Telescopic table leg

Abstract

The utility model discloses a telescopic table leg, which belongs to the technical field of table legs and comprises a first hollow rod, a second hollow rod and a third hollow rod, the upper end of the second hollow rod is slidably arranged in the lower end of the first hollow rod, and the upper end of the third hollow rod is slidably arranged in the lower end of the second hollow rod. A first friction assembly used for forming friction with the inner wall of the first hollow rod is fixed to the upper end of the second hollow rod, and a second friction assembly used for forming friction with the inner wall of the second hollow rod is fixed to the upper end of the third hollow rod. The height of the table leg can be adjusted by rotating the second hollow rod or the third hollow rod, the adjusting range is wide, adjustment can be fast, and the appearance is neat.

Description

Technical Field

[0001] The utility model belongs to the technical field of table legs, in particular to a telescopic table leg. Background Art

[0002] Table supports are mainly in two forms: fixed or telescopic. Fixed table supports have a fixed height, while telescopic table supports can adjust the corresponding height. Telescopic table legs are the most common type of table supports.

[0003] A search revealed patent application number CN202222993789.8, which proposes an IGT telescopic table leg comprising a first and second body. The first and second bodies are hollow tubular structures, with the second body inserted into the first body. The first body is provided with through-holes spaced longitudinally, and the end of the first body is fitted with a fixed end. A rectangular mating block is provided on the first body adjacent to the end of the first body, with a sloped angle toward the first body. The fixed end is a hollow cylindrical shape, which is inserted into the end of the first body. A foot block is embedded in the bottom of the second body, with a hollow fixing post fixed to the upper end. An annular fixing sleeve is provided at regular intervals around the outer circumference of the fixing post. This utility model uses through-hole positioning to achieve three height adjustments, resulting in a limited range of height adjustment. Furthermore, the through-hole design is unsightly and inconvenient to operate.

[0004] For this reason, the utility model proposes a telescopic table leg. Utility Model Content

[0005] The purpose of the present utility model is to provide a telescopic table leg in order to solve at least one technical problem raised in the background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a telescopic table leg, comprising a first hollow rod, a second hollow rod and a third hollow rod, the upper end of the second hollow rod being slidably arranged inside the lower end of the first hollow rod, the upper end of the third hollow rod being slidably arranged inside the lower end of the second hollow rod, the upper end of the second hollow rod being fixed with a first friction component for forming friction with the inner wall of the first hollow rod, and the upper end of the third hollow rod being fixed with a second friction component for forming friction with the inner wall of the second hollow rod.

[0007] Furthermore, the first friction assembly includes a first screw, a first spring, a first expansion piece and a first extrusion piece. A first thread groove is provided in the middle of the first extrusion piece. The lower end of the first screw is movable through the first expansion piece and is threadedly connected in the first thread groove. A first spring is sleeved on the first screw, and the first extrusion piece is fixed to the upper end of the second hollow rod.

[0008] Furthermore, the second friction assembly includes a second screw, a second spring, a second expansion piece and a second extrusion piece. A second thread groove is provided in the middle of the second extrusion piece. The lower end of the second screw is movable through the second expansion piece and is threadedly connected in the second thread groove. A second spring is sleeved on the second screw, and the second extrusion piece is fixed to the upper end of the third hollow rod.

[0009] Furthermore, a threaded connector is fixed to the upper end of the first hollow rod for connection to the table frame.

[0010] Furthermore, a pad is fixed to the lower end of the third hollow rod.

[0011] Furthermore, a first bushing is fixed to the lower end of the first hollow rod, and a second bushing is fixed to the lower end of the second hollow rod.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] The utility model can realize height adjustment of the table legs by rotating the second hollow rod or the third hollow rod, has a wide adjustment range, can be adjusted quickly, and has a neat appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a telescopic table leg.

[0015] Figure 2 for Figure 1 main view.

[0016] Figure 3 for Figure 2 Cross-section view in the AA direction.

