Headrest and ergonomic chair

Abstract

The utility model discloses a headrest and an ergonomic chair, the headrest comprises: a headrest frame assembly, the headrest frame assembly is provided with a plurality of lifting chutes, the lifting chutes extend along the height direction of the headrest frame assembly, and the plurality of lifting chutes are arranged at intervals along the length direction of the headrest frame assembly; the support assembly is suitable for being connected with a chair back, and the support assembly is connected into the multiple lifting sliding grooves in a sliding mode; the elastic piece is arranged between the support assembly and the lifting sliding groove, and the elastic piece is used for generating elastic force for driving the headrest frame assembly to slide upwards relative to the support assembly. According to the embodiment of the utility model, the headrest can be adaptively adjusted in the vertical direction according to the head position of a user, and has the advantages of sensitive adjustment, high adjustment stability and the like.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a headrest and an ergonomic chair. Background Art

[0002] In related technologies, headrests typically include a headrest frame assembly and a support assembly. The support assembly is used to connect to the chair back, and the headrest frame assembly is vertically connected to the support assembly. When the user's head presses against the headrest, the headrest frame assembly can move downwards with the user's head to adjust the height of the headrest frame assembly, thereby providing better support for the user's head.

[0003] However, due to the unreasonable structural design of the headrest in the relevant technology, not only is the sensitivity of the headrest frame component in the vertical direction low, but the stability of the adjustment is also poor, resulting in a poor user experience. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a headrest that can adaptively adjust in the vertical direction according to the user's head position, possessing advantages such as high adjustment sensitivity and stability.

[0005] This utility model embodiment also proposes an ergonomic chair with the above-mentioned headrest.

[0006] To achieve the above objectives, a first aspect of this utility model provides a headrest, comprising: a headrest frame assembly having a plurality of lifting grooves extending along the height direction of the headrest frame assembly and spaced apart along the length direction of the headrest frame assembly; a support assembly adapted to be connected to a chair back and slidably connected within the plurality of lifting grooves; and an elastic member disposed between the support assembly and the lifting grooves, the elastic member being used to generate an elastic force that drives the headrest frame assembly to slide upward relative to the support assembly.

[0007] Therefore, the headrest according to the present invention can be adaptively adjusted in the vertical direction according to the user's head position, and has the advantages of high adjustment sensitivity and high adjustment stability.

[0008] According to some specific embodiments of the present invention, there are two lifting slides, and the two lifting slides are respectively arranged adjacent to the left and right sides of the headrest frame assembly; and the two ends of the bracket assembly are respectively slidably connected to the two lifting slides.

[0009] According to some specific embodiments of the present invention, the headrest frame assembly includes: a headrest frame; and a lifting slide seat, wherein the lifting slide seat is detachably connected to the headrest frame and the lifting slide seat forms the lifting slide.

[0010] According to some specific embodiments of the present invention, the bracket assembly includes: a support bracket; a sliding member, the sliding member including a first slider and a second slider, the support bracket being connected to the first slider, and at least one of the first slider and the second slider extending into the lifting slide groove; wherein, along the front-back direction of the headrest, the first slider and the second slider are disposed on opposite sides of the lifting slide groove seat, and the first slider is connected to the second slider.

[0011] According to some specific embodiments of this utility model, there are two lifting slide seats, which are respectively arranged adjacent to the left and right sides of the headrest frame; and there are two sliding members, which are respectively connected to the two ends of the support bracket, and the two sliding members are correspondingly matched with the two lifting slide seats.

[0012] According to some specific embodiments of the present invention, the first slider and the second slider are respectively stopped on opposite sides of the lifting slide seat, and at least one of the first slider and the second slider is provided with a sliding boss, which can be slidably extended into the lifting slide.

[0013] According to some specific embodiments of the present invention, one end of the elastic element is connected to the sliding element, and the other end of the elastic element is connected to the lower side of the lifting slide seat, so as to stretch the elastic element when the lifting slide seat moves downward relative to the sliding element; and / or, one end of the elastic element is connected to the sliding element, and the other end of the elastic element is connected to the upper side of the lifting slide seat, so as to compress the elastic element when the lifting slide seat moves downward relative to the sliding element.

