JPH0339073Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a mounting shaft mechanism of a recline lock used in a reclining mechanism of an aircraft passenger seat.

(Prior Art) A reclining mechanism for an aircraft passenger seat has been conventionally equipped with a reclining mechanism as shown in FIG. As shown in FIG. 6, vertical frames 50A, 50B, 5 forming a cushion frame for each seat section
Recline locks 51A, 51B,
It is connected via 51C. The connecting portion between the vertical frame 50 and each recline lock 51 is as follows.
The mounting shaft 5 with a flange is inserted into the shaft hole 52 of the vertical frame 50 so that the tip of the recline lock 51 rotates by a small angle as the angle of the back seat is adjusted.
3, and it is possible to adjust the tilt independently for each seat section.

(Problem to be Solved by the Invention) However, according to the above configuration, the flanged mounting shaft 53 is attached to each vertical frame 50A, 50B, 50C.
Since only one recline lock 51 can be mounted individually, machining must be performed to attach the recline lock 51 to each seat section, which not only increases production costs, but also requires special decoration on the outer surface of the outermost vertical frame 50C. The structure is such that the panel 54 is attached to the recline lock 51C, and the recline lock 51C cannot be disassembled without attaching or detaching the decorative panel 54 during maintenance.

This invention was made in view of the above problems,
To reduce production costs by reducing the number of machining operations on a recline lock mounting shaft part, and to provide a structure of a shaft part that allows easy disassembly work during maintenance.

(Means for Solving the Problems) The recline lock mounting shaft mechanism according to the present invention has two mounting shafts inserted into the shaft hole of a vertical frame from both sides of the shaft hole. The recline lock end of the seat adjacent to each mounting shaft end can be orthogonally connected to each other by engaging with each other in the rotational direction and being connected with some rotational play in the rotational direction.

Furthermore, prior to connecting the ends of the recline lock, sleeves that come into contact with the end faces of the shaft holes are fitted onto both of the mounting shafts, and the sleeves are fastened and fixed at the same time as the ends of the recline lock are connected to form an integral connection. The structure allows for

In order to achieve the above object, the recline lock mounting shaft mechanism of the present invention forms an interlocking joint structure that fits from the radial direction on each end of a pair of mounting shafts that can be inserted into the shaft holes respectively. , the occlusal joint structure has an appropriate amount of play in the direction of rotation,
A measure is taken in which the occlusal joint structures of both the mounting shafts are integrally connected while being positioned within the shaft hole.

In addition, a sleeve having a mounting hole corresponding to the recline lock mounting hole drilled near the outer end of the mounting shaft is externally fitted onto both mounting shafts, and the inner end is brought into contact with the end of the shaft hole to prevent the sleeve from coming off. It was made into a structure.

(Function) The recline lock mounting shaft mechanism with the above configuration is as follows:
It is now possible to simultaneously install two mounting shafts for pivoting the recline locks of adjacent seat compartments into one shaft hole drilled in the vertical frame, and the articulation is such that both mounting shafts are located within the shaft hole. Since the joint structure has an appropriate amount of play in the direction of rotation, the range of rotation of the mounting shaft as the recline lock oscillates is not mutually restricted, but can be rotated independently.
In addition, since the two mounting shafts that pivot the recline locks of adjacent seats can be installed in one shaft hole, the number of machining operations for the shaft hole is reduced, and
There is no need to install a mounting shaft on the outermost vertical frame, and it is possible to omit attaching and detaching the decorative panel during maintenance.

(Embodiment) An embodiment of the recline lock attachment shaft mechanism according to the present invention will be described below with reference to FIGS. 1 to 4.

In the drawing, 1 is a cushion frame for an aircraft passenger seat (seats 3), and 2 is a front frame.
There are four vertical frames 4A, 4 between the and rear frame 3.
B, 4C, 4D are constructed, and three recline locks 5A, which are interlocked with the back seat tilting angle of each seat section A, B, C, are installed between the vertical frames 4B, 4C and the back seat frame (not shown) links. 5B and 5C are mounted with intervening pivots.

