp (14) provided on the same oscillating lock (1) are distributed in parallel.
  9. 9. The lumbar support lock assembly according to any one of claims 1-8, further comprising a movable housing (3), wherein a movement travel space (4) into which the swinging lock (1) is placed is provided in the movable housing (3), wherein a rack portion (41) capable of engaging with the engagement teeth (15) of the swinging lock (1) is provided in the movement travel space (4), wherein the movable housing (3) is in the locked position with respect to the swinging lock (1) when the rack portion (41) is engaged with the engagement teeth (15), wherein a cancel lock trigger portion (42) capable of contacting with the cancel lock control structure is provided in the movable housing (3), and wherein a lock trigger portion (43) capable of contacting with the lock control structure is further provided in the movable housing (3).
  10. 10. Chair comprising a swivel chair and a lumbar support provided on the backrest of the chair, characterized in that a chair lumbar support lock assembly according to claim 9 is provided between the lumbar support and the backrest.

Description

Chair waist lock assembly and chair Technical Field The invention belongs to the technical field of seats, and particularly relates to a chair lumbar support lock assembly and a chair. Background With the increase of working and travel time of people, the sitting posture is kept for a long time to be normal. The comfort and ergonomic properties of seats, which are important carriers for long-term human contact, are becoming more and more important. The lumbar part is used as a key part of the bearing and activity of the spine, and if the effective support is lacking, the fatigue, the ache and even the diseases related to the spine of the lumbar part are easily caused, so that the arrangement of lumbar support or a lumbar support structure in various seats has become a common requirement. In the prior art, the seat lumbar support is usually arranged inside a backrest, supports the waist of a user through an elastic member, a supporting plate or an adjusting mechanism, adopts an adjustable design for part of lumbar support structure, and realizes front-back or up-down adjustment through a knob, a pull rod, a motor and the like so as to improve adaptability and comfort. The waist rest movable adjusting structure comprises a backrest frame and a waist rest body arranged on the front side of the backrest frame, wherein the backrest frame is rotatably connected with a movable seat, the movable seat is provided with an adjusting seat, one end of the adjusting seat can be installed on the movable seat in a vertically sliding mode, the other end of the adjusting seat is rotatably connected with the back face of the waist rest body, and a waist rest locking structure used for fixing the position of the waist rest body after the waist rest body is adjusted is arranged between the movable seat and the adjusting seat. According to the utility model, the movable seat, the adjusting seat and the lumbar support locking structure are arranged on the backrest frame, so that the lumbar support body can be adjusted in height and angle, the lumbar support position can be conveniently adjusted according to actual requirements by a user, the lumbar of the user can be well supported, the requirements of different users can be met, and the purpose of improving the use experience effect of the user can be achieved. In the scheme, the lifting adjustment of the waist rest is finished by virtue of the movable lock piece, the pressure of the waist rest is all concentrated on the movable lock piece when the waist rest is locked, and the movable lock piece is used for obliquely extruding the locking rotating shaft, so that the locking rotating shaft is continuously subjected to unilateral pressure, the whole locking part is abutted against the rail on one side, the aging deformation of the locking part and the matched movable rail is caused for a long time, and the adjustment smoothness and the supporting stability of the waist rest are further influenced. Disclosure of Invention The invention aims to solve the problems and provides a chair lumbar lock assembly and a chair capable of solving the technical problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: The chair waist leans on the lock assembly, including two swing formula locking parts that at least partly set up in same axle center, two swing formula locking parts keep away from be equipped with between the one end of same axle center and be equipped with the interlocking structure that is used for locking position and cancel the locking position and switch alternately, at least part of interlocking structure is located on one of them swing formula locking part, the remainder of interlocking structure is located on another swing formula locking part the swing formula locking part is close to the one end of interlocking structure still has forces the interlocking structure cancel locking control structure, and still has forces the interlocking structure is in the locking control structure of locking position again, is equipped with the elastic component between two swing formula locking parts. In the chair lumbar lock assembly, the interlocking structure is a double interlocking structure, wherein one interlocking structure is arranged on one side surface of the two swinging type locking pieces, the other interlocking structure is arranged on the other side surface of the two swinging type locking pieces, and the one side surface and the other side surface are distributed in the same axis direction. In the chair lumbar lock assembly, the two swing locks form an obtuse angle or a right angle when locked and an acute angle when unlocked. In the chair lumbar support lock assembly, the interlocking structure comprises a locking arm and a locking groove, any one of the locking arm and the locking groove is arranged on one swing type lock piece, and the rest is arranged on the other swing type lock piece. In the chair waist rest loc