CN213154947U

CN213154947U - Leg rest device of sitting and lying seat using parallelogram as main body mechanism

Info

Publication number: CN213154947U
Application number: CN202021790620.7U
Authority: CN
Inventors: 韩宝兴; 张玉华
Original assignee: Jiangshan Qiqizheng Electromechanical Technology Co ltd
Current assignee: Jiangshan Qiqizheng Electromechanical Technology Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-05-11
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a leg supporter of sitting and lying seat using parallelogram as main body mechanism, which comprises a seat frame part with a parallelogram frame and a leg rest part. The upper ends of the left and right rear side-placing pieces with elongated grooves are respectively movably connected with the front ends of the left and right upper frame cross pieces, the elongated grooves are movably connected with left and right side-placing supporting pieces fixedly connected with the left and right lower frame cross pieces, the other ends of the elongated grooves are respectively movably connected with left and right front side-placing pieces with left and right inclined pieces, the elongated grooves and the left and right push rods form a moving pair, and left and right elastic pieces are arranged between the left and right front side-placing pieces and the left and right push rods. The main body mechanism tilts backwards, and the parts are linked: the left and right placing support pieces enable the left and right rear placing side pieces to move forwards and upwards, and push the left and right push rods and the left and right inclined pieces, so that the left and right front placing side pieces are turned forwards and positioned by the left and right positioning pins, and the foot placing pads on the left and right front placing side pieces extend forwards. Otherwise, the process is retracted. The utility model discloses an improvement and promotion to the thing to sit to lie and sit utensil bracket mode of using parallelogram as main part mechanism, whole linkage reaches to sit conveniently, reliably and comfortably and lies, enlarges the range of application.

Description

Leg rest device of sitting and lying seat using parallelogram as main body mechanism

Technical Field

The utility model belongs to the technical field of furniture class technique and specifically relates to an use bracket device of sitting and lying thing to sit that parallelogram was main part mechanism.

Background

The seat referred to herein is a generic term for chairs and sofas.

The technical scheme includes that the telescopic office and study chair with the sitting and lying dual-purpose chair with the patent number ZL201721517914.0 and the telescopic chair with the sitting and lying dual-purpose chair with the patent number ZL201820336205.0 and the main structure of the reclining chair with the mobile locking device and the sitting and lying sofa with the patent number ZL201920360712.2 are adopted, the popular consumption of the sitting and lying dual-purpose chair is tried to be realized, the use limitation of the existing sitting and lying reclining chair is changed, conditions are created for afternoon nap and rest of groups such as office workers and the like, conditions are created for lightening various hazards brought by long-time sitting, and conditions are created for improving the utilization rate of places or adapting to narrow and small places. Two common remarkable characteristics of the three technical schemes are as follows: firstly, a parallelogram mechanism is used as a main mechanism, and the dual-purpose of sitting and lying is realized by utilizing the motion characteristic of the parallelogram mechanism, so that the mechanism is stable and reliable; compared with the existing 'noon break chair', the novel noon break chair has the advantages of convenient and reliable operation, stable use and more suitability for noon break and rest; secondly, the lying state is convenient for the body to face upwards, and the feet are placed on the ground, so that the chair is comfortable and stable. However, in our practice, some users desire to lie on a bed with convenience both on the upper side and on the side, and the feet are higher.

In order to meet the requirements of the users, the products have wider application markets, the use limitations of the products are changed on the basis of ensuring the characteristics of the original products, the motion characteristics of the parallelogram mechanisms are further utilized, and the leg rest device is added through linkage, so that the comfortable requirements that the customers conveniently lie on the upper side and lie on the side and the feet are placed higher are met.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a leg supporter for a sitting/lying seat using a parallelogram as a main mechanism. The leg rest device is an improvement and a lifting of a leg rest mode of three technical schemes of ' telescopic sitting and lying dual-purpose office and learning chair ' with the patent number ZL201721517914.0, ' telescopic sitting and lying dual-purpose chair ' with the patent number ZL201820336205.0 and ' main structure of sitting and lying sofa ' with a mobile locking device ' with the patent number ZL 201920360712.2. Compared with the existing 'noon break chair', the operation is more convenient and reliable, the use is more stable, and the chair is more suitable for noon nap and rest of office staff.

