Angle-adjustable armrest and swivel chair

Abstract

The utility model belongs to the technical field of swivel chair manufacturing, and particularly relates to an angle-adjustable armrest and a swivel chair, the angle-adjustable armrest comprises a palm supporting plate and an elbow supporting plate, one end of the elbow supporting plate is provided with a connecting boss, the connecting boss is hinged with one side of the palm supporting plate, the palm supporting plate is covered with a palm supporting cover, and the elbow supporting plate is hinged with the palm supporting cover. An upward stopping groove abutting against the palm rest cover is formed in the side, close to the hinged side, of the connecting boss, and a downward stopping protrusion abutting against the palm rest plate is arranged on the end face of the connecting boss. A connecting boss is arranged at the front end of the elbow supporting plate and stretches into the position between the palm supporting plate and the palm supporting cover to be hinged, an upward stopping groove and a downward stopping protrusion are arranged on the upper side and the end of the connecting boss respectively, and the limiting of the limit swing position is achieved by abutting against the palm supporting plate or the palm supporting cover through a stopping structure. The palm supporting plate is located at the angle flush with the elbow supporting plate, and the palm supporting plate can keep good pressure bearing capacity in the most common state of the armrest, so that the palm supporting plate can be more stable and durable.

Description

Technical Field

[0001] The utility model belongs to the technical field of swivel chair manufacturing, and particularly relates to an armrest with adjustable angle and a swivel chair. Background Art

[0002] A seat is a sitting tool with a backrest and some also have armrests. Most seats are supported by a seat frame. With the development of modern technology, most seat armrests basically have adjustment functions, such as horizontal movement, vertical movement, etc.

[0003] A seat armrest disclosed in Patent CN219249649U includes an armrest frame and an armrest main body hinged to the armrest frame. The armrest main body includes an armrest base and an armrest cover installed on the armrest base. The armrest base includes a front end base and a rear end base. A sliding guide mechanism is arranged on the rear end base along the axial direction. A hinge seat assembly and a corresponding rotating shaft are arranged on the sliding guide mechanism. The rotating shaft is connected with a support arm extending towards the front end base direction. The front end base is fixedly connected with the support arm, so that the front end base can be warped and adjusted relative to the rear end base. The utility model is convenient to operate and adjust and has good comfort.

[0004] In the above scheme, the seat armrest realizes the function of multi-direction and multi-angle adjustment of the armrest under the cooperation of each structural component. However, when the front end base is warped and adjusted, there is a lack of a reliable limiting mechanism at the upper and lower limit positions. The position is fixed only by the mutual abutment of the movable block and the snap ring. When the front end base swings at a large angle, the entire hinge seat assembly will bear a very large pressure. Especially at the most commonly used horizontal position at the front end, it is also supported by the hinge seat assembly. Over time, the hinge seat assembly is prone to fatigue, resulting in a decrease in the fixing effect or even damage. Summary of the Invention

[0005] The purpose of the utility model is to provide an armrest with adjustable angle and a swivel chair that can solve the above technical problems for the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The armrest with adjustable angle includes a palm support plate and an elbow support plate. One end of the elbow support plate is provided with a connecting boss. The connecting boss is hinged to one side of the palm support plate. A palm support cover is covered on the palm support plate. An upward stop groove abutting against the palm support cover is arranged on the connecting boss near the hinged side. A downward stop protrusion abutting against the palm support plate is arranged on the end face of the connecting boss.

[0008] In the described angle-adjustable armrest, a hinge seat is provided on the palm rest plate, the palm rest cover covers the hinge seat, and the connecting boss extends between the palm rest plate and the palm rest cover and is rotatably connected to the hinge seat through a rotating shaft.

[0009] In the described angle-adjustable armrest, an arc-shaped cover plate is provided on the palm rest cover along the shape of the hinge, and one side of the arc-shaped cover plate close to the elbow rest plate abuts against the upward stop groove.

[0010] In the described angle-adjustable armrest, a downward stop groove is provided at the end of the palm rest plate, and the downward stop groove cooperates with and abuts against the downward stop protrusion.