[0017] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0018] Figure 5 for Figure 3 A partial enlarged view of point C in the middle.

[0019] Figure 6 This is a schematic structural diagram of the first friction component in the present invention.

[0020] Figure 7 for Figure 6 Schematic diagram of the structure without the first expansion member.

[0021] Figure 8 It is a structural schematic diagram of the second friction component in the present utility model.

[0022] Figure 9 for Figure 8 Schematic diagram of the structure without the second expansion member.

[0023] Figure 10 It is a structural schematic diagram of the first bushing in the utility model.

[0024] Figure 11 It is a structural schematic diagram of the second bushing in the utility model.

[0025] Legend:

[0026] 101. First hollow rod; 1011. First bushing; 102. Second hollow rod; 1021. Second bushing; 103. Third hollow rod; 104. Spacer; 105. Threaded connector; 106. First friction assembly; 1061. First screw; 1062. First spring; 1063. First expansion member; 1064. First extrusion member; 107. Second friction assembly; 1071. Second screw; 1072. Second spring; 1073. Second expansion member; 1074. Second extrusion member. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1-11 The utility model provides a technical solution: a telescopic table leg, comprising a first hollow rod 101, a second hollow rod 102 and a third hollow rod 103, the upper end of the second hollow rod 102 is slidably arranged inside the lower end of the first hollow rod 101, the upper end of the third hollow rod 103 is slidably arranged inside the lower end of the second hollow rod 102, the upper end of the second hollow rod 102 is fixed with a first friction component 106 for forming friction with the inner wall of the first hollow rod 101, and the upper end of the third hollow rod 103 is fixed with a second friction component 107 for forming friction with the inner wall of the second hollow rod 102.

[0029] In a specific embodiment of the present invention, the first friction assembly 106 includes a first screw 1061, a first spring 1062, a first expansion piece 1063 and a first extrusion piece 1064. A first thread groove is provided in the middle of the first extrusion piece 1064. The lower end of the first screw 1061 is movable through the first expansion piece 1063 and is threadedly connected in the first thread groove. The first spring 1062 is sleeved on the first screw 1061. The first extrusion piece 1064 is fixed to the upper end of the second hollow rod 102. When in use, the second hollow rod 102 is rotated to make the first extrusion piece 1064 move downward, thereby preventing the first expansion piece 106 from being pressed. 3 is extruded, at this time, the friction between the first expansion member 1063 and the first hollow rod 101 is reduced, and the height of the second hollow rod 102 can be adjusted at this time. After the position is adjusted, the second hollow rod 102 is rotated in the opposite direction to move the first extrusion member 1064 upward, thereby squeezing the first expansion member 1063. At this time, the friction between the first expansion member 1063 and the first hollow rod 101 is increased, and the position is fixed. It is worth noting that the first screw 1061 and the first expansion member 1063 will not rotate, and can only move along the length direction of the first hollow rod 101. A limited guide groove can be set on the inner wall of the first hollow rod 101 and the first expansion member 1063.

[0030] In a specific embodiment of the present invention, the second friction assembly 107 includes a second screw 1071, a second spring 1072, a second expansion piece 1073 and a second extrusion piece 1074. A second thread groove is provided in the middle of the second extrusion piece 1074. The lower end of the second screw 1071 is movable through the second expansion piece 1073 and is threadedly connected in the second thread groove. The second spring 1072 is sleeved on the second screw 1071. The second extrusion piece 1074 is fixed to the upper end of the third hollow rod 103. When in use, the third hollow rod 103 is rotated to make the second extrusion piece 1074 move downward, thereby preventing the second expansion piece 107 from being pressed. 3 is extruded, at this time, the friction between the second expansion member 1073 and the second hollow rod 102 is reduced, and the height of the third hollow rod 103 can be adjusted. After the position is adjusted, the third hollow rod 103 is rotated in the opposite direction to move the second extruding member 1074 upward, thereby squeezing the second expansion member 1073. At this time, the friction between the second expansion member 1073 and the second hollow rod 102 is increased, and the position is fixed. It is worth noting that the second screw 1071 and the second expansion member 1073 will not rotate, but can only move along the length direction of the second hollow rod 102. A limited guide groove can be provided on the inner wall of the second hollow rod 102 and the second expansion member 1073.

