Search

CN-224219776-U - Chair back waist support adjusting mechanism

CN224219776UCN 224219776 UCN224219776 UCN 224219776UCN-224219776-U

Abstract

The utility model relates to the technical field of waist support, and discloses a chair back waist support adjusting mechanism which comprises a back plate, wherein a plurality of arc-shaped steel plates are arranged on the supporting end surface of the back plate at equal intervals, linkage sliding blocks are integrally formed at two ends of each arc-shaped steel plate, limiting sliding ways for the linkage sliding blocks to penetrate through are formed in positions, opposite to each linkage sliding block, on the back plate, of the back plate, and a bidirectional driving assembly for driving the linkage sliding blocks to lift is arranged on one end surface, far away from elastic mesh cloth, of the back plate. This back of chair waist support adjustment mechanism carries out quick adjustment through the radian of two-way drive assembly to the arc steel sheet, can be according to self condition, light, adjust the crooked radian of arc steel sheet fast, makes its perfect laminating self waist curve, effectively alleviates different crowds' back pressure, provides the proper holding power, helps maintaining the normal physiology bending of lumbar vertebrae, disperses lumbar disc pressure to support the arc steel sheet through the stay in step, do benefit to the stability and the life of increase of service.

Inventors

  • WANG WEI
  • LI YONG
  • XUE XIUXIA
  • LI XIAOJING

Assignees

  • 石家庄奥非特进出口有限公司

Dates

Publication Date
20260512
Application Date
20250703

Claims (6)

  1. 1. The chair back waist support adjusting mechanism comprises a back plate (1) and is characterized in that a plurality of arc-shaped steel plates (2) are arranged on the supporting end surface of the back plate (1) at equal intervals, and elastic mesh cloth (3) is arranged between the arc-shaped end surfaces of the arc-shaped steel plates (2); The two ends of the arc-shaped steel plate (2) are integrally formed and provided with linkage sliding blocks (4), a limiting slideway (5) for the linkage sliding blocks (4) to pass through is formed in the position, opposite to each linkage sliding block (4), of the back plate (1), and a bidirectional driving assembly (6) for driving the linkage sliding blocks (4) to lift is mounted on one end face, far away from the elastic mesh (3), of the back plate (1); One side of the back plate (1) close to the arc-shaped steel plate (2) is provided with a one-way driving assembly (7) linked with the two-way driving assembly (6), and the movable end of the one-way driving assembly (7) is fixedly connected with a stay (8).
  2. 2. The chair back waist support adjusting mechanism according to claim 1, wherein a rubber layer (9) is adhered to the arc-shaped edge of the stay (8).
  3. 3. The chair back waist support adjusting mechanism according to claim 2, wherein the bidirectional driving assembly (6) comprises a polish rod (61) fixed on one side, far away from one end face of the arc-shaped steel plate (2), of the back plate (1), and two screw rods (64) rotatably installed on the other side, far away from one end face of the back plate (1), of the back plate, simultaneously, the screw directions of the two screw rods (64) are opposite, a transmission bar (62) is arranged in a transmission design between the polish rod (61) and the screw rods (64), a sliding hole sliding with the polish rod (61) is formed in one end of the transmission bar (62), and a threaded hole in threaded connection with the screw rods (64) is formed in the other end of the transmission bar (62).
  4. 4. A chair back waist support adjusting mechanism according to claim 3, wherein the unidirectional driving assembly (7) comprises a threaded sleeve (71) fixed at one end of the stay (8) far away from the arc-shaped steel plate (2), a threaded rod (72) is arranged in the threaded sleeve (71) in a threaded manner, and the threaded rod (72) is rotatably arranged on the back plate (1).
  5. 5. The waist support adjusting mechanism of the chair back of claim 4, wherein the stay (8) is fixed with a positioning sleeve (75) on two sides close to one end face of the threaded sleeve (71), a positioning rod (74) is slidably arranged in the positioning sleeve (75), and one end, far away from the stay (8), of the positioning rod (74) is fixed on the back plate (1).
  6. 6. The chair back waist support adjusting mechanism according to claim 5, wherein one end of the threaded rod (72) far away from the threaded sleeve (71) is sleeved with a turbine (73), a worm (65) meshed with the turbine (73) is fixed between the opposite ends of the two screw rods (64), and a knob (63) is sleeved at the top end of the screw rod (64) close to the upper side.

