Folding chair with adjustable seat height

Abstract

The utility model discloses a seat-height-adjustable folding chair, and aims to overcome the defects that when the folding chair is unfolded for use, the sitting height is fixed, the fixed sitting height cannot adapt to the use of everyone, and the use experience is influenced. The folding chair comprises a folding chair body, a front supporting leg and a rear supporting leg are arranged on the folding chair body, the front supporting leg and the rear supporting leg are obliquely arranged, a front lifting supporting rod is rotationally connected to the front supporting leg, a rear lifting supporting rod is rotationally connected to the rear supporting leg, and the front lifting supporting rod extends out of the lower end of the front supporting leg after being turned downwards in place. And the rear lifting support rod extends out of the lower end of the rear support leg after being turned downwards in place. The sitting height of the folding chair can be adjusted, and the folding chair is suitable for different users and good in use experience.

Description

TECHNICAL FIELD

[0001] The utility model relates to a folding chair, more particularly to a seat height adjustable folding chair. BACKGROUND

[0002] Folding chair is a common furniture in our daily life, because it can be folded and stored, the space occupied is small, and it is convenient to carry out, and is favored by consumers. However, the sitting height of many folding chairs used at present is fixed when being unfolded and used, the fixed sitting height cannot adapt to the use of each person, and the use experience is affected. SUMMARY

[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a seat height adjustable folding chair, the sitting height of the folding chair can be adjusted, is suitable for different users, and the use experience is good.

[0004] In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a seat height adjustable folding chair, including folding chair body, front support leg and rear support leg are arranged on the folding chair body, the front support leg and the rear support leg are all arranged obliquely, the front lifting support rod is rotatably connected on the front support leg, the rear lifting support rod is rotatably connected on the rear support leg, the front lifting support rod extends out the lower end of the front support leg after being turned down to place, and the rear lifting support rod extends out the lower end of the rear support leg after being turned down to place.

[0005] When the folding chair is unfolded and normally used, the front support leg and the rear support leg are supported on the ground and support the whole folding chair, at this time, the folding chair is used in a low position. When the sitting height needs to be increased, the front lifting support rod is turned down and the lower end of the front lifting support rod is supported on the ground, the rear lifting support rod is turned down and the lower end of the rear lifting support rod is supported on the ground, at this time, the lower end of the front lifting support rod extends out the lower end of the front support leg, the lower end of the rear lifting support rod extends out the lower end of the rear support leg, and the lower end of the front lifting support rod and the lower end of the rear lifting support rod support the whole folding chair, thereby increasing the sitting height of the folding chair.

[0006] The sitting height of the folding chair of the patent application can be adjusted, is suitable for different users, and the use experience is good.

[0007] As preferred, the front support leg is fastened with a front support base, and the front lifting support rod is rotatably connected to the front support base; the rear support leg is fastened with a rear support base, and the rear lifting support rod is rotatably connected to the rear support base.

[0008] The front lifting support rod is rotatably installed on the front support base, and the rear lifting support rod is rotatably installed on the rear support base, so that the connection is convenient and reliable.

[0009] As preferred, mounting slots are arranged on the front and rear supports, and clamping protrusions are arranged on the two side walls of the mounting slots. The front lifting support is clamped between the two clamping protrusions on the front support after being turned up, and the rear lifting support is clamped between the two clamping protrusions on the rear support after being turned up.

[0010] The arrangement of the mounting slots achieves reliable positioning of the front and rear lifting supports after installation. The clamping protrusions arranged in the mounting slots can limit the front and rear lifting supports. When the front and rear lifting supports are turned up, the front and rear lifting supports are clamped between the clamping protrusions, preventing the front and rear lifting supports from falling to the ground.

[0011] As preferred, the front leg is fastened with a front positioning seat, and the rear leg is fastened with a rear positioning seat. C-shaped positioning slots are arranged on the front and rear positioning seats. The front and rear lifting supports are clamped in the two positioning slots after being turned down.

[0012] The C-shaped positioning slots limit the front and rear lifting supports. The front and rear lifting supports are stressed in the positioning slots, which provide stress support points for the front and rear lifting supports, ensuring the stability of the front and rear lifting supports supporting the entire folding chair.

[0013] As preferred, a seat rod is rotatably connected to the front leg, a back rod is rotatably connected to the rear of the seat rod, an armrest is rotatably connected between the back rod and the front leg, a support rod is connected to the seat rod, and the support rod is supported on the rear leg.

