WO2020119406A1

WO2020119406A1 - Automatic foldable dining table

Info

Publication number: WO2020119406A1
Application number: PCT/CN2019/119562
Authority: WO
Inventors: 施东钱
Original assignee: 施东钱
Priority date: 2018-12-11
Filing date: 2019-11-19
Publication date: 2020-06-18
Also published as: CN109480488A

Abstract

An automatic foldable dining table, comprising a tabletop and table legs (3). The tabletop comprises a fixed portion (1), a rotating portion, and folding portions (2) located on two sides of the fixed portion. A circular groove is concavely formed in the upper end face of the fixed portion (1). A turnplate (8) is horizontally rotated in the circular groove and is controlled by a driving mechanism that is a first motor (7) provided at the lower end of the fixed portion (1). A second rotating shaft (12) penetrating to the lower end of the fixed portion (1) and electrically connected to the first motor (7) is vertically provided at the bottom of the circular groove. An intermittent mechanism driving the turnplate (8) to rotate intermittently is provided between the second rotating shaft (12) and the turnplate (8). The rotating portion (201) extends from one end, close to the fixed portion (1), of the folding portion (2) to the center of the fixed portion (1). The rotating portion (201) is rotatably connected to a support base (101) at the lower end of the fixed portion (1). Rotation of the rotating portion (201) is controlled by a second motor (4) that is a self-locking motor. Forward rotating, stopping, and reverse rotating of the second motor (4) are controlled by a first control circuit. The automatic foldable dining table is high in automation level, the turnplate (8) can automatically rotate intermittently, and the folding portions (2) can be completely folded for storage, so that dining comfort of people is improved.

Description

Automatic folding table technical field

[0001] The present invention relates to a dining table, and more specifically, it relates to an automatic folding dining table.

Background technique

[0002] When people eat at home, they generally use a square table for 4-6 people, but when entertaining guests, they usually place a large round table on the square table, put a turntable on the round table, and then place it on the turntable. For dishes, the existing turntable is generally placed directly on the round table. After use, remove the turntable and round table and stand on the side of the wall. It is easy for children to overturn the turntable and round table when playing by the round table and round table. Injury is caused, and the turntable and round table stand sideways on the wall, which affects the beauty of the room.

[0003] According to the above problems, the Chinese patent with the application number 201621488051.4 discloses a sound-controlled thermal insulation folding dining table, the tabletop of the folding dining table includes a fixed part, a rotating part and two folding parts, the rotating part includes a turntable, and the motor drives the turntable continuously Rotate, when the turntable is in a continuous rotation state, the diners may leave the tray in the process of picking dishes, which may easily cause the soup to splash on the turntable.

Summary of the invention

technical problem

[0004] In view of the above-mentioned existing technical problems, the object of the present invention is to: propose a folding table in which the turntable rotates intermittently.

Solution to the problem

Technical solution

[0005] To achieve the above object, the present invention proposes a new technical solution: an automatic folding dining table, including a table top and a table leg, the table top is fixed on the table leg, the table top includes a fixed part, a rotating part and two folding parts, the A circular groove is recessed on the upper end surface of the fixing part, and a turntable is horizontally arranged in the circular groove, the turntable is controlled by a driving mechanism, the driving mechanism is a first motor, and the first motor is arranged at a lower end of the fixing part, A second rotating shaft penetrating to the lower end of the fixed portion is vertically provided at the bottom of the circular groove, the second rotating shaft is electrically connected to the first motor, and an intermittent driving intermittent rotation of the rotating disk is provided between the second rotating shaft and the rotating disk Mechanism, the folding part is symmetrically arranged on both sides of the fixed part with the center of the circular groove as the center of symmetry, and the folding part A rotating portion is integrally extended downward from one end of the fixed portion toward the central direction of the fixed portion. Rotating rods are integrally extended at both ends of the rotating portion. At the lower end of the fixed portion, support seats are fixedly provided at both ends of the rotating portion. The ends are respectively rotatably connected to the support base, and a second motor is electrically connected to the opposite ends of the two rotating rods at the lower end of the fixed part, the second motor is a self-locking motor, and the second motors are connected in series with each other And the forward transmission, stop and reverse rotation of the second motor are controlled by the first control circuit.

