Headrest and ergonomic chair

Abstract

The utility model discloses a headrest and an ergonomic chair. The headrest comprises a headrest frame assembly, a headrest cushion assembly and a backrest assembly, the support assembly is suitable for being connected with a chair back, one of the headrest frame assembly and the support assembly is provided with a front-and-back sliding groove, the other one of the headrest frame assembly and the support assembly is provided with a sliding arm, the front-and-back sliding groove extends in the front-and-back direction, and the sliding arm is slidably connected into the front-and-back sliding groove; the elastic piece is arranged between the sliding arm and the bottom wall of the front-back sliding groove, and the elastic piece is used for generating elastic force for driving the headrest frame assembly to slide forwards relative to the support assembly. According to the headrest provided by the embodiment of the utility model, the headrest frame assembly can be adaptively adjusted in the front-back direction according to the position of the head of a user, the adjustment is more sensitive, and the user experience is better.

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 Technology

[0002] In related technologies, headrests are typically movably connected to the chair back. When a user's head presses against the headrest, the headrest can move backward with the user's head to adjust its front-to-back position, thereby allowing the headrest to better support the user's head.

[0003] However, due to the unreasonable structural design of the headrest in the relevant technology, the headrest has poor sensitivity in the front-to-back direction, making it difficult to quickly adjust back and forth according to the user's head position, resulting in poor adjustment effect and 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 whose frame assembly can adaptively adjust in the front-to-back direction according to the position of the user's head, with more sensitive adjustment and a better user experience.

[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; a support assembly adapted to be connected to a chair back, wherein one of the headrest frame assembly and the support assembly is provided with a front and rear sliding groove and the other is provided with a sliding arm, the front and rear sliding grooves extending in a front-rear direction, and the sliding arm slidably connected within the front and rear sliding grooves; and an elastic member disposed between the sliding arm and the bottom wall of the front and rear sliding grooves, and the elastic member being used to generate an elastic force that drives the headrest frame assembly to slide forward relative to the support assembly.

[0007] Therefore, the headrest according to the present invention can make the headrest frame assembly adaptively adjust in the front-back direction according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[0008] According to some specific embodiments of the present invention, the headrest frame assembly is provided with a plurality of front and rear sliding grooves, the plurality of front and rear sliding grooves being respectively arranged adjacent to the left and right sides of the headrest frame assembly, and the support assembly is provided with a plurality of sliding arms, the plurality of sliding arms extending into the plurality of front and rear sliding grooves in a one-to-one correspondence; or, the headrest frame assembly is provided with a plurality of sliding arms, the plurality of sliding arms being respectively arranged adjacent to the left and right sides of the headrest frame assembly, and the support assembly is provided with a plurality of front and rear sliding grooves, the plurality of sliding arms extending into the plurality of front and rear sliding grooves in a one-to-one correspondence.

[0009] According to some specific embodiments of the present invention, the headrest frame assembly includes: a headrest frame; a slider, the slider being detachably connected to the headrest frame, and the slider forming the sliding arm, the sliding arm extending along the front-back direction.

[0010] According to some specific embodiments of the present invention, the bracket assembly includes: a support bracket; and front and rear sliding groove seats, the front and rear sliding groove seats being connected to the support bracket and forming the front and rear sliding grooves.

[0011] According to some specific embodiments of the present invention, there are two sliding members, and the two sliding members are respectively arranged adjacent to the left and right sides of the headrest frame assembly; and there are two front and rear sliding groove seats, which are respectively connected to the two ends of the support bracket, and the two sliding members are correspondingly matched with the two front and rear sliding groove seats.

[0012] According to some specific embodiments of the present invention, the front and rear slide rail seats are further provided with limiting holes, the limiting holes penetrating one side wall of the front and rear slide rails; and the sliding arm is provided with a connecting hole on the side facing the limiting hole, the connecting hole being used to fix the limiting pin; wherein, when the sliding member slides to the limit position in the front and rear slide rails, the limiting pin abuts against the front or rear side wall of the limiting hole.

