Bottom telescopic frame of sofa

Abstract

The bottom telescopic frame comprises a seat frame, a base is arranged below the seat frame, an assembling groove is longitudinally formed in the top face of the base, a lifting mechanism is installed at the inner bottom of the assembling groove, the bottom face of the seat frame is connected with a limiting table, and the lower end of the limiting table is located in the assembling groove. The lifting mechanism is connected to the bottom of the limiting table, and the outer side wall of the limiting table is attached to and slidably connected with the inner side wall of the assembling groove. The limiting table is located at the bottom of the seat frame, firstly, the structural strength of the seat frame is enhanced, the lifting mechanism cannot damage the seat frame, the lifting mechanism achieves height adjustment of the seat frame so as to be suitable for people of different figures to sit in a matched mode, and the legs of the people can be more relaxed; and meanwhile, the limiting table enables the assembling groove to form a sealed space, and external dust and other impurities are prevented from entering the assembling groove to be attached to the lifting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of sofa frames, in particular to a bottom telescopic frame of a sofa. Background Art

[0002] "Sofa" is a foreign word, which is transliterated from the English word sofa. It is a chair with a backrest equipped with springs or thick foam plastic, and armrests on both sides. It is a kind of soft furniture, usually placed in the living room for people to meet guests or rest.

[0003] The height of existing sofas is generally fixed. When there are children or other family members with large body differences, the sofa with a fixed height cannot meet the needs of every family member. For example, the sofa height suitable for adults means that children cannot put their feet on the ground when sitting, and conversely, the sofa height suitable for children means that adults need to bend their knees when sitting. For this reason, we propose a bottom telescopic frame of the sofa. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a bottom telescopic frame of a sofa. The limit platform is located at the bottom of the seat frame to first enhance its structural strength, and the lifting mechanism will not cause damage to the seat frame. The lifting mechanism can adjust the height of the seat frame to suit people of different body shapes so that their legs can be more relaxed. The limit platform is located inside the assembly groove and fits and slides closely, so that the lifting mechanism drives the seat frame to rise and fall more stably without shaking. At the same time, the limit platform forms a sealed space in the assembly groove to prevent external dust and other impurities from entering the assembly groove.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A bottom telescopic frame of a sofa comprises a seat frame, a base is arranged below the seat frame, a mounting groove is longitudinally opened on the top surface of the base, a lifting mechanism is installed on the inner bottom of the mounting groove, the bottom surface of the seat frame is connected to a limiting platform, the lower end of the limiting platform is located inside the mounting groove, and the lifting mechanism is connected to the bottom of the limiting platform, and the outer side wall of the limiting platform is in contact with and slidably connected to the inner side wall of the mounting groove.

[0007] Preferably, the upper end of the assembly groove is provided with a protective gasket which is slidably fitted with the side surface of the limiting platform.

[0008] Preferably, a corrugated sleeve is connected between the outer edge of the top surface of the base and the bottom surface of the seat frame.

[0009] Preferably, a back frame is connected and fixed to the top of the rear end of the seat frame.

[0010] Preferably, the back frame is tilted backward, and a reinforcing frame is connected between the back surface of the upper end and the seat frame.

[0011] Preferably, both side top surfaces of the seat frame are vertically connected with handrail frames.

[0012] Preferably, a plurality of seats are provided above the base, and the number of corresponding assembly slots is equal to the number of seats, and the assembly slots are arranged equidistantly along the length direction of the base.

[0013] Preferably, the end surfaces of the seat frame are all protruding from the side surfaces of the base and are arc surfaces.

[0014] Preferably, a supporting bottom plate is provided at the inner bottom of the assembly groove and below the lifting mechanism.

[0015] Preferably, the lifting mechanism includes an active lifting arm, a driven lifting arm and a hydraulic cylinder, the driven lifting arm intersects with the active lifting arm in an "X" shape and is rotatably connected at the intersection point, one end of the active lifting arm is hinged to the inner bottom of the assembly groove, and the other end is slidably connected to the bottom of the limit platform, one end of the driven lifting arm is hinged to the bottom of the limit platform, and the other end is slidably connected to the inner bottom of the assembly groove, the hydraulic cylinder is installed in the assembly groove and the end of the telescopic shaft of the hydraulic cylinder is hinged to the active lifting arm.

