CN114027658B

CN114027658B - Engineering chair

Info

Publication number: CN114027658B
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: 2024-06-07
Anticipated expiration: 2041-12-03
Also published as: CN114027658A

Abstract

The invention relates to the technical field of seats and discloses an ergonomic chair which comprises a back frame, a bottom frame and a cushion, wherein the front end of the bottom frame extends forwards and is reversely folded from top to bottom to form at least two bearing parts, the rear end of the bottom frame is provided with a supporting end for installing 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 matching and accommodating two ends of the supporting block, the side rods are connected with the end parts of the bearing parts, and the cushion is installed on the bearing parts. Compared with the prior art, the backrest of the ergonomic chair can be self-adapted to the human body to recline correspondingly, and simultaneously keeps the support on the back of the human body, so that the ergonomic chair is good in comfort, firm in structure and durable.

Description

Engineering chair

Technical Field

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

Background

The current ergonomic chair mostly comprises cushion, back and base, and 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 on the ergonomic chair, and the back needs to adjust its elevation angle when bearing people's back in order to reach best comfort level, and current ergonomic chair back is all fixed with hard connection through the junction with the cushion, adjusts the contained angle that the junction just needs to be adjusted to the elevation angle, and different users because the physical condition is different, and same ergonomic chair needs different back to adjust just can provide the comfort level better, and the operation is inconvenient and use experience is not good enough.

Disclosure of Invention

The purpose of the invention is that: provides an ergonomic chair with a backrest which can adapt to different human bodies and provides good comfort

In order to solve the technical problems, the invention provides an ergonomic chair.

The utility model provides an ergonomic chair, includes back frame, chassis and cushion, the front end of chassis extends forward and turns over from last reverse to turn over and have two at least bearing portions, the rear end of chassis is provided with and is used for installing the support end of back frame, the lower extreme of back frame is provided with mobile jib and two at least side bars, the mobile jib with the support end is articulated, just the mobile jib with still be provided with the supporting shoe between the support end, the support end with the mobile jib all is provided with the matching holds the slot at the both ends of supporting shoe, the side bar with the end connection of bearing portion, the cushion is installed on the bearing portion.

As a preferable scheme of the invention, the bottom side of the supporting end is provided with the eye-splice, the middle part of the eye-splice is hinged with the supporting end, and one end of the eye-splice, which faces the main rod, extends to form a convex block which can be abutted between the main rod and the supporting end.

As a preferable mode of the invention, the lower side of the main rod is provided with a concave part which is matched with the convex block of the eye-splice near the end part.

As a preferable mode of the invention, the end part of the bearing part is provided with a connecting recess matched with and connected with the end part of the side rod.

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

As a preferred embodiment of the present invention, the coupling recess passes through and couples the end portions of the side bars and the bottom side of the seat cushion by bolts or screws.

As a preferred embodiment of the invention, the seat cushion is connected to the support part by a backing plate, and the support part is symmetrically fixed to the backing 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 stretches into the guide groove is arranged on the bottom side of the cushion, and a clamping piece which can be movably clamped with the clamping block is arranged on the underframe.

As a preferable scheme of the invention, 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.

As a preferable 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 ergonomic chair provided by the embodiment of the invention has the beneficial effects that: the backrest can be self-adaptive to the human body to correspondingly lean backwards, and meanwhile, the backrest keeps supporting the back of the human body, is good in comfort, firm in structure and durable.

