An armrest and a chair

Abstract

The utility model relates to the field of seat, disclose a handrail and chair, can lock reliable and convenient operation, the utility model discloses a support is equipped with first locking assembly, and first locking assembly includes first clamping piece and with the first clamping piece connection's first elastic piece, the adjustable seat is slidably arranged in the support, and the adjustable seat is equipped with a plurality of first clamping groove along the sliding direction, and first locking assembly is located below first clamping groove, and first elastic piece is located the side of first clamping groove, when driving first clamping piece moves to the direction close to first elastic piece, can make first clamping piece and first clamping groove separate, and first elastic piece drives first clamping piece to move to the direction of first clamping groove through the elastic recovery force, makes first clamping piece and first clamping groove clamping.

Description

Technical Field

[0001] This utility model relates to the field of seating, and in particular to an armrest and a chair. Background Technology

[0002] As a common piece of furniture in daily life and office settings, armrests are a core component for improving user comfort. By supporting the user's arms, they optimize the posture experience when working or resting.

[0003] The existing locking mechanism layout design has obvious irrationality, resulting in an imbalance between ease of operation and locking stability. Some solutions place the locking mechanism on the side of the adjustment base, requiring users to turn to the side or twist their wrist to press and unlock, making the operation awkward, especially for larger users or those with limited arm mobility, making one-handed operation extremely difficult. Another solution places the locking mechanism on the top of the bracket, using a structure where the latch and latching slot fit together. Although the operation position is relatively intuitive, the top layout is susceptible to the transmission of pressure from the elbow support. When the user presses down with their elbow, the pressure is directly applied to the locking mechanism, which can easily cause the latch to accidentally disengage and unlock, resulting in unexpected sliding of the adjustment base and posing a significant safety hazard. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a handrail that is reliable in locking and easy to operate.

[0005] This utility model also proposes a chair with the above-mentioned armrests.

[0006] On one hand, the handrail according to an embodiment of the present utility model includes: The bracket is provided with a first locking component, the first locking component including a first snap-fit ​​member and a first elastic member connected to the first snap-fit ​​member; An adjustment seat is slidably disposed on the bracket. The adjustment seat is provided with a plurality of first locking slots along the sliding direction. The first locking component is located below the first locking slots, and the first elastic element is located on the side of the first locking slots. When the first snap-fit ​​component is driven to move toward the first elastic component, the first snap-fit ​​component and the first snap-fit ​​slot can be separated. The first elastic element is driven by the elastic restoring force to move the first snap-fit ​​element toward the first snap-fit ​​groove, so that the first snap-fit ​​element and the first snap-fit ​​groove snap together.

[0007] According to some embodiments of the present invention, the bracket is provided with an arc-shaped sliding groove, and the adjusting seat is provided with an arc surface. The arc surface is adapted to the arc-shaped sliding groove so that the bracket can slide along the arc direction of the arc-shaped sliding groove.

[0008] According to some embodiments of the present invention, one of the bracket and the adjusting seat is provided with an arc-shaped guide groove, and the other of the bracket is provided with an arc-shaped guide block. The arc-shaped guide block can slide along the arc-shaped guide groove, and the adjusting seat can rotate relative to the bracket.

[0009] According to some embodiments of the present invention, the first snap-fit ​​member includes: A button portion is disposed within the bracket, and a portion of the button portion protrudes laterally from the bracket. A snap-fit ​​portion is provided on the button portion and protrudes upward from the bracket, and the snap-fit ​​portion can snap into the first snap-fit ​​groove.

[0010] According to some embodiments of the present invention, the bracket or the adjusting seat is provided with a mounting groove, and the first snap-fit ​​member is provided in the mounting groove and can slide along the mounting groove.

[0011] According to some embodiments of the present invention, the surface of the adjusting seat near the bracket is provided with a protrusion, and the protrusion abuts against the bracket.

[0012] According to some embodiments of the present invention, the bracket has a supporting protrusion on the side near the adjusting seat, and the supporting protrusion can abut against the adjusting seat.

