CN114468638B

CN114468638B - Full-dynamic seat

Info

Publication number: CN114468638B
Application number: CN202111659128.5A
Authority: CN
Inventors: 毛立; 孙杰; 沈杰; 陆翰南; 魏磊
Original assignee: Sunon Technology Co Ltd
Current assignee: Sunon Technology Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2024-10-15
Anticipated expiration: 2041-12-30
Also published as: CN114468638A; WO2023123988A1

Abstract

The invention discloses a full-dynamic seat, which comprises a base, a seat support and a seat support, wherein the base is used for connecting a chair back component and a seat support component; the rotary connecting shaft is arranged between the base and the chair back component; the bottom of the chair back component is provided with a movable mounting seat; the rotary connecting shaft comprises a swinging section penetrating into the base and rotary sections penetrating through two sides of the base respectively and rotationally connected with the movable mounting seat; the swinging section can swing left and right by taking the middle position of the base as a fulcrum; the elastic support body is arranged between the front end of the seat assembly and the base; the rear end of the seat assembly is connected to the movable mounting seat; in the tilting process, the chair back component and the chair seat component move forward and backward along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly bends and deforms along the forward and backward directions; in the swinging process, the chair back component and the chair seat component swing left and right along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly generates elastic torsional deformation along the left and right direction; the seat is flexible and comfortable to use.

Description

Full-dynamic seat

Technical Field

The invention relates to the field of seats, in particular to a full-dynamic seat.

Background

Office chairs are an indispensable product in office furniture, and are favored by consumers because of good practicability. Moreover, the modern office environment emphasizes sports, and is considered to be unfavorable for health for long-term maintenance of one posture, so that people are encouraged to sit and stand alternately; even in a sitting posture, the seat is hoped not to be always fixed, and can be correspondingly changed along with the change of the dynamic posture of the body, so that the comfort of the human body is ensured, and the health is facilitated. The adjusting functions of the seat and the backrest of the office chair in the market at present are mostly limited to forward tilting or backward tilting, and the seat and the backrest can move in the front-back direction so as to meet the dynamic sitting posture of a user, and the use comfort of the user is improved; however, in the actual use process, the activity state of the human body is not limited to forward tilting or backward tilting, and the user can lean sideways to talk, lean sideways to take things and the like when sitting, and the action of tilting left or right is very frequent; therefore, when the user uses the office chair, the user has dynamic sitting posture change in the front-back direction and the left-right direction; the existing seat can not be correspondingly adjusted according to the left-leaning or right-leaning posture of the user, can not meet the requirements of the user on sitting posture diversification, and is relatively poor in self-adaption, flexibility and comfort. In order to overcome the defects in the prior art, a seat with the seat and the back capable of tilting and swinging correspondingly left or right along with the posture of the seat and the back of a human body, and the seat with the seat and the back has high flexibility, good comfort and ergonomic chair back follow-up swinging needs to be provided.

The utility model patent number CN202120829676.7 discloses a chair capable of swinging left and right, which comprises a chair foot rest supported on the ground, a tray connected to the top end of the chair foot rest and a chair back connected to the rear end of the tray; the top of the tray is fixedly connected with a fixing seat; the fixed seat is provided with a rotating shaft extending along the front and rear directions and penetrating through the front and rear side walls of the fixed seat, a seat is arranged above the fixed seat, and the front and rear ends of the seat are fixedly connected with the front and rear ends of the rotating shaft respectively; the two sides of the fixed seat are fixedly connected with an armrest frame which avoids the left-right swinging range of the seat and extends upwards, and the armrest frame is higher than the top of the seat and is provided with an armrest structure for supporting arms. The chair has the beneficial effects that the function of swinging left and right is separated from the tray, so that the structure of the chair is more reasonable, and the swinging stability is improved. The chair realizes the left-right swing of the chair seat by arranging the rotating shaft extending in the front-back direction; however, the fixing seat is fixedly connected to the tray, and the chair back is connected to the rear end of the tray, so that the rotating shaft can only swing left and right of the chair seat; if the tilting movement of the seat needs to be realized, a tilting structure is additionally arranged, so that the structural design is complicated. And, the pivot runs through in the fixing base along fore-and-aft direction, and certainly occupation space is bigger, and the tray inside of seat often still needs to set up control structure or gas pole adjustment mechanism etc. of acting as go-between for structural installation is also inconvenient.

Patent document CN201920759280.2 discloses a chair capable of tilting back and forth and twisting left and right, belonging to the technical field of chairs. The novel damping device comprises a cushion, a chassis, a cushion front point connecting piece, a cushion rear point connecting piece, a right connecting part and a left connecting part, wherein one end of the cushion rear point connecting piece is arranged on two sides of the chassis and fixedly connected with a damping torque output end of the chassis, two sides of the damping torque output end of the chassis or two sides of the cushion rear point connecting piece are respectively and fixedly connected with a sliding piece, and the right connecting part and the left connecting part are respectively and elastically matched with the sliding piece in an up-down elastic sliding manner in a direction perpendicular to the sliding piece or in a direction forming a certain angle with a perpendicular straight line at two sides of the chassis. The chair capable of tilting forward and backward and twisting left and right is reasonable in design, and on the basis of an existing universal chassis, a series of mechanisms are added, so that the chair can tilt left and right correspondingly along with the posture change of a human body while the forward and backward tilting function is met, the functions of the chair are enriched, and the requirements of users are met. The chair can tilt back and forth and can tilt left and right; however, the right and left connecting parts, sliding parts and other structures for tilting and twisting the chair are arranged outside the chassis and exposed outside the chassis; the structure is complicated, and the simplicity and the appearance are not enough.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a full-dynamic seat, wherein a movable mounting seat at the bottom of a seat back component is connected to the rear end of a base through a rotary connecting shaft, and the rotary connecting shaft comprises a swinging section capable of swinging left and right relative to the base and a rotary section respectively penetrating through two sides of the base and rotationally connected with the movable mounting seat; the rear end of the chair seat component is connected to the movable mounting seat, so that the chair back component and the chair seat component can correspondingly tilt and rotate and swing left and right according to the dynamic sitting posture change of a user, and the chair is flexible and comfortable to use; and an elastic support body is arranged between the front end of the seat assembly and the base, and the elastic support body can respond to the movement of the seat assembly to correspondingly generate elastic deformation and provide reset elastic force.

