Cushion lifting mechanism for automobile seat and automobile seat

Abstract

The utility model relates to the technical field of automobile seats, and discloses a cushion lifting mechanism for an automobile seat and the automobile seat, the cushion lifting mechanism comprises a bottom frame, a first connecting support, a second connecting support and a lifting support, one end of the first connecting support is rotatably arranged on the bottom frame, and the other end of the first connecting support is rotatably arranged on the lifting support; the lifting support, the first connecting support, the second connecting support and the bottom frame form a four-connecting-rod mechanism. The cushion can be arranged on the lifting bracket; the driving piece is installed on the lifting support, a telescopic shaft is arranged on the driving piece, and the telescopic shaft is rotationally connected with the second connecting support; the driving piece can drive the second connecting support to rotate so that the lifting support can ascend and descend. The seat cushion lifting mechanism has the advantages that the seat cushion lifting mechanism is simple in structure and low in cost; the rigidity of the driving side and the driven side is good, and the lifting synchronism of the left and right sides of the cushion can be improved; the installation space close to the cushion can be fully utilized, the installation space at the bottom is released, and the space utilization rate is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a cushion lifting mechanism for automobile seats and the automobile seat. Background Art

[0002] Users have higher and higher requirements for the comfort and functionality of car seats. Many car companies pay much attention to the entertainment space in the car, and set the car seats to be able to be folded flat at a large angle. For the car seats in the front passenger position, many will set the backrest to be able to be folded forward, and drive the seat cushion to sink through the seat cushion lifting mechanism, so that the backrest and the second row of car seats form a large bed mode, providing a more comfortable leisure and entertainment space.

[0003] In existing car seats, the seat cushion lifting mechanism mainly includes the following types: the slide type, which uses dual motors on the left and right sides of the seat frame to ensure the synchronization of the left and right sides, but its cost is high and the structure is complex; the concentric angle adjuster adjustment type, by arranging concentric angle adjusters on both sides of the rear tube of the seat cushion, arranging motors on the rear plate of the seat cushion to drive the rear tube of the seat cushion to rotate, which is also expensive; the screw push-pull type, although its structure is simple, but the driving side and the driven side lack the added rigidity structure, resulting in poor synchronization between the left and right sides. In addition, the motor occupies the space at the bottom of the seat cushion, which is easy to affect the installation of other components. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a seat cushion lifting mechanism and a car seat for a car seat which have a simple structure, high seat cushion bottom space utilization, good lifting and lowering adjustment synchronization, and low cost.

[0005] The utility model solves the technical problem by adopting a technical solution of providing a seat cushion lifting mechanism for a car seat, comprising:

[0006] A base frame, a first connecting bracket, a second connecting bracket and a lifting bracket, wherein one end of the first connecting bracket is rotatably arranged on the base frame, and the other end of the first connecting bracket is rotatably connected to the lifting bracket; the second connecting bracket is rotatably arranged on the base frame, and the second connecting bracket is rotatably connected to the lifting bracket, and the lifting bracket, the first connecting bracket, the second connecting bracket and the base frame form a four-bar linkage; a seat cushion can be arranged on the lifting bracket;

[0007] A driving member is installed on the lifting bracket, and the driving member has a telescopic shaft, and the telescopic shaft is rotatably connected to the second connecting bracket; the driving member can drive the second connecting bracket to rotate to make the lifting bracket move up and down.

[0008] Furthermore, a second connecting bracket is connected along the left and right sides of the lifting bracket, and a horizontal pipe is fixedly connected between the two second connecting brackets;

[0009] The two second connecting brackets are rotatably mounted on the base frame through the transverse tube.

[0010] Furthermore, both ends of the transverse tube are rotatably connected to the base frame.

[0011] Furthermore, the lifting bracket has a mounting portion, the driving member is rotatably mounted on the mounting portion, and the driving member can move up and down along with the lifting bracket.

[0012] Further, the lifting bracket includes a left frame, a right frame, a front tube and a rear tube, the left frame and the right frame are arranged at intervals, the two ends of the front tube are respectively connected to the front ends of the left frame and the right frame, and the two ends of the rear tube are respectively connected to the rear ends of the left frame and the right frame;

[0013] One of the second connecting brackets is rotatably connected to the left frame, and another of the second connecting brackets is rotatably connected to the right frame.

[0014] Furthermore, the rear tube and the cross tube are arranged in parallel.

[0015] Furthermore, the left frame and the right frame are symmetrically connected with a first connecting bracket respectively.

[0016] Furthermore, the driving member is a screw motor.

[0017] Furthermore, the base frame includes a front frame body and a rear frame body which are separately arranged, the first connecting bracket is rotatably arranged on the front frame body, and the second connecting bracket is rotatably arranged on the rear frame body.

[0018] The utility model solves the technical problem by adopting a technical solution that further provides a car seat, comprising the above-mentioned seat cushion lifting mechanism for the car seat.

