Rotary supporting structure of rotary table

Abstract

The utility model discloses a rotary table rotation supporting structure which comprises a base and a movable table rotationally arranged on the base, an annular installation cavity is formed in the base, and an outer positioning annular groove and an inner positioning annular groove are formed in the two sides of the interior of the annular installation cavity respectively. The movable disc is rotationally connected into the annular mounting cavity, and the movable disc is provided with an outer supporting ring located in the outer positioning ring groove and an inner supporting ring located in the inner positioning ring groove; rotary supporting assemblies are installed between the outer supporting ring and the upper side and the lower side of the outer positioning ring groove and between the inner supporting ring and the upper side and the lower side of the inner positioning ring groove, three sets of rotary supporting assemblies are of ball structures, and the other set of rotary supporting assemblies are of a sliding friction structure. The rotary supporting mechanism has the beneficial effects that the traditional four groups of balls of the rotary supporting mechanism between the base and the movable disc are replaced by the combination of three groups of balls and one friction block, so that the fluency of the rotary motion of the movable disc is ensured, the shaking gap of the movable disc can be eliminated, and the rotation stability of the seat is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, specifically to a turntable rotation support structure. Background Technology

[0002] As the automotive industry continues to develop, the market demands for seats are also increasing. Seats must not only meet passengers' requirements for comfort but also fulfill their functional requirements, including the need for rotating seats, which can meet various communication modes required by customers.

[0003] In the existing technology, the rotation of car seats is mainly achieved by a turntable. The turntable includes a fixedly installed base and a rotating disk rotatably installed on the top of the base. The car seat is fixedly installed on the rotating disk. A gear plate is also provided on the base. A motor is provided on the rotating disk. The output end of the motor is connected to a gear. The gear meshes with the gear plate to drive the motor, thereby realizing the rotation of the rotating disk.

[0004] To facilitate smoother rotation of the car seat, a ball bearing assembly is installed between the moving plate and the base. Some manufacturers use only one set of ball bearings, but the modal characteristics and rigidity of this single set of balls are poor, resulting in noticeable seat wobble. Other manufacturers install ball bearing assemblies on both the upper and lower sides of the inner and outer rings of the moving plate. However, the upper and lower parts of the balls are curved, and the four curved mating surfaces require high precision in individual component mating surfaces, making subsequent matching control and consistency more difficult. Utility Model Content

[0005] In view of this, the present invention provides a turntable rotation support structure, which aims to ensure that the turntable structure is more stable and to prevent the rotating seat from shaking.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A rotary support structure for a turntable includes a base and a movable disk rotatably mounted on the base. The base has an annular mounting cavity with an open upper end. An outer positioning ring groove and an inner positioning ring groove are formed on both sides of the annular mounting cavity. The movable disk is rotatably connected within the annular mounting cavity. The movable disk has an outer support ring located within the outer positioning ring groove and an inner support ring located within the inner positioning ring groove. Rotary support assemblies are installed between the upper and lower sides of the outer support ring and the outer positioning ring groove, and between the upper and lower sides of the inner support ring and the inner positioning ring groove, totaling four sets of rotary support assemblies. Three sets of the rotary support assemblies are ball bearing structures, and the other set is a sliding friction structure.

[0008] By adopting the above structure, the rotating support component between the base and the moving plate is replaced by a combination of three sets of balls and a sliding friction structure. The three sets of balls can ensure the smoothness of the rotating motion of the moving plate, and the sliding friction structure is set between the base and the moving plate to eliminate the wobbling gap of the moving plate and improve the stability of the seat rotation.

[0009] Preferably, the sliding friction structure is a friction block disposed between the inner support ring and the upper side of the inner positioning ring groove. Using this structure, the friction block eliminates the wobble gap of the moving plate, improving the stability of the seat rotation.

[0010] Preferably, the friction block is made of POM material. This structure makes the friction block lightweight and resistant to friction.

[0011] Preferably, the ball bearing structure includes balls and a cage, wherein the cage is annular, and the balls are arranged in a ring array around the outer ring of the cage. This structure allows the moving disc to rotate and be supported on the base.

[0012] Preferably, the base is provided with a first pressure ring and a second pressure ring. The radius of the first pressure ring is larger than the radius of the second pressure ring. The outer ring of the first pressure ring and the inner ring of the second pressure ring are both in close contact with the base. The inner ring of the first pressure ring and the base form the outer positioning ring groove, and the outer ring of the second pressure ring and the base form the inner positioning ring groove. This structure facilitates the assembly of the entire turntable.

