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 lifting chute, and the lifting chute extends along the height direction of the headrest frame assembly; the support assembly is suitable for being connected with a chair back, the support assembly is provided with a front-and-back sliding groove, and the front-and-back sliding groove extends in the front-and-back direction; the sliding part is arranged between the headrest frame assembly and the support assembly, one side of the sliding part is connected into the lifting sliding groove in a sliding mode, the other side of the sliding part is provided with a sliding arm, and the sliding arm is connected into the front-back sliding groove in a sliding mode. According to the headrest, the headrest frame assembly can be adjusted in the front-back direction and the up-down direction according to the position of the head of a user, adjustment is more sensitive, and 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 and / or downward with the user's head to adjust the front-to-back and up-and-down position of the headrest, thereby enabling 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 adjustment sensitivity in the front-back and up-down directions, making it difficult to quickly adjust in front-back and up-down directions 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 be adjusted in both the front-to-back and up-and-down directions 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 having a lifting slide groove extending along the height direction of the headrest frame assembly; a support assembly adapted to be connected to a chair back, having front and rear slide grooves extending along the front-rear direction; and a sliding member disposed between the headrest frame assembly and the support assembly, one side of the sliding member slidably connected to the lifting slide groove, and the other side of the sliding member having a sliding arm slidably connected to the front and rear slide grooves.

[0007] Therefore, the headrest according to the present invention can adjust the headrest frame assembly in the front-back and up-down directions 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 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.

[0009] According to some specific embodiments of the present invention, the sliding member includes: a first slider, which is disposed between the headrest frame assembly and the support assembly, and the first slider forms the sliding arm; a second slider, at least one of the second slider and the first slider extending into the lifting slide groove; wherein, along the front-rear 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.

[0010] According to some specific embodiments of the present invention, the first slider and the second slider are respectively stopped on opposite sides of the slide groove seat, and one of the first slider and the second slider is provided with a sliding boss, the sliding boss can slide into the lifting slide groove, and the other of the first slider and the second slider is connected to the sliding boss.

[0011] 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.

[0012] 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.

[0013] According to some specific embodiments of the present invention, 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 front and rear slide seats, which are respectively connected to both ends of the support bracket; and there are two sliding members, one side of each sliding member is slidably connected to one of the lifting slides, and the other side is slidably connected to the front and rear slides.

[0014] 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.

[0015] According to some specific embodiments of the present invention, the headrest further includes: a first elastic member disposed between the sliding member and the lifting slide groove, and the first elastic member is used to generate an elastic force that drives the headrest frame assembly to slide upward relative to the sliding member; and a second elastic member disposed between the sliding arm and the bottom wall of the front and rear slide grooves, and the second elastic member is used to generate an elastic force that drives the sliding member to slide forward relative to the support assembly.

[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 be adjusted in the front-back and up-down directions 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 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 according to the present invention;

[0021] Figure 2 yes Figure 1 A magnified structural diagram 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 front and rear sliding groove seats and the sliding member according to an embodiment of the present utility model;

[0024] Figure 5 This is an exploded view of the front and rear sliding groove seats and the sliding member according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the sliding member according to an embodiment of the present utility model;

[0026] Figure 7 This is a structural schematic diagram of the slider according to another perspective of an embodiment of the present utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the front and rear sliding groove seats according to an embodiment of the present utility model;

[0028] Figure 9 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.

[0029] Figure label:

[0030] 1. Headrest;

[0031] 100. Headrest frame assembly; 110. Headrest frame; 120. Lifting slide rail base; 121. Lifting slide rail;

[0032] 200, bracket assembly; 210, support bracket; 220, front and rear sliding groove seat; 221, front and rear sliding groove; 222, limiting hole; 223, first limiting protrusion; 224, second limiting protrusion; 225, gear slot; 226, fixing post;

[0033] 300, Slider; 310, First slider; 311, Sliding arm; 312, Connecting hole; 313, Sliding boss; 314, First sliding protrusion; 315, Mounting groove; 320, Second slider; 321, Slider connecting hole;

[0034] 410. First elastic element; 420. Second elastic element;

[0035] 500. Lifting support. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0039] In the description of this utility model, "multiple" means two or more, and "several" means one or more.

[0040] The headrest 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] like Figures 1-9 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.

