Chair headrest structure
By designing the multi-headrest structure and adjustment components, the problem that the existing chair headrests cannot adapt to different physiques and head shapes is solved, and a variety of support methods are realized, which improves the comfort and scope of application of the chair.
Patent Information
- Application Number
- CN202422590523.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The headrests of existing chairs cannot effectively adapt to the needs of people with different physiques and head shapes, especially when sitting and lying down, the support needs of the head and neck cannot be met.
A multi-head rest structure is designed, including a head rest bracket, an upper pillow, a lower pillow and an optional middle pillow. The upper pillow and the lower pillow are rotated and angled adjustments are achieved through the adjustment component. Combined with the lifter and the moving seat, a variety of support methods are provided.
It realizes multiple adjustment states of the headrest, adapts to the use needs of different groups of people, improves the comfort and scope of application, and meets the support needs of people with different physiques and head shapes.
Smart Images
Figure CN223126123U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a chair, in particular to a headrest structure of a chair. Background Art
[0002] Chairs are one of the most commonly used furniture in people's lives. Traditional chairs include a seat, chair legs, and a backrest. In order to improve comfort and better conform to ergonomics, modern ergonomic chairs will add a headrest at the top of the backrest to provide support for the human head or neck. The headrests of existing chairs are divided into fixed structures and liftable structures. The former is fixedly installed at the top of the backrest, and the latter installs a liftable adjustment rod on the backrest, and the headrest is then installed on the adjustment rod. In addition, the headrest is also installed on the backrest or the adjustment rod in a rotatable manner to provide support more accurately. However, even so, these headrests still cannot well adapt to people with different physiques and head shapes, and cannot meet the usage needs of users for different support methods. For chairs with a tiltable backrest, the headrest also cannot well cooperate with the different support needs of the head and neck in the sitting and lying postures. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a chair structure with multiple different headrests, so that the headrest can form more adjustment states, thereby forming a variety of support methods, improving the applicable range of the headrest, and better meeting the usage needs of different people.
[0004] The headrest structure of the chair described in the utility model includes a headrest bracket directly or indirectly installed on the backrest, and a headrest installed on the headrest bracket. The headrest includes a lower pillow installed on the headrest bracket, and an upper pillow rotatably installed at the upper end of the lower pillow.
[0005] Further, the lower pillow is fixedly or rotatably installed on the headrest bracket.
[0006] Further, the upper pillow is installed on the lower pillow through an adjustment component that can drive it to rotate; the adjustment component includes two connecting seats oppositely arranged on the lower pillow. One of the connecting seats is provided with a through hole, and a plurality of protruding and spaced tooth grooves are arranged along the circumferential direction in the through hole. A groove is opened at the position opposite to the through hole on the other connecting seat, and a threaded hole is provided in the groove. A rotating shaft is movably arranged in the through hole and the end can extend into the groove. A convex tooth cooperating with the tooth groove is arranged on the rotating shaft. The end of the upper pillow is arranged between the two connecting seats and is connected to the convex tooth of the rotating shaft through the tooth groove; an axial hole is opened along the axial direction on the rotating shaft, a compression spring is arranged in the axial hole, the end of a fixing screw passes through the compression spring and is screwed into the threaded hole, and the rotating shaft can move along the through hole and drive the convex tooth of the rotating shaft to disengage from the tooth groove of the connecting seat.
[0007] Further, a button is connected to the rotating shaft, with its end protruding out of the through hole of the connecting seat. The button drives the rotating shaft to move, causing the convex teeth of the rotating shaft to move into the upper pillow and disengage from the tooth grooves of the connecting seat.
[0008] Further, the headrest further includes one or more middle pillows disposed between the upper pillow and the lower pillow, and the upper pillow is mounted on the lower pillow through the middle pillow.
[0009] Further, there are two or more middle pillows, all the middle pillows are connected in sequence, and the middle pillows at both ends are respectively connected to the upper pillow and the lower pillow.
