Folding chair

Abstract

A folding chair comprises a cushion assembly and two armrest assemblies. The cushion assembly comprises a cushion rod and a pivot assembly. The pivot assembly includes a pivot and a plug. The armrest assembly includes a first / second support assembly. The first supporting assembly comprises a first supporting rod and an adjusting plate. The adjusting plate is provided with at least two adjusting positions, and the at least two adjusting positions are arranged at intervals in the extending direction of the first supporting rod. And the connecting plug is accommodated in one of the adjusting positions. When the folding chair is used and the cushion assembly is pressed, the position relation between the adjusting position and the connecting plug is kept unchanged. The folding chair provided by the invention not only can be switched between a folding state and an unfolding state, but also can be switched between a catering chair state and a leisure chair state, so that the purpose of multiple functions can be achieved, and different requirements of people are met.

Description

Technical Field

[0001] The invention relates to the technical field of furniture equipment manufacturing, and in particular to a winding device for an induction cooker coil. Background Art

[0002] Chairs are commonly used furniture for people's lives or work, such as outdoor areas such as gardens, balconies and terraces, and indoor areas such as workshops and dining rooms. However, the structure of the chairs used in different usage environments is also different, so there are two common types of chairs: chairs used for dining positions have a relatively upright backrest and a relatively high seat, so that people can stand up and eat easily, which can stretch their abdomens. For outdoor areas, the seat is often required to be lower, which is conducive to raising the height of the calf, thereby facilitating blood circulation in the calf, making people feel comfortable, and thus achieving the purpose of leisure.

[0003] At present, with the rise of picnics and camping, more and more people are starting to carry out leisure activities and dining in the wild. Therefore, people often need to bring two sets of chairs, one for leisure and one for dining, to meet people's different needs, but this will inevitably take up a lot of space. When going out for a picnic or camping, the space is relatively small, and taking two sets of chairs will not be worth the loss. Of course, sometimes, due to space limitations, people only take one set of chairs, which often cannot meet people's different needs. Summary of the invention

[0004] In view of this, the present invention provides a folding chair, which can be switched to a beach chair for leisure, can be switched to a dining chair for dining, and can also be folded to meet the above needs.

[0005] A folding chair includes a seat cushion assembly and two armrest assemblies respectively arranged on both sides of the seat cushion assembly. The seat cushion assembly includes two seat cushion rods arranged at intervals and two pivot assemblies respectively arranged at the ends of the seat cushion rods. The pivot assembly includes a pivot and a plug connector connected to one end of the pivot. Each of the armrest assemblies includes a first support assembly and a second support assembly pivotally connected at the ends. The first support assembly includes a first support rod and an adjustment plate arranged on the first support rod. At least two adjustment positions are arranged on the adjustment plate, and at least two adjustment positions are arranged at intervals along the extension direction of the first support rod. The plug connector is accommodated in one of the adjustment positions. When the folding chair is used and the seat cushion assembly is under pressure, the positional relationship between the adjustment position and the plug connector remains unchanged. The second support assembly includes a second support rod pivotally connected to the first support rod and a clamping support assembly arranged on the second support rod. The clamping support assembly includes a clamping seat arranged on the second support rod, a support rod arranged at one end of the clamping seat, a connecting rod arranged between the free end of the support rod and the cushion rod, and an elastic head arranged at the other end of the clamping seat. The support rod is arranged below the cushion rod to withstand the pressure from the cushion rod. The connecting rod and the clamping seat are separated on both sides of the cushion rod. The elastic head clamps the cushion rod together with the support rod in the original state, and the elastic head retracts into the clamping seat when the cushion rod is separated from the clamping between the elastic head and the support rod.

[0006] Furthermore, the seat cushion assembly also includes at least two seat cushion cross arms arranged between the two seat cushion rods, and the two seat cushion cross arms are arranged at intervals.

[0007] Furthermore, the folding chair further includes at least one reinforcing cross arm disposed between the two first support rods, and at least one second reinforcing cross arm disposed between the two second support rods.