[0042] According to an embodiment of the present utility model, the headrest 1 includes a headrest frame assembly 100, a support assembly 200, and a slider 300.

[0043] The headrest frame assembly 100 is provided with a lifting slide 121, which extends along the height direction of the headrest frame assembly 100. The support assembly 200 is adapted to be connected to the chair back, and the support assembly 200 is provided with front and rear slides 221, which extend along the front and rear direction. The sliding member 300 is provided between the headrest frame assembly 100 and the support assembly 200. One side of the sliding member 300 is slidably connected to the lifting slide 121, and the other side of the sliding member 300 is provided with a sliding arm 311, which is slidably connected to the front and rear slides 221.

[0044] The headrest 100 can have multiple lifting slides 121 and multiple front and rear slides 121, and multiple sliding members 300. These multiple sliding members 300 are slidably fitted into the multiple lifting slides 121 and the multiple front and rear slides 121, respectively. This configuration allows for multi-point connections between the headrest frame assembly 100 and the support assembly 200, improving 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 up-down and front-back directions. This improves the adjustment stability of the headrest 1, enabling it to better support the user's head and providing a better user experience.

[0045] According to an embodiment of the present invention, the headrest 1 has a lifting groove 121 provided on the headrest frame assembly 100. One side of the sliding member 300 is slidably connected to the lifting groove 121, and the other side of the sliding member 300 is connected to the support assembly 200. With this configuration, the sliding member 300 can slide along the lifting groove 121. Since the support assembly 200 is connected to the chair back, the support assembly 200 and the sliding member 300 can remain stationary relative to the chair back, thereby allowing the headrest frame assembly 100 to slide vertically relative to the support assembly 200 and the sliding member 300. Therefore, when the user's head presses against the headrest 1, the headrest frame assembly 100 can move downwards with the user's head. This allows for vertical adjustment of the position of the headrest frame assembly 100, thereby improving the fit between the headrest 1 and the user's head and enhancing the user's comfort when leaning against the headrest 1.

[0046] Furthermore, the support assembly 200 is provided with front and rear sliding grooves 221, and the other side of the slider 300 is provided with a sliding arm 311, which is slidably connected to the front and rear sliding grooves 221. Since the support assembly 200 is connected to the chair back, that is, the support assembly 200 can be stationary relative to the chair back, the headrest frame assembly 100 and the slider 300 can move relative to the support assembly 200 in the front-back direction. Therefore, 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 the position of the headrest frame assembly 100 in the front-back direction, thereby improving the fit between the headrest 1 and the user's head, so that the headrest 1 can better support the user's head.

[0047] Furthermore, by adding a slider 300 at the connection between the support assembly 200 and the headrest frame assembly 100, and with the slider 300 respectively fitting into the lifting slide 121 and the front and rear slide 221, the up-down adjustment structure and the front and rear adjustment structure of the headrest 1 can both be integrated at the slider 300. In the front-rear direction, the lifting slide 121 and the front and rear slide 221 can be closer to the front side of the headrest frame assembly 100. 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 against the headrest 1, the headrest frame assembly 100 is more likely to move downward and backward under the pressure of the head, thereby improving the adjustment sensitivity of the headrest frame assembly 100, so that the adjustment effect of the headrest frame assembly 100 in the up-down and front-rear directions is better, and the user experience is better.

[0048] Thus, the headrest 1 according to the present utility model embodiment can adjust the headrest frame assembly 100 in the front-back and up-down directions according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[0049] In some specific embodiments of this utility model, such as Figures 3-5As 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. For example, 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 sliding member 300 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 121 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 Figures 6-7 As shown, the slider 300 includes a first slider 310 and a second slider 320.

[0054] The first slider 310 is disposed between the headrest frame assembly 100 and the support assembly 200, and the first slider 310 forms a sliding arm 311. At least one of the second slider 320 and the first slider 310 extends into the lifting groove 121.

[0055] Along the front-back direction of the headrest 1, the first slider 310 and the second slider 320 are located on opposite sides of the lifting slide seat 120, and the first slider 310 and the second slider 320 are connected.

