CN210540157U

CN210540157U - Intelligent sofa capable of automatically switching states

Info

Publication number: CN210540157U
Application number: CN201921497324.5U
Authority: CN
Inventors: 范回云; 代治
Original assignee: Shenzhen Oesenya Furniture Co Ltd
Current assignee: Shenzhen Oesenya Furniture Co Ltd
Priority date: 2019-01-28
Filing date: 2019-09-07
Publication date: 2020-05-19
Anticipated expiration: 2029-09-07

Abstract

The utility model discloses an intelligent sofa capable of automatically switching states, which belongs to the field of intelligent home furnishing and comprises a sofa base, wherein a sofa cushion is fixedly connected onto the sofa base, the sofa cushion is rotationally connected with a leg pad, the sofa cushion is rotationally connected with a backrest pad, the sofa base is provided with a hollow groove, the leg pad is fixedly connected with a support plate, the support plate is fixedly connected with a lower rotating shaft, and a lower gear is fixedly connected onto the lower rotating shaft; the sofa base is fixedly connected with a cylinder body of a lower air cylinder, a piston rod of the lower air cylinder is fixedly connected with a lower rack, and a lower gear is meshed with the lower rack; lower cylinder is connected with control circuit, and control circuit carries out the first pressure comparison module of comparison and the control module to the piston rod control of lower cylinder including the first pressure detection module of the pressure value that detects the back pad and receives, with pressure value and default, the utility model discloses have when the user leans on the back pad of sofa, the leg pad can be lifted up automatically, realizes the effect of the automatic switch-over of intelligent sofa state.

Description

Intelligent sofa capable of automatically switching states

Technical Field

The utility model belongs to the technical field of the technique of intelligence house and specifically relates to an automatic intelligent sofa of switching state is related to.

Background

At present, most families place sofas in residences, and the sofa is a foreign word and is translated according to the English word sofa. Is a multi-seat chair with soft cushions. The back-rest chair with spring or thick foamed plastic has armrests on two sides and is one kind of soft furniture. The sofa is a very popular one in modern home and has a very large variety of shapes. Typically, sofas are sold as sets, with single-seat sofas and multi-seat sofas.

The prior art can refer to the chinese utility model patent of grant bulletin number CN201070151Y, it discloses a sofa, including the adjustable sofa body of shape and arrange sofa cushion, sofa cushion and the sofa handrail pad on this body in, the sofa cushion that can buckle is arranged in on seat and the collapsible shank support frame on the sofa body, corresponds on the envelope of seat and the collapsible shank support frame on sofa cushion and the sofa body and is provided with the link that is used for sofa cushion and sofa body connection location.

The above prior art solutions have the following drawbacks: the sofa can realize the function of switching the lying state and the sitting state of a user, but the switching needs the manual operation of the user, the smart home is more and more popular at present, the sofa needing the manual operation is not enough to meet the requirements of people, and the sofa is needed at present, and the foldable leg support of the sofa can automatically switch the state.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic intelligent sofa of switching state, when the user stacks up by the back of sofa, the leg pad can lift up automatically, realizes the automatic switch-over of intelligent sofa state.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an intelligent sofa capable of automatically switching states comprises a sofa base, wherein a sofa cushion is fixedly connected onto the sofa base, the sofa cushion is rotatably connected with a leg pad, the leg pad can be abutted against one side of the sofa base, one end, far away from the leg pad, of the sofa cushion is rotatably connected with a backrest pad, the sofa base is provided with a hollow groove, one side, close to the sofa base, of the leg pad is fixedly connected with a supporting plate, one end, close to the sofa cushion, of the supporting plate is fixedly connected with a lower rotating shaft, the lower rotating shaft is rotatably connected into the sofa base, the lower rotating shaft is arranged along the width direction of the supporting plate, a lower gear is fixedly connected onto the lower; a cylinder body of a lower air cylinder is fixedly connected to a position, corresponding to the inner part of the empty groove, of the sofa base, a piston rod of the lower air cylinder is perpendicular to the lower rotating shaft, a lower rack is fixedly connected to the piston rod of the lower air cylinder, the lower rack is perpendicular to the lower rotating shaft, a lower gear is meshed with the lower rack, and the lower rack is located below the lower gear; the lower air cylinder is connected with an electromagnet YA1 for controlling the extension of the piston rod of the lower air cylinder and an electromagnet YA2 for controlling the retraction of the piston rod of the lower air cylinder, the electromagnet YA1 and the electromagnet YA2 are connected with a control circuit, and the control circuit comprises:

