Novel unlocking mechanism with seat front-back adjusting function

Abstract

The invention belongs to the technical field of seats, and relates to a novel unlocking mechanism with a seat front-back adjusting function, a sliding rail is provided with locking block assemblies capable of fixing seat legs, a T-shaped groove is axially formed in the sliding rail, opposite arc-shaped grooves are axially formed in the two side walls of the T-shaped groove at intervals, and the locking block assemblies comprise the first locking block assembly and the second locking block assembly; a T-shaped spring bolt is arranged on the lower portion of the second locking block assembly and is downwards clamped into the T-shaped groove of the sliding rail, rotating spring bolts on the two sides in the first locking block assembly are arranged in the T-shaped groove in a sliding mode, and a sliding locking head in the middle can be clamped into the arc-shaped groove or slide out of the arc-shaped groove; a T-shaped spring bolt in the front locking block assembly and a sliding locking head in the rear locking block assembly can be driven at the same time through the unlocking handle assembly, and locking or unlocking between the seat and the sliding rail is achieved. The device has the advantages of being convenient to adjust and operate, light in weight, firm in fixation, capable of meeting the requirements of driving or sitting spaces of different human body sizes and suitable for adjusting the front-back distance of an aircraft seat or a high-speed rail seat.

Description

Technical Field

[0001] The invention belongs to the technical field of seats, and in particular relates to a novel unlocking mechanism with a seat front and rear adjustment function. Background Art

[0002] As we all know, space on airplanes or high-speed trains is very precious, and the front and rear distances of seats installed on them are mostly relatively fixed. However, the leg space required by different drivers or passengers is different. In addition, airplanes are constantly bumping and vibrating during flight or high-speed trains are constantly encountering environmental changes such as airflow, pressure, road surface and tracks during travel. Airplane and high-speed train seats are not allowed to shake due to loose fixation to the airplane and high-speed train, which brings difficulties and troubles to some special situations where the front and rear distances of seats need to be adjusted. Currently, airplane or high-speed train seats are basically fixed or professionals use special tools to manually adjust a single locking block to achieve the front and rear adjustment function of the seat, which cannot meet the needs of users to adjust the seats themselves. This is an adjustment and fixing method that urgently needs to be solved for airplane or high-speed train seats. Summary of the invention

[0003] The purpose of the present invention is to provide a front and rear adjustment device for an airplane or high-speed train seat, which can be firmly fixed and conveniently adjust the front and rear distance of the seat.

[0004] The object of the present invention is to solve like this:

[0005] A new unlocking mechanism with a seat forward and backward adjustment function, a locking block assembly that can fix the seat legs is slidably arranged on the slide rail, the slide rail is axially provided with a T-slot, and opposite arc grooves are axially spaced on the two side walls of the T-slot, the locking block assembly includes a first locking block assembly, the rotating lock tongues on both sides of the first locking block assembly are slidably arranged in the transverse groove, and the sliding locking head in the middle can be stuck in the arc groove or slide out of the arc groove; the sliding locking head leaves the arc groove, and the first locking block assembly can move along the slide rail to adjust the front and rear position of the seat; the sliding locking head is stuck in the arc groove, and the first locking block assembly is positioned on the slide rail to limit the front and rear movement of the seat.

[0006] As a further optimization of the above technical solution, the first locking block assembly includes a shell with an installation cavity, in which the rotating locking tongue is hingedly extended downward from the installation cavity and slidably disposed in the transverse groove, one end of the control rod is connected to the sliding locking head, and the other end extends upward from the shell and is provided with a pull rope connecting hole, one end of the spring sleeved on the control rod is connected to the top of the inner wall of the shell, and the other end is connected to the sliding locking head, the sliding locking head is clamped in the arc groove, and the sliding locking head is disengaged from the arc groove and unlocked as the control rod rises.

[0007] As a further optimization of the above technical solution, a drawstring connector is connected to the drawstring connection hole.

