Leisure folding chair capable of being folded once being carried

Abstract

A leisure folding chair capable of being folded once being lifted comprises side supports and a folding transverse frame arranged between the side supports on the two sides, the folding transverse frame comprises a left transverse rod, a right transverse rod, a left inclined supporting rod and a right inclined supporting rod, the two transverse rods are rotationally connected through a one-way rotating joint, and each inclined supporting rod is rotationally connected with the transverse rod on the corresponding side. The lower end parts are rotationally connected through a front shaft pivot joint and a rear shaft pivot joint; and a lifting handle is mounted on the one-way rotating joint. A connecting rod mechanism is formed among the transverse rod and the inclined supporting rod on each side of the folding transverse frame and the connecting base and the vertical rod on the corresponding side, a four-connecting-rod mechanism is formed among the two transverse rods and the two inclined supporting rods of the folding transverse frame, and the two transverse rods of the folding transverse frame cannot continue to rotate when being unfolded to the limit position through the one-way rotating joints. Therefore, the unfolding position of the folding transverse frame is stable, the side supports on the left side and the right side are stably unfolded, unfolding and self-locking are completed, in the unlocking and folding process, only the lifting handle needs to be lifted upwards, folding is achieved in one step, redundant actions are not needed, and operation is easier.

Description

Technical Field

[0001] This utility model belongs to the field of leisure furniture, specifically relating to a leisure folding chair that can be easily lifted and folded. Background Technology

[0002] As modern living standards continue to improve, so too does the pressure of life and work. More and more people are spending weekends outdoors with family and friends, relaxing and enjoying the sunshine and barbecues. Folding chairs add to the enjoyment of outdoor life.

[0003] Folding chairs on the market come in various folding designs. Typically, a locking mechanism is installed between the vertical rods that slide along the side supports and the connecting seats. This mechanism locks the unfolded chair in place, preventing it from folding up during use. However, locking mechanisms often fail to engage, making the chair unstable and potentially causing safety hazards, requiring re-inspection. When folding the chair, the locking mechanisms on both sides must be unlocked to fold it.

[0004] Therefore, it is essential to design a folding chair whose structure can achieve self-locking and stable unfolding, and whose folding operation is convenient and can be folded with just a lift. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a leisure folding chair that can be easily lifted and folded.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a folding leisure chair that can be easily lifted and folded, having an unfolded position and a folded position, including side supports located on the left and right sides respectively, and a folding crossbar disposed between the two side supports. Each side support includes: a connecting seat, a vertical rod disposed on the connecting seat that moves up and down, and a front support leg and a rear support leg whose upper ends are rotatably connected to the connecting seat about a left-right extending axis. It also includes a side linkage device that causes the front support leg and the rear support leg to open or close relative to each other when the vertical rod moves up or down relative to the connecting seat. Each side linkage device includes a component fixed to the vertical rod and located below the connecting seat. The frame includes a limiting seat, a front leg sleeve and a rear leg sleeve, which are respectively rotatably connected to the limiting seat around a left-right extending axis. The front leg sleeve is fitted onto the corresponding front support leg, and the rear leg sleeve is fitted onto the corresponding rear support leg. The folding crossbar includes two horizontal bars, one end of which is rotatably connected to the lower end of the corresponding side vertical bar, and two diagonal braces, one at the upper end of which is rotatably connected to the corresponding side connecting seat. The other ends of the two horizontal bars are rotatably connected to each other through a one-way rotating joint. Each diagonal brace is rotatably connected to the horizontal bar on the corresponding side, and the lower ends of the two diagonal braces are rotatably connected to each other through a front-rear pivot joint. A lifting handle is installed on the one-way rotating joint.

[0007] In some embodiments, the one-way rotating joint includes a first end sleeve and a second end sleeve, respectively fixed to the other end of the two crossbars, and a one-way limiting cover. The first end sleeve, the second end sleeve, and the one-way limiting cover are connected by a front and rear two-axis pivot, and a lifting handle is provided on the one-way limiting cover.