the first pressure detection module comprises a first pressure sensor fixedly connected in the backrest cushion, and the first pressure sensor detects the pressure applied to the backrest cushion and outputs a first pressure value;

the first pressure comparison module is connected with the first pressure detection module and receives a first pressure value output by the first pressure detection module, the first pressure comparison module compares the first pressure value with a first preset value, and when the first pressure value is larger than the first preset value, the first pressure comparison module outputs a high level signal;

and the control module is connected with the first pressure comparison module and responds to the high level signal output by the first pressure comparison module, the control module controls the electromagnet YA1 to be powered on and the electromagnet YA2 to be powered off after receiving the high level signal, and controls the electromagnet YA2 to be powered on and the electromagnet YA1 to be powered off when not receiving the high level signal.

Through adopting above-mentioned scheme, when the user leaned on the back pad of intelligent sofa, the piston rod of lower cylinder stretches out automatically, drives down the rack and removes to being close to the backup pad direction to gear revolve under the drive, the lower gear drives the lower rotating shaft and rotates, make the backup pad rotate, prop up leg pad, make leg pad be in the tilt state, more be suitable for the user and lie, after the user left the back pad, leg pad automatic fall back vertical state, convenience of customers stands up and sits, improves user's comfort level.

The utility model discloses further set up to: the backrest cushion is fixedly connected with a backrest framework, one end, close to the sofa base, of the backrest framework is fixedly connected with an upper rotating shaft, the upper rotating shaft is rotatably connected into the sofa base and is parallel to the lower rotating shaft, an upper gear is fixedly connected onto the upper rotating shaft, and the upper gear and the upper rotating shaft are coaxial; the sofa base corresponds the cylinder body of cylinder on the fixedly connected with of dead slot inside position department, goes up the piston rod perpendicular to of cylinder and goes up the axis of rotation setting, goes up the rack on the piston rod fixedly connected with of cylinder, goes up the axis of rotation setting on the rack perpendicular to, goes up the gear and meshes on last rack.

Through adopting above-mentioned scheme, the user can drive the rack through controlling to remove, drives gear revolve, goes up gear revolve and rotates and drive last axis of rotation and rotate, goes up the axis of rotation and drives back skeleton and rotate, controls the inclination of back pad, makes the user when needs lie, and the back pad can put down, makes the user lie more comfortable.

The utility model discloses further set up to: the upper rack is positioned below the upper gear, the upper cylinder is connected with an electromagnet YA3 for controlling the retraction of a piston rod of the upper cylinder and an electromagnet YA4 for controlling the extension of the piston rod of the upper cylinder, the electromagnet YA3 and the electromagnet YA4 are connected with a control circuit, the electromagnet YA3 is controlled to be powered on after the control module receives a high level signal, the electromagnet YA4 is powered off, and the electromagnet YA4 is controlled to be powered on and the electromagnet YA3 is powered off when the control module does not receive the high level signal.

By adopting the scheme, when a user lies down, the piston rod of the lower air cylinder can be automatically retracted to drive the backrest cushion to overturn downwards without manual operation.

The utility model discloses further set up to: correspond last rack both sides and the equal fixedly connected with splint of rack both sides position department down at sofa base, correspond the equal fixedly connected with slider in last rack both sides and rack both sides down, correspond slider position department at every splint and all seted up the spout, the spout sets up along the length direction of rack down, the equal sliding connection of every slider in the spout that corresponds.

