A chair base and seat

Abstract

This utility model provides a chair base and seat, relating to the field of chair frame technology. The chair base includes a connecting seat, a gas spring, and multiple chair legs, with the gas spring housed within the connecting seat. The extension and retraction of the gas spring allows for the raising and lowering of the seat cushion support frame of the chair base. Furthermore, the gas spring enables stepless height adjustment of the chair base, and the adjustment is relatively quiet. In addition, multiple chair legs are spaced circumferentially around the connecting seat; one end of each chair leg is hinged to the connecting seat, and the middle of each chair leg is slidably connected to the connecting seat. By sliding the chair legs to the connecting seat, the chair legs can be folded or unfolded. When not in use, the chair legs can be folded to reduce volume and facilitate carrying.

Description

Technical Field

[0001] This utility model relates to the field of seat frame technology, and more specifically, to a chair base and a seat. Background Technology

[0002] A chair is a piece of furniture or tool for sitting or lying down, widely used in homes, offices, public places, and transportation. Its design not only affects comfort but is also closely related to health (such as spinal protection), work efficiency, and the aesthetics of the space. Hunting swivel chairs are generally used in outdoor hunting settings, such as fishing and hunting.

[0003] However, most hunting swivel chairs in related technologies cannot automatically adjust the chair height, and those that can adjust the chair height often emit a lot of noise that scare away prey. Utility Model Content

[0004] This utility model provides a chair base and seat, which can fold down the chair legs and adjust the height of the chair base, and the noise is relatively small when adjusting and using it.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a chair base, which includes:

[0007] Connector;

[0008] A pneumatic rod, wherein the pneumatic rod is disposed within the connecting seat;

[0009] Multiple chair legs are arranged circumferentially around the connecting seat; one end of each chair leg is hinged to the connecting seat, and the middle part of each chair leg is slidably connected to the connecting seat.

[0010] In an optional embodiment, the chair base further includes a sliding sleeve and a plurality of connecting rods. The sliding sleeve is fitted onto the outer wall of the connecting seat and can slide relative to the connecting seat. The plurality of connecting rods are arranged one-to-one with the plurality of chair legs. One end of each connecting rod is hinged to the sliding sleeve, and the other end of each connecting rod is hinged to the middle of the corresponding chair leg.

[0011] In an optional embodiment, the chair base further includes a plurality of omnidirectional feet, each of which is configured to correspond one-to-one with a plurality of chair legs; each of the omnidirectional feet is connected to the end of the corresponding chair leg away from the connecting seat.

[0012] In an optional implementation, for each swivel foot, the swivel foot includes a foot plate, a ball joint, and an inner leg tube, the ball joint being mounted on the foot plate, one end of the inner leg tube being connected to the ball joint, and the other end of the inner leg tube being connected to the chair leg.

[0013] In an optional embodiment, the chair base further includes multiple leg adjusters, each corresponding to one of the multiple omnidirectional feet; the inner leg is a telescopic rod, and the inner leg is movably connected to the chair legs through the leg adjusters.

[0014] In an optional embodiment, the chair base further includes a seat support frame, which is connected to the gas spring, and the gas spring can drive the seat support frame to extend and retract vertically.

[0015] In an optional embodiment, the chair base further includes an explosion-proof base disposed between the seat cushion support frame and the gas spring.

[0016] In an optional embodiment, the chair base further includes a lifting handle connected to the gas spring.

[0017] An embodiment of this utility model also provides a seat, including a seat cushion support frame, a backrest support frame, and a chair base as described in any of the above embodiments. The seat cushion support frame is connected to the gas spring, and the gas spring can drive the seat cushion support frame to rise and fall. The backrest support frame is movably connected to the seat cushion support frame.

[0018] In an optional embodiment, the seat further includes armrests and armrest support tubes, one end of the armrests being hinged to the backrest support, and the other end of the armrests being hinged to the armrest support tubes; the end of the armrest support tubes away from the armrests is hinged to the seat cushion support frame.