[0006] According to the above technical solution: Compared with the prior art rotary disk, the rotary disk of this solution is provided with an intermittent mechanism. When the first motor continuously rotates, it can drive the second rotary shaft to continuously rotate, and the interval between the second rotary shaft and the rotary disk The mechanism is driven by the second rotating shaft to make the turntable automatically rotate intermittently. When the turntable stops rotating, people can rest assured that when the turntable rotates, people can eat the dishes, so that everyone can get what they want to eat. Dishes, at the same time avoid the soup from splashing on the turntable with the displacement of the dinner plate; 5 see some folding parts are folded or folded by artificial flipping, and then use the limit mechanism to maintain the folded part folded or folded state, the operation is complicated, In this solution, the forward rotation and reverse rotation of the second motor are adopted to realize the upward folding of the folding part by 180°, unfolding flush with the fixing part or turning down by 180°, and folding and storing it at the lower end of the fixing part. The degree of automation is high. High, can realize the automatic intermittent rotation of the turntable, so that people can orderly eat.

[0007] The present invention is further configured as follows: the intermittent mechanism includes a lower surface of the turntable around the center of the turntable convexly spaced 12 protrusions, the protrusions counterclockwise in turn are the first protrusion, the second protrusion, A third protrusion to a twelfth protrusion, a toggle mechanism is provided at the bottom of the circular groove, the toggle mechanism includes a toggle lever extending horizontally outward from the second rotating shaft, and formed by the end of the toggle lever rotating The distance between the two intersection points formed by the intersection of the trajectory circle and the circle surrounded by the protrusions is less than the distance between the first protrusion and the third protrusion, and the second rotating shaft is provided with a limit position for excessive rotation of the limit turntable mechanism.

[0008] According to the above technical solution: The trajectory circle of the rotation of the lever of this solution intersects with the circle formed by the protrusions and the distance of the intersection point is shorter than the distance between the first protrusion and the third protrusion. The second protrusion will not touch the third protrusion before the second protrusion rotates counterclockwise as the lever moves, and the turntable rotates at this time, and then after the second protrusion leaves the lever, the turntable Stop rotating, at this time, the third protrusion rotates to the original second protrusion position, and when the dial lever rotates to the third protrusion again with the rotation of the second rotating shaft, the third protrusion is turned again to make the turntable rotate again, The automatic intermittent rotation of the turntable is realized in turn.

[0009] The present invention is further configured as follows: the limit mechanism is included at the top of the second rotating shaft with the second rotating shaft as the center The core is fixed with a rotating ring with a gap and intersecting with the ring formed by the protrusion, the lever is arranged on the side of the gap near the direction of rotation of the first motor and there is a first distance greater than or equal to the diameter of the protrusion, There is a second distance greater than the first distance between the shift lever and the other side of the notch, when the rotating ring intersects the ring formed by the protrusion, the outer wall of the rotating ring is cut out simultaneously with the first protrusion and the third protrusion And the second protrusion is located inside the swivel.

[0010] According to the above technical solution: After the above-mentioned lever toggle the protrusion, there is inertia after the rotation of the turntable and it is not easy to accurately control the rotation angle. After setting the limit mechanism, when the rotation ring intersects the circle formed by the protrusion, the rotation ring The outer wall of the first is cut out at the same time as the first protrusion and the third protrusion. At this time, the second protrusion is located inside the swivel ring. When the lever is rotated to the second protrusion, the second protrusion will be moved. With the rotation of the two rotating shafts, the second protrusion gradually slides out of the rotating ring from the first distance, at this time the turntable rotates by 30°, and at the same time the first protrusion enters the inside of the rotating ring from the second distance of the gap, limiting the turntable The inertial rotation of the, at this time, the lever is simultaneously circumscribed with the twelfth protrusion and the second protrusion. When the lever is rotated to turn the twelfth protrusion again, the twelfth protrusion gradually moves from the first distance Slide out the swivel ring, and then perform the cycle operation in turn. Every turn of the second shaft, the turntable in this scheme rotates intermittently by 30°

[0011] The present invention is further configured as follows: The control circuit includes a forward rotation circuit, a reverse circuit and a bidirectional automatic reset rocker switch, the bidirectional automatic reset rocker switch includes a rocker, and the second motor is realized by turning the rocker Turn on the forward circuit or reverse circuit.