[0008] Furthermore, each of the armrest assemblies further includes an armrest rod assembly disposed at the pivotal position of the first and second support assemblies.

[0009] Furthermore, the handrail bar assembly includes a connecting rod arranged at the pivotal position of the first and second support assemblies, and a handrail bar group connected to the connecting rod, and one end of the handrail bar group is pivotally connected to the backrest bar of the backrest assembly.

[0010] Furthermore, the handrail rod group includes an outer shell and two hook members spaced apart in the outer shell, the outer shell is groove-shaped, and the two hook members are fixedly arranged on two side walls of the groove-shaped outer shell, and the hook members are used to fix the relative position between the connecting rod and the handrail rod group.

[0011] Furthermore, two cross bars are provided on the connecting rod, and the extension direction of each cross bar is parallel to the arrangement direction between the two hook members. Each hook member includes a plurality of hook grooves arranged at intervals, and the cross bar is inserted into one of the hook grooves. When the backrest assembly rotates away from the seat cushion assembly, the cross bar pulls the hook groove to prevent the backrest assembly from rotating.

[0012] Furthermore, the hook groove includes a fixing groove formed on the hook member and an introduction groove connected to the fixing groove, and the fixing groove is used for inserting the cross bar.

[0013] Furthermore, the first support assembly and the second support assembly are connected via an armrest pivot assembly, the armrest pivot assembly includes a third rotating ring arranged on the first support rod, and a fourth rotating ring arranged on the second support rod, and the connecting rod is arranged on the outside of the third rotating ring.

[0014] Furthermore, the adjustment plate is also provided with a slide groove communicating with at least two of the first support rods, and the extension direction of the slide groove is the same as the extension direction of the first support rod.

[0015] Furthermore, an annular groove is provided on the plug connector, the adjustment position is a U-shaped groove, and the U-shaped groove has a retaining wall on one side facing the seat cushion assembly, and when the plug connector is inserted into the U-shaped groove, the annular groove is coupled with the retaining wall.

[0016] Furthermore, the connecting rod and one end of the cushion rod and the first support rod are respectively located on both sides of the clamping seat, and the connecting rod is rotatably connected to the cushion rod.

[0017] Furthermore, the clamping seat includes a cavity and a cantilever arranged on the inner wall of the cavity, the elastic head is arranged at the free end of the cantilever, and the elastic head extends out of the cavity in a free state, and retracts into the cavity when the elastic head is pressed.

[0018] Furthermore, the cantilever and the support rod are respectively arranged at two ends of the clamping seat.

[0019] Furthermore, the pivot assembly also includes a first rotating ring arranged on the seat rod, and a second transfer ring arranged on the backrest rod, the pivot passes through the center of the first and second rotating rings, and the first and second rotating rods are concentrically arranged.

[0020] Furthermore, a first connecting seat fixedly connected to the cushion rod is provided on the first rotating ring, and a second connecting seat fixedly connected to the backrest rod is provided on the second rotating ring.

[0021] Furthermore, the folding chair also includes a backrest assembly pivotally connected to the seat cushion assembly, and the backrest assembly includes two backrest rods that are spaced apart and pivotally connected to the seat cushion rod through the pivot assembly.

[0022] Furthermore, the backrest assembly also includes at least two backrest cross arms arranged between the two backrest rods, and the two backrest cross arms are arranged at intervals.

[0023] Compared with the prior art, the folding chair provided by the present invention can not only switch between the folding state and the unfolding state, but also switch between the dining chair state and the leisure chair state, so as to achieve the purpose of multi-function and meet people's different needs. Specifically, a pivot assembly is respectively provided on both sides of the seat cushion assembly, and each pivot assembly is provided with a plug connector, and an adjustment plate is provided on the first support assembly of each armrest assembly, and at least two adjustment positions are provided on the adjustment plate, so that when the plug connector is inserted in different adjustment positions, it can switch between the dining chair state and the leisure chair state. At the same time, because the adjustment plate also has a slide groove connected to the adjustment position, when the plug connector slides into the bottom of the slide groove, the seat cushion assembly can be closed toward the backrest assembly, and at the same time, the first and second support assemblies will also be merged together, and the armrest rod group will also be close to the two sides of the backrest assembly, so as to fold together, and when it is necessary to unfold, it only needs to be pulled in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic structural diagram of a folding chair provided by the present invention.

