Automobile seat and seat rotation mechanism

Abstract

The present invention relates to a seat rotation mechanism, which includes a base and a turntable rotatably connected to the base. A base center hole is provided in the middle of the base, and a turntable center hole corresponding to the base center hole is provided in the middle of the turntable. The outer edge of the turntable has an outer edge flange bent towards the base, and the edge of the turntable center hole is provided with a center hole flange bent towards the base. A ring-shaped U-shaped groove facing the base is formed at the bottom of the turntable. A reinforcing plate is also buckled at the bottom of the turntable to form a closed cavity inside the turntable, and a reinforcing plate center hole corresponding to the turntable center hole is provided in the middle of the reinforcing plate. Compared with a flat turntable, the strength of the turntable with a closed cavity inside is improved; compared with the solution of increasing the strength by thickening the turntable, at the same strength, the thickness of the turntable and the reinforcing plate in the present invention can be made smaller, and the weight of the entire seat rotation mechanism is smaller, which is beneficial to reducing the weight of the whole vehicle. The present invention also relates to an automotive seat.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seat design and production, and particularly relates to an automotive seat and a seat rotation mechanism. Background Art

[0002] With the development of society, users have more and more requirements for the functions of automotive seats. An automotive seat that can rotate is one of the main demands of users for the functionality of automotive seats. The appearance of rotating seats has greatly improved the interactivity of passengers in the vehicle, making communication and interaction more convenient and comfortable.

[0003] Currently, the seat rotation mechanisms on the market are usually composed of a base and a turntable. Between the base and the turntable are balls fixed by a cage. Since the current turntable is basically a flat disc-shaped structure, when it bears a large load and undergoes bumpy creep, it is very easy to have structural deformation. In response to this situation, the currently common solution is to increase the thickness of the parts. However, on the one hand, this increases the production cost of the seat rotation mechanism, and on the other hand, it also goes against the current production requirement of reducing the weight of the whole vehicle to save energy consumption. Summary of the Invention

[0004] One of the purposes of the present invention is to disclose a seat rotation mechanism, so as to be able to enhance the strength of the turntable while enabling the seat rotation mechanism to have a lower weight and a lower production cost.

[0005] Another purpose of the present invention is also to provide an automotive seat having the above-mentioned seat rotation mechanism.

[0006] To achieve the above object, the seat rotation mechanism provided by the present invention includes a base and a turntable rotatably connected to the base. A base center hole is provided in the middle of the base, a turntable center hole corresponding to the base center hole is provided in the middle of the turntable. The outer edge of the turntable has an outer edge flange bent towards the base, the edge of the turntable center hole is provided with a center hole flange bent towards the base. A ring-shaped U-shaped groove is formed at the bottom of the turntable towards the base, and a reinforcing plate is also buckled at the bottom of the turntable to form a closed cavity inside the turntable, and a reinforcing plate center hole corresponding to the turntable center hole is provided in the middle of the reinforcing plate.

[0007] Preferably, the reinforcing plate includes two supporting edges respectively in contact with the outer edge flange and the center hole flange, and a ring-shaped convex platform located between the two supporting edges and protruding towards the cavity of the U-shaped groove.

[0008] Preferably, it further includes a pressure plate. The pressure plate includes a support cylinder passing through the central hole of the turntable and the central hole of the reinforcing plate and fixedly connected to the base, and an outward-turned edge provided at the top of the support cylinder for pressing the turntable and the base tightly.

[0009] Preferably, wear-reducing members for reducing friction are provided between the outward-turned edge and the turntable, and between the reinforcing plate and the base.

[0010] Preferably, the wear-reducing member is a wear-reducing sheet, and the wear-reducing sheet includes a metal substrate and a lubricating coating provided on the metal substrate.

[0011] Preferably, a plastic washer for reducing friction is further installed between the support cylinder and the turntable.