[0010] Further, the upper pillow is mounted on the middle pillow through an adjusting assembly capable of driving it to rotate; the adjusting assembly includes two connecting seats oppositely disposed on the middle pillow. One of the connecting seats is provided with a through hole, and a plurality of protruding and spaced tooth grooves are provided along the circumferential direction inside the through hole. A groove is formed at a position opposite to the through hole on the other connecting seat, and a screw hole is provided inside the groove. The rotating shaft is movably disposed inside the through hole, and its end can extend into the groove. Convex teeth cooperating with the tooth grooves are provided on the rotating shaft. The end of the upper pillow is disposed between the two connecting seats and is connected to the convex teeth of the rotating shaft through the tooth grooves; an axial hole is formed along the axis of the rotating shaft, a compression spring is provided inside the axial hole, and the end of the fixing screw passes through the compression spring and is screwed into the screw hole. The rotating shaft can move along the through hole and drive the convex teeth of the rotating shaft to disengage from the tooth grooves of the connecting seat.
[0011] Further, a button is connected to the rotating shaft, with its end protruding out of the through hole of the connecting seat. The button drives the rotating shaft to move, causing the convex teeth of the rotating shaft to move into the upper pillow and disengage from the tooth grooves of the connecting seat.
[0012] Further, there is a movable seat capable of moving back and forth, and a front-back adjusting mechanism for driving the movable seat to move back and forth. The headrest bracket is rotatably mounted on the movable seat.
[0013] Further, there is a lifter that can be installed on the backrest of the chair in a liftable manner, and the movable seat is installed on the lifter.
[0014] The headrest structure of the chair described in the present utility model has a headrest bracket installed on the backrest of the chair. Specifically, it can be fixedly installed, or movably installed on the top of the backrest through a lifting device such as an adjustment rod. The headrest is divided into an upper pillow and a lower pillow. The upper pillow is rotatably installed above the lower pillow. When in use, by rotating the upper pillow relative to the lower pillow, different usage requirements can be met. The upper pillow can be rotated to the rear of the lower pillow, and only the lower pillow is used to support the human head or neck, forming a usage effect similar to that of a traditional headrest. The upper pillow can also be rotated to the upper or obliquely rear position of the lower pillow, so that the curvature of the headrest or the contact area between the headrest and the user's head and neck changes, enabling the upper pillow and the lower pillow to support the human head simultaneously, or the lower pillow to support the human neck and the upper pillow to support the human head, thereby providing more different usage effects, meeting the user's needs for different support methods, and also meeting the usage needs of people with different physiques and head shapes (such as flat heads or round heads. Flat heads often hope for a larger and flatter contact surface of the headrest, while round heads hope for a larger curvature of the headrest to be more fitting). In addition, by rotating and adjusting the angle between the upper pillow and the lower pillow, when the user is sitting upright, the headrest can be adjusted to form a larger curvature, which is more fitting to the human head or neck. When the user is lying down, the headrest can be adjusted to form a smaller curvature or increase the contact area, so that the support effect is more comfortable. By rotating the upper pillow to change the curvature and contact area of the headrest, it can better adapt to the two states of sitting upright or lying down respectively.
[0015] When a middle pillow is provided between the upper pillow and the lower pillow, the upper pillow is rotatably installed above the middle pillow, and the middle pillow is rotatably installed above the lower pillow. When in use, by relatively rotating the upper pillow and the middle pillow, more support curves can be provided to better meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of the first embodiment of the chair headrest structure.
[0017] Figure 2 is Figure 1 a schematic diagram showing the upper pillow and the lower pillow of the chair headrest structure adjusted to different states.
[0018] Figure 3 is a schematic structural diagram of the connection structure of the upper pillow, the lower pillow and the headrest bracket.
[0019] Figure 4 、 5 is a schematic structural diagram of the adjustment component.
[0020] Figure 6 is a schematic structural diagram of the second embodiment of the chair headrest structure.
[0021] Figure 7 、 8 is a schematic structural diagram of the third embodiment of the chair headrest structure.