In order to achieve the main object, the present invention is achieved by the following technical solutions. It mainly comprises a seat frame component and a foot rest component. The seat frame component mainly comprises a support component and a frame cross component, the support component comprises a front support component and a rear support component, the front support component comprises a front left support, a front right support and a front cross bar, one end of the front cross bar is fixedly connected with the proper position of the front left support, the other end of the front cross bar is fixedly connected with the proper position of the front right support, the rear support component comprises a rear left support, a rear right support and a rear cross bar, one end of the rear cross bar is fixedly connected with the proper position of the rear left support, the other end of the rear cross bar is fixedly connected with the proper position of the rear right support, the frame cross component comprises a seat small component, a lower left frame cross component and a lower right frame cross component, the seat small component comprises an upper left frame cross component, a lower frame cross component and a lower right frame cross component, The left side of the seat part is connected with the left upper frame cross part, the right side of the seat part is connected with the right upper frame cross part, the front end of the left upper frame cross part is rotationally connected with the upper end of the left front supporting piece, the rear end of the left upper frame cross part is rotationally connected with the proper position of the left rear supporting piece, the front end of the right upper frame cross part is rotationally connected with the upper end of the right front supporting piece, the rear end of the right upper frame cross part is rotationally connected with the proper position of the right rear supporting piece, the front end of the left lower frame cross part is rotationally connected with the proper position of the left front supporting piece, the rear end of the left lower frame cross part is rotationally connected with the proper position of the left rear supporting piece, and the front end of the right lower frame cross part is rotationally connected with the proper position of the right rear supporting piece, the rear end of the right lower frame cross member is rotatably connected to a proper position of the right rear support member, a four-bar mechanism consisting of the left upper frame cross member, the left front support member, the left rear support member and the left lower frame cross member is a left parallelogram mechanism, a four-bar mechanism consisting of the right upper frame cross member, the right front support member, the right rear support member and the right lower frame cross member is a right parallelogram mechanism, and the left parallelogram mechanism and the right parallelogram mechanism form a parallelogram frame through the connection of the front cross stop member, the rear cross stop member and the seat member. The leg rest part mainly comprises a support piece, a side placing piece and a leg rest pad, the support piece is placed on the left side and the support piece is placed on the right side, the side placing piece is placed on the left side and the side placing piece is placed on the right side, one end of the support piece is placed on the left side and is connected to a proper position of the parallelogram frame, the other end of the support piece is placed on the left side and is connected to the proper position of the side placing piece on the left side in a rotating mode, one end of the support piece is placed on the right side and is connected to the proper position of the parallelogram frame, the other end of the support piece is placed on the right side and is movably connected to the proper position of the side placing piece on the right side, one end of the side placing piece on the left side is connected to the proper position of the upper left part in front of the parallelogram frame in a rotating mode, one end of the side placing piece is connected to the proper position, the foot rest pad is connected to the side rest piece.

The support piece is a support piece I, the support piece I is a left support piece I and a right support piece I, the side piece I is a side piece I, the side piece I is a left side piece I and a right side piece I, the foot rest pad is a foot rest pad I, one end of the left support piece I is rotatably connected to a proper position of the rear support assembly, the other end of the left support piece I is rotatably connected to a proper position of the left support piece I, one end of the right support piece I is rotatably connected to a proper position of the rear support assembly, the other end of the right support piece I is rotatably connected to a proper position of the right side piece I, the upper end of the left support piece I is rotatably connected to a proper position of the front upper left part of the parallelogram frame, the upper end of the right support piece I is rotatably connected to a proper position of the front upper right upper part of the parallelogram frame, the foot rest pad I is connected to the left side placing piece I and the right side placing piece I.

The left support piece is a support piece II, the left support piece II is a left support piece II and a right support piece II, the side support piece II is a side support piece II, the side support piece II is a left side support piece II and a right side support piece II, the foot rest pad is a foot rest pad II, the left side support piece II and the right side support piece II are both provided with elongated slots at proper positions, one end of the left support piece II is fixedly connected to the left lower frame cross piece of the left parallelogram mechanism, the other end of the left support piece II is movably connected with the elongated slot of the left side support piece II, one end of the right support piece II is fixedly connected to the right lower frame cross piece of the right parallelogram mechanism, the other end of the right support piece II is movably connected with the elongated slot of the right side support piece II, the upper end of the left support piece II is rotatably connected to a proper position at the upper left part in front of the parallelogram mechanism, the upper end of the right side-placing part II is rotatably connected to a proper position of the front upper right part of the parallelogram frame, and the leg-placing pad II is connected to the left side-placing part II and the right side-placing part II.

The left support piece is a support piece III, the left support piece III is a left support piece III and a right support piece III, the side piece III is a side piece III, the side piece III consists of a front side piece III and a rear side piece III, the front side piece III is divided into a left front side piece III and a right front side piece III, the rear side piece III is divided into a left rear side piece III and a right rear side piece III, the foot rest pad is a foot rest pad III, the upper end of the left rear side piece III is rotationally connected to the proper position of the front upper left part of the parallelogram frame, the upper end of the right rear side piece III is rotationally connected to the proper position of the front upper right part of the parallelogram frame, the proper positions of the left rear side piece III and the right rear side piece III are provided with elongated slots, one end of the left support piece III is fixedly connected to the left lower cross piece of the left parallelogram frame, the other end of the left side placing support piece III is movably connected with the long groove of the left rear side placing piece III, one end of the right side placing support piece III is fixedly connected to the right lower frame cross piece of the right parallelogram mechanism, the other end of the right side placing support piece III is movably connected with the long groove of the right rear side placing piece III, the long groove of the left rear side placing piece III is movably connected with a left push rod III, the left rear side placing piece III and the left push rod III form a left movement moving pair, the long groove of the right rear side placing piece III is movably connected with a right push rod III, the right rear side placing piece III and the right push rod III form a right movement moving pair, the other end of the left rear side placing piece III is rotatably connected with one end of the left front side placing piece III, the other end of the right rear side placing piece III is rotatably connected with one end of the right front side placing piece III, left front one end of putting side piece III be provided with left sloping III, right front one end of putting side piece III be provided with right sloping III, left front put the one end that is connected with left elastic component III on the suitable position of side piece III, left back put the suitable position of side piece III on be connected with left elastic component III's the other end, right front put the suitable position of side piece III on be connected with right elastic component III's one end, right back put the suitable position of side piece III on be connected with right elastic component III's the other end, left back put side piece III with left front put side piece III between be provided with left locating pin III, right back put side piece III with right front put side piece III between be provided with right locating pin III, foot rest III connect left front put side piece III with right front put side piece III on.

And a positioning piece is arranged at a proper position of the parallelogram frame.

