Folding portable chair structure

Abstract

The utility model discloses a folding portable chair structure, and aims to overcome the defects that the existing folding chair is poor in stability and inconvenient to store and fold. The device comprises a rear supporting seat and two front supporting seats, a side fixing rod and a side supporting rod are respectively connected between the rear supporting seat and the two front supporting seats, and a front supporting rod is connected between the two front supporting seats; two ends of the side fixing rod are fixedly connected with the front supporting seat and the rear supporting seat respectively; the front ends of the side supporting rods are fixedly connected with the front supporting base, and the rear ends of the side supporting rods are rotationally connected with the rear supporting base. One end of the front supporting rod is rotationally connected with one front supporting seat, and the other end of the front supporting rod is detachably connected with the other front supporting seat. The portable folding chair is good in structural stability and convenient to store and fold.

Description

Technical Field

[0001] This utility model relates to a folding chair, and more specifically, to a folding lightweight chair structure. Background Technology

[0002] Folding chairs are popular due to their small folding and storage space and portability. However, many types of folding chairs suffer from poor stability and seating comfort. For example, Chinese Patent Publication No. CN102525162B discloses a portable chair where the left support tubes are inserted into the left hub, and the right support tubes are inserted into the right hub, connected by a single connecting rod. This design results in poor overall stability. Furthermore, when a person sits on the chair fabric, the middle and sides of the fabric tend to fold inwards, creating a feeling of restriction and affecting comfort. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a folding lightweight chair structure that has good stability and is easy to store and fold.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a folding lightweight chair structure, including a rear support seat and two front support seats, with a side fixing rod and a side support rod respectively connecting the rear support seat and the two front support seats, and a front support rod connecting the two front support seats; the two ends of the side fixing rod are fixedly connected to the front support seat and the rear support seat respectively; the front end of the side support rod is fixedly connected to the front support seat, and the rear end of the side support rod is rotatably connected to the rear support seat; one end of the front support rod is rotatably connected to one front support seat, and the other end of the front support rod is detachably connected to another front support seat.

[0005] When the folding portable chair is unfolded, both ends of the side fixing rod are fixedly connected between the rear support seat and one front support seat. The side support rod connects between the rear support seat and another front support seat, and the front support rod connects between the two front support seats, thus forming a triangular structure. The triangle provides good stability, ensuring the stability of the entire folding chair during use. For storage, one end of the front support rod is detached from the front support seat, and then the front and side support rods are rotated to bring them closer to the side fixing rod, ultimately folding into a long strip for easy storage. The folding portable chair of this patent application has good structural stability and is convenient to fold and store.

[0006] Preferably, the rear support is provided with a mounting groove, and the rear end of the side support rod is rotatably installed in the mounting groove.

[0007] The mounting slot on the rear support provides space for the connection and rotation of the side support rod.

[0008] Preferably, two support feet are installed on the rear support base, and support feet are installed on both front support bases.

[0009] The stability of the entire folding lightweight chair is ensured by the support of four support legs.

[0010] Preferably, two backrest rods are installed on the rear support, and support rods are installed on both front support. The backrest rods are provided with a bend, which is formed in the middle of the backrest rod.

[0011] The seat fabric is equipped with a front cover corresponding to the support rod and a rear cover corresponding to the backrest rod. The front cover is inserted into the support rod, and the rear cover is inserted into the backrest rod, ensuring a reliable connection of the seat fabric.

[0012] Preferably, a spring clip is installed at the other end of the front support rod, and a spring pin is provided on the spring clip. A slot is provided on the other front support seat, and a locking hole is provided on the side wall of the slot. The other end of the front support rod is installed in the slot, and the spring pin is inserted into the locking hole.

[0013] The front support rod and the front support base are detachably connected via a spring-loaded pin and a locking hole. The spring-loaded pin provides elasticity, allowing it to lock into place. To disassemble, pressing the spring-loaded pin retracts it inwards and disengages it from the locking hole, allowing the front support rod to be pulled out of its slot. The front support rod is easy to assemble and disassemble.

