Portable push-pull sofa bed frame

Abstract

The utility model discloses a portable push-and-pull sofa bed frame, which belongs to the technical field of sofa beds and comprises a [-shaped main frame body with an opening on one side, a backrest connecting rod is vertically and fixedly connected to one side, far away from the opening, of the upper end surface of the main frame body, a backrest is fixedly connected to the top end of the backrest connecting rod, and a mattress is placed on the main frame body in a folding manner. Supporting legs are vertically and fixedly connected to the four corners of the lower end face of the main frame body, first longitudinal supporting rods are fixedly connected between the two transverse parts of the main frame body, the first longitudinal supporting rods are transversely distributed at equal intervals, the upper ends of the first longitudinal supporting rods are flush with the upper end face of the main frame body, and transverse sliding grooves are horizontally formed in the inner side walls of the two transverse parts of the main frame body. And vertical sliding grooves are vertically formed in the ends, close to the opening of the main frame body, of the two transverse sliding grooves in a communicating mode, sliding blocks are movably arranged in the two transverse sliding grooves correspondingly, a rectangular auxiliary frame body is fixedly connected between the two sliding blocks, and supporting assemblies are arranged at the four corners of the lower end face of the auxiliary frame body correspondingly. Through the arrangement, the experience feeling of people is improved, so that the practicability of the sofa bed is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sofa beds, and in particular relates to a portable push-pull sofa bed frame. Background Art

[0002] In today's society, as people's material living standards continue to improve, people's requirements for traditional furniture are getting higher and higher; the requirements for furniture functions are also increasing. Sofas are the most commonly used furniture. Almost every household has a sofa. Modern furniture pursues simplicity and high-end. Large-volume furniture will occupy most of the space in the house. In order to save space, cost and portability, more and more functions are attached to the sofa, such as making the sofa into a foldable combination, and the sofa bed has the functions of both a sofa and a bed.

[0003] As proposed in the patent document with announcement number CN209712258U, a portable sliding sofa bed frame includes a fixed upper bed frame, a movable lower bed frame, a backrest and a folding mattress, the fixed upper bed frame includes a back square tube, a back leg tube, a bottom transverse tube, a front leg tube, a back mounting iron sheet, a front mounting iron sheet, a cross brace, a first square tube, a second square tube and a backrest mounting sheet, the movable lower bed frame includes a rectangular outer frame, a longitudinal middle straight tube, a transverse middle straight tube, a front fixed straight tube, a front leg tube, a front roller, a wheel cover, a rear fixed straight tube, a rear leg tube, a rear roller and a limiting pulley, the movable lower bracket is placed on the upper part of the fixed upper bed frame, and the limiting pulley is slidably connected to the bottom transverse tube, the backrest is fixedly installed on the two backrest mounting sheets, and the folding mattress is fixedly installed on the two back mounting iron sheets and the two front mounting iron sheets.

[0004] After reading the above documents, it is found that when the sofa bed needs to be transformed into a bed, the lower bed frame needs to be moved to allow the entire bed frame to stretch and unfold to complete the deformation of the sofa bed, and then the mattress is turned over and placed on the movable lower bed frame. When the movable lower bed frame is stretched outward, the multiple longitudinal middle straight tubes supporting the mattress move outward with the movable lower bed frame. At this time, the mattress located in the middle of the fixed upper bed frame will lack support, resulting in depression, which in turn leads to poor experience for people and low practicality, and needs to be optimized. Utility Model Content

