Multi-angle adjustable seat support armrest

Abstract

The utility model discloses a multi -angle adjusting seat support handrail, including connecting arm, support arm and support board, the connecting arm is perpendicular with support arm connection, the upper rotation of support arm is connected with the swivel seat, the upper rotation of swivel seat is with support board rotation connection, the support board is including fixed lower bottom board and turnover upper cover, one side of fixed lower bottom board and turnover upper cover is hinged, the angle range of turnover upper cover relative fixed lower bottom board overturn is 0 180 DEG, the opposite side of turnover upper cover and fixed lower bottom board is all equipped with the support surface. In the scheme, the opposite side of turnover upper cover and fixed lower bottom board is all equipped with the support surface, can stabilize after overturning and use as the temporary table board.

Description

Technical Field

[0001] This utility model belongs to the field of seat armrest technology, specifically relating to a multi-angle adjustable seat support armrest. Background Technology

[0002] As an important component of seat structure, chair armrests are widely used in office chairs, wheelchairs, vehicle seats, and medical care equipment. Traditional chair armrests are usually fixed structures, providing only basic arm support and having a single function.

[0003] Chinese Patent Application No. 2022202259858 discloses a chair armrest, including a horizontal support portion and a vertical support portion for supporting the hand or arm. The upper end of the vertical support portion is fixedly connected to the horizontal support portion, and the lower end of the vertical support portion is fixed to one side of the chair seat. The horizontal support portion includes a push cover plate, a push base fixedly engaged with the push cover plate, and a push plate disposed between the push cover plate and the push base. A tooth is provided on one side of the push base, and a wave-shaped spring sheet that engages with the tooth is provided on the lower end face of the push plate. The push plate is fixed to the vertical support portion of the armrest by a connector that moves through the bottom of the push base, and the bottom of the push plate is slidably connected to the bottom of the push base.

[0004] The aforementioned solution is horizontally movable and has a simple structure, meeting various adjustment needs and improving comfort. However, its adjustment function is mainly limited to height or angle adjustment, and its design purpose is still primarily to support the arm. Currently, most chair armrests on the market lack reusable structural designs, especially in scenarios such as offices, medical facilities, and travel where items need to be temporarily placed. There is a lack of chair armrests that can function as both armrests and stably flipped up to be used as a table. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a multi-angle adjustable seat support armrest, comprising a connecting arm, a support arm, and a support plate. The connecting arm is perpendicularly connected to the support arm, and a rotating seat is rotatably connected above the support arm. The rotating seat is rotatably connected above the support plate. The support plate includes a fixed lower base plate and a flip-up upper cover. The fixed lower base plate and the flip-up upper cover are hinged on one side. The flip-up upper cover can flip relative to the fixed lower base plate at an angle ranging from 0 to 180°. Both the flip-up upper cover and the fixed lower base plate have supporting surfaces on their opposite sides.

[0006] Preferably, a connecting block is provided above the rotating seat, and a pentagonal protrusion is provided above the connecting block. A first connecting hole is provided in the middle of the pentagonal protrusion. A limiting plate is fixedly embedded inside the fixed lower base plate. A limiting groove is provided in the middle of the limiting plate. Several semi-circular limiting grooves are evenly provided around the inner periphery of the limiting groove. A positioning disc is provided in the limiting groove. A first positioning ball screw is provided on the side of the positioning disc. A pentagonal groove is provided at the bottom of the positioning disc. A second connecting hole is provided in the middle of the positioning disc. The pentagonal protrusion above the connecting block extends upward into the pentagonal groove.

[0007] Preferably, the top of the support arm is provided with a connecting seat, the top of the connecting seat is provided with a first connecting part, the bottom of the rotating seat is provided with a second connecting part, a first bearing is provided between the first connecting part and the second connecting part, the top of the connecting seat is provided with symmetrically arranged first placement holes, the bottom of the rotating seat is provided with a circular array of spherical recesses, the first placement hole is provided with a second positioning ball screw, and the ball part of the second positioning ball screw is sequentially engaged into the corresponding spherical recess when the rotating seat rotates.

[0008] Preferably, the end of the rotating seat is provided with a bolt connection hole, a connecting bolt is provided in the connection hole, and a flat-head nut is provided in the middle of the connecting seat, and the connecting bolt passes through the connection hole and engages with the flat-head nut.

[0009] Preferably, the support surface is provided with friction texture.

[0010] The advantages of this utility model are:

[0011] 1. This solution features a flip-up top cover structure. When the top cover is flipped and closed, the support plate can be used as a regular chair armrest to meet the user's arm support needs. When the top cover is flipped 180° and unfolded, it forms a large flat support surface together with the fixed bottom plate, which can be used as a temporary table to meet the diverse needs of users for temporarily placing items, writing, and using electronic devices. It has strong functional versatility.

[0012] 2. This solution incorporates a rotating base, allowing the support plate to rotate and adjust relative to the support arm. A rotating connection is also provided between the support plate and the rotating base, enabling the entire handrail to rotate and adjust at multiple angles. This allows for flexible adjustments based on different user body types, postures, and scenario requirements, enhancing user comfort and adaptability.

