Folding waist arm chair

Abstract

The utility model provides a folding waist arm chair, which comprises a chair back and a seat support, two sides of the chair back and the seat support are respectively connected through a first left hinge pipe and a first right hinge pipe, the chair back comprises a left chair back pipe and a right chair back pipe, the left chair back pipe and the right chair back pipe are connected through a second hinge pipe, and the second hinge pipe is connected with the second hinge pipe. A left waist back is arranged between the left chair back pipe and one of the first left hinged pipes, a right waist back is arranged between the right chair back pipe and the connecting piece, the left waist back comprises a left arc-shaped support and a left guide block, and the right waist back comprises a right arc-shaped support and a right guide block; the two ends of the right arc-shaped support are fixed to the right chair back pipe through right fixing pipes, the second upper base is arranged between the two ends of the right arc-shaped support, and the connecting piece comprises an outer sleeve and an outer protruding pipe which are integrally arranged. The folding chair has the beneficial effects that the left waist back and the right waist back are additionally arranged on the basis of an original folding chair, so that the comfort level of the folding chair is improved; meanwhile, the waist and the back can be folded and stored, and occupied space is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of outdoor products, and is particularly suitable for a folding waist chair. Background Art

[0002] Folding chairs are commonly used for leisure activities at home and outdoors. They are easy to move and save space. The applicant previously applied for patent number CN201620059282.7, which is titled "A New Type of Folding Chair." However, the folding chair does not have a lumbar support, which reduces the user experience. Utility Model Content

[0003] The purpose of the utility model is to provide a novel folding lumbar support chair, which has an increased lumbar support part and can be folded and collected, thereby enhancing the user's comfort and reducing space occupation, and is particularly suitable for users at home and outdoors.

[0004] The technical solution of the utility model is: a new type of folding chair, comprising a chair back and a seat support, wherein the chair back and the seat support are connected on both sides by a first left hinge tube and a first right hinge tube respectively.

[0005] The chair back comprises a left chair back tube and a right chair back tube, and the left chair back tube and the right chair back tube are connected by a second hinged tube. The upper sliding sleeve of the left chair back tube is provided with a first upper base, and the lower end is fixed with a first lower base. The upper sliding sleeve of the right chair back tube is provided with a second upper base, and the lower end is fixed with a second lower base. The four ends of the second hinged tube are respectively hinged on the first upper base, the first lower base, the second upper base, and the second lower base.

[0006] The seat support includes a left seat support and a right seat support, and the left seat support and the right seat support are cross-hinged. The upper sliding sleeve of the left seat support is provided with a third upper base, and the lower end is fixed with a third lower base. The upper sliding sleeve of the right seat support is provided with a fourth upper base, and the lower end is fixed with a fourth lower base. The two upper ends of the first left hinged tube are respectively hinged on the third upper base and the first upper base, and the two lower ends of the first left hinged tube are respectively hinged on the first lower base and the fourth lower base. The two upper ends of the first right hinged tube are respectively hinged on the fourth upper base and the second upper base, and the two lower ends of the first right hinged tube are respectively hinged on the second lower base and the third lower base. A left waist back is provided between the left chair back tube and one of the tubes of the first left hinged tube, and a right waist back is provided between the right chair back tube and the connecting piece.

[0007] The left waist back comprises a left arc-shaped support and a left guide block. Both ends of the left arc-shaped support are fixed to the left chair back tube through a left fixed tube, and the first upper base is arranged between the two ends of the left arc-shaped support. A left guide block is fixed to the outside of one of the tubes of the first left hinged tube, and a left guide groove for sliding the left arc-shaped support is provided on the outside of the left guide block. The left arc-shaped support moves along the left guide groove.

[0008] The right waist and back include a right arc-shaped support and a right guide block. Both ends of the right arc-shaped support are fixed to the right chair back tube through a right fixed tube, and the second upper base is arranged between the two ends of the right arc-shaped support. The connecting part includes an outer sleeve and an outer convex tube that are integrally arranged. The lower end of the outer sleeve is sleeved on the outside of the lower end of one of the tubes of the first right hinged tube, and its lower end is hinged together with the lower end of one of the tubes of the first right hinged tube in the third lower base. The outer convex tube is arranged on the outside of the upper end of one of the tubes of the first right hinged tube, and there is a gap between it and the outside of one of the tubes of the first right hinged tube. The upper end of the outer convex tube is hinged in the second upper base, and a right guide block is fixed on the outside of the outer convex tube, and a right guide groove for sliding of the right arc-shaped support is provided on the outside of the right guide block, and the right arc-shaped support moves along the right guide groove.