[0014] According to some specific embodiments of the present invention, the first slider has a plurality of first sliding protrusions protruding from one side facing the lifting slide seat, and the plurality of first sliding protrusions abut against one side of the lifting slide seat to reduce the friction between the first slider and the lifting slide seat; and / or, the second slider has a plurality of second sliding protrusions protruding from one side facing the lifting slide seat, and the plurality of second sliding protrusions abut against the other side of the lifting slide seat to reduce the friction between the second slider and the lifting slide seat.

[0015] According to some specific embodiments of the present invention, the outer contour of the cross-section of the first sliding protrusion is arc-shaped along the length direction of the lifting slide groove; and / or the outer contour of the cross-section of the second sliding protrusion is arc-shaped along the length direction of the lifting slide groove.

[0016] According to a second aspect of the present invention, an ergonomic chair is provided, comprising: a chair back; and a headrest according to a first aspect of the present invention, wherein the headrest is connected to the chair back.

[0017] According to the second aspect of the present invention, the ergonomic chair utilizes the headrest described in the first aspect of the present invention, which can adaptively adjust in the vertical direction according to the user's head position, and has the advantages of high adjustment sensitivity and high adjustment stability.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a structural schematic diagram of the headrest frame assembly and the support assembly according to an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at point A;

[0022] Figure 3 This is an exploded view of the headrest according to an embodiment of the present utility model;

[0023] Figure 4 This is a structural schematic diagram of the lifting slide seat and sliding member according to an embodiment of the present utility model;

[0024] Figure 5 This is an exploded view of the lifting slide seat and sliding member according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the first slider according to an embodiment of the present utility model.

[0026] Figure label:

[0027] 1. Headrest;

[0028] 100. Headrest frame assembly; 110. Headrest frame; 120. Lifting slide rail base; 121. Lifting slide rail;

[0029] 200, bracket assembly; 210, support bracket; 220, slider; 221, first slider; 222, first sliding protrusion; 223, first connecting hole; 224, sliding boss; 225, second slider; 226, second connecting hole; 227, stop groove;

[0030] 300. Elastic components;

[0031] 400. Lifting support. DETAILED DESCRIPTION

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0035] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0036] The headrest 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0037] like Figures 1-6 As shown in the attached diagram, the up-down direction is the up-down direction (height direction) of the headrest 1, which is also the up-down direction of the ergonomic chair; the front-back direction is the front-back direction of the headrest 1, which is also the front-back direction of the ergonomic chair; and the left-right direction is the left-right direction (length direction) of the headrest 1, which is also the left-right direction of the ergonomic chair.

[0038] The headrest 1 according to an embodiment of the present utility model includes a headrest frame assembly 100, a support assembly 200, and an elastic element 300.

[0039] The headrest frame assembly 100 is provided with a plurality of lifting slides 121, which extend along the height direction of the headrest frame assembly 100 and are arranged at intervals along the length direction of the headrest frame assembly 100. The bracket assembly 200 is adapted to be connected to the chair back and is slidably connected to the plurality of lifting slides 121. An elastic member 300 is disposed between the bracket assembly 200 and the lifting slides 121 and is used to generate an elastic force that drives the headrest frame assembly 100 to slide upward relative to the bracket assembly 200.

[0040] According to an embodiment of the present invention, the headrest 1 has a lifting groove 121 provided on the headrest frame assembly 100, and the support assembly 200 is slidably connected within the lifting groove 121. This configuration allows the support assembly 200 to slide along the lifting groove 121. Since the support assembly 200 is connected to the chair back, it can remain stationary relative to the chair back, thereby enabling the headrest frame assembly 100 to slide vertically relative to the support assembly 200. Consequently, when the user's head presses against the headrest 1, the headrest frame assembly 100 can move downwards following the user's head to adjust its height, thereby improving the fit between the headrest 1 and the user's head and providing better head support.

[0041] Furthermore, by providing a lifting slide 121 at the connection between the support assembly 200 and the headrest frame assembly 100, the lifting slide 121 can be closer to the front of the headrest frame assembly 100 in the front-back direction. That is, the movable connection between the support assembly 200 and the headrest frame assembly 100 can be closer to the front of the headrest frame assembly 100. When the user's head presses down on the headrest 1, the headrest frame assembly 100 is easier to move downward under the pressure of the head, thereby improving the adjustment sensitivity of the headrest frame assembly 100 and making the adjustment effect of the headrest frame assembly 100 in the vertical direction better.