[0008] In some embodiments, in the unfolded position, the front and rear axes are located below the horizontal bar formed by the two horizontal bars joined together, and the first end sleeve and the second end sleeve are housed inside the two sides of the one-way limiting cover.

[0009] In some embodiments, in the unfolded position, the upper part of the limiting seat and the lower part of the connecting seat are tightly fitted together.

[0010] In some embodiments, the limiting seat includes a plastic limiting seat body sleeved and fixed on the vertical rod, and a metal reinforcing connector fixed on the plastic limiting seat body. The front leg sleeve and the rear leg sleeve are rotatably connected to the front and rear parts of the metal reinforcing connector, respectively.

[0011] In some embodiments, the upper part of the plastic limiting seat body has a limiting part that can be inserted into the inner shaped hole of the lower part of the connecting seat.

[0012] In some embodiments, a human support device is also included, which is a retractable hammock, sling, or hammock installed between the upper ends of the two vertical poles.

[0013] The scope of this utility model is not limited to technical solutions formed by specific combinations of the above-mentioned technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-mentioned technical features or their equivalent features. For example, technical solutions formed by substituting the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a leisure folding chair that can be folded with a single lift. The horizontal bar and diagonal brace of each side of the folding frame and the corresponding connecting seat and vertical bar form a linkage mechanism. The two horizontal bars and two diagonal braces of the folding frame form a four-bar linkage mechanism. By setting a one-way rotation joint between the two horizontal bars, the one-way rotation joint makes the two horizontal bars of the folding frame unable to continue rotating after being unfolded to the limit position. Thus, the position between the connecting seat and the vertical bar is stable. The side linkage device stably opens the entire side support of the corresponding side, thereby making the unfolded position of the folding frame stable, completing the unfolding self-locking, and making the unfolding reliable and stable. No additional locking mechanism is required between the connecting seat and the vertical bar of the two side supports.

[0015] Furthermore, a lifting handle is installed on the one-way rotating joint. When unlocking and folding, simply lift the lifting handle upwards. The one-way rotating joint allows the two crossbars of the folding frame to rotate freely during the folding process until they are folded to their limit position. This one-step folding process requires no extra movements and makes operation easier. Attached Figure Description

[0016] Appendix Figure 1 This is a diagram of a folding chair that can be easily lifted and folded, shown in its unfolded position.

[0017] Appendix Figure 2 This is a diagram illustrating the folding process of a casual folding chair that can be easily lifted and folded.

[0018] Appendix Figure 3 For the appendix Figure 2 Enlarged diagram of point A in the diagram;

[0019] Appendix Figure 4 This is a diagram of a folding chair that can be easily lifted and folded, shown in the folded position.

[0020] Appendix Figure 5 This is a schematic diagram of the folded crossbar in the unfolded position;

[0021] Appendix Figure 6 This is a schematic diagram of the folding crossbar during the folding process;

[0022] The components are as follows: 1. Vertical rod; 2. Front support leg; 3. Rear support leg; 4. Connecting seat; 5. Side linkage device; 51. Limiting seat; 511. Plastic limiting seat body; 511a. Limiting part; 512. Metal reinforcing connector; 52. Front leg sliding sleeve; 53. Rear leg sliding sleeve; 6. Horizontal rod; 7. Diagonal brace; 8. One-way rotating joint; 81. First end sleeve; 82. Second end sleeve; 83. One-way limiting cover; 84. Lifting handle; 9. Pivot joint. Detailed Implementation

[0023] As shown in the attached figures, a folding chair that can be easily lifted and folded has an unfolded position and a folded position, including side supports located on the left and right sides respectively, and a folding crossbar disposed between the two side supports that can be folded.

[0024] Each side support includes:

[0025] Connector 4;

[0026] The vertical rod 1, which moves up and down, is inserted into the connecting seat 4;

[0027] The upper end of the front support leg 2 is rotatably connected to the front of the connecting seat 4 around the first side axis that extends to the left and right.

[0028] The upper end of the rear support leg 3 is rotatably connected to the rear of the connecting seat 4 around the second side shaft that extends to the left and right.

