Gravity center adjusting device of electric rocking sofa and electric rocking sofa

Abstract

The invention relates to the technical field of furniture manufacturing, and provides a gravity center adjusting device of an electric rocking sofa, which comprises an adjusting assembly and a gravity center monitoring mechanism, the adjusting frame is movably connected to the underframe and used for driving the adjusting frame to move relative to the underframe. A plurality of first connecting rods are arranged on the left and right sides of the adjusting frame; two ends of the first connecting rods are respectively hinged to the adjusting frame and the cradle assembly; the cradle assembly is used for being connected with a sofa seat; the rocking driving mechanism is used for driving the sofa seat to rock relative to the underframe; the gravity center monitoring mechanism comprises a positioning piece and a monitoring piece, the positioning piece is used for being connected with the sofa seat, when the positioning piece deviates from a specific position, the monitoring piece sends an adjusting signal to the control terminal, the control terminal starts the adjusting assembly after receiving the adjusting signal, and the effect of prolonging the service life of the electric rocking sofa is achieved. The invention further provides an electric rocking sofa which comprises a bottom frame, a sofa seat and the gravity center adjusting device, and the sofa seat is connected to the gravity center adjusting device.

Description

Technical Field

[0001] The present application relates to the field of furniture manufacturing technology, and in particular to a center of gravity adjustment device for an electric rocking sofa and the electric rocking sofa. Background Art

[0002] Electric rocking sofas usually refer to sofas that have electric adjustment functions and can rock. Electric rocking sofas are usually equipped with electric drive devices and have rocking functions. Users can adjust the sofa's tilt angle, height or rocking amplitude through buttons or remote controls. At present, electric rocking sofas have become a common piece of furniture in home leisure and commercial places.

[0003] The output end of the electric drive device is hinged to the sofa seat through a connecting rod, so that the sofa seat is driven to shake when it is started. When designing an electric shaking sofa, when the center of gravity of the sofa seat is at a specific position, the forces on the electric drive device and the connecting rod are relatively balanced. At this time, when the electric drive device drives the sofa seat to shake, the forces between the various structures are relatively balanced, which can reduce the damage to the electric drive device.

[0004] When a user sits on the sofa seat, the center of gravity of the sofa seat may be biased forward or backward relative to the above-mentioned specific position, depending on the user's posture habits. When the center of gravity is offset, the force balance of each structure of the rocking drive mechanism in the process of controlling the rocking of the sofa seat will be low, which will accelerate the damage speed of the rocking drive mechanism and shorten the service life of the electric rocking sofa. Summary of the invention

[0005] In order to extend the service life of an electric rocking sofa, the present application provides a center of gravity adjustment device for an electric rocking sofa and the electric rocking sofa.

[0006] On the one hand, the present application provides a gravity center adjustment device for an electric rocking sofa, which adopts the following technical solution: The electric rocking sofa comprises a base frame, an adjustment frame, a cradle assembly and a rocking drive mechanism; a plurality of first connecting rods are arranged on both sides of the adjustment frame, and the two ends of the first connecting rods are respectively hinged to the adjustment frame and the cradle assembly, and the plurality of first connecting rods are arranged at intervals in the horizontal direction; the axis of rotation of the first connecting rod relative to the cradle assembly is in the horizontal direction, and the axis of rotation of the first connecting rod relative to the cradle assembly is in the horizontal direction; the cradle assembly is used to be connected to the sofa seat; the rocking drive mechanism is connected to the adjustment frame, and the output end of the rocking drive mechanism is connected to the sofa seat, and the rocking drive mechanism is used to drive the sofa seat to rock relative to the base frame.

[0007] A gravity center adjustment device for an electric rocking sofa comprises an adjustment component and a gravity center monitoring mechanism; the adjustment frame is movably connected to the base frame, the adjustment component is used to drive the adjustment frame to move relative to the base frame, and the adjustment component is electrically connected to a control terminal; the gravity center monitoring mechanism comprises a positioning member and a monitoring member, the positioning member is used to be connected to the sofa seat, when the positioning member deviates from a specific position, the monitoring member sends an adjustment signal to the control terminal, and the control terminal starts the adjustment component after receiving the adjustment signal.

[0008] By adopting the above technical solution, the user sits on the sofa seat and starts the monitoring part first. At this time, if the positioning part deviates from the specific position, the monitoring part sends a signal to the control terminal. After receiving the signal, the control terminal controls the electric push rod to start. The electric push rod pushes the adjustment frame to move forward or backward relative to the base frame until the positioning part reaches a specific position, that is, the center of gravity of the sofa seat is adjusted to a position where the shaking drive mechanism can drive the sofa seat to shake with the least damage, and the control terminal controls the electric push rod to stop moving. After that, the user can choose to start the shaking program. After entering the shaking program, the shaking drive mechanism is less damaged, extending the service life of the electric shaking sofa; or choose not to start the shaking program, and the user's body is in a state of relatively balanced force and comfort.

[0009] In addition, by forming a hinge between the connecting rod and the cradle assembly and the adjustment frame, the cradle assembly and the sofa seat can be rocked relative to the adjustment frame and the base frame, and when the center of gravity of the cradle assembly and the sofa seat changes, they can also rotate under the action of their own gravity, so that the first connecting rod remains in a vertical state after the rotation, so that the first connecting rod is subjected to balanced force at the positions of the two hinge points, thereby reducing the possibility of deformation of the first connecting rod or damage at the hinge point position.

