Disclosed is an apparatus for manufacturing an internal tension member of an inflatable product, the apparatus comprising: a support frame; a base plate arranged to pass through the inside of the support frame; a base strip conveying device comprising two inner base strip reels, two outer base strip reels and a traction wheel which are used for continuously supplying base strips, the traction wheel pulling four base strips to continuously move; a wire winding device comprising a rotation device arranged around the base plate and wire winding guide shafts symmetrically arranged on two sides of the base plate, the rotation device winding a wire on two inner base strips in a rotating manner; and a welding device positioned between the wire winding device and the traction wheel, the welding device respectively welding the two inner base strips to the corresponding two outer base strips. Further disclosed are a method for manufacturing an internal tension member of an inflatable product, an internal tension member of an inflatable product, and an inflatable product.

An inflatable bed is provided including an upper sheet, a lower sheet, a lateral confining sheet and a first internal sheet. The lateral confining sheet connects the upper sheet and the lower sheet to define an inflatable chamber. The upper sheet has a planar portion and an oblique portion. The planar portion of the upper sheet is connected to the lower sheet by means of the first internal sheet. The lateral confining sheet comprises a circumferential portion and an extension portion extending upward along an end of the circumferential portion. The extension portion and the oblique portion of the upper sheet are connected to form a backrest of the inflatable bed, and the backrest is internally provided with a second internal sheet which is used for connecting the oblique portion of the upper sheet to the extension portion of the lateral confining sheet. The inflatable bed may further include a third internal sheet, a fourth internal sheet and a fifth internal sheet which are regionally arranged in an inner part to form an integrated backrest.

Provided is an inflatable bed, including a main air chamber, a first pull strap group, and a second pull strap group annular air chamber, where a first annular air chamber and a second annular air chamber which are in communication with each other are provided in the main air chamber, the first annular air chamber and the second annular air chamber are respectively provided at two opposite sides of the main air chamber, the first pull strap group is connected to both an inner wall of the main air chamber and an outer wall of the first annular air chamber, and the second pull strap group is connected to both the inner wall of the main air chamber and an outer wall of the second annular air chamber. With the structure design of the inflatable bed, a pulling structure is formed between adjacent air chambers.

An inflatable bed is provided, comprising: a first piece, a middle piece having a middle master piece and an oblique ring piece having an inner edge connected to the middle master piece, and a second piece; a first lateral piece connected to the first piece and to an outer edge of the oblique ring piece; and a second lateral piece connected to the middle piece and to the second piece. A first air chamber is defined by the first piece, the middle piece, and the first lateral piece. A second air chamber is defined by the middle piece, the second piece, and the second lateral piece.

The present disclosure provides a pick-up truck mattress, including a main air chamber and an annular air chamber in communication with each other, wherein two opposite sides of the main air chamber are each provided with two convex portions, and the two convex portions on the same side define therebetween an avoidance groove configured to avoid a wheel; the annular air chamber is provided around the main air chamber, and the annular air chamber is located at one sides of the convex portions in a thickness direction of the main air chamber and shields the avoidance grooves.

There is provided an air cushion in which air chambers rise when a user is seated.

An air cushion including an outer welded portion along an outer peripheral portion of a flat bag-shaped object includes: a first air chamber as a seating portion; a second air chamber as a side support portion; and a third air chamber as a side support portion, wherein the air chambers communicate with each other through passage portions and an inner welded portion is provided that has a U character.

An inflatable product is provided including a top sheet, a bottom sheet, a lateral confining sheet, and an internal connecting sheet. A peripheral edge of the top sheet is connected to an upper edge of the lateral confining sheet, and a peripheral edge of the bottom sheet is connected to a lower edge of the lateral confining sheet, forming an inflatable chamber. An upper edge of the internal connecting sheet is connected to the top sheet, a lower edge of the internal connecting sheet is connected to the bottom sheet, and a connecting part of the internal connecting sheet, located between the upper edge and the lower edge of the internal connecting sheet, is connected to the lateral confining sheet along at least one welding seam. The at least one welding seam may form at least one embossment on an outside of the inflatable product.

An inflatable product is provided, comprising: an inflatable chamber defined by a chamber wall; a tensioning member disposed in the inflatable chamber; and a connecting member disposed in the inflatable chamber. The connecting member includes a covering layer and a fiber layer disposed between the chamber wall and the covering layer. The tensioning member is sewn to the connecting member, and the connecting member is connected to the chamber wall.

A transfer mattress includes a top panel, a bottom panel, an outer stringer and an inner stringer. The top panel has a perimeter including a proximal edge and a distal edge, wherein a central longitudinal axis extends from the proximal edge to the distal edge. The bottom panel has a plurality of perforations and a perimeter including a proximal edge and a distal edge coupled to the perimeter of the top panel. The outer stringer and inner stringer each have a superior edge coupled to the top panel and an inferior edge coupled to the bottom panel and a longitudinal portion that is substantially parallel to the central longitudinal axis. The inner stringer is positioned between the central longitudinal axis and the outer stringer.

The invention relates to a volume element comprising at least one first chamber which can be filled with a gas and can thereby be inflated and which is at least partly delimited by a flexible first wall, at least one second chamber which can be filled with the gas and can thereby be inflated and which is at least partly delimited by the first wall that is arranged between the first chamber and the second chamber and partly by a flexible second wall, and at least one third chamber which can be filled with the gas and can thereby be inflated and which is at least partly delimited by a flexible third wall that is arranged between the second chamber and the third chamber and partly delimits the second chamber.