JPH069883Y2 - Seat slide lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a seat slide lock device for a vehicle seat.

[Prior Art] A front seat of a vehicle is configured to be movable back and forth so as to ensure an optimal driving posture. That is, as shown in FIG. 5, a pair of left and right upper rails 2 are fixed to the bottom portion of the seat 1, and lower rails 3 are respectively capped on these upper rails 2 and engaged so as to be slidable in the longitudinal direction. , Each lower rail 3 is fixed to the vehicle body 4. By moving the upper rail 2 along the lower rail 3 in the longitudinal direction, the upper rail 2
The seat 1 connected to can be moved back and forth. A locking device for locking the upper rail 2 and the lower rail 3 is provided in order to move the seat 1 back and forth to fix the seat 1 at a desired position. As shown in FIG. 6, this locking device has brackets 5 and 5 fixed to the upper surfaces of upper rails 2 and 2, respectively, and shafts 6 and 6 rotatably supported on the brackets 5 and 5 rotatably about their axes. Each of them is provided, and one of the shafts 6, 6 is extended near the front portion of the upper rail 2 and bent in a substantially orthogonal direction, and the handle 7 is attached to the bent end portion, and the bracket 5,
5, the plates 8 and 8 are fixed to the shafts 6 and 6, respectively, and as shown in FIG.
The locking claws 9 and 9 are formed at the lower end of the lower rail 3, and as shown in FIG. 6, a plurality of locking holes 10 through which the locking claws 9 and 9 can be engaged and disengaged are respectively provided in the lower rails 3 and 3 in the longitudinal direction. The springs 11 and 11 are wound around the shafts 6 and 6 respectively at intervals to urge them to rotate, so that the plates 8 and 8 are always in pressure contact with the lower rails 3 and 3, respectively, and the locking claws 9 and 9 are locking holes. The levers 7a and 7a are provided on the shafts 6 and 6 so as to be engaged with each other so that the shafts 6 and 6 interlock with each other. The interlocking rod 7b is connected. In this configuration,
To move the seat 1, the handle 7 is rotated against the force of the spring 11, which causes the shafts 6 and 6 to rotate in unison and the plates 8 and 8 to rotate so that their locking pawls 9 and 9 are rotated. When it comes out of the lock holes 10, 10 of the lower rails 3, 3 (see the phantom line in FIG. 7), the seat 1 is moved in either forward or backward desired direction, and when the desired position is determined, the handle 7 When the shafts 6 and 6 are released, the shafts 6 and 6 are rotated by the force of the springs 11 and 11 to return to the original state, the plates 8 and 8 are rotated, and the lock claws 9 and 9 engage with the other lock holes 10 and 10, respectively. To do.

[Problems to be Solved by the Invention] However, according to the above-described conventional seat slide lock device, since the lock device is fixed to the outer side portion of the lower rail 3, there is a risk of a locking failure that is suitable for mixing foreign matter. When it is desired to effectively use the lower space of the seat 1, for example, when it is desired to provide a storage space for shoes such as shoes and slippers between the seat 1 and the vehicle body 4, the lock device is provided as an obstacle. Can not.

Then, this invention was made for the purpose of improving the above-mentioned conventional seat slide lock device.

[Means for Solving the Problems] In order to solve the above problems, the present invention has a lower rail having a substantially U-shaped cross section fixed to a vehicle body and an upper rail having a substantially inverted U-shaped cross section for fixing a seat slid in a longitudinal direction. Engagement is possible, and the flange portions of the lower rail and the upper rail are bent and formed into a substantially inverted U-shaped section and a substantially U-shaped section, respectively, to form a curl portion, and a roller is provided between the lower rail and the upper rail. In a seat slide device rotatably interposed, a slider is fitted to the curl portion side end of the lower rail to slidably engage with the curl portion of the upper rail, and at the center of the upper surface of the upper rail. A groove is formed in the longitudinal direction of the groove, and the roller is rotatably disposed between the bottom surface of the groove and the upper surface of the curl portion of the lower rail. A hinge bracket is fixed to the inner surface of the par rail, a shaft is rotatably supported on the hinge bracket, a plate protruding toward the lower rail is fixed to the shaft, and an end portion of the shaft is placed inside the lower rail. It is extended in its longitudinal direction, the end of this extended shaft is bent into a crank shape and a handle is attached, and a lock hole with which a lock claw formed in the plate engages is formed in the recess rail bottom surface in the longitudinal direction. The seat slide lock device is characterized by being formed at regular intervals.