[0013] According to some embodiments of the present invention, the adjusting seat is provided with a limiting groove, and a plurality of first snap-fit ​​grooves are provided in the limiting groove along the sliding direction, and the first snap-fit ​​member can move in a direction perpendicular to the sliding direction of the adjusting seat.

[0014] According to some embodiments of the present invention, the thickness of the first snap-fit ​​member at the point where it mates with the first snap-fit ​​groove increases from the side closer to the first snap-fit ​​groove to the side farther away.

[0015] On the other hand, the chair according to the present invention includes the armrests according to the above embodiments of the present invention.

[0016] The embodiments of this utility model have at least the following beneficial effects: In its natural state (without external force interfering with the first locking component), the first elastic element located on the side of the first locking slot remains in a pre-tightened state. The elastic restoring force it generates acts directly on the first locking component along a horizontal vector direction perpendicular to the sliding direction of the adjusting seat, driving the locking component to precisely embed itself upwards into the first locking slot of the adjusting seat. The mechanical limiting of the concave-convex structure, combined with the continuous support of the lateral elastic force, achieves rigid locking between the bracket and the adjusting seat. At this time, the adjusting seat can remain relatively still regardless of whether it is subjected to static loads from elbow pressure or dynamic thrusts from arm extension, completely solving the pain points of "locking loosening" and "unintended sliding" in existing technologies. Even in scenarios of slight collisions or unconscious arm exertion during office work, the risk of locking failure can be eliminated, ensuring support stability.

[0017] When a user needs to adjust the armrest position (sliding forward and backward or adjusting the arc angle), they only need to drive the first locking part towards the first elastic element (the integrated design of "button part + locking part" allows operation by pushing the button part protruding from the bracket with one hand). This overcomes the elastic force, allowing the locking part to smoothly disengage from the first locking slot and unlock. After adjusting to the target position, releasing the button part will cause the elastic restoring force of the first elastic element to drive the locking part back into the corresponding first locking slot within a short time, completing the automatic locking. The entire process requires no tools or changes in posture; the "unlock-adjust-lock" process can be completed with one hand, offering smooth and efficient operation, suitable for scenarios such as office work and gaming where frequent adjustments to the armrest posture are required.

[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: Figure 1 This is a schematic diagram of the overall structure of the handrail in an embodiment of the present utility model; Figure 2 This is an exploded structural diagram of the handrail according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the adjusting seat according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the adjusting seat and the first locking component in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the bracket according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the bracket according to an embodiment of the present utility model; Figure 7 This is a cross-sectional structural diagram of the first locking component according to an embodiment of the present utility model; Figure label: Bracket 100, first snap-fit ​​component 110, snap-fit ​​part 111, button part 112, first elastic component 120, arc-shaped slide groove 130, arc-shaped guide block 140, mounting slide groove 150, support protrusion 160; Adjustment seat 200, first locking groove 210, arc surface 220, arc-shaped guide groove 230, protrusion 240, limit groove 250. Detailed Implementation

[0020] The following will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings. It should be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the scope of protection of the present invention.

[0021] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0022] It should be noted that, unless otherwise explicitly defined, when a feature is referred to as "fixed," "connected," or "installed" on another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. The terms "fixed," "connected," and "installed" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] It should be noted that the descriptions of orientations or positional relationships indicated by terms such as up, down, left, right, top, bottom, front, back, inside, and outside used in this utility model are based on the orientations or positional relationships indicated by the accompanying drawings or embodiments. They are only for the purpose of facilitating the description of 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. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be noted that the term "and / or" used in this utility model includes any combination of one or more of the related listed items, "several" means one or more, "multiple" means two or more, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0025] It should be noted that the use of "first" and "second" in this utility model is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0026] It should be noted that, unless otherwise expressly defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and not for limiting the scope of the invention.

[0027] Reference Figures 1-7 The basic embodiment of the first aspect of this utility model provides a handrail, comprising: The bracket 100 is provided with a first locking component, which includes a first snap-fit ​​member 110 and a first elastic member 120 connected to the first snap-fit ​​member 110. The adjusting seat 200 is slidably disposed on the bracket 100. The adjusting seat 200 is provided with a plurality of first locking slots 210 along the sliding direction. The first locking component is located below the first locking slots 210, and the first elastic element 120 is located on the side of the first locking slots 210. When the first card connector 110 is driven to move toward the first elastic member 120, the first card connector 110 and the first card slot 210 can be separated. Driven by the elastic restoring force, the first elastic member 120 moves the first snap-fit ​​member 110 toward the first snap-fit ​​groove 210, so that the first snap-fit ​​member 110 and the first snap-fit ​​groove 210 snap together.