[0016] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0017] The limit platform is located at the bottom of the seat frame to first enhance its structural strength. The lifting mechanism is connected to the limit platform to indirectly drive the seat frame to rise and fall. The lifting mechanism will not cause damage to the seat frame. The lifting mechanism can adjust the seat frame to suit people of different body shapes so that their legs can be more relaxed. The limit platform is located inside the assembly slot and slides snugly, making the lifting mechanism more stable in driving the seat frame to rise and fall without shaking. At the same time, the limit platform forms a sealed space in the assembly slot, first hiding the lifting mechanism to make the sofa frame neater and more beautiful, and then preventing external dust and other impurities from entering the assembly slot and attaching to the lifting mechanism, thereby avoiding affecting the telescopic movement of the lifting mechanism. The closed assembly slot is conducive to the long-term smooth use of the lifting mechanism without maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the lifting mechanism of the utility model.

[0020] Figure 3 It is a schematic diagram of the seat frame of the utility model.

[0021] Figure 4 It is a top view of the base of the utility model.

[0022] Among them: 1. Base; 2. Assembly groove; 3. Seat frame; 4. Back frame; 5. Reinforcement frame; 6. Handrail frame; 7. Limiting platform; 8. Corrugated sleeve; 9. Active lifting arm; 10. Driven lifting arm; 11. Hydraulic cylinder; 12. Support base plate; 13. Protective gasket. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0028] Example

[0029] Please refer to Figure 1 and Figure 3As shown, the utility model provides a bottom telescopic frame of a sofa, including a seat frame 3, a base 1 is arranged below the seat frame 3, a mounting groove 2 is longitudinally opened on the top surface of the base 1, a lifting mechanism is installed on the inner bottom of the mounting groove 2, the bottom surface of the seat frame 3 is connected to a limiting platform 7, the lower end of the limiting platform 7 is located inside the mounting groove 2, and the lifting mechanism is connected to the bottom of the limiting platform 7, the outer side wall of the limiting platform 7 is fitted with the inner side wall of the mounting groove 2 and is slidably connected, the limiting platform 7 is located at the bottom of the seat frame 3 to first enhance its structural strength, the lifting mechanism is connected to the limiting platform 7 to indirectly drive the seat frame 3 to rise and fall, and the lifting mechanism will not cause damage to the seat frame 3. The lifting mechanism realizes the height adjustment of the seat frame 3 so as to be suitable for people of different body shapes to sit and make their legs more relaxed. The limit platform 7 is located inside the assembly groove 2 and slides closely, so that the lifting mechanism drives the seat frame 3 to rise and fall more stably, and the seat frame 3 will not shake during the lifting process. At the same time, the close sliding of the limit platform 7 and the assembly groove 2 forms a sealed space in the assembly groove 2, firstly hiding the lifting mechanism to make the sofa frame more tidy and beautiful, and then preventing foreign dust and other impurities from entering the assembly groove 2 and adhering to the lifting mechanism, so as to avoid affecting the telescopic movement of the lifting mechanism. The closed assembly groove 2 is conducive to the smooth use of the lifting mechanism without maintenance for a long time.

[0030] like Figure 2 and Figure 4 As shown, the utility model discloses that the upper end of the assembly groove 2 is provided with a protective gasket 13 which is slidably fitted with the side of the limit platform 7 to prevent foreign dust and other impurities from entering the assembly groove 2 and thus adhering to the lifting mechanism; a corrugated sleeve 8 is connected between the outer edge of the top surface of the base 1 and the bottom surface of the seat frame 3, and the corrugated sleeve 8 can be extended and retracted with the lifting and lowering of the seat frame 3 to prevent foreign dust and other impurities from entering the assembly groove 2 and thus adhering to the lifting mechanism.

[0031] like Figure 3 and Figure 4 As shown, the utility model discloses that a plurality of seat frames 3 are arranged above the base 1, and the number of corresponding assembly slots 2 is equal to that of the seat frames 3, and the assembly slots 2 are equidistantly arranged along the length direction of the base 1, and a back frame 4 is connected and fixed to the top of the rear end of the seat frame 3, and the back frame 4 is tilted backward, and a reinforcing frame 5 is connected between the back surface of the upper end and the seat frame 3, and the top surfaces on both sides of the seat frame 3 are vertically connected to handrail frames 6, and the end surfaces of the seat frame 3 are protruding from the side surfaces of the base 1 and are arc surfaces.

[0032] like Figure 2 As shown, the utility model discloses that a supporting bottom plate 12 is arranged at the inner bottom of the assembly groove 2 and below the lifting mechanism.