[0019] The beneficial effects of the chair base and seat of this utility model embodiment include, for example:

[0020] The chair base includes a connecting seat, a gas spring, and multiple chair legs, with the gas spring fitted inside the connecting seat. The extension and retraction of the gas spring raises and lowers the seat support frame of the chair base, allowing for stepless height adjustment of the chair base with minimal noise. Furthermore, the multiple chair legs are evenly spaced around the circumference of the connecting seat; for each leg, one end is hinged to the connecting seat, and the middle of the leg is slidably connected to the connecting seat. By sliding the chair legs to the connecting seat, they can be folded or unfolded. When transporting the chair base, the chair legs can be folded to reduce volume and facilitate carrying. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the seat provided in an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the chair base provided in an embodiment of the present utility model;

[0024] Figure 3 This is an exploded view of the chair base provided in an embodiment of the present invention.

[0025] Icons: 1000-Seat; 100-Chair base; 110-Connector; 120-Gas spring; 130-Chair leg; 140-Sliding sleeve; 141-Sliding sleeve body; 142-Connecting part; 1421-First connecting part; 1422-Second connecting part; 150-Connecting rod; 160-Universal foot; 161-Footplate; 162-Ball end; 163-Inner foot tube; 170-Foot tube adjuster; 180-Explosion-proof base; 190-Lifting handle; 200-Seat cushion support frame; 300-Backrest support; 400-Armrest; 500-Armrest support tube. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0032] A chair is a piece of furniture or tool for sitting or lying down, widely used in homes, offices, public places, and transportation. Its design not only affects comfort but is also closely related to health (such as spinal protection), work efficiency, and the aesthetics of the space. Hunting swivel chairs are generally used in outdoor hunting locations, such as fishing and hunting. However, most hunting swivel chairs in this technology do not have automatic height adjustment, and those that can are often quite noisy and scare away prey.

[0033] Based on this, please refer to Figure 1 and Figure 2 The chair base 100 provided in the embodiments of this utility model can solve the aforementioned technical problems. The chair base 100 can fold down the chair legs 130, making it easy to carry when not in use. Furthermore, the chair base 100 is height-adjustable, and the adjustment is relatively quiet, so it won't scare away prey. The chair base 100 is applied to the seat 1000, and the seat 1000 with the chair base 100 also has the same functions as described above; therefore, no limitation is made here.

[0034] Figure 1 This is a schematic diagram of the seat 1000 provided in an embodiment of this utility model. Please refer to... Figure 1In this embodiment, the seat 1000 includes a seat cushion support frame 200, a backrest support frame 300, and a chair base 100. The seat cushion support frame 200 is connected to a gas spring 120, which can extend and retract the seat cushion support frame 200 vertically. The backrest support frame 300 is movably connected to the seat cushion support frame 200. By movably connecting the backrest support frame 300 to the seat cushion support frame 200, when the seat 1000 needs to be taken away, the backrest support frame 300 can be rotated to fold towards the seat cushion support frame 200, thereby reducing the overall volume of the seat 1000 and making it easier to carry. When it is necessary to sit down, the folded backrest support frame 300 can be rotated to form a right angle or an obtuse angle with the seat cushion support frame 200 for sitting down, improving user comfort. Of course, the backrest support frame 300 can also be fixedly connected to the seat cushion support frame 200, such as by welding, etc., which is not limited here.

[0035] To improve the connection strength between the backrest support 300 and the seat cushion support frame 200, a reinforcing rib is provided at the connection point. In this embodiment, the reinforcing rib has an "L"-shaped cross-section, and the portion of the reinforcing rib includes a portion of the backrest support 300 to limit the rotation angle of the backrest support 300 relative to the seat cushion support frame 200. Of course, the reinforcing rib can also be designed in other shapes, such as triangles, etc., and is not limited here. The rotation angle between the backrest support 300 and the seat cushion support frame 200 can also be limited by other limiting structures. The limiting structure can be integrated into the reinforcing rib, or the limiting structure and the reinforcing rib can be designed as separate structures, and is not limited here. The limiting structure can be a limiting bolt or a locking structure, depending on actual practical needs and cost, and is not limited here.

