Rear lifting mechanism of cushion electric multi-connecting-rod mechanism and seat thereof

Abstract

The utility model relates to a rear lifting mechanism of a cushion electric multi-connecting-rod mechanism and a seat of the cushion electric multi-connecting-rod mechanism, and the rear lifting mechanism comprises a seat frame supporting bracket fixed on the inner side of a cushion side plate, and a first rotating shaft fixed on the seat frame supporting bracket, the first lifting connecting rods are installed on the first rotating shaft and rotate relative to the first rotating shaft, the lifting transverse pipe is close to the rear ends of the first lifting connecting rods and arranged between the two first lifting connecting rods, the second lifting connecting rods are close to the two sides of the lifting transverse pipe and rotationally connected with the lifting transverse pipe, and the third lifting connecting rods are hinged to the second lifting connecting rods. The fourth lifting connecting rod is hinged with the third lifting connecting rod; the motor is fixed at the bottom of the cushion, fixedly connected with the front end of the first lifting connecting rod and used for driving the first lifting connecting rod; wherein the fourth lifting connecting rod is fixed on the rear transverse pipe between the cushion side plates, and a suspension spring body is arranged between the lifting transverse pipe and the front transverse pipe between the cushion side plates; according to the mechanism, the angle of the cushion can be adjusted more flexibly and accurately, and the requirements for individuation and comfort are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and relates to a rear lifting mechanism of an electric multi-link mechanism of a seat cushion and a seat thereof. Background Art

[0002] With the continuous advancement of automobile technology, consumers have higher and higher requirements for the comfort and personalization of car seats. Especially during long-distance driving, the appropriateness of the seat angle is directly related to the passenger comfort and driving safety.

[0003] Chinese patent CN 114734893 A discloses a "vehicle seat" in which a backrest module and a lumbar support device are linked to achieve simple angle adjustment and linked adjustment of the seat back; however, the seat back posture angle of the seat is single and cannot meet the riding needs of different passengers.

[0004] Chinese patent CN 116279017 A discloses "seat cushion lifting mechanism, seat and vehicle". The seat cushion lifting mechanism can be linked with the electric backrest. The cable pulls the rear part of the seat cushion up by using the pulling force of the electric backrest falling backward. However, the mechanism still has defects such as poor accuracy of seat cushion angle adjustment, poor riding stability and reliability of single-axis drive, etc.

[0005] It can be seen that for passengers of different body shapes and driving habits, the existing seat cushion adjustment method is difficult to meet the needs of personalization and comfort. Therefore, developing a new type of electric multi-link rear lifting mechanism to provide more flexible and precise seat cushion angle adjustment has important practical significance and broad market prospects. Utility Model Content

[0006] In view of the above-mentioned technical problems and shortcomings, the purpose of the utility model is to provide a rear lifting mechanism of an electric multi-link mechanism for a seat cushion. The rear lifting mechanism has a simple structure, can control the angle adjustment of the seat cushion independently, and can also control the angle of the backrest and the seat cushion at the same time through a control module to achieve a linkage effect. It can be seen that the use of this mechanism can provide more flexible and precise seat cushion angle adjustment to meet the needs of personalization and comfort.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A rear lifting mechanism of an electric multi-link mechanism for a seat cushion, comprising a seat frame supporting bracket fixed to the inner side of a seat cushion side panel, a first rotating shaft fixed to the seat frame supporting bracket, a first lifting link installed on the first rotating shaft and rotating relative to the first rotating shaft, a lifting cross tube arranged between two first lifting links near the rear end of the first lifting link, a second lifting link rotatably connected to the lifting cross tube near both sides of the lifting cross tube, a third lifting link hinged to the second lifting link, a fourth lifting link hinged to the third lifting link, and a motor fixed to the bottom of the seat cushion and fixedly connected to the front end of the first lifting link for driving the first lifting link; wherein the fourth lifting link is fixed to the rear cross tube between the two seat cushion side panels, and a suspension spring body is provided between the lifting cross tube and a front cross tube arranged between the seat cushion side panels.

