Tray

Abstract

The utility model provides a tray which comprises a base serving as a main body support, a seat connecting piece used for being connected with a chair seat and a movement assembly achieving swinging, the seat connecting piece is connected to the base in a swinging mode through the movement assembly, the movement assembly comprises a middle connecting piece, a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are arranged on the middle connecting piece. The first rotating shaft is arranged on the base in the left-right direction, so that the middle connecting piece can swing front and back on the base, the second rotating shaft is arranged on the seat connecting piece in the front-back direction, so that the seat connecting piece can swing front, back, left and right on the base, multi-direction dynamic swing of the seat is achieved, comfort is improved, and the seat adapts to more human body sitting postures; the problem of sedentariness is avoided, and healthy sitting is realized; and an elastic buffer piece is further arranged between the middle connecting piece and the seat connecting piece, so that the comfort is further improved.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to a tray. Background Technology

[0002] Chairs, as one of the most common pieces of furniture, accompany us for a significant portion of the day, especially in offices where users spend most of their time sitting. However, prolonged sitting has led to an increasing number of comfort and health problems. In terms of comfort, maintaining the same posture for extended periods can cause fatigue, neck and back discomfort, numbness in the hips and legs, and other discomforts that make it difficult to maintain a pleasant mood and focus on work. In terms of health, prolonged sitting in the same position can compress the lumbar spine and legs, leading to an increased incidence of diseases such as lumbar spondylosis.

[0003] It has been found that getting up after sitting for a long time can relieve fatigue, and changing sitting posture while sitting can also effectively eliminate fatigue and reduce the harm caused by prolonged sitting. Therefore, the key to solving the above problems and achieving more comfortable and healthy sitting is to make changing sitting posture more flexible and comfortable. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides a tray, including a base as the main support, a seat connector for connecting a chair seat, and a swinging motion component. The seat connector is swingably connected to the base via the motion component. The motion component includes an intermediate connector and a first pivot and a second pivot disposed on the intermediate connector. The first pivot is disposed on the base in a left-right direction, allowing the intermediate connector to swing back and forth on the base. The second pivot is disposed on the seat connector in a front-back direction, allowing the seat connector to swing back, forth, left, and right on the base. This enables multi-directional dynamic swinging of the chair seat, improving comfort, accommodating more human sitting postures, preventing prolonged sitting, and achieving healthy sitting. An elastic buffer is also provided between the intermediate connector and the seat connector to further increase comfort.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A tray includes a base, a seat connector, and a motion assembly. The base is configured as a main support, the seat connector is configured as a seat connecting to a chair, and the seat connector is connected to the base via the motion assembly. The motion assembly is configured to allow the seat connector to swing back and forth and left and right on the base. The motion assembly includes a first rotating shaft, a second rotating shaft, and an intermediate connecting member. The first and second rotating shafts are both inserted into the intermediate connecting member. The first rotating shaft is arranged in the left-right direction, and the second rotating shaft is arranged in the front-back direction. The intermediate connecting member is rotatably connected to the base via the first rotating shaft, and the seat connector is rotatably connected to the intermediate connecting member via the second rotating shaft. An elastic buffer is provided between the intermediate connecting member and the seat connector, and the elastic buffer is configured to provide swing cushioning and restoring force for the seat connector.

[0007] The base, used to connect the gas spring of the chair, remains stationary within the chassis assembly and serves as the main support for the multi-directional swing of the seat connector. The motion assembly allows the seat connector to swing in multiple directions on the base. After the intermediate connector is rotatably mounted on the base via a first pivot, it can swing back and forth on the base. After the seat connector is rotatably mounted on the intermediate connector via a second pivot, it can swing left and right on the intermediate connector. This allows the seat connector and the connected chair seat to swing back, forth, left, and right on the base. The elastic buffer provides cushioning to increase comfort when the seat connector swings left and right, and also keeps the seat connector horizontal when there is no force or when the left and right forces are balanced.

[0008] Preferably, the elastic buffer is a spring, with at least two springs symmetrically distributed on both sides of the second rotating shaft. A single spring or two springs on one side are acceptable, but the number of springs on both sides of the second rotating shaft should be the same to maintain force balance. Alternatively, a spring can be installed between the intermediate connecting piece and the base, with one spring at the front and one at the rear of each, so that the back-and-forth swing also has elastic buffering and restoring force.

