JPS6132825Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vehicle seat track that is interposed between a vehicle seat and a fixing portion of the seat, and is used to adjust and fix the seat position back and forth.

Conventional seat trucks have comb-shaped sides or continuous through-holes, and the locking plate engages the comb-teeth or through-holes at right angles and is fixed in place. However, these conventional types have the disadvantage that the contact area during engagement is small, resulting in insufficient fixation and being easily damaged.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks, and to provide a seat track for a seat that has reliable fixation, is easy to fix and release, and is not easily damaged. be.

Another object of the present invention is to provide a new type of seat track in which the fixing means is different from conventional ones.

Next, the present invention will be explained with reference to illustrated embodiments embodying the invention. In the figure, the seat track 1 is the footrest 2.
1 Lower rail 2 fixed to the upper surface side and seat 2
The upper rail 5 is fixed to the back side of the seat cushion 23 of No. 2. The lower rail 2 is a rail body having a cross-sectional shape, with wide engagement step portions 2B, 2B on both sides, and a longitudinal direction at the center of the upper surface for guiding and locking an engagement member 10, which will be described later. A guide road 3 is formed. That is,
A pair of locking sides 3 facing each other with a predetermined gap
The area between A and 3A is the guide path 3, and the locking sides 3A and 3A
Fan-shaped locking portions 3B, 3B are formed continuously in the longitudinal direction, and are detachable when the engaging member 10, which will be described later, rotates. In addition, in the guideway 3 of the lower rail 2 of this example, the locking parts 3B, 3B are formed only in the center part excluding both the front and rear ends.

The upper rail 5 has a cross-section of
It is shaped so that it is prevented from coming off by bent locking pieces 5A, 5A, and is fitted so as to be slidable along the lower rail 2. A mounting hole 6 for an engaging member 10 is formed in the center of the upper rail 5, and the engaging member 10 is disposed below the mounting hole 6 and within the guide path 3, and is fixed to the center of the engaging member 10. The rotated shaft 11 is inserted into the upper surface side of the upper rail 5 through the mounting hole 6, and is fixed to the hole 12A of the rotary lever 12 on the upper surface side of the upper rail 5. The engaging member 10 has a width slightly smaller than the guide path 3, and both ends are formed in an arc shape centered on the rotation shaft 11.
B and 3B have shapes corresponding to this.
The outer end of the rotating lever 12 is a knob portion 12B,
The engaging member 10 is made rotatable within the guide path 3 by rotating the knob portion 12B about the rotation shaft 11. That is, the rotation lever 12 is on the left side in the figure (the rear side of the seat in FIG. 3).
When the engaging member 10 is sufficiently rotated, the engaging member 10 is oriented horizontally to engage with the locking portions 3B, 3B of the guideway 3 in the same plane, and is set so as to prevent the upper rail 5 from sliding. The rotation lever 12 is on the right side in the figure (the front side of the seat in FIG. 3).
When the engaging member 10 is rotated, the engaging member 10 is oriented vertically in the longitudinal direction of the guideway 3, that is, parallel to the sliding direction of the upper rail 5, and the rotating lever is set so that the upper rail 5 can freely slide. 12 and the engagement member 10 are set.

12C is a spring hanging part of the rotating lever 12, 7 is a spring hanging part provided on the top rail 5, and between both spring hanging parts 12C and 7, the rotating lever 12 is always on the left side (the rear side of the seat). ) tension spring 13 for sufficiently tensioning the
is interposed. Reference numeral 8 denotes a stopper that restricts the rotational position of the rotational lever 12, so that when the rotational lever 12 is rotated to the right (towards the front of the seat), the engagement member 10 is in the vertical position. Regulated. Note that 9 and 9 are screw holes for attaching the upper rail 5.

On the other hand, the seat track 15 is used together with the seat track 1 described above, and is formed in the same manner as the seat track 1 described above. The seat track 15 is not provided with the engaging member 10, the rotating lever 12 for actuating the engaging member 10, the spring hanging portion 7, and the stopper 8 in order to allow the upper rail 19 to slide only. It is something. Note that although the guide path 17 of the lower rail 16 of the seat track 15 is formed to have a constant width in this example, the lower rail 6 is formed in a cylindrical shape, and the guide path 17 is formed to have a constant width.
7 can be omitted. Note that 20, 20 are screw holes for attaching the upper rail 19.

