Folding office chair convenient for afternoon nap

Abstract

The utility model relates to the technical field of folding chairs, and discloses a folding office chair convenient for afternoon nap, which comprises a seat surface module (10), a backrest module (20) capable of turning over relative to the seat surface module (10) and an armrest module (30) for supporting the seat surface module (10), and is characterized in that the seat surface module (10) is connected with the backrest module (20) through a seat surface adapter (5); a backrest cross rod (23) opposite to the seat surface module (10) is arranged on the backrest module (20); the folding office chair can be used for sitting, lying and folding, the waist fitting degree is better in the lying posture state, and the problem that the waist is suspended when a user lies flat to use the folding office chair is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chairs, in particular to a folding office chair convenient for taking a nap. Background Art

[0002] The existing office chairs have the following problems: (1) In order to ensure the comfort of the seat, a sponge cushion is usually provided on the seat. However, there is an obvious height difference at the connection between the sponge cushion and the backrest in the frame structure of the office chair when the backrest lies flat at an angle greater than 140 degrees, resulting in a suspended position in the waist area, such as an office chair disclosed in the prior application CN208550556U. At the same time, the folding of the product also needs to be considered, that is, the backrest tube and the top of the sponge cushion need to be close to horizontal in the folded state to reduce the volume in the folded state and facilitate packaging and transportation.

[0003] (2) The existing office chairs have metal external teeth or metal internal teeth, with the front and rear legs arranged in a staggered manner, and the combined adapter is a sheet metal bending adapter. Therefore, the collision noise between metals is relatively large during use, and the angles of each gear are not considered, resulting in different feelings for each gear when adjusting the gear.

[0004] (3) The telescopic leg rest module telescopic rod of the existing office chair is integrally bent. Considering the limitation of the bending length, the telescopic limit length of the leg rest is relatively short, so the applicable human height is limited. The existing solution is immovable. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a folding office chair convenient for taking a nap. The folding office chair can be sat on, reclined and folded. In the reclined state, the waist fit is better, solving the problem of the waist being suspended when the user lies flat.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A folding office chair convenient for taking a nap, including a seat surface module, a backrest module that flips relative to the seat surface module, and an armrest module that supports the seat surface module. The seat surface module and the backrest module are connected through a seat surface adapter. A backrest crossbar opposite to the seat surface module is provided on the backrest module to support the user's waist when the chair lies flat.

[0008] Preferably, the seat surface module includes seat surface side rods and a seat cushion mounted on the seat surface side rods. The backrest module includes a backrest tube and a backrest adapter connected to the backrest tube. The backrest tube is connected to the seat surface side rods through a seat surface adapter. The seat surface adapter includes a plugging portion connected to the seat surface side rods and a rotating portion connected to the plugging portion. The rotating portion is rotatably connected to the backrest adapter. A backrest crossbar is provided between two sets of backrest adapters. When the chair lies flat, the backrest crossbar is located below the backrest tube, reducing the suspension of the user's waist while the backrest crossbar does not press against the waist.

[0009] Preferably, the rotating portion extends along the height direction of the seat cushion, and when the chair lies flat, the backrest tube is approximately horizontal with the top surface of the seat cushion, reducing the suspension of the waist; and when the chair is folded, the backrest tube is approximately horizontal with the top surface of the seat cushion, and the backrest crossbar is located above the backrest tube, reducing the floor area occupied by the chair after folding.

[0010] Preferably, the height of the rotating portion is equal to the height of the seat cushion. At least two seat surface crossbars are provided between two sets of seat surface side rods for fixedly supporting the seat cushion. The seat cushion is a sponge seat cushion, and its front end is provided with an arc to fit the bottom of the human knee.

[0011] Preferably, vertical tube holes for plugging and installing the backrest tube and crossbar holes for plugging and installing the backrest crossbar are respectively provided on two sets of the backrest adapters for quickly installing the backrest tube and the backrest crossbar; the backrest tube includes two backrest main tubes plugged into the vertical tube holes and an arc tube. The arc tube bends towards the top of the seat cushion to form a pillow area convenient for the user's headrest; the two backrest main tubes and the arc tube are integrally formed, and a backrest soft package is sleeved on the backrest tube.

