Attitude-adjustable noon break chair

Abstract

The utility model discloses a posture-adjustable noon break chair, and belongs to the technical field of chairs. According to the posture-adjustable noon break chair, a backrest is arranged on the upper side of a base and comprises a headrest assembly; the headrest assembly comprises a headrest body, a sliding plate and a headrest positioning ball; the headrest positioning ball is fixedly arranged on the rear side face of the headrest body, and a spherical protruding part is arranged on the side, facing the backrest, of the headrest positioning ball; first through sliding grooves are longitudinally formed in the two sides of the backrest correspondingly. Sliding plates are arranged on the two sides of the rear side face of the headrest body correspondingly and are in sliding connection with the first sliding grooves; a plurality of headrest gear holes are longitudinally formed in the backrest, and the headrest positioning balls are embedded into the headrest gear holes; and a plurality of headrest and backrest height gears are arranged, so that the heights of the headrest and the backrest can be easily and accurately positioned and adjusted, and the operation of a user is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of seat, more specifically, relate to a posture adjustable lunch chair. BACKGROUND

[0002] The current office chair, e electric competition seat usually configure headrest, support the head of user, neck through headrest, to improve the comfort of seat, the headrest of most existing seat is fixed on the top of seat back, it is difficult to satisfy the individual needs of user.

[0003] In order to meet the different individual needs of user, the headrest of some existing seat is usually adjustable, can according to the user of different height, or different sitting posture requirement, the height of headrest is adjusted, and the headrest is adjusted to a preferable position of supporting head and neck, for example, in some seat, the lifting of headrest is realized by telescopic rod mechanism, but it needs to rely on the hand feeling of operator to adjust, which is not conducive to the positioning height of headrest. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a posture adjustable lunch chair, it is set with multiple headrest and backrest height position, can realize the positioning adjustment of headrest and backrest height easily and accurately, and it is beneficial to the operation of user.

[0005] The utility model relates to a posture adjustable lunch chair, backrest is arranged on the upside of base, and it includes headrest assembly. Headrest assembly includes headrest body, sliding plate and headrest positioning bead. Headrest positioning bead is fixedly arranged on the back of headrest body, and the convex part of spherical shape is arranged on the side of backrest towards headrest positioning bead. The first sliding slot is longitudinally arranged on the both sides of backrest. The sliding plate is arranged on the both sides of backrest body back, and the sliding plate is slidably connected with the first sliding slot. The headrest position hole is longitudinally arranged on the backrest, and the headrest positioning bead is embedded in the headrest position hole.

[0006] As the further improvement of the utility model, the headrest assembly further includes handle. The threaded hole is arranged on the sliding plate, and the threaded hole is located on the outside of backrest. The handle is embedded on the outside of sliding plate, and the through hole is arranged on the one end of handle coaxially with the threaded hole. The handle is screw-connected with the threaded hole through mounting bolt.

[0007] As the further improvement of the utility model, the headrest position hole is equally spaced on the backrest.

[0008] As a further improvement of the utility model, the back height assembly comprises an adjusting sleeve and an adjusting pipe. The adjusting sleeve is symmetrically arranged on the back side of the backrest, and the adjusting sleeve protrudes outward. A second sliding groove is formed in the adjusting sleeve. The adjusting pipe is connected with the second sliding groove. A notch is formed in the front side of the adjusting sleeve and embedded in the backrest. The notch is separated from the second sliding groove by a partition. A backrest positioning bead is fixed on the partition. The backrest positioning bead is provided with a spherical protrusion on the side facing the second sliding groove. A plurality of backrest position holes are formed in the side of the adjusting sleeve facing the backrest positioning bead. The backrest positioning bead is embedded in the backrest position hole.

[0009] As a further improvement of the utility model, the back height assembly further comprises a cover. The cover covers the surface of the notch, and the cover is connected with the partition.

[0010] As a further improvement of the utility model, the back height assembly further comprises a limiting screw. The limiting screw is arranged on any side of the backrest position hole and fixedly connected with the adjusting pipe. A limiting groove is formed in the same side of the partition as the limiting screw. The limiting groove and the second sliding groove are connected with each other. The limiting screw is located in the limiting groove. When the limiting screw abuts against the side wall of the limiting groove, the movement of the adjusting pipe is limited.

[0011] As a further improvement of the utility model, the back height assembly further comprises a fastening screw. A fastening hole is formed in the adjusting pipe. The fastening screw is fixedly connected with the backrest and the adjusting pipe through the fastening hole. The fastening screw is selectively arranged on the adjusting pipe to limit the movement of the adjusting pipe.

