Folding sofa

Abstract

The utility model discloses a folding sofa which comprises a backrest, a first cushion and a second cushion, the first cushion and the second cushion are hinged to each other, armrests are fixedly connected to the two sides of the cushions, an elastic piece is arranged in the first cushion, a photosensitive assembly is detachably connected to the side, away from the ground, of the backrest, and LED lamps electrically connected with the photosensitive assembly are arranged on the two sides, in the length direction, of the backrest. A power transmission device is arranged in the first cushion, a power supply device is arranged in the side wall of the first cushion, a plurality of connecting pieces are fixedly connected to the side, close to the ground, of the elastic piece, and an electrifying device is fixedly connected to the side, close to the supporting plate, of the connecting piece opposite to the power transmission device. When the contact area of the energizing device and the power supply device is increased and the ambient brightness is lower than 2500lux, the LED lamp is energized to emit light, the photosensitive component and the sensing device are arranged on the sofa, and when the sofa is used by a user and the ambient light is dim, the sofa can be automatically lightened, so that the use functions of the sofa are increased.

Description

Technical Field

[0001] This utility model relates to the field of sofa technology, and more specifically, to a folding sofa. Background Technology

[0002] Folding sofas are a type of furniture with a special design. Their main feature is their foldability. Folding sofas meet the needs of people sitting, lying down, and relaxing in limited spaces with their ingenious multi-fold design. This design allows the sofa to be easily folded up when not in use to save space.

[0003] Existing folding sofas include additional lighting fixtures to facilitate turning on the lights when the ambient light is dim. However, it is difficult for people to constantly notice the surrounding light while reading and to turn on the lights in time. Reading in dim environments can harm the user's eyes. Therefore, a new solution is needed to address the problem of the sofa lights not being able to be turned on promptly when the user is using the sofa in a dimly lit environment. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a folding sofa that, by incorporating a sensing device and a photosensitive component, enables the LED lights on the sofa to be powered on and illuminated in low-light conditions.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A folding sofa includes a backrest and two hinged seat cushions, the backrest and seat cushions are fixedly connected, armrests are fixedly connected to both sides of the seat cushions along their length, an elastic element is provided inside the seat cushions, a photosensitive component is detachably connected to the side of the backrest away from the ground, and LED lights electrically connected to the photosensitive component are detachably connected to both sides of the backrest along their length, a cavity for accommodating the elastic element is provided inside the seat cushions, a U-shaped power transmission device is fixedly connected to the bottom surface of the cavity, a power supply device electrically connected to the power transmission device is detachably connected to the side wall of the seat cushions, several connecting parts are fixedly connected to the side of the elastic element near the ground, and a power supply device is fixedly connected to the connecting parts located directly above the power transmission device on the side near the support plate, and the LED lights are powered on and illuminated when the contact area between the power supply device and the power supply device increases and the ambient brightness is below 2500 lux.

[0006] The present invention is further configured such that: the power supply device includes two insulating sheets and a conductive plate, the two insulating sheets are respectively fixedly connected to both sides of the conductive plate in the height direction, the side of the insulating sheet located away from the ground on the conductive plate is fixedly connected to the connector, and the conductive plate is slidably connected to the side wall of the power transmission device.

[0007] The present invention is further configured such that: the power transmission device includes two conductive blocks and an insulating block, the insulating block is fixedly connected to the upper surface of the support plate, the side of the insulating block away from the support plate is fixedly connected to the two conductive blocks, and the conductive plate and the insulating sheet are slidably connected to the sides of the two conductive plates that are close to each other.

[0008] The present invention is further configured such that: at least a portion of the two sidewalls of the two conductive blocks that are close to each other overlap with the insulating sheet disposed at the bottom of the conductive plate; and the distance between the conductive plate and the ground is greater than the distance between the upper surface of the conductive block and the ground.

[0009] The present invention is further configured such that: ventilation grooves are provided on both side walls of the first cushion, the ventilation grooves are connected to the cavity and the outside, and an O-shaped support is fixedly connected to the inner wall of the ventilation groove, and the power supply device is detachably connected to the inner wall of the support.

[0010] The present invention is further configured such that: a support plate is fixedly connected to the bottom surface of the cavity, and the power transmission device is fixedly connected to the side of the support plate away from the bottom surface of the cavity.

[0011] In summary, this utility model has the following beneficial effects: A folding sofa has a conductive plate and a conductive block installed below the elastic element in the seat cushion. When the user applies pressure to the elastic element using the sofa, the elastic element bends downward under the pressure, causing the conductive plate and the conductive block to come closer together, thereby closing the circuit and energizing it. An LED light and a photosensitive component are installed on the backrest, which are electrically connected to the power supply device. When the ambient brightness is below 2500 lux, the resistance of the photosensitive component increases to the point that the LED light can emit light, achieving the effect that the LED light can automatically light up when the user sits on the seat cushion in a dimly lit environment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-section of the present invention. Figure 1 ;

[0014] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This is a cross-section of the present invention. Figure 2 .