[0022] Figure 9 Yes Figure 7 Schematic diagram showing the upper pillow, middle pillow, and lower pillow of the chair headrest structure adjusted to different states.
[0023] Figure 10 It is a schematic structural diagram of the fourth embodiment of the chair headrest structure. Detailed implementation manners
[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.
[0026] If there are descriptions involving "first" or "second" in the embodiments of the present invention, then the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
[0027] Embodiment 1, as Figures 1-5 shown.
[0028] This embodiment provides a chair headrest structure, including a headrest bracket 1 directly or indirectly installed on the backrest, and a headrest installed on the headrest bracket; the headrest includes a lower pillow 3 installed on the headrest bracket, and an upper pillow 2 rotatably installed at the upper end of the lower pillow.
[0029] For the described chair headrest structure, the headrest bracket is installed on the backrest of the chair. Specifically, it can be fixedly installed, or movably installed on the top of the backrest through a lifting device such as an adjustment rod. The headrest is divided into an upper pillow and a lower pillow. By adjusting the positions of the upper pillow and the lower pillow, the curvature of the headrest can be changed, or the contact area between the headrest and the user's head and neck can be changed, forming more supporting states.
[0030] For the described chair headrest structure, the lower pillow 3 is rotatably installed on the headrest bracket 1, and the upper pillow 2 is installed on the lower pillow 3 through an adjustment assembly that can drive its rotation to facilitate the adjustment of the angle of the upper pillow. The described adjustment assembly includes two connecting seats 6 oppositely arranged on the lower pillow 3. One of the connecting seats is provided with a through hole, and a plurality of protruding and spaced tooth grooves 5 are arranged along the circumferential direction in the through hole. A groove is opened at the position opposite to the through hole on the other connecting seat, and a threaded hole 7 is provided in the groove. The rotating shaft 4 is movably arranged in the through hole, and the end portion can extend into the groove. A convex tooth 41 that cooperates with the tooth groove is arranged on the rotating shaft. The end portion of the upper pillow 2 is arranged between the two connecting seats and is connected to the convex tooth of the rotating shaft through the tooth groove. An axial hole is opened along the axis of the rotating shaft 4, and a compression spring 8 is arranged in the axial hole. The end portion of the fixing screw 9 passes through the compression spring and is screwed into the threaded hole. The rotating shaft can move along the through hole and drive the convex tooth of the rotating shaft to disengage from the tooth groove of the connecting seat, thereby releasing the locking of the upper pillow. The upper pillow can be adjusted to the required angle. After the adjustment is in place, the rotating shaft moves in the reverse direction to drive the convex tooth to re-insert into the tooth grooves of the upper and lower pillows for fixation. The end portion of the rotating shaft 4 protrudes from the through hole of the connecting seat 6 to facilitate pressing the rotating shaft. A button 10 with an end portion protruding from the through hole of the connecting seat 6 can also be connected to the rotating shaft 4. The button drives the rotating shaft to move and makes the convex tooth 41 of the rotating shaft move into the upper pillow 2 and disengage from the tooth groove 5 of the connecting seat, so that the upper pillow is disengaged from the lower pillow and the angle can be adjusted. At this time, the compression spring is compressed. After the upper pillow is adjusted in place, the button is released, and the rotating shaft is reset under the elastic force of the compression spring, and the convex tooth on it is fixed to the tooth grooves of the upper and lower pillows again to complete the adjustment.
[0031] For the described chair headrest structure, there is a movable seat 20 that can move back and forth, and a front-back adjustment mechanism for driving the movable seat to move back and forth. The headrest support 1 can be directly connected to the movable seat or rotatably mounted on the movable seat to form more adjustment states. There is also a lifter 30 that is liftably mounted on the backrest of the chair. The movable seat 20 is mounted on the lifter, enabling angle adjustment to cooperate with height adjustment to further increase the adjustable forms. Of course, the lifter and the movable seat can be directly connected or rotatably connected, and the headrest support can also be directly connected or rotatably mounted on the lifter or mounted on the backrest of the chair through a fixed support. The lifter can be adjusted for lifting in the vertical direction, and the movable seat can be adjusted back and forth in the horizontal direction. The axis of the hinge end between the rotating frame and the movable seat faces both sides, enabling the headrest support and the headrest thereon to be adjusted in angle. Thus, through the setting of multiple degrees of freedom, the headrest can be conveniently adjusted to different states to meet the usage needs of different people and improve the usage comfort of the chair.