[0012] According to the above technical solution: The two-way automatic reset rocker switch of this solution is not in the prior art, which connects the forward rotation circuit and the reverse rotation circuit by toggling the rocker arm to the left and right respectively, to realize the unfolding and folding of the folding part, when the rocker is released When the arm is in position, the rocker arm is automatically centered. At this time, the motor stops rotating. By simply operating the switch, the folding portion can be unfolded or folded, and the operation is simple.

[0013] The present invention is further configured as follows: the fixed portion and the folded portion is unfolded between the side opposite to the fixed portion is provided with a support mechanism, the support mechanism includes a fixed portion on both sides of the fixed portion is recessed A first groove provided, a support block that can be completely retracted into the first groove or partially protruded from the first groove is provided in the first groove, the support block is made of iron, and the first recess An electromagnet is provided at the bottom of the slot, and a return spring is provided between the electromagnet and the support block. The power supply or power loss of the electromagnet is controlled by the second control circuit. A second groove corresponding to the first groove is provided on the side, and the second groove is inserted and fitted when the support block is extended.

[0014] According to the above technical solution: The second motor in this solution is a self-locking motor that can keep rotating after being stopped The shaft no longer rotates, but only the self-locking motor is used to bear the load after the folded part is unfolded. It is easy to cause damage to the self-locking motor under the action of external force. When the electromagnet is de-energized, the extension of the support block can automatically realize the cooperation with the folding part to achieve the supporting effect, and increase the bearing capacity of the folding part. When the electromagnet is energized, the support block retracts without affecting the second motor to drive the folding part Fold down.

[0015] The present invention is further configured as follows: The second control circuit includes an electromagnet and a second control switch connected in series with each other.

[0016] According to the above technical solution: The second control circuit is simple to set up, and the second control circuit is connected or disconnected by the operation of the second control switch, and the electromagnet is powered on or off.

[0017] The present invention is further configured as follows: the lower end of the fixing portion is fixedly provided with a U-shaped mounting bracket with an upward opening, and the first motor is fixedly disposed on the mounting bracket.

[0018] According to the above technical solution: the installation of the mounting bracket enables the rotation axis of the first motor to be vertically connected to the second rotation axis to electrically connect and fit.

Beneficial effects of invention

Beneficial effect

[0019] Compared with the prior art, the present invention has the following advantages: an intermittent mechanism is added, which can drive the second rotating shaft to continuously rotate when the first motor continuously rotates, and the intermittent mechanism between the second rotating shaft and the turntable is The two-shaft drive enables the turntable to rotate intermittently automatically. When the turntable stops, people can rest assured that they can eat dishes; when the turntable rotates, people can eat the dishes from the folder. This can ensure that everyone can catch the dishes they want to eat, while avoiding The soup is splashed on the turntable with the displacement of the dinner plate; See the folding of some folding parts by artificial flipping. See the unfolding or folding, and then use the limit mechanism to keep the folded part unfolded or folded. The operation is complicated. This solution The forward rotation and reverse rotation of the second motor are used to realize that the folding part is turned upwards by 180°, unfolded flush with the fixed part or turned down by 180°, and folded and stored at the lower end of the fixed part. The degree of automation is high. The automatic folding table has a high degree of automation and can The automatic intermittent rotation of the turntable and the complete storage and folding of the folding part are realized, so that people can eat comfortably and orderly.