[0028] According to the embodiments of this utility model, by setting it up in this way, at least the following effects can be achieved: In a natural state (when there is no external force interfering with the first locking member 110), the first elastic member 120 located on the side of the first locking groove 210 always remains in a pre-tightened state. The elastic restoring force generated by it acts directly on the first locking member 110 along a horizontal vector direction perpendicular to the sliding direction of the adjusting seat 200. This drives the locking member to accurately embed upward into the first locking groove 210 of the adjusting seat 200. The mechanical limiting of the concave-convex structure, combined with the continuous support of the lateral elastic force, achieves a rigid lock between the bracket 100 and the adjusting seat 200. At this time, the adjusting seat 200 can remain relatively still regardless of whether it is subjected to the static load of elbow pressing down or the dynamic thrust driven by the extension of the arm, completely solving the pain points of "locking loosening" and "unexpected sliding" in the prior art; even in the case of slight collision or unconscious force exerted by the arm while working, the risk of locking failure can be eliminated, ensuring the stability of the support.

[0029] When a user needs to adjust the armrest position (sliding forward and backward or adjusting the arc angle), they only need to drive the first latching member 110 towards the first elastic element 120 (the integrated design of "button part 112 + latching part 111" allows operation by pushing the button part 112 protruding from the bracket 100 with one hand). This overcomes the elastic force, allowing the latching part 111 to smoothly disengage from the first latching groove 210, thus unlocking the position. After adjusting to the target position, releasing the button part 112 causes the elastic restoring force of the first elastic element 120 to drive the latching part 111 to re-engage into the corresponding position of the first latching groove 210 within a short time, completing the automatic locking. The entire process requires no tools or changes in posture; the "unlock-adjust-lock" process can be completed with one hand, offering smooth and efficient operation suitable for scenarios such as office work and gaming where frequent adjustments to the armrest posture are required.

[0030] In some embodiments, the bracket 100 is provided with an arc-shaped slide groove 130, and the adjusting seat 200 is provided with an arc surface 220. The arc surface 220 is adapted to the arc-shaped slide groove 130, allowing the adjusting seat 200 to slide along the arc direction of the arc-shaped slide groove 130. One of the bracket 100 and the adjusting seat 200 is provided with an arc-shaped guide groove 230, and the other is provided with an arc-shaped guide block 140. The arc-shaped guide block 140 can slide along the arc-shaped guide groove 230, and the adjusting seat 200 can rotate relative to the bracket 100. Combining the adapted design of the arc-shaped slide groove 130 and the arc surface 220, and the cooperation of the arc-shaped guide groove 230 and the guide block, the movement trajectory of the adjusting seat 200 achieves a coordinated adjustment of "angle rotation + forward and backward displacement + vertical height," forming a highly ergonomic adjustment mode. The curvature of the arc surface 220 of the adjustment seat 200 has been specially optimized to perfectly match the trajectory of the natural swing of the human arm. When the adjustment seat 200 slides along the arc-shaped slide groove 130, it can simultaneously complete the angle adjustment of 30°-60° and the fine adjustment of the position of forward and backward, and high and low. For example, when the user is typing, the elbow can be extended outward at 45° and locked, when reading, it can be folded inward at 30° to adapt, and when watching a movie, it can be leaned back at 60° to relax, so that the armrest support surface always fits the natural posture of the elbow.

[0031] This interconnected adjustment design completely breaks through the limitations of traditional armrests that can only adjust height, solving the pain points of "unsupported" and "concentrated local pressure" when some users habitually tilt their elbows while working. The close-fitting support allows the pressure on the elbow to be evenly distributed on the contact surface, avoiding soreness and numbness caused by excessive local pressure, and significantly improving the comfort of long-term use; while the cooperation between the arc-shaped guide groove 230 and the guide block can provide precise guidance for the movement of the adjustment seat 200, ensuring a smooth and jam-free sliding process, while enhancing the structure's resistance to deformation.

