Seat

Abstract

The utility model belongs to the technical field of seats, and particularly relates to a seat which comprises a base, a seat panel and a backrest are arranged on the base, a back cushion is arranged on the front side of the backrest, the back cushion is arranged on the backrest in a sliding mode, the back cushion can slide relative to the backrest so as to adjust the height of the back cushion, a locking piece is arranged on the back cushion, and the locking piece is connected with the back cushion. The locking piece can control the back cushion and the backrest to be relatively fixed; the back cushion can be installed on the lower portion of the front side of the backrest and used as a waist pillow, the back cushion can slide to the upper portion or the upper portion of the front side of the backrest and used as a head pillow, and the seat is good in comfort and convenient for a user to use flexibly.

Description

Technical Field

[0001] This utility model belongs to the field of seating technology, and specifically relates to a seating system. Background Technology

[0002] A chair is a type of seating with a backrest, and sometimes armrests. It is highly comfortable, allowing users to lean against the backrest for support and effectively reducing fatigue from prolonged sitting.

[0003] To further improve seat comfort, some seats are equipped with lumbar support pillows. These pillows provide lumbar support to the user's lower back, effectively relieving fatigue. For example, Chinese utility model patent CN202223596998.5 discloses a desk and chair that can be used for both sitting and lying down, facilitating afternoon naps. It includes a seat, a backrest, and legs located at the lower end of the seat. An angle adjuster is provided between the seat and the backrest, allowing the backrest to be adjusted at its angle to the seat. A storage shell is fixedly attached to the lower side of the seat. An extension plate is provided at the end of the storage shell away from the backrest, and a movable plate that slides within the storage shell is fixedly attached to the side of the extension plate closest to the storage shell. A lumbar support pad is provided on the upper side of the backrest, and the lumbar support pad is secured to the surface of the backrest by an elastic cord.

[0004] In the above structure, the lumbar support pad is tied to the backrest with an elastic cord. However, during use, the lumbar support pad is prone to rising and falling due to stress, which affects the lumbar support pad's support for the user's waist and the comfort of the desk and chair. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a seat that is comfortable and convenient for users to use flexibly.

[0006] The purpose of this utility model is achieved as follows:

[0007] A seat includes a base, a seat panel and a backrest on the base, a pillow on the front side of the backrest, the pillow being slidably disposed on the backrest, the pillow being able to slide relative to the backrest to adjust the height of the pillow, and a locking member being provided on the pillow to control the pillow to be fixed relative to the backrest.

[0008] The cushion can be installed on the lower front side of the backrest and used as a lumbar support, and the cushion can slide to the upper front side or above the backrest and be used as a headrest.

[0009] The present invention is further configured such that: at least two sliding grooves are provided at intervals on the backrest, a sliding part adapted to the sliding groove is provided on the pillow, and a constricted opening communicating with the sliding groove is provided on the front side of the backrest, and a connecting part adapted to the constricted opening is provided on the sliding part.

[0010] The utility model further sets up: the locking piece is movably arranged on the sliding part, a plurality of positioning holes matched with the locking piece are arranged on the side wall of the sliding groove at intervals, and an elastic member is arranged on the sliding part, the elastic member drives the locking piece to reset and cooperate with the positioning hole, and the sliding part is fixed relative to the backrest; under the action of external force, the locking piece can be separated from the positioning hole and make the sliding part and the backrest relatively slide.

[0011] The utility model further sets up: the backrest includes a backrest main body, the connecting part extends downwards to the backrest main body, the sliding part is arranged at the lower end of the connecting part, and the sliding part can make the backrest main body protrude from the upper side of the backrest by sliding along the sliding groove.

[0012] The utility model further sets up: the sliding part is provided with a reinforcing block on the side close to the necking, and the reinforcing block extends to one side of the connecting part and is connected with the connecting part.

[0013] The utility model further sets up: the backrest is rotatably arranged on the base, and an electric push rod is arranged on the base, the electric push rod is connected with the backrest, and the electric push rod can drive the backrest to rotate relative to the base.

[0014] The utility model further sets up: a first limiting swing groove is arranged on the base, a first limiting convex is arranged on the backrest and matched with the first limiting swing groove, and the first limiting convex and the first limiting swing groove can limit the rotation range of the backrest and the base.

[0015] The utility model further sets up: an extension frame is slidably arranged on the front part of the base, a supporting plate is rotatably arranged on the extension frame, a first limiting wall is arranged on the extension frame, a second limiting wall is arranged on the supporting plate, the first limiting wall can support the second limiting wall and make the supporting plate expand to the front of the extension frame.