Brief description of the drawings

BRIEF DESCRIPTION

[0020] FIG. 1 is a left side view of an automatic folding dining table after being unfolded in this embodiment; [0021] FIG. 2 is a front view of an automatic folding dining table after being unfolded in this embodiment;

[0022] FIG. 3 is a sectional view taken along line A-A of FIG. 2;

[0023] FIG. 4 is a bottom view of a folded dining table after being unfolded in this embodiment;

[0024] FIG. 5 is a bottom view of a folding dining table after being folded in this embodiment;

[0025] FIG. 6 is an axonometric view of a folding dining table after being folded in this embodiment;

7 is a schematic diagram of a first control circuit in this embodiment;

[0027] FIG. 8 is a schematic diagram of a second control circuit in this embodiment;

[0028] FIGS. 9-11 are state diagrams of the turntable under the action of the intermittent mechanism in this embodiment.

[0029] In the drawings: 1. Fixing part; 101. Support seat; 102. First groove; 2. Folding part; 201. Rotating part; 202. Rotating rod; 203. Second groove; 3. Table leg; 4. Second motor; 5. Mounting frame; 6. Two-way automatic reset rocker switch; 601, rocker arm; 7. First motor; 8. Turntable; 801, first rotating shaft; 9. Electromagnet; 10. Support block 11. Return spring; 12. Second rotating shaft; 13. Swivel ring; 14. Support rod; 15. Lever; 16. First protrusion; 17. Second protrusion; 18. Third protrusion; 19. Twelfth protrusion; 20. Second control switch.

The best embodiment of the invention

Best Mode of the Invention

[0030] The following describes the specific implementation manners of the present invention in further detail with reference to the accompanying drawings, so that the technical solutions of the present invention are easier to understand and grasp.

Invention Example

Examples

[0031] An automatic folding dining table, as shown in FIGS. 1 to 6, includes a table top and a table leg 3, the table top is fixed on the table leg 3, the table top includes a fixing portion 1, a rotating portion, and two folding portions 2. The upper end surface of the part 1 is recessed with a circular groove. The rotating part includes a turntable 8 that is horizontally rotated and arranged in the circular groove. The turntable 8 is rotatably connected to the center of the bottom of the circular groove through a first rotating shaft 801 at the bottom center A driving mechanism of the turntable 8, the driving mechanism includes a first motor 7, and a second rotating shaft 12 penetrating to the lower end of the fixing portion 1 is vertically provided in the circular groove, and the second rotating shaft 12 is electrically connected to the first motor 7 An intermittent mechanism that drives the intermittent rotation of the turntable 8 is provided between the second rotating shaft 12 and the turntable 8.