[0013] Preferably, the base has a first groove corresponding to the ball bearing, and the top of the moving disc has a second groove corresponding to the ball bearing. This structure facilitates the installation of the ball bearing.

[0014] Preferably, the friction block is an arc-shaped block, and it is arranged in a ring array between the inner support ring and the second pressure ring. This structure facilitates the installation of the friction block.

[0015] Preferably, the inner ring of the second pressure ring is provided with a toothed disc, the top of the moving disc is provided with a motor, and the output end of the motor is provided with a gear, which meshes with the toothed disc. With the above structure, the rotation of the moving disc can be electrically controlled.

[0016] Preferably, the moving plate has a mounting plate on its top, and the motor is mounted on the mounting plate. This structure facilitates stable installation of the motor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The rotary support structure provided by this utility model replaces the traditional four sets of ball bearings between the base and the moving plate with a combination of three sets of ball bearings and a sliding friction structure. The three sets of ball bearings ensure the smoothness of the rotating motion of the moving plate, while the sliding friction structure, located between the base and the moving plate, eliminates the wobbling gap of the moving plate and improves the stability of the seat rotation. Attached Figure Description

[0019] Figure 1 A three-dimensional view of the rotating support structure of the turntable;

[0020] Figure 2 for Figure 1 A three-dimensional sectional view;

[0021] Figure 3 for Figure 1 A partial sectional view;

[0022] Figure 4 for Figure 1 Partial sectional view (rotary support component A is hidden). Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0024] like Figures 1 to 4 As shown, a rotary support structure includes a base 1 and a movable disk 2 rotatably mounted on top of the base 1. The base 1 is fixedly mounted on the bottom of a car or on a seat rail, while the car seat is fixedly mounted above the movable disk 2. The base 1 has an annular mounting cavity 1a with an open upper end. An outer positioning ring groove 1a1 and an inner positioning ring groove 1a2 are formed on both sides of the annular mounting cavity 1a. The movable disk 2 is rotatably mounted inside the annular mounting cavity 1a. The movable disk 2 has an outer support ring 2a located within the outer positioning ring groove 1a1 and an inner support ring 2b located within the outer positioning ring groove 1a2. Rotary support assemblies A are installed between the upper and lower sides of the outer support ring 2a and the outer positioning ring groove 1a1, and between the upper and lower sides of the inner support ring 2b and the inner positioning ring groove 1a2, for a total of four sets of rotary support assemblies A. Three sets of rotary support assemblies A are ball bearing structures, and the other set is a sliding friction structure.

[0025] This design replaces the traditional four-ball structure with a combination of three ball structures and a sliding friction structure in the rotational support structure between the base 1 and the moving plate 2. The three-ball structure ensures the smoothness of the rotational movement of the moving plate 2, while the sliding friction structure, located between the base 1 and the moving plate 2, eliminates the wobbling gap of the moving plate 2 and improves the stability of the seat rotation.

[0026] In this embodiment, the sliding friction structure is an arc-shaped friction block 6, such as... Figure 3 As shown, two extrusion deformation grooves 6a are formed along the length of the top of the friction block 6. The extrusion deformation grooves 6a can adapt to the dimensional error between the inner support ring 2b and the inner positioning ring groove 1a2. Four friction blocks 6 are arranged in a ring between the inner support ring 2b and the inner positioning ring groove 1a2. The four friction blocks 6 are all made of POM material. This design makes the sliding friction structure lighter and has better wear resistance.

[0027] like Figure 3 As shown, the ball structure includes balls 5 and a cage 7. The cage 7 is a ring structure and is fixedly mounted on the base 1 and above the outer support ring 2a. The balls 5 are arranged in a ring array on the outer ring of the cage 7. The ball structure ensures that the rotating disk 2 is supported on the top of the base 1.

[0028] In this embodiment, the base 1 has two first grooves 1b corresponding to the ball 5, and the top of the outer ring of the moving disk 2 has a second groove 2c corresponding to the ball 5. The first grooves 1b and the second grooves 2c facilitate the placement of the ball 5 and also prevent the ball 5 from shifting.

[0029] In addition, in this embodiment, only the two ends of the ball bearing structure between the outer side of the base 1 and the lower side of the outer ring of the moving disk 2 are matched with arc-shaped grooves. The remaining two sets of ball bearing structures are supported on one side in the arc-shaped groove and on the other side on the plane. This design can greatly reduce the requirements for the mating surface of a single part.