Through adopting above-mentioned scheme, the spout can make upper rack and lower rack motion more stable.

The utility model discloses further set up to: the control circuit further includes:

the second pressure detection module comprises a second pressure sensor fixedly connected in the sofa cushion, and the second pressure sensor detects the pressure received by the sofa cushion and outputs a second pressure value;

the second pressure comparison module is connected with the second pressure detection module and receives a second pressure value output by the second pressure detection module, the second pressure comparison module compares the second pressure value with a second preset value, and when the second pressure value is higher than the second preset value, the second pressure comparison module outputs a starting signal;

the control module comprises a starting unit which is connected with the second pressure comparison module and responds to a starting signal output by the second pressure comparison module, and when the starting unit does not receive the starting signal, the starting unit controls the electromagnet YA1, the electromagnet YA2, the electromagnet YA3 and the electromagnet YA4 to be de-energized.

By adopting the scheme, after a user sits on the sofa cushion, the upper air cylinder and the lower air cylinder are electrified, so that the electric power is saved, and the condition that the sofa is switched suddenly due to the fact that the sofa backrest cushion is pressed by mistake is avoided.

The utility model discloses further set up to: the first pressure detection module comprises an electrifying unit which is connected with the second pressure comparison module and responds to the starting signal output by the second pressure comparison module, and when the electrifying unit does not receive the starting signal, the electrifying unit controls the first pressure sensor to be powered off.

Through adopting above-mentioned scheme, when the user does not sit on the sofa cushion, first pressure sensor does not switch on, further practices thrift electric power.

The utility model discloses further set up to: the cleaning plate is connected to the position, corresponding to the bottom of the empty groove, of the sofa base in a sliding mode, slides along the length direction of the sofa base and can slide out of one end, close to the supporting plate, of the sofa base.

Through adopting above-mentioned scheme, because the callus on the sole can lift up, can expose sofa base's dead slot, make sofa base inside deposit debris easily, the inside debris of sofa base can be accepted to the cleaning plate, and the user regularly takes out the cleaning plate and washs the piling up that can effectively reduce the interior debris of dead slot.

The utility model discloses further set up to: one end of the cleaning plate close to the supporting plate is fixedly connected with a baffle which is perpendicular to the cleaning plate.

By adopting the scheme, the baffle can reduce the probability that external sundries enter the empty groove, and a user can conveniently take out the cleaning plate.

To sum up, the utility model discloses following beneficial effect has:

1. when a user leans against the backrest cushion of the intelligent sofa, the piston rod of the lower air cylinder automatically extends out to drive the lower rack to move towards the direction close to the support plate, so that the lower gear is driven to rotate, the lower gear drives the lower rotating shaft to rotate, the support plate rotates, the leg cushion is supported, the leg cushion is in an inclined state and is more suitable for the user to lie, and after the user leaves the backrest cushion, the leg cushion automatically falls back to a vertical state, so that the user can conveniently stand up and sit up, and the use comfort level of the user is improved;

2. the user can drive the upper rack to move by controlling the upper air cylinder to drive the upper gear to rotate, the upper gear rotates to drive the upper rotating shaft to rotate, the upper rotating shaft drives the backrest framework to rotate to control the inclination angle of the backrest cushion, so that the backrest cushion can be put down when the user needs to lie, and the user can lie more comfortably;

3. when a user lies down, the piston rod of the lower air cylinder can be automatically retracted to drive the backrest cushion to overturn downwards without manual operation;

4. after a user sits on the sofa cushion, the upper air cylinder and the lower air cylinder are electrified, so that the electric power is saved, and the condition that the sofa is suddenly switched due to the fact that the sofa backrest cushion is pressed by mistake is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an exploded view of the embodiment highlighting the sofa base;