[0031] In a specific embodiment of the present invention, a threaded connector 105 is fixed to the upper end of the first hollow rod 101 for connecting to a table frame.

[0032] In a specific embodiment of the present invention, a cushion block 104 is fixed to the lower end of the third hollow rod 103 .

[0033] In a specific embodiment of the present invention, a first bushing 1011 is fixed to the lower end of the first hollow rod 101 , and a second bushing 1021 is fixed to the lower end of the second hollow rod 102 .

[0034] When the present invention is in use, the second hollow rod 102 is rotated to make the first extrusion member 1064 move downward, thereby not squeezing the first expansion member 1063. At this time, the friction between the first expansion member 1063 and the first hollow rod 101 is reduced, and the height of the second hollow rod 102 can be adjusted. After the position is adjusted, the second hollow rod 102 is rotated in the opposite direction to make the first extrusion member 1064 move upward, thereby squeezing the first expansion member 1063. At this time, the friction between the first expansion member 1063 and the first hollow rod 101 is increased, and the position is fixed. When further height adjustment is needed, rotate the third hollow rod 103 to make the second extrusion piece 1074 move downward, and then stop squeezing the second expansion piece 1073. At this time, the friction between the second expansion piece 1073 and the second hollow rod 102 is reduced. At this time, the height of the third hollow rod 103 can be adjusted. After the position is adjusted, rotate the third hollow rod 103 in the opposite direction to make the second extrusion piece 1074 move upward, and then squeeze the second expansion piece 1073. At this time, the friction between the second expansion piece 1073 and the second hollow rod 102 is increased, and the position is fixed.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A telescopic table leg, characterized by: The invention comprises a first hollow rod (101), a second hollow rod (102) and a third hollow rod (103), wherein the upper end of the second hollow rod (102) is slidably arranged inside the lower end of the first hollow rod (101), and the upper end of the third hollow rod (103) is slidably arranged inside the lower end of the second hollow rod (102). The upper end of the second hollow rod (102) is fixed with a first friction component (106) for forming friction with the inner wall of the first hollow rod (101), and the upper end of the third hollow rod (103) is fixed with a second friction component (107) for forming friction with the inner wall of the second hollow rod (102).

2. The telescopic table leg according to claim 1, characterized in that: The first friction assembly (106) includes a first screw (1061), a first spring (1062), a first expansion piece (1063) and a first extrusion piece (1064). A first thread groove is provided in the middle of the first extrusion piece (1064). The lower end of the first screw (1061) is movable through the first expansion piece (1063) and is threadedly connected to the first thread groove. The first spring (1062) is sleeved on the first screw (1061). The first extrusion piece (1064) is fixed to the upper end of the second hollow rod (102).

3. The telescopic table leg according to claim 1, characterized in that: The second friction assembly (107) includes a second screw (1071), a second spring (1072), a second expansion piece (1073) and a second extrusion piece (1074). A second thread groove is provided in the middle of the second extrusion piece (1074). The lower end of the second screw (1071) is movable through the second expansion piece (1073) and is threadedly connected to the second thread groove. The second spring (1072) is sleeved on the second screw (1071). The second extrusion piece (1074) is fixed to the upper end of the third hollow rod (103).

4. The telescopic table leg according to claim 1, characterized in that: A threaded connector (105) is fixed to the upper end of the first hollow rod (101) for connection with the table frame.

5. The telescopic table leg according to claim 1, characterized in that: A cushion block (104) is fixed to the lower end of the third hollow rod (103).

6. The telescopic table leg according to claim 1, characterized in that: A first bushing (1011) is fixed to the lower end of the first hollow rod (101), and a second bushing (1021) is fixed to the lower end of the second hollow rod (102).

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