Helicopter passenger seat leg lock capable of being quickly disassembled

Abstract

The utility model discloses a helicopter passenger seat leg lock capable of being disassembled quickly, which comprises a rear sliding block and a seat leg lock adjusting block, a seat leg lock connecting piece is rotatably connected onto the rear sliding block, the rear seat leg lock connecting piece penetrates through the seat leg lock adjusting block and the seat leg lock connecting piece, and the rear seat leg lock connecting piece is connected onto a seat leg of a seat. The check block is arranged on the rear sliding block, one end of the supporting rod is connected to the rear sliding block, the other end of the supporting rod penetrates through the check block to be rotationally connected with the handle, a first spring is arranged on the supporting rod, a boss capable of being matched with the groove of the sliding rail is arranged on the lower portion of the check block, and an arc-shaped structure is arranged on the lower portion of the handle. The chair leg lock is simple in structure, convenient to use, light in weight and capable of meeting the performance requirement and the quick release requirement of a chair.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of helicopter, especially a detachable helicopter passenger seat chair leg lock. BACKGROUND

[0002] The passenger seat of the civil helicopter is connected with the slide rail on the machine through the chair leg lock, and the chair leg lock needs to meet the requirements of quick installation and disassembly of the seat. Meanwhile, according to the relevant airworthiness standards of the passenger seat, the design of the chair leg lock of the seat needs to consider the influence of the 10° pitch and 10° roll deformation of the installation support caused by the floor warping. CONTENT OF THE UTILITY MODEL

[0003] PURPOSE OF THE UTILITY MODEL

[0004] In order to meet the quick disassembly requirements of the seat and adapt to the requirements of the floor deformation in the airworthiness regulations, the utility model provides a detachable helicopter passenger seat chair leg lock.

[0005] TECHNICAL SOLUTION OF THE UTILITY MODEL

[0006] A detachable helicopter passenger seat chair leg lock, comprising a rear sliding block, a chair leg lock adjusting block and a chair leg lock connecting piece are rotatably connected to the rear sliding block, a rear chair leg lock chair leg connecting piece passes through the chair leg lock adjusting block, the chair leg lock connecting piece and the rear chair leg lock chair leg connecting piece are connected to the chair leg of the seat, a stop block is arranged on the rear sliding block, a support rod is connected to the rear sliding block at one end, the support rod is rotatably connected to a handle at the other end through the stop block, a spring is arranged on the support rod, the stop block has a convex platform at the lower part which can cooperate with the groove of the slide rail, and the lower part of the handle has an arc structure.

[0007] Preferably, a handle cover is connected to one side of the handle, a spring clamping groove is located between the handle cover and the handle, a spring is arranged in the groove on the handle cover, the spring clamping groove has a hole at the corresponding position of the spring, one end of the hole has a bent section two which is bent into the groove on the handle cover, and the side of the spring clamping groove has a bent section three which can hook the square platform on the upper part of the stop block when the handle is in the horizontal state.

[0008] Preferably, the upper part of the chair leg lock connecting piece has a circular convex platform on both sides, the circular convex platform on one side is inserted into the center installation hole on the rear chair leg lock chair leg connecting piece, and the circular convex platform on the other side of the chair leg lock connecting piece is inserted into the chair leg installation hole.

[0009] Preferably, the lower part of the handle is rotatably connected to the support rod through a pin one, and the pin one is eccentrically arranged.

[0010] Preferably, the rear sliding block has an "8" shaped convex platform on both sides, and the "8" shaped convex platform can slide along the groove of the slide rail.

[0011] Preferably, the upper part of the rear sliding block and the lower part of the chair leg lock connecting piece each have a plurality of connecting ears in the vertical direction, the connecting ears on the rear sliding block and the connecting ears on the chair leg lock connecting piece are alternately inserted, and the lock body rotating shaft passes through the through holes of the connecting ears.

[0012] Preferably, the rear sliding block has a small boss, and the bottom surface of the stopper has a hole matched with the small boss.

[0013] Preferably, the hole corresponding to the spring on the spring clamping groove is a bullet-shaped hole, the rectangular section of the bullet-shaped hole is used for placing the spring, and the semicircular section of the bullet-shaped hole and the waist-shaped groove provided on the spring clamping groove are used for mounting the screw and connecting the handle.

[0014] Preferably, the end of the spring clamping groove has a bending section one.