The technical scheme of the invention is realized as follows:

a fully dynamic seat comprising: the base is used for connecting and supporting the chair back component and the chair seat component of the chair; the chair back component is connected to the rear end of the base, and the chair seat component is connected above the base; the rotary connecting shaft is arranged between the base and the chair back component; the bottom of the chair back component is provided with a movable mounting seat; the rotary connecting shaft comprises a swinging section horizontally penetrating through the base and rotary sections penetrating through two sides of the base and connected with the movable mounting seat; the swinging section can swing left and right by taking the middle position of the base as a fulcrum; the rotating section is in rotating fit with the movable mounting seat, so that the movable mounting seat can rotate back and forth relative to the base around the rotating connecting shaft; the elastic support body is arranged between the front end of the seat assembly and the base; the elastic support body is configured to be capable of undergoing corresponding elastic deformation in response to movement of the seat assembly and to provide a return elastic force; the movable mounting seat also comprises a bearing part which extends outwards towards two sides, and the rear end of the seat assembly is connected to the bearing part; in the tilting process, the chair back component and the chair seat component move forward and backward along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly bends and deforms along the forward and backward directions; in the swinging process, the chair back component and the chair seat component swing left and right along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly generates elastic torsional deformation along the left and right directions.

Preferably, the elastic support body is inclined forward and upward from the back to the front; the lower end of the elastic support body is fixedly connected with the base, and the upper end of the elastic support body is hinged with the seat assembly; and the seat assembly is in a picking state relative to the base. The upper end of the spring support body is hinged with the base, so that the joint of the seat assembly and the spring support body can be self-adaptively rotated and adjusted in the movement process of the seat assembly, the seat assembly is not easy to break, and the structural stability is improved; the chair seat component is hollow relative to the base, and the structure is simple and attractive; the chair seat component is light and flexible when being stressed and moves relative to the base.

Preferably, the elastic support body is made of spring steel sheet. Adopts a spring steel sheet to form a spring, the strength is high and the durability is high; the spring steel sheet can be elastically deformed in the front-back direction and the left-right direction, can also ensure the connection strength between the seat assembly and the base, and provides enough reset elastic force.

Preferably, the seat assembly is of a frame structure, the seat assembly comprises seat side rods respectively positioned at two sides, and the rear ends of the seat side rods are connected to the bearing part; the chair back assembly is of a frame structure and comprises back side rods which are respectively positioned vertically at two sides; an elastic L-shaped elastic connecting rod with elasticity is arranged between the seat side rod and the back side rod; when the chair back component moves backwards, the elastic connecting rod deforms and generates reset elastic force. Then the chair back component and the chair seat component can form linkage through the movable mounting seat; the two are connected together through the elastic connecting rod, so that the seat back has good integration; when the chair back component and the chair seat component are in backward tilting movement, the elastic connecting rod can also correspondingly elastically deform, so that the inclination angle of the chair back component is larger, and then the back inclination angle is larger; the chair back component and the chair seat component have a splayed movement trend, so that the chair is more comfortable to use.

Preferably, the base is hollow and is formed with a containing space; a fixed seat is arranged at the rear end of the accommodating space, and the swinging segment is penetrated in the fixed seat along the left-right direction; a rotating structure is arranged between the fixed seat and the swinging section; the rotating structure comprises a positioning support shaft penetrating through the fixing seat along the front-back direction, the positioning support shaft is positioned at the middle position of the fixing seat, and the positioning support shaft is positioned at the lower end of the swinging section; a rotating groove which can be in rotating fit with the positioning support shaft is arranged at a corresponding position at the bottom of the swinging section; the positioning support shaft is embedded and rotationally matched in the rotating groove, so that the swinging section can rotate left and right in the fixing seat around the positioning support shaft. The positioning support shafts are arranged in the fixing seat of the base along the front-back direction, and the bottoms of the swinging sections are correspondingly provided with rotating grooves; so that the positioning support shaft is embedded and rotationally matched in the rotating groove; the positioning support shaft can limit the left-right offset of the swinging section and enable the swinging section to swing left and right by taking the positioning support shaft as a fulcrum; the utility model has two functions, and the structural design is ingenious.

Preferably, the rear end of the base is provided with a through hole, the rotary connecting shaft is arranged in the fixed seat in a penetrating way in advance, and the positioning support shaft is arranged in the fixed seat in a penetrating way and is embedded in the rotary groove; and the positioning support shaft is in interference fit with the fixing seat. When the rotary connecting shaft is installed, the rotary connecting shaft is firstly penetrated in the fixing seat; then the positioning support shaft is penetrated into the fixed seat, and the positioning support shaft can be just embedded into a rotating groove at the lower end of the rotating connecting shaft; thereby completing the assembly of the rotary connecting shaft and playing a role in positioning and mounting; and the positioning support shaft is in interference fit with the fixing seat, and then friction force is arranged between the positioning support shaft and the fixing seat, so that the positioning support shaft can be limited to be separated from the fixing seat, and the connection is convenient and quick.

Preferably, a first rotating groove penetrating left and right is arranged in the fixed seat, and the swinging segment is penetrated in the first rotating groove; the height of the first rotating groove in the vertical direction is larger than the diameter of the rotating connecting shaft; and the outer side walls on two sides of the base are correspondingly provided with second rotating grooves which are penetrated by the avoidance rotating connecting shafts, and the height of the second rotating grooves in the vertical direction is larger than that of the first rotating grooves. The rotating connecting shaft takes the central position of the fixed seat as a rotating point, and then the farther away from the fixed seat, the larger the swinging distance of the rotating connecting shaft in the vertical direction; the second rotating groove is then designed to be larger than the first rotating groove; the design is ingenious and consideration is given.