[0014] Preferably, the snap fastener is provided with a pressing post, and the front support rod is provided with a mounting hole, through which the pressing post passes and protrudes outward.

[0015] The push-button design facilitates pressing the spring clip. Furthermore, the push-button passing through the mounting hole allows for positioning of the spring clip, preventing it from detaching from the front support rod and ensuring reliable connection.

[0016] Preferably, the outer end of the pressing column is connected to the pressing plate.

[0017] The pressure plate is connected to the outer end of the pressure column, which facilitates the pressing operation of the pressure column and prevents the pressure column from getting stuck in the front support rod and unable to spring back due to excessive pressing during the pressing process.

[0018] Preferably, the end of the slot sidewall with the locking hole is inclined to form a guide surface, and the spring pin is pushed inward against the guide surface.

[0019] During the unfolding process of the folding lightweight chair, the end of the front support rod is inserted into the slot, and the spring pin is pushed inward against the inclined guide surface, thus sliding into the locking hole. Under the action of the spring buckle, the spring pin pops out and connects with the locking hole. With this structural design, the connection between the spring pin and the locking hole can be achieved without manually pressing the spring buckle, making it more convenient.

[0020] Preferably, a guide groove is provided on the side wall of the slot where the locking hole is provided, and the outer end of the spring pin is inserted into the guide groove, and the spring pin slides along the guide groove into the locking hole.

[0021] The guide groove positions and guides the spring pin, ensuring that the spring pin can be accurately inserted into the locking hole.

[0022] Compared with the prior art, the beneficial effects of this utility model are: (1) The folding lightweight chair of this patent application has good structural stability and is easy to store and fold; (2) The front support rod and the front support seat are connected by the insertion of the spring pin and the locking hole to achieve a detachable connection, which is convenient for disassembly and assembly; (3) During the process of inserting the end of the front support rod into the slot, the spring pin and the locking hole can be connected without manually pressing the spring buckle, which is more convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a diagram showing the connection between the front support rod and the front support seat in Embodiment 1 of this utility model.

[0025] Figure 3 This is an exploded view of the connection between the front support rod and the front support seat in Embodiment 1 of this utility model.

[0026] Figure 4 This is a folding diagram of the present invention.

[0027] Figure 5 This is a diagram showing the connection between the front support rod and the front support seat in Embodiment 2 of this utility model.

[0028] Figure 6 This is an exploded view of the connection between the front support rod and the front support seat in Embodiment 2 of this utility model.

[0029] Figure 7 This is an exploded view of the connection between the front support rod and the front support seat in Embodiment 3 of this utility model.

[0030] Figure 8 This is an exploded view of the connection between the front support rod and the front support seat in Embodiment 4 of this utility model.

[0031] In the diagram: 1. Rear support seat, 2. Front support seat, 3. Support foot, 4. Support foot sleeve, 5. Side fixing rod, 6. Side support rod, 7. Front support rod, 8. Front fixing sleeve, 9. Rear fixing sleeve, 10. Mounting groove, 11. Spring buckle, 12. Spring pin, 13. Elastic part, 14. Through hole, 15. Slot, 16. Locking hole, 17. Pressing post, 18. Mounting hole, 19. Pressing plate, 20. Backrest rod, 21. Support rod, 22. Front support sleeve, 23. Rear support sleeve, 24. Upper section rod, 25. Middle section rod, 26. Lower section rod, 27. Front tube plug, 28. Rear tube plug, 29. Guide surface, 30. Guide groove. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0033] Example 1: A folding lightweight chair structure (see Figures 1 to 4 The folding chair includes a rear support base 1 and two front support bases 2. Two support legs 3 are mounted on the rear support base 1, and each of the two front support bases 2 also has a support leg 3. The support legs 3 have a tubular structure and slope outwards from top to bottom. The four support legs 3 provide stable and reliable support for the entire chair. Both the rear support base 1 and the front support base 2 are equipped with leg sleeves 4, into which the upper end of the support leg 3 can be detachably inserted. An elastic cord connects the leg sleeve 4 and the support leg 3. After the support leg 3 is removed, the elastic cord connects the support leg 3 and the leg sleeve 4, preventing the support leg 3 from being lost and facilitating its storage.