[0025] Figure 2 for Figure 1 A schematic diagram of the exploded structure of a pivot assembly of a seat cushion assembly of a folding chair.

[0026] Figure 3 for Figure 1 A schematic structural diagram of an armrest assembly of a folding chair.

[0027] Figure 4 for Figure 1 A structural schematic diagram of a folding chair in a use state of a dining chair.

[0028] Figure 5 for Figure 1 A structural schematic diagram of a folding chair in a use state of a leisure chair.

[0029] Figure 6for Figure 3 A schematic diagram of the structure of an adjustment plate of an armrest assembly.

[0030] Figure 7 for Figure 3 A schematic structural diagram of a clamping seat of an armrest assembly.

[0031] Figure 8 for Figure 1 A schematic diagram of a partial exploded structure of an armrest assembly of a folding chair.

[0032] Fig. 9 for Figure 8 A schematic diagram of the partial enlarged structure of the folding chair at point A.

[0033] Fig.10 for Figure 1 A schematic structural diagram of a hook member provided in a handrail assembly. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0035] like Figures 1 to 10 As shown, it is a schematic diagram of the structure of a folding chair provided by the present invention. The folding chair includes a seat cushion assembly 10, a backrest assembly 20 pivotally connected to the seat cushion assembly 10, and an armrest assembly 30 pivotally connected to the seat cushion assembly 10 and the backrest assembly 10, respectively. It can be imagined that the folding chair also includes some other functional modules, such as a fabric mesh cover arranged on the seat cushion assembly 10 and the backrest assembly 20, assembly components such as bolts, screws, and some soft furnishings, etc., which are well known to those skilled in the art and will not be described in detail one by one here.

[0036] The cushion assembly 10 includes two cushion rods 11 arranged at intervals, at least two cushion cross arms 12 arranged between the two cushion rods 11, and two pivot assemblies 13 respectively arranged at the ends of the cushion rods 11. The cushion rods 11 can be made of metal materials, such as aluminum alloy or aluminum profiles, and their shapes and sizes are designed according to actual needs. In this embodiment, the cushion rods 11 are hollow aluminum profiles to reduce weight while ensuring strength. The cushion cross arms 12 are arranged on the cushion rods 11 at intervals, and can be connected or welded together by screws, so as to play a supporting role together with the cushion rods 11. The number of the cushion cross arms 12 can be two or more than three. The pivot assembly 13 is used to connect with the backrest assembly 20, so that the cushion assembly 10 and the backrest assembly 20 can rotate relative to each other to achieve the purpose of folding. The pivot assembly 13 has two and is respectively arranged on the two cushion rods 11, and has the same structure. Each of the pivot components 13 includes a first rotating ring 131 disposed on the cushion rod 11, a second rotating ring 132 disposed on the backrest component 20, a pivot 133 passing through the center of the first and second rotating rings 131 and 132, and a plug connector 134 connected to one end of the pivot 133. The first rotating ring 131 is provided with a first connecting seat 135 fixedly connected to the cushion rod 11, and the second rotating ring 132 is provided with a second connecting seat 136 fixedly connected to the backrest component 20. Since the first and second rotating rings 131 and 132 are annular structures, when the backrest component 20 and the cushion component 10 rotate relative to each other, they will not interfere with each other, so that the purpose of folding can be achieved. The first connecting seat 135 is plugged together with the cushion rod 11 and fixed together by screws. The second connecting seat 136 and the backrest component 20 can also be plugged together and then fixed together by screws. The pivot 133 may be a bolt, which is inserted in the center of the first and second rotating rings 131 and 132, so that the first and second rotating rings 131 and 132 can rotate around the pivot 133. The plug connector 134 is fixedly connected to one end of the pivot 133, so as to fix the relative positions of the first and second rotating rings 131 and 132 along the axial direction of the pivot 133. In this embodiment, the plug connector 134 is screwed on one end of the pivot 133. The plug connector 134 is also used to connect the armrest assembly 30, and an annular groove 137 is also provided on its radial outer side wall, which is used to be inserted and connected to the armrest assembly 30, which will be described in detail below in conjunction with the armrest assembly 30.

