Seat framework with anti-locking function

Abstract

The invention relates to a seat framework with an anti-locking function. The automatic locking device has the advantage of preventing the seat framework from being automatically locked and comprises the seat framework, the rear portion of the seat framework is connected with a seat backrest through an angle adjuster, two ground locks are arranged on the rear portion of the seat framework, the seat framework is locked on the upper surfaces of two sliding rails through the two ground locks, the sliding rails are arranged on rails in a sliding mode, and the seat framework is connected with the seat backrest through the angle adjuster. The two sliding rails are each provided with a locking assembly, the locking assemblies are inserted into the rails so that the sliding rails can slide and be limited, the seat framework can rotate around the locking assemblies, and anti-locking assemblies are arranged between the locking assemblies and the seat framework and used for supporting the seat framework. And the seat framework is prevented from automatically falling to be matched with the ground lock.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile seats, and in particular relates to a seat frame with an anti-drop locking function. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, cars have become an indispensable means of transportation for people to travel. At present, the sales volume of commercial vehicles in China is increasing. The space inside the car is limited, and it is inconvenient for passengers in the third row to get on and off the car. In order to provide enough space for passengers in the three rows to enter and exit, the seats in the second row are usually set to a flip-up structure, which is easy to fold and flip, making it convenient for passengers in the third row to get on and off the car. However, it is still inconvenient for passengers to get on and off the car by only folding and flipping the seat backs. Moreover, if the flipped seat is not held by hand, it will fall due to gravity and easily hit the passengers, causing injuries to the passengers. Therefore, a seat frame with an anti-fall lock function is designed to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a seat frame with an anti-fall locking function.

[0004] The technical solutions of the present invention are as follows:

[0005] A seat frame with an anti-drop lock function includes a seat frame, the rear of the seat frame is connected to a seat back through an adjuster, two ground locks are provided at the rear of the seat frame, the seat frame is locked to the upper surface of two slide rails through the two ground locks, the slide rails are slidably set on the rails, and locking assemblies are provided on both of the slide rails. The locking assemblies are inserted into the rails to limit the sliding of the slide rails, and the seat frame can rotate around the locking assembly. An anti-drop lock assembly is provided between the locking assembly and the seat frame, and the anti-drop lock assembly is used to support the seat frame to prevent the seat frame from automatically falling and cooperating with the ground locks.

[0006] Furthermore, the locking assembly includes a pressing rod inserted into the upper part of the slide rail, a plug plate is fixed to the lower part of the pressing rod, two groups of first plug holes are opened at the lower part of the slide rail, and two groups of second plug holes are opened inside the track. The plug plate is slidably set in the first plug hole, and the plug plate can be inserted into the second plug hole. Two tension springs are provided in the slide rail, the upper end of the tension spring is fixed to the inner side wall of the slide rail, and the lower end of the tension spring is fixed to the upper part of the plug plate. A pressing assembly is provided on the slide rail, and the pressing assembly is used to press the pressing rod to control the sliding limit of the slide rail.

[0007] Furthermore, the first jack is L-shaped, the second jack is I-shaped, and the plurality of the first jacks and the second jacks in each group are arranged at equal distances.

[0008] Furthermore, the pressing assembly includes a mounting bracket fixed to the upper side of the slide rail, a rotating shaft is fixed to the upper part of the mounting bracket, a pressing plate is rotatably connected to the rotating shaft, a first coil spring is sleeved on the rotating shaft, one end of the first coil spring is fixed to the rotating shaft, and the other end of the first coil spring is fixed to the pressing plate, a connecting plate is rotatably connected to the mounting bracket, the seat frame is rotatably mounted on the other end of the connecting plate, the front end of the mounting bracket is rotatably connected to a main board, the upper end of the main board is rotatably connected to the front end of the seat frame, and the anti-fall lock assembly is mounted on the mounting bracket.

