Integral seat cushion frame

Abstract

The utility model belongs to the technical field of sofa seat structures, and particularly relates to an integral seat cushion frame. The utility model provides an integral seat cushion frame, which is characterized in that the front end inclined strip, the rear end inclined strip, the front end strip and the rear end strip are arranged on the side edge strips, so that 1, the front end strip can be lifted, and the telescopic pedal in a folded state can be effectively accommodated; and 2, the serpentine spring is lifted, so that in the whole telescopic adjusting and using process of the seat cushion frame, the driving cross rod cannot abut against the serpentine spring, the serpentine spring is allowed to have a certain downward bending safety amplitude, and it is ensured that the seat cushion frame is suitable for various lying and sitting dual-purpose sofas / seats with lower telescopic adjusting structures.

Description

Technical Field

[0001] The utility model belongs to the technical field of sofa seat structures, in particular to an integral seat cushion frame. Background Art

[0002] The common sofas and chairs are mainly composed of a frame structure and a soft packing structure, and the frame structure can be further divided into a seat cushion frame, a back cushion frame and an armrest frame.

[0003] Generally, the seat cushion frame is composed of the following parts: a rectangular frame, springs and legs. The backrest frame and the armrest frame are both connected to the rectangular frame, and the rectangular frame and the springs are used to support the seat cushion body of the soft bag.

[0004] When the rectangular frame is a complete structure that does not need to be assembled by the user, the seat frame can be considered as an integral structure. The existing common integral seat frame is generally made of various square tubes, and a plurality of square tubes are connected end to end.

[0005] For example, a Chinese utility model patent with patent publication number CN220109453U and publication date 2023.12.01 discloses a highly durable elastic seat frame and sofa, whose structure includes an elastic seat frame body and an elastic pad. The elastic seat frame body is provided with a hollow area, and a plurality of serpentine springs are provided in the hollow area. The two ends of the serpentine spring are respectively fixed on the elastic seat frame body and are located in the same plane; the elastic pad is used to cover the hollow area, and the four sides of the elastic pad are respectively connected to the elastic seat frame body; the serpentine spring is located under the elastic pad.

[0006] The elastic seat frame in this utility model patent can effectively solve the problem of short service life of the sofa due to friction of the elastic band, and will not make abnormal noise.

[0007] However, the elastic seat frame still has at least the following disadvantages in actual use, which are also the technical problems to be solved by the present utility model, namely:

[0008] The elastic seat frame body is a unified planar structure, and its upper surface is flush with the serpentine spring. Therefore, the space allowed for installing other structures under the elastic seat frame and the serpentine spring is relatively small. For example, it is difficult to install a retractable footrest structure and a sofa flat structure. That is, the elastic seat frame is not suitable for a sofa / seat with a reclining backrest.

[0009] Therefore, in summary, there is an urgent need for an integral seat cushion frame that is convenient for installing a telescopic adjustment structure below, so as to be used in various types of reclining and sitting sofas and reclining and sitting chair products. Utility Model Content

[0010] The utility model provides an integral seat cushion frame, which can be provided with a front end inclined strip, a rear end inclined strip, a front end strip, and a rear end strip on the side strips, so that:

[0011] 1. The front bar can be lifted to effectively accommodate the retractable foot pedal in the folded state;

[0012] 2. The serpentine spring can be lifted, and during the entire telescopic adjustment process of the seat cushion frame, the driving cross bar will not hit the serpentine spring, allowing the serpentine spring to have a certain downward bending safety range, ensuring that the seat cushion frame is suitable for various types of reclining and sitting sofas / seats with a telescopic adjustment structure at the bottom.

[0013] The technical solution adopted by the utility model to solve the above-mentioned problem is: an integral seat cushion frame, the structure of which includes side strips, a front end strip, and a rear end strip, and also includes a front end inclined strip arranged at the front end position of the side strip and used to accommodate a telescopic foot pedal under the front end strip by raising the height of the front end strip, and a rear end inclined strip arranged at the rear end position of the side strip and used to increase the height difference between the serpentine spring and the driving cross bar by raising the height of the rear end strip.