[0037] The backrest assembly 20 includes two backrest rods 21 that are spaced apart and pivotally connected to the cushion rod 11 through the pivot assembly 13, and at least two backrest crossbars 22 that are disposed between the two backrest rods 21. As described above, the second connecting seat 136 on the second rotating ring 132 is plugged and fixed together with the backrest rod 21. The backrest crossbars 22 should be spaced apart, and their number can be set according to actual needs, such as two or three or more. Of course, it is conceivable that a fabric mesh cover can also be set on the backrest assembly 20 to improve comfort.

[0038] The armrest assembly 30 should generally have two and be symmetrically arranged on both sides of the cushion assembly 10. Each armrest assembly 30 includes a first support assembly 31 and a second support assembly 32 pivotally connected at the ends, an armrest pivot assembly 33 for pivotally connecting the first and second support assemblies 31 and 32, and an armrest rod assembly 34 connected to the armrest pivot assembly 33. One end of the first support assembly 31 is pivotally connected to the second support assembly 32, and the middle part is connected to the pivot assembly 13, thereby fixing the relative position of the first support assembly 31. The middle part of the second support assembly 32 is connected to the middle part of the cushion rod 11 of the cushion assembly 10, so that the first and second support assemblies 31 and 32 are in an inverted V shape, which serves the purpose of support.

[0039] The first support assembly 31 includes a first support rod 311 and an adjustment plate 312 arranged on the first support rod 311. The first support rod 311 can also be made of aluminum alloy or aluminum profile, which mainly plays a supporting role. The adjustment plate 312 is provided with at least two adjustment positions 313 and a slide groove 314 connecting the adjustment position 313. The adjustment position 313 is used to insert the plug connector, so it has a U-shaped structure, that is, the adjustment position 313 is a U-shaped groove, and the opening of the U-shaped groove faces the slide groove 314, and the opening direction of the U-shaped groove is an acute angle with the force direction of the cushion assembly 10. In this embodiment, there are two adjustment positions 313, and at least two of the adjustment positions 313 are arranged at intervals along the extension direction of the first support rod 311. In order to ensure the relative position of the plug connector 134 after being inserted into the adjustment position 313, the U-shaped groove of the adjustment position 313 has a retaining wall 315 on the side facing the seat cushion assembly 10. When the plug connector 134 is inserted into the U-shaped groove, the annular groove 137 of the plug connector 134 is coupled with the retaining wall 315 to prevent the plug connector 134 from sliding out in a non-subjective state. When the plug connector 134 is inserted into the adjustment position 313 located on the side close to the handrail assembly 34, the folding chair can be used as a dining chair, because at this time the seat cushion assembly 10 is higher from the ground, which helps to stretch the abdomen, such as Figure 4As shown, the angle between the backrest assembly 10 and the seat cushion assembly 20 is between 90 and 110 degrees. When the plug connector 134 is inserted into the adjustment position 313 located on the side away from the handrail assembly 34, the folding chair can be used as a beach chair, because the side of the seat cushion assembly 10 away from the backrest assembly 20 is closer to the ground, which is conducive to raising the calf part and achieving the purpose of leisure. Figure 5 As shown, the angle between the backrest assembly 10 and the cushion assembly 20 is between 110 and 150 degrees. In addition, as described below, the angle adjustment between the backrest assembly 20 and the cushion assembly 10 can be adjusted by the armrest bar assembly 34, which will be described in detail below.

[0040] During operation, the seat cushion assembly 10 is first lifted upward to separate the annular groove 317 from the retaining wall 315, and then the plug connector 314 is slid into the slide groove 314, and then moves along the slide groove 314, and then slides into the opening of the U-shaped groove of another adjustment position 313, so as to complete the switch between the two use states. When the plug connector 314 slides into the bottom of the slide groove 314, the folding chair is in the folded state.

