JPH0631967Y2 - Link type leg rest - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a link type leg rest which is installed in a seat of an aircraft or a vehicle and is flipped up and used in front of the seat.

[Conventional technology]

Conventionally, as shown in FIG. 6, a so-called long groove type guide 54 having an arc-shaped guide long groove 53 is attached to a lower portion of a front beam 52 supporting a base frame 51 of a seat, and the guide long groove 53 of the guide 54 is attached. A roller 57 provided at the base end of a supporting arm 56 extending from the lower surface of the leg rest 55.
Is slidably engaged with the front beam 52 so that the leg rest 55 is rotatable in the vertical direction, and
For example, a locking device 58 for pushing the supporting arm 56 from its rear side is interposed between the supporting arm 56 and the rear beam 59 by a gas spring type mechanism, and the leg device 55 is supported by the locking device 58 in an appropriately inclined posture or a substantially horizontal posture. There has been proposed a leg rest configured so as to be capable.

According to the conventional leg rest, when not in use, the leg rest 55 is hung and stored under the front beam 52, and the passenger operates the operation unit (not shown) to lock the lock device 58. The leg rest 55 can be operated to be flipped up at an appropriate angle with respect to the seat bottom 60 for use.

[Problems to be solved by the device]

However, in the leg rest using the conventional long groove type guide, when the leg rest 55 hanging and stored below the front end portion of the seat is flipped up at a predetermined angle with respect to the seat bottom 60, the roller 57 is temporarily empty. Guide long groove 5 formed around a point
Since the roller 57 is rotated within the guide groove 3, the roller 57 is not caught in the guide long groove 53 and does not slide smoothly, and the frictional resistance makes the rotation operation heavy and requires a large force for operation. Had.

In addition, the support arm 56 extending from the lower surface of the leg rest 55.
Is small and the turning movement distance is short, the legrest 55 cannot be flipped up unless it is pushed out strongly by the locking device 58 from the rear. Therefore, the supporting arm 56 is enlarged to increase the turning movement distance. There is a problem in that the lock device 58 having a large stroke is required to push it out.

Further, in the leg rest using the long groove type guide, in order to increase the flip-up angle of the leg rest 55,
A large long groove type guide 54 must be attached to the front beam 52, and this guide 54 has a drawback that it interferes with a seated person when sitting.

The present invention was devised in view of the above problems, and can easily and smoothly perform a leg-rest flip-up operation, and even if the drive locking device has a small stroke, the leg-rest can be The object is to provide a link type leg rest that can be greatly flipped up.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the link type leg rest according to the present invention has a short link on the front side and a rear side on each bracket which are erected at appropriate intervals on the lower part of the front beam which constitutes the seat bottom frame of the seat. The base ends of a pair of double link mechanisms each consisting of a long link are vertically movably mounted, and between the tip ends of the links of the double link mechanism, legrests arranged in a suspended state on the front leg side are rotated on both side surfaces thereof. It is movably supported, and a rod of a lock device for pushing and locking the leg rest is connected to the tip end of the leg rest, and the rear end of the lock device is fixed to a bracket formed on the front beam. It is what

Further, a footrest can be connected via supporting arms mounted on both side surfaces of the front end of the legrest, and the footrest can be supported so as to be deployable between the upper surface retracted position of the legrest and its front use position interval.

[Action]

Thus, according to the above configuration, when the tip of the leg rest is pressed from the rear by the rod of the locking device, the pair of link mechanisms composed of the long link and the short link supporting the leg rest has the base end portion of each link. Since the long link draws a larger arc line than the short link and rotates around the center, the leg rest can be flipped up above the front of the seat and supported in a state of being inclined at a predetermined angle.

In addition, a foot rest that is polymerized and folded on the leg rest,
The legrest and the footrest can be used in an integrated manner by expanding to the front of the legrest.

Also, when storing the leg rest in a hanging state, the footrest is folded back to the legrest side and overlapped, and if the tip of the legrest is pulled rearward by the rod of the locking device, it will be stored in the state of hanging down to the lower front of the seat. be able to.

