Height-adjustable four-leg chair

Abstract

The utility model provides a height-adjustable four-leg chair, and belongs to the technical field of household chairs. The height-adjustable four-leg chair comprises a connecting assembly and a supporting assembly, the connecting assembly comprises supporting legs, a connecting piece, an adjusting bidirectional lead screw and a seat cushion, the connecting piece is arranged between the two supporting legs, the supporting assembly comprises an external thread head and an internal thread sleeve, the external thread head is fixedly connected to the bottom ends of the supporting legs, and the internal thread sleeve is fixedly connected to the bottom ends of the supporting legs. The supporting legs, the connecting pieces, the adjusting two-way lead screws and the seat cushions are arranged, the two sets of supporting legs are connected through the adjusting two-way lead screws, interval adjusting supporting can be conducted, and the seat cushions of various models can be replaced and installed; the length of the sleeve on the supporting leg is adjusted by utilizing threaded rotation and axial movement of the internal threaded sleeve, so that the purpose of adjusting the height of the chair is achieved, and the practicability is improved.

Description

Technical Field

[0001] The present application relates to the field of household chairs, and in particular to a four-legged chair with adjustable height. Background Art

[0002] Common chairs are developed in various shapes and functions according to different design concepts. In the creation of chair functions, there are four-legged chairs for general use, desks and chairs for classrooms, and armchairs with armrests. However, the design and production of related chairs are all independent of each other, so the industry must manufacture and stock up on multiple styles to meet the market's consumer demand.

[0003] Currently, four-legged chairs usually support the top seat cushion through the support frames of the four legs, but the lengths of the four legs are often fixed, making the height of the chair fixed and difficult to adjust, and the support frame used to connect the seat cushion is fixed in size and difficult to adjust to accommodate seat cushions of different sizes. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a four-legged chair with adjustable height, aiming to improve the problems raised in the above background technology.

[0005] An embodiment of the present application provides a height-adjustable four-legged chair including a connecting assembly and a supporting assembly.

[0006] The connecting assembly includes a supporting leg, a connecting piece, an adjustable bidirectional screw rod and a seat cushion. The connecting piece is arranged between the two supporting legs. Both ends of the adjustable bidirectional screw rod are respectively threadedly connected to the inside of the two supporting legs. The seat cushion is arranged on the top of the supporting leg and connected to the connecting piece.

[0007] The support assembly includes an external thread head and an internal thread sleeve. The external thread head is fixedly connected to the bottom end of the support leg, and the internal thread sleeve is threadedly sleeved on the surface of the external thread head.

[0008] In a specific embodiment, the connecting member includes a supporting tube and a connecting bolt, the end of the supporting tube is fixedly connected to the supporting leg, and the connecting bolt passes through the supporting tube and is connected to the seat cushion.

[0009] In the above implementation process, a support tube and a connecting bolt are provided, and the two support legs are connected by the support tube. At the same time, the support tube contacts the support cushion, and the connecting bolt is used to connect and fix the cushion.

[0010] In a specific implementation, the support tube is provided with a plurality of mounting holes, and the connecting bolts pass through the mounting holes.

[0011] In the above implementation process, by providing a plurality of mounting holes, the reserved holes on different seat cushions can be adapted and installed.

[0012] In a specific implementation manner, a thread groove is formed at one end of the support leg, and the adjusting bidirectional screw is threadedly connected to the thread groove.

[0013] In the above implementation process, a thread groove is provided to adjust the end of the bidirectional screw rod to be threadedly connected to the inner wall of the support leg.

[0014] In a specific implementation, the adjusting bidirectional screw rod is fixedly sleeved with a rotating ring, and the surface of the rotating ring is provided with anti-slip grooves.

[0015] In the above implementation process, by providing a rotating ring and anti-skid patterns, the rotating ring and the anti-skid patterns are conveniently rotated to drive and adjust the rotation of the bidirectional screw rod, which is easy to operate.

[0016] In a specific embodiment, the external thread head is integrally formed at the bottom end of the supporting leg.

[0017] In the above implementation process, the external thread head and the supporting leg are integrally formed, and the integrally formed design has high structural strength.

[0018] In a specific embodiment, the diameter of the support leg is smaller than the diameter of the external thread head, and the diameter of the top port of the internal thread sleeve is smaller than the diameter of the external thread head.