Preferably, the rear end of the base is provided with a connecting part, the rotating connecting shaft horizontally penetrates through the connecting part, and the rotating section is positioned at the outer side of the connecting part; the front end of the movable mounting seat is correspondingly provided with a rotary avoidance groove for accommodating the connecting part, and connecting lugs formed on the left side and the right side of the rotary avoidance groove; the inner side wall of the connecting lug is provided with a connecting circular groove; the engagement portion is located in the rotation avoidance groove, and the rotation section is configured to be in rotation fit in the connection circular groove. The base and the movable mounting seat are tightly connected together front and back, and the integrity is good.

Preferably, the connecting lugs are detachably connected with the rotating sections, vertical shaft milling planes are respectively arranged at the front end and the rear end of each rotating section, and the upper end and the lower end of each rotating section correspondingly form a rotating cambered surface; the inner side wall of the connecting lug is also provided with a limiting channel which is communicated with the connecting circular groove and is arranged along the front-back direction, and the opening of the limiting channel is positioned at the front end of the connecting lug; and the height of the notch of the limiting channel is matched with the front-back distance between two adjacent shaft milling planes on the rotating section. Then, when in installation, the rotating segment cannot enter the limiting channel along the front-back direction; firstly, the movable mounting seat is vertically placed so that the opening of the limiting channel is vertically downward, then the rotating section can enter the connecting circular groove through the limiting channel, and after the rotating section enters the connecting circular groove, the rotating cambered surface is in rotating fit with the connecting circular groove, and then the movable mounting seat can be rotated backwards to be on the basis of the same horizontal plane with the base; in this position, the rotating segment cannot enter the limiting channel again, so that the rotating segment can be limited to be separated from the connecting circular groove; and in the process of tilting the seat, the rotation angle of the rotation mounting seat is necessarily smaller than 90 degrees, and the structure can be ensured to be stable after connection.

Preferably, the rotary joint shaft is rigid. The rotary connecting shaft can be made of metal materials, has good hardness and high strength, and improves durability.

Preferably, a locking device is arranged between the base and the movable mounting seat; the locking device comprises a horizontal inserting tongue movably arranged on the fixed seat, at least one slot correspondingly arranged on the front end surface of the movable mounting seat, and a stay wire control mechanism capable of controlling the front and back extension of the inserting tongue, wherein the stay wire control mechanism is arranged in the base; the inserting tongue is inserted into the inserting groove so that the movable mounting seat and the base are relatively fixed. Then the tilting locking and unlocking, and the swinging locking and unlocking of the seat can be controlled by controlling the inserting tongue to be inserted into or withdrawn from the inserting groove.

Preferably, a space is arranged between the two sides of the fixed seat and the outer side wall of the base, and a transverse groove arranged along the front-back direction is arranged at the space; reset spring pieces arranged along the front-back direction are respectively arranged in the transverse grooves at the two sides, the front ends of the reset spring pieces are connected with the base, and the rear ends of the reset spring pieces are tilted relative to the base and are positioned at the bottom of the rotary connecting shaft; the rotary connecting shaft rotates downwards to squeeze and act on the reset spring piece. The two sides of the base are further provided with reset elastic force positioned below the rotary connecting shaft; then under the action of the reset elastic piece, the reset elastic piece on the corresponding side can be extruded when the rotary connecting shaft swings left and right; the swing process of the seat assembly and the chair back assembly has good damping sense all the time, and the use is comfortable; and the reset spring piece can provide the reset spring force of the rotating connecting shaft after deformation, so that the chair back component and the chair seat component can be reset by oneself after a user leaves the chair.

Preferably, the reset elastic piece is a spring steel plate arranged along the front-back direction, an inserting bayonet is further arranged below the front of the base positioned in the transverse groove, and the front end of the reset elastic piece is obliquely downwards inserted into the inserting bayonet; the front end of the transverse groove is provided with an abutting part, and the bottom surface of the reset spring piece abuts against the abutting part so that the rear end of the reset spring piece is tilted. The width of the base is effective, so that a strip-shaped reset elastic sheet is arranged; through this mounting structure of shell fragment resets for reset shell fragment rear end perk makes reset shell fragment rear end can take place elastic deformation in vertical direction, then can respond the rotation action of rotation connecting axle and take place elastic deformation.

Preferably, the elastic support body is simultaneously deformed to bend in the lateral direction and the front-rear direction when the tilting movement of the seatback assembly and the rocking of the seat assembly occur simultaneously. The elastic support body can be elastically deformed in the left-right direction and the front-back direction at the same time, so that the movement form of the seat is more similar to full dynamics.

The design starting point, the idea and the beneficial effects of the invention adopting the technical scheme are as follows:

1, the movable mounting seat at the bottom of the chair back component is connected with the rear end of the base through a rotary connecting shaft, the rotary connecting shaft comprises a swinging section capable of swinging left and right relative to the base and a rotary section penetrating the base and rotationally connected to the movable mounting seat; so that the movable mounting seat can rotate back and forth and swing left and right relative to the base; the rear end of the seat assembly is connected to the movable mounting seat, so that the seat assembly synchronously moves along with the seat back assembly; therefore, the chair back component and the chair seat component of the chair can correspondingly tilt and rotate and swing left and right in matching with the dynamic sitting posture change of a user, and the chair is flexible and comfortable to use.

2, An elastic support body is arranged between the front end of the seat assembly and the base, and the elastic support body is configured to be capable of responding to the movement of the seat assembly and correspondingly generating elastic deformation and providing reset elastic force; the elastic support body adopts a spring steel plate, has high structural strength and can provide enough reset elastic force; then, in the tilting movement process of the seat, the chair back component and the chair seat component move forwards and backwards along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly bends and deforms along the front and back direction; when the seat swings, the seat back component and the seat base component swing left and right along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly generates elastic torsional deformation along the left and right directions; and the seat has good damping effect all the time in the using process. In addition, a reset spring piece which can elastically act on the rotary connecting shaft is also arranged in the base; so that the chair back component and the chair seat component have good damping sense in the moving process.