[0016] In the diagram: 1. Backrest; 2. Seat cushion one; 3. Seat cushion two; 4. Armrest; 5. Elastic component; 6. Photosensitive component; 7. LED light; 8. Cavity; 9. Connector; 10. Power supply device; 11. Insulating sheet; 12. Conductive plate; 13. Conductive block; 14. Insulating block; 15. Ventilation groove; 16. Support component; 17. Support plate. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] A type of folding sofa, such as Figures 2-3 As shown, the sofa includes a backrest 1 and two hinged seat cushions 2 and 3. The backrest 1 and seat cushion 3 are welded together. Armrests 4 are welded to both sides of the seat cushion 2 along its length. When the sofa needs to be unfolded, the seat cushion 2 is rotated to separate it from the seat cushion 3. The seat cushion 2 will cause the armrests 4 to flip, so that the end of the armrest 4 away from the seat cushion 2 touches the ground, thus lengthening the sofa. Elastic elements 5 are provided inside the seat cushions 2 and 3. The elastic elements 5 are set as several serpentine springs. The setting of the elastic elements 5 can improve the comfort of people when using the sofa. Sponges are set on the upper and lower sides of the elastic elements 5. The sponges can further improve the comfort of the sofa when using it. The setting on the upper and lower sides can ensure that the seat cushion 2 still maintains a certain degree of comfort after flipping.

[0019] like Figures 1-4 As shown, a photosensitive component 6 is detachably connected to the side of the backrest 1 away from the ground. LED lights 7, electrically connected to the photosensitive component 6, are detachably connected to both sides of the backrest 1 along its length. When the ambient brightness is below 2500 lux, the resistance of the photosensitive component 6 increases sufficiently to make the LED lights 7 emit light. The LED lights 7, positioned on both sides of the backrest 1, can reduce the light emitted to the user's eyes, better protecting the user's eyes. A cavity 8 for accommodating the elastic element 5 is provided inside the seat cushion 2. A power transmission device is adhered to the bottom surface of the cavity 8. A power supply device 10, electrically connected to the power transmission device, is detachably connected to the side wall of the seat cushion 2. An elastic element 5 is provided on the side closest to the ground. Three connectors 9 are connected together with several serpentine springs by winding steel wire. A power supply device is welded to the side of the connector 9 near the support plate 17. The power supply device is located directly above the power transmission device. When it moves downward, the outer wall of the power supply device fits against the inner wall of the power transmission device. When people sit on the cushion 2, it will exert pressure on the cushion 2. The pressure is transmitted to the elastic element 5, causing the elastic element 5 to bend downward. This causes the power supply device to slide downward on the inner wall of the power transmission device. The increased contact area between the power supply device and the power supply device 10 can close the circuit. At this time, if the ambient brightness is lower than 2500 lux, the LED light 7 will emit light.

[0020] like Figure 2 and Figure 3As shown, the power transmission device includes a conductive plate 12 and two insulating sheets 11 fixedly connected to the upper and lower sides of the conductive plate 12. One insulating sheet 11 is welded to the bottom surface of the connector 9 and the top surface of the conductive plate 12 on both sides, and the other insulating sheet 11 is welded to the side of the conductive plate 12 away from the connector 9. The insulating sheet 11 can effectively reduce the probability of electric shock to the human body when electrical energy is leaked in the circuit. The power transmission device includes two conductive blocks 13 and an insulating block 14. The insulating block 14 has the same effect as the insulating sheet 11. The insulating block 14 is welded to the upper surface of the support plate 17. The side of the insulating block 14 away from the support plate 17 is welded to the two conductive blocks 13. The conductive plate 12 and the two insulating sheets 11 are slidably connected to the two sides of the two conductive blocks 13 that are close to each other. When the conductive plate 12 and the conductive blocks When the contact area of ​​13 is greater than zero, the circuit is closed and energized. As long as there is contact between the conductive block 13 and the conductive plate 12, the circuit can remain closed. Therefore, the circuit can continue to be energized even when the user moves slightly. The two side walls of the two conductive blocks 13 that are close to each other overlap with the insulating sheet 11 set at the bottom of the conductive plate 12 in at least part. In the initial state, the insulating sheet 11 is between the two conductive blocks 13, so that the conductive plate 12 will never leave the track during the movement. The distance between the conductive plate 12 and the ground is greater than the distance between the upper surface of the conductive block 13 and the ground. When the cushion 12 is not under pressure, the contact area between the conductive plate 12 and the conductive block 13 is zero and no electricity is energized. This ensures that the circuit will only close and the LED will light up when both the ambient brightness and the cushion 12 is under pressure.