[0041] Therefore, in order to achieve the folding of the folding chair, the adjusting plate 312 should be extended to the end of the first supporting rod 311 , so that the sliding groove 314 can also be extended to the end of the first supporting rod 311 .

[0042] The second support assembly 32 includes a second support rod 321 pivotally connected to the first support rod 311, and a clamping support assembly 322 disposed on the second support rod. The second support rod 321 and the first support rod 311 are in an inverted V shape, and its structure is the same as that of the first support rod 311, which will not be described in detail here. The clamping support assembly 322 includes a clamping seat 323 disposed on the second support rod 321, a support rod 324 disposed at one end of the clamping seat 323, a connecting rod 325 disposed between the free end of the support rod 324 and the cushion rod 11, and an elastic head 326 disposed at the other end of the clamping seat 323.

[0043] The clamping seat 323 is fixedly arranged on the second support rod 321, and the fixing method thereof can be fixed by fasteners. The clamping seat 323 includes a cavity 327, and a cantilever 328 arranged on the inner side wall of the cavity 327. The elastic head 326 is arranged at the free end of the cantilever 328, and the elastic head 326 extends out of the cavity 327 in a free state, and the elastic head 326 retracts into the cavity 327 when the elastic head 326 is pressed. Therefore, the cavity 327 is used to accommodate the retracted cantilever 328, and the cantilever 328 is used to provide elasticity for the elastic head 326. Of course, it is conceivable that elasticity can also be provided to the elastic head 326 in other ways, such as a spring.

[0044] The support rod 324 is arranged at the other end of the clamping seat 323 relative to the cantilever 328, and one end thereof is fixed on the clamping seat 323. The support rod 324 is used to support the cushion rod 11 of the cushion assembly 10. At the same time, in order to clamp the cushion rod 11, the elastic head 326 and the support rod 324 are respectively arranged on both sides of the cushion rod 11. One end of the cushion rod 11 is arranged on the first support rod 311 through the pivot 133, and the middle part of the cushion rod 11 is mounted on the support rod 324, so that the cushion assembly 10 has the function of providing the chair withstanding downward pressure. In order to enable the cushion assembly 10 to rotate and fold with the second support assembly 32 and fix the relative position between the cushion rod 11 and the support rod 324, a connecting rod 325 is arranged between the free end of the support rod 324 and the cushion rod 11.

[0045] Both ends of the connecting rod 325 are rotatably connected to the support rod 324 and the cushion rod 11 , so that the cushion rod 11 can rotate around the support rod 243 .

[0046] The elastic head 326 is fixed on the cantilever 328, and is used to clamp the cushion rod 11 together with the support rod 324 to prevent the cushion assembly 10 from flipping toward the backrest assembly 20 in an unintentional situation. The axial length of the elastic head 236 should be suitable to be accommodated in the cavity 327.

[0047] When the folding chair needs to be folded, the elastic head 326 is pressed with both hands and the seat cushion assembly 10 is lifted to disengage it from the clamping position of the seat cushion rod 11, and the seat cushion assembly 10 is pushed to disengage the plug connector 134 from the adjustment position 313 and enter the slide groove 314, and the seat cushion assembly 10 is pressed continuously to make the plug connector 134 reach the bottom of the slide groove 314. During this process, the first and second support assemblies 31 and 32 are also closed together, and the backrest assembly 20 and the seat cushion assembly 10 are also brought together, so as to achieve the purpose of folding. If it is to be unfolded, it only needs to be pulled apart in the opposite order, which will not be described in detail here.

[0048] The armrest pivot assembly 33 includes a third rotating ring 331 disposed on the first support rod 311, and a fourth rotating ring 332 disposed on the second support rod. The third rotating ring 331 and the fourth rotating ring 332 have the same structure as the first and second rotating rings 131 and 132, respectively, and are not described again.

