Car seats and electric seat rotation mechanisms

Abstract

The present invention relates to an electric seat rotation mechanism, comprising a base and a turntable rotatably connected to the base, a turntable driving device and a locking device for locking the turntable with the base, wherein the turntable driving device comprises a driving motor, an arc-shaped rack and a driving shaft, wherein the driving motor is fixedly arranged on the turntable, the arc-shaped rack is fixedly arranged on the base, the driving shaft is connected to the output end of the driving motor and extends to the arc-shaped rack, and a driving gear meshing with the arc-shaped rack is arranged on the driving shaft. The present invention effectively simplifies the seat rotation mechanism, realizes the commonality of the electric seat rotation mechanism and the manual seat rotation mechanism, reduces the types of spare parts, and thus effectively reduces the production cost and parts management cost. The present invention also discloses a car seat.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle seat design and production, and in particular to a vehicle seat and an electric seat rotating mechanism. Background Art

[0002] With the development of society, users have more and more demands on the functions of car seats. The ability to rotate car seats is one of the main demands of users for the functionality of car seats. The emergence of rotating seats has greatly improved the interactivity of passengers in the car, making communication and exchanges more convenient and comfortable.

[0003] The current seat rotation mechanism includes an electric seat rotation mechanism and a manual seat rotation mechanism. The current electric seat rotation mechanism includes a turntable, a base and an electric drive device. The electric drive device includes a motor and a recliner. The motor drives the recliner to realize the rotation and locking of the rotation mechanism. The movement of the recliner is eccentric movement, and the eccentric movement of the recliner needs to be converted into concentric movement through a conversion mechanism to realize the rotation of the seat. The entire electric seat rotation mechanism is very complicated; the manual seat rotation mechanism is obtained by removing the electric drive mechanism and only retaining the turntable and the base. Since the locking of the current electric seat rotation mechanism is achieved by the motor and the recliner, an additional locking device needs to be set when producing the manual seat rotation mechanism. The parts commonality between the electric seat rotation mechanism and the manual seat rotation mechanism is poor, which makes the production cost and parts management cost high. Summary of the invention

[0004] One of the purposes of the present invention is to disclose an electric seat rotating mechanism so as to simplify the electric seat rotating mechanism and enhance the parts commonality between the manual seat rotating mechanism and the electric seat rotating mechanism.

[0005] Another object of the present invention is to provide a car seat having the above-mentioned electric seat rotating mechanism.

[0006] To achieve the above-mentioned purpose, the electric seat rotation mechanism provided by the present invention includes a base and a turntable rotatably connected to the base, and also includes a turntable driving device and a locking device for locking the turntable and the base, wherein the turntable driving device includes a driving motor, an arc-shaped rack and a driving shaft, wherein the driving motor is fixedly arranged on the turntable, the arc-shaped rack is fixedly arranged on the base, the driving shaft is connected to the output end of the driving motor and extends to the arc-shaped rack, and the driving shaft is provided with a driving gear meshing with the arc-shaped rack.

[0007] Preferably, a base center hole is opened in the middle of the base, a turntable center hole corresponding to the base center hole is opened in the middle of the turntable, the arc-shaped rack is arranged in contact with the edge of the base center hole, a motor bracket is arranged on the top of the turntable, and the motor bracket extends into the turntable center hole, the drive motor is fixed to one end of the motor bracket located in the turntable center hole, and the drive shaft passes through the turntable center hole and extends to the chassis center hole and then engages with the arc-shaped rack.

[0008] Preferably, it also includes a pressure plate, which includes a support tube passing through the center hole of the turntable and fixedly connected to the base, and an outer flange arranged on the top of the support tube and pressing the turntable and the base tightly.

[0009] Preferably, wear-reducing parts for reducing friction are provided between the outer flange and the turntable and between the turntable and the chassis.

[0010] Preferably, the wear-reducing member is a ball bearing composed of a ball and a cage or a roller bearing composed of a roller and a cage.

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

[0012] Preferably, the locking device comprises:

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

[0014] An unlocking piece hinged to the bottom of the rotating disk, wherein the unlocking piece is provided with a latch pin capable of being inserted into the latch slot;

[0015] A cable is arranged 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 brings the bayonet out of the slot;

[0016] A return spring is connected to the rotating disk at one end and to the unlocking piece at the other end. When the cable is in a relaxed state, the return spring drives the unlocking piece to rotate and causes the latch to engage in the latching slot.

