Mute rocking driving structure, rocking bed and rocking chair

Abstract

The utility model discloses a mute swing driving structure, a swing bed and a swing chair, the mute swing driving structure comprises a swing frame group, a driving mechanism and an electrical control assembly, the swing frame group comprises a fixed frame body and a swing frame body rotationally connected to the fixed frame body; the driving mechanism comprises a stator part and a rotor part, one of the stator part and the rotor part comprises a first iron core and a three-phase winding, and the other one of the stator part and the rotor part comprises a second iron core and a plurality of permanent magnets; the electrical control assembly comprises a controller driving the three-phase winding and a position sensor used for detecting the swing position of the swing frame body, and the controller controls the three-phase winding according to position information fed back by the position sensor. A reduction gearbox and a transmission shaft of the motor are omitted, so that the whole swing driving structure can run in a mute mode, the driving force of the electromagnetic coil of the three-phase winding can be increased or reduced at any time of swing, and swing curve speed change and swing amplitude change are easier to achieve.

Description

Technical Field

[0001] This utility model relates to the field of rocking structures, and in particular to a silent rocking drive structure, a rocking bed, and a rocking chair. Background Technology

[0002] In furniture design, a rocking structure usually refers to furniture with a rocking function, such as rocking chairs, cradles, rocking beds, and rocking sofas. The benefits of rocking include: 1. Promoting blood circulation, helping to relax muscles, and reducing fatigue; 2. Stimulating the vestibular system (located in the inner ear, responsible for balance), which helps to enhance balance ability; 3. Relaxing muscles, reducing muscle tension and pain, especially suitable for relieving tension in the neck, shoulders, and back.

[0003] In existing technologies, the swaying motion of a rocking structure is driven entirely by a motor. The rotation of the motor causes the structure to swing left and right. Due to the influence of the motor, users will feel that the swaying motion is too stiff and unnatural, which affects the user experience. In addition, the motor generates noise during operation, which can interfere with sleep and may lead to anxiety, depression and lack of concentration, thus affecting the user experience. Therefore, how to reduce the noise generated during use is a key research direction in the industry for furniture.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a silent rocking drive structure, a rocking bed, and a rocking chair. The drive mechanism includes a stator and a mover. One of the stator and mover includes a first iron core and a three-phase winding, while the other includes a second iron core and multiple permanent magnets. Driven by the cooperation of the stator and mover, the rocking frame swings relative to the fixed frame, eliminating the need for a motor's gearbox and drive shaft. This allows the entire rocking drive structure to operate silently. Furthermore, the controller controls the three-phase winding based on position information from the position sensor. At any point during the rocking motion, the electromagnetic coils of the three-phase winding can increase or decrease the driving force, making it easier to achieve variable speed and amplitude swing curves.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A silent rocking drive structure includes:

[0008] A swing frame assembly, the swing frame assembly comprising a fixed frame and a swing frame rotatably connected to the fixed frame;

[0009] A driving mechanism is provided for driving the swing frame to swing relative to the fixed frame. The driving mechanism includes a stator part disposed on the fixed frame and a mover part disposed on the swing frame. One of the stator part and the mover part includes a first iron core and three-phase windings. The first iron core includes a mounting part and six winding parts connected to the mounting part. The bottom of the mounting part has a first arc surface. The six winding parts are arranged at intervals along the first arc surface. The three-phase windings are respectively wound on the six winding parts. The other part includes a second core and a plurality of permanent magnets. The second core has a second arc surface that matches the first arc surface. The plurality of permanent magnets are arranged at intervals along the second arc surface on the second core, and the magnetic poles are arranged alternately.

[0010] An electrical control assembly includes a controller for driving three-phase windings and a position sensor for detecting the swing position of the swing frame. The controller controls the three-phase windings based on the position information fed back by the position sensor.