[0009] Furthermore, reinforcement columns are fixed on the two main boards, and both ends of the reinforcement columns are rotatably connected to the left and right sides of the seat frame respectively.

[0010] Furthermore, the pressing plates in the two pressing assemblies are each provided with a top plate, and the two top plates are both fixed on the middle rod, and the left and right ends of the middle rod are respectively rotatably connected to the two mounting frames, and a handle is fixed at the front end of the middle rod, and the left and right ends of the middle rod are both fixed with a second coil spring, and the other ends of the two second coil springs are respectively fixed on the inner walls of the two mounting frames.

[0011] Furthermore, the anti-drop lock assembly includes a spring hooked on the front end of the mounting bracket, the rear end of the spring hooked on the limiting shaft, and the limiting shaft is fixed to the front part of the connecting plate.

[0012] Furthermore, a concave frame is fixed to the side of the seat frame, and the lower part of the concave frame is rotatably connected to an anti-fall plate. A third coil spring is provided at the lower part of the concave frame, one end of the third coil spring is fixed to the lower part of the concave frame, and the other end of the third coil spring hooks the rear part of the anti-fall plate. A first limiting rod is fixed to the lower part of the concave frame, and a second limiting rod is fixed to the side of the track on the same side of the concave frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can fold the seat back and move and flip the seat frame by arranging a recliner, a floor lock, a seat back, a slide rail, a track, a seat frame and a locking assembly, thereby making it convenient for passengers in the rear seats to get off the vehicle.

[0015] 2. The present invention can automatically release the limit of the locking assembly when the seat is flipped over through the mutual cooperation of the anti-fall lock assembly, the seat frame and the locking assembly, so that the seat frame can move horizontally directly after rotation, and the anti-fall lock assembly can prevent the seat frame from automatically locking and resetting due to gravity, avoiding hitting the passengers' feet when they get off the car.

[0016] In summary, the present invention has the advantage of preventing the seat frame from automatically locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a structural diagram of the handle position in the present invention;

[0019] Figure 3 It is a structural schematic diagram of the position of the rotating shaft in the present invention;

[0020] Figure 4 It is a structural diagram of the position of the limit axis in the present invention;

[0021] Figure 5 It is a structural diagram of the position of the pressing rod in the present invention;

[0022] Figure 6 It is a structural schematic diagram of the position of the ejector rod in the present invention;

[0023] Figure 7 This invention Figure 6 A magnified schematic diagram of point A in the middle;

[0024] Figure 8 It is a structural schematic diagram of the position of the anti-fall plate in the present invention.

[0025] In the figure, 1. seat frame; 2. recliner; 3. seat back; 4. floor lock; 5. track; 6. slide rail; 7. pressing rod; 8. plug plate; 9. first socket; 10. second socket; 11. tension spring; 12. mounting frame; 13. rotating shaft; 14. pressing plate; 15. first coil spring; 16. connecting plate; 17. main board; 18. reinforcing column; 19. top plate; 20. middle rod; 22. handle; 23. second coil spring; 24. spring; 25. limiting shaft; 26. concave frame; 27. anti-fall plate; 28. third coil spring; 29. first limiting rod; 30. second limiting rod. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figures 1 to 8As shown, a seat frame 1 with an anti-drop lock function includes a seat frame 1, the rear portion of the seat frame 1 is connected to a seat back 3 via a recliner 2, two floor locks 4 are provided at the rear portion of the seat frame 1, the seat frame 1 is locked to the upper surfaces of two slide rails 6 via the two floor locks 4, the slide rails 6 are slidably arranged on rails 5, and both slide rails 6 are provided with locking assemblies, the locking assemblies are inserted into the rails 5 so that the slide rails 6 slide and limit, and the seat frame 1 can rotate around the locking assemblies, an anti-drop lock assembly is provided between the locking assembly and the seat frame 1, and the anti-drop lock assembly is used to support the seat frame 1 and prevent the seat frame 1 from automatically falling and cooperating with the floor locks 4;

