Automatic rotating turntable mechanism

Abstract

The utility model discloses a turntable mechanism capable of rotating automatically. The turntable mechanism comprises a fixed chassis, a chain wheel, a rotating disc and a connecting shaft, the middle crankset is used for driving the rotating disc to rotate and rotate by itself through the ball rings on the upper end face and the lower end face and the balls, the rotating disc is driven by means of friction force between the balls and the rotating disc, and when external force is applied to the rotating disc to stop rotating, the crankset can still rotate normally under the condition that the balls rotate in situ. And the support of the chain wheel and the rotating disc depends on the ball ring, so that the flatness does not need to be adjusted independently after installation, and the overall assembly structure is simple.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of dining table, concretely relates to a rotary table mechanism of automatic rotation. BACKGROUND

[0002] In dining table, especially large dining table, in order to be convenient for dining personnel, a rotatable rotary table is usually arranged, and the rotary table is usually manually rotated, and some rotary tables are automatically rotated, but the rotary table of automatic rotation has complex structure and needs to be leveled. UTILITY MODEL CONTENTS

[0003] The utility model provides a rotary table mechanism of automatic rotation for solving the deficiency described in the prior art, and the assembly is completed without leveling and has simple structure.

[0004] The utility model adopts the technical scheme that:

[0005] A rotary table mechanism of automatic rotation, including fixed disc, tooth disc, rotary disc and connecting shaft, fixed disc, tooth disc and rotary disc are sequentially sleeved on connecting shaft from bottom to top;Fixed disc is equipped with first center shaft hole, and the upper end surface of fixed disc is fixedly provided with first ball ring, a plurality of balls are embedded in first ball ring at intervals, each ball rotates in situ, and rotary power structure is installed on fixed disc;Tooth disc is equipped with center let -go hole, and the outer circumferential surface of tooth disc is equipped with meshing tooth, and meshing tooth is engaged with driving gear of rotary power structure;The lower end surface of tooth disc is equipped with annular groove, and annular groove corresponds with first ball ring and each ball contacts with annular groove;Second ball ring is arranged on the upper end surface of tooth disc, a plurality of balls are embedded in second ball ring at intervals, and each ball rotates in situ;Rotary disc is equipped with second center shaft hole, rotary disc is sleeved on connecting shaft and rotates relative to connecting shaft, and the lower end surface of rotary disc contacts with each ball.Tooth disc is driven to rotate by driving gear, tooth disc is supported by first ball ring, and the annular groove in the lower end surface of tooth disc contacts with ball, and the ball in the upper end surface of tooth disc drives rotary disc to rotate through friction, and through the contact mode of ball, tooth disc is balanced and supported on one hand, and deviation during rotation is avoided, and on the other hand, space is provided for the rotation of tooth disc, because when rotary disc is stopped by external force, tooth disc can rotate in situ under the upper and lower balls, and realize self-rotation.

[0006] As a preferred scheme of the utility model, annular groove is arranged on the lower end surface of rotary disc, and each ball contacts with annular groove.The setting of annular groove can provide an assembly position guide for the installation of rotary disc, and when assembling, the ball into annular groove indicates that the assembly is in place, and each ball has the same height, after assembly, rotary disc is flat, and does not need to be leveled separately.

[0007] As a preferred scheme of the utility model, the inner diameter of the center letting hole is larger than the first center shaft hole and the second center shaft hole. The tooth disc can rotate together with the rotating disc or can rotate alone.

[0008] As a preferred scheme of the utility model, the connecting shaft is provided with an abutting outer edge at the end of the fixed disc, the outer diameter of the abutting outer edge is larger than the inner diameter of the first center shaft hole, the abutting outer edge exposes the first center shaft hole of the fixed disc and holds the fixed disc, the end of the connecting shaft beyond the rotating disc is threadedly connected with a locking sleeve, the locking sleeve limits the rotating disc, the tooth disc and the fixed disc on the connecting shaft, and avoids the rotating disc from being separated during rotation.

[0009] As a preferred scheme of the utility model, the upper end face of the rotating disc is fixedly provided with a tabletop supporting rod, and the tabletop can be assembled on the rotating disc and supported by the tabletop supporting rod.

