Seat

Abstract

The utility model discloses a seat. The seat comprises a base and a seat body, the seat cushion is arranged on the base; the armrests are arranged on the sides of the seat cushion; the backrest bracket is rotatably connected with the base; the linkage mechanism is arranged on the base and connected with the armrests, and the linkage mechanism is further connected with the backrest support in a linkage mode so that the linkage mechanism can drive the armrests to move when the backrest support rotates. According to the seat disclosed by the utility model, the backrest bracket can be linked with the armrests through the arrangement of the linkage mechanism, when a user sits on the seat and leans backwards on the backrest or lies down, the backrest and the backrest bracket can rotate relative to the base, and at the moment, the linkage mechanism can correspondingly drive the armrests to move to follow the arms of the user; and enough support is provided for the arms of the user all the time, so that the comfort of the user in using the seat is improved.

Description

Technical Field

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

[0002] Chairs are commonly seen in offices, study rooms, and other similar spaces, meeting people's needs for sitting while working, studying, or resting. Generally, a chair consists of a base, backrest, seat cushion, and armrests. When seated, a person can naturally rest their arms on the armrests, which provide support.

[0003] In related technologies, the armrests are fixed to the seat cushion. When a user sits on the seat and leans back or reclines, their center of gravity and arms will move backward as the angle of leaning back or reclining increases. This can easily cause at least part of the arm (such as the elbow) to detach from the armrest and dangle in the air, resulting in insufficient support for the arm and poor comfort for the user when using the seat. Utility Model Content

[0004] The main purpose of this invention is to provide a seat that improves user comfort when using the seat.

[0005] To achieve the above objectives, this utility model proposes a seat, which includes:

[0006] Base;

[0007] A seat cushion is provided on the base;

[0008] Armrests are located on the sides of the seat cushion;

[0009] A backrest support is rotatably connected to the base.

[0010] A linkage mechanism is connected to the armrest and is also linked to the backrest support, so that the armrest can be moved by the linkage mechanism when the backrest support rotates.

[0011] In some embodiments, the linkage mechanism includes:

[0012] The frame is movably connected to the base, the frame is drivenly connected to the backrest bracket, and can move with the backrest bracket when the backrest bracket rotates.

[0013] The handrail is installed on the frame.

[0014] In some embodiments, the handrail is slidably disposed on the frame;

[0015] The linkage mechanism also includes:

[0016] A linkage component is provided, wherein the armrest is connected to the linkage component, and the linkage component is used to drive the armrest to slide on the frame when the backrest support rotates.

[0017] In some embodiments, the linkage component includes:

[0018] A linkage assembly is disposed on the frame or the seat cushion, one end of the linkage assembly is hinged to the base, and the other end of the linkage assembly is hinged to the armrest.

[0019] In some embodiments, the linkage assembly includes a first link, a second link, and a third link, wherein the second link is rotatably disposed on the frame or the seat cushion and is located between the first link and the third link;

[0020] One end of the first connecting rod is hinged to the base, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the handrail.

[0021] In some embodiments, the first connecting rod and the second connecting rod are arranged at an angle. The first connecting rod includes a base connecting arm and a connecting rod connecting arm. The end of the base connecting arm away from the connecting rod connecting arm is hinged to the base, and the end of the connecting rod connecting arm away from the base connecting arm is hinged to the second connecting rod.

[0022] The width of the connecting arm is greater than the width of the base connecting arm; and / or, the first connecting rod has reinforcing ribs protruding from its two opposite surfaces in the thickness direction, the reinforcing ribs being disposed on the base connecting arm and extending at least partially to the connecting arm.

[0023] In some embodiments, the first link may be elastically deformable; and / or,

[0024] The third link is elastically deformable.

[0025] In some embodiments, it also includes:

[0026] Mounting bracket, connected to the base;

[0027] The armrest is slidably disposed on the base, the seat cushion, or the mounting bracket;

[0028] The linkage mechanism includes:

[0029] A linkage component is provided, wherein the armrest is connected to the linkage component, and the linkage component is used to drive the armrest to slide on the base, the seat cushion, or the mounting bracket when the backrest support rotates.

[0030] In some embodiments, the linkage component includes:

[0031] A reel assembly, comprising a first reel, a second reel, and a pull line, wherein the first reel is rotatably mounted on the base, and the pull line is wound around the first reel and the second reel;

[0032] The first reel is connected to the backrest support via a transmission, and the armrest is fixedly connected to the pull line and can move under the drive of the pull line.

[0033] In some embodiments, the backrest support is connected to a hinge shaft, and the backrest support is connected to the base via the hinge shaft to be rotatably connected to the base;

[0034] The linkage component also includes:

[0035] A transmission assembly is disposed between the hinge shaft and the first reel. The transmission assembly is connected to both the hinge shaft and the first reel, and is used to drive the first reel to rotate when the backrest support rotates.

[0036] In some embodiments, the seat further includes:

[0037] A sliding support assembly is connected to the handrail to support the sliding of the handrail.