FIG. 3 is a sectional view of a protruding hollow groove in the embodiment;

FIG. 4 is an exploded view of the embodiment highlighting the upper and lower cylinder configuration;

FIG. 5 is a sectional view of the embodiment highlighting a first pressure sensor and a second pressure sensor;

FIG. 6 is a schematic circuit diagram highlighting a second pressure detection module and a second pressure comparison module in an embodiment;

FIG. 7 is a schematic circuit diagram highlighting a first pressure detection module and a first pressure comparison module in an embodiment;

FIG. 8 is a schematic circuit diagram of a salient control module in an embodiment;

fig. 9 is an exploded view of the protruding cleaning plate in the example.

In the figure, 1, a sofa base; 11. a sofa cushion; 111. a leg pad; 1111. a support plate; 1112. rotating the shaft downwards; 1113. a lower gear; 112. a backrest cushion; 1121. a backrest frame; 1122. rotating the rotating shaft; 1123. an upper gear; 113. a handrail; 12. an empty groove; 13. a lower cylinder; 131. a lower rack; 1311. a slider; 14. an upper cylinder; 141. an upper rack; 15. a splint; 151. a chute; 16. cleaning the plate; 161. a baffle plate; 162. a slide rail; 17. a rectangular groove; 2. a first pressure detection module; 21. a first pressure sensor; 22. an energizing unit; 3. a first pressure comparison module; 4. a second pressure detection module; 41. a second pressure sensor; 5. a second pressure comparison module; 6. a control module; 61. and starting the module.

Detailed Description

Example (b): an intelligent sofa capable of automatically switching states is shown in fig. 1 and fig. 2 and comprises a sofa base 1, a sofa cushion 11 is fixedly connected to the sofa base 1, and armrests 113 are fixedly connected to two sides of the sofa base 1. The sofa seat 11 is pivotally connected to a leg pad 111, and the leg pad 111 can be brought into contact with the sofa base 1. The back cushion 112 is rotatably connected to the end of the sofa cushion 11 far from the leg cushion 111. The leg pad 111 is fixedly connected with a support plate 1111 near one side of the sofa base 1, and the backrest pad 112 is fixedly connected with a backrest framework 1121.

As shown in fig. 3 and 4, the sofa base 1 is provided with a hollow groove 12, one end of the supporting plate 1111 near the sofa cushion 11 is fixedly connected with a lower rotating shaft 1112, the lower rotating shaft 1112 is rotatably connected in the sofa base 1, and the lower rotating shaft 1112 is arranged along the width direction of the supporting plate 1111. The backrest frame 1121 is fixedly connected to an upper rotating shaft 1122 near one end of the sofa base 1, the upper rotating shaft 1122 is rotatably connected to the interior of the sofa base 1, and the upper rotating shaft 1122 is parallel to the lower rotating shaft 1112. The support plate 1111 and the back frame 1121 are each capable of rotating.

As shown in fig. 3 and 4, a lower gear 1113 is fixedly connected to the lower rotary shaft 1112, and the lower gear 1113 is coaxial with the lower rotary shaft 1112. The cylinder body of the lower cylinder 13 is fixedly connected to the sofa base 1 at a position corresponding to the inner part of the empty groove 12, and the piston rod of the lower cylinder 13 is arranged perpendicular to the lower rotating shaft 1112. The piston rod of the lower cylinder 13 is fixedly connected with a lower rack 131, the lower rack 131 is perpendicular to the lower rotating shaft 1112, the lower gear 1113 is meshed with the lower rack 131, and the lower rack 131 is located below the lower gear 1113. An upper gear 1123 is fixedly connected to the upper rotating shaft 1122, and the upper gear 1123 is coaxial with the upper rotating shaft 1122. The sofa base 1 is fixedly connected with a cylinder body of an upper cylinder 14 corresponding to the inner position of the empty slot 12, and a piston rod of the upper cylinder 14 is arranged perpendicular to the upper rotating shaft 1122. The piston rod of the upper cylinder 14 is fixedly connected with an upper rack 141, the upper rack 141 is perpendicular to the upper rotating shaft 1122, the upper gear 1123 is meshed with the upper rack 141, and the upper rack 141 is located below the upper gear 1123. The piston rod of lower cylinder 13 is automatic to be stretched out, drives rack 131 and moves to being close to backup pad 1111 direction down to drive gear 1113 and rotate down, gear 1113 drives lower rotating shaft 1112 and rotates down, makes backup pad 1111 rotate, props up leg pad 111. The upper cylinder 14 drives the upper rack 141 to move, so as to drive the upper gear 1123 to rotate, the upper gear 1123 rotates to drive the upper rotating shaft 1122 to rotate, and the upper rotating shaft 1122 drives the backrest framework 1121 to rotate, so as to control the inclination angle of the backrest cushion 112.