[0011] As a preferred embodiment, the swing frame has a fixed state, a free swing state, and a commanded swing state; in the fixed state, the controller controls the three-phase windings to be short-circuited; in the free swing state, the controller controls the three-phase windings to be open-circuited; in the commanded swing state, the controller can receive current information fed back from the three-phase windings, and thus control the current passing through the three-phase windings.

[0012] As a preferred embodiment, the three-phase windings are arranged in a Y-shape on six winding sections.

[0013] As a preferred embodiment, the position sensor is a magnetic encoder, and correspondingly, a magnet is provided at the rotational connection between the fixed frame and the swing frame, and the position sensor is set with respect to the magnet.

[0014] As a preferred embodiment, the six winding sections and multiple permanent magnets are arranged at equal intervals, with the spacing between adjacent winding sections being smaller than the spacing between adjacent permanent magnets.

[0015] As a preferred embodiment, the bottom area of ​​the winding portion is smaller than the top area of ​​the permanent magnet.

[0016] As a preferred embodiment, each of the four corners of the swing frame is rotatably connected to a swing rod, and the end of the swing rod away from the swing frame is rotatably connected to a fixed frame. The second iron core of the moving part is fixed to one of its swing rods. Correspondingly, the fixed frame is provided with a first mounting position for the stator part to be installed in the moving part, and the first iron core of the stator part is fixed in the first mounting position.

[0017] As a preferred embodiment, each of the four corners of the swing frame is rotatably connected to a swing rod. The end of the swing rod furthest from the swing frame is rotatably connected to a fixed frame. Among the four swing rods, two oppositely arranged swing rods are connected by a connecting shaft. A second mounting position for mounting the moving part is fixed on the connecting shaft. The first iron core of the moving part is fixed in the second mounting position. Correspondingly, the second iron core of the stator part is fixed on the fixed frame and is arranged corresponding to the moving part.

[0018] A rocking bed includes a mattress mounting frame and a silent rocking drive structure, wherein the mattress mounting frame is fixed to the rocking frame.

[0019] A rocking chair includes a chair body and a silent rocking drive structure, wherein the chair body is fixed to a rocking frame.

[0020] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0021] The main features are a drive mechanism consisting of a stator and a mover. One of the stator and mover components includes a first iron core and three-phase windings, while the other includes a second iron core and multiple permanent magnets. The drive mechanism works in conjunction with the stator and mover components to make the swing frame swing relative to the fixed frame. This eliminates the need for a motor gearbox and drive shaft, allowing the entire swing drive structure to operate quietly. Furthermore, the controller uses position information from the position sensor to control the three-phase windings. At any point during the swing, the electromagnetic coils of the three-phase windings can increase or decrease the driving force, making it easier to achieve variable speed and swing amplitude on the swing curve.

[0022] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a perspective view of a preferred embodiment of the present invention;

[0024] Figure 2 This is a partial assembly diagram of a preferred embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the installation of the drive mechanism according to a preferred embodiment of the present invention;

[0026] Figure 4 This is a wiring diagram of the three-phase winding of a preferred embodiment of the present invention;

[0027] Figure 5 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention applied to a rocking bed (leftmost rocking position);

[0028] Figure 6 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention applied to a rocking bed (middle rocking position);

[0029] Figure 7 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention applied to a rocking bed (rightmost rocking position);

[0030] Figure 8 This is a three-dimensional schematic diagram of a preferred embodiment of the present invention applied to a rocking chair;

[0031] Figure 9 This is a three-dimensional schematic diagram of another perspective of the preferred embodiment of this utility model applied to a rocking chair.

[0032] Explanation of reference numerals in the attached diagram:

[0033] 10. Swing frame assembly 11. Fixed frame

[0034] 111. Top frame; 112. Supporting feet

[0035] 113. Base frame; 114. Second support frame

[0036] 115. Side panel 12. Swing frame

[0037] 121. Base frame; 122. First support frame

[0038] 123. Mounting strip 101. First mounting position

[0039] 20. Drive mechanism 21. Stator section

[0040] 22. Moving part 201. First iron core

[0041] 202. Three-phase winding; 203. Installation section

[0042] 204. Winding section; 205. First arc surface

[0043] 206. Second core iron core; 207. Permanent magnet.

