CN216702075U

CN216702075U - Chair backrest with rotatable headrest

Info

Publication number: CN216702075U
Application number: CN202122538232.0U
Authority: CN
Inventors: 张久智
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-06-10
Anticipated expiration: 2031-10-21

Abstract

The utility model relates to a chair backrest with a headrest, in particular to a chair backrest with a rotatable headrest. The chair backrest with the rotatable headrest comprises the headrest (1) and a chair back (2), and is characterized by further comprising a rotary connecting support (3) and a rotary connecting support mounting seat (4), wherein the lower end of the rotary connecting support (3) is fixedly mounted on the chair back (2) through the rotary connecting support mounting seat (4), and the upper end of the rotary connecting support (3) is fixedly mounted with the headrest (1). By adopting the structure, when the telescopic rod (37) stretches and contracts, the headrest (1) rotates up and down along the rotary rod (35).

Description

Chair backrest with rotatable headrest

Technical Field

The utility model relates to a chair backrest with a headrest, in particular to a chair backrest with a rotatable headrest.

Background

Chairs are ubiquitous in our lives, work, and leisure. The most common daily chair consists of a chair back, a seat and chair legs. Slowly, various industries have made chairs of different kinds, functions, shapes for their respective industrial purposes.

For the comfort of leaning and sitting, various human body designs are carried out on all parts of the chair. The chair back is the part with the most design patterns, and is added with a headrest design element besides the design of the shape and the curve. The headrest is generally fixed with the chair back, but in order to meet the requirements of different industries and different people, the headrest is not fixed with the chair back. Most often, the headrest is retractable up and down, and there are special needs, such as left and right movement of the headrest.

The above-described headrest design suffers from a significant drawback. The design angle of the headrest and the chair back is designed according to the height and the human body proportion of a common person. Therefore, after a user sits on many chairs with headrests, the user feels uncomfortable when sitting on the chairs with the headrests due to problems of height, proportion or sitting postures, and the discomfort cannot be solved by adjusting the headrests up and down or left and right.

SUMMERY OF THE UTILITY MODEL

The technical scheme to be solved by the utility model is to provide the chair backrest with the rotatable headrest, so that the individual can adjust the headrest angle which is most comfortable according to the factors such as the height, the body proportion, the sitting posture and the like of the individual.

The utility model provides a chair backrest capable of rotating a headrest, which comprises the headrest and a chair back and is characterized by further comprising a rotary connecting support and a rotary connecting support mounting seat, wherein the lower end of the rotary connecting support is fixedly mounted on the chair back through the rotary connecting support mounting seat, and the upper end of the rotary connecting support is fixedly mounted with the headrest.

The chair backrest of rotatable headrest, its characterized in that: the rotary connecting bracket comprises a headrest mounting seat, a chair back mounting seat, a track block, a rotating wheel, a rotating rod, a motor, a telescopic rod and a telescopic rod gasket; the headrest mounting seat is fixedly mounted on the headrest, and the chair back mounting seat is fixedly mounted on the chair back; the rotating wheel is provided with a rotating wheel through hole, and the rotating rod penetrates through the rotating wheel through hole, is fixedly connected with the chair back mounting seat and is movably connected with the headrest mounting seat; the track block is fixedly arranged in the headrest mounting seat; the lower end of the telescopic rod is provided with a motor, and the upper end of the telescopic rod is movably connected with the headrest mounting seat; the telescopic rod gasket is arranged in the middle of the chair back and the upper end of the telescopic rod and is fixedly connected with the chair back mounting seat.

The chair backrest of rotatable headrest, its characterized in that: the chair back mounting seat is provided with a chair back connecting hole, the rotating rod is non-cylindrical, and the shape of the rotating wheel through hole and the shape of the chair back connecting hole are matched with the shape of the rotating rod; a headrest connecting circular hole is arranged on the headrest mounting seat; the headrest mounting seat is sleeved on the rotating wheel through a headrest connecting circular hole, and the rotating rod firstly penetrates through the rotating wheel through hole and secondly penetrates through the chair back connecting hole.