With the above structure, the following three typical leg rest device solutions can be formed for the leg rest device of the sitting and lying seat with the parallelogram as the main mechanism, and the main operation and actions of the leg rest device are described by taking the three typical leg rest device solutions as examples.

The placing support piece I is movably connected to the rear support combining piece.

When the seat is in a sitting position, the foot rest cushion I is contracted at the front lower part of the seat small component of the seat by the left resting support I and the right resting support I. The leg rest device generates the following linkage in the process of switching the seat from the sitting position to the lying position: whole parallelogram frame progressively slopes backward, support piece I is put on the left side of swing joint on it and support piece I is put on the right side and the preceding upper portion of parallelogram frame is pushed forward for swing joint puts the left side of the other end that support piece I and right side put support piece I and puts side piece I and put the right side and put the tie point on the preceding upper portion of parallelogram frame, rotate forward, until the parallelogram frame is fixed a position at a certain position by setting element or retaining member, realize seat spare translation down, bracket pad I extends forward, the switching from the seat to the position of lying has been accomplished.

The leg rest device generates the following linkage in the process of switching the seat from the lying position to the sitting position: the back support conjunction at parallelogram frame rear portion progressively resets forward, support piece I is put on the left side on swing joint it and support piece I is put on the right side and pull backward for the preceding upper portion of parallelogram frame, make swing joint put the left side of the other end that support piece I and right put support piece I and put side piece I on the right side and put the tie point on the preceding upper portion of parallelogram frame, backward rotate, realize the seat upwards translation and bracket pad I's retraction, until the parallelogram frame is locked at the seat by the retaining member, realized lying and positioned the switching to the seat.

And secondly, the left placing support piece II and the right placing support piece II are fixedly connected to the left lower frame cross piece and the right lower frame cross piece respectively.

When the seat is in the sitting position, the leg rest cushion II is contracted at the front lower part of the seat small component of the seat by the left resting support II and the right resting support II. The leg rest device generates the following linkage in the process of switching the seat from the sitting position to the lying position: the whole parallelogram frame is gradually inclined backwards, the upper ends of the left side-placing part II and the right side-placing part II are movably connected with the rotating point of the front upper part of the parallelogram frame and move backwards and downwards, the backward and downwards moving distance is larger than the backward and downwards translation distance of the left side-placing support part II and the right side-placing support part II which are respectively fixedly connected with the left lower cross member and the right lower cross member, the downward and backwards moving distance difference is added, and the upper ends of the left side-placing support part II and the right side-placing support part II are respectively movably connected with the long grooves of the left side-placing part II and the right side-placing part II, so that the left side-placing part II and the right side-placing part II are wound around the movable connecting point of the front upper part of the parallelogram frame and extend forwards while rotating forwards until the parallelogram frame is positioned at a certain position by a positioning piece or a locking piece, and the forward extension of the leg-placing cushion II and the downward translation of the seat, the switching from the sitting position to the lying position is completed.

The leg rest device generates the following linkage in the process of switching the seat from the lying position to the sitting position: the whole parallelogram frame is reset forwards, the upper ends of the left side-placing part II and the right side-placing part II and the rotating point of the front upper part of the parallelogram frame movably connected move forwards and upwards, the forward and upward moving distance is larger than the forward and upward translation distances of the left side-placing support part II and the right side-placing support part II respectively fixedly connected with the left lower cross member and the right lower cross member, the upward and forward moving distance difference is added, and the left side-placing part II and the right side-placing support part II are movably connected with the upper ends of the left side-placing support part II and the right side-placing support part II and the long groove of the left side-placing part II and the right side-placing part II, so that the left side-placing part II and the right side-placing part II are wound around the movable connecting point of the front upper part of the parallelogram frame, rotate backwards and contract backwards at the same time until the parallelogram frame is locked at the seat position by the locking piece, the cushion leg-placing part II is contracted at the, realize bracket pad II's shrink backward and reset, realized lying position to the switching of seat.

And the side placing piece III consists of a front side placing piece III and a rear side placing piece III.

When the seat is in the sitting position, the foot rest cushion III is contracted at the front lower part of the seat small component of the seat by the left resting support III, the right resting support III, the left elastic piece III and the right elastic piece III. The leg rest device generates the following linkage in the process of switching the seat from the sitting position to the lying position: the whole parallelogram frame is gradually inclined backwards, the upper ends of the left rear side placing piece III and the right rear side placing piece III are movably connected with the rotating point of the front upper part of the parallelogram frame and move backwards and downwards, the backward and downwards moving distance is larger than the backward and downwards translation distance of the left placing support piece III and the right placing support piece III which are respectively fixedly connected with the left lower frame cross piece and the right lower frame cross piece, the downward and backwards moving distance difference is added, and the upper ends of the left placing support piece III and the right placing support piece III are respectively movably connected with the long grooves of the left rear side placing piece III and the right rear side placing piece III, so that the left rear side placing piece III and the right rear side placing piece III rotate around the movable connecting point of the front upper part of the parallelogram frame and extend forwards while rotating; meanwhile, a left push rod III and a right push rod III of a left-right movement moving pair are formed by the left rear side placing piece III and the right rear side placing piece III and move forwards under the pushing of the left placing support piece III and the right placing support piece III respectively; left push rod III and right push rod III that move forward promote respectively to set up in the left front left oblique piece III of putting on side piece III and set up in the right front right oblique piece III of putting on side piece III, make left front put side piece III and right front put side piece III and rotate forward, and overturn forward under its self gravity and left elastic component III and right elastic component III's effect, put side piece III and left and right sides locating pin III location of controlling that left and right sides put between side piece III before about by setting element or retaining member location, until the parallelogram frame is fixed a position at a certain position by setting element or retaining member location, realize bracket pad III's forward extension, accomplished the switching of thing to lying position from the seat of sitting.

