Box-spring assembly

Abstract

A box-spring assembly includes two frames, a resilient member, a plurality of lateral springs, and a plurality of clips. The frames are spaced apart from each other, and each of the frames has a looped lateral frame rod. The resilient member includes an array of spring coil units disposed between the frames, and a plurality of connecting elements connecting the spring coil units to each other. Each of the lateral springs is connected between the looped lateral frame rods so as to reinforce the looped lateral frame rods. The clips connect the spring coil units and the lateral springs to the looped lateral frame rods.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which:

FIG. 1 is a fragmentary perspective view of a conventional box-spring assembly;

FIG. 2 is a fragmentary perspective view of the preferred embodiment of a box-spring assembly according to this invention;

FIG. 3 is a fragmentary schematic side view of the preferred embodiment;

FIG. 4 is a fragmentary schematic top view of the preferred embodiment; and

FIG. 5 is a fragmentary schematic side view of the preferred embodiment in a state of weight loading.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 2, 3 and 4, the preferred embodiment of the box-spring assembly according to this invention includes two frames 2, a resilient member 3, a plurality of lateral springs 5, and a plurality of clips 4.

The frames 2 are spaced apart from each other, and each of the frames 2 has a looped lateral frame rod 21, which is formed in a rectangular shape in this preferred embodiment. In practical use, the looped lateral frame rod 21 can be formed in other geometrical shapes, such as a circular shape.

The resilient member 3 includes an array of spring coil units 31 disposed between the frames 2, and a plurality of connecting elements 32 connecting the spring coil units 31 to each other. Each of the connecting elements 32 is a metal wire that is coiled helically, and is connected to the top and bottom end portions of corresponding ones of the spring coil units 31.

The clips 4 connect the spring coil units 31 proximate to the looped lateral frame rods 21 and the lateral springs 5 to the looped lateral frame rods 21.

Each of the lateral springs 5 is connected between the looped lateral frame rods 21 so as to reinforce the looped lateral frame rods 21. Each of the lateral springs 5 includes two fastening end portions 51 extending parallel to and fastened to the looped lateral frame rods 21 correspondingly via the clips 4, a resilient helix portion 53 between the fastening end portions 51, and two supporting portions 52 each extending between a corresponding one of the fastening end portions 51 and the resilient helix portion 53 and oblique to the corresponding one of the fastening end portions 51. Each of the lateral springs 5 is a one-piece bent metal rod that substantially resembles a figure of M in this embodiment.

When the box-spring assembly of this invention is used for a mattress, the lateral springs 5 provide reinforced resilient support for the looped lateral frame rods 21 of the frames 2. Therefore, as shown in FIG. 5, the sides of the mattress corresponding to the looped lateral frame rods 21 of the frames 2 are not easily deformed when weight is loaded thereon. Furthermore, since the lateral springs 5 are bent along an axial direction of corresponding ones of the looped lateral frame rods 21 of the frames 2, the fabric of the mattress will not be damaged by the lateral springs 5.

While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that this invention is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.

Claims

1. A box-spring assembly, comprising: two frames spaced apart from each other and each having a looped lateral frame rod;a resilient member including an array of spring coil units disposed between said frames, and a plurality of connecting elements connecting said spring coil units to each other;a plurality of lateral springs each connected between said looped lateral frame rods so as to reinforce said looped lateral frame rods; anda plurality of clips connecting said spring coil units and said lateral springs to said looped lateral frame rods.

2. The box-spring assembly as claimed in claim 1, wherein each of said lateral springs includes two fastening end portions extending parallel to and fastened to said looped lateral frame rods correspondingly, a resilient helix portion between said fastening end portions, and two supporting portions each extending between a corresponding one of said fastening end portions and said resilient helix portion and oblique to said corresponding one of said fastening end portions.

3. The box-spring assembly as claimed in claim 2, wherein each of said lateral springs is a one-piece bent metal rod that substantially resembles a figure of M.

4. The box-spring assembly as claimed in claim 1, wherein each of said connecting elements is a metal wire that is coiled helically.