Zero-gravity seat with seat cushion with height adjusting function

Abstract

The utility model discloses a zero-gravity seat with a seat cushion with a height adjusting function, which comprises a base, a seat frame is arranged above the base, a seat backrest is rotatably mounted at the rear end of the seat frame, a lower connecting piece is rotatably connected to the front end of the base, an upper connecting piece is rotatably connected to the front end of the seat frame, and the lower connecting piece and the upper connecting piece are mutually hinged. A rotating part is also arranged between the rear part of the base and the rear part of the seat frame; the rotating part is provided with a first fulcrum rotationally connected with the rear end of the seat frame and a second fulcrum rotationally connected with the base; a zero-gravity driving mechanism and a height adjustment driving mechanism are installed on the base, the zero-gravity driving mechanism is used for driving the lower connecting piece to rotate relative to the base, and the height adjustment driving mechanism is used for driving the rotating component to rotate relative to the base with the second fulcrum as the rotating center. The zero-gravity seat has the beneficial effects that through the arrangement of the rotating part, the seat has a zero-gravity mode and also has a seat cushion height adjusting function.

Description

Technical Field

[0001] The utility model relates to the technical field of zero - gravity seats, and particularly relates to a zero - gravity seat with a seat cushion height - adjustment function. Background Art

[0002] The zero - gravity seat is one of the products that satisfy people's comfortable ride in a car. By lifting the front end of the seat frame upward, reclining the seat back backward, and tilting the leg rest forward, the occupant can be in an approximately lying position, thereby reducing the fatigue caused by long - time sitting.

[0003] In the prior art, the rear end of the zero - gravity seat frame is rotatably installed on the seat base, and a set of link mechanisms are arranged between the front end and the front end of the base. By driving the link mechanisms with an electric angle adjuster, the front end of the seat frame can be lifted. Based on this mechanism, the link mechanisms and the electric angle adjuster greatly occupy the assembly space between the seat frame and the base, resulting in the inability to add additional mechanisms to the seat frame for seat frame height - adjustment function, thus limiting the overall function of the seat. Summary of the Utility Model

[0004] In view of this, the utility model provides a zero - gravity seat with a seat cushion height - adjustment function, aiming to ensure that the seat has both zero - gravity mode adjustment (lifting the front end of the seat frame) and seat cushion height - adjustment function.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A zero - gravity seat with a seat cushion height - adjustment function, including a base, a seat frame is arranged above the base, a seat back is rotatably installed at the rear end of the seat frame, a lower connecting piece is rotatably connected to the front end of the base, an upper connecting piece is rotatably connected to the front end of the seat frame, and the lower connecting piece and the upper connecting piece are hinged to each other. It is characterized in that: a rotating component is arranged between the rear part of the base and the rear part of the seat frame, and the rotating component has a first fulcrum rotatably connected to the rear end of the seat frame and a second fulcrum rotatably connected to the base; a zero - gravity driving mechanism and a height - adjustment driving mechanism are installed on the base, the zero - gravity driving mechanism is used to drive the lower connecting piece to rotate relative to the base, and the height - adjustment driving mechanism is used to drive the rotating component to rotate relative to the base with the second fulcrum as the rotation center.

[0007] With the above structure, by driving the lower connecting piece to rotate with the zero - gravity driving mechanism, the elevation angle of the seat frame can be adjusted. By driving the rotating component to rotate relative to the base with the height - adjustment driving mechanism, the height of the seat frame can be adjusted, so that the seat has both zero - gravity mode and seat cushion height - adjustment function.

[0008] Preferably, the rotating member includes a rear cross tube and two sets of adapter plates fixedly connected to both ends of the rear cross tube. Both ends of the rear cross tube are rotatably sleeved on the rear part of the seat frame, and the middle parts of the two sets of adapter plates are respectively rotatably installed on both sides inside the base. There are two sets of high-lift driving mechanisms, which are respectively used to drive the two sets of adapter plates to rotate. With the above structure, the rotating member is more firmly installed through the symmetrically arranged two adapter plates, and then through the two sets of high-lift driving mechanisms arranged at the front end, sufficient driving force is ensured, thereby ensuring the stable upward lifting of the seat cushion.

[0009] Preferably, an arc section adapted to the contour of the rear cross tube and a support portion extending backward from the lower end of the arc section are provided at the rear end of the adapter plate. Both the arc section and the support portion are welded to the rear cross tube. With the above structure, the structure of the entire rotating member can be made more firm.