[0016] The utility model further sets up: an emptying groove is arranged on the extension frame, the supporting plate can be folded relative to the extension frame, the supporting plate can be rotated from above the emptying groove to below the emptying groove, and the extension frame and the base are relatively slid and moved to below the seat panel.

[0017] The utility model further sets up: a third limiting wall is arranged on the extension frame, and a fourth limiting wall is arranged on the supporting plate, under the action of gravity, the fourth limiting wall can abut on the third limiting wall and make the supporting plate and the extension frame keep the folded state.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. The utility model discloses a backrest is slidably arranged on the backrest and can be controlled by locking piece relative fixation of backrest and backrest, convenient for user adjustment, convenient for user flexible use, and the structure is favorable to the stable installation of backrest, avoids the displacement of backrest during use to influence the support of backrest to user, is favorable to the improvement of the comfort of desk and chair, and because the backrest can be slid to the upper portion of the front side of backrest or above and is used as headrest, the structure is favorable to the use of backrest, convenient for user flexible use.

[0020] 2. The utility model discloses at least two sliding grooves and sliding parts are favorable to the stable sliding and stable installation of backrest, avoid the deflection damage of backrest during use, and the setting of the necking and connecting portion can avoid the accidental separation of backrest and backrest, convenient for the stable installation of backrest, the locking piece and elastic piece set up on the sliding part are favorable to the hidden setting of locking piece and elastic piece, avoid other sundries to influence the movement of locking piece and elastic piece, and because locking piece can be separated from the positioning hole under the action of external force, the quick adjustment of backrest is convenient, and user is convenient to use.

[0021] 3. The utility model discloses the connecting portion of the extension of backrest main body below is convenient for the convex of backrest main body from the top of backrest, is convenient for backrest as headrest use, and is convenient for user use, the setting of reinforcing pad is favorable to the connection intensity of connecting portion and sliding part, avoids the bending damage of connecting portion and sliding part connection position during use, and is favorable to prolonging the service life of backrest.

[0022] 4. The utility model discloses the backrest of rotation setting on the base is convenient for user flexible adjustment according to need, is favorable to the improvement of the comfort of seat, and the structure is driven backrest rotation through electric push rod, and the automatic adjustment of backrest is convenient, and user is convenient to use, first limit protruding and first limit swing groove are convenient for limiting the rotation range of backrest and base, avoid the chair center to fall in the lateral surface of base due to the too big rotation angle of backrest, and user is convenient to use.

[0023] 5. The utility model discloses the setting of extension frame and support plate is convenient for user to place leg, is convenient for user to lie on the chair and take a nap, and through first limit wall and second limit wall and make support plate and extension frame keep the unfolded state, simple structure, convenient for production and processing, the setting of the air gap is convenient for support plate to be stored below seat panel, and the structure will not lead to the accidental downward overturning of support plate during use, the simple structure of third limit wall and fourth limit wall is convenient for support plate to be stored below seat panel, avoids the free swing of support plate to influence the normal use of seat. ACCURACY

[0024] Figure 1 It is the structure schematic diagram of the utility model discloses;

[0025] Figure 2 It is the use state diagram of the utility model discloses;

[0026] Figure 3 is the explosion schematic view of the utility model;

[0027] Figure 4 is the connection structure schematic view of the support frame, backrest and electric push rod in the utility model;

[0028] Figure 5 is the sectional view of the backrest and backrest connection structure in the utility model;

[0029] Figure 6 is the structure schematic view of the base in the utility model;

[0030] Figure 7 is the structure schematic view of the base in the utility model;

[0031] Figure 8 is the structure schematic view of the backrest in the utility model;

[0032] Figure 9 is the structure schematic view of the extension frame in the utility model;

[0033] Figure 10 is the structure schematic view of the support plate in the utility model;

[0034] Figure 11 is the structure schematic view of the backrest in the utility model;

[0035] Figure 12 is the structure schematic view of the backrest in the utility model;

[0036] Figure 13 is the local structure schematic view of the armrest in the utility model.