Then when the user uses the chair of the invention, there are three usage states: (1) The chair back component is not in a backward leaning state, at the moment, a user sits on the chair in a normal sitting posture and does not lean against the chair back component, and the chair seat component can swing left and right according to the dynamic sitting posture of the user. (2) The chair back component is in a leaning state, at the moment, a user only leans backwards to rest on the chair back component, and the chair back component and the chair seat component do not swing. (3) The user leans on the chair back component and keeps moving in the left-right direction (such as sideways talking, fetching objects and the like) at the moment in synchronous leaning and swinging states, and then the chair back component and the chair seat component can lean on or swing left and right at the same time, so that the full-dynamic movement mode of the chair is realized.

3, A fixing seat is arranged in the connecting part, and a rotary connecting shaft is arranged in the fixing seat in a left-right penetrating way; the positioning support shaft is arranged in the fixing seat in a penetrating way along the front-back direction by penetrating the rear end of the connecting part; the bottom of the middle position of the rotary connecting shaft is correspondingly provided with a rotary groove which can be in rotary fit with the positioning support shaft; so that the positioning support shaft is inserted into the rotating groove; the rotary connecting shaft can rotate left and right around the positioning support shaft by taking the positioning support shaft as a fulcrum; the positioning support shaft is embedded in the rotating groove and can also limit the left-right offset of the rotating connecting shaft, so that the rotating connecting shaft is stable in rotation; the design is ingenious. The positioning support shaft is in interference fit with the connecting part, so that the connection is convenient; the positioning support shaft also adopts a knurling shaft, so that the surface of the positioning support shaft is rough, the friction force between the positioning support shaft and the fixed seat is larger, and the interference fit effect is better; in addition, when the rotary connecting shaft rotates around the positioning support shaft, a certain rotation damping exists.

4, An elastic L-shaped elastic connecting rod with elasticity is arranged between the seat side rod and the back side rod, so that the seat back has good integration; when the chair back component and the chair seat component are in backward tilting movement, the elastic connecting rod can also generate corresponding elastic deformation, so that the tilting angle of the chair back component is larger, and then the back tilting angle is larger; the chair back component and the chair seat component have a splayed movement trend, so that the chair is more comfortable to use.

5, A locking device is further arranged between the base and the movable mounting seat, so that the movement locking and unlocking of the chair back component and the chair seat component can be controlled according to the requirements of users; the design is ingenious, and the chair back component and the chair seat component can be simultaneously subjected to tilting locking and swinging locking only by inserting the inserting tongue into the inserting groove; the operation is very convenient.

Drawings

FIG. 1 is a side view of the seat of the present invention in an embodiment;

FIG. 2 is a schematic perspective view of the seat according to the embodiment of the present invention;

FIG. 3 is a schematic top view of a three-dimensional structure of the seat according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a movable mounting seat coupled to a seatback assembly and a seat assembly in accordance with an embodiment of the present invention;

FIG. 5 is an exploded view of the base mated with the movable mount and the rotatable connection shaft in an embodiment of the present invention;

FIG. 6 is a schematic perspective view of the connection between the rotary connecting shaft and the base and the movable mounting base after the rotary connecting shaft is matched with the base in the embodiment of the invention;

FIG. 7 is a schematic perspective view of the base and the rotating connecting shaft in an embodiment of the present invention;

FIG. 8 is a schematic view of a perspective structure of a movable mounting seat rotating left and right relative to a base in an embodiment of the present invention;

FIG. 9 is a side cross-sectional view of a rotary connection shaft mated with a reset spring in an embodiment of the present invention;

FIG. 10 is a schematic perspective view of the positioning support shaft and base connection in an embodiment of the present invention;

FIG. 11 is a schematic perspective view showing the cooperation of the positioning fulcrum and the rotary connecting shaft in the embodiment of the invention;

FIG. 12 is a side cross-sectional view of the positioning fulcrum mated with the rotatable connection shaft in an embodiment of the invention;

FIG. 13 is a side cross-sectional view of another angle of engagement of the positioning fulcrum with the rotatable connection shaft in an embodiment of the invention;

FIG. 14 is a schematic perspective view of a locking device according to an embodiment of the present invention;

Fig. 15 is a schematic perspective view of the connection of the elastic support body to the seat assembly and the base according to the embodiment of the present invention.

The reference numerals are as follows: a base 1; a movable mounting seat 2; a support part 2a; a chair pole 3; a seat assembly 4; a seat side lever 4a; a seatback assembly 5; a back support 5a; a back side lever 5b; rotating the connecting shaft 6; a rocking segment 6a; rotating segment 6b; a joint 7; an outer side wall 7a; a fixing seat 8; a first rotating groove 9; an elastic link 10; an elastic support body 11; positioning the support shaft 12; the rotating groove 13; a perforation 14; a second rotating groove 15; a transverse slot 16; a reset spring 17; a bayonet 18; an abutment portion 19; a clamping column 20; the rotation avoidance groove 21; a connecting lug 22; a decorative cover plate 23; an axis milling plane 24; a connecting circular groove 25; a limit channel 26; a rotating arc surface 27; a rotating shaft seat 28; rotating the sleeve 29; a tongue 30; a slot 31; a pull wire control mechanism 32.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment relates to reference orientations of the respective parts, with the position of the seatback assembly as the rear end.

