CN209750403U

CN209750403U - Main body structure of sitting and lying chair and sitting and lying sofa with mobile locking device

Info

Publication number: CN209750403U
Application number: CN201920360712.2U
Authority: CN
Inventors: 韩宝兴; 韩康
Original assignee: Jiangshan Qi Cheng Electromechanical Science And Technology Co Ltd
Current assignee: Jiangshan Qi Cheng Electromechanical Science And Technology Co Ltd
Priority date: 2019-03-15
Filing date: 2019-03-15
Publication date: 2019-12-10
Anticipated expiration: 2029-03-15

Abstract

The utility model discloses a main part structure of sitting deck chair and sitting sofa of lying with removing locking device comprises back of the body subassembly, seat subassembly, frame part and removal locking device, removes locking device and vice support piece subassembly and sets up on the parallelogram mechanism of frame part, and the seat side of seat subassembly links firmly or connects on the upper ledge cross member of frame part with removing vice form. When the person sits on the chair to lie, the control piece is pressed down to release the locking force, the back exerts force backwards to enable the backrest to rotate backwards to generate linkage, the seat is lowered, the auxiliary support piece and the weight center of the person move backwards synchronously, and the stable switching from sitting to lying is realized; when the chair returns to the sitting position, the control piece is pressed down, and the automatic reset is realized by the constant force of the movable locking device. In addition, a safe and stepless adjustment of the seat and the lying position can be realized. The utility model discloses with parallelogram mechanism motion characteristic and removal locking device characteristic perfect adaptation, realize that the product is simple reasonable, low cost, high-grade, popular consumption. Creates better conditions for reducing the sedentary harm and the afternoon nap of each group.

Description

Main body structure of sitting and lying chair and sitting and lying sofa with mobile locking device

Technical Field

The utility model belongs to the technical field of furniture technique and specifically relates to a main structure of sitting deck chair and sitting sofa of lying with remove locking device.

background

the social consensus is achieved for two common daily problems of 'various damages caused by sedentary people' and 'various benefits caused by afternoon nap'. The two technical schemes of 'telescopic sitting and lying dual-purpose office and learning chair' with the patent number ZL201721517914.0 and 'telescopic sitting and lying dual-purpose chair' with the patent number ZL201820336205.0 try to realize popular consumption of the sitting and lying dual-purpose chair, change the limitation of the existing sitting and lying chair in use, create conditions for reducing 'various hazards brought by long-time sitting', and create conditions for afternoon nap of office workers, students and other groups. The two technical schemes both use the parallelogram mechanism as a main body mechanism and fully utilize the motion characteristics thereof to realize dual purposes of sitting and lying. In order to realize the switching of the sitting and lying of the chair, a proper locking device is necessary, so that the switching and locking of the sitting and lying are more convenient, more reliable, more stable, safer and higher-grade, and the automatic switching is realized to a certain extent. These requirements and functions make the locking mechanism the second key mechanism of a reclining chair. The locking device of the 'telescopic sitting and lying dual-purpose office and study chair' is characterized in that a person stands beside a chair to operate and locks the chair by manpower in the switching process of sitting and lying of the chair, and the structure is complex and the operation is original. Such locking devices do not fully meet the above requirements. The locking device of the telescopic chair for sitting and lying has the advantages that in the switching process of sitting and lying of the chair, a person also stands beside the chair to operate, the locking device can automatically lock, the structure is complex, and the manufacturing precision and the assembly requirement are high. This locking device also does not fully meet the above requirements. In addition, the two locking devices are as follows: parts of the method are basically self-made parts, so that the method is high in cost and time-consuming; secondly, the switching operation of sitting and lying of a person on the chair cannot be realized, and the stepless adjustment of the lying position and the reliable adjustment of the height of the chair seat within a certain interval cannot be realized; and thirdly, the sofa can not be applied to the sofa.

A main structure of a reclining chair and a lying sofa with a mobile locking device is an improvement and a lifting of the locking devices of the two technical schemes; is the promotion of products and the expansion of varieties. It will "dual-purpose official working of lying is sat to the telescopic, study chair" and "dual-purpose chair of lying is sat to the telescopic" motion characteristic of main part mechanism and remove locking device characteristic perfect adaptation for dual-purpose chair of telescopic sitting and lying and locking device have had the improvement of matter and the expansion of volume: firstly, the switching and locking of sitting and lying are more convenient, more reliable, more stable, safer and higher-grade, and the automatic switching to a certain degree is realized; realizing the switching operation of sitting and lying when people sit and lie, realizing the stable adjustment of the seat height and the stable stepless adjustment of the lying position in a certain interval; meanwhile, the product structure is simpler and more reasonable, and the assembly is simpler; the product is expanded, namely the product in two forms of telescopic type and non-telescopic type is realized; the application of the sofa product is expanded, and the product serialization development is facilitated. Thereby: firstly, better conditions are created for reducing various damages caused by sedentary sitting, and better conditions are created for afternoon nap of office workers, students and other groups; secondly, the deck chair is promoted to better realize the popular consumption, and the use limitation of the existing deck chair is changed.

SUMMERY OF THE UTILITY MODEL

The main purpose of the present invention is to provide a main structure of a reclining chair and a reclining sofa with a movable locking device. The technical scheme is that the movement characteristics and the movement locking device characteristics of the main body mechanism of the 'telescopic sitting and lying dual-purpose office and learning chair' with the patent number ZL201721517914.0 and the 'telescopic sitting and lying dual-purpose chair' with the patent number ZL201820336205.0 are perfectly combined, so that the telescopic sitting and lying dual-purpose chair and the locking device have the advantages of quality improvement and quantity expansion: firstly, the seat and the lying are switched more conveniently, more reliably, more stably, more safely and more up to grade, and automatic switching to a certain degree is realized; the switching operation of sitting and lying of a person in the sitting and lying state is realized, the height of the seat and the lying position can be stably adjusted in a stepless way, and the condition that the original telescopic dual-purpose chair for sitting and lying only has one sitting position and one lying position is changed; the product structure is simpler and more reasonable, the assembly is simpler, and the product is suitable for wider places; the product is expanded, namely the serialized product with two forms of telescopic type and non-telescopic type; the application of the sofa product is expanded. Therefore, the manufacturing cost is reduced while the product variety and the grade are increased. Creates better conditions for reducing various damages caused by sedentary sitting and creating better conditions for afternoon nap of office workers, students and other groups; promote the deck chair to realize the popular consumption better, change the limitation on the use of the existing deck chair.