[0009] Preferably, the outer sleeve and one tube of the first right hinged tube are hingedly connected with the other tube of the first right hinged tube.

[0010] Preferably, the lower surfaces of the first lower base, the second lower base, the third lower base, and the fourth lower base are all provided with anti-slip rings.

[0011] Preferably, the right guide block and the outer convex tube, and the left guide block and the outer side of one of the first left hinged tubes are fixedly connected by bolts.

[0012] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical solution, the left waist back and the right waist back are added on the basis of the original folding chair, thereby improving its comfort; at the same time, the waist back can also be folded and stored, reducing space occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is a schematic diagram of the left waist and back.

[0015] Figure 3 This is a schematic diagram of the right waist and back.

[0016] In the picture:

[0017] 1. Left seat back tube 2. Right seat back tube 3. Second hinged tube

[0018] 4. First upper base 5. First lower base 6. Second upper base

[0019] 7. Second lower base 8. Left seat support 9. Right seat support

[0020] 10. Third upper base 11. Fourth upper base 12. First left hinged tube

[0021] 13. First right hinged tube 14. Left arc-shaped support 15. Left guide block

[0022] 16. Third lower base 17. Right arc-shaped support 18. Right guide block

[0023] 19. External convex tube DETAILED DESCRIPTION

[0024] like Figure 1-3 As shown, the technical solution of the utility model is a new type of folding chair, including a chair back and a seat support, wherein the chair back and the seat support are connected on both sides by a first left hinge tube and a first right hinge tube respectively.

[0025] The chair back comprises a left chair back tube 1 and a right chair back tube 2, which are connected by a second hinged tube 3. The upper sliding sleeve of the left chair back tube 1 is provided with a first upper base 4, and the lower end is fixed with a first lower base 5. The upper sliding sleeve of the right chair back tube 2 is provided with a second upper base 6, and the lower end is fixed with a second lower base 7. The four ends of the second hinged tube 3 are respectively hinged on the first upper base 4, the first lower base 5, the second upper base 6, and the second lower base 7.

[0026] The seat support includes a left seat support 8 and a right seat support 9. The left seat support 8 and the right seat support 9 are cross-hinged. The upper sliding sleeve of the left seat support 8 is provided with a third upper base 10, and the lower end is fixed with a third lower base 16. The upper sliding sleeve of the right seat support 9 is provided with a fourth upper base 11, and the lower end is fixed with a fourth lower base. The two upper ends of the first left hinged tube 12 are respectively hinged on the third upper base 10 and the first upper base 4. The two lower ends of the first left hinged tube 12 are respectively hinged on the first lower base 5 and the fourth lower base. The two upper ends of the first right hinged tube 13 are respectively hinged on the fourth upper base 11 and the second upper base 6. The two lower ends of the first right hinged tube 13 are respectively hinged on the second lower base 7 and the third lower base 16. A left waist back is provided between the left chair back tube 1 and one of the first left hinged tube 12. A right waist back is provided between the right chair back tube 2 and the connecting piece.

[0027] The left waist back comprises a left arc-shaped support 14 and a left guide block 15. Both ends of the left arc-shaped support 15 are fixed to the left chair back tube 1 through a left fixed tube, and the first upper base 4 is provided between the two ends of the left arc-shaped support 15. A left guide block is fixed to the outside of one of the tubes of the first left hinged tube 12, and a left guide groove for sliding the left arc-shaped support 15 is provided on the outside of the left guide block. The left arc-shaped support 15 moves along the left guide groove.

[0028] The right waist and back include a right arc-shaped support 17 and a right guide block 18. Both ends of the right arc-shaped support 17 are fixed to the right chair back tube 2 through a right fixed tube, and the second upper base 6 is arranged between the two ends of the right arc-shaped support 17. The connecting part includes an outer sleeve and an outer convex tube 19 that are integrally arranged. The lower end of the outer sleeve is sleeved on the outside of the lower end of one of the tubes of the first right hinged tube 13, and its lower end is hinged together with the lower end of one of the tubes of the first right hinged tube 13 in the third lower base. The outer convex tube 19 is arranged on the outside of the upper end of one of the tubes of the first right hinged tube 13, and there is a gap between it and the outside of one of the tubes of the first right hinged tube 13. The upper end of the outer convex tube 19 is hinged in the second upper base 6, and a right guide block 18 is fixed on the outside of the outer convex tube 19, and a right guide groove for sliding of the right arc-shaped support 17 is provided on the outside of the right guide block 18, and the right arc-shaped support 17 moves along the right guide groove.