[0032] The specific setting of the intermittent mechanism refers to FIGS. 9-11, the intermittent mechanism includes a first rotating shaft 8 at the lower end of the turntable 8 01 is n circular protrusions convexly spaced at the center in the center. In this solution, 12 protrusions are preferably provided. As shown in FIG. 2, the first protrusion 16, the second protrusion 17, and the third The protrusion 18 to the twelfth protrusion 19 are provided with a toggle mechanism rotating at the bottom of the circular groove. The toggle mechanism includes a lever 15 extending horizontally outward from the second rotating shaft 12, and the end of the lever 15 rotates automatically The distance between the two intersection points formed by the later formed track circle and the circle formed by the protrusions is smaller than the distance between the first protrusion 16 and the third protrusion 18, in order to further accurately determine the angle of intermittent rotation of the turntable 8 (this The intermittent rotation angle of the solution is 30°, and the rotation angle is related to the number of protrusions set, rotation angle=3607 number of protrusions), a limit mechanism for excessive rotation of the limit dial 8 is provided on the second rotating shaft 12, the limit The positioning mechanism includes a rotating ring 13 with a gap and intersecting the ring surrounded by the protrusions fixed on the top of the second rotating shaft 12 with the second rotating shaft 12 as the center. The rotating ring 13 extends horizontally from both sides of the second rotating shaft 12 The support rod 14 and the end of the swivel ring 13 away from the turntable 8 are fixed by welding or screw fastening. There is a gap between the support rod 14 and the protrusion. When the swivel ring 13 rotates, the support rod 14 cannot touch any protrusion. The shift lever 15 is disposed on the side where the gap is close to the rotation direction of the first motor 7 (in this solution, the rotation direction of the first motor 7 is forward rotation and the rotation direction of the turntable 8 is reverse rotation) and there is a gap between the shift lever 15 and the gap Or a first distance equal to the diameter of the protrusion, there is a second distance greater than the first distance between the lever 15 and the other side of the notch, when the swivel ring 13 intersects the circle surrounded by the protrusion, the outer wall of the swivel ring 13 first The first protrusion 16 and the third protrusion 18 are cut out at the same time. At this time, the second protrusion 17 is located inside the swivel ring 13. When the lever 15 is rotated to the second protrusion 17, the second protrusion 17 is toggled With the rotation of the second rotating shaft 12, the second protrusion 17 gradually slides out of the swivel ring 13 from the first distance, at this time the turntable 8 rotates by 30°, and the first protrusion 16 enters from the second distance of the gap In the interior of the swivel ring 13, at this time, the lever 15 is simultaneously circumscribed with the twelfth protrusion 19 and the second protrusion 17, when the lever 15 rotates to turn the twelfth protrusion 19 again, the twelfth protrusion Starting from step 19, the swivel ring 13 is gradually slid out of the first distance, and then the cyclic operation is performed in sequence. Every time the second rotating shaft 12 rotates once, the turntable 8 in this scheme rotates intermittently by 30°. A U-shaped mounting bracket 5 is fixed and fixed on the lower end of the fixing portion 1 by screws. Referring to FIG. 2, the first motor 7 is fixedly disposed on the mounting bracket 5, and the second rotating shaft 12 is electrically connected to the first motor 7. The lower end of 1 is provided with a first control switch that controls the opening and closing of the first motor 7.

[0033] Referring to FIG. 1, FIG. 4 and FIG. 5, the two folds 2 are mirror-symmetrically arranged with the center of the circular groove as the center of symmetry, the thickness of the fold 2 is greater than that of the fixed part 1, and the fold 2 is close to the fixed part 1 A rotating portion 201 is integrally extended toward the center of the fixing portion 1 at one end and a rotating rod 202 is integrally extended at both ends of the rotating portion 201. At the lower end of the fixing portion 1, a support base 101 is fixedly provided at both ends of the rotating portion 201, and the rotating rod 202 The two ends are respectively connected with the support base 10 1. Rotating connection. A bearing is fitted at the connection between the support base 101 and the rotating rod 202. A second motor 4 is electrically connected to the lower end of the fixing part 1 at the opposite end of the two rotating rods 202, and the second motors 4 are connected in series with each other. And its forward and reverse rotations are controlled by a first control circuit. Referring to FIG. 7, the first control circuit includes a forward rotation circuit and a reverse rotation circuit, and the second motor 4 is rotated forward, stopped, and reversed by turning the rocker arm 601 Switched bidirectional automatic reset rocker arm 601 switch 6. The bidirectional automatic reset rocker arm 601 switch 6 is a prior art. A 6-pin three-position bi-directional automatic reset rocker arm 601 switch 6 with brand E-TEN223 can be used. The switch 6 of the bidirectional automatic reset rocker arm 601 is provided at the lower end of the fixed part 1. When the rocker arm 601 of this solution is turned left and right, the forward rotation circuit and the reverse circuit are respectively connected to realize the unfolding and folding of the folding part 2, when released In the case of the rocker arm 601, the rocker arm 601 is automatically centered. At this time, the motor stops rotating. In addition, the first motor 7 and the second motor 4 are both self-locking motors, and a Xinhuatong model 555 self-locking motor may be used.

[0034] On the opposite sides of the fixed portion 1 and the folded portion 2 after being unfolded, a supporting mechanism for keeping the folded portion 2 stretched is provided.