The chair backrest of rotatable headrest, its characterized in that: the headrest mount pad is two stationary blades of shape and structural symmetry, still include track piece connecting hole I on it, track piece connecting hole II, track piece is last to have track piece round hole I, track piece round hole II, the track piece is placed with two stationary blades in the middle of, and make it and mount pad fixed connection through track piece round hole I, track piece round hole II and track piece connecting hole I, track piece connecting hole II, the track piece bottom surface is the slope, the slope both ends are the cambered surface rather than the looks proximal surface junction.

The chair backrest of rotatable headrest, its characterized in that: the upper end of the telescopic rod is provided with a telescopic rod round hole, the headrest mounting seat also comprises a telescopic rod connecting hole, and the telescopic rod is movably connected with the headrest mounting seat through the telescopic rod round hole and the telescopic rod connecting hole by the screw rod; the back of the chair mount pad is two stationary blades of shape and structural symmetry, and the back of the chair mount pad still includes gasket connecting hole I and gasket connecting hole II, is equipped with gasket round hole I and gasket round hole II on the telescopic link gasket, and the screw rod passes through gasket connecting hole I, gasket connecting hole II and gasket round hole I, gasket round hole II makes telescopic link gasket and back of the chair mount pad fixed connection.

The chair backrest of rotatable headrest, its characterized in that: the middle of the outer surface of the rotating wheel protrudes, and the thickness of the protruding part, the thickness of the track block and the thickness of the top end of the telescopic rod are consistent.

The chair backrest of rotatable headrest, its characterized in that: the surface of a middle protruding part 1/4 on the outer surface of the rotating wheel is in a sawtooth shape, the shapes of two sides of the outer surface are matched with the shape of a headrest connecting circular hole, and the headrest mounting seat is sleeved on the rotating wheel through the headrest connecting circular hole.

The chair backrest of rotatable headrest, its characterized in that: the end of the sawtooth shape of the middle protruding surface of the outer surface of the rotating wheel is also provided with a limit block.

The chair backrest of rotatable headrest, its characterized in that: the rotating rod is an expansion screw rod, and the shape of the rotating rod is a hexagonal prism.

The chair backrest of rotatable headrest, its characterized in that: the headrest mounting seat also comprises a protruding buckle at the tail end, and the top end of the telescopic rod gasket is mounted at the buckle.

By adopting the structure, under the action of the motor, when the telescopic rod moves to extend, the top of the telescopic rod applies an upward force to the slope of the track block, the top end of the telescopic rod slowly moves along the slope of the track block, the whole headrest rotates to move downwards around the rotary rod, and the downward movement is carried out until the motor stops artificially or the track block moves in reverse time until the limit block limits the movement; when the telescopic rod does the rod retracting movement, the telescopic rod moves back, the whole headrest rotates upwards around the rotary rod, and the upwards movement is carried out until the human motor stops or the track block moves to the limiting block for limiting movement in the same time. Thereby achieving the headrest rotation adjustment.

Drawings

FIG. 1: the utility model discloses a structural schematic diagram of a chair backrest with a rotatable headrest.

FIG. 2: the structure of the rotary connecting bracket is schematically shown.

FIG. 3: the utility model relates to an explosion diagram of a rotary connecting bracket.

Detailed Description

The backrest of a chair with a rotatable headrest according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

As shown in fig. 1, 2 and 3, the chair back rest with a rotatable headrest of the utility model comprises a headrest 1, a chair back 2, a rotary connecting bracket 3 and a rotary connecting bracket mounting seat 4, wherein the lower end of the rotary connecting bracket 3 is fixedly mounted on the chair back 2 through the rotary connecting bracket mounting seat 4, and the upper end of the rotary connecting bracket 3 is fixedly mounted with the headrest 1.

The rotary connecting bracket 3 comprises a headrest mounting seat 31, a chair back mounting seat 32, a track block 33, a rotary wheel 34, a rotary rod 35, a motor 36, a telescopic rod 37 and a telescopic rod gasket 38. The headrest mounting seat 31 is fixedly mounted on the headrest 1, and the chair back mounting seat 32 is fixedly mounted on the chair back 2.

The rotating wheel 34 has a rotating wheel through hole 3401, the rotating rod 35 is non-cylindrical, the seat back mounting seat 32 is provided with a seat back connecting hole 3201, and the shape of the rotating wheel through hole 3401 and the seat back connecting hole 3201 matches with the shape of the rotating rod 35. The rotating rod 35 penetrates the rotating wheel through hole 3401 and is fixedly connected with the chair back mounting seat 32.

