CN214317526U

CN214317526U - Double-backrest chair

Info

Publication number: CN214317526U
Application number: CN202120326387.5U
Authority: CN
Inventors: 徐杰
Original assignee: Ningbo Ouge Ergonomics Co ltd
Current assignee: Ningbo Ouge Ergonomics Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-10-01
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a double backrest chair, including seat subassembly and back of the chair subassembly, the seat subassembly includes the seat panel and fixes the first bracing piece as the panel bottom, and the back of the chair subassembly includes the second bracing piece and sets up two back of the chair panels on the second bracing piece, is fixed with the head rod between two first bracing pieces, still includes the first connecting piece of being connected with first support piece is adjustable, has seted up first mounting hole on the first connecting piece, and second bracing piece tip seted up with first mounting hole complex first mating holes, the utility model discloses simple structure because the setting of first connecting piece for second support piece's front and back position can be adjusted, in order to adapt to more users' size. The utility model discloses two back of the chair panels that set up, when the user leaned on backward, because the connector is made for elastic material, can make it have certain angle and rotate to be suitable for multiple user's size, the human curve of more laminating is used comfortablely.

Description

Double-backrest chair

Technical Field

The utility model relates to the field of furniture, concretely relates to double backrest chair.

Background

The desk and chair in the existing teaching articles are generally fixed, because the growth processes of children of the same age are different, the height or habit of the children can change the requirements of the children on the chair, and the structure of the chair needs to be adjusted in different age groups, so that the requirements of ergonomics are met, and the physical and mental health growth of the children is facilitated; and the existing backrest is fixedly connected, and the comfort of a user is not increased, so that the double-backrest chair which is suitable for various heights and body types and can increase the comfort of the user is very important.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a double-backrest chair, which comprises a seat component and a chair back component, wherein the seat component comprises a seat panel and a first supporting rod fixed at the bottom of the seat panel; the seat support is characterized by further comprising a first connecting piece in adjustable connection with the first supporting piece, a first mounting hole is formed in the first connecting piece, a first matching hole matched with the first mounting hole is formed in the end portion of the second supporting rod, the second supporting rod and the first connecting piece are in adjustable connection through the first mounting hole and the first matching hole, an extending piece is fixed to the end portion of the second supporting rod, the first matching hole is formed in the extending piece, and the extending piece is inserted between the seat panel and the first connecting piece to be fixed.

Through above-mentioned technical scheme, because the setting of first connecting piece for the fore-and-aft position of second support piece can be adjusted, in order to adapt to more users' size.

The fixed cover is equipped with first connecting seat on the second bracing piece, first slot has been seted up on the first connecting seat, back of the chair panel back is fixed with the second connecting seat, the second slot has been seted up on the second connecting seat, still includes the connector, the both ends of connector insert respectively on first slot and the second slot fixed, the connector is elastic material and makes.

Through the technical scheme, the utility model discloses two back of the chair panels that set up, when the user leaned on backward, because the connector makes for elastic material, can make it have certain angle and rotate to be suitable for multiple user's size, the human curve of more laminating is used comfortablely.

Still include the lift chair foot, set up the second mounting hole that a plurality of linearity were arranged on the first bracing piece, the first end of lift chair foot is fixed with the second connecting piece, set up on the second connecting piece with second mounting hole complex second mating holes, the two is through the adjustable connection of second mounting hole complex second mating holes. The first connecting piece is fixedly connected with the first ends of the lifting chair legs, the first connecting piece is provided with a buckling hole, the second connecting piece is integrally formed with a buckling piece matched with the buckling hole, and the first connecting piece and the second connecting piece are buckled and connected.

Through above-mentioned technical scheme, because lift chair foot and first bracing piece are adjustable from beginning to end, can adjust according to the length of user's shank, increase and use comfortable degree.

The lift chair foot includes outer tube and inner tube, the first end of inner tube is fixed on the second connecting piece, and the second end of inner tube is inserted and is located in the outer tube, the outer intraductal guide structure that is fixed with, the second end of inner tube is fixed with the slide that can go up and down on guide structure, guide structure including set up the track on guide structure and with the draw-in groove of track intercommunication, draw-in groove and track intercommunication and slant under establish, the contained angle between draw-in groove and the track is the acute angle, the axle connection has the locating part in the slide, be fixed with on the locating part with the spacing post of draw-in groove complex, still be provided with in the slide and make the locating part have the elastic component that gets into the trend of motion in the draw-in groove.

