Rotatable armrest suitable for seat, and seat

Abstract

A rotatable armrest suitable for a seat, the rotatable armrest comprising a base platform (2) and an armrest assembly (5), and further comprising: a head platform (4), which is connected to the armrest assembly (5); and an adapter arm (3), two ends of which are rotatably connected to the head platform (4) and the base platform (2), respectively, wherein the head platform (4) and the base platform (2) are each provided with an engagement mechanism (9); locking mechanisms (8) are respectively provided at a head end and a tail end of the adapter arm (3), and are configured to cooperate with the engagement mechanisms (9) so as to lock rotation angles of the adapter arm (3) relative to the head platform (4) and relative to the base platform (2); and at least two traction members (10) are provided, one of the ends of each traction member (10) being connected to the corresponding locking mechanism (8) for pulling the locking mechanism (8) to move towards or away from the engagement mechanism (9). Provided are a rotatable armrest suitable for a seat, and a seat, which are high in versatility and light in weight, and can be suitable for the design of lightweight seat products. In addition, adjustment of the position of the armrest is convenient with high flexibility, and adaptive adjustment of the position and posture of the armrest can be flexibly achieved within a wide range of position areas.

Description

A rotating armrest suitable for a seat and a seat Technical Field

[0001] This invention relates to the field of household appliance machinery, specifically to the structural design of chair armrests. Background Technology

[0002] Chairs are common support structures for sitting and reclining postures, widely used in daily life and office work, such as armchairs and sofas. Generally, a chair includes functional components such as a seat, backrest, armrests, and support legs. With the progress of the times and the improvement of living standards, in addition to the traditional support function, chairs have more demands for functionality and comfort.

[0003] Among the various components of a seat, the armrests are functional parts that support the hands, arms, and elbows. In the original design, armrests were often fixed, but such armrest structures offer limited support and can only be installed on seats where the user's posture is fixed and not adjustable. When the seat has a lumbar support that can be folded down or even supports lying flat, these fixed armrests cannot provide comfortable support for the user's elbows.

[0004] Furthermore, some products use an adjustable armrest design. For example, Chinese patent document CN201520490561.4 discloses a height-adjustable armrest suitable for seats. This type of armrest can drive the X-frame to move by a cylinder or other driving component. The armrest is installed on the X-frame, thereby realizing the change of the armrest's position.

[0005] However, this technical solution has the following drawbacks: First, the movement trajectory of the X-frame is fixed, and correspondingly, the movement trajectory of the armrests is also fixed, making flexible position adjustment impossible. Second, the X-frame is often heavy, so the driving force must come from cylinders, motors, and other drive structures, which not only increases manufacturing costs but also adds to the weight of the seat, making it unsuitable for portable seating products. Third, the seat adjustment process with this structure is complex, often requiring the user to get off the chair to operate the cylinders and motors, resulting in a poor user experience. Summary of the Invention

[0006] The purpose of this invention is to provide a rotating armrest suitable for a seat and a seat, which is highly versatile, lightweight, and suitable for designing lightweight seat products; the position adjustment of the armrest is convenient and highly flexible, and can flexibly achieve adaptive adjustment of the armrest position and posture within a large range of positions.

[0007] This invention is achieved through the following technical solution: a rotating armrest suitable for a seat, comprising a base and an armrest assembly, and further comprising:

[0008] The first unit connected to the armrest assembly;

[0009] An adapter arm, the two ends of which are rotatably connected to the first platform and the base platform, respectively;

[0010] Each of the first unit and the base platform is provided with a set of cards and mechanisms;

[0011] The adapter arm is provided with a set of locking mechanisms at both ends. The locking mechanisms are used to cooperate with the card and mechanism to lock the rotation angle of the adapter arm relative to the first platform and relative to the bottom platform.

[0012] The traction member, of which there are at least two, is connected at one end to the locking mechanism for pulling the locking mechanism closer to and away from the card and mechanism.

[0013] As a preferred embodiment of the present invention, the locking mechanism includes a locking block having locking teeth; the locking mechanism includes a locking plate having locking teeth that engage with the locking teeth; and the traction member is connected to the locking block.

[0014] As a preferred embodiment of the present invention, the locking mechanism further includes a spring, one end of which is connected to the locking block and the other end of which is connected to the adapter arm.

[0015] As a preferred embodiment of the present invention, the adapter arm includes a receiving slot for accommodating the first unit.