[0042] Furthermore, the relative position of the headrest frame assembly 100 and the support assembly 200 in the vertical direction can be adjusted by sliding the support assembly 200 along the lifting slide 121, thereby adjusting the height of the headrest frame assembly 100. The structure is simple, easy to assemble, and more convenient to adjust.

[0043] In addition, there are multiple lifting slides 121, and the support assembly 200 is slidably fitted into multiple lifting slides 121. This arrangement can realize multi-point connection between the headrest frame assembly 100 and the support assembly 200, which is conducive to improving the connection stability between the headrest frame assembly 100 and the support assembly 200. This can prevent the headrest frame assembly 100 from swaying relative to the support assembly 200 in the left and right directions, so that the headrest frame assembly 100 can move more stably relative to the support assembly 200 in the up and down directions. The adjustment stability of the headrest 1 can be better, so that the headrest 1 can better support the user's head and provide a better user experience.

[0044] Additionally, an elastic element 300 is disposed between the support assembly 200 and the lifting slide 121, and the elastic element 300 is used to generate an elastic force that drives the headrest frame assembly 100 to slide upward relative to the support assembly 200. Thus, when the user's head presses downward against the headrest 1, the headrest frame assembly 100 can move downward relative to the support assembly 200. At this time, the elastic element 300 can be compressed or stretched to generate an elastic force. When the user's head moves forward, the elastic element 300 can push the headrest frame assembly 100 upward relative to the support assembly 200, so that the headrest 1 can adaptively adjust according to the position of the user's head, providing better support. Furthermore, when the user's head completely leaves the headrest 1, the elastic element 300 can push the headrest frame assembly 100 upward to return to its initial state.

[0045] Thus, the headrest 1 according to this utility model embodiment can adaptively adjust in the vertical direction according to the user's head position, and has the advantages of high adjustment sensitivity and high adjustment stability.

[0046] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, there are two lifting slides 121, and the two lifting slides 121 are respectively located adjacent to the left and right sides of the headrest frame assembly 100. The two ends of the bracket assembly 200 are slidably connected to the two lifting slides 121.

[0047] This design not only improves the connection stability between the headrest frame assembly 100 and the support assembly 200, allowing the headrest frame assembly 100 to move more stably relative to the support assembly 200 in the vertical direction, but also eliminates the need for excessive lifting slides 121, which simplifies the structure of the headrest frame assembly 100 and makes it easier to install.

[0048] In addition, by providing lifting grooves 121 near the left and right sides of the headrest frame assembly 100, the left and right ends of the headrest frame assembly 100 can cooperate with the support assembly 200. The load-bearing force of the headrest frame assembly 100 and the support assembly 200 can be more evenly distributed. While reducing the shaking of the headrest frame assembly 100 relative to the support assembly 200, it can also effectively prevent damage to the connection structure between the headrest frame assembly 100 and the support assembly 200, thereby extending the service life of the headrest 1.

[0049] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the headrest frame assembly 100 includes a headrest frame 110 and a lifting slide seat 120.

[0050] The lifting slide seat 120 is detachably connected to the headrest frame 110, and the lifting slide seat 120 forms a lifting slide 121. The lifting slide seat 120 and the headrest frame 110 can be connected by bolts.

[0051] The lifting slide 121 can extend vertically along the headrest frame assembly 100, and the lifting slide 121 can penetrate the lifting slide seat 120 in the front-back direction, so that the bracket assembly 200 can be slidably connected in the lifting slide 121.

[0052] By dividing the headrest frame assembly 100 into a headrest frame 110 and a lifting slide seat 120, the headrest frame 110 and the lifting slide seat 120 can be processed and formed separately before being connected together. This eliminates the need to directly process the lifting slide 120 on the headrest frame 110, which simplifies the structure of the headrest frame 110 and facilitates processing and assembly.

[0053] In some specific embodiments of this utility model, such as Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the bracket assembly 200 includes a support bracket 210 and a slider 220.

