Adjustable headrest

Abstract

The utility model relates to the field of headrests, in particular to an adjustable headrest, which comprises a mounting seat and a headrest, a headrest adjusting component is rotatably arranged on the mounting seat, one end, far away from the mounting seat, of the headrest adjusting component is arranged in the headrest in a liftable manner, and the headrest adjusting component comprises a headrest angle adjusting part with one end rotatably connected with the mounting seat. The other end of the headrest angle adjusting piece is rotationally connected with a headrest lifting adjusting piece, one end of the mounting base is a rotating part rotationally connected with the headrest angle adjusting piece, the other end of the mounting base is a height adjusting part connected with the chair back in a lifting mode, and adjusting teeth are arranged on the rotating part; the end, facing the rotating part, of the headrest angle adjusting piece is provided with at least three angle adjusting grooves which are meshed and positioned with the adjusting teeth to achieve upper, middle and lower angle adjustment, a lifting adjusting groove is formed in the headrest, and the headrest lifting adjusting piece can be meshed and lifted in the lifting adjusting groove. The utility model has the beneficial effects that the angle is convenient to adjust, the chair can be overturned up, middle and down, the limiting is realized, the chair can move up and down at the chair back, and the disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of headrests, in particular to an adjustable headrest. Background Art

[0002] The headrest is an auxiliary device designed to improve comfort and safety. The emergence of the headrest has greatly facilitated our daily life. By fixing the headrest on the seat, it is convenient to protect our neck and reduce the probability of neck diseases.

[0003] The existing utility model patent with application number CN202321870677.1 discloses an angle-adjustable headrest, which includes a headrest, a fixing seat, a snap ring, a button, a mounting plate, a slot, a fixing plate, a spiral button, a sleeve and a support frame. The fixing plate is provided with slots on both sides, and a spiral hole is provided on the fixing plate. The fixing plate is fixedly connected to the support frame through the spiral hole and the spiral button, and a sleeve is tightly installed between the fixing plate and the support frame, and the mounting plate is fixedly connected to the support frame; the mounting plate is fixedly connected to the fixing seat, and the fixing seat is located between the mounting plate and the headrest; the fixing seat is fixedly connected to the snap ring, which is rotatably connected to one end of the support frame; the device separates the spiral button from the fixing plate by rotating the spiral button, and then the support frame can be rotated. The angle of the headrest can be adjusted by rotating the support foot, which is convenient for the user to adjust the required angle according to his own needs, which not only improves the practicality of the device, but also improves the comfort of using the device.

[0004] However, the headrest of this application can only adjust the angle but not the overall height of the headrest on the backrest. At the same time, the headrest needs to be adjusted in angle first and then the screw knob is tightened. It cannot be directly limited after adjustment, and the adjustment steps are relatively cumbersome. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a headrest which is easy to adjust the angle, can be turned up, middle and down and limited, can move up and down on the chair back and is easy to assemble and disassemble in view of the above-mentioned deficiencies in the prior art.

[0006] To achieve the above-mentioned purpose, the following technical solution is adopted: an adjustable headrest, comprising a mounting seat and a headrest, wherein the mounting seat is rotatably provided with a headrest adjustment assembly, and one end of the headrest adjustment assembly away from the mounting seat can be lifted and lowered in the headrest, wherein the headrest adjustment assembly includes a headrest angle adjustment member rotatably connected to the mounting seat at one end, and the other end of the headrest angle adjustment member is rotatably connected to the headrest lifting adjustment member. One end of the mounting seat is a rotating part rotatably connected to the headrest angle adjustment member, and the other end is a height adjustment part connected to the seat back for lifting and lowering. The rotating part is provided with adjustment teeth, and the headrest angle adjustment member is provided with at least three angle adjustment grooves facing one end of the rotating part, which are respectively engaged with the adjustment teeth to realize upper, middle and lower angle adjustment. A lifting adjustment groove is provided in the headrest, and the headrest lifting adjustment member can be engaged and lifted in the lifting adjustment groove.