In order to achieve the main object, the present invention is achieved by the following technical solutions. The movable locking device mainly comprises a back assembly, a seat assembly, a frame component, a movable locking device and the like. The back assembly mainly comprises two back side pieces, a back transverse baffle piece and a back internal piece, wherein the two back side pieces are a left back side piece and a right back side piece respectively, the back transverse baffle piece is fixedly connected to the proper positions of the two back side pieces to form a back frame, and the back internal piece is fixedly connected to the back frame. The seat component mainly comprises two seat side components and a seat component, wherein the two seat side components comprise a left seat side component and a right seat side component, the left seat side component is fixedly connected to the left side of the seat component, the right seat side component is fixedly connected to the right side of the seat component, the frame component mainly comprises a support component, a four-piece frame cross component, a shaft component and a limiting component, the support component of the frame component is mainly divided into two groups of main support components and an auxiliary support component, the two groups of main support components are a front main support component and a rear main support component, the front main support component comprises two front main support pieces and a front cross-bar component, the two front main support pieces are a left front main support piece and a right front main support piece, the front cross-bar component is fixedly connected to proper positions of the left front main support piece and the right front main support piece, and the rear main support component comprises two rear main support pieces and a rear cross-bar component, the back main tributary strutting piece of two for left back main tributary strutting piece and right back main tributary strutting piece, back crosspiece piece link firmly the suitable position department of left back main tributary strutting piece and right back main tributary strutting piece, four frame crosspieces be two upper bracket crosspieces and two lower bracket crosspieces, two upper bracket crosspieces be left upper bracket crosspiece and right upper bracket crosspiece, two lower bracket crosspieces be left lower bracket crosspiece and right lower bracket crosspiece. The front end of the left upper frame cross member is movably connected with the upper end of the left front main supporting piece, the rear end of the left upper frame cross member is movably connected with the proper position of the left rear main supporting piece through a shaft, the front end of the right upper frame cross member is movably connected with the upper end of the right front main supporting piece, the rear end of the right upper frame cross member is movably connected with the proper position of the right rear main supporting piece through a shaft, the front end of the left lower frame cross member is movably connected with the proper position of the left front main supporting piece, the rear end of the left lower frame cross member is movably connected with the proper position of the left rear main supporting piece, the front end of the right lower frame cross member is movably connected with the proper position of the right front main supporting piece, the rear end of the right lower frame cross member is movably connected with the proper position of the right rear main supporting piece, and the upper frame cross member, the left rear main supporting piece, the right rear main supporting piece and the left lower frame cross member are movably connected with the right rear main supporting piece through the same side, The four-bar mechanism formed by the front main supporting piece, the rear main supporting piece and the lower frame cross piece is a parallelogram mechanism, the parallelogram mechanism positioned on the left side of the frame part is a left parallelogram mechanism, and the parallelogram mechanism positioned on the right side of the frame part is a right parallelogram mechanism. The limiting piece is fixedly connected to the proper position of the parallelogram mechanism. The secondary support member assembly is connected with the parallelogram mechanism. The two sides of the seat component are respectively connected with the upper frame cross component at the same side. The back component is connected with the parallelogram mechanism. The movable locking device is arranged on the parallelogram mechanism.

The connection of said back assembly and said parallelogram mechanism is achieved by a form: the two back side pieces of the back component are fixedly connected with the corresponding back main supporting piece of the parallelogram mechanism.

The connection between the back assembly and the parallelogram mechanism is realized by two forms at the same time: two back side pieces of the back component are fixedly connected with corresponding back main supporting pieces of the parallelogram mechanism; the back component is connected with the parallelogram mechanism through a handrail component I, the handrail component I mainly comprises an upper handrail piece I and a lower handrail piece I, a back side piece of the back component is movably connected with one end of the upper handrail piece I of the handrail component I, the other end of the upper handrail piece I is movably connected with one end of the lower handrail piece I, and the other end of the lower handrail piece I is movably connected with an upper frame cross piece of the parallelogram mechanism.

The two sides of the seat component are respectively connected with the upper frame cross member at the same side, so that the connection is realized: the seat assembly comprises two seat side pieces, wherein guide pieces are respectively arranged on the two seat side pieces, the guide pieces are arranged on the left seat side piece and are left guide pieces, the part, close to the middle of the seat piece, of the left guide piece extends out of the inner side face of the left seat side piece, the guide pieces are arranged on the right seat side piece and are right guide pieces, the part, close to the middle of the seat piece, of the right guide piece extends out of the inner side face of the right seat side piece, the left guide piece and the left upper frame transverse piece form a left guide moving pair, the right guide piece and the right upper frame transverse piece form a right guide moving pair, and the seat side piece, the seat piece, the left guide piece and the right guide piece form a surrounding space.

the two sides of the seat component are respectively connected with the upper frame cross member at the same side, so that the connection is realized: the left seat side component of the seat component is fixedly connected with the left upper frame transverse component, and the right seat side component of the seat component is fixedly connected with the right upper frame transverse component.

The connection between the secondary support member assembly and the parallelogram mechanism is realized by: the auxiliary support component is an auxiliary support component I, the auxiliary support component I mainly comprises an auxiliary support component I and a pressing and pulling component, a proper position of the auxiliary support component I is rotatably connected with a proper position of a rear main support component of the parallelogram mechanism, the pressing and pulling component is fixedly connected to a proper position of a frame cross member of the parallelogram mechanism on the same side, a part of the auxiliary support component I positioned at the lower end of the rotary connection position of the auxiliary support component I and the rear main support component extends out of the rear main support component, a part of the auxiliary support component I positioned at the other end of the rotary connection position of the auxiliary support component I and the rear main support component is provided with a long groove, and the long groove of the auxiliary support component I is movably connected with the pressing and pulling component on the same side.

The connection between the secondary support member assembly and the parallelogram mechanism is realized by: the auxiliary support component is an auxiliary support component II which mainly comprises an auxiliary support II and a telescopic piece, the auxiliary support II is connected with the rear main support of the parallelogram mechanism through a shaft piece, the upper end of the auxiliary support II is fixedly connected with the rear end of the telescopic piece, the telescopic piece and the surrounding space of the seat component form a moving pair, and the telescopic piece and the frame cross piece of the parallelogram mechanism move in parallel.

The arrangement of the mobile locking device on the parallelogram mechanism is realized by the following steps: the movable locking device is a controllable gas spring, one end of the controllable gas spring is fixedly connected to any one of the parallelogram mechanisms, the other end of the controllable gas spring is fixedly connected to the other parallelogram mechanism on the same side, and a control piece of the controllable gas spring is fixedly connected to a proper position of a product.

The arrangement of the mobile locking device on the parallelogram mechanism is realized by the following steps: the movable locking device is composed of a controllable gas spring and a translational locking assembly, one end of the controllable gas spring is fixedly connected to any one of the parallelogram mechanisms, the other end of the controllable gas spring is fixedly connected to the other parallelogram mechanism at the same side, and a control piece of the controllable gas spring is fixedly connected to a proper position of a chair or a sofa. The translational locking component mainly comprises a vertical part, a pushing-resisting part and a handrail component II, wherein the handrail component II comprises an upper handrail component II and a lower handrail component II, the vertical part of the translational locking component is fixedly connected to a lower frame cross member, the pushing-resisting part of the translational locking component is fixedly connected to a seat side member of the seat component, the vertical part and the pushing-resisting part at the same side form a translational kinematic pair, the upper end part of the vertical part is movably connected with one end of the lower handrail component II at the same side, the other end of the lower handrail component II is movably connected with one end of the upper handrail component II, and the other end of the upper handrail component II is movably connected with a back side member at the same side of the back component.

The lower end of the supporting component is a pulley.

Through the structure, the following three typical products can be formed by the technical scheme of the main structure of the reclining chair and the lying sofa with the mobile locking device. The following three typical products are described with reference to having controllable gas springs.

The device mainly comprises a seat assembly, an upper frame cross member, a controllable gas spring, a translational locking assembly, an auxiliary support member assembly, a parallelogram mechanism, a limit member and the like, wherein the seat assembly is connected with the upper frame cross member in a left-right guide moving pair mode, the auxiliary support member assembly is provided with an auxiliary support member I and a lower frame cross member, the auxiliary support member assembly is provided with an auxiliary support member II and a telescopic member, and the parallelogram mechanism is fixedly connected with the limit.

The controllable gas spring and the auxiliary support member assembly are fixedly connected, the auxiliary support member I is connected with the upper frame cross member, the handrail assembly I is connected between the seat assembly and the parallelogram mechanism, and the limiting member is fixedly connected on the parallelogram mechanism;

The controllable gas spring is fixedly connected with the seat component and the upper frame cross member, the auxiliary support component is a product which is connected with the upper frame cross member, does not have a handrail component, and is fixedly connected with a limit component and the like on the parallelogram mechanism;

The specific operation and action of these three products are as follows.

The main operations and linkages of the first typical product.