[0044] 208, Second arc surface 30, Position sensor

[0045] 40. Swing bar; 50. Mattress mounting bracket

[0046] 51. Back support frame 52. Fixing frame

[0047] 53. Thigh support frame 54. Calf support frame

[0048] 60. Electric push rod; 70. Linkage rod

[0049] 80. Connecting shaft 801. Second mounting position

[0050] 90. Chair body. Detailed Implementation

[0051] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] Please refer to Figures 1 to 9 As shown, it illustrates the specific structure of various preferred embodiments of the present invention, including a swing frame assembly 10, a drive mechanism 20, and an electrical control assembly.

[0053] The driving mechanism is used to drive the swing frame to swing relative to the fixed frame. The first iron core includes a mounting part and six winding parts connected to the mounting part. The bottom of the mounting part has a first arc surface. The six winding parts are arranged at intervals along the first arc surface. The three-phase windings are respectively wound on the six winding parts. The other part includes a second core and a plurality of permanent magnets. The second core has a second arc surface that matches the first arc surface. The plurality of permanent magnets are arranged at intervals along the second arc surface on the second core, and the magnetic poles are arranged alternately in sequence.

[0054] The swing frame assembly 10 includes a fixed frame 11 and a swing frame 12 rotatably connected to the fixed frame 11. The drive mechanism 20 is used to drive the swing frame 12 to swing relative to the fixed frame 11. The drive mechanism 20 includes a stator portion 21 disposed on the fixed frame 11 and a mover portion 22 disposed on the swing frame 12. One of the stator portion 21 and the mover portion 22 includes a first iron core 201 and a three-phase winding 202. The first iron core 201 includes a mounting portion 203 and six winding portions 204 connected to the mounting portion 203. The bottom of the mounting portion 203 has a first arc surface 205. The six winding portions 204 The three-phase windings 202 are arranged sequentially at intervals along the first arc surface 205 and are respectively wound on six winding sections 204. The other part includes a second core iron 206 and a plurality of permanent magnets 207. The second core iron 206 has a second arc surface 208 that matches the first arc surface 205. The plurality of permanent magnets 207 are arranged sequentially at intervals along the second arc surface 208 on the second core iron 206, and the magnetic poles are arranged alternately in sequence. The electrical control component includes a controller for driving the three-phase windings 202 and a position sensor 30 for detecting the swing position of the swing frame 12. The controller controls the three-phase windings 202 based on the position information fed back by the position sensor 30.

[0055] The swing frame 12 has a fixed state, a free swing state, and a commanded swing state. In the fixed state, the controller controls the three-phase winding 202 to be short-circuited. In the free swing state, the controller controls the three-phase winding 202 to be open-circuited. In the commanded swing state, the controller can receive the current information fed back by the three-phase winding 202 and then control the current through the three-phase winding 202.

[0056] The commanded swing state can include large-amplitude pendulum motion, small-amplitude pendulum motion, and natural swing motion. In both large-amplitude and small-amplitude pendulum motions, the controller drives the swing throughout the entire swing via the three-phase winding 202. In the natural swing motion, when the swing frame 12 is at its highest point on the left or right, the controller controls the three-phase winding 202 to open, and the swing begins to swing forward under the action of gravity and inertia. The height of the beginning of the forward swing of the swing frame 12 is higher than the height of the end of the forward swing of the swing frame 12. When the swing frame 12 begins to swing backward under the action of gravity and inertia, the controller controls the current through the three-phase winding 202 to make the height of the end of the reverse swing of the swing frame 12 equal to the height of the beginning of the forward swing of the swing frame 12, based on the position information fed back by the position sensor 30 and the current information fed back by the three-phase winding 202.

