Seat lift control

Abstract

The present invention discloses a seat lifting control mechanism, comprising a seat frame, the seat frame is mounted on an upper slide rail through a linkage mechanism, an actuator and a locking mechanism are arranged between the seat frame and the upper slide rail; wherein the locking mechanism is used to fix the seat frame on the upper slide rail; the actuator is used to control the unlocking of the locking mechanism, and drive the seat frame to move through the linkage mechanism, so that the rear end of the seat frame is lifted upward relative to the upper slide rail. The beneficial effect of the present invention is that the rear end of the seat frame can be automatically controlled to lift upward, so that the seat as a whole tilts forward, which significantly improves the convenience of passengers entering the back row, and is full of high-end feeling.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, and in particular to a seat lifting control mechanism. Background Art

[0002] Some SUVs and commercial vehicles usually have three rows of seats. To make it easier for passengers to get in and out of the rear seats, an adjustable seat is usually installed near the door in the second row of seats. The backrest of the seat can be folded forward and the seat can slide forward. Passengers need to adjust the backrest and seat forward at the same time when getting in and out of the rear seats. The adjustment process is mostly manual, with a slow adjustment speed and poor operating experience. After adjustment, the space for getting in and out is still very narrow, and the user experience is in urgent need of an upgrade. Summary of the invention

[0003] In view of this, the present invention provides a seat lifting control mechanism, which can automatically control the rear end of the seat frame to lift upward, so that the seat as a whole tilts forward, significantly improving the convenience of passengers entering the back row and giving a sense of luxury.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A seat lifting control mechanism, the key of which is: comprising a seat frame, the seat frame is mounted on an upper slide rail through a linkage mechanism, an actuator and a locking mechanism are provided between the seat frame and the upper slide rail;

[0006] The locking mechanism is used to fix the seat frame on the upper slide rail; the actuator is used to control the locking mechanism to unlock, and drive the seat frame to move through the linkage mechanism, so that the rear end of the seat frame is lifted upward relative to the upper slide rail.

[0007] With the above structure, under the drive of the actuator, the rear end of the seat frame can be lifted upward, causing the seat to tilt forward as a whole. Combined with the forward movement of the seat as a whole by the seat slide rail assembly, the space at the rear end of the seat can be fully freed up, making it extremely convenient for passengers to enter the back row.

[0008] Preferably, the linkage mechanism comprises a front link and a rear link, both ends of which are rotatably connected to the seat frame and the upper slide rail, respectively, and the front link, the rear link, the seat frame and the upper slide rail form a four-link mechanism. With the above structure, the actuator drives the front link to rotate around the upper slide rail, so that the rear end of the seat frame can be lifted upward relative to the upper slide rail.

[0009] Preferably, the actuator includes a front push rod and a rear screw rod that are threadedly connected, and a lifting motor that drives the rear screw rod to rotate. A transfer component is fixedly installed on the front connecting rod, and the front end of the front push rod is rotatably connected to the transfer component. A support is fixedly installed on the inner side of the upper slide rail, and the lifting motor is rotatably installed on the support. With the above structure, the lifting motor drives the rear screw rod to rotate, which can push the front push rod to move forward, thereby driving the front connecting rod to rotate around the upper slide rail through the transfer component, thereby driving the seat frame to lift.

[0010] Preferably, the locking mechanism comprises a locking tongue rotatably mounted on the inner side of the seat frame, and a locking hook fixedly mounted on the upper slide rail, wherein the locking tongue is provided with a locking groove matching the locking hook. With the above structure, when the seat is in normal use, the seat frame can be fixedly held on the upper slide rail.

[0011] Preferably, an unlocking piece is rotatably mounted on one side of the transfer component, one end of which is fixedly connected to the end of the front push rod via a connecting shaft, an unlocking groove that is slidably matched with the connecting shaft is provided on the transfer component, and a cable is connected between the unlocking piece and the lock tongue. With the above structure, when the actuator is just started, the front push rod moves forward to first drive the unlocking piece to rotate, forcing the cable to move, thereby driving the lock tongue to rotate, so that the lock groove on the lock tongue leaves the lock hook on the upper slide rail, thereby unlocking the seat frame.

