JPH0629101Y2 - Vehicle seat slide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to a vehicle seat slide device.

(Prior Art) Generally, a seat of an automobile can be secured with an optimal seat position according to the height of an occupant by a seat slide device.

The outline of the seat slide device is that the lower rail fixed to the vehicle body panel side is provided with engaging holes at equal intervals along the longitudinal direction, and the upper rail fixed to the seat side is detachably engaged with the engaging hole. A mating latch is provided.

The lower rail and the upper rail are slidably mounted back and forth, and the latch is fixed to a lever shaft having an operating portion, and is always biased toward the engaging hole by a biasing spring interposed in the lever shaft. There is.

(Problems to be Solved by the Invention) As described above, since the latch is constantly biased in the direction of the engaging hole by the biasing spring, the lever shaft is rotated against the biasing spring by the operating portion to rotate the latch. By retreating from the engaging hole to release the meshing, a locked state where the seat can be moved back and forth can be obtained.

When the lock is released, after the seat is moved back and forth and the adjustment is completed, the urging spring operates by releasing the hand from the operating portion, and the latch rotates together with the lever shaft to engage with the engaging hole. . This secures the locked state, but when adjusting the slide of the seat, the engagement hole and the latch are not always correctly positioned at the positions where they are opposed to each other. Sometimes the latch is in place. In such a case, the engagement is not established and the disengagement occurs.

This meshing state is not displayed on the display unit, and it is not directly checked with the eyes but is judged by the feeling when the latch is engaged with the engagement hole, so the occupant may not notice the disengagement. is there. The seat at this time is
Since it is in a free state in which it can move back and forth, when the vehicle suddenly stops or suddenly starts, the seat moves forward or backward by its inertia. At this time, since the seat moves rapidly, the latch slips over the engagement hole and is not locked, so that the seat does not engage at a predetermined position and the seating position is deviated.

Therefore, an object of the present invention is to provide a vehicle seat slide device that can obtain a positive meshing state regardless of which position the seat is stopped during seat slide adjustment.

[Means for Solving the Problem] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention assembles a lower rail fixed to a vehicle body panel side and an upper rail fixed to a seat side so as to be relatively movable. While the engaging portions are formed on the lower rail side at equal intervals along the longitudinal direction,
A first member provided on the upper rail side, with a meshing unit fixed to a rotatable operation lever shaft and meshing with the engaging unit in a disengageable manner.
Of the first engaging member and the first engaging member are interlockingly connected to each other via the connecting means and face the first engaging member when the first engaging member and the engaging portion are disengaged from each other. When the load is applied in the longitudinal direction of the rail while meshing with the outer engaging portion, the first engaging member and the engaging portion are movably supported in the axial direction of the operating lever shaft so as to mesh with each other. A second engaging member is provided.

(Operation) According to such a seat slide device, when the seat is slid back and forth and stopped, the meshing means of the first main engaging member can obtain a reliable locked state of meshing with the engaging portion. . On the other hand, when the main sliding member is disengaged when the seat slide movement is completed, the second engaging portion is engaged. In this state, when the seat is suddenly stopped or suddenly started, and the seat is rapidly moved forward or backward, the engaged second engaging member is slightly moved in the axial direction, and at the same time, the first engaging member is moved. The mating member secures a meshing state in which it meshes with the adjacent next engaging portion, and a reliable locked state of the seat is obtained.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS. 1 to 5.

In the figure, reference numeral 1 denotes a lower rail, and 3 denotes an upper rail assembled to the lower rail 1 so as to be movable relative to each other, which are arranged on the left and right as shown in FIG. The lower rail 1 can be fixed to a vehicle body panel (floor panel) via brackets 5 and 5 provided at the front and rear.

Further, an angle-shaped plate 7 extending along the longitudinal direction is provided inside the lower rail 1. Engaging portions 9 formed at equal intervals are provided on the rising wall 7a of the plate 7 along the longitudinal direction, and the engaging portions 9 are in the shape of rectangular holes penetrating perpendicular to the longitudinal direction.

The upper rail 3 is fixed to the seat cushion side (not shown) of the seat, and is provided with an operation lever shaft 13 having an operation portion 11, a first engaging member 15, and a second engaging member 17, respectively. There is.

The operation lever shaft 13 is rotatably supported at both ends by front and rear brackets 19, 19 and is constantly urged by a urging spring 21 in a time direction (arrow A direction in FIG. 3).

It should be noted that one end of the biasing spring 21 is locked to the shaft end of the operation lever shaft 13, and the other end is locked to the rear bracket 19.

The first engagement member 15 is formed in a plate shape, and its base is fixed to the operation lever shaft 13 so that it can rotate together with the operation lever shaft 13. Further, the engaging protrusions 23, 23, 23 are provided at three positions on the free end side which is the tip side, and the pitch P of each engaging protrusion 23 corresponds to the pitch P ₁ of each engaging portion 9. By engaging the engagement portion 9, the engagement portion 9 is engaged and disengaged with each other.