The specific embodiments of the present invention are as follows:

As shown in fig. 1-15, the present invention provides a full-motion seat that includes a base 1, a seatback assembly 5 coupled to a rear end of the base 1, and a seat assembly 4 coupled above the base 1. The base 1 is configured to be connected to a seat post 3 of the seat bottom; a movable mounting seat 2 is arranged at the bottom of the chair back assembly 5, and the movable mounting seat 2 is connected and matched with the base 1 through a rotary connecting shaft 6; the rotary connecting shaft 6 comprises a swinging section 6a horizontally penetrating into the base 1 and a rotary section 6b penetrating through two sides of the base 1 and connected with the movable mounting seat 2; the swinging section 6a can swing left and right by taking the middle position of the base 1 as a fulcrum; the rotating section 6b is in rotating fit with the movable mounting seat 2, so that the movable mounting seat 2 can rotate back and forth relative to the base 1 around the rotating connecting shaft 6; thus, the movable mounting seat 2 can swing left and right relative to the base 1 and can also rotate back and forth relative to the base, so that the movable chair back assembly 5 can swing left and right and tilt back and forth. Furthermore, the movable mounting seat 2 further comprises a bearing part 2a extending outwards towards two sides, and two sides of the rear end of the seat assembly 4 are respectively connected to the bearing part 2a, so that the seat assembly 4 moves synchronously along with the seat back assembly 6; an elastic supporting body 11 is arranged between the front end of the seat assembly 4 and the base 1, and the elastic supporting body 11 is configured to be capable of corresponding elastic deformation in response to the movement of the seat assembly 4 and provide reset elastic force; then, when the seat tilts, the chair back component 5 and the seat component 4 move forward and backward along with the movable mounting seat 2 relative to the base 1, and the elastic supporting body 11 correspondingly bends and deforms along the forward and backward direction; when the seat swings, the seat back component 5 and the seat base component 4 swing left and right along with the movable mounting seat 2 relative to the base 1, and the elastic supporting body 11 correspondingly generates elastic torsional deformation along the left and right direction; therefore, the chair back component 5 and the chair seat component 4 of the chair can correspondingly tilt and rotate and swing left and right according to the dynamic sitting posture change of a user, and the chair is flexible and comfortable to use; the deformation of the elastic support body 11 can also provide elastic force for resetting the seat assembly 4 and the back assembly 5, and the seat has good damping effect in the use process.

The specific method is as follows: as shown in fig. 3-8, the backrest assembly 5 and the seat assembly 4 are both in a frame structure, and the backrest assembly 5 includes a back side lever 5b respectively located at two vertical sides, and a back bracket 5a connected between the back side lever 5b and the movable mounting seat 2, wherein the back bracket 5a stabilizes the structure of the backrest assembly 5. The seat assembly 4 comprises seat side rods 4a respectively positioned at two sides, and the seat assembly 4a at any side is connected with the bearing part 2a at the corresponding side, so that the movable mounting seat 2 can stably support the seat assembly 4a, and then the seat back assembly 5 and the seat assembly 4 can form linkage through the movable mounting seat 2. As shown in fig. 3 and 4: a downwardly extending "L" shaped elastic link 10 is also provided at the bottom of the back lever 5b, the elastic link 10 being configured for connection to the rear end of the seat lever 4 a; thereby the chair back component 5 and the chair seat component 4 are integrated, and the integrity is good; so that the two can simultaneously perform tilting movement and the waist is prevented from being separated from the chair back assembly 5 when the user leans backwards. In addition, the elastic connecting rod 10 has elasticity, and when the chair back component 5 and the chair seat component 4 synchronously tilt, the elastic connecting rod 10 correspondingly deforms, so that the tilting angle of the chair back component 5 is larger, and then the back tilt angle is larger; so that the chair back assembly 5 and the chair seat assembly 4 have a movement trend of opening, and the user can use the chair more comfortably. Otherwise, the back assembly 5 and seat assembly 4 will maintain the same tilt angle, making the seat stiff and uncomfortable for the user to use during recline.

As shown in fig. 2-8 and 15, two ends of the elastic supporting body 11 are respectively connected with the front end of the seat assembly 4 and the front end of the base 1; the elastic support body 11 is made of a spring steel sheet, so that the elastic support body 11 can be elastically deformed in a torsion manner in the left-right direction and can be bent back and forth; and the spring steel sheet is adopted, so that the strength is high and durable, sufficient reset elastic force can be provided, and the connection strength between the seat assembly 4 and the base 1 is ensured. Further, from the back to the front, the elastic supporting body 11 is inclined obliquely upward; the lower end of the elastic support body 11 is connected with the base 1, and the upper end of the elastic support body 11 is hinged with the seat assembly 4; the method specifically comprises the following steps: as shown in fig. 15, the lower end of the elastic support 11 is horizontally inserted into the front end of the base 1, and the elastic support 11 is fixedly connected with the base 1 by a screw; the upper end of the elastic support body 11 is also provided with a rotating shaft seat 28 through screw connection, and the front end of the seat assembly 4 is correspondingly provided with two rotating shaft sleeves 29 which are spaced left and right; the rotating shaft seat 28 is rotatably connected in two shaft sleeves 29; therefore, when the seat assembly 4 moves, the joint of the seat assembly 4 and the spring support 11 can be adjusted in a self-adaptive rotation mode, the joint is not easy to break, and the structural stability is improved. In addition, by adopting the connecting structure, the seat assembly 4 is in a picking state relative to the base 1, and the structure is simple and attractive, so that the seat assembly 4 is lighter and more flexible when being stressed to move relative to the base 1.