[0005] The purpose of the utility model is to provide a portable push-pull sofa bed frame to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A portable push-pull sofa bed frame includes a U-shaped main frame body with an opening on one side. On the upper end face of the main frame body, a backrest connecting rod is vertically fixedly connected to the side far away from the opening. The top end of the backrest connecting rod is fixedly connected to a backrest. A mattress is folded and placed on the main frame body. At the four corners of the lower end face of the main frame body, support legs are vertically fixedly connected. Between the two horizontal parts of the main frame body, a plurality of first longitudinal support rods are fixedly connected. The plurality of first longitudinal support rods are horizontally equidistantly distributed. The upper ends of the first longitudinal support rods are flush with the upper end face of the main frame body. On the inner side walls of the two horizontal parts of the main frame body, horizontal sliding grooves are horizontally opened. At the ends of the two horizontal sliding grooves close to the opening of the main frame body, vertical sliding grooves are vertically communicated. In the two horizontal sliding grooves, sliders are movably arranged. A rectangular sub-frame body is fixedly connected between the two sliders. The two sliders are respectively fixedly connected to the two side walls at one end of the sub-frame body. Between the two side walls of the sub-frame body, a plurality of second longitudinal support rods are fixedly connected. The plurality of second longitudinal support rods are horizontally equidistantly distributed. At the four corners of the lower end face of the sub-frame body, support components are provided.

[0008] Preferably, the support component includes a telescopic sleeve and a telescopic rod. The telescopic sleeve is vertically fixedly connected to the lower end face of the sub-frame body. The telescopic rod is telescopically movably arranged in the telescopic sleeve. An installation groove is provided on the side wall of the telescopic rod. A fixing convex block is movably arranged at the notch of the installation groove. A spring is fixedly connected between the fixing convex block and the bottom of the installation groove. A fixing hole is penetrated and opened on the side wall of the telescopic sleeve. The fixing hole is adapted to the fixing convex block.

[0009] Preferably, a second universal wheel is connected to the bottom end face of the telescopic rod.

[0010] Preferably, a first universal wheel is connected to the bottom end face of the support leg.

[0011] Preferably, a push-pull handle is fixedly connected to the side wall of the sub-frame body close to the opening of the main frame body.

[0012] Preferably, both the backrest and the mattress are made of memory foam material.

[0013] In summary, the technical effects and advantages of the present utility model are as follows: By opening horizontal sliding grooves and vertical sliding grooves on the inner side walls of the two horizontal parts of the main frame body, arranging sliders in the two horizontal sliding grooves, fixedly connecting a sub-frame body between the two sliders, arranging first longitudinal support rods flush with the upper end face of the main frame body on the main frame body, and arranging second longitudinal support rods flush with the upper end face of the sub-frame body on the sub-frame body, after adjusting the sub-frame body, the upper end faces of the main frame body and the sub-frame body are flush, so that the mattress can be horizontally unfolded, the mattress can be sufficiently supported, and the experience of people can be improved, thereby improving the practicability of the sofa bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the position of the auxiliary frame after adjustment;

[0016] Figure 3 It is a schematic diagram of the positions of the horizontal slide groove, vertical slide groove and slider;

[0017] Figure 4 This is a schematic diagram of the fixing protrusion being inserted into the fixing hole.

[0018] In the figure: 1. main frame; 2. connecting rod; 3. backrest; 4. mattress; 5. supporting leg; 6. first longitudinal support rod; 7. horizontal slide groove; 8. vertical slide groove; 9. slider; 10. sub-frame; 11. second longitudinal support rod; 12. telescopic sleeve; 13. telescopic rod; 14. mounting groove; 15. fixing protrusion; 16. spring; 17. fixing hole; 18. second universal wheel; 19. first universal wheel; 20. push-pull handle. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] like Figure 1-4 A portable sliding sofa bed frame is shown, comprising a U-shaped main frame 1 with an opening on one side, a backrest connecting rod 2 is vertically fixedly connected to the side of the upper end surface of the main frame 1 away from the opening, a backrest 3 is fixedly connected to the top of the backrest connecting rod 2, a mattress 4 is folded and placed on the main frame 1, supporting legs 5 are vertically fixedly connected to the four corners of the lower end surface of the main frame 1, a plurality of first longitudinal support rods 6 are fixedly connected between the two transverse parts of the main frame 1, the plurality of first longitudinal support rods 6 are horizontally equidistantly distributed, and the upper ends of the first longitudinal support rods 6 are flush with the upper end surface of the main frame 1.

[0023] The backrest 3 and the mattress 4 are both made of memory foam material. The memory foam material has good air permeability and soft texture, which can further improve the use experience of the sofa bed.