As shown in fig. 3 and 4, the clamping plates 15 are fixedly connected to the sofa base 1 at positions corresponding to both sides of the upper rack 141 and both sides of the lower rack 131. The sliding blocks 1311 are fixedly connected to two sides of the upper rack 141 and two sides of the lower rack 131, the sliding grooves 151 are formed in the positions, corresponding to the sliding blocks 1311, of each clamping plate 15, the sliding grooves 151 are arranged along the length direction of the lower rack 131, and each sliding block 1311 is connected to the corresponding sliding groove 151 in a sliding mode. The sliding groove 151 can make the upper rack 141 and the lower rack 131 move more stably.

As shown in fig. 5 and 6, the upper cylinder 14 is connected to an electromagnet YA3 for controlling the retraction of the piston rod of the upper cylinder 14 and an electromagnet YA4 for controlling the extension of the piston rod of the upper cylinder 14, and the lower cylinder 13 is connected to an electromagnet YA1 for controlling the extension of the piston rod of the lower cylinder 13 and an electromagnet YA2 for controlling the retraction of the piston rod of the lower cylinder 13. The electromagnet YA1, the electromagnet YA2, the electromagnet YA3 and the electromagnet YA4 are commonly connected with a control circuit, and the control circuit comprises a first pressure detection module 2 (see fig. 7), a first pressure comparison module 3 (see fig. 7), a second pressure detection module 4 and a second pressure comparison module 5. The first pressure detection module 2 includes a first pressure sensor 21 fixedly connected to the inside of the backrest cushion 112, and the first pressure sensor 21 detects the pressure applied to the backrest cushion 112 and outputs a first pressure value. The second pressure detecting module 4 includes a second pressure sensor 41 fixedly connected to the inside of the sofa cushion 11, and the second pressure sensor 41 detects the pressure received by the sofa cushion 11 and outputs a second pressure value.

As shown in fig. 6, the second pressure detecting module 4 further includes a power source VCC electrically connected to one end of the second pressure sensor 41, and the other end of the second pressure sensor 41 is grounded. The second pressure comparing module 5 includes a comparator T1 electrically connected to the second pressure sensor 41, a positive input terminal of the comparator T1 is electrically connected to the second pressure sensor, and a second preset value Vref2 is inputted from a negative input terminal of the comparator T1 to the comparator T1. The output end of the comparator T1 is electrically connected with a triode Q1, and the base electrode of the triode Q1 is electrically connected with the output end of the comparator T1. The collector of the triode Q1 is electrically connected with a resistor R1, and the other end of the resistor R1 is electrically connected with a power supply VCC. The emitter of the triode Q1 is electrically connected with an electromagnetic coil KA1, and the other end of the electromagnetic coil KA1 is grounded.

