CN114027658A

CN114027658A - Ergonomic chair

Info

Publication number: CN114027658A
Application number: CN202111462169.5A
Authority: CN
Inventors: 阿德伊亚诺·巴尔当齐; 亚力桑德罗·诺维力
Original assignee: Heshan Mingsenda Sifang Furniture Co ltd
Current assignee: Heshan Mingsenda Sifang Furniture Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-02-11
Anticipated expiration: 2041-12-03

Abstract

The invention relates to the technical field of seats and discloses an engineering chair which comprises a back frame, an underframe and a cushion, wherein the front end of the underframe extends forwards and is reversely turned over from the top to form at least two bearing parts, the rear end of the underframe is provided with a supporting end for mounting the back frame, the lower end of the back frame is provided with a main rod and at least two side rods, the main rod is hinged with the supporting end, a supporting block is further arranged between the main rod and the supporting end, the supporting end and the main rod are respectively provided with a slot for accommodating the two ends of the supporting block in a matching manner, the side rods are connected with the end parts of the bearing parts, and the cushion is mounted on the bearing parts. Compared with the prior art, the ergonomic chair has the advantages that the backrest can be adaptive to the human body to correspondingly tilt backwards, the back of the human body is supported, the comfort is good, the structure is firm, and the ergonomic chair is durable.

Description

Ergonomic chair

Technical Field

The invention relates to the technical field of seats, in particular to an engineering chair.

Background

Present engineering chair is mostly by the cushion, back and base are constituteed, the cushion is installed on the base, and the bottom side or the rear end of back and cushion are connected, when the people sits engineering chair on, the back need adjust its angle of elevation in order to reach best comfort level when the bearing people backs, present engineering chair back all is fixed with the rigid connection realization through the junction with the cushion, adjust the angle of elevation just will adjust the contained angle of junction, different users are not uniform because of the health condition, just can provide the comfort level betterly with the back regulation of same engineering chair needs the difference, the operation is inconvenient and use experience is not good enough.

Disclosure of Invention

The purpose of the invention is: provides an ergonomic chair with a backrest capable of adapting to different human bodies and providing good comfort

In order to solve the technical problem, the invention provides an engineering chair.

The utility model provides an engineering chair, includes frame, chassis and cushion of the back of the body, the front end of chassis extends forward and turns over from last reversal and has two at least bearing portions, the rear end of chassis is provided with and is used for the installation the support end of frame of the back of the body, the lower extreme of frame of the back of the body is provided with mobile jib and two at least side levers, the mobile jib with it is articulated to support the end, just the mobile jib with it still is provided with the supporting shoe to support between the end, support the end with the mobile jib all is provided with the matching and holds the slot at the both ends of supporting shoe, the side lever with the end connection of bearing portion, the cushion is installed on the bearing portion.

As a preferable scheme of the present invention, an insert buckle is disposed at a bottom side of the support end, a middle portion of the insert buckle is hinged to the support end, and a protrusion which can abut against between the main rod and the support end extends from one end of the insert buckle facing the main rod.

As a preferable aspect of the present invention, a concave portion matching the projection of the insert buckle is provided at a lower side of the main lever near an end portion.

In a preferred embodiment of the present invention, the end of the support part is provided with a connection recess for matching and connecting the end of the side bar.

As a preferable scheme of the invention, the connecting recess is provided with a clamping convex block, and the bottom side of the end part of the side lever is provided with a clamping groove connected with the clamping convex block.

As a preferable mode of the present invention, the coupling recess is formed by passing a bolt or a screw through and coupling the end of the side bar and the bottom side of the seat cushion.

In a preferred embodiment of the present invention, the seat cushion is connected to the support portion by a cushion plate, and the support portion is symmetrically fixed to the cushion plate from the lower side by bolts or screws.

As a preferable scheme of the invention, the cushion is in sliding connection with the base plate, a guide groove is formed in one side, facing the cushion, of the base plate, a clamping block which is matched and extends into the guide groove is arranged at the bottom side of the cushion, and a clamping piece which can be movably clamped with the clamping block is arranged on the base plate.

As a preferable scheme of the present invention, the cushion plate is further provided with a spring groove and a return spring located in the spring groove, one end of the return spring is connected with the spring groove, and the bottom side of the cushion is provided with a convex column connected with the other end of the return spring.

As the preferred scheme of the invention, the underframe and the back frame are made of plastic, and the supporting block is made of plastic.