[0014] When the folding chair is unfolded for use, the support rod is supported on the rear leg, which is stable and reliable.

[0015] As preferred, the support rod is connected with a positioning rod, the lower end of the positioning rod is hingedly connected to the rear leg, and the support rod is rotatably connected with the seat rod.

[0016] The arrangement of the positioning rod makes the folding chair smaller in size after being folded, facilitating storage and carrying.

[0017] As preferred, a reversible back support rod is connected to the back rod near the upper part of the back rod.

[0018] The back support rod supports the entire back rod. When the back rod is completely unfolded, the back support rod is unfolded and the lower end of the back support rod is supported on the ground, ensuring the stability of the entire folding chair.

[0019] As preferred, a connecting seat is fastened to the back support rod, the connecting seat is rotatably installed on the back rod, and a clamping groove adapted to the back rod is arranged on the connecting seat. The clamping groove and the back rod are clamped together after the back support rod is turned up.

[0020] The backrest support rod and the backrest rod are connected through the connecting seat, and the connection is convenient and reliable.

[0021] As preferred, the handrail is provided with an inclination adjusting plate, a plurality of inclined tooth slots are arranged on the inclination adjusting plate, a pin shaft is connected between the upper ends of the front leg and the rear leg, and the pin shaft is clamped in the tooth slots.

[0022] During the unfolding use of the folding chair, the inclination angle of the backrest rod is adjusted through the sliding handrail, the inclination adjusting plate moves relative to the pin shaft during the sliding of the handrail, and the positioning of the handrail is realized when the pin shaft is slid into the appropriate tooth slot.

[0023] As preferred, two positioning discs are connected to the pin shaft, the inclination adjusting plate is arranged between the two positioning discs, a rotating shaft is connected between the upper ends of the front leg and the rear leg, and the rotating shaft is movably inserted and connected with the pin shaft.

[0024] The inclination adjusting plate is arranged between the two positioning discs, and the left and right deviation of the handrail is prevented during the sliding adjustment of the handrail.

[0025] Compared with the prior art, the folding chair of the patent application has the advantages that: (1) the sitting height of the folding chair can be adjusted, is suitable for different users, and has good use experience; (2) when the front lifting support rod and the rear lifting support rod are turned upward, the front lifting support rod and the rear lifting support rod are clamped between the clamping protrusions, so that the front lifting support rod and the rear lifting support rod are prevented from falling to the ground; and (3) when the backrest rod is completely unfolded, the backrest support rod is unfolded and the lower end of the backrest support rod is supported on the ground, so that the stability of the entire folding chair is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a normal height structure diagram of the folding chair of the utility model.

[0027] Figure 2 is a structure diagram of the folding chair after being raised of the utility model.

[0028] Figure 3 is a structure diagram of the folding chair after being folded of the utility model.

[0029] Figure 4 is a front support connecting schematic view of the utility model.

[0030] Figure 5 is a inclination adjusting plate connecting schematic view of the utility model.

[0031] Figure 6 is a connecting seat structure diagram of the utility model.

[0032] In the figure: 1, folding chair body, 2, front support leg, 3, rear support leg, 4, crossbar, 5, front lifting support rod, 6, rear lifting support rod, 7, front support, 8, rear support, 9, mounting slot, 10, clamping convex, 11, front positioning seat, 12, rear positioning seat, 13, positioning slot, 14, seat rod, 15, backrest rod, 16, mounting seat, 17, handrail, 18, support rod, 19, positioning rod, 20, backrest support rod, 21, connecting seat, 22, clamping groove, 23, boss, 24, inclination adjusting plate, 25, tooth groove, 26, positioning disc. DETAILED DESCRIPTION

[0033] The technical scheme of the present application will be further described below in conjunction with specific embodiments and the accompanying drawings:

[0034] Embodiment 1: A seat height adjustable folding chair (see attached Figure 1 to the attached Figure 6 ), comprising a folding chair body 1, a front support leg 2 and a rear support leg 3 are arranged on the folding chair body 1, the front support leg 2 and the rear support leg 3 are both arranged obliquely, the upper end of the front support leg 2 and the upper end of the rear support leg 3 are rotatably connected together to form a "person" shaped structure. The front support leg 2 and the rear support leg 3 are both in the shape of a U with the opening facing upwards, the front support leg 2 is inclined forward from top to bottom, the rear support leg 3 is inclined backward from top to bottom, and the front support leg 2 is tightly connected with a transversely arranged crossbar 4 at the upper end. The crossbar 4 is pressed flat at both ends and is tightly connected with the front support leg 2 by screws.

