JPS6226137A - 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:When adjusting the position of a seat, a screw bar 6 is connected to a rail. Therefore, the position of the seat can be longitudinally adjusted by moving the upper rail 2 by the force of a motor 5. On the other hand, when carrying out a rapid feed, this connection is released. Thereby, the upper rail 2 can be forwardly moved without being restrained by the screw bar 6, also moving the seat forwardly together with the upper rail 2. 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 seat back of the front seat forward and moving the entire seat forward. It also has a mechanism (walk-in mechanism) that automatically moves the entire seat forward when the seat pack is in trouble.
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 movement of the seat through the power-equipped seat slide device is slow, if this power-equipped seat slide device is adopted in a two-door car, passengers in the rear seats There was a problem that it was difficult 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 A with a power set that can move the seat forward at high speed when getting in and out of the rear seat. The aim is to realize this goal.

(Means for Solving the Problems) The present invention, which solves the above problems, includes a lower rail fixed to the floor side, an upper rail slidably fitted to the lower rail, and a motor as a drive source. , a screwper arranged in parallel with the rail and capable of relative movement with the motor; the motor is attached to one of the lower rail and the upper rail, and the screwper is connected to the other rail. In addition, when the sheet is rapidly forwarded forward, the other rail and the screwper are disconnected from each other.

(Function) In the seat slide device of the present invention, the screwper is connected to the rail when adjusting the seat position. Therefore, by moving the upper rail using the force of the motor, the position of the seat can be adjusted in the longitudinal direction. On the other hand, when performing fast forwarding, this connection is released. As a result, the upper rail moves forward without being restricted by the screwper, and the seat also moves forward together with the upper rail. 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 4, 1 is a lower rail fixed to the floor side, 2 is an upper rail fixed to the seat side, and these are slidably fitted. Lower rail mounting brackets for fixing the lower rail 1 to the floor are fixed to the front and rear lower surfaces of the lower rail 1, but only the front lower rail mounting bracket 3 is shown in the drawing. Furthermore, on the lower surface of the middle part of the lower rail 1,
A motor mounting bracket 4 is fixed, and the bracket 4
A driving motor 5 is attached to.

Upright flange portions 4a at the front and rear of this bracket 4
, 4b rotatably support the screwper 6, and the rotation of the motor 5 causes the screwper 6 to move in the front-rear direction (in the direction of the arrow). FIG. 4 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 a motor 5, and a worm wheel 8 is meshed with the worm 7. A thread is cut in the center of the worm wheel 8, and the screwper 6 is screwed into the worm wheel 8. 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 9.10 denotes a bracket for mounting a locking mechanism, which is fixed to the upper surface of the front and rear portions of the upper rail 2 in a state in which it projects laterally. First, regarding the locking mechanism of the bracket 9, a through hole is bored in the center of the pair of wide hanging flanges 9a of the bracket 9, into which the screwper 6 can be moved freely in the front and back direction. It is inserted. Further, a bottle 11 is inserted into the through hole of the pair of narrow hanging flanges 9b, and the lock member 1 is inserted with the bottle 11.
2 is pivotally supported for vertical rotation. As shown in FIG. 2, the locking member 12 has a substantially S-shape, and the four portions 12a formed by one curve form an annular locking groove 6a provided near the front end of the screwper 6 during locking. It is designed to fit. Incidentally, wedge-shaped inclined surfaces 12b and 6b are formed at the front and rear ends of the recess 12a and the locking groove 6a, respectively, so that the two can be fitted accurately and reliably.

Also, the recess 1 is formed so as to prevent the screwper 6 from rotating.
Serrations are formed on each surface of the locking groove 2a and the locking groove 6a. In addition to the through hole 12c which is the center of rotation of the locking member 12, through holes 12 (1, 12e) are bored therein. Cable end) 13b is a hole into which the bottle 14 is press-fitted so that it does not come out from the slit 12f of the locking member 12. On the other hand, the through hole 12
C is a hole into which the other end of the tension spring 15, one end of which is hooked to the through hole 9C of the flange portion 9a of the bracket 9, is inserted. Here, the tension spring 15 constantly urges the locking member 12 to rotate in the locking direction. Further, the cable 13 has an inner cable 13a that pulls the locking member 12 in the unlocking direction in synchronization with the forward folding of the seatback (not shown) to release the lock, and the outer cable is connected to the extension of the bracket 9. It is fixed at the exit.