〔Example〕

An embodiment of a link type leg rest according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a structure of an aircraft seat that constitutes a link type leg rest, and 1 is a front leg that supports a base frame 2 and 3 is a rear leg. A front beam 4 is attached to the upper ends of the front legs 1, and a rear beam 5 is attached to the upper ends of the rear legs 3, and a seat bottom 6 is placed on a base frame 2 formed between the front and rear beams 4, 5. The seat back 7 is erected rearward to form a seat.

FIG. 2 and FIG. 3 show a double link mechanism constituting a link type leg rest according to the present invention, which is erected at a proper interval below the front beam 4 supporting the base frame 2 of the seat. Bracket 8 extending in the front-rear direction
On the other hand, on the front side 8a, the base end portions A1 and B1 of the pair of double link mechanisms 9 (A> B) composed of the long links A having different lengths and the shorter links B are attached so as to be vertically movable, The tip portions A2 and B2 are pivotally attached to the side surface of the frame 10a of the leg rest 10 at appropriate intervals. The mounting positions of the base end portions A1 and B1 of the double link mechanism 9 with respect to the bracket 8, the pivot points of the tip portions A2 and B2 of the link mechanism 9 in the leg rest 10, and the lengths of the link A and the link B are Various modifications are made according to the shape of the seat bottom 6, the shape of the bracket 8 and the flip-up angle of the leg rest 10.

Reference numeral 11 is a lock device such as a hydraulic cylinder having a retractable rod 12. The locking device 11 includes a leg link 10 and a double link mechanism 9 for the bracket 8.
In order to rotate the shaft-attached portion of the leg-up center upward, the bracket 13 is provided vertically on the rear surface of the tip portion 10b of the leg rest 10 and the rear side of the bracket 8 that is erected on the lower portion of the front beam 4. It is interposed between 8a. In this embodiment, the rear end portion 11a of the locking device 11 is fixed to the locking bracket 14 formed at an appropriate portion of the front beam 4, and the legrest 10 is pressed at the center of the back surface of the legrest 10 to stabilize the legrest 10. It is designed to bounce forward and upward. The lock device 11 is operated by an operation unit (not shown) mounted on a side armrest, a center armrest, or the like,
When the rod 12 formed at the tip thereof is extended, the leg rest 10 is moved forward and rotated upward by a predetermined angle, and at that time, the long link A of the double link mechanism 9 makes a larger arc than the short link B. The leg rest 10 is drawn and flipped up, and is supported at the front and rear positions of the side surface of the leg rest 10 to be held at a predetermined angle.

Instead of the lock device 11 such as the hydraulic cylinder, a rack or other structure having a forward / backward movement can be used by remote operation, and the same operation as described above can be performed. Further, in the present embodiment, in order to prevent the one-sided effect of the legrest 10 from being flipped up, the locking device 11 is formed in the center of the back surface of the legrest 10. However, the locking device 11 may be formed on one side of the legrest 10. Of course, you can

At the front end of the leg rest 10, supporting arms 16, 16 for supporting a footrest 15 such as a plate on both sides of the rear end thereof are provided.
And the footrest 15 formed on the supporting arms 16 and 16 is configured to be deployable forward of the legrest 10. Reference numeral 17 is its rotation axis. Further, since the footrest 15 is embedded and housed in the groove portion 18 formed in the legrest 10 in substantially the same shape and shape as the footrest 15,
It is also possible to use the footrest 15 integrally with the leg rest 10 without unfolding.

Reference numeral 19 is a stopper that prevents the footrest 15 from over-rotating and restricts the inclination angle of the footrest 15, and allows the shaft to project laterally from one side or both sides of the legrest 10 and supports the arms 16, 16 It has a structure in which the edges of the abutment stop against rotation. In addition, this stopper 1
The inclination angle of the footrest 15 can be adjusted in several stages by changing the mounting position of the footrest 9.