The leg rest device generates the following linkage in the process of switching the seat from the lying position to the sitting position: the whole parallelogram frame is gradually reset forwards, the upper ends of the left rear side placing piece III and the right rear side placing piece III are movably connected with the rotating point of the front upper part of the parallelogram frame and move forwards and upwards, the forward and upwards moving distance is greater than the forward and upwards translation distances of the left side placing support piece III and the right side placing support piece III which are respectively fixedly connected with the left lower frame cross piece and the right lower frame cross piece, the forward and upwards moving distance difference is added, and the upper ends of the left side placing support piece III and the right side placing support piece III are respectively movably connected with the long grooves of the left rear side placing piece III and the right rear side placing piece III, so that the left rear side placing piece III and the right rear side placing piece III are enabled to surround the movable connecting point of the front upper part of the parallelogram frame and rotate backwards and contract downwards; meanwhile, a left push rod III and a right push rod III of a left-right movement moving pair are formed by the left rear side placing piece III and the right rear side placing piece III, and are pulled down backwards on the left placing support piece III and the right placing support piece III to move backwards; the left rear side-placing piece III and the right rear side-placing piece III which rotate backwards and retract backwards drive the left front side-placing piece III and the right front side-placing piece III to rotate backwards and retract backwards together, when the left front side-placing piece III and the right front side-placing piece III rotate backwards and retract backwards to a certain position, the ground is touched, the left front side-placing piece III and the right front side-placing piece III respectively form a certain folding angle with the left rear side-placing piece III and the right rear side-placing piece III, the left elastic piece III and the right elastic piece III overturn upwards under the elastic force action of the left elastic piece III and the right elastic piece III until the parallelogram frame is locked at the seat position by the clamping piece, the leg-placing cushion III is clamped at the lower part of the left rear side-placing piece III, the right side-placing piece III, the left elastic piece III and the right elastic piece III to retract again at the front lower part of the seat piece small assembly of the seat, the resetting is realized.

To sum up, the utility model provides a pair of take parallelogram as main body mechanism sit leg rest device of thing to lie is to the improvement and the promotion of the leg rest mode of three technical scheme's of "the dual-purpose official working of lying of telescopic sitting of patent number ZL201721517914.0, study chair", the patent number is "a telescopic sitting of ZL201820336205.0 dual-purpose chair" and the patent number is ZL201920360712.2 "a deck chair of sitting with remove locking device and the major structure of sitting sofa of lying", be on the basis of above-mentioned product, further utilize its main body mechanism's motion characteristic, realize the linkage of thing to sit on the back of the body, thing to sit on, leg rest device and handrail, increase the leg rest device, satisfy the convenient and lie and the side of lying of customer, and the foot will put higher comfortable demand. The original product is optimized, and the market application range is expanded. Compared with the existing 'noon break chair', the operation is more convenient and reliable, the use is more stable, and the chair is more suitable for noon nap and rest of office staff.

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

Drawings

Fig. 1 is a left side view schematically showing a leg rest device of a sitting and lying seat with a parallelogram as a main mechanism;

fig. 2 is a schematic view of the footrest section of fig. 1 in an extended state.