The slide includes first sliding seat and second sliding seat, offer the storage tank that is used for the locating part to place on the first sliding seat for first sliding seat and second sliding seat are located the locating part both sides respectively, are fixed with the pivot on the locating part, all offer the pivot groove that is used for the pivot to place on first sliding seat and the second sliding seat, all offer the first spacing groove that is used for spacing post to place on first sliding seat and the second sliding seat, the first end of pivot and spacing post is located first sliding seat, and the second end of pivot and spacing post all passes guide structure and is located the second sliding seat.

The first limiting groove is communicated with a second limiting groove which is used for limiting the rotation of the limiting part and clamping the limiting column, and a slide way for the guide structure to pass through is arranged at the joint of the first sliding seat and the second sliding seat; the accommodating groove comprises a third limiting groove used for limiting the rotation angle of the limiting part around the rotating shaft, and the groove wall of the third limiting groove serves as a limiting wall of the limiting part.

When going up and down, the slide reciprocates on guide structure, and in the rebound, spacing post of locating part supports on the orbital inner wall between two draw-in grooves, and the elastic component makes the locating part have the trend of being close to the draw-in groove internal motion, and when the slide rises a definite position, spacing post gets into the draw-in groove under the drive of elastic component, can't slide down, has realized the spacing effect in expansion back of lift chair foot this moment. When the slide moved up until guide structure's top, spacing post extruded the locating part rotation between the hook portion that two draw-in grooves formed, because guide structure's top is not hook portion, at this moment, the locating part continues to revolve the rotation of axes, and spacing post continues to slide in first spacing inslot, gets into the second spacing inslot until first spacing inslot joint for the locating part can slide smoothly and realize descending.

It is worth mentioning that, still be fixed with the stopper in guide structure's bottom, the slide is when the stopper moves second stopper department in the decline process, and the terminal surface that spacing post can extrude the second stopper makes the stopper that originally is in certain inclination break away from the joint with the second spacing groove at the extrusion in-process, and the stopper resets under the effect of elastic component, prepares for promoting next time.

The first sliding seat is fixedly provided with a mounting column, the limiting column is fixed at the first end of the limiting part, the second end of the limiting part is provided with a through hole, the first end of the elastic part is fixed on the mounting column, and the second end of the elastic part is fixed on the through hole.

And the second connecting rod is U-shaped, and two ends of the second connecting rod are respectively fixed on the outer walls of the two outer pipes.

And the first ends of the lifting chair legs are fixed on the second connecting piece, and the second ends of the lifting chair legs are fixed on the third supporting rod. Both ends of the third support rod are sleeved with foot pads.

Compared with the prior art, the utility model has the advantages of: the utility model discloses simple structure because the setting of first connecting piece for second support piece's front and back position can be adjusted, in order to adapt to more users' size. The utility model discloses two back of the chair panels that set up, when the user leaned on backward, because the connector is made for elastic material, can make it have certain angle and rotate to be suitable for multiple user's size, the human curve of more laminating is used comfortablely.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at B;

FIG. 5 is a schematic view of a guide structure and a slider structure;

FIG. 6 is a schematic view of the guide structure and the slider;

FIG. 7 is a front view of the first slide block;

FIG. 8 is a front view of the second slide block;

fig. 9 is a schematic cross-sectional view of the first connecting seat, the connecting body and the second connecting seat of the present invention;

fig. 10 is a perspective view of the first connecting base of the present invention;

FIG. 11 is a perspective view of the connector of the present invention;

fig. 12 is a perspective view of the second connecting seat of the present invention;

reference numerals: 1-a seat panel; 2-a first support bar; 3-a second support bar; 4-a seatback panel; 5-a first connecting rod; 6-placing a groove; 7-a first connector; 8-a first mounting hole; 9-a first mating hole; 10-an extension piece; 11-a first connection seat; 12-a first slot; 13-a second connecting seat; 14-a second slot; 15-a linker; 16-a second mounting hole; 17-a second connector; 18-a second mating hole; 19-a snap hole; 20-a clamping sheet;

21-an outer tube; 22 an inner tube; 23 a guide structure; a 24 slide carriage; 25 card slots; 26 a limiting member; 27 a limiting column; 28 an elastic member; 29 a first sliding seat; 30 a second sliding seat; 31 an accommodating groove; 32 rotating shafts; 33 a rotating shaft groove; 34 a first limit groove; 35 a second limiting groove; 36 a slide way; 37 a third limiting groove; 38 a retaining wall; 39 a limiting block; 40 mounting the column; 41 perforating;

42 a second connecting rod; 43 a third support bar; 44 foot pad.