[Operation] According to the present invention having the above-described configuration, when the shaft is rotated against the force of the spring, the lock claw is pulled out of the lock hole, and the upper rail is moved along the lower rail, the roller is moved to the lower rail. It rolls on the upper surface of the curl portion of the side and also slides on the bottom surface of the concave portion of the upper rail to roll. Then, when the handle is released in this state, the shaft rotates to the original state by the force of the spring, the plate rotates, and the lock claw engages with the lock hole of the lower rail.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. First
As shown in FIG. 2 and FIG. 2, the upper rail 2 is
The lower rail 3 is slidably engaged in the longitudinal direction, and the lower rail 3 has brackets 30, 30 connected to both ends thereof.
The brackets 30 and 30 are cross members 31 and 31.
To the cross member 31,
31 is fixed to the vehicle body 33. As shown in FIG. 3, the flange portions 2a, 2a of the upper rail 2 and the flange portions 3a, 3a of the lower rail 3 are bent and formed into a substantially U-shape or a substantially U-shape, respectively, and curl portions having a groove-shaped cross section are formed. 12 and 12a are formed in the longitudinal direction,
The curl portions 12 and 12a are intertwined with each other, and sliders 13 and 13 are interposed between them. Slider 13
Is made of a resin material of a fixed length which is fitted to the side end of the lower rail 3 in a J-shaped or inverted J-shaped cross section. Further, in the upper rail 2, the curl portions 12a, 12a of the lower rail 3 are
A rod-shaped roller 14 capable of rolling on the upper surface is inserted, and a concave groove 15 having a bottom surface 2b with which the roller 14 comes into contact is formed at the center of the upper surface of the upper rail 2 in the longitudinal direction thereof, and the upper inner surface of the upper rail 2 is A gap 2d is formed between the roller 14 and the roller 14. This allows the upper rail 2
The spring back is effective to prevent rattling of the roller 14 and reduce the load, and the roller 14 can smoothly rotate, whereby the upper rail 2 can slide smoothly. The roller 14 has a length substantially equal to the groove inner width of the upper rail 2 and is arranged orthogonally to both rails 2 and 3, and spherical projections 16 and 16 are formed at both ends. 1 and 2
As shown in the figure, stoppers 17 and 18 of the roller 14 are planted on both rails 2 and 3 at predetermined intervals at both ends and substantially the center.

On the other hand, a hinge bracket 19 is fixed to a substantially central portion in the longitudinal direction inside the upper rail 2, and a shaft 20 is rotatably supported by the hinge bracket 19. A plate 21 is fixed to the shaft 20 by welding or the like, and a lock claw 22 is formed at the lower end of the plate 21. Then, a spring 23 that urges the shaft 20 to rotate is elastically mounted between the shaft 20 and the hinge bracket 19, and the end portion of the shaft 20 is extended to the end portion of the upper rail 2 so that the bracket 2
4, and the end is bent into a crank shape, and the handle 25 is attached. On the other hand, a plurality of lock holes 26 are formed on the bottom surface 3b of the recess of the lower rail 3 at regular intervals so that the lock claws 22 can be engaged and disengaged.