As shown in fig. 5-13, the hollow structure of the base 1 is formed with a receiving space, a narrow-shaped connecting part 7 is arranged at the rear end of the base 1, a fixing seat 8 is arranged at the middle position of the connecting part 7, and a first rotating groove 9 penetrating left and right is arranged in the fixing seat 8; the height of the first rotating groove 9 in the vertical direction is larger than the diameter of the rotating connecting shaft 6, and the swinging section 6a is penetrated in the first rotating groove 9; and be equipped with between rocking section 6a and the fixing base 8 and make the rotation connecting axle 6 can rotate relative fixing base 8 side-to-side's rotation structure, specifically: as shown in fig. 10 to 13, the rotating structure includes a positioning support shaft 12 provided in the fixing base 8 in the front-rear direction, the positioning support shaft 12 being located at the intermediate position of the fixing base 8; a through hole 14 is arranged at the rear end of the fixed seat 8, and the positioning support shaft 12 is penetrated in the fixed seat 8 through the through hole 14. After the positioning support shaft 12 is penetrated in the fixed seat 8, the positioning support shaft 12 is positioned at the lower end of the first rotating groove 9; correspondingly, a rotating groove 13 which can be in rotating fit with the positioning support shaft 12 is correspondingly arranged at the bottom of the swinging segment 6 a. During installation, the rotary connecting shaft 6 is arranged in the fixed seat 8 in a penetrating way left and right in advance and is positioned at the middle position of the fixed seat 8; then the positioning support shaft 12 is penetrated in the fixed seat 8 along the front-back direction, and the positioning support shaft 12 is just embedded in the rotating groove 13 and matched with the rotating connecting shaft 6, so that the positioning installation function can be realized. The positioning support shaft 12 is a knurled shaft, and after the positioning support shaft 12 is arranged on the fixing seat 8 in a penetrating way, the positioning support shaft 12 is in interference fit with the fixing seat 8, so that the connection is convenient and simple; the positioning support shaft 12 adopts a knurling shaft, so that the surface of the positioning support shaft 12 is rough, and the contact friction force between the positioning support shaft 12 and the fixed seat 8 is large, thereby effectively limiting the positioning support shaft 12 from being separated from the fixed seat 8; when the rotation connecting shaft 6 is rotated about the positioning support shaft 12, a certain rotation damping is provided. As shown in fig. 11 to 13, after the positioning support shaft 12 is engaged with the rocking section 6a, the rotation connecting shaft 6 can be rotated left and right about the positioning support shaft 12 with the positioning support shaft 12 as a "fulcrum". The positioning support shaft 12 is embedded in the rotating groove 13, so that the positioning support shaft 12 can also limit the left-right offset of the rotating connecting shaft 6, and the rotating connecting shaft 6 can only swing left and right; the positioning support shaft 12 can achieve multiple effects, and the structural design is ingenious. And when the seat is used, the user applies downward acting force to the rotary connecting shaft 6, so that the rotary groove 13 at the bottom of the rotary connecting shaft 6 cannot be separated from the positioning support shaft 12, and the rotary connecting shaft 6 swings more stably. And the rotary connecting shaft 6 is made of rigid metal, so that the rigidity is good, the strength is high, and the durability is improved.

As shown in fig. 5-9, the outer side walls 7a at two sides of the connection portion 7 are correspondingly provided with second rotating grooves 15 through which the avoidance rotating connection shaft 6 passes, and the height of the second rotating grooves 15 in the vertical direction is greater than that of the first rotating grooves 9. The rotating connecting shaft 6 takes the central position of the fixed seat 8 as a rotating point, and then the farther away from the fixed seat 8, the larger the swinging distance of the rotating connecting shaft 6 in the vertical direction; the second rotary groove 15 is then designed to be larger than the first rotary groove 9; the design is ingenious and consideration is given. Further, the method comprises the following steps: the two sides of the fixed seat 8 are respectively provided with a space with the outer side wall 7a of the connecting part 7, and a transverse groove 16 arranged along the front-back direction is arranged at the space between the fixed seat 8 and the outer side wall 7a of the connecting part; the transverse grooves 16 on the two sides are respectively provided with a strip-shaped reset spring piece 17 arranged along the front-back direction, the front end of the reset spring piece 17 is connected with the base 1, and the rear end of the reset spring piece 17 is tilted relative to the base 1 and is positioned at the bottom of the rotary connecting shaft 6; so that when the rotary connecting shaft 6 rotates downwards, the extrusion is acted on the reset spring piece 17; specifically: as shown in fig. 7 and 9, a bayonet 18 is also arranged at the front lower part of the base 1 positioned at the transverse slot 16; the front end of the reset spring 17 is obliquely downwards inserted into the inserting bayonet 18, the upper wall surface of the inserting bayonet 18 is provided with a vertically downwards extending clamping column 20, the clamping column 20 is clamped on the reset spring 17, and the reset spring 17 is prevented from being separated from the inserting bayonet 18. The front end of the transverse groove 16 is provided with an abutting part 19, the bottom surface of the reset spring piece 17 abuts against the abutting part 19, so that the rear end of the reset spring piece 17 is in a tilting state, the reset spring piece 17 is positioned at the bottom of the rotary connecting shaft 6, and therefore when the rotary connecting shaft 6 rotates left and right, the reset spring piece 17 at the corresponding side is extruded to generate elastic deformation, so that the swing process of the seat assembly 4 and the chair back assembly 5 always has good damping sense, and the use is comfortable; and the reset spring piece 17 can provide the reset spring force of the rotary connecting shaft 6 after deformation, so that the seat assembly 4 and the back assembly 5 can be reset by the user after the user leaves the seat. Moreover, because the fixing seat 8 is just spaced from the outer side wall 7a of the connecting portion 7, a transverse groove for installing the reset spring 17 can be formed, the internal structure of the base 1 is fully utilized, and the layout is reasonable. In addition, still connect and be equipped with a decoration apron 23 in the upper end of base 1, rotate connecting axle 6 and movable mounting seat 2 installation and accomplish the back, decorate apron 23 and connect in base 1 upper end, can cover base 1 inner structure, hide the connection trace, beautify the outward appearance.