[0049] The handrail assembly 34 includes a connecting rod 341 disposed at the pivotal position of the first and second support assemblies 31 and 32, two cross bars 342 disposed at the ends of the connecting rod 341, and a handrail assembly 343 connected to the connecting rod 341. The connecting rod 341 is disposed at the outer side of the third rotating ring 331 and extends toward the handrail assembly 343. The two cross bars 342 extend in opposite directions, and the extending direction is perpendicular to the extending direction of the connecting rod 341.

[0050] The armrest bar group 343 includes a shell 344 and two hook members 345 arranged in the shell 344 at intervals. The shell 344 is a groove-shaped and is used to accommodate the two hook members 345. One end of the shell 344 is pivotally connected to the backrest rod 21 of the backrest assembly 20, so that when the folding chair is folded, the armrest bar group 343 can be turned over and put together on both sides of the backrest assembly 20. The two hook members 345 are fixedly arranged on the two side walls of the groove-shaped shell 344. The hook member 345 is used to fix the relative position between the connecting rod 341 and the armrest bar group 343, so as to adjust the angle between the backrest assembly 20 and the cushion assembly 10 to a more comfortable angle for the user. In order to enable the connecting rod 341 to pull the hook member 345, the extension direction of each cross bar 334 is parallel to the arrangement direction between the two hook members 345. Each hook member 345 includes a plurality of hook grooves 346 arranged at intervals, and the cross bar 342 is inserted into one of the hook grooves 346. When the backrest assembly 20 rotates away from the cushion assembly 10, the cross bar 342 pulls the hook groove 346 to prevent the backrest assembly 10 from rotating. At the same time, by inserting the cross bar 342 into different hook grooves 346, the angle between the backrest assembly 20 and the cushion assembly 10 can be adjusted. The hook groove 346 includes a fixing groove 347 opened on the hook member 345, and an introduction groove 348 connected to the fixing groove 347. The fixing groove 347 is used to insert the cross bar 342. The introduction slot 348 is located between the fixing slot 348 and the backrest assembly 20. The cross bar 342 can be introduced into the fixing slot 347 from the introduction slot 348, and can also slide out of the fixing slot 347 from the introduction slot 348, so that the cross bar 342 can be switched between different fixing slots 347, thereby achieving the purpose of adjusting the angle between the backrest assembly 20 and the seat cushion assembly 10.

[0051] Compared with the prior art, the folding chair provided by the present invention can not only switch between the folded state and the unfolded state, but also switch between the dining chair state and the leisure chair state, so as to achieve the purpose of multi-function and meet people's different needs. Specifically, a pivot assembly 13 is respectively provided on both sides of the cushion assembly 10, and each pivot assembly 13 is provided with a plug connector 134, and each first support assembly 31 of the armrest assembly 30 is provided with an adjustment plate 312, and the adjustment plate 312 is provided with at least two adjustment positions 313, so that when the plug connector 134 is inserted in different adjustment positions 313, it can switch between the dining chair state and the leisure chair state. At the same time, because the adjustment plate 312 also has a slide groove 314 connected to the adjustment position 313, when the plug connector 134 slides into the bottom of the slide groove 314, the seat cushion assembly 10 can be closed toward the backrest assembly 20, and the first and second support assemblies 31 and 32 will also be merged together, and the armrest rod group 34 will also be close to both sides of the backrest assembly 20, so as to fold together, and when it needs to be unfolded, it only needs to be pulled in the opposite direction.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A folding chair, characterized in that: The folding chair includes a seat cushion assembly and two armrest assemblies respectively arranged on both sides of the seat cushion assembly, the seat cushion assembly includes two seat cushion rods arranged at intervals, and two pivot assemblies respectively arranged at the ends of the seat cushion rods, the pivot assembly includes a pivot and a plug connector connected to one end of the pivot, each of the armrest assemblies includes a first support assembly and a second support assembly pivotally connected at the ends, the first support assembly includes a first support rod and an adjustment plate arranged on the first support rod, at least two adjustment positions are arranged on the adjustment plate, at least two adjustment positions are arranged at intervals along the extension direction of the first support rod, the plug connector is accommodated in one of the adjustment positions, and when the folding chair is used and the seat cushion assembly is under pressure, the adjustment position and the second support assembly are connected The positional relationship of the plug joint remains unchanged, the second support assembly includes a second support rod pivotally connected to the first support rod, and a clamping support assembly arranged on the second support rod, the clamping support assembly includes a clamping seat arranged on the second support rod, a support rod arranged at one end of the clamping seat, a connecting rod arranged between the free end of the support rod and the cushion rod, and an elastic head arranged at the other end of the clamping seat, the support rod is arranged below the cushion rod to withstand the pressure from the cushion rod, the connecting rod and the clamping seat are separated on both sides of the cushion rod, the elastic head clamps the cushion rod together with the support rod in the original state, and the elastic head retracts into the clamping seat when the cushion rod is disengaged from the clamping between the elastic head and the support rod.