[0035] A front lifting support rod 5 is rotatably connected to the front support leg 2, and a rear lifting support rod 6 is rotatably connected to the rear support leg 3, both the front lifting support rod 5 and the rear lifting support rod 6 are in the shape of a U, the front lifting support rod 5 extends out of the lower end of the front support leg 2 after being flipped down into place, and the rear lifting support rod 6 extends out of the lower end of the rear support leg 3 after being flipped down into place.

[0036] Two front supports 7 are tightly connected to the front support leg 2, and the ends of the front lifting support rod 5 are rotatably connected to the two front supports 7 respectively; two rear supports 8 are tightly connected to the rear support leg 3, and the ends of the rear lifting support rod 6 are rotatably connected to the two rear supports 8 respectively. The front supports 7 and the rear supports 8 are both provided with mounting slots 9, clamping convexes 10 are arranged on the side walls of the mounting slots 9, the front lifting support rod 5 is clamped between the two clamping convexes 10 on the front support 7 after being flipped up into place, and the rear lifting support rod 6 is clamped between the two clamping convexes 10 on the rear support 8 after being flipped up into place. The front supports 7 and the rear supports 8 are both in the shape of a U, the bottoms of the front supports 7 and the rear supports 8 are clamped on the front support leg 2 and the rear support leg 3 respectively and are tightly connected by screws.

[0037] The installation groove 9 is provided to realize reliable positioning of the front lifting support 5 and the rear lifting support 6 after installation. The clamping protrusions 10 provided in the installation groove 9 can limit the front lifting support 5 and the rear lifting support 6. When the front lifting support 5 and the rear lifting support 6 are turned upward, the front lifting support 5 and the rear lifting support 6 are clamped between the clamping protrusions 10, thereby preventing the front lifting support 5 and the rear lifting support 6 from falling to the ground.

[0038] The front positioning seat 11 is fastened and connected to the front leg 2, and the rear positioning seat 12 is fastened and connected to the rear leg 3. The front positioning seat 11 and the rear positioning seat 12 are provided with C-shaped positioning grooves 13. The front lifting support 5 and the rear lifting support 6 are clamped in the two positioning grooves 13 after being turned downward to position.

[0039] The C-shaped positioning grooves 13 limit the front lifting support 5 and the rear lifting support 6. The front lifting support 5 and the rear lifting support 6 are stressed in the positioning grooves 13. The positioning grooves 13 provide stress support points for the front lifting support 5 and the rear lifting support 6, thereby ensuring the stability of the front lifting support 5 and the rear lifting support 6 supporting the entire folding chair.

[0040] The seat rod 14 is in a U-shaped structure with an opening facing forward. The horizontal rod at the rear of the seat rod 14 is bent downward to form an arc-shaped structure with a concave middle part. The backrest rod 15 is rotationally connected to the rear of the seat rod 14. The backrest rod 15 is in a U-shaped structure with an opening facing downward. Two U-shaped mounting seats 16 are provided on the seat rod 14 and correspond to the backrest rod 15. The mounting seats 16 are clamped to the seat rod 14 and fastened and connected by screws. The lower end of the backrest rod 15 is rotationally mounted in the two mounting seats 16. The armrest 17 is rotationally connected between the backrest rod 15 and the front leg 2. The support rod 18 is connected to the seat rod 14. The support rod 18 is supported on the rear leg 3. The support rod 18 is connected to the positioning rod 19. The lower end of the positioning rod 19 is hingedly connected to the rear leg 3. The support rod 18 is rotationally connected to the seat rod 14.