[0012] As a preferred embodiment, the middle part of the unlocking piece is hinged to the transfer component, and the cable is connected to the end of the unlocking piece away from the connecting shaft. With the above structure, the movement of the cable can be controlled by rotating the unlocking piece.

[0013] As a preference, a housing is provided outside the lock tongue, the lock tongue can rotate inside the housing, and a detection sensor is provided on the housing. With the above structure, it is possible to identify whether the locking mechanism is in a locked state.

[0014] Preferably, the lock tongue is provided with a first protruding portion and a second protruding portion, and the housing is provided with a limiting portion located between the first protruding portion and the second protruding portion. The above structure is adopted to facilitate the control of the rotation range of the lock tongue.

[0015] Preferably, the upper end of the rear connecting rod is hinged to the rear end of the seat frame, and the lower end of the rear connecting rod is hinged to the middle of the upper slide rail. With the above structure, the effective lifting height of the rear end of the seat frame can be ensured.

[0016] Preferably, the front end of the seat frame is rotatably mounted with a first support shaft, the upper end of the front connecting rod is fixedly mounted on the first support shaft, the inner side of the front connecting rod is fixedly mounted with a second support shaft, and the end of the transfer component is fixedly connected to the second support shaft. The above structure is adopted to facilitate the layout and installation of components such as the front connecting rod, the transfer component, and the unlocking piece under the seat frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The rear end of the seat frame can be automatically lifted upward to tilt the seat forward as a whole. Combined with the forward movement of the seat as a whole by the seat slide assembly, the space at the rear end of the seat can be fully freed up, significantly improving the convenience for passengers to enter the back row.

[0019] 2. It can realize electric rapid adjustment, with good operating experience and a high-end feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a seat with a lifting control mechanism (seat frame folded state);

[0021] Figure 2 is a cross-sectional view of a seat with a lifting control mechanism (the backrest portion is not shown);

[0022] Figure 3 It is a structural schematic diagram of a seat with a lifting control mechanism (seat frame lifted state);

[0023] Figure 4 is a structural schematic diagram of a locking mechanism;

[0024] Figure 5 Schematic diagram of the structure of the upper slide rail;

[0025] Figure 6 It is a schematic diagram of the structure of the transfer component. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with embodiments and drawings.

[0027] The directions "front and rear" mentioned in the following embodiments refer to the front and rear ends of the car seat when it is actually used.

[0028] like Figure 1 and 2 As shown, a seat lifting control mechanism includes a seat frame 1 and an upper slide rail 2a, the seat frame 1 is installed on the upper slide rail 2a through a linkage mechanism 3, the linkage mechanism 3 includes a front link 3a and a rear link 3b, wherein both ends of the front link 3a are rotatably connected to the front of the seat frame 1 and the upper slide rail 2a, one end of the rear link 3b is rotatably connected to the rear of the seat frame 1, and the other end is rotatably connected to the middle of the upper slide rail 2a, the front link 3a, the rear link 3b, the seat frame 1 and the upper slide rail 2a constitute a four-bar linkage, and in an unlocked state, the seat frame 1 can move relative to the upper slide rail 2a.

[0029] Furthermore, Figure 4 and 5As shown, in order to ensure that the seat frame 1 can remain fixed relative to the upper slide rail 2a when the seat is in normal use, a locking mechanism 5 is provided between the seat frame 1 and the upper slide rail 2a. In this embodiment, the locking mechanism 5 is installed at the lower rear end of the seat frame 1. Specifically: the locking mechanism 5 includes a shell 5c fixedly installed on the seat frame 1, a lock tongue 5a is rotatably assembled in the shell 5c, and a lock hook 5b is fixedly installed on the upper slide rail 2a, wherein the lock tongue 5a is provided with a lock groove 5a1 matching the lock hook 5b. When the seat is in normal use, the lock hook 5b is located in the lock groove 5a1, and the seat frame 1 remains fixed relative to the upper slide rail 2a.