[0057] See Figure 3 As shown, the six winding sections 204 and the multiple permanent magnets 207 are arranged at equal intervals. The distance between adjacent winding sections 204 is smaller than the distance between adjacent permanent magnets 207, and the bottom area of ​​the winding section 204 is smaller than the top area of ​​the permanent magnet 207.

[0058] See Figure 4 As shown, the three-phase winding 202 is arranged in a Y-shape on six winding sections 204. The three-phase winding 202 is the UVW winding.

[0059] See Figure 1 and Figure 2 As shown, each of the four corners of the swing frame 12 is rotatably connected to a swing rod 40. The end of the swing rod 40 away from the swing frame 12 is rotatably connected to the fixed frame 11. The second core 206 of the moving part 22 is fixed to one of its swing rods 40. Correspondingly, the fixed frame 11 is provided with a first mounting position 101 for the stator part 21 to be installed in the moving part 22. The first core 201 of the stator part 21 is fixed in the first mounting position 101. The position sensor 30 is a magnetic encoder. Correspondingly, a magnet is provided at the rotatable connection between the fixed frame 11 and the swing frame 12. The position sensor 30 is provided with a magnet.

[0060] Specifically, see Figures 5 to 7As shown, a mattress mounting bracket 50 is fixed on the rocking frame 12. In this embodiment, the fixed frame 11 includes a top frame 111 and four support legs 112 connected to the bottom of the top frame 111. The rocking frame 12 includes a bottom frame 121 and a first support frame 122 connected to the top of the bottom frame 121. Four rocking rods 40 are connected to the four corners of the bottom frame 121. The top of the first support frame 122 extends upward beyond the top of the top frame 111. The mattress mounting bracket 50 is fixed on the first support frame 122. The mattress mounting bracket 50 includes a back support frame 51, a fixed frame 52, a thigh support frame 53, and a calf support frame 54 that are hinged together in sequence. The fixed frame 52 is fixed on the first support frame 122. Electric push rods 60 are connected between the back support frame 51 and the first support frame 122, and between the thigh support frame 53 and the first support frame 122. A linkage rod 70 is connected between the thigh support frame 53 and the calf support frame 54. Eleven permanent magnets 207 are provided.

[0061] See Figure 8 and Figure 9 As shown, each of the four corners of the rocking frame 12 is rotatably connected to a rocking rod 40. The end of the rocking rod 40 away from the rocking frame 12 is rotatably connected to the fixed frame 11. Among the four rocking rods 40, two rocking rods 40 arranged opposite each other are connected by a connecting shaft 80. The connecting shaft 80 is fixed with a second mounting position 801 for mounting the moving part 22. The first iron core 201 of the moving part 22 is fixed on the second mounting position 801. Correspondingly, the second iron core 206 of the stator part 21 is fixed on the fixed frame 11 and is arranged corresponding to the moving part 22. Specifically, a chair body 90 is fixed on the rocking frame 12.

[0062] In this embodiment, the fixed frame 11 includes a base frame 113 and a second support frame 114 disposed on the top of the base frame 113. Side plates 115 are disposed on opposite sides of the top of the second support frame 114. One end of each of the four swing rods 40 is rotatably connected to the top corner of the corresponding side plate 115. The rocking frame 12 includes two mounting strips 123. The other end of each of the four swing rods 40 is rotatably connected to the end of the mounting strip 123. The moving part 22 is fixed on the second support frame 114. The chair body 90 is mounted on the two mounting strips 123. Nine permanent magnets 207 are provided.

