Low-torsional-strength zero-gravity driving locking mechanism for automobile seat
By designing a zero-gravity drive locking mechanism with low torsion strength of the car seat, the slide rail assembly and seat frame skeleton structure are used, combined with the tooth plate and the zero-gravity motor drive mechanism, the existing zero-gravity seat self-locking performance is solved. The problem of insufficient results enables a locking strength with simple structure and low cost.
Patent Information
- Application Number
- CN202421788824.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing zero-gravity seats lack self-locking performance in high-speed collision and suitcase impact tests, and the linkage structure is prone to failure, causing the seat to swell and squeeze passengers. The existing solution structure is complex and the cost is high.
A zero-gravity drive locking mechanism with low torsion strength of the car seat is designed, adopting a slide rail assembly and seat frame skeleton structure, and the zero-gravity motor drive mechanism realizes zero-gravity adjustment and locking of the seat through the tooth plate and the zero-gravity motor drive mechanism. Simple, low cost.
It effectively ensures the locking strength of the seat in high-speed collision and suitcase impact tests, and the overall structure is simple and low cost. It is suitable for four-link or five-link zero-gravity seats.
Smart Images
Figure CN222432131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile seats, in particular to a zero-gravity driving locking mechanism with low torsional strength for automobile seats. Background Art
[0002] With the continuous development of the automotive industry and the continuous improvement of intelligence, the comfort requirements of car seats by end customers and automobile OEMs are increasing. Under the promotion of new scenarios, zero-gravity seats are mentioned more and more. The goal of "zero-gravity" posture seat adjustment is to meet the support requirements of the three main parts of the occupants' feet, thighs and torso, so that the three parts receive sufficient and appropriate support, disperse the pressure on the back and legs, and relax the muscles of the whole body, so as to achieve the ultimate relaxation state of the occupants.
[0003] However, the self-locking performance of the zero-gravity seat is insufficient. When the vehicle is hit from behind at high speed, the linkage structure of the zero-gravity seat is prone to failure, causing the seat to flip back and squeeze the passengers. Under the working conditions of high-speed collision and luggage compartment impact test, the existing zero-gravity belt ABTS seat generally adopts double angle adjusters or double screws, or a double gear drive mechanism to ensure the test locking strength, but its structure is complex and the cost is high. Utility Model Content
[0004] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide a zero-gravity drive locking mechanism with low torsional strength for a car seat, which can effectively ensure the locking strength and has a simple structure and reduced cost.
[0005] In order to achieve the above-mentioned purpose, the utility model proposes a zero-gravity drive locking mechanism with low torsional strength for an automobile seat, comprising a slide rail assembly and a seat frame frame arranged above the slide rail assembly, the front ends of the seat frame frame are rotatably connected to front connecting rods respectively, the rear ends of the seat frame frame are respectively connected to rear connecting rods, the other ends of the two rear connecting rods are rotatably connected to the slide rail assembly, and also comprises a zero-gravity drive shaft rotatably connected to the front end of the slide rail assembly, the zero-gravity drive shaft is arranged horizontally, and lifting connecting rods are fixed at both ends thereof, the other ends of the two lifting connecting rods are rotatably connected to the corresponding side front connecting rods, and the zero-gravity drive shaft is equipped with a driving mechanism capable of driving it to rotate; when the driving mechanism drives the zero-gravity drive shaft and the lifting connecting rod to rotate, so that the seat is in a zero-gravity posture, the driving mechanism is locked, and the lifting connecting rod rotates and unfolds relative to the front connecting rod and is in line; when the driving mechanism drives the zero-gravity drive shaft and the lifting connecting rod to rotate, so that the seat is in a designed position posture, the driving mechanism is locked, and the lifting connecting rod overlaps with the front connecting rod.
[0006] In the above scheme: the driving mechanism includes a toothed plate fixed on the zero-gravity drive shaft and a zero-gravity motor fixed on the slide rail assembly. The zero-gravity motor is provided with a driving gear meshing with the toothed plate. The driving gear can drive the toothed plate to rotate, thereby driving the zero-gravity drive shaft and the lifting connecting rod to rotate. The toothed plate is provided with an upper stop point and a lower stop point for limiting its rotation stroke. When the toothed plate rotates to the extreme position corresponding to the upper stop point, the seat is in a zero-gravity posture. When the toothed plate rotates to the extreme position corresponding to the lower stop point, the seat is in a designed position posture. The driving mechanism has a simple structure and is easy to arrange. The zero-gravity adjustment of the seat is achieved through the cooperation of the toothed plate and the zero-gravity motor.