[0056] The first slider 310 can be located on the rear side of the lifting slide 121 and connected to the support assembly 200, that is, the first slider 310 is a rear slider. Furthermore, a sliding arm 311 can be constructed on the rear side of the first slider 310. The sliding arm 311 can extend in the front-back direction, so that the sliding arm 311 can be adjacent to the support assembly 200, which facilitates the connection between the first slider 310 and the support assembly 200. In addition, the second slider 320 can be located on the front side of the lifting slide seat 120 and connected to the first slider 310, that is, the second slider 320 can be a front slider.

[0057] For example, the first slider 310 and the second slider 320 can be connected by bolts. For instance, multiple slider connection holes 321 can be provided on the first slider 310 and the second slider 320 respectively. The bolts pass through the slider connection holes 321 on the first slider 310 and the second slider 320 in sequence to connect and fix the first slider 310 and the second slider 320.

[0058] In addition, the width of the first slider 310 and the second slider 320 can both be greater than the width of the lifting slide 121. The second slider 320 can abut against the front side of the lifting slide seat 120, and the first slider 310 can abut against the rear side of the lifting slide 121. That is, the first slider 310 and the second slider 320 clamp the lifting slide seat 120 to limit the relative position of the slider 300 and the lifting slide seat 120 in the front-back direction, so as to prevent the slider 300 and the lifting slide seat 120 from moving relative to each other in the front-back direction, so that the slider 300 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 specific embodiments of this utility model, such as Figure 4 As shown, the first slider 310 and the second slider 320 are respectively stopped on opposite sides of the slide groove seat, and one of the first slider 310 and the second slider 320 is provided with a sliding boss 313. The sliding boss 313 can slide into the lifting slide groove 121, and the other of the first slider 310 and the second slider 320 is connected to the sliding boss 313.

[0060] For example, a sliding boss 313 can be constructed only on the first slider 310. The sliding boss 313 can be located on the front side of the first slider 310 and can slidably extend into the lifting groove 121. The second slider 320 is connected to the sliding boss 313 to achieve the connection between the first slider 310 and the second slider 320. For example, multiple slider connection holes 321 can be provided on the sliding boss 313 and multiple slider connection holes 321 can be provided on the second slider 320. The multiple slider connection holes 321 of the sliding boss 313 and the multiple slider connection holes 321 of the second slider 320 are connected one-to-one by fasteners.

[0061] Alternatively, a sliding boss 313 can be constructed only on the second slider 320. The sliding boss 313 can be located on the rear side of the second slider 320. The sliding boss 313 can slide into the lifting groove 121, and the first slider 310 is connected to the sliding boss 313 to realize the connection between the first slider 310 and the second slider 320.

[0062] Alternatively, sliding bosses 313 can be provided on both the first slider 310 and the second slider 320. That is, the front side of the first slider 310 is provided with a sliding boss 313, and the rear side of the second slider 320 is also provided with a sliding boss 313. The sliding bosses 313 on the first slider 310 and the sliding bosses 313 on the second slider 320 can both slide into the lifting groove 121, and the sliding bosses 313 on the first slider 310 and the sliding bosses 313 on the second slider 320 are connected to each other, thereby realizing the connection between the first slider 310 and the second slider 320.

[0063] With this configuration, when the sliding boss 313 extends into the lifting slide groove 121, the two side walls of the sliding boss 313 in the width direction can respectively abut against the two side walls of the lifting slide groove 121 in the width direction. This can prevent the sliding member 300 from wobbling relative to the lifting slide groove seat 120 in the width direction of the lifting slide groove 121, thereby improving the stability of the connection between the sliding member 300 and the lifting slide groove 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.

[0064] Furthermore, when the slider 300 moves upward along the lifting slide 121 to its limit position, the upper end of the sliding boss 313 can abut against the upper side wall of the lifting slide 121, and when the slider 300 moves downward along the lifting slide 121 to its limit position, the lower end of the sliding boss 313 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.

[0065] In some specific embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the first slider 310 has a plurality of first sliding protrusions 314 protruding from the side facing the lifting slide seat 120, and the plurality of first sliding protrusions 314 abut against one side of the lifting slide seat 120 to reduce the friction between the first slider 310 and the lifting slide seat 120.

[0066] And / or, the second slider 320 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 320 and the lifting slide seat 120.

[0067] In other words, the first sliding protrusion 314 can be provided only on the first slider 310; or, the second sliding protrusion can be provided only on the second slider 320; or, the first sliding protrusion 314 can be provided on the first slider 310 and the second sliding protrusion can be provided on the second slider 320.