[0014] A further preferred technical solution is that the number of the front end inclined strips and the number of the rear end inclined strips are both 2.

[0015] A further preferred technical solution is that: the side strips are also provided with vertical openings for installing the telescopic frame connecting bolts.

[0016] A further preferred technical solution is that vertical strips for mounting handrails are also provided on the relatively outer sides of the side strips.

[0017] A further preferred technical solution is that: the vertical bars are also provided with transverse openings for installing handrail board connecting bolts.

[0018] A further preferred technical solution is that two of the vertical openings are provided on each of the two side strips.

[0019] A further preferred technical solution is that two of the vertical strips are provided on each of the two side strips.

[0020] A further preferred technical solution is that: the vertical strip is provided with two transverse openings located at upper and lower sides of the side strip respectively.

[0021] A further preferred technical solution is that the distance between the vertical opening and the end surface of the side strip is less than one quarter of the length of the side strip.

[0022] A further preferred technical solution is that the upper surfaces of the front end bar, the rear end bar and the two side strips are all flush, the height difference between the upper surface of the front end bar and the upper surface of the side strip is 2.0-4.0 cm, and the height difference between the upper surface of the rear end bar and the upper surface of the side strip is 1.0-3.5 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the use method of the vertical opening in the utility model.

[0025] Figure 3 It is a schematic diagram of the position and shape of the front end inclined strip in the utility model.

[0026] Figure 4 It is a schematic diagram of the method for unfolding and using the telescopic foot pedal in the utility model.

[0027] Figure 5 It is a schematic diagram of the positions of the telescopic frame connecting bolts and the handrail board connecting bolts in the utility model.

[0028] Figure 6 It is a schematic diagram of the position of the serpentine spring in the utility model from a top view.

[0029] Figure 7 It is a schematic diagram of the separation state between the serpentine spring and the driving cross bar when the telescopic foot pedal is folded and the seat cushion frame is laid flat in the utility model.

[0030] In the figure, the meanings of the symbols are as follows:

[0031] Telescopic foot pedal a, serpentine spring b, driving cross bar c, telescopic frame connecting bolt d, armrest board connecting bolt e, telescopic frame connecting plate f, foot pedal soft bag g, backrest soft bag h, telescopic cylinder k, seat cushion soft bag m;

[0032] Side strips 11, front strips 12, rear strips 13;

[0033] Front end inclined strip 1, rear end inclined strip 2, vertical opening 3, vertical strip 4, horizontal opening 5. DETAILED DESCRIPTION

[0034] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0035] As attached Figure 1-7As shown, an integral seat cushion frame structure includes side strips 11, a front end strip 12, and a rear end strip 13, and also includes a front end inclined strip 1 arranged at the front end position of the side strip 11 and used to accommodate a telescopic foot pedal a under the front end strip 12 by raising the height of the front end strip 12, and a rear end inclined strip 2 arranged at the rear end position of the side strip 11 and used to increase the height difference between the serpentine spring b and the driving cross bar c by raising the height of the rear end strip 13.

[0036] In this embodiment, the side strips 11, front strips 12 and rear strips 13 are all square tubes made of steel, and are connected end to end with the front inclined strips 1 and rear inclined strips 2 to form a rectangular three-dimensional frame with "high ends and low middle". The "front end" is the end away from the sofa / seat backrest, and the "rear end" is the opposite end, which is the end where the backrest is installed.

[0037] In addition, the entire rectangular three-dimensional frame is integrally formed or welded end to end, and chamfers can be further provided at transition positions between “strips” as required.

[0038] Among them, compared with the side strips 11, the front end strip 12 is convex upward as a whole, so that the telescopic footrest a and even the large-sized footrest soft bag g can be folded and collected under the front end strip 12 and placed in idle position.