[0038] In some embodiments, the linkage mechanism further includes:

[0039] A linkage component is disposed between the linkage assembly and the handrail;

[0040] The linkage component is connected to the handrail via the linkage member, the linkage member is used to drive the handrail to move, and the handrail can slide relative to the linkage member;

[0041] An elastic element is provided between the linkage and the handrail. The elastic element acts on the handrail to apply an elastic force to the handrail so that it returns to its original position relative to the linkage.

[0042] This utility model of a chair uses a linkage mechanism to enable the backrest support and armrests to move together. When a user sits in the chair, leaning back or reclining will cause the backrest and backrest support to rotate relative to the base. At this time, the linkage mechanism will correspondingly drive the armrests to move to follow the user's arms, always providing sufficient support for the user's arms, which helps to improve the user's comfort when using the chair. Attached Figure Description

[0043] Figure 1 This is a structural schematic diagram of the seat in one embodiment of the present invention;

[0044] Figure 2 This is a structural schematic diagram of a portion of the seat in one embodiment of the present invention;

[0045] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0046] Figure 4 This is a structural schematic diagram of another part of the seat in one embodiment of the present utility model;

[0047] Figure 5 This is a structural schematic diagram of another part of the seat in one embodiment of the present utility model;

[0048] Figure 6 This is a structural schematic diagram of the seat in another embodiment of the present invention;

[0049] Figure 7 for Figure 6 A schematic diagram of a portion of the seat in the embodiment;

[0050] Figure 8 for Figure 6 A structural schematic diagram of another part of the seat in the embodiment;

[0051] Figure 9 for Figure 6 A structural schematic diagram of another part of the seat in the embodiment;

[0052] Figure 10 This is a structural schematic diagram of a portion of the seat in another embodiment of the present utility model;

[0053] Figure 11 This is a structural schematic diagram of a portion of the seat in another embodiment of the present invention. Detailed Implementation

[0054] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0055] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0056] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0057] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0058] As seating furniture for people to sit on while working, studying or resting, chairs are developing in a more human-centered and intelligent direction, striving to provide users with a comfortable and healthy sitting experience.

[0059] This utility model provides a seat, referring to... Figure 1 The seat includes:

[0060] Base 100;

[0061] Seat cushion 200, mounted on base 100;

[0062] Armrest 300 is located on the side of seat cushion 200;

[0063] The backrest bracket 400 is rotatably connected to the base 100;

[0064] The linkage mechanism 500 is connected to the armrest 300 and is also linked to the backrest support 400 so that the armrest 300 can move when the backrest support 400 rotates.

[0065] In this embodiment, the base 100 (also referred to as the chassis) serves as the foundation of the entire seat structure, bearing the weight of the human body and various pressures that may be generated during use, and possessing sufficient strength and stability. Furthermore, the base 100 is a key component connecting the main body of the seat (such as the backrest 600, seat cushion 200, etc.), and it combines the various components together through specific connection methods (such as fixed connection, rotatable connection, etc.) to form a complete seat structure.

[0066] When a person sits in the chair, they sit on the seat cushion 200, which provides support for the buttocks and thighs. The arms can rest naturally on the armrests 300, which also provide support. The seat cushion 200 typically includes a bottom structure, a filling layer, and an outer covering layer. The bottom structure, usually made of metal or plastic, supports and secures the filling layer. The filling layer, located between the bottom structure and the outer covering layer, primarily provides support and cushioning; common filling materials include sponge, foam, and latex. The outer covering layer, typically made of fabric, leather, or artificial leather, wraps around the filling layer and bottom structure. The seat cushion 200 may be adjustable; for example, it can be movable on the base 100, allowing adjustment of its height, tilt angle, or depth to suit different sitting postures and meet various usage scenarios. Furthermore, the seat cushion 200 may employ a zoned design, providing different levels of support for different body parts to enhance comfort. In addition, the armrest 300 may have angle and position adjustment functions. For example, users can adjust the outward tilt angle of the armrest 300 by bending it outward or inward by bending it inward. They can also unlock the armrest 300 by pressing a button, allowing it to be moved up and down to adjust its height, adapting it to the user's arm position and meeting the needs of different usage scenarios. The seat typically uses two armrests 300, with the two armrests 300 respectively located on opposite sides of the seat cushion 200. The armrests 300 can be mounted on the seat cushion 200 or on the base 100; this embodiment does not limit the placement of the armrests 300.