[0068] The first sliding protrusion 314 can extend along the width direction of the first slider 310, and multiple first sliding protrusions 314 can be distributed at intervals along the length direction of the first slider 310. By setting the first sliding protrusion 314, the contact area between the first slider 310 and the lifting slide seat 120 can be reduced, thereby reducing the friction between the first slider 310 and the lifting slide seat 120. The first slider 310 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.

[0069] Furthermore, the second sliding protrusion can extend along the width direction of the second slider 320, and multiple second sliding protrusions can be distributed at intervals along the length direction of the second slider 320. By setting the second sliding protrusion, the contact area between the second slider 320 and the lifting slide seat 120 can be reduced, thereby reducing the friction between the second slider 320 and the lifting slide seat 120. The second slider 320 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.

[0070] Furthermore, the outer contour of the first sliding protrusion 314 can be constructed as an arc surface, which can further reduce the contact area between the first sliding protrusion 314 and the lifting slide seat 120, thereby reducing the friction between the first sliding protrusion 314 and the lifting slide seat 120. The friction between the first slider 310 and the lifting slide seat 120 can be even smaller, so that the first slider 310 can slide up and down relative to the lifting slide seat 120.

[0071] 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 320 and the lifting slide seat 120 can be even smaller, so that the second slider 320 can slide up and down relative to the lifting slide seat 120.

[0072] In some specific embodiments of this utility model, such as Figure 2 As shown, the bracket assembly 200 includes a support bracket 210 and front and rear sliding seats 220.

[0073] 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.

[0074] 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.

[0075] In some specific embodiments of this utility model, such as Figure 4 and Figure 9 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 225 can be provided on the outer circumferential surface of the front and rear sliding seats 220. The multiple stop grooves 225 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 225 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.

[0076] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the support assembly 200 may also include a lifting support 500. The support bracket 210 can be connected to the chair back through the lifting support 500, thereby allowing the headrest 1 to be adjusted relative to the chair back using the lifting support 500.

[0077] 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 adjacent to the left and right sides of the headrest frame 110; there are two front and rear slide seats 220, which are respectively connected to the two ends of the support bracket 210; and there are two sliding members 300, each of which has one side slidably connected to a lifting slide 121 and the other side slidably connected to the front and rear slide seats 221.

[0078] The headrest frame 110 has two lifting slide rails 120, each located adjacent to the left and right sides of the headrest frame 110. There are also two sliding members 300, each with one side slidably connected to a lifting slide rail 121. This configuration allows both sides of the headrest frame 110 to slidably engage with the support assembly 200 via the sliding members 300. This improves the connection stability between the headrest frame assembly 110 and the support assembly 200, preventing the headrest frame assembly 100 from wobbling relative to the support assembly 200 in the left-right direction. The headrest frame assembly 100 can move more stably up and down relative to the support assembly 200, providing more stable support for the user's head. Furthermore, the load on the support assembly 200 is more evenly distributed. This reduces wobbling of the headrest frame assembly 100 relative to the support assembly 200 and effectively prevents damage to the connection structure between the headrest frame assembly 100 and the support assembly 200, thus extending the lifespan of the headrest 1.

[0079] In addition, there are two front and rear sliding groove seats 220, which are respectively connected to both ends of the support bracket 210, and two sliding members 300, with the other side of each sliding member 300 slidably connected to the front and rear sliding grooves 221. With this configuration, both the left and right sides of the headrest frame 110 can slidably engage with the bracket assembly 200, resulting in higher connection stability between the headrest frame assembly 100 and the bracket assembly 200. This prevents the headrest frame assembly 100 from wobbling relative to the bracket assembly 200 in the left and right directions, and allows the headrest frame assembly 100 to move more stably relative to the bracket assembly 200 in the front and back directions. This allows the headrest 1 to provide more stable support for the user's head, and the load-bearing force on the bracket assembly 200 can be more evenly distributed. While reducing the wobbling of the headrest frame assembly 100 relative to the bracket assembly 200, it can also effectively prevent damage to the connection structure between the headrest frame assembly 100 and the bracket assembly 200, thereby extending the service life of the headrest 1.