[0036] Please continue reading. Figure 1To enhance comfort, reduce fatigue, and improve posture stability, the seat 1000 in this embodiment also includes armrests 400 and armrest support tubes 500. One end of the armrest 400 is hinged to the backrest support 300, and the other end is hinged to the armrest support tube 500. The end of the armrest support tube 500 away from the armrest 400 is hinged to the seat cushion support frame 200. By providing the armrests 400, the elbows and forearms can be supported, reducing muscle tension in the shoulders, neck, and upper back, making it especially suitable for prolonged sitting. Resting the arms on the armrests 400 also reduces the load on the hips and lumbar spine, decreasing fatigue. Furthermore, the armrests 400 enhance stability when sitting, and the weight can be used for support when sitting down or getting up, reducing the risk of falls. The two ends of the armrest support tube 500 are hinged to the armrest 400 and the seat cushion support frame 200, respectively. By rotating the armrest support tube 500, the armrest 400 can rotate relative to the backrest support 300, thereby enabling the armrest 400 to be folded and unfolded. When it is necessary to move the seat 1000 to other locations, the armrest 400 can be folded to reduce the overall volume of the seat 1000 for easier carrying. Furthermore, the armrest 400 can be fixedly connected to the backrest support 300, and the two ends of the armrest support tube 500 can also be fixedly connected to the armrest 400 and the seat cushion support frame 200. This fixed connection can be achieved through welding or other methods, which are not limited here. Alternatively, the armrest 400 can be detachably connected to the backrest support 300, and the two ends of the armrest support tube 500 can also be detachably connected to the armrest 400 and the seat cushion support frame 200. The armrest 400 and the armrest support tube 500 can be detached for easy transport. The detachable connection here can be a threaded connection, a snap-fit ​​connection, etc., and is not limited here.

[0037] The chair base 100 will be described in detail below.

[0038] Figure 2 This is a schematic diagram of the chair base 100 provided in an embodiment of the present utility model; Figure 3 This is an exploded view of the chair base 100 provided in an embodiment of this utility model. Figure 2 and Figure 3As shown, the chair base 100 in this embodiment includes a connecting seat 110, a gas spring 120, and multiple chair legs 130. The gas spring 120 is fitted inside the connecting seat 110. The extension and retraction of the gas spring 120 can raise and lower the seat cushion support frame 200 of the chair base 100. Furthermore, the gas spring 120 enables stepless height adjustment of the chair base 100, allowing adjustment to any height desired by the user. Compared to existing adjustment mechanisms, this is more convenient, provides a better user experience, and is quieter during adjustment and use. In addition, multiple chair legs 130 are spaced circumferentially around the connecting seat 110; one end of each chair leg 130 is hinged to the connecting seat 110, and the middle of each chair leg 130 is slidably connected to the connecting seat 110. By sliding the chair legs 130 to the connecting seat 110, the chair legs 130 can be folded or unfolded. When not in use, the chair legs 130 can be folded to reduce volume and facilitate carrying.

[0039] In this embodiment, the multiple chair legs 130 are evenly and spaced around the connecting seat 110 to improve the stability of the chair base 100 when placed on the ground. Of course, the multiple chair legs 130 can also be unevenly arranged, as long as they can stably support the ground when unfolded. The distribution of the multiple chair legs 130 is not limited here.

[0040] Specifically, the chair base 100 in this embodiment also includes a seat cushion support frame 200, which is connected to a gas spring 120. The gas spring 120 can drive the seat cushion support frame 200 to extend and retract vertically. By providing the seat cushion support frame 200, a seat cushion can be installed on it.

[0041] To allow multiple chair legs 130 to slide simultaneously relative to the connecting seat 110, so that multiple chair legs 130 can be folded or unfolded at the same time, simplifying the folding and unfolding operation and shortening the operation time, please refer to [link to relevant documentation]. Figure 2 and Figure 3In this embodiment, the chair base 100 further includes a sliding sleeve 140 and multiple connecting rods 150. The sliding sleeve 140 is fitted onto the outer wall of the connecting seat 110 and can slide relative to the connecting seat 110. Each connecting rod 150 corresponds to one of the chair legs 130. One end of each connecting rod 150 is hinged to the sliding sleeve 140, and the other end is hinged to the middle of the corresponding chair leg 130. By moving the sliding sleeve 140, multiple chair legs 130 can be simultaneously moved up and down relative to the connecting seat 110. In this embodiment, moving the sliding sleeve 140 upwards and simultaneously moving multiple chair legs 130 upwards allows the chair legs 130 to be folded; moving the sliding sleeve 140 downwards and simultaneously moving multiple chair legs 130 downwards allows the chair legs 130 to be unfolded. By using the sliding sleeve 140, the installation process is simplified, the unfolding and folding operations are simplified, and the adjustment of the chair legs 130 is convenient. Of course, each chair leg 130 can also be individually hinged to the connecting seat 110, which is not limited here.