[0029] It also includes a side linkage device 5. When the vertical rod 1 moves up or down relative to the connecting seat 4, the side linkage device 5 causes the front support leg 2 and the rear support leg 3 to spread out or retract in front and back relative to each other.

[0030] As attached Figure 1-3 As shown, each side linkage device 5 includes:

[0031] The limiting seat 51 is fixed on the vertical rod 1 and located below the connecting seat 4;

[0032] The front leg slide 52 is fitted onto the corresponding front support leg 2 and is rotatably connected to the front part of the limiting seat 51 around the left and right extended side third axis.

[0033] The rear leg sliding sleeve 53 is fitted onto the corresponding rear support leg 3 and is rotatably connected to the rear part of the limiting seat 51 around the left-right extending fourth side axis.

[0034] In the unfolded position, the upper part of the limiting seat 51 and the lower part of the connecting seat 4 are tightly fitted together, thereby determining the position relative to the front support 2 and the rear support 3, and further determining the opening angle of the front support 2 and the rear support 3 relative to the vertical rod 1.

[0035] Furthermore, to enhance the stability and high-strength support of the front support 2 and rear support leg 3 in the unfolded position, the limiting seat 51 is designed as follows: it includes a plastic limiting seat body 511 sleeved and fixed on the vertical rod 1, a metal reinforcing connector 512 fixed on the plastic limiting seat body 511, and front leg sliding sleeves 52 and rear leg sliding sleeves 53 made of metal or plastic, which are rotatably connected to the front and rear parts of the metal reinforcing connector 512, respectively. The metal reinforcing connector 512 ensures stable force distribution in the unfolded position, higher strength, and longer service life. The easily moldable plastic limiting seat body 511 has a limiting part 511a that protrudes upwards from front to back on the upper part. In the unfolded position, the limiting part 511a can be inserted into the inner shaping hole in the lower part of the connecting seat 4 to prevent lateral twisting and deformation in the unfolded position.

[0036] As attached Figure 1 , 2 As shown in Figures 5 and 6, the folding crossbar includes:

[0037] The two horizontal bars 6 on the left and right are connected at one end to the lower end of the corresponding side vertical bar 1, which is rotatably connected around the front and rear three axes extending forward and backward. The other ends of the two horizontal bars 6 are rotatably connected by a one-way rotating joint 8.

[0038] The upper end of each of the two diagonal braces 7 is rotatably connected to the corresponding side connecting seat 4 about the front and rear four axes extending front and back. Each diagonal brace 7 is rotatably connected to the corresponding side crossbar 6 about the front and rear five axes extending front and back. The lower ends of the two diagonal braces 7 are rotatably connected to each other through the front and rear one axis pivot joint 9.

[0039] The one-way rotating joint 8 includes a first end sleeve 81 and a second end sleeve 82, respectively fixed to the other ends of the two crossbars 6, a one-way limiting cover 83, and a handle 84 disposed on the one-way limiting cover 83. The first end sleeve 81, the second end sleeve 82, and the one-way limiting cover 83 are connected by a front and rear two-axis pivot extending front and rear. When the two crossbars of the folding frame are unfolded to their limit position, they cannot continue to rotate. At this time, the two crossbars 6 are in contact end to end, forming a straight line. The front and rear two axes are located below the straight crossbars, thus the front and rear two axes are located at the dead point position, the folding frame is unfolded stably, and the side supports on the left and right sides are stably opened. In the unfolded position, the first end sleeve 81 and the second end sleeve 82 are housed inside the one-way limiting cover 83 on both sides to prevent the left and right sides from twisting and deforming in the unfolded position, thereby making the unfolded frame stable, completing the unfolding self-locking, and making the unfolding reliable and stable. The connecting seats of the folding cross frame and the side supports on both sides, as well as the vertical rod, form a linkage mechanism. When the folding cross frame is in the unfolded position, the upper part of the limiting seat 51 on the vertical rod abuts against the lower part of the connecting seat 4, thereby stabilizing the front support 2 and the rear support 3. No additional locking mechanism is required between the connecting seats of the side supports on both sides and the vertical rod.