As shown in fig. 5-8, a rotation avoidance groove 21 for accommodating the engagement portion 7 is correspondingly formed at the front end of the movable mounting seat 2, and connection lugs 22 for connecting the rotation connection shaft 6 are respectively formed at two sides of the rotation avoidance groove 21; the movable mounting seat 2 is detachably connected with the rotary connecting shaft 6, and specifically means that: as shown in fig. 6, the rotating segments 6b respectively protrude at two sides of the connecting portion 7, vertical shaft milling planes 24 are respectively provided at front and rear ends of each rotating segment 6b, and then upper and lower ends of the rotating segments 6b respectively form a rotating cambered surface 27; the inner side wall of the connecting lug 22 is provided with a connecting circular groove 25 which can be in rotary fit with the rotary connecting shaft 6, and a limiting groove 26 which is communicated with the connecting circular groove 25 and is arranged along the front-back direction, and an opening of the limiting groove 26 is formed at the front end of the connecting lug 22. And the height of the notch of the limiting channel 26 is matched with the front-back distance between two adjacent shaft milling planes 24 on the rotating section 6b, and the height of the notch of the limiting channel 26 is smaller than the diameter of the rotating connecting shaft 6. So that, when mounted, the rotating segment 6b cannot enter the limiting channel 26 in the front-rear direction; firstly, the movable mounting seat 2 is vertically placed so that the opening of the limiting channel 26 faces downwards vertically, then the rotating section 6b can enter the connecting circular groove 25 through the limiting channel 26, and after the rotating section 6b enters the connecting circular groove 25, the rotating cambered surface 27 is in rotating fit with the connecting circular groove 25, so that the movable mounting seat 2 can be rotated backwards to be on the same horizontal plane with the base 1; in this position, the rotary connecting shaft 6 cannot enter the limiting groove 26 again, so that the rotary connecting shaft 6 can be limited to be separated from the connecting circular groove 25; in the tilting process of the seat, the rotation angle of the rotation mounting seat 2 is necessarily smaller than 90 degrees, and the structure can be ensured to be stable after connection. Adopt above-mentioned connection structure for connection structure between movable mounting seat 2 and the rotation connecting axle 6 is simple ingenious, can realize quick assembly disassembly. Furthermore, the connecting part 7 is in a narrowed state relative to the base 1, and the width of the front end of the movable mounting seat 2 is matched with the width of the base 1; after the connecting part 7 is embedded in the rotation avoidance groove 21, the base 1 and the movable mounting seat 2 are tightly connected front and back, and the width is consistent; so that the integrity is better. And after the assembly is completed, a certain interval is formed between the two sides of the connecting part 7 and the connecting lug 22, so that the movable mounting seat 2 has a certain movable space and can swing relative to the connecting part 7.

As shown in fig. 14, a locking device is further provided between the base 1 and the movable mounting seat 2, and the locking device includes a horizontal insertion tongue 30 movably arranged on the fixed seat, a slot 31 correspondingly arranged on the front end surface of the movable mounting seat 2, and a pull wire control mechanism 32 capable of controlling the insertion tongue 30 to stretch back and forth; the stay wire control mechanism 32 is arranged in the base 1; the insertion tongue 30 can be controlled to be inserted into or withdrawn from the slot 31 by controlling the stay wire control mechanism 32, so that the movement locking and unlocking of the chair back assembly 5 and the chair seat assembly 4 can be controlled; in the unlocking state, the tongue 30 is moved out of the slot 31, and the back assembly 5 and the seat assembly 4 can tilt forward and backward and swing left and right. If the movement locking is needed, only the control tongue 30 is inserted into the slot 31, and the movable mounting seat 2 is relatively fixed with the base 1, so that the movement of the chair back assembly 5 and the chair seat assembly 4 can be limited; simple structure for user operation is convenient, and the function is abundanter. The stay wire control mechanism 32 is a stay wire combination structure that is commonly used in a seat control mechanism, and how to control the movement of the insert tongue 30 is not a design gist of the present invention, so a detailed description is omitted.

In summary, according to the full-dynamic seat disclosed by the invention, the movable mounting seat 2 at the bottom of the seat back assembly 5 is connected with the rear end of the base 1 through the rotary connecting shaft 6, the rotary connecting shaft 6 comprises the swinging section 6a capable of swinging left and right relative to the base 1, and the rotary section 6b penetrating through two sides of the base 1 and connected with the movable mounting seat 2, and the rotary section 6b is in rotary fit with the movable mounting seat 2; so that the movable mounting seat 2 can swing left and right and rotate back and forth relative to the base 1; and the rear end of the seat assembly 4 is connected to the movable mounting seat 2, so that the chair back assembly 5 and the seat assembly 4 keep linkage. Furthermore, an elastic support body 1 is arranged between the front end of the seat assembly 4 and the base 1, and the elastic support body 1 adopts a spring steel plate and can be bent and deformed back and forth and twisted left and right; when the tilting motion of the back assembly 5 and the left-right rocking motion of the seat assembly 4 synchronously occur, the elastic support body 1 will simultaneously undergo bending deformation in the left-right direction and the front-rear direction. Therefore, when a user uses the seat, the seat assembly 4 and the seat back assembly 5 can correspondingly perform forward and backward tilting movement and left and right swinging according to the dynamic sitting posture change of the user, so that the seat has better flexibility and is more comfortable to use. The elastic supporting body 11 and the reset spring piece 17 in the base 1 act; the seat assembly 4 and the chair back assembly 5 have good damping sense in the movement process, and are comfortable to use; and elastic support body 11 and reset shell fragment 17 can also provide the elasticity that resets after deformation for seat support subassembly 4 and back of the chair subassembly 5 can reset by oneself, use more humanizedly.

