JPS6226139A - Seat sliding device - Google Patents

Abstract

PURPOSE:To enable a rider to smoothly get on or off a rear seat by forwardly moving a seat at a high speed in spite of a power seat sliding device. CONSTITUTION:The position of a seat can be longitudinally adjusted by moving a screw bar 6 and an upper rail 2 by the force of a motor 5. On the other hand, a rapid feed can be carried out merely by releasing the locking of a lock lever 19 to release connection between the upper rail 2 and a seat frame bracket 12. Thereby, the seat frame bracket 12 can be moved forwardly without being subjected to any restraint and, accordingly, the seat can also be moved forwardly together with the seat frame bracket 12. This movement has no connection with the speed of rotation of the motor 5 and, therefore, can be carried out at a high speed.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a seat slide device that moves an automobile seat in the front and back direction, and more specifically, a power set (electric This invention relates to a seat slide device of formula (2).

(Prior art) When getting in and out of the rear seat of a two-door car, it is widely practiced to secure a space for getting in and out by folding the seatback of the front seat forward and moving the entire seat forward at once. Also, when the seat back is folded forward, the entire seat automatically moves forward (walk-in mechanism).
Cars equipped with seat slide devices have also become popular.

However, this applies to cars that use a manual seat slide device; in cars that use a power seat slide device, you press a switch to drive the motor and seat the seat in the same way as a normal seat position adjustment operation. The only option was to move the entire vehicle forward to create more space for boarding and alighting.

(Problem to be Solved by the Invention) However, since the seat movement in the power set seat slide device is slow, if this power set seat slide device is adopted in a two-door car, it will be difficult to move the seat to the rear seat. There was a problem in that it was not possible to get on and off the vehicle smoothly.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a seat slide device with a power set that can move the seat forward at high speed when getting in and out of the rear seat. It's about making it happen.

(Means for Solving the Problems) The present invention solves the above problems by slidably fitting an upper rail into a lower rail fixed to the floor side, and attaching a seat frame bracket to the upper rail. A screwper, which is attached movably in the longitudinal direction and is moved in the axial direction by a motor, is disposed in parallel with the upper rail, and connects the screwper and the upper rail, and connects the motor and the lower rail, and The upper rail is configured so that it can be pushed by the screwper, and is further provided with a locking means for prohibiting relative displacement between the upper rail and the seat frame bracket, and when the seat is rapidly forwarded forward, the locking means is configured to be able to move the upper rail. This feature is characterized in that it is configured to be released.

(Function) In the seat slide device of the present invention, the seat can be adjusted in the longitudinal direction by moving the screwper and the upper rail using the force of the motor. On the other hand, when performing rapid forwarding, the connection between the upper rail and the seat frame bracket can be released by unlocking the locking means. As a result, the seat frame bracket can move forward without any restrictions, and the seat can also move forward together with the seat frame bracket. This movement is independent of the rotational speed of the motor, so it can be performed at high speed.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 to 3, 1 is a lower rail fixedly installed on the floor side, and 2 is an upper rail that is slidably fitted to the lower rail 1. As shown in FIGS. Lower rail mounting brackets 3 for fixing the lower rail 1 to the floor are fixed to the front and rear lower surfaces of the lower rail 1. Further, a motor mounting bracket 4 is fixed to the lower surface of the intermediate portion of the lower rail 1, and a driving motor 5 is mounted to the bracket 4. Upright flanges 4a and 4b at the front and rear of this bracket 4 rotatably support the screwper 6, and the screwper 6 is moved in the front and rear direction (in the direction of the arrow) by the rotation of the motor 5. It has become. FIG. 3 shows an example of a mechanism for converting the rotation of the motor 5 into the movement of the screwper 6 in the front-back direction.

In this example, a worm 7 is connected to the output shaft of the motor 5,
A worm wheel 8 is meshed with this, and a thread is cut in the center of the worm wheel 8, and the screwper 6 is screwed into the thread.

Note that the worm wheel 8 is restricted so that it cannot move in the axial direction. Therefore, when the motor 5 is driven,
The worm 7 and the worm wheel 8 rotate, and the screwper 6 moves in the axial direction (back and forth direction).

Reference numeral 9 denotes an arm bracket that is fixed to the upper surface of the front part of the upper rail 2 in a state that projects laterally, and a screw is inserted here.
The front end of the par 60 is connected.