Now, in the seat tracks 1 and 15 of this example, lower rails 2 and 16 are respectively disposed in the front and back direction on the leg base 21 side, and the lower surfaces 2A and 16A are respectively placed on the leg base 21, for example, for the front seat of an automobile. Fixed. The upper surface of each upper rail 5, 19 is screwed to the lower surface of the seat cushion 23 of the seat 22, and each upper rail 5, 19 is fitted into the lower rail 2, 16. Therefore, when it is desired to move the seat 22 forward (or backward), the rotation lever 12 of the seat track 1 is moved forward of the seat cushion 23 against the stopper 8 against the tension of the tension spring 13. When the engaging member 10 is operated until they touch each other, the engaging member 10 becomes vertical in the guide path 3 and is disengaged from the locking portions 3B, 3B (see the imaginary line in FIG. 4), so that the seat 22 is moved forward by the required amount. (or backwards). When the operation of the rotary lever 12 is stopped, the rotary lever 12 is returned by the tension spring 13, so that the locking portion of the guide path 3
The engaging member 10 automatically engages with B and 3B, and the upper rail 5, that is, the seat 22 is fixed.

The seat 22 of the above embodiment was fixed to the footrest 21 using the seat track 1 provided with a fixing means and the seat track 15 not provided with a fixing means.
The seat 22, that is, the seat cushion 23, is not limited to this type of fixation, and may be fixed using only the seat tracks 1, 1 having fixing means.

As explained above, the present invention provides a lower rail having a box-shaped cross-section, in which engagement step portions are provided along the longitudinal direction on both sides, and a guide path in which fan-shaped locking portions continuously face each other is formed in the longitudinal direction of the upper surface. and an upper rail having a box-shaped cross section that is slidably fitted in the longitudinal direction of the lower rail to hold the engaging stepped portion of the lower rail, and the upper rail has a guide rail disposed within the guide path of the lower rail. An engaging member that is engaged with a predetermined locking portion facing the road by a biasing force of a spring means is attached via a support shaft, and a support shaft of the engaging member is provided with a support member that resists the biasing force of the spring means. Since the structure is equipped with a rotating lever that disengages the engagement member by rotating the lever, the structure is simple, and the sliding and fixing of the upper rail can be performed smoothly and reliably by operating the rotating lever. It's convenient. In addition, the present invention rotates the engaging member within the same plane within the guideway of the lower rail and engages the engaging portion of the lower rail guideway at both ends of the engaging member, so the contact area at the time of engagement is is large. Therefore, unlike the conventional type, the fixation of the upper rail is strong, and since the engaging member can be engaged with the continuous fan-shaped locking portion, it can be fixed at a desired position. When the upper rail is moved, the upper rail is made movable because it is rotated within the guide path of the engagement member to release the engagement.

Therefore, the present invention has a new type in which the engaging member formed into an arc shape at both ends is engaged with the locking part in the same plane, so the structure is simple and the fixing and unfixing of the upper rail can be done by turning the rotating lever. It can be carried out smoothly and reliably by dynamic operation, and the upper rail is fixed by surface contact of both ends of the engaging member.
The upper rail, which can be firmly fixed and is difficult to damage, and which is slidably fitted to the lower rail to hold the engagement step of the lower rail, has the effect of preventing the guideway of the lower rail from opening, and is used to secure the upper rail and lower rail. It is stronger and safer.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention: Fig. 1 is an exploded perspective view showing the parts of the seat track, Fig. 2 is a perspective view showing a pair of seat tracks, and Fig. 3 is the assembly of the seat track to the seat. FIG. 4 is an explanatory diagram showing the operation of the seat track. 1...Seat track, 2...Lower rail, 3
...Guidance path, 3A...Latching side, 3B...Locking part,
5... Upper rail, 5A... Locking piece, 6... Mounting hole, 10... Engaging member, 11... Rotating shaft, 12
...Rotating lever.

Claims (1)

[Scope of utility model registration request] A lower rail with a box-shaped cross section, which is provided with engagement step portions along the longitudinal direction on both sides, and has a guide path formed in the longitudinal direction on the upper surface in which fan-shaped locking portions continuously face each other, and the engagement step portion of the lower rail. The upper rail has a box-shaped cross-section and is slidably fitted in the longitudinal direction of the lower rail to hold the upper rail, and the upper rail has a predetermined locking portion disposed within the guide path of the lower rail and facing the guide path. An engaging member that is engaged by a biasing force of a spring means is attached via a support shaft,
A seat truck characterized in that a pivot lever for disengaging the engagement member by a rotation operation against the biasing force of the spring means is attached to the support shaft of the engagement member.