Adjusting mechanism of zero-gravity seat and zero-gravity seat

Abstract

The utility model relates to the technical field of automobile seats, and discloses an adjusting mechanism of a zero-gravity seat and the zero-gravity seat, and the adjusting mechanism of the zero-gravity seat comprises a base which is provided with a sliding groove and a rack; the seat cushion is movably arranged on the base; the telescopic driving part is arranged on the base and provided with a telescopic rod, the telescopic end of the telescopic rod is connected with the lower end of the zero-gravity connecting rod, the telescopic end is provided with a gear, and the gear is meshed with the rack; when the seat is switched to the zero-gravity mode, the telescopic driving piece drives the lower end of the zero-gravity connecting rod to slide along the sliding groove, and the gear rotates along the rack in an engaged mode. The zero-gravity adjusting mechanism has the advantages that during zero-gravity adjustment, the gear is matched with the rack, so that the zero-gravity adjusting mechanism has a locking function, the strength of the seat is higher during collision, the safety performance of the seat can be effectively improved, and the zero-gravity adjusting mechanism is simple in overall structure, high in strength and good in movement synchronism.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to an adjustment mechanism for a zero-gravity seat and a zero-gravity seat. Background Technology

[0002] More and more car models are equipped with zero-gravity seats to improve passenger comfort. Normally, when the car seat is in a sitting position, you can switch the car seat to zero-gravity mode by raising the front of the seat cushion and rotating it about 20 degrees.

[0003] In existing zero-gravity seats, the adjustment mechanisms are mostly complex, with numerous hinge points and large gaps, affecting seat adjustment. To achieve zero-gravity adjustment, a common existing structure involves a groove on the base, with the lower end of a zero-gravity linkage slidably positioned within the groove. A single-sided drive component propels the lower end of the zero-gravity linkage along the groove, raising the front of the seat cushion to switch the seat to zero-gravity mode. However, the lower end of the zero-gravity linkage, when engaging with the groove, lacks a locking function, resulting in poor locking strength and poor synchronicity of movement on both sides of the seat cushion. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose an adjustment mechanism for a zero-gravity seat with locking function, high strength and good synchronization, and a zero-gravity seat.

[0005] The technical solution adopted by this utility model to solve its technical problem is to propose an adjustment mechanism for a zero-gravity seat, comprising:

[0006] A base, wherein a groove is provided on the base and a rack is provided along the length of the groove;

[0007] The seat cushion is movably mounted on the base;

[0008] The device includes a telescopic drive component and a zero-gravity linkage. The upper end of the zero-gravity linkage is rotatably connected to the front end of the seat cushion, and the lower end is slidably disposed in the slide groove. The telescopic drive component is disposed on the base and has a telescopic rod. The telescopic end of the telescopic rod is connected to the lower end of the zero-gravity linkage, and the telescopic end is equipped with a gear that meshes with the rack.

[0009] When the seat switches to zero gravity mode, the telescopic drive drives the lower end of the zero gravity linkage to slide along the slide groove, and the gear rotates along the rack.

[0010] Furthermore, a sliding groove is provided on each side of the base, and a rack is provided in each of the two sliding grooves along their respective length directions;

[0011] The telescopic rod is equipped with a synchronizing rod at its telescopic end, and a gear is provided at each end of the synchronizing rod, with the two gears meshing with the two racks respectively.

[0012] Furthermore, the telescopic end of the telescopic rod has a bushing, which is sleeved on the synchronizing rod and rotatably connected to the synchronizing rod.

[0013] Furthermore, the synchronizing rod is provided with two limiting protrusions spaced apart along its axial direction, and the bushing is restricted between the two limiting protrusions.

[0014] Furthermore, a zero-gravity connecting rod is provided on each side of the seat cushion;

[0015] The two gears are rotatably connected to both ends of the synchronizing rod, and the lower ends of the two zero-gravity connecting rods are connected to the two gears respectively.

[0016] Furthermore, the rack is detachably fixed to the base, and the length of the rack is greater than the length of the groove.

[0017] Furthermore, the tooth width of the gear is greater than the width of the rack.

[0018] Furthermore, the telescopic drive component is configured as a lead screw motor, and the telescopic rod is configured as the output lead screw of the lead screw motor.

[0019] Furthermore, the rear end of the seat cushion is provided with a rear connecting rod, the upper end of the rear connecting rod is rotatably connected to the seat cushion, and the lower end of the rear connecting rod is rotatably connected to the base;

[0020] The seat cushion is equipped with a high-adjustment lead screw motor. The telescopic end of the high-adjustment lead screw motor is rotatably connected to the rear connecting rod, and the high-adjustment lead screw motor can drive the rear connecting rod to rotate, thereby raising the seat cushion.