[0013] 3. The support surface of this solution is provided with friction texture. The presence of friction texture significantly increases the surface friction of the support surface, which can effectively prevent items from slipping and improve safety and reliability during use. Attached Figure Description

[0014] Figure 1This is a structural diagram of the present utility model.

[0015] Figure 2 This is a structural diagram of the unfolded flip-top cover of this utility model.

[0016] Figure 3 This is a schematic diagram of the fixed bottom plate structure of this utility model.

[0017] Figure 4 This is a structural diagram of the limiting plate of this utility model.

[0018] Figure 5 This is a structural diagram of the rotary seat and connecting seat of this utility model.

[0019] Figure 6 This is a structural diagram of the rotating base of this utility model.

[0020] In the diagram: 1 Connecting arm, 2 Support arm, 3 Support plate, 4 Rotating seat, 5 Fixed lower base plate, 6 Flip-top cover, 7 Support surface, 8 Connecting block, 9 Plum blossom protrusion, 10 First connecting hole, 11 Limiting plate, 12 Limiting groove, 13 Semi-circular limiting groove, 14 Positioning disc, 15 First positioning ball screw, 16 Second connecting hole, 17 Connecting seat, 18 First connecting part, 19 Second connecting part, 20 First bearing, 21 First placement hole, 22 Spherical recess, 23 Second positioning ball screw, 24 Bolt connecting hole, 25 Connecting bolt, 26 Flat head nut, 27 Friction pattern, 28 Second bearing. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1, such as Figure 1-2 As shown, a multi-angle adjustable seat support armrest includes a connecting arm 1, a support arm 2, and a support plate 3. The connecting arm 1 is perpendicularly connected to the support arm 2. A rotating seat 4 is rotatably connected to the upper part of the support arm 2, and the rotating seat 4 can rotate relative to the support arm 2. The upper part of the rotating seat 4 is rotatably connected to the support plate 3, and the support plate 3 can rotate relative to the rotating seat 4.

[0025] The support plate 3 includes a fixed lower base plate 5 and a flip-up upper cover 6. The fixed lower base plate 5 and the flip-up upper cover 6 are hinged on one side, making the flip-up operation simple and smooth, allowing for easy function switching without complex operations. The flip-up upper cover 6 can rotate relative to the fixed lower base plate 5 at an angle ranging from 0-180°. Both the flip-up upper cover 6 and the fixed lower base plate 5 have supporting surfaces 7 on their opposite sides. In use, if the flip-up upper cover 6 is not flipped, the support plate 3 as a whole can serve as an armrest. When the flip-up upper cover 6 is flipped 180°, the flip-up upper cover 6 and the supporting surfaces 7 on the fixed lower base plate 5 form a large supporting plane, which can be used to temporarily place items. By setting a flip-up upper cover structure, the armrest and temporary table functions are integrated into one unit. This not only results in a compact structure that is easy to install on various chairs, but also does not add extra space, making it suitable for various scenarios such as office chairs, vehicle seats, and medical chairs.

[0026] Combination Figure 3 and Figure 4A connecting block 8 is provided above the rotating base 4, and a plum blossom protrusion 9 is provided above the connecting block 8. A first connecting hole 10 is provided in the middle of the plum blossom protrusion 9. A limiting plate 11 is fixedly embedded inside the fixed lower base plate 5. A limiting groove 12 is opened in the middle of the limiting plate 11. A positioning disc 14 is provided in the limiting groove 12. A plum blossom groove (not shown in the figure) is provided at the bottom of the positioning disc 14. A second connecting hole 16 is provided in the middle of the positioning disc 14. The plum blossom protrusion 9 above the connecting block 8 extends upward into the plum blossom groove. The cooperation between the plum blossom protrusion 9 and the plum blossom groove is used to restrict the rotation of the positioning disc 14. A bolt is connected between the first connecting hole 10 in the middle of the plum blossom protrusion 9 and the second connecting hole 16 in the middle of the positioning disc 14. The bolt extends from the second connecting hole 16 to the first connecting hole 10, connecting the positioning disc 14 and the plum blossom protrusion 9 to prevent the positioning disc 14 from separating from the plum blossom protrusion 9.

[0027] The inner periphery of the limiting groove 12 is evenly provided with several semi-circular limiting grooves 13, and the side of the positioning disc 14 is provided with a first positioning ball screw 15, such as... Figure 4 As shown, Figure 4 The positioning ball screw is detached from the positioning disc 14 and presented separately. A positioning ball screw is a screw with a ball at the front end, typically integrating a spring mechanism to provide axial extension and contraction of the ball. The positioning disc 14 has two symmetrical screw holes on its side, each containing a first positioning ball screw 15. The ball portion of the first positioning ball screw 15 engages in the semi-circular limiting groove 13 on the inner periphery of the limiting groove 12, forming a stop point. When the support plate 3 is rotated, the ball portion of the first positioning ball screw 15 passes through and engages in the next semi-circular limiting groove 13. When the support plate 3 rotates to the designated position, the ball portion of the first positioning ball screw 15 engages in the corresponding semi-circular limiting groove 13, locking the support plate 3 in that position. Due to the elasticity of the first positioning ball screw 15, a certain amount of external force is required to pull it out of the semi-circular limiting groove 13, thus ensuring the stability of the support plate 3 in the locked state.