[0032] In some embodiments, the first connector 110 includes: A button portion 112 is disposed within the bracket 100, and a portion of the structure of the button portion 112 protrudes laterally from the bracket 100. The snap-fit ​​part 111 is provided on the button part 112 and protrudes upward from the bracket 100. The snap-fit ​​part 111 can snap into the first snap-fit ​​groove 210.

[0033] In this configuration, the first latching component 110 adopts an integrated structure of "button part 112 + latching part 111", with the button part 112 protruding from the side of the bracket 100, making the unlocking operation more ergonomic. Users do not need to bend over or twist their wrists; they can simply push the button part 112 with one hand to disengage the latching part 111 from the latching slot. The operation is natural and smooth, especially suitable for the need to adjust the armrest without interrupting work during office work. The rigid connection design of the button part 112 and the latching part 111 also avoids operational delays caused by relative looseness, ensuring the synchronization of unlocking and locking actions.

[0034] In some embodiments, the bracket 100 or the adjustment seat 200 is provided with a mounting groove 150, and the first snap-fit ​​member 110 is disposed in the mounting groove 150 and can slide along the mounting groove 150. The design of the mounting groove 150 and the limiting groove 250 forms a dual guiding and limiting mechanism: the first snap-fit ​​member 110 is disposed in the mounting groove 150, and its sliding trajectory is precisely constrained to ensure that the snap-fit ​​part 111 is always inserted into or disengaged from the first snap-fit ​​groove 210 in the vertical direction, avoiding "incomplete snap-fit" or "unlocking jam" caused by the snap-fit ​​member offset; the limiting groove 250 of the adjustment seat 200 arranges the first snap-fit ​​groove 210 in a regular manner, and at the same time limits the movement direction of the snap-fit ​​member, further improving the positioning accuracy of multi-level adjustment, allowing users to quickly find a support position that suits their posture.

[0035] In some embodiments, the surface of the adjusting seat 200 near the bracket 100 is provided with a protrusion 240, which abuts against the bracket 100. The protrusion 240 protrudes partially from the surface of the adjusting seat 200. Due to the relative sliding between the bracket 100 and the adjusting seat 200, the protrusion 240 can reduce the contact area between the bracket 100 and the adjusting seat 200, thereby reducing the friction between them.

[0036] In some embodiments, the bracket 100 has a supporting protrusion 160 on the side near the adjusting seat 200, and the supporting protrusion 160 can abut against the adjusting seat 200. The supporting protrusion 160 can reduce the contact area between the bracket 100 and the adjusting seat 200 (or the protrusion 240 provided on the adjusting seat 200) and reduce the friction between them.

[0037] In some embodiments, the adjusting seat 200 is provided with a limiting groove 250, and a plurality of first engaging grooves 210 are disposed in the limiting groove 250 along the sliding direction. The first engaging member 110 can move in a direction perpendicular to the sliding direction of the adjusting seat 200. The first engaging member 110 is limited within the limiting groove 250, and the limiting groove 250 serves to limit and guide.

[0038] The protrusion 240 of the adjusting seat 200 and the supporting protrusion 160 of the bracket 100 form a "line contact" or "point contact" engagement. Compared with the traditional "surface contact" design, this significantly reduces the contact area between the two, thereby reducing friction during relative sliding and making the adjusting seat 200 slide more smoothly and effortlessly along the arc-shaped groove 130 or a straight trajectory. At the same time, the smaller contact area reduces the accumulation of dust and debris on the contact surface, avoiding adjustment failure caused by foreign objects getting stuck and extending the service life of the structure. The rigid contact between the protrusion 240 and the supporting protrusion 160 also enhances the support stability of the adjusting seat 200, preventing wobbling under stress.