[0032] Embodiment 2, as Figure 6 shown.
[0033] This embodiment proposes a chair headrest structure, in which the lower pillow 3 is fixedly mounted on the headrest support 1 to meet the adjustment needs.
[0034] Embodiment 3, as Figures 7-9 ; Embodiment 4, as Figure 10 shown.
[0035] This embodiment provides a chair headrest structure. The headrest further includes a middle pillow 21 disposed between the upper pillow 2 and the lower pillow 3. The upper pillow is mounted on the lower pillow through the middle pillow. By relatively rotating the upper pillow and the middle pillow, it can provide more support curves, making the overall arc of the headrest smoother. It can also provide more different supporting methods for different parts. For example, the middle pillow and the upper pillow can support the human head, and the lower pillow can support the neck. Or the middle pillow can support the human neck, and the lower pillow can support the top of the human back, jointly acting with the chair backrest to form a more fitting support. The upper pillow then supports the human head, further increasing the supporting methods. The upper pillow 2 is mounted on the middle pillow 21 through an adjustment assembly that can drive its rotation to facilitate adjusting the angle of the upper pillow. The adjustment assembly includes two connecting seats 6 oppositely disposed on the middle pillow 21. One of the connecting seats is provided with a through hole and a plurality of protruding and spaced tooth grooves 5 are provided along the circumferential direction in the through hole. A groove is opened at the position opposite to the through hole on the other connecting seat, and a screw hole 7 is provided in the groove. The rotating shaft 4 is movably disposed in the through hole and its end can extend into the groove. A convex tooth 41 that cooperates with the tooth groove is provided on the rotating shaft. The end of the upper pillow 2 is disposed between the two connecting seats and is connected to the convex tooth of the rotating shaft through the tooth groove. An axial hole is opened along the axial direction on the rotating shaft 4, and a compression spring 8 is provided in the axial hole. The end of the fixing screw 9 passes through the compression spring and is screwed into the screw hole. The rotating shaft can move along the through hole and drive the convex tooth of the rotating shaft to disengage from the tooth groove of the connecting seat, thereby releasing the locking of the upper pillow. Similarly, a button 10 with an end protruding outside the through hole of the connecting seat 6 is connected to the rotating shaft 4. The button drives the rotating shaft to move and makes the convex tooth 41 of the rotating shaft move into the upper pillow 2 and disengage from the tooth groove 5 of the connecting seat.
[0036] In the described chair headrest structure, one, two, three or more middle pillows can be provided between the upper pillow and the lower pillow, so as to form a larger range of adjustment and support and meet the usage needs of more people. The middle pillow can be directly hinged to the lower pillow, or can be connected to the lower pillow through an adjustment assembly. Similarly, adjacent middle pillows can also be directly hinged end to end or connected through an adjustment assembly. When adjusting the headrest, the upper pillow, multiple middle pillows, and lower pillow can be arranged in sequence along an arc, thus forming a larger structure similar to a traditional single headrest. When the middle or upper pillow is not needed, all or part of the middle pillows and the headrest can be folded or partially folded and stored behind the lower pillow in sequence, thus forming a smaller single headrest structure, which can also effectively save space, as shown in Figure 10.
[0037] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.
Claims
1. A headrest structure of a chair, comprising a headrest bracket (1) directly or indirectly installed on the backrest of the chair, and a headrest installed on the headrest bracket, characterized in that: The headrest includes a lower pillow (3) mounted on a headrest bracket, and an upper pillow (2) rotatably mounted on the upper end of the lower pillow.