[0024] Furthermore, in order to keep the mattress 4 flat when the sofa bed is adjusted to a bed shape so as to improve people's experience, horizontal slide grooves 7 are horizontally opened on the inner side walls of the two horizontal parts of the main frame 1, and the two horizontal slide grooves 7 are vertically connected to each other at one end of the opening of the main frame 1, and a vertical slide groove 8 is opened. Slide blocks 9 are movably arranged in the two horizontal slide grooves 7, and a rectangular sub-frame 10 is fixedly connected between the two slide blocks 9. The two slide blocks 9 are respectively fixedly connected to the two side walls of one end of the sub-frame 10, and a plurality of second longitudinal support rods 11 are fixedly connected between the two side walls of the sub-frame 10. The plurality of second longitudinal support rods 11 are horizontally equidistantly distributed, and support components are arranged at the four corners of the lower end surface of the sub-frame 10.

[0025] The supporting assembly includes a telescopic sleeve 12 and a telescopic rod 13. The telescopic sleeve 12 is vertically fixedly connected to the lower end surface of the sub-frame 10. The telescopic rod 13 is telescopically movably arranged in the telescopic sleeve 12. A mounting groove 14 is opened on the side wall of the telescopic rod 13. A fixing protrusion 15 is movably arranged at the groove opening of the mounting groove 14. A spring 16 is fixedly connected between the fixing protrusion 15 and the bottom of the mounting groove 14. A fixing hole 17 is opened through the side wall of the telescopic sleeve 12, and the fixing hole 17 is adapted to the fixing protrusion 15.

[0026] It should be noted that: when the sofa bed needs to be adjusted from a sofa shape to a bed shape, the sub-frame 10 is pulled toward the open side of the main frame 1 until the slider 9 is moved to the intersection of the horizontal slide groove 7 and the vertical slide groove 8, and then the telescopic rod 13 is adjusted and pulled down. When the notch of the mounting groove 14 on the telescopic rod 13 is aligned with the fixing hole 17, the fixing protrusion 15 is pushed out of the mounting groove 14 and stuck into the fixing hole 17 under the action of the spring 16. At this time, since the total length of the telescopic sleeve 12 and the telescopic rod 13 becomes longer, the sub-frame 10 will be displaced in the vertical direction, so that the upper end surfaces of the main frame 1 and the sub-frame 10 are flush, and finally the mattress 4 is stretched to make it flat on the upper end surfaces of the main frame 1 and the sub-frame 10.

[0027] The above-mentioned arrangement is provided by providing a horizontal slide groove 7 and a vertical slide groove 8 on the inner side walls of the two horizontal parts of the main frame 1, sliding blocks 9 are movably arranged in the two horizontal slide grooves 7, and the sub-frame 10 is fixedly connected between the two sliding blocks 9, and a first longitudinal support rod 6 flush with the upper end surface of the main frame 1 is arranged on the main frame 1, and a second longitudinal support rod 11 flush with the upper end surface of the sub-frame 10 is arranged on the sub-frame 10. After the sub-frame 10 is adjusted, the upper end surfaces of the main frame 1 and the sub-frame 10 are made flush, so that the mattress 4 can be horizontally stretched out, so that the mattress 4 can be sufficiently supported, thereby improving people's experience, thereby improving the practicality of the sofa bed.

[0028] like Figure 1 As shown, a second universal wheel 18 is connected to the bottom end surface of the telescopic rod 13 , and a first universal wheel 19 is connected to the bottom end surface of the supporting leg 5 .

[0029] By connecting the second universal wheel 18 to the bottom end of the telescopic rod 13, the sub-frame 10 can be easily pushed and pulled, thereby reducing the resistance encountered during the pushing and pulling of the sub-frame 10, thereby improving the convenience of operating the sofa bed; by connecting the first universal wheel 19 to the bottom end of the supporting leg 5, the overall position of the sofa bed can be more conveniently transferred, thereby improving the portability of the sofa bed.