[0007] In the above scheme: the design position posture includes the initial use position and the high-adjustment middle position. When the rear link is fixedly connected to the rear end of the seat frame frame, the lifting link, front link, seat frame frame, rear link and slide rail assembly form a four-link mechanism. At this time, when the tooth plate rotates to the limit position corresponding to the lower stop point, the seat is in the initial use position; when the rear link is rotatably connected to the rear end of the seat frame frame, the lifting link, front link, seat frame frame, rear link and slide rail assembly form a five-link mechanism, and the rear end of the seat frame frame is equipped with a height adjustment mechanism. At this time, when the tooth plate rotates to the limit position corresponding to the lower stop point, the seat is in the high-adjustment middle position. The initial use position is the position where the seat is not adjusted backward, and the high-adjustment middle position is the position where the seat is adjusted to the middle height by the height adjustment mechanism.
[0008] In the above scheme: two front slide rail brackets are symmetrically fixed at the front end of the slide rail assembly, the zero gravity drive shaft is rotatably connected between the two front slide rail brackets, and two rear slide rail brackets are symmetrically fixed at the rear end of the slide rail assembly. Two rear connecting rods are rotatably connected to the two rear slide rail brackets one by one. The structure is simple and easy to install.
[0009] In the above scheme: the zero-gravity motor is fixed to one of the front slide rail brackets through a motor fixing bracket, and the motor fixing bracket is rotatably sleeved on the zero-gravity drive shaft to further ensure the stability of the installation structure.
[0010] In the above scheme: the teeth at both ends of the toothed plate are respectively arranged as an upper stop point and a lower stop point. When the driving gear of the zero gravity motor abuts against the upper stop point or the lower stop point, the upper stop point or the lower stop point can clamp the driving gear to stop it, thereby locking the driving mechanism. The teeth at both ends of the toothed plate can form an upper stop point and a lower stop point that limit the travel of the toothed plate by enlarging or widening the teeth.
[0011] The beneficial effects of the utility model are as follows: the structure is applicable to a zero-gravity seat with four or five linkages. When the seat is in the design position, the front link and the lifting link overlap, and both are at the dead point position; when the seat is in the zero-gravity position, the front link and the lifting link rotate and unfold to be exactly collinear, and both are also at the dead point position. At this time (dead point position), under the working conditions of the high-speed collision and luggage compartment impact test with ABTS, the torsional strength of the zero-gravity drive shaft is theoretically zero, so a zero-gravity drive mechanism with low torsional strength can be selected to ensure the locking strength, and the overall structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the seat in the designed position.
[0013] Figure 2 yes Figure 1 A simple diagram of the.
[0014] Figure 3 is a schematic diagram of the seat in a zero-gravity posture.
[0015] Figure 4 yes Figure 3 A simple diagram of the.
[0016] Figure 5 It is an explosion schematic diagram of the utility model.
[0017] Figure 6 It is a schematic diagram of the gear plate rotating to the limit position corresponding to the lower stop point.
[0018] Figure 7 It is a schematic diagram of the gear plate rotating to the limit position corresponding to the upper stop point.
[0019] Figure 8 This is a schematic diagram of the installation of the seat belt retractor. DETAILED DESCRIPTION
[0020] like Figure 1 As shown in FIG. 8 , a zero-gravity drive locking mechanism with low torsional strength for a car seat is mainly composed of a slide rail assembly 1, a seat frame frame 2 arranged above the slide rail assembly 1, and a zero-gravity drive shaft 4 rotatably connected to the front end of the slide rail assembly 1. Front connecting rods 3 are rotatably connected to both sides of the front end of the seat frame frame 2, and rear connecting rods 6 are connected to both sides of the rear end of the seat frame frame 2, and the other ends of the two rear connecting rods 6 are rotatably connected to the slide rail assembly 1.