The second engagement member 17 has an engagement protrusion 25 on the free end side which is the tip end side, and the base 27 is axially supported movably in the axial direction with respect to the operation lever shaft 13. That is, a pair of elastic bodies 31 and 31 sandwiched by the rear bracket 17 and a support bracket 29 extending from the upper rail 3 are provided on both sides of the base portion 27. Therefore, when the axial load acts on the operating lever shaft 13, the elastic body 3
Due to the elastic deformation of 1, 31, they are slightly moved in the axial direction (arrow B in FIG. 1).

Further, the second engaging member 17 is urged toward the engaging portion 9 side by an urging spring 33 provided on the operation lever shaft 13, and at the same time as the first engaging member 15 via the arm 35. It is linked and linked. That is, as shown in FIG. 3, the tip of the engaging protrusion 23 of the first engaging member 15 contacts the rising wall 7a of the plate 7, and the engaging protrusion 25 of the second engaging member 17 engages. When engaging with the portion 29, one end of the arm 35 is integrally fixed to the first engaging member 15, and the other end of the arm 35 is in contact with the second engaging member 17. This allows
When the first engaging member 15 is rotated counterclockwise in the figure, in the direction of retracting from the engaging portion 9, the arm 35 can be rotated together in the same direction. It should be noted that the urging spring 33 works to rotate in the clockwise direction, that is, in the forward direction (arrow B) with respect to the engaging portion 9.

Further, as shown in FIG. 2, in the second engaging member 17, the engaging protrusions 23, 23, 23 of the first engaging member 15 have the engaging portions 9 respectively.
When there is disengagement located between the engagement part 9 and the engagement part 9, the position is set so as to properly engage with the engagement part 9 outside the region where the disengagement occurs.

Reference numeral 37 denotes a connecting wire for interlocking connection between the operation lever shaft 13 and the similar operation lever shaft 13 formed on the other side.

In the seat slide device configured as described above, when the operation lever shaft 13 is rotated counterclockwise while holding the operation portion 11, the engagement protrusions 23 and 25 of the first and second engagement members 15 and 17 are As shown by the chain line in FIG. 4, the lock is released from the engaging portion 9, so that the slide adjustment can be performed by sliding the seat back and forth. At this time,
When the hand is released from the operation portion 11, the engagement protrusion 23 of the first engagement member 15 is brought into a locked state in which it engages with the engagement portion 9 as shown in FIG.

On the other hand, when the seat slide is completed, the engagement protrusion 23 of the first engagement member 15 causes disengagement between the engagement portions 9 as shown in FIG. The engaging protrusion 25 of the engaging member 17 is secured in a meshed state with the engaging portion 9. In this state, for example,
When the action of moving the seat forward due to sudden stop etc.,
The second engaging member 17 is pressed by the bracket 19, and the elastic body 31 elastically deforms and moves in the axial direction. At the same time, as shown in FIG. 2, the engaging projection 23 of the first engaging member 15 is formed.
Will be in a locked state that meshes with the engaging portion 9.

As shown in FIG. 6, the engaging portion 9 is formed into a comb tooth shape,
The same effect can be expected by forming the engaging means 23, 25 of the second engaging members 15, 17 in the shape of engaging holes, and can be applied to a seat slide device equipped with another type of locking device. Is.

[Advantages of the Invention] As described above, according to the seat slide device of the present invention, when the first engaging member is disengaged when the seat is slid, the second engaging member is engaged, and the vehicle is suddenly stopped or suddenly started. When a large action of moving forward or backward is exerted by the above, the second engaging member movably provided engages the first engaging member with the engaging portion, so that a reliable locked state can be secured. It is also very favorable in terms of safety.

[Brief description of drawings]

FIG. 1 is an enlarged side view of an essential part showing a seat slide device of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. 4 is an operation explanatory view, FIG. 5 is a perspective view of the entire seat slide device, and FIG. 6 is a perspective view showing a modified example of the engaging portion and the meshing means. DESCRIPTION OF SYMBOLS 1 ... Lower rail 3 ... Upper rail 9 ... Engagement part 13 ... Operation lever shaft 15 ... 1st engagement member 17 ... 2nd engagement member 23 ... Engagement projection part (meshing means) 35 ...... Arm (connection means)

Claims (1)

[Scope of utility model registration request] 1. A lower rail fixed to a vehicle body panel side,
The upper rail fixed to the seat side is assembled so as to be relatively movable, and the engaging portions are formed on the lower rail side at equal intervals along the longitudinal direction, while the upper rail side is fixed to the rotatable operation lever shaft. A first engaging member having a meshing means that meshes with the engaging portion in a disengageable manner, and the first engaging member and the engaging portion are interlockingly linked with the first engaging member via a connecting means. When disengaged with the first engagement member, the first engagement member engages with the engagement portion outside the area facing the first engagement member, and when a load is applied in the longitudinal direction of the rail, the first engagement member and the engagement portion A vehicle seat slide device, characterized in that a second engaging member rotatably supported in the axial direction of the operation lever shaft so as to engage with each other is provided.