[0041] The backrest rod 15 is connected with the reversible backrest supporting rod 20 near the upper position. The backrest supporting rod 20 is in a U-shaped structure, and two connecting seats 21 are fixedly connected to the backrest supporting rod 20. The two connecting seats 21 are rotatably installed on the backrest rod 15, and the connecting seat 21 is provided with a clamping groove 22 matched with the backrest rod 15. When the backrest supporting rod 20 is turned up to the position, the clamping groove 22 is clamped with the backrest rod 15. The two opposite protrusions 23 are arranged on the inner wall of the clamping groove 22, and the backrest rod 15 is clamped between the two protrusions 23. When the backrest supporting rod 20 is turned up to the position, the included angle between the backrest supporting rod 20 and the backrest rod 15 is obtuse. The backrest supporting rod 20 and the backrest rod 15 are connected through the connecting seat 21, which is convenient and reliable. When the backrest supporting rod 20 is turned up to the position, the clamping groove 22 on the connecting seat 21 is clamped on the backrest rod 15, which increases the supporting area and ensures the stability of the backrest supporting rod 20. When the backrest rod 15 is fully unfolded, the backrest supporting rod 20 is unfolded and the lower end of the backrest supporting rod 20 is supported on the ground, which ensures the stability of the entire folding chair. At this time, the folding chair is used as a reclining chair.

[0042] The handrail 17 is provided with an inclination adjusting plate 24. The inclination adjusting plate 24 is arranged below the handrail 17. A plurality of inclined tooth grooves 25 are arranged on the inclination adjusting plate 24. The tooth grooves 25 are inclined from front to back and downward. A pin shaft is connected between the upper ends of the front leg 2 and the rear leg 3. The pin shaft is clamped in the tooth groove 25. Two positioning discs 26 are connected to the pin shaft. The inclination adjusting plate 24 is arranged between the two positioning discs 26. A rotating shaft is connected between the upper ends of the front leg 2 and the rear leg 3. The rotating shaft is movably connected with the pin shaft. The front leg 2 and the rear leg 3 are rotatably connected through the rotating shaft.

[0043] When the folding chair is unfolded and used normally, the front leg 2 and the rear leg 3 are supported on the ground to support the entire folding chair. At this time, the folding chair is used in a low position. When the sitting height needs to be increased, the front lifting rod 5 is turned down and the lower end of the front lifting rod 5 is supported on the ground. The rear lifting rod 6 is turned down and the lower end of the rear lifting rod 6 is supported on the ground. At this time, the lower end of the front lifting rod 5 extends out of the lower end of the front leg 2, and the lower end of the rear lifting rod 6 extends out of the lower end of the rear leg 3. The lower end of the front lifting rod 5 and the lower end of the rear lifting rod 6 support the entire folding chair, thereby increasing the sitting height of the folding chair.

[0044] Embodiment 2: A folding chair with adjustable seat height (see attached Figure 1 to the attached Figure 5The folding chair comprises a folding chair body 1, with front legs 2 and rear legs 3 disposed thereon. Both legs are tilted, with the upper ends of the front legs 2 and rear legs 3 pivoted together to form a herringbone structure. Both legs are U-shaped, with the opening facing upward. The front legs 2 tilt forward from top to bottom, while the rear legs 3 tilt backward from top to bottom. A transverse crossbar 4 is securely connected to the front legs 2. The crossbar 4 is flattened at both ends and fastened to the front legs 2 with screws.

[0045] The front support leg 2 is rotatably connected to the front lifting support rod 5, and the rear support leg 3 is rotatably connected to the rear lifting support rod 6. The front lifting support rod 5 and the rear lifting support rod 6 are both U-shaped structures. After the front lifting support rod 5 is flipped downward into place, it extends out of the lower end of the front support leg 2, and after the rear lifting support rod 6 is flipped downward into place, it extends out of the lower end of the rear support leg 3.

[0046] The front support leg 2 is fastened to the two front supports 7, and the two ends of the front lifting rod 5 are rotatably connected to the two front supports 7. The rear support leg 3 is fastened to the two rear supports 8, and the two ends of the rear lifting rod 6 are rotatably connected to the two rear supports 8. Both the front support 7 and the rear support 8 are provided with mounting grooves 9, and both side walls of the mounting grooves 9 are provided with latching protrusions 10. After the front lifting rod 5 is flipped upward and into position, it is latched between the two latching protrusions 10 on the front support 7. After the rear lifting rod 6 is flipped upward and into position, it is latched between the two latching protrusions 10 on the rear support 8. The front support 7 and the rear support 8 are both U-shaped structures, and the bottoms of the front support 7 and the rear support 8 are respectively latched onto the front support leg 2 and the rear support leg 3 and fastened with screws.

[0047] The installation groove 9 realizes the reliable positioning of the front and rear lifting support rods 5 and 6 after installation. The locking protrusions 10 provided in the installation groove 9 can limit the position of the front and rear lifting support rods 5 and 6. When the front and rear lifting support rods 5 and 6 are turned upward, the front and rear lifting support rods 5 and 6 are locked between the locking protrusions 10 to prevent the front and rear lifting support rods 5 and 6 from falling to the ground.