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

[0018] Preferably, it also includes n pairs of anti-detachment hooks, the central angle between two adjacent pairs of the anti-detachment hooks is equal to the central angle between two adjacent brackets, any pair of the anti-detachment hooks includes an upper anti-detachment hook and a lower anti-detachment hook, the first end of the upper anti-detachment hook is fixed on the turntable, and the second end thereof is bent downward and provided with an upper hook body; the first end of the lower anti-detachment hook is fixed on the base, and the second end thereof is bent upward and provided with a lower hook body, and the upper hook body and the lower hook body are interlocked with each other.

[0019] The automobile seat disclosed in the present invention comprises a seat frame and the seat rotating mechanism disclosed in any one of the above items, wherein the turntable is fixedly connected to the seat frame, and the base is used to be fixedly connected to a slide rail or a vehicle body.

[0020] The electric seat rotating mechanism disclosed in the present invention has a base that is usually fixed on a slide rail or a vehicle body, and a turntable that is usually connected to a seat frame. The motor drives the drive shaft to rotate, and then the drive shaft drives the drive gear to rotate synchronously. Since the drive gear is meshed with the arc-shaped rack, and the arc-shaped rack is fixed on the base, the whole formed by the turntable, the motor and the drive shaft will rotate along the arc-shaped rack, thereby realizing the relative rotation between the base and the turntable. When the turntable rotates to the right position, the base and the turntable can be locked by a locking device.

[0021] Since the seat rotation mechanism disclosed in the present invention locks the turntable and the base through a locking device, the locking device is also applicable to the manual seat rotation mechanism. Therefore, when producing the manual seat rotation mechanism, it is only necessary to remove the turntable driving device.

[0022] It can be seen that the electric seat rotation mechanism disclosed in the present invention drives the driving gear to move on the arc-shaped rack through the driving shaft of the motor, abandoning the method of using an angle adjuster in the prior art, thereby eliminating the conversion mechanism and effectively simplifying the seat rotation mechanism; at the same time, the turntable, base and locking mechanism in the seat rotation mechanism disclosed in the present invention realize the commonality of the electric seat rotation mechanism and the manual seat rotation mechanism, reducing the types of spare parts, thereby effectively reducing the production cost and parts management cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall schematic diagram of the electric seat rotation mechanism disclosed in an embodiment of the present invention;

[0024] Figure 2 for Figure 1 An exploded structural diagram of the electric seat rotation mechanism shown in ;

[0025] Figure 3 It is a structural schematic diagram of a locking device in an embodiment of the present invention;

[0026] Figure 4 for Figure 3 The exploded structural diagram of the locking device shown;

[0027] Figure 5 It is a schematic diagram of the exploded structure of the turntable driving device disclosed in the embodiment of the present invention;

[0028] Figure 6 for Figure 1 A cross-sectional schematic diagram of the electric seat rotation mechanism disclosed in .

[0029] Among them, 101 is an upper anti-disconnection hook, 102 is a pressure plate, 103 is a turntable, 104 is an upper connecting bolt, 105 is an upper wear-reducing plate, 106 is a plastic washer, 107 is a reinforcing plate, 108 is a lower wear-reducing plate, 109 is a base, 110 is a lower connecting bolt, 111 is a lower anti-disconnection hook, 200 is a locking device, 201 is a cable, 202 is an unlocking plate, 203 is a reset spring, 204 is a lock bracket, 205 is a bayonet, 206 is a screw, 207 is a gasket, 208 is a nut, 300 is a turntable driving device, 301 is a fixing bolt, 302 is a driving motor, 303 is a driving shaft, 304 is a driving gear, 305 is a motor bracket, 306 is a rivet, and 307 is an arc rack. DETAILED DESCRIPTION

[0030] One of the cores of the present invention is to provide an electric seat rotating mechanism so as to simplify the electric seat rotating mechanism and enhance the parts commonality between the manual seat rotating mechanism and the electric seat rotating mechanism.

[0031] Another core of the present invention is to provide a car seat having the above-mentioned electric seat rotating mechanism.

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Please refer to Figure 1 and Figure 2 The electric seat rotation mechanism disclosed in this embodiment includes a base 109, a turntable 103, a turntable driving device 300 and a locking device 200. The turntable 103 is rotatably connected to the base 109. The turntable driving device 300 is used to drive the turntable 103 and the base 109 to rotate relative to each other. The locking device 200 is used to lock the turntable 103 and the base 109 to ensure that the positions of the two are relatively fixed. Usually, the base 109 is fixedly arranged, and the turntable 103 is connected to the seat frame of the seat. When the electric seat rotation mechanism is applied to a car seat, the base 109 is fixed on a slide rail or a car body, and the turntable 103 is fixedly connected to the seat frame.