[0021] The zero-gravity drive shaft 4 is disposed transversely, and lifting links 5 are fixedly disposed at both ends thereof, and the other ends of the two lifting links 5 are rotatably connected to the corresponding side front links 3 .
[0022] The zero-gravity drive shaft 4 is equipped with a drive mechanism capable of driving the zero-gravity drive shaft 4 to rotate.
[0023] When the driving mechanism drives the zero-gravity driving shaft 4 and the lifting link 5 to rotate so that the seat is in a zero-gravity posture, the driving mechanism is locked, and the lifting link 5 rotates and unfolds relative to the front link 3 and is in line.
[0024] When the driving mechanism drives the zero-gravity driving shaft 4 and the lifting link 5 to rotate so that the seat is in a designed position, the driving mechanism is locked and the lifting link 5 overlaps with the front link 3.
[0025] Preferably, the driving mechanism includes a toothed plate 7 fixed on the zero-gravity driving shaft 4 and a zero-gravity motor 8 fixed on the slide rail assembly 1. The zero-gravity motor 8 is provided with a driving gear meshing with the toothed plate 7. The driving gear can drive the toothed plate 7 to rotate, thereby driving the zero-gravity driving shaft 4 and the lifting connecting rod 5 to rotate. The toothed plate 7 is provided with an upper stop point and a lower stop point for limiting its rotation stroke. When the toothed plate 7 rotates to the extreme position corresponding to the upper stop point, the seat is in a zero-gravity posture. When the toothed plate 7 rotates to the extreme position corresponding to the lower stop point, the seat is in a designed position posture. The driving mechanism has a simple structure and is easy to arrange. The zero-gravity adjustment of the seat is achieved through the cooperation of the toothed plate 7 and the zero-gravity motor 8.
[0026] Preferably, the design position posture includes an initial use position and a high-profile intermediate position. When the rear connecting rod 6 is fixedly connected to the rear end of the seat frame frame 2, the lifting connecting rod 5, the front connecting rod 3, the seat frame frame 2, the rear connecting rod 6 and the slide rail assembly 1 form a four-bar mechanism. At this time, when the tooth plate 7 rotates to the extreme position corresponding to the lower stop point, the seat is in the initial use position.
[0027] When the rear connecting rod 6 is rotationally connected to the rear end of the seat frame frame 2, the lifting connecting rod 5, the front connecting rod 3, the seat frame frame 2, the rear connecting rod 6 and the slide rail assembly 1 form a five-link mechanism, and the rear end of the seat frame frame 2 is equipped with a height adjustment mechanism. At this time, when the tooth plate 7 rotates to the extreme position corresponding to the lower stop point, the seat is in the middle position of the high adjustment.
[0028] The initial use position is the position where the seat has not been adjusted backwards, and the high-adjustment middle position is the position where the seat is adjusted to an intermediate height through the height adjustment mechanism.
[0029] Preferably, two front slide rail brackets 9 are symmetrically fixed to the front end of the slide rail assembly 1, the zero gravity drive shaft 4 is rotatably connected between the two front slide rail brackets 9, and two rear slide rail brackets 10 are symmetrically fixed to the rear end of the slide rail assembly 1, and the two rear connecting rods 6 are rotatably connected to the two rear slide rail brackets 10 one by one. The structure is simple and easy to install.
[0030] Preferably, the zero-gravity motor 8 is fixed to one of the front slide rail brackets 9 via a motor fixing bracket 11, and the motor fixing bracket 11 is rotatably mounted on the zero-gravity drive shaft 5 to further ensure the stability of the installation structure.
[0031] Preferably, the teeth at both ends of the tooth plate 7 are respectively arranged as an upper stop point and a lower stop point. When the driving gear of the zero gravity motor 8 abuts against the upper stop point or the lower stop point, the upper stop point or the lower stop point can clamp the driving gear to stop it, thereby locking the driving mechanism. The teeth at both ends of the tooth plate 7 can form an upper stop point and a lower stop point that limit the travel of the tooth plate 7 by enlarging or widening the teeth.
