A foot for adjusting the height of a sofa

Abstract

The utility model discloses a support leg for adjusting the height of a sofa, comprising a mounting plate, a threaded sleeve, an adjusting rod and a bottom plate. The threaded sleeve is fixedly mounted at the center of the lower end of the mounting plate and is vertically arranged downward. At least four mounting holes are evenly distributed around the center of the mounting plate. An internal thread is arranged on the inner wall of the threaded sleeve. The adjusting rod matches the threaded sleeve. The adjusting rod is vertically arranged. The upper end of the adjusting rod has a threaded portion inserted into the threaded sleeve. The surface of the threaded portion is provided with an external thread matched with the internal thread. A mounting groove is provided at the center of the upper end of the bottom plate. The lower end of the adjusting rod is mounted in the mounting groove through a bearing for rotation. An adjusting block is fixedly arranged on the adjusting rod. The adjusting block is located between the bearing and the threaded portion. Due to the rotational connection between the adjusting rod and the bottom plate, the friction between the bottom plate and the ground will not affect the rotation of the adjusting rod, thereby reducing the force required for the rotation of the adjusting rod, and the adjusting rod can be rotated more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of sofa legs, in particular to a leg which is convenient for adjusting the height of a sofa. Background Art

[0002] In order to meet the different needs of different families, some sofas in the prior art can be adjusted to different heights by adjusting the legs. Usually, conventional height-adjustable legs include a mounting plate fixedly mounted on the lower end of the sofa, a threaded sleeve facing downward is provided at the center of the lower end of the mounting plate, a threaded rod is matched and connected inside the threaded sleeve, and the lower end of the threaded rod extends out of the threaded sleeve and is fixedly connected to a foot pad supported on the ground. By rotating the threaded rod and utilizing the threaded connection between the threaded rod and the threaded sleeve, the threaded sleeve is driven to lift the sofa to change its height.

[0003] However, when the threaded rod in the prior art rotates, it is necessary to drive the fixedly connected foot pad to rotate together, but the foot pad is supported on the ground and pressed by the gravity of the sofa. Therefore, the friction between the foot pad and the ground is large, so that a large force is required to rotate the threaded rod, which makes it difficult to rotate the threaded rod. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a support leg for facilitating the adjustment of the height of a sofa.

[0005] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0006] A support leg for adjusting the height of a sofa comprises a mounting plate, a threaded sleeve, an adjusting rod and a bottom plate. The threaded sleeve is fixedly mounted at the center of the lower end of the mounting plate and is vertically arranged downward. At least four mounting holes are evenly distributed around the center of the mounting plate. An internal thread is arranged on the inner wall of the threaded sleeve. The adjusting rod matches the threaded sleeve. The adjusting rod is vertically arranged. The upper end of the adjusting rod has a threaded portion inserted into the threaded sleeve. The surface of the threaded portion is provided with an external thread adapted to the internal thread. A mounting groove is provided at the center of the upper end of the bottom plate. The lower end of the adjusting rod is mounted in the mounting groove through a bearing for rotation. An adjusting block is fixedly arranged on the adjusting rod. The adjusting block is located between the bearing and the threaded portion.

[0007] According to a preferred technical solution, a first arc surface groove is formed on the lower end section of the adjusting rod, a second arc surface groove corresponding to the first arc surface groove is formed on the bottom of the mounting groove, and a ball is filled between the first arc surface groove and the second arc surface groove.

[0008] According to a preferred technical solution, the horizontal cross section of the adjusting block is polygonal, and the adjusting rod is arranged through the center of the adjusting block.

[0009] According to a preferred technical solution, the upper end of the mounting plate is protruding upward and is provided with at least two positioning posts, and the at least two positioning posts are evenly distributed around the center of the mounting plate.

[0010] According to a preferred technical solution, a silicone pad is glued to the lower end of the bottom plate.