[0009] Preferably, the system also includes an operating lever, which is inserted into the base and the intermediate connecting member in a left-right direction. The operating lever is located beside the first rotating shaft and includes a locking part and a handle, which are the two ends of the operating lever, respectively. A locking hole is provided on the base, and the operating lever is slidably mounted on the base. The locking part and the locking hole are configured such that when the operating lever slides to disengage the locking part from the locking hole, the intermediate connecting member can swing relative to the base; when the operating lever slides to engage the locking part into the locking hole, the intermediate connecting member remains relatively stationary with respect to the base. The pull-out operating lever is convenient for user operation, and the movement of the operating lever enables the intermediate connecting member to swing back and forth to lock and unlock.

[0010] Preferably, the base has a clearance groove at the end near the handle, and the clearance groove is configured to avoid the operating lever when the intermediate connector swings on the base.

[0011] Preferably, the system also includes an operating lever, which is inserted into the base and the intermediate connecting member in a left-right direction. The operating lever serves as the first rotating shaft. In this design, the intermediate connecting member rotates directly around the operating lever, saving the cost of the first rotating shaft and the aforementioned clearance groove.

[0012] Preferably, the intermediate connector has a shaft hole for inserting the operating rod, and a locking groove extends outward from the shaft hole. A locking protrusion is provided on the operating rod. The operating rod is slidably connected to both the intermediate connector and the base. The locking groove and locking protrusion are configured such that when the operating rod slides to insert the locking protrusion into the locking groove, the intermediate connector and the base remain relatively stationary; when the operating rod slides to remove the locking protrusion from the locking groove, the intermediate connector can swing relative to the base. Similarly, the base needs to have a hole for inserting the operating rod, and a locking groove is also provided in the hole. After the locking protrusion enters both locking grooves, the intermediate connector can no longer swing back and forth relative to the base. This design ensures that the operating rod is always inserted through the base and the intermediate connector, meaning that both ends of the operating rod always protrude from the chassis device, thus guaranteeing the connection stability of the operating rod within the chassis device and preventing it from easily detaching.

[0013] Preferably, the intermediate connector is disposed in the base, and the bottom of the intermediate connector has a clearance hole for avoiding the air rod; the length of the clearance hole in the front-to-back direction is greater than the diameter of the air rod. The clearance hole allows the intermediate connector, even when it is large in volume, to avoid the air rod during movement, thus enabling it to swing back and forth smoothly; the intermediate connector is large in volume, resulting in higher stability; the intermediate connector can also be a small block-shaped part, with a simple structure and lower cost.

[0014] Preferably, the bottom of the base is provided with a sleeve for mounting the gas rod. The sleeve protrudes upward from the interior of the base and enters a clearance hole. The length of the clearance hole in the front-to-back direction is greater than the outer diameter of the sleeve. The gas rod is inserted into the sleeve, making the connection more stable. When the intermediate connector swings back and forth, the sleeve on the base does not move. Therefore, a clearance hole is needed to allow space for the sleeve to swing.

[0015] Preferably, the seat connector includes at least two downwardly protruding connecting ears, which are arranged at a distance from each other, and a second rotating shaft is inserted into the two connecting ears. The seat connector can be a plate, which only needs to be provided at the bottom to rotate and connect with the middle connector, resulting in a simple structure and low cost.

[0016] Preferably, there are two second pivots, each protruding from the front and rear ends of the intermediate connector. The two second pivots are coaxial and spaced apart. The spacing between the two second pivots precisely avoids the gas spring, thereby reducing the thickness of the chassis, making the overall structure thinner, and reducing the distance between the seat surface and the bottom surface of the chassis. This lowers the minimum seat height, resulting in greater comfort. If the minimum seat height is too high, the front of the seat may dig into the thigh when the chair is tilted back, thus reducing comfort.