[0012] Preferably, the backrest main tube is further connected with a backrest support tube. The backrest support tube is rotatably connected to the backrest main tube through a support connecting piece to support the backrest module when the chair lies flat;

[0013] A ground support connecting piece is provided on one side of the backrest support tube close to the ground to increase the friction force and prevent the backrest support tube from moving.

[0014] Preferably, the armrest module includes armrests located on both sides of the seat surface module, a front leg tube and a rear leg tube rotatably connected to the seat surface side rods. The front leg tube and the rear leg tube are rotatably connected through an armrest connecting piece and unfold and fold along with the armrest connecting piece;

[0015] The seat surface adapter is provided with a protruding rod, and a flipping bar is respectively rotatably connected to the protruding rod and the rear leg tube;

[0016] Foot wheels are respectively provided on one side of the front leg tube and the rear leg tube away from the armrest. The foot wheels are respectively connected to the front leg tube or the rear leg tube through a foot wheel inner plug.

[0017] Preferably, a fixing groove is provided on the back of the armrest. A number of gear fixing blocks are provided in the fixing groove. The armrest connecting piece includes a male armrest part and a female armrest part. The male armrest part is provided with an inner plug for mating and inserting with the front leg tube, and the female armrest part is provided with an inner plug for mating and inserting with the rear leg tube to be connected to the front leg tube and the rear leg tube respectively; a gear fixing column is provided on the male armrest part or the female armrest part. When the gear fixing column moves in the fixing groove and is clamped between the corresponding gear fixing blocks, the folding angle of the chair can be adjusted.

[0018] Preferably, it further includes a footrest module. The footrest module includes a footrest connecting piece installed on the side rod of the seat surface, a telescopic tube that telescopically moves relative to the footrest connecting piece, and a footrest for supporting the feet. The footrest connecting piece is provided with a telescopic through hole, and the telescopic tube slides in the telescopic through hole to drive the footrest to move.

[0019] Preferably, a flipping connecting piece is connected to the end of the telescopic tube. The flipping connecting piece is provided with a fixing hole and a flipping hole. A fixing rod is inserted into the fixing hole, and a flipping cross bar is inserted into the flipping hole. The footrest is fixed on the flipping cross bar. When using the footrest, the telescopic tube is stretched and the flipping cross bar is flipped until the front of the footrest faces upward, and the fixing rod supports the footrest; when not using the footrest, the flipping cross bar is flipped until the front of the footrest faces downward and the telescopic tube is contracted, and the footrest is placed under the seat cushion.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] (1) With the cooperation of the seat surface module and the backrest module of this folding office chair, the chair can be sat, reclined and folded. In the reclined state, the backrest cross bar fits better with the waist, solving the problem of the waist being suspended when the user lies flat; at the same time, in the folded state, the backrest tube is close to horizontal with the top of the sponge seat cushion, so as to reduce the volume in the folded state and facilitate packaging and transportation.

[0022] (2) The noise is greatly reduced in different adjustment states of the armrest, and the product can be adjusted in 6 gears from the sitting posture of 102 degrees to the reclined posture of 170 degrees, and the adjustment angle of each gear is fixed at 13.6 degrees.

[0023] (3) Under the same conditions (the total length of the telescopic frame remains unchanged), the telescopic leg rest can extend a longer distance and adapt to taller people. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of this folding office chair in the reclined state.

[0025] Figure 2 It is a top view of this folding office chair in the reclined state.

[0026] Figure 3 It is a side view of this folding office chair in the reclined state.

[0027] Figure 4 This is a structural schematic diagram of the folding office chair in the sitting position.

[0028] Figure 5 This is a structural schematic diagram of the folding office chair in the folded state.

[0029] Figure 6 This is a structural schematic diagram of the frame of the folding office chair in the sitting position.

[0030] Figure 7 This is a structural schematic diagram of the frame of the folding office chair in the lying position.