[0013] According to some specific embodiments of this utility model, there are multiple limiting pins, and the multiple limiting pins include: a first limiting pin, the upper side of the first limiting pin abutting against the upper sidewall of the limiting hole; a second limiting pin, the second limiting pin being spaced apart and directly below the first limiting pin, and the lower side of the second limiting pin abutting against the lower sidewall of the limiting hole; wherein, when the sliding member slides to the limit position in the front and rear sliding grooves, the first limiting pin and the second limiting pin simultaneously abut against the front sidewall or the rear sidewall of the limiting hole.

[0014] According to some specific embodiments of the present invention, the front sidewall of the limiting hole is provided with a first limiting protrusion, and when the first limiting pin and the second limiting pin abut against the front sidewall of the limiting hole, the first limiting protrusion and the upper sidewall of the limiting hole abut against the opposite sides of the first limiting pin, and the first limiting protrusion and the lower sidewall of the limiting hole abut against the opposite sides of the second limiting pin; and / or, the rear sidewall of the limiting hole is provided with a second limiting protrusion, and when the first limiting pin and the second limiting pin abut against the rear sidewall of the limiting hole, the second limiting protrusion and the upper sidewall of the limiting hole abut against the opposite sides of the first limiting pin, and the second limiting protrusion and the lower sidewall of the limiting hole abut against the opposite sides of the second limiting pin.

[0015] According to some specific embodiments of the present invention, a fixed post is provided at the bottom of the front and rear sliding grooves, and an installation groove is provided on the side of the sliding arm facing the bottom of the front and rear sliding grooves. One end of the elastic member is sleeved on the fixed post, and the other end of the elastic member extends into the installation 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. The headrest frame assembly can adaptively adjust in the front-back direction according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[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 the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

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

[0021] Figure 2 yes Figure 1 An enlarged view of point A;

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

[0023] Figure 4This is a structural schematic diagram of the front and rear sliding groove seats and the sliding member according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the sliding member according to an embodiment of the present utility model;

[0025] Figure 6 This is a structural schematic diagram of the front and rear sliding groove seats according to an embodiment of the present utility model;

[0026] Figure 7 This is a structural schematic diagram of the front and rear sliding groove seats from another perspective according to an embodiment of the present utility model.

[0027] Figure label:

[0028] 1. Headrest;

[0029] 100. Headrest frame assembly; 110. Headrest frame; 120. Slider; 121. Sliding arm; 122. Connecting hole; 123. First connecting hole; 124. Second connecting hole; 125. Mounting slot;

[0030] 200, bracket assembly; 210, support bracket; 220, front and rear sliding groove seat; 221, front and rear sliding groove; 222, stop groove; 223, limiting hole; 224, first limiting protrusion; 225, second limiting protrusion; 227, fixing post;

[0031] 300. Elastic components;

[0032] 400. Lifting support. Detailed Implementation

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] 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.

[0035] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0036] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0037] The headrest 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0038] like Figures 1-7 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.

[0039] 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.

[0040] The support assembly 200 is adapted to be connected to the chair back. One of the headrest frame assembly 100 and the support assembly 200 is provided with a front and rear sliding groove 221 and the other is provided with a sliding arm 121. The front and rear sliding groove 221 extends in the front and rear direction, and the sliding arm 121 is slidably connected in the front and rear sliding groove 221. An elastic member 300 is provided between the bottom wall of the sliding arm 121 and the front and rear sliding groove 221, and the elastic member 300 is used to generate an elastic force to drive the headrest frame assembly 100 to slide forward relative to the support assembly 200.

[0041] The fact that one of the headrest frame assembly 100 and the support assembly 200 is provided with a front and rear sliding groove 221 and the other is provided with a sliding arm 121 means that the headrest frame assembly 100 can be provided with a front and rear sliding groove 221 and the support assembly 200 can be provided with a sliding arm 121; or, the headrest frame assembly 100 can be provided with a sliding arm 121 and the support assembly 200 can be provided with a front and rear sliding groove 221.