As shown in fig. 7, the first pressure detecting module 2 further includes an energizing unit 22, the energizing unit 22 includes a normally open contact KA1-1 electrically connected to one end of the first pressure sensor 21, the other end of the normally open contact KA1-1 is electrically connected to a power VCC, and the other end of the first pressure sensor 21 is grounded. The first pressure comparing module 3 includes a comparator T2 electrically connected to the first pressure sensor 21, a positive input terminal of a comparator T2 is electrically connected to the first pressure sensor, and a first preset value Vref1 is inputted from a negative input terminal of the comparator T2 to the comparator T2. The output end of the comparator T2 is electrically connected with a triode Q2, and the base electrode of the triode Q2 is electrically connected with the output end of the comparator T2. The collector of the triode Q2 is electrically connected with a resistor R2, and the other end of the resistor R2 is electrically connected with a power supply VCC. The emitter of the triode Q2 is electrically connected with an electromagnetic coil KA2, and the other end of the electromagnetic coil KA2 is grounded.

As shown in fig. 8, the control circuit further comprises a control module 6, wherein the control module 6 comprises an activation unit, and the activation unit comprises a normally open contact KA 1-2. One end of the normally open contact KA1-2 is electrically connected with a power VCC, the other end of the normally open contact KA1-2 is electrically connected with a resistor R3, the other end of the resistor R3 is electrically connected with a normally open contact KA2-1, the other end of the normally open contact KA2-1 is electrically connected with one end of an electromagnet YA1, the other end of the electromagnet YA1 is electrically connected with one end of an electromagnet YA3, the other end of the electromagnet YA3 is electrically connected with a resistor R4, and the other end of the resistor. The electromagnet YA2 and the electromagnet YA4 are connected in parallel at two ends of the normally open contact KA2-1 and the resistor R4, the electromagnet YA2 and the electromagnet YA4 are connected in series, and the electromagnet YA2 and the electromagnet YA4 are also connected in series with the normally closed contact KA2-2 and the resistor R5.

When a user sits on the sofa seat cushion 11, the second pressure sensor 41 detects a second pressure value, the comparator T1 compares the second pressure value with a second preset value Vref2, when the second pressure value is larger than the second preset value Vref2, the comparator T1 outputs a high level signal, it is determined that a heavy object is located on the sofa seat cushion 11, the collector and the emitter of the triode Q1 are conducted, the electromagnetic coil KA1 is powered on, the normally-open contact KA1-1 and the normally-open contact KA1-2 are controlled to be closed, and the first pressure sensor 21 is powered on to start working.

When the user leans against the back cushion 112, the first pressure sensor 21 detects a first pressure value, and the comparator T2 compares the first pressure value with the first preset value Vref1, and when the first pressure value is greater than the first preset value Vref1, the comparator T2 outputs a high level signal, determining that the user leans against the back cushion 112 completely. The comparator T2 will not react when the user leans lightly. The base electrode of the triode Q2 receives a high-level signal, the collector electrode and the emitter electrode of the triode Q2 are conducted, the electromagnetic coil KA2 is electrified, the normally open contact KA2-1 is controlled to be closed, the normally closed contact KA2-2 is controlled to be disconnected, the electromagnet YA1 and the electromagnet YA3 are electrified, the electromagnet YA2 and the electromagnet YA4 are electrified, the piston rod of the upper air cylinder 14 is retracted, the piston rod of the lower air cylinder 13 extends out, the backrest framework 1121 overturns downwards, and the supporting plate 1111 overturns upwards. When the user leaves the back cushion 112, the leg cushion 111 is automatically lowered back to the upright position, and the back cushion 112 is automatically raised.