[0012] As a further improvement of the utility model, the bottom end of the adjusting pipe is rotatably connected with the base to adjust the relative angle between the backrest and the base.

[0013] As a further improvement of the utility model, the foot pad assembly further comprises a foot pad, an adapter sleeve, a first telescopic pipe and a second telescopic pipe. The second telescopic pipe is symmetrically arranged on the lower side of the base. The lower side of the second telescopic pipe is fixedly connected with the upper end of the supporting leg. The first telescopic pipe is embedded in the second telescopic pipe and slidably connected with the second telescopic pipe. One end of the first telescopic pipe is fixedly connected with one end of the adapter sleeve. The other end of the adapter sleeve is rotatably connected with the side wall of the foot pad, so that the foot pad can be flipped relative to the first telescopic pipe.

[0014] As a further improvement of the utility model, the supporting leg is fixedly provided with a pulley at the lower end.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] By setting the headrest assembly and the back height assembly, the headrest positioning beads and the headrest gear hole are selectively clamped, the backrest positioning beads and the backrest gear hole are selectively clamped, a plurality of headrest and backrest height gears are opened, different height gears are pre-set, and adjustment relying on the hand feeling of an operator is not needed, so that the headrest and the backrest height can be easily and accurately positioned and adjusted, and user operation is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the overall structure of the utility model;

[0018] Figure 2 It is a front view of the backrest of the utility model;

[0019] Figure 3 It is a back view of the backrest of the utility model;

[0020] Figure 4 It is a structural schematic view of the headrest of the utility model;

[0021] Figure 5 It is a structural schematic view of the handle of the utility model;

[0022] Figure 6 It is a schematic view of the internal structure of the back height assembly of the utility model;

[0023] Figure 7 It is an explosion view of the back height assembly of the utility model;

[0024] Figure 8 It is a local enlarged view of the handle of the utility model;

[0025] Figure 9 It is a working schematic view of the headrest adjustment of the utility model;

[0026] Figure 10 It is a structural schematic view of the foot pad assembly of the utility model;

[0027] Figure 11 It is another structural schematic view of the foot pad assembly of the utility model;

[0028] Figure 12 It is a structural schematic view of the second sliding groove of the utility model.

[0029] Mark explanation in the drawing:

[0030] Backrest 1, headrest assembly 2, headrest body 21, sliding plate 22, headrest positioning bead 23, first sliding groove 24, headrest gear hole 25, threaded hole 26, handle 27, back height assembly 3, adjusting sleeve 31, adjusting tube 32, second sliding groove 33, backrest positioning bead 34, backrest gear hole 35, limiting groove 36, limiting screw 37, fastening screw 38, base 4, cover 5, foot pad assembly 6, foot pad 61, adapter sleeve 62, first telescopic tube 63, second telescopic tube 64, supporting foot 65. DETAILED DESCRIPTION

[0031] Specific embodiment one: please refer to Figures 1-12 A posture-adjustable lunch chair, the backrest 1 is arranged on the upper side of the base 4, and the backrest 1 comprises a headrest assembly 2. The headrest assembly 2 comprises a headrest body 21, a sliding plate 22 and a headrest positioning bead 23. The headrest positioning bead 23 is fixedly arranged on the rear side of the headrest body 21, and the headrest positioning bead 23 is provided with a spherical protruding part towards the side of the backrest 1. The backrest 1 is provided with a first sliding groove 24 penetrating through the backrest 1 on each side in the longitudinal direction. The backrest 1 is provided with a sliding plate 22 on each side of the rear side of the headrest body 21, and the sliding plate 22 is in sliding connection with the first sliding groove 24. The backrest 1 is provided with a plurality of headrest gear holes 25 in the longitudinal direction, and the headrest positioning bead 23 is embedded in the headrest gear holes 25.

[0032] The headrest assembly 2 further comprises a handle 27. At least one threaded hole 26 is arranged on the sliding plate 22, and the threaded hole 26 is located on the outer side of the backrest 1. One end of the handle 27 is embedded on the outer side of the sliding plate 22, and a through hole coaxial with the threaded hole 26 is arranged on one end of the handle 27. The handle 27 and the threaded hole 26 are in threaded connection through a mounting bolt.

[0033] As shown in Figure 5 , by arranging the handle 27 on the rear side of the headrest body 21, the headrest can be moved up and down, and the lunch chair itself can be moved by directly pulling the handle 27.