[0015] Preferably, the side edge of the handle cover has a rectangular protrusion.

[0016] The chair leg lock has the advantages that the chair leg lock has simple structure, is convenient to use, is light in weight, and can meet the performance requirement and quick dismounting requirement of a seat. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 , Figure 2 is a structural schematic view of the chair leg lock.

[0018] Figure 3 is a structural schematic view of the rear sliding block.

[0019] Figure 4 is a structural schematic view of the chair leg lock connecting piece.

[0020] Figure 5 is a structural schematic view of the chair leg lock adjusting block.

[0021] Figure 6 is a structural schematic view of the rear chair leg lock chair leg connecting piece.

[0022] Figures 7-9 is a structural schematic view of the stopper.

[0023] Figure 10 is a structural schematic view of the handle.

[0024] Figure 11 , Figure 12 is a structural schematic view of the spring clamping groove.

[0025] Figure 13 , Figure 14 is a structural schematic view of the handle cover.

[0026] Figure 15 is a structural schematic view of the supporting rod.

[0027] Figure 16 ​​​is a schematic diagram of the floor deformation when the seat is tested.

[0028] Figure 17 is a schematic diagram of the chair leg lock connecting with the seat chair leg.

[0029] Figure 18 (a)-(d) are schematic diagrams of the chair leg lock quick installation and disassembly.

[0030] Wherein: 1 - rear sliding block, 2 - chair leg lock connecting piece, 3 - chair leg lock adjusting block, 4 - rear chair leg lock chair leg connecting piece, 5 - stop block, 6 - handle, 7 - spring slot, 8 - handle cover, 9 - support rod, 10 - lock body pivot, 11 - pin, 12 - pin one, 13 - spring, 14 - spring one, 201 - waist-shaped hole, 501 - square platform, 502 - semicircular protrusion, 503 - waist-shaped hole, 504 - circular groove, 701 - bullet-shaped hole, 702 - waist-shaped hole, 703 - bending section one, 704 - bending section two, 705 - bending section three, 11-1 - original position, 11-2 - deformed position, 11-3 - horizontal roll axis, 11-4 - pitch axis, 11-5 - slide rail, 12-1 - chair leg, 12-2 - chair leg lock, 12-3 - screw, 13-1 - chair leg lock, 14 - slide rail recess. DETAILED DESCRIPTION

[0031] The utility model is realized through the following technical schemes.

[0032] As Figure 1 shown, a detachable helicopter passenger seat chair leg lock, including rear sliding block 1, chair leg lock adjusting block 3, chair leg lock connecting piece 2, rear chair leg lock chair leg connecting piece 4, chair leg lock limiting block, lock body pivot 10, support rod 9.

[0033] The rear sliding block 1 has a plurality of connecting ears in the vertical direction, for connecting with the chair leg lock connecting piece 2 through the lock body pivot 10, each connecting ear has a circular through hole for installing the lock body pivot, the circular through holes on each connecting ear are coaxial, the two side faces of the rear sliding block 1 have "8" shaped bosses, which can be used in cooperation with the guide rail groove on the machine and slide in the guide rail groove. The front part has a circular small boss, the top surface of the small boss is provided with a waist-shaped hole in the vertical direction for installing the support rod connecting piece, and the small boss is radially provided with a circular hole for installing the pin 11, and the pin 11 is used to connect the support rod connecting piece and the rear sliding block 1.

[0034] The lower part of the chair leg lock connector 2 has several connecting ears in vertical direction, which are used to cooperate with the connecting ears of the rear sliding block 1 and are connected with the rear sliding block 1 through the lock body pivot 10. The upper part of the chair leg lock connector 2 has protruding circular bosses on both sides, one side of which can be clamped into the corresponding circular hole of the rear chair leg lock chair leg connector 4, and the other side can be clamped into the corresponding circular hole of the seat chair leg. The middle part of the chair leg lock connector 2 has a waist-shaped hole 201 corresponding to the circular hole on the rear chair leg lock chair leg connector 4, which is connected to the seat chair leg through a screw.

[0035] The top surface of the chair leg lock adjusting block 3 is provided with a square hole, which has a height difference between the left and right structures. The rear sliding block 1 passes through the square hole and is connected with the double ears on the lower part of the chair leg lock adjusting block 3 through the lock body pivot 10. After being fixed, it can rotate around the lock body pivot 10.