[0009] As a preferred embodiment of the utility model, the first rotating shaft is arranged close to the middle of the seat frame support bracket, so that a certain distance is reserved between the first lifting link and the front cross tube; the motor is a screw motor, and the end of the screw rod of the screw motor is fixed to the lower front end of the first lifting link through a connecting block.

[0010] As a preferred embodiment of the utility model, the suspension spring body includes a plurality of suspension springs arranged at intervals, and the plurality of suspension springs arranged at intervals are connected into a whole by an injection-molded connecting belt. Both ends of the suspension spring are provided with hooks, one end is hung on the front cross tube, and the other end is hung on the lifting cross tube.

[0011] As a preferred embodiment of the utility model, an assembly part is provided on the lifting cross tube near the two sides, the assembly part is provided with an annular assembly groove, a bushing is provided in the annular assembly groove, the front end of the second lifting link is installed on the bushing and rotates relative to the bushing, the rear end of the second lifting link is connected to the front end of the third lifting link through the second rotating shaft, the rear end of the third lifting link is connected to the lower end of the fourth lifting link through the third rotating shaft, and the upper end of the fourth lifting link is fixed to the rear cross tube by welding.

[0012] As a preferred embodiment of the present invention, the lifting cross tube and the assembly portion are an integrally extruded structure, and both ends of the lifting cross tube are welded to two first lifting connecting rods.

[0013] The utility model also provides a seat, on the seat cushion of which the rear lifting mechanism is installed.

[0014] As a preferred embodiment of the present invention, the seat backrest is adjusted in angle by a recliner driven by a motor. The seat is also provided with a controller for controlling the action of the motor on the rear lifting mechanism and the motor for adjusting the backrest angle to achieve a linkage effect between the backrest and the seat cushion.

[0015] As a preferred embodiment of the present invention, a sensor is further provided on the seat, and the sensor is used to monitor the position and state of the seat cushion in real time and send a monitoring signal to the controller.

[0016] Advantages and beneficial effects of the utility model:

[0017] (1) The rear lifting mechanism provided by the utility model has a simple structure and can independently control the angle adjustment of the seat cushion, or simultaneously control the angle of the backrest and the seat cushion through a control module (controller) to achieve a linkage effect; therefore, the use of this mechanism can provide more flexible and precise seat cushion angle adjustment to meet the needs of personalization and comfort.

[0018] (2) The rear lifting mechanism provided by the utility model adopts electric drive, and drives the multi-link mechanism to move by controlling the forward and reverse rotation of the motor, thereby changing the rear angle of the seat cushion. It has the characteristics of rapid response and can quickly complete the lifting action of the seat cushion.

[0019] (3) The rear lifting mechanism provided by the utility model is safe and reliable, and the design of the multi-link mechanism ensures the stability and reliability of the seat cushion during the lifting process, avoiding interference to passengers and safety hazards.

[0020] (4) The seat provided by the utility model can monitor the position and status of the seat cushion in real time through sensors, and then the controller can automatically adjust the seat cushion angle according to the needs of the passengers. The adjustment process is simple and convenient. In addition, the cooperation of the electric drive and the multi-link mechanism can realize the precise adjustment of the seat cushion angle to meet the personalized needs of different passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the rear lifting mechanism of the utility model (rear lifting state);

[0023] Figure 2 This is a schematic diagram of the overall structure of the rear lifting mechanism of the utility model (normal state);

[0024] Figure 3 It is a top view of the rear lifting mechanism of the utility model;

[0025] Figure 4 For this utility model Figure 3 Section along AA (post-lift state);

[0026] Figure 5 For this utility model Figure 3 Section along AA (normal state);

[0027] Figure 6 This is an axonometric view of the seat with the rear lifting mechanism installed in the utility model (lying flat at a large angle);