[0021] This utility model also proposes a zero-gravity seat, which is equipped with the above-mentioned adjustment mechanism.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] In this invention, a rack is provided on the base along the length of the slide groove, and a gear is configured at the telescopic end of the telescopic drive component. The gear meshes with the rack. When the seat switches between the normal mode and the zero-gravity mode, the telescopic drive component drives the lower end of the zero-gravity linkage to slide along the slide groove. At the same time, the gear rotates along the meshing rack. The gear and rack cooperation provides a locking function, making the seat stronger in the event of a collision and effectively improving the seat's safety performance. Furthermore, the overall structure of the adjustment mechanism is simple, with few hinge points, resulting in small cumulative tolerances and enabling rapid response for adjustment.

[0024] In this invention, the telescopic end of the telescopic rod is equipped with a synchronizing rod, and each end of the synchronizing rod is provided with a gear. A rack is provided on each side of the base. The two gears mesh with the two racks respectively. The telescopic end of the telescopic drive unit drives the synchronizing rod to move, so that the two gears mesh with the two racks synchronously, ensuring that the movements of the front sides of the seat are synchronized. The synchronization is good, and only one telescopic drive unit (i.e., zero-gravity adjustment screw motor) is needed for the drive, which is low in cost.

[0025] In this invention, the rear end of the seat cushion is connected to the base via a rear connecting rod. A high-adjustment screw motor is installed on the seat cushion, and the telescopic end of the high-adjustment screw motor is rotatably connected to the rear connecting rod. The high-adjustment screw motor can drive the rear connecting rod, thereby moving the seat cushion and adjusting its height. In other words, this seat combines zero-gravity adjustment and height adjustment, which can improve the comfort of passengers. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the adjustment mechanism of this utility model installed in a zero-gravity seat;

[0027] Figure 2 for Figure 1 A structural diagram from another perspective;

[0028] Figure 3 for Figure 1 Structural diagram after removing the seat cushion and backrest;

[0029] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0030] Figure 5 for Figure 2 Structural diagram after removing the seat cushion and backrest;

[0031] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0032] Figure 7 This is an assembly drawing of the telescopic drive component, synchronizing rod, gear, rack, and zero-gravity linkage.

[0033] In the picture:

[0034] 1. Base; 10. Slide groove; 11. Rack;

[0035] 2. Seat cushion;

[0036] 3. Telescopic drive component; 31. Telescopic rod; 32. Gear; 33. Synchronizing rod; 330. Limiting convex ring; 34. Bushing;

[0037] 4. Zero-gravity linkage;

[0038] 5. Rear connecting rod;

[0039] 6. High-adjustment lead screw motor; 60. Telescopic bushing. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0042] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] Example 1:

[0046] like Figures 1-4 As shown, this embodiment describes a zero-gravity seat adjustment mechanism applied in a car seat equipped with a zero-gravity mode. The adjustment mechanism mainly includes:

[0047] The base 1 has a slide groove 10 and a rack 11 along the length of the slide groove 10. Taking the actual use direction of the car seat as a reference, the slide groove 10 is opened along the front-back direction of the base 1, so the rack 11 is also set along the front-back direction.

[0048] The seat cushion 2 is movably mounted on the base 1. In this embodiment, when the seat is adjusted to zero gravity, the front end of the seat cushion 2 moves while the rear end remains stationary. When the seat is adjusted to height, both the front and rear ends of the seat cushion 2 move, simultaneously raising or lowering.

[0049] The telescopic drive component 3 and the zero-gravity linkage 4 are provided. The upper end of the zero-gravity linkage 4 is rotatably connected to the front end of the seat cushion 2, and the lower end of the zero-gravity linkage 4 is slidably disposed in the slide groove 10. The telescopic drive component 3 is disposed on the base 1 and has a telescopic rod 31. The telescopic end of the telescopic rod 31 is connected to the lower end of the zero-gravity linkage 4. The telescopic drive component 3 can drive the lower end of the zero-gravity linkage 4 to slide along the slide groove 10 so that the seat can switch between a normal posture and a zero-gravity posture. The telescopic end is equipped with a gear 32, which meshes with a rack 11.

[0050] In actual use, when the seat switches to zero gravity mode, the telescopic drive 3 drives the lower end of the zero gravity linkage 4 to slide along the slide groove 10, and the gear 32 rotates along the rack 11.

[0051] In this embodiment, the adjustment mechanism of the zero-gravity seat has a rack 11 on the base 1 near the slide groove 10 along its length. A gear 32 is mounted on the telescopic end of the telescopic drive member 3, meshing with the rack 11. When the seat switches between normal and zero-gravity modes, the telescopic drive member 3 drives the lower end of the zero-gravity linkage 4 to slide along the slide groove 10. Simultaneously, the gear 32 rotates along the rack 11. The engagement of the gear 32 and the rack 11 provides a locking function, increasing the seat's strength in the event of a collision and effectively improving its safety performance. Furthermore, the overall structure of the adjustment mechanism is simple, with few hinge points, resulting in small cumulative tolerances and enabling rapid adjustment.

