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CN-224206492-U - Waist support assembly of seat and seat

CN224206492UCN 224206492 UCN224206492 UCN 224206492UCN-224206492-U

Abstract

The utility model discloses a waist support assembly of a seat and the seat, wherein the waist support assembly of the seat comprises a support, a front connecting rod, a rear connecting rod, an upper connecting rod, a lower connecting rod, a telescopic mechanism and a waist support, the upper connecting rod is fixed on the support, the upper end of the front connecting rod is hinged to the front end of the upper connecting rod, the rear connecting rod is positioned at the rear side of the front connecting rod, the upper end of the rear connecting rod is hinged to the rear end of the upper connecting rod, the lower end of the front connecting rod and the lower end of the rear connecting rod are hinged to the lower connecting rod, the front connecting rod, the rear connecting rod, the upper connecting rod and the lower connecting rod form a parallel four-bar mechanism together, the waist support is connected to the lower connecting rod, the telescopic mechanism comprises a first end, a second end and a locking piece, and the locking piece is used for locking the first end and the second end to keep relatively fixed, and unlocking the first end and the second end to enable the first end and the second end to move relatively. The utility model ensures that the waist support can be completely attached to the waist of a user when being adjusted to different positions, thereby improving the comfort of the seat.

Inventors

  • FENG XIAOWEI
  • Request for anonymity

Assignees

  • 杭州黑白调科技有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (10)

  1. 1. The waist support assembly of the seat is characterized by comprising a bracket, a front connecting rod, a rear connecting rod, an upper connecting rod, a lower connecting rod, a telescopic mechanism and a waist support; the upper connecting rod is fixed on the bracket, the upper end of the front connecting rod is hinged at the front end of the upper connecting rod, the rear connecting rod is positioned at the rear side of the front connecting rod, the upper end of the rear connecting rod is hinged at the rear end of the upper connecting rod, the lower end of the front connecting rod and the lower end of the rear connecting rod are both hinged on the lower connecting rod, and the front connecting rod, the rear connecting rod, the upper connecting rod and the lower connecting rod form a parallel four-connecting rod mechanism together; The telescopic mechanism comprises a first end hinged with the front connecting rod, a second end hinged with the bracket and a locking piece, wherein the locking piece is used for locking the first end and the second end so as to keep the first end and the second end relatively fixed and unlocking the first end and the second end so as to enable the first end and the second end to relatively move.
  2. 2. The lumbar support assembly of claim 1 wherein the telescoping mechanism includes a first movable seat and a second movable seat, the first movable seat and the second movable seat being nested together to allow relative sliding movement therebetween, the first movable seat being hinged to the front link via a first end and the second movable seat being hinged to the bracket via a second end.
  3. 3. The lumbar support assembly of claim 2 wherein the first movable seat is provided with a mating portion including a plurality of detents arranged sequentially from the first end toward the second end, and the locking member is disposed between the first movable seat and the second movable seat and movably coupled to the second movable seat so that the locking member can move between a first position engaged with one of the detents of the mating portion and a second position disengaged from the mating portion, and an elastic member is disposed between the locking member and the second movable seat for applying an elastic stress to the locking member so that the locking member always maintains a tendency toward the first position.
  4. 4. A lumbar support assembly of a seat as set forth in claim 3 wherein the latch member is provided with a tooth for engaging one of the detents when the latch member is in the first position to engage the latch member with the one of the detents, the tooth being engageable with the detent and configured to limit movement of the first movable seat toward the second end and to disengage the tooth from the detent when the first movable seat is moved away from the second end.
  5. 5. The lumbar support assembly of claim 4, wherein the first movable seat is provided with a first pushing part, a second pushing part and a third pushing part, the first pushing part, the matching part, the second pushing part and the third pushing part are sequentially arranged in the direction from the first end to the second end, the second movable seat is provided with a guide groove comprising a first section and a second section, the extending direction of the first section is consistent with the direction from the first end to the second end, the second section extends from one end of the first section close to the second end towards the direction close to the matching part, the guide post is arranged on the locking part and is embedded in the guide groove in a sliding mode, when the first movable seat moves to the direction away from the second end to contact with the locking part, the locking part is moved from the first position to the second position so that the guide post slides to the joint of the second section and the first section along the second section of the guide groove, the third section is used for enabling the pushing part to slide to contact with the first section towards the first end when the first movable seat moves towards the direction away from the second end, and the second pushing part is used for enabling the pushing part to slide to contact with the first end towards the first end.
  6. 6. The lumbar support assembly of claim 5 wherein the second movable seat is provided with a slide slot having an extension direction that is aligned with the extension direction of the first section of the guide slot, the slide slot being positioned on a side of the guide slot adjacent the second end, and the locking member is provided with a slide post that is embedded in the slide slot and configured to slide in the extension direction of the slide slot and to rotate in the slide slot.
  7. 7. The lumbar support assembly of claim 4 wherein the retention slot includes a blocking wall adjacent the first end and a ramped wall adjacent the second end, the teeth abutting the blocking wall when the teeth are retained in the retention slot to define a degree of freedom of movement of the blocking wall toward the second end by the engagement of the teeth with the blocking wall, the ramped wall being configured to eject the teeth from the retention slot when the first movable seat is moved away from the second end.
  8. 8. The lumbar support assembly of claim 1 wherein the lumbar support includes an outer frame, the front and rear links each being disposed between two vertical beams of the outer frame, the front and rear links each being inverted V-shaped to form a receiving space between the two and a bottom cross beam of the outer frame, the receiving space having a massage core mounted on the outer frame disposed therein.
  9. 9. The lumbar support assembly of claim 1 wherein a tension spring is disposed between the front link and the upper link for pulling the front link rearward; And/or, the waist support is provided with a mounting seat, the mounting seat is provided with two limiting walls which are staggered in the front-back direction, the mounting seat is pivoted with the lower connecting rod through a rotating shaft, the lower connecting rod is provided with a stop part arranged between the two limiting walls, the stop part is propped against the limiting wall positioned at the rear side, and a spring is clamped between the stop part and the limiting wall positioned at the front side.
  10. 10. A seat comprising a lumbar support assembly of a seat according to any one of claims 1-9.