[0010] Optionally, the adjustment component includes a first hinge, a second hinge and an electric push rod; one end of the first hinge is hinged to the front end of the base frame, and the other end is hinged to the front end of the adjustment frame; one end of the second hinge is hinged to the rear end of the base frame, and the other end is hinged to the rear end of the adjustment frame; the electric push rod is hinged to the adjustment frame, the output end of the electric push rod is hinged to the base frame, and the electric push rod is electrically connected to the control terminal.

[0011] By adopting the above technical solution, when the center of gravity needs to be adjusted, the control terminal controls the electric push rod to start, and the electric push rod drives the adjustment frame to move obliquely forward or backward relative to the base frame, with a simple structure and stable connection.

[0012] Optionally, the first hinge is a plate-shaped structure, and two side walls of the first hinge that are away from each other are used to be hinged to the base frame and the adjustment frame respectively.

[0013] By adopting the above technical solution, since the user will experience a stage where the center of gravity is forward when sitting down or standing up, and the pressure on the sofa seat is greatest during the stage where the center of gravity is forward, the first hinge connected to the base frame and the front end of the adjustment member is set to a plate-like structure, so that the connection between the first hinge and the base frame and the adjustment frame is more stable, thereby reducing the speed at which the first hinge is damaged.

[0014] Optionally, a first mounting plate is provided on both sides of the adjustment frame, the first mounting plate is used for connection with the first connecting rod, each first mounting plate is correspondingly provided with two first connecting rods, and avoidance grooves are opened on the front and rear sides of the first mounting plate; the cradle assembly includes two cradle frames and two connecting rod frames, the two cradle frames are respectively connected to the two first mounting plates, the two ends of the connecting rod frame are respectively connected to the two cradle frames, the first mounting plate is located between the two connecting rod frames, and the groove wall of the avoidance groove is used for the connecting rod frame to abut.

[0015] By adopting the above technical solution, the avoidance groove is used to provide displacement space for the connecting rod frame, and the abutment of the groove wall of the avoidance groove is used as a limit to limit the maximum shaking of the sofa seat. In addition, the shaking of the sofa seat is a reciprocating motion, so the sofa seat will periodically change the direction of the speed during the shaking process. When changing the direction, the inertia of the sofa seat and the cradle assembly will cause the connection of the shaking drive mechanism to bear a large force. The abutment of the groove wall of the avoidance groove can share this part of the force to a certain extent, thereby further reducing the possibility of damage to the shaking drive mechanism and extending the service life of the electric shaking sofa.

[0016] Optionally, the rocking frame assembly also includes a second mounting plate and a mounting rod, two second mounting plates are provided, the two second mounting plates are respectively connected to the two rocking frames, the two second mounting plates are arranged opposite to each other, and the second mounting plate is used to connect to the sofa seat; the two ends of the mounting rod are respectively connected to the two second mounting plates and are located above the adjustment frame, and the output end of the rocking drive mechanism is connected to the middle position of the mounting rod.

[0017] By adopting the above technical solution, the rocking drive mechanism, the positioning member and the rocking frame assembly are integrated into one, so that the center of gravity adjustment device is suitable for connection with different types of sofa seats.

[0018] Optionally, the adjustment frame is provided with a protective shell, the protective shell has a accommodating cavity, and the shaking drive mechanism is located in the accommodating cavity; the monitoring component is detachably connected to the outer wall of the protective shell.

[0019] By adopting the above technical solution, the protective shell is used to provide certain protection for the shaking drive mechanism, thereby extending the service life of the shaking drive mechanism and further extending the service life of the electric shaking sofa.

[0020] Optionally, the shaking drive mechanism includes a mounting base, a first pulley, a second pulley, a transmission belt, a first motor, a second connecting rod, a lifting member and a third connecting rod; the mounting base includes a mounting plate and a mounting vertical plate, the mounting vertical plate is connected to the mounting plate, the first pulley, the second pulley and the first motor are all mounted on the mounting vertical plate, the first motor is used to drive the first pulley to rotate, and the inner wall of the transmission belt is engaged with the first pulley and the second pulley; one end of the second connecting rod is hinged at an eccentric position of the second pulley, and the other end is hinged to an end of the lifting member; one end of the third connecting rod is hinged to one end of the lifting member away from the second connecting rod end, and the other end is used to connect with the sofa seat; the lifting member is provided with a waist-shaped groove, and the installation vertical connection is provided with a cylindrical limiting member, the limiting member is located in the waist-shaped groove, and the outer wall of the limiting member abuts against the groove wall of the waist-shaped groove; the limiting member is provided with an adjusting screw barrel, and the adjusting screw barrel is extended along the length direction of the waist-shaped groove; the two ends of the lifting member are respectively fixed with a first connecting plate and a second connecting plate, the first connecting plate is rotatably connected with an adjusting screw, and one end of the adjusting screw away from the first connecting plate is rotatably connected to the second connecting plate; the first connecting plate is also equipped with a second motor, the second motor is used to drive the adjusting screw to rotate, and the adjusting screw is threadedly matched with the adjusting screw barrel.

[0021] By adopting the above technical solution, when the shaking drive mechanism is working, the first motor is started, and the first motor drives the second connecting rod to move through the first pulley, the second pulley and the transmission belt, and then drives the lifting member and the third connecting rod to move in turn, and then drives the sofa seat to shake through the third connecting rod to achieve the shaking of the sofa seat.

[0022] When the rocking angle of the sofa seat needs to be changed, the second motor is started, and the second motor drives the adjusting screw to rotate relative to the adjusting screw barrel, thereby driving the lifting member to move and changing the rotation point of the lifting member relative to the mounting vertical plate.