[0034] Preferably, the plurality of headrest gear holes 25 are distributed at equal intervals on the backrest 1. In this embodiment, the plurality of headrest gear holes 25 are arranged on the center line of the backrest 1. As shown in Figure 9 , the headrest body 21 can be moved downward to the lower part of the backrest 1, at which time the headrest can be used as a waist rest, and the headrest body 21 can be used as a headrest and a waist rest, and the use mode is more flexible.

[0035] The back height assembly 3 comprises an adjusting sleeve 31 and an adjusting pipe 32. The adjusting sleeve 31 is symmetrically arranged on the back side of the backrest 1, and the adjusting sleeve 31 protrudes outward. The adjusting sleeve 31 is internally provided with a second sliding groove 33. The adjusting pipe 32 is in sliding connection with the second sliding groove 33. The front side of the adjusting sleeve 31 is internally provided with a notch embedded in the backrest 1. The notch and the second sliding groove 33 are separated by a partition. The partition is fixedly provided with a backrest positioning bead 34. The backrest positioning bead 34 is provided with a spherical protrusion on the side facing the second sliding groove 33. The adjusting sleeve 31 is provided with a plurality of backrest position holes 35 on the side facing the backrest positioning bead 34. The backrest positioning bead 34 is embedded in the backrest position hole 35. It should be noted that the headrest positioning bead 23 and the backrest positioning bead 34 have similar working principles in this embodiment, and will not be described here.

[0036] The back height assembly 3 further comprises a cover 5. The cover 5 covers the surface of the notch, and the cover 5 and the partition are in clamping connection with each other, so that the surface of the backrest 1 is more beautiful as a whole.

[0037] The back height assembly 3 further comprises a limiting screw 37. The limiting screw 37 is arranged on either side of the backrest position hole 35, and the limiting screw 37 is in fixed connection with the adjusting pipe 32. The partition is provided with a limiting groove 36 on the same side as the limiting screw 37. The limiting groove 36 and the second sliding groove 33 are in communication with each other. The limiting screw 37 is located in the limiting groove 36. When the limiting screw 37 abuts against the side wall of the limiting groove 36, the movement of the adjusting pipe 32 is limited. In this embodiment, the limiting groove 36 is arranged on the lower side of the backrest position hole 35.

[0038] The back height assembly 3 further comprises a fastening screw 38. The adjusting pipe 32 is provided with a fastening hole, and the fastening screw 38 is in fixed connection with the backrest 1 and the adjusting pipe 32 through the fastening hole. The fastening screw 38 can be selectively arranged on the adjusting pipe 32 to limit the movement of the adjusting pipe 32. In another possible embodiment, if the lunch chair does not need to have the function of moving the backrest, the backrest positioning bead 34 and the backrest position hole 35 can not be selected to be arranged, and the fastening screw 38 is installed to lock the relative position between the adjusting sleeve 31 and the adjusting pipe 32.

[0039] The foot pad assembly 6 further comprises a foot pad 61, an adapter sleeve 62, a first telescopic pipe 63 and a second telescopic pipe 64. The second telescopic pipe 64 is symmetrically arranged on the lower side of the base 4. The lower side of the second telescopic pipe 64 is in fixed connection with the upper end of the supporting foot 65. The first telescopic pipe 63 is embedded in the second telescopic pipe 64, and the first telescopic pipe 63 and the second telescopic pipe 64 are in sliding connection. One end of the first telescopic pipe 63 is in fixed connection with one end of the adapter sleeve 62. The other end of the adapter sleeve 62 is in rotational connection with the side wall of the foot pad 61, so that the foot pad 61 can be flipped relative to the first telescopic pipe 63.

[0040] In this embodiment, when the foot pad assembly 6 is not used, as shown in Figure 1 and Figure 9 the foot pad 61 is hidden on the lower side of the base 4; when the user needs to take a nap, the foot pad assembly 6 can be used to lie flat on the nap chair; first, the first telescopic pipe 63 is pulled out of the second telescopic pipe 64, adjusted to the appropriate position, the foot pad 61 is turned to the front, and then the backrest 1 is adjusted backward, so that the backrest 1 and the base 4 form an obtuse angle. By setting the foot pad assembly 6, the user can lie flat on the nap chair during the nap, the feet can be supported, and the user experience can be improved. It should be noted that a limiting device is arranged between the first telescopic pipe 63 and the second telescopic pipe 64 to limit the maximum displacement of the first telescopic pipe 63, which is a conventional technical means, and the specific connection relationship and working principle will not be described here.