[0042] According to an embodiment of the present invention, the headrest 1 has a front and rear sliding groove 221 in one of the headrest frame assembly 100 and the support assembly 200, and a sliding arm 121 in the other. The sliding arm 121 is slidably connected within the front and rear sliding groove 221. Since the support assembly 200 is connected to the chair back, it can remain stationary relative to the chair back. Therefore, the headrest frame assembly 100 can move relative to the support assembly 200 in the front-back direction. Consequently, when the user's head presses against the headrest 1, the headrest frame assembly 100 can move backward with the user's head to adjust its position in the front-back direction, thereby improving the fit between the headrest 1 and the user's head and providing better support.

[0043] Furthermore, by providing front and rear sliding grooves 221 at the connection between the support assembly 200 and the headrest frame assembly 100, the front and rear sliding grooves 221 can be closer to the front side 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 side of the headrest frame assembly 100. When the user's head presses the headrest 1 backward, the headrest frame assembly 100 is more likely to move backward 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 front-back direction better.

[0044] Additionally, the elastic element 300 is disposed between the bottom wall of the sliding arm 121 and the front and rear sliding grooves 221, and the elastic element 300 is used to generate an elastic force that drives the headrest frame assembly 100 to slide forward relative to the support assembly 200. Thus, when the user's head presses backward against the headrest 1, the headrest frame assembly 100 can move backward relative to the support assembly 200, at which point the elastic element 300 can be compressed to generate an elastic force. When the user's head moves forward, the elastic element 300 can push the headrest frame assembly 100 forward relative to the support assembly 200, allowing the headrest 1 to adaptively adjust according to the user's head position, resulting in better support. Furthermore, when the user's head completely leaves the headrest 1, the elastic element 300 can push the headrest frame assembly 100 forward to return to its initial state.

[0045] Thus, the headrest 1 according to the present utility model embodiment can make the headrest frame assembly 100 adaptively adjust in the front-back direction according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[0046] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the headrest frame assembly 100 is provided with a plurality of front and rear sliding grooves 221, which are respectively located adjacent to the left and right sides of the headrest frame assembly 100. The bracket assembly 200 is provided with a plurality of sliding arms 121, which extend into the plurality of front and rear sliding grooves 221 in a corresponding manner.

[0047] Alternatively, the headrest frame assembly 100 may be provided with a plurality of sliding arms 121, which are respectively arranged adjacent to the left and right sides of the headrest frame assembly 100, and the support assembly 200 may be provided with a plurality of front and rear sliding grooves 221, with the plurality of sliding arms 121 extending into the plurality of front and rear sliding grooves 221 in a corresponding manner.

[0048] This configuration allows for multi-point connections between the headrest frame assembly 100 and the support assembly 200, which improves the connection stability between them. This prevents the headrest frame assembly 100 from wobbling relative to the support assembly 200 in the left-right direction, allowing it to move more stably relative to the support assembly 200 in the front-back direction. This improves the adjustment stability of the headrest 1, enabling it to better support the user's head and provide a better user experience.

[0049] Furthermore, by setting the mating positions of the sliding arm 121 and the front and rear sliding grooves 221 near the left and right sides of the headrest frame assembly 100, both ends of the headrest frame assembly 100 can mate with the support assembly 200. This allows for a more even distribution of load on the headrest frame assembly 100 and the support assembly 200, reducing the swaying of the headrest frame assembly 100 relative to the support assembly 200 and effectively preventing 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.

[0050] 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 slider 120.

[0051] The slider 120 is detachably connected to the headrest frame 110, and the slider 120 forms a sliding arm 121 that extends in the front-back direction.