Claims
1. A zero-gravity drive locking mechanism with low torsional strength for an automobile seat, comprising a slide rail assembly (1) and a seat frame frame (2) arranged above the slide rail assembly (1), the front ends of the seat frame frame (2) are rotatably connected to front connecting rods (3) on both sides, the rear ends of the seat frame frame (2) are respectively connected to rear connecting rods (6) on both sides, and the other ends of the two rear connecting rods (6) are both rotatably connected to the slide rail assembly (1), characterized in that: It also includes a zero-gravity drive shaft (4) rotatably connected to the front end of the slide rail assembly (1), the zero-gravity drive shaft (4) is arranged horizontally, and lifting connecting rods (5) are fixed at both ends of the zero-gravity drive shaft (4), and the other ends of the two lifting connecting rods (5) are rotatably connected to the corresponding side front connecting rods (3), and the zero-gravity drive shaft (4) is equipped with a driving mechanism capable of driving the zero-gravity drive shaft (4) to rotate; When the driving mechanism drives the zero-gravity driving shaft (4) and the lifting link (5) to rotate so that the seat is in a zero-gravity posture, the driving mechanism is locked, and the lifting link (5) rotates and unfolds relative to the front link (3) and is in line with each other; when the driving mechanism drives the zero-gravity driving shaft (4) and the lifting link (5) to rotate so that the seat is in a designed position posture, the driving mechanism is locked, and the lifting link (5) overlaps relative to the front link (3).
2. The zero-gravity drive locking mechanism with low torsional strength for a car seat according to claim 1, characterized in that: The driving mechanism comprises a toothed plate (7) fixedly mounted on the zero-gravity driving shaft (4) and a zero-gravity motor (8) fixedly mounted on the slide rail assembly (1); the zero-gravity motor (8) is provided with a driving gear meshing with the toothed plate (7); the driving gear can drive the toothed plate (7) to rotate, thereby driving the zero-gravity driving shaft (4) and the lifting connecting rod (5) to rotate; the toothed plate (7) is provided with an upper stop point and a lower stop point for limiting its rotation stroke; when the toothed plate (7) rotates to the extreme position corresponding to the upper stop point, the seat is in a zero-gravity posture; when the toothed plate (7) rotates to the extreme position corresponding to the lower stop point, the seat is in a designed position posture.
3. The zero-gravity drive locking mechanism with low torsional strength for a car seat according to claim 2, characterized in that: The designed position posture comprises an initial use position and a high-profile middle position. When the rear connecting rod (6) is fixedly connected to the rear end of the seat frame frame (2), the lifting connecting rod (5), the front connecting rod (3), the seat frame frame (2), the rear connecting rod (6) and the slide rail assembly (1) form a four-link mechanism. At this time, when the tooth plate (7) rotates to the extreme position corresponding to the lower stop point, the seat is in the initial use position; when the rear connecting rod (6) is rotationally connected to the rear end of the seat frame frame (2), the lifting connecting rod (5), the front connecting rod (3), the seat frame frame (2), the rear connecting rod (6) and the slide rail assembly (1) form a five-link mechanism, and the rear end of the seat frame frame (2) is equipped with a height adjustment mechanism. At this time, when the tooth plate (7) rotates to the extreme position corresponding to the lower stop point, the seat is in the high-profile middle position.
4. The zero-gravity drive locking mechanism with low torsional strength for a car seat according to claim 2, characterized in that: Two front slide rail brackets (9) are fixedly and symmetrically arranged at the front end of the slide rail assembly (1); the zero-gravity drive shaft (4) is rotatably connected between the two front slide rail brackets (9); two rear slide rail brackets (10) are fixedly and symmetrically arranged at the rear end of the slide rail assembly (1); and two rear connecting rods (6) are rotatably connected to the two rear slide rail brackets (10) one by one.
5. The zero-gravity drive locking mechanism with low torsional strength for a car seat according to claim 4, characterized in that: The zero-gravity motor (8) is fixed to one of the front slide rail brackets (9) via a motor fixing bracket (11), and the motor fixing bracket (11) is rotatably mounted on the zero-gravity drive shaft (4).
6. The zero-gravity drive locking mechanism with low torsional strength for a car seat according to claim 2, characterized in that: The teeth at both ends of the toothed plate (7) are respectively arranged to form an upper stop point and a lower stop point. When the driving gear of the zero-gravity motor (8) abuts against the upper stop point or the lower stop point, the upper stop point or the lower stop point can clamp the driving gear to stop it from rotating, thereby achieving locking of the driving mechanism.