[0067] The backrest bracket 400 can be installed on the rear side of the base 100 to cooperate with the backrest 600 to provide support for the back and / or waist. The backrest bracket 400 can take various shapes, such as arc, S-shape, L-shape, etc., depending on actual structural requirements. To ensure sufficient support strength, the backrest bracket 400 can be made of materials such as metal (e.g., steel, aluminum alloy), plastic, etc. The backrest bracket 400 can be an integral part of the backrest 600, such as being integrated into the backrest 600, or it can be... Figure 1 As shown, the backrest bracket 400 is connected to the backrest 600 and is used to support the backrest 600. Taking the front-back and left-right directions of the seat as a reference direction, the backrest 600 is located in front of the backrest bracket 400 and is connected to the backrest bracket 400. Figure 1As shown, the backrest support 400 may include a base connecting portion 410 and a backrest support portion 420. The backrest support portion 420 and the base connecting portion 410 are arranged at an angle, which can be a right angle or an obtuse angle. The backrest support portion 420 is used to support the backrest 600, and the base connecting portion 410 is rotatably connected to the base 100. The rotatable connection between the backrest support 400 and the base 100 can be achieved by the base connecting portion 410 of the backrest support 400 passing through the base 100 via a hinge shaft Jz. Further, the base connecting portion 410 of the backrest support 400 may be detachably connected to a rotating member 430, which is sleeved on the hinge shaft Jz to form a rotatable connection with the base 100. Of course, this is merely an example and not a limitation. When a user sits in the chair, their back and / or lumbar region can lean back against the backrest 600. The backrest support 400 provides support for the back and / or lumbar region. Furthermore, when switching from a seated position to a reclining / lying position, the backrest support 400 can rotate accordingly to adapt to the user's posture. In this embodiment, depending on the function of the backrest support 400, it can also be called a chair back support, a linkage support, etc., and the naming is not limited.

[0068] The linkage mechanism 500 functions to link the backrest support 400 (which can also be considered as the backrest 600) and the armrest 300. Specifically, the linkage mechanism 500 is linked to the backrest support 400. When the backrest support 400 rotates, the linkage mechanism 500 correspondingly drives the armrest 300 to move, causing the armrest 300 and the backrest support 400 to move together. The movement of the armrest 300 can be a back-and-forth movement relative to the base 100, including but not limited to this.

[0069] For example, when the backrest support 400 is subjected to a rearward external force (such as the rearward pressure exerted on the backrest support 400 by a user leaning back / reclining, or an electric driving force), the backrest support 400 rotates rearward, and the linkage mechanism 500 correspondingly drives the armrest 300 to move rearward. For instance, when the user leans back / reclins, the backrest support 400 rotates rearward and the linkage mechanism 500 simultaneously drives the armrest 300 to move rearward, so as to automatically adjust the position to adapt to the user's sitting posture and / or position. When the backrest support 400 is subjected to a forward external force, the backrest support 400 rotates forward, and the linkage mechanism 500 correspondingly drives the armrest 300 to move forward. For instance, when the user changes from leaning back / reclining to sitting upright, the backrest support 400 rotates forward and the linkage mechanism 500 simultaneously drives the armrest 300 to move forward, so as to automatically adjust the position to adapt to the user's sitting posture and / or position.

[0070] The linkage mechanism 500 is mounted on the base 100, and its structural configuration can take various forms. For example, the linkage mechanism 500 consists of the following parts:

[0071] The detection structure monitors the rotation status of the backrest bracket 400, using sensors such as angle sensors and encoders.

[0072] The drive structure provides driving power, such as a motor, based on the detection data from the detection structure.

[0073] A transmission structure transmits power from the drive structure to the handrail 300 to enable the handrail 300 to move; for example, a gear rack, chain, belt, etc.

[0074] The above are merely illustrative examples and are not restrictive. In addition, the linkage mechanism 500 may also adopt other structural compositions, which will be described in detail in subsequent embodiments.

[0075] In this embodiment, the seat uses a linkage mechanism 500 to enable the backrest support 400 and armrest 300 to move together. When the user sits in the seat, leaning back or reclining will cause the backrest 600 and backrest support 400 to rotate relative to the base 100. At this time, the linkage mechanism 500 will correspondingly drive the armrest 300 to move to follow the user's arm and always provide sufficient support for the user's arm, which helps to improve the user's comfort when using the seat.

[0076] In some embodiments, refer to Figure 1 The 500 linked organizations include:

[0077] The frame 510 is movably connected to the base 100. The frame 510 is connected to the backrest support 400 through a transmission, and can move with the backrest support 400 when the backrest support 400 rotates.

[0078] The handrail 300 is installed on the frame 510.

[0079] The linkage mechanism 500 adopts a frame 510 structure. The frame 510 can be a one-piece frame 510 or a frame 510 assembled from multiple different parts or components. This embodiment does not limit this.

[0080] The frame 510 and the base 100 are movably connected. This movable connection can include a rotatable connection, a sliding connection, or a connection via a linkage structure. Because the frame 510 and the base 100 are movably connected, the frame 510 can move relative to the base 100, and the movement can include moving, rotating, etc.

