JPS6359891B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat position adjustment device that allows stepless and rapid position adjustment of the seat position, as well as fine adjustment.

Conventional seat position adjustment devices include a device that adjusts and fixes the seat position by drilling an appropriate number of locking holes in the lower rail of the seat slide and locking and releasing a latch provided on the upper rail. If the pitch between the holes is made smaller, the distance between the locking holes will become smaller, causing concerns about strength, and reducing the size of the locking holes themselves will also affect the durability and strength of the latch that engages with the locking holes. As a result, there is a limit to the adjustment pitch of the seat, making it difficult to select a comfortable seating position, making drivers feel uncomfortable while driving, and hindering their ability to drive. .

In addition, as a means to solve the above-mentioned drawbacks, it was considered to adjust the position of the seat by using a threaded connection between a bolt and a nut, but since the bolt or nut is rotated, the position adjustment is stepless. This poses a problem in that quick position adjustment is no longer possible.

The present invention has been made in view of the above-mentioned conventional problems, and provides a seat position adjustment device that allows quick adjustment of the seat position using bolts, and also allows fine adjustment steplessly if necessary. is intended to provide.

In order to achieve such an object, the present invention provides a seat position adjustment device provided between a seat slidably attached to a vehicle body and the vehicle body, the axial direction of which is aligned with the sliding direction of the seat, A rotatably operable bolt shaft is attached to the seat, and an engaging member having a nut portion that engages with a half circumference of the bolt shaft; and an engaging member that engages with the engaging member and detaches the engaging member by moving in one direction. an operating part that can move the engaging member to the engaged position by moving to the other side, and a working part that can hold the engaging member in the engaged position by moving to the other side and restrain movement to the disengaging position. The seat position adjustment device is characterized by a locking part having a horizontal part and an operation member having a long hole, which is fixed on the vehicle body side, and the seat position adjustment device can quickly adjust the seat position using the operation part and adjust the bolt shaft. It is designed to allow fine adjustment by rotational operation.

The present invention will be described below based on embodiments shown in the drawings.

As shown in FIG. 1, a seat position adjustment device 1 is provided between slide rails A, A, which slidably support a seat and are fixed to a vehicle body.

As shown in an enlarged view in FIG. 2, the bolt shaft 2 on which the thread 21 is carved is aligned with the sliding direction of the slide rails A, which is the sliding direction of the seat, and the bolt shaft 2 has both ends. It is rotatably attached to the underside of the seat by means of mounting brackets 22, 22. A worm wheel 23 is provided at one end of the bolt shaft 2,
This worm wheel 23 has a handle 2 at the tip.
The worm 26 at the base end of the operating shaft 25 having a diameter of 4 is engaged with the worm 26 from the right angle direction. A locking portion 3 is further fitted onto the bolt shaft 2.

To further explain the locking portion 3 with reference to FIGS. 3 to 6, the mounting flanges 41, 4 to the vehicle body
A pair of engaging members 5, 5 that clamp the bolt shaft 2 from above and below are held in a holding member 4 having an inverted groove shape. The engagement members 5, 5 have engagement pins 51, 5 that engage with vertical engagement elongated holes 43, 43, . . . bored in the side walls 42, 42 of the holding member 4 on both sides.
1, .
2,52 are formed. The engaging members 5, 5 are
It is guided by the engagement elongated holes 43, 43 and is supported so as to be movable between an engagement position where it engages with the thread 21 of the bolt shaft 2 and a disengagement position where it disengages. The operating member 6 is adjacent to one side wall 42 of the holding member 4.
is provided.

The operating member 6 includes engagement pins 51, 51,...
The elongated holes 63, 63, . The width acting portion 62 allows the engaging member 5 to be moved to the disengaged position by moving the operating plate 6 to one side, and to the engaged position by moving the operating plate 6 to the other side, and the horizontal portion 6
1 is arranged so that the engagement member 5 can be held in the engaged position by movement toward the other side, thereby restraining the engagement member 5 from moving to the disengagement position. One end is extended to form an operated arm 65. The operated arm 65 is attached to the flange 45 of the sliding support portion 44 provided on the holding member 4.
The biasing spring 6 is inserted through a sliding hole 46 drilled in the
7, the engagement pin 51 of the engagement member 5 is located in the horizontal portion 61 of the engagement elongated hole 63 and is biased to a forward position where the engagement members 5, 5 are brought into contact with each other. An operating mechanism 7 is connected to the operating member 6.

That is, the operating mechanism 7 is passed between the mounting brackets 22, 22 of the bolt shaft 2, and the operating mechanism 7 is attached to the pin shaft 7.
1 and 71, and is eccentric from the pin shaft 71 and can swing in the lateral direction as a whole, the operation bar 72 engages with an engagement notch 66 carved in the operated arm 65 of the operation member 6, and is operated. An operating lever 73 for rotating the bar 72 is attached to one end of the bar 72.