[0034] The rear support 1 and the two front support 2 are connected by side fixing rods 5 and side support rods 6 respectively, and the two front support 2 are connected by front support rods 7; the side fixing rods 5, side support rods 6, and front support rods 7 are all tubular structures. The two ends of the side fixing rods 5 are fixedly connected to the front support 2 and the rear support 1 respectively; a front fixing sleeve 8 is provided on the front support 2, and a rear fixing sleeve 9 is provided on the rear support 1. The two ends of the side fixing rods 5 are inserted into the front fixing sleeve 8 and the rear fixing sleeve 9 respectively, and are fastened by fasteners, such as screws, rivets, and connecting pins.

[0035] The front end of the side support rod 6 is fixedly connected to the front support base 2, and the rear end of the side support rod 6 is rotatably connected to the rear support base 1. The front end of the side support rod 6 is inserted into the front fixing sleeve 8 on the front support base 2 and secured with fasteners such as screws, rivets, and connecting pins. The rear support base 1 is provided with a mounting groove 10, in which the rear end of the side support rod 6 is rotatably mounted. A rotating shaft is connected between the two side walls of the mounting groove 10, and the rotating shaft passes through the side support rod 6, with the side support rod 6 rotatably connected to the rotating shaft. The mounting groove 10 on the rear support base 1 provides space for the connection and rotation of the side support rod 6.

[0036] One end of the front support rod 7 is rotatably connected to a front support base 2, and the other end of the front support rod 7 is detachably connected to another front support base 2. A spring clip 11 is installed at the other end of the front support rod 7, and a spring pin 12 is provided on the spring clip 11. The spring clip 11 is elongated, and one end of the spring clip 11 forms a V-shaped elastic part 13. The end of the elastic part 13 is bent to form an abutment edge. The spring clip 11 is installed in the tubular front support rod 7 near its end. The front support rod 7 has a through hole 14, through which the spring pin 12 protrudes. A slot 15 is provided on the other front support base 2, and a locking hole 16 is provided on the side wall of the slot 15. The other end of the front support rod 7 is installed in the slot 15, and the spring pin 12 is inserted into the locking hole 16. A pressing post 17 is provided on the spring clip 11, and a mounting hole 18 is provided on the front support rod 7. The pressing post 17 passes through the mounting hole 18 and protrudes outwards.

[0037] The front support rod 7 and the front support base 2 are detachably connected via a spring pin 12 inserted into a locking hole 16. The spring latch 11 provides elastic force to the spring pin 12, which is then inserted into the locking hole 16 for locking. When disassembly is required, pressing the pressing post 17 causes the spring pin 12 to retract inward and disengage from the locking hole 16, allowing the front support rod 7 to be pulled out of the slot 15. The front support rod 7 is easy to assemble and disassemble. The pressing post 17 passes through the mounting hole 18, positioning the spring latch 11 and preventing it from disengaging from the front support rod 7, ensuring the reliability of the spring latch connection.

[0038] The outer end of the pressing column 17 is connected to the pressing plate 19, which is threaded to the pressing column 17. The outer diameter of the pressing plate 19 is larger than the diameter of the mounting hole 18. The connection of the pressing plate 19 to the outer end of the pressing column 17 facilitates the pressing operation of the pressing column 17 and prevents the pressing column 17 from getting stuck in the front support rod 7 due to excessive pressing during the pressing process.