[0081] The transmission connection between the frame 510 and the backrest support 400 can be either a direct connection between them to establish a transmission relationship, or a connection between the frame 510 and the backrest support 400 via an intermediate connector. This intermediate connector can be a support member that provides support to the backrest support 400. Whether the frame 510 and the backrest support 400 are directly connected or connected via an intermediate connector, the connection method can be a movable connection, including rotational connections, sliding connections, or connections via linkage structures. Because the frame 510 and the backrest support 400 are connected by a transmission connection, when the backrest support 400 is subjected to external force and rotates, the backrest support 400 can drive the frame 510 to move, thus transmitting power to the frame 510 and causing the frame 510 to drive the armrest 300 in conjunction.

[0082] Depending on the function of the frame 510, it can also be called a linkage frame, base frame, or cushion frame, etc. For example, if the frame 510 has a linkage function, it can be called a linkage frame; or if the frame 510 is set on the base 100, it can be considered part of the structural design of the base 100, and therefore can be called a base frame. Or, if the frame 510 is a component of the cushion 200, and the cushion shell is covered on the frame 510 to form the cushion 200, it can be used to support the cushion 200, and therefore can be considered part of the structural design of the cushion 200, and thus can be called a cushion frame.

[0083] Among them, reference Figure 1 Along the front-back direction of the seat or along the front-back direction of the base 100, the frame 510 has a front end and a rear end that are spaced apart. The front end of the frame 510 can be movably connected to the base 100, and the rear end of the frame 510 can be drivenly connected to the backrest support 400, so that the frame 510 can move relative to the base 100 along the front-back direction of the base 100 under the drive of the backrest support 400.

[0084] Since the backrest support 400 and the base 100 are rotatably connected, and by movably connecting the front end of the frame 510 to the base 100 and drivingly connecting the rear end of the frame 510 to the backrest support 400, a linkage mechanism is formed among the backrest support 400, the base 100, and the frame 510, resulting in a relatively definite kinematic relationship. Therefore, due to the existence of this linkage mechanism, the frame 510 has a defined movement trajectory and corresponding movement actions. That is, when the backrest support 400 rotates, it will correspondingly drive the frame 510 to move along the defined movement trajectory and perform the corresponding movement actions.

[0085] The armrest 300 is mounted on the frame 510 and is linked to the backrest support 400 through the frame 510. The three have a coordinated action mechanism. When the backrest support 400 is rotated by an external force, the backrest support 400 can drive the frame 510 to move, realizing the transmission of the frame 510, which in turn causes the frame 510 to drive the armrest 300 in a coordinated manner.

[0086] When the user reclines / lies back and the backrest support 400 rotates backward (e.g., counterclockwise), the backrest support 400 drives the frame 510 to move backward, and the armrests 300 on the frame 510 move backward accordingly. This adjusts the position of the armrests 300 as the user reclines / lies back, making the armrests 300 adapt to the user's arm position. Conversely, when the user switches from reclining / lying back to sitting upright and the backrest support 400 rotates forward (e.g., clockwise), the backrest support 400 drives the frame 510 to move forward, and the armrests 300 on the frame 510 move forward accordingly. This adjusts the position of the armrests 300 as the user switches from reclining / lying back to sitting upright, making the armrests 300 adapt to the user's arm position.

[0087] In some embodiments, refer to Figures 1 to 3 The handrail 300 is slidably mounted on the frame 510;

[0088] The 500 linkage mechanism also includes:

[0089] The linkage component connects the armrest 300 to the frame 510 when the backrest support 400 rotates.

[0090] The handrail 300 can be installed on the frame 510 through sliding structures such as guide rail sliders, guide rods and guide sleeves, so as to achieve a sliding setting on the frame 510.

[0091] The function of the linkage component is to transmit power to the armrest 300 when the backrest support 400 rotates, causing the armrest 300 to slide on the frame 510. That is, in addition to being mounted on the frame 510, the armrest 300 is also connected to the backrest support 400 via the linkage component. Specifically, when the backrest support 400 rotates, correspondingly causing the frame 510 to move, the armrest 300 on the frame 510 moves with it. Simultaneously, the linkage component transmits power to the armrest 300, causing it to slide on the frame 510. In other words, when the backrest support 400 rotates, the armrest 300 both moves with the frame 510 and slides on the frame 510 under the transmission of the linkage component, thus giving the armrest 300 a larger range of motion, improving its ability to follow the user's arms, and providing better support for the user's arms.

[0092] The linkage components mentioned in the above embodiments can take various structural forms, such as:

[0093] In some embodiments, refer to Figure 3 and Figure 4 The linkage components include:

[0094] Linkage assembly 520 is disposed on frame 510 or seat cushion 200. One end of linkage assembly 520 is hinged to base 100, and the other end of linkage assembly 520 is hinged to armrest 300.

[0095] When the linkage assembly 520 is disposed on the seat cushion 200, the frame 510 can be the seat cushion frame. The seat cushion 200 is formed by covering the frame 510 with a seat cushion shell. The seat cushion 200 can move with the frame 510 and move synchronously. The linkage assembly 520 can be the seat cushion shell disposed on the seat cushion 200.