Description

Waist support assembly of seat and seat Technical Field The utility model relates to the technical field of seats, in particular to a waist support assembly of a seat and the seat. Background In order to provide support for the waist of a user and avoid fatigue caused by hanging the waist, a plurality of existing office chairs and electronic racing chairs are generally provided with waist support components, the waist of the user is supported by the waist support components to relieve fatigue of the waist, the waist support components are arranged into adjustable structures in general, the waist support components can adapt to different sitting postures of the user and users with different body types, however, the conventional waist support components are usually arranged into a back-and-forth swinging adjusting mode when being adjusted, the adjusting mode is still difficult to meet the requirements of people due to the fact that the waist support is adjusted in a back-and-forth rotating mode when being adjusted, the supporting surface of the waist support cannot be well attached to the waist of the user after the waist support is adjusted to a specific angle, and the comfort of the waist support cannot be fully attached to the waist of the user when the waist support is swung to other angles. Disclosure of utility model The utility model aims to provide a waist support assembly of a seat and the seat, which are capable of adjusting the waist support in a translational mode, so that different sitting postures and body shapes of a user are met, and the waist support can be completely attached to the waist of the user when being adjusted to different positions. In order to achieve the above purpose, the utility model adopts the following technical scheme: the waist support component of the seat comprises a bracket, a front connecting rod, a rear connecting rod, an upper connecting rod, a lower connecting rod, a telescopic mechanism and a waist support; the upper connecting rod is fixed on the bracket, the upper end of the front connecting rod is hinged at the front end of the upper connecting rod, the rear connecting rod is positioned at the rear side of the front connecting rod, the upper end of the rear connecting rod is hinged at the rear end of the upper connecting rod, the lower end of the front connecting rod and the lower end of the rear connecting rod are both hinged on the lower connecting rod, and the front connecting rod, the rear connecting rod, the upper connecting rod and the lower connecting rod form a parallel four-connecting rod mechanism together; The telescopic mechanism comprises a first end hinged with the front connecting rod, a second end hinged with the bracket and a locking piece, wherein the locking piece is used for locking the first end and the second end so as to keep the first end and the second end relatively fixed and unlocking the first end and the second end so as to enable the first end and the second end to relatively move. Preferably, the telescopic mechanism comprises a first movable seat and a second movable seat, the first movable seat and the second movable seat are sleeved together so that the first movable seat and the second movable seat can slide relatively, the first movable seat is hinged with the front connecting rod through a first end, and the second movable seat is hinged with the bracket through a second end. Preferably, the first movable seat is provided with a matching part, the matching part comprises a plurality of clamping grooves which are sequentially arranged in the direction from the first end to the second end, the locking piece is positioned between the first movable seat and the second movable seat and is movably connected to the second movable seat so as to enable the locking piece to move between a first position meshed with one clamping groove of the matching part and a second position separated from the matching part, and an elastic piece is arranged between the locking piece and the second movable seat and is used for applying elastic stress to the locking piece so as to enable the locking piece to always keep the trend of moving towards the first position. Preferably, the locking piece is provided with a convex tooth which is used for being clamped into one of the clamping grooves when the locking piece is in the first position so as to enable the locking piece to be meshed with the clamping groove, the convex tooth is matched with the clamping groove and is configured to limit the first movable seat to move towards the direction close to the second end, and the convex tooth can be separated from the clamping groove when the first movable seat moves towards the direction far away from the second end. The first movable seat is provided with a first pushing part, a second pushing part and a third pushing part, the first pushing part, the matching part, the second pushing part and the third pushing part are sequentially arranged in the directi