Detailed Description

In order to better understand the invention for those skilled in the art and to define the claimed scope more clearly, the invention will be described in detail below with respect to certain specific embodiments of the invention. It should be noted that the following description is only a few examples of the present invention, and the specific and direct descriptions of the related structures are only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of the present invention.

Referring to the drawings, the utility model adopts the following technical scheme that the double-backrest chair comprises a seat component and a chair back component, wherein the seat component comprises a seat panel and a first supporting rod fixed at the bottom of the seat panel, the chair back component comprises a second supporting rod and two chair back panels arranged on the second supporting rod, a first connecting rod is fixed between the two first supporting rods, a placing groove is arranged at the bottom of the seat panel, and the first supporting rod is fixed in the placing groove; the seat support is characterized by further comprising a first connecting piece in adjustable connection with the first supporting piece, a first mounting hole is formed in the first connecting piece, a first matching hole matched with the first mounting hole is formed in the end portion of the second supporting rod, the second supporting rod and the first connecting piece are in adjustable connection through the first mounting hole and the first matching hole, an extending piece is fixed to the end portion of the second supporting rod, the first matching hole is formed in the extending piece, and the extending piece is inserted between the seat panel and the first connecting piece to be fixed.

Due to the arrangement of the first connecting piece, the front and back positions of the second supporting piece can be adjusted to adapt to the body sizes of more users.

The utility model discloses two back of the chair panels that set up, when the user leaned on backward, because the connector is made for elastic material, can make it have certain angle and rotate to be suitable for multiple user's size, the human curve of more laminating is used comfortablely.

Because the lifting chair leg and the first supporting rod can be adjusted front and back, the lifting chair leg and the first supporting rod can be adjusted according to the length of the leg of a user, and the use comfort degree is increased.

The lift chair foot includes outer tube and inner tube, the first end of inner tube is fixed on the second connecting piece, and the second end of inner tube is inserted and is located in the outer tube, the outer intraductal guide structure that is fixed with, the second end of inner tube is fixed with the slide that can go up and down on guide structure, guide structure including set up the track on guide structure and with the draw-in groove of track intercommunication, draw-in groove and track intercommunication and slant under establish, the contained angle between draw-in groove and the track is the acute angle, the axle connection has the locating part in the slide, be fixed with on the locating part with the spacing post of draw-in groove complex, still be provided with in the slide and make the locating part have the elastic component that gets into the trend of motion in the draw-in groove. The bottom end of the inner pipe is fixed with the sliding seat.

As shown in fig. 7 and 8, the left side of fig. 7 is a first sliding seat where the limiting member is placed, and the right side is a schematic view of the first sliding seat where the limiting member is not placed; fig. 8 shows the first sliding seat with the limiting element on the left side and the second sliding seat without the limiting element on the right side.

It is worth mentioning that in order to make the sliding more smooth, the first sliding seat and the second sliding seat are both provided with groove bodies for the movement of the limiting column, the rotating shaft and the like; the first sliding seat is provided with a groove body, the second sliding seat is not provided with the groove body, the working process can be achieved, and the sliding effect is slightly poor.

Still include the second connecting rod, the second connecting rod is the U type, and the both ends of second connecting rod are fixed respectively on the outer wall of two outer tubes.

The first ends of the lifting chair legs are fixed on the second connecting piece, and the second ends of the lifting chair legs are fixed on the third supporting rod. Both ends of the third support rod are sleeved with foot pads.

The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. A double back rest chair characterized in that: including seat subassembly and back of the chair subassembly, the seat subassembly includes seat panel (1) and fixes first bracing piece (2) as the panel bottom, the back of the chair subassembly includes second bracing piece (3) and two back of the chair panels (4) of setting on second bracing piece (3), still includes first connecting piece (7) with the adjustable connection of first bracing piece, first mounting hole (8) have been seted up on first connecting piece (7), second bracing piece (3) tip seted up with first mounting hole (8) complex first mating holes (9), second bracing piece (3) and first connecting piece (7) are through first mounting hole (8) and first mating holes (9) adjustable connection.