[0096] The linkage component uses a linkage assembly 520 to convert the rotational motion of the backrest support 400 into the linear motion of the armrest 300, thereby transmitting power. Specifically, when the backrest support 400 rotates backward, it correspondingly drives the frame 510 to move backward. At the same time, due to the change in the position of the frame 510 relative to the base 100, the linkage assembly 520 mounted on the frame 510 or the seat cushion 200 moves accordingly (i.e., the position of the linkage in the linkage assembly 520 changes), so that the armrest 300 moves backward on the frame 510 through the linkage assembly 520. When the backrest support 400 rotates forward, it correspondingly drives the frame 510 to rotate forward. At the same time, due to the change in the position of the frame 510 relative to the base 100, the linkage assembly 520 mounted on the frame 510 or the seat cushion 200 moves accordingly, so that the armrest 300 moves forward on the frame 510 through the linkage assembly 520.

[0097] In some embodiments, refer to Figures 3 to 5 The linkage assembly 520 includes a first linkage 521, a second linkage 522 and a third linkage 523. The second linkage 522 is rotatably mounted on the frame 510 or the seat cushion 200 and is located between the first linkage 521 and the third linkage 523.

[0098] One end of the first link 521 is hinged to the base 100, the other end of the first link 521 is hinged to one end of the second link 522, the other end of the second link 522 is hinged to one end of the third link 523, and the other end of the third link 523 is hinged to the handrail 300.

[0099] The linkage assembly 520 adopts a three-link structure consisting of a first link 521, a second link 522, and a third link 523, and is located between the base 100 and the handrail 300. The base 100, the first link 521, the second link 522, the third link 523, and the handrail 300 are connected in sequence.

[0100] The transmission principle of this linkage assembly 520 is as follows: When the backrest support 400 rotates, the frame 510 moves relative to the base 100, and the relative position between the two changes. Since the first link 521 is hinged to the base 100 and the second link 522 mounted on the frame 510 or the seat cushion 200, when the relative position between the frame 510 and the base 100 changes, the first link 521 will drive the second link 522 to rotate. During the rotation, the second link 522 will correspondingly drive the third link 523 to move, so that the armrest 300 can slide on the frame 510 through the third link 523.

[0101] In some embodiments, refer to Figure 5 The first link 521 and the second link 522 are set at an angle. The first link 521 includes a base connecting arm 521A and a link connecting arm 521B. The end of the base connecting arm 521A away from the link connecting arm 521B is hinged to the base 100, and the end of the link connecting arm 521B away from the base connecting arm 521A is hinged to the second link 522.

[0102] The width of the connecting arm 521B is greater than the width of the base connecting arm 521A; and / or, the first connecting arm 521 has reinforcing ribs Jq protruding from its two opposite surfaces in the thickness direction, the reinforcing ribs Jq being disposed on the base connecting arm 521A and extending at least partially to the connecting arm 521B.

[0103] Specifically, the hinge axis between the first link 521 and the base 100 may be a horizontal axis, while the hinge axes between the first link 521 and the second link 522, the second link 522 and the third link 523, and the third link 523 and the handrail 300 may all be vertical axes.

[0104] When the backrest support 400 rotates backward (e.g., when the user leans back / reclins), it will cause the frame 510 to move backward. At this time, the relative positions of the frame 510 and the base 100 change. Taking the frame 510 as a stationary reference frame (in reality, the frame 510 moves while the base 100 does not move; this is only for the purpose of clearly explaining the principle), the base 100 moves forward. Since the hinge axis between the first link 521 and the base 100 is a horizontal axis (equivalent to the two being hinged in the vertical direction), the relative motion in the vertical direction can be eliminated, and all of it is converted into the horizontal rotation of the second link 522. Driven by the first link 521, the second link 522 rotates around the hinge point between the second link 522 and the frame 510 as the center point, and then it is converted into the movement of the third link 523. The third link 523 drives the armrest 300 to move backward, realizing the follow-up movement of the armrest 300.

[0105] Among them, the hinge axis between the first link 521 and the base 100 is a horizontal axis, and the hinge axis between the first link 521 and the second link 522 is a vertical axis. During the movement of the handrail 300, the first link 521 will bear different forces in two directions.

[0106] The base connecting arm 521A and the connecting arm 521B of the first connecting rod 521 are connected to the base 100 and the second connecting rod 522 respectively. By setting the width of the connecting arm 521B to be greater than the width of the base connecting arm 521A, that is, the width of the connecting arm 521B is relatively wide and the width of the base connecting arm 521A is relatively thin, so that the first connecting rod 521 has a certain deformation capability and a certain structural strength, can withstand the torsional force in the corresponding direction and is conducive to deformation.

[0107] And / or, by providing reinforcing ribs Jq protruding from opposite surfaces of the first link 521 in its thickness direction, and the reinforcing ribs Jq being disposed on the base connecting arm 521A and extending at least partially to the link connecting arm 521B, the first link 521 has a certain deformation capability and at the same time has a certain structural strength, can withstand folding force in the corresponding direction and is conducive to deformation.