[0008] As a further optimization of the above technical solution, the installation cavity is a vertical through hole axially arranged on the shell, the upper part of the through hole is expanded to form a step, and the upper part of the control rod is provided with a convex edge, and the convex edge is clamped on the step to limit the downward movement of the control rod.

[0009] As a further optimization of the above technical solution, the rotary lock tongue is respectively arranged on both sides of the control rod, the lower part of the rotary lock tongue is provided with an end slidably arranged on the transverse groove, and the upper part of the rotary lock tongue is hinged in the installation cavity of the shell through a transversely arranged hinge hole and a pin.

[0010] As a further optimization of the above technical solution, limited position planes are correspondingly arranged on the installation cavity and the control rod to limit the rotation of the control rod.

[0011] As a further optimization of the above technical solution, the locking block assembly also includes a second locking block assembly.

[0012] As a further optimization of the above technical solution, the second locking block assembly includes a slide rail locking plate slidably mounted on the T-slot, one end of the pin is hinged on the slide rail locking plate, and the other end is connected to a rotating adjustment head extending out of the shell, and limited position planes are correspondingly arranged on the inner wall of the mounting cavity of the shell and the pin to limit the rotation of the pin, and a spring is mounted on the pin, one end of the spring is connected to the annular protrusion on the upper part of the pin, and the lower end is connected to the inner wall of the mounting cavity, and rotating the rotating adjustment head can drive the slide rail locking plate to move downward to release the lock with the slide rail, and move upward to lock with the slide rail, and more than two seat leg mounting holes are arranged on the shell.

[0013] As a further optimization of the above technical solution, a wire connector is installed in the upper mounting hole of the rotary adjustment head.

[0014] As a further optimization of the above technical solution, two slide rails are arranged in parallel, and the first locking block assembly and the second locking block assembly are slidably provided on each of the slide rails. The pull wire joints on all of the first locking block assemblies and the second locking block assemblies are connected to the main pull wire on the unlocking handle through branch pull wires. Operating the unlocking handle can lock or unlock all of the first locking block assemblies and the second locking block assemblies at the same time.

[0015] The outstanding advantages of the present invention compared with the prior art are:

[0016] 1. Based on the fact that many existing airplane or high-speed rail seats cannot be conveniently adjusted forward and backward, the present invention invents a new mechanism that allows passengers to adjust the seats forward and backward by just pulling a handle. This is simple and quick. After the adjustment stroke is completed, releasing the handle allows the mechanism to quickly lock the movement of the seat, which is firm and reliable.

[0017] 2. The present invention solves the problem that aircraft seats can only be adjusted at a fixed position and cannot be conveniently adjusted, and provides a longer travel in the X direction, so that the occupants can conveniently adjust to the target position.

[0018] 3. The layout of the present invention takes ergonomics into consideration, the handle is easy to operate, and the adjustment function is adapted to the operating requirements of different human body sizes.

[0019] 4. The slide rail used in the present invention is a standard slide rail used in aviation. Any aircraft using this slide rail can use the mechanism of the present invention to enable the seat to have a forward and backward adjustment function.

[0020] 5. Compared with the automobile seat slide rail adjustment mechanism, the present invention has a simple structure, simple and convenient installation and disassembly process, and low cost.

[0021] 6. The present invention is also applicable to the front and rear adjustment of high-speed rail seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the installation position of the present invention in cooperation with a seat.

[0023] Figure 2 It is a partial top view of the slide rail of the present invention.

[0024] Figure 3 It is a partial three-dimensional schematic diagram of the slide rail of the present invention.

[0025] Figure 4 It is a cross-sectional view of the slide rail of the present invention.

[0026] Figure 5 It is a three-dimensional schematic diagram of the first locking block assembly of the present invention.

[0027] Figure 6 It is a three-dimensional schematic diagram of the first locking block assembly of the present invention with the shell removed.

[0028] Figure 7 It is a three-dimensional schematic diagram of the second locking block assembly of the present invention.

[0029] Figure 8 It is a three-dimensional schematic diagram of the second locking block assembly of the present invention with the shell removed.

