Multi-posture front wheel set and chair with same

Abstract

The invention relates to the technical field of leisure chairs, and discloses a multi-posture front wheel set which comprises two front supporting legs of a chair, the bottom ends of the two front supporting legs are rotationally connected with L-shaped connecting pieces, and the other ends of the two L-shaped connecting pieces are fixedly connected with the two ends of a U-shaped frame respectively; a front wheel is mounted at the bottom of the U-shaped frame; the U-shaped frame can rotate through the L-shaped connecting piece to adjust the included angle between the U-shaped frame and the front supporting leg, and then the posture of the U-shaped frame is controlled. According to the multi-posture front wheel set, the front wheels are installed on the U-shaped frame capable of turning over relative to the front supporting legs, so that the front wheel assembly can achieve the functions of rolling supporting, wheel-free supporting and folding storage in different postures, the moving convenience, the using stability and the space adaptability are considered on the same leisure chair, and the practicability of the leisure chair is improved; and the functions are richer.

Description

Technical Field

[0001] This invention relates to the field of lounge chair technology, specifically to a multi-posture front wheel assembly and a chair having the same. Background Technology

[0002] Lounge chairs are used for users to sit and rest. With the diversification of usage scenarios, people's requirements for the comfort, stability and spatial adaptability of lounge chairs are constantly increasing. In particular, when it is necessary to take into account both mobility and stability, higher requirements are placed on the chair's wheel assembly.

[0003] Existing movable lounge chairs generally have casters at the bottom of the legs to facilitate overall movement. While this type of structure offers some convenience during movement, it also has significant shortcomings in actual use: the casters are prone to rolling when the user sits down, stands up, or leans forward, causing the chair to shift, resulting in poor stability and potential safety hazards. To prevent the rollers from rolling, an additional braking mechanism is usually installed, but this results in a complex structure, inconvenient operation, and the possibility of slippage even when not locked. Summary of the Invention

[0004] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a multi-posture front wheel assembly and a chair incorporating it, which has the advantages of simultaneously meeting the needs for mobility, stable support, and storage.

[0005] To achieve the above objectives of simultaneously satisfying the needs for mobility, stable support, and storage, the present invention provides the following technical solution: a multi-posture front wheel assembly, including two front legs of the chair, with an L-shaped connector rotatably connected to the bottom end of each of the two front legs, and the other ends of the two L-shaped connectors respectively fixedly connected to the two ends of a U-shaped frame. The bottom of the U-shaped frame is equipped with front wheels; The U-shaped frame can be rotated via an L-shaped connector to adjust the angle between it and the front outrigger, thereby controlling the posture of the U-shaped frame.

[0006] Furthermore, a foot pedal is also fixedly installed inside the U-shaped opening of the U-shaped frame.

[0007] Furthermore, the front wheel is rotatably mounted on the bottom of the U-shaped frame.

[0008] Furthermore, the L-shaped connector includes two L-shaped connecting plates arranged opposite each other. The ends of the short sides of the two L-shaped connecting plates are rotatably mounted on the bottom end of the front support leg via a rotating shaft, and the long sides are fixed to the end of the U-shaped frame.

[0009] Furthermore, the long sides of the two L-shaped connecting plates are fixed to the ends of the U-shaped frame by two fixing pins.

[0010] Furthermore, it also includes a locking rod, one end of which is rotatably mounted on the front outrigger via a pin, and the other end has a first locking groove and a second locking groove on both sides respectively. The L-shaped connector has protrusions forming locking posts for engaging with the first or second slot.

[0011] Furthermore, when the U-shaped frame extends forward to bring the front wheels into contact with the ground, the locking post engages with the first locking slot; When the U-shaped frame is retracted to fit against the ground, the locking post engages with the second locking slot.

[0012] Furthermore, the rotational connection between the L-shaped connector and the front outrigger is damped.

[0013] Compared with the prior art, the present invention provides a multi-posture front wheel assembly, which has the following beneficial effects: 1. This multi-position front wheel assembly, by mounting the front wheels on a U-shaped frame that can flip relative to the front support legs, enables the front wheel assembly to achieve rolling support, wheelless support, and folding storage functions in different postures. Thus, it balances mobility, stability, and space adaptability on the same lounge chair, improving the practicality of the lounge chair and making its functions more abundant.