[0042] The sliding sleeve 140 in this embodiment includes an annular sliding sleeve body 141 and a plurality of connecting portions 142. The plurality of connecting portions 142 are arranged at intervals around the circumference of the sliding sleeve body 141, and each connecting portion 142 protrudes from the outer wall of the sliding sleeve body 141. Each connecting portion 142 is used to connect the sliding sleeve body 141 and a chair leg 130. Because the plurality of chair legs 130 in this embodiment are evenly and at intervals around the circumference of the connecting seat 110, the plurality of connecting portions 142 in this embodiment are also evenly and at intervals around the circumference of the sliding sleeve body 141. Of course, the plurality of connecting portions 142 may also be unevenly arranged, depending on the distribution of the plurality of chair legs 130, and is not limited here. Each connecting part 142 includes a first connecting part 1421 and a second connecting part 1422 spaced apart. The first connecting part 1421 and the second connecting part 1422 are provided with mounting holes. The chair leg 130 is located between the first connecting part 1421 and the second connecting part 1422, and the rotating shaft passes through the mounting holes on the first connecting part 1421 and the second connecting part 1422 and the chair leg 130 to hinge the chair leg 130 to the first connecting part 1421 and the second connecting part 1422.

[0043] In this embodiment, there are four chair legs 130. Of course, the number of chair legs 130 can also be three, five, or more, as long as the chair base 100 can be placed stably when the chair legs 130 are unfolded. The number of chair legs 130 is not limited here.

[0044] Please continue reading. Figure 2 and Figure 3In this embodiment, the chair base 100 also includes a plurality of omnidirectional feet 160, which are arranged one-to-one with a plurality of chair legs 130; each omnidirectional foot 160 is connected to the end of the corresponding chair leg 130 away from the connecting seat 110. By setting the omnidirectional feet 160, the flexibility and stability of the chair base 100 in movement can be improved.

[0045] To ensure the chair remains stable on the ground when the user is seated for activities such as fishing or hunting, this embodiment includes a swivel foot 160. Each swivel foot 160 comprises a footplate 161, a ball joint 162, and an inner leg tube 163. The ball joint 162 is mounted on the footplate 161, one end of the inner leg tube 163 is connected to the ball joint 162, and the other end of the inner leg tube 163 is connected to the chair leg 130. The footplate 161 is connected to the chair leg 130 via the ball joint 162 and the inner leg tube 163. The chair leg 130 can rotate relative to the footplate 161 via the ball joint 162 to adapt to different ground conditions, thereby helping the user maintain stability under various ground conditions. Of course, the swivel foot 160 can also be designed as a caster wheel structure or other structural forms, which are not limited here.

[0046] To adjust the height of the chair legs 130 to accommodate different height requirements and improve the stability and comfort of the chair base 100, please refer to [link / reference needed]. Figure 2 and Figure 3 In this embodiment, the chair base 100 also includes multiple leg adjusters 170, each corresponding to a multiple universal legs 160. The inner leg 163 is a telescopic rod, movably connected to the chair legs 130 via the leg adjusters 170. The leg adjusters 170 can adjust the length of the inner leg 163, thereby adjusting the length of the chair legs 130. Specifically, in this embodiment, one end of the inner leg 163 is embedded in a ball joint 162. While extending or shortening, the inner leg 163 can also swing around the center of the ball to adapt to different angle requirements.

[0047] Please continue reading. Figure 2 and Figure 3 In this embodiment, the chair base 100 also includes an explosion-proof base 180, which is disposed between the seat cushion support frame 200 and the gas spring 120. The main mechanism by which the explosion-proof base 180 protects the gas spring 120 is by adding an insulating layer, typically a 3mm thick steel plate. This design can prevent the gas spring 120 from exploding and causing injury to the user in the event of an abnormal increase in internal air pressure or a problem with its sealing performance. Of course, the probability of the gas spring 120 exploding can also be reduced by increasing the wall thickness of the seat cushion support frame 200.