[0037] The meaning of the reference numerals in the drawing: 1-base; 11-first hinged protrusion; 12-guide hole; 13-first limiting swing groove; 14-support frame; 2-backrest; 21-second hinged protrusion; 22-first limiting protrusion; 23-sliding groove; 24-necked opening; 25-positioning hole; 26-second limiting protrusion; 27-convex edge; 3-seat panel; 4-extension frame; 41-extension rod; 42-avoidance slot; 43-rotating rod; 44-first limiting block; 45-first limiting wall; 46-third limiting wall; 5-support plate; 51-first swing groove; 52-second limiting wall; 53-fourth limiting wall; 54-pull handle groove; 6-backrest; 61-backrest main body; 62-connection part; 63-sliding part; 64-strengthening block; 65-mounting hole; 7-armrest; 71-second limiting swing groove; 8-electric push rod; 9-locking piece; 91-elastic piece. DETAILED DESCRIPTION

[0038] The utility model will be further described in combination with the drawings and specific embodiments:

[0039] Referring to Figures 1 to 13 As shown in the figure, a seat comprises a base 1, a seat panel 3 and a backrest 2 are arranged on the base 1, a headrest 6 is arranged on the front side of the backrest 2, the headrest 6 is slidingly arranged on the backrest 2, the headrest 6 can slide relative to the backrest 2 to adjust the height of the headrest 6, and the headrest 6 is provided with a locking piece 9, the locking piece 9 can control the relative fixation of the headrest 6 and the backrest 2, in the structure, the headrest 6 is slidingly arranged on the backrest 2 and the relative fixation of the headrest 6 and the backrest 2 can be controlled by the locking piece 9, which is convenient for the user to adjust and use flexibly, and the structure is conducive to the stable installation of the headrest 6, avoids the displacement of the headrest 6 affecting the support of the user during use, and is conducive to improving the comfort of the desk and chair.

[0040] The headrest 6 can be installed on the lower part of the front side of the backrest 2 and used as a waist pillow, and the headrest 6 can be slid to the upper part or above the front side of the backrest 2 and used as a headrest, in the structure, the headrest 6 can be used as a waist pillow and a headrest, which is conducive to increasing the use of the headrest 6 and facilitating the flexible use of the user.

[0041] At least two sliding grooves 23 are arranged on the backrest 2, the headrest 6 is provided with a sliding part 63 matched with the sliding grooves 23, and the front side of the backrest 2 is provided with a necking 24 communicated with the sliding grooves 23, the sliding part 63 is provided with a connecting part 62 matched with the necking 24, and the at least two sliding grooves 23 and the sliding part 63 are conducive to the stable sliding and stable installation of the headrest 6, avoid the headrest 6 from being skewed and damaged during use, and the setting of the necking 24 and the connecting part 62 can avoid the headrest 6 from being accidentally separated from the backrest 2, which is convenient for the stable installation of the headrest 6, and in the embodiment, two sliding grooves 23 are arranged on the backrest 2, and the headrest 6 is provided with two sliding parts 63 matched with the sliding grooves 23.

[0042] The locking piece 9 can be detachably connected with the backrest 2, during use, the relative position of the headrest 6 and the backrest 2 is adjusted first, and then the backrest 2 and the headrest 6 are fixed relative to each other by the locking piece 9, preferably, the locking piece 9 is movably arranged on the sliding part 63, a plurality of positioning holes 25 matched with the locking piece 9 are arranged on the side wall of the sliding groove 23 at intervals, and the sliding part 63 is provided with an elastic piece 91, the elastic piece 91 drives the locking piece 9 to reset and cooperate with the positioning hole 25, and the sliding part 63 is fixed relative to the backrest 2; under the action of external force, the locking piece 9 can be separated from the positioning hole 25 and make the sliding part 63 slide relative to the backrest 2, the locking piece 9 and the elastic piece 91 arranged on the sliding part 63 are conducive to the hidden arrangement of the locking piece 9 and the elastic piece 91, avoid other sundries affecting the movement of the locking piece 9 and the elastic piece 91, and because the locking piece 9 can be separated from the positioning hole 25 under the action of external force, the headrest 6 can be adjusted quickly, which is convenient for the user to use.

[0043] In order to facilitate the cooperation and disengagement of the locking piece 9 and the positioning hole 25, the locking piece 9 is preferably provided with an arc-shaped guide surface near one end of the positioning hole 25, and in the embodiment, the locking piece 9 is spherical, and the arc-shaped guide surface is the outer wall of the locking piece 9. In the embodiment, the mounting hole 65 is arranged on the sliding part 63, and the elastic piece 91 and the locking piece 9 are arranged in the mounting hole 65. The elastic piece 91 drives the locking piece 9 to pass out of the mounting hole 65 and cooperate with the positioning hole 25.

[0044] The backrest 6 comprises a backrest body 61, a connecting part 62 extending downward from the backrest body 61, and a sliding part 63 arranged at the lower end of the connecting part 62. The sliding part 63 slides along the sliding groove 23 to make the backrest body 61 protrude from above the backrest 2. The connecting part 62 extending downward from the backrest body 61 facilitates the protrusion of the backrest body 61 from above the backrest 2, and facilitates the use of the backrest 6 as a headrest, thereby facilitating the use of the user.