1. Switching of the chair or sofa from sitting to lying. When the chair or the sofa is in a sitting state, the controllable gas spring locks the parallelogram mechanism, the seat component is blocked and pushed on the upper frame cross component through the vertical component and the blocking and pushing component of the translational locking component, and the auxiliary support component I of the auxiliary support component extends out of the rear main support component to play a role in stabilizing the sitting state. When the user wants to switch to lie, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. The people leans on the back subassembly and exerts oneself backward, has overcome the constant force back of controllable air spring, when the back subassembly inclines backward: the auxiliary supporting piece I is pressed downwards by a pressing and pulling piece fixed on the lower frame cross piece to move backwards along the ground almost synchronously with the back component and the weight center of the person on the back component, so that the stable switching from sitting to lying of the chair or the sofa is realized; secondly, the auxiliary support piece II and the telescopic piece are pulled backwards by the rear main support piece until the auxiliary support piece II lands on the ground and the parallelogram mechanism is limited by the limiting piece; and thirdly, the seat component moves forwards under the combined action of the vertical component fixed on the cross component of the lower frame and the pushing component fixed on the seat component. The stretching of the chair or the sofa is realized by the backward pulling of the telescopic part and the forward moving of the seat component; the upper handrail II movably connected with the back side part is pulled backwards, and the lower handrail II movably connected with the vertical part is pulled forwards, so that the handrail component II is suitable for lying state. After the switching from sitting to lying is completed, the control piece of the controllable gas spring is released, so that the chair or the sofa is in a lying position in a locking state.

2. Switching of the chair or sofa from lying down to sitting. When the user wants to switch to the sitting position, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. Under the push of controllable air spring constant force, when the back subassembly resumes the primary importance forward: the auxiliary supporting piece I moves forwards synchronously with the back component under the upward pulling of the pressing and pulling piece and is retracted to the original position; the rear main supporting piece pushes the auxiliary supporting piece II and the telescopic piece forwards until the state of the auxiliary supporting piece II and the telescopic piece are restored to the sitting position; thirdly, the seat component moves backwards under the combined action of the vertical component and the pushing resistance component; and fourthly, the upper handrail II is pushed forwards by the back side piece, and the lower handrail II is pulled backwards by the vertical piece, so that the handrail component II is restored to the original position. The telescopic piece is pushed forwards and the seat component is moved backwards, so that the chair or the sofa can automatically contract and switch from lying to sitting. After the switching is completed, the control piece of the controllable gas spring is loosened, the locking force of the controllable gas spring is recovered, and the chair or the sofa is locked in a sitting state.

3. stepless switching of sitting and lying of the chair or the sofa. Because: firstly, the controllable gas spring can be locked on any position in a certain interval by a control part at any time; and the auxiliary supporting piece I always moves forwards or backwards synchronously with the back component in the switching process. Therefore, the chair or the sofa can be stably locked at any position in the interval by the controllable gas spring. Namely, the seat height and lying position of the sitting chair or the sitting sofa with the controllable gas spring can stably realize stepless adjustment, and the condition that the prior telescopic sitting and lying dual-purpose chair only has one sitting position and one lying position is changed.

The main operation and linkage of the second typical product.

1. Switching of the chair or sofa from sitting to lying. When the chair or the sofa is in a sitting state, the controllable gas spring locks the parallelogram mechanism and simultaneously locks the seat assembly fixedly connected to the upper frame cross member. The auxiliary supporting piece I of the auxiliary supporting piece component extends out of the rear main supporting piece to play a role in stabilizing during sitting. When the user wants to switch to lie position, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. The back component is inclined backwards, the auxiliary support piece I is pressed downwards by the pressing and pulling piece fixed on the cross piece of the upper frame to synchronously move backwards along the ground, the back component and the weight center of the person when the back component leans backwards, until the position limiting part on the parallelogram mechanism is in a limiting state, the upper handrail I movably connected with the back component is pulled backwards, so that the handrail component I is suitable for the lying state, and the stable switching of the chair or the sofa from sitting to lying is realized. And releasing the control piece of the controllable gas spring to enable the chair or the sofa to be in a locking state of a lying position. At this time, the chair or sofa is supported by the sub-supporter I and the front main supporter.

2. Switching of the chair or sofa from lying down to sitting. When the user wants to switch to the sitting position, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. Under the constant-force pushing of the controllable gas spring, the back component is restored to the original position forwards, the auxiliary supporting piece I is pulled downwards upwards by the pressing and pulling piece and moves forwards synchronously with the back component to be restored to the original position, and the seat component is restored to the state of the seat. The upper armrest I is pushed forwards by the back side piece, so that the armrest component I is restored to the original position, and the automatic and smooth switching from lying to sitting of the chair or the sofa is realized. After the switching is completed, the control piece of the controllable gas spring is loosened, the locking force of the controllable gas spring is recovered, and the chair or the sofa is locked in a sitting state.

3. Stepless switching of sitting and lying of the chair or the sofa. Because: firstly, the controllable gas spring can be locked on any position in a certain interval by a control part at any time; and the auxiliary supporting piece I always moves forwards or backwards synchronously with the back component in the switching process. Therefore, the chair or the sofa can be stably locked at any position in the interval by the controllable gas spring. The chair or the sofa is supported by the auxiliary supporting piece I and the front main supporting piece at any position in the interval. Namely, the seat height and lying position of the sitting chair or the sitting sofa with the controllable gas spring can stably realize stepless adjustment, and the condition that the prior telescopic sitting and lying dual-purpose chair only has one sitting position and one lying position is changed.

the main operation and linkage of the third typical product.

This typical product differs from the second typical product in that there is no handrail assembly.

1. Switching of the chair or sofa from sitting to lying. When the chair or the sofa is in a sitting state, the controllable gas spring locks the parallelogram mechanism and simultaneously locks the seat assembly fixedly connected to the upper frame cross member. The auxiliary supporting piece I of the auxiliary supporting piece component extends out of the rear main supporting piece to play a role in stabilizing during sitting. When the user wants to switch to lie position, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. After a person leans against the back component to exert force backwards, and the constant force of the controllable gas spring is overcome, the auxiliary support piece I is pressed downwards by the pressing and pulling piece fixed on the cross piece of the upper frame while the back component tilts backwards, so that the auxiliary support piece I synchronously moves backwards along the ground, the chair back component and the weight center of the person until the limiting piece on the parallelogram mechanism is in a limiting state, and the stable switching from sitting to lying of the chair or the sofa is realized. And releasing the control piece of the controllable gas spring to enable the chair or the sofa to be in a locking state of a lying position. At this time, the chair or sofa is supported by the sub-supporter I and the front main supporter.

2. Switching of the chair or sofa from lying down to sitting. When the user wants to switch to the sitting position, the control part of the controllable gas spring is pressed, and the controllable gas spring loses the locking force but still has a constant force. Under the constant-force pushing of the controllable gas spring, the back component is restored to the original position forwards, the auxiliary supporting piece I is pulled downwards upwards by the pressing and pulling piece and moves forwards synchronously with the back component to be restored to the original position, and the seat component is restored to the state of the seat. The automatic and smooth switching from lying to sitting of the chair or sofa is realized. After the switching is completed, the control piece of the controllable gas spring is loosened, the locking force of the controllable gas spring is recovered, and the chair or the sofa is locked in a sitting state.

To sum up, the utility model discloses with the motion characteristic of the major structure of "the dual-purpose official working of lying is sat to the telescopic of patent number ZL201721517914.0, study chair" and the patent number ZL201820336205.0 "a telescopic dual-purpose chair of sitting and lying" and remove locking device's characteristic perfect adaptation, improve and promoted the matter and the volume of the locking device and the whole product of "the dual-purpose official working of sitting and lying, study chair": firstly, the seat and the lying are switched more conveniently, more reliably, more stably, more safely and more up to grade, and automatic switching to a certain degree is realized; the switching operation of sitting and lying of the person in the sitting and lying state can be realized; the height and the lying position of the seat can be stably adjusted in a stepless way in a certain interval, and the condition that the original telescopic chair for sitting and lying only has one sitting position and one lying position is changed; the product structure is simpler and more reasonable, the assembly is simpler, and the product is suitable for wider places; the product, namely the serialized product with two forms of telescopic type and non-telescopic type is expanded; the application of the sofa product is expanded. Therefore, the manufacturing cost is reduced while the product variety and the grade are increased. Creates better conditions for reducing various damages caused by sedentary sitting and creating better conditions for afternoon nap of office workers, students and other groups; promote the dual-purpose chair of sitting and lying to realize the popular consumption better, change the limitation on using of the deck chair of existing sitting.