[0011] In the described angle-adjustable armrest, a fillet is provided on the edge where the downward stop groove abuts against the downward stop protrusion.

[0012] In the described angle-adjustable armrest, a damping swing arm is coaxially arranged at the hinge of the palm rest plate and the elbow rest plate. One end of the damping swing arm is connected to the palm rest plate, and the other end of the damping swing arm is connected to the elbow rest plate.

[0013] In the described angle-adjustable armrest, the damping swing arm includes a palm rest swing arm and an elbow rest swing arm. The rotating connection parts of the palm rest swing arm and the elbow rest swing arm slide against each other by friction. One end of the palm rest swing arm far from the rotating connection point is fixedly connected to the palm rest plate, and one end of the elbow rest swing arm far from the rotating connection point is fixedly connected to the connecting boss.

[0014] In the described angle-adjustable armrest, an adjusting slider is embedded in the elbow rest plate, and the opposite side surfaces of the adjusting slider are slidably clamped with the inner wall of the elbow rest plate.

[0015] In the described angle-adjustable armrest, an adjusting turntable is embedded in the adjusting slider. The side arc surface of the adjusting turntable is rotatably clamped with the inner wall of the adjusting slider, and the axis of the adjusting turntable is connected to the support connecting rod.

[0016] The present utility model also provides a swivel chair, and the swivel chair includes the described angle-adjustable armrest.

[0017] The advantages of the present utility model are:

[0018] A connecting boss is provided at the front end of the elbow rest plate and extends between the palm rest plate and the palm rest cover for hinging. An upward stop groove and a downward stop protrusion are respectively provided on the upper side and the end of the connecting boss. The stop structure is used to abut against the palm rest plate or the palm rest cover to limit the extreme swing position. Especially when the downward stop protrusion abuts against the palm rest plate, the palm rest plate is at an angle flush with the elbow rest plate. In this most commonly used state of the armrest, the palm rest plate can maintain good bearing capacity, making the palm rest plate more stable and durable. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the bottom structure of the armrest of the present utility model.

[0021] Figure 3 It is a schematic diagram of the upper part structure of the armrest of the present utility model.

[0022] Figure 4 It is a schematic diagram of the inner structure of the palm rest cover of the present utility model.

[0023] In the illustration, palm rest plate 1, connecting boss 11, palm rest cover 12, downward stop groove 13, elbow rest plate 2, upward stop groove 21, downward stop protrusion 22, adjusting slider 23, adjusting turntable 24, damping swing arm 3, support connecting rod 4. Detailed Description of the Preferred Embodiments

[0024] The following are specific embodiments of the utility model and in combination with the drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments. Embodiment 1

[0025] As Figures 2 - 4 shown, the angle-adjustable armrest includes a palm rest plate 1 and an elbow rest plate 2. One end of the elbow rest plate 2 is provided with a connecting boss 11. The connecting boss 11 is hinged to one side of the palm rest plate 1. A palm rest cover 12 is covered on the palm rest plate 1. An upward stop groove 21 that abuts against the palm rest cover 12 is provided on the connecting boss 11 near the hinged side. A downward stop protrusion 22 that abuts against the palm rest plate 1 is provided on the end face of the connecting boss 11.

[0026] Specifically, a connecting boss 11 is provided at the front end of the elbow rest 2, extending between the palm rest 1 and the palm cover 12 for hinged connection. An upward stop groove 21 and a downward stop protrusion 22 are provided on the upper side and end of the connecting boss 11, respectively. These stop structures abut against the palm rest 1 or the palm cover 12 to limit the swing position. In particular, when the downward stop protrusion 22 abuts against the palm rest 1, the palm rest 1 is flush with the elbow rest 2. In this most commonly used position of the armrest, the palm rest 1 maintains good pressure-bearing capacity, making it more stable and durable.

[0027] In this embodiment, a hinge seat is provided on the palm rest 1, and the palm rest cover 12 covers the hinge seat. The connecting boss 11 extends between the palm rest 1 and the palm rest cover 12 and is rotatably connected to the hinge seat via a rotating shaft.