[0028] The pull wire of the floor lock 4 is set on the upper part of the seat back 3. The recliner 2 can be selected as QTF04, and the floor lock 4 can be selected as HYLX98-00L / R. The pull wire is used to control the opening and closing of the floor lock 4;

[0029] The seat frame 1 in the present invention is mainly used for the middle seat of a commercial vehicle. When the rear passengers need to get off the vehicle, the horizontal position of the seat frame 1 can be adjusted by releasing the locking assembly. The seat frame 1 can be rotated by releasing the limit of the ground lock 4, thereby rotating the seat frame 1 of the folding seat back 3 to facilitate the rear passengers to get off the vehicle. In addition, the anti-fall lock assembly can prevent the rotated seat frame 1 from automatically falling, thereby preventing the seat frame 1 from automatically falling and hitting the vehicle during the rear passengers getting off the vehicle, causing injury to the passengers.

[0030] In this embodiment, the locking assembly includes a pressing rod 7 inserted into the upper part of the slide rail 6, a plug plate 8 is fixed to the lower part of the pressing rod 7, two groups of first plug holes 9 are opened at the lower part of the slide rail 6, two groups of second plug holes 10 are opened inside the track 5, the plug plate 8 is slidably set in the first plug hole 9, and the plug plate 8 can be inserted into the second plug hole 10. Two tension springs 11 are provided in the slide rail 6, the upper end of the tension spring 11 is fixed to the inner side wall of the slide rail 6, and the lower end of the tension spring 11 is fixed to the upper part of the plug plate 8. A pressing assembly is provided on the slide rail 6, and the pressing assembly is used to press the pressing rod 7, thereby controlling the sliding limit of the slide rail 6;

[0031] Preferably, the first jack 9 is L-shaped, the second jack 10 is I-shaped, and the plurality of first jacks 9 and second jacks 10 in each group are arranged at equal distances;

[0032] The second insertion hole 10 is only provided in the middle of the track 5, occupying half the length of the track 5. When the slide rail 6 drives the pressing component to move out of the area of the second insertion hole 10, the pressing component will not limit the track 5.

[0033] Press the pressing rod 7 downward, and the pressing rod 7 drives the plug plate 8 to descend. When the plug plate 8 moves downward a certain distance, the plug plate 8 will disengage from the second socket 10. At this time, the slide rail 6 releases the limit of the locking assembly, and then the slide rail 6 can move on the track 5. When the slide rail 6 moves to the appropriate position, release the plug plate 8. The plug plate 8 is pulled upward by the tension spring 11 and reinserted into the second socket 10 to complete the limit of the slide rail 6.

[0034] In this embodiment, the pressing assembly includes a mounting frame 12 fixed to the upper side of the slide rail 6, a rotating shaft 13 is fixed to the upper part of the mounting frame 12, a pressing plate 14 is rotatably connected to the rotating shaft 13, a first coil spring 15 is sleeved on the rotating shaft 13, one end of the first coil spring 15 is fixed to the rotating shaft 13, and the other end of the first coil spring 15 is fixed to the pressing plate 14, a connecting plate 16 is rotatably connected to the mounting frame 12, the seat frame 1 is rotatably mounted on the other end of the connecting plate 16, the front end of the mounting frame 12 is rotatably connected to the main board 17, the upper end of the main board 17 is rotatably connected to the front end of the seat frame 1, and the anti-fall lock assembly is installed on the mounting frame 12.