[0039] Two backrest rods 20 are mounted on the rear support seat 1, and support rods 21 are mounted on both front support seats 2. The backrest rods 20 have a bent portion formed in the middle. Both the support rods 21 and the backrest rods 20 slope outwards from bottom to top. A front support sleeve 22 with an upward-facing opening is provided on the front support seat 2, and a rear support sleeve 23 with an upward-facing opening is provided on the rear support seat 1. The lower end of the support rod 21 is detachably inserted into the front support sleeve 22, and the lower end of the backrest rod 20 is detachably inserted into the rear support sleeve 23. The backrest rod 20 includes an upper section 24, a middle section 25, and a lower section 26. The bent portion is located on the middle section 25, and both ends of the middle section 25 are respectively inserted and connected to the upper section 24 and the lower section 26. A front tube plug 27 is connected to the upper end of the support rod 21, and an elastic rope is connected between the front tube plug 27 and the front support sleeve 22. The upper end of the backrest rod 20 is connected to the rear tube plug 28, and an elastic rope is connected between the rear tube plug 28 and the rear support sleeve 23. The backrest rod 20 is composed of an upper section rod 24, a middle section rod 25 and a lower section rod 26 connected by inserts. It can be disassembled for storage, shortening its length, reducing packaging volume and lowering maintenance costs.

[0040] When the folding portable chair is unfolded, the two ends of the side fixing rod 5 are fixedly connected between the rear support seat 1 and one front support seat 2, the side support rod 6 is connected between the rear support seat 1 and another front support seat 2, and the front support rod 7 is connected between the two front support seats 2, thus forming a triangular structure. The triangle provides good stability, ensuring the stability of the entire folding chair during use. For storage, one end of the front support rod 7 is detached from the front support seat 2, and then the front support rod 7 and the side support rod 6 are rotated to bring them closer to the side fixing rod 5, ultimately folding into a long strip for easy storage. The folding portable chair of this patent application has good structural stability and is convenient to fold and store.

[0041] Example 2: A folding lightweight chair structure (see Figure 5 , Figure 6 The folding chair includes a rear support base 1 and two front support bases 2. Two support legs 3 are mounted on the rear support base 1, and each of the two front support bases 2 also has a support leg 3. The support legs 3 have a tubular structure and slope outwards from top to bottom. The four support legs 3 provide stable and reliable support for the entire chair. Both the rear support base 1 and the front support base 2 are equipped with leg sleeves 4, into which the upper end of the support leg 3 can be detachably inserted. An elastic cord connects the leg sleeve 4 and the support leg 3. After the support leg 3 is removed, the elastic cord connects the support leg 3 and the leg sleeve 4, preventing the support leg 3 from being lost and facilitating its storage.

[0042] The rear support 1 and the two front support 2 are connected by side fixing rods 5 and side support rods 6 respectively, and the two front support 2 are connected by front support rods 7; the side fixing rods 5, side support rods 6, and front support rods 7 are all tubular structures. The two ends of the side fixing rods 5 are fixedly connected to the front support 2 and the rear support 1 respectively; a front fixing sleeve 8 is provided on the front support 2, and a rear fixing sleeve 9 is provided on the rear support 1. The two ends of the side fixing rods 5 are inserted into the front fixing sleeve 8 and the rear fixing sleeve 9 respectively, and are fastened by fasteners, such as screws, rivets, and connecting pins.

[0043] The front end of the side support rod 6 is fixedly connected to the front support base 2, and the rear end of the side support rod 6 is rotatably connected to the rear support base 1. The front end of the side support rod 6 is inserted into the front fixing sleeve 8 on the front support base 2 and secured with fasteners such as screws, rivets, and connecting pins. The rear support base 1 is provided with a mounting groove 10, in which the rear end of the side support rod 6 is rotatably mounted. A rotating shaft is connected between the two side walls of the mounting groove 10, and the rotating shaft passes through the side support rod 6, with the side support rod 6 rotatably connected to the rotating shaft. The mounting groove 10 on the rear support base 1 provides space for the connection and rotation of the side support rod 6.

