Electric lying sofa for motor home

Abstract

The utility model relates to the technical field of recreational vehicle facilities, in particular to an electric lying sofa for a recreational vehicle, which comprises a sofa frame body, a backrest part, an expansion plate and a driving mechanism, the backrest part is connected to the sofa frame body, the upper end of the expansion plate is rotatably connected to one side, far away from the backrest part, of the sofa frame body, the rotating axis of the expansion plate is horizontal, and the driving mechanism is connected to the sofa frame body. The driving mechanism is used for driving the expansion plates to rotate. When a user needs to have a rest, the driving mechanism drives the expansion plate to unfold, the area of the sofa is increased, the legs of the user can be flatly placed, the activity space of the user on the sofa is increased, the comfort degree of the user is improved, and when the sofa is not used, the expansion plate is contracted, the occupied space of the sofa is reduced, and enough space is reserved for people in a vehicle to pass through.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a house car facility, in particular to an electric lying sofa for a house car. BACKGROUND

[0002] With the improvement of living standards and the rapid development of transportation tools, house car travel is favored by more and more people as a new travel way. The house car not only plays a role of walking, but also has strong multifunctionality. The house car compartment is often provided with a rest bed, a sofa-tea table combination, a washstand and a bathroom, etc. The sofa can be used for people on the car to sit down and rest at any time, and can also meet the needs of people who need to lie down without going to bed.

[0003] At present, due to the small space of the house car, in order to facilitate the passage of personnel, a relatively spacious aisle needs to be reserved in front of the sofa, so that the sofa space is small and cannot provide high comfort for the user. CONTENT OF THE INVENTION

[0004] In order to realize the adjustability of the sofa, adjust the space occupied by the sofa according to the needs, and meet the different use requirements of the user, the application provides an electric lying sofa for a house car.

[0005] The application provides an electric lying sofa for a house car, which adopts the following technical scheme:

[0006] The electric lying sofa for a house car comprises a sofa frame body, a backrest part, an expansion plate and a driving mechanism. The backrest part is connected to the sofa frame body. The upper end of the expansion plate is rotationally connected to one side of the sofa frame body away from the backrest part. The rotation axis of the expansion plate is horizontal. The driving mechanism is connected to the sofa frame body. The driving mechanism is used for driving the expansion plate to rotate.

[0007] By adopting the above technical scheme, when the user needs to rest, the driving mechanism drives the expansion plate to expand, increases the area of the sofa, and can be used for the user to place the legs, increases the activity space of the user on the sofa, and improves the comfort of the user. When not in use, the expansion plate is retracted, the space occupied by the sofa is reduced, and enough space is left for the personnel in the car to pass through.

[0008] Preferably, the backrest part comprises a connecting plate, a sliding seat one and a sliding seat two, the upper end of the sliding seat one and the connecting plate are hinged, the hinged axis of the sliding seat one and the connecting plate is parallel to the rotating axis of the expansion plate, the lower end of the sliding seat two and the connecting plate are hinged, the hinged axis of the sliding seat two and the connecting plate is parallel to the hinged axis of the sliding seat one and the connecting plate, the sliding seat one is slidingly connected to the sofa frame body, the sliding direction of the sliding seat one is vertical, the sliding seat two is slidingly connected to the sofa frame body, the sliding direction of the sliding seat two is horizontal, the sliding direction of the sliding seat two is perpendicular to the rotating axis of the expansion plate, and the driving mechanism is used for driving the sliding seat two to slide.

[0009] By adopting the above technical scheme, the backrest part is inclined, so that the user can lie flat on the sofa, and the use experience of the user is improved.

