JP2603080B2 - Automatic drive mechanism for foot rest device for seat - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic driving mechanism for a foot rest device for a seat mounted on a passenger seat of a vehicle, a ship, an aircraft, or the like.

[Conventional technology]

Conventionally, seat feet used for passenger seats of vehicles, ships, aircrafts, and the like are generally constituted by a stand separate from the seats stored under the seats when not in use, and when used, It can be used by pulling it out from under the seat, or it has a plate-like structure fixed to the rear end of the leg of the front seat. The position of the seat and the angle of use of the reclining device, or the physique of the user In some cases, the purpose of rest was not always exhibited.

Therefore, in order to solve the above-mentioned problem, the applicant of the present application has a structure in which the footrest is slidably movable in the front-rear direction with respect to the seat, and is integrally formed so as to be rotatable in the vertical direction. By inventing a seat footrest device capable of manually adjusting the seating position to a preferable position with respect to the user's physique or seat use angle by changing the meshing position of the rack, and applying for the invention (Japanese Patent Application No. −027674).

[Problems to be solved by the invention]

However, in the conventional structure in which the adjustment position is changed according to the engagement position of the rack, since only the adjustment can be performed for each pitch of the rack, there is a problem that each adjustment width is wide and it is not possible to meet the demand for fine adjustment. . Further, when manually operating the above-mentioned seating device, it is extremely labor-intensive and it is extremely difficult for the user to adjust the position while sitting on the seat.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide an automatic driving mechanism for a footrest device for a seat, which is easy to operate and can adjust the position at a desired position.

[Means for solving the problem]

An automatic drive mechanism for a foot rest device for a seat according to the present invention is a footrest and a seat capable of storing the footrest between legs at a lower portion of a seat bottom. Footrest elevating means for pivotally moving the link mechanism forward while movably supporting the link mechanism, and a footrest longitudinal slide for sliding the footrest in the front-rear direction with respect to the link mechanism at a lowered position of the link mechanism. The gist is that the moving means is constituted by an electric device and the footrest elevating means and the footrest front-rear sliding means are cooperatively operated by a cam mechanism.

[Action]

Therefore, the use or storage of the footrest can be performed by electric power, and the seat user can move the footrest to a desired position by the operation switch in the seated state.

Further, since the position of the footrest can be supported at the position where the operation switch is stopped, stepless adjustment is possible, and fine adjustment according to the user's physique or preference becomes possible.

〔Example〕

Hereinafter, an embodiment of an automatic driving mechanism for a foot rest device for a seat according to the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a footrest which is stored in a lower portion of a seat bottom 3 of a passenger seat 2 and includes guide grooves 4, 4 extending in the front-rear direction on both sides, and is formed between the guide grooves 4 and the seat frame 5. The structure is supported by the link mechanism 6. The link mechanism 6 includes a support block 7, a bracket 8 and a main link 9, and the bracket 8 is attached to the support block 7 fixed to the seat frame 5.
While pivotally at one end rotatably with respect to the other end of the bracket 8 via a roller 10 fitted freely the guide groove 4 and sliding, forming a pivot trajectory shown in the figure L ₁ The configuration is as follows. The main link 9, as well as pivotally to one end rotatably support block 7, the other end via a roller 11 fitted freely the guide groove 4 and the sliding is shown in the figure L ₂ A parallel link is formed by forming a turning trajectory. The footrest 1 is supported by both front and rear rollers 10 and 11 fitted into the guide groove 4.

Also, 30 is located between the two legs in the lower part of the seat bottom 3, and is used to automatically drive the footrest 1 in a forward and backward direction and to rotate in a vertical direction. Mechanism. The seat foot rest automatic driving mechanism 30 includes a forward / backward moving structure 31 and a vertical moving slide block 32, each of which is independently slidably pivoted in the forward / backward direction and has a forward / backward moving structure 31. On the upper surface of the footrest 1, an end stopper 33 is erected at the rear end, and a storage rod 34 which is engaged with a locking rod 34 protruding from the rear end of the lower surface of the footrest 1 is provided. The locking projection 35 is provided in a protruding manner. The front-rear moving structure 31 drives a pinion 37 meshed with a rack 36 arranged in the sliding direction in the front-rear direction by a motor 38. And a structure driving shaft 42 which is rotatably connected via an intermediate gear 40 and a first driven gear 41 meshed with the shaft. The structure drive shaft 42 is provided with a clutch mechanism 45 having a clutch rod 44 which is separated from and connected to a clutch cam 43 cooperating with the vertical movement block 32 in parallel.
When is pressed in the direction of arrow A, the rotation of the pinion 37 and the rotation of the structure drive shaft 41 act so as to be cut off.