[0044] One end of the front support rod 7 is rotatably connected to a front support base 2, and the other end of the front support rod 7 is detachably connected to another front support base 2. A spring clip 11 is installed at the other end of the front support rod 7. A spring pin 12 is provided on the spring clip 11. The spring clip 11 is elongated, with one end forming a V-shaped elastic portion 13. The end of the elastic portion 13 is bent to form an abutment edge. The spring clip 11 is installed in the tubular front support rod 7 near its end. The front support rod 7 has a through hole 14 through which the spring clip 11 passes. A slot 15 is provided on the other front support base 2, and a locking hole 16 is provided on the side wall of the slot 15. The other end of the front support rod 7 is installed in the slot 15, and the spring pin 12 is inserted into the locking hole 16. A pressing post 17 is provided on the spring clip 11, and a mounting hole 18 is provided on the front support rod 7. The pressing post 17 passes through the mounting hole 18 and protrudes outwards.

[0045] The side wall of the slot 15 with the locking hole 16 is inclined to form a guide surface 29, and the spring pin 12 is pushed inward against the guide surface 29. A guide groove 30 is provided on the side wall of the slot 15 with the locking hole 16. The outer end of the spring pin 12 is inserted into the guide groove 30, and the spring pin 12 slides along the guide groove 30 into the locking hole 16. During the unfolding of the folding chair, the end of the front support rod 7 is inserted into the slot 15, and the spring pin 12 is pushed inward against the inclined guide surface 29, thus sliding into the locking hole 16. Under the elastic force of the spring buckle 11, the spring pin 12 pops out and connects with the locking hole 16. With this structure, the connection between the spring pin 12 and the locking hole 16 can be achieved without manually pressing the spring buckle 11, making it more convenient. The guide groove 30 provides positioning and guidance for the spring pin 12, ensuring that the spring pin 12 can be accurately inserted into the locking hole 16.

[0046] The front support rod 7 and the front support base 2 are detachably connected via a spring pin 12 inserted into a locking hole 16. The spring latch 11 provides elastic force to the spring pin 12, which is then inserted into the locking hole 16 for locking. When disassembly is required, pressing the pressing post 17 causes the spring pin 12 to retract inward and disengage from the locking hole 16, allowing the front support rod 7 to be pulled out of the slot 15. The front support rod 7 is easy to assemble and disassemble. The pressing post 17 passes through the mounting hole 18, positioning the spring latch 11 and preventing it from disengaging from the front support rod 7, ensuring the reliability of the spring latch connection.

[0047] Two backrest rods 20 are mounted on the rear support seat 1, and support rods 21 are mounted on both front support seats 2. The backrest rods 20 have a bent portion formed in the middle. Both the support rods 21 and the backrest rods 20 slope outwards from bottom to top. A front support sleeve 22 with an upward-facing opening is provided on the front support seat 2, and a rear support sleeve 23 with an upward-facing opening is provided on the rear support seat 1. The lower end of the support rod 21 is detachably inserted into the front support sleeve 22, and the lower end of the backrest rod 20 is detachably inserted into the rear support sleeve 23. The backrest rod 20 includes an upper section 24, a middle section 25, and a lower section 26. The bent portion is located on the middle section 25, and both ends of the middle section 25 are respectively inserted and connected to the upper section 24 and the lower section 26. A front tube plug 27 is connected to the upper end of the support rod 21, and an elastic rope is connected between the front tube plug 27 and the front support sleeve 22. The upper end of the backrest rod 20 is connected to the rear tube plug 28, and an elastic rope is connected between the rear tube plug 28 and the rear support sleeve 23. The backrest rod 20 is composed of an upper section rod 24, a middle section rod 25 and a lower section rod 26 connected by inserts. It can be disassembled for storage, shortening its length, reducing packaging volume and lowering maintenance costs.

[0048] When the folding portable chair is unfolded, the two ends of the side fixing rod 5 are fixedly connected between the rear support seat 1 and one front support seat 2, the side support rod 6 is connected between the rear support seat 1 and another front support seat 2, and the front support rod 7 is connected between the two front support seats 2, thus forming a triangular structure. The triangle provides good stability, ensuring the stability of the entire folding chair during use. For storage, one end of the front support rod 7 is detached from the front support seat 2, and then the front support rod 7 and the side support rod 6 are rotated to bring them closer to the side fixing rod 5, ultimately folding into a long strip for easy storage. The folding portable chair of this patent application has good structural stability and is convenient to fold and store.