[0108] In some embodiments, the first link 521 may be elastically deformable; and / or,

[0109] The third link 523 is elastically deformable.

[0110] The first link 521 is elastically deformable, meaning that it deforms when subjected to an external force and returns to its original shape after the force is removed. The first link 521 can be made of an elastically deformable material such as rubber. The first link 521 is relatively flexible and can absorb torsional deformation caused by adjusting the angle of the armrest 300 (outward or inward tilting) to accommodate the outward or inward tilting angle / position of the armrest 300, including but not limited to this.

[0111] The third link 523 is elastically deformable, meaning that it deforms when subjected to external force and returns to its original shape after the force is removed. The third link 523 can be made of an elastically deformable material such as rubber. The third link 523 has relative flexibility, which can be used to absorb torsional deformation at its hinged ends during movement, thereby enabling transmission of power to the handrail 300.

[0112] In some embodiments, it also includes:

[0113] Mounting bracket, connected to base 100;

[0114] The armrest 300 is slidably mounted on the base 100, the seat cushion 200, or the mounting bracket.

[0115] The 500 linkage mechanism also includes:

[0116] The linkage component connects the armrest 300 to the backrest support 400, which is used to drive the armrest 300 to slide on the base 100, seat cushion 200, or mounting bracket when the backrest support 400 rotates.

[0117] When the armrest 300 is slidably mounted on the base 100, the seat cushion 200, or the mounting bracket, the armrest 300 can be installed on the object (base 100, seat cushion 200, or mounting bracket) through a sliding structure such as a guide rail slider, guide rod, or guide sleeve, thus achieving slidable mounting on the object.

[0118] The function of the linkage component is to drive the armrest 300 to slide on the mounting surface when the backrest support 400 rotates. The armrest 300 is mounted on the base 100, seat cushion 200, or mounting bracket, and is linked to the backrest support 400 via the linkage component, with a mutually cooperating action mechanism among the three. When the backrest support 400 is subjected to an external force and rotates, the linkage component correspondingly drives the armrest 300 to slide on the mounting surface.

[0119] Referring to the skeleton 510 in the foregoing embodiment, the mounting bracket involved in this embodiment can also be called a base bracket or a seat bracket. The structure can be designed with reference to the skeleton 510. The only difference between the two is that the skeleton 510 in the foregoing embodiment is movable on the base 100, while the mounting bracket in this embodiment can be fixed on the base 100.

[0120] The linkage components mentioned in the foregoing embodiments can take various structural forms, such as:

[0121] In some embodiments, refer to Figures 6 to 8 The linkage components include:

[0122] The reel assembly 530 includes a first reel 531, a second reel 532, and a pull line 533. The first reel 531 is rotatably mounted on the base 100, and the pull line 533 is wound around the first reel 531 and the second reel 532.

[0123] The first pulley 531 is connected to the backrest bracket 400 via a transmission, and the armrest 300 is fixedly connected to the pull cable 533 and can move under the drive of the pull cable 533.

[0124] The first reel 531 can be a winding reel, the second reel 532 can be a supporting reel, and the pull cable 533 passes around the second reel 532, with its two ends wound around the first reel 531 in opposite directions. Specifically, the first reel 531 can be provided with two separately arranged winding grooves, and the two ends of the pull cable 533 are wound into the two winding grooves of the first reel 531 respectively. Based on this structural configuration, the transmission principle of the reel assembly 530 can be as follows: when the backrest support 400 rotates, the first reel 531 is correspondingly rotated, the first reel 531 winds or releases the pull cable 533, the second reel 532 correspondingly supports the movement of the pull cable 533, and the pull cable 533 correspondingly drives the armrest 300 to slide.

[0125] Specifically, when the backrest support 400 rotates backward, the first pulley 531 is driven to rotate to wind one end of the pull cable 533 and simultaneously release the other end of the pull cable 533, and the movement of the pull cable 533 corresponds to pulling the armrest 300 backward; when the backrest support 400 rotates forward, the first pulley 531 is driven to rotate to wind the other end of the pull cable 533 and simultaneously release one end of the pull cable 533, and the movement of the pull cable 533 corresponds to pulling the armrest 300 forward.

[0126] In addition to the above-described embodiments, both the first spool 531 and the second spool 532 can be winding spools, with one end of the pull wire 533 wound around the first spool 531 and the other end wound around the second spool 532. The second spool 532 is connected to a reset element (such as a reset torsion spring). Based on this structural configuration, the transmission principle of the spool assembly 530 can be as follows: when the backrest bracket 400 rotates, the first spool 531 is correspondingly driven to rotate, and the first spool 531 winds or releases the pull wire 533. The second spool 532 rotates correspondingly to release the pull wire 533 when the first spool 531 winds the pull wire 533. The reset element simultaneously accumulates elastic potential energy, and when the first spool 531 releases the pull wire 533, the reset element acting on the second spool 532 releases elastic potential energy. Under the action of the reset element, the second spool 532 rotates correspondingly to wind the pull wire 533.

