Deployment system for deployable sofa, and deployable sofa

Abstract

The present invention relates to a deployment system for a deployable sofa. The deployment system includes a deployment apparatus, and the deployment apparatus includes a bottom fixing member, a support, a swinging rod, a first multi-link rod mechanism, and a second multi-link rod mechanism, where the bottom fixing member is used to be fixedly mounted to a sofa bottom frame; the support is used to support a sofa seat; the swinging rod is rotatably connected to the support by means of the first multi-link rod mechanism, and the swinging rod is rotatably connected to the bottom fixing member by means of the second multi-link rod mechanism; the second multi-link rod mechanism is constructed to be capable of enabling the swinging rod to move approximately parallel to the bottom fixing member; and the first multi-link rod mechanism is constructed to be capable of transferring translation of the swinging rod to the support, to enable the support to move approximately parallel to the bottom fixing member. The present invention eliminates a jitter phenomenon during deployment of a deployable sofa, and a link rod mechanism is used to improve synchronicity and reduce manufacturing difficulty and maintenance fees.

What is claimed is: 
     
         1 . A deployment system for a deployable sofa, wherein the deployment system comprises a deployment apparatus, and the deployment apparatus comprises a bottom fixing member, a support, a swinging rod, a first multi-link rod mechanism, and a second multi-link rod mechanism, wherein
 the bottom fixing member is used to be fixedly mounted to a sofa bottom frame;   the support is used to support a sofa seat;   the swinging rod is rotatably connected to the support by means of the first multi-link rod mechanism, and the swinging rod is rotatably connected to the bottom fixing member by means of the second multi-link rod mechanism;   the second multi-link rod mechanism is constructed to be capable of enabling the swinging rod to move approximately parallel to the bottom fixing member; and   the first multi-link rod mechanism is constructed to be capable of transferring translation of the swinging rod to the support, to enable the support to move approximately parallel to the bottom fixing member.   
     
     
         2 . The deployment system for a deployable sofa according to  claim 1 , wherein the first multi-link rod mechanism comprises a second pivotal member and at least one lower transmission connecting member, wherein a lower end portion of the lower transmission connecting member and a lower end portion of the second pivotal member are both rotatably connected to the swinging rod, and an upper end portion of the lower transmission connecting member and an upper end portion of the second pivotal member are both rotatably connected to the support, so that the support, the swinging rod, the second pivotal member, and one of the at least one lower transmission connecting member form a four-link rod mechanism. 
     
     
         3 . The deployment system for a deployable sofa according to  claim 2 , wherein the second multi-link rod mechanism comprises a second transmission rod, a second connecting member, a fifth connecting member, a third transmission rod, a fourth transmission rod, a third pivotal member, and a first connecting member;
 a front end portion of the swinging rod is rotatably connected to a lower end portion of the first connecting member, a front end portion of the bottom fixing member is rotatably connected to a lower end portion of the third pivotal member, and an upper end portion of the first connecting member is hingedly connected to a position, located between two end portions of the third pivotal member, on the third pivotal member;   a rear end portion of the swinging rod is rotatably connected to a lower end portion of the third transmission rod, a rear end portion of the bottom fixing member is rotatably connected to a lower end portion of the fourth transmission rod, and an upper end portion of the third transmission rod is hingedly connected to a position, located between two end portions of the fourth transmission rod, on the fourth transmission rod;   a front end portion of the second transmission rod is rotatably connected to an upper end portion of the third pivotal member, a rear end portion of the second transmission rod is rotatably connected to a front end portion of the second connecting member and a front end portion of the fifth connecting member, a rear end portion of the second connecting member is hingedly connected to a position, located between two end portions of the third transmission rod, on the third transmission rod, and a rear end portion of the fifth connecting member is rotatably connected to an upper end portion of the fourth transmission rod.   
     
     
         4 . The deployment system for a deployable sofa according to  claim 3 , wherein a limiting block is disposed at each of positions, located on two sides of the fourth transmission rod, on the bottom fixing member, and the two limiting blocks are used to limit clockwise or counterclockwise rotation of the fourth transmission rod. 
     
     
         5 . The deployment system for a deployable sofa according to  claim 2 , wherein the deployment apparatus further comprises a pedal deployment mechanism used to support a sofa pedal and capable of deploying and retracting the sofa pedal, and the pedal deployment mechanism is disposed in front of the support. 
     