[0052] The cross-sectional shape of the sliding arm 121 can be non-circular, and the cross-sectional shape of the front and rear sliding grooves 221 can be non-circular to match the sliding arm 121. This can prevent the sliding arm 121 from rotating relative to the front and rear sliding grooves 221, which is beneficial to improving the connection stability between the sliding member 120 and the bracket assembly 200.

[0053] By dividing the headrest frame assembly 100 into a headrest frame 110 and a slider 120, the headrest frame 110 and the slider 120 can be machined separately and then connected together. This eliminates the need to directly machine the slider arm 121 onto the headrest frame 110, which simplifies the structure of the headrest frame 110 and facilitates processing and assembly.

[0054] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the bracket assembly 200 includes a support bracket 210 and front and rear sliding seats 220.

[0055] The front and rear slide seats 220 are connected to the support bracket 210, and the front and rear slide seats 220 form the front and rear slides 221.

[0056] By dividing the bracket assembly 200 into a support bracket 210 and front and rear sliding groove seats 220, the support bracket 210 and the front and rear sliding groove seats 220 can be machined and formed separately and then connected together. This eliminates the need to directly machine the front and rear sliding grooves 221 on the support bracket 210, which simplifies the structure of the support bracket 210 and facilitates processing and assembly.

[0057] In some specific embodiments of this utility model, such as Figure 7 As shown, the support bracket 210 and the front and rear sliding seats 220 can be rotatably connected, allowing the front and rear sliding seats 220 to rotate relative to the support bracket 210. For example, multiple stop grooves 222 can be provided on the outer circumferential surface of the front and rear sliding seats 220. The multiple stop grooves 222 can be distributed at intervals along the circumference of the front and rear sliding seats 220, and the support bracket 210 can be provided with a limiting structure. When the front and rear sliding seats 220 rotate relative to the support bracket 210 to different angles, the limiting structure on the support bracket 210 can respectively cooperate in different stop grooves 222 to realize that the front and rear sliding seats 220 are 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.

[0058] In some embodiments of the present invention, Figure 3 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.

[0059] In some specific embodiments of this utility model, such as Figure 1 and Figure 3 As shown, there are two sliders 120, and the two sliders 120 are respectively located near the left and right sides of the headrest frame assembly 100. There are also two front and rear sliding seats 220, which are respectively connected to the two ends of the support bracket 210. The two sliders 120 are matched one-to-one with the two front and rear sliding seats 220.

[0060] This design allows the headrest frame assembly 110 to slide smoothly with the support assembly 200 on both sides, resulting in greater stability in the connection 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 lateral direction, and allows for more stable forward and backward movement relative to the support assembly 200. Consequently, the headrest 1 provides more stable support for the user's head, and the load-bearing capacity of the support assembly 200 is more evenly distributed. This reduces wobbling of the headrest frame assembly 110 relative to the support assembly 200 and effectively prevents damage to the connection structure between the headrest frame assembly 110 and the support assembly 200, thus extending the lifespan of the headrest 1.

[0061] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the front and rear slide rail seats 220 are also provided with limiting holes 223, which penetrate one side wall of the front and rear slide rails 221. Additionally, the sliding arm 121 is provided with a connecting hole 122 on the side facing the limiting hole 223. The connecting hole 122 is used to fix the limiting pin (not shown in the figure).

[0062] When the slider 120 slides to its limit position in the front and rear slide grooves 221, the limiting pin abuts against the front or rear side wall of the limiting hole 223.

[0063] A limiting hole 223 can be provided on one side of the front and rear sliding groove seat 220 in the left and right directions, and a connecting hole 122 can be provided on one side of the sliding arm 121 in the left and right directions. The limiting pin is detachably installed in the limiting hole 223.

[0064] In this way, when assembling the sliding arm 121 and the front and rear slide grooves 221, the limiting pin can be removed so that the sliding arm 121 can be inserted into the front and rear slide grooves 221. After the sliding arm 121 is installed in place, one end of the limiting pin is connected to the limiting hole 223, and the other end of the limiting pin protrudes from the side of the sliding arm 121 facing the limiting hole 223.