[0028] Figure 7 This is an axonometric view of the seat with the rear lifting mechanism installed in the utility model (normal state);

[0029] Figure numerals: seat cushion side panel 1, seat frame supporting bracket 2, first lifting link 3, second lifting link 4, third lifting link 5, fourth lifting link 6, first rotating shaft 7, second rotating shaft 8, third rotating shaft 9, lifting cross tube 10, motor 11, rear cross tube 12, front cross tube 13, suspension spring body 14, assembly part 101, suspension spring 141. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper end", "lower end", etc. is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] like Figures 1 to 5As shown, the present embodiment provides a rear lifting mechanism of an electric multi-link mechanism for a seat cushion, comprising a seat frame support bracket 2 fixed to the inner side of a seat cushion side panel 1, a first rotating shaft 7 fixed to the seat frame support bracket 2, a first lifting link 3 installed on the first rotating shaft 7 and rotating relative to the first rotating shaft, a lifting cross tube 10 arranged between the two first lifting links 3 near the rear end of the first lifting link 3, a second lifting link 4 rotatably connected to the lifting cross tube 10 near both sides of the lifting cross tube 10, a third lifting link 5 hinged to the second lifting link 4, a fourth lifting link 6 hinged to the third lifting link 5, and a motor 11 fixed to the bottom of the seat cushion and fixedly connected to the front end of the first lifting link 3 for driving the first lifting link 3; wherein, the fourth lifting link 6 is fixed to the rear cross tube 12 between the two seat cushion side panels 1, and a suspension spring body 14 is provided between the lifting cross tube 10 and the front cross tube 13 arranged between the seat cushion side panels 1.

[0034] In this embodiment, the motor 11 of the rear lifting mechanism is responsible for providing power and controlling the lifting of the seat cushion. The motor 11 drives the first lifting link 3, and the multi-link mechanism cooperates to achieve precise adjustment of the seat cushion angle.

[0035] Further, if Figures 1 to 5 As shown, in this embodiment, the first rotating shaft 7 is arranged close to the middle of the seat frame support bracket 2, so that a certain distance is reserved between the first lifting link 3 and the front cross tube 13; the motor 11 is a screw motor, and the end of the screw rod of the screw motor is fixed to the lower front end of the first lifting link 3 through a connecting block (not marked).

[0036] The suspension spring body 14 includes a plurality of suspension springs 141 arranged at intervals, which are connected into a whole by an injection-molded connecting belt (not marked). Both ends of the suspension spring 141 are provided with hooks, one end is hung on the front cross tube 13, and the other end is hung on the lifting cross tube 10.

[0037] Further, if Figures 1 to 5 As shown, in this embodiment, an assembly portion 101 is provided on the lifting cross tube 10 at a position close to both sides, and an annular assembly groove is provided on the assembly portion. A bushing (not marked) is provided in the annular assembly groove, and the front end of the second lifting link 4 is installed on the bushing and rotates relative to the bushing. The rear end of the second lifting link 4 is connected to the front end of the third lifting link 5 through the second rotating shaft 8, and the rear end of the third lifting link 5 is connected to the lower end of the fourth lifting link 6 through the third rotating shaft 9. The upper end of the fourth lifting link 6 is fixed to the rear cross tube 12 by welding.

[0038] Further, if Figures 1 to 5 As shown, in this embodiment, the lifting cross tube 10 and the assembly portion 101 are an integrally extruded structure, and both ends of the lifting cross tube 10 are welded to the two first lifting connecting rods 3 .

[0039] like Figure 6 , Figure 7 As shown, the utility model also provides a seat, the above-mentioned rear lifting mechanism is installed on the seat cushion of the seat, the backrest of the seat is adjusted in angle by a recliner, the recliner is driven by a motor, and a controller is also provided on the seat, the controller is used to control the action of the motor on the rear lifting mechanism and the motor for adjusting the angle of the backrest, so as to achieve a linkage effect between the backrest and the seat cushion.