[0030] Fig. 9It is a schematic diagram of the use status of the first locking block assembly and the second locking block assembly of the present invention on the slide rail.

[0031] Fig.10 yes Fig. 9 Enlarged view of part A.

[0032] Fig.11 yes Fig. 9 Enlarged view of part B.

[0033] Fig.12 yes Fig. 9 Enlarged view of part C. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-Figure 12 :

[0035] A new unlocking mechanism with a seat forward and backward adjustment function, a locking block assembly for fixing the seat legs is slidably arranged on the slide rail 1, a T-slot is axially arranged on the slide rail 1, and opposite arc grooves 14 are axially spaced on the two side walls of the T-slot, the locking block assembly includes a first locking block assembly 2, the rotating lock tongues 35 on both sides of the first locking block assembly 2 are slidably arranged in the transverse groove 12, and the sliding locking head 37 in the middle can be stuck in the arc groove 14 or slide out of the arc groove 14; the sliding locking head 37 leaves the arc groove 14, and the first locking block assembly 2 can move along the slide rail 1 to adjust the front and rear position of the seat; the sliding locking head 37 is stuck in the arc groove 14, and the first locking block assembly 2 is positioned on the slide rail 1 to limit the front and rear movement of the seat.

[0036] As a further optimization of the above technical solution, the first locking block assembly 2 includes a shell 20 with an installation cavity, in which the installation cavity is hingedly provided with the rotating lock tongue 35 extending downward from the installation cavity and slidably arranged in the transverse groove 12, and the rotating lock tongue 35 is hinged on the shell 20 in the installation cavity through a hinge shaft 38. The function of the rotating lock tongue 35 is to limit the seat in the up and down direction (Z direction) when locked. One end of the control rod 31 is connected to the sliding lock head 37, and the other end extends upward from the shell 20 and is provided with a pull rope connecting hole 30. One end of the spring 33 sleeved on the control rod 31 is connected to the top of the inner wall of the shell 20, and the other end is connected to the sliding lock head 37. The sliding lock head 37 is clamped in the arc groove 14. The sliding lock head 37 is released from the arc groove 14 and unlocked as the control rod 31 rises. At the same time, the upper end plane of the sliding lock head 37 drives the rotating lock tongue 35 to rotate the inclined plane below the hinged circular hole to unlock it in the up and down direction (Z direction).

[0037] As a further optimization of the above technical solution, a pull rope connector 41 is connected to the pull rope connection hole 30 .

[0038] As a further optimization of the above technical solution, the installation cavity is a vertical through hole axially arranged on the shell 20, the upper part of the through hole is expanded to form a step, and the upper part of the control rod 31 is provided with a convex edge, which is clamped on the step to limit the downward movement of the control rod 31.

[0039] As a further optimization of the above technical solution, the rotating lock tongue 35 is respectively arranged on both sides of the control rod 31, and the lower part of the rotating lock tongue 35 is provided with a terminal end 36, and the upper part of the rotating lock tongue 35 is hinged in the mounting cavity of the shell 20 through a laterally arranged hinge hole and a pin 38; when the sliding locking head 37 moves upward to unlock the seat in the front and rear directions, the terminal end 36 also separates from the lower surface of the slide rail groove at the same time, so that it is unlocked in the Z direction, so that the locking block assembly will not have friction with the lower surface of the slide rail groove when sliding; at the same time, the Y-direction width of the terminal end 36 exceeds the diameter of the arc groove, whether in the locked state or after unlocking, the entire mechanism will not separate from the slide rail to cause danger.

[0040] As a further optimization of the above technical solution, limited position planes are correspondingly arranged on the installation cavity and the control rod 31 to limit the rotation of the control rod 31 .

[0041] As a further optimization of the above technical solution, the locking block assembly further includes a second locking block assembly, and the shell 20 is provided with more than two mounting holes 22 which can be fixedly connected to the seat.