[0031] Figure 8 This is a structural schematic diagram of the armrest of the folding office chair.

[0032] Figure 9 This is a structural schematic diagram of the armrest module of the folding office chair.

[0033] Figure 10 This is a structural schematic diagram of the footrest module of the folding office chair.

[0034] Figure 11 This is a structural schematic diagram of the support connecting piece of the folding office chair.

[0035] In the attached drawings: 10 - seat surface module, 11 - seat surface side rod, 12 - seat cushion, 13 - seat surface cross bar, 20 - backrest module, 21 - backrest tube, 22 - backrest adapter, 23 - backrest cross bar, 24 - backrest soft package, 241 - backrest perforation, 242 - arc pillow, 25 - backrest support tube, 26 - support connecting piece, 261 - fixed clamping strip, 262 - support tube insertion hole, 27 - ground support connecting piece, 30 - armrest module, 31 - armrest, 311 - armrest body, 3111 - clamping post, 3112 - rubber plug, 3113 - slide bar, 312 - armrest lower cover, 313 - fixed groove, 314 - gear fixing block, 32 - front leg tube, 321 - front leg tube connecting rod, 33 - rear leg tube, 331 - rear leg tube connecting rod, 34 - armrest connecting piece, 341 - armrest male part, 342 - armrest female part, 343 - gear fixing post, 35 - caster, 36 - caster inner plug, 40 - footrest module, 41 - footrest connecting piece, 411 - telescopic perforation, 42 - telescopic tube, 421 - telescopic tube outer plug, 422 - positioning screw, 43 - footrest, 44 - flipping connecting piece, 45 - fixed rod, 46 - flipping cross bar, 5 - seat surface adapter, 51 - insertion part, 52 - rotating part, 6 - protruding rod, 7 - flipping bar. Detailed implementation mode

[0036] Embodiment 1: A preferred embodiment of the present utility model provides a folding office chair convenient for taking a nap, which includes a seat surface module 10, a backrest module 20 that flips relative to the seat surface module 10, and an armrest module 30 that supports the seat surface module 10. The seat surface module 10 and the backrest module 20 are connected by a seat surface adapter 5. A backrest crossbar 23 opposite to the seat surface module 10 is provided on the backrest module 20, which supports the user's waist when the chair lies flat.

[0037] The seat surface module 10 includes seat surface side rods 11 and a seat cushion 12 installed on the seat surface side rods 11. The backrest module 20 includes a backrest tube 21 and a backrest adapter 22 connecting the backrest tube 21. The backrest tube 21 and the seat surface side rods 11 are connected by a seat surface adapter 5. The seat surface adapter 5 includes a plug-in portion 51 connected to the seat surface side rods 11 and a rotating portion 52 connected to the plug-in portion 51. The rotating portion 52 is rotatably connected to the backrest adapter 22. The backrest crossbar 23 is arranged between two groups of backrest adapters 22. When the chair lies flat, the backrest crossbar 23 is located below the backrest tube 21, reducing the suspension of the user's waist while the backrest crossbar 23 does not press against the waist.

[0038] The rotating portion 52 extends along the height direction of the seat cushion 12, so that when the chair lies flat, the backrest tube 21 is approximately horizontal with the top surface of the seat cushion 12, reducing the suspension of the waist; and when the chair is folded, the backrest tube 21 is approximately horizontal with the top surface of the seat cushion 12, and the backrest crossbar 23 is located above the backrest tube 21, reducing the floor area occupied by the chair after folding.

[0039] Preferably, the height of the rotating portion 52 is equal to the height of the seat cushion 12. At least two seat surface crossbars 13 are provided between two groups of seat surface side rods 11 for fixedly supporting the seat cushion 12; the seat cushion 12 is a sponge seat cushion, and its front end is provided with an arc to fit the bottom of the human knee.