10 is an inner rail fixed to the side surface of the upper rail 2, 11 is an outer rail that is slidably fitted to the inner rail 10, and the outer rail 11 has a seat frame that is a bracket for attaching a seat frame or a bracket for attaching a lifter. A frame bracket 12 is fixed. A roller 13 and a steel ball 14 are arranged between the inner rail 10 and the outer rail 11,
This ensures smooth sliding between the two. Note that rollers 15 and steel balls 16 are also provided between the lower rail 1 and the upper rail 2, as is well known.

Reference numeral 17 denotes an arm fixed substantially horizontally to the seat frame bracket 12, and a lock lever 19 is pivotally connected to the arm 17 with a pin 18 so as to be horizontally rotatable. The tip of this lock lever 19 is connected to the inner rail 10. It fits into a lock hole drilled in the outer rail 11 and the seat frame bracket 12, and prevents movement of the outer rail 11 with respect to the inner rail 10, in other words, movement of the seat frame bracket 12 with respect to the upper rail 2. The inserted torsion spring 20 constantly urges rotation in the locking direction.

Further, a tip (cable end) 21b of an inch cable 21a within the cable 21 is hooked to the lock lever 19. This cable 21 (inner cable 21a)
The lock is released by rotating the lock lever 19 in the unlocking direction in synchronization with the forward folding of the seat back (not shown), and its outer cable is connected to the hanging flange on the side of the arm 17. Fixed. Further, a tension spring 23 is stretched between the seat frame bracket 12 and the lower rail 1, and this tension spring 23 causes the seat frame brackets 1 to 12 to
is biased forward.

Note that two sets of lower rail 1 and upper rail 2 are usually prepared for one seat, and these are installed side by side on the floor.
In this embodiment, only one set (one side) is illustrated.

Next, the operation of the above embodiment will be explained.

First, in normal use, the lock lever 19 is in a locked state. Therefore, if the motor 5 is rotated forward or reverse using a switch (not shown), the screwper 6 moves forward or backward relative to the motor 5, and the screwper 6 integrally moves the upper rail 2 and the seat frame bracket I. :′! Therefore, the position of the seat can be adjusted in the forward direction.Next, if it becomes necessary for a passenger to get in or out of the rear seat, move the seat back forward using a handle or pedal (not shown). By this, the inner cable 2 inside the cable 21
1a is pulled in, and the lock by the lock lever 19 is released. Therefore, the seat frame bracket 12 is rapidly forwarded forward with respect to the upper rail 2 by the force of the tension spring 23 and stopped at the walk-in position.

To return to normal use from the walk-in position, simply raise the seat back and push it back. As a result, the tension on the inner cable 21a of the cable 21 is released, and the lock lever 19 is released from the torsion spring 21a.
When the seat frame bracket 12 is rotated in the locking direction again by 0 and returned to the predetermined position, the lock lever 1
9 is inserted into the lock hole, and the seat slide device returns to the locked state, that is, the normal use state.

Note that the present invention is not limited to the above embodiments. For example, it is also possible to arrange the seat slide device having the structure shown in FIG. 1 symmetrically and to synchronize the lock levers to obtain a seat slide device of the both-side lock type. Further, the combination of the lower rail 1 and the upper rail 2 may be stacked in two stages, upper and lower, to obtain the operation as in the above embodiment.

(Effects of the Invention) As explained above, according to the present invention, a seat slide device is realized which is a seat slide device with a power set but can move the seat forward at high speed when getting on and off the rear seat. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing essential parts of an embodiment of the present invention, FIG. 2 is a front sectional view of the embodiment of FIG. 1, and FIG. 3 is an explanatory diagram showing the internal structure of a drive section. 1...Lower rail 2...Upper rail 3...
・Bracket 4...Motor mounting bracket 5...Motor 6...Screwper 7・
... Worm 8 ... Worm wheel 9 ...
・Arm bracket 1o...Inner rail 11...Outer rail 12
... Seat frame bracket 13.15 ... Roller 14.16 ... Steel ball 17 ... Arm 18 ... Bin 19 ... Lock lever 20 ... Torsion spring 21 ... Cable 23 ...・Tension spring patent applicant Shiraki Metal Industry Co., Ltd. Representative Patent attorney Fuji Ijima 1 person Figure 2

Claims (1)

[Claims] An upper rail is slidably fitted to a lower rail fixed to the floor side, a seat frame bracket is attached to the upper rail so as to be movable in the longitudinal direction of the upper rail, and a screw bar is moved in the axial direction by a motor. The screw bar is arranged in parallel with the upper rail to connect the screw bar and the upper rail, and the motor and the lower rail are connected so that the upper rail can be pushed by the screw bar. 1. A seat slide device, characterized in that a locking means for prohibiting relative displacement with a frame bracket is provided, and the locking by the locking means is released when the seat is rapidly forwarded.