[0039] Compared with the side strips 11, the rear end strip 13 is also convex upward as a whole, which ultimately makes the serpentine spring b higher than the side strips 11 as a whole, ensuring that the larger-sized electrified telescopic structure below the serpentine spring b can be effectively installed, that is, during the complete use of the telescopic cylinder k, the driving cross bar c will not hit the serpentine spring b.

[0040] Generally, when the driving cross bar c is closest to the serpentine spring b, the seat cushion frame is flat, that is, the sofa / chair is in a sitting position. When it is switched to a lying position, the driving cross bar c will not hit the serpentine spring b.

[0041] The number of the front end inclined strips 1 and the number of the rear end inclined strips 2 are both 2.

[0042] In this embodiment, the seat cushion frame is formed by 8 square tubes divided by function and connected end to end in sequence, including: 2 side strips 11, 2 front end inclined strips 1, 2 rear end inclined strips 2, 1 front end strip 12, and 1 rear end strip 13.

[0043] However, in the actual product appearance of the seat cushion frame, the above-mentioned connection points are not necessarily visible, and multiple adjacent square tubes can be formed in one piece.

[0044] The side strip 11 is also provided with a vertical opening 3 for installing the telescopic frame connecting bolts d.

[0045] In this embodiment, the cross-sectional shape of the telescopic frame connecting plate f is "L-shaped", which fits the lower surface and the relative inner side surface of the side strip 11. The telescopic frame connecting bolt d connects its transverse bottom plate and the side strip 11, and inevitably partially protrudes above the upper surface of the side strip 11.

[0046] Therefore, the indirect effect of the front end inclined bar 1 and the rear end inclined bar 2 lifting the front end bar 12 and the rear end bar 13 is that the seat cushion soft bag m will not be pressed on the side bar 11, freeing up installation space for the telescopic frame connecting bolt d, or in other words, the telescopic frame connecting bolt d will not break through the seat cushion soft bag m, which is very practical and necessary.

[0047] The side strips 11 are also provided with vertical strips 4 for mounting handrails on the opposite outer sides.

[0048] In this embodiment, the armrest is installed on the two vertical bars 4 on the same side, and the relative position between the armrest and the seat cushion frame remains unchanged. When the above-mentioned electrified telescopic structure is unfolded, when the sofa / seat is switched to the lying state, the armrest and the seat cushion frame are in a tilted state of "front end high and rear end low". For details, please refer to the attached Figure 4 .

[0049] The vertical bar 4 is also provided with a transverse opening 5 for installing the handrail board connecting bolts e.

[0050] In this embodiment, the seat cushion m also needs to vertically avoid the armrest board connection bolt e during normal use, otherwise the latter will greatly wear the former. Therefore, the front end bar 12 and the rear end bar 13 are raised by the front end inclined bar 1 and the rear end inclined bar 2, and the beneficial effect is also reflected in the seat cushion m avoiding the armrest board connection bolt e, thereby protecting the seat cushion m.

[0051] Two vertical openings 3 are provided on each of the two side strips 11 .

[0052] In this embodiment, a plurality of vertical holes for weight reduction may be further provided on the side strips 11, the front strip 12 and the rear strip 13 as required, as long as the structural strength of the seat cushion frame is not reduced.

[0053] There is no need to provide threads on the vertical opening 3, and the bolts are used together with nuts.

[0054] Two vertical strips 4 are disposed on each of the two side strips 11 .

[0055] In this embodiment, the vertical bars 4 and the side bars 11 are fixed by welding, and the former is also a square tube.

[0056] The vertical strip 4 is provided with two transverse openings 5 ​​located at upper and lower sides of the side strip 11 , respectively.

[0057] In this embodiment, precisely because at least one of the armrest board connecting bolts e is located above the side strip 11, the seat cushion soft bag m needs to vertically avoid the armrest board connecting bolts e, and the seat cushion frame needs to be provided with a front end inclined strip 1 and a rear end inclined strip 2.