Compared with the prior art, the engineering chair provided by the embodiment of the invention has the beneficial effects that: the backrest can be adaptive to the human body to correspondingly tilt backwards, meanwhile, the back of the human body is kept supported, the comfort is good, and the backrest is firm in structure and durable.

Drawings

FIG. 1 is a side view of an assembled structure according to one embodiment of the present invention;

FIG. 2 is an exploded view of the embodiment of FIG. 1 of the present invention;

FIG. 3 is an exploded partial top view of the embodiment of FIG. 1 in accordance with the present invention;

FIG. 4 is a partially exploded bottom view of the embodiment of FIG. 1.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, either fixedly connected, detachably connected, or integrally connected, unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it is to be further understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the machine or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, an ergonomic chair according to an embodiment of the present invention includes a back frame 1, an underframe 2, and a seat cushion 3, wherein the front end of the underframe 2 extends forward and is reversely folded from above to form at least two supporting portions 22, the rear end of the underframe 2 is provided with a supporting end 21 for mounting the back frame 1, the lower end of the back frame 1 is provided with a main rod 11 and at least two side rods 12 which are bent forward, the end of the main rod 11 is hinged to the supporting end 21, a supporting block 23 is further provided between the main rod 11 and the supporting end 21, the opposite ends of the supporting end 21 and the main rod 11 are respectively provided with slots for accommodating two ends of the supporting block 23, two halves of the supporting block 23 are respectively inserted into the slots of the supporting end 21 and the main rod 11 in a matching manner, the side rods 12 are connected to the ends of the supporting portions 22, the seat cushion 3 is mounted on the supporting portions 22, the back frame 1 is the same as the prior art engineering chair, the front side of the back frame 1 is used for arranging a back cushion or a back plate for a person to lean against, when the person sits on the engineering chair and the back leans against the back cushion on the back frame 1, the back frame 1 is naturally stressed to lean backwards or rotate backwards around the hinged part of the main rod 11 and the supporting end 21, after the back is leaned against a certain position, the supporting block 23 tightly pushes the main rod 11 and the supporting end 21 to prevent the back frame 1 from continuously leaning against, meanwhile, the side rod 12 connected with the supporting part 22 is naturally pulled forwards under the action of the gravity of the human body on the cushion 3 so as to support the back cushion and bear the back of the human body, the structure of the underframe 2 and the back frame 1 can ensure that the back frame 1 or the back cushion is seated on the cushion 3 by different human bodies to naturally and correspondingly generate certain backward leaning against and forward support without manual adjustment, thereby being very convenient and providing very good comfort, and the joint of the underframe 2 and the lifting rod is far away from the supporting part 22, can avoid the damage of the lifting air pressure rod to directly damage the cushion, thereby protecting the human body.

Referring to fig. 2-4, exemplarily, the bottom side of the supporting end 21 is provided with an inserting buckle 24, the middle of the inserting buckle 24 is hinged to the supporting end 21, the inserting buckle 24 extends towards one end of the main rod 11 and can abut against a convex block between the main rod 11 and the supporting end 21, and the inserting buckle 24 is driven reversely to face away from one end of the main rod 11, so that whether the convex block of the inserting buckle 24 extends between the main rod 11 and the supporting end 21 to abut against each other or not can be achieved, thereby jacking up the lower side gap distance between the main rod 11 and the supporting end 21 and the hinged part, reducing the backward tilting angle of the back frame 1, otherwise, increasing the backward tilting angle of the back frame 1, further providing a larger back cushion backward tilting adjustable range, increasing the comfort adjustable range, and the inserting buckle 24 can be operated by various structures such as a guy cable and a driving lever.

Referring to fig. 3, the underside of the main rod 11 is exemplarily provided with a recess 111 near the end portion to match the projection of the insert 24, and the projection of the insert 24 moves outward and abuts against the recess 111 when it leaves between the main rod 11 and the support end 21, thereby positioning the moved-outward projection and accordingly allowing it to be more easily manipulated back between the main rod 11 and the support end 21.

Referring to fig. 2-4, illustratively, the end of the supporting part 22 is provided with a connecting recess 221 matching with the end of the side bar 12, the connecting recess 221 is provided with a screw boss aligned with the stepped connecting hole of the side bar 12, and the positioning and positioning can be performed quickly before the connection through the bolt or screw, which is more convenient for assembly and connection.

Referring to fig. 3 and 4, for example, the connecting recess 221 is provided with a locking protrusion 222, and the bottom side of the end of the side bar 12 is provided with a locking groove 121 connected by the locking protrusion 222, so that when the end of the side bar 12 is fastened in the connecting recess 221, the two are fastened to each other and cannot be loosened back and forth or displaced.