[0048] The front support leg 2 is fastened to the two front positioning seats 11, and the rear support leg 3 is fastened to the two rear positioning seats 12. C-shaped positioning grooves 13 are provided on the front positioning seats 11 and the rear positioning seats 12. The front lifting support rod 5 and the rear lifting support rod 6 are flipped down into place and respectively clamped in the two positioning grooves 13.

[0049] The C-shaped positioning groove 13 serves to limit the front lifting support rod 5 and the rear lifting support rod 6. The front lifting support rod 5 and the rear lifting support rod 6 are subjected to force in the positioning groove 13. The positioning groove 13 provides a force fulcrum for the front lifting support rod 5 and the rear lifting support rod 6, ensuring that the front lifting support rod 5 and the rear lifting support rod 6 support the stability of the entire folding chair.

[0050] The rod 14 is rotatably connected to the seat 2, and the rod 14 is in a U-shaped structure with an opening facing forward. The horizontal rod at the rear of the rod 14 is bent downward to form an arc-shaped structure with a concave middle portion. The backrest rod 15 is rotatably connected to the rear of the rod 14, and the backrest rod 15 is in a U-shaped structure with an opening facing downward. Two U-shaped mounting seats 16 are arranged on the rod 14 and the backrest rod 15 correspondingly. The mounting seats 16 are clamped to the rod 14 and are fastened and connected by screws. The lower end of the backrest rod 15 is rotatably mounted in the two mounting seats 16. The armrest 17 is rotatably connected between the backrest rod 15 and the front leg 2. The support rod 18 is connected to the rod 14 and is supported on the rear leg 3. The support rod 18 is connected to the positioning rod 19, and the lower end of the positioning rod 19 is hingedly connected to the rear leg 3. The support rod 18 is rotatably connected to the rod 14.

[0051] The backrest support rod 20 is rotatably connected to the backrest rod 15 near the upper portion. The backrest support rod 20 is in a U-shaped structure. Two connecting seats 21 are fastened and connected to the backrest support rod 20. The two connecting seats 21 are connected to the two ends of the backrest support rod 20 respectively. The two connecting seats 21 are rotatably mounted on the backrest rod 15. The backrest rod 15 is provided with a spring pin correspondingly. The connecting seat 21 is provided with a locking hole. After the backrest support rod 20 is turned upward to the position, the spring pin is inserted into the locking hole to realize reliable positioning of the backrest support rod 20. The connecting seat 21 is provided with a clamping groove 22 matched with the backrest rod 15. After the backrest support rod 20 is turned upward to the position, the clamping groove 22 is clamped together with the backrest rod 15. Two opposite bosses 23 are arranged on the inner wall of the clamping groove 22. The backrest rod 15 is clamped between the two bosses 23. After the backrest support rod 20 is turned upward to the position, the included angle between the backrest support rod 20 and the backrest rod 15 is obtuse. The backrest support rod 20 and the backrest rod 15 are connected through the connecting seat 21, which is convenient and reliable. After the backrest support rod 20 is turned to the position, the clamping groove 22 on the connecting seat 21 is clamped on the backrest rod 15, which increases the supporting area and ensures the stability of the backrest support rod 20. After the backrest support rod 20 is turned upward to the position, the spring pin is inserted into the locking hole to realize positioning of the backrest support rod 20. At this time, a frame structure is formed between the upper end of the backrest support rod 20 and the backrest rod 15. A cloth bag is sleeved on the frame structure for use, so that the folding chair has a storage function. Since the spring is locked in the locking hole, the backrest support rod 20 will not fall over, which ensures the reliability of storage. When it is needed to be used as a lying chair, the backrest support rod 20 can be supported on the ground by directly lowering the backrest rod 15 to the lowest position to play a supporting role. The spring pin can be pressed to be unlocked, so that the backrest support rod 20 is turned downward.

[0052] The handrail 17 is provided with an inclination adjusting plate 24, which is arranged below the handrail 17. A plurality of inclined tooth grooves 25 are arranged on the inclination adjusting plate 24. The tooth grooves 25 are inclined from front to back and downward. A pin shaft is connected between the upper ends of the front leg 2 and the rear leg 3, and the pin shaft is clamped in the tooth grooves 25. Two positioning discs 26 are connected to the pin shaft, and the inclination adjusting plate 24 is arranged between the two positioning discs 26. A rotating shaft is connected between the upper ends of the front leg 2 and the rear leg 3, and the rotating shaft is movably clamped with the pin shaft. The front leg 2 and the rear leg 3 are rotatably connected through the rotating shaft.