[0019] In the above implementation process, by setting the diameter of the support leg smaller than the diameter of the external thread head and the top diameter of the internal thread sleeve smaller than the diameter of the external thread head, the internal thread sleeve can be prevented from slipping off the support leg.

[0020] In a specific implementation manner, a curved anti-skid pad is provided at the bottom end of the internally threaded sleeve, and scale lines are provided on the surface of the supporting leg.

[0021] In the above implementation process, the arc-shaped anti-slip pad can adapt to different top surface conditions for stable contact support, and the scale line is convenient for adjusting the appropriate height according to needs.

[0022] Beneficial effects: The present application provides a four-legged chair with adjustable height. By setting support legs, connecting parts, adjustable two-way screws and seat cushions, and connecting two sets of support legs using the adjustable two-way screws, the spacing support can be adjusted, and various types of seat cushions can be replaced and installed. By setting an external thread head and an internal thread sleeve, the internal thread sleeve can be rotated and moved axially to adjust the length of the sleeve on the support leg, thereby achieving the purpose of adjusting the chair height and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of a four-legged chair with adjustable height provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the support leg structure provided for an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a bidirectional screw rod structure for adjusting the screw rod provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the support assembly structure provided for an embodiment of the present application.

[0028] In the figure: 100-connecting assembly; 110-supporting leg; 111-threaded groove; 120-connecting piece; 121-supporting tube; 1211-mounting hole; 122-connecting bolt; 130-adjusting two-way screw rod; 131-rotating ring; 140-seat cushion; 200-supporting assembly; 210-external thread head; 220-internal thread sleeve; 240-arc anti-slip pad. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0030] See also Figure 1-Figure 4 The present application provides a height-adjustable four-legged chair including a connecting assembly 100 and a supporting assembly 200 .

[0031] See also Figure 1 , 2 and 3, the connecting assembly 100 includes a supporting leg 110, a connecting member 120, an adjustable bidirectional screw rod 130 and a seat cushion 140, the connecting member 120 is arranged between the two supporting legs 110, both ends of the adjustable bidirectional screw rod 130 are respectively threadedly connected to the inside of the two supporting legs 110, and the seat cushion 140 is arranged on the top of the supporting leg 110 and connected to the connecting member 120.

[0032] Among them, the connecting member 120 includes a support tube 121 and a connecting bolt 122. The end of the support tube 121 is fixedly connected to the support leg 110. The connecting bolt 122 passes through the support tube 121 and is connected to the seat cushion 140. By setting the support tube 121 and the connecting bolt 122, the support tube 121 is used to connect the two support legs 110, and at the same time the support tube 121 contacts the support seat cushion 140, and then the connecting bolt 122 is used to connect and fix the seat cushion 140.

[0033] In a specific implementation, the support tube 121 is provided with a plurality of mounting holes 1211 , and the connecting bolts 122 pass through the mounting holes 1211 . By providing a plurality of mounting holes 1211 , the reserved holes on different seat cushions 140 can be adapted and installed.

[0034] In a specific implementation, a thread groove 111 is provided at one end of the support leg 110, and the adjusting bidirectional screw rod 130 is threadedly connected to the thread groove 111. By setting the thread groove 111, the end of the adjusting bidirectional screw rod 130 is threadedly connected to the inner wall of the support leg 110.

[0035] In this embodiment, the adjusting bidirectional screw rod 130 is fixedly sleeved with a rotating ring 131, and the surface of the rotating ring 131 is provided with anti-slip grooves. By providing the rotating ring 131 and the anti-slip grooves, the rotating ring 131 and the anti-slip grooves can be used to conveniently rotate and drive the adjusting bidirectional screw rod 130 to rotate, which is easy to operate.

[0036] Specifically, the external thread head 210 is integrally formed at the bottom end of the supporting leg 110 , and the external thread head 210 and the supporting leg 110 are an integrally formed structure, and the integrally formed design has high structural strength.

[0037] See also Figure 1 , 2 4. The support assembly 200 includes an external thread head 210 and an internal thread sleeve 220. The external thread head 210 is fixedly connected to the bottom end of the support leg 110, and the internal thread sleeve 220 is threadedly sleeved on the surface of the external thread head 210.