[0019] Compared with the prior art, the utility model has at least the following beneficial effects:

[0020] In the utility model, the two ends of the first connecting bracket and the two ends of the second connecting bracket are rotatably connected to the base frame and the lifting bracket respectively, and the base frame, the first connecting bracket, the second connecting bracket and the lifting bracket form a four-bar linkage. The driving member (i.e., the motor) is arranged on the lifting bracket, and is rotatably connected to the second connecting bracket. The driving member can make the lifting bracket move up and down by driving the second connecting bracket, thereby realizing the lifting movement of the seat cushion. When the backrest of the car seat is folded forward, the lifting mechanism can make the seat cushion drop so that the backrest is flush with the seat cushion of the rear seat to form a large bed mode. The driving member is movably arranged on the lifting bracket and moves with the movement of the lifting bracket, so that the installation space near the seat cushion can be fully utilized, and the installation space at the bottom can be released, and the space utilization rate is high. In addition, the two second connecting brackets are connected by a transverse tube, and the left and right frames of the lifting bracket are connected by a rear tube, which can ensure good synchronization of the left and right sides when the seat cushion is lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the seat cushion lifting mechanism of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0023] Figure 3 for Figure 1 Schematic diagram of the structure after removing the drive components.

[0024] In the figure:

[0025] 1. bottom frame; 11. first frame body; 12. second frame body;

[0026] 2. A first connecting bracket;

[0027] 3. Second connecting bracket; 30. Transverse tube;

[0028] 4. Lifting bracket; 40. Mounting part; 41. Left frame; 42. Right frame; 43. Front tube; 44. Rear tube;

[0029] 5. Driving member; 50. Telescopic shaft. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] like Figure 1-Figure 3 As shown, a cushion lifting mechanism for a car seat mainly includes: a base frame 1, a first connecting bracket 2, a second connecting bracket 3, a lifting bracket 4 and a driving member 5. One end of the first connecting bracket 2 is rotatably arranged on the base frame 1, and the other end of the first connecting bracket 2 is rotatably connected to the lifting bracket 4. The second connecting bracket 3 is rotatably arranged on the base frame 1, and the second connecting bracket 3 is rotatably connected to the lifting bracket 4. The lifting bracket 4, the first connecting bracket 2, the second connecting bracket 3 and the base frame 1 form a four-bar linkage. The seat cushion can be arranged on the lifting bracket 4. The driving member 5 is installed on the lifting bracket 4, and the driving member 5 has a telescopic shaft 50, and the telescopic shaft 50 is rotatably connected to the second connecting bracket 3. In this embodiment, the driving member 5 is preferably but not limited to a screw motor, and the screw motor has a screw, which can drive its own telescopic shaft 50 to telescopic movement. In actual use, the driving member 5 can drive the second connecting bracket 3 to rotate through the telescopic shaft 50, so that the lifting bracket 4 moves up and down, and the seat cushion is arranged on the lifting bracket 4, so the seat cushion will move up and down with the lifting and lowering movement of the lifting bracket 4. Specifically, when the motor drives the telescopic shaft 50 to extend, the lifting bracket 4 moves downward, and the seat cushion also moves downward accordingly.

[0036] Specifically, the lifting bracket 4 of this embodiment includes a left frame 41, a right frame 42, a front tube 43 and a rear tube 44. The left frame 41 and the right frame 42 are arranged at intervals. The two ends of the front tube 43 are respectively fixedly connected to the front ends of the left frame 41 and the right frame 42, and the two ends of the rear tube 44 are respectively fixedly connected to the rear ends of the left frame 41 and the right frame 42, so as to ensure the overall rigidity of the lifting bracket 4. A mounting portion 40 is provided on the front tube 43 of the lifting bracket 4. The mounting portion 40 is a motor mounting bracket. The driving member 5 is rotatably mounted on the mounting portion 40, and the driving member 5 can move up and down with the lifting bracket 4. In this embodiment, the driving member 5 is movably arranged on the lifting bracket 4 and moves with the movement of the lifting bracket 4, so that the installation space close to the seat cushion can be fully utilized, and the installation space at the bottom is released, and the space utilization rate is high.

[0037] More specifically, in this embodiment, a second connecting bracket 3 is connected along the left and right sides of the lifting bracket 4, and a transverse tube 30 is fixedly connected between the two second connecting brackets 3. The two second connecting brackets 3 are rotatably mounted on the base frame 1 through the transverse tube 30, and both ends of the transverse tube 30 are rotatably connected to the second frame body 12 in the base frame 1. Among them, one second connecting bracket 3 is rotatably connected to the left frame body 41, and the other second connecting bracket 3 is rotatably connected to the right frame body 42. Similarly, there are two first connecting brackets 2 in this embodiment, and a first connecting bracket 2 is symmetrically connected to the left frame body 41 and the right frame body 42. In actual use, the two second connecting brackets 3 of this embodiment are connected by the transverse tube 30, and the left and right frames 42 of the lifting bracket 4 are connected by the rear tube 44, which can ensure good synchronization of the left and right sides when the seat cushion is raised and lowered, and there is no need to use a dual motor drive. Among them, the front tube 43, the rear tube 44 and the transverse tube 30 are all arranged in parallel.