[0035] In this embodiment, the two main boards 17 are fixed with reinforcement columns 18, and the two ends of the reinforcement columns 18 are rotatably connected to the left and right sides of the seat frame 1 respectively;

[0036] By lifting the handle 22, the handle 22 drives the middle rod 20 to rotate, the middle rod 20 drives the two top plates 19 to rotate, and the two top plates 19 drive the pressing plate 14 to rotate. The pressing plate 14 will press the pressing rod 7 downward, thereby controlling the locking assembly to limit the slide rail 6;

[0037] During this period, after the handle 22 is released, the first coil spring 15 will drive the pressing plate 14 to reset, and the second coil spring 23 will drive the middle rod 20 to reset, thereby driving the handle 22 to reset, and no longer pressing the pressing rod 7, so that the pressing rod 7 is driven by the tension spring 11 to move upward and reset, thereby limiting the slide rail 6.

[0038] In this embodiment, a top plate 19 is provided on the pressing plates 14 in the two pressing assemblies, and the two top plates 19 are fixed on the middle rod 20. The left and right ends of the middle rod 20 are respectively rotatably connected to the two mounting frames 12. A handle 22 is fixed to the front end of the middle rod 20, and a second coil spring 23 is fixed to the left and right ends of the middle rod 20. The other ends of the two second coil springs 23 are respectively fixed to the inner walls of the two mounting frames 12.

[0039] In this embodiment, the anti-drop lock assembly includes a spring 24 hooked on the front end of the mounting bracket 12, and the rear end of the spring 24 hooks on the limiting shaft 25, which is fixed to the front of the connecting plate 16;

[0040] The front portion of the pressing plate 14 is arc-shaped, and the limiting shaft 25 is located below the pressing plate 14;

[0041] When the seat is lifted, the seat frame 1 will drive the connecting plate 16 to rotate, and the connecting plate 16 will drive the limiting shaft 25 to move. The limiting shaft 25 will push the front end of the pressing plate 14 upward, causing the pressing plate 14 to rotate, thereby causing the pressing plate 14 to press the pressing rod 7 and release the limit of the slide rail 6. At this time, after the seat is lifted, the seat can be directly pushed to drive the slide rail 6 to move on the track 5. The spring 24 will pull the connecting plate 16, so that the connecting plate 16 remains in a forward state to prevent the seat frame 1 from falling due to its own gravity.

[0042] In this embodiment, a concave frame 26 is fixed to the side of the seat frame 1. The lower portion of the concave frame 26 is rotatably connected to an anti-drop plate 27. A third coil spring 28 is provided at the lower portion of the concave frame 26. One end of the third coil spring 28 is fixed to the lower portion of the concave frame 26, and the other end of the third coil spring 28 is hooked to the rear portion of the anti-drop plate 27. A first limiting rod 29 is fixed to the lower portion of the concave frame 26, and a second limiting rod 30 is fixed to the side of the track 5 on the same side of the concave frame 26.

[0043] The third coil spring 28 can drive the anti-drop plate 27 to return to its original position after the anti-drop plate 27 rotates due to an external force;

[0044] The anti-drop plate 27 is in an inverted herringbone shape. The first limiting rod 29 is located at the socket of the anti-drop plate 27 and can limit the rotation angle of the anti-drop plate 27. The second limiting rod 30 is located on the same horizontal line as the socket of the anti-drop plate 27.

[0045] The seat frame 1 moves horizontally on the track 5 via the slide rail 6. When the anti-drop plate 27 presses against the second limit rod 30, the seat frame 1 stops moving and moves to the maximum distance. At this time, the pressing assembly is still located in the area of the second socket 10.