[0030] For example Figure 2 and 3 As shown, an actuator 4 is provided between the seat frame 1 and the upper slide rail 2a, and the actuator 4 includes a front push rod 4a and a rear screw rod 4b which are threadedly connected, and a lifting motor 4c which drives the rear screw rod 4b to rotate. A transfer component 4e is fixedly installed on the front connecting rod 3a, and the front end of the front push rod 4a is rotatably connected to the transfer component 4e. A support 4d is fixedly installed on the inner side of the upper slide rail 2a, and the lifting motor 4c is rotatably installed on the support 4d. When the above-mentioned locking mechanism 5 is unlocked, the lifting motor 4c drives the rear screw rod 4b to rotate, which can push the front push rod 4a to move forward, thereby driving the front connecting rod 3a to rotate around the upper slide rail 2a, that is, driving the seat frame 1 to move. During this movement, the rear end of the seat frame 1 will be lifted upward away from the upper slide rail 2a, so that the seat as a whole tilts forward.

[0031] After the lifting control mechanism is applied to the middle row of seats, the slide rail assembly 2 includes a lower slide rail 2b and the above-mentioned upper slide rail 2a, wherein the lower slide rail 2b is fixed on the vehicle body floor. When the passenger enters the rear row of seats, the lifting motor 4c causes the seat to tilt forward as a whole, and the slide rail assembly 2 causes the seat to move forward as a whole. Such a layout can fully free up the space at the rear end of the middle row of seats, making it extremely convenient for passengers to enter the back row.

[0032] like Figure 2 and 6As shown, when the rear end of the control seat frame 1 is lifted upward, in order to ensure that the locking mechanism 5 can be unlocked in time, an unlocking piece 6 is provided on the inner side of the transfer component 4e, and the middle part of the unlocking piece 6 is hinged with the transfer component 4e. The upper end of the unlocking piece 6 is fixedly connected to the end of the front push rod 4a through the connecting shaft 6a. The transfer component 4e is provided with an unlocking groove 4e1 that slidably cooperates with the connecting shaft 6a. The lower end of the unlocking piece 6 is connected with a cable 7, and the other end of the cable 7 extends to the position of the locking mechanism 5 and is connected to the lock tongue 5a. When the passenger needs to enter the rear seat, when the lifting motor 4c is just started, the front push rod 4a moves forward and first drives the connecting shaft 6a to move in the unlocking groove 4e1. During this process, the unlocking piece 6 will rotate and drive the cable 7 to move, thereby driving the lock tongue 5a to rotate, so that the lock groove 5a1 on the lock tongue 5a leaves the lock hook 5b on the upper slide rail 2a, and the seat frame 1 is unlocked. Then the actuator 4 moves further to drive the rear end of the seat frame 1 to lift upward.

[0033] After the actuator 4 drives the seat frame 1 to return, the lock hook 5b will be locked into the lock groove 5a1 on the lock tongue 5a again. In order to identify whether the locking mechanism 5 is successfully locked to ensure the safety of the seat, a detection sensor 8 is installed on the housing 5c, which can identify whether the locking mechanism 5 remains in the locked state. Further, in order to reasonably control the rotation range of the lock tongue 5a, the lock tongue 5a is provided with a first protrusion 5a2 and a second protrusion 5a3, and the housing 5c ​​is provided with a limit portion 5c1 located between the first protrusion 5a2 and the second protrusion 5a3.