[0034] Please refer to Figure 5 The motor driving device in this embodiment includes a driving motor 302, an arc-shaped rack 307 and a driving shaft 303, wherein the driving motor 302 is fixedly arranged on the turntable 103, the arc-shaped rack 307 is fixedly arranged on the base 109, the driving shaft 303 is connected to the output end of the driving motor 302 and extends to the arc-shaped rack 307, and a driving gear 304 meshing with the arc-shaped rack 307 is arranged on the driving shaft 303.

[0035] The electric seat rotating mechanism disclosed in the above embodiment drives the driving shaft 303 to rotate by the motor, and then the driving shaft 303 drives the driving gear 304 to rotate synchronously. Since the driving gear 304 is meshed with the arc-shaped rack 307, and the arc-shaped rack 307 is fixed on the base 109, the whole formed by the turntable 103, the motor and the driving shaft 303 will rotate along the arc-shaped rack 307, thereby realizing the relative rotation between the base 109 and the turntable 103. When the turntable 103 rotates to the right position, the base 109 and the turntable 103 can be locked by the locking device 200.

[0036] Since the seat rotation mechanism disclosed in the above embodiment locks the turntable 103 and the base 109 through the locking device 200, the locking device 200 is also applicable to the manual seat rotation mechanism. Therefore, when producing the manual seat rotation mechanism, it is only necessary to remove the turntable driving device 300.

[0037] It can be seen that the electric seat rotation mechanism disclosed in the above embodiment drives the drive gear 304 to move on the arc rack 307 through the drive shaft 303 driven by the motor, thereby abandoning the method of using an angle adjuster in the prior art, thereby eliminating the conversion mechanism and effectively simplifying the seat rotation mechanism; at the same time, the turntable 103, the base 109 and the locking mechanism in the seat rotation mechanism realize the commonality of the electric seat rotation mechanism and the manual seat rotation mechanism, reducing the types of spare parts, thereby effectively reducing the production cost and parts management cost.

[0038] Of course, a speed change mechanism may be provided between the drive motor 302 and the drive shaft 303 as required.

[0039] Those skilled in the art can understand that the arc-shaped rack 307 can be arranged near the edge of the chassis, and correspondingly, the drive shaft 303 should also extend downward from the edge of the turntable 103 to the arc-shaped rack 307. Although this method can realize the rotation of the turntable 103, the overall layout is not compact enough, and the turntable drive device 300 occupies too much space. Therefore, in one embodiment:

[0040] A base center hole is opened in the middle of the base 109, a turntable center hole corresponding to the base center hole is opened in the middle of the turntable 103, an arc-shaped rack 307 is arranged in contact with the edge of the base center hole, a motor bracket 305 is arranged on the top of the turntable 103, and the motor bracket 305 extends into the turntable center hole, the drive motor 302 is fixed to one end of the motor bracket 305 located in the turntable center hole, and the drive shaft 303 passes through the turntable center hole and extends to the chassis center hole and then engages with the arc-shaped rack 307.

[0041] Combination Figure 1 and Figure 5 It is understood that the motor bracket 305 is arranged on the turntable 103, the drive motor 302 is fixedly arranged on the motor bracket 305 by the fixing bolt 301, the drive motor 302 after installation is embedded in the center hole of the turntable, the arc-shaped rack 307 is fixedly connected to the base 109 by the rivet 306, the side of the arc-shaped rack 307 with teeth is located at the edge of the center hole of the base, the drive shaft 303 together with the drive gear 304 passes through the center hole of the turntable and extends to the center hole of the chassis and then meshes with the arc-shaped rack 307. Of course, the arc-shaped rack 307 can also be fixedly connected to the chassis by welding.

[0042] In a preferred embodiment, the turntable 103 and the base 109 are disks of substantially equal size, and the turntable 103 and the base 109 are concentrically assembled together. In order to improve the strength of the turntable 103 itself, the seat rotation mechanism disclosed in this embodiment also includes a reinforcement plate 107, please refer to Figure 2 and Figure 6 A reinforcing plate center hole is provided in the middle of the reinforcing plate 107, the outer edge of the turntable 103 has an outer edge folded edge bent toward the base 109, the edge of the turntable center hole is provided with a center hole folded edge bent toward the base 109, and the bottom of the turntable 103 forms an annular U-shaped groove toward the base 109. The reinforcing plate 107 is buckled on the bottom of the turntable 103 and forms a closed cavity inside the turntable 103.