[0080] Therefore, by adjusting the up-and-down and back-and-forth movement of the headrest frame assembly 100 at the connection between the headrest frame assembly 100 and the support assembly 200, not only can the up-and-down and back-and-forth movements of the headrest 1 be adjusted, but the adjustability of the headrest 1 is also enhanced, and the adjustment of the headrest 1 in the up-and-down and back-and-forth movements is more sensitive.

[0081] In some specific embodiments of this utility model, such as Figure 8 and Figure 9 As shown, the front and rear slide rail seats 220 are also provided with limiting holes 222, which penetrate one side wall of the front and rear slide rails 221. Additionally, the sliding arm 311 is provided with a connecting hole 312 on the side facing the limiting hole 222. The connecting hole 312 is used to fix the limiting pin (not shown in the figure).

[0082] When the slider 300 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 222.

[0083] A limiting hole 222 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 312 can be provided on one side of the sliding arm 311 in the left and right directions. The limiting pin is detachably installed in the limiting hole 222.

[0084] In this way, when assembling the sliding arm 311 and the front and rear slide grooves 221, the limiting pin can be removed so that the sliding arm 311 can be inserted into the front and rear slide grooves 221. After the sliding arm 311 is installed in place, one end of the limiting pin is connected to the limiting hole 222, and the other end of the limiting pin protrudes from the side of the sliding arm 311 facing the limiting hole 222.

[0085] Therefore, the sliding range of the sliding arm 311 in the front and rear sliding grooves 121 can be limited by the mutual abutment between the limiting pin and the side wall of the limiting hole 222.

[0086] For example, when the sliding arm 311 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 222, thereby preventing the sliding arm 311 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.

[0087] When the sliding arm 311 slides forward to its limit position within the front and rear slide grooves 221, the limiting pin can abut against the front side wall of the limiting hole 222, thereby preventing the sliding arm 311 from sliding forward excessively. On the one hand, this limits the forward adjustment range of the headrest frame assembly 100, so that the headrest frame assembly 100 can stably fit and support the user's head, making the user experience more comfortable. On the other hand, it prevents the sliding arm 311 from disengaging from the front and rear slide grooves 221, ensuring that the sliding member 300 is stably connected to the front and rear slide groove seats 220.

[0088] Furthermore, there can be multiple limit pins, and the multiple limit pins may include a first limit pin and a second limit pin.

[0089] The upper side of the first limiting pin abuts against the upper side wall of the limiting hole 222, and the second limiting pin is spaced apart and 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 222.

[0090] When the slider 300 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 222.

[0091] 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 311. 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 311.

[0092] Specifically, when the sliding arm 311 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 222. Conversely, when the sliding arm 311 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 222. This arrangement allows multiple limiting pins to simultaneously abut against the sidewall of the limiting hole 222, which helps improve the stability of the limiting of the sliding arm 311 and the front and rear slide groove seats 220.

[0093] Correspondingly, multiple connecting holes 312 can also be provided on the side of the sliding arm 311 facing the limiting hole 222. The multiple connecting holes 312 can be arranged in multiple rows and columns along the front-back direction and the up-down direction.

[0094] For example, two connecting holes 312 can be provided on the upper side adjacent to the sliding arm 311. The two connecting holes 312 can be distributed at intervals along the length direction of the sliding arm 311. Two first limiting pins can be connected to the two connecting holes 312 on the upper side in a one-to-one correspondence. At the same time, two connecting holes 312 can also be provided on the lower side adjacent to the sliding arm 311. The two connecting holes 312 can also be distributed at intervals along the length direction of the sliding arm 311. Two second limiting pins can be connected to the two connecting holes 312 on the lower side in a one-to-one correspondence.

[0095] In some specific embodiments of this utility model, such as Figure 8 and Figure 9 As shown, the front sidewall of the limiting hole 222 is provided with a first limiting protrusion 223. When the first limiting pin and the second limiting pin abut against the front sidewall of the limiting hole 222, the first limiting protrusion 223 and the upper sidewall of the limiting hole 222 abut against the opposite sides of the first limiting pin, and the first limiting protrusion 223 and the lower sidewall of the limiting hole 222 abut against the opposite sides of the second limiting pin.

[0096] With this configuration, when the sliding arm 311 slides forward along the front and rear slide grooves 221 to its limit position, the upper sidewalls of the first limiting protrusion 223 and the limiting hole 222 can clamp the first limiting pin on the front side, and the lower sidewalls of the second limiting protrusion 224 and the limiting hole 222 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 300 from wobbling relative to the front and rear slide groove seats 220 in the vertical direction, so that the sliding member 300 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.