Drawings

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a left side schematic view of the main structure of a lounge chair and lounge sofa with a mobile locking device;

FIG. 2 is a schematic view of FIG. 1 taken along line A;

FIG. 3 is a left side schematic view of another alternative recliner and lounge body construction with a mobile locking device;

Fig. 4 is a schematic sectional view B-B of fig. 3.

Detailed Description

The following detailed description of the first and second embodiments of the present invention will be made with reference to the accompanying drawings.

See fig. 1 and 2. The first embodiment mainly comprises four parts, namely a back assembly 1, a seat assembly 2, a frame assembly 3 and a mobile locking device 4. The back component 1 mainly comprises two back side pieces 1-1, a back cross bar piece 1-2 and a back internal piece 1-3 (shown by dotted lines in figure 1), wherein the two back side pieces 1-1 are a left back side piece 1-1-1 and a right back side piece 1-1-2 respectively, the back cross bar piece 1-2 is fixedly connected with the two back side pieces 1-1 to form a back frame 1-J, and the back internal piece 1-3 is fixedly connected with the back frame 1-J. The seat component 2 consists of two seat side components 2-1 and a seat component 2-2, wherein the two seat side components 2-1 are a left seat side component 2-1-1 (shown by a dotted line in figure 2) and a right seat side component 2-1-2 (shown by a dotted line in figure 2), the left seat side component 2-1-1 is fixedly connected to the left side of the seat component 2-2, and the right seat side component 2-1-2 is fixedly connected to the right side of the seat component 2-2. The frame component 3 mainly comprises a support component 3-1 (not labeled in the figure), a four-piece frame cross component 3-2, a shaft component 3-3 (shown by a dotted line in figure 2) and a limit component 3-4, the support component 3-1 (not labeled in the figure) of the frame component 3 is two sets of main support components 3-1-1 (not labeled in the figure) and auxiliary support components 3-1-2 (not labeled in the figure), the two sets of main support components 3-1-1 are a front main support component 3-1-1-1 and a rear main support component 3-1-1-2, the front main support component 3-1-1-1-1 is composed of two front main support components 3-1-1-1-1 and a front cross-bar component 3-1-1-1-2 (shown by a dotted line in figure 2), the two front main supporting pieces 3-1-1-1-1 are a left front main supporting piece 3-1-1-1-1-1 and a right front main supporting piece 3-1-1-1-2 (shown by dotted lines in figure 2), the front transverse piece 3-1-1-2 is fixedly connected with the left front main supporting piece 3-1-1-1-1-1 and the right front main supporting piece 3-1-1-1-2, the rear main supporting piece assembly 3-1-1-2 is composed of two rear main supporting pieces 3-1-1-2-1 (not marked in figure) and a rear transverse piece 3-1-1-2-2, and the two rear main supporting pieces 3-1-1-2-1 are the left rear main supporting piece 3-1-1-2-1-1 and a right rear main support piece 3-1-1-2-1-2, a rear cross member 3-1-1-2-2 is fixedly connected to the left rear main support piece 3-1-1-2-1-1 and the right rear main support piece 3-1-1-2-1-2, four upper cross members 3-2 are two upper cross members 3-2-1 and two lower cross members 3-2-2, two upper cross members 3-2-1 are a left upper cross member 3-2-1-1 (shown by a dotted line in figure 2) and a right upper cross member 3-2-1-2 (shown by a dotted line in figure 2), two lower cross members 3-2-2 are a left lower cross member 3-2-1 and a right lower cross member 3-2-2-2, the front end of the left upper frame cross member 3-2-1-1 is movably connected with the upper end of the left front main supporting piece 3-1-1-1-1, the rear end of the left upper frame cross member 3-2-1-1 is movably connected with the upper end of the left rear main supporting piece 3-1-1-2-1-1 through a shaft member 3-3 (shown by a dotted line in figure 2), the front end of the right upper frame cross member 3-2-1-2 is movably connected with the upper end of the right front main supporting piece 3-1-1-1-2, the rear end of the right upper frame cross member 3-2-1-2 is movably connected with the upper end of the right rear main supporting piece 3-1-1-2-1-2, the front end of the left lower frame cross member 3-2-2-1 is movably connected with the left front main supporting piece 3-1-1 1-1-1-1, the rear end of the left lower frame cross member 3-2-2-1 is movably connected to the left rear main support member 3-1-1-2-1-1, the front end of the right lower frame cross member 3-2-2-2 is movably connected to the right front main support member 3-1-1-1-2, the rear end of the right lower frame cross member 3-2-2-2 is movably connected to the right rear main support member 3-1-1-2-1-2, a four-bar mechanism consisting of the upper frame cross member 3-2-1, the front main support member 3-1-1-1, the rear main support member 3-1-1-2-1 and the lower frame cross member 3-2-2 on the same side is a parallelogram mechanism 3-P, the parallelogram mechanism 3-P on the left side is a left parallelogram mechanism 3-P-Z, and the parallelogram mechanism 3-P on the right side is a right parallelogram mechanism 3-P-Y. A limiting piece 3-4 is fixedly connected to a front main supporting piece component 3-1-1-1 of the parallelogram mechanism 3-P. The left back side piece 1-1-1 is fixedly connected with the left back main supporting piece 3-1-1-2-1-1, and the right back side piece 1-1-2 is fixedly connected with the right back main supporting piece 3-1-1-2-1-2. The auxiliary supporting piece component 3-1-2 is an auxiliary supporting piece component I3-1-2-1, the auxiliary supporting piece component I3-1-2-1 is composed of a U-shaped auxiliary supporting piece I3-1-2-1-1 and two compression and pull pieces 3-1-2-1-2 (shown by dotted lines in figure 2), two vertical edge parts of the U-shaped auxiliary supporting piece I3-1-2-1-1-1 are respectively and rotatably connected with the left rear main supporting piece 3-1-1-2-1-1-1 and the right rear main supporting piece 3-1-1-2-2, the two compression and pull pieces 3-1-2-1-2 (shown by dotted lines in figure 2) are respectively and fixedly connected with the left lower frame transverse piece 3-2-2-1 and the right lower frame transverse piece 3-2-2, the long grooves 3-C (shown by dotted lines in figure 1) arranged on the two vertical edge parts of the U-shaped auxiliary supporting piece I3-1-2-1-1 are respectively connected with the two compression-pulling pieces 3-1-2-2 in a sliding way. The two seat side members 2-1 of the seat assembly 2 are fixedly connected with a guide member 2-3, the left seat side member 2-1-1 (shown by a dotted line in figure 2) is fixedly connected with a left guide member 2-3-1 (shown by a dotted line in figure 2), the right seat side member 2-1-2 (shown by a dotted line in figure 2) is fixedly connected with a right guide member 2-3-2 (shown by a dotted line in figure 2), the part of the left guide member 2-3-1, which is close to the middle of the seat member 2-2, extends out of the inner side surface of the left seat side member 2-1-1, the part of the right guide member 2-3-2, which is close to the middle of the seat member 2-2, extends out of the inner side surface of the right seat side member 2-1-2, the left guide member 2-3-1 and the left upper frame cross member 3-2-1 form a left guide moving pair, and the right guide member 2-3-2 and the right upper frame And a right guide sliding pair. The seat side part 2-1, the seat part 2-2, the left guide part 2-3-1 and the right guide part 2-3-2 form a surrounding space K (shown by a dotted line in figure 2). The auxiliary supporting piece component 3-1-2 is an auxiliary supporting piece component II 3-1-2-2, the auxiliary supporting piece component II 3-1-2-2 is composed of an auxiliary supporting piece II 3-1-2-2-1 (shown by a dotted line in figure 2) and an expansion piece 3-1-2-2-2 (shown by a dotted line in figure 2), the auxiliary supporting piece II 3-1-2-2-1 is movably connected with the left rear main supporting piece 3-1-1-2-1-1-1 and the right rear main supporting piece 3-1-2-1-2 through a shaft piece 3-3 (shown by a dotted line in figure 2), the upper end of the auxiliary supporting piece II 3-1-2-2-1 is fixedly connected with the rear end of the expansion piece 3-1-2-2, the expansion piece 3-1-2-2-2 and the surrounding space K of the seat component 2 form a moving kinematic pair, and the expansion piece 3-1-2-2-2 and the frame cross piece 3-2 of the parallelogram mechanism 3-P move in parallel. The movable locking device 4 consists of a controllable gas spring 4-1 and a translational locking component 4-2 (not marked in the figure), the controllable gas spring 4-1 is arranged on the left parallelogram mechanism 3-P-Z, one end of the controllable gas spring 4-1 is fixedly connected with the left front main supporting piece 3-1-1-1-1, the other end of the controllable gas spring 4-1 is fixedly connected with the left rear main supporting piece 3-1-1-2-1-1, a control piece 4-1-1 of the controllable gas spring 4-1 is arranged on the left back side piece 1-1-1 of the back component 1, the translational locking component 4-2 consists of two vertical pieces 4-2-1, two pairs of pushing pieces 4-2-2 and two groups of handrail components II4-2-3, the two vertical members 4-2-1 are a left vertical member 4-2-1-1 and a right vertical member 4-2-1-2, the two pairs of pushing-resistant members 4-2-2 are a pair of left pushing-resistant member 4-2-1 and a pair of right pushing-resistant member 4-2-2-2, the two groups of handrail components II4-2-3 are composed of an upper handrail member II4-2-3-1 and a lower handrail member II 4-2-3-2 (shown by dotted lines in figure 2), the left vertical member 4-2-1-1 and the right vertical member 4-2-1-2 are respectively arranged on the corresponding lower frame cross member 3-2-2, the two pairs of pushing-resistant members 4-2-2 are respectively fixedly connected with the seat side member 2-1 of the corresponding seat component 2, the left vertical part 4-2-1-1 and the pair of left pushing-resistant parts 4-2-2-1 form a left sliding pair, and the right vertical part 4-2-1-2 and the pair of right pushing-resistant parts 4-2-2 form a right sliding pair. One end of each of the two upper handrail members II4-2-3-1 is rotatably connected with the corresponding two back side members 1-1 of the back component 1, the other end of each of the two upper handrail members II4-2-3-1 is rotatably connected with one end of the corresponding lower handrail member II 4-2-3-2, and the other end of each of the two lower handrail members II 4-2-3-2 is rotatably connected with the upper end of the corresponding two vertical members 4-2-1. The front cross-piece 3-1-1-1-2 of the front main support piece component 3-1-1-1 is connected with a pulley H. The figure shown by the two-dot chain line at the lower left of fig. 1 is a figure in a lying position.