[0046] After releasing the limit of the ground lock 4, rotating the seat frame 1 can release the limit of the slide rail 6, and the seat frame 1 moves forward and can move out of the second hole 10 area. At this time, the seat frame 1 has moved to the empty travel area. When the seat frame 1 in the empty travel area is rotated and reset, the lock will not restrict the slide rail 6. At this time, continue to push the seat frame 1 backward, and the seat frame 1 drives the slide rail 6 to move toward the second hole 10 area. During the movement, the rear part of the anti-fall plate 27 will contact the second limit rod 30. Continue to move, and the second limit rod 30 will push the anti-fall plate 27 to rotate, so that the anti-fall plate 27 passes the second limit rod 30, and then the slide rail 6 enters the second hole 10 area. The locking assembly cooperates with the track 5 to limit the slide rail 6 and complete the locking.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seat frame with an anti-fall locking function, comprising a seat frame, characterized in that: The rear part of the seat frame is connected to the seat back through an adjuster, and two ground locks are provided at the rear part of the seat frame. The seat frame is locked to the upper surface of two slide rails through the two ground locks. The slide rails are slidably set on the rails, and locking assemblies are provided on both of the slide rails. The locking assemblies are inserted into the rails to limit the sliding of the slide rails. The seat frame can rotate around the locking assembly, and an anti-fall lock assembly is provided between the locking assembly and the seat frame. The anti-fall lock assembly is used to support the seat frame to prevent the seat frame from automatically falling and cooperating with the ground locks.

2. The seat frame with anti-fall locking function according to claim 1, characterized in that: The locking assembly includes a pressing rod inserted into the upper part of the slide rail, a plug plate is fixed to the lower part of the pressing rod, two groups of first plug holes are opened at the lower part of the slide rail, and two groups of second plug holes are opened inside the track. The plug plate is slidably set in the first plug hole, and the plug plate can be inserted into the second plug hole. Two tension springs are provided in the slide rail, the upper end of the tension spring is fixed to the inner side wall of the slide rail, and the lower end of the tension spring is fixed to the upper part of the plug plate. A pressing assembly is provided on the slide rail, and the pressing assembly is used to press the pressing rod to control the sliding limit of the slide rail.

3. The seat frame with anti-fall locking function according to claim 2, characterized in that: The first jack is L-shaped, the second jack is I-shaped, and the first jacks and second jacks in each group are arranged at equal distances.

4. The seat frame with anti-fall locking function according to claim 2, characterized in that: The pressing assembly includes a mounting bracket fixed to the upper side of the slide rail, a rotating shaft is fixed to the upper part of the mounting bracket, a pressing plate is rotatably connected to the rotating shaft, a first coil spring is sleeved on the rotating shaft, one end of the first coil spring is fixed to the rotating shaft, and the other end of the first coil spring is fixed to the pressing plate, a connecting plate is rotatably connected to the mounting bracket, the seat frame is rotatably mounted on the other end of the connecting plate, the front end of the mounting bracket is rotatably connected to a main board, the upper end of the main board is rotatably connected to the front end of the seat frame, and the anti-fall lock assembly is installed on the mounting bracket.

5. The seat frame with anti-fall locking function according to claim 4, characterized in that: Reinforcement columns are fixed on the two main boards, and two ends of the reinforcement columns are rotatably connected to the left and right sides of the seat frame respectively.

6. The seat frame with anti-fall locking function according to claim 4, characterized in that: The pressing plates in the two pressing assemblies are both provided with top plates, and the two top plates are both fixed on the middle rod. The left and right ends of the middle rod are respectively rotatably connected to the two mounting frames. A handle is fixed on the front end of the middle rod, and the left and right ends of the middle rod are both fixed with second coil springs, and the other ends of the two second coil springs are respectively fixed on the inner walls of the two mounting frames.

7. The seat frame with anti-fall locking function according to claim 4, characterized in that: The anti-drop lock assembly includes a spring hooked on the front end of the mounting frame, the rear end of the spring hooked on the limiting shaft, and the limiting shaft is fixed to the front part of the connecting plate.

8. The seat frame with anti-fall locking function according to claim 1, characterized in that: A concave frame is fixed to the side of the seat frame, and the lower part of the concave frame is rotatably connected to an anti-fall plate. A third coil spring is provided at the lower part of the concave frame, one end of the third coil spring is fixed to the lower part of the concave frame, and the other end of the third coil spring is hooked to the rear part of the anti-fall plate. A first limiting rod is fixed to the lower part of the concave frame, and a second limiting rod is fixed to the side of the track on the same side of the concave frame.

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