[0012] Preferably, it further includes a locking device for locking the turntable and the base. The locking device includes:

[0013] A lock bracket fixedly provided on the base, and a card slot is provided on the lock bracket;

[0014] An unlocking piece hinged to the bottom of the turntable, and a pin capable of being inserted into the card slot is provided on the unlocking piece;

[0015] A cable provided on the unlocking piece, the cable is a manual cable or an electric cable, and when the cable is tightened, the unlocking piece rotates and takes the pin out of the card slot;

[0016] A return spring having one end connected to the turntable and the other end connected to the unlocking piece. When the cable is in a relaxed state, the return spring drives the unlocking piece to rotate and makes the pin snap into the card slot.

[0017] Preferably, there are n lock brackets, and the n lock brackets are evenly distributed on the same circumference, where n is a positive integer not less than 2.

[0018] Preferably, it further includes n pairs of anti-disengagement hooks. The central angle between adjacent pairs of anti-disengagement hooks is equal to the central angle between adjacent two brackets. Any pair of anti-disengagement hooks includes an upper anti-disengagement hook and a lower anti-disengagement hook. The first end of the upper anti-disengagement hook is fixed to the turntable, its second end is bent downward and provided with an upper hook body; the first end of the lower anti-disengagement hook is fixed to the base, its second end is bent upward and provided with a lower hook body, and the upper hook body and the lower hook body are mutually engaged.

[0019] The vehicle seat disclosed in the present invention includes a seat frame and the seat rotation mechanism disclosed in any one of the above, and the turntable is fixedly connected to the seat frame, and the base is used for being fixedly connected to a slide rail or a vehicle body.

[0020] As can be seen from the above technical solutions, in the seat rotation mechanism disclosed in the present invention, it includes a base and a turntable rotatably connected to the base. A base center hole is provided at the center of the base, and a turntable center hole is provided in the middle of the turntable. Moreover, the turntable is not a planar structure. The outer edge of the turntable has an outer edge fold that bends towards the base, and the edge of the turntable center hole is provided with a center hole fold that bends towards the base. The outer edge fold and the center hole fold cause a ring-shaped U-shaped groove to be formed at the bottom of the turntable facing the base. A reinforcing plate is also buckled on the bottom of the turntable, and the reinforcing plate closes the opening of the U-shaped groove, so that a closed cavity is formed inside the turntable.

[0021] Compared with a planar turntable, the strength of the turntable with a closed cavity inside is improved; compared with the solution of increasing the strength by thickening the turntable, under the same strength, the thickness of the turntable and the reinforcing plate in the present invention can be made smaller, and the weight of the entire seat rotation mechanism is smaller, which is beneficial to reducing the weight of the whole vehicle and energy consumption. Brief Description of the Drawings

[0022] Figure 1 is the overall schematic diagram of the seat rotation mechanism disclosed in the embodiment of the present invention;

[0023] Figure 2 is Figure 1 the exploded structure schematic diagram of the seat rotation mechanism shown in

[0024] Figure 3 is the structure schematic diagram of the locking device in the embodiment of the present invention;

[0025] Figure 4 is Figure 3 the exploded structure schematic diagram of the locking device shown in

[0026] Figure 5 is Figure 1 the cross-sectional schematic diagram of the seat rotation mechanism disclosed in

[0027] Among them, 101 is the upper anti-disengagement hook, 102 is the pressure plate, 103 is the turntable, 104 is the upper connecting bolt, 105 is the upper wear-reducing plate, 106 is the plastic washer, 107 is the reinforcing plate, 108 is the lower wear-reducing plate, 109 is the base, 110 is the lower connecting bolt, 111 is the lower anti-disengagement hook, 200 is the locking device, 201 is the cable, 202 is the unlocking piece, 203 is the return spring, 204 is the lock bracket, 205 is the pin, 206 is the screw, 207 is the washer, 208 is the nut. Detailed Embodiment

[0028] One of the cores of the present invention is to provide a seat rotation mechanism, so as to be able to enhance the strength of the turntable while enabling the seat rotation mechanism to have a lower weight and lower production cost.