[0038] It should be noted that the diameter of the support leg 110 is smaller than the diameter of the external thread head 210, and the top diameter of the internal thread sleeve 220 is smaller than the diameter of the external thread head 210. By setting the diameter of the support leg 110 to be smaller than the diameter of the external thread head 210 and the top diameter of the internal thread sleeve 220 to be smaller than the diameter of the external thread head 210, the internal thread sleeve 220 can be prevented from slipping off the support leg 110.

[0039] In a specific implementation scheme, a curved anti-skid pad 240 is provided at the bottom end of the internal threaded sleeve 220. The curved anti-skid pad 240 can adapt to different top surface conditions for stable contact support, and the scale line is convenient for adjusting the appropriate height according to needs.

[0040] The working principle of the height-adjustable four-legged chair is as follows: when the height needs to be adjusted during use, the internal threaded sleeve 220 is rotated, and the internal threaded sleeve 220 is rotated and moved axially along the external threaded head 210, thereby adjusting the length of the sleeve on the support leg 110, thereby achieving the purpose of adjusting the height of the chair, and the adjusted height is judged by the scale lines on the surface of the support leg 110. When the seat cushion 140 is disassembled and replaced with different models, the connecting bolt 122 is first rotated and removed, and then the rotating ring 131 and the anti-slip pattern are rotated according to the size of the seat cushion 140. The rotating ring 131 drives the adjusting bidirectional screw rod 130 to rotate, and the adjusting bidirectional screw rod 130 rotates and drives the two supporting legs 110 to move. The two supporting legs 110 move axially along the adjusting bidirectional screw rod 130 to adjust the spacing to adapt to the seat cushion 140, and can maintain the stable connection of the four supporting legs 110, and the structural strength is high. At the same time, the multiple mounting holes 1211 on the support tube 121 can be adapted and installed to the reserved holes on different seat cushions 140.

[0041] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A four-legged chair with adjustable height, characterized in that: include A connecting assembly (100), the connecting assembly (100) comprising a supporting leg (110), a connecting piece (120), an adjustable bidirectional screw rod (130) and a seat cushion (140), the connecting piece (120) being arranged between the two supporting legs (110), the two ends of the adjustable bidirectional screw rod (130) being respectively threadedly connected to the inside of the two supporting legs (110), and the seat cushion (140) being arranged on the top of the supporting leg (110) and connected to the connecting piece (120); A support assembly (200), the support assembly (200) comprising an external thread head (210) and an internal thread sleeve (220), the external thread head (210) being fixedly connected to the bottom end of the support leg (110), and the internal thread sleeve (220) being threadedly sleeved on the surface of the external thread head (210).

2. A height-adjustable four-legged chair according to claim 1, characterized in that: The connecting member (120) comprises a supporting tube (121) and a connecting bolt (122); the end of the supporting tube (121) is fixedly connected to the supporting leg (110); and the connecting bolt (122) passes through the supporting tube (121) and is connected to the seat cushion (140).

3. A height-adjustable four-legged chair according to claim 2, characterized in that: The support tube (121) is provided with a plurality of mounting holes (1211), and the connecting bolts (122) pass through the mounting holes (1211).

4. The height-adjustable four-legged chair according to claim 1, characterized in that: A thread groove (111) is formed at one end of the support leg (110), and the adjusting bidirectional screw rod (130) is threadedly connected to the thread groove (111).

5. The height-adjustable four-legged chair according to claim 1, characterized in that: The adjusting bidirectional screw rod (130) is fixedly sleeved with a rotating ring (131), and the surface of the rotating ring (131) is provided with anti-slip grooves.

6. The height-adjustable four-legged chair according to claim 1, characterized in that: The external thread head (210) is integrally formed at the bottom end of the supporting leg (110).

7. The height-adjustable four-legged chair according to claim 1, characterized in that: The diameter of the support leg (110) is smaller than the diameter of the external thread head (210), and the top diameter of the internal thread sleeve (220) is smaller than the diameter of the external thread head (210).

8. The height-adjustable four-legged chair according to claim 1, characterized in that: A curved anti-skid pad (240) is provided at the bottom end of the internally threaded sleeve (220), and scale lines are provided on the surface of the supporting leg (110).

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