[0033] like Figure 2As shown, the utility model discloses a lifting mechanism including an active lifting arm 9, a driven lifting arm 10 and a hydraulic cylinder 11. The driven lifting arm 10 intersects with the active lifting arm 9 in an "X" shape and is rotatably connected at the intersection point. One end of the active lifting arm 9 is hinged to the inner bottom of the assembly groove 2, and the other end is slidably connected to the bottom of the limit platform 7. One end of the driven lifting arm 10 is hinged to the bottom of the limit platform 7, and the other end is slidably connected to the inner bottom of the assembly groove 2. The hydraulic cylinder 11 is installed in the assembly groove 2 and the end of the telescopic shaft of the hydraulic cylinder 11 is hinged to the active lifting arm 9.

[0034] The utility model provides a bottom telescopic frame of a sofa, wherein the limit platform 7 is located at the bottom of the seat frame 3 to firstly enhance its structural strength, the lifting mechanism is connected to the limit platform 7 to indirectly drive the seat frame 3 to rise and fall, the lifting mechanism will not cause damage to the seat frame 3, the lifting mechanism can adjust the height of the seat frame 3 to be suitable for people of different body shapes to sit and make their legs more relaxed, the limit platform 7 is located inside the assembly groove 2 and slides in close contact, so that the lifting mechanism drives the seat frame 3 to rise and fall more stably, the seat frame 3 will not shake during the lifting process, and at the same time, the close contact sliding of the limit platform 7 and the assembly groove 2 forms a sealed space in the assembly groove 2, firstly hiding the lifting mechanism to make the sofa frame more neat and beautiful, and then preventing foreign dust and other impurities from entering the assembly groove 2 and thus adhering to the lifting mechanism, avoiding affecting the telescopic movement of the lifting mechanism, and the closed assembly groove 2 is conducive to the smooth use of the lifting mechanism without maintenance for a long time.

[0035] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic bottom frame of a sofa, comprising a seat frame (3), characterized in that: A base (1) is provided below the seat frame (3), a mounting groove (2) is longitudinally provided on the top surface of the base (1), and a lifting mechanism is installed on the inner bottom of the mounting groove (2); The bottom surface of the seat frame (3) is connected to a limiting platform (7), the lower end of the limiting platform (7) is located inside the assembly groove (2), and the lifting mechanism is connected to the bottom of the limiting platform (7), and the outer side wall of the limiting platform (7) is in contact with the inner side wall of the assembly groove (2) and is slidably connected; The lifting mechanism comprises an active lifting arm (9), a driven lifting arm (10) and a hydraulic cylinder (11); the driven lifting arm (10) and the active lifting arm (9) intersect in an "X" shape and are rotationally connected at the intersection point; one end of the active lifting arm (9) is hinged to the inner bottom of the assembly groove (2), and the other end is slidably connected to the bottom of the limit platform (7); one end of the driven lifting arm (10) is hinged to the bottom of the limit platform (7), and the other end is slidably connected to the inner bottom of the assembly groove (2); the hydraulic cylinder (11) is installed in the assembly groove (2), and the end of the telescopic shaft of the hydraulic cylinder (11) is hinged to the active lifting arm (9).

2. The bottom telescopic frame of a sofa according to claim 1, characterized in that: The upper end of the assembly groove (2) is provided with a protective gasket (13) which is slidably fitted with the side surface of the limiting platform (7).

3. The bottom telescopic frame of a sofa according to claim 1, characterized in that: A corrugated sleeve (8) is connected between the outer edge of the top surface of the base (1) and the bottom surface of the seat frame (3).

4. The bottom telescopic frame of a sofa according to claim 1, characterized in that: A back frame (4) is connected and fixed to the top of the rear end of the seat frame (3).

5. The bottom telescopic frame of a sofa according to claim 4, characterized in that: The back frame (4) is tilted backwards, and a reinforcing frame (5) is connected between the back surface of the upper end and the seat frame (3).

6. The bottom telescopic frame of a sofa according to claim 1, characterized in that: The top surfaces on both sides of the seat frame (3) are vertically connected with handrail frames (6).

7. The bottom telescopic frame of a sofa according to claim 1, characterized in that: A plurality of seat frames (3) are provided above the base (1), and the number of corresponding assembly slots (2) is equal to that of the seat frames (3), and the assembly slots (2) are arranged at equal distances along the length direction of the base (1).

8. The bottom telescopic frame of a sofa according to claim 1, characterized in that: The end surfaces of the seat frame (3) are all protruding from the side surfaces of the base (1) and are arc surfaces.

9. The bottom telescopic frame of a sofa according to claim 1, characterized in that: A supporting bottom plate (12) is provided at the inner bottom of the assembly groove (2) and below the lifting mechanism.

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