[0040] Two groups of the backrest adapters 22 are respectively provided with a vertical tube hole for plugging and installing the backrest tube 21 and a crossbar hole for plugging and installing the backrest crossbar 23, so as to quickly install the backrest tube 21 and the backrest crossbar 23; the backrest tube 21 includes two backrest main tubes inserted into the vertical tube holes and an arc tube connected to the two backrest main tubes. The arc tube bends towards the top of the seat cushion 12 to form a pillow area convenient for the user's headrest; preferably, the two backrest main tubes and the arc tube are integrally formed.

[0041] A backrest soft package 24 is sleeved on the backrest tube 21. The backrest soft package 24 includes an arc pillow 242 sleeved on the arc tube and a backrest cloth sleeve sleeved on the two backrest main tubes. The arc pillow 142 is connected to the backrest cloth sleeve. A backrest perforation 241 is provided on the backrest cloth sleeve, and the backrest crossbar 23 passes through the backrest perforation 241 to support the backrest cloth sleeve.

[0042] Embodiment 2: A preferred embodiment of the present utility model provides a folding office chair convenient for taking a nap, which is only different from the above embodiment in that: the backrest main pipe is further connected with a backrest support pipe 25, and the backrest support pipe 25 is rotatably connected with the backrest main pipe through a support connecting piece 26. A clamping groove for accommodating the backrest main pipe is provided on the support connecting piece 26, so that when the chair lies flat, the backrest main pipe is placed in the clamping groove to support the backrest main pipe; the backrest support pipe 25 is a U-shaped support pipe, and a fixed clamping strip 261 and a support pipe insertion hole 262 are provided on the support connecting piece 26. The U-shaped support pipe (a round pipe with a diameter of 19 mm) is inserted into the support pipe insertion hole 262 and fixed by rivets, and it is fixed to the backrest pipe 21 to complete the assembly, and the backrest pipe 21 is fixed in the lying posture by cooperating with the fixed clamping strip 261.

[0043] A ground support connecting piece 27 is provided on one side of the backrest support pipe 25 close to the ground to increase the friction force and prevent the backrest support pipe 25 from moving.

[0044] Embodiment 3: A preferred embodiment of the present utility model provides a folding office chair convenient for taking a nap, which is only different from the above embodiment in that: the armrest module 30 includes armrests 31 located on both sides of the seat surface module 10, a front leg pipe 32 rotatably connected with the seat surface side rod 11, and a rear leg pipe 33. The front leg pipe 32 and the rear leg pipe 33 are rotatably connected through an armrest connecting piece 34 and unfold and fold along with the armrest connecting piece 34;

[0045] The seat surface adapter 5 is provided with a protruding rod 6, and a turning bar 7 is rotatably connected to the protruding rod 6 and the rear leg pipe 33 respectively to support the rear leg pipe 33;

[0046] Caster wheels 35 are respectively provided on one side of the front leg pipe 32 and the rear leg pipe 33 away from the armrest 31, and the caster wheels 35 are respectively connected with the front leg pipe 32 or the rear leg pipe 33 through caster wheel inner plugs 36.

[0047] A fixing groove 313 is provided on the back surface of the armrest 31, and a plurality of gear fixing blocks 314 are provided in the fixing groove 313. The armrest connecting piece 34 includes an armrest male part 341 and an armrest female part 342. The armrest male part 341 is provided with an insertion inner plug matched with the front leg pipe 32, and the armrest female part 342 is provided with an insertion inner plug matched with the rear leg pipe 33 to be respectively connected with the front leg pipe 32 and the rear leg pipe 33; a gear fixing column 343 is provided on the armrest male part 341 or the armrest female part 342, so that when the gear fixing column 343 moves in the fixing groove 313 and is clamped between the corresponding gear fixing blocks 314, the folding angle of the chair can be adjusted.

[0048] Five fixing blocks 314 (the fixing blocks 314 can achieve one gear every 13.6 degrees through spacing calculation) are arranged inside the armrest 31 and can cooperate with the gear fixing columns 343 of the armrest connecting piece 34 to fix the backrest angle. Since the combined armrest 31 and the armrest connecting piece 34 are both injection molded parts, the matching noise is greatly reduced compared with that of metal.