[0042] As a further optimization of the above technical solution, the second locking block assembly 3 includes a slide rail locking piece 56 slidably mounted on the T-slot, one end of the pin 54 is hinged on the slide rail locking piece 56, and the other end is connected to the rotation adjustment head 50 extending out of the housing 60 through a retaining spring pin 51, and the inner wall of the mounting cavity of the housing 60 and the pin are correspondingly provided with a limited position plane to limit the rotation of the pin 54, and a spring 53 is mounted on the pin 54, and one end of the spring 53 is connected to the annular ring on the upper part of the pin 54. The upper and lower ends of the convex edge 52 are connected to the inner wall of the installation cavity. Rotating the rotating adjustment head 50 can drive the slide rail locking piece 56 to move downward to release the lock with the slide rail 1, and move upward to lock with the slide rail 1. The shell 60 is provided with two seat leg mounting holes 61. The retaining spring pin 51 is sleeved with a torsion spring (not marked in the figure). One end of the torsion spring is inserted into the side wall of the rotating adjustment head 50, and the other end is stuck in the corresponding groove in the shell of the second locking block, so that the rotating adjustment head can automatically return to its position when there is no external force. In addition, a cover plate is also provided on the second locking block assembly 3, which has the function of aesthetics and preventing foreign objects from falling into and causing the mechanism to be stuck.

[0043] As a further optimization of the above technical solution, a wire connector 42 is installed in the upper mounting hole of the rotary adjustment head 50 .

[0044] As a further optimization of the above technical solution, two parallel slide rails 1 are arranged, and the first locking block assembly 2 and the second locking block assembly 3 are slidably provided on each of the slide rails 1. The pull wire joints 41 and 42 on all of the first locking block assemblies 2 and the second locking block assemblies 3 are connected to the main pull wire 73 on the unlocking handle 71 through branch pull wires 731, 732, 733, and 734. Operating the unlocking handle 71 can simultaneously lock or unlock all of the first locking block assemblies 2 and the second locking block assemblies 3 to lock or move the front and rear positions of the seats.

[0045] The present invention mainly comprises a slide rail 1, a first locking block assembly 2 and a second locking block assembly 3. The first locking block assembly 2 and the second locking block assembly 3 slide on the slide rail 1. The legs of the aircraft seat 100 or the high-speed rail are connected to the first locking block assembly 2 and the second locking block assembly 3 by bolts. The rotating handle 71 is fixed to the handle base 70 by a spring pin 74. The finger drives the rotating handle 71 to rotate clockwise around the spring pin 74. The wire terminal in the wire terminal slot 76 drives the wire 73 to move, thereby unlocking the above two main structures. In addition, a tension spring 72 is also provided on the rotating handle so that the handle can return to its original position smoothly after rotating clockwise. The rear end of the tension spring is fixed to the hole below the bracket 77. The handle base and the bracket are fixed to the seat basin structure through the mounting holes on the top; when the occupant adjusts the unlocking handle 71, the first locking block assembly 2 and the second locking block assembly 3 on the two slide rails can be controlled through the main pull wire 73 and the synchronously moving branch pull wires 731, 732, 733, and 734 (the pull wire terminal is fixed in the pull wire terminal slot on the rotating handle 71, and is divided into two pull wires through a one-out-two pull wire, and the two pull wires are respectively connected to an adapter plate, which in turn drives the two pull wires, thereby realizing that one pull wire can drive four structures to move synchronously) The pull wire connector drives the internal components of the first locking block assembly 2 and the second locking block assembly 3 to move synchronously, thereby unlocking the seat, adjusting the seat from a locked state on the slide rail to a free state, and allowing it to slide freely on the slide rail. When the occupant releases the unlocking handle 71, the unlocking handle 71 is reset by the reset spring, and the internal components of the first locking block assembly 2 and the second locking block assembly 3 are reset by their respective springs 33 and 53, locking the first locking block assembly 2 and the second locking block assembly 3 on the slide rail 1, thereby locking the seat 100.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions or technical features described in the aforementioned embodiments can still be simply replaced or modified with similar technologies, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.