[0043] In addition, the electric seat rotation mechanism further includes a pressure plate 102, which includes a support tube and an outer flange. Figure 2 and Figure 6As shown in the figure, the support cylinder is connected to the base 109 after passing through the center hole of the turntable. The top of the support cylinder is provided with an outer flange, which is used to press the turntable 103 and the base 109 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. At this point, the base 109 and the pressure plate 102 form a whole, which is equivalent to the stator. The turntable 103 installed with the reinforcement plate 107 (it is also possible not to set the reinforcement plate 107) is equivalent to the rotor matched with the stator. In the vertical direction, the rotor and the stator have two contact positions during the rotation process, namely the contact position between the outer flange and the turntable 103, and the contact position between the turntable 103 and the chassis (when the reinforcement plate 107 is set, the reinforcement plate 107 is in contact with the chassis). In order to reduce the friction, it is necessary to set wear-reducing parts at these two positions. The wear-reducing parts can be formed by steel balls and retaining frames to form ball bearings, or by rollers and retaining frames to form roller bearings, or they can be plastics with lubricating function such as POM (Chinese name is polyoxymethylene) or metal sheets with a lubricating coating (such as polytetrafluoroethylene) on the surface. In this embodiment, a metal sheet with a lubricating coating on the surface is used as the wear-reducing part, such as Figure 2 As shown in the figure, the metal sheet disposed at the contact position between the outer flange and the turntable 103 is called the upper wear-reducing sheet 105, and the metal sheet disposed at the contact position between the turntable 103 and the chassis is called the lower wear-reducing sheet 108. In the circumferential direction, the stator and the rotor also have contact positions, namely, the center hole of the turntable and the support cylinder of the pressure plate 102. In order to reduce wear, a plastic washer 106 for reducing friction is also installed between the support cylinder and the turntable 103, so as to make the rotational motion more stable and smooth.

[0044] 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 reset 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 card slot shape in this embodiment can be a U-shaped slot. The unlocking piece 202 is hinged at the bottom of the rotating disk 103, and the unlocking piece 202 is provided with a card pin 205 that can be inserted into the card slot. 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 brings the pin 205 out of the 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 get into the slot, and the turntable 103 and the base 109 are locked.

[0045] For more details, please refer to Figure 4The lock bracket 204 is fixedly arranged on the chassis, the gasket 207 is fixedly connected to the bottom of the chassis, 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.

[0046] The lock bracket 204 specifically includes n lock brackets 204, which are evenly distributed on the same circumference, wherein n is a positive integer not less than 2. It can be understood by those skilled in the art 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°.

[0047] In order to further optimize the scheme and prevent the turntable 103 from falling off the base 109, an anti-detachment hook is also provided in this embodiment. The anti-detachment hooks are arranged in pairs. Any pair of anti-detachment hooks includes an upper anti-detachment hook 101 and a lower anti-detachment hook 111. The first end of the upper anti-detachment hook 101 is fixed on the turntable 103, and the second end is bent downward and provided with an upper hook body; the first end of the lower anti-detachment hook 111 is fixed on the base 109, and the second end is bent upward and provided with a lower hook body. The upper hook body and the lower hook body are interlocked with each other to allow the turntable 103 to rotate in the circumferential direction, but the turntable 103 is not allowed to move axially. It is not difficult for those skilled in the art to understand that the number of anti-detachment hooks should be equal to the number of gears of the electric seat rotation mechanism. In the case of providing n lock brackets 204, the electric seat rotation mechanism should include n pairs of anti-detachment hooks, and the central angle between two adjacent pairs of the anti-detachment hooks is equal to the central angle between two adjacent brackets.

[0048] In addition, the present invention also discloses a car seat, including a seat frame and the seat rotation mechanism disclosed in any of the above embodiments, and the turntable 103 is fixedly connected to the seat frame via an upper connecting bolt 104, and the base 109 is fixedly connected to the slide rail or the body via a lower connecting bolt 110.

[0049] Since the above-mentioned electric seat rotating mechanism is adopted, the car seat has the corresponding technical advantages of the above-mentioned electric seat rotating mechanism, which will not be described in detail in this article.