[0038] The base frame 1 of this embodiment includes a front frame body and a rear frame body which are separately arranged. The first connecting bracket 2 is rotatably arranged on the front frame body, and the second connecting bracket 3 is rotatably arranged on the rear frame body. There are two front frames symmetrically arranged on the left and right, and there are two rear frames symmetrically arranged on the left and right. The front frame body and the rear frame body on the left are both fixedly connected to a fixed frame, and the front frame body and the rear frame body on the right are both fixedly connected to another fixed frame.

[0039] In actual use, the two ends of the first connecting bracket 2 and the two ends of the second connecting bracket 3 of this embodiment are rotatably connected to the base frame 1 and the lifting bracket 4 respectively, and the base frame 1, the first connecting bracket 2, the second connecting bracket 3 and the lifting bracket 4 form a four-bar linkage. The driving member 5 (i.e., the motor) is arranged on the lifting bracket 4, and is rotatably connected to the second connecting bracket 3. The driving member 5 drives the second connecting bracket 3 to make the lifting bracket 4 move up and down, thereby realizing the lifting movement of the seat cushion. When the backrest of the car seat is folded forward, the lifting mechanism can lower the seat cushion so that the backrest is flush with the seat cushion of the rear seat, forming a large bed mode.

[0040] In this solution, the overall structure of the seat cushion lifting mechanism is simple and low in cost; the driving side and the driven side have good rigidity, which can improve the lifting synchronization of the left and right sides of the seat cushion; the installation space close to the seat cushion can be fully utilized, freeing up the installation space at the bottom, and the space utilization rate is high.

Claims

1. A cushion lifting mechanism for a car seat, characterized in that: include: A base frame, a first connecting bracket, a second connecting bracket and a lifting bracket, wherein one end of the first connecting bracket is rotatably arranged on the base frame, and the other end of the first connecting bracket is rotatably connected to the lifting bracket; the second connecting bracket is rotatably arranged on the base frame, and the second connecting bracket is rotatably connected to the lifting bracket, and the lifting bracket, the first connecting bracket, the second connecting bracket and the base frame form a four-bar linkage; The seat cushion can be arranged on the lifting bracket; A driving member is installed on the lifting bracket, and the driving member has a telescopic shaft, and the telescopic shaft is rotatably connected to the second connecting bracket; the driving member can drive the second connecting bracket to rotate to make the lifting bracket move up and down.

2. The seat cushion lifting mechanism for a car seat according to claim 1, characterized in that: A second connecting bracket is connected along the left and right sides of the lifting bracket, and a horizontal pipe is fixedly connected between the two second connecting brackets; The two second connecting brackets are rotatably mounted on the base frame through the transverse tube.

3. The seat cushion lifting mechanism for a car seat according to claim 2, characterized in that: Both ends of the transverse tube are rotatably connected to the base frame.

4. The seat cushion lifting mechanism for a car seat according to claim 1, characterized in that: The lifting bracket is provided with a mounting portion, the driving member is rotatably mounted on the mounting portion, and the driving member can move up and down along with the lifting bracket.

5. The seat cushion lifting mechanism for a car seat according to claim 2 or 3, characterized in that: The lifting bracket includes a left frame, a right frame, a front tube and a rear tube, wherein the left frame and the right frame are arranged at intervals, the two ends of the front tube are respectively connected to the front ends of the left frame and the right frame, and the two ends of the rear tube are respectively connected to the rear ends of the left frame and the right frame; One of the second connecting brackets is rotatably connected to the left frame body, and another of the second connecting brackets is rotatably connected to the right frame body.

6. The seat cushion lifting mechanism for a car seat according to claim 5, characterized in that: The rear tube is arranged in parallel with the transverse tube.

7. The seat cushion lifting mechanism for a car seat according to claim 5, characterized in that: The left frame and the right frame are symmetrically connected with a first connecting bracket respectively.

8. The seat cushion lifting mechanism for a car seat according to claim 1, characterized in that: The driving member is a screw motor.

9. The seat cushion lifting mechanism for a car seat according to claim 1, characterized in that: The base frame includes a front frame body and a rear frame body which are separately arranged. The first connecting bracket is rotatably arranged on the front frame body, and the second connecting bracket is rotatably arranged on the rear frame body.

10. A car seat, characterized in that: It comprises a seat cushion lifting mechanism for a car seat as described in any one of claims 1 to 9.

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