[0054] The slider 220 includes a first slider 221 and a second slider 225. The support bracket 210 is connected to the first slider 221, and at least one of the first slider 221 and the second slider 225 extends into the lifting groove 121.

[0055] Along the front-back direction of the headrest 1, the first slider 221 and the second slider 225 are located on opposite sides of the lifting slide seat 120, and the first slider 221 is connected to the second slider 225.

[0056] Specifically, the first slider 221 can be located on the rear side of the lifting slide seat 120 and connected to the support bracket 210, that is, the first slider 221 is the rear slider, and the second slider 225 can be located on the front side of the lifting slide seat 120 and connected to the first slider 221, that is, the second slider 225 can be the front slider.

[0057] For example, the first slider 221 and the second slider 225 can be connected by bolts. For instance, multiple connecting holes can be provided on the first slider 221 and the second slider 225 respectively, and the bolts can be inserted into the connecting holes of the first slider 221 and the second slider 225 in sequence to connect and fix the first slider 221 and the second slider 225.

[0058] In addition, the width of the first slider 221 and the second slider 225 can both be greater than the width of the lifting slide 121. The second slider 225 can abut against the front side of the lifting slide seat 120, and the first slider 221 can abut against the rear side of the lifting slide 121. That is, the first slider 221 and the second slider 225 clamp the lifting slide seat 120 to limit the relative position of the slider 220 and the lifting slide seat 120 in the front-back direction, so as to prevent the slider 220 and the lifting slide seat 120 from moving relative to each other in the front-back direction, so that the slider 220 and the lifting slide seat 120 are stably connected, thereby allowing the support assembly 200 to move stably relative to the headrest frame assembly 100 along the extension direction of the lifting slide 121.

[0059] In some embodiments of this utility model, such as Figure 2 As shown, the support assembly 200 may also include a lifting support 400. The support bracket 210 can be connected to the chair back through the lifting support 400, thereby allowing the headrest 1 to be adjusted relative to the chair back using the lifting support 400.

[0060] In some specific embodiments of this utility model, the support bracket 210 and the first slider 221 can be rotatably connected so that the first slider 221 can rotate relative to the support bracket 210. For example, multiple stop grooves 227 can be provided on the outer peripheral surface of the first slider 221. The multiple stop grooves 227 can be distributed at intervals along the circumference of the first slider 221, and the support bracket 210 can be provided with a limiting structure. When the first slider 221 rotates to different angles relative to the support bracket 210, the limiting structure on the support bracket 210 can respectively cooperate in different stop grooves 227 to realize that the first slider 221 is fixed relative to the support bracket 210 at different angles. This allows for multi-angle adjustment of the headrest frame assembly 100 relative to the support bracket 210, so that the headrest 1 can better fit and support the user's head, resulting in a better user experience.

[0061] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, there are two lifting slide seats 120, which are respectively located near the left and right sides of the headrest frame 110, and there are two sliding members 220, which are respectively connected to the two ends of the support bracket 210. The two sliding members 220 are matched one-to-one with the two lifting slide seats 120.

[0062] With this configuration, both sides of the headrest frame assembly 110 can slide and engage with the support assembly 200, resulting in higher connection stability between the headrest frame assembly 110 and the support assembly 200. This prevents the headrest frame assembly 110 from wobbling relative to the support assembly 200 in the left-right direction. The headrest frame assembly 110 can move more stably relative to the support assembly 200 in the up-down direction, allowing the headrest 1 to provide more stable support for the user's head. Furthermore, the load-bearing capacity of the support assembly 200 can be more evenly distributed. In addition to reducing the wobbling of the headrest frame assembly 110 relative to the support assembly 200, this configuration also effectively prevents damage to the connection structure between the headrest frame assembly 110 and the support assembly 200, thereby extending the service life of the headrest 1.

[0063] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the first slider 221 and the second slider 225 are respectively stopped on opposite sides of the lifting slide seat 120, and at least one of the first slider 221 and the second slider 225 is provided with a sliding boss 224, which can slide into the lifting slide 121.