In the link type leg rest according to the present invention, as shown in FIG. 4, the direction of the rod 12 of the locking device 11 and the direction of the force (arrow X) at the time of storage are at a favorable angle θ,
The leg rest 10 can be stored with a weak force.

On the contrary, in the direction (arrow Y) of the force to bounce the leg rest 10, the angle θ of the bounce up increases as the leg rest 10 rises, so that the leg rest 10 can be bounced up with a strong force.

Next, a method of using the link type leg rest according to the present invention will be described with reference to FIGS. 5 (a), (b) and (c).

When using the leg rest, as shown in FIG. 5 (a), a lock device 11 operated by an operation unit (not shown) mounted on the armrest or the like is used to move the leg through the double link mechanism 9. Push the rest 10 forward,
As shown in FIG. 5 (b), the leg rest 10 is raised. Next, deploy the footrest 15 that is polymer-folded on the legrest 10 in front of the legrest 10,
The leg rest 10 and the foot rest 15 can be used integrally.

When using the footrest 15, see Fig. 5 (c).
As shown in, the footrest 15 may be expanded.
In addition, when only the leg rest 10 is used, as shown in FIG.
As shown in (b), the leg rest 10 may be used in the retracted state without expanding the footrest 15.

If the legrest is not used, the first figure 5 (a)
As shown in FIG. 5, after the footrest 15 is superposed on the leg rest 10, the leg rest 10 is stored in a state of being hung in front of the lower part of the seat. Further, the link type leg rest itself functions to prevent the baggage from moving forward.

[Effect of device]

Since the link type leg rest according to the present invention is constructed as described above, since the double link mechanism is used as a means for supporting the leg rest, the leg rest can be easily and smoothly flipped up to the front upper side of the seat. You can

Especially, since the mounting position of the lock device for flipping up the leg rest and the mounting position of the base end of the double link mechanism supporting the leg rest are close to each other, even if the stroke of the locking device is small, Can be stowed as well as flipped up to a high position.

Also, deploy the footrest in front of the legrest,
Since the leg rest and the footrest can be used integrally, the seated person can use the legrest in a free posture and can maintain a comfortable posture.
The practical effect after implementing the present invention is extremely large.

[Brief description of drawings]

1 is a side view showing an embodiment of a link type leg rest according to the present invention, FIG. 2 is an enlarged side view showing a double link mechanism, FIG. 3 is a front view of a main part of the leg rest, and FIG. 4 is a lock. FIG. 5 is an explanatory view showing the working direction of the device, FIG. 5 shows an operating state of the link type leg rest according to the present invention, and (a) is a side view showing a state in which the leg rest is suspended and stored in the front part of the seat. FIG. 6, (b) is a side view showing a state in which the legrest is flipped up to the front of the seat, (c) is a side view showing a state in which the footrest is further deployed forward, and FIG. 6 is a conventional long groove type legrest device. It is the partially cutaway side view which shows. 2 ... Base frame, 4 ... Front beam 8 ... Bracket, 9 ... Double link mechanism 10 ... Leg rest, 11 ... Lock device 12 ... Rod, 15 ... Foot rest 16 ... Support arm

Claims (2)

[Scope of utility model registration request] 1. A pair of double link mechanisms each consisting of a short link on the front side and a long link on the rear side of each bracket, which are erected at appropriate intervals below the front beam constituting the seat bottom frame of a seat. The ends are attached so that they can move up and down, and between the respective link tips of the double link mechanism, a leg rest disposed on the front leg side in a suspended state is rotatably supported on both side portions thereof, and at the tip of the leg rest. A link type leg rest, characterized in that a rod of a lock device for pushing and locking this is connected and a rear end portion of the lock device is fixed to a bracket formed in the front beam. 2. A footrest is connected via supporting arms attached to both front end side surfaces of the legrest, and the footrest is supported so as to be deployable between an upper surface storage position of the legrest and a space between the front use positions thereof. The link type leg rest according to claim 1.