[0010] Preferably, the control mechanism is further connected to the sofa frame body, the driving mechanism comprises a driving motor, a first gear, a first rack, a second gear, a second rack, a third reset member, a driving pulley, a driven pulley and a belt body, the first rack is connected to the sliding seat two, the first gear is rotationally connected to the sofa frame body, the rotating axis of the first gear is parallel to the rotating axis of the expansion plate, the first gear is engaged with the second gear, the driving motor is connected to the sofa frame body, the driving motor is used for driving the first gear to rotate, the control mechanism is used for controlling the driving motor to work, the second rack is slidingly connected to the sofa frame body, the sliding direction of the second rack is parallel to the sliding direction of the first rack, one end of the second rack close to the backrest part is used for abutting against the first rack, the second gear is rotationally connected to the sofa frame body, the rotating axis of the second gear is parallel to the rotating axis of the expansion plate, the second gear is engaged with the second rack, the driving pulley is coaxially connected to the second gear, the driven pulley is connected to the expansion plate, the axis of the driven pulley coincides with the rotating axis of the expansion plate, the belt body is sleeved on the outer periphery of the driving pulley and the driven pulley, and the third reset member is connected between the sofa frame body and the second rack.

[0011] By adopting the above technical scheme, the control mechanism controls the driving motor to work, the driving motor drives the first gear to rotate, the first gear and the first rack are engaged, the first rack slides, drives the sliding seat one to slide, drives the lower end of the connecting plate to slide, and drives the sliding seat two to slide, so that the connecting plate rotates to be inclined, the first rack abuts against the second rack to slide against the elastic force of the third reset member, the second rack and the second gear are engaged, drive the second gear to rotate, drive the driving pulley to rotate, drive the driven pulley to rotate through the belt body, drive the expansion plate to rotate, complete the opening of the sofa, and improve the use experience of the user.

[0012] Preferably, the driven pulleys are provided in two, and the two driven pulleys are symmetrically distributed along the expansion plate rotation axis, the first gear, the first rack, the second gear, the second rack, the third return member, the driving pulley and the belt are the same in number as the driven pulleys and one-to-one corresponding.

[0013] By adopting the above technical scheme, the expansion plate is uniformly stressed, the stability of the expansion plate rotation is improved, the stress between the first gear and the first rack, between the second gear and the second rack, between the driving pulley and the belt and between the driven pulley and the belt is dispersed, the possibility of damage of the first gear, the first rack, the second gear, the second rack, the driving pulley, the driven pulley and the belt is reduced, and the service life of the driving mechanism is improved.

[0014] Preferably, the control mechanism comprises a button, a first return member, a moving contact piece, a fixed contact piece and a processor, the fixed contact piece is connected to the sofa frame body, the moving contact piece is slidingly connected to the sofa frame body, the moving contact piece and the fixed contact piece are electrically connected to the processor, the processor is used for controlling the driving motor to work, the button is rotatably connected to the sofa frame body, the moving contact piece is connected to the button, the first return member is connected between the button and the sofa frame body, the first return member makes the moving contact piece have a tendency to move away from the fixed contact piece, and the driving motor works when the moving contact piece and the fixed contact piece are in contact.

[0015] By adopting the above technical scheme, by pressing the button, the moving contact piece abuts against the fixed contact piece, the circuit is communicated, the processor sends a signal to the driving motor, the driving motor is controlled to work, the backrest part and the expansion plate are moved, the sofa is opened and stored, the first return member is provided, the possibility of mistakenly touching the button is reduced, and the possibility of opening the sofa is reduced.

[0016] Preferably, the button is provided with an indication mark on the side away from the contact switch, the indication mark is provided in two, and the number of the moving contact piece and the fixed contact piece is the same as the number of the indication mark and one-to-one corresponding.

[0017] By adopting the above technical scheme, the indication mark is provided for helping the user to distinguish the button for opening or storing the sofa, the possibility of misoperation is reduced, and the possibility of damage of the driving mechanism parts is reduced.

[0018] Preferably, the control mechanism further comprises a connecting seat, a first magnetic block, a second magnetic block, a locking block and a second reset member, the number of the connecting seat, the first magnetic block, the second magnetic block, the locking block and the second reset member is same as and corresponds to the number of the movable contact piece, the connecting seat is connected to the side of the movable contact piece close to the button, the first magnetic block is connected to the side of the connecting seat close to the button, the second magnetic block is connected to the side of the button close to the connecting seat, the second magnetic block and the first magnetic block attract each other, the locking block is slidingly connected to the sofa frame body, the sliding direction of the locking block is perpendicular to the sliding direction of the movable contact piece, the side wall of the connecting seat is provided with a locking groove for embedding the locking block, and the second reset member is connected between the locking block and the sofa frame body, so that the locking block has a tendency to embed in the locking groove.