2. A double back rest chair according to claim 1, wherein: fixed cover is equipped with first connecting seat (11) on second bracing piece (3), first slot (12) have been seted up on first connecting seat (11), back of the chair panel (4) back is fixed with second connecting seat (13), second slot (14) have been seted up on second connecting seat (13), still include connector (15), the both ends of connector (15) are inserted respectively and are fixed on first slot (12) and second slot (14).

3. A double back rest chair according to claim 1, wherein: still include the lift chair foot, a plurality of second mounting holes (16) of arranging linearly have been seted up on first bracing piece (2), the first end of lift chair foot is fixed with second connecting piece (17), set up on second connecting piece (17) with second mounting hole (16) complex second mating holes (18), the two is through second mounting hole (16) complex second mating holes (18) adjustable connection.

4. A double back rest chair according to claim 3, wherein: the lifting chair leg comprises an outer tube (21) and an inner tube (22), the first end of the inner tube (22) is fixed on the second connecting piece (17), the second end of the inner tube (22) is inserted in the outer tube (21), a guide structure (23) is fixed in the outer tube (21), a sliding seat (24) which can be lifted on the guide structure (23) is fixed at the second end of the inner tube (22), the guide structure (23) comprises a track arranged on the guide structure (23) and a clamping groove (25) communicated with the track, the clamping groove (25) is communicated with the rail and obliquely downwards arranged, an included angle between the clamping groove (25) and the rail is an acute angle, a limiting piece (26) is connected with the inner shaft of the sliding seat (24), a limiting column (27) matched with the clamping groove (25) is fixed on the limiting piece (26), an elastic part (28) which enables the limiting part (26) to have a movement tendency to enter the clamping groove (25) is further arranged in the sliding seat (24).

5. A double back rest chair according to claim 4, wherein: the slide (24) comprises a first slide seat (29) and a second slide seat (30), the first sliding seat (29) is provided with a containing groove (31) for placing the limiting piece (26), so that the first sliding seat (29) and the second sliding seat (30) are respectively positioned at two sides of the limiting piece (26), a rotating shaft (32) is fixed on the limiting piece (26), rotating shaft grooves (33) for placing the rotating shaft (32) are respectively arranged on the first sliding seat (29) and the second sliding seat (30), the first sliding seat (29) and the second sliding seat (30) are both provided with a first limiting groove (34) for placing a limiting column (27), the first ends of the rotating shaft (32) and the limiting column (27) are positioned on the first sliding seat (29), and the second ends of the rotating shaft (32) and the limiting column (27) penetrate through the guide structure (23) and are positioned on the second sliding seat (30).

6. A double back rest chair according to claim 5, wherein: the first limiting groove (34) is communicated with a second limiting groove (35) which is used for limiting the limiting piece (26) to rotate and clamping the limiting column (27), and a slide way (36) for the guide structure (23) to pass through is formed at the joint of the first sliding seat (29) and the second sliding seat (30); the accommodating groove (31) comprises a third limiting groove (37) used for limiting the rotation angle of the limiting piece (26) around the rotating shaft (32), and the groove wall of the third limiting groove (37) is used as a limiting wall (38) of the limiting piece (26).

7. A double back rest chair according to claim 5, wherein: the mounting column (40) is fixed on the first sliding seat (29), the limiting column (27) is fixed at the first end of the limiting part (26), a through hole (41) is formed in the second end of the limiting part (26), the first end of the elastic part (28) is fixed on the mounting column (40), and the second end of the elastic part (28) is fixed on the through hole (41).

8. A double back rest chair according to claim 3, wherein: the outer pipe is characterized by further comprising a second connecting rod (42), wherein the second connecting rod (42) is U-shaped, and two ends of the second connecting rod (42) are respectively fixed on the outer walls of the two outer pipes (21).

9. A double back rest chair according to claim 3 or 4, wherein: the lifting chair is characterized by further comprising a third supporting rod (43), wherein the first end of each lifting chair foot is fixed on the second connecting piece (17), and the second end of each lifting chair foot is fixed on the third supporting rod (43).

10. A double back rest chair according to claim 9, wherein: both ends of the third supporting rod (43) are sleeved with foot pad sleeves (44).