[0065] Therefore, the sliding range of the sliding arm 121 in the front and rear sliding grooves 221 can be limited by the mutual abutment between the limiting pin and the side wall of the limiting hole 223.

[0066] For example, when the sliding arm 121 slides backward to its limit position within the front and rear sliding grooves 221, the limiting pin can abut against the rear side wall of the limiting hole 223, thereby preventing the sliding arm 121 from sliding excessively backward. That is, the range of backward adjustment of the headrest frame assembly 100 can be limited to prevent the headrest frame assembly 100 from moving excessively backward, so as to ensure that the headrest frame assembly 100 can stably fit and support the user's head.

[0067] When the sliding arm 121 slides forward to its limit position within the front and rear slide grooves 221, the limiting pin abuts against the front sidewall of the limiting hole 223. This prevents the sliding arm 121 from sliding forward excessively. On the one hand, it limits the forward adjustment range of the headrest frame assembly 100, ensuring that the headrest frame assembly 100 stably conforms to and supports the user's head, resulting in a more comfortable user experience. On the other hand, it prevents the sliding arm 121 from disengaging from the front and rear slide grooves 221, ensuring a stable connection between the sliding member 120 and the front and rear slide groove seats 220.

[0068] In some specific embodiments of this utility model, there are multiple limiting pins, and the multiple limiting pins include a first limiting pin and a second limiting pin.

[0069] The upper side of the first limiting pin abuts against the upper side wall of the limiting hole 223, and the second limiting pin is spaced apart and positioned directly below the first limiting pin, with the lower side of the second limiting pin abutting against the lower side wall of the limiting hole 223.

[0070] When the slider 120 slides to its limit position in the front and rear sliding grooves 221, the first limiting pin and the second limiting pin simultaneously abut against the front or rear sidewall of the limiting hole 223.

[0071] For example, two first limiting pins can be provided, and the two first limiting pins can be distributed at intervals along the length direction of the sliding arm 121. Two second limiting pins can be provided, and the two second limiting pins can be distributed at intervals along the length direction of the sliding arm 121.

[0072] Specifically, when the sliding arm 121 slides away from the bottom of the front and rear slide grooves 221 to its limit position, the first and second limiting pins located on the front side can simultaneously abut against the front sidewall of the limiting hole 223. Conversely, when the sliding arm 121 slides closer to the bottom of the front and rear slide grooves 221 to its limit position, the first and second limiting pins located on the rear side can simultaneously abut against the rear sidewall of the limiting hole 223. This arrangement allows multiple limiting pins to simultaneously abut against the sidewall of the limiting hole 223, which helps improve the stability of the limiting of the sliding arm 121 and the front and rear slide groove seats 220.

[0073] Correspondingly, multiple connecting holes 122 can also be provided on the side of the sliding arm 121 facing the limiting hole 223. The multiple connecting holes 122 include multiple first connecting holes 123 and multiple second connecting holes 124, with the first connecting holes 123 located above the second connecting holes 124.

[0074] Specifically, two first connecting holes 123 can be provided, and the two first connecting holes 123 can be distributed at intervals along the length direction of the sliding arm 121. Two first limiting pins can be connected to the two first connecting holes 123 in a one-to-one correspondence. Two second connecting holes 124 can also be provided, and the two second connecting holes 124 can be distributed at intervals along the length direction of the sliding arm 121. Two second limiting pins can be connected to the two second connecting holes 124 in a one-to-one correspondence.

[0075] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the front sidewall of the limiting hole 223 is provided with a first limiting protrusion 224. When the first limiting pin and the second limiting pin abut against the front sidewall of the limiting hole 223, the first limiting protrusion 224 and the upper sidewall of the limiting hole 223 abut against the opposite sides of the first limiting pin, and the first limiting protrusion 224 and the lower sidewall of the limiting hole 223 abut against the opposite sides of the second limiting pin.