[0029] Another core of the present invention also lies in providing an automotive seat having the above-mentioned seat rotation mechanism.

[0030] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Please refer to Figure 1 and Figure 2 For the seat rotation mechanism disclosed in the present invention, it includes a base 109 and a turntable 103 rotatably connected to the base 109. A base center hole is provided in the middle of the base 109, and a turntable center hole corresponding to the base center hole is provided in the middle of the turntable 103. The outer edge of the turntable 103 has an outer edge fold bent towards the base 109, and the edge of the turntable center hole is provided with a center hole fold bent towards the base 109. The outer edge fold and the center hole fold cause a ring-shaped U-shaped groove to be formed at the bottom of the turntable 103 facing the base 109. In addition, a reinforcing plate 107 that closes the inside of the turntable 103 is buckled on the bottom of the turntable 103, and a reinforcing plate center hole corresponding to the turntable center hole is provided in the middle of the reinforcing plate 107.

[0032] In the seat rotation mechanism disclosed in the above embodiment, it includes a base 109 and a turntable 103 rotatably connected to the base 109. A base center hole is provided in the middle of the base, and a turntable center hole is provided in the middle of the turntable 103. And the turntable 103 is not a planar structure. The outer edge of the turntable 103 has an outer edge fold bent towards the base 109, and the edge of the turntable center hole is provided with a center hole fold bent towards the base 109. The outer edge fold and the center hole fold cause a ring-shaped U-shaped groove to be formed at the bottom of the turntable 103 facing the base 109. A reinforcing plate 107 is also buckled on the bottom of the turntable 103, and the reinforcing plate 107 closes the opening of the U-shaped groove, so that a closed cavity is formed inside the turntable 103.

[0033] Compared with a planar turntable, the strength of the turntable 103 with a closed cavity inside is improved; compared with the solution of increasing the strength by thickening the turntable, at the same strength, the thickness of the turntable 103 and the reinforcing plate 107 in the present invention can be made smaller, and the weight of the entire seat rotation mechanism is smaller, which is beneficial to reducing the weight of the whole vehicle and energy consumption.

[0034] Please refer to Figure 2 , the reinforcing plate 107 includes two supporting edges respectively in contact with the outer edge fold and the center hole fold and a ring-shaped convex platform located between the two supporting edges. The ring-shaped convex platform protrudes towards the cavity of the U-shaped groove. This setting form makes the degree of fit between the reinforcing plate 107 and the bottom shape of the turntable 103 higher.

[0035] In addition, the electric seat rotation mechanism further includes a pressure plate 102, which includes a support cylinder and an outwardly turned edge. As shown in Figure 2 and Figure 5 , the support cylinder passes through the central hole of the turntable and is connected to the base 109. An outwardly turned edge is provided at the top of the support cylinder. The outwardly turned edge is used to press the turntable 103 and the base 109 tightly in the axial direction. At the same time, the pressure plate 102 also has the function of preventing the turntable 103 from falling off the base 109. Thus, the base 109 and the pressure plate 102 form an integral body, which is equivalent to a stator, and the turntable 103 installed with the reinforcing plate 107 is equivalent to a rotor that cooperates with the stator. In the vertical direction, there are two contact positions between the rotor and the stator during the rotation process, namely the contact position between the outwardly turned edge and the turntable 103, and the contact position between the reinforcing plate 107 and the base. In order to reduce the friction force, anti-friction parts need to be provided at these two positions. The anti-friction parts can be formed by steel balls and a cage to form a ball bearing, or formed by rollers and a cage to form a roller bearing, or can be plastics with lubricating functions such as POM (the Chinese name is polyoxymethylene) or metal sheets with a lubricating coating (such as polytetrafluoroethylene) on the surface. In this embodiment, a metal substrate with a lubricating coating on the surface is used as the anti-friction part. As shown in Figure 2 , the metal sheet provided at the contact position between the outwardly turned edge and the turntable 103 is called the upper anti-friction sheet 105, and the metal sheet provided at the contact position between the reinforcing plate 107 and the base is called the lower anti-friction sheet 108. In the circumferential direction, there is also a contact position between the stator and the rotor, that is, the central hole of the turntable and the support cylinder of the pressure plate 102. In order to reduce wear, a plastic washer 106 for reducing the friction force is also installed between the support cylinder and the turntable 103 to make the rotational movement smoother and more stable.