     
         6 . The deployment system for a deployable sofa according to  claim 5 , wherein the pedal deployment mechanism comprises a pedal swinging rod, a front swinging member, a first link rod, a second link rod, and a pedal apparatus;
 a rear end portion of the pedal swinging rod is rotatably connected to the support and the second pivotal member, and a front end portion of the pedal swinging rod is rotatably connected to a rear end portion of the front swinging member;   a rear end portion of the second link rod is rotatably connected to the support, a front end portion of the second link rod is rotatably connected to a rear end portion of the first link rod, and a portion, located between two end portions of the second link rod, of the second link rod is further rotatably connected to a portion, located between two end portions of the front swinging member, of the front swinging member; and   both a front end portion of the front swinging member and a front end portion of the first link rod may be drivably connected to the pedal apparatus, so that the pedal apparatus can deploy and support the sofa pedal.   
     
     
         7 . The deployment system for a deployable sofa according to  claim 6 , wherein a front end portion of the front swinging member is rotatably connected to a rear end portion of a fourth link rod, a front end portion of the first link rod is rotatably connected to a position, located between two end portions of the fourth link rod, on the fourth link rod, a front end portion of the fourth link rod is rotatably connected to a rear end portion of a first plate member, a front end portion of the first plate member is rotatably connected to a rear end portion of the pedal apparatus, a second plate member is fixedly connected to the fourth link rod, an end of a tension spring is connected to the second plate member, and the other end of the tension spring is connected to a position, located between two end portions of the pedal apparatus, on the pedal apparatus. 
     
     
         8 . The deployment system for a deployable sofa according to  claim 6 , wherein the pedal deployment mechanism further comprises a U-shaped member, and the U-shaped member is rotatably connected to the first link rod and the front swinging member separately and is used to support legs of a user. 
     
     
         9 . The deployment system for a deployable sofa according to  claim 5 , wherein the deployment apparatus further comprises a back deployment mechanism used to support a sofa backrest and capable of deploying and retracting the sofa backrest, and the back deployment mechanism is disposed behind the support. 
     
     
         10 . The deployment system for a deployable sofa according to  claim 9 , wherein the back deployment mechanism comprises a third link rod, a back transmission rod, a first pivotal member, a crank, and a fourth connecting member, and the crank is fixedly disposed on the support;
 a lower end portion of the fourth connecting member is rotatably connected to the bottom fixing member, and an upper end portion of the fourth connecting member is rotatably connected to a lower end portion of the first pivotal member;   a position, located between two end portions of the first pivotal member, on the first pivotal member is rotatably connected to the crank; and   an upper end portion of the first pivotal member is rotatably connected to a lower end portion of the back transmission rod, an upper end portion of the back transmission rod is rotatably connected to a rear end portion of the third link rod, and a front end portion of the third link rod is rotatably connected to the crank, so that the sofa backrest can be deployed or retracted by driving the third link rod.   
     
     
         11 . The deployment system for a deployable sofa according to  claim 9 , wherein the deployment system further comprises a power apparatus, and the power apparatus is used to drive the support to move approximately parallel to the bottom fixing member and used to drive deployment and retraction of the pedal deployment mechanism and drive deployment and retraction of of the back deployment mechanism. 
     
     
         12 . The deployment system for a deployable sofa according to  claim 1 , wherein the deployment system comprises two deployment apparatuses, the two deployment apparatuses are respectively disposed on two sides of the sofa seat, a front drive tube and a rear drive tube are separately disposed between the two deployment apparatuses, two end portions of the front drive tube are connected to the support on a corresponding side, and two end portions of the rear drive tube are connected to the bottom fixing member on a corresponding side. 
     
     
         13 . The deployment system for a deployable sofa according to  claim 12 , wherein a power apparatus used to drive the support to move relative to the bottom fixing member is disposed on the rear drive tube. 
     
     
         14 . The deployment system for a deployable sofa according to  claim 13 , wherein the power apparatus can drive the front drive tube, so as to drive the front drive tube to actuate the support to move relative to the bottom fixing member. 
     
     
         15 . A deployable sofa, comprising the deployment system for a deployable sofa according to  claim 1 .