[0023] Optionally, the adjustment frame is provided with a buffer cylinder, in which a first piston and a second piston are provided. The surfaces of the first piston and the second piston facing away from each other are respectively connected with a first abutment rod and a second abutment rod, and the first abutment rod and the second abutment rod are respectively used for abutment of two connecting rod frames.

[0024] By adopting the above technical scheme, during the rocking process of the electric rocking sofa, before the sofa seat changes direction, taking a connecting rod frame located on the same side as the first abutting rod as an example, the connecting rod frame gradually abuts against the first abutting rod during the process of moving in the direction close to the first abutting rod, and then drags the first abutting rod to move. During the movement of the first abutting rod, the gas between the first piston and the second piston pushes the second piston to move the second abutting rod, thereby utilizing the friction between the first piston and the second piston and the inner wall of the buffer cylinder to form a buffer for the rocking frame assembly and the sofa seat, so that the rocking frame assembly and the rocking drive mechanism are subjected to a relatively mild force during the process of changing the movement direction, thereby reducing the speed at which the rocking frame assembly and the rocking drive mechanism are damaged, and further extending the service life of the electric rocking sofa.

[0025] Optionally, a vent hole is provided on the side wall of the buffer cylinder, and the vent hole is located between the first piston and the second piston; a vent pipe is provided on the outer wall of the buffer cylinder, and the inner cavity of the vent pipe is connected to the inner cavity of the buffer cylinder through the vent hole; the adjustment frame is provided with an electric cylinder, and the end of the output shaft of the electric cylinder is connected to a third piston, the third piston is located in the vent pipe, and the side wall of the third piston abuts against the inner wall of the vent pipe; the electric cylinder is electrically connected to the control terminal.

[0026] By adopting the above technical solution, when the control terminal controls the second motor to drive the lifting member to move, it synchronously controls the electric cylinder to drive the third piston to move towards or away from the buffer cylinder, thereby increasing or shortening the distance between the first piston and the second piston, and then controlling the distance between the first abutment rod, the second abutment rod and the connecting rod frame to adjust the buffering effect of the rocker assembly and improve the flexibility of use of the center of gravity adjustment device.

[0027] On the other hand, the present application provides an electric rocking sofa, which adopts the following technical solution: The sofa seat comprises a base frame, a sofa seat, a shaking drive mechanism and a center of gravity adjusting device. The sofa seat is movably connected to the base frame and can be shaken back and forth relative to the base frame. The base frame is provided with a first magnet, and the bottom surface of the sofa seat is provided with a second magnet. When the sofa seat is vacant, the second magnet is located directly above the first magnet, and the second magnet and the first magnet repel each other relatively. The shaking drive mechanism is installed on the base frame, and the shaking drive mechanism is used to drive the sofa seat to shake back and forth relative to the base frame. The center of gravity adjusting device is installed on the base frame, and the center of gravity adjusting device is used to adjust the center of gravity position of the sofa seat. The center of gravity adjusting device is a center of gravity adjusting device of an electric shaking sofa as described above.

[0028] By adopting the above technical solution, the mutual repulsion between the first magnet and the second magnet is utilized to support the sofa seat, thereby reducing the supporting burden of the shaking drive mechanism on the sofa seat, further reducing damage to the shaking drive mechanism, and extending the service life of the electric shaking sofa.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting the positioning member and the monitoring member, before starting the shaking program of the sofa seat, if the positioning member deviates from the specific position, the center of gravity of the sofa seat is adjusted through the control terminal so that the center of the sofa seat is located at a position where the shaking drive mechanism is less damaged, thereby extending the service life of the shaking drive mechanism and further extending the service life of the electric shaking sofa; 2. The cradle assembly includes two connecting rod frames, and avoidance grooves are provided on both the front and rear sides of the first mounting plate, so that when the sofa seat periodically shakes and changes the moving direction, the abutment of the avoidance grooves can share the force of the shaking drive mechanism to a certain extent, further reducing the possibility of damage to the shaking drive mechanism and extending the service life of the electric shaking sofa; 3. A buffer cylinder is arranged on the adjustment frame, and a first piston and a second piston are arranged in the buffer cylinder. The surfaces of the first piston and the second piston facing away from each other are respectively connected with a first abutment rod and a second abutment rod. The first abutment rod and the second abutment rod are respectively used for abutment of two connecting rod frames, thereby further forming a buffer when the sofa seat changes direction, thereby extending the service life of the electric rocking sofa. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of implementation 1 of this application.

[0031] Figure 2 It is a schematic diagram for showing the structure of the chassis in Example 1.

[0032] Figure 3 It is a schematic diagram for showing the structure after the adjustment frame is connected to the base frame in Example 1.

[0033] Figure 4 It is a schematic diagram of the structure after the connection of the cradle assembly, the cradle drive mechanism, the adjustment frame and the base frame in Example 1.

[0034] Figure 5 It is a schematic diagram for showing the structure of the center of gravity monitoring mechanism in Example 1.

[0035] Figure 6 It is a schematic diagram for illustrating the structure of the shaking drive mechanism in Example 1.

[0036] Figure 7 yes Figure 6 An enlarged schematic diagram in part A.

[0037] Figure 8 It is a schematic diagram for showing the installation position of the first motor in Example 1.

[0038] Fig. 9 It is a structural diagram of Example 2 of the present application.

[0039] Fig.10 It is a structural diagram of Example 3 of the present application.

[0040] Fig.11 yes Fig.10 An enlarged schematic diagram in part B.

[0041] Fig.12 It is a structural diagram of Example 4 of the present application.

[0042] Fig.13 It is a schematic diagram for showing the positional relationship between the first magnet and the second magnet in Example 4.