[0036] The rear chair leg lock chair leg connector 4 is provided with four holes. The middle one is connected with the boss on the chair leg lock connector 2, the lower one is corresponding to the waist-shaped hole on the rear chair leg lock chair leg connector 4, and the other two holes are connected with the seat chair leg through screws.

[0037] The stop block 5 has a boss structure, the front end of which extends a square platform 501, the lower end of which has a semicircular protrusion 502, the top surface of which is provided with a waist-shaped hole 503, and the bottom of the boss is provided with a circular groove 504. The waist-shaped hole 503 is used for the support rod 9 to pass through, and the circular groove 504 is used for placing the spring 14 and enveloping the small boss of the rear sliding block 1.

[0038] The handle 6 is composed of a straight section and a double ear joint. The straight section has two threaded holes for installing screws. The front end of the double ear joint is arc-shaped, realizing the rotating movement of the handle 6. The double ear joint has an eccentric hole for installing the pin 12. The lower part of the handle 6 forms a cam structure.

[0039] The spring clamping groove 7 is a rectangular plate, which is provided with a bullet-shaped hole 701 and a waist-shaped hole 702, and has three bending sections. The rectangular section of the bullet-shaped hole 701 is used for placing the spring 13, the semicircular section is used for installing the screw and connecting with the handle 6, and the waist-shaped hole 702 is used for installing the screw and connecting with the handle 6. The bending section one 703 located at the end of the bullet-shaped hole 701 is used for finger gripping, the bending section two 704 located at the end of the rectangular section of the bullet-shaped hole 701 is used for driving the spring 13 to compress, and the bending section three 705 located on the side of the spring clamping groove 7 is used for limiting the handle 6. When the handle 6 is in a horizontal state, the bending section three 705 can hook the square platform 501 on the upper part of the stop block 5.

[0040] The handle cover 8 has a bone rod-shaped groove, and two circular grooves are arranged outside the two ends of the bone rod-shaped groove. The bone rod-shaped groove is used for placing the spring 13, and the circular grooves are used for mounting screws to connect the handle 6. The side edge has a rectangular protrusion for covering the handle 6.

[0041] The support rod 9 is a flat round rod, and circular holes are arranged at the two ends for mounting the pin 12.

[0042] The lock body rotating shaft 10 is a flat head shaft, and an annular groove is arranged at one end for connecting the rear sliding block 1, the chair leg lock connecting piece 2 and the chair leg lock adjusting block 3.

[0043] The rear sliding block 1 is connected with the connecting ear of the chair leg lock connecting piece 2 through the connecting ear thereon, and then the chair leg lock adjusting block 3 is sleeved outside the chair leg lock connecting piece 2 through the square slot thereon. The lock body rotating shaft 10 penetrates the mounting holes of the rear sliding block 1, the chair leg lock connecting piece 2 and the chair leg lock adjusting block 3 to connect them together.

[0044] One end of the support rod 9 is inserted into the waist-shaped hole on the front end boss of the rear sliding block 1 and is fixedly connected with the rear sliding block 1 through the pin 11. Then the spring 14 is arranged on the support rod 9, and the support rod 9 penetrates the waist-shaped hole 503 on the stop block 5 to cover the spring 14 with the stop block 5. The other end of the support rod 9 is connected with the double ears of the handle 6 through the pin 12. Then the mounting hole of the spring clamping groove 7 is aligned with the mounting hole of the handle 6, the spring 13 is clamped into the handle cover 8, and the handle cover 8 is connected with the handle 6 through screws. Then one side of the circular boss of the chair leg lock connecting piece 2 is inserted into the center mounting hole of the rear chair leg lock chair leg connecting piece 4, and the other side of the circular boss of the chair leg lock connecting piece 2 is inserted into the chair leg mounting hole, and the rear chair leg lock chair leg connecting piece 4 is connected with the chair leg of the seat through screws (the chair leg lock is connected with the guide rail on the helicopter). Figure 17

[0045] When the test of adapting to the deformation of the floor is performed, the chair leg lock connecting piece 2 can rotate around the lock body rotating shaft 10 penetrating the connecting ear to adapt to the roll deformation, and the chair leg lock connecting piece 2 can rotate through the waist-shaped hole thereon to adapt to the pitch deformation. The seat can meet the requirements of roll of 10° and pitch of 10° at the same time, and the effect as shown in Figure 6 is achieved.