See fig. 3 and 4. The second embodiment also comprises four parts, namely a back assembly 1, a seat assembly 2, a frame assembly 3 and a mobile locking device 4. The back component 1 mainly comprises two back side pieces 1-1, a back transverse baffle piece 1-2 and a back internal piece 1-3 (shown by dotted lines in figure 3), wherein the two back side pieces 1-1 are a left back side piece 1-1-1 and a right back side piece 1-1-2 respectively, the back transverse baffle piece 1-2 is fixedly connected with the two back side pieces 1-1 to form a back frame 1-J, and the back internal piece 1-3 is fixedly connected with the back frame 1-J. The seat component 2 consists of two seat side components 2-1 and a seat component 2-2, wherein the two seat side components 2-1 are a left seat side component 2-1-1 (shown by a dotted line in figure 4) and a right seat side component 2-1-2 (shown by a dotted line in figure 4), the left seat side component 2-1-1 is fixedly connected to the left side of the seat component 2-2, and the right seat side component 2-1-2 is fixedly connected to the right side of the seat component 2-2. The frame component 3 mainly comprises a support component 3-1 (not labeled in the figure), a four-piece cross component 3-2, a shaft component 3-3 and a limit component 3-4 (shown by dotted lines in figure 4), the support component 3-1 of the frame component 3 is two sets of main support components 3-1-1 (not labeled in the figure) and auxiliary support components 3-1-2, the two sets of main support components 3-1-1 are a front main support component 3-1-1-1 and a rear main support component 3-1-1-2, the front main support component 3-1-1-1 is composed of two front main support components 3-1-1-1 and a front cross member 3-1-1-2 (shown by dotted lines in figure 3), the two front main supporting pieces 3-1-1-1-1 are a left front main supporting piece 3-1-1-1-1-1 and a right front main supporting piece 3-1-1-1-2, the front cross-bar piece 3-1-1-1-2 is fixedly connected with the left front main supporting piece 3-1-1-1-1-1 and the right front main supporting piece 3-1-1-1-2, the rear main supporting piece component 3-1-1-2 is composed of two rear main supporting pieces 3-1-1-2-1 and a rear cross-bar piece 3-1-1-2-2, and the two rear main supporting pieces 3-1-1-2-1 are a left rear main supporting piece 3-1-1-2-1 and a right rear main supporting piece 3-1-1 The supporting pieces 3-1-1-2-1-2, the rear transverse piece 3-1-1-2-2 is fixedly connected on the left rear main supporting piece 3-1-1-2-1-1 and the right rear main supporting piece 3-1-1-2-2, the four transverse pieces 3-2 are two upper transverse pieces 3-2-1 and two lower transverse pieces 3-2-2, the two upper transverse pieces 3-2-1 are the left upper transverse piece 3-2-1-1 (shown by a dotted line in figure 4) and the right upper transverse piece 3-2-1-2 (shown by a dotted line in figure 4), the two lower transverse pieces 3-2-2 are the left lower transverse piece 3-2-1 and the right lower transverse piece 3-2-2 (shown by a dotted line in figure 4), the front end of the left upper frame cross member 3-2-1-1 is movably connected with the upper end of the left front main supporting piece 3-1-1-1-1, the rear end of the left upper frame cross member 3-2-1-1 is movably connected with the upper end of the left rear main supporting piece 3-1-1-2-1-1 through a shaft member 3-3, the front end of the right upper frame cross member 3-2-1-2 is movably connected with the upper end of the right front main supporting piece 3-1-1-1-2, the rear end of the right upper frame cross member 3-2-1-2 is movably connected with the upper end of the right rear main supporting piece 3-1-1-2, the front end of the left lower frame cross member 3-2-1 is movably connected with the left front main supporting piece 3-1-1-1-1 1-1, the rear end of the left lower frame cross member 3-2-2-1 is movably connected to the left rear main support member 3-1-1-2-1-1, the front end of the right lower frame cross member 3-2-2-2 is movably connected to the right front main support member 3-1-1-1-2, the rear end of the right lower frame cross member 3-2-2-2 is movably connected to the right rear main support member 3-1-1-2-1-2, a four-bar mechanism consisting of the upper frame cross member 3-2-1, the front main support member 3-1-1-1, the rear main support member 3-1-1-2-1 and the lower frame cross member 3-2-2 on the same side is a parallelogram mechanism 3-P, the parallelogram mechanism 3-P on the left side is a left parallelogram mechanism 3-P-Z, and the parallelogram mechanism 3-P on the right side is a right parallelogram mechanism 3-P-Y. The front main support piece component 3-1-1-1 of the parallelogram mechanism 3-P is fixedly connected with a limiting piece 3-4 (shown by a dotted line in figure 3). The auxiliary supporting component 3-1-2 of the present example is an auxiliary supporting component I3-1-2-1, which is composed of a U-shaped auxiliary supporting component I3-1-2-1-1 and two pressing and pulling components 3-1-2-1-2, two vertical edge parts of the U-shaped auxiliary supporting component I3-1-2-1-1 are respectively connected with the left rear main supporting component 3-1-1-2-1-1 and the right rear main supporting component 3-1-1-2-1-2 in a rotating way, the two pressing and pulling components 3-1-2-1-2 are respectively fixedly connected with the left upper frame transverse component 3-2-1-1 and the right upper frame transverse component 3-2-1-2, and long slots 3 arranged on two vertical edge parts of the U-shaped auxiliary supporting component I3-1-2-1-1 and-C (shown by a dotted line in figure 3) which are respectively connected with the two compression-pulling pieces 3-1-2-1-2 in a sliding way. The two seat side members 2-1 of the seat assembly 2 are respectively fixedly connected with the left upper frame cross member 3-2-1-1 and the right upper frame cross member 3-2-1-2. The movable locking device 4 is a controllable gas spring 4-1, the controllable gas spring 4-1 is arranged on the left parallelogram mechanism 3-P-Z, one end of the controllable gas spring 4-1 is fixedly connected to the left front main supporting piece 3-1-1-1-1, the other end of the controllable gas spring 4-1 is fixedly connected to the left rear main supporting piece 3-1-1-2-1-1, and the control piece 4-1-1 of the controllable gas spring 4-1 is arranged on the left back side piece 1-1-1 of the back component 1. The connection of the back assembly 1 and the parallelogram mechanism 3-P is: firstly, a left back side piece 1-1-1 is fixedly connected with a left back main supporting piece 3-1-1-2-1-1, and a right back side piece 1-1-2 is fixedly connected with a right back main supporting piece 3-1-1-2-1-2; the back component 1 and the parallelogram mechanism 3-P are connected by two groups of handrail components I5, each group of handrail components I5 is provided with an upper handrail I5-1 and a lower handrail I5-2 (shown by dotted lines in figure 4), the two upper handrails I5-1 are respectively movably connected with the two back side pieces 1-1 of the corresponding back component 1, and the two lower handrails I5-2 are respectively movably connected with the two upper frame cross pieces 3-2-1 of the parallelogram mechanism 3-P. The lower end of the auxiliary supporting component I3-1-2-1 is provided with a pulley H. The figure shown by the two-dot chain line at the lower left of fig. 3 is the figure when lying down.