[0064] For example, a sliding boss 224 can be constructed only on the first slider 221. The sliding boss 224 can be located on the front side of the first slider 221 and can slidably extend into the lifting groove 121. The second slider 225 is connected to the sliding boss 224 to achieve the connection between the first slider 221 and the second slider 225. For example, multiple first connecting holes 223 can be provided on the sliding boss 224, and multiple second connecting holes 226 can be provided on the second slider 225. The multiple second connecting holes 226 are connected to the multiple first connecting holes 223 one-to-one by fasteners.

[0065] Alternatively, a sliding boss 224 can be constructed only on the second slider 225. The sliding boss 224 can be located on the rear side of the second slider 225. The sliding boss 224 can slide into the lifting groove 121, and the first slider 221 is connected to the sliding boss 224 to realize the connection between the first slider 221 and the second slider 225.

[0066] Alternatively, sliding bosses 224 can be provided on both the first slider 221 and the second slider 225. That is, the front side of the first slider 221 is provided with a sliding boss 224, and the rear side of the second slider 225 is also provided with a sliding boss 224. The sliding bosses 224 on the first slider 221 and the sliding bosses 224 on the second slider 225 can both slide into the lifting groove 121, and the sliding bosses 224 on the first slider 221 and the sliding bosses 224 on the second slider 225 are connected to each other, thereby realizing the connection between the first slider 221 and the second slider 225.

[0067] With this configuration, when the sliding boss 224 extends into the lifting slide 121, the two side walls of the sliding boss 224 in the width direction can respectively abut against the two side walls of the lifting slide 121 in the width direction. This can prevent the sliding member 220 from wobbling relative to the lifting slide seat 120 in the width direction of the lifting slide 121, thereby improving the stability of the connection between the sliding member 220 and the lifting slide seat 120, so that the relative movement of the headrest frame assembly 100 and the bracket assembly 200 in the vertical direction can be more stable.

[0068] Furthermore, when the slider 220 moves upward along the lifting slide 121 to its limit position, the upper end of the sliding boss 224 can abut against the upper side wall of the lifting slide 121, and when the slider 220 moves downward along the lifting slide 121 to its limit position, the lower end of the sliding boss 224 can abut against the lower side wall of the lifting slide 121. This limits the adjustment range of the headrest 1 in the vertical direction, preventing the headrest 1 from being over-adjusted in the vertical direction, and making the structural design more reasonable.

[0069] In some specific embodiments of this utility model, such as Figure 1 , Figure 2 and Figures 4-6 As shown, one end of the elastic element 300 is connected to the sliding element 220, and the other end of the elastic element 300 is connected to the lower side of the lifting slide seat 120, so as to stretch the elastic element 300 when the lifting slide seat 120 moves downward relative to the sliding element 220.

[0070] For example, the elastic element 300 can be a spring, which is in its initial state and remains balanced when the seat is not in use, i.e., when the headrest 1 is not under pressure.

[0071] Specifically, when the user's head presses against the headrest 1, the headrest frame assembly 100 moves downward relative to the support assembly 200. That is, the lifting slide seat 120 moves downward relative to the slider 220. At this time, the slider 220 moves upward along the lifting slide 121, and the slider 220 gradually moves away from the lower side of the lifting slide seat 120, thereby stretching the elastic element 300. This allows the elastic element 300 to generate an elastic restoring force that drives the lifting slide seat 120 to move upward relative to the slider 220. In this way, when the user's head moves forward, the elastic element 300 can drive the headrest frame assembly 100 to adaptively adjust according to the position of the user's head, resulting in better support. After the user's head completely leaves the headrest 1, the elastic force of the elastic element 300 can drive the headrest frame assembly 100 to move upward relative to the support assembly 200 and return to its original position.

[0072] In some other specific embodiments of this utility model, one end of the elastic member 300 is connected to the sliding member 220, and the other end of the elastic member 300 is connected to the upper side of the lifting slide seat 120, so as to compress the elastic member 300 when the lifting slide seat 120 moves downward relative to the sliding member 220.