[0058] The distance between the vertical opening 3 and the end surface of the side strip 11 is less than one quarter of the length of the side strip 11 .

[0059] In this embodiment, during normal use of the sofa / chair, the seat cushion m and the serpentine spring b will inevitably bulge downward and collapse, and generally, the middle part collapses the most. Therefore, the vertical opening 3, i.e., the telescopic frame connecting bolt d, is arranged sideways to avoid the seat cushion m to the greatest extent, so that the telescopic frame connecting bolt d is not easy to hit the seat cushion m.

[0060] The upper surfaces of the front end bar 12, the rear end bar 13 and the two side bars 11 are all flush, the height difference between the upper surface of the front end bar 12 and the upper surface of the side bars 11 is 2.0-4.0 cm, and the height difference between the upper surface of the rear end bar 13 and the upper surface of the side bars 11 is 1.0-3.5 cm.

[0061] In this embodiment, the front inclined bar 1 and the rear inclined bar 2 have the same function of lifting the serpentine spring b. The additional function of the front inclined bar 1 is to further lift the front bar 12 to make room for the retractable footrest a in the folded state. Therefore, the front bar 12 can be located higher than the rear bar 13.

[0062] In addition, the cross-sectional dimensions of the side strips 11, the front strips 12 and the rear strips 13 are all consistent. The seat cushion m itself is soft, so the uneven front strips 12 and rear strips 13 can also stably support the seat cushion m.

[0063] Finally, for this sofa / seat, its front end is more "upturned" than the rear end. This feature can improve riding comfort and safety, and it is not easy for passengers to slide out.

[0064] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. An integral seat cushion frame, comprising side strips (11), a front strip (12), and a rear strip (13), characterized in that: The invention also includes a front end inclined strip (1) arranged at the front end of the side strip (11) and used to accommodate the telescopic foot pedal (a) below the front end strip (12) by raising the height of the front end strip (12); and a rear end inclined strip (2) arranged at the rear end of the side strip (11) and used to increase the height difference between the serpentine spring (b) and the driving cross bar (c) by raising the height of the rear end strip (13).

2. The integrated seat cushion frame according to claim 1, characterized in that: The number of the front end inclined strips (1) and the rear end inclined strips (2) is 2.

3. The integrated seat cushion frame according to claim 1, characterized in that: The side strips (11) are also provided with vertical openings (3) for installing telescopic frame connecting bolts (d).

4. The integrated seat cushion frame according to claim 1, characterized in that: A vertical strip (4) for mounting a handrail is also provided on the opposite outer side of the side strip (11).

5. The integrated seat cushion frame according to claim 4, characterized in that: The vertical bar (4) is also provided with a transverse opening (5) for installing a handrail plate connecting bolt (e).

6. The integrated seat cushion frame according to claim 3, characterized in that: Two vertical openings (3) are provided on each of the two side strips (11).

7. The integrated seat cushion frame according to claim 4, characterized in that: Two vertical strips (4) are provided on each of the two side strips (11).

8. The integrated seat cushion frame according to claim 5, characterized in that: The vertical strip (4) is provided with two transverse openings (5) located at upper and lower sides of the side strip (11), respectively.

9. The integrated seat cushion frame according to claim 6, characterized in that: The distance between the vertical opening (3) and the end surface of the side strip (11) is less than one quarter of the length of the side strip (11).

10. The integrated seat cushion frame according to claim 1, characterized in that: The upper surfaces of the front end strip (12), the rear end strip (13) and the two side strips (11) are all flush, the height difference between the upper surface of the front end strip (12) and the upper surface of the side strip (11) is 2.0-4.0 cm, and the height difference between the upper surface of the rear end strip (13) and the upper surface of the side strip (11) is 1.0-3.5 cm.

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