[0043] Explanation of the reference numerals: 1. chassis; 2. adjustment frame; 21. protective shell; 211. limiting protrusion; 212. plug-in slot; 22. accommodating chamber; 23. first mounting plate; 231. avoidance slot; 24. first connecting rod; 3. adjustment assembly; 31. first hinge; 32. second hinge; 33. electric push rod; 4. cradle assembly; 41. cradle; 42. connecting rod frame; 43. second mounting plate; 44. mounting rod; 6. center of gravity monitoring mechanism; 61. positioning member; 62. monitoring member; 621. plug-in sheet; 7. cradle drive mechanism; 71. mounting seat; 711. mounting plate; 712. mounting vertical plate; 713. limiting Part; 714, adjusting screw barrel; 72, first pulley; 73, second pulley; 74, transmission belt; 75, first motor; 76, second connecting rod; 77, lifting member; 771, waist-shaped groove; 772, first connecting plate; 773, second connecting plate; 774, adjusting screw; 775, second motor; 78, third connecting rod; 8, buffer cylinder; 81, first piston; 82, second piston; 83, first abutting rod; 84, second abutting rod; 85, vent; 86, vent pipe; 9, electric cylinder; 91, third piston; 10, center of gravity adjustment device; 11, sofa seat; 12, first magnet; 13, second magnet. DETAILED DESCRIPTION

[0044] When soft furniture such as electric sofas, electric rocking chairs, and electric beds are in use, the upper body and the rocking and swinging mechanism at the bottom move relative to each other. If the center of gravity of the upper body is offset, the aging and damage of the rocking and swinging mechanism will be accelerated over time. Therefore, the center of gravity of the upper body can be adjusted before use. Specifically, a center of gravity adjustment device can be used for soft furniture that needs to adjust the center of gravity. For better explanation, this application takes an electric rocking sofa as an example for detailed description.

[0045] Electric rocking sofas usually refer to sofas that can be rocked and have electric adjustment functions. This type of sofa is usually equipped with an electric mechanism, and users can easily adjust the sofa's tilt angle, height and rocking amplitude through buttons or remote controls to meet different sitting and lying needs. In addition to the basic sitting and lying functions, electric rocking sofas also have a rocking function. This dynamic design helps to relax the body and mind and relieve stress.

[0046] The electric rocking sofa comprises a base frame, a rocking drive mechanism and a sofa seat, wherein the sofa seat is movably connected to the base frame, and the output end of the rocking drive mechanism is hinged to the sofa seat, and the rocking drive mechanism is used to drive the sofa seat to rock back and forth relative to the base frame. When designing the electric rocking sofa, when the overall center of gravity of the user sitting behind the sofa seat is consistent with the center of gravity of the empty state, it is just in a position where the rocking drive mechanism is subjected to a relatively balanced force. At this time, the driving force of the rocking drive mechanism to drive the sofa body to rock back and forth relative to the base frame is relatively symmetrical and balanced, and the damage to the rocking drive mechanism is minimal during the rocking process.

[0047] However, in actual use, when the user sits on the sofa seat, the center of gravity of the sofa may be biased forward or backward due to different sitting positions and postures. At this time, when the shaking function of the electric shaking sofa is used, the shaking drive mechanism drives the sofa seat and the user to shake forward and backward at the same time, and the forces at the connection position between the shaking drive mechanism and the sofa seat and at the relevant structures inside the shaking drive mechanism will produce a certain imbalance and instability, which may easily cause damage to the shaking drive mechanism. In order to improve the above problems, the present application proposes a center of gravity adjustment device for an electric shaking sofa and an electric shaking sofa.

[0048] The following is combined with Figure 1-13 This application is described in further detail.

[0049] Example 1 This embodiment discloses a center of gravity adjustment device for an electric rocking sofa.

[0050] Reference Figure 1 The electric rocking sofa comprises a base frame 1, an adjustment frame 2, a rocking frame assembly 4 and a rocking drive mechanism 7. A gravity center adjustment device for an electric rocking sofa comprises an adjustment assembly 3 and a gravity center monitoring mechanism 6.

[0051] Reference Figure 1 and Figure 2 The adjusting frame 2 is movably connected to the base frame 1, the adjusting component 3 is used to drive the adjusting frame 2 to move relative to the base frame 1, and the adjusting component 3 is electrically connected to the control terminal, and the control terminal controls the start and stop of the adjusting component 3. In this embodiment, the control terminal includes a circuit board with a program written in it and a remote controller for sending signals to the circuit board.

[0052] Reference Figure 2 and Figure 3Specifically, in this embodiment, the adjustment component 3 includes a first hinge 31, a second hinge 32 and an electric push rod 33. One end of the first hinge 31 is hinged to the front end of the base frame 1, and the other end is hinged to the front end of the adjustment frame 2. One end of the second hinge 32 is hinged to the rear end of the base frame 1, and the other end is hinged to the rear end of the adjustment frame 2. The electric push rod 33 is hinged to the adjustment frame 2, the output end of the electric push rod 33 is hinged to the base frame 1, and the electric push rod 33 is electrically connected to the control terminal. When adjusting the center of gravity, the control terminal controls the electric push rod 33 to start, and the electric push rod 33 drives the adjustment frame 2 to move relative to the base frame 1.