Detailed Description

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

See fig. 1 and 2. The present example mainly consists of a seat frame part 1 and a footrest part 2. The seat frame component 1 mainly comprises a support component 1-1 and a frame cross component 2-1, the support component 1-1 is a front support component 1-1-1 and a rear support component 2-1-1, the front support component 1-1-1 comprises a left front support component 1-1-1, a right front support component 2-1-1, a front cross bar component 3-1-1 and a positioning component 4-1-1-1, one end of the front cross bar component 3-1-1-1 is fixedly connected with the left front support component 1-1-1, the other end of the front cross bar component 3-1-1 is fixedly connected with the right front support component 2-1-1-1, one end of the positioning component 4-1-1 is fixedly connected with the left front support component 1-1-1-1, the other end of the positioning piece 4-1-1-1 is fixedly connected with a right front supporting piece 2-1-1-1, the rear supporting component 2-1-1 is composed of a left rear supporting piece 1-2-1-1, a right rear supporting piece 2-2-1-1 and a rear cross-bar piece 3-2-1-1, one end of the rear cross-bar piece 3-2-1-1 is fixedly connected with the left rear supporting piece 1-2-1-1, the other end of the rear cross-bar piece 3-2-1-1 is fixedly connected with the right rear supporting piece 2-2-1-1, the frame cross-bar component 2-1 is composed of a seat piece small component 1-2-1, a left lower frame cross-bar piece 2-2-1 and a right lower frame cross-bar piece 3-2-1, the small seat component 1-2-1 consists of a left upper frame transverse member 1-1-2-1, a right upper frame transverse member 2-1-2-1 and a seat component 3-1-2-1, the left side of the seat component 3-1-2-1 is fixedly connected to the left upper frame transverse member 1-1-2-1, the right side of the seat component 3-1-2-1 is fixedly connected to the right upper frame transverse member 2-1-2-1, the front end of the left upper frame transverse member 1-1-2-1 is in sliding connection with the upper end of the left front supporting member 1-1-1, the rear end of the left upper frame transverse member 1-1-2-1 is in rotating connection with the left rear supporting member 1-2-1-1, the front end of the right upper frame transverse member 1-1-2-1 and the upper end of the right front supporting member 2-1-1-1 The rear end of the right upper frame transverse member 1-1-2-1 is rotationally connected with the right rear support member 2-2-1-1, the front end of the left lower frame transverse member 2-2-1 is rotationally connected with the left front support member 1-1-1, the rear end of the left lower frame transverse member 2-2-1 is rotationally connected with the left rear support member 1-2-1-1, the front end of the right lower frame transverse member 3-2-1 is rotationally connected with the right front support member 2-1-1, the rear end of the right lower frame transverse member 3-2-1 is rotationally connected with the right rear support member 2-2-1-1, and the front end of the left upper frame transverse member 1-1-2-1, the left front support member 1-1-1-1, The four-bar mechanism formed by the left rear support piece 1-2-1-1 and the left lower frame cross piece 2-2-1 is a left parallelogram mechanism Z-P, the four-bar mechanism formed by the right upper frame cross piece 1-1-2-1, the right front support piece 2-1-1, the right rear support piece 2-2-1-1 and the right lower frame cross piece 3-2-1 is a right parallelogram mechanism Y-P, and the left parallelogram mechanism Z-P and the right parallelogram mechanism Y-P form a parallelogram frame K-P by the connection of the front cross piece 3-1-1-1, the rear cross piece 3-2-1-1 and the seat piece 3-1-2-1. The leg rest part 2 mainly comprises a resting support part 1-2, a side resting part 2-2 and a leg rest pad 3-2, the resting support part 1-2 is a left resting support part 1-1-2 and a right resting support part 2-1-2, the side resting part 2-2 is a left side resting part 1-2-2 and a right side resting part 2-2-2, in the example, the resting support part 1-2 is a resting support part III1-2-III, the left resting support part 1-1-2 is a left resting support part III1-1-2-III, the right resting support part 2-1-2 is a right resting support part III2-1-2-III, the side resting part 2-2 is a side resting part III2-2-III, the side resting part 2-2-III consists of a front side resting part III1-2-2-III and a rear side resting part 2-2-2-III, the front side-resting piece III1-2-2-III is divided into a left front side-resting piece III1-1-2-2-III and a right front side-resting piece III2-1-2-2-III, the rear side-resting piece III2-2-2-III is divided into a left rear side-resting piece III1-2-2-III and a right rear side-resting piece III2-2-2-III, the foot-resting pad 3-2 is a foot-resting pad III3-2-III, the upper end of the left rear side-resting piece III1-2-2-III is rotatably connected to the left upper frame cross piece 1-1-2-1, the upper end of the right rear side-resting piece III2-2-2-III is rotatably connected to the right upper frame cross piece 2-1, the left rear side-resting piece III1-2-2-III and the right rear side-resting piece III2-2-2-III 2-III is provided with a long groove C, one end of a left support part III1-1-2-III is fixedly connected with a left lower frame cross member 2-2-1 of the parallelogram frame K-P, the other end of a left support part III1-1-2-III is connected with the long groove C of a left rear support part III1-2-2-III in a sliding manner, one end of a right support part III2-1-2-III is fixedly connected with a right lower frame cross member 3-2-1 of the parallelogram frame K-P, the other end of the right support part III2-1-2-III is connected with the long groove C of a right rear support part III2-2-2-III in a sliding manner, a left push rod III-III (shown by a dotted line in figure 1) is connected with the long groove C of a left rear support part III1-2-2-III in a sliding manner, the left rear side resting piece III1-2-2-III and the left push rod IIIZT-III form a left moving pair, the right rear side resting piece III2-2-2-2-III is connected with a right push rod IIIYT-III (shown by dotted lines in figure 1) in a sliding way on the long groove C, the right rear side resting piece III2-2-2-III and the right push rod IIIYT-III form a right moving pair, the other end of the left rear side resting piece III1-2-2-III is connected with one end of the left front side resting piece III1-1-2-2-III in a sliding way, the other end of the right rear side resting piece III2-2-2-III is connected with one end of the right front side resting piece III2-1-2-2-III in a rotating way, one end of the left front side resting piece III1-1-2-2-III is fixedly connected with a left inclined piece III ZX-III (shown by dotted lines in figure 1) One end of the right front side-resting piece III2-1-2-2-III is fixedly connected with a right inclined piece IIIYX-III (shown by a dotted line in figure 1), one end of a left elastic piece IIIZJ-III is connected on the left front side-resting piece III1-1-2-2-III, the other end of the left elastic piece IIIZJ-III is connected on the left rear side-resting piece III1-2-2-III, one end of a right elastic piece IIIYJ-III is connected on the right front side-resting piece III2-1-2-2-III, the other end of the right elastic piece IIIYJ-III is connected on the right rear side-resting piece III2-2-2-III, a left IIIlocating pin IIIYJ-III is arranged on the left rear side-resting piece III1-2-2-III, a right locating pin YD-III is arranged on the right rear side-resting piece III2-2-2-2-III, the foot rest pad III3-2-III is fixedly connected with the left front side resting piece III1-1-2-2-III and the right front side resting piece III 2-1-2-2-III. The lower two-dot chain line of fig. 1 shows a pattern when the user lies down.

With the above structure, the detailed operation and operation of the leg rest device of the sitting and lying seat using the parallelogram as the main mechanism are as follows.