[0050] The above is a detailed introduction to the automobile seat and electric seat rotation mechanism provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An electric seat rotation mechanism, comprising a base (109) and a turntable (103) rotatably connected to the base (109), characterized in that: It also comprises a turntable drive device (300) and a locking device (200) for locking the turntable (103) and the base (109), wherein the turntable drive device (300) comprises a drive motor (302), an arc-shaped rack (307) and a drive shaft (303), wherein the drive motor (302) is fixedly arranged on the turntable (103), the arc-shaped rack (307) is fixedly arranged on the base (109), the drive shaft (303) is connected to the output end of the drive motor (302) and extends to the arc-shaped rack (307), and a drive gear (304) meshing with the arc-shaped rack (307) is arranged on the drive shaft (303); The seat rotation mechanism further comprises a reinforcement plate (107), a reinforcement plate center hole is arranged in the middle of the reinforcement plate (107), a base center hole is opened in the middle of the base (109), the outer edge of the turntable (103) has an outer edge folded edge bent toward the base (109), a turntable center hole corresponding to the base center hole is opened in the middle of the turntable (103), the edge of the turntable center hole is provided with a center hole folded edge bent toward the base (109), the bottom of the turntable (103) forms an annular U-shaped groove facing the base (109), and the reinforcement plate (107) is buckled on the bottom of the turntable (103) to form a closed cavity inside the turntable (103).

2. The electric seat rotation mechanism according to claim 1, characterized in that: The arc-shaped rack (307) is arranged in contact with the edge of the center hole of the base, a motor bracket (305) is arranged on the top of the turntable (103), and the motor bracket (305) extends into the center hole of the turntable, the drive motor (302) is fixed to one end of the motor bracket (305) located in the center hole of the turntable, and the drive shaft (303) passes through the center hole of the turntable and extends to the center hole of the base to engage with the arc-shaped rack (307).

3. The electric seat rotation mechanism according to claim 2, characterized in that: It also includes a pressure plate (102), the pressure plate (102) including a support tube passing through the center hole of the turntable and fixedly connected to the base (109), and an outer flange arranged on the top of the support tube and pressing the turntable (103) and the base (109) together.

4. The electric seat rotation mechanism according to claim 3, characterized in that: Wear-reducing parts for reducing friction are provided between the outer flange and the rotating disk (103) and between the rotating disk (103) and the base.

5. The electric seat rotation mechanism according to claim 4, characterized in that: The wear-reducing member is a ball bearing composed of a ball and a retaining frame or a roller bearing composed of a roller and a retaining frame.

6. The electric seat rotation mechanism according to claim 3, characterized in that: A plastic gasket (106) for reducing friction is also installed between the support cylinder and the rotating disk (103).

7. The electric seat rotation mechanism according to any one of claims 1 to 6, characterized in that: The locking device (200) comprises: A lock bracket (204) fixedly arranged on the base (109), wherein a card slot is provided on the lock bracket (204); An unlocking piece (202) hinged to the bottom of the rotating disk (103), the unlocking piece (202) being provided with a latching pin (205) capable of being latched into the latching slot; A pull cable (201) is arranged on the unlocking piece (202), the pull cable (201) is a manual pull cable or an electric pull cable, and when the pull cable (201) is tightened, the unlocking piece (202) rotates and brings the latch (205) out of the latch slot; A return spring (203) having one end connected to the rotating disk (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 causes the latch (205) to engage in the latching slot.

8. The electric seat rotation mechanism according to claim 7, characterized in that: The lock brackets (204) include n lock brackets (204), and the n lock brackets (204) are evenly distributed on the same circumference, wherein n is a positive integer not less than 2.

9. The electric seat rotation mechanism according to claim 8, characterized in that: It also includes n pairs of anti-detachment hooks, the central angle between two adjacent pairs of the anti-detachment hooks is equal to the central angle between two adjacent lock brackets (204), and any pair of the anti-detachment hooks includes an upper anti-detachment hook and a lower anti-detachment hook, the first end of the upper anti-detachment hook is fixed to the rotating disk (103), and the second end thereof is bent downward and provided with an upper hook body; the first end of the lower anti-detachment hook is fixed to the base (109), and the second end thereof is bent upward and provided with a lower hook body, and the upper hook body and the lower hook body are interlocked.

10. A car seat, comprising a seat frame and the electric seat rotation mechanism according to any one of claims 1 to 9, wherein the turntable (103) is fixedly connected to the seat frame, and the base (109) is used to be fixedly connected to a slide rail or a vehicle body.

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