[0019] By adopting the above technical scheme, the button is pressed, the button pushes the connecting seat to slide, the movable contact piece abuts against the fixed contact piece, the locking block is embedded in the locking groove under the elastic force of the second reset member, the relative fixation of the sliding seat and the sofa frame body is realized, the user does not need to press the button for a long time during the operation process, and the comfort of the user is improved.

[0020] Preferably, the control mechanism further comprises an abutting rod, the number of the abutting rod is same as and corresponds to the number of the locking block, one end of the abutting rod is connected to the locking block, and the other end of the locking block is used for abutting against the second sliding seat.

[0021] By adopting the above technical scheme, when the backrest part is located at two limit positions, the second sliding seat abuts against the abutting rod, drives the locking block to overcome the elastic force of the second reset member and separate from the locking groove, the relative fixation of the sliding seat and the sofa frame body is released, the second magnetic block and the first magnetic block attract each other, the sliding seat slides away from the fixed contact piece, the movable contact piece and the fixed contact piece are separated, and the driving motor stops working.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. When the user needs to rest, the driving mechanism drives the expansion plate to expand, increases the area of the sofa, can place the legs of the user, increases the activity space of the user on the sofa, improves the comfort of the user, when not in use, the expansion plate is retracted, reduces the space occupied by the sofa, and leaves enough space for the personnel in the vehicle to pass through;

[0024] 2. The button is pressed, the button pushes the connecting seat to slide, the movable contact piece abuts against the fixed contact piece, the locking block is embedded in the locking groove under the elastic force of the second reset member, the relative fixation of the sliding seat and the sofa frame body is realized, the user does not need to press the button for a long time during the operation process, and the comfort of the user is improved;

[0025] 3. When the backrest part is located at two limit positions, the sliding seat two abuts against the abutting rod, drives the locking block to overcome the elastic force of the second reset member to separate from the locking slot, releases the relative fixation of the sliding seat and the sofa frame body, makes the second magnetic block and the first magnetic block attract each other, and the sliding seat slides away from the fixed contact piece, so that the moving elastic piece and the fixed elastic piece are separated, and the driving motor stops working. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the electric lying sofa for a house car.

[0027] Figure 2 is a partial sectional view of the electric lying sofa for a house car.

[0028] Figure 3 is a partial sectional view of the electric lying sofa for a house car.

[0029] Figure 4 is a partial sectional view of the electric lying sofa for a house car.

[0030] Figure 5 is a structural schematic diagram of the expansion plate, the driving mechanism, the control mechanism and the sliding seat two.

[0031] Figure 6 is a partial sectional view of the electric lying sofa for a house car.

[0032] Figure 7 is a partial sectional view of the electric lying sofa for a house car.

[0033] Figure 8 is a partial sectional view of the electric lying sofa for a house car, mainly showing the control mechanism.

[0034] BRIEF DESCRIPTION OF DRAWINGS

[0035] 1, sofa body; 11, sofa frame body; 111, base; 1111, containing groove; 1112, mounting cavity; 112, backrest plate; 1121, first limiting slot; 113, armrest; 1131, communicating groove; 1132, second limiting slot; 1133, mounting slot; 1134, adjusting cavity; 1135, rotating slot; 1136, sliding cavity; 1137, locking cavity; 1138, connecting cavity; 12, backrest part; 121, connecting plate; 1211, connecting shaft; 122, sliding seat one; 123, sliding seat two; 13, expansion plate; 131, rotating shaft; 132, first embedding slot; 133, groove; 134, second embedding slot; 135, connecting slot; 16, sponge pad;

[0036] 2, drive mechanism; 21, drive motor; 22, first gear; 23, first rack; 231, abutting block; 24, second gear; 25, second rack; 26, third return member; 27, driving pulley; 28, driven pulley; 29, belt body;

[0037] 3, control mechanism; 31, button; 311, indicating mark; 312, rotating rod; 32, first return member; 33, moving contact; 34, fixed contact; 35, connecting seat; 351, locking groove; 36, first magnetic block; 37, second magnetic block; 38, locking block; 39, second return member; 310, abutting rod. DETAILED DESCRIPTION

[0038] The application will be further described in detail below with reference to the accompanying drawings.