[0046] When the rapid installation of the chair leg lock 13-1 on the guide rail 13-2 is performed, first, as shown in Figure 18 (a), the chair leg lock rear sliding block “8”-shaped boss 15 is aligned with the groove 14 of the guide rail, then the chair leg lock is lowered onto the guide rail 11-5, and the chair leg lock 13-1 is slid forward or backward on the guide rail 11-5, so that the stop block 5 of the chair leg lock reaches concentricity with the groove 14 of the guide rail, as shown in Figure 18 ​(b) shown. Pull down the handle 6 on the chair leg lock to press the block 5 into the groove of the slide rail, and the chair leg lock reaches the locked state, as shown in Figure 18 (c).

[0047] When the chair leg lock is quickly disassembled, as shown in Figure 18 (d), pull the spring clamping groove 7 on the chair leg lock forward, and pull the handle 6 on the chair leg lock upward, then the chair leg lock reaches the unlocked state Figure 18 (b), and then adjust the chair leg lock to the state shown in Figure 18 (a), and the chair leg lock is completed unlocking.

[0048] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the skilled in the art to understand the content of the present application and to implement it, and it cannot be used to limit the protection scope of the present application. Any equivalent transformation or modification made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application. The technical, shape and structure parts not described in detail in the present application are all known technologies.

Claims

1. A quick-release helicopter passenger seat leg lock characterized by, The rear sliding block (1), the chair leg lock adjusting block (3), and the chair leg lock connecting piece (2) are rotatably connected to the rear sliding block (1), the rear chair leg lock chair leg connecting piece (4) passes through the chair leg lock adjusting block (3), the chair leg lock connecting piece (2) and the rear chair leg lock chair leg connecting piece (4) are connected to the chair leg of the seat, the stop block (5) is arranged on the rear sliding block (1), one end of the supporting rod (9) is connected to the rear sliding block (1), the other end of the supporting rod (9) rotatably connects the handle (6) by passing through the stop block (5), the supporting rod (9) is provided with a spring (14), the lower part of the stop block (5) has a convex platform capable of cooperating with the groove of the sliding rail, the lower part of the handle (6) has an arc structure, the handle (6) is connected with the handle cover (8) on one side, the spring clamping groove (7) is located between the handle cover (8) and the handle (6), the spring (13) is arranged in the groove on the handle cover (8), the spring clamping groove (7) has a hole at the position corresponding to the spring (13), one end of the hole has a bending section two (704) bent towards the groove on the handle cover (8), the spring clamping groove (7) has a bending section three (705) on the side, when the handle (6) is in a horizontal state, the bending section three (705) can hook the square platform (501) on the upper part of the stop block (5), the upper part of the chair leg lock connecting piece (2) has a circular convex platform on both sides, the circular convex platform on one side is inserted into the center mounting hole on the rear chair leg lock chair leg connecting piece (4), and the circular convex platform on the other side of the chair leg lock connecting piece (2) is inserted into the chair leg mounting hole.

2. A quick release helicopter passenger seat leg lock as claimed in claim 1, wherein, The lower part of the handle (6) is rotatably connected to the supporting rod (9) through a pin (12), and the pin (12) is eccentrically arranged.

3. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The rear sliding block (1) has "8" shaped convex platforms (15) on both sides, and the "8" shaped convex platforms (15) can slide along the groove of the sliding rail.

4. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The upper part of the rear sliding block (1) and the lower part of the chair leg lock connecting piece (2) each have a plurality of connecting ears in the vertical direction, the connecting ears on the rear sliding block (1) and the connecting ears on the chair leg lock connecting piece (2) are alternately inserted and matched, and the lock body rotating shaft (10) passes through the through holes of the connecting ears on the rear sliding block (1) and the connecting ears on the chair leg lock connecting piece (2).

5. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The rear sliding block (1) has a small convex platform, and the bottom surface of the stop block (5) has a hole capable of cooperating with the small convex platform.

6. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The hole at the position corresponding to the spring (13) on the spring clamping groove (7) is a bullet-shaped hole (701), the rectangular section of the bullet-shaped hole (701) is used for placing the spring (13), and the semicircular section of the bullet-shaped hole (701) and the waist-shaped groove provided on the spring clamping groove (7) are used for connecting the screw and the handle (6).

7. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The end of the spring clamping groove (7) has a bending section one (703).

8. A quick release helicopter passenger seat leg lock as defined in claim 1 wherein, The side edge of the handle cover (8) has a rectangular protrusion.

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