[0040] In this embodiment, two ends of the lifting handles 84 are installed on the front and rear axes outside the one-way limiting cover 83. When unlocking and folding, simply lifting the lifting handles 84 upwards can easily control and break through the dead point of the front and rear axes, thereby allowing the folding crossbar to fold and drive the side supports on both sides to fold synchronously to the limit position. That is, one lift of the lifting handles 84 can complete the folding in one step without any extra actions, making the operation more convenient. This folding chair has a simple structure, and its volume is more compact, small and lightweight when folded.

[0041] No illustration is provided. A human support device is installed between the upper ends of the two vertical poles 1. The human support device is a retractable hanging chair, hanging bag, or hammock, etc.

[0042] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A folding chair that can be easily lifted and folded, having an unfolded position and a folded position, comprising side supports located on the left and right sides respectively, and a folding crossbar disposed between the two side supports, wherein each side support comprises: The system includes a connecting seat (4), a vertical rod (1) that moves up and down on the connecting seat (4), a front support leg (2) and a rear support leg (3) whose upper ends are rotatably connected to the connecting seat (4) around a left-right extending axis, and a side linkage device (5) that causes the front support leg (2) and the rear support leg (3) to open or close relative to each other when the vertical rod (1) moves up or down relative to the connecting seat (4). Its features are: Each side linkage device (5) includes a limiting seat (51) fixed to the vertical rod (1) and located below the connecting seat (4), and a front leg sleeve (52) and a rear leg sleeve (53) respectively provided in front and behind, which are rotatably connected to the limiting seat (51) about the left and right extending axes. The front leg sleeve (52) is sleeved on the corresponding front support leg (2), and the rear leg sleeve (53) is sleeved on the corresponding rear support leg (3). The folding crossbar includes two horizontal bars (6) with one end rotatably connected to the lower end of the corresponding side vertical bar (1), and two diagonal braces (7) with the upper end rotatably connected to the corresponding side connecting seat (4). The other ends of the two horizontal bars (6) are rotatably connected to each other through a one-way rotating joint (8). Each diagonal brace (7) is rotatably connected to the horizontal bar (6) on the corresponding side, and the lower ends of the two diagonal braces (7) are rotatably connected to each other through a front and rear one-axis pivot joint (9). A lifting handle (84) is installed on the one-way rotating joint (8).

2. The folding chair that can be easily lifted and folded according to claim 1, characterized in that: The one-way rotating joint (8) includes a first end sleeve (81) and a second end sleeve (82) respectively fixed to the other end of the two crossbars (6), and a one-way limiting cover (83). The first end sleeve (81), the second end sleeve (82) and the one-way limiting cover (83) are connected by a front and rear two-axis pivot. The lifting handle (84) is set on the one-way limiting cover (83).

3. The folding chair that can be easily lifted and folded according to claim 2, characterized in that: In the unfolded position, the front and rear axes are located below the horizontal bar (6) formed by the two horizontal bars (6) joined together, and the first end sleeve (81) and the second end sleeve (82) are housed in the inner sides of the one-way limiting cover (83).

4. The folding chair that can be easily lifted and folded according to claim 1, characterized in that: In the unfolded position, the upper part of the limiting seat (51) and the lower part of the connecting seat (4) are tightly fitted together.

5. The folding chair that folds easily with a single lift according to claim 1, characterized in that: The limiting seat (51) includes a plastic limiting seat body (511) sleeved and fixed on the vertical rod (1) and a metal reinforcing connector (512) fixed on the plastic limiting seat body (511). The front leg slide (52) and the rear leg slide (53) are rotatably connected to the front and rear parts of the metal reinforcing connector (512), respectively.

6. The folding chair that can be easily lifted and folded according to claim 5, characterized in that: The upper part of the plastic limiting seat body (511) has a limiting part (511a) that can be inserted into the inner shaped hole of the lower part of the connecting seat (4).

7. The folding chair that can be easily lifted and folded according to any one of claims 1-6, characterized in that: It also includes a human support device installed between the upper ends of the two vertical poles (1), the human support device being a retractable hanging chair, hanging bag or hammock.

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