[0010] As a preferred scheme of the utility model, the rotating power structure comprises a rotating motor and a driving gear, and the output shaft of the rotating motor is provided with the driving gear.

[0011] In use, the intermediate tooth disc drives the rotating disc to rotate and rotates itself through the upper and lower end ball rings and the balls, the rotating disc is driven by the friction force between the balls and the rotating disc, when the rotating disc is stopped by external force, the tooth disc can still rotate normally under the condition that the balls rotate in place, the rotating motor is not damaged, the tooth disc and the rotating disc are supported by the ball rings, and the flatness does not need to be adjusted after installation, and the overall assembly structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can be used to obtain other drawings without creative labor for the ordinary skilled in the art.

[0013] Figure 1 It is a structural schematic view of the utility model.

[0014] Figure 2 It is a structural schematic view of the utility model without the tabletop supporting rod and the fence connecting rod.

[0015] Figure 3 It is a structural schematic view of the fixed disc of the utility model.

[0016] Figure 4 It is a top view of the tooth disc of the utility model.

[0017] Figure 5 Figure 4 is a bottom view of the toothed disc of the utility model. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without any creative effort belong to the scope of protection of the utility model.

[0019] EMBODIMENT

[0020] An automatic rotating turntable mechanism, as shown in Figure 1 and 2 , comprises a fixed disc 1, a toothed disc 2, a rotating disc 3 and a connecting shaft 4, the fixed disc 1, the toothed disc 2 and the rotating disc 3 are sequentially sleeved on the connecting shaft 4 from bottom to top.

[0021] As shown in Figure 3 , the fixed disc 1 is provided with a first central shaft hole 11, and a first ball ring 12 is fixedly arranged on the upper end surface of the fixed disc 1, a plurality of balls 5 are arranged on the first ball ring 12 at intervals, and each ball 5 can rotate in place. A rotating power structure is arranged on the fixed disc 1, and the rotating power structure comprises a rotating motor 81 and a driving gear 82. The output shaft of the rotating motor 81 is provided with the driving gear 82. When installed, the shell of the rotating motor is arranged on the lower end surface of the fixed disc. A motor shaft hole is arranged on the fixed disc, the output shaft of the rotating motor passes through the motor shaft hole and is connected with the driving gear 82, so that the driving gear is driven, and the driving gear is engaged with the toothed disc 2 for transmission.

[0022] As shown in Figure 4 and 5 , the toothed disc 2 is provided with a central accommodation hole 21, and the inner diameter of the central accommodation hole is greater than that of the first central shaft hole. The toothed disc can rotate together with the rotating disc or can rotate alone.

[0023] The outer circumferential surface of the toothed disc 2 is provided with engagement teeth 22, and the engagement teeth 22 are engaged with the driving gear. The lower end surface of the toothed disc 2 is provided with an annular groove 23, the annular groove 23 corresponds to the first ball ring 12, and each ball 5 is in contact with the annular groove 23. A second ball ring 24 is fixedly arranged on the upper end surface of the toothed disc 2, a plurality of balls 5 are arranged on the second ball ring 24 at intervals, and each ball 5 can rotate in place.

[0024] The rotating disk 3 has a second central shaft hole 31, the inner diameter of which is smaller than the inner diameter of the central clearance hole. The rotating disk 3 is sleeved on the connecting shaft 4 and rotates relative to the connecting shaft 4. The lower end face of the rotating disk 3 contacts each ball 5. To facilitate assembly, an annular groove is provided on the lower end face of the rotating disk 3, and each ball 5 contacts the annular groove. The annular groove provides an assembly position guide for the installation of the rotating disk. When the ball enters the annular groove during assembly, it indicates that the assembly is in place. Moreover, all balls are at the same height. After assembly, the rotating disk is flat and does not require additional leveling.

[0025] A desktop support rod 6 is fixed to the upper end of the rotating disk 3. The desktop is assembled onto the rotating disk and supported by the desktop support rod.