[0036] Please refer to Figures 2 to 4 . The locking device 200 disclosed in this embodiment includes a lock bracket 204, an unlocking piece 202, a cable 201, and a return spring 203. The lock bracket 204 is fixedly arranged on the base 109, and a card slot is provided on the lock bracket 204. The shape of the card slot is designed according to needs. The shape of the card slot in this embodiment can be a U-shaped slot. The unlocking piece 202 is hinged at the bottom of the turntable 103, and a pin 205 that can be inserted into the card slot is provided on the unlocking piece 202. The cable 201 is connected to the unlocking piece 202. The cable 201 can be a manual cable or an electric cable driven by a motor. When the cable 201 is tightened, the unlocking piece 202 rotates and takes the pin 205 out of the card slot, and the turntable 103 and the base 109 are unlocked; one end of the return spring 203 is connected to the turntable 103, and the other end is connected to the unlocking piece 202. When the cable 201 is in a relaxed state, the return spring 203 drives the unlocking piece 202 to rotate and makes the pin 205 snap into the card slot, and the turntable 103 and the base 109 are locked.

[0037] More specifically, please refer to Figure 4 , the lock bracket 204 is fixedly arranged on the base, the gasket 207 is fixedly connected to the bottom of the base, the screw 206 passes through the through hole on the gasket 207, and cooperates with the nut 208 to realize the hinge connection between the unlocking piece 202 and the bottom of the turntable 103.

[0038] Specifically, there are n lock brackets 204, and the n lock brackets 204 are evenly distributed on the same circumference. Among them, n is a positive integer not less than 2. Those skilled in the art can understand that the number of lock brackets 204 determines the number of gears of the electric seat rotation mechanism. For example, if two lock brackets 204 are provided, the turntable 103 has two gears of 0° and 180°.

[0039] To further optimize the solution and prevent the turntable 103 from falling off the base 109, anti-disengagement hooks are also provided in this embodiment. The anti-disengagement hooks are arranged in pairs. Any pair of anti-disengagement hooks includes an upper anti-disengagement hook 101 and a lower anti-disengagement hook 111. The first end of the upper anti-disengagement hook 101 is fixed on the turntable 103, the second end is bent downward and provided with an upper hook body; the first end of the lower anti-disengagement hook 111 is fixed on the base 109, the second end is bent upward and provided with a lower hook body, and the upper hook body and the lower hook body are mutually engaged to allow the turntable 103 to rotate in the circumferential direction, but not allow the turntable 103 to move axially. It is not difficult for those skilled in the art to understand that the number of anti-disengagement hooks should be equal to the number of gears of the electric seat rotation mechanism. In the case of setting n lock brackets 204, the electric seat rotation mechanism should include n pairs of anti-disengagement hooks, and the central angle between adjacent pairs of the anti-disengagement hooks is equal to the central angle between adjacent two of the brackets.

[0040] In addition, the present invention also discloses an automobile seat, including a seat frame and the seat rotation mechanism disclosed in any one of the above embodiments, and the turntable 103 is fixedly connected to the seat frame through an upper connecting bolt 104, and the base 109 is used to be fixedly connected to a slide rail or a vehicle body through a lower connecting bolt 110.