[0045] The sliding part 63 is provided with a reinforcing block 64 near one side of the necked portion 24. The reinforcing block 64 extends to one side of the connecting part 62 and is connected with the connecting part 62. The provision of the reinforcing block 64 is beneficial to improve the connection strength of the connecting part 62 and the sliding part 63, avoid the bending damage of the connection position of the connecting part 62 and the sliding part 63 during use, and prolong the service life of the backrest 6.

[0046] Preferably, the backrest 2 is provided with a protruding edge 27 extending forward on both sides. The backrest body 61 is arranged on the backrest 2, and the protruding edge 27 is arranged on both sides of the backrest body 61. This structure can avoid the stress on both sides of the backrest 6 and cause the bending damage of the connecting part 62. The armrest 7 is rotatably arranged on the side surface of the protruding edge 27. The second limiting swing groove 71 is arranged on the armrest 7. The second limiting protrusion 26 is arranged on the side surface of the protruding edge 27 and is matched with the second limiting swing groove 71. During the relative rotation of the armrest 7 and the backrest 2, the second limiting protrusion 26 swings in the second limiting swing groove 71 to limit the rotation angle of the armrest 7.

[0047] The backrest 2 is rotatably arranged on the base 1, and the electric push rod 8 is arranged on the base 1. The electric push rod 8 is connected with the backrest 2. The extension and retraction of the electric push rod 8 can drive the relative rotation of the backrest 2 and the base 1. The backrest 2 rotatably arranged on the base 1 is convenient for the user to adjust flexibly according to needs, and is beneficial to improve the comfort of the seat. In this structure, the backrest 2 is driven to rotate by the electric push rod 8, which is convenient for automatic adjustment of the backrest 2 and convenient for the user to use.

[0048] The first limiting swing groove 13 is arranged on the base 1, the first limiting convex 22 matched with the first limiting swing groove 13 is arranged on the backrest 2, the first limiting convex 22 and the first limiting swing groove 13 are matched to limit the rotating range of the backrest 2 and the base 1, the first limiting convex 22 and the first limiting swing groove 13 are convenient for limiting the rotating range of the backrest 2 and the base 1, the chair center is prevented from falling on the side of the base 1 due to the too large rotating angle of the backrest 2, and the user is facilitated to use.

[0049] The support frame 14 for supporting the seat panel 3 is arranged on the base 1 in the embodiment, the first hinged convex 11 is arranged below the support frame 14, the second hinged convex 21 is arranged at the lower end of the backrest 2, and the electric push rod 8 is rotationally connected with the first hinged convex 11 and the second hinged convex 21 at two ends.

[0050] The extension frame 4 is slidably arranged at the front of the base 1, the supporting plate 5 is rotationally arranged on the extension frame 4, the first limiting wall 45 is arranged on the extension frame 4, the second limiting wall 52 is arranged on the supporting plate 5, the first limiting wall 45 can support the second limiting wall 52 and make the supporting plate 5 expand to the front of the extension frame 4, the extension frame 4 and the supporting plate 5 are arranged to facilitate the user to place legs and lie on the chair for a noon break, the first limiting wall 45 and the second limiting wall 52 make the supporting plate 5 keep the expanded state with the extension frame 4, and the structure is simple and convenient for production and processing.

[0051] Preferably, the handle groove 54 is arranged on the supporting plate 5, and the user can control the rotation of the supporting plate 5 through the handle groove 54.

[0052] The emptying groove 42 is arranged on the extension frame 4 in the utility model, the supporting plate 5 is controlled to be folded relative to the extension frame 4, the supporting plate 5 can be rotated from above the emptying groove 42 to below the emptying groove 42, and the extension frame 4 is relatively slidably moved to below the seat panel 3 with the base 1, the emptying groove 42 is arranged to facilitate the supporting plate 5 to be stored below the seat panel 3, and the structure will not cause the supporting plate 5 to be accidentally turned down during use.

[0053] The third limiting wall 46 is arranged on the extension frame 4, the fourth limiting wall 53 is arranged on the supporting plate 5, under the action of gravity, the fourth limiting wall 53 can abut on the third limiting wall 46 and make the supporting plate 5 keep the folded state with the extension frame 4, the third limiting wall 46 and the fourth limiting wall 53 have the simple structure, the supporting plate 5 is facilitated to be stored below the seat panel 3, and the free swinging of the supporting plate 5 is avoided to affect the normal use of the seat.