The mounting shaft mechanism 6 according to the present invention has a shaft structure between the vertical frame 4B and the two recline locks 5A and 5B. 7A and 7B are cylindrical mounting shafts that can be rotatably inserted into shaft holes 8 drilled in the vertical frame 4B, respectively, and both mounting shafts 7
One end of A, 7B constitutes uneven occlusal joint structures 9A, 9B that fit into each other from the radial direction, and the occlusal joint structures 9A, 9B achieve axial connection when fitted. In addition, the structure has an appropriate amount of play in the rotation direction. Also 10A, 1
0B is a sleeve fitted over the mounting shafts 7A, 7B, respectively, and mounting holes 11A, 11B drilled in each sleeve 10A, 10B are drilled in the outer ends of the mounting shafts 7A, 7B, respectively. At this time, the inner ends of the sleeves 10A, 10B can come into contact with and slide against the edge of the shaft hole 8. A screw shaft portion 13A protruding from the end of the recline lock 5A is inserted into the mounting holes 11A and 12A of one of the sleeves 10A and the mounting shaft 7A, and is fastened to the mounting shaft 7A via nuts 14, 14. Other recline lock 5B
In this case, the threaded shaft portion 13B is inserted into the mounting holes 11B and 12B of the other sleeve 10B and the mounting shaft 7B, and is fastened to the mounting shaft 7B via nuts 14 and 14.

Further, the recline lock 5C provided in the seat compartment C is pivotally attached to the vertical frame 4C via a conventional attachment mechanism, and is attached to the shaft hole 8 bored in the vertical frame 4C. Insert the flanged mounting shaft 15 from one side, and insert the threaded shaft portion 13C into the mounting hole 16 drilled at the end of the protruding shaft, and fasten it to the flanged mounting shaft 15 via the nuts 14, 14. .

In the figure, reference numerals 17 and 17 are decorative panels provided on the outside of each of the vertical frames 4A and 4D.

When assembling the mounting shaft mechanism 6 with the above configuration,
Occlusal joint structure 9A, 9 of a pair of mounting shafts 7A, 7B
After inserting the sleeves 10A and 10B into the shaft hole 8 in a fitted state, keeping the occlusal part within the shaft hole 8, and inserting the sleeves 10A and 10B over the ends of both the mounting shafts 7A and 7B, the mounting holes 11A and 12A are inserted. , 11B, 12B, respectively, insert and tighten the screw shaft portions 13A, 13B of the recline locks 5A, 5B to complete the assembly. Therefore, both mounting shafts 7A, 7B are restricted from sliding in the axial direction by the sleeves 10A, 10B, and the occlusal joint structure 9
Since A and 9B are held within the shaft hole 8, their movement in the radial direction is restricted and they do not come off. In addition, since the meshing joint structures 9A and 9B are configured to have an appropriate amount of play in the rotation direction, both recline locks 5
There is no restriction on the rotation within the swing range of A, 5B, and both mounting shafts 7A, 7B rotate independently with respect to the swing of each recline lock 5A, 5B.

Also, according to the above configuration, since the two recline locks 5A and 5B can be pivotally connected to one vertical frame 4B, it is now possible to pivotally connect one recline lock 5C to the inner vertical frame 4C. Therefore, the pivot portion can be removed from the vertical frame 4D on which the decorative panel 17 is placed.

(Effects of the invention) As described above, the recline lock mounting mechanism according to the invention allows the mounting shaft to be installed independently at the same position on both sides of one frame using one shaft hole. Since it is possible to do this, not only can the processing and assembly man-hours be omitted, but also the workability during maintenance can be simplified, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of a recline lock attachment mechanism showing one embodiment of the present invention, Fig. 2 is an assembled plan view of the main parts of the cushion frame, and Fig. 3 is an enlarged partial cutaway of the main parts. 4 is a side view of FIG. 3, FIG. 5 is an assembled plan view of a main part of a cushion frame showing a conventional mechanism, and FIG. 6 is an enlarged sectional view of the same main part. 1...Cushion frame, 4A, 4B, 4
C, 4D... Vertical frame, 5A, 5B, 5C...
Recline lock, 6...Mounting shaft mechanism, 7A,
7B... Mounting shaft, 8... Shaft hole, 9A, 9B... Articulating joint structure, 10A, 10B... Sleeve, 11
A, 11B, 12A, 12B...Mounting hole, 17...
...Decoration panel.

Claims (1)

[Scope of utility model registration request] At the pivot point between the reclining lock and frame of the aircraft passenger seat reclining mechanism,
An articulating joint structure that fits from the radial direction is formed on each end of a pair of mounting shafts that can be inserted into the shaft holes on the frame side, and an appropriate amount of play is provided in the rotational direction of the articulating joint structure. 1. A recline lock mounting shaft mechanism, characterized in that the two mounting shafts are integrally connected with the occlusal joint structure portions of the two mounting shafts positioned in the shaft holes.