[0039] Reference Figure 1 The embodiment of the application discloses a kind of electric lying sofa for motor home, including sofa body 1.Sofa body 1 includes sofa frame body 11, sofa frame body 11 includes base 111, backrest plate 112 and armrest 113, the lower end of backrest plate 112 is fixedly connected to the side of base 111 along the width direction of base 111.Armrest 113 is fixedly connected to the upper end of base 111 along, and the length direction of armrest 113 is parallel to the width direction of base 111.Armrest 113 is equipped with two, two armrests 113 are symmetrically distributed along the length direction of base 111.

[0040] Sofa body 1 further includes expansion plate 13 and sponge pad 16.The side of base 111 away from backrest plate 112 is equipped with accommodating groove 1111, and the upper end of expansion plate 13 is rotationally embedded in accommodating groove 1111, and the rotation axis of expansion plate 13 is parallel to the length direction of base 111.Sponge pad 16 is fixedly connected to the side surface of expansion plate 13 away from base 111.When expansion plate 13 is horizontal, the side surface of sponge pad 16 away from expansion plate 13 is flush with the upper surface of base 111.

[0041] Reference Figure 1 And Figure 2The sofa body 1 further comprises a backrest part 12. The backrest part 12 comprises a connecting plate 121 and a sliding seat one 122. The backrest plate 112 is provided with a first limiting groove 1121 near a side surface of the extension plate 13, the first limiting groove 1121 extends along the width direction of the backrest plate 112, and the first limiting groove 1121 is provided with two first limiting grooves 1121 which are symmetrically distributed along the length direction of the backrest plate 112. The number of the sliding seat one 122 is the same as that of the first limiting groove 1121 and one-to-one correspondence, the sliding seat one 122 is slidingly embedded in the first limiting groove 1121, and the sliding direction of the sliding seat one 122 is parallel to the length direction of the first limiting groove 1121. The sliding seat one 122 is hinged to the upper end of the connecting plate 121, and the hinge axis of the sliding seat one 122 and the connecting plate 121 is parallel to the length direction of the backrest plate 112.

[0042] With reference to Figure 2 and Figure 3 , the connecting plate 121 is fixedly connected with a connecting shaft 1211 near one end of the base 111, and the axis of the connecting shaft 1211 is parallel to the length direction of the base 111. The handrail 113 is provided with a communication groove 1131 near a side of the connecting plate 121, the communication groove 1131 extends along the width direction of the base 111, the connecting shaft 1211 is slidingly embedded in the communication groove 1131, and the sliding direction of the connecting shaft 1211 is parallel to the length direction of the communication groove 1131. The bottom of the communication groove 1131 is provided with a second limiting groove 1132, and the second limiting groove 1132 extends along the length direction of the communication groove 1131.

[0043] With reference to Figure 3 and Figure 4 , the backrest part 12 further comprises a sliding seat two 123, the number of the sliding seat two 123 is the same as that of the second limiting groove 1132 and one-to-one correspondence, the sliding seat two 123 is slidingly embedded in the second limiting groove 1132, and the sliding direction of the sliding seat two 123 is parallel to the length direction of the second limiting groove 1132. The rotating shaft 131 is hinged to the sliding seat two 123, and the hinge axis of the rotating shaft 131 and the sliding seat two 123 coincides with the axis of the connecting shaft 1211.