[0127] In particular, whether the armrest 300 is set on the frame 510, or on the base 100, seat cushion 200 or mounting bracket, the linkage component can be the pulley assembly 530.

[0128] In some embodiments, refer to Figure 8 and Figure 9 The backrest bracket 400 is connected to a hinge shaft Jz, and the backrest bracket 400 is connected to the base 100 via the hinge shaft Jz so that it can be rotatably connected to the base 100.

[0129] The linkage components also include:

[0130] The transmission assembly 540 is disposed between the hinge shaft Jz and the first thread pulley 531. The transmission assembly 540 is connected to both the hinge shaft Jz and the first thread pulley 531 and is used to drive the first thread pulley 531 to rotate when the backrest support 400 rotates.

[0131] When the backrest bracket 400 rotates, the hinge shaft Jz connected to the backrest bracket 400 rotates to drive the transmission assembly 540 to run, and the first pulley 531 rotates through the transmission assembly 540.

[0132] The transmission assembly 540 can be a gear transmission assembly, for example, a gear transmission assembly including a gear 541 and a gear transmission member 542. The gear 541 is located on one side of the first spool 531 and is coaxially connected to the first spool 531. The gear transmission member 542 has a sleeve portion and a transmission portion extending radially from the sleeve portion. The end of the transmission portion away from the sleeve portion is provided with meshing teeth. The sleeve portion is sleeved and fixed on the hinge shaft connected to the backrest bracket 400, and the transmission portion meshes with the gear 541 through its meshing teeth. Alternatively, the transmission assembly can also be other transmission assemblies such as a belt drive assembly.

[0133] In this technical solution, whether the armrest 300 is set on the frame 510, the base 100, the seat cushion 200, or the mounting bracket, the armrest 300 can be installed on its corresponding object through the sliding support structure.

[0134] For example, in some embodiments, reference Figure 1 and Figure 3 The seats also include:

[0135] The sliding support component 700 is connected to the handrail 300 and is used to support the sliding of the handrail 300.

[0136] The armrest 300 is mounted on a sliding support assembly 700 on a mounting object (such as a frame 510, base 100, seat cushion 200, or mounting bracket). The armrest 300 is slidably mounted on the mounting object by connecting to the sliding support assembly 700. That is, under the structural action of the sliding support assembly 700, the armrest 300 can slide on the mounting object.

[0137] The sliding support assembly 700 can be a sliding rod and sleeve assembly, such as... Figure 3 As shown, the sliding rod and sleeve assembly includes a sliding rod 710 and a sleeve 720 that is fitted onto the sliding rod 710 and can slide along the sliding rod 710. The sliding rod 710 is mounted on the object being installed and located on the side of the object. The length direction of the sliding rod 710 is the same as the front-rear direction of the object being installed. The handrail 300 is connected to the sleeve 720. Alternatively, the sliding support assembly can also be other sliding components such as a groove-slider assembly. For example, the object being installed has a groove that extends along the front-rear direction of the object, and a slider that slides within the groove is installed therein. The handrail 300 is connected to the slider. The above are merely examples and are not limiting; any structure that can support the sliding of the handrail 300 can be used as a sliding support assembly.

[0138] In some embodiments, refer to Figure 10 and Figure 11 The 500 linkage mechanism also includes:

[0139] Linkage component 550 is located between the linkage assembly and the handrail 300;

[0140] The linkage component is connected to the handrail 300 via the linkage member 550. The linkage member 550 is used to drive the handrail 300 to move, and the handrail 300 can slide relative to the linkage member 550.

[0141] An elastic element 560 is provided between the linkage 550 and the handrail 300. The elastic element 560 acts on the handrail 300 to apply an elastic force to the handrail 300 to reset it relative to the linkage 550.

[0142] Specifically, the linkage component establishes a linkage relationship with the armrest 300 through the provided linkage member 550, and the three have a mutually cooperating action mechanism. When the backrest support 400 is rotated by an external force, the linkage component correspondingly drives the linkage member 550, so that the linkage member 550 correspondingly drives the armrest 300 to move. The structural form of the linkage component can be set with reference to the aforementioned embodiments, such as the linkage component including a linkage assembly 520 or a pulley assembly 530, etc. When the linkage component includes a linkage assembly 520, the third link 523 of the linkage assembly 520 can be connected to the linkage member 550; when the linkage component includes a pulley assembly 530, the pull wire 533 of the pulley assembly 530 can be connected to the linkage member 550.

[0143] The linkage 550 can take various structural forms, as an example, such as Figure 10 and Figure 11 As shown, the linkage component 550 includes a linkage sleeve, which is fitted onto the slide rod 710 and can slide along the slide rod 710. The portion of the armrest 300 fitted onto the slide rod 710 is housed within the inner space of the linkage sleeve. One or more slide rods 710 can be provided; there is no limitation here. When the backrest support 400 rotates, the corresponding transmission linkage component pulls the linkage sleeve to slide on the slide rod 710. The linkage sleeve correspondingly pushes the armrest 300 to slide on the slide rod 710, thus moving the armrest 300. Furthermore, the armrest 300 can slide relative to the linkage sleeve on the slide rod 710 within the inner space of the linkage sleeve. Therefore, the position of the armrest 300 relative to the linkage sleeve is adjustable to flexibly handle unexpected situations such as hand pinching.