[0063] The key design feature of this utility model is:

[0064] The main features are a drive mechanism consisting of a stator and a mover. One of the stator and mover components includes a first iron core and three-phase windings, while the other includes a second iron core and multiple permanent magnets. The drive mechanism works in conjunction with the stator and mover components to make the swing frame swing relative to the fixed frame. This eliminates the need for a motor gearbox and drive shaft, allowing the entire swing drive structure to operate quietly. Furthermore, the controller uses position information from the position sensor to control the three-phase windings. At any point during the swing, the electromagnetic coils of the three-phase windings can increase or decrease the driving force, making it easier to achieve variable speed and swing amplitude on the swing curve.

[0065] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A silent swing drive structure, characterized in that... ,include: A swing frame assembly, the swing frame assembly comprising a fixed frame and a swing frame rotatably connected to the fixed frame; A driving mechanism is provided for driving the swing frame to swing relative to the fixed frame. The driving mechanism includes a stator part disposed on the fixed frame and a mover part disposed on the swing frame. One of the stator part and the mover part includes a first iron core and three-phase windings. The first iron core includes a mounting part and six winding parts connected to the mounting part. The bottom of the mounting part has a first arc surface. The six winding parts are arranged at intervals along the first arc surface. The three-phase windings are respectively wound on the six winding parts. The other part includes a second core and a plurality of permanent magnets. The second core has a second arc surface that matches the first arc surface. The plurality of permanent magnets are arranged at intervals along the second arc surface on the second core, and the magnetic poles are arranged alternately. An electrical control assembly includes a controller for driving three-phase windings and a position sensor for detecting the swing position of the swing frame. The controller controls the three-phase windings based on the position information fed back by the position sensor.

2. The silent rocking drive structure according to claim 1, characterized in that, The swing frame has a fixed state, a free swing state, and a commanded swing state. In the fixed state, the controller controls the three-phase windings to be short-circuited. In the free swing state, the controller controls the three-phase windings to be open-circuited. In the commanded swing state, the controller can receive the current information fed back from the three-phase windings and then control the current passing through the three-phase windings.

3. The silent rocking drive structure according to claim 1, characterized in that, The three-phase windings are arranged in a Y-shape on the six winding sections.

4. The silent rocking drive structure according to claim 1, characterized in that, The position sensor is a magnetic encoder. Correspondingly, a magnet is provided at the rotational connection between the fixed frame and the swing frame, and the position sensor is set with a corresponding magnet.

5. A silent rocking drive structure according to claim 1, characterized in that, The six winding sections and multiple permanent magnets are arranged at equal intervals, with the spacing between adjacent winding sections being smaller than the spacing between adjacent permanent magnets.

6. The silent rocking drive structure according to claim 1, characterized in that, The bottom area of ​​the winding section is smaller than the top area of ​​the permanent magnet.

7. A silent rocking drive structure according to any one of claims 1 to 6, characterized in that, The four corners of the swing frame are rotatably connected to swing rods. The end of the swing rod away from the swing frame is rotatably connected to the fixed frame. The second iron core of the moving part is fixed to one of its swing rods. Correspondingly, the fixed frame is provided with a first mounting position for the stator part to be installed in the moving part. The first iron core of the stator part is fixed in the first mounting position.

8. A silent rocking drive structure according to any one of claims 1 to 6, characterized in that, Each of the four corners of the swing frame is rotatably connected to a swing rod. The end of the swing rod away from the swing frame is rotatably connected to a fixed frame. Among the four swing rods, two swing rods arranged opposite each other are connected by a connecting shaft. A second mounting position for mounting the moving part is fixed on the connecting shaft. The first iron core of the moving part is fixed on the second mounting position. Correspondingly, the second iron core of the stator part is fixed on the fixed frame and is arranged corresponding to the moving part.

9. A rocking bed, characterized in that, It includes a mattress mounting bracket and a silent rocking drive structure as described in any one of claims 1 to 8, wherein the mattress mounting bracket is fixed to the rocking frame.

10. A rocking chair, characterized in that, The chair includes a chair body and a silent rocking drive structure as described in any one of claims 1 to 8, wherein the chair body is fixed to the rocking frame.

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