[0007] By adopting the above technical solution, since the length of each person's neck is different, the headrest lifting adjustment member is raised and lowered in the lifting adjustment slot to adapt to people with different neck lengths, thereby achieving a more vertical neck support. At the same time, the headrest lifting adjustment member does not affect its rotation to adapt to the neck, and has a higher adaptability to the neck. The headrest angle adjustment component is provided with three-level angle adjustment slots or a single adjustment tooth, and the mounting seat is provided with a single adjustment tooth or three-level angle adjustment slots. The engagement angle of the headrest angle adjustment component and the mounting seat is adjusted. When the adjustment block is in the lowest angle adjustment slot, the headrest is lifted up. When the adjustment block is in the middle angle adjustment slot, the headrest is laid flat. When the adjustment block is in the highest angle adjustment slot, the headrest is lifted down. There is no need to use an additional knob for fixing. The angle adjustment slot can give the adjustment block a sense of resistance during adjustment, which will not cause it to be unable to position after adjustment. At the same time, the adjustment block and the angle adjustment slot both use arc edges to prevent it from being unable to adjust.

[0008] An adjustable headrest can be further configured as follows: a rotating seat is provided on the rotating part, arc-shaped grooves are opened on both sides of the top of the rotating seat, and an adjustment block with adjustment teeth on the top is detachably provided in the arc-shaped groove; the headrest angle adjustment member includes a first adjustment block and a second adjustment block that are plugged into and limited by each other, and the angle adjustment grooves are respectively provided at one end of the first adjustment block and the second adjustment block facing the arc-shaped groove.

[0009] Using the above technical solution, the shapes of the first adjustment block and the second adjustment block are similar to the handles of doors and windows, one end of which is an arc and is provided with an angle adjustment groove, and the arc groove is for the first adjustment block and the second adjustment block to rotate, and a groove is also provided in the arc groove. The adjustment block is also detachably set in the groove by a bolt. Since the adjustment teeth are provided on the top, when the first adjustment block and the second adjustment block are rotated, the angle adjustment groove and the adjustment teeth can be used to achieve the upper, middle and lower headrest angle adjustment, and the two can achieve synchronous angle adjustment by mutual plug-in limit.

[0010] An adjustable headrest can be further configured as follows: the rotating seat is provided with a rotating groove in a direction perpendicular to the arc groove, the first adjustment block and the second adjustment block are provided with protrusions with semicircular plugs extending into the rotating groove, and the planes of the semicircular plugs on the first adjustment block and the second adjustment block abut against each other to achieve synchronous angle adjustment.

[0011] Using the above technical solution, the shapes of the first adjustment block and the second adjustment block are similar to the handles of doors and windows, one end of which is an arc and has an angle adjustment groove. The first adjustment block and the second adjustment block are also provided with a semicircular plug-in block similar to the handle shaft in the vertical direction of the arc groove, and the two semicircular plug-in blocks are limited by mutual insertion of their planes to achieve limiting and synchronous angle adjustment. When the first adjustment block rotates, it will also drive the rotation of the second adjustment block. At the same time, the mutual insertion of the two can also facilitate the disassembly of the first adjustment block and the second adjustment block.

[0012] An adjustable headrest can be further configured as follows: the lifting adjustment groove is arranged in the vertical direction of the middle part of the headrest, and a plurality of lifting teeth are arranged vertically in the lifting adjustment groove, and the lifting teeth engage with the headrest lifting adjustment member to realize lifting adjustment.

[0013] By adopting the above technical solution, a vertical bar is set in the middle of the headrest, and lifting adjustment slots are set on both sides of the vertical bar. The headrest lifting adjustment part realizes adaptive adjustment to necks of different lengths by engaging the lifting teeth in the middle and the lifting adjustment slots.

[0014] An adjustable headrest can be further configured as follows: the headrest lifting adjustment member is I-shaped, the middle portion is engaged with the lifting teeth for lifting connection, and the two ends are respectively rotatably connected to the first adjustment block and the second adjustment block to realize the rotation of the headrest.

[0015] With the above technical solution, since the headrest lifting adjustment member is I-shaped, the middle part is limited to a certain height by the adjustment teeth of the lifting adjustment groove, and the two ends are respectively connected to the first adjustment block and the second adjustment block for rotation, thereby driving the entire headrest to rotate, so that the height of the headrest can be limited while also being able to rotate.

[0016] An adjustable headrest can be further configured as follows: a seat back fixing piece is provided on the height adjustment portion which can be raised and lowered, a height adjustment slot is vertically provided on the mounting seat, height adjustment teeth are provided in the mounting seat on the left and right sides of the height adjustment slot, and the seat back fixing piece extends from the height adjustment slot and engages with the height adjustment teeth to achieve height adjustment.