[0052] Furthermore, such as Figures 3-7 As shown, in this embodiment, a sliding groove 10 is provided on each side of the base 1 along the front-rear direction, and a rack 11 is provided in each of the two sliding grooves 10 along their respective length directions. A synchronizing rod 33 is provided at the telescopic end of the telescopic rod 31, and a gear 32 is provided at each end of the synchronizing rod 33. The two gears 32 mesh with the two racks 11 respectively. By providing a gear 32 at each end of the synchronizing rod 33 and meshing the two gears 32 with the two racks 11 on the base 1 respectively, the locking strength of the front sides of the seat is ensured.

[0053] A zero-gravity connecting rod 4 is provided on each side of the seat cushion 2. Two gears 32 are rotatably connected to the two ends of the synchronizing rod 33, and the lower ends of the two zero-gravity connecting rods 4 are connected to the two gears 32. When the telescopic drive 3 extends or retracts, it drives the synchronizing rod 33 to slide, the gears 32 rotate along the rack 11, and the lower ends of the zero-gravity connecting rods 4 slide along the slide groove 10.

[0054] Specifically, in this embodiment, the rack 11 is detachably fixed to the base 1. Each end of the rack 11 is provided with a through hole, and the base 1 is provided with a threaded hole corresponding to the through hole. Each end of the rack 11 is detachably fixed to the base 1 by a bolt passing through the through hole and threaded into the threaded hole, thus ensuring that the rack 11 is easy to assemble and disassemble.

[0055] Furthermore, the length of rack 11 is greater than the length of groove 10, ensuring that gear 32 and rack 11 remain engaged throughout the entire sliding process of the lower end of zero-gravity connecting rod 4, thereby ensuring its locking function. Further, the tooth width of gear 32 is greater than the width of rack 11, ensuring the meshing effect between gear 32 and rack 11.

[0056] Preferably, in this embodiment, the telescopic drive 3 is configured as a lead screw motor, and the telescopic rod 31 is configured as the output lead screw of the lead screw motor. The lead screw motor causes its output lead screw to telescopically move, thereby driving the zero-gravity linkage 4 to move, so that the seat moves between a normal sitting posture and a zero-gravity posture.

[0057] It should be explained that since the telescopic drive 3 drives the telescopic rod 31 to extend and retract, thereby causing the lower end of the zero-gravity connecting rod 4 to slide along the slide groove 10, in principle, this action can also be achieved by configuring the telescopic drive 3 as a drive structure similar to a gas spring, hydraulic cylinder, or pneumatic cylinder. However, in this embodiment, the telescopic drive 3 is preferably a lead screw motor.

[0058] Furthermore, a bushing 34 is provided at the telescopic end of the telescopic rod 31. The bushing 34 is sleeved on the synchronizing rod 33 and is rotatably connected to the synchronizing rod 33 to ensure that the telescopic end moves smoothly and without jamming when driving the synchronizing rod 33.

[0059] The synchronizing rod 33 is provided with two limiting protrusions 330 at intervals along its axial direction. The bushing 34 is restricted between the two limiting protrusions 330. In actual use, the left and right sides of the bushing 34 are respectively limited by the two limiting protrusions 330 to ensure that the bushing 34 will not move along the axial direction of the synchronizing rod 33, thus ensuring the reliability of the transmission.

[0060] In actual use, the telescopic rod 31 of this embodiment is equipped with a synchronizing rod 33 at its telescopic end. A gear 32 is provided at each end of the synchronizing rod 33. A rack 11 is provided on each side of the base 1. The two gears 32 mesh with the two racks 11 respectively. The telescopic drive 3 drives the synchronizing rod 33 to move, so that the two gears 32 mesh with the two racks 11 synchronously, ensuring that the movements of the front sides of the seat are synchronized. The synchronization is good, and only one telescopic drive 3 (i.e., zero gravity adjustment screw motor) is needed for the drive, which is low cost.

[0061] In this embodiment, the rear end of the seat cushion 2 is provided with a rear connecting rod 5. The upper end of the rear connecting rod 5 is rotatably connected to the seat cushion 2, and the lower end of the rear connecting rod 5 is rotatably connected to the base 1. A high-adjustment lead screw motor 6 is configured on the seat cushion 2. The telescopic end of the high-adjustment lead screw motor 6 is rotatably connected to the rear connecting rod 5. Specifically, a telescopic bushing 34 is provided on the lead screw of the high-adjustment lead screw motor 6. The end of the telescopic bushing 34 away from the lead screw is the telescopic end of the high-adjustment lead screw motor 6. The high-adjustment lead screw motor 6 can drive the rear connecting rod 5 to rotate, thereby raising the seat cushion 2.