[0014] 2. This multi-position front wheel assembly, locked by a lever, ensures the stability of the U-shaped frame in both front wheel-on-the-ground and ground-supported positions, preventing accidental rotation of the U-shaped frame during use and improving the safety and reliability of the lounge chair. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first usage state of the present invention; Figure 2 This is a schematic diagram of the second usage state of the present invention; Figure 3 This is a schematic diagram illustrating the third usage state of the present invention; Figure 4 This is an enlarged schematic diagram of the U-shaped frame portion of the present invention; Figure 5 This is a front view of the U-shaped frame portion of the present invention; Figure 6 This is an enlarged schematic diagram of the lever portion of the present invention.

[0016] In the diagram: 1. Seat frame; 2. Canvas seat cushion; 3. Hinge; 4. Backrest; 5. Rear support leg; 6. Rear wheel; 7. Front support leg; 8. Armrest; 9. L-shaped connecting plate; 10. U-shaped frame; 11. Front wheel; 12. Foot pedal; 13. Locking rod; 14. Pin; 15. First locking slot; 16. Second locking slot; 17. Locking post. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0018] Please see Figures 1-6 This invention discloses a multi-posture front wheel assembly, which is installed on the two front support legs 7 of a chair, such as... Figure 1 As shown, the bottom ends of the two front outriggers 7 are rotatably connected to L-shaped connectors, and the other ends of the two L-shaped connectors are fixedly connected to the two ends of the U-shaped frame 10 respectively. The front wheel 11 is rotatably installed at the bottom of the U-shaped frame 10, thereby providing movement and steering functions. In this embodiment, the U-shaped frame 10 can be rotated via the L-shaped connector to adjust the angle between it and the front support leg 7, thereby controlling the attitude of the U-shaped frame 10. Specifically: like Figure 1 As shown, when the U-shaped frame 10 unfolds forward, so that the front wheel 11 contacts the ground and serves as the front support, the front wheel 11 participates in bearing the weight. At this time, the multi-posture front wheel assembly is in a moving state, which makes it easy to move the chair while sitting on it or to be pushed by someone. like Figure 2 As shown, when the U-shaped frame 10 rotates backward and the bottom of the U-shaped frame 10 contacts the ground, the front wheel 11 is lifted off the ground. The U-shaped frame 10, as the front support structure, contacts the ground, thereby providing stable support for the chair and preventing the front wheel 11 from rolling and affecting the stability of the chair. like Figure 3 As shown, when the U-shaped frame 10 continues to rotate upward, causing the U-shaped frame 10 and the front wheel 11 to flip upward as a whole and basically coincide with the direction of the front support leg 7, the multi-posture front wheel assembly is in a folded state. At this time, neither the front wheel 11 nor the U-shaped frame 10 touches the ground, which can reduce the space occupied at the front of the chair, making it easier to pull the chair to move, place it against the wall, or store it.

[0019] Therefore, in this invention, by mounting the front wheel 11 on the U-shaped frame 10 that can flip relative to the front support leg 7, the front wheel 11 assembly can realize the functions of rolling support, wheelless support, and folding storage in different postures. Thus, the same lounge chair takes into account the convenience of movement, the stability of use, and the adaptability of space, improving the practicality of the lounge chair and making its functions more abundant.

[0020] like Figure 4As shown, a footrest 12 is also fixedly installed inside the U-shaped opening of the U-shaped frame 10, which is used to allow the user to place their feet when the chair is in a moving state, so as to improve the comfort of sitting posture.

[0021] In this embodiment, the L-shaped connector specifically includes two L-shaped connecting plates 9 arranged opposite to each other. The ends of the short sides of the two L-shaped connecting plates 9 are rotatably mounted on the bottom of the front support leg 7 via a rotating shaft, and the long sides of the two L-shaped connecting plates 9 are fixed to the ends of the U-shaped frame 10 by two fixing pins, thereby realizing a reliable connection between the U-shaped frame 10 and the front support leg 7, ensuring structural strength and stability.

