Bag with adjustable firmness and using method thereof

Abstract

A bag with adjustable firmness and a using method thereof, which relate to the field of travel goods. The bag includes a bag body and an inflatable airbag. An airbag accommodating space is arranged around an inner side of the bag body. The inflatable airbags are arranged in the airbag accommodating space and around the inner side of the bag body in a circle with space between each other. Inflation of the airbag increases the firmness of bag panel to achieve structured and three-dimensional shape for the bag body. Deflation of the bag decreases the firmness of bag panel to allow bag body to be softer and easier to store. The expansion or contraction of airbag can adjust the firmness of bag body according to actual usage scenarios, solving the problem in conventional bags where flexibility and rigidity of fabric cannot be adjusted to suit different usage needs.

What is claimed is: 
     
         1 . A bag with adjustable firmness, comprising:
 a bag body having an airbag accommodating space formed inside; the airbag accommodating space is arranged around an inner side of the bag body; and   an inflatable airbag arranged in the airbag accommodating space, and the inflatable airbag is arranged around the inner side of the bag body.   
     
     
         2 . The bag with adjustable firmness according to  claim 1 , wherein the inflatable airbag comprises a plurality of first airbags, the plurality of first airbags are arranged in the airbag accommodating space, and the plurality of first airbags are arranged around the inner side of the bag body in a circle with space between each other;
 the bag with adjustable firmness comprises a plurality of inflation and deflation ports, each of the inflation and deflation ports is provided on the bag body and connected to one first airbag; and   a sealing element is detachably provided on the inflation and deflation port.   
     
     
         3 . The bag with adjustable firmness according to  claim 2 , wherein the sealing element is a sealing cover or a sealing plug. 
     
     
         4 . The bag with adjustable firmness according to  claim 1 , wherein the inflatable airbag comprises a plurality of second airbags;
 the plurality of second airbags are arranged in the airbag accommodating space, and the plurality of second airbags are arranged around the inner side of the bag body in a circle with space between each other;   a first air tube is provided between two adjacent second airbags, and the first air tube is configured to connect the two adjacent second airbags;   the bag with adjustable firmness comprises a first deflation port and a first inflation port, and at least one first deflation port and at least one first inflation port are provided;   the at least one first deflation port is disposed on the bag body and connected to the second airbag; and   the at least one first inflation port is disposed on the bag body and connected to the second airbag.   
     
     
         5 . The bag with adjustable firmness according to  claim 4 , wherein the bag with adjustable firmness comprises a first inflation check valve and a first deflation check valve;
 the first inflation check valve is disposed on the first inflation port, and the first inflation check valve is configured to prevent the air in the second airbag from escaping; and   the first deflation check valve is disposed on the first deflation port, and the first deflation check valve is configured to prevent external air from entering the second airbag.   
     
     
         6 . The bag with adjustable firmness according to  claim 5 , wherein the first deflation check valve is provided with a pressure threshold, when a pressure inside the second airbag is greater than the pressure threshold, the first deflation check valve opens, allowing air in the second airbag to be released to outside, and until the pressure inside the second airbag is less than or equal to the pressure threshold, the first deflation check valve closes. 
     
     
         7 . The bag with adjustable firmness according to  claim 1 , wherein a supporting and accommodating space is formed inside the bag body, and the supporting and accommodating space is arranged to be next to a back of a user; and
 a third airbag is arranged in the supporting and accommodating space, and the third airbag is configured to support human spine.   
     
     
         8 . The bag with adjustable firmness according to  claim 7 , wherein a plurality of third airbags are provided, and the plurality of third airbags are arranged inside the supporting and accommodating space;
 a second air tube is provided between two adjacent third airbags, and the second air tube is configured to connect the two adjacent third airbags;   the bag with adjustable firmness comprises a second deflation port and a second inflation port, and at least one second deflation port and at least one second inflation port are provided;   the at least one second deflation port is disposed on the bag body and connected to the third airbag; and   the at least one second inflation port is disposed on the bag body and connected to the third airbag.   
     
     
         9 . The bag with adjustable firmness according to  claim 7 , wherein the airbag accommodating space can be opened or closed, and the inflatable airbag is detachably arranged in the airbag accommodating space; and
 the supporting and accommodating space can be opened or closed, and the third airbag is detachably arranged in the airbag accommodating space.   
     
     
         10 . A using method for a bag with adjustable firmness, the method is applied to the bag with adjustable firmness according to  claim 1 , the method comprising:
 inflating the inflatable airbag when a firmness of the bag needs to be increased, expanding and hardening the bag body;   deflating the inflatable airbag when the firmness of the bag needs to be reduced, contracting and softening the bag body.