A vertically moving shaft 48, which is axially mounted on a second driven gear 47 meshed with the main driving gear 39, has a pinion meshed with a rack 46 arranged side by side in the sliding direction with respect to the vertically moving slide block 32. Along with the shaft 49, the clutch mechanism 50 provided on the vertical movement shaft 48 is adapted to interrupt the rotation drive by the swing of the suspension type clutch rod 51, and the operating connecting rod 52 pivotally attached to the swing end. A roller 53 having a roller 53 axially attached to an end of the clutch cam is fixed in the sliding direction with respect to the longitudinal structure 31.
The clutch lever 54 swings in the direction of the arrow B at the end of the clutch cam 54 (the position where the front-rear moving structure 31 is most protruded), and the clutch mechanism 50 rotates. The structure is connected. The seat-carrying-device automatic drive mechanism 30 having the above-mentioned structure is provided with the link mechanism with respect to a guide hole 56 in a tendency direction formed in a footrest push-up member 55 protruding on both sides of a tip end portion of the vertically moving slide block 32. 6
Are freely slidably fitted with pin shafts 57 projecting from both brackets 8 so that the link mechanism 6 can be moved up and down in the direction of arrow C.

When the foot rest 1 is used and the drive motor 38 is driven when the foot rest 1 is used, the automatic driving mechanism 30 for the seat
Since 45 is “connected” and another clutch mechanism 50 is “separated”, the forward / backward moving structure 31 moves forward together with the rack 36 meshed with the pinion 37. By this movement, the footrest 1 is pressed by the end stopper 33, and the two rollers 10, 11 of the link mechanism 6 slide along the guide grooves 4, and are pushed forward from under the seat 2. At this position, the roller 53 of the clutch mechanism 50
And the rack 46 meshes with a pinion 49 pivotally mounted on a vertical movement shaft 48 to swing the clutch mechanism 50 in the direction of arrow B via the operating connecting rod 52 and the extending clutch rod 51. ,
Slide block 32 for vertical movement integrated with the pinion 49
Slides in the direction of arrow D. The movement of the vertical movement slide block 32 causes the clutch cam 43 integrated with the rack 46 to press the clutch rod 44 of the clutch mechanism 45 in the direction of arrow A.
31 advance stops at that position. When the vertical movement slide block 32 is moved forward, the pin shaft 57 of the link mechanism 6 is moved in the direction of arrow C, to slide along the guide hole 56, the rollers 10 and 11 respectively locus L _1, L Move up along ₂ As a result, the footrest 1 can be displaced up and down at a position in front of the seat 2, and by stopping the motor 38, the footrest 1 can be set at a desired position.

When the footrest 1 is stored under the seat 2, the motor 38 is rotated in reverse to perform the above-described movement, and the locking rod 34 of the footrest 1 engages with the storage locking projection 35. Then, the vehicle is reliably pulled under the seat 2 by the back-and-forth moving structure 31.

〔The invention's effect〕

Since the present invention is configured as described above, when using or storing the footrest stored under the seat, the access is driven by the motor, not only does not require labor, but also sets the adjustment position steplessly. It has excellent characteristics such as being able to perform.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an automatic driving mechanism for a foot rest device for a seat according to the present invention, FIG. 2 is a perspective view of the same main part, FIG.
FIG. 4 is a plan view of the same, and FIG. 5 is a schematic side view showing a use state of the footrest. DESCRIPTION OF SYMBOLS 1 ... Footrest, 4 ... Guide groove 6 ... Link mechanism, 10,11 ... Roller 30 ... Automatic drive mechanism for foot rest device for seat 31 ... Structure for longitudinal movement 32 ... Slide block for vertical movement 36, 46… Rack, 37,49… Pinion 38… Motor 42… Structure drive shaft 43,54… Clutch cam 44… Clutch rod, 45,50… Clutch mechanism 48… Vertical movement shaft, 51… ... clutch rod 52 ... operating rod 55 ... footrest push-up member 56 ... guide hole, 57 ... pin shaft

Claims (1)

(57) [Claims] 1. A footrest and a seat capable of being stored between legs of a lower portion of a seat bottom, wherein the footrest is movably pivoted from a lower portion of the seat to a front position by a link mechanism pivotally mounted on a seat frame; A footrest lifting / lowering means for swinging and rotating the link mechanism forward, and a footrest front / rear sliding means for sliding the footrest in a forward / backward direction with respect to the link mechanism at a lowered position of the link mechanism by an electric device. An automatic drive mechanism for a footrest device for a seat, wherein the footrest elevating means and the footless front-rear sliding means are operated in cooperation by a cam mechanism.