[0044] With reference to Figure 4 and Figure 5The electric lying sofa for a motor home further comprises a driving mechanism 2. The driving mechanism 2 comprises a first rack 23 and a first gear 22. The armrest 113 is provided with mounting grooves 1133, the number of the mounting grooves 1133 is the same as that of the second limiting grooves 1132 and one-to-one correspondence, the mounting grooves 1133 are in communication with the second limiting grooves 1132. The number of the first rack 23 and the first gear 22 is the same as that of the mounting grooves 1133 and one-to-one correspondence, the first rack 23 is fixedly connected to the lower end of the sliding seat two 123, the first rack 23 is slidingly embedded in the mounting groove 1133, and the sliding direction of the first rack 23 is parallel to the sliding direction of the sliding seat two 123. The first gear 22 is rotatably embedded in the mounting groove 1133, the rotation axis of the first gear 22 is parallel to the length direction of the base 111, and the first gear 22 is engaged with the first rack 23.

[0045] With reference to Figure 4 and Figure 6 , the driving mechanism 2 further comprises a driving motor 21. The driving motor 21 is connected to the base 111, and the driving motor 21 is used for driving the first gear 22 to rotate. In the embodiment, the driving motor 21 adopts a double-shaft motor, the base 111 is provided with a mounting cavity 1112, the mounting cavity 1112 is located between the two mounting grooves 1133, the shell of the driving motor 21 is fixedly connected to the lower cavity wall of the mounting cavity 1112, the output shafts of the driving motor 21 respectively extend into the two mounting grooves 1133, and the output shafts of the driving motor 21 are coaxially fixedly connected to the first gear 22.

[0046] With reference to Figure 4 and Figure 5 , the driving mechanism 2 further comprises a second gear 24, a second rack 25, a third reset member 26, a driving pulley 27, a driven pulley 28 and a belt body 29. The number of the second gear 24, the second rack 25, the third reset member 26, the driving pulley 27, the driven pulley 28 and the belt body 29 is the same as that of the mounting grooves 1133 and one-to-one correspondence. The second rack 25 is slidingly embedded in the mounting groove 1133, the sliding direction of the second rack 25 is parallel to the sliding direction of the first rack 23, the upper end of the first rack 23 is fixedly connected with an abutting block 231, and the abutting block 231 is used for abutting one end of the second rack 25 close to the sliding seat two 123. The second gear 24 is rotatably embedded in the mounting groove 1133, the rotation axis of the second gear 24 is parallel to the rotation axis of the first gear 22, the driving pulley 27 is coaxially fixedly connected to one side of the second gear 24 away from the connecting plate 121, the driven pulley 28 is fixedly connected to one side of the expansion plate 13 along the length direction of the expansion plate 13, and the axis of the driven pulley 28 coincides with the rotation axis of the expansion plate 13. The belt body 29 is sleeved on the outer periphery of the driving pulley 27 and the driven pulley 28.

[0047] With reference to Figure 5 and Figure 7, an electric reclining sofa for a motorhome also includes a control mechanism 3, which is used to control the operation of the drive motor 21. The control mechanism 3 includes a button 31 and a first reset member 32. An adjustment cavity 1134 is provided on the side surface of the armrest 113 away from the base 111, and the adjustment cavity 1134 extends along the length direction of the base 111. The button 31 is rotatably embedded in the adjustment cavity 1134, and the rotation axis of the button 31 is vertical. The length direction of the button 31 is parallel to the width direction of the base 111, and the distance from the rotation axis of the button 31 to the two ends of the button 31 along the length direction of the button 31 is equal. The first reset member 32 is connected between the armrest 113 and the button 31, and the first reset member 32 makes the side surface of the button 31 away from the wall of the adjustment cavity 1134 flush with the side surface of the armrest 113 away from the base 111. A rotation groove 1135 is defined in the wall of the adjustment cavity 1134 along the rotation axis of the button 31. A rotating rod 312 is fixedly connected to the side wall of the button 31 along one side of the rotation axis. The axis of the rotating rod 312 coincides with the rotation axis of the button 31. The rotating rod 312 rotates coaxially within the rotation groove 1135. The first return member 32 is sleeved around the outer circumference of the rotating rod 312. In this embodiment, the first return member 32 is a torsion spring. One end of the first return member 32 is connected to the button 31, and the other end is connected to the bottom of the rotation groove 1135.