[0017] Using the above technical solution, the shape of the chair back fixing part is also similar to an I-shape, one end of which extends into the height adjustment groove, and the other end is fixedly connected to the chair back. The end extending into the height adjustment groove engages with the height adjustment teeth at both ends to achieve height adjustment, thereby realizing the first adjustment block and the second adjustment block driving the height adjustment of the entire headrest.

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of an embodiment of the present utility model.

[0020] Figure 2 For the embodiment of the utility model Figure 1 Schematic diagram of the explosion structure.

[0021] Figure 3 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the middle mounting seat.

[0022] Figure 4 For the embodiment of the utility model Figure 2 Schematic diagram of the structure of the second adjustment block.

[0023] Figure 5 For the embodiment of the utility model Figure 1 main view.

[0024] Figure 6 For the embodiment of the utility model Figure 5 AA section view.

[0025] Figure 7 For the embodiment of the utility model Figure 6 Magnified view of part A.

[0026] Figure 8 For the embodiment of the utility model Figure 5 BB cross-sectional view.

[0027] In the figure: 1. Mounting seat; 2. Headrest; 3. Headrest adjustment assembly; 11. Rotating portion; 12. Height adjustment portion; 13. Arc groove; 14. Adjusting teeth; 15. Angle adjustment groove; 16. Lifting adjustment groove; 17. Lifting teeth; 18. Limiting block; 31. Headrest angle adjustment member; 32. Headrest lifting adjustment member; 111. Rotating seat; 121. Rotating groove; 122. Chair back fixing member; 123. Height adjustment groove; 124. Height adjustment teeth; 311. First adjustment block; 312. Second adjustment block; 313. Semicircular plug block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the protection examples of the present invention.

[0029] Example: Figures 1-8 The adjustable headrest shown in the figure includes a mounting base 1 and a headrest 2, wherein a headrest adjustment component 3 is rotatably provided on the mounting base 1, and the end of the headrest adjustment component 3 away from the mounting base 1 can be lifted and lowered in the headrest 2, and the headrest adjustment component 3 includes a headrest angle adjustment member 31 rotatably connected to the mounting base 1 at one end, and a headrest lifting adjustment member 32 rotatably connected to the other end of the headrest angle adjustment member 31. Figure 3 The headrest 1 is provided with a plurality of adjusting teeth 14 on the top of the headrest 11, and the adjusting teeth 14 are provided on the adjusting teeth 14. The headrest 1 is provided with a plurality of adjusting teeth 14 on the top of the headrest 11, and the adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. The adjusting teeth 14 are provided on the adjusting teeth 14. Figure 7 As shown, the headrest angle adjustment component 31 is provided with an angle adjustment slot 15 with three gears of upper, middle and lower or a single adjustment tooth 14, and the mounting seat 1 is provided with a single adjustment tooth 14 or an angle adjustment slot 15 with three gears of upper, middle and lower so as to achieve the meshing angle adjustment of the headrest angle adjustment component 31 and the mounting seat 1. When the adjustment tooth 14 is in the lowest angle adjustment slot 15, the headrest 2 is lifted up; when the adjustment tooth 14 is in the middle angle adjustment slot 15, the headrest 2 is laid flat; when the adjustment tooth 14 is in the highest angle adjustment slot 15, the headrest 2 is lifted down, and no additional knob is needed for fixing. The angle adjustment slot 15 can give the adjustment tooth 14 a sense of resistance during adjustment, which will not cause the adjustment to be unable to be positioned. At the same time, the adjustment tooth 14 and the angle adjustment slot 15 both adopt arc edges to prevent inability to adjust. Figure 8As shown, the lifting adjustment slot 16 is provided in the vertical direction of the middle part of the headrest 2, and a plurality of lifting teeth 17 are arranged vertically in the lifting adjustment slot 16. The lifting teeth 17 are engaged with the headrest lifting adjustment member 32 to realize lifting adjustment. The headrest angle adjustment member 31 includes a first adjustment block 311 and a second adjustment block 312 that are plugged into and limited to each other. The headrest lifting adjustment member 32 is I-shaped, the middle part of which is engaged with the lifting teeth 17 for lifting connection, and the two ends are respectively rotatably connected with the first adjustment block 311 and the second adjustment block 312 to realize the rotation of the headrest 1. A limit block 18 with an adjusting tooth 14 on the top is detachably provided in the arc groove 13. The angle adjustment slots 15 are respectively provided with the first adjustment block 311 and the second adjustment block 312 facing one end of the arc groove 13. The rotating seat 111 is provided in the A rotation groove 121 is provided in the vertical direction of the arc-shaped groove 13, and a semicircular plug 313 is provided on the protrusions of the first adjustment block 311 and the second adjustment block 312, which extends into the rotation groove 121. In fact, in order to facilitate disassembly and enable the first adjustment block 311 and the second adjustment block 312 to rotate synchronously, the planes of the semicircular plug 313 on the first adjustment block 311 and the second adjustment block 312 abut against each other and realize synchronous angle adjustment. The height adjustment part 12 is provided with a chair back fixing part 122 which can be raised and lowered, and a height adjustment groove 123 is vertically provided on the mounting seat 1. The mounting seat 1 is provided with height adjustment teeth 124 on the left and right sides of the height adjustment groove 123. The chair back fixing part 122 extends from the height adjustment groove 123 and engages with the height adjustment teeth 124 to realize height adjustment.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An adjustable headrest, comprising a mounting seat (1) and a headrest (2), wherein a headrest adjustment assembly (3) is rotatably provided on the mounting seat (1), and an end of the headrest adjustment assembly (3) away from the mounting seat (1) can be raised and lowered in the headrest (2), characterized in that: The headrest adjustment assembly (3) comprises a headrest angle adjustment member (31) rotatably connected to the mounting seat (1) at one end, and a headrest lifting adjustment member (32) rotatably connected to the headrest angle adjustment member (31) at the other end. The mounting seat (1) has a rotating portion (11) rotatably connected to the headrest angle adjustment member (31) at one end, and a height adjustment portion (12) connected to the seat back in a liftable manner at the other end. The rotating portion (11) is provided with an adjustment tooth (124). The headrest angle adjustment member (31) is provided with at least three angle adjustment slots (15) facing one end of the rotating portion (11) and respectively engaged with the adjustment tooth (124) to achieve upper, middle and lower angle adjustment. A lifting adjustment slot (16) is provided in the headrest (2), and the headrest lifting adjustment member (32) can be engaged and lifted in the lifting adjustment slot (16).