When the seat is in the sitting position, the footrest III3-2-III is contracted by the left resting support III1-1-2-III, the right resting support III2-1-2-III, the left elastic member IIIZJ-III and the right elastic member IIIYJ-III at the front lower part of the seat small component 1-2-1 of the seat. The leg rest device generates the following linkage in the process of switching the seat from the sitting position to the lying position: the whole parallelogram frame K-P inclines backwards, the upper ends of the left rear side-resting piece III1-2-2-III and the right rear side-resting piece III2-2-2-2-III and the rotation points of the left upper frame cross piece 1-1-2-1 and the right upper frame cross piece 2-1-2-1 respectively move backwards and downwards, the backward and downward movement distance is larger than the backward and downward translation distances of the left side-resting support piece III1-1-2-III and the right side-resting support piece III2-1-2-III which are respectively fixedly connected with the left lower frame cross piece 2-2-1 and the right lower frame cross piece 3-2-1, the downward and backward movement distance difference is added with the upper ends of the left side-resting support piece III1-1-2-III and the right side-resting support piece III2-1-2-III and the upper end of the left rear side-resting piece III1-2-III 2-2-III and the long groove C of the right rear side resting piece III2-2-2-III are movably connected, so that the left rear side resting piece III1-2-2-III and the right rear side resting piece III2-2-2-2-III rotate around the rotating point of the left upper frame cross piece 1-1-2-1 and the right upper frame cross piece 2-1-2-1 and extend forwards at the same time of rotating forwards; meanwhile, a left push rod IIIZT-III and a right push rod IIIYT-III of a left and right movement pair are formed by the left rear side placing piece III1-2-2-III and the right rear side placing piece III2-2-2-III and move forwards under the pushing of the left side placing support piece III1-1-2-III and the right side placing support piece III2-1-2-III respectively; the left push rod IIIZT-III and the right push rod IIIYT-III which move forwards respectively push a left inclined piece IIIZX-III fixedly connected with the left front side resting piece III1-1-2-2-III and a right inclined piece III YX-III fixedly connected with the right front side resting piece III2-1-2-2-III so that the left front side resting piece III1-1-2-2-III and the right front side resting piece III2-1-2-2-III rotate forwards and turn over forwards under the action of the self gravity of the left front side resting piece III and the elasticity of the left elastic piece IIIZJ-III and the right elastic piece IIIYJ-III until a left positioning pin IIIZD-III arranged on the left rear side resting piece III1-2-2-III and a right positioning pin IIIYD-III arranged on the right rear side resting piece III2-2-2-2-III are positioned, the forward extension of the foot rest pad III3-2-III is realized, and the seat is switched from the sitting position to the lying position.

The leg rest device generates the following linkage in the process of switching the seat from the lying position to the sitting position: the whole parallelogram frame K-P is reset forwards, the upper ends of the left rear side-resting piece III1-2-2-III and the right rear side-resting piece III2-2-2-2-III are respectively moved forwards and upwards with the rotating points of the left upper frame cross piece 1-1-2-1 and the right upper frame cross piece 2-1-2-1, the forward and upward moving distance is larger than the forward and upward translation distances of the left side-resting support piece III1-1-2-III and the right side-resting support piece III2-1-2-III which are respectively fixedly connected with the left lower frame cross piece 2-2-1 and the right lower frame cross piece 3-2-1, the forward and upward moving distance difference is added with the upper ends of the left side-resting support piece III1-1-2-III and the right side-resting support piece III2-1-2-III and the upper ends of the left rear side-resting piece III1-2-III 2-2-III and the right rear side-resting piece III2-2-2-2-III are movably connected through the long grooves C, so that the left rear side-resting piece III1-2-2-2-III and the right rear side-resting piece III2-2-2-III rotate around the rotating points of the left upper frame cross piece 1-1-2-1 and the right upper frame cross piece 2-1-2-1 and contract downwards while rotating backwards; meanwhile, a left push rod IIIZT-III and a right push rod IIIYT-III of a left and right movement moving pair are formed by the left rear side placing piece III1-2-2-III and the right rear side placing piece III2-2-2-III, and move backwards under the back pull of the left side placing support piece III1-1-2-III and the right side placing support piece III 2-1-2-III; the left front side-resting piece III1-1-2-2-III and the right front side-resting piece III2-1-2-2-III rotate and retract together, when the left front side-resting piece III1-1-2-2-III and the right front side-resting piece III2-1-2-2-III rotate and retract together to a certain position, the ground is touched, so that the left front side-resting piece III1-1-2-2-III and the right front side-resting piece III2-1-2-2-III respectively form a certain folding angle with the left rear side-resting piece III1-2-2-III and the right rear side-resting piece III2-2-III, and the left front side-resting piece III3-2-III is overturned upwards under the elastic force of the left elastic piece IIIZJ-III and the right elastic piece III YJ-III, and the left leg-resting pad III3-2-III is overturned by the left support piece III1-1-2-III, The right placing support part III2-1-2-III, the left elastic part IIIZJ-III and the right elastic part IIIYJ-III are contracted at the front lower part of the seat part small component 1-2-1 of the seat again to realize resetting.