[0048] The end of the button 31 away from the bottom of the adjustment cavity 1134 is provided with an indicator mark 311. There are two indicator marks 311, and the two indicator marks 311 are symmetrically distributed along the length of the button 31. The two indicator marks 311 are respectively "open" and "folded".

[0049] Reference Figure 8 The control mechanism 3 also includes a connecting base 35, a first magnetic block 36 and a second magnetic block 37. A sliding cavity 1136 is provided at the bottom of the adjustment cavity 1134. The sliding cavity 1136 extends along the length direction of the base 111. The number of sliding cavities 1136, the connecting base 35, the first magnetic block 36 and the second magnetic block 37 is the same as the number of indicator marks 311 and corresponds one to one. The connecting base 35 is slidably embedded in the sliding cavity 1136. The sliding direction of the connecting base 35 is parallel to the length direction of the sliding cavity 1136. The end of the connecting base 35 away from the bottom of the sliding cavity 1136 is used for the button 31 to abut. The first magnetic block 36 is fixedly connected to the side surface of the button 31 close to the connecting base 35, and the second magnetic block 37 is fixedly connected to the end of the connecting base 35 close to the button 31. The first magnetic block 36 and the second magnetic block 37 attract each other.

[0050] The control mechanism 3 further comprises moving contact pieces 33, fixed contact pieces 34 and a processor. The number of the moving contact pieces 33 and the fixed contact pieces 34 is the same as that of the connecting seats 35 and they are in one-to-one correspondence. The moving contact pieces 33 are fixedly connected to the ends of the connecting seats 35 away from the second magnetic blocks 37, and the fixed contact pieces 34 are fixedly connected to the bottoms of the sliding cavities 1136. The moving contact pieces 33 and the fixed contact pieces 34 are electrically connected to the processor. When the moving contact pieces 33 and the fixed contact pieces 34 are in contact, the processor sends a signal to the driving motor 21, and the driving motor 21 works.

[0051] The control mechanism 3 further comprises locking blocks 38 and second reset members 39. The number of the locking blocks 38 and the second reset members 39 is the same as that of the connecting seats 35 and they are in one-to-one correspondence. The sliding cavity 1136 is provided with a locking cavity 1137 on the cavity wall away from the other sliding seat 122 side. The locking cavity 1137 extends along the length direction of the button 31. The locking blocks 38 are slidingly embedded in the locking cavities 1137, and the sliding direction of the locking blocks 38 is parallel to the length direction of the locking cavities 1137. The side wall of the connecting seat 35 is provided with a locking groove 351 for embedding the end of the locking block 38 away from the locking cavity 1137. The second reset members 39 are connected between the locking blocks 38 and the handrails 113. The second reset members 39 make the end of the locking block 38 away from the bottom of the locking cavity 1137 have a tendency to be embedded in the sliding cavity 1136. In the embodiment, the second reset members 39 are springs. One end of the second reset members 39 is connected to the end of the locking block 38 close to the bottom of the locking cavity 1137, and the other end of the second reset members 39 is connected to the bottom of the locking cavity 1137.

[0052] The control mechanism 3 further comprises abutting rods 310. The number of the abutting rods 310 is the same as that of the locking blocks 38 and they are in one-to-one correspondence. The bottom of the locking cavity 1137 is provided with a connecting cavity 1138, and the abutting rods 310 are slidingly embedded in the connecting cavities 1138. The sliding direction of the abutting rods 310 is parallel to the sliding direction of the locking blocks 38. One end of the abutting rods 310 is fixedly connected to the end of the locking block 38 close to the bottom of the locking cavity 1137, and the other end of the abutting rods 310 extends into the second limiting groove 1132. The end of the abutting rods 310 extending into the second limiting groove 1132 is used for abutting the sliding seat two 123.