2. The adjustable headrest according to claim 1, characterized in that: The rotating portion (11) is provided with a rotating seat (111), and arc-shaped grooves (13) are provided on both sides of the top of the rotating seat (111). A limit block (18) with an adjustment tooth (124) on the top is detachably provided in the arc-shaped groove (13). The headrest angle adjustment member (31) comprises a first adjustment block (311) and a second adjustment block (312) that are plugged into and limited by each other. The angle adjustment grooves (15) are respectively provided at one end of the first adjustment block (311) and the second adjustment block (312) facing the arc-shaped groove (13).

3. The adjustable headrest according to claim 2, characterized in that: The rotating seat (111) is provided with a rotating groove (121) in a vertical direction of the arc groove (13); the first adjusting block (311) and the second adjusting block (312) are provided with a semicircular plug block (313) protruding into the rotating groove (121); the planes of the semicircular plug block (313) on the first adjusting block (311) and the second adjusting block (312) abut against each other to achieve synchronous angle adjustment.

4. An adjustable headrest according to claim 1, 2 or 3, characterized in that: The lifting adjustment groove (16) is arranged in the vertical direction in the middle of the headrest (2), and a plurality of lifting teeth (17) are arranged vertically in the lifting adjustment groove (16). The lifting teeth (17) are engaged with the headrest lifting adjustment member (32) to realize lifting adjustment.

5. The adjustable headrest according to claim 4, characterized in that: The headrest lifting adjustment member (32) is I-shaped, with its middle portion meshing with the lifting teeth (17) for lifting connection, and its two ends respectively rotatably connected to the first adjustment block (311) and the second adjustment block (312) to realize the rotation of the headrest (2).

6. The adjustable headrest according to claim 1, characterized in that: The height adjustment portion (12) is provided with a chair back fixing piece (122) which can be raised and lowered, the mounting seat (1) is vertically provided with a height adjustment slot (123), the mounting seat (1) is provided with height adjustment teeth (124) located on the left and right sides of the height adjustment slot (123), and the chair back fixing piece (122) extends from the height adjustment slot (123) and engages with the height adjustment teeth (124) to achieve height adjustment.

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