[0016] As a preferred embodiment of the present invention, the first unit includes a protrusion, and the adapter arm includes a limiting groove that mates with the protrusion. The maximum rotation angle of the first unit relative to the adapter arm is limited by the movement of the protrusion in the limiting groove.

[0017] As a preferred embodiment of the invention, it further includes a wrench assembly mounted on the handrail assembly, the wrench assembly being connected to the traction member.

[0018] As a preferred embodiment of the present invention, the traction component is a traction rope.

[0019] As a preferred embodiment of the present invention, the wrench assembly includes a wrench plate, a wrench coupling connected to the wrench plate, and a connecting hook connected to the wrench plate, wherein the traction rope is installed in the connecting hook, and the wrench coupling is rotatably connected to the handrail assembly.

[0020] As a preferred embodiment of the present invention, the adapter arm is provided with a rope groove for the passage of the two traction ropes.

[0021] As a preferred embodiment of the present invention, it further includes a connecting seat, wherein the base is rotatably connected to the connecting seat and rotates horizontally relative to the connecting seat.

[0022] As a preferred embodiment of the present invention, the connecting seat includes a central main seat, the central main seat includes a connecting surface and a recess, and the base includes an extension platform for extending into the recess.

[0023] As a preferred embodiment of the present invention, the extending platform is frustum-shaped, and its cross-section gradually decreases in the vertically downward direction.

[0024] As a preferred embodiment of the present invention, the main seat includes a ball pin, and the base includes a mating ring. The position of the base relative to the connecting seat is fixed by the ball pin being snapped into the mating ring.

[0025] A seat includes a rotating armrest suitable for a seat, and also includes a seat, a lumbar support, and a seat frame, the base being connected to the seat frame.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. By operating the two traction components, the locking / unlocking states of the "first platform and adapter arm" and "bottom platform and adapter arm" can be switched, achieving "two-point flipping". The position and posture of the handrail assembly can be adjusted more flexibly.

[0028] 2. The flipping mechanism does not rely on a heavy frame or cylinders; users can operate it by hand, reducing the overall weight of the armrest and seat.

[0029] 3. With the wrench component, users can switch between two positions with one hand, making it easier to adjust the position and posture of the armrest component.

[0030] 4. With the operating area at the rear, the connecting hook in the middle, and the wrench shaft at the front, the user's hands are less strained and the operation is light and easy; the displacement distance of the locking block is short, and the stroke design of the components can be short, which is more conducive to the optimization of the small size of the components.

[0031] 5. The entire base can rotate horizontally in a circular direction relative to the connecting seat, and the position locking is flexible and convenient.

[0032] 6. The downward-retracting design of the extension platform saves volume in the lower part of the entire device, making it aesthetically pleasing and compact; the central main seat provides a vertical upward supporting force to the base platform, improving the stability of the base platform.

[0033] 7. The protrusion abuts against the wall of the limiting groove, thereby limiting the maximum rotation angle of the first unit relative to the connecting arm and the maximum rotation angle of the bottom platform relative to the connecting arm, thus enhancing the controllability of the position adjustment stroke. Attached Figure Description

[0034] Figure 1 is a schematic diagram of Example 1;

[0035] Figure 2 is a schematic diagram of the housing after the adapter arm in Figure 1 is hidden;

[0036] Figure 3 is a schematic diagram of the explosion of the base platform;

[0037] Figure 4 is a schematic diagram of the connection between the first unit and the adapter arm;

[0038] Figure 5 is a side sectional view after the positions in Figure 4 are connected;

[0039] Figure 6 is a schematic diagram of the wrench assembly;

[0040] Figure 7 is a schematic diagram of the flipping process in Example 1.

[0041] In the picture:

[0042] 1. Connecting seat; 11. Seat housing; 12. Middle main seat; 121. Connecting surface; 122. Cavity; 123. Ball pin; 2. Base platform; 21. Mating ring; 22. Extension platform; 3. Adapter arm; 31. Main body; 311. Receiving platform groove; 4. First stage; 41. Protrusion; 5. Handrail assembly; 6. Wrench assembly; 61. Wrench plate; 62. Wrench connecting shaft; 63. Rope hook; 7. Rotating shaft; 8. Locking mechanism; 81. Locking block; 811. Locking tooth; 82. Spring; 9. Locking mechanism; 91. Locking piece; 911. Locking tooth; 10. Traction component. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings.