[0028] Combination Figure 5 and Figure 6The support arm 2 has a connecting seat 17 at its top, and a first connecting part 18 at its top. The rotating seat 4 has a second connecting part 19 at its bottom. A first bearing 20 is located between the first connecting part 18 and the second connecting part 19. The connecting seat 17 has symmetrically arranged first placement holes 21 at its top. The rotating seat 4 has a circular array of spherical recesses 22 at its bottom. A second positioning ball screw 23 is installed in the first placement hole 21. The ball portion of the second positioning ball screw 23 sequentially engages with the corresponding spherical recess 22 when the rotating seat 4 rotates. When the rotating seat 4 is rotated, the ball portion of the second positioning ball screw 23 passes through and engages with the next spherical recess 22 in sequence. When the rotating seat 4 rotates to the designated position, the ball portion of the second positioning ball screw 23 engages with the corresponding spherical recess 22, locking the rotating seat 4 in that position, thereby ensuring the stability of the rotating seat 4 in the locked state. The end of the rotating seat 4 is provided with a bolt connection hole 24, in which a connecting bolt 25 is installed. A flat-head nut 26 passes through the middle of the connecting seat 17. The connecting bolt 25 passes through the connection hole and engages with the flat-head nut 26 to connect the connecting seat 17 and the rotating seat 4, preventing the rotating seat 4 from separating from the connecting seat 17. To prevent the connecting bolt 25 from being overtightened, a space can be provided in the connection hole to place a second bearing 28. The connecting bolt 25 passes through the second bearing 28 to prevent the rotating seat 4 from being unable to rotate due to the connecting bolt 25 being overtightened.

[0029] The support surface 7 is provided with friction texture 27. The presence of friction texture 27 significantly increases the surface friction of the support surface 7, which can effectively prevent items from slipping and improve safety and reliability during use.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-angle adjustable seat support armrest, characterized in that: It includes a connecting arm (1), a support arm (2) and a support plate (3). The connecting arm (1) is vertically connected to the support arm (2). A rotating seat (4) is rotatably connected above the support arm (2). The rotating seat (4) is rotatably connected to the support plate (3). The support plate (3) includes a fixed lower base plate (5) and a flip-top cover (6). The fixed lower base plate (5) and the flip-top cover (6) are hinged on one side. The flip-top cover (6) is flipped relative to the fixed lower base plate (5) at an angle range of 0-180°. The flip-top cover (6) and the fixed lower base plate (5) are provided with support surfaces (7) on opposite sides.

2. The multi-angle adjustable seat support armrest according to claim 1, characterized in that: A connecting block (8) is provided above the rotating seat (4), and a plum blossom protrusion (9) is provided above the connecting block (8). A first connecting hole (10) is provided in the middle of the plum blossom protrusion (9). A limiting plate (11) is fixedly embedded inside the fixed lower base plate (5). A limiting circular groove (12) is opened in the middle of the limiting plate (11). Several semi-circular limiting grooves (13) are evenly opened on the inner periphery of the limiting circular groove (12). A positioning disc (14) is provided in the limiting circular groove (12). A first positioning ball screw (15) is provided on the side of the positioning disc (14). A plum blossom groove is provided at the bottom of the positioning disc (14). A second connecting hole (16) is provided in the middle of the positioning disc (14). The plum blossom protrusion (9) above the connecting block (8) extends upward into the plum blossom groove.

3. The multi-angle adjustable seat support armrest according to claim 2, characterized in that: The top of the support arm (2) is provided with a connecting seat (17), the top of the connecting seat (17) is provided with a first connecting part (18), the bottom of the rotating seat (4) is provided with a second connecting part (19), a first bearing (20) is provided between the first connecting part (18) and the second connecting part (19), the top of the connecting seat (17) is provided with a first placement hole (21) arranged symmetrically, the bottom of the rotating seat (4) is provided with a circular array of spherical recesses (22), the first placement hole (21) is provided with a second positioning ball screw (23), and the ball part of the second positioning ball screw (23) is sequentially inserted into the corresponding spherical recess (22) when the rotating seat (4) rotates.

4. The multi-angle adjustable seat support armrest according to claim 3, characterized in that: The end of the rotating seat (4) is provided with a bolt connection hole (24), and a connecting bolt (25) is provided in the connection hole. A flat-head nut (26) is provided in the middle of the connecting seat (17), and the connecting bolt (25) passes through the connection hole and engages with the flat-head nut (26).

5. The multi-angle adjustable seat support armrest according to claim 4, characterized in that: The support surface (7) is provided with friction texture (27).

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