Description

Chair back waist support adjusting mechanism Technical Field The utility model relates to the technical field of waist support, in particular to a chair back waist support adjusting mechanism. Background With the change of modern life style, sedentary office, learning and leisure scenes are becoming more common, and lumbar vertebra health problems are becoming a focus of social attention. The waist support cushion is used as an important accessory of a seat, and has the core functions of relieving lumbar vertebra pressure, improving sitting posture fatigue and preventing spinal diseases by a support design of fitting the physiological curvature of the human spinal column. Traditional waist support cushion adopts singly to predetermine radian or sectional type fixed knot to construct more, can't carry out dynamic adaptation according to user's body type difference or backbone health status, when cushion radian and the actual physiology curvature mismatch of user's waist, can't provide effectual supporting point, can lead to supporting effect two poles of the earth differentiation, or support inadequately and initiate tiredly, or excessive roof pressure causes the discomfort, is difficult to satisfy the support demand of differentiation simultaneously. Disclosure of utility model The present utility model has been made in view of the above-described problems that it is difficult to simultaneously satisfy differentiated support demands. Therefore, the utility model aims to provide a chair back waist support adjusting mechanism which aims to dynamically fine tune the radian of a waist support and adapt to different support requirements. In order to solve the technical problems, the utility model provides the technical scheme that the chair back waist support adjusting mechanism comprises a back plate, wherein a plurality of arc-shaped steel plates are arranged on the supporting end surface of the back plate at equal intervals, and elastic mesh cloth is arranged between the arc-shaped end surfaces of the arc-shaped steel plates; The two ends of the arc-shaped steel plate are integrally formed and provided with linkage sliding blocks, a limiting slideway for the linkage sliding blocks to pass through is arranged on the back plate and opposite to each linkage sliding block, and a bidirectional driving assembly for driving the linkage sliding blocks to lift is arranged on one end face, away from the elastic mesh, of the back plate; One side of the backboard, which is close to the arc-shaped steel plate, is provided with a one-way driving assembly linked with the two-way driving assembly, and the movable end of the one-way driving assembly is fixedly connected with a stay. As an improved technical scheme, a rubber layer is adhered to the arc-shaped edge of the stay. As an improved technical scheme, the bidirectional driving assembly comprises a polished rod fixed on one side of the back plate away from one end face of the arc-shaped steel plate, and two screw rods which are rotatably arranged on the other side of the back plate away from one end face of the back plate, and simultaneously the screw directions of the two screw rods are opposite, a transmission bar is arranged in the transmission design between the polished rod and the screw rods, one end of the transmission bar is provided with a sliding hole sliding with the polished rod, and the other end of the transmission bar is provided with a threaded hole in threaded connection with the screw rods. As an improved technical scheme, the one-way drive assembly comprises a threaded sleeve fixed at one end of the stay away from the arc-shaped steel plate, a threaded rod is arranged in the threaded sleeve in a threaded manner, and the threaded rod is rotatably arranged on the back plate. As an improved technical scheme, the stay is close to the both sides of a screw sleeve terminal surface and all is fixed with the positioning sleeve, the inside slidable mounting of positioning sleeve has the locating lever, and the one end that the locating lever kept away from the stay is fixed on the backplate. As an improved technical scheme, one end of the threaded rod, which is far away from the threaded sleeve, is sleeved with a turbine, a worm meshed with the turbine is fixed between the opposite ends of the two screw rods, and a knob is sleeved at the top end of the screw rod, which is close to the upper side. After the technical scheme is adopted, the utility model has the beneficial effects that: 1. According to the utility model, when the two transmission bars move towards the middle part at the same time, the distance between the two ends of the arc-shaped steel plate is shortened, the radian of the arc-shaped steel plate is changed, the protruding ends of the arc-shaped steel plate protrude outwards, otherwise, when the two transmission bars move upwards and downwards respectively, the two ends of the arc-shaped steel plate are enlarged, the protruding ends of the arc-