[0044] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0045] Example 1, as shown in Figure 1, includes several main components: a connecting seat 1, a base 2, an adapter arm 3, a head unit 4, an armrest assembly 5, and a wrench assembly 6. As shown in Figure 3, the connecting seat 1 is the component that connects to the seat. Specifically, it includes a base shell 11 and a central main seat 12. The central main seat 12 includes a vertical plane and a connecting surface 121. The connecting surface 121 is used to connect with the seat frame. The upper surface of the central main seat 12 includes a concave cavity 122 into which the extension platform 22 extends. In this example, the extension platform 22 is a downwardly recessed frustum shape. This downwardly recessed design saves volume in the lower part of the device, making it aesthetically pleasing and compact. Furthermore, the circular design facilitates smooth horizontal rotation of the base 2, and the recessed design allows the central main seat 12 to provide a vertically upward supporting force to the base 2, improving the stability of the base 2.

[0046] The entire base 2 is capable of horizontal circumferential rotation relative to the connecting seat 1, and its position is locked by a ball pin 123. The base 2 includes a circumferential mating ring 21 with multiple circular alignment holes. When the base 2 rotates relative to the connecting seat 1, the ball pin 123 springs into the alignment hole, thus determining their position. When further rotation is needed, the user simply needs to apply slightly more force to rotate the base 2, overcoming the spring force of the ball pin 123, allowing for another rotation—flexible and convenient.

[0047] As shown in Figure 3, to facilitate the connection between the base platform 2 and the connecting arm 3, the base platform 2 can be made in a split form. The rotating shaft 7 passes through both the base platform 2 and the connecting arm 3, and both rotate around the rotating shaft 7. The connecting arm 3 and the head platform 4 also rotate using the same rotating structure. As shown in Figure 2, the connecting arm 3 and the head platform 4 achieve relative locking of their rotational positions using the locking mechanism 8 and the latching mechanism 9. The connecting arm 3 and the base platform 2 also rely on the same structure and principle. The following explanation uses the structure of the head platform 4 and the connecting arm 3 as an example.

[0048] As shown in Figures 4 and 5, the adapter arm 3 includes a main body 31 and an outer shell of the adapter arm. After the outer shell is hidden, it appears as shown in Figure 4. The first unit 4 is generally disc-shaped, and the upper part of the main body 31 has a receiving groove 311. After installation, the first unit 4 is located within the receiving groove 311. When the two rotate relative to each other, a protruding tab 411 on the first unit 4 moves within a limiting groove in the main body 31. Through the shape design of the limiting groove, the tab 411 abuts against the groove wall, thereby limiting the maximum rotation angle of the first unit 4 relative to the connecting arm 3. The limiting of the rotation angle between the connecting arm 3 and the base 2 also uses the same structural principle, which will not be elaborated here. The traction component 10 can be in the form of a traction rod, traction chain, etc. In this embodiment, a traction rope is used. There are two traction ropes, each connected to one of the two sets of locking mechanisms 8. As shown in Figure 5, the front end of the traction rope is connected to the locking block 81, which contains multiple locking teeth 811. The first unit 4 is equipped with a locking mechanism 9, which includes a locking plate 91 with multiple locking teeth 911. When the user pulls the traction rope, the locking block 81 moves, disengaging the locking teeth 811 and the locking teeth 911, leaving the first unit 4 and the adapter arm 3 in an unlocked state, with the angle between them adjustable. When the user releases the traction rope, one end of the spring 82 connects to the main body 31 and abuts against it, while the other end connects to the locking block 81, thus applying elastic force to the locking block 81 to reset it. The locking teeth 911 and the locking teeth 811 then engage, locking the first unit 4 and the adapter arm 3 in place.

[0049] Therefore, by operating the two traction components 10, the locking / unlocking states of the "first platform 4 and the adapter arm 3" and the "base platform 2 and the adapter arm 3" can be switched, achieving "two-point flipping". As shown in Figures 1 and 7, these two flipping methods allow for more flexible adjustment of the position and posture of the armrest assembly 5. Furthermore, this flipping method does not rely on a heavy frame or cylinders, allowing users to operate it manually, thus reducing the overall weight of the armrest and the entire seat.