[0029] In this embodiment, the outer sleeve and one tube of the first right hinged tube 13 are hingedly connected to the other tube of the first right hinged tube 13 .

[0030] In this embodiment, anti-slip rings are provided on the lower surfaces of the first lower base, the second lower base, the third lower base, and the fourth lower base.

[0031] In this embodiment, the right guide block 18 and the outer convex tube 19, and the left guide block 15 and the outer side of one of the first left hinged tubes 12 are fixedly connected by bolts.

[0032] The working process and principle of this example are as follows: when in use, the folding chair is unfolded, and the arc-shaped supports of the left and right waist backs move along their corresponding guide blocks to prop it up; when storing it, it can be folded.

[0033] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A folding lumbar chair, comprising a backrest and a seat support, wherein the backrest and the seat support are connected on both sides by a first left hinge tube and a first right hinge tube respectively, the backrest comprises a left backrest tube and a right backrest tube, the left backrest tube and the right backrest tube are connected by a second hinge tube, the upper sliding sleeve of the left backrest tube is provided with a first upper base, the lower end of which is fixed with a first lower base, the upper sliding sleeve of the right backrest tube is provided with a second upper base, the lower end of which is fixed with a second lower base, the four ends of the second hinge tube are respectively hinged on the first upper base, the first lower base, the second upper base and the second lower base, the seat support comprises a left seat support tube, The right-seat support tube, the left-seat support tube and the right-seat support tube are cross-hinged, the upper sliding sleeve of the left-seat support tube is provided with a third upper base, and the lower end is fixed with a third lower base, the upper sliding sleeve of the right-seat support tube is provided with a fourth upper base, and the lower end is fixed with a fourth lower base, the two upper ends of the first left hinged tube are respectively hinged on the third upper base and the first upper base, the two lower ends of the first left hinged tube are respectively hinged on the first lower base and the fourth lower base, the two upper ends of the first right hinged tube are respectively hinged on the fourth upper base and the second upper base, and the two lower ends of the first right hinged tube are respectively hinged on the second lower base and the third lower base, characterized in that: A left waist back is provided between the left chair back tube and one of the first left hinged tubes, and a right waist back is provided between the right chair back tube and the connecting piece. The left waist back comprises a left arc-shaped support and a left guide block. Both ends of the left arc-shaped support are fixed to the left chair back tube through a left fixed tube, and the first upper base is arranged between the two ends of the left arc-shaped support. A left guide block is fixed to the outside of one of the tubes of the first left hinged tube, and a left guide groove for sliding the left arc-shaped support is provided on the outside of the left guide block. The left arc-shaped support moves along the left guide groove. The right waist and back include a right arc-shaped support and a right guide block. Both ends of the right arc-shaped support are fixed to the right chair back tube through a right fixed tube, and the second upper base is arranged between the two ends of the right arc-shaped support. The connecting part includes an outer sleeve and an outer convex tube that are integrally arranged. The lower end of the outer sleeve is sleeved on the outside of the lower end of one of the tubes of the first right hinged tube, and its lower end is hinged together with the lower end of one of the tubes of the first right hinged tube in the third lower base. The outer convex tube is arranged on the outside of the upper end of one of the tubes of the first right hinged tube, and there is a gap between it and the outside of one of the tubes of the first right hinged tube. The upper end of the outer convex tube is hinged in the second upper base, and a right guide block is fixed on the outside of the outer convex tube, and a right guide groove for sliding of the right arc-shaped support is provided on the outside of the right guide block, and the right arc-shaped support moves along the right guide groove.

2. A folding lumbar chair according to claim 1, characterized in that: The outer sleeve and one tube of the first right hinged tube are hingedly arranged together with the other tube of the first right hinged tube.

3. The folding lumbar chair according to claim 1, characterized in that: The lower surfaces of the first lower base, the second lower base, the third lower base and the fourth lower base are all provided with anti-slip rings.

4. The folding lumbar chair according to claim 1, characterized in that: The right guide block and the outer convex tube, and the left guide block and the outer side of one of the tubes of the first left hinged tube are fixedly connected by bolts.

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