[0034] like Figure 2 As shown, in the seat system, there are usually two groups of upper slide rails 2a, so there are also two groups of front connecting rods 3a and rear connecting rods 3b connected to the upper slide rails 2a. In order to facilitate the structural layout, the front end of the seat frame 1 is rotatably mounted with a first support shaft 1a, and the upper ends of the two groups of front connecting rods 3a are fixedly welded on the first support shaft 1a. A second support shaft 4f is fixedly assembled between the inner sides of the two groups of front connecting rods 3a, and the upper end of the transfer component 4e is fixedly connected to the second support shaft 4f.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A seat lifting control mechanism, characterized in that: The invention comprises a seat frame (1), wherein the seat frame (1) is mounted on an upper slide rail (2a) via a linkage mechanism (3), wherein the linkage mechanism (3) comprises a front connecting rod (3a) and a rear connecting rod (3b), wherein both ends of the front connecting rod (3a) and the rear connecting rod (3b) are rotatably connected to the seat frame (1) and the upper slide rail (2a), respectively, and the front connecting rod (3a), the rear connecting rod (3b), the seat frame (1) and the upper slide rail (2a) form a four-link mechanism; An actuator (4) and a locking mechanism (5) are provided between the seat frame (1) and the upper slide rail (2a), wherein the locking mechanism (5) is used to fix the seat frame (1) on the upper slide rail (2a); the actuator (4) is used to control the locking mechanism (5) to unlock, and to drive the seat frame (1) to move through the linkage mechanism (3), so that the rear end of the seat frame (1) is lifted upward relative to the upper slide rail (2a); The actuator (4) comprises a front push rod (4a) and a rear screw rod (4b) which are threadedly sleeved, and a lifting motor (4c) for driving the rear screw rod (4b) to rotate; a transfer component (4e) is fixedly mounted on the front connecting rod (3a); the front end of the front push rod (4a) is rotatably connected to the transfer component (4e); a support (4d) is fixedly mounted on the inner side of the upper slide rail (2a); and the lifting motor (4c) is rotatably mounted on the support (4d); The upper end of the rear connecting rod (3b) is hinged to the rear end of the seat frame (1), and the lower end of the rear connecting rod (3b) is hinged to the middle part of the upper slide rail (2a). The front end of the seat frame (1) is rotatably mounted with a first support shaft (1a). The upper end of the front connecting rod (3a) is fixedly mounted on the first support shaft (1a). The inner side of the front connecting rod (3a) is fixedly mounted with a second support shaft (4f), and the end of the transfer component (4e) is fixedly connected to the second support shaft (4f).

2. The seat lifting control mechanism according to claim 1, characterized in that: The locking mechanism (5) comprises a locking tongue (5a) rotatably mounted on the inner side of the seat frame (1), and a locking hook (5b) fixedly mounted on the upper slide rail (2a), wherein the locking tongue (5a) is provided with a locking groove (5a1) matching the locking hook (5b).

3. The seat lifting control mechanism according to claim 2, characterized in that: An unlocking piece (6) is rotatably mounted on one side of the transfer component (4e), one end of the unlocking piece (6) is fixedly connected to the end of the front push rod (4a) via a connecting shaft (6a), an unlocking groove (4e1) slidably engaged with the connecting shaft (6a) is provided on the transfer component (4e), and a pulling cable (7) is connected between the unlocking piece (6) and the locking tongue (5a).

4. The seat lifting control mechanism according to claim 3, characterized in that: The middle portion of the unlocking piece (6) is hinged to the transfer component (4e), and the pull cable (7) is connected to an end of the unlocking piece (6) away from the connecting shaft (6a).

5. The seat lifting control mechanism according to claim 2, characterized in that: A housing (5c) is provided outside the lock tongue (5a), the lock tongue (5a) is rotatable within the housing (5c), and a detection sensor (8) is provided on the housing (5c).

6. The seat lifting control mechanism according to claim 5, characterized in that: The locking tongue (5a) is provided with a first protruding portion (5a2) and a second protruding portion (5a3), and the housing (5c) is provided with a limiting portion (5c1) located between the first protruding portion (5a2) and the second protruding portion (5a3).

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