[0076] With this configuration, when the sliding arm 121 slides forward along the front and rear slide grooves 221 to its limit position, the upper sidewalls of the first limiting protrusion 224 and the limiting hole 223 can clamp the first limiting pin on the front side, and the lower sidewalls of the second limiting protrusion 225 and the limiting hole 223 can clamp the second limiting pin on the front side. This can prevent the first and second limiting pins from wobbling relative to the front and rear slide groove seats 220 in the vertical direction. In other words, it can prevent the sliding member 120 from wobbling relative to the front and rear slide groove seats 220 in the vertical direction, so that the sliding member 120 can slide stably relative to the front and rear slide groove seats 220, which is beneficial to improving the stability of the headrest frame assembly 100 and the bracket assembly 200.

[0077] In some specific embodiments of this utility model, such as Figure 2 , Figures 4-6 As shown, the rear sidewall of the limiting hole 223 is provided with a second limiting protrusion 225. When the first limiting pin and the second limiting pin abut against the rear sidewall of the limiting hole 223, the second limiting protrusion 225 and the upper sidewall of the limiting hole 223 abut against the opposite sides of the first limiting pin, and the second limiting protrusion 225 and the lower sidewall of the limiting hole 223 abut against the opposite sides of the second limiting pin.

[0078] With this configuration, when the sliding arm 121 slides backward along the front and rear slide grooves 221 to its limit position, the upper sidewall of the second limiting protrusion 225 and the limiting hole 223 can clamp the first limiting pin on the rear side, and the lower sidewall of the second limiting protrusion 225 and the limiting hole 223 can clamp the second limiting pin on the rear side. This can prevent the first limiting pin and the second limiting pin from shaking relative to the front and rear slide groove seats 220 in the vertical direction. That is, it can prevent the sliding member 120 from shaking relative to the front and rear slide groove seats 220 in the vertical direction, so that the sliding member 120 can slide stably relative to the front and rear slide groove seats 220, which is beneficial to improving the cooperation stability between the headrest frame assembly 100 and the bracket assembly 200.

[0079] In some specific embodiments of this utility model, such as Figure 6 As shown, the bottom of the front and rear slide grooves 221 is provided with a fixed post 227, and the side of the sliding arm 121 facing the bottom of the front and rear slide grooves 221 is provided with an installation groove 125. One end of the elastic member 300 is sleeved on the fixed post 227, and the other end of the elastic member 300 extends into the installation groove 125.

[0080] For example, the elastic element 300 can be a spring.

[0081] The fixing post 227 can protrude forward from the bottom of the front and rear sliding grooves 221, the front end of the elastic element 300 can be disposed within the mounting groove 125, and the rear end of the elastic element 300 can be sleeved on the fixing post 227. By fixing the front and rear ends of the elastic element 300 with the fixing post 227 and the mounting groove 125, the elastic element 300 can be prevented from shaking radially, thereby improving the fixing stability of the elastic element 300 and enabling the elastic element 300 to provide elastic restoring force more stably.

[0082] The following description, with reference to the accompanying drawings, describes an ergonomic chair according to an embodiment of the present invention.

[0083] 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.

[0084] According to the ergonomic chair of the present invention, by utilizing the headrest 1 of the above embodiment of the present invention, the headrest 1 can make the headrest frame assembly 100 adaptively adjust in the front-back direction according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[0085] 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.

[0086] 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.

[0087] 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: Headrest frame assembly (100); A support assembly (200) adapted to be connected to a chair back, wherein one of the headrest frame assembly (100) and the support assembly (200) is provided with a front and rear sliding groove (221) and the other is provided with a sliding arm (121), the front and rear sliding groove (221) extending in the front and rear direction, and the sliding arm (121) being slidably connected within the front and rear sliding groove (221); An elastic element (300) is disposed between the bottom wall of the sliding arm (121) and the front and rear sliding grooves (221), and the elastic element (300) is used to generate an elastic force that drives the headrest frame assembly (100) to slide forward relative to the support assembly (200).

