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CN-224229075-U - Folding cross structure and folding device

CN224229075UCN 224229075 UCN224229075 UCN 224229075UCN-224229075-U

Abstract

The utility model discloses a folding cross structure and a folding device, and aims to solve the defects that the existing folding structure is large in size after being folded, large in sliding range in the folding process and influences the installation of other parts. The utility model comprises two sliding support rods and two support rods, wherein the lower parts of the two sliding support rods are hinged together, the upper parts of the two support rods are hinged together, two folding pull rods hinged together are arranged between the two support rods, the two folding pull rods are respectively hinged with the two support rods, the two support rods are rotatably connected with limiting seats, movable slots are arranged on the limiting seats, and the two sliding support rods respectively penetrate through the movable slots on the two limiting seats. The folding cross structure of the utility model greatly reduces the size after folding and the sliding range in the folding process.

Inventors

  • CHEN XIAOBO
  • GAO HAIHONG
  • YAN BO

Assignees

  • 浙江嘉立德运动科技有限公司

Dates

Publication Date
20260512
Application Date
20250619

Claims (10)

  1. 1. The utility model provides a folding cross structure, characterized by, including two slip branch and two bracing pieces, two slip branch lower parts are articulated together, and two bracing piece upper portions are articulated together, set up two articulated folding pull rods together between two bracing pieces, and two folding pull rods are articulated with two bracing pieces respectively, rotate on two bracing pieces and are connected with spacing seat, set up movable slot on the spacing seat, and two slip branch pass the movable slot on two spacing seats respectively.
  2. 2. The folding cross structure of claim 1, wherein the two support bars are hinged by a rotational connector comprising two hinged rotational joints, the two rotational joints being fixedly connected to the two support bars, respectively.
  3. 3. The folding cross structure of claim 1, wherein the movable slot is penetrated to the upper and lower ends of the limiting seat, so that the upper and lower ends of the limiting seat form avoidance notches.
  4. 4. A folding crossover structure as defined in claim 1 wherein the hinge axis of the two sliding struts coincides with the hinge axis of the two pairs of tie rods.
  5. 5. The folding cross structure according to claim 1, wherein a limiting head is arranged on one pair of folding pull rods, and the other folding pull rod is supported on the limiting head to realize limiting after the folding cross structure is fully unfolded.
  6. 6. The folding cross structure according to claim 1, wherein the two sliding struts are hinged by a rotating seat, the two pairs of folding tie rods are both hinged with the rotating seat, the rotating seat comprises two hinged joints, and the two hinged joints are respectively and fixedly connected with the two sliding struts.
  7. 7. A folding cross structure according to any one of claims 1 to 6, wherein the two side walls of the movable slot are provided with mounting holes, and the limit seat is connected with the support rod through a mounting hole.
  8. 8. The folding crossing device is characterized by comprising a table frame, wherein the table frame comprises two folding frame bodies which are arranged front and back, the folding crossing structure of any one of claims 1 to 7 is connected between the two folding frame bodies, two sliding support rods are rotatably connected with the upper parts of the two folding frame bodies, and two support rods are rotatably connected with the lower parts of the two folding frame bodies.
  9. 9. The folding cross device is characterized by comprising a chair frame, wherein the chair frame comprises two opposite supporting frame bodies, the folding cross structure of any one of claims 1 to 7 is connected between the two supporting frame bodies, two sliding supporting rods are rotatably connected with the lower parts of the two supporting frame bodies, and two supporting rods are rotatably connected with the upper parts of the two supporting frame bodies.
  10. 10. The folding crossing device is characterized by comprising a cart frame, wherein the cart frame comprises two oppositely arranged frame bodies, the folding crossing structure of any one of claims 1 to 7 is connected between the two frame bodies, two sliding support rods are rotatably connected with the lower parts of the two frame bodies, and two support rods are rotatably connected with the upper parts of the two frame bodies.

Description

Folding cross structure and folding device Technical Field The present utility model relates to a folding apparatus, and more particularly, to a folding cross structure and a folding apparatus. Background At present, folding products such as folding tables, folding chairs, folding carts, folding beds and the like are folded, stored and unfolded through a folding structure, so that the folding chair is small in storage occupation space, convenient to carry and stable and reliable in unfolding and use. The existing single-cross structure consists of a cross pipe, a sliding block and a plurality of rivets, the cross pipe is contracted and expanded by the sliding block arranged on the desk leg, the sliding block is arranged on the desk leg and convenient to disassemble and transport as disclosed in Chinese patent application number 2023235804722, the sliding block slides on the desk leg in the folding and expanding processes, the sliding range is large, and other parts cannot be arranged on the desk leg to prevent interference caused by sliding of the sliding block. Disclosure of utility model In order to overcome the above-mentioned shortcomings, the present utility model provides a folding cross structure and a folding device, which greatly reduce folding size and sliding range. In order to solve the technical problems, the folding cross structure comprises two sliding support rods and two support rods, wherein the lower parts of the two sliding support rods are hinged together, the upper parts of the two support rods are hinged together, two hinged folding pull rods are arranged between the two support rods, the two folding pull rods are respectively hinged with the two support rods, the two support rods are rotatably connected with limiting seats, movable slots are formed in the limiting seats, and the two sliding support rods respectively penetrate through the movable slots in the two limiting seats. The two sliding support rods and the two support rods are rotatably connected with other components, the connecting positions are used as stress points, and the fixed points are relatively fixed, so that sliding blocks are not required to be arranged on the other components. When the folding cross structure is unfolded and used, the two sliding support rods and the two support rods are unfolded, so that the included angle between the two sliding support rods is increased, the included angle between the two support rods is increased, the two pairs of pull rods are straightened to realize positioning, in the unfolding process, the sliding support rods slide in the movable slots on the limiting seats, the limiting seats can rotate in the sliding process, and the clamping stagnation phenomenon is prevented in the unfolding and folding processes of the sliding support rods. When the folding cross structure is folded, the whole structure is closed towards the middle, the included angle between the two sliding support rods is reduced, the included angle between the two support rods is reduced, and the two pairs of folding pull rods are folded together. The two sliding support rods respectively penetrate through the movable slots on the two limiting seats, the connection positions of the two sliding support rods and the two support rods with other parts are fixed in the folding and unfolding processes of the whole structure, the fixation effect is achieved through self-locking of the folding pull rods, the size after folding and the sliding range in the folding process are greatly reduced, and the structure is applicable to folding tables, folding chairs, folding carts and the like. Preferably, the two support rods are hinged through a rotary connecting piece, the rotary connecting piece comprises two rotary joints hinged together, and the two rotary joints are respectively and fixedly connected with the two support rods. When two bracing pieces interconnect, earlier with two rotation joints cartridge respectively to two bracing piece tip to after through the screw fastening, with two rotation joints articulated through the articulated shaft again, connect convenient and reliable. Preferably, the movable slot penetrates through the upper end and the lower end of the limiting seat, so that the upper end and the lower end of the limiting seat form avoidance notches. In the folding process of the folding cross structure, the included angle between the two sliding support rods is reduced, so that the limiting seat is driven to rotate, the sliding support rods are inserted into the avoidance notch after being folded in place, the sliding support rods can be in a parallel state with the limiting seat, the included angle between the two sliding support rods can be reduced as far as possible, and the size after being folded is reduced. Preferably, the hinge axis of the two sliding struts coincides with the hinge axis of the two pairs of folding-in tie rods. The rotation axes are coincident, so that the unfolding and folding p