[0011] Compared with the prior art, the beneficial effects are:

[0012] The utility model has a simple structure and is easy to use. The upper end of the threaded sleeve is fixedly installed on the lower end of the sofa through the mounting plate, the upper end of the adjusting rod extends into the threaded sleeve and is threadedly connected to the threaded sleeve, and the lower end of the adjusting rod is rotatably installed on the bottom plate through a bearing, and the bottom plate is supported on the ground. Therefore, when the adjusting rod is rotated to adjust the height of the supporting foot, due to the rotational connection between the adjusting rod and the bottom plate, the friction between the bottom plate and the ground will not affect the rotation of the adjusting rod, thereby reducing the force required for the rotation of the adjusting rod, and the adjusting rod can be rotated more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0014] Figure numerals: 1. mounting plate; 2. threaded sleeve; 3. adjusting rod; 4. adjusting block; 5. bottom plate; 6. mounting groove; 7. bearing; 8. first arc groove; 9. second arc groove; 10. ball bearing; 11. silicone pad; 12. positioning column. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] A support leg for adjusting the height of a sofa comprises a mounting plate 1, a threaded sleeve 2, an adjusting rod 3 and a base plate 5. The mounting plate 1 is used for being fixedly connected to the lower end of the sofa, the threaded sleeve 2 cooperates with the adjusting rod 3 to adjust the height, and the base plate 5 is used for being supported on the ground.

[0017] The threaded sleeve 2 is fixedly installed at the center of the lower end of the mounting plate 1 and is vertically arranged downward. The mounting plate 1 has at least four mounting holes evenly distributed around its center. When the mounting plate 1 is installed at the lower end of the sofa, it is locked at the lower end of the sofa by passing bolts through the mounting holes.

[0018] The inner wall of the threaded sleeve 2 is provided with an internal thread, the adjusting rod 3 matches the threaded sleeve 2, the adjusting rod 3 is vertically arranged, the upper end of the adjusting rod 3 has a threaded portion inserted into the threaded sleeve 2, and the surface of the threaded portion is provided with an external thread that matches the internal thread.

[0019] A mounting groove 6 is provided at the center of the upper end of the base plate 5, and the lower end of the adjusting rod 3 is mounted in the mounting groove 6 through a bearing 7 for rotation. An adjusting block 4 is fixed on the adjusting rod 3, and the adjusting block 4 is located between the bearing 7 and the threaded portion. The adjusting rod 3 is rotated by rotating the adjusting block 4 by hand or with a tool.

[0020] The upper end of the threaded sleeve is fixedly mounted on the lower end of the sofa through the mounting plate 1, the upper end of the adjusting rod 3 is inserted into the threaded sleeve and is threadedly connected with the threaded sleeve, and the lower end of the adjusting rod 3 is rotatably mounted on the bottom plate 5 through the bearing 7, and the bottom plate 5 is supported on the ground. Therefore, when the adjusting rod 3 is rotated to adjust the height of the support foot, due to the rotational connection between the adjusting rod 3 and the bottom plate 5, the friction between the bottom plate 5 and the ground will not affect the rotation of the adjusting rod 3, thereby reducing the force required for the rotation of the adjusting rod 3, and the adjusting rod 3 can be rotated more easily. In addition, the internal thread and the external thread have a smaller inclination angle and a smaller thread pitch, thereby reducing the torque of the rotation of the adjusting rod.

[0021] According to a preferred technical solution, a first arc surface groove 8 is formed on the lower end section of the adjusting rod 3, a second arc surface groove 9 corresponding to the first arc surface groove 8 is formed on the bottom of the mounting groove 6, and a ball 10 is filled between the first arc surface groove 8 and the second arc surface groove 9.