2. The chair headrest structure according to claim 1, characterized in that: The lower pillow (3) is fixedly or rotatably mounted on the headrest bracket (1).
3. The chair headrest structure according to claim 1 or 2, characterized in that: The upper pillow (2) is mounted on the lower pillow (3) through an adjusting assembly capable of driving it to rotate; the adjusting assembly includes two connecting seats (6) oppositely arranged on the lower pillow (3), a through hole is provided in one of the connecting seats and a plurality of protruding and spaced tooth grooves (5) are provided along the circumferential direction in the through hole, a groove is opened at a position opposite to the through hole on the other connecting seat, a screw hole (7) is provided in the groove, a rotating shaft (4) is movably arranged in the through hole and the end portion can extend into the groove, a convex tooth (41) matched with the tooth groove is arranged on the rotating shaft, the end portion of the upper pillow (2) is arranged between the two connecting seats and is connected to the convex tooth of the rotating shaft through the tooth groove; an axial hole is opened along the axial direction on the rotating shaft (4), a compression spring (8) is arranged in the axial hole, the end portion of a fixing screw (9) passes through the compression spring and is screwed into the screw hole, and the rotating shaft can move along the through hole and drive the convex tooth of the rotating shaft to disengage from the tooth groove of the connecting seat.
4. The chair headrest structure according to claim 3, wherein: A button (10) with an end protruding out of the through hole of the connecting seat (6) is connected to the rotating shaft (4), and the button drives the rotating shaft to move and makes the convex tooth (41) of the rotating shaft move into the upper pillow (2) and disengage from the tooth groove (5) of the connecting seat.
5. The chair headrest structure according to claim 1 or 2, characterized in that: The headrest further includes one or more middle pillows (21) arranged between the upper pillow (2) and the lower pillow (3), and the upper pillow is mounted on the lower pillow through the middle pillow.
6. The chair headrest structure according to claim 5, characterized in that: There are two or more middle pillows (21), all the middle pillows are connected in sequence, and the middle pillows at both ends are respectively connected to the upper pillow (2) and the lower pillow (3).
7. The chair headrest structure according to claim 5, wherein: The upper pillow (2) is mounted on the middle pillow (21) through an adjusting assembly capable of driving it to rotate; the adjusting assembly includes two connecting seats (6) oppositely arranged on the middle pillow (21), a through hole is provided in one of the connecting seats and a plurality of protruding and spaced tooth grooves (5) are provided along the circumferential direction in the through hole, a groove is opened at a position opposite to the through hole on the other connecting seat, a screw hole (7) is provided in the groove, a rotating shaft (4) is movably arranged in the through hole and the end portion can extend into the groove, a convex tooth (41) matched with the tooth groove is arranged on the rotating shaft, the end portion of the upper pillow (2) is arranged between the two connecting seats and is connected to the convex tooth of the rotating shaft through the tooth groove; an axial hole is opened along the axial direction on the rotating shaft (4), a compression spring (8) is arranged in the axial hole, the end portion of a fixing screw (9) passes through the compression spring and is screwed into the screw hole, and the rotating shaft can move along the through hole and drive the convex tooth of the rotating shaft to disengage from the tooth groove of the connecting seat.
8. The chair headrest structure according to claim 7, characterized in that: A button (10) with an end protruding out of the through hole of the connecting seat (6) is connected to the rotating shaft (4), and the button drives the rotating shaft to move and makes the convex tooth (41) of the rotating shaft move into the upper pillow (2) and disengage from the tooth groove (5) of the connecting seat.
9. The chair headrest structure according to claim 1 or 2, characterized in that: There is a movable seat (20) capable of moving back and forth, and a front and back adjusting mechanism for driving the movable seat to move back and forth, and the headrest bracket (1) is rotatably mounted on the movable seat.
10. The chair headrest structure according to claim 9, characterized in that: There is a lifter (30) capable of being mounted on the backrest of the chair in a liftable manner, and the movable seat (20) is mounted on the lifter.