With the above structure, the detailed operation and actions of the first and second examples of the main structure of the reclining chair and the reclining sofa with the mobile locking device are as follows.

The first embodiment is mainly operated and linked.

1. Switching of the chair or sofa from sitting to lying. When a chair or a sofa is in a sitting state, the controllable gas spring 4-1 locks the parallelogram mechanism 3-P, the seat component 2 is blocked and pushed on the two upper frame cross components 3-2-1 by the two vertical components 4-2-1 of the straight-moving locking component 4-2 and the two pairs of blocking and pushing components 4-2-2, and the U-shaped auxiliary supporting component I3-1-2-1-1 of the auxiliary supporting component 3-1-2 extends out of the two rear main supporting components 3-1-1-2-1 to play a role in stabilizing the sitting state. When switching to the lying position is desired, the control member 4-1-1 of the controllable gas spring 4-1 is pressed, and the controllable gas spring 4-1 loses its locking force but still has a constant force. After the person leans against the back component 1 and exerts force backwards, overcoming the constant force of the controllable gas spring 4-1, the back component 1 tilts backwards while: firstly, the U-shaped auxiliary supporting piece I3-1-2-1-1 is pressed downwards by the two pressing and pulling pieces 3-1-2-1-2 and the two lower frame cross pieces 3-2-2, so that the U-shaped auxiliary supporting piece I is almost synchronously moved backwards with the back component 1 and the weight center of the upper part of a person along the ground, and the stable switching from sitting to lying of a chair or a sofa is realized; secondly, the two rear main supporting pieces 3-1-1-2-1 pull the auxiliary supporting piece II 3-1-2-2-1 and the telescopic piece 3-1-2-2-2 backwards until the auxiliary supporting piece II 3-1-2-2-1 lands and the parallelogram mechanism 3-P is limited by the limiting piece 3-4; and thirdly, under the combined action of the two vertical parts 4-2-1 fixed on the two lower frame cross parts 3-2-2 and the two pairs of pushing resisting parts 4-2-2 fixed on the seat component 2, the seat component 2 moves forwards. The stretching of the chair or the sofa is realized by pulling the telescopic part 3-1-2-2-2 backwards and moving the seat component 2 forwards; the upper left handrail member II 4-2-3-Z-1 and the upper right handrail member II 4-2-3-Y-1 which are movably connected with the back side member 1-1 are pulled backwards, and the lower left handrail member II 4-2-3-Z-2 and the lower right handrail member II 4-2-3-Y-2 which are movably connected with the two vertical members 4-2-1 are pulled forwards, so that the handrail assembly II4-2-3 is suitable for lying state. After the switching from sitting to lying is completed, the control piece 4-1-1 of the controllable gas spring 4-1 is released, so that the chair or the sofa is in a lying position in a locking state.

2. Switching of the chair or sofa from lying down to sitting. When switching to the sitting position, the control member 4-1-1 of the controllable gas spring 4-1 is pressed, and the controllable gas spring 4-1 loses the locking force but still has a constant force. Under the pushing of the controllable gas spring 4-1 with constant force, the back component 1 returns to the original position forwards: firstly, the U-shaped auxiliary supporting piece I3-1-2-1-1 moves forwards synchronously with the back component 1 under the upward pulling of the two pressing and pulling pieces 3-1-2-1-2, and is retracted to the original position; secondly, the two rear main supporting pieces 3-1-1-2-1 push the auxiliary supporting piece II 3-1-2-2-1 and the telescopic piece 3-1-2-2-2 forward until the state is recovered to the sitting position; thirdly, under the combined action of the two vertical parts 4-2-1 and the two pairs of pushing-resisting parts 4-2-2, the seat component 2 moves backwards; and fourthly, the left upper handrail component II 4-2-3-Z-1 and the right upper handrail component II 4-2-3-Y-1 are pushed forwards by the back side component 1-1, and the left lower handrail component II 4-2-3-Z-2 and the right lower handrail component II 4-2-3-Y-2 are pulled backwards by the two vertical components 4-2-1, so that the handrail component II4-2-3 is restored to the original position. The telescopic part 3-1-2-2-2 is pushed forwards and the seat component 2 is moved backwards, so that the automatic contraction and switching of the chair or the sofa from lying to sitting is realized. After the switching is finished, the control piece 4-1-1 of the controllable gas spring 4-1 is loosened, the locking force of the controllable gas spring 4-1 is recovered, and the chair or the sofa is locked in a sitting state.

3. Stepless switching of sitting and lying of the chair or the sofa. Because: firstly, the controllable gas spring 4-1 can be locked at any position in a certain interval by the control part 4-1-1 at any time; and the U-shaped auxiliary supporting piece I3-1-2-1-1 always moves forwards or backwards synchronously with the back component 1 in the switching process. Thus, the chair or sofa can be stably locked by the controllable gas spring 4-1 at any position in the interval. Namely, the seat height and lying position of the sitting/lying chair or the sitting/lying sofa with the controllable gas spring 4-1 can stably realize stepless adjustment, and the condition that the prior telescopic sitting/lying dual-purpose chair only has one sitting position and one lying position is changed.

And secondly, the main operation and linkage of the second embodiment.