Claims

1. A fully dynamic seat, comprising:

The base is used for connecting and supporting the chair back component and the chair seat component of the chair; the chair back component is connected to the rear end of the base, the chair seat component is connected above the base, and the chair seat component is in a picking state relative to the base;

The rotary connecting shaft is arranged between the base and the chair back component; the bottom of the chair back component is provided with a movable mounting seat; the rotary connecting shaft comprises a swinging section horizontally penetrating through the base and rotary sections penetrating through two sides of the base and connected with the movable mounting seat; the swinging section can swing left and right by taking the middle position of the base as a fulcrum; the rotating section is in rotating fit with the movable mounting seat, so that the movable mounting seat can rotate back and forth relative to the base around the rotating connecting shaft;

The elastic support body is arranged between the front end of the seat assembly and the base; the elastic supporting body is inclined forwards and upwards from back to front; the lower end of the elastic support body is fixedly connected with the base, and the upper end of the elastic support body is hinged with the seat assembly, so that the joint of the seat assembly and the spring support body can be self-adaptively rotated and adjusted; the elastic support body is configured to be capable of undergoing corresponding elastic deformation in response to movement of the seat assembly and to provide a return elastic force; the movable mounting seat also comprises a bearing part which extends outwards towards two sides, and the rear end of the seat assembly is connected to the bearing part;

In the tilting process, the chair back component and the chair seat component move forward and backward along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly bends and deforms along the forward and backward directions; in the swinging process, the chair back component and the chair seat component swing left and right along with the movable mounting seat relative to the base, and the elastic supporting body correspondingly generates elastic torsional deformation along the left and right direction; when the tilting movement of the chair back component and the left-right swinging of the chair seat component synchronously occur, the elastic supporting body simultaneously bends and deforms in the left-right direction and the front-back direction.

2. The full-motion seat of claim 1, wherein: the elastic support body is made of a spring steel sheet.

3. The full-motion seat of claim 1, wherein: the seat assembly is of a frame structure and comprises seat side rods respectively positioned at two sides, and the rear ends of the seat side rods are connected to the bearing parts; the chair back assembly is of a frame structure and comprises back side rods which are respectively positioned vertically at two sides; an elastic L-shaped elastic connecting rod with elasticity is arranged between the seat side rod and the back side rod; when the chair back component moves backwards, the elastic connecting rod deforms and generates reset elastic force.

4. The full-motion seat of claim 1, wherein: the base is hollow and is provided with an accommodating space; a fixed seat is arranged at the rear end of the accommodating space, and the swinging segment is penetrated in the fixed seat along the left-right direction; a rotating structure is arranged between the fixed seat and the swinging section; the rotating structure comprises a positioning support shaft penetrating through the fixing seat along the front-back direction, the positioning support shaft is positioned at the middle position of the fixing seat, and the positioning support shaft is positioned at the lower end of the swinging section; a rotating groove which can be in rotating fit with the positioning support shaft is arranged at a corresponding position at the bottom of the swinging section; the positioning support shaft is embedded and rotationally matched in the rotating groove, so that the swinging section can rotate left and right in the fixing seat around the positioning support shaft.

5. The full-motion seat of claim 4, wherein: the rear end of the base is provided with a through hole, the rotary connecting shaft is arranged in the fixed seat in a penetrating way in advance, and the positioning support shaft is arranged in the fixed seat in a penetrating way and is embedded in the rotary groove; and the positioning support shaft is in interference fit with the fixing seat.

6. The full-motion seat of claim 4, wherein: a first rotating groove penetrating left and right is formed in the fixing seat, and the swinging segment is arranged in the first rotating groove in a penetrating mode; the height of the first rotating groove in the vertical direction is larger than the diameter of the rotating connecting shaft; and the outer side walls on two sides of the base are correspondingly provided with second rotating grooves which are penetrated by the avoidance rotating connecting shafts, and the height of the second rotating grooves in the vertical direction is larger than that of the first rotating grooves.

7. The full-motion seat of claim 1, wherein: the rear end of the base is provided with a connecting part, the rotating connecting shaft horizontally penetrates through the connecting part, and the rotating section is positioned at the outer side of the connecting part; the front end of the movable mounting seat is correspondingly provided with a rotary avoidance groove for accommodating the connecting part, and connecting lugs formed on the left side and the right side of the rotary avoidance groove; the inner side wall of the connecting lug is provided with a connecting circular groove; the engagement portion is located in the rotation avoidance groove, and the rotation section is configured to be in rotation fit in the connection circular groove.

8. The full-motion seat of claim 7, wherein: the connecting lugs are detachably connected with the rotating sections, vertical shaft milling planes are respectively arranged at the front end and the rear end of each rotating section, and the upper end and the lower end of each rotating section correspondingly form a rotating cambered surface; the inner side wall of the connecting lug is also provided with a limiting channel which is communicated with the connecting circular groove and is arranged along the front-back direction, and the opening of the limiting channel is positioned at the front end of the connecting lug; and the height of the notch of the limiting channel is matched with the front-back distance between two adjacent shaft milling planes on the rotating section.

9. The full-motion seat of claim 1, wherein: the rotational connection shaft is rigid.

10. The full-motion seat of claim 4, wherein: a locking device is arranged between the base and the movable mounting seat; the locking device comprises a horizontal inserting tongue movably arranged on the fixed seat, at least one slot correspondingly arranged on the front end surface of the movable mounting seat, and a stay wire control mechanism capable of controlling the front and back extension of the inserting tongue, wherein the stay wire control mechanism is arranged in the base; the inserting tongue is inserted into the inserting groove so that the movable mounting seat and the base are relatively fixed.

11. The full-motion seat of claim 4, wherein: the two sides of the fixed seat are respectively provided with a space with the outer side wall of the base, and transverse grooves arranged along the front-back direction are arranged at the space; reset spring pieces arranged along the front-back direction are respectively arranged in the transverse grooves at the two sides, the front ends of the reset spring pieces are connected with the base, and the rear ends of the reset spring pieces are tilted relative to the base and are positioned at the bottom of the rotary connecting shaft; the rotary connecting shaft rotates downwards to squeeze and act on the reset spring piece.

12. The full-motion seat of claim 11, wherein: the reset spring piece is a spring steel plate arranged along the front-back direction, an inserting bayonet is further arranged below the front of the base positioned in the transverse groove, and the front end of the reset spring piece is obliquely inserted into the inserting bayonet downwards; the front end of the transverse groove is provided with an abutting part, and the bottom surface of the reset spring piece abuts against the abutting part so that the rear end of the reset spring piece is tilted.