[0022] The ball 10 is movably arranged between the first arc surface groove 8 and the second arc surface groove 9, the lower end of the ball 10 is supported in the second arc surface groove 9, and the upper end of the ball 10 is pressed in the first arc surface groove 8, so that the lower end of the adjusting rod 3 is pressed against the bottom of the mounting groove 6 through the ball 10; usually, in order to enable the adjusting rod 3 to withstand greater pressure, the adjusting rod 3 needs to be pressed against the bottom of the mounting groove 6 to obtain support, but if the lower end of the adjusting rod 3 is directly pressed against the bottom of the mounting groove 6, sliding friction will be generated with the bottom of the mounting groove 6 when the adjusting rod 3 rotates, which will not only increase the resistance to rotation of the adjusting rod 3, but also cause wear to the bottom of the mounting groove 6 and the lower end of the adjusting rod 3. In the utility model, due to the movable arrangement of the ball 10, the lower end of the adjusting rod 3 will not directly contact the bottom of the mounting groove 6 to generate sliding friction, thereby reducing the resistance to rotation of the adjusting rod 3 and reducing the wear of the lower end of the rotating rod and the bottom of the mounting groove 6.

[0023] According to a preferred technical solution, the horizontal cross section of the adjusting block 4 is polygonal, and the adjusting rod 3 is arranged through the center of the adjusting block 4 .

[0024] By setting it into a polygonal shape, it is easy to hold or rotate with tools without slipping.

[0025] According to a preferred technical solution, at least two positioning posts 12 are protruding upward from the upper end of the mounting plate 1 , and the at least two positioning posts 12 are evenly distributed around the center of the mounting plate 1 .

[0026] Correspondingly, a positioning hole corresponding to the positioning column 12 is opened at the bottom of the sofa. When the legs are installed, the sofa is usually laid down with its lower end standing on its side. When the legs are installed in this way, the legs will fall downward due to gravity, so it is necessary to hold the legs with another hand, which is troublesome. In the utility model, the positioning columns 12 on the mounting plate 1 are inserted into the positioning holes on the sofa before the bolts are tightened, which can prevent the legs from falling downward.

[0027] According to a preferred technical solution, a silicone pad 11 is glued to the lower end of the bottom plate 5 .

[0028] The silicone pad 11 is used to prevent the bottom plate 5 from making hard contact with the ground, and the sofa is displaced during use by means of the friction between the silicone pad 11 and the ground.

[0029] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A support leg for adjusting the height of a sofa, characterized in that: It comprises a mounting plate (1), a threaded sleeve (2), an adjusting rod (3) and a base plate (5); The threaded sleeve (2) is fixedly mounted at the center of the lower end of the mounting plate (1) and is vertically arranged downwards. The mounting plate (1) has at least four mounting holes evenly distributed around its center. The inner wall of the threaded sleeve (2) is provided with an internal thread. The adjusting rod (3) matches the threaded sleeve (2), the adjusting rod (3) is vertically arranged, the upper end of the adjusting rod (3) has a threaded portion inserted into the threaded sleeve (2), and the surface of the threaded portion is provided with an external thread that matches the internal thread; A mounting groove (6) is provided at the center of the upper end of the base plate (5), and the lower end of the adjusting rod (3) is mounted in the mounting groove (6) via a bearing (7) for rotation; An adjusting block (4) is fixedly provided on the adjusting rod (3), and the adjusting block (4) is located between the bearing (7) and the threaded portion.

2. The foot for adjusting the height of a sofa according to claim 1, characterized in that: The lower end section of the adjusting rod (3) is provided with a first arc surface groove (8), the bottom of the mounting groove (6) is provided with a second arc surface groove (9) corresponding to the first arc surface groove (8), and a ball (10) is filled between the first arc surface groove (8) and the second arc surface groove (9).

3. The foot for adjusting the height of a sofa according to claim 1, characterized in that: The horizontal cross section of the adjusting block (4) is polygonal, and the adjusting rod (3) is arranged through the center of the adjusting block (4).

4. The foot for adjusting the height of a sofa according to claim 1, characterized in that: The upper end of the mounting plate (1) is protruding upward and is provided with at least two positioning columns (12), and the at least two positioning columns (12) are evenly distributed around the center of the mounting plate (1).

5. The support leg for adjusting the height of a sofa as claimed in claim 1, characterized in that: A silicone pad (11) is glued to the lower end of the bottom plate (5).

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