[0048] In addition, to facilitate the user in raising and lowering the seat support frame 200 by pressing the gas spring 120, the chair base 100 in this embodiment also includes a lifting handle 190, which is connected to the gas spring 120. By pressing the lifting handle 190, the gas spring 120 can be pressed, causing the gas spring 120 to rise or fall, thereby raising and lowering the seat support frame 200.

[0049] In summary, the chair base 100 includes a connecting seat 110, a gas spring 120, and multiple chair legs 130, with the gas spring 120 housed within the connecting seat 110. The extension and retraction of the gas spring 120 allows for the raising and lowering of the seat cushion support frame 200 of the chair base 100. Furthermore, the gas spring 120 enables stepless height adjustment of the chair base 100, and the adjustment and operation are relatively quiet. In addition, the multiple chair legs 130 are spaced circumferentially around the connecting seat 110; one end of each chair leg 130 is hinged to the connecting seat 110, and the middle of each chair leg 130 is slidably connected to the connecting seat 110. By sliding the chair legs 130 to the connecting seat 110, the chair legs 130 can be folded or unfolded. When transporting the chair base 100, the chair legs 130 can be folded to reduce volume and facilitate carrying.

[0050] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A chair base, characterized in that, include: Connector (110); A pneumatic rod (120) is disposed within the connecting seat (110); Multiple chair legs (130) are arranged circumferentially around the connecting seat (110); one end of each chair leg (130) is hinged to the connecting seat (110), and the middle part of each chair leg (130) is slidably connected to the connecting seat (110).

2. The chair base according to claim 1, characterized in that, The chair base (100) further includes a sliding sleeve (140) and a plurality of connecting rods (150). The sliding sleeve (140) is fitted onto the outer wall of the connecting seat (110) and can slide relative to the connecting seat (110). The plurality of connecting rods (150) are arranged one-to-one with the plurality of chair legs (130). One end of each connecting rod (150) is hinged to the sliding sleeve (140), and the other end of each connecting rod (150) is hinged to the middle of the corresponding chair leg (130).

3. The chair base according to claim 1, characterized in that, The chair base (100) also includes a plurality of universal feet (160), and the plurality of universal feet (160) are arranged in a one-to-one correspondence with the plurality of chair legs (130); each universal foot (160) is connected to the end of the corresponding chair leg (130) away from the connecting seat (110).

4. The chair base according to claim 3, characterized in that, For each swivel foot (160), the swivel foot (160) includes a foot plate (161), a ball joint (162) and an inner leg tube (163). The ball joint (162) is mounted on the foot plate (161), one end of the inner leg tube (163) is connected to the ball joint (162), and the other end of the inner leg tube (163) is connected to the chair leg (130).

5. The chair base according to claim 4, characterized in that, The chair base (100) also includes multiple leg adjusters (170), and the multiple leg adjusters (170) are respectively arranged in correspondence with the multiple universal feet (160); the inner leg tube (163) is a telescopic rod, and the inner leg tube (163) is movably connected to the chair legs (130) through the leg adjusters (170).

6. The chair base according to claim 1, characterized in that, The chair base (100) also includes a seat support frame (200), which is connected to the gas spring (120). The gas spring (120) can drive the seat support frame (200) to extend and retract up and down.

7. The chair base according to claim 6, characterized in that, The chair base (100) also includes an explosion-proof base (180), which is disposed between the seat cushion support frame (200) and the gas spring (120).

8. The chair base according to any one of claims 1-7, characterized in that, The chair base (100) also includes a lifting handle (190), which is connected to the gas spring (120).

9. A type of seat, characterized in that, The chair includes a seat support frame (200), a backrest support (300), and a chair base (100) as described in any one of claims 1-8. The seat support frame (200) is connected to the gas spring (120), and the gas spring (120) can drive the seat support frame (200) to rise and fall. The backrest support (300) is movably connected to the seat support frame (200).

10. The seat according to claim 9, characterized in that, The seat (1000) also includes an armrest (400) and an armrest support tube (500). One end of the armrest (400) is hinged to the backrest support (300), and the other end of the armrest (400) is hinged to the armrest support tube (500). The end of the armrest support tube (500) away from the armrest (400) is hinged to the seat cushion support frame (200).

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