[0017] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0018] The base, used to connect the gas spring of the chair, remains stationary within the chassis assembly and serves as the main support for the multi-directional swing of the seat connector. The motion assembly allows the seat connector to swing in multiple directions on the base. After the intermediate connector is rotatably mounted on the base via a first pivot, it can swing back and forth on the base. After the seat connector is rotatably mounted on the intermediate connector via a second pivot, it can swing left and right on the intermediate connector. This allows the seat connector and the connected chair seat to swing back, forth, left, and right on the base. The elastic buffer provides cushioning to increase comfort when the seat connector swings left and right, and also keeps the seat connector horizontal when there is no force or when the left and right forces are balanced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the tray in Embodiment 1 of this utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the tray in Embodiment 1 of this utility model. Figure 2 ;

[0021] Figure 3 This is an exploded view of the tray in Embodiment 1 of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the base in Embodiment 1 of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the motion component in Embodiment 1 of this utility model;

[0024] Figure 6 This is a three-dimensional structural diagram of the seat connector in Embodiment 1 of this utility model;

[0025] Figure 7 This is an exploded view of the tray in Embodiment 2 of this utility model.

[0026] The reference numerals in the attached drawings are as follows: base 1; seat connector 2; intermediate connector 3; first rotating shaft 4; second rotating shaft 5; spring 6; sleeve 7; clearance hole 8; connecting ear 9; operating lever 10; locking part 101; locking hole 11; clearance groove 12; shaft hole 13; locking groove 14; locking protrusion 15; insertion hole 16. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] The specific embodiments of this utility model are as follows: Example

[0031] like Figure 1-3 As shown, this utility model provides a tray, including a base 1, a seat connector 2, and a motion component. The base 1 is configured as a main support, and the seat connector 2 is configured as a seat connecting to a chair. The seat connector 2 is connected to the base 1 through the motion component, which is configured to allow the seat connector 2 to swing back and forth and left and right on the base 1. The motion component includes a first rotating shaft 4, a second rotating shaft 5, and an intermediate connector 3. The first rotating shaft 4 and the second rotating shaft 5 are both inserted into the intermediate connector 3. The first rotating shaft 4 is arranged in the left-right direction, and the second rotating shaft 5 is arranged in the front-back direction. The intermediate connector 3 is rotatably connected to the base 1 through the first rotating shaft 4, and the seat connector 2 is rotatably connected to the intermediate connector 3 through the second rotating shaft 5. An elastic buffer is provided between the intermediate connector 3 and the seat connector 2. The elastic buffer is configured to provide swing buffering and restoring force for the seat connector 2.

[0032] The base 1 is used to connect the gas spring of the chair and remains stationary in the chassis device. It can serve as the main support for the seat connector 2 to swing in multiple directions. The motion component allows the seat connector 2 to swing in multiple directions on the base 1. After the intermediate connector 3 is rotatably mounted on the base 1 via the first rotating shaft 4, the intermediate connector 3 can swing back and forth on the base 1. After the seat connector 2 is rotatably mounted on the intermediate connector 3 via the second rotating shaft 5, the seat connector 2 can swing left and right on the intermediate connector 3. Thus, the seat connector 2 and the chair seat connected to it can swing back and forth and left and right on the base 1.

[0033] The elastic buffer can provide cushioning and increase comfort when the seat connector 2 swings left and right, and can keep the seat connector 2 horizontal when it is not under force or when the left and right forces are balanced.

[0034] Specifically, such as Figure 2-5 As shown, the first rotating shaft 4 passes through the base 1 and the intermediate connecting member 3 from both sides. The base 1 is an upwardly open shell, and the intermediate connecting member 3 is also a shell located within the base 1. The bottom of the base 1 has a sleeve 7 for housing the gas rod, which protrudes upwards into the base 1. The bottom of the intermediate connecting member 3 has a clearance hole 8 for avoiding the gas rod and the sleeve 7. The sleeve 7 enters the clearance hole 8. The length of the clearance hole 8 in the front-to-back direction is greater than the diameter of the gas rod and also greater than the outer diameter of the sleeve 7, providing space for the intermediate connecting member 3 to swing back and forth. The gas rod is inserted into the sleeve 7, making the connection more stable. When the intermediate connecting member 3 swings back and forth, the sleeve 7 on the base 1 remains stationary. Therefore, the clearance hole 8 is needed to avoid the gas rod and the sleeve 7, allowing the intermediate connecting member 3 to swing smoothly back and forth. In this design, the intermediate connecting member 3 is a shell, which has a large volume and high connection stability. Alternatively, the intermediate connecting member 3 could also be a smaller, block-shaped part, with a simpler structure and lower cost.