As shown in fig. 9, a cleaning plate 16 is slidably connected to the sofa base 1 at a position corresponding to the bottom of the empty slot 12, and the cleaning plate 16 slides along the length direction of the sofa base 1 and can slide out from one end of the sofa base 1 near the supporting plate 1111. Slide rails 162 are fixedly connected to two sides of the cleaning plate 16, a rectangular groove 17 is formed in the position, corresponding to the slide rails 162, of the sofa base 1, the rectangular groove 17 is arranged along the length direction of the sofa base 1, and the slide rails 162 are slidably connected in the rectangular groove 17. A baffle plate 161 is fixedly connected to one end of the cleaning plate 16 close to the supporting plate 1111, and the baffle plate 161 is arranged perpendicular to the cleaning plate 16. As the foot pad can be lifted up, the empty groove 12 of the sofa base 1 can be exposed, so that sundries can be easily accumulated in the sofa base 1, the cleaning plate 16 can bear the sundries in the sofa base 1, and the user can effectively reduce the accumulation of the sundries in the empty groove 12 by regularly pulling out the cleaning plate 16 for cleaning.

The use method comprises the following steps: when a user leans on the backrest cushion 112 of the intelligent sofa, the leg cushion 111 is in an inclined state, and the backrest cushion 112 can be put down, so that the intelligent sofa is more suitable for the user to lie. After the user leaves the backrest cushion 112, the leg cushion 111 and the backrest cushion 112 automatically rotate back to the original state, so that the user can get up and sit up conveniently, and the use comfort of the user is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an automatic intelligent sofa of switching state, includes sofa base (1), fixedly connected with sofa cushion (11) on sofa base (1), and sofa cushion (11) rotate and are connected with leg pad (111), and leg pad (111) can butt in sofa base (1) one side, keeps away from leg pad (111) one end in sofa cushion (11) and rotates and be connected with back pad (112), its characterized in that: the sofa seat (1) is provided with a hollow groove (12), one surface, close to the sofa seat (1), of the leg pad (111) is fixedly connected with a supporting plate (1111), one end, close to the sofa cushion (11), of the supporting plate (1111) is fixedly connected with a lower rotating shaft (1112), the lower rotating shaft (1112) is rotatably connected into the sofa seat (1), the lower rotating shaft (1112) is arranged along the width direction of the supporting plate (1111), a lower gear (1113) is fixedly connected onto the lower rotating shaft (1112), and the lower gear (1113) and the lower rotating shaft (1112) are coaxial; a cylinder body of a lower cylinder (13) is fixedly connected to the position, corresponding to the inner part of the empty groove (12), of the sofa base (1), a piston rod of the lower cylinder (13) is perpendicular to a lower rotating shaft (1112), a piston rod of the lower cylinder (13) is fixedly connected with a lower rack (131), the lower rack (131) is perpendicular to the lower rotating shaft (1112), a lower gear (1113) is meshed with the lower rack (131), and the lower rack (131) is located below the lower gear (1113); the lower air cylinder (13) is connected with an electromagnet YA1 for controlling the extension of the piston rod of the lower air cylinder (13) and an electromagnet YA2 for controlling the retraction of the piston rod of the lower air cylinder (13), the electromagnet YA1 and the electromagnet YA2 are connected with a control circuit, and the control circuit comprises:

the first pressure detection module (2), the first pressure detection module (2) comprises a first pressure sensor (21) fixedly connected in the backrest cushion (112), and the first pressure sensor (21) detects the pressure applied to the backrest cushion (112) and outputs a first pressure value;

the first pressure comparison module (3) is connected with the first pressure detection module (2) and receives a first pressure value output by the first pressure detection module (2), the first pressure comparison module (3) compares the first pressure value with a first preset value, and when the first pressure value is larger than the first preset value, the first pressure comparison module (3) outputs a high level signal;

and the control module (6) is connected with the first pressure comparison module (3) and responds to a high level signal output by the first pressure comparison module (3), the electromagnet YA1 is controlled to be powered on and the electromagnet YA2 is controlled to be powered off after the control module (6) receives the high level signal, and the electromagnet YA2 is controlled to be powered on and the electromagnet YA1 is controlled to be powered off when the control module (6) does not receive the high level signal.