[0041] The bottom end of the adjusting pipe 32 is rotationally connected with the base 4 to adjust the relative angle between the backrest 1 and the base 4. As shown in Figure 10 each support leg 65 includes a vertical rod and a horizontal rod; the ends of the horizontal rod are sleeved with a foot cover, and the lower end of the foot cover is provided with a pulley. By setting the pulley at the bottom of the device, the handle 27 at the back of the backrest 1 is matched, so that the nap chair can be directly pulled for position movement. A plurality of air holes are formed on the backrest 1.

Claims

1. A posture-adjustable lunch chair, a backrest (1) is arranged on the upper side of a base (4), characterized in that: The headrest assembly (2) further comprises a handle (27); at least one threaded hole (26) is formed on the slide plate (22), and the threaded hole (26) is located on the outer side of the backrest (1); one end of the handle (27) is embedded on the outer side of the slide plate (22), and the one end of the handle (27) is provided with a through hole coaxial with the threaded hole (26); the handle (27) and the threaded hole (26) are threadedly connected through the mounting bolt.

2. The sit-to-stand chair of claim 1, wherein: The plurality of headrest position holes (25) are equidistantly distributed on the backrest (1).

3. The adjustable-attitude nap chair of claim 1, wherein: The back height assembly (3) comprises an adjusting sleeve (31) and an adjusting pipe (32); the adjusting sleeve (31) is symmetrically arranged on the rear side of the backrest (1), the adjusting sleeve (31) protrudes outward, and the adjusting sleeve (31) is internally provided with a through second sliding groove (33); the adjusting pipe (32) is slidably connected with the second sliding groove (33); the front side of the adjusting sleeve (31) is provided with a notch embedded in the backrest (1), and the notch and the second sliding groove (33) are separated by a partition plate; the partition plate is fixedly provided with a backrest positioning bead (34), and the backrest positioning bead (34) is provided with a spherical protrusion on the side facing the second sliding groove (33); the adjusting sleeve (31) is provided with a plurality of backrest position holes (35) on the side facing the backrest positioning bead (34), and the backrest positioning bead (34) is embedded in the backrest position hole (35).

4. The sit-to-stand chair of claim 1, wherein: The back height assembly (3) further comprises a cover (5); the cover (5) covers the surface of the notch, and the cover (5) and the partition plate are clamped with each other.

5. A sit-to-stand chair as claimed in claim 4, characterized in that: The back height assembly (3) further comprises a limiting screw (37); the limiting screw (37) is arranged on any one side of the backrest position hole (35), and the limiting screw (37) is fixedly connected with the adjusting pipe (32); the partition plate is provided with a limiting groove (36) on the same side as the limiting screw (37); the limiting groove (36) and the second sliding groove (33) are mutually through; the limiting screw (37) is located in the limiting groove (36), and when the limiting screw (37) abuts against the side wall of the limiting groove (36), the movement of the adjusting pipe (32) is limited.

6. The reclining chair of claim 4 wherein: The back height assembly (3) further comprises a fastening screw (38); the adjusting pipe (32) is provided with a fastening hole, and the fastening screw (38) is fixedly connected with the backrest (1) and the adjusting pipe (32) through the fastening hole; the fastening screw (38) can be selectively arranged on the adjusting pipe (32) to limit the movement of the adjusting pipe (32).

7. The sit-to-stand chair of claim 4, wherein: ​ 8. The sit-to-stand chair of claim 4, wherein: The bottom end of the adjusting pipe (32) is rotationally connected with the base (4) to adjust the relative angle between the backrest (1) and the base (4).

9. The sit-to-stand chair of claim 1, wherein: The foot pad assembly (6) comprises a foot pad (61), an adapter sleeve (62), a first telescopic pipe (63) and a second telescopic pipe (64). The second telescopic pipe (64) is symmetrically arranged on the lower side of the base (4), and the lower side of the second telescopic pipe (64) is fixedly connected with the upper end of the supporting leg (65). The first telescopic pipe (63) is embedded in the second telescopic pipe (64), and the first telescopic pipe (63) is slidingly connected with the second telescopic pipe (64). One end of the first telescopic pipe (63) is fixedly connected with one end of the adapter sleeve (62), and the other end of the adapter sleeve (62) is rotationally connected with the side wall of the foot pad (61), so that the foot pad (61) can be flipped relative to the first telescopic pipe (63).

10. The sit-to-stand chair of claim 9, wherein: The supporting leg (65) is fixedly provided with a pulley at the lower end.

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