[0035] like Figure 6 As shown, the seat connector 2 includes at least two downwardly protruding connecting ears 9. In this embodiment, there are a total of four connecting ears 9. The connecting ears 9 are arranged in pairs with a front-to-back interval, and the two sets of connecting ears 9 are located at the front end and the rear end of the middle connector 3, respectively. The second rotating shaft 5 is inserted on the two sets of connecting ears 9. The seat connector 2 is a plate, and it is only necessary to set the connecting ears 9 at the bottom and rotate them to connect with the middle connector 3. The structure is simple and the cost is low.

[0036] The intermediate connector 3 is suspended in the base 1, that is, in the vertical direction, there is a gap between the base 1 and the intermediate connector 3 so that the intermediate connector 3 has room to swing on the base 1. Similarly, there is also a gap between the seat connector 2 and the intermediate connector 3 so that the seat connector 2 has room to swing on the intermediate connector 3.

[0037] Furthermore, such as Figure 3 , 5 As shown, the elastic buffer is a spring 6, and there are at least two springs 6, which are symmetrically distributed on both sides of the second rotating shaft 5. One spring 6 on one side or two springs on one side are both acceptable. The number of springs 6 on both sides of the second rotating shaft 5 should be the same to maintain force balance. In this embodiment, one spring 6 is provided on each side of the second rotating shaft 5. In addition, this solution can also provide a spring (not shown) between the intermediate connecting member 3 and the base 1, with one spring at the front and one at the rear of both, so that the back and forth swing also has elastic buffer and restoring force. It is difficult for other similar chassis to provide springs for back and forth swing.

[0038] There are two second pivots 5, which are respectively protruding from the front and rear ends of the intermediate connector 3. The two second pivots 5 are coaxial and spaced apart. The spacing between the two second pivots 5 can just avoid the gas spring, thereby reducing the thickness of the chassis, making the whole structure thinner, and the distance between the seat surface and the bottom surface of the chassis is smaller, thus lowering the minimum height of the seat surface and improving comfort. If the minimum height of the seat surface is too high, the front of the seat may easily dig into the thigh when the chair is tilted back, thereby reducing comfort.

[0039] like Figure 1-4 As shown, it also includes an operating lever 10, which is inserted into the base 1 and the intermediate connecting member 3 in a left-right direction. The operating lever 10 is located beside the first rotating shaft 4. The operating lever 10 includes a locking part 101 and a handle (not shown), with the locking part 101 and the handle being the two ends of the operating lever 10, respectively. A locking hole 11 is provided on the base 1. The operating lever 10 is slidably disposed on the base 1. The locking part 101 and the locking hole 11 are configured such that when the operating lever 10 slides and causes the locking part 101 to leave the locking hole 11, the intermediate connecting member 3 can... The lever 10 can swing relative to the base 1; when the operating lever 10 slides to make the locking part 101 enter the locking hole 11, the intermediate connector 3 and the base 1 remain relatively stationary; the pull-out operating lever 10 is convenient for the user to operate, and the movement of the operating lever 10 can realize the locking and unlocking of the intermediate connector 3 by swinging back and forth; the base 1 has a relief groove 12 at the end near the handle, and the relief groove 12 is configured to avoid the operating lever 10 when the intermediate connector 3 swings on the base 1; rotating the operating lever 10 can also be used to control the lifting and lowering of the gas cylinder.

[0040] Example 2: The only difference between this example and Example 1 is that the first rotating shaft 4 is part of the operating lever 10. Specifically:

[0041] like Figure 7As shown, the operating lever 10 is inserted into the base 1 and the intermediate connecting member 3 in the left-right direction, and the operating lever 10 is the first rotating shaft 4. In this scheme, the intermediate connecting member 3 directly rotates around the operating lever 10, saving the cost of the first rotating shaft 4 and the aforementioned clearance groove 12. The intermediate connecting member 3 has a shaft hole 13 for inserting the operating lever 10, and a locking groove 14 extends outward from the shaft hole 13. A locking protrusion 15 is protruding on the operating lever 10, and the locking protrusion 15 is located in the middle of the operating lever 10 to be close to the base 1 and the intermediate connecting member 3. The operating lever 10 is slidably connected to the intermediate connecting member 3 and the base 1. The locking groove 14 and the locking protrusion 15 are configured such that when the operating lever 10 slides, the locking protrusion 15... When the operating rod 10 is inserted into the locking groove 14, the intermediate connector 3 remains relatively stationary with respect to the base 1. When the operating rod 10 slides to make the locking protrusion 15 leave the locking groove 14, the intermediate connector 3 can swing relative to the base 1. An insertion hole 16 is provided on the base 1 for the operating rod 10 to be inserted, and a locking groove 14 is also provided on the insertion hole 16. After the locking protrusion 15 enters the two locking grooves 14, the intermediate connector 3 can no longer swing back and forth relative to the base 1. This scheme ensures that the operating rod 10 is always inserted through the base 1 and the intermediate connector 3, that is, both ends of the operating rod 10 always protrude from the chassis device, thereby ensuring the connection stability of the operating rod 10 in the chassis device and preventing it from easily detaching.

Claims

1. A tray, characterized in that: The device includes a base, a seat connector, and a motion assembly. The base serves as the main support, the seat connector serves as the seat for connecting a chair, and the seat connector is connected to the base via the motion assembly. The motion assembly is configured to allow the seat connector to swing back and forth and left and right on the base. The motion assembly includes a first rotating shaft, a second rotating shaft, and an intermediate connecting member. Both the first and second rotating shafts are inserted into the intermediate connecting member. The first rotating shaft is arranged in the left-right direction, and the second rotating shaft is arranged in the front-back direction. The intermediate connecting member is rotatably connected to the base via the first rotating shaft, and the seat connector is rotatably connected to the intermediate connecting member via the second rotating shaft. An elastic buffer is provided between the intermediate connecting member and the seat connector, which is configured to provide swing buffering and restoring force for the seat connector. The intermediate connecting member is located in the base, and a clearance hole is provided at the bottom of the intermediate connecting member to avoid the gas spring. The front-back length of the clearance hole is greater than the diameter of the gas spring. A sleeve for fitting the gas spring is provided at the bottom of the base. The sleeve protrudes upward into the base and enters the clearance hole, and the front-back length of the clearance hole is greater than the outer diameter of the sleeve.

2. The pallet according to claim 1, characterized in that: The elastic buffer is a spring, and there are at least two springs, which are symmetrically distributed on both sides of the second rotating shaft.

3. The pallet according to claim 1, characterized in that: It also includes an operating lever, which is inserted into the base and the intermediate connecting member in the left-right direction. The operating lever is located next to the first rotating shaft. The operating lever includes a locking part and a handle, which are the two ends of the operating lever, respectively. A locking hole is provided on the base. The operating lever is slidably mounted on the base. The locking part and the locking hole are configured such that when the operating lever slides and causes the locking part to leave the locking hole, the intermediate connecting member can swing relative to the base. When the operating lever slides and causes the locking part to enter the locking hole, the intermediate connecting member and the base remain relatively stationary.

4. The tray according to claim 3, characterized in that: The base has a clearance groove at the end near the handle. The clearance groove is configured to avoid the operating lever when the intermediate connector swings on the base.

5. The pallet according to claim 1, characterized in that: It also includes an operating lever, which is inserted into the base and the intermediate connecting member in the left-right direction. The operating lever is the first rotating shaft.

6. The pallet according to claim 5, characterized in that: The intermediate connector has a shaft hole for inserting the operating rod, and a locking groove extends outward from the shaft hole. The operating rod has a locking protrusion. The operating rod is slidably connected to the intermediate connector and the base. The locking groove and the locking protrusion are configured such that when the operating rod slides to insert the locking protrusion into the locking groove, the intermediate connector and the base remain relatively stationary. When the operating rod slides to remove the locking protrusion from the locking groove, the intermediate connector can swing relative to the base.

7. The pallet according to claim 1, characterized in that: The seat connector includes at least two downwardly protruding connecting ears, which are arranged at a distance from each other, and a second rotating shaft is inserted into the two connecting ears.

8. The pallet according to claim 1, characterized in that: There are two second rotating shafts, which are respectively protruding from the front and rear ends of the intermediate connector. The two second rotating shafts are coaxial and spaced apart.

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