Next, the operation of the apparatus of this embodiment having the above configuration will be explained. The operating member 6 is normally biased by a biasing spring 67, so that the engaging pins 51, 51 of the engaging members 5, 5 are engaged with the horizontal portion 61 of the elongated hole 63, as shown in FIGS. are in the aligned position, and the engaging members 5,
5 are opposed and abutted, and the nut portions 52, 52 are pinch-fitted to the thread 21 of the bolt shaft 2. Therefore, relative movement between the locking part 3 and the bolt shaft 2 is restricted, so that the seat is fixed so as not to move. Further, when the seat is fixed, an external force that tries to move the seat acts, and the engaging members 5, 5 tend to move away from each other, that is, the nut parts 52, 52 of the engaging members 5, 5 and the bolt shaft. Even if a force acts in a direction that tends to disengage the threads 21 of 2, the engaging pins 51, 51 of the engaging members 5, 5 are engaged with the horizontal portion 61 of the elongated hole 63. Therefore, since the locking portion 3 does not move in a direction perpendicular to this, the engagement between the locking portion 3 and the bolt shaft 2 will not come off.
When the operating lever 73 is operated to swing the operating bar 72 and move the operating member 6 backward, the engaging member 5,
As the engaging pins 51, 51, . It separates from the strip 21 and becomes the state shown in FIGS. 4 and 6. Therefore, the locking portion 3 is connected to the bolt shaft 2.
Since the seat can be moved relative to the seat, the seat can be quickly moved to an appropriate position. If the seat is moved to an appropriate position and the operating lever 73 is returned to its original position, the engaging members 5, 5 will come into contact with each other again, and the thread 21 at that position will
3 and 5 again. When the seat moves, the operation bar 72 of the operation mechanism 7 also moves relative to the locking part 3, but the operation bar 72
Since the seat is in the vertical direction, the engagement relationship between the operating bar 72 and the operating member 6 does not change no matter what position the seat is in.

Separately from the seat position adjustment operation using the operating lever 73, when the operating shaft 25 is rotated forward or backward using the handle 24, the worm 26 is rotated, and thereby the bolt shaft 2 is rotated via the worm wheel 23.
is rotated, so the locking part 3 that is in a threaded relationship with the bolt shaft 2 moves relatively on the bolt shaft 2 according to the amount of rotation. This movement allows the seat to be moved forward or backward. Furthermore, since the amount of movement is small, it is used when making subtle adjustments to the seat position. Since there is almost no torque transmission from the worm wheel 23 to the worm 26, the bolt shaft 2 does not rotate naturally.

Note that the operation of the operating member 6 is not limited to the operating mechanism 7 as shown in the embodiment, and a flexible operating cable that allows seat movement may be directly connected to the operating member 6. The operating shaft for rotating the bolt shaft 2 is also required as long as it can rotate the bolt shaft 2. Further, the engagement members 5 do not need to be a pair. Only one of them may be provided, and the other may not fit into the bolt shaft 2.

According to the seat position adjustment device according to the present invention, since the engaging member that engages with the thread of the bolt shaft is removed in the lateral direction of the bolt shaft by the operating member having the long hole in the form of a center bend, the engagement member is disengaged in the lateral direction of the bolt shaft. While ensuring sufficient binding strength between the member and the bolt shaft, the seat can be quickly adjusted by engaging and disengaging quickly, and the bolt shaft itself can be rotated to adjust the position of the seat by a minute amount according to the rotation of the thread. Since the seat can be moved and finely adjusted, it is possible to quickly set the appropriate seat position.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view showing the arrangement state, Fig. 2 is an enlarged perspective view of the entire seat position adjustment device, and Fig. 3 is a latching portion in the fitted state. The front view and Figure 4 also show the released state, and Figure 5
The figure is Fig. 3 - sectional view, Fig. 6 is Fig. 4 -
FIG. 1...Seat position adjustment device, 2...Bolt shaft, 2
5... Operating shaft, 3... Locking part, 4... Holding member,
5... Engagement member, 6... Operation member.

Claims (1)

[Scope of Claims] 1. A seat position adjustment device provided between a seat slidably attached to a vehicle body and the vehicle body, the axial direction of which is aligned with the sliding direction of the seat, and which can be rotated. A bolt shaft is attached to a seat, and an engaging member having a nut portion that engages with a half circumference of the bolt shaft is engaged with the engaging member and moved in one direction to move the engaging member to a disengaged position and to the other. consisting of an action part that allows the engaging member to be moved to the engaged position by movement thereof, and a horizontal part that allows the engaging member to be held in the engaged position and restrained from moving to the disengaged position by movement in the other direction. A seat position adjustment device characterized in that a locking portion including an operation member provided with a long hole is fixed to a vehicle body side.