The headrest mounting seat 31 is provided with a headrest connecting round hole 3101, and the headrest mounting seat 31 is sleeved on the rotating wheel 34 through the headrest connecting round hole 3101, so that the rotating wheel 34 and the headrest mounting seat 31 are movably connected in a sleeved mode. The rotating rod 35 firstly passes through the rotating wheel through hole 3401 and secondly passes through the seat back connecting hole 3201.

The headrest mounting seat 31 is composed of two fixing pieces with symmetrical shapes and structures, and further comprises a track piece connecting hole I3102 and a track piece connecting hole II 3103, wherein the track piece 33 is provided with a track piece round hole I3301 and a track piece round hole II 3302, the track piece 33 is placed between the two fixing pieces and is fixedly connected with the inside of the mounting seat 31 through the track piece round hole I3301, the track piece round hole II 3302, the track piece connecting hole I3102 and the track piece connecting hole II 3103, the bottom surface of the track piece 33 is a slope surface, and the joint of the two ends of the slope surface and the adjacent surface of the slope surface is an arc surface. The lower end of the telescopic rod 37 is provided with a motor 36, and the telescopic rod moves along the slope no matter the telescopic rod does rod extending movement or rod retracting movement, so that the angle of the slope determines the rotation angle of the headrest.

The upper end of the telescopic rod 37 is provided with a telescopic rod round hole 3701, the headrest mounting seat 31 further comprises a telescopic rod connecting hole 3104, and the upper end of the telescopic rod 37 is movably connected with the headrest mounting seat 31 through the telescopic rod round hole 3701 and the telescopic rod connecting hole 3104 by the screw rod. The seat back mounting seat 32 is two fixing pieces with symmetrical shapes and structures, and the seat back mounting seat 32 further comprises a gasket connecting hole I3202 and a gasket connecting hole II 3203. The telescopic rod pad 38 is disposed between the upper ends of the seat back 2 and the telescopic rod 37, the headrest mounting seat 31 further includes a protruding buckle 3105 at the end, and the top end of the telescopic rod pad 38 is mounted at the buckle 3105. Be equipped with pad round hole I3801 and pad round hole II 3802 on the telescopic link gasket 38, the screw rod makes telescopic link gasket 38 and back of the chair mount pad 32 fixed connection through pad connecting hole I3202, pad connecting hole II 3203 and pad round hole I3801, pad round hole II 3802.

The middle of the outer surface of the rotating wheel 34 protrudes, and the thickness of the protruding part, the thickness of the track block 33 and the thickness of the top end of the telescopic rod 37 are consistent. So that the rail block 33 fixed on the headrest mounting seat 31, the movably connected telescopic rod 37 and the rail block 33 are on the same vertical line when the telescopic rod 37 moves up and down.

The middle protruding part 1/4 of the outer surface of the rotation wheel 34 is serrated, and the end thereof is further provided with a stopper 3402. The limiting block 3402 is used for limiting the maximum rotation angle of the headrest 1, and the serrated surface is used for increasing the friction coefficient during the rotation motion to prevent slipping. The shape of the two sides of the outer surface of the rotating wheel 34 is matched with the shape of the headrest connecting round hole 3101, and the headrest mounting seat 31 is sleeved on the rotating wheel 34 through the headrest connecting round hole 3101.

The rotating rod 35 is an expansion screw, and may be a hexagonal prism, a pentagonal prism, a triangular prism, or a trapezoidal column, but it is not necessarily a cylinder. The primary purpose of this is to allow the seat back mount 32 to be fixedly attached to the swivel wheel 34. If the rotating rod 35 is a common screw, nuts are added to both ends of the rotating rod 35, so that the rotating rod 35 does not fall off.

While the preferred embodiments or examples of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the embodiments or examples, and various changes can be made without departing from the spirit of the utility model within the knowledge of those skilled in the art.

Claims

1. But chair back of headrest, including headrest (1), back of the chair (2), its characterized in that still includes swivelling joint support (3), swivelling joint support mount pad (4), swivelling joint support (3) lower extreme passes through swivelling joint support mount pad (4) fixed mounting be in on the back of the chair (2), swivelling joint support (3) upper end and headrest (1) fixed mounting.