[0010] Preferably, the high-lift driving mechanism includes a motor and a lead screw driven to rotate by the motor. The base of the motor is rotatably arranged at the middle position of the base. A slider is threadedly assembled on the lead screw, and one end of the slider away from the motor is rotatably connected to the adapter plate. With the above structure, by driving the slider to move linearly by the lead screw, the rotating member can be rotated relative to the base with the second fulcrum as the rotation center.

[0011] Preferably, a support guiding hole is provided on the side of the base, and a guiding rod protruding outward is provided on the slider. The guiding rod is slidably supported in the support guiding hole. With the above structure, the support stability at this place can be improved, and thus the strength of the seat can be improved.

[0012] Preferably, the support guiding hole is an arc-shaped hole, and an avoidance groove recessed upward is provided on the upper side of the arc-shaped hole. With the above structure, the arc-shaped movement track of the slider can be adapted, and the avoidance groove can prevent the lead screw from being bent and damaged when the vehicle seat collides in the high-lift state.

[0013] Preferably, a connecting bracket is provided on the slider, the guiding rod is arranged on the connecting bracket, an extension portion extending toward the motor direction is provided on the adapter plate, and the connecting bracket is rotatably connected to the extension portion, and the installation position is located at the front end of the second fulcrum. With the above structure, while ensuring that the rotating member has sufficient rotation stroke, the overall length of the lead screw can be reduced.

[0014] Preferably, there are two sets of the lower connecting pieces and the upper connecting pieces. The two sets of the lower connecting pieces and the upper connecting pieces are symmetrically arranged on both sides of the base. The two lower connecting pieces are connected by a first synchronizing rod, and the two upper connecting pieces are connected by a second synchronizing rod. The zero-gravity driving mechanism is an electric angle adjuster for driving the lower connecting piece to rotate. With the above structure, the front end of the seat frame can be stably connected to the base, and thus the stable lifting of the front end of the seat frame can be achieved.

[0015] Preferably, two first limiting parts are turned up on both sides of the front end of the base. When the seat is in the folded state, the lower connecting piece can abut against the first limiting parts; two second limiting parts extend outwards on both sides of the front end of the base. A limiting protrusion is arranged on the side surface of the lower connecting piece close to the seat frame. When the seat is in the zero-gravity mode, the side part of the limiting protrusion abuts against the second limiting parts. With the above structure, the seat can be limited and supported respectively when it is in the folded state and the zero-gravity mode, ensuring the structural stability of the whole seat.

[0016] Preferably, a seat belt retractor is arranged at the shoulder position of the seat backrest. With the above structure, it can be ensured that in the zero-gravity mode, the seat belt always plays a restraining role on the occupant, and thus the riding safety of the occupant is ensured.

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

[0018] 1. By using the zero-gravity seat with the high-lift function of the seat cushion belt provided by the present utility model, the elevation angle of the seat frame can be adjusted by driving the lower connecting piece to rotate through the zero-gravity driving mechanism, and the height of the seat frame can be adjusted by driving the rotating part to rotate relative to the base through the high-lift driving mechanism. Thus, the seat has both the zero-gravity mode adjustment and the high-lift function of the seat cushion.

[0019] 2. The rotating part is driven by two symmetrically arranged high-lift driving mechanisms, which not only ensures the stability of the overall structure, but also provides sufficient driving force to lift the whole seat frame upwards.

[0020] 3. By arranging the seat belt retractor at the shoulder position of the seat backrest, when the vehicle seat is in the zero-gravity mode, the seat belt can always play a restraining role on the occupant, and thus the riding safety of the occupant is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the seat in the folded state;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the seat in the zero-gravity mode;

[0023] Figure 3Schematic three-dimensional structure diagram when the seat cushion is in the high-profile state;

[0024] Figure 4 Schematic three-dimensional structure diagram when the seat is in the zero-gravity mode and the high-profile state;

[0025] Figure 5 Schematic structure diagram showing the installation relationship between the rotating member 6 and the high-profile drive mechanism 7;

[0026] Figure 6 Exploded view of the rotating member 6;

[0027] Figure 7 Partial enlarged view when the seat is in the zero-gravity mode;

[0028] Figure 8 Partial enlarged view when the seat is in the folded state;

[0029] Figure 9 Schematic structure diagram showing the support guide hole 1a;

[0030] Figure 10 Schematic structure diagram showing the installation relationship between the seat frame 2 and the seat backrest 3;

[0031] Figure 11 Schematic structure diagram of the slide rail 12. Detailed implementation mode

[0032] The present utility model will be further described below in conjunction with the embodiments and the drawings.