[0028] The hinge position is set in the part covered by the palm rest cover 12, so that the shaft can be hidden therein. When the palm rest 1 is swung to adjust the angle, foreign objects are not easy to enter the rotating area, which can prevent the shaft from being caught by foreign objects and causing jamming or pinching the user's hand.

[0029] In the present invention, an arc-shaped cover plate is provided on the palm rest cover 12 along the shape of the hinge, and the side of the arc-shaped cover plate close to the elbow support plate 2 abuts against the upward stop groove 21 .

[0030] The arc-shaped cover plate is extended to imitate the shape of the hinge seat, which can prevent the palm rest 1 from rubbing against the hinge seat when swinging, and because one side needs to be supported by the upward stop groove 21, the arc-shaped state can also provide better structural strength.

[0031] In this embodiment, a downward stop groove 13 is provided at the end of the palm rest 1 , and the downward stop groove 13 cooperates with and abuts against the downward stop protrusion 22 .

[0032] When the palm rest 1 is laid flat, the downward stop groove 13 and the downward stop protrusion 22 will match each other in a concave-convex manner. Considering that the palm rest 1 is in the most common form when it is laid flat, the armrest is often not only subjected to upper and lower pressures, but also generates horizontal lateral forces when the armrest is twisted. The concave-convex matching can just provide horizontal lateral limiting force, making the flat palm rest 1 more stable.

[0033] In this embodiment, the edges where the lower stop groove 13 and the lower stop protrusion 22 abut against each other are rounded.

[0034] The edges of the contact surface between the lower stop groove 13 and the lower stop protrusion 22 are provided with arc-shaped rounded corners, and some gaps can be exposed on the edges when the two surfaces are closed, which can effectively prevent the user from getting his fingers caught therein and being injured.

[0035] In this embodiment, a damping swing arm 3 is coaxially arranged at the hinge joint of the palm rest plate 1 and the elbow rest plate 2. One end of the damping swing arm 3 is connected to the palm rest plate 1, and the other end of the damping swing arm 3 is connected to the elbow rest plate 2.

[0036] On the basis of connecting the hinge seats of the two plates, an additional damping swing arm 3 is used to strengthen the stability of the palm rest plate 1 and the elbow rest plate 2 during swinging. At the same time, a buckle structure is used to fix the palm rest plate 1 at a certain angle.

[0037] In this embodiment, the damping swing arm 3 includes a palm rest swing arm and an elbow rest swing arm. The rotational connection between the palm rest swing arm and the elbow rest swing arm slides against each other. One end of the palm rest swing arm away from the rotational connection point is fixedly connected to the palm rest plate 1, and one end of the elbow rest swing arm away from the rotational connection point is fixedly connected to the connecting boss 11.

[0038] Among them, the rotational connection between the palm rest swing arm and the elbow rest swing arm is provided with concavo-convex structures distributed radially. By rotating the palm rest swing arm with a certain external force, the original concavo-convex fit is rotated to the concavo-convex fit at the next angle for clamping.

[0039] In this embodiment, an adjustment slider 23 is embedded in the elbow rest plate 2. The opposite side surfaces of the adjustment slider 23 are slidably clamped with the inner wall of the elbow rest plate 2.

[0040] Grooves for the protrusions of the adjustment slider 23 to slide and be clamped are opened on both sides of the groove of the elbow rest plate 2, so that the elbow rest plate 2 can be adjusted to protrude forward and backward and retract.

[0041] In this embodiment, an adjustment turntable 24 is embedded in the adjustment slider 23. The side arc surface of the adjustment turntable 24 is rotatably clamped with the inner wall of the adjustment slider 23, and the axis of the adjustment turntable 24 is connected to the support link 4.

[0042] A circular groove of a size equivalent to that of the adjustment turntable 24 is opened in the embedded groove of the adjustment slider 23. A continuous concave structure is opened on the arc surface of the circular groove, so that the convex structure of the adjustment turntable 24 can jump to concave structures at different angles during rotation, enabling the elbow rest plate 2 to change the horizontal angle according to the support link 4. Embodiment 2

[0043] As Figure 1 shown, the angle-adjustable armrest in Embodiment 1 is applied to a swivel chair. The two sides of the swivel chair seat are respectively installed with left and right armrests through the support links 4, and a structure for up and down adjustment is also provided in the support links 4.