[0053] When the folding chair is unfolded and used normally, the front leg 2 and the rear leg 3 are supported on the ground to support the whole folding chair. At this time, the folding chair is used in a low position. When the sitting height needs to be increased, the front lifting support rod 5 is turned downward and the lower end of the front lifting support rod 5 is supported on the ground. The rear lifting support rod 6 is turned downward and the lower end of the rear lifting support rod 6 is supported on the ground. At this time, the lower end of the front lifting support rod 5 extends out of the lower end of the front leg 2, and the lower end of the rear lifting support rod 6 extends out of the lower end of the rear leg 3. The lower end of the front lifting support rod 5 and the lower end of the rear lifting support rod 6 support the whole folding chair, so as to increase the sitting height of the folding chair.

[0054] The above-described embodiments are only the preferred embodiments of the present application, and do not limit the present application in any form. Other variants and modifications can be made without departing from the technical solutions recited in the claims.

Claims

1. A folding chair with adjustable seat height, comprising a folding chair body, characterized in that: The folding chair body is provided with a front support leg and a rear support leg, both of which are tilted. The front support leg is rotatably connected to a front lifting support rod, and the rear support leg is rotatably connected to a rear lifting support rod. The front lifting support rod is flipped downward into position and extends from the lower end of the front support leg. The rear lifting support rod is flipped downward into position and extends from the lower end of the rear support leg.

2. A folding chair with adjustable seat height according to claim 1, characterized in that: The front supporting legs are tightly connected to the front support, and the front lifting support rod is rotatably connected to the front support; the rear supporting legs are tightly connected to the rear support, and the rear lifting support rod is rotatably connected to the rear support.

3. The folding chair with adjustable seat height according to claim 2, wherein: The front support and the rear support are both provided with mounting grooves, and the two side walls of the mounting grooves are both provided with clamping protrusions. After the front lifting support rod is flipped upward and into position, it is clamped between the two clamping protrusions on the front support, and after the rear lifting support rod is flipped upward and into position, it is clamped between the two clamping protrusions on the rear support.

4. The folding chair with adjustable seat height according to claim 1, wherein: The front supporting legs are fastened to the front positioning seat, and the rear supporting legs are fastened to the rear positioning seat. Both the front positioning seat and the rear positioning seat are provided with C-shaped positioning grooves. The front lifting support rod and the rear lifting support rod are flipped down into place and respectively clamped in the two positioning grooves.

5. A folding chair with adjustable seat height according to any one of claims 1 to 4, characterized in that: The front support leg is rotatably connected to the seat rod, the rear part of the seat rod is rotatably connected to the backrest rod, the backrest rod and the front support leg are rotatably connected to the armrest, the seat rod is connected to the support rod, and the support rod is supported on the rear support leg.

6. The folding chair with adjustable seat height according to claim 5, characterized in that: The support rod is connected to the positioning rod, the lower end of the positioning rod is hinged on the rear support leg, and the support rod is rotatably connected to the seat rod.

7. The folding chair with adjustable seat height according to claim 5, characterized in that: A tiltable backrest support rod is connected to the backrest rod near the upper portion.

8. The folding chair with adjustable seat height according to claim 7, wherein: The backrest support rod is fastened with a connecting seat, which is rotatably mounted on the backrest rod. The connecting seat is provided with a clamping groove adapted to the backrest rod; after the backrest support rod is flipped upward into place, the clamping groove is clamped together with the backrest rod.

9. The folding chair with adjustable seat height according to claim 5, characterized in that: An inclination adjustment plate is installed on the armrest. A plurality of inclined tooth grooves are arranged at intervals on the inclination adjustment plate. A pin shaft is connected between the upper ends of the front supporting legs and the rear supporting legs, and the pin shaft is clamped in the tooth groove.

10. The folding chair with adjustable seat height according to claim 9, characterized in that: The pin shaft is connected with two positioning plates, the inclination adjustment plate is placed between the two positioning plates, the upper ends of the front supporting legs and the rear supporting legs are connected with a rotating shaft, and the rotating shaft is movably plug-in connected with the pin shaft.

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