[0062] In actual use, the rear end of the seat cushion 2 is connected to the base 1 via the rear connecting rod 5. The seat cushion 2 is equipped with a high-adjustment screw motor 6. The telescopic end of the high-adjustment screw motor 6 is rotatably connected to the rear connecting rod 5. The high-adjustment screw motor 6 can drive the rear connecting rod 5, thereby moving the seat cushion 2 and adjusting its height. In other words, this seat combines zero-gravity adjustment and height adjustment to improve passenger comfort.

[0063] In this embodiment, the high-adjustment lead screw motor 6 can be driven and locked to achieve height adjustment of the seat cushion 2. The zero-gravity adjustment lead screw motor (i.e., the telescopic drive component 3) can drive the seat cushion 2 to switch between a zero-gravity posture and a normal sitting posture. After the high-adjustment lead screw motor 6 is locked, the zero-gravity adjustment is achieved by a three-bar slider structure, and the lower end of the zero-gravity link 4 slides to adjust the tilt angle of the front end of the seat cushion 2.

[0064] Example 2:

[0065] like Figures 1-2As shown in this embodiment, a zero-gravity seat is provided with the adjustment mechanism described in Embodiment 1.

[0066] In this design, during zero-gravity adjustment, the gear 32 and rack 11 work together to provide a locking function, which makes the seat stronger in the event of a collision and can effectively improve the safety performance of the seat. In addition, its overall structure is simple, strong and has good motion synchronization.

Claims

1. An adjustment mechanism for a zero-gravity seat, characterized in that, Comprising: A base provided with a chute thereon, and a rack is provided along the length direction of the chute; A seat cushion movably arranged on the base; A telescopic driving member and a zero-gravity connecting rod, the upper end of the zero-gravity connecting rod is rotatably connected to the front end of the seat cushion, and the lower end is slidably arranged in the chute; the telescopic driving member is arranged on the base and has a telescopic rod, the telescopic end of the telescopic rod is connected to the lower end of the zero-gravity connecting rod, and the telescopic end is provided with a gear, and the gear meshes with the rack; When the seat is switched to the zero-gravity mode, the telescopic driving member drives the lower end of the zero-gravity connecting rod to slide along the chute, and the gear rotates meshingly along the rack.

2. The adjustment mechanism of the zero-gravity seat according to claim 1, wherein One chute is provided on each side of the base, and one rack is provided along the length direction of each of the two chutes; The telescopic end of the telescopic rod is provided with a synchronous rod, and one gear is provided at each end of the synchronous rod, and the two gears respectively mesh with the two racks.

3. The adjusting mechanism of the zero-gravity seat according to claim 2, wherein The telescopic end of the telescopic rod has a bushing, and the bushing is sleeved on the synchronous rod and is rotatably connected to the synchronous rod.

4. The adjusting mechanism of the zero-gravity seat according to claim 3, characterized in that, Two limiting convex rings are arranged at intervals along the axial direction of the synchronous rod, and the bushing is restricted between the two limiting convex rings.

5. The adjustment mechanism of the zero-gravity seat according to claim 2, characterized in that, One zero-gravity connecting rod is provided on each side of the seat cushion; The two gears are respectively rotatably connected to the two ends of the synchronous rod, and the lower ends of the two zero-gravity connecting rods are respectively connected to the two gears.

6. The adjustment mechanism of the zero-gravity seat according to claim 1, wherein The rack is detachably and fixedly connected to the base, and the length of the rack is greater than the length of the chute.

7. The adjusting mechanism of the zero-gravity seat according to claim 1 or 2, characterized in that, The tooth width of the gear is greater than the width of the rack.

8. The adjusting mechanism of the zero-gravity seat according to claim 1, characterized in that, The telescopic driving member is configured as a screw motor, and the telescopic rod is configured as the output screw of the screw motor.

9. The adjusting mechanism of the zero-gravity seat according to claim 1, characterized in that, A rear connecting rod is provided at the rear end of the seat cushion, the upper end of the rear connecting rod is rotatably connected to the seat cushion, and the lower end of the rear connecting rod is rotatably connected to the base; A high-lift screw motor is arranged on the seat cushion, the telescopic end of the high-lift screw motor is rotatably connected to the rear connecting rod, and the high-lift screw motor can drive the rear connecting rod to rotate to lift the seat cushion.

10. A zero-gravity seat, characterized in that, It is equipped with the adjusting mechanism according to any one of claims 1-9.

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