Drawings

FIG. 1 is a side view of an assembled structure of 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 a schematic view of the embodiment of FIG. 1 in an exploded partial top view of the present invention;

FIG. 4 is a schematic view of an exploded partial bottom angle of the embodiment of FIG. 1 in accordance with the present invention.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "mounted," "connected," and "connected" are to be construed broadly in this application, and may be either fixedly connected, detachably connected, or integrally connected, for example, unless otherwise explicitly stated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present invention, it should be further understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the machine or element in question 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 comprises a back frame 1, a bottom frame 2 and a seat cushion 3, wherein the front end of the bottom frame 2 extends forward and is reversely folded with at least two bearing parts 22 from the top, the rear end of the bottom frame 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 part of the main rod 11 is hinged with the supporting end 21, a supporting block 23 is further arranged between the main rod 11 and the supporting end 21, the opposite end parts of the supporting end 21 and the main rod 11 are respectively provided with slots for matching and accommodating the two ends of the supporting block 23, the two half parts of the supporting block 23 are respectively inserted in the slots of the supporting end 21 and the main rod 11 in a matching manner, the side rods 12 are connected with the end parts of the bearing parts 22, the cushion 3 is installed on the bearing part 22, the back frame 1 is the same as the existing ergonomic chair, the front side of the back frame 1 is used for arranging a back cushion or a back plate for people to lean back, when people sit on the ergonomic chair, the back leans against the back cushion on the back frame 1, the back frame 1 naturally leans backwards or rotates backwards around the hinge joint of the main rod 11 and the supporting end 21 under the stress, after the back leans backwards for 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 backwards, meanwhile, the side rod 12 connected with the bearing part 22 is naturally pulled forwards under the action of the gravity of the human body under the cushion 3, so that the back cushion is supported by the back cushion, the structure of the bottom frame 2 and the back frame 1 can lead the back frame 1 or the back cushion to sit on the cushion 3 on different human bodies, a certain leaning backwards and forward support is naturally correspondingly generated, manual adjustment is not needed for adaptation is very convenient, and very good comfort is provided, and the joint of the underframe 2 and the lifting air pressure rod is far away from the bearing part 22, so that the damage to the cushion caused by the damage of the lifting air pressure rod can be avoided, and the human body is protected.

Referring to fig. 2-4, an exemplary embodiment of the present invention is that, a buckle 24 is disposed at the bottom side of the support end 21, the middle of the buckle 24 is hinged to the support end 21, a protrusion that can be abutted between the main rod 11 and the support end 21 extends toward one end of the main rod 11, by driving the buckle 24 back to one end of the main rod 11 in a reverse direction, whether the protrusion of the buckle 24 extends into the space between the main rod 11 and the support end 21 to make abutment, thereby jacking up the gap distance between the main rod 11 and the support end 21 and the hinged part, reducing the angle of the back support 1, and otherwise, the protrusion can be separated, thereby increasing the angle of the back support 1, further providing a larger adjustable range of the back support, increasing the adjustable range of the comfort, and the buckle 24 can be operated by various structures such as a guy cable, a deflector rod, etc.

Referring to fig. 3, the underside of the main lever 11 is provided with a recess 111 near the end portion, which mates with the projection of the eye-splice 24, and the projection of the eye-splice 24 can move outward and abut against the recess 111 when it leaves between the main lever 11 and the support end 21, thereby positioning the outward-moving projection and accordingly allowing it to be more easily returned between the main lever 11 and the support end 21 by operation.

Referring to fig. 2-4, illustratively, the end of the supporting portion 22 is provided with a connecting recess 221 for matching connection with the end of the side rod 12, the connecting recess 221 is provided with a screw hole boss for aligning connection with the stepped connecting hole of the side rod 12, and the supporting portion can be aligned and positioned quickly before being connected by bolts or screws, thereby facilitating assembly and connection.

Referring to fig. 3 and 4, illustratively, the connecting recess 221 is provided with a locking protrusion 222, and the bottom side of the end portion of the side lever 12 is provided with a locking groove 121 to which the locking protrusion 222 is connected, so that when the end portion of the side lever 12 is fastened to the connecting recess 221, the two parts are fastened to each other, and are not loosened or displaced back and forth.

Referring to fig. 1 to 4, the coupling recess 221 is exemplarily formed by passing and coupling the end portions of the side bars 12 and the bottom side of the seat cushion 3 through bolts or screws, so that the side bars 12 are clamped between the seat cushion 3 and the coupling recess 221 to be very firm.