[0040] Furthermore, in this embodiment, a sensor (not shown) is also provided on the seat, and the sensor is used to monitor the position and status of the seat cushion in real time and send the monitoring signal to the controller, and the controller automatically adjusts the seat cushion angle according to the needs of the passengers.

[0041] It should be noted that in this embodiment, the angle adjustment of the seat backrest by a recliner is a prior art, and those skilled in the art can directly use the existing motor-driven recliner to install the backrest.

[0042] The above are specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rear lifting mechanism of a seat cushion electric multi-link mechanism, characterized in that: Including seat fixed to the inner side of the seat cushion side panel a frame support bracket, a first rotating shaft fixed to the seat frame support bracket, and a second rotating shaft installed on the first rotating shaft and rotating relative to the first rotating shaft. a lifting connecting rod, a lifting cross pipe disposed between the two first lifting connecting rods near the rear end of the first lifting connecting rod, and a lifting cross pipe disposed between the two first lifting connecting rods near the rear end of the first lifting connecting rod. The second lifting link rotatably connected to the lifting cross tube on both sides of the tube, the third lifting link hinged to the second lifting link, and the third lifting link hinged to the third lifting link The fourth lifting link hinged to the lifting link is fixed at the bottom of the seat cushion and is connected to the front end of the first lifting link to drive the first lifting link. wherein the fourth lifting connecting rod is fixed on the rear cross tube between the two seat cushion side plates, and the lifting cross tube A suspension spring body is arranged between the front transverse pipe arranged between the seat cushion side plates.

2. The rear lifting mechanism of the electric multi-link mechanism of the seat cushion according to claim 1, characterized in that: The first rotating shaft is arranged near the middle of the seat frame support bracket, so that a distance is reserved between the first lifting link and the front cross tube; the motor is a screw motor, and the end of the screw rod of the screw motor is fixed to the lower front end of the first lifting link through a connecting block.

3. The rear lifting mechanism of the electric multi-link mechanism of the seat cushion according to claim 1, characterized in that: The hanging The spring body includes a plurality of suspension springs arranged at intervals, and the plurality of suspension springs arranged at intervals are connected to form a spring by injection molding connecting belts. As a whole, hooks are provided at both ends of the suspension spring, one end is hung on the front cross tube, and the other end is hung on the lifting cross tube.

4. The rear lifting mechanism of the electric multi-link mechanism of the seat cushion according to claim 1, characterized in that: The lift The ascending cross pipe is provided with a mounting portion near both sides, and the mounting portion is provided with an annular mounting groove. A bushing is provided, the front end of the second lifting link is mounted on the bushing and rotates relative to the bushing, and the rear end of the second lifting link is The second rotating shaft is connected to the front end of the third lifting connecting rod, and the rear end of the third lifting connecting rod is connected to the fourth lifting connecting rod through the third rotating shaft. The lower end of the fourth lifting link is connected to the rear cross tube by welding.

5. The rear lifting mechanism of the electric multi-link mechanism of the seat cushion according to claim 4, characterized in that: The lift The lifting cross tube and the assembly part are an integrally extruded structure, and two ends of the lifting cross tube are welded to two first lifting connecting rods.

6. A seat, characterized in that: The rear lift described in any one of claims 1 to 5 is installed on the seat cushion of the seat. Lifting mechanism.

7. A seat according to claim 6, characterized in that: The backrest of the seat can be adjusted by an angle adjuster. The angle adjuster is driven by a motor, and the seat is also provided with a controller for controlling the angle of the rear lifting mechanism. Motor action for the adjustment of the backrest angle.

8. A seat according to claim 7, characterized in that: The seat is also provided with a sensor. The sensor is used to monitor the position and status of the seat cushion in real time and send the monitoring signal to the controller.

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