The supporting mechanism includes a first groove 102 that is recessed on both sides of the fixed portion 1 provided with the folding portion 2, the first groove 102 is preferably provided symmetrically on each side, and the first groove 102 is provided with a fully retractable The first groove 102 or the support block 10 partially protruding from the first groove 102 is preferably made of iron, an electromagnet 9 is provided at the bottom of the first groove 102, and a electromagnet 9 is provided between the electromagnet 9 and the support block 10 The second return spring 11 realizes the retracting or extending of the support block 10 through the electrification or de-energization of the electromagnet 9, and the electrification or de-energization of the electromagnet 9 is controlled by the second control circuit. 8, including the electromagnet 9 and the second control switch 20 connected in series, when the circuit is connected, the electromagnet 9 is energized, the support block 10 is retracted; when the circuit is disconnected, the electromagnet 9 is de-energized, and the support block 10 is reset The spring 11 protrudes under the action of, the second groove 203 corresponding to the first groove 102 is provided on the side opposite to the fixed block after the folding portion 2 is unfolded, and the second groove 203 is inserted when the support block 10 is extended Cooperate.

[0035] When the folding dining table of the present solution is in a folded state, the folding portion 2 rotates 180° inwardly and is in a locked state. At this time, the first motor 7 and the second motor 4 are both stopped, and the second control circuit is connected The electromagnet 9 is retracted into the first groove 102 when it is powered on. When the folding dining table needs to be unfolded, toggle the rocker arm 601 of the bidirectional automatic reset rocker arm 601 switch 6 to the left. At this time, the motor rotates forward and the folding part 2 Flip outward, when the folding part 2 flips outward 180°, release the rocker arm 601, the rocker arm 601 is automatically centered, at this time the second motor 4 stops rotating, and then the second control circuit 20 is opened by the second control switch 20 At this time, the electromagnet 9 is de-energized, and the support block 10 partially extends out of the first groove 102 and the second groove 203 under the action of the return spring 11, and when the turntable 8 is ready to eat, the first control is turned on Switch, the first motor 7 rotates to drive the intermittent mechanism to make the turntable 8 Start intermittent 30° rotation, at this time you can start dining; when you need to fold the table again, first turn off the first control switch to stop the turntable 8 and then press the second control switch 20 to connect the second control circuit and the electromagnet 9 When the power is turned on, the support block 10 retracts into the first groove 102, and then the rocker arm 601 is turned to the right. At this time, the second motor 4 turns over the folding part 2 and turns down. After turning down 180°, the rocker arm is released 601. The second motor 4 stops rotating. Since the first motor 7 and the second motor 4 are self-locking motors, the folded portion 2 after folding does not rotate. The folded portion 2 in this solution can be stored at 180° in the fixed portion 1 At the lower end, the legs of the diners will not be blocked, and the turntable 8 will automatically rotate intermittently during the meal. When the turntable 8 stops, the dishes will be picked up. When the turntable 8 turns, you can prepare to pick the next dish. situation.

[0036] The above is only a typical example of the present invention. In addition, the present invention may have many other specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the protection of the present invention. within.

Claims

[Claim 1] An automatic folding dining table, comprising a table top and a table leg (3), the table top being fixed on the table leg (3), characterized in that the table top comprises a fixing part (1), a rotating part and two folding parts ( 2), the upper end surface of the fixing portion (1) is recessed with a circular groove, and a rotary disk (8) is horizontally arranged in the circular groove, the rotary disk (8) is controlled by a driving mechanism, and the driving mechanism is the first A motor (7), the first motor (7) is disposed at the lower end of the fixing portion (1), and a second rotating shaft (12) penetrating to the lower end of the fixing portion (1) is vertically provided at the bottom of the circular groove, the second rotating shaft (12) electrically connected to the first motor ⑺, an intermittent mechanism for intermittently rotating the turntable (8) is provided between the second rotating shaft (12) and the turntable (8), and the folding portion (2) The center of the circular groove is symmetrically arranged on both sides of the fixing portion (1), and one end of the folding portion (2) close to the fixing portion (1) downwardly extends in the direction of the center of the fixing portion (1) with a rotating portion (201) ), a rotating rod (202) is integrally extended at both ends of the rotating part (201), a supporting seat (101) is fixedly arranged at both ends of the rotating part (201) at the lower end of the fixing part (1), and the rotating rod (202) ) Are connected to the support base (101) at both ends, and a second motor (4) is electrically connected to the two ends of the two rotating rods (202) at the lower end of the fixed part (1), The second motor (4) is a self-locking motor, the second motors (4) are connected in series with each other, and forward transmission, stop and reverse rotation of the second motor (4) are controlled by the first control circuit.