[0041] Due to the adoption of the above seat rotation mechanism, the automobile seat has the corresponding technical advantages of the above electric seat rotation mechanism, which will not be elaborated herein.

[0042] The above has introduced the automobile seat and the seat rotation mechanism provided by the present invention in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A seat rotation mechanism, comprising a base (109) and a turntable (103) rotatably connected to the base (109), characterized in that, A base center hole is formed in the middle of the base (109), a turntable center hole corresponding to the base center hole is formed in the middle of the turntable (103), an outer edge folding edge bent towards the base (109) is provided at the outer edge of the turntable (103), a center hole folding edge bent towards the base (109) is provided at the edge of the turntable center hole, a circular U-shaped groove facing the base (109) is formed at the bottom of the turntable (103), a reinforcing plate (107) for forming a closed cavity inside the turntable (103) is buckled at the bottom of the turntable (103), and a reinforcing plate center hole corresponding to the turntable center hole is provided in the middle of the reinforcing plate (107); The reinforcing plate (107) includes two supporting edges respectively in contact with the outer edge folding edge and the center hole folding edge, and a circular boss located between the two supporting edges and protruding towards the cavity of the U-shaped groove; It further includes a pressing plate (102), the pressing plate (102) includes a supporting cylinder passing through the turntable center hole and the reinforcing plate center hole and fixedly connected to the base (109), and an outward turning edge provided at the top of the supporting cylinder for pressing the turntable (103) and the base (109) tightly; 2. The seat rotation mechanism according to claim 1, characterized in that, Wear-reducing members for reducing friction are provided between the outward turning edge and the turntable (103) and between the reinforcing plate (107) and the base (109); 3. The seat rotation mechanism according to claim 2, characterized in that, The wear-reducing member is a wear-reducing sheet, and the wear-reducing sheet includes a metal substrate and a lubricating coating provided on the metal substrate; 4. The seat rotation mechanism according to claim 1, characterized in that, A plastic washer (106) for reducing friction is further installed between the supporting cylinder and the turntable (103); 5. The seat rotation mechanism according to any one of claims 1-4, characterized in that It further includes a locking device (200) for locking the turntable (103) and the base (109), and the locking device (200) includes: A lock bracket (204) fixedly provided on the base (109), and a card slot is formed on the lock bracket (204); An unlocking piece (202) hinged to the bottom of the turntable (103), and a pin (205) capable of being inserted into the card slot is provided on the unlocking piece (202); A cable (201) provided on the unlocking piece (202), the cable (201) is a manual cable or an electric cable, and when the cable (201) is tightened, the unlocking piece (202) rotates and takes the pin (205) out of the card slot; A return spring (203) with one end connected to the turntable (103) and the other end connected to the unlocking piece (202), when the cable (201) is in a relaxed state, the return spring (203) drives the unlocking piece (202) to rotate and makes the pin (205) inserted into the card slot; 6. The seat rotation mechanism according to claim 5, wherein, There are n lock brackets (204), and the n lock brackets (204) are evenly distributed on the same circumference, where n is a positive integer not less than 2.

7. The seat rotation mechanism according to claim 6, characterized in that, It further includes n pairs of anti-disengagement hooks. The central angle between adjacent pairs of the anti-disengagement hooks is equal to the central angle between adjacent two of the brackets. Any pair of the anti-disengagement hooks includes an upper anti-disengagement hook and a lower anti-disengagement hook. The first end of the upper anti-disengagement hook is fixed on the turntable (103), and its second end is bent downward and provided with an upper hook body; the first end of the lower anti-disengagement hook is fixed on the base (109), and its second end is bent upward and provided with a lower hook body, and the upper hook body and the lower hook body are fitted with each other.

8. An automobile seat, comprising a seat frame and the seat rotation mechanism according to any one of claims 1-7, and the turntable (103) is fixedly connected with the seat frame, and the base (109) is used for being fixedly connected with a slide rail or a vehicle body.

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