[0030] like Figures 2 to 4 As shown, a first pressure ring 3 and a second pressure ring 4 are also fixedly installed on the base 1. The radius of the first pressure ring 3 is larger than the radius of the second pressure ring 4. The outer ring of the first pressure ring 3 and the inner ring of the second pressure ring 4 are tightly attached to the base 1 and fixedly installed with bolts. The inner ring of the first pressure ring 3 and the base 1 form an outer positioning ring groove 1a1, and the outer ring of the second pressure ring 4 and the base 1 form an inner positioning ring groove 1a2. This design facilitates the assembly of the entire turntable rotation support mechanism.

[0031] like Figure 3 As shown, in this embodiment, it is preferable to place the sliding friction structure between the inner support ring 2b and the second pressure ring 4. Alternatively, placing the sliding friction structure in one of the remaining three locations can also ensure that the car seat does not shake.

[0032] like Figure 2As shown, a geared disc 8 is fixedly mounted on the inner ring of the second pressure ring 4. A mounting plate 11 is fixedly mounted on the top of the moving disc 2 by bolts. A motor 9 is fixedly mounted on the mounting plate 11, and a gear 10 is fixedly mounted on the output end of the motor 9. The gear 10 meshes with the geared disc 8. With this design, driving the motor 9 will cause the gear 10 to rotate around the geared disc 8, thereby realizing the electric control of the rotation of the moving disc 2 relative to the base 1. In this embodiment, in addition to electric control of the rotation of the moving disc 2, the rotation of the moving disc 2 can also be manually controlled.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A turntable rotation support structure, comprising a base (1) and a movable disk (2) rotatably disposed on the base (1), characterized in that: The base (1) is provided with an annular mounting cavity (1a) with an open upper end. An outer positioning annular groove (1a1) and an inner positioning annular groove (1a2) are formed on both sides inside the annular mounting cavity (1a). The movable disk (2) is rotatably connected in the annular mounting cavity (1a). The movable disk (2) has an outer support ring (2a) located in the outer positioning ring groove (1a1) and an inner support ring (2b) located in the inner positioning ring groove (1a2). Rotary support assemblies (A) are installed between the upper and lower sides of the outer support ring (2a) and the outer positioning ring groove (1a1), and between the upper and lower sides of the inner support ring (2b) and the inner positioning ring groove (1a2), for a total of four sets of rotary support assemblies (A). Three sets of the rotary support assemblies (A) are ball bearing structures, and the other set of rotary support assemblies (A) is a sliding friction structure.

2. The turntable rotation support structure according to claim 1, characterized in that: The sliding friction structure is a friction block (6) disposed between the inner support ring (2b) and the upper side of the inner positioning ring groove (1a2).

3. The turntable rotation support structure according to claim 2, characterized in that: The friction block (6) is made of POM material.

4. The turntable rotation support structure according to claim 1, characterized in that: The ball structure includes balls (5) and a cage (7). The cage (7) is a ring structure, and the balls (5) are arranged in a ring array on the outer ring of the cage (7).

5. The turntable rotation support structure according to claim 2, characterized in that: The base (1) is provided with a first pressure ring (3) and a second pressure ring (4). The radius of the first pressure ring (3) is larger than the radius of the second pressure ring (4). The outer ring of the first pressure ring (3) and the inner ring of the second pressure ring (4) are both in close contact with the base (1). The inner ring of the first pressure ring (3) and the base (1) form the outer positioning ring groove (1a1), and the outer ring of the second pressure ring (4) and the base (1) form the inner positioning ring groove (1a2).

6. The turntable rotation support structure according to claim 4, characterized in that: The base (1) has a first groove (1b) corresponding to the ball (5), and the top of the moving plate (2) has a second groove (2c) corresponding to the ball (5).

7. The turntable rotation support structure according to claim 5, characterized in that: The friction block (6) is an arc-shaped block, and the ring array is distributed between the inner support ring (2b) and the second pressure ring (4).

8. The turntable rotation support structure according to claim 5, characterized in that: The inner ring of the second pressure ring (4) is provided with a toothed disc (8), the top of the moving disc (2) is provided with a motor (9), the output end of the motor (9) is provided with a gear (10), and the gear (10) meshes with the toothed disc (8).

9. The turntable rotation support structure according to claim 8, characterized in that: The moving plate (2) is provided with a mounting plate (11) on its top, and the motor (9) is mounted on the mounting plate (11).

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