[0053] In this embodiment, two first hinges 31 are provided, and the first hinges 31 are plate-shaped structures. The two side walls of the first hinges 31 that are far from each other are respectively used to be hinged with the base frame 1 and the adjustment frame 2. Two second hinges 32 are provided, and the two second hinges 32 are both strip-shaped structures. The two second hinges 32 are respectively connected to the left and right sides of the adjustment frame 2. One end of the electric push rod 33 is hinged to the rear end of the base frame 1, and the other end is hinged to the rear end of the adjustment frame 2. The electric push rod 33 is located between the two second hinges 32. Since the user will experience a stage where the center of gravity is forward during the process of sitting down and getting up, and the pressure on the sofa seat is the greatest during the stage where the center of gravity is forward, the first hinge 31 connected to the base frame 1 and the front end of the adjustment member is set to a plate-shaped structure, so that the connection between the first hinge 31 and the base frame 1 and the adjustment frame 2 is more stable, so as to slow down the speed of damage to the first hinge 31.

[0054] In other embodiments, the first hinge 31 and the second hinge 32 may also be of other numbers and shapes.

[0055] Back to Figure 1 The adjustment frame 2 is also fixedly connected with a protective shell 21 , which has a receiving cavity 22 , and the shaking drive mechanism 7 is located in the receiving cavity 22 , so that the protective shell 21 can form a certain protection for the shaking drive mechanism 7 .

[0056] Reference Figure 3 and Figure 4 The cradle assembly 4 includes two cradle frames 41 and two connecting rod frames 42. The two cradle frames 41 are arranged opposite to each other and are respectively located on the left and right sides of the adjustment frame 2. The two connecting rod frames 42 are used to connect the two cradle frames 41. The two connecting rod frames 42 are respectively located at both ends of the cradle frames 41.

[0057] The connection structure between the adjustment frame 2 and the cradle assembly 4 is as follows: the left and right sides of the adjustment frame 2 are fixedly connected with first mounting plates 23, the two first mounting plates 23 are arranged opposite to each other, and the surfaces of the two first mounting plates 23 that are away from each other are provided with two first connecting rods 24. One end of the first connecting rod 24 is hinged to the first mounting plate 23, and the other end is hinged to the cradle 41. The axis of rotation of the first connecting rod 24 relative to the first mounting plate 23 is in the horizontal direction, and the axis of rotation of the first connecting rod 24 relative to the cradle 41 is in the horizontal direction. Under normal conditions, the first connecting rod 24 is in a vertical state under the action of its own gravity.

[0058] Wherein, the front and rear sides of the first mounting plate 23 are provided with avoidance grooves 231, and the groove walls of the avoidance grooves 231 are used for abutment of the connecting rod frame 42. Thus, the avoidance grooves 231 are used to provide displacement space for the connecting rod frame 42, and the abutment of the groove walls of the avoidance grooves 231 is used as a limit to limit the maximum shaking of the sofa seat. In addition, the shaking of the sofa seat is a cyclic reciprocating motion, so the sofa seat will periodically change the direction of the speed during the shaking process. When changing the direction, the inertia of the sofa seat and the cradle assembly 4 will cause the connection of the shaking drive mechanism 7 to bear a large force. The abutment of the groove walls of the avoidance grooves 231 can share this part of the force to a certain extent, thereby further reducing the possibility of damage to the shaking drive mechanism 7 and extending the service life of the electric shaking sofa.

[0059] Reference Figure 5 The center-of-gravity monitoring mechanism 6 includes a positioning member 61 and a monitoring member 62. The positioning member 61 is connected to the sofa seat, and the monitoring member 62 is electrically connected to the control terminal. When the positioning member 61 deviates from a specific position (when the positioning member 61 is located at a specific position, it means that the center of gravity of the sofa seat is at a position where the shaking drive mechanism 7 is least damaged), the monitoring member 62 sends a signal to the control terminal, and the control terminal starts the electric push rod 33 after receiving the signal.

[0060] In this embodiment, the positioning member 61 is a light shielding sheet, and the monitoring member 62 is two sets of gratings arranged opposite to each other, and there is a through slot between the two sets of gratings for the positioning member 61 to pass through. In other embodiments, the monitoring member 62 can also be a proximity switch or a travel switch or other components that can determine whether the positioning member 61 is located at a specific position.

[0061] The monitoring component 62 is detachably connected to the protective shell 21 .

[0062] The monitoring component 62 is connected to a plug-in piece 621, and the protective shell 21 is integrally formed with two relatively arranged limiting protrusions 211, and a plug-in slot 212 is defined between the limiting protrusions 211. The plug-in slot 212 is used for the plug-in piece 621 to be plugged in, so as to realize the detachable connection between the monitoring component 62 and the protective shell 21 through the plug-in cooperation between the plug-in piece 621 and the plug-in slot 212.

[0063] When the user sits on the sofa seat and starts the shaking program, the monitoring component 62 starts. At this time, if the positioning component 61 deviates from the specific position, the monitoring component 62 sends a signal to the control terminal, and the control terminal controls the electric push rod 33 to start after receiving the signal. The electric push rod 33 pushes the adjustment frame 2 to move forward or backward relative to the base frame 1 until the positioning component 61 reaches a specific position, that is, the center of gravity of the sofa seat is adjusted to a position where the shaking drive mechanism 7 drives the sofa seat to shake with the least damage. The control terminal controls the electric push rod 33 to stop moving, and then the control terminal cuts off the above program and enters the shaking program.

[0064] It is understandable that in other embodiments, a pressure sensor electrically connected to the control terminal may be provided on the sofa body, and when the pressure on the sofa body changes, the control terminal enters the center of gravity adjustment program.