[0033] As Figures 1 to 4 shown, a zero-gravity seat with a seat cushion having a high-profile function includes a base 1. A seat frame 2 is installed above the base 1. A seat backrest 3 is rotatably installed at the rear end of the seat frame 2. A lower connecting piece 4 is rotatably installed at the front end of the base 1. An upper connecting piece 5 is rotatably installed at the front end of the seat frame 2 through a pin shaft 15. The lower connecting piece 4 and the upper connecting piece 5 are also rotatably connected together through the pin shaft 15. In this embodiment, a rotating member 6 is further installed between the rear end of the base 1 and the rear end of the seat frame 2. The rotating member 6 has a first fulcrum rotatably connected to the seat frame 2 and a second fulcrum rotatably connected to the base 1. A zero-gravity drive mechanism 10 and a high-profile drive mechanism 7 are also installed on the base 1. The zero-gravity drive mechanism 10 is used to drive the lower connecting piece 4 to rotate relative to the base 1. The high-profile drive structure 7 is used to drive the rotating member 6 to rotate relative to the base 1 with the second fulcrum as the rotation center. In this embodiment, the zero-gravity drive mechanism 10 and the high-profile drive mechanism 7 operate alternately, that is, when the zero-gravity drive mechanism 10 operates, the high-profile drive mechanism 7 stops, and when the high-profile drive mechanism 7 operates, the zero-gravity drive mechanism 10 stops.

[0034] With such a design, the seat has both zero-gravity mode adjustment (lifting the front end of the seat frame) and seat cushion height adjustment functions. Among them, when the high-lift drive mechanism 7 stops working, the lower connecting piece 4 is driven to rotate by the zero-gravity drive mechanism 10, which can drive the upper connecting piece 5 to rotate. While the upper connecting piece 5 rotates, the seat frame 2 can rotate around the first fulcrum, so as to realize the elevation angle adjustment of the seat frame 2. When the zero-gravity drive mechanism 10 stops working, the rotating member 6 is driven to rotate relative to the base 1 by the high-lift drive mechanism 7, which can drive the rear end of the seat frame 2 to lift upward. While the seat frame 2 is lifted, it can drive the upper connecting piece 5 to rotate with the upper end of the lower connecting piece 4 as the fulcrum, so that the front end of the seat frame 2 is lifted, thus realizing the height adjustment of the seat frame 2.

[0035] As Figure 5 and Figure 6 shown, the rotating member 6 includes an adapter plate 6a and a rear cross tube 6b. Among them, the adapter plates 6a are symmetrically arranged on both sides of the rear cross tube 6b, and both adapter plates 6a are rotatably installed at the rear end of the base 1. The high-lift drive mechanism 7 is installed at the front end of each adapter plate 6a. Both ends of the rear cross tube 6b are rotatably installed at the rear end of the seat frame 2. By the symmetrically arranged adapter plates 6a, the overall structural stability of the rotating member 6 is ensured. A set of high-lift drive mechanisms 7 are installed at the front end of each adapter plate 6a, which provides sufficient driving force for the upward lift of the seat frame 2, and further ensures the stable upward lift of the entire seat cushion.

[0036] Furthermore, as Figure 6 shown, an arc section 6a1 adapted to the contour of the rear cross tube 6b is formed at the rear end of the adapter plate 6a, and a support portion 6a2 extending backward from the lower end of the arc section 6a1. The support portion 6a2 is formed directly below the rear cross tube 6b, and both the support portion 6a2 and the arc section 6a1 are welded to the rear cross tube 6b. With such a design, the overall structural stability of the rotating member 6 can be further ensured, and thus the stable installation of the rear ends of the base 1 and the seat frame 2 is guaranteed.

[0037] As Figure 5 shown, in this embodiment, the adapter plate 6a of the rotating member 6 is rotatably installed inside the base through a pin shaft 15. The center line of the pin shaft 15 here is also the above-mentioned second fulcrum. The center line of the rear cross tube 6b is also the above-mentioned first fulcrum.

[0038] As Figure 5As shown, the high-profile drive mechanism 7 includes a motor 7a. A lead screw 7b is sleeved on the output end of the motor 7a. In this embodiment, the lead screw 7b is arranged in the front-back direction of the seat. A slider 7c is threadedly assembled on the lead screw 7b. The outer end of the slider 7c is fixedly installed with a connecting bracket 7e. One end of the connecting bracket 7e away from the motor 7a is rotatably connected to the adapter plate 6a. The adapter plate 6a is provided with an extension 6a3 extending in the direction of the motor 7a. The connecting bracket 7e is rotatably connected to the extension 6a3, and the installation position is located at the front end of the second fulcrum. With such a design, when the motor 7a drives the slider 7c to move axially along the lead screw 7b, it can force the adapter plate 6a to rotate relative to the base 1 with the second fulcrum as the rotation center. And through the design of the connecting bracket 7e and the extension 6a1, it can reduce the overall length of the lead screw 7b while ensuring that the rotating component 6 has a sufficient rotation stroke.