The locking mechanism of the bracket 10 portion has the same structure as that of the bracket 9 portion. Therefore, the parts that correspond to the constituent parts of bracket 9 are dashed with the same number.
, and the explanation thereof will be omitted. However, although the front end 6C of the screwper 6 has a tapered surface, the rear end does not have a particularly tapered surface.

Furthermore, a tension spring 16 is stretched between the bracket 10 and the bracket 3, and the upper rail 2 is biased forward by this tension spring 16.

Note that two sets of the lower rail 1 and the upper rail 2 are usually prepared for one seat and arranged side by side, but in this embodiment, only one set (on one side) is shown.

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

First, under normal use, the tension spring 15
．． 15' allows the recess 12 of the locking member 12.12'
a, 12a' is the locking groove 5a of the screwper 6,
5a', and the screwper 6 is in a state connected to the upper rail 2.

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 upper rail 2 moves integrally with the screwper 6. That is, the upper rail 2 moves around the lower rail 1 in the front-rear direction, and the position of the seat in the front-rear direction can be adjusted. This is exactly the same operation as a conventional power set seat slide device. Next, when it becomes necessary for a passenger to get on or off the rear seat, the seat back is folded forward using a handle or pedal (not shown).

As a result, the inner cables 13a, 13a' in the cable 13.13' are pulled in, and the locking member 12.1 is pulled in.
2' rotates counterclockwise in FIG. 1, and the locking member 12.
12' recess 12a.

128' and the locking grooves 68, 6a' of the screwper 6 are disengaged. Therefore, at the same time as the fitting is released, the upper rail 2 is quickly moved forward by the force of the tension spring 16 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 inch cable 13a of the cable 13.13',
The tension on 13a' is released and the locking member 12.12'
is rotated again in the locking direction by the tension spring 15.15'. Therefore, the locking member 12' comes into contact with the screwper 6, and the locking member 12 comes into sliding contact with the screwper 6 after the upper rail 2 returns to a predetermined position. When the upper rail 2 is further returned, the four parts 12a, 12a' of the lock member 12.12' fall into the locking grooves 5a, 6a' of the screwper 6, returning to the locked state, that is, the normal use state.

Here, the reason why the front end 6C of the screwper 6 is made into a tapered surface is that when the upper rail 2 returns, the locking member 1
This is to avoid a situation where the front end surface of the screwper 6 hits the rear surface of the screwdriver 2 and becomes unable to return to the rear. Of course, the maximum rotation angle of the locking member 12 in the locking direction is also kept within a certain range in consideration of this point.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, two locking mechanisms are provided, but only one of them may be provided.

Also, the motor 5 was attached to the lower rail 1 and the screwper 6 was connected to the upper rail 2, but the motor 5 was attached to the upper rail 2 and the screwper 6 was connected to the lower rail 1.
It is also possible to configure it so that it is connected to.

(Effects of the Invention) As explained above, according to the present invention, the seat slide device is capable of moving the seat forward at high speed when getting on and off the rear seat, although it is a power set seat slide device. can be realized.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of an embodiment of the present invention, FIG. 2 is an explanatory diagram of the screwper and lock member in FIG. 1,
FIG. 3 is an explanatory diagram of a method of locking the inner cable to the locking member, and FIG. 4 is an explanatory diagram showing the internal structure of the drive section. 1...Lower rail 2...Upper rail 3...
・Bracket 4...Motor mounting bracket 5...Tanabata 6...Screwper 5a
, 5a' ... Locking groove 7°°° Worm 8 ... Worm wheel 9
．． 10... Bracket for installing lock mechanism 11.11'
, 74... Bin 12.12'... Lock member 12a, 12a'... Recessed portion 13.13'... Cable 13a, 13a'... Inch cable 15.15'
, 16... Tension spring patent applicant Shiraki Metal Industry Co., Ltd. Agent Patent attorney Fuji Ijima 1 person

Claims (3)

[Claims] (1) Relative movement between a lower rail fixedly installed on the floor side, an upper rail slidably fitted to the lower rail, a motor as a drive source, and the motor arranged in parallel with the rail is prevented. The motor is attached to one of the lower rail and the upper rail, and when the screw bar is connected to the other rail and the sheet is rapidly forwarded, the motor is attached to the other rail. A seat slide device characterized in that the connection between the screw bar and the screw bar is released. (2) The seat slide device according to claim 1, wherein the motor is attached to the lower rail and the screw bar is connected to the upper rail via a locking mechanism. (3) A screw bar having an annular locking groove is used as the screw bar, and a locking member that engages and disengages from the locking groove by rotation is attached to the upper rail. The seat sliding device according to scope 2.