1. Switching of the chair or sofa from sitting to lying. When the chair or the sofa is in a sitting state, the controllable gas spring 4-1 locks the parallelogram mechanism 3-P and simultaneously locks the seat component 2 fixedly connected with the upper frame cross member 3-2-1. The U-shaped auxiliary supporting piece I3-1-2-1-1 of the auxiliary supporting piece component I3-1-2-1 extends out of the rear main supporting piece 3-1-1-2-1 for stabilizing the sitting. When the user wants to switch to the lying position, the control member 4-1-1 of the controllable gas spring 4-1 is pressed, and the controllable gas spring 4-1 loses the locking force but still has a constant force. After a person leans against the back component 1 to apply force backwards, and the constant force of the controllable gas spring 4-1 is overcome, the U-shaped auxiliary supporting piece I3-1-2-1-1 is pressed downwards by the two pressing and pulling pieces 3-1-2-1-2 fixed on the upper frame cross piece 3-2-1 while the back component 1 tilts backwards, so that the back component 1, the back component 1 and the upper body of the person synchronously move backwards along the ground until the limiting piece 3-4 on the parallelogram mechanism 3-P is in a limiting state, the left upper handrail I5-Z-1 movably connected with the left back side piece 1-1-1 and the right upper handrail I5-Y-1 movably connected with the right back side piece 1-1-2 are pulled backwards, the left lower handrail I5-Z-2 movably connected with the left upper frame cross piece 3-2-1-1 are pulled backwards, and the right lower armrest I5-Y-2 movably connected with the right upper frame cross member 3-2-1-2 moves forwards relatively, so that the armrest component I5 is suitable for lying, and the stable switching of the chair or the sofa from sitting to lying is realized. The control piece 4-1-1 of the controllable gas spring 4-1 is released, so that the chair or the sofa is in a locking state of a lying position. At this time, the chair or sofa is supported by the U-shaped auxiliary supporting member I3-1-2-1-1 and the front main supporting member 3-1-1-1-1.

2. Switching of the chair or sofa from lying down to sitting. When switching to the sitting position, the control member 4-1-1 of the controllable gas spring 4-1 is pressed, and the controllable gas spring 4-1 loses the locking force but still has a constant force. Under the pushing of the controllable gas spring 4-1 with constant force, the back component 1 is restored to the original position forwards, and simultaneously, the U-shaped auxiliary supporting piece I3-1-2-1-1 is synchronously moved forwards with the back component 1 under the upward pulling of the two pressing and pulling pieces 3-1-2-1-2, and is restored to the original position, and the seat component 2 is also restored to the state when in a sitting position. The left upper armrest I5-Z-1 and the right upper armrest I5-Y-1 are pushed forwards by the two back side pieces 1-1, so that the armrest component I5 is restored to the original position, and the automatic and stable switching from lying to sitting of the chair or the sofa is realized. After the switching is finished, the control piece 4-1-1 of the controllable gas spring 4-1 is released, the locking force of the controllable gas spring 4-1 is restored, and the chair or the sofa is locked in a sitting state.

3. Stepless switching of sitting and lying of the chair or the sofa. Because: firstly, the controllable gas spring 4-1 can be locked at any position in a certain interval by the control part 4-1-1 at any time; and the U-shaped auxiliary supporting piece I3-1-2-1-1 always moves forwards or backwards synchronously with the back component 1 in the switching process. Thus, the chair or sofa can be stably locked by the controllable gas spring 4-1 at any position in the interval. The chair or the sofa is supported by the U-shaped auxiliary supporting piece I3-1-2-1-1 and the front main supporting piece 3-1-1-1-1 at any position in the interval. Namely, the seat height and lying position of the sitting chair or the sitting sofa with the controllable gas spring 4-1 can stably realize stepless adjustment, and the condition that the prior telescopic sitting and lying dual-purpose chair only has one seat position and one lying position is changed.

Claims

1. A main structure of a sitting and lying sofa and a reclining chair with a movable locking device mainly comprises a back component, a seat component, a frame component, a movable locking device and the like, and is characterized in that the back component (1) mainly comprises two back side parts (1-1), a back cross baffle part (1-2) and a back internal part (1-3), the two back side parts (1-1) are respectively a left back side part (1-1-1) and a right back side part (1-1-2), the back cross baffle part (1-2) is fixedly connected to the proper positions of the two back side parts (1-1) to form a back frame (1-J), the back internal part (1-3) is fixedly connected to the back frame (1-J), the seat component (2) mainly comprises two seat side parts (2-1), Seat parts (2-2), the two seat side parts (2-1) are a left seat side part (2-1-1) and a right seat side part (2-1-2), the left seat side part (2-1-1) is fixedly connected with the left side of the seat part (2-2), the right seat side part (2-1-2) is fixedly connected with the right side of the seat part (2-2), the frame part (3) mainly comprises a support part component (3-1), a four frame cross part (3-2), a shaft part (3-3) and a limiting part (3-4), the support part component (3-1) of the frame part (3) mainly comprises two main support part components (3-1-1) and auxiliary support part components (3-1-2), the two sets of main support components (3-1-1) are a front main support component (3-1-1-1) and a rear main support component (3-1-1-2), the front main support component (3-1-1-1) is composed of two front main support components (3-1-1-1-1) and a front cross-bar component (3-1-1-1-2), the two front main support components (3-1-1-1-1) are a left front main support component (3-1-1-1-1-1) and a right front main support component (3-1-1-1-2), and the front cross-bar component (3-1-1-1-2) is fixedly connected with the left front main support component (3-1-1-1-1-1) and a right front main supporting piece (3-1-1-1-1-2), the rear main supporting piece assembly (3-1-1-2) consists of two rear main supporting pieces (3-1-1-2-1) and a rear cross-bar piece (3-1-1-2-2), the two rear main supporting pieces (3-1-1-2-1) are a left rear main supporting piece (3-1-1-2-1-1) and a right rear main supporting piece (3-1-1-2-1-2), and the rear cross-bar piece (3-1-1-2-2) is fixedly connected with the left rear main supporting piece (3-1-1-2-1) and the right rear main supporting piece (3-1-1-2-1-1) and the right rear main supporting piece (3-1-1-2-2) 1-1-2-1-2), the four upper cross members (3-2) are two upper cross members (3-2-1) and two lower cross members (3-2-2), the two upper cross members (3-2-1) are a left upper cross member (3-2-1-1) and a right upper cross member (3-2-1-2), the two lower cross members (3-2-2) are a left lower cross member (3-2-2-1) and a right lower cross member (3-2-2-2), the front end of the left upper cross member (3-2-1-1) is movably connected with the upper end of the left front main support member (3-1-1-1-1-1), the rear end of the left upper frame cross member (3-2-1-1) is movably connected with the proper position of the left rear main supporting piece (3-1-1-2-1-1) through a shaft member (3-3), the front end of the right upper frame cross member (3-2-1-2) is movably connected with the upper end of the right front main supporting piece (3-1-1-1-2), the rear end of the right upper frame cross member (3-2-1-2) is movably connected with the proper position of the right rear main supporting piece (3-1-1-2-1-2), the front end of the left lower frame cross member (3-2-2-1) is movably connected with the supporting piece of the left front main supporting piece (3-1-1-1-1-1) through a shaft member (3-3) and the proper position of the right rear main supporting piece (3-1-1-2) In a proper position, the rear end of the left lower frame cross member (3-2-2-1) is movably connected with a proper position of the left rear main supporting piece (3-1-1-2-1-1), the front end of the right lower frame cross member (3-2-2-2) is movably connected with a proper position of the right front main supporting piece (3-1-1-1-2), the rear end of the right lower frame cross member (3-2-2-2) is movably connected with a proper position of the right rear main supporting piece (3-1-1-2-1-2), and the upper frame cross member (3-2-1), the front main supporting piece (3-1-1-1) and the rear main supporting piece (3-1-1) on the same side are arranged on the proper position of the right rear main supporting piece (3-1-1-1-2-2), The four-bar mechanism composed of the rear main supporting piece (3-1-1-2-1) and the lower frame cross piece (3-2-2) is a parallelogram mechanism (3-P), the parallelogram mechanism (3-P) positioned at the left side of the frame part (3) is a left parallelogram mechanism (3-P-Z), the parallelogram mechanism (3-P) positioned at the right side of the frame part (3) is a right parallelogram mechanism (3-P-Y), the position-limiting piece (3-4) is fixedly connected with the proper position of the parallelogram mechanism (3-P), the auxiliary supporting piece component (3-1-2) is connected with the parallelogram mechanism (3-P), two sides of the seat component (2) are respectively connected with the upper frame cross piece (3-2-1) at the same side, the back component (1) is connected with the parallelogram mechanism (3-P), and the mobile locking device (4) is arranged on the parallelogram mechanism (3-P).