[0065] Reference Figure 6 , Figure 7 and Figure 8 The rocking drive mechanism 7 includes a mounting seat 71, a first pulley 72, a second pulley 73, a transmission belt 74, a first motor 75, a second connecting rod 76, a lifting member 77 and a third connecting rod 78. The mounting seat 71 includes a mounting plate 711 and a mounting vertical plate 712, the mounting vertical plate 712 is connected to the mounting plate 711, the first pulley 72, the second pulley 73 and the first motor 75 are all installed on the mounting vertical plate 712, the first motor 75 is used to drive the first pulley 72 to rotate, and the inner wall of the transmission belt 74 is engaged with the first pulley 72 and the second pulley 73, thereby driving the second pulley 73 to rotate. One end of the second connecting rod 76 is hinged at the eccentric position of the second pulley 73, and the other end is hinged to the end of the lifting member 77. One end of the third connecting rod 78 is hinged to one end of the lifting member 77 away from the second connecting rod 76, and the other end is used to connect with the sofa seat.

[0066] The lifting member 77 is provided with a waist-shaped groove 771, and the installation vertical plate 712 is connected with a cylindrical stopper 713, which is located in the waist-shaped groove 771, and the side wall of the stopper 713 abuts against the groove wall of the waist-shaped groove 771, so that the stopper 713 can move relative to the lifting member 77 along the length direction of the waist-shaped groove 771. The circumferential side of the stopper 713 is fixedly connected with an adjusting screw barrel 714, and the adjusting screw barrel 714 is extended along the length direction of the waist-shaped groove 771. The two ends of the lifting member 77 are respectively fixedly connected with a first connecting plate 772 and a second connecting plate 773, and the first connecting plate 772 is rotatably connected with an adjusting screw rod 774, and one end of the adjusting screw rod 774 away from the first connecting plate 772 is rotatably connected to the second connecting plate 773. The first connecting plate 772 is also installed with a second motor 775, and the second motor 775 is used to drive the adjusting screw rod 774 to rotate, and the adjusting screw rod 774 is threadedly matched with the adjusting screw rod 714.

[0067] Wherein, the first motor 75 and the second motor 775 are both electrically connected to the control terminal.

[0068] It is understandable that in other embodiments, especially when the center of gravity adjustment device is applied to a multi-person sofa, an additional adjustment frame, a group of adjustment components, a group of rocking frame components and a center of gravity monitoring mechanism can be added to adjust the center of gravity of the sofa body in the left and right directions.

[0069] The implementation principle of Example 1 is as follows: when the user sits on the sofa seat and starts the shaking program, the monitoring component 62 starts accordingly. At this time, if the positioning component 61 deviates from the specific position, the monitoring component 62 sends a signal to the control terminal, and the control terminal controls the electric push rod 33 to start after receiving the signal. The electric push rod 33 pushes the adjustment frame 2 to move forward or backward relative to the base frame 1 until the positioning component 61 reaches a specific position, that is, the center of gravity of the sofa seat is adjusted to a position where the shaking drive mechanism 7 drives the sofa seat to shake with the least damage, and the control terminal controls the electric push rod 33 to stop moving, and then the control terminal cuts off the above program and enters the shaking program.

[0070] After entering the shaking program, the first motor 75 is started, and the first motor 75 drives the second connecting rod 76 to rotate back and forth through the first pulley 72, the transmission belt 74 and the second pulley 73, thereby driving the third connecting rod 78 to rotate back and forth through the lifting member 77, thereby driving the cradle assembly 4 and the sofa seat to shake. When it is necessary to adjust the shaking frequency, the second motor 775 is started, and the lifting member 77 is driven by the second motor 775 to move relative to the limit member 713.

[0071] Example 2 Reference Fig. 9 The difference between this embodiment and embodiment 1 is that the cradle assembly 4 also includes a second mounting plate 43 and a mounting rod 44, two second mounting plates 43 are provided, the two second mounting plates 43 are respectively connected to the two cradles 41, the two second mounting plates 43 are arranged opposite to each other, and the two second mounting plates 43 are respectively used to connect with the two sides of the sofa seat.

[0072] Both ends of the mounting rod 44 are respectively connected to the two second mounting plates 43 and are located above the adjustment frame 2. In this embodiment, one end of the third connecting rod 78 away from the lifting member 77 is hinged to the mounting rod 44, and the positioning member 61 is installed on the mounting rod 44, so that the third connecting rod 78 and the positioning member 61 are integrated into one body, so as to be suitable for connection with different types of sofa seats.

[0073] Example 3 Reference Fig.10 and Fig.11The difference between this embodiment and the first embodiment is that the first mounting plate 23 is provided with a buffer cylinder 8, and the buffer cylinder 8 is provided with a first piston 81 and a second piston 82. The surfaces of the first piston 81 and the second piston 82 facing away from each other are respectively connected with a first abutting rod 83 and a second abutting rod 84, and the first abutting rod 83 and the second abutting rod 84 are respectively used for abutment of two connecting rod frames 42.

[0074] The side wall of the buffer cylinder 8 is provided with a vent hole 85, and the vent hole 85 is located between the first piston 81 and the second piston 82. The outer wall of the buffer cylinder 8 is fixedly connected with a vent pipe 86, and the inner cavity of the vent pipe 86 is connected to the inner cavity of the buffer cylinder 8 through the vent hole 85. The adjustment frame 2 is provided with an electric cylinder 9, and the end of the output shaft of the electric cylinder 9 is connected to the third piston 91, and the third piston 91 is located in the vent pipe 86, and the side wall of the third piston 91 abuts against the inner wall of the vent pipe 86. The electric cylinder 9 is electrically connected to the control terminal.