2. A rotatable headrest chair back as claimed in claim 1, wherein: the rotary connecting bracket (3) comprises a headrest mounting seat (31), a chair back mounting seat (32), a track block (33), a rotating wheel (34), a rotating rod (35), a motor (36), a telescopic rod (37) and a telescopic rod gasket (38); the headrest mounting seat (31) is fixedly mounted on the headrest (1), and the chair back mounting seat (32) is fixedly mounted on the chair back (2); the rotating wheel (34) is provided with a rotating wheel through hole (3401), and the rotating rod (35) penetrates through the rotating wheel through hole (3401), is fixedly connected with the chair back mounting seat (32) and is movably connected with the headrest mounting seat (31); the track block (33) is fixedly arranged in the headrest mounting seat (31); the lower end of the telescopic rod (37) is provided with a motor (36), and the upper end of the telescopic rod is movably connected with the headrest mounting seat (31); the telescopic rod gasket (38) is arranged between the chair back (2) and the upper end of the telescopic rod (37) and is fixedly connected with the chair back mounting seat (32).

3. A rotatable headrest chair back as claimed in claim 2, wherein: the chair back mounting seat (32) is provided with a chair back connecting hole (3201), the rotating rod (35) is non-cylindrical, and the shape of the rotating wheel through hole (3401) and the shape of the chair back connecting hole (3201) are matched with the shape of the rotating rod (35); a headrest connecting round hole (3101) is formed in the headrest mounting seat (31); the headrest mounting seat (31) is sleeved on the rotating wheel (34) through a headrest connecting round hole (3101), and the rotating rod (35) firstly penetrates through the rotating wheel through hole (3401) and secondly penetrates through a chair back connecting hole (3201).

4. A rotatable headrest chair back as claimed in claim 2, wherein: headrest mount pad (31) are two stationary blades of shape and structural symmetry, still include track piece connecting hole I (3102) on it, track piece connecting hole II (3103), track piece (33) are gone up track piece round hole I (3301), track piece round hole II (3302), track piece (33) are placed with two stationary blades in the middle of to through track piece round hole I (3301), track piece round hole II (3302) and track piece connecting hole I (3102), track piece connecting hole II (3103) make it with mount pad (31) fixed connection, track piece (33) bottom surface is the slope, and slope both ends are the cambered surface rather than adjacent face junction.

5. A rotatable headrest chair back as claimed in claim 2, wherein: the upper end of the telescopic rod (37) is provided with a telescopic rod round hole (3701), the headrest mounting seat (31) further comprises a telescopic rod connecting hole (3104), and the telescopic rod (37) is movably connected with the headrest mounting seat (31) through the telescopic rod round hole (3701) and the telescopic rod connecting hole (3104) by the screw rod; back of the chair mount pad (32) are two stationary blades of shape and structural symmetry, back of the chair mount pad (32) still includes gasket connecting hole I (3202) and gasket connecting hole II (3203), is equipped with gasket round hole I (3801) and gasket round hole II (3802) on telescopic link gasket (38), and the screw rod passes through gasket connecting hole I (3202), gasket connecting hole II (3203) and gasket round hole I (3801), gasket round hole II (3802) makes telescopic link gasket (38) with back of the chair mount pad (32) fixed connection.

6. A rotatable headrest chair back as claimed in claim 2, wherein: the middle of the outer surface of the rotating wheel (34) protrudes, and the thickness of the protruding part, the thickness of the track block (33) and the thickness of the top end of the telescopic rod (37) are consistent.

7. A rotatable headrest chair back as claimed in claim 3, wherein: the surface of a middle protruding part 1/4 of the outer surface of the rotating wheel (34) is in a sawtooth shape, the shapes of the two sides of the outer surface are matched with the shape of the headrest connecting round hole (3101), and the headrest mounting seat (31) is sleeved on the rotating wheel (34) through the headrest connecting round hole (3101).

8. The chair back of a rotatable headrest according to claim 2 or 6, wherein: the end of the middle protruding surface of the outer surface of the rotating wheel (34) is provided with a limiting block (3402).

9. The rotatable headrest chair back as claimed in claim 2, wherein: the rotating rod (35) is an expansion screw rod and is in a hexagonal prism shape.

10. A rotatable headrest chair back as claimed in claim 2, wherein: the end of the headrest mounting seat (31) also comprises a protruding buckle (3105), and the top end of the telescopic rod gasket (38) is mounted at the buckle (3105).