Referring to fig. 2-4, for example, the cushion 3 is connected to the supporting portion 22 through a pad 31, and the supporting 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 meanwhile, the pad 31 applies a force to the supporting portion 22 so as to be correspondingly downward at the same time, thereby avoiding unilateral inclination.

Referring to fig. 3 and 4, exemplary, the cushion 3 is slidably connected with the cushion plate 31, a guide groove 311 is disposed on one side of the cushion plate 31 facing the cushion 3, a clamping block 32 extending into the guide groove 311 in a matching manner is disposed on the bottom side of the cushion 3, a clamping piece 33 capable of being movably clamped with the clamping block is mounted on the chassis 2, and the clamping piece 33 can be slidably and positionally adjusted and clamped with the clamping block 32 through a tooth shape, a bolt shape and other structures, so that the front and rear positions of the cushion 3 can be conveniently adjusted on an ergonomic chair.

Referring to fig. 3 and 4, for example, the pad 31 is further provided with a spring groove 312 and a return spring 313 disposed in the spring groove 312, one end of the return spring 313 is connected to the spring groove 312, and the bottom side of the seat cushion 3 is provided with a protrusion 34 connected to the other end of the return spring 313, so that the corresponding return force can be given to the pad 31 during sliding adjustment by the return spring 313, and the pad can be quickly reset.

Referring to fig. 1-4, the underframe 2 and the back frame 1 are made of plastic, and the supporting block 23 is made of plastic, so that the overall structure of the ergonomic chair is not only very light, but also has good stress stability, low cost and durability.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims

1. An ergonomic chair, characterized by: including back frame, chassis and cushion, the front end of chassis extends forward and turns over from last reverse two at least bearing portions that turn over, the rear end of chassis is provided with and is used for installing the support end of back frame, the lower extreme of back frame is provided with mobile jib and two at least side bars, the mobile jib with the support end articulates, just the mobile jib with still be provided with the supporting shoe between the support end, the support end with the mobile jib all is provided with the matching and holds the slot at the both ends of supporting shoe, the both ends of supporting shoe are pegged graft respectively in the support end with in the slot of mobile jib, the side bar with the end connection of bearing portion, the cushion is installed on the bearing portion, when the people sits on this ergonomic chair, the back leaned on to back pad on the back frame, the back frame atress is naturally around the articulated department of mobile jib and support end back of leaning on or back is changeed backward, after the back of certain position, the supporting shoe just leaned up with the support end with the back, prevents that the back frame from continuing back, the gravity is pegged graft in the slot of supporting shoe with the support end, simultaneously the bearing portion is connected is in the effect is received under the back pad by the human body and is pulled forward naturally.

2. An ergonomic chair according to claim 1, characterized in that: the bottom side of supporting end sets up the eye-splice, the middle part of eye-splice with the supporting end is articulated, the eye-splice orientation the one end of mobile jib extends has can support to the mobile jib with lug between the supporting end.

3. An ergonomic chair according to claim 2, characterized in that: 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 eye-splice.

4. An ergonomic chair according to claim 1, characterized in that: the end part of the bearing part is provided with a connecting recess matched and connected with the end part of the side rod.

5. An ergonomic chair according to claim 4, wherein: the connecting recess is provided with a clamping lug, and the bottom side of the end part of the side rod is provided with a clamping groove connected with the clamping lug.

6. An ergonomic chair according to claim 4, wherein: the connecting recess passes through and connects the end of the side rod and the bottom side of the cushion by bolts or screws.

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

8. An ergonomic chair according to 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 chassis can with fixture block activity joint's screens piece.

9. An ergonomic chair according to claim 8, wherein: the cushion is characterized in that a spring groove and a return spring positioned in the spring groove are further arranged on the cushion plate, one end of the return spring is connected with the spring groove, and a convex column connected with the other end of the return spring is arranged at the bottom side of the cushion.

10. An ergonomic chair according to any of claims 1-9, characterized in that: the underframe and the back frame are made of plastic, and the supporting block is made of plastic.