[0053] The implementation principle of the electric lying sofa for a house car according to an embodiment of the application is as follows: the indicating mark 311 of "opening" is pressed, the button 31 overcomes the elastic force of the first reset member 32 to extrude the connecting seat 35, the connecting ring is pushed to slide in the direction of approaching the fixed contact 34, the movable contact 33 and the fixed contact 34 are attached to each other, the circuit of the processor is connected, the locking block 38 is embedded into the locking groove 351 under the elastic force of the second reset member 39, the sliding seat and the armrest 113 are relatively fixed. The processor sends a signal to the driving motor 21, the driving motor 21 works, the first gear 22 is driven to rotate, the first rack 23 is driven to slide in the direction of moving away from the backrest plate 112, the sliding seat two 123 is driven to slide, the lower end of the connecting plate 121 is driven to slide, the sliding seat one 122 is driven to move downward, so that the connecting plate 121 is inclined. The abutting block 231 abuts against the second rack 25, the second rack 25 is driven to slide against the elastic force of the third reset member 26, the second gear 24 is driven to rotate, the driving pulley 27 is driven to rotate, the driven pulley 28 is driven to rotate through the belt 29, and the expansion plate 13 is driven to rotate. The expansion plate 13 is rotated to be horizontal, the sliding seat two 123 abuts against the abutting rod 310, the locking block 38 is pushed to be separated from the locking groove 351, the relative fixation of the sliding seat and the armrest 113 is released, the first magnetic block 36 and the second magnetic block 37 are attracted to each other, the connecting seat 35 slides in the direction of approaching the button 31, the movable contact 33 and the fixed contact 34 are separated from each other, the processor sends a signal to the driving motor 21, and the driving motor 21 stops working.

[0054] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. An electric reclining sofa for a recreational vehicle, characterized by: The sofa comprises a sofa frame (11), a backrest (12), an expansion plate (13) and a driving mechanism (2); the backrest (12) is connected to the sofa frame (11); the upper end of the expansion plate (13) is rotatably connected to a side of the sofa frame (11) away from the backrest (12); the rotation axis of the expansion plate (13) is horizontal; the driving mechanism (2) is connected to the sofa frame (11); and the driving mechanism (2) is used to drive the expansion plate (13) to rotate.

2. The electric reclining sofa for RV according to claim 1, characterized in that: The backrest portion (12) includes a connecting plate (121), a sliding seat 1 (122) and a sliding seat 2 (123); the upper ends of the sliding seat 1 (122) and the connecting plate (121) are hinged; the hinge axis of the sliding seat 1 (122) and the connecting plate (121) is parallel to the rotation axis of the expansion plate (13); the lower end of the sliding seat 2 (123) and the connecting plate (121) is hinged; the hinge axis of the sliding seat 2 (123) and the connecting plate (121) is parallel to the rotation axis of the sliding seat 1 (122) and the hinge axis of the connecting plate (121); the sliding seat one (122) is slidably connected to the sofa frame (11); the sliding direction of the sliding seat one (122) is vertical; the sliding seat two (123) is slidably connected to the sofa frame (11); the sliding direction of the sliding seat two (123) is horizontal; the sliding direction of the sliding seat two (123) is perpendicular to the rotation axis of the expansion plate (13); the driving mechanism (2) is used to drive the sliding seat two (123) to slide.