[0144] The function of the elastic element 560 is to allow the handrail 300 to return to its original position relative to the linkage 550 after the external force is removed, following the movement of the handrail 300 relative to the linkage 550 by the external force. Based on the linkage sleeve structure of the linkage 550, the elastic element 560 can be a spring. The elastic element 560 is housed within the inner space of the linkage sleeve and correspondingly sleeved on the slide rod 710. Both ends of the elastic element 560 abut against the inner wall of the linkage sleeve and the handrail 300, respectively. Furthermore, two elastic elements 560 can be provided, with two elastic elements 560 respectively located on both sides of the handrail 300 along the length of the slide rod 710.

[0145] Based on specific usage scenarios, during the movement (such as backward movement) of the armrest 300 and the backrest support 400, if an accident such as the armrest 300 pinching a hand occurs, the armrest 300 provides elastic support to the hand due to the structural design of the linkage 550 and the elastic element 560, preventing hand injury. In addition, the user can operate the armrest 300 relative to the linkage 550 to quickly remove their hand. Furthermore, after the user releases the armrest 300, it can return to its original support position relative to the linkage 550 under the action of the elastic element 560, making it convenient to use.

[0146] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A type of seat, characterized in that, include: Base; A seat cushion is provided on the base; Armrests are located on the sides of the seat cushion; The backrest support is rotatably connected to the base. A linkage mechanism is connected to the armrest and is also linked to the backrest support, so that the armrest can be moved by the linkage mechanism when the backrest support rotates. The linkage mechanism includes: The frame is movably connected to the base, the frame is drivenly connected to the backrest bracket, and can move with the backrest bracket when the backrest bracket rotates. The handrail is mounted on the frame. The handrail is slidably mounted on the frame; The linkage mechanism also includes: A linkage component is provided, wherein the armrest is connected to the linkage component, and the linkage component is used to drive the armrest to slide on the frame when the backrest support rotates.

2. The seat according to claim 1, characterized in that, The linkage component includes: A linkage assembly is disposed on the frame or the seat cushion, one end of the linkage assembly is hinged to the base, and the other end of the linkage assembly is hinged to the armrest.

3. The seat according to claim 2, characterized in that, The linkage assembly includes a first linkage, a second linkage, and a third linkage, wherein the second linkage is rotatably mounted on the frame or the seat cushion and is located between the first linkage and the third linkage; One end of the first connecting rod is hinged to the base, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is hinged to one end of the third connecting rod, and the other end of the third connecting rod is hinged to the handrail.

4. The seat according to claim 3, characterized in that, The first connecting rod and the second connecting rod are arranged at an angle. The first connecting rod includes a base connecting arm and a connecting rod connecting arm. The end of the base connecting arm away from the connecting rod connecting arm is hinged to the base. The end of the connecting rod connecting arm away from the base connecting arm is hinged to the second connecting rod. The width of the connecting arm is greater than the width of the base connecting arm; and / or, the first connecting rod has reinforcing ribs protruding from its two opposite surfaces in the thickness direction, the reinforcing ribs being disposed on the base connecting arm and extending at least partially to the connecting arm.

5. The seat according to claim 4, characterized in that, The first link is elastically deformable; and / or, The third link is elastically deformable.

6. The seat according to claim 1, characterized in that, The linkage component includes: A reel assembly, comprising a first reel, a second reel, and a pull line, wherein the first reel is rotatably mounted on the base, and the pull line is wound around the first reel and the second reel; The first reel is connected to the backrest support via a transmission, and the armrest is fixedly connected to the pull line and can move under the drive of the pull line.

7. The seat according to claim 6, characterized in that, The backrest bracket is connected to a hinge shaft, and the backrest bracket is connected to the base via the hinge shaft so as to be rotatably connected to the base; The linkage component also includes: A transmission assembly is disposed between the hinge shaft and the first reel. The transmission assembly is connected to both the hinge shaft and the first reel, and is used to drive the first reel to rotate when the backrest support rotates.

8. The seat according to claim 1, characterized in that, Also includes: A sliding support assembly is connected to the handrail to support the sliding of the handrail.

9. The seat according to claim 1, characterized in that, The linkage mechanism also includes: A linkage component is disposed between the linkage assembly and the handrail; The linkage component is connected to the handrail via the linkage member, the linkage member is used to drive the handrail to move, and the handrail can slide relative to the linkage member; An elastic element is provided between the linkage and the handrail. The elastic element acts on the handrail to apply an elastic force to the handrail so that it returns to its original position relative to the linkage.

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