The operation of the above embodiment will be described. When the seat is adjusted back and forth, as shown in FIG.
The lock pawl 22 is rotated against the biasing force of the
When the seat is moved back and forth and the upper rail 2 is moved along the lower rail 3 after being released from 6, the roller 14 is supported on the upper surface of the lower rail by the curl portions 12a, 12a, and the concave portion of the upper rail 2 is depressed. Groove 15
When the upper rail 2 is pushed or pulled in the longitudinal direction in the longitudinal direction, the roller 1
The roller 14 slides smoothly with a light force through the roller 4, and the roller 14 comes into contact with the stoppers 17 and 18 and stops.
If there is a difference in rotation between the two ends of the roller 14, the roller 1 is centered on the end having the smaller number of rotations.
4 tries to rotate in a circular shape on the lower rail 3, but since the spherical projections 16 and 16 are formed at both ends, both or one of the spherical projections 16 and 16 is an inner surface of both side walls of the upper rail 2. Contact 2c, 2c. However, since the spherical projections 16 and 16 only make point contact with the inner surfaces of both side walls, they do not prevent the rotation of the roller 14 and the function of the roller 14 is maintained, so that the upper rail 2 moves smoothly. be able to. Then, when the desired movement of the seat ends and the handle 25 is released, the shaft 20 rotates and returns to the original state, the lock claw 22 engages with the lock hole 26, and the seat is fixed at that position.

[Advantages of the Invention] According to the seat slide device of the present invention described above, the lock device for locking the upper rail and the lower rail is provided inside the upper rail and the lower rail, and the handle for operating the lock device is inside the lower rail. Since the shaft that can be rotated in its longitudinal direction is bent and formed into a crank shape, there is no risk of locking failure due to foreign matter entering, and a storage space for shoes etc. is provided in the lower space of the seat. Also, the lock device and the like do not get in the way, and the lower space of the seat can be effectively used. Moreover, since the slider is interposed in the curl portions which are engaged with each other, the springback in the peeling direction of the curl portion is firmer than in the conventional ball, and the play of the roller is absorbed, so that the durability is excellent. Also,
Since the curls provided on both sides of the lower rail and the bottom of the groove formed along the longitudinal direction of the upper rail come into contact with the roller, springback works in the compression direction, softening the load on the roller and smooth movement. It is possible to achieve such effects.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is an operation explanatory view, and FIG. FIG. 6 is a side view of the seat device, FIG. 6 is a perspective view showing a conventional seat slide lock device, and FIG. 7 is a sectional view taken along line BB of FIG. 2 ... upper rail, 2b ... bottom surface, 3 ... lower rail, 2a, 3a ... flange portion, 3b ... recessed bottom surface, 1
2, 12a ... curl part, 13 ... slider, 14 ...
... Roller, 15 ... Concave groove, 16 ... Spherical projection, 17,
18 ... Stopper, 19 ... Hinge bracket, 20
...... Shaft, 21 ...... Plate, 22 ...... Lock claw,
23 ... Spring, 24 ... Bracket, 25 ... Handle, 26 ... Lock hole.

Claims (1)

[Scope of utility model registration request] 1. A lower rail having a substantially U-shaped cross section fixed to a vehicle body, an upper rail having a substantially inverted U-shaped cross section fixed to a seat is slidably engaged in the longitudinal direction, and a flange portion of the lower rail and the upper rail. In a seat slide device in which a roller is rotatably interposed between a lower rail and an upper rail by forming a curl portion by bending each of them into a substantially U-shaped cross section and a substantially U-shaped cross section, respectively. A slider is fitted to the end of the curl portion of the upper rail so as to slidably engage with the curl portion of the upper rail, and a groove is formed in the longitudinal direction at the center of the upper surface of the upper rail, and the bottom surface of the groove is formed. And the roller is rollably disposed between the upper surface of the curl portion of the lower rail and
A hinge bracket is fixed to the inner surface of the upper rail, a shaft is rotatably supported on the hinge bracket, a plate protruding toward the lower rail is fixed to the shaft, and an end portion of the shaft is Extend the inside of the lower rail in the longitudinal direction, bend the end of this extended shaft into a crank shape and attach a handle, and set a lock hole with which a lock claw formed on the plate engages, a bottom surface of the recess of the lower rail. A seat slide lock device, characterized in that the seat slide lock device is formed in the longitudinal direction at regular intervals.