[0097] In some specific embodiments of this utility model, such as Figure 8 and Figure 9 As shown, the rear sidewall of the limiting hole 222 is provided with a second limiting protrusion 224. When the first limiting pin and the second limiting pin abut against the rear sidewall of the limiting hole 222, the second limiting protrusion 224 and the upper sidewall of the limiting hole 222 abut against the opposite sides of the first limiting pin, and the second limiting protrusion 224 and the lower sidewall of the limiting hole 222 abut against the opposite sides of the second limiting pin.

[0098] With this configuration, when the sliding arm 311 slides backward along the front and rear slide grooves 221 to its limit position, the upper sidewall of the second limiting protrusion 224 and the limiting hole 222 can clamp the rear first limiting pin, and the lower sidewall of the second limiting protrusion 224 and the limiting hole 222 can clamp the rear second limiting pin. 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 300 from wobbling relative to the front and rear slide groove seats 220 in the vertical direction, so that the sliding member 300 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.

[0099] In some specific embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the headrest 1 also includes a first elastic element 410.

[0100] The first elastic element 410 is disposed between the sliding element 300 and the lifting slide 121, and the first elastic element 410 is used to generate an elastic force that drives the headrest frame assembly 100 to slide upward relative to the sliding element 300.

[0101] For example, the first elastic element 410 can be a spring.

[0102] The first elastic element 410 may be disposed between the sliding element 300 and the lifting slide seat 120. For example, one end of the first elastic element 410 is connected to the sliding element 300, and the other end of the first elastic element 410 is connected to the lower side of the lifting slide seat 120, so as to stretch the first elastic element 410 when the lifting slide seat 120 moves downward relative to the sliding element 300.

[0103] 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 300. At this time, the slider 300 moves upward along the lifting slide 121, and the slider 300 gradually moves away from the lower side of the lifting slide seat 120, thereby stretching the first elastic element 410. This allows the first elastic element 410 to generate an elastic restoring force that drives the lifting slide seat 120 to move upward relative to the slider 300. In this way, when the user's head moves forward, the first elastic element 410 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 first elastic element 410 can drive the headrest frame assembly 100 to move upward relative to the support assembly 200 and return to its original position.

[0104] In some other specific embodiments of this utility model, one end of the first elastic member 410 is connected to the sliding member 300, and the other end of the first elastic member 410 is connected to the upper side of the lifting slide seat 120, so as to compress the first elastic member 410 when the lifting slide seat 120 moves downward relative to the sliding member 300.

[0105] 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 300. At this time, the slider 300 moves upward along the lifting slide 121 and gradually approaches the upper side of the lifting slide seat 120, thereby compressing the first elastic element 410. This allows the first elastic element 410 to generate an elastic restoring force that drives the lifting slide seat 120 to move upward relative to the slider 300. In this way, when the user's head moves forward, the first elastic element 410 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 first elastic element 410 can drive the headrest frame assembly 100 to move upward relative to the support assembly 200 and return to its original position.

[0106] In addition, multiple first elastic elements 410 can be provided, and multiple first elastic elements 410 can be connected to the upper and lower sides of the lifting slide seat 120 and between the sliding element 300 respectively. In this way, the headrest frame assembly 100 can be driven to move relative to the support assembly 200 through multiple first elastic elements 410, which is beneficial to improve the stability of the adaptive adjustment of the headrest 1 and the adjustment effect is better.

[0107] In some specific embodiments of this utility model, such as Figure 3 and Figure 5 As shown, the second elastic element 420 is disposed between the bottom wall of the sliding arm 311 and the front and rear sliding grooves 221, and the second elastic element 420 is used to generate an elastic force that drives the sliding member 300 to slide forward relative to the support assembly 200.

[0108] For example, Figure 7 and Figure 8 As shown, a fixing post 226 can be provided at the bottom of the front and rear slide grooves 221, and the fixing post 226 can protrude forward from the bottom of the front and rear slide grooves 221. A mounting groove 315 is provided on the side of the sliding arm 311 facing the bottom of the front and rear slide grooves 221. One end of the second elastic member 420 can be sleeved on the fixing post 226, and the other end of the second elastic member 420 can extend into the mounting groove 315. This can prevent the second elastic member 420 from shaking along its radial direction, thereby improving the fixing stability of the second elastic member 420. The second elastic member 420 can provide elastic restoring force more stably.