To sum up, the utility model provides a pair of take parallelogram as main body mechanism sit leg rest device of thing to lie is to the improvement and the promotion of the leg rest mode of three technical scheme's of "the dual-purpose official working of lying of telescopic sitting of patent number ZL201721517914.0, study chair", the patent number is "a telescopic sitting of ZL201820336205.0 dual-purpose chair" and the patent number is ZL201920360712.2 "a deck chair of sitting with remove locking device and the major structure of sitting sofa of lying", be on the basis of above-mentioned product, further utilize its main body mechanism's motion characteristic, realize the linkage of thing to sit on the back, thing to sit on the seat, leg rest device and handrail, reach convenient, reliably and comfortably sit and lie dual-purpose, change the use limitation of original product, enlarge market range of application. Compared with the existing 'noon break chair', the operation is more convenient and reliable, the use is more stable, and the chair is more suitable for noon nap and rest of office staff.

Claims

1. A leg rest device of sitting and lying seat taking a parallelogram as a main mechanism mainly comprises two parts, namely a seat frame part and a leg rest part, and is characterized in that the seat frame part (1) mainly comprises a support component (1-1) and a frame cross component (2-1), the support component (1-1) comprises a front support component (1-1-1) and a rear support component (2-1-1), the front support component (1-1-1) comprises a left front support component (1-1-1), a right front support component (2-1-1) and a front cross baffle component (3-1-1-1), one end of the front cross baffle component (3-1-1-1) is fixedly connected at a proper position of the left front support component (1-1-1-1), the other end of the front transverse baffle (3-1-1-1) is fixedly connected with a proper position of the right front supporting piece (2-1-1-1), the rear supporting component (2-1-1) consists of a left rear supporting piece (1-2-1-1), a right rear supporting piece (2-2-1-1) and a rear transverse baffle (3-2-1-1), one end of the rear transverse baffle (3-2-1-1) is fixedly connected with a proper position of the left rear supporting piece (1-2-1-1), the other end of the rear transverse baffle (3-2-1-1) is fixedly connected with a proper position of the right rear supporting piece (2-2-1-1), the transverse frame component (2-1) consists of a small seat component (1-2-1), a left lower transverse frame component (2-2-1) and a right lower transverse frame component (3-2-1), the small seat component (1-2-1) consists of a left upper transverse frame component (1-1-2-1), a right upper transverse frame component (2-1-2-1) and a seat component (3-1-2-1), the left side of the seat component (3-1-2-1) is connected to the left upper transverse frame component (1-1-2-1), the right side of the seat component (3-1-2-1) is connected to the right upper transverse frame component (2-1-2-1), the front end of the left upper transverse frame component (1-1-2-1) and the left front supporting piece (support piece) 1-1-1-1), the rear end of the left upper frame cross member (1-1-2-1) is rotatably connected with the proper position of the left rear support member (1-2-1-1), the front end of the right upper frame cross member (2-1-2-1) is rotatably connected with the upper end of the right front support member (2-1-1-1), the rear end of the right upper frame cross member (2-1-2-1) is rotatably connected with the proper position of the right rear support member (2-2-1-1), the front end of the left lower frame cross member (2-2-1) is rotatably connected with the proper position of the left front support member (1-1-1-1), and the rear end of the left lower frame cross member (2-2-1) is rotatably connected with the left rear support member The front end of the right lower frame cross member (3-2-1) is rotatably connected to the proper position of the right front support member (2-1-1-1) on a proper position of the member (1-2-1-1), the rear end of the right lower frame cross member (3-2-1) is rotatably connected to the proper position of the right rear support member (2-2-1-1), a four-bar mechanism consisting of the left upper frame cross member (1-1-2-1), the left front support member (1-1-1), the left rear support member (1-2-1-1) and the left lower frame cross member (2-2-1) is a left parallelogram mechanism (Z-P), and the right upper frame cross member (2-1-2-1) and the left lower frame cross member (2-2-1) form a left parallelogram mechanism (Z-P), The four-bar mechanism composed of the right front support (2-1-1-1), the right rear support (2-2-1-1) and the right lower frame cross member (3-2-1) is a right parallelogram mechanism (Y-P), the left parallelogram mechanism (Z-P) and the right parallelogram mechanism (Y-P) form a parallelogram frame (K-P) through the connection of the front cross baffle member (3-1-1-1), the rear cross baffle member (3-2-1-1) and the seat member (3-1-2-1), the leg rest part (2) mainly comprises a support placing member (1-2), a side placing member (2-2) and a leg rest pad (3-2), the laying support piece (1-2) is a left laying support piece (1-1-2) and a right laying support piece (2-1-2), the laying support piece (2-2) is a left laying support piece (1-2-2) and a right laying support piece (2-2-2), one end of the left laying support piece (1-1-2) is connected to a proper position of the parallelogram frame (K-P), the other end of the left laying support piece (1-1-2) is movably connected to a proper position of the left laying support piece (1-2-2), one end of the right laying support piece (2-1-2) is connected to a proper position of the parallelogram frame (K-P), and the other end of the right laying support piece (2-1-2) is rotatably connected to the right laying support piece (2-2) 2) The right side placing part (2-2-2) is rotationally connected with the proper position of the front upper left part of the parallelogram frame (K-P), one end of the left side placing part (1-2-2) is rotationally connected with the proper position of the front upper right part of the parallelogram frame (K-P), and the leg placing cushion (3-2) is connected with the side placing part (2-2).

