CN202525634U

CN202525634U - Sofa seat underframe

Info

Publication number: CN202525634U
Application number: CN2012201039912U
Authority: CN
Inventors: 黄忠良
Original assignee: Zhejiang Yongyi Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2012-03-19
Filing date: 2012-03-19
Publication date: 2012-11-14
Anticipated expiration: 2022-03-19

Abstract

The utility model discloses a sofa seat underframe which comprises an upper frame, a lower frame and a tension spring, wherein the upper frame comprises a left plate, a right plate and two square tubes connecting the left and right plates; the lower frame comprises a left foot tube, a right foot tube and two square tubes connecting the left and right foot tubes; shaking woods used for leading the upper frame to shake are arranged between the left plate and the left foot tube and between the right plate and the right foot tube, respectively; hook plates used for fixedly mounting the tension spring are arranged between the two square tubes of the upper frame and the two square tubes of the lower frame, respectively; the upper and lower ends of the tension spring are fixedly connected with the hook plates at corresponding positions; the hook plate and square tubes of the upper frame and the left or right plate are welded; and the hook plate and square tubes of the lower frame and the left or right foot tube are welded. According to the sofa seat underframe, the cross rails of the upper and lower frames adopt square tubes having the same cost, and the hook plates used for fixing the tension spring, the square tubes and the left and right plates or the left and right foot tubes are welded; and the underframe is easy in spraying and powdering, the strength is improved and the cost is reduced.

Description

A kind of sofa seat tool underframe

Technical field

The utility model relates to a kind of sofa seat tool, relates in particular to a kind of sofa front and back of realizing and freely shakes the seat tool underframe of leisure function.

Background technology

Existing sofa seat tool can shake underframe, generally has two types, and one type is that the crosspiece pipe of upper and lower framework is that hook plate with " U " section bar and fixedly extension spring is welded; Though another kind of crosspiece pipe also is to use square steel tube,, crosspiece pipe and hook plate are used bolt.

These two types of underframe, the first kind owing to used " U " section bar to do crosspiece and hook plate welding, has two aspect deficiencies, and the first, during plastic-blasting,, make that " U " shape bottom comers is difficult for going up powder, and product leaves sharp edge and laying dust etc. because of the electrostatic screen factor; The second, the incompatible underframe that surpasses 20 inches width.Because, wide underframe about in the middle of each a pair of extension spring, must set up a pair of spring and support, as adopting " U " section bar of same thickness, then intensity is obviously not enough.Another kind of, though also adopt square steel tube as upper and lower frame rail, because itself and hook plate are used bolt, this hook plate that just requires to be fixed must have enough intensity and assembling, and cost is obviously higher.

Summary of the invention

The utility model is to the deficiency of above-mentioned prior art; Provide a kind of intensity high, be easy to powder, sofa seat tool underframe cheaply; When having solved existing underframe and having made crosspiece with " U " shape punching press section bar; " U " shape section bar bottom comers is difficult for that spraying goes up that powder and product leave sharp edge, laying dust and to widening problem such as the obvious deficiency of underframe intensity; Also solved and similarly made crosspiece, but hook plate is to be fixed by bolts on the crosspiece, the problem that the assembly cost that makes hook plate will have enough rigidity to cause is high with square steel tube.

The technical scheme of the utility model is achieved in that

A kind of sofa seat tool underframe; Comprise upper frame, underframe and shake the extension spring that reseting elasticity is provided for upper frame; Described upper frame comprises left and right side plate and two square tubes that are connected left and right side plate, and underframe comprises left and right pin pipe and connects two square tubes of left and right pin pipe, between left plate and left foot pipe, right plate and right crus of diaphragm pipe, is respectively equipped with and shakes wood; The cambered surface of shaking wooden lower end contacts with left foot pipe, right crus of diaphragm pipe upper surface; Shake wood upper end and be fixedly connected with left plate, right plate, between two square tubes of upper frame, underframe, be respectively equipped with and be used for fixing the hook plate that extension spring is installed, the two ends up and down of extension spring are fixedly connected with the hook plate of correspondence position; The hook plate of upper frame and the square tube of upper frame and left plate or right plate weld together, and the hook plate of underframe and the square tube of underframe and left foot pipe or right crus of diaphragm pipe weld together.

Adopted the advantage that the utlity model has of technique scheme to be:

The crosspiece of the upper and lower framework of the utility model underframe adopts the rectangular steel tube with the equal cost of normally used " U " shape section bar, and the hook plate of fixedly extension spring and square tube and left and right side plate or the welding of left and right pin pipe; Make underframe be easy to spray powder, and improved intensity, reduced cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

The specific embodiment

The specific embodiment of the utility model is following:

Embodiment: as shown in Figure 1; A kind of sofa seat tool underframe; Comprise upper frame, underframe and shake the extension spring 4 that reseting elasticity is provided for upper frame; Described upper frame comprises left and right side plate 2,3 and two square tubes 1 as crosspiece that are connected left and right side plate 2,3, and underframe comprises left and right pin pipe 5,6 and connects two square tubes 1 of left and right pin pipe 5,6, between left plate 2 and left foot pipe 5, right plate 3 and right crus of diaphragm pipe 6, is respectively equipped with and shakes wood 7; The cambered surface of shaking wooden 7 lower ends contacts with left foot pipe 5, right crus of diaphragm pipe 6 upper surfaces; Shake wooden 7 upper ends and left plate 2, right plate 3 and be fixedly connected through screw, between two square tubes of upper frame, underframe, be respectively equipped with and be used for fixing the hook plate 8 that extension spring 4 is installed, the two ends up and down of extension spring 4 are fixedly connected with the hook plate 8 of correspondence position; The hook plate 8 of upper frame and the square tube 1 of upper frame and left plate 2 or right plate 3 weld together, and the hook plate 8 of underframe and the square tube 1 of underframe and left foot pipe 5 or right crus of diaphragm pipe 6 weld together.

The utility model is except that the crosspiece employing of the upper and lower framework of underframe and the rectangular steel tube of the equal cost of normally used " U " shape section bar; And fixedly outside the welding of the hook plate of extension spring and square tube and left and right side plate or left and right pin pipe; Other structures are all identical with prior art; Because of the pulling force of extension spring make about two cambered surfaces of shaking wood be pressed on the left and right pin pipe of underframe; Because the pulling force of extension spring and the arcwall face that shakes wood when human body is sitting under the initial external force effect on the sofa seat tool, are accomplished before and after shaking wooden cambered surface and are freely shaken stably.

Claims

1. sofa seat tool underframe; It is characterized in that: comprise upper frame, underframe and shake the extension spring that reseting elasticity is provided for upper frame; Described upper frame comprises left and right side plate and two square tubes that are connected left and right side plate; Underframe comprises left and right pin pipe and connects two square tubes of left and right pin pipe; Between left plate and left foot pipe, right plate and right crus of diaphragm pipe, be respectively equipped with and shake wood, the cambered surface of shaking wooden lower end contacts with left foot pipe, right crus of diaphragm pipe upper surface, shakes the wood upper end and is fixedly connected with left plate, right plate; Between two square tubes of upper frame, underframe, be respectively equipped with and be used for fixing the hook plate that extension spring is installed; The two ends up and down of extension spring are fixedly connected with the hook plate of correspondence position, and the hook plate of upper frame and the square tube of upper frame and left plate or right plate weld together, and the hook plate of underframe and the square tube of underframe and left foot pipe or right crus of diaphragm pipe weld together.