[0049] Example 3: A folding lightweight chair structure (see Figure 7 Its structure is similar to that of Embodiment 1, the main difference being that in this embodiment, the outer end of the pressing post 17 is no longer connected to the pressing plate 19, and the outer end of the pressing post 17 is directly exposed. Pressing the pressing post 17 directly presses the spring buckle 11, causing the spring pin 12 to disengage from the locking hole 16. Other structures are the same as in Embodiment 1.

[0050] Example 4: A folding lightweight chair structure (see Figure 8 The structure is similar to that of Embodiment 1, with the main difference being that the end of the side wall of the slot 15 with the locking hole 16 in this embodiment is inclined to form a guide surface 29, and the spring pin 12 is pushed inward against the guide surface 29. A guide groove 30 is provided on the side wall of the slot 15 with the locking hole 16, and the outer end of the spring pin 12 is inserted into the guide groove 30, and the spring pin 12 slides along the guide groove 30 into the locking hole 16. During the unfolding of the folding lightweight chair, the end of the front support rod 7 is inserted into the slot 15, and the spring pin 12 is pushed inward against the inclined guide surface 29, thereby sliding into the locking hole 16. Under the action of the spring buckle 11, the spring pin 12 pops out and is inserted into the locking hole 16. With this structural setting, it is no longer necessary to manually press the spring buckle 11 to achieve the connection between the spring pin 12 and the locking hole 16, which is more convenient. The guide groove 30 plays a positioning and guiding role for the spring pin 12, ensuring that the spring pin 12 can be accurately inserted into the locking hole 16. The other structures are the same as in Example 1.

[0051] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A folding lightweight chair structure, characterized in that, It includes a rear support base and two front support bases. The rear support base and the two front support bases are respectively connected by a side fixing rod and a side support rod, and the two front support bases are connected by a front support rod. The two ends of the side fixing rod are fixedly connected to the front support base and the rear support base respectively. The front end of the side support rod is fixedly connected to the front support base, and the rear end of the side support rod is rotatably connected to the rear support base. One end of the front support rod is rotatably connected to one front support base, and the other end of the front support rod is detachably connected to another front support base.

2. The folding lightweight chair structure according to claim 1, characterized in that, The rear support base is provided with a mounting groove, and the rear end of the side support rod is rotatably installed in the mounting groove.

3. The folding lightweight chair structure according to claim 1, characterized in that, Two support feet are installed on the rear support base, and support feet are installed on both front support bases.

4. The folding lightweight chair structure according to claim 1, characterized in that, Two backrest rods are installed on the rear support base, and support rods are installed on both front support bases.

5. The folding lightweight chair structure according to claim 4, characterized in that, A bend is provided on the backrest rod, and the bend is formed in the middle of the backrest rod.

6. A folding lightweight chair structure according to any one of claims 1 to 5, characterized in that, A spring clip is installed at the other end of the front support rod, and a spring pin is set on the spring clip. A slot is set on the other front support base, and a locking hole is set on the side wall of the slot. The other end of the front support rod is installed in the slot, and the spring pin is inserted into the locking hole.

7. The folding lightweight chair structure according to claim 6, characterized in that, The snap fastener is equipped with a pressing post, and the front support rod is equipped with a mounting hole. The pressing post passes through the mounting hole and protrudes outward.

8. The folding lightweight chair structure according to claim 7, characterized in that, The outer end of the pressing column is connected to the pressing plate.

9. A folding lightweight chair structure according to claim 6, characterized in that, The end of the slot sidewall with the locking hole is inclined to form a guide surface, and the spring pin is pushed inward against the guide surface.

10. A folding lightweight chair structure according to claim 6, characterized in that, A guide groove is provided on the side wall of the slot with the locking hole. The outer end of the spring pin is inserted into the guide groove, and the spring pin slides along the guide groove into the locking hole.

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