[0044] The support connecting rod 4 is divided into two parts: a movable part and a fixed part. The fixed part is connected to the swivel chair seat cushion. The movable part moves up and down relying on the fixed part. A height adjustment plate is longitudinally arranged inside the fixed part, and a plurality of hook support holes are longitudinally formed on the plate. An L-shaped dial plate with one end extending outwards is arranged inside the movable part. The outer end is used for manually unlocking operations, and a lateral claw is arranged at the inner end to cooperate with each hook support hole on the height adjustment plate.

[0045] When the height of the armrest needs to be adjusted, press the outer end of the L-shaped dial plate. At this time, the inner claw is separated from the hole, and the height of the armrest can be adjusted by sliding up and down. Due to the spring action of the L-shaped dial plate, after releasing the hand, the L-shaped dial plate resets back into the support hole to continue fixed support.

[0046] The specific embodiments described in this document are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An angle-adjustable armrest, comprising a palm rest plate (1) and an elbow rest plate (2), characterized in that, One end of the elbow rest plate (2) is provided with a connecting boss (11). The connecting boss (11) is hinged to one side of the palm rest plate (1). A palm rest cover (12) is covered on the palm rest plate (1). An upward stop groove (21) that abuts against the palm rest cover (12) is provided on the connecting boss (11) near the hinged side. A downward stop projection (22) that abuts against the palm rest plate (1) is provided on the end face of the connecting boss (11).

2. The angle-adjustable armrest according to claim 1, wherein A hinge seat is provided on the palm rest plate (1). The palm rest cover (12) covers the hinge seat. The connecting boss (11) extends between the palm rest plate (1) and the palm rest cover (12) and is rotatably connected to the hinge seat through a rotating shaft.

3. The angle-adjustable armrest according to claim 2, characterized in that, The palm rest cover (12) has an arc-shaped cover plate arranged along the shape of the hinge. One side of the arc-shaped cover plate close to the elbow rest plate (2) abuts in the upward stop groove (21).

4. The angle-adjustable armrest according to claim 2, characterized in that, A downward stop groove (13) is provided at the end of the palm rest plate (1). The downward stop groove (13) cooperates with and abuts against the downward stop projection (22).

5. The angle-adjustable armrest according to claim 4, wherein A fillet is provided on the edge where the downward stop groove (13) abuts against the downward stop projection (22).

6. The angle-adjustable armrest according to claim 1, characterized in that, A damping swing arm (3) is coaxially arranged at the hinge of the palm rest plate (1) and the elbow rest plate (2). One end of the damping swing arm (3) is connected to the palm rest plate (1), and the other end of the damping swing arm (3) is connected to the elbow rest plate (2).

7. The angle-adjustable armrest according to claim 6, characterized in that, The damping swing arm (3) includes a palm rest swing arm and an elbow rest swing arm. The rotating connection parts of the palm rest swing arm and the elbow rest swing arm frictionally slide against each other. One end of the palm rest swing arm far from the rotating connection point is fixedly connected to the palm rest plate (1), and one end of the elbow rest swing arm far from the rotating connection point is fixedly connected to the connecting boss (11).

8. The angle-adjustable armrest according to claim 1, wherein An adjustment slider (23) is embedded in the elbow rest plate (2). The opposite side surfaces of the adjustment slider (23) are slidably clamped with the inner wall of the elbow rest plate (2).

9. The angle-adjustable armrest according to claim 8, characterized in that, An adjustment turntable (24) is embedded in the adjustment slider (23). The side arc surface of the adjustment turntable (24) is rotatably clamped with the inner wall of the adjustment slider (23). The axis of the adjustment turntable (24) is connected to the support connecting rod (4).

10. Swivel chair, characterized in that, The swivel chair includes the armrest with adjustable angle according to any one of claims 1-9.

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