[0039] In some embodiments, the thickness of the first latching member 110 at the point where it mates with the first latching slot 210 increases from the side closer to the first latching slot 210 to the side farther away. The mating point between the first latching member 110 and the first latching slot 210 adopts a thickness gradient design of "thinner near the slot end and thicker far from the slot end," which takes into account both smooth insertion and secure locking: the thin end structure allows the latching part 111 to quickly align and embed into the first latching slot 210, reducing the difficulty of alignment during adjustment after unlocking; the thick end structure enhances the load-bearing capacity of the latching part 111, preventing the latching part 111 from bending and deforming due to stress after long-term use, and ensuring the structural stability in the locked state.

[0040] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", and "extended embodiment" may be used to describe several embodiments of the present invention, and the specific features, structures, materials or characteristics of the several embodiments may be combined in accordance with the principles and spirit of the present invention.

[0041] Although some embodiments of the present utility model have been shown and described in this specification, the present utility model should not be limited to the above embodiments. As long as they achieve the technical effects of the present utility model by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations of these embodiments within the spirit and principles disclosed in the present utility model, without departing from the principles and purpose of the present utility model, should be included within the scope of protection disclosed in the present utility model and should be considered to fall within the protection scope of the present utility model.

Claims

1. A handrail, characterized in that, include: The bracket (100) is provided with a first locking component, the first locking component including a first snap-fit ​​member (110) and a first elastic member (120) connected to the first snap-fit ​​member (110). An adjusting seat (200) is slidably disposed on the bracket (100). The adjusting seat (200) is provided with a plurality of first locking slots (210) along the sliding direction. The first locking component is located below the first locking slot (210), and the first elastic element (120) is located on the side of the first locking slot (210). When the first snap-fit ​​member (110) is driven to move toward the first elastic member (120), the first snap-fit ​​member (110) and the first snap-fit ​​groove (210) can be separated. The first elastic element (120) is driven by the elastic restoring force to move the first snap-fit ​​element (110) toward the first snap-fit ​​groove (210), so that the first snap-fit ​​element (110) and the first snap-fit ​​groove (210) snap together.

2. The handrail according to claim 1, characterized in that: The bracket (100) is provided with an arc-shaped slide groove (130), and the adjustment seat (200) is provided with an arc surface (220). The arc surface (220) is adapted to the arc-shaped slide groove (130) so that the adjustment seat (200) can slide along the arc direction of the arc-shaped slide groove (130).

3. The handrail according to claim 2, characterized in that: The bracket (100) and the adjusting seat (200) each have an arc-shaped guide groove (230) on one side and an arc-shaped guide block (140) on the other side. The arc-shaped guide block (140) can slide along the arc-shaped guide groove (230), and the adjusting seat (200) can rotate relative to the bracket (100).

4. The handrail according to claim 1, characterized in that: The first card connector (110) includes: A button part (112) is provided inside the bracket (100), and a portion of the structure of the button part (112) protrudes from the bracket (100) to the side. A snap-fit ​​portion (111) is provided on the button portion (112) and protrudes upward from the bracket (100). The snap-fit ​​portion (111) can snap into the first snap-fit ​​groove (210).

5. The handrail according to claim 1, characterized in that: The bracket (100) or the adjusting seat (200) is provided with a mounting groove (150), and the first snap-fit ​​member (110) is provided in the mounting groove (150) and can slide along the mounting groove (150).

6. The handrail according to claim 1, characterized in that: The adjustment seat (200) has a raised strip (240) on the side of the bracket (100) that abuts against the bracket (100).

7. The handrail according to claim 1 or 6, characterized in that: The bracket (100) has a supporting protrusion (160) on the side near the adjusting seat (200), and the supporting protrusion (160) can abut against the adjusting seat (200).

8. The handrail according to claim 1, characterized in that: The adjusting seat (200) is provided with a limiting groove (250), and a plurality of first snap-fit ​​grooves (210) are provided in the limiting groove (250) along the sliding direction. The first snap-fit ​​member (110) can move in a direction perpendicular to the sliding direction of the adjusting seat (200).

9. The handrail according to claim 1, characterized in that: The thickness of the first snap-fit ​​member (110) at the point where it mates with the first snap-fit ​​groove (210) increases from the side closer to the first snap-fit ​​groove (210) to the side farther away.

10. A chair, characterized in that: Including the handrail as described in any one of claims 1 to 9.

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