[0109] Specifically, 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. That is, the sliding arm 311 will move backward relative to the front and rear sliding groove seats 220. At this time, the sliding arm 311 will move backward along the front and rear sliding grooves 221, and the sliding arm 311 will gradually approach the bottom of the front and rear sliding grooves 221, thereby compressing the second elastic element 420. This allows the second elastic element 420 to generate an elastic restoring force that drives the sliding arm 311 to move forward relative to the front and rear sliding grooves 221. In this way, when the user's head moves forward, the second elastic element 420 can drive the sliding arm 311 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 second elastic element 420 can drive the sliding arm 311 to move forward relative to the front and rear sliding grooves 221 and return to its original position.

[0110] The following description, with reference to the accompanying drawings, describes an ergonomic chair according to an embodiment of the present invention.

[0111] 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.

[0112] 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 and up-down directions according to the position of the user's head, and the adjustment is more sensitive, resulting in a better user experience.

[0113] The other components and operations 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.

[0114] 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.

[0115] 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 lifting slide (121), and the lifting slide (121) extends along the height direction of the headrest frame assembly (100); A support assembly (200) adapted to be connected to a chair back, and the support assembly (200) having front and rear sliding grooves (221) extending in the front-rear direction; A sliding member (300) is disposed between the headrest frame assembly (100) and the support assembly (200). One side of the sliding member (300) is slidably connected to the lifting slide groove (121), and the other side of the sliding member (300) is provided with a sliding arm (311), which is slidably connected to the front and rear slide grooves (221).

2. 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).

3. The headrest (1) according to claim 2, characterized in that, The slider (300) includes: A first slider (310) is disposed between the headrest frame assembly (100) and the support assembly (200), and the first slider (310) forms the sliding arm (311). The second slider (320) and at least one of the second slider (320) and the first slider (310) extend into the lifting groove (121); Along the front-back direction of the headrest (1), the first slider (310) and the second slider (320) are located on opposite sides of the lifting slide seat (120), and the first slider (310) is connected to the second slider (320).

4. The headrest (1) according to claim 3, characterized in that, The first slider (310) and the second slider (320) are respectively stopped on opposite sides of the slide seat, and one of the first slider (310) and the second slider (320) is provided with a sliding boss (313), which is slidably extended into the lifting slide (121), and the other of the first slider (310) and the second slider (320) is connected to the sliding boss (313).

5. The headrest (1) according to claim 3, characterized in that, The first slider (310) has a plurality of first sliding protrusions (314) protruding from the side facing the lifting slide seat (120), and the plurality of first sliding protrusions (314) abut against one side of the lifting slide seat (120) to reduce the friction between the first slider (310) and the lifting slide seat (120); and / or, The second slider (320) has a plurality of second sliding protrusions protruding from one side of 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 (320) and the lifting slide seat (120).

6. The headrest (1) according to claim 2, 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).

7. The headrest (1) according to claim 6, 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, The front and rear sliding seats (220) are two in number and are respectively connected to both ends of the support bracket (210); and, There are two sliding members (300), one side of each sliding member (300) is slidably connected to one of the lifting slide grooves (121), and the other side is slidably connected to the front and rear slide grooves (221).

8. The headrest (1) according to claim 6, characterized in that, The front and rear slide rail seats (220) are also provided with limiting holes (222), the limiting holes (222) penetrating one side wall of the front and rear slide rails (221); and, The sliding arm (311) has a connecting hole (312) on the side facing the limiting hole (222), and the connecting hole (312) is used to fix the limiting pin. When the sliding member (300) 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 (222).

9. The headrest (1) according to claim 1, characterized in that, Also includes: A first elastic element (410) is disposed between the sliding element (300) and the lifting slide (121), and the first elastic element (410) is used to generate an elastic force that drives the headrest frame assembly (100) to slide upward relative to the sliding element (300); The second elastic element (420) is disposed between the sliding arm (311) and the bottom wall of the front and rear sliding grooves (221), and the second elastic element (420) is used to generate an elastic force that drives the sliding element (300) to slide forward relative to the support assembly (200).

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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