[0049] Embodiment 4: A preferred embodiment of the present utility model provides a folding office chair convenient for taking a nap, and the difference from the above embodiment is only that: it further includes a footrest module 40. The footrest module 40 includes a footrest connecting member 41 installed on the side rod 11 of the seat surface, a telescopic tube 42 that telescopically moves relative to the footrest connecting member 41, and a footrest 43 for supporting the feet. The footrest connecting member 41 is provided with a telescopic through hole 411, and the telescopic tube 42 slides in the telescopic through hole 411 to drive the footrest 43 to move.

[0050] The footrest 43 is a sponge leg rest, which is composed of a bottom wooden board, shaped sponge, and cloth surface.

[0051] A turning connecting member 44 is connected to the end of the telescopic tube 42. The turning connecting member 44 is provided with a fixing hole and a turning hole. A fixing rod 45 is inserted into the fixing hole, and a turning cross bar 46 is inserted into the turning hole. The footrest 43 is fixed on the turning cross bar 46. When using the footrest, the telescopic tube 42 is stretched and the turning cross bar 46 is turned until the front of the footrest 43 faces upward, and the fixing rod 45 supports the footrest 43; when not using the footrest, the turning cross bar 46 is turned until the front of the footrest 43 faces downward and the telescopic tube 42 is contracted, and the footrest 43 is placed under the seat cushion 12.

[0052] Working principle and usage method: In the folded state, pull the backrest module 20 backward and push the combined armrest 31 forward at the same time. When the protruding rod 6 touches the front end of the rear leg tube 33, the sitting posture state is completed; in the sitting posture state, lift the armrest 31 with both hands, adjust it to the appropriate gear, and then press down the armrest to complete the fixation (when the gear fixing post 343 touches the gear fixing block 314 inside the armrest 31), the maximum lying flat state. At the same time, pull up the backrest support tube 25 and snap it into the backrest tube 21, and pull out the telescopic tube 42 to the limit, and turn the footrest 43 by 180 degrees to complete (see Figures 1-3 the figure of the semi-reclining posture state); the reverse operation is vice versa.

Claims

1. A folding office chair convenient for taking a nap, comprising a seat surface module (10), a backrest module (20) that flips relative to the seat surface module (10), and an armrest module (30) that supports the seat surface module (10), characterized in that, The seat surface module (10) is connected to the backrest module (20) through a seat surface adapter (5). A backrest crossbar (23) opposite to the seat surface module (10) is provided on the backrest module (20) to support the user's waist when the chair lies flat. The seat surface module (10) includes seat surface side rods (11) and a seat cushion (12) installed on the seat surface side rods (11). The backrest module (20) includes a backrest tube (21) and a backrest adapter (22) connecting the backrest tube (21). The backrest tube (21) is connected to the seat surface side rods (11) through the seat surface adapter (5). The seat surface adapter (5) includes a plug-in portion (51) connected to the seat surface side rods (11) and a rotating portion (52) connected to the plug-in portion (51). The rotating portion (52) is rotatably connected to the backrest adapter (22). The backrest crossbar (23) is provided between two groups of backrest adapters (22). When the chair lies flat, the backrest crossbar (23) is located below the backrest tube (21) to reduce the suspension of the user's waist while the backrest crossbar (23) does not press against the waist.

2. The folding office chair convenient for taking a nap according to claim 1, characterized in that, The rotating portion (52) extends along the height direction of the seat cushion (12), so that when the chair lies flat, the top surface of the backrest tube (21) and the seat cushion (12) is close to horizontal to reduce the suspension of the waist; and when the chair is folded, the top surface of the backrest tube (21) and the seat cushion (12) is close to horizontal, and the backrest crossbar (23) is located above the backrest tube (21) to reduce the floor area occupied by the chair after folding.

3. The folding office chair convenient for taking a nap according to claim 2, characterized in that, The height of the rotating portion (52) is equal to the height of the seat cushion (12). At least two seat surface crossbars (13) are provided between two groups of seat surface side rods (11) to fixedly support the seat cushion (12). The seat cushion (12) is a sponge seat cushion, and its front end is provided with an arc to fit the bottom of the human knee.