[0026] The connecting shaft used has an abutting outer edge 41 at the end of the fixed disk 1, such as... Figure 1 As shown, the outer diameter of the abutting outer edge is larger than the inner diameter of the first central shaft hole. The abutting outer edge protrudes from the first central shaft hole of the fixed disk and supports the fixed disk. The end of the connecting shaft 4 that extends beyond the rotating disk 3 is threaded with a locking sleeve 42. The locking sleeve limits the rotating disk, the toothed disk and the fixed disk to the connecting shaft to prevent the rotating disk from disengaging during rotation.

[0027] A panel connecting rod 7 is fixed to the lower end of the fixed disc 1. The panel connecting rod is connected to the dining table panel for overall support.

[0028] During assembly, the fixed disc is supported as a whole because the connecting rod of the surrounding plate is fixed to the surrounding plate. The toothed disc 2 is placed so that the balls of the first ball ring are inserted into the annular groove, and the driving gear and the meshing gear mesh. The rotating disc 3 is placed so that the balls of the second ball ring enter the annular groove of the rotating disc 3. At this time, the first central shaft hole and the second central shaft hole are coaxial. The connecting shaft 4 is inserted from the bottom of the fixed disc upwards, and the abutting edge abuts against the lower end face of the fixed disc. After the upper end of the connecting shaft 4 protrudes from the second central shaft hole, it is threadedly connected to the locking sleeve 42. The locking sleeve 42 is located above the rotating disc.

[0029] During operation, the crankset is driven to rotate by the drive gear. The crankset is supported by the first ball ring, and the annular groove on the lower end face of the crankset contacts the ball. The ball on the upper end face of the crankset drives the rotating disk to rotate through friction. When the rotating disk is stopped by an external force, the crankset can rotate on its own by rotating the upper and lower balls in their original positions.

[0030] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The above description is merely preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art, according to the technical solution and the inventive concept of the present application, can make equivalent substitutions or changes within the technical range disclosed by the present application, which should be included in the protection scope of the present application.

Claims

1. An automatically rotating turntable mechanism, characterized in that: The assembly includes a fixed disc (1), a toothed disc (2), a rotating disc (3), and a connecting shaft (4). The fixed disc (1), toothed disc (2), and rotating disc (3) are sequentially mounted on the connecting shaft (4) from bottom to top. The fixed disc (1) has a first central shaft hole (11), and a first ball ring (12) is fixedly mounted on the upper end face of the fixed disc (1). Several balls (5) are intermittently embedded on the first ball ring (12), and each ball (5) rotates in its original position. A rotating power structure is installed on the fixed disc (1). The toothed disc (2) has a central clearance hole (21), and meshing teeth (22) are provided on the outer circumferential surface of the toothed disc (2) for meshing. The tooth (22) meshes with the drive gear of the rotating power structure; the lower end face of the toothed disc (2) is provided with an annular groove (23), the annular groove (23) corresponds to the first ball ring (12) and each ball (5) contacts the annular groove (23); a second ball ring (24) is provided on the upper end face of the toothed disc (2), and several balls (5) are embedded on the second ball ring (24) at intervals, and each ball (5) rotates in place; the rotating disk (3) is provided with a second central shaft hole (31), the rotating disk (3) is sleeved on the connecting shaft (4) and rotates relative to the connecting shaft (4), and the lower end face of the rotating disk (3) contacts each ball (5).

2. The automatically rotating turntable mechanism according to claim 1, characterized in that: An annular groove is provided on the lower end face of the rotating disk (3), and each ball (5) contacts the annular groove.

3. The automatically rotating turntable mechanism according to claim 1 or 2, characterized in that: The inner diameter of the center clearance hole is larger than that of the first central shaft hole and the second central shaft hole.

4. The automatically rotating turntable mechanism according to claim 3, characterized in that: The connecting shaft (4) has an abutting outer edge (41) at the end of the fixed disk (1), and a locking sleeve (42) is threadedly connected to the end of the connecting shaft (4) that extends beyond the rotating disk (3).

5. The automatically rotating turntable mechanism according to claim 4, characterized in that: A desktop support rod (6) is fixed to the upper end of the rotating disk (3); a surrounding plate connecting rod (7) is fixed to the lower end of the fixed disk (1).

6. The automatically rotating turntable mechanism according to claim 4, characterized in that: The rotational power structure includes a rotational motor (81) and a drive gear (82), with the drive gear (82) mounted on the output shaft of the rotational motor (81).

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