2. The folding chair according to claim 1, characterized in that: Each of the armrest assemblies further comprises an armrest rod assembly disposed at the pivotal position of the first and second support assemblies.

3. The folding chair according to claim 2, characterized in that: The handrail bar assembly includes a connecting rod arranged at the pivotal position of the first and second support assemblies, and a handrail bar group connected to the connecting rod, and one end of the handrail bar group is pivotally connected to the backrest bar of the backrest assembly.

4. The folding chair according to claim 3, characterized in that: The handrail rod assembly includes a shell and two hook members spaced apart in the shell. The shell is groove-shaped. The two hook members are fixedly arranged on two side walls of the groove-shaped shell. The hook members are used to fix the relative position between the connecting rod and the handrail rod assembly.

5. The folding chair according to claim 4, characterized in that: Two cross bars are arranged on the connecting rod, and the extension direction of each cross bar is parallel to the arrangement direction between the two hook members. Each hook member includes a plurality of hook grooves arranged at intervals. The cross bar is inserted into one of the hook grooves. When the backrest assembly rotates away from the seat cushion assembly, the cross bar pulls the hook groove to prevent the backrest assembly from rotating.

6. The folding chair according to claim 5, characterized in that: The hook groove comprises a fixing groove formed on the hook member and an introduction groove connected to the fixing groove, and the fixing groove is used for inserting the cross bar.

7. The folding chair according to claim 6, characterized in that: The first support assembly and the second support assembly are connected via an armrest pivot assembly, and the armrest pivot assembly includes a third rotating ring arranged on the first support rod, and a fourth rotating ring arranged on the second support rod, and the connecting rod is arranged on the outside of the third rotating ring.

8. The folding chair according to claim 1, characterized in that: The adjustment plate is also provided with a slide groove communicating with at least two of the first support rods, and the extension direction of the slide groove is the same as the extension direction of the first support rod.

9. The folding chair according to claim 1, characterized in that: The plug connector is provided with an annular groove, the adjustment position is a U-shaped groove, and the U-shaped groove has a retaining wall on one side facing the seat cushion assembly. When the plug connector is inserted into the U-shaped groove, the annular groove is coupled with the retaining wall.

10. The folding chair according to claim 1, characterized in that: The clamping seat includes a cavity and a cantilever arranged on the inner wall of the cavity. The elastic head is arranged at the free end of the cantilever. In a free state, the elastic head extends out of the cavity. When the elastic head is pressed, the elastic head retracts into the cavity. The cantilever and the support rod are respectively arranged at both ends of the clamping seat.

11. The folding chair according to claim 1, characterized in that: The pivot assembly also includes a first rotating ring arranged on the seat rod, and a second rotating ring arranged on the backrest rod. The pivot passes through the centers of the first and second rotating rings. The first and second rotating rods are concentrically arranged. The first rotating ring is provided with a first connecting seat fixedly connected to the seat rod, and the second rotating ring is provided with a second connecting seat fixedly connected to the backrest rod.

12. The folding chair according to claim 1, characterized in that: The folding chair also includes a backrest assembly pivotally connected to the seat cushion assembly, the backrest assembly includes two backrest rods arranged at intervals and pivotally connected to the seat cushion rods through the pivot assemblies respectively, and the backrest assembly also includes at least two backrest cross arms arranged between the two backrest rods, and the two backrest cross arms are arranged at intervals.

Images