Referring to fig. 1 to 4, illustratively, the coupling recesses 221 are penetrated and coupled by bolts or screws between the ends of the side bars 12 and the bottom side of the seat cushion 3, so that the side bars 12 are sandwiched between the seat cushion 3 and the coupling recesses 221, and are very firmly fixed.

Referring to fig. 2-4, illustratively, the cushion 3 is connected to the support portion 22 through a pad 31, and the support portion 22 is symmetrically fixed to the pad 31 from the lower side through bolts or screws, so that the cushion 3 is supported by the pad 31 in a large area, and the pad 31 applies a force to the support portion 22 so that it can be correspondingly downward at the same time, avoiding a single side inclination.

Referring to fig. 3 and 4, exemplarily, the cushion 3 with backing plate 31 sliding connection, backing plate 31 orientation one side of cushion 3 is provided with guide way 311, the bottom side of cushion 3 is provided with the matching and stretches into the fixture block 32 of guide way 311, install on the backing plate 31 can with the screens 33 of fixture block activity joint, screens 33 accessible profile of tooth, bolt type form isotructure with fixture block 32 carries out the slip positioning joint to the convenient people sits and can adjust the front and back position of cushion 3 on the engineering chair.

Referring to fig. 3 and 4, for example, a spring groove 312 and a return spring 313 located in the spring groove 312 are further provided on the backing plate 31, one end of the return spring 313 is connected with the spring groove 312, and a convex column 34 connected with the other end of the return spring 313 is provided on the bottom side of the seat cushion 3, so that the backing plate 31 can be given a corresponding return force during sliding adjustment by the return spring 313, and can be quickly returned.

Referring to fig. 1-4, the base frame 2 and the back frame 1 are made of plastic, and the supporting blocks 23 are made of plastic, so that the integral structure of the engineering chair is light, has good stress stability, is low in cost and is durable.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An ergonomic chair, comprising: including back of the body frame, chassis and cushion, the front end of chassis extends forward and turns over from the last reverse book and have two at least bearing portions, the rear end of chassis is provided with and is used for the installation the support end of back of the body frame, the lower extreme of back of the body frame is provided with mobile jib and two at least side levers, the mobile jib with it is articulated to support the end, just the mobile jib with it still is provided with the supporting shoe to support between the end, support the end with the mobile jib all is provided with the matching and holds the slot at the both ends of supporting shoe, the side lever with the end connection of bearing portion, the cushion is installed on the bearing portion.

2. An ergonomic chair as claimed in claim 1, wherein: the bottom side of the supporting end is provided with an insert buckle, the middle of the insert buckle is hinged with the supporting end, and a convex block which can be abutted between the main rod and the supporting end extends towards one end of the main rod.

3. An ergonomic chair as claimed in claim 2, wherein: the lower side of the main rod is provided with a concave part which is close to the end part and matched with the convex block of the insert buckle.

4. An ergonomic chair as claimed in claim 1, wherein: and the end part of the supporting part is provided with a connecting concave seat matched with the end part of the side rod.

5. An ergonomic chair as claimed in claim 4, wherein: the connecting concave seat is provided with a clamping convex block, and the bottom side of the end part of the side lever is provided with a clamping groove connected with the clamping convex block.

6. An ergonomic chair as claimed in claim 4, wherein: the connecting recesses are penetrated by bolts or screws and connect the ends of the side bars and the bottom side of the seat cushion.

7. An ergonomic chair as claimed in claim 1, wherein: the cushion is connected with the bearing part through a backing plate, and the bearing part is symmetrically fixed with the backing plate through bolts or screws from the lower side.

8. An ergonomic chair as claimed in claim 7, wherein: the cushion with backing plate sliding connection, the backing plate orientation one side of cushion is provided with the guide way, the bottom side of cushion is provided with the matching and stretches into the fixture block of guide way, install on the backing plate can with the screens piece of fixture block activity joint.

9. An ergonomic chair as claimed in claim 8, wherein: the cushion is characterized in that the cushion plate is also provided with a spring groove and a return spring positioned in the spring groove, one end of the return spring is connected with the spring groove, and the bottom side of the cushion is provided with a convex column connected with the other end of the return spring.

10. An ergonomic chair as claimed in any of claims 1 to 9, wherein: the bottom frame and the back frame are made of plastics, and the supporting block is made of plastic.