[0039] In addition, support guide holes 1a are formed on both the left and right sides of the base 1. Guide rods 7d are formed on both connecting brackets 7e. The guide rods 7d are all arranged inside the support guide holes 1a. With such a design, during the operation of the high-profile drive mechanism 7, the support stability at this place can be improved, and thus the overall strength of the seat can be enhanced.

[0040] Furthermore, in this embodiment, the motor 7a is rotatably arranged at the middle position of the base 1, and the support guide hole 1a is also configured as an arc-shaped structure. With such a design, it can adapt to the arc-shaped movement trajectory of the slider 7c and avoid movement interference between the guide rod 7d and the support guide hole 1a. In addition, as Figure 9 shown, an avoidance hole 1a1 that is recessed upward is formed on the upper side of the support guide hole 1a. When the seat frame 2 is adjusted to the highest position and a collision-like traffic accident occurs, the impact force will be applied to the lead screw 7b, causing the lead screw 7b to bend and deform. Since the avoidance hole 1a1 is designed on the upper side, the impact force received by the lead screw 7b can drive the outer guide rod 7d to slide into the avoidance hole 1a1, indirectly forming a stable support for the lead screw 7b, thereby avoiding the impact deformation or bending of the lead screw 7b during the collision.

[0041] As Figures 2 to 3 shown, there are two groups of lower connecting pieces 4 and upper connecting pieces 5. The two groups of lower connecting pieces 4 and upper connecting pieces 5 are symmetrically installed on both sides of the base 1 in the left-right direction. The two lower connecting pieces 4 are connected by a first synchronizing rod 8, and the two upper connecting pieces 5 are connected by a second synchronizing rod 9. The zero-gravity drive mechanism 10 is power-connected to the first synchronizing rod 8. In this embodiment, the zero-gravity drive mechanism 10 is an electric angle adjuster for driving the lower connecting piece 4 to rotate. Through the design of the two groups of lower connecting pieces 4 and upper connecting pieces 5, the front ends of the base 1 and the seat frame 2 can be stably installed, and the reclining angle adjustment of the seat frame 2 is realized through the zero-gravity drive mechanism 10.

[0042] Again, asFigure 8 As shown in the figure, on both sides of the front end of the base 1, there are first limiting parts 1b that are folded upwards. When the seat is in the folded state, the lower connecting piece 4 can abut against the first limiting parts 1b, so as to ensure that the overall structure is more stable when the seat is in the folded state.

[0043] Furthermore, as Figure 7 shown in the figure, on both sides of the front end of the base 1, there are second limiting parts 1c extending outwards. On one side surface of the lower connecting piece 4 close to the seat frame 2, there is a limiting protrusion 4a. When the seat is in the zero-gravity mode, the side part of the limiting protrusion 4a can abut against the second limiting parts 1c. With such a design, the rotation of the lower connecting piece 4 can be limited.

[0044] As Figure 10 shown in the figure, the seat backrest 3 and the seat frame 2 are also connected by an electric angle adjuster. With such a design, the seat backrest 3 can be adjusted backwards relative to the seat frame 2. A seat belt retractor 11 is also installed at the shoulder position of the seat backrest 3. With such a design, when the seat is in the zero-gravity mode, the seat belt can always restrain the occupant, thus ensuring the riding safety of the occupant.

[0045] As Figure 1 and Figure 11 shown in the figure, on both sides of the bottom of the base 1, there are also two slide rails 12 symmetrically installed by bolts. The bottom of the slide rails 12 is fixedly connected to the vehicle floor. The power connection between the two slide rails 12 is realized through a slide rail motor 13, so as to realize the front-back adjustment of the seat. At the front bottom of the seat frame 2, a leg rest assembly 14 is fixedly installed by bolts. In the folded state, the leg rest assembly 14 can be vertically folded in front of the seat frame 2, and in the zero-gravity mode, the bottom of the leg rest assembly 14 can be flipped forward and extended, so as to facilitate the placement of the occupant's calves.

[0046] Finally, it should be noted that the above description is only the preferred embodiment of the present utility model. Those of ordinary skill in the art, under the inspiration of the present utility model and without departing from the purpose and claims of the present utility model, can make various similar representations. Such transformations all fall within the protection scope of the present utility model.