[0073] Specifically, when the user's head presses against the headrest 1, the headrest frame assembly 100 moves downward relative to the support assembly 200. That is, the lifting slide seat 120 moves downward relative to the slider 220. At this time, the slider 220 moves upward along the lifting slide 121, and gradually approaches the upper side of the lifting slide seat 120, thereby compressing the elastic element 300. This allows the elastic element 300 to generate an elastic restoring force that drives the lifting slide seat 120 to move upward relative to the slider 220. In this way, when the user's head moves forward, the elastic element 300 can drive the headrest frame assembly 100 to adaptively adjust according to the position of the user's head, resulting in better support. After the user's head completely leaves the headrest 1, the elastic force of the elastic element 300 can drive the headrest frame assembly 100 to move upward relative to the support assembly 200 and return to its original position.

[0074] In addition, multiple elastic elements 300 can be provided, and multiple elastic elements 300 can be connected to the upper and lower sides of the lifting slide seat 120 and between the sliding element 220 respectively. In this way, the headrest frame assembly 100 can be driven to move relative to the support assembly 200 through multiple elastic elements 300, which helps to improve the stability of the headrest 1's adaptive adjustment and the adjustment effect is better.

[0075] In some specific embodiments of this utility model, such as Figure 3-Figure 6 As shown, the first slider 221 has a plurality of first sliding protrusions 222 protruding from the side facing the lifting slide seat 120, and the plurality of first sliding protrusions 222 abut against the side of the lifting slide seat 120 to reduce the friction between the first slider 221 and the lifting slide seat 120.

[0076] And / or, the second slider 225 is provided with a plurality of second sliding protrusions (not shown in the figure) protruding from the side facing the lifting slide seat 120, and the plurality of second sliding protrusions abut against the other side of the lifting slide seat 120 to reduce the friction between the second slider 225 and the lifting slide seat 120.

[0077] In other words, the first sliding protrusion 222 can be provided only on the first slider 221; or, the second sliding protrusion can be provided only on the second slider 225; or, the first sliding protrusion 222 can be provided on the first slider 221 and the second sliding protrusion can be provided on the second slider 225.

[0078] The first sliding protrusion 222 can extend along the width direction of the first slider 221, and multiple first sliding protrusions 222 can be distributed at intervals along the length direction of the first slider 221. By setting the first sliding protrusion 224, the contact area between the first slider 221 and the lifting slide seat 120 can be reduced, thereby reducing the friction between the first slider 221 and the lifting slide seat 120. The first slider 221 can move up and down along the lifting slide 121 more easily, which is beneficial to improving the adjustment sensitivity of the headrest 1 and making it easier to adjust.

[0079] Furthermore, the second sliding protrusion can extend along the width direction of the second slider 225, and multiple second sliding protrusions can be distributed at intervals along the length direction of the second slider 225. By setting the second sliding protrusion, the contact area between the second slider 225 and the lifting slide seat 120 can be reduced, thereby reducing the friction between the second slider 225 and the lifting slide seat 120. The second slider 225 can move up and down along the lifting slide 121 more easily, which is beneficial to improving the adjustment sensitivity of the headrest 1 and making it easier to adjust.

[0080] Furthermore, such as Figure 4 and Figure 6 As shown, along the length of the lifting slide 121, the outer contour of the cross-section of the first sliding protrusion 222 is arc-shaped, and / or, along the length of the lifting slide 121, the outer contour of the cross-section of the second sliding protrusion is arc-shaped.

[0081] In other words, the outer contour of the first sliding protrusion 222 can be constructed as an arc surface, which can further reduce the contact area between the first sliding protrusion 222 and the lifting slide seat 120, thereby reducing the friction between the first sliding protrusion 222 and the lifting slide seat 120. The friction between the first slider 221 and the lifting slide seat 120 can be even smaller, so that the first slider 221 can slide up and down relative to the lifting slide seat 120.

[0082] Furthermore, the outer contour of the second sliding protrusion can be constructed as an arc surface, which can further reduce the contact area between the second sliding protrusion and the lifting slide seat 120, thereby reducing the friction between the second sliding protrusion and the lifting slide seat 120. The friction between the second slider 225 and the lifting slide seat 120 can be even smaller, so that the second slider 225 can slide up and down relative to the lifting slide seat 120.

[0083] The following description, with reference to the accompanying drawings, describes an ergonomic chair according to an embodiment of the present invention.

[0084] The ergonomic chair includes a backrest and a headrest 1 according to the above embodiment of the present invention, the headrest 1 being connected to the backrest.