[0021] like Figure 2 and Figure 3 As shown, both side walls of the cushion 2 have through grooves that connect to the cavity 8 and the outside. When powered on, the circuit generates heat. The through grooves increase the contact area between the cavity 8 and the outside air, reducing heat accumulation inside the cavity 8 and thus achieving heat dissipation. O-shaped support members 16 are physically bonded to the inner wall of the through grooves. Support members 16 improve the structural strength of the sofa and enhance the structural stability of the through grooves. A power supply device 10 is detachably connected to the inner wall of the support member 16. When the stored power of the power supply device 10 is completely depleted, it can be removed and replaced. The bottom surface of the cavity 8... A support plate 17 is provided and welded to the overall frame of the sofa. Since the circuit connection generates heat, direct contact with the sponge would affect the heat dissipation of the power transmission device. Placing the power transmission device on the side of the support plate 17 away from the bottom surface of the cavity 8 can effectively reduce the probability of the power transmission device's heat dissipation being affected. At the same time, when the sofa is in the unfolded state, the sponge is easily deformed by the gravity of the conductive block 13 and cannot support the conductive block 13 well. The support plate 17 can provide better support for the power transmission device and reduce the probability of the conductive block 13 sliding and turning on the LED light 7 due to gravity.

[0022] Working principle: A folding sofa, when folded, when people sit on the cushion 2, the pressure on the cushion 2 is transmitted to the elastic element 5, causing the elastic element 5 to deform and bend downward. The bending of the elastic element 5 causes the insulating sheet 11 and the conductive plate 12 to slide downward on the side wall of the conductive block 13. When the contact area between the conductive plate 12 and the conductive block 13 is greater than zero, the circuit is closed and energized. The electrical energy in the power supply device 10 can be transferred to the LED light 7. At this time, if the ambient brightness is lower than 2500 lux, the resistance of the photoresistor increases to a level sufficient to make the LED light 7 emit light. The ventilation groove 15 provided on the side wall of the cushion 2 can better dissipate heat inside the cavity 8.

[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A folding sofa, comprising a backrest (1) and two hinged seat cushions, a first seat cushion (2) and a second seat cushion (3), wherein the backrest (1) and the second seat cushion (3) are fixedly connected, and armrests (4) are fixedly connected to both sides of the first seat cushion (2) along its length, and an elastic element (5) is provided inside the first seat cushion (2), characterized in that: A photosensitive component (6) is detachably connected to the side of the backrest (1) away from the ground. LED lights (7) electrically connected to the photosensitive component (6) are detachably connected to both sides of the backrest (1) along its length. A cavity (8) for accommodating an elastic element (5) is provided in the seat cushion (2). A U-shaped power transmission device is fixedly connected to the bottom surface of the cavity (8) via a support plate (17). A power supply device (10) electrically connected to the power transmission device is detachably connected to the side wall of the seat cushion (2). Several connectors (9) are fixedly connected to the side of the elastic element (5) near the ground. A power supply device is fixedly connected to the side of the connector (9) directly above the power transmission device near the support plate (17). When the contact area between the power supply device and the power supply device (10) increases and the ambient brightness is below 2500 lux, the LED light (7) is powered on and emits light.

2. A folding sofa according to claim 1, characterized in that: The power supply device includes two insulating sheets (11) and a conductive plate (12). The two insulating sheets (11) are fixedly connected to both sides of the conductive plate (12) in the height direction. The side of the insulating sheet (11) located away from the ground of the conductive plate (12) is fixedly connected to the connector (9). The conductive plate (12) is slidably connected to the side wall of the power transmission device.

3. A folding sofa according to claim 2, characterized in that: The power transmission device includes two conductive blocks (13) and an insulating block (14). The insulating block (14) is fixedly connected to the upper surface of the support plate (17). The side of the insulating block (14) away from the support plate (17) is fixedly connected to the two conductive blocks (13). The conductive plate (12) and the insulating sheet (11) are slidably connected to the sides of the two conductive plates (12) that are close to each other.

4. A folding sofa according to claim 3, characterized in that: The two sidewalls of the two conductive blocks (13) that are close to each other overlap with at least part of the insulating sheet (11) set at the bottom of the conductive plate (12). The distance between the conductive plate (12) and the ground is greater than the distance between the upper surface of the conductive block (13) and the ground.

5. A folding sofa according to claim 2, characterized in that: Ventilation grooves (15) are provided on both side walls of the seat cushion (2). The ventilation grooves (15) are connected to the cavity (8) and the outside. An O-shaped support (16) is fixedly connected to the inner wall of the ventilation groove (15). The power supply device (10) is detachably connected to the inner wall of the support (16).

6. A folding sofa according to claim 5, characterized in that: A support plate (17) is fixedly connected to the bottom surface of the cavity (8), and the power transmission device is fixedly connected to the side of the support plate (17) away from the bottom surface of the cavity (8).

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