2. The leg rest device of sitting and lying sitting tool with parallelogram as main body mechanism as claimed in claim 1, wherein the resting support (1-2) is a resting support I, the resting support I is a left resting support I and a right resting support I, the resting support (2-2) is a resting support I, the resting support I is a left resting support I and a right resting support I, the leg rest pad (3-2) is a leg rest pad I, one end of the left resting support I is rotatably connected to the proper position of the rear support assembly (2-1-1), the other end of the left resting support I is rotatably connected to the proper position of the left resting support I, one end of the right resting support I is rotatably connected to the proper position of the rear support assembly (2-1-1), the right side put support piece I's the other end rotate connect and put on the right side put side piece I's the suitable position, the left side put the upper end of side piece I rotate connect and be in parallelogram frame (K-P) preceding suitable position of upper left portion on, the right side put the upper end of side piece I rotate connect and be in parallelogram frame (K-P) preceding suitable position on the upper right portion on, bracket pad I connect put on the left side put side piece I with the right side put on side piece I.

3. The leg rest device of sitting and lying seat with parallelogram as main body mechanism according to claim 1, wherein the support members (1-2) are left support members II, the left support members II and right support members II, the side members (2-2) are left support members II and right support members II, the side members II are left support members II and right support members II, the leg rest pads (3-2) are leg rest pads II, the left support members II and the right support members II are provided with elongated slots (C) at suitable positions, one end of the left support member II is fixedly connected to the left lower frame cross member (2-2-1) of the parallelogram frame (K-P), the other end of the left support member II is movably connected to the elongated slots (C) of the left support member II, the right side put support piece II's one end link firmly parallelogram frame (K-P) right lower frame horizontal member (3-2-1) on, the right side put support piece II's the other end and the right side put side piece II's elongated slot (C) swing joint, the left side put side piece II's upper end swing joint in parallelogram frame (K-P) preceding suitable position of upper left portion on, the right side put side piece II's upper end rotate to be connected parallelogram frame (K-P) preceding suitable position of upper right portion on, bracket pad II connect left side put side piece II with the right side put side piece II on.

4. The leg rest device of sitting and lying seat with parallelogram as main body mechanism as claimed in claim 1, wherein the resting support (1-2) is resting support III (1-2-III), the resting support III (1-2-III) is left resting support III (1-1-2-III) and right resting support III (2-1-2-III), the side resting member (2-2) is side resting member III (2-2-III), the side resting member III (2-2-III) is composed of front side resting member III (1-2-2-III) and back side resting member III (2-2-2-III), the front side resting member III (1-2-2-III) is divided into left front side resting member III (1-1-2-2-III) and right front side resting member III (III), (2-2-III) 2-1-2-2-III), the rear side-resting part III (2-2-2-III) is divided into a left rear side-resting part III (1-2-2-2-III) and a right rear side-resting part III (2-2-2-2-III), the foot-resting pad (3-2) is a foot-resting pad III (3-2-III), the upper end of the left rear side-resting part III (1-2-2-2-III) is rotatably connected to a proper position on the front upper left part of the parallelogram frame (K-P), the upper end of the right rear side-resting part III (2-2-2-2-III) is rotatably connected to a proper position on the front upper right part of the parallelogram frame (K-P), and the left rear side-resting part III (1-2-2-2-III) and the right rear side-resting part III are The proper positions of the left placing support members III (1-1-2-III) are all provided with elongated slots (C), one end of the left placing support member III (1-1-2-III) is fixedly connected with a left lower frame cross member (2-2-1) of the parallelogram frame (K-P), the other end of the left placing support member III (1-1-2-III) is movably connected with the elongated slots (C) of the left rear placing side member III (1-2-2-III), one end of the right placing support member III (2-1-2-III) is fixedly connected with a right lower frame cross member (3-2-1) of the parallelogram frame (K-P), and the other end of the right placing support member III (2-1-2-III) and the right rear placing side member III (2-2-2-2- III), the left rear elongated slot (C) of side piece III (1-2-2-2-III) go up swing joint has left push rod III (ZT-III), the left rear elongated slot (C) of side piece III (1-2-2-2-III) and the left push rod III (ZT-III) constitute left movement and move vice, the right rear elongated slot (C) of side piece III (2-2-2-2-III) go up swing joint has right push rod III (YT-III), the right rear elongated slot (C) of side piece III (2-2-2-2-III) and the right push rod III (YT-III) constitute right movement and move vice, the left rear other end of side piece III (1-2-2-2-III) and the left front one end of side piece III (1-1-2-2-2-III) link even activity Then, the other end of the right rear side-placing piece III (2-2-2-2-III) is rotatably connected with one end of the right front side-placing piece III (2-1-2-2-III), one end of the left front side-placing piece III (1-1-2-2-III) is provided with a left inclined piece III (ZX-III), one end of the right front side-placing piece III (2-1-2-2-III) is provided with a right inclined piece III (YX-III), the proper position of the left front side-placing piece III (1-1-2-2-III) is connected with one end of a left elastic piece III (ZJ-III), the proper position of the left rear side-placing piece III (1-2-2-III) is connected with the other end of the left elastic piece III (ZJ-III), one end of a right elastic piece III (YJ-III) is connected with a proper position of the right front resting side piece III (2-1-2-2-III), the right rear side placing piece III (2-2-2-2-III) is connected with the other end of the right elastic piece III (YJ-III) at a proper position, a left positioning pin III (ZD-III) is arranged at a proper position of the left rear side placing piece III (1-2-2-2-III), a right positioning pin III (YD-III) is arranged at a proper position of the right rear side placing piece III (2-2-2-2-III), the foot rest pads III (3-2-III) are connected to the left front side placing piece III (1-1-2-2-III) and the right front side placing piece III (2-1-2-2-III).

5. Leg rest device of sitting and lying furniture with parallelogram as main body mechanism according to claim 1, characterized in that the parallelogram frame (K-P) is provided with positioning members (4-1-1-1) at suitable positions.