[0075] The implementation principle of Example 3 is as follows: during the rocking process of the electric rocking sofa, before the sofa seat changes direction, taking a connecting rod frame 42 located on the same side as the first abutting rod 83 as an example, the connecting rod frame 42 gradually abuts against the first abutting rod 83 during the process of moving in the direction close to the first abutting rod 83, and then drags the first abutting rod 83 to move. During the movement of the first abutting rod 83, the gas between the first piston 81 and the second piston 82 pushes the second piston 82 and the second abutting rod 84 to move, thereby utilizing the friction between the first piston 81 and the second piston 82 and the inner wall of the buffer cylinder 8 to form a buffer for the cradle assembly 4 and the sofa seat, so that the cradle assembly 4 and the rocking drive mechanism 7 are subjected to a relatively mild force during the process of changing the direction of movement, and also play a certain role in assisting the deceleration of the cradle assembly 4, so as to reduce the damage to the cradle assembly 4 and the rocking drive mechanism 7, and further extend the service life of the electric rocking sofa.

[0076] In addition, when the control terminal controls the second motor 775 to drive the lifting member 77 to move, it synchronously controls the electric cylinder 9 to drive the third piston 91 to move toward or away from the buffer cylinder 8, thereby increasing or shortening the distance between the first piston 81 and the second piston 82, and then controlling the distance between the first abutment rod 83, the second abutment rod 84 and the connecting rod frame 42, so as to adjust the buffering effect on the rocker assembly 4 and improve the flexibility of use of the center of gravity adjustment device.

[0077] Example 4 This embodiment provides an electric rocking sofa.

[0078] Reference Fig.12An electric rocking sofa comprises a base frame 1, a sofa seat 11, a rocking driving mechanism 7 and a gravity center adjusting device 10. The sofa seat 11 is movably connected to the base frame 1 and can rock back and forth relative to the base frame 1. The base frame 1 is provided with a first magnet 12, and the ground of the sofa seat 11 is provided with a second magnet 13. When the sofa seat 11 is vacant, the second magnet 13 is located directly above the first magnet 12, and the second magnet 13 and the first magnet 12 are relatively repelled.

[0079] The rocking driving mechanism 7 is installed on the base frame 1 , and the rocking driving mechanism 7 is used for driving the sofa seat 11 to rock relative to the base frame 1 .

[0080] The center of gravity adjusting device 10 is installed on the base frame 1, and is used to adjust the center of gravity position of the sofa seat 11. The center of gravity adjusting device 10 is a center of gravity adjusting device 10 of an electric rocking sofa in Example 1, Example 2 or Example 3.

[0081] The mutual repulsion between the first magnet 12 and the second magnet 13 is utilized to support the sofa seat 11, thereby reducing the supporting burden of the shaking drive mechanism 7 on the sofa seat 11, further reducing damage to the shaking drive mechanism 7, and extending the service life of the electric shaking sofa.

[0082] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gravity center adjustment device for an electric rocking sofa, the electric rocking sofa comprising a base frame (1), an adjustment frame (2), a cradle assembly (4) and a rocking drive mechanism (7); a plurality of first connecting rods (24) are arranged on both sides of the adjustment frame (2), the two ends of the first connecting rod (24) are respectively hinged to the adjustment frame (2) and the cradle assembly (4), and the plurality of first connecting rods (24) are arranged at intervals in the horizontal direction; the axis of rotation of the first connecting rod (24) relative to the cradle assembly (4) is in the horizontal direction, and the axis of rotation of the first connecting rod (24) relative to the cradle assembly (4) is in the horizontal direction; the cradle assembly (4) is used to be connected to a sofa seat; the rocking drive mechanism (7) is connected to the adjustment frame (2), the output end of the rocking drive mechanism (7) is connected to the sofa seat, and the rocking drive mechanism (7) is used to drive the sofa seat to rock relative to the base frame (1); characterized in that: The invention comprises an adjustment component (3) and a center of gravity monitoring mechanism (6); the adjustment frame (2) is movably connected to the base frame (1); the adjustment component (3) is used to drive the adjustment frame (2) to move relative to the base frame (1); and the adjustment component (3) is electrically connected to a control terminal; the center of gravity monitoring mechanism (6) comprises a positioning member (61) and a monitoring member (62); the positioning member (61) is used to be connected to the sofa seat; when the positioning member (61) deviates from a specific position, the monitoring member (62) sends an adjustment signal to the control terminal; and the control terminal starts the adjustment component (3) after receiving the adjustment signal.

2. The center of gravity adjustment device of an electric rocking sofa according to claim 1, characterized in that: The adjustment component (3) comprises a first hinge (31), a second hinge (32) and an electric push rod (33); one end of the first hinge (31) is hinged to the front end of the base frame (1), and the other end is hinged to the front end of the adjustment frame (2); one end of the second hinge (32) is hinged to the rear end of the base frame (1), and the other end is hinged to the rear end of the adjustment frame (2); the electric push rod (33) is hinged to the adjustment frame (2), the output end of the electric push rod (33) is hinged to the base frame (1), and the electric push rod (33) is electrically connected to the control terminal.

3. The center of gravity adjustment device of an electric rocking sofa according to claim 2, characterized in that: The first hinged member (31) is a plate-shaped structure, and two side walls of the first hinged member (31) that are away from each other are used to be hinged to the base frame (1) and the adjustment frame (2) respectively.

4. The center of gravity adjustment device for an electric rocking sofa according to claim 1, characterized in that: A first mounting plate (23) is provided on both sides of the adjustment frame (2), the first mounting plate (23) being used for connection with the first connecting rod (24), each first mounting plate (23) being correspondingly provided with two first connecting rods (24), and avoidance grooves (231) are provided on both front and rear sides of the first mounting plate (23); the cradle assembly (4) comprises two cradle frames (41) and two connecting rod frames (42), the two cradle frames (41) being respectively connected to the two first mounting plates (23), the two ends of the connecting rod frames (42) being respectively connected to the two cradle frames (41), the first mounting plate (23) being located between the two connecting rod frames (42), and the groove wall of the avoidance groove (231) being used for abutment of the connecting rod frames (42).