[0085] The ergonomic chair according to the embodiment of the present invention utilizes the headrest 1 according to the above embodiment of the present invention. The headrest 1 can be adaptively adjusted in the vertical direction according to the user's head position, and has the advantages of high adjustment sensitivity and high adjustment stability.

[0086] The other components and operation of the headrest 1 and the ergonomic chair according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0087] In the description of this specification, references to terms such as "specific embodiment" and "specific example" refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0088] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A headrest (1), characterized in that, include: A headrest frame assembly (100) is provided with a plurality of lifting slides (121), the lifting slides (121) extending along the height direction of the headrest frame assembly (100), and the plurality of lifting slides (121) are arranged at intervals along the length direction of the headrest frame assembly (100); A support assembly (200) adapted to be connected to a chair back, and the support assembly (200) being slidably connected within a plurality of the lifting grooves (121); An elastic element (300) is disposed between the support assembly (200) and the lifting slide (121), and the elastic element (300) is used to generate an elastic force that drives the headrest frame assembly (100) to slide upward relative to the support assembly (200).

2. The headrest (1) according to claim 1, characterized in that, There are two lifting slides (121), and the two lifting slides (121) are respectively arranged adjacent to the left and right sides of the headrest frame assembly (100); and, The two ends of the bracket assembly (200) are slidably connected to the two lifting slides (121).

3. The headrest (1) according to claim 1, characterized in that, The headrest frame assembly (100) includes: Headrest frame (110); A lifting slide seat (120) is detachably connected to the headrest frame (110), and the lifting slide seat (120) forms the lifting slide (121).

4. The headrest (1) according to claim 3, characterized in that, The support assembly (200) includes: Support bracket (210); The slider (220) includes a first slider (221) and a second slider (225), the support bracket (210) is connected to the first slider (221), and at least one of the first slider (221) and the second slider (225) extends into the lifting groove (121); Along the front-back direction of the headrest (1), the first slider (221) and the second slider (225) are located on opposite sides of the lifting slide seat (120), and the first slider (221) is connected to the second slider (225).

5. The headrest (1) according to claim 4, characterized in that, The lifting slide seats (120) are two in number and are respectively arranged adjacent to the left and right sides of the headrest frame (110); and, There are two sliding members (220) respectively connected to the two ends of the support bracket (210), and the two sliding members (220) are matched one-to-one with the two lifting slide seats (120).

6. The headrest (1) according to claim 4, characterized in that, The first slider (221) and the second slider (225) are respectively stopped on opposite sides of the lifting slide seat (120), and at least one of the first slider (221) and the second slider (225) is provided with a sliding boss (224), which can be slidably extended into the lifting slide (121).

7. The headrest (1) according to claim 4, characterized in that, One end of the elastic element (300) is connected to the sliding element (220), and the other end of the elastic element (300) is connected to the lower side of the lifting slide seat (120) to stretch the elastic element (300) when the lifting slide seat (120) moves downward relative to the sliding element (220); and / or, One end of the elastic element (300) is connected to the sliding element (220), and the other end of the elastic element (300) is connected to the upper side of the lifting slide seat (120) to compress the elastic element (300) when the lifting slide seat (120) moves downward relative to the sliding element (220).

8. The headrest (1) according to claim 4, characterized in that, The first slider (221) has a plurality of first sliding protrusions (222) protruding from the side facing the lifting slide seat (120), and the plurality of first sliding protrusions (222) abut against one side of the lifting slide seat (120) to reduce the friction between the first slider (221) and the lifting slide seat (120); and / or, The second slider (225) has a plurality of second sliding protrusions protruding from one side facing the lifting slide seat (120), and the plurality of second sliding protrusions abut against the other side of the lifting slide seat (120) to reduce the friction between the second slider (225) and the lifting slide seat (120).

9. The headrest (1) according to claim 8, characterized in that, Along the length of the lifting groove (121), the outer contour of the cross-section of the first sliding protrusion (222) is arc-shaped; and / or Along the length of the lifting groove (121), the outer contour of the cross-section of the second sliding protrusion is arc-shaped.

10. An ergonomic chair, characterized in that, include: Chair back; The headrest (1) according to any one of claims 1-9 is connected to the chair back.

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