2. Main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized by the fact that the connection of said back assembly (1) and said parallelogram mechanism (3-P) is made by a form: two back side pieces (1-1) of the back component (1) are fixedly connected with corresponding back main supporting pieces (3-1-1-2-1) of the parallelogram mechanism (3-P).

3. Main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that the connection of said back assembly (1) and said parallelogram mechanism (3-P) is achieved by two forms simultaneously: two back side pieces (1-1) of the back component (1) are fixedly connected with corresponding back main supporting pieces (3-1-1-2-1) of the parallelogram mechanism (3-P); the back component (1) is connected with the parallelogram mechanism (3-P) through a handrail component I (5), the handrail component I (5) mainly comprises an upper handrail component I (5-1) and a lower handrail component I (5-2), the back side component (1-1) of the back component (1) is movably connected with one end of the upper handrail component I (5-1) of the handrail component I (5), the other end of the upper handrail component I (5-1) is movably connected with one end of the lower handrail component I (5-2), and the other end of the lower handrail component I (5-2) is movably connected with an upper frame cross member (3-2-1) of the parallelogram mechanism (3-P).

4. Main body structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that, the connection of both sides of said seat assembly (2) with said upper frame cross-piece (3-2-1) on the same side is realized as follows: the two seat side members (2-1) of the seat assembly (2) are respectively provided with a guide member (2-3), the guide member (2-3) is arranged on the left seat side member (2-1-1) and is a left guide member (2-3-1), the part of the left guide member (2-3-1) close to the middle part of the seat member (2-2) extends out of the inner side surface of the left seat side member (2-1-1), the guide member (2-3) is arranged on the right seat side member (2-1-2) and is a right guide member (2-3-2), the part of the right guide member (2-3-2) close to the middle part of the seat member (2-2) extends out of the inner side surface of the right seat side member (2-1-2), the left guide part (2-3-1) and the left upper frame transverse part (3-2-1-1) form a left guide moving pair, the right guide part (2-3-2) and the right upper frame transverse part (3-2-1-2) form a right guide moving pair, and the seat side part (2-1), the seat part (2-2), the left guide part (2-3-1) and the right guide part (2-3-2) form a surrounding space (K).

5. Main body structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that, the connection of both sides of said seat assembly (2) with said upper frame cross-piece (3-2-1) on the same side is realized as follows: the left seat side component (2-1-1) of the seat component (2) is fixedly connected with the left upper frame transverse component (3-2-1-1), and the right seat side component (2-1-2) of the seat component (2) is fixedly connected with the right upper frame transverse component (3-2-1-2).

6. A main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that the connection of said secondary support assembly (3-1-2) and said parallelogram mechanism (3-P) is realized as follows: the auxiliary support component (3-1-2) is an auxiliary support component I (3-1-2-1), the auxiliary support component I (3-1-2-1) mainly comprises an auxiliary support I (3-1-2-1-1) and a pressing and pulling piece (3-1-2-1-2), a proper part of the auxiliary support I (3-1-2-1-1) is rotatably connected with a proper part of a rear main support (3-1-1-2-1) of the parallelogram mechanism (3-P), the pressing and pulling piece (3-1-2-1-2) is fixedly connected to a proper position of a frame cross piece (3-2) of the parallelogram mechanism (3-P) at the same side, the part of the auxiliary supporting piece I (3-1-2-1-1) positioned at the lower end of the rotary connecting position of the auxiliary supporting piece I (3-1-2-1-1) and the rear main supporting piece (3-1-1-2-1) extends out of the rear main supporting piece (3-1-1-2-1), the part of the auxiliary supporting piece I (3-1-2-1-1) positioned at the other end of the rotary connecting position of the auxiliary supporting piece I (3-1-2-1-1) and the rear main supporting piece (3-1-1-1-2-1) is provided with a long groove (3-C), and the long groove (3-C) of the auxiliary supporting piece I (3-1-2-1-1) and the compression and pulling piece (3-1-1) at the same side are provided with long grooves (3-C) -2-1-2) is movably connected.

7. A main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that the connection of said secondary support assembly (3-1-2) and said parallelogram mechanism (3-P) is realized as follows: the auxiliary support component (3-1-2) is an auxiliary support component II (3-1-2-2), the auxiliary support component II (3-1-2-2) mainly comprises an auxiliary support component II (3-1-2-2-1) and a telescopic part (3-1-2-2-2), the auxiliary support component II (3-1-2-2-1) is connected with a rear main support component (3-1-1-2-1) of the parallelogram mechanism (3-P) through the shaft part (3-3), the upper end of the auxiliary support component II (3-1-2-2-1) is fixedly connected with the rear end of the telescopic part (3-1-2-2-2), the surrounding space (K) of the telescopic part (3-1-2-2-2) and the seat component (2) form a moving kinematic pair, and the telescopic part (3-1-2-2-2) and the frame cross part (3-2) of the parallelogram mechanism (3-P) move in parallel.

8. Main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized by that, the mobile locking device (4) is arranged on the parallelogram mechanism (3-P) as follows: the movable locking device (4) is a controllable gas spring (4-1), one end of the controllable gas spring (4-1) is fixedly connected to any one of the parallelogram mechanisms (3-P), the other end of the controllable gas spring (4-1) is fixedly connected to the other parallelogram mechanism (3-P) on the same side, and a control piece (4-1-1) of the controllable gas spring (4-1) is fixedly connected to a proper position of a product.

9. Main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized by that, the mobile locking device (4) is arranged on the parallelogram mechanism (3-P) as follows: the movable locking device (4) consists of a controllable gas spring (4-1) and a translational locking assembly (4-2), one end of the controllable gas spring (4-1) is fixedly connected with any one of the parallelogram mechanisms (3-P), the other end of the controllable gas spring (4-1) is fixedly connected with the other parallelogram mechanism (3-P) at the same side, a control element (4-1-1) of the controllable gas spring (4-1) is fixedly connected with a proper position of a chair or a sofa, the translational locking assembly (4-2) mainly consists of a vertical element (4-2-1), a pushing-blocking element (4-2-2) and an armrest assembly II (4-2-3), and the armrest assembly II (4-2-3) consists of an upper armrest element II (4-2-3-1) and a lower armrest element II (4-2-3-1) The hand piece II (4-2-3-2) is composed, a vertical piece (4-2-1) of the translational locking component (4-2) is fixedly connected with a lower frame cross piece (3-2-2), a push-blocking piece (4-2-2) of the translational locking component (4-2) is fixedly connected with a seat side piece (2-1) of the seat component (2), the vertical piece (4-2-1) and the push-blocking piece (4-2-2) on the same side form a translational kinematic pair, the upper end part of the vertical piece (4-2-1) is movably connected with one end of the lower handrail piece II (4-2-3-2) on the same side, the other end of the lower handrail piece II (4-2-3-2) is movably connected with one end of the upper handrail piece II (4-2-3-1), the other end of the upper handrail part II (4-2-3-1) is movably connected with the back side part (1-1) at the same side of the back component (1).

10. Main structure of reclining chair and lying sofa with mobile locking device according to claim 1, characterized in that the lower end of the supporting member assembly (3-1) is a pulley (H).