Claims

1. A new unlocking mechanism with seat front and rear adjustment function, characterized in that: A locking block assembly for fixing the seat legs is slidably arranged on the slide rail, the slide rail is axially arranged with a T-slot, and opposite arc grooves are axially arranged on the two side walls of the T-slot, and the locking block assembly includes a first locking block assembly, the rotating lock tongues on both sides of the first locking block assembly are slidably arranged in the transverse groove, and the sliding locking head in the middle can be stuck in the arc groove or slide out of the arc groove; the sliding locking head leaves the arc groove, and the first locking block assembly can move along the slide rail to adjust the front and rear position of the seat; the sliding locking head is stuck in the arc groove, and the first locking block assembly is positioned on the slide rail to limit the front and rear movement of the seat.

2. A novel unlocking mechanism with seat front and rear adjustment function according to claim 1, characterized in that: The first locking block assembly includes a shell with an installation cavity, in which the rotating locking tongue is hingedly connected and extends downward from the installation cavity and is slidably disposed in the transverse groove. One end of the control rod is connected to the sliding locking head, and the other end extends upward from the shell and is provided with a pull rope connecting hole. One end of the spring sleeved on the control rod is connected to the top of the inner wall of the shell, and the other end is connected to the sliding locking head. The sliding locking head is clamped in the arc groove, and the sliding locking head is disengaged from the arc groove and unlocked as the control rod rises.

3. A novel unlocking mechanism with seat front and rear adjustment function according to claim 2, characterized in that: The drawstring connecting hole is connected with a drawstring connector.

4. The novel unlocking mechanism with seat front and rear adjustment function according to claim 2 is characterized in that: The installation cavity is a vertical through hole axially arranged on the shell, the upper part of the through hole is enlarged to form a step, and the upper part of the control rod is provided with a convex edge, which is clamped on the step to limit the downward movement of the control rod.

5. The novel unlocking mechanism with seat front and rear adjustment function according to claim 2 is characterized in that: The rotating lock tongues are respectively arranged on both sides of the control rod, the lower part of the rotating lock tongue is provided with an end slidably arranged on the transverse groove, and the upper part of the rotating lock tongue is hinged in the installation cavity of the shell through a transversely arranged hinge hole and a pin.

6. The novel unlocking mechanism with seat front and rear adjustment function according to claim 2 is characterized in that: The installation cavity and the control rod are both provided with limiting planes correspondingly to limit the rotation of the control rod.

7. A novel unlocking mechanism with seat front and rear adjustment function according to any one of claims 1 to 6, characterized in that: The locking block assembly also includes a second locking block assembly.

8. The novel unlocking mechanism with seat front and rear adjustment function according to claim 7 is characterized in that: The second locking block assembly includes a slide rail locking plate slidably mounted on the T-slot, one end of the pin is hinged on the slide rail locking plate, and the other end is in contact with the rotating adjustment head. The inner wall of the mounting cavity of the shell and the pin are correspondingly provided with limited position planes to limit the rotation of the pin. A spring is mounted on the pin, one end of the spring is connected to the annular convex edge on the upper part of the pin, and the lower end is connected to the inner wall of the mounting cavity. Rotating the rotating adjustment head can drive the slide rail locking plate to move downward to release the lock with the slide rail, and move upward to lock with the slide rail. More than two seat leg mounting holes are provided on the shell.

9. The novel unlocking mechanism with seat front and rear adjustment function according to claim 8 is characterized in that: A wire pull connector is installed on the upper mounting hole of the rotary adjustment head.

10. The novel unlocking mechanism with seat front and rear adjustment function according to claim 7, characterized in that: There are two parallel slide rails, and the first locking block assembly and the second locking block assembly are slidably provided on each of the slide rails. The pull wire joints on all the first locking block assemblies and the second locking block assemblies are connected to the main pull wire on the unlocking handle through the branch pull wire. Operating the unlocking handle can lock or unlock all the first locking block assemblies and the second locking block assemblies at the same time.

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