[0022] To ensure the positional stability of the U-shaped frame 10 in various postures, in this embodiment, a locking rod 13 is also provided. One end of the rod is rotatably mounted on the front support leg 7 via a pin 14, and the other end has a first locking groove 15 and a second locking groove 16 on both sides. On the L-shaped connector, a locking post 17 is protruding to be inserted into the first locking groove 15 or the second locking groove 16. The locking post 17 can be formed by extending a fixing pin. like Figure 1 As shown, when the U-shaped frame 10 unfolds forward so that the front wheel 11 contacts the ground, the locking rod 13 can be rotated and the locking post 17 can be engaged into the first locking groove 15, thereby hooking and locking the position of the U-shaped frame 10. like Figure 2 As shown, when the U-shaped frame 10 is retracted to fit against the ground, the locking rod 13 can be rotated to engage the locking post 17 into the second locking slot 16, thereby hooking and locking the position of the U-shaped frame 10.

[0023] Preferably, the rotational connection between the L-shaped connector and the front support leg 7 is damped, so that after the U-shaped frame 10 rotates upward and coincides with the front support leg 7, it can remain stable without additional fixing because it is not under force; the damping can be achieved by rubber sleeves / pads. Example

[0024] Please see Figures 1-3 Based on Embodiment 1, this embodiment discloses a chair in which the two front legs 7 are each equipped with the multi-posture front wheel assembly as described in Embodiment 1. The chair may include a seat frame and other structures; for details, please refer to [link / reference]. Figure 1 The seat frame 1 is equipped with a canvas cushion 2, and two front support legs 7 are fixed on both sides in front of the seat frame 1. The two sides behind the seat frame 1 are fixedly connected to the rear support legs 5. The bottom of the rear support legs 5 is also equipped with rear wheels 6 to cooperate with the front wheels 11 to realize the overall movement of the chair. Armrests 8 are fixedly installed at the top of the front support leg 7 and the rear support leg 5 on the same side, for placing arms and hands, improving the comfort of sitting posture and the stability of the overall structure. In addition, a backrest 4 is rotatably mounted on the seat frame 1 via a hinge 3 for the body to lean on. The specific rotation structure and rotation method of the backrest 4 can be directly referred to the prior art and adopt the conventional structure in the prior art. In this embodiment, no specific limitation is made.

[0025] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Multi-attitude front wheel set, comprising two front legs (7) of a chair, characterized in that: The bottom end of each of the two front legs (7) is rotatably connected with an L-shaped connecting piece, and the other end of each of the two L-shaped connecting pieces is fixedly connected with the two end heads of the U-shaped frame (10); The bottom of the U-shaped frame (10) is provided with a front wheel (11); The U-shaped frame (10) can be rotated through the L-shaped connecting piece to adjust the included angle between the U-shaped frame (10) and the front legs (7), thereby controlling the posture of the U-shaped frame (10).

2. The multi-posture front wheel set according to claim 1, characterized in that: The U-shaped opening of the U-shaped frame (10) is also fixedly provided with a foot pedal rod (12).

3. The multi-posture front wheel set according to claim 1, characterized in that: The front wheel (11) is rotatably installed at the bottom of the U-shaped frame (10).

4. The multi-posture front wheel set according to claim 1, characterized in that: The L-shaped connecting piece comprises two oppositely arranged L-shaped connecting plates (9), the ends of the short sides of the two L-shaped connecting plates (9) are rotatably installed on the bottom end of the front leg (7) through a rotating shaft, and the long sides are fixed on the end heads of the U-shaped frame (10).

5. The multi-posture front wheel set according to claim 4, characterized in that: The long sides of the two L-shaped connecting plates (9) are fixed on the end heads of the U-shaped frame (10) through two fixing pins.

6. The multi-posture front wheel set according to claim 1 or 4 or 5, characterized in that: It also comprises a clamping rod (13), one end of which is rotatably installed on the front leg (7) through a pin shaft (14), and the other end is provided with a first clamping groove (15) and a second clamping groove (16) on the two sides thereof; The L-shaped connecting piece is provided with a clamping column (17) for clamping into the first clamping groove (15) or the second clamping groove (16).

7. The multi-posture front wheel set according to claim 6, characterized in that: When the U-shaped frame (10) is unfolded forward so that the front wheel (11) contacts the ground, the clamping column (17) is clamped into the first clamping groove (15); When the U-shaped frame (10) is retracted backward to be in contact with the ground, the clamping column (17) is clamped into the second clamping groove (16).

8. The multi-posture front wheel set according to claim 7, characterized in that: The rotatable connection between the L-shaped connecting piece and the front leg (7) has damping.

9. A chair, characterized in that The two front legs (7) are provided with the multi-posture front wheel set according to any one of claims 1-8.

Images