Patent Application
20210127837
This invention is to a webbing seat that is suspended by circular armrest and is with fabric cushion and webbing back.
Recent years have seen development of an elastic seat that features simple construction and unique modelling. It is very popular and particularly fits casual activities. Claimed as an elastic, drawstring seat in prior art Application No. 2012207061144, its main construction covers the armrest hem and seating section. The seating section is divided into two parts: cushion and backrest. The backrest is made up of cross-woven elastic drawstrings and the seat presents a tight plane when unloaded. The seat features novel modelling full of fun and elasticity without the oxford fabric look. Due to its small-diameter elastic drawstring creates an uncomfortable feeling to a human body plus has complex cross-woven workmanship, The manufacturer made an improvement as disclosed in Application No. 2014203515772, proposing an elastic webbing seat in order to reduce the workmanship complexity. Though in this proposal, the seat is flat, it apparently shows relative movement between human hip and cushion and a tight feeling when seated. How to improve this defect has become an object of present invention.
The purpose of this invention is to show a design for a seating section mode up of a cushion and a suspended webbing backrest.
The technical proposal of the invention is achieved in one or more of the following ways:
A webbing seat body includes hem and sitting section and is fixed to an armrest through the hem; a sitting section is composed of a cushion, same fabric as that of the hem, and backrest; The backrest is made up of webbing with one end sewn to the hem and other end to the cushion edge; the cushion front is sewn to the hem and its back is suspended through the webbing and stretched webbing forms backrest.
The webbing is uniformly distributed between back of cushion and hem in a radial shape.
The webbing is uniformly distributed between the back of the cushion and hem in a cross-woven construction.
The cushion and backrest are formed in an angle greater than 90 degrees in any position and the back of cushion is backward inclined between 5-20 degrees.
The back of the cushion is equipped with a molding rod passing through the fabric pocket sewn around cushion and two ends of the pocket are sealed to restrain the molding rod.
The lower end of webbing goes under the pocket or is fixed with the pocket.
The hem can be one of the following shapes: circle, oval, rectangle, triangle, pentagon, hexagon, octagon, trapezoid, gourd shape, or bread shape with rounded corners at the upper portion and square corners at the lower portion.
In this invention, the sitting section is composed of cushion and webbing backrest; it is comfortable for human hip and back without causing a tight feeling and features a chic design with good air permeability at its backrest.
Similar reference characters denote corresponding features consistently throughout the attached drawings. Namely, in the drawings the following reference numbers refer to the following part:
With reference to
In seat body 2, the sitting (“seating”) section includes cushion 22 and backrest 23; the cushion 22 uses the same fabric as that of hem 21 where cushion 22 front is sewn together to the hem 21, forming an arc connection to support human hip and both legs.
The backrest 23 is composed of webbing at 231, one end of which is sewn to hem 21 and the other to the edge of cushion 22; cushion 22 front is sewn to the hem 21 and cushion back is suspended through webbing 231 to form a backrest. Through the suspension, the sitting section has cushion 22 and backrest 23 and is visually closer to a conventional chair than a spring seat. Namely, it is leisure chair with comfort at the first place. Therefore, the sitting section is designed as follows: the angle between cushion 22 and backrest 23 is greater than 90 degrees at any position along the seat and cushion 22 is rearwardly inclined at 5-20 degrees as shown in
For suspended webbing backrest 231, there are two typical proposals:
Number 1, webbing 231 is uniformly distributed between cushion 2 back and hem 21 in a radial form as shown in
Number 2, webbing 231 is uniformly distributed between cushion 2 back and hem 21 in a cross-woven construction. To be more specific, the cross angle should be less than 90 degrees to form a diamond mesh that is more stable in suspension as shown in
For the seat section, oxford cushion 22 and webbing backrest 23 are all flexible materials and inevitably shapeless when unfolded. Hence, molding rod 3 is installed around the back edge of cushion 22 and passes through the fabric pocket 221 along the edge of cushion; fabric pocket 221 is sealed at both ends to restrain molding rod 3, or the edge of cushion 22 is sewn into loop shape and sealed with rivets after molding rod 3 passes; the molding rod can be a metal tube with certain weight and bent into specific form to maintain sitting section in good shape with its own weight; of course, this molding rod can be also plastic one as shown in
Also, the addition of molding rod may increase carrying capacity of cushion 22 and uniformly allocates load to webbing 231.The bottom end of webbing 231 passes around downside of pocket 221, or is sewn together with downside of the pocket. Therefore, the molding rod has dual functions.
The shape of hem 21 is to follow that of the armrest and may be as same as or close to that of the armrest such as circle, oval, rectangle, triangle, pentagon, hexagon, octagon, trapezoid, gourd shape, or bread shape with rounded corners at the upper and square corners at the lower. The inner and outside edges of hem are of the same shape. The outside edge can be as same as armrest 11 and inner edge can be a mix of specific shapes; whatever it is, the outside edge should be equipped with sewn pocket for penetration of armrest 11 and for suspension of sitting section.