[Claim 2] An automatic folding dining table according to claim 1, characterized in that the intermittent mechanism includes 12 protrusions protruding from the lower end surface of the turntable (8) circumferentially spaced around the center of the turntable (8), The protrusions are the first protrusion (16), the second protrusion (17), the third protrusion (18) to the twelfth protrusion (19) in anticlockwise order, and the bottom of the circular groove is provided with a toggle Mechanism, the toggle mechanism includes a toggle lever (15) extending horizontally outward from the second rotating shaft (12), and a track circle formed by the end of the toggle lever (15) autorotating intersects with the circle surrounded by the protrusion The distance between the formed two intersections is smaller than the distance between the first protrusion (16) and the third protrusion (18), and the second rotating shaft (12) is provided with a limit of excessive rotation of the limit dial (8) Bit institutions.

[Claim 3] An automatic folding dining table according to claim 2, characterized in that the position-limiting mechanism includes a notch fixed at the top of the second rotating shaft (12) with the second rotating shaft (12) as the center And a swivel ring (13) intersecting the circle formed by the protrusions, the lever (15) is disposed on the side of the notch close to the rotation direction of the first motor (7) and there is a diameter greater than or equal to the diameter of the protrusion the first Spacing, there is a second spacing greater than the first spacing between the lever (15) and the other side of the notch, when the swivel ring (13) intersects the circle surrounded by the protrusion, the outer wall of the swivel ring (13) and the second A protrusion (16) and a third protrusion (18) are simultaneously circumscribed and the second protrusion (17) is located inside the rotating ring (13).

[Claim 4] An automatic folding dining table according to any one of claims 1-3, characterized in that the control circuit includes a forward rotation circuit, a reverse rotation circuit and a bidirectional automatic reset rocker arm (601) switch ( 6) The switch (6) of the two-way automatic reset rocker arm (601) includes a rocker arm (601), and the second motor (4) is connected to the forward rotation circuit or the reverse rotation circuit by turning the rocker arm (601).

[Claim 5] An automatic folding dining table according to claim 4, wherein the fixing part (

1) A supporting mechanism is provided between the side opposite to the fixing portion (1) after the folding portion (2) is unfolded, the supporting mechanism includes recesses on both sides of the fixing portion (1) where the folding portion (2) is provided A first groove (102) is provided, and a support block (10) that can be completely retracted into the first groove (102) or partially extended from the first groove (102) is provided in the first groove (102) , The supporting block (10) is made of iron, an electromagnet (9) is provided at the bottom of the first groove (102), and an electromagnet (9) is provided between the electromagnet (9) and the supporting block (10) A return spring (11), the power supply or power loss of the electromagnet (9) is controlled by the second control circuit, and the side opposite to the fixing block after the folded portion (2) is unfolded is provided with a first groove (102) The corresponding second groove (203) is mated with the second groove (203) when the supporting block (10) is extended.

[Claim 6] An automatic folding dining table according to claim 5, characterized in that the second control circuit includes an electromagnet (9) and a second control switch (20) connected in series with each other.

[Claim 7] An automatic folding dining table according to claim 6, characterized in that the fixing part (

1) The lower end is fixedly provided with a U-shaped mounting bracket (5) whose opening is upward, and the first motor (7) is fixedly mounted on the mounting bracket (5).