2. The intelligent sofa capable of automatically switching states according to claim 1, wherein: the backrest cushion (112) is fixedly connected with a backrest framework (1121), one end, close to the sofa base (1), of the backrest framework (1121) is fixedly connected with an upper rotating shaft (1122), the upper rotating shaft (1122) is connected into the sofa base (1) in a rotating mode, the upper rotating shaft (1122) is parallel to the lower rotating shaft (1112), an upper gear (1123) is fixedly connected onto the upper rotating shaft (1122), and the upper gear (1123) and the upper rotating shaft (1122) are coaxial; the sofa base (1) is fixedly connected with a cylinder body of an upper air cylinder (14) corresponding to the inner position of the empty groove (12), a piston rod of the upper air cylinder (14) is perpendicular to the upper rotating shaft (1122), a piston rod of the upper air cylinder (14) is fixedly connected with an upper rack (141), the upper rack (141) is perpendicular to the upper rotating shaft (1122), and an upper gear (1123) is meshed on the upper rack (141).

3. The intelligent sofa capable of automatically switching states according to claim 2, wherein: the upper rack (141) is positioned below the upper gear (1123), the upper air cylinder (14) is connected with an electromagnet YA3 for controlling the piston rod of the upper air cylinder (14) to retract and an electromagnet YA4 for controlling the piston rod of the upper air cylinder (14) to extend, the electromagnet YA3 and the electromagnet YA4 are connected with a control circuit, the electromagnet YA3 is controlled to be powered on after the control module (6) receives a high-level signal, the electromagnet YA4 is powered off, and the electromagnet YA4 is controlled to be powered on and the electromagnet YA3 is powered off when the control module (6) does not receive the high-level signal.

4. The intelligent sofa capable of automatically switching states according to claim 2, wherein: correspond rack (141) both sides and lower rack (131) both sides position department equal fixedly connected with splint (15) in sofa base (1), correspond slider (1311) in last rack (141) both sides and lower rack (131) both sides, correspond slider (1311) position department at every splint (15) and have all seted up spout (151), the length direction setting of rack (131) down is followed in spout (151), the equal sliding connection of every slider (1311) is in corresponding spout (151).

5. The intelligent sofa capable of automatically switching states of claim 3, wherein the control circuit further comprises:

the second pressure detection module (4), the second pressure detection module (4) comprises a second pressure sensor (41) fixedly connected in the sofa cushion (11), and the second pressure sensor (41) detects the pressure received by the sofa cushion (11) and outputs a second pressure value;

the second pressure comparison module (5) is connected with the second pressure detection module (4) and receives a second pressure value output by the second pressure detection module (4), the second pressure comparison module (5) compares the second pressure value with a second preset value, and when the second pressure value is higher than the second preset value, the second pressure comparison module (5) outputs a starting signal;

the control module (6) comprises a starting unit which is connected with the second pressure comparison module (5) and responds to a starting signal output by the second pressure comparison module (5), and when the starting unit does not receive the starting signal, the starting unit controls the electromagnets YA1, YA2, YA3 and YA4 to be de-energized.

6. The intelligent sofa capable of automatically switching states of claim 5, wherein: the first pressure detection module (2) comprises an electrifying unit (22), the electrifying unit (22) is connected with the second pressure comparison module (5) and responds to the starting signal output by the second pressure comparison module (5), and when the electrifying unit (22) does not receive the starting signal, the electrifying unit (22) controls the first pressure sensor (21) to lose power.

7. The intelligent sofa capable of automatically switching states according to claim 1, wherein: the cleaning plate (16) is connected to the bottom of the empty groove (12) corresponding to the sofa base (1) in a sliding mode, the cleaning plate (16) slides along the length direction of the sofa base (1) and can slide out of one end, close to the supporting plate (1111), of the sofa base (1).

8. The intelligent sofa capable of automatically switching states of claim 7, wherein: one end of the cleaning plate (16) close to the supporting plate (1111) is fixedly connected with a baffle plate (161), and the baffle plate (161) is perpendicular to the cleaning plate (16).