[0054] Two guide holes 12 are arranged on the support frame 14, and the extension frame 4 is respectively provided with an extension rod 41 slidably connected with the guide hole 12, the extension rods 41 are connected through a rotating rod 43, the supporting plate 5 is rotatably connected with the rotating rod 43, the avoiding slot 42 is arranged between the two extension rods 41 and located at one side of the rotating rod 43, the supporting plate 5 is provided with an arc-shaped first swing groove 51, a second limiting wall 52 and a fourth limiting wall 53 are respectively located at both ends of the first swing groove 51, the extension frame 4 is provided with a first limiting block 44, the first limiting block 44 is arranged in the first swing groove 51, a first limiting wall 45 and a third limiting wall 46 are respectively arranged at both sides of the first limiting block 44.

[0055] The above embodiments are only preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A seat comprising a base (1) on which a seat panel (3) and a backrest (2) are arranged, characterized in that: The backrest (2) is provided with a back cushion (6) on the front side, the back cushion (6) is slidingly arranged on the backrest (2), the back cushion (6) can slide relative to the backrest (2) to adjust the height of the back cushion (6), and the back cushion (6) is provided with a locking piece (9), the locking piece (9) can control the relative fixation of the back cushion (6) and the backrest (2). The back cushion (6) can be installed on the lower part of the front side of the backrest (2) and used as a waist cushion, and the back cushion (6) can be slid to the upper part or above the front side of the backrest (2) and used as a headrest.

2. A seat as claimed in claim 1, characterized in that: The backrest (2) is provided with at least two sliding grooves (23) at intervals, the back cushion (6) is provided with a sliding part (63) matched with the sliding grooves (23), and the front side of the backrest (2) is provided with a necking (24) communicated with the sliding grooves (23), and the sliding part (63) is provided with a connecting part (62) matched with the necking (24).

3. A seat as claimed in claim 2, characterised in that: The locking piece (9) is movably arranged on the sliding part (63), the side wall of the sliding groove (23) is provided with a plurality of positioning holes (25) matched with the locking piece (9) at intervals, and the sliding part (63) is provided with an elastic piece (91), the elastic piece (91) drives the locking piece (9) to reset and cooperate with the positioning hole (25), and the sliding part (63) is relatively fixed with the backrest (2); under the action of external force, the locking piece (9) can be separated from the positioning hole (25) and make the sliding part (63) relatively slide with the backrest (2).

4. A seat according to claim 2 or 3, characterised in that: The back cushion (6) comprises a back cushion main body (61), the connecting part (62) extends downwardly to the back cushion main body (61), the sliding part (63) is arranged at the lower end of the connecting part (62), and the sliding of the sliding part (63) along the sliding groove (23) can make the back cushion main body (61) protrude above the backrest (2).

5. A seat as claimed in claim 4, characterised in that: The sliding part (63) is provided with a reinforcing block (64) on one side close to the necking (24), the reinforcing block (64) extends to one side of the connecting part (62) and is connected with the connecting part (62).

6. A seat according to claim 1 or 2 or 3 or 5, characterized in that: The backrest (2) is rotatably arranged on the base (1), and the base (1) is provided with an electric push rod (8), the electric push rod (8) is connected with the backrest (2), and the extension and retraction of the electric push rod (8) can drive the backrest (2) to rotate relative to the base (1).

7. A seat according to claim 6, wherein: The base (1) is provided with a first limiting swing groove (13), and the backrest (2) is provided with a first limiting protrusion (22) matched with the first limiting swing groove (13), the cooperation of the first limiting protrusion (22) and the first limiting swing groove (13) can limit the rotation range of the backrest (2) relative to the base (1).

8. A seat according to claim 1 or 2 or 3 or 5 or 7, characterized in that: The base (1) is provided with an extension frame (4) slidingly arranged on the front part, the extension frame (4) is rotatably provided with a supporting plate (5), the extension frame (4) is provided with a first limiting wall (45), the supporting plate (5) is provided with a second limiting wall (52), the first limiting wall (45) can support the second limiting wall (52) and make the supporting plate (5) expand forwardly to the extension frame (4).

9. A seat according to claim 8, wherein: The extension frame (4) is provided with a clearance groove (42), the control tray (5) is folded relative to the extension frame (4), the tray (5) can be rotated from above the clearance groove (42) to below the clearance groove (42), and is moved to below the seat panel (3) by sliding relative to the base (1) and the extension frame (4).

10. A seat as claimed in claim 9, characterized in that: The extension frame (4) is provided with a third limiting wall (46), and the tray (5) is provided with a fourth limiting wall (53), the third limiting wall (46) can support the fourth limiting wall (53) and keep the tray (5) and the extension frame (4) in a folded state.

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