2. The headrest (1) according to claim 1, characterized in that, The headrest frame assembly (100) is provided with a plurality of front and rear sliding grooves (221), which are respectively arranged adjacent to the left and right sides of the headrest frame assembly (100), and the support assembly (200) is provided with a plurality of sliding arms (121), which extend into the plurality of front and rear sliding grooves (221) in a one-to-one correspondence; or, The headrest frame assembly (100) is provided with a plurality of sliding arms (121), which are respectively arranged adjacent to the left and right sides of the headrest frame assembly (100). The bracket assembly (200) is provided with a plurality of front and rear sliding grooves (221), and the plurality of sliding arms (121) extend into the plurality of front and rear sliding grooves (221) in a corresponding manner.

3. The headrest (1) according to claim 1, characterized in that, The headrest frame assembly (100) includes: Headrest frame (110); A slider (120) is detachably connected to the headrest frame (110) and forms the sliding arm (121) which extends in the front-back direction.

4. The headrest (1) according to claim 3, characterized in that, The support assembly (200) includes: Support bracket (210); Front and rear slide seats (220) are connected to the support bracket (210) and form the front and rear slides (221).

5. The headrest (1) according to claim 4, characterized in that, There are two sliders (120), and the two sliders (120) are respectively disposed adjacent to the left and right sides of the headrest frame assembly (100); and There are two front and rear sliding seats (220) respectively connected to the two ends of the support bracket (210), and the two sliding members (120) are matched one-to-one with the two front and rear sliding seats (220).

6. The headrest (1) according to claim 4, characterized in that, The front and rear slide rail seats (220) are also provided with limiting holes (223), the limiting holes (223) penetrating one side wall of the front and rear slide rails (221); and, The sliding arm (121) has a connecting hole (122) on the side facing the limiting hole (223), and the connecting hole (122) is used to fix the limiting pin; When the sliding member (120) slides to its limit position in the front and rear sliding grooves (221), the limiting pin abuts against the front or rear sidewall of the limiting hole (223).

7. The headrest (1) according to claim 6, characterized in that, The limiting pins are multiple, and the multiple limiting pins include: The first limiting pin, the upper side of the first limiting pin abuts against the upper sidewall of the limiting hole (223); The second limiting pin is spaced apart and positioned directly below the first limiting pin, and the lower side of the second limiting pin abuts against the lower sidewall of the limiting hole (223). When the sliding member (120) slides to its limit position in the front and rear sliding grooves (221), the first limiting pin and the second limiting pin simultaneously abut against the front or rear sidewall of the limiting hole (223).

8. The headrest (1) according to claim 7, characterized in that, The front sidewall of the limiting hole (223) is provided with a first limiting protrusion (224), and when the first limiting pin and the second limiting pin abut against the front sidewall of the limiting hole (223), the upper sidewall of the first limiting protrusion (224) and the limiting hole (223) abut against the opposite sides of the first limiting pin, and the lower sidewall of the first limiting protrusion (224) and the limiting hole (223) abut against the opposite sides of the second limiting pin; and / or, The rear sidewall of the limiting hole (223) is provided with a second limiting protrusion (225). When the first limiting pin and the second limiting pin abut against the rear sidewall of the limiting hole (223), the second limiting protrusion (225) and the upper sidewall of the limiting hole (223) abut against the opposite sides of the first limiting pin, and the second limiting protrusion (225) and the lower sidewall of the limiting hole (223) abut against the opposite sides of the second limiting pin.

9. The headrest (1) according to claim 1, characterized in that, The bottom of the front and rear slide grooves (221) is provided with a fixed post (227), and the side of the sliding arm (121) facing the bottom of the front and rear slide grooves (221) is provided with an installation groove (125). One end of the elastic member (300) is sleeved on the fixed post (227), and the other end of the elastic member (300) extends into the installation groove (125).

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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