5. The center of gravity adjustment device for an electric rocking sofa according to claim 4, characterized in that: The cradle assembly (4) further comprises a second mounting plate (43) and a mounting rod (44); two second mounting plates (43) are provided, the two second mounting plates (43) are respectively connected to the two cradles (41); the two second mounting plates (43) are arranged opposite to each other, and the second mounting plates (43) are used to be connected to the sofa seat; the two ends of the mounting rod (44) are respectively connected to the two second mounting plates (43) and are located above the adjustment frame (2); the output end of the cradle drive mechanism (7) is connected to the middle position of the mounting rod (44).

6. The center of gravity adjustment device for an electric rocking sofa according to claim 1, characterized in that: The adjustment frame (2) is provided with a protective shell (21), the protective shell (21) having a receiving cavity (22), the shaking drive mechanism (7) being located in the receiving cavity (22); the monitoring component (62) is detachably connected to the outer wall of the protective shell (21).

7. The center of gravity adjustment device for an electric rocking sofa according to claim 1, characterized in that: The shaking drive mechanism (7) comprises a mounting seat (71), a first belt pulley (72), a second belt pulley (73), a transmission belt (74), a first motor (75), a second connecting rod (76), a lifting member (77) and a third connecting rod (78); the mounting seat (71) comprises a mounting plate (711) and a mounting vertical plate (712), the mounting vertical plate (712) being connected to the mounting plate (711), the first belt pulley (72), the second belt pulley (73) and the first motor (75) being mounted The first motor (75) is used to drive the first pulley (72) to rotate on the mounting vertical plate (712); the inner wall of the transmission belt (74) is engaged with the first pulley (72) and the second pulley (73); one end of the second connecting rod (76) is hinged to the eccentric position of the second pulley (73), and the other end is hinged to the end of the lifting member (77); one end of the third connecting rod (78) is hinged to the end of the lifting member (77) away from the second connecting rod (76), and the other end is hinged to the end of the lifting member (77). The end is used to connect with the sofa seat; the lifting member (77) is provided with a waist-shaped groove (771), the installation vertical connection is provided with a cylindrical limiting member (713), the limiting member (713) is located in the waist-shaped groove (771), and the outer wall of the limiting member (713) abuts against the groove wall of the waist-shaped groove (771); the limiting member (713) is provided with an adjusting screw barrel (714), and the adjusting screw barrel (714) is extended along the length direction of the waist-shaped groove (771); the two ends of the lifting member (77) are respectively fixedly connected with the first A connecting plate (772) and a second connecting plate (773), wherein the first connecting plate (772) is rotatably connected to an adjusting screw (774), and one end of the adjusting screw (774) away from the first connecting plate (772) is rotatably connected to the second connecting plate (773); the first connecting plate (772) is also equipped with a second motor (775), and the second motor (775) is used to drive the adjusting screw (774) to rotate, and the adjusting screw (774) is threadably matched with the adjusting screw barrel (714).

8. The center of gravity adjustment device for an electric rocking sofa according to claim 4, characterized in that: The adjustment frame (2) is provided with a buffer cylinder (8), and a first piston (81) and a second piston (82) are provided in the buffer cylinder (8); surfaces of the first piston (81) and the second piston (82) facing away from each other are respectively connected to a first abutment rod (83) and a second abutment rod (84), and the first abutment rod (83) and the second abutment rod (84) are respectively used for abutment of two connecting rod frames (42).

9. The center of gravity adjustment device of an electric rocking sofa according to claim 8, characterized in that: The side wall of the buffer cylinder (8) is provided with a vent hole (85), and the vent hole (85) is located between the first piston (81) and the second piston (82); the outer wall of the buffer cylinder (8) is provided with a vent pipe (86), and the inner cavity of the vent pipe (86) is connected to the inner cavity of the buffer cylinder (8) through the vent hole (85); the adjustment frame (2) is provided with an electric cylinder (9), and the end of the output shaft of the electric cylinder (9) is connected to a third piston (91), and the third piston (91) is located in the vent pipe (86), and the side wall of the third piston (91) abuts against the inner wall of the vent pipe (86); the monitoring component (62) is an infrared rangefinder, and the electric cylinder (9) is electrically connected to the control terminal.

10. An electric rocking sofa, characterized in that: The sofa seat (11) comprises a base frame (1), a sofa seat (11), a shaking drive mechanism (7) and a center of gravity adjusting device (10), wherein the sofa seat (11) is movably connected to the base frame (1) and can be shaken forward and backward relative to the base frame (1), the base frame (1) is provided with a first magnet (12), and the bottom surface of the sofa seat (11) is provided with a second magnet (13); when the sofa seat (11) is vacant, the second magnet (13) is located directly above the first magnet (12), and the second magnet (13) and the first magnet (12) are relatively repelled; the shaking drive mechanism (7) is mounted on the base frame (1), and the shaking drive mechanism (7) is used to drive the sofa seat (11) to shake relative to the base frame (1); the center of gravity adjusting device (10) is mounted on the base frame (1), and the center of gravity adjusting device (10) is used to adjust the center of gravity position of the sofa seat (11), and the center of gravity adjusting device (10) is a center of gravity adjusting device (10) for an electric shaking sofa according to any one of claims 1 to 9.

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