[0050] Furthermore, as shown in Figure 6, the design of the wrench assembly 6 further enhances the ease of operation. The wrench plate 61 is horizontally positioned, with a wrench connecting shaft 62 at its front end for rotatable connection with the handrail assembly 5. A rope hook 63 is located on the lower surface of the wrench plate 61, to which two traction ropes are connected. The rear end of the wrench plate 61 is the operating area for hand operation. This design allows the user to switch between the two positions mentioned above with a single hand, making it easier to adjust the position and posture of the handrail assembly 5. Furthermore, with the operating area at the rear, the rope hook 63 in the middle, and the wrench connecting shaft 62 at the front—meaning the distance from the operating area to the wrench connecting shaft 62 is greater than the distance from the rope hook 63 to the wrench connecting shaft 62—the user's hand effort is reduced, resulting in a lighter operating feel. The large range of hand movement, coupled with the short displacement distance of the locking block 81, allows for a shorter stroke design, facilitating smaller component dimensions.

Claims

1. A rotating armrest suitable for a seat, comprising a base (2) and an armrest assembly (5), characterized in that, It also includes: a first unit (4) connected to the handrail assembly (5); a transition arm (3), the two ends of which are rotatably connected to the first unit (4) and the base platform (2) respectively; a set of latches and mechanisms (9) are provided on the first unit (4) and the base platform (2) respectively; a set of locking mechanisms (8) are provided at the first and last ends of the transition arm (3), the locking mechanisms (8) are used to cooperate with the latches and mechanisms (9) to lock the rotation angle of the transition arm (3) relative to the first unit (4) and relative to the base platform (2); a traction member (10), there are at least two traction members (10), one end of each traction member (10) is connected to the locking mechanism (8) for pulling the locking mechanism (8) closer to and away from the latches and mechanisms (9).

2. A rotating armrest for a seat according to claim 1, characterized in that: The locking mechanism (8) includes a locking block (81) having locking teeth (811); the locking mechanism (9) includes a locking plate (91) having locking teeth (911) that engage with the locking teeth (811); and the traction member (10) is connected to the locking block (81).

3. A rotating armrest for a seat according to claim 1, characterized in that: The locking mechanism (8) also includes a spring (82), one end of which is connected to the locking block (81) and the other end of which is connected to the adapter arm (3).

4. A rotating armrest for a seat according to claim 1, characterized in that: The adapter arm (3) includes a receiving slot (311) for accommodating the first unit (4).

5. A rotating armrest for a seat according to claim 4, characterized in that: The first unit (4) includes a protrusion (41), and the adapter arm (3) includes a limiting groove that cooperates with the protrusion (41). The maximum flip angle of the first unit (4) relative to the adapter arm (3) is limited by the movement of the protrusion (41) in the limiting groove.

6. A rotating armrest for a seat according to claim 1, characterized in that: It also includes a wrench assembly (6) mounted on the handrail assembly (5), the wrench assembly (6) being connected to the traction member (10).

7. A rotating armrest for a seat according to claim 6, characterized in that: The traction component (10) is a traction rope.

8. A rotating armrest for a seat according to claim 7, characterized in that: The wrench assembly (6) includes a wrench plate (61), a wrench connecting shaft (62) connected to the wrench plate (61), and a connecting hook (63) connected to the wrench plate (61). The traction rope is installed in the connecting hook (63), and the wrench connecting shaft (62) is rotatably connected to the handrail assembly (5).

9. A rotating armrest for a seat according to claim 7, characterized in that: The wrench plate (61) includes an operating area for user hand operation, and the distance from the operating area to the wrench connecting shaft (62) is greater than the distance from the connecting hook (63) to the wrench connecting shaft (62).

10. A rotating armrest for a seat according to claim 6, characterized in that: The adapter arm (3) is provided with a rope groove for the two traction ropes to pass through.

11. A rotating armrest for a seat according to any one of claims 1-10, characterized in that: It also includes a connecting seat (1), the base (2) is rotatably connected to the connecting seat (1) and rotates horizontally relative to the connecting seat (1).

12. A rotating armrest for a seat according to claim 11, characterized in that: The connecting seat (1) includes a central main seat (12), the central main seat (12) includes a connecting surface (121) and a cavity (122), and the base (2) includes an extension platform (22) for extending into the cavity (122).

13. A rotating armrest for a seat according to claim 12, characterized in that: The extension platform (22) is frustum-shaped, and its cross-section gradually decreases in the vertical downward direction.

14. A rotating armrest for a seat according to claim 11, characterized in that: The main seat (12) includes a ball pin (123), and the base (2) includes a mating ring (21). The position of the base (2) relative to the connecting seat (1) is fixed by the ball pin (123) being inserted into the mating ring (21).

15. A type of seat, characterized in that, The device includes a rotating armrest for a seat as described in any one of claims 1-14, and also includes a seat, a lumbar support and a seat frame, wherein the base (2) is connected to the seat frame.

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