Claims

1. A zero-gravity seat with a seat cushion having a high-profile function, comprising a base (1), a seat frame (2) is provided above the base (1), a seat backrest (3) is rotatably installed at the rear end of the seat frame (2), the front end of the base (1) is rotatably connected to a lower connecting piece (4), the front end of the seat frame (2) is rotatably connected to an upper connecting piece (5), and the lower connecting piece (4) and the upper connecting piece (5) are hinged to each other, characterized in that: A rotating member (6) is provided between the rear part of the base (1) and the rear part of the seat frame (2). The rotating member (6) has a first fulcrum rotatably connected to the rear end of the seat frame (2) and a second fulcrum rotatably connected to the base (1). A zero-gravity driving mechanism (10) and a high-profile driving mechanism (7) are installed on the base (1). The zero-gravity driving mechanism (10) is used to drive the lower connecting piece (4) to rotate relative to the base (1), and the high-profile driving mechanism (7) is used to drive the rotating member (6) to rotate relative to the base (1) with the second fulcrum as the rotation center.

2. The zero-gravity seat with a seat cushion having a high-profile function according to claim 1, wherein: The rotating member (6) includes a rear cross tube (6b) and two groups of adapter plates (6a) fixedly connected to both ends of the rear cross tube (6b). Both ends of the rear cross tube (6b) are rotatably sleeved on the rear part of the seat frame (2), and the middle parts of the two groups of adapter plates (6a) are respectively rotatably installed on both sides inside the base (1). There are two groups of the high-profile driving mechanisms (7), which are respectively used to drive the two groups of adapter plates (6a) to rotate.

3. The zero-gravity seat with a seat cushion having a high-profile function according to claim 2, wherein: The rear end of the adapter plate (6a) is provided with an arc section (6a1) adapted to the contour of the rear cross tube (6b), and a support portion (6a2) extending backward from the lower end of the arc section (6a1). Both the arc section (6a1) and the support portion (6a2) are welded to the rear cross tube (6b).

4. The zero-gravity seat with a seat cushion having a high-profile function according to claim 2, characterized in that: The high-profile driving mechanism (7) includes a motor (7a) and a lead screw (7b) driven by the motor (7a) to rotate. The base of the motor (7a) is rotatably arranged at the middle position of the base (1). A slider (7c) is threadedly assembled on the lead screw (7b), and one end of the slider (7c) away from the motor (7a) is rotatably connected to the adapter plate (6a).

5. The zero-gravity seat with a seat cushion having a high-profile function according to claim 4, wherein: A support guiding hole (1a) is provided on the side of the base (1). A guiding rod (7d) protruding outward is provided on the slider (7c), and the guiding rod (7d) is slidably supported in the support guiding hole (1a).

6. The zero-gravity seat with a seat cushion having a high-profile function according to claim 5, characterized in that: The support guiding hole (1a) is an arc-shaped hole, and an avoidance groove (1a1) recessed upward is provided on the upper side of the arc-shaped hole.

7. The zero-gravity seat with a seat cushion having a high-profile function according to claim 5, characterized in that: A connecting bracket (7e) is provided on the slider (7c), the guiding rod (7d) is arranged on the connecting bracket (7e), an extension portion (6a3) extending in the direction of the motor (7a) is provided on the adapter plate (6a), and the connecting bracket (7e) is rotatably connected to the extension portion (6a3), and the installation position is located at the front end of the second fulcrum.

8. The zero-gravity seat with a seat cushion having a high-profile function according to claim 1, characterized in that: There are two groups of both the lower connecting pieces (4) and the upper connecting pieces (5). The two groups of lower connecting pieces (4) and upper connecting pieces (5) are symmetrically arranged on both sides of the base (1) left and right. The two lower connecting pieces (4) are connected by a first synchronizing rod (8), and the two upper connecting pieces (5) are connected by a second synchronizing rod (9). The zero-gravity driving mechanism (10) is an electric angle adjuster for driving the lower connecting piece (4) to rotate.

9. The zero-gravity seat with a seat cushion having a high-profile function according to claim 8, characterized in that: First limiting portions (1b) are turned up on both sides of the front end of the base (1). When the seat is in the folded state, the lower connecting piece (4) can abut against the first limiting portions (1b). On both sides of the front end of the base (1), there are second limiting parts (1c) extending outwards. On one side surface of the lower connecting piece (4) close to the seat frame (2), there is a limiting protrusion (4a). When the seat is in the zero-gravity mode, the side part of the limiting protrusion (4a) abuts against the second limiting part (1c).

10. The zero-gravity seat with a seat cushion having a high-profile function according to claim 1, characterized in that: A seat belt retractor (13) is provided at the shoulder position of the seat backrest (3).

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