4. The foldable office chair convenient for taking a nap according to claim 1, wherein, Two groups of the backrest adapters (22) are respectively provided with a vertical tube hole for plugging and installing the backrest tube (21) and a crossbar hole for plugging and installing the backrest crossbar (23) to facilitate the quick installation of the backrest tube (21) and the backrest crossbar (23); the backrest tube (21) includes two backrest main tubes inserted into the vertical tube holes and an arc tube. The arc tube bends towards the top of the seat cushion (12) to form a pillow area for the user's headrest; the two backrest main tubes and the arc tube are integrally formed, and a backrest soft package (24) is sleeved on the backrest tube (21).

5. The foldable office chair convenient for taking a nap according to claim 4, wherein, The backrest main tube is also connected with a backrest support tube (25). The backrest support tube (25) is rotatably connected to the backrest main tube through a support connecting piece (26) to support the backrest module (20) when the chair lies flat. A ground support connecting piece (27) is provided on one side of the backrest support tube (25) close to the ground to increase the friction force and prevent the backrest support tube (25) from moving.

6. A folding office chair convenient for taking a nap according to any one of claims 1-5, characterized in that, The armrest module (30) includes armrests (31) located on both sides of the seat surface module (10), a front leg tube (32) rotatably connected to the seat surface side rod (11), and a rear leg tube (33). The front leg tube (32) and the rear leg tube (33) are rotatably connected through an armrest connecting piece (34) and unfold and fold along with the armrest connecting piece (34). The seat surface adapter (5) is provided with a protruding rod (6), and a turning bar (7) is rotatably connected to the protruding rod (6) and the rear leg tube (33) respectively; Caster wheels (35) are respectively provided on one side of the front leg tube (32) and the rear leg tube (33) away from the armrest (31), and the caster wheels (35) are respectively connected to the front leg tube (32) or the rear leg tube (33) through caster wheel inner plugs (36).

7. The foldable office chair convenient for taking a nap according to claim 6, wherein, A fixing groove (313) is provided on the back surface of the armrest (31), and a number of gear fixing blocks (314) are provided in the fixing groove (313). The armrest connector (34) includes an armrest male part (341) and an armrest female part (342). The armrest male part (341) is provided with an inner plug that fits and plugs with the front leg tube (32), and the armrest female part (342) is provided with an inner plug that fits and plugs with the rear leg tube (33) to be connected to the front leg tube (32) and the rear leg tube (33) respectively; a gear fixing column (343) is provided on the armrest male part (341) or the armrest female part (342), so that when the gear fixing column (343) moves in the fixing groove (313) and is clamped between the corresponding gear fixing blocks (314), the folding angle of the chair can be adjusted.

8. The folding office chair convenient for taking a nap according to claim 6, characterized in that, It further includes a footrest module (40). The footrest module (40) includes a footrest connector (41) installed on the seat surface side rod (11), a telescopic tube (42) that telescopically moves relative to the footrest connector (41), and a footrest (43) for supporting the feet. A telescopic through hole (411) is provided on the footrest connector (41), and the telescopic tube (42) slides in the telescopic through hole (411) to drive the footrest (43) to move.

9. The folding office chair convenient for taking a nap according to claim 8, wherein A turning connector (44) is connected to the end of the telescopic tube (42). The turning connector (44) is provided with a fixing hole and a turning hole. A fixing rod (45) is inserted into the fixing hole, and a turning cross bar (46) is inserted into the turning hole. The footrest (43) is fixed on the turning cross bar (46). When using the footrest, the telescopic tube (42) is stretched and the turning cross bar (46) is turned until the front of the footrest (43) faces upward, and the fixing rod (45) supports the footrest (43); when not using the footrest, the turning cross bar (46) is turned until the front of the footrest (43) faces downward and the telescopic tube (42) is contracted, and the footrest (43) is placed under the seat cushion (12).

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