[0030] like Figure 2 As shown, a push-pull handle 20 is fixedly connected to the side wall of the sub-frame 10 close to the opening of the main frame 1. By setting the push-pull handle 20, the sub-frame 10 can be pushed and pulled more conveniently, further improving practicality.

[0031] Working principle: when the sofa bed needs to be adjusted from a sofa shape to a bed shape, the sub-frame 10 is pulled toward the open side of the main frame 1 until the slider 9 is moved to the intersection of the horizontal slide groove 7 and the vertical slide groove 8, and then the telescopic rod 13 is adjusted and pulled down. When the notch of the mounting groove 14 on the telescopic rod 13 is aligned with the fixing hole 17, the fixing protrusion 15 is pushed out of the mounting groove 14 and stuck into the fixing hole 17 under the action of the spring 16. At this time, since the total length of the telescopic sleeve 12 and the telescopic rod 13 becomes longer, the sub-frame 10 will be displaced in the vertical direction, so that the upper end surfaces of the main frame 1 and the sub-frame 10 are flush, and finally the mattress 4 is stretched to make it flat on the upper end surfaces of the main frame 1 and the sub-frame 10.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable push-pull sofa bed frame, comprising a U-shaped main frame body (1) with an opening on one side, characterized in that: A backrest connecting rod (2) is vertically fixedly connected to a side of the upper end surface of the main frame (1) away from the opening, and a backrest (3) is fixedly connected to the top of the backrest connecting rod (2). A mattress (4) is folded and placed on the main frame (1). Support legs (5) are vertically fixedly connected to the four corners of the lower end surface of the main frame (1). A plurality of first longitudinal support rods (6) are fixedly connected between the two transverse parts of the main frame (1). The plurality of first longitudinal support rods (6) are horizontally equidistantly distributed. The upper end surfaces of the first longitudinal support rods (6) are flush with the upper end surface of the main frame (1). The inner side walls of the two transverse parts of the main frame (1) are horizontally provided with transverse sliding grooves (7). A vertical slide groove (8) is vertically connected to one end of the slide groove (7) close to the opening of the main frame (1), and sliders (9) are movably arranged in the two horizontal slide grooves (7). A rectangular sub-frame (10) is fixedly connected between the two sliders (9), and the two sliders (9) are respectively fixedly connected to the two side walls of one end of the sub-frame (10). A plurality of second longitudinal support rods (11) are fixedly connected between the two side walls of the sub-frame (10), and the plurality of second longitudinal support rods (11) are distributed in a equidistant manner in the transverse direction, and the upper end surface of the second longitudinal support rod (11) is flush with the upper end surface of the sub-frame (10), and support components are arranged at the four corners of the lower end surface of the sub-frame (10).

2. A portable push-pull sofa bed frame according to claim 1, characterized in that: The support assembly comprises a telescopic sleeve (12) and a telescopic rod (13); the telescopic sleeve (12) is vertically fixedly connected to the lower end surface of the sub-frame (10); the telescopic rod (13) is telescopically movably arranged in the telescopic sleeve (12); a mounting groove (14) is provided on the side wall of the telescopic rod (13); a fixing protrusion (15) is movably provided at the groove opening of the mounting groove (14); a spring (16) is fixedly connected between the fixing protrusion (15) and the groove bottom of the mounting groove (14); a fixing hole (17) is penetrated through the side wall of the telescopic sleeve (12); the fixing hole (17) is adapted to the fixing protrusion (15).

3. The portable push-pull sofa bed frame according to claim 2, characterized in that: A second universal wheel (18) is connected to the bottom end surface of the telescopic rod (13).

4. The portable push-pull sofa bed frame according to claim 1, characterized in that: A first universal wheel (19) is connected to the bottom end surface of the support leg (5).

5. The portable push-pull sofa bed frame according to claim 1, characterized in that: A push-pull handle (20) is fixedly connected to the side wall of the auxiliary frame (10) close to the opening of the main frame (1).

6. The portable push-pull sofa bed frame according to claim 1, characterized in that: The backrest (3) and the mattress (4) are both made of memory foam material.

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