3. The electric reclining sofa for RV according to claim 2, characterized in that: It also includes a control mechanism (3); the control mechanism (3) is connected to the sofa frame (11); the driving mechanism (2) includes a driving motor (21), a first gear (22), a first rack (23), a second gear (24), a second rack (25), a third reset member (26), a driving pulley (27), a driven pulley (28) and a belt body (29); the first rack (23) is connected to the sliding seat 2 (123); the first gear (22) is rotatably connected to the sofa frame (11); the rotation axis of the first gear (22) is parallel to the rotation axis of the expansion plate (13); the first gear (22) is meshed with the second gear (24); the driving motor (21) is connected to the sofa frame (11); the driving motor (21) is used to drive the first gear (22) to rotate; the control mechanism (3) is used to control the operation of the driving motor (21); the second rack (25) is slidably connected to the sofa frame (11); The sliding direction of the second rack (25) is parallel to the sliding direction of the first rack (23); the end of the second rack (25) close to the backrest (12) is used for abutment with the first rack (23); the second gear (24) is rotatably connected to the sofa frame (11); the rotation axis of the second gear (24) is parallel to the rotation axis of the expansion plate (13); the second gear (24) is meshed with the second rack (25); the driving pulley (27) is coaxially connected The second gear (24) is connected to the driven pulley (28) and the expansion plate (13); the axis of the driven pulley (28) coincides with the rotation axis of the expansion plate (13); the belt body (29) is sleeved on the outer periphery of the driving pulley (27) and the driven pulley (28); the third reset member (26) is connected between the sofa frame (11) and the second rack (25); the third reset member (26) enables the expansion plate (13) to have a tendency to fit the sofa frame (11).

4. The electric reclining sofa for RV according to claim 3, characterized in that: There are two driven pulleys (28); the two driven pulleys (28) are symmetrically distributed along the rotation axis of the expansion plate (13); the number of the first gear (22), the first rack (23), the second gear (24), the second rack (25), the third reset member (26), the driving pulley (27) and the belt body (29) is the same as the number of the driven pulleys (28) and corresponds one to one.

5. The electric reclining sofa for RV according to claim 3, characterized in that: The control mechanism (3) comprises a button (31), a first reset member (32), a movable contact piece (33), a fixed contact piece (34) and a processor; the fixed contact piece (34) is connected to the sofa frame (11); the movable contact piece (33) is slidably connected to the sofa frame (11); the movable contact piece (33) and the fixed contact piece (34) are electrically connected to the processor; the processor is used to control the operation of the drive motor (21); the button (31) is rotationally connected to the sofa frame (11); the movable contact piece (33) is connected to the button (31); the first reset member (32) is connected between the button (31) and the sofa frame (11); the first reset member (32) makes the movable contact piece (33) have a tendency to move away from the fixed contact piece (34); when the movable contact piece (33) and the fixed contact piece (34) are in contact with each other, the drive motor (21) operates.

6. The electric reclining sofa for RV according to claim 5, characterized in that: An indicator mark (311) is provided on a side of the button (31) away from the contact switch; two indicator marks (311) are provided; and the number of the movable contact pieces (33) and the fixed contact pieces (34) is the same as the number of the indicator marks (311) and corresponds one to one.

7. The electric reclining sofa for RV according to claim 6, characterized in that: The control mechanism (3) further comprises a connecting seat (35), a first magnetic block (36), a second magnetic block (37), a locking block (38) and a second reset member (39); the number of the connecting seat (35), the first magnetic block (36), the second magnetic block (37), the locking block (38) and the second reset member (39) is the same as the number of the movable contact pieces (33) and corresponds to each other; the connecting seat (35) is connected to a side of the movable contact piece (33) close to the button (31); the first magnetic block (36) is connected to a side of the connecting seat (35) close to the button (31); the second magnetic block (37) is connected to the button (31) close to one side of the connecting seat (35); the second magnetic block (37) and the first magnetic block (36) attract each other; the locking block (38) is slidably connected to the sofa frame (11); the sliding direction of the locking block (38) is perpendicular to the sliding direction of the movable contact piece (33); a locking groove (351) is provided on the side wall of the connecting seat (35); the locking groove (351) is used for the locking block (38) to be embedded; the second reset member (39) is connected between the locking block (38) and the sofa frame (11); the second reset member (39) makes the locking block (38) have a tendency to be embedded in the locking groove (351).

8. The electric reclining sofa for recreational vehicles according to claim 7, characterized in that: The control mechanism (3) further comprises abutment rods (310); the number of the abutment rods (310) is the same as the number of the locking blocks (38) and corresponds one to one; one end of the abutment rod (310) is connected to the locking block (38); the other end of the locking block (38) is used for abutment by the second sliding seat (123).

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