JPH0554062U - Seat slide device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a so-called mechanical lock mechanism of a seat slide device, the operation force is reduced and a semi-locked state is prevented. [Structure] A lock mechanism 5 arranged between a fixed rail 4 and a movable rail 3, a rod 11 fixed to the fixed rail via a rod bracket 21, and a cylinder 13 fixed to the movable rail via a bracket 23. , And a spring body 15 wound around the rod. One end of the spring body is fixed to the operation piece 25, and the other end 15a is fixed to the cylinder. The front and rear ends 11a of the rod are formed to have a small diameter and inserted into the hole 21a of the rod bracket. The tip of the small diameter end is caulked to allow the rod to rotate with respect to the rod bracket.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a seat slide device, and more specifically, a fixed rail fixed to a vehicle body side, a movable rail attached to the fixed rail so as to be slidable back and forth, and between the fixed rail and the movable rail. The present invention relates to a seat slide device including a lock mechanism provided.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, in a seat of a vehicle or the like, a seat slide device, which is disposed below a seat cushion or the like and is capable of moving the seat back and forth according to preferences of a seated person, has been widely known. Such a seat slide device has a fixed rail fixed to the floor surface of the vehicle body, a movable rail mounted above the fixed rail so as to be slidable back and forth, and a movable rail fixed at an appropriate position. And a locking mechanism for locking. As this locking mechanism, various structures are known, and in recent years, a so-called mechanical lock in which a rod fixed to the fixed rail side is fixed by a spring or the like in a cylinder fixed to the movable rail side is also adopted.

The mechanical lock mechanism is generally arranged on the side of the movable rail and the fixed rail, and there is a problem in terms of arrangement space. Therefore, for example, in Japanese Utility Model Laid-Open No. 3-88846, a rod fixed to the vehicle body side is used as a fixed rail, and a spring for tightening the rod is fixed to a slide body that can slide back and forth to reduce the installation space. Some have been proposed.

[0004]

[Problems to be solved by the device]

 In the seat slide devices including the above publications, since the rod is fixed even in the rotational direction, the operating lever provided at one end of the spring wound around the rod is locked or unlocked. When operated, the spring would gradually tighten or untighten the rod, possibly leading to a semi-locked condition until it was completely locked or unlocked.

The object of the present invention is to reduce the installation space of the seat slide device and to make the rod on the fixed rail side and the spring and cylinder on the movable rail side half-locked when the operating lever is operated. (EN) Provided is a seat slide device which can be prevented.

[0006]

[Means for Solving the Problems]

 The present invention has been made in view of the above-mentioned problems, and a lock mechanism disposed between a fixed rail and a movable rail is provided with a rod whose front and rear ends are fixed to the fixed rail via rod brackets. It is composed of a cylinder in which the rod is inserted and fixed to the movable rail side, and a spring body installed inside the cylinder and wound around the rod. One end of the above spring body is operated by the cylinder and the other end is operated. The rod is attached to the lever side, the front and rear ends of the rod are formed to have small diameters, and the small diameter ends are inserted into the holes of the rod bracket and caulked to rotate the rod with respect to the rod bracket. It is characterized by being provided so as to be movable.

[0007]

[Action]

 According to the present invention, since the front and rear ends of the rod formed to have a small diameter are respectively inserted into the holes of the rod bracket and caulked, the rod is provided so as to be rotatable with respect to the rod bracket. When the spring body gradually approaches or separates from the rod, the rod rotates and absorbs friction in the direction of rotation to reduce the operating force, and the rod, spring and cylinder, that is, the fixed rail and the movable rail. There is no danger of the semi-locked state.

[0008]

【Example】

 Hereinafter, a configuration of an embodiment of a seat slide device according to the present invention will be described in detail with reference to the drawings. 1A, 1B and 2 each show an outline of one embodiment of the present invention. A seat slide device 1 includes a seat cushion (not shown), a movable rail 3 fixed to a floor surface of a vehicle body, and a fixed rail. The rail 4 and the lock mechanism 5 arranged between the two rails 3 and 4 are provided. The movable rail 3 is formed in a substantially inverted U shape, and the fixed rail 4 is formed in a substantially U shape, and the movable rail 3 is mounted so as to be able to slide back and forth on the fixed rail 4. The movable rail 3 and the fixed rail 4 may have various known structures, and detailed description thereof will be omitted.

The lock mechanism 5 has a rod 11 fixed to the fixed rail 4 side, a cylindrical cylinder 13 into which the rod 11 is inserted, a cylinder 13 provided inside the cylinder 13, and wound around the rod 11. And a spring body 15. The rod 11 extends in the front-rear direction along the two rails 3 and 4, and the front and rear end portions 11a and 11a are attached to L-shaped rod brackets 21 fixed to the fixed rail 4 by bolts 17 and nuts 18, respectively. Has been. The rod bracket 21 can be appropriately deformed into an inverted T shape, a U shape, or the like.

The cylinder 13 is fixed to the movable rail 3 via an inverted U-shaped bracket 23 fixed to the upper part, and slides back and forth on the rod 11 together with the movable rail 3. One end 15a of the spring body 15 provided in the cylinder 13 is fixed to the cylinder 13 and the other end (not shown) is fixed to the operation piece 25. The operating piece 25 projects upward from the projecting holes 23a, 3a formed in the bracket 23 and the movable rail 3, respectively, and is connected to an operating lever (not shown) by a wire or the like. Note that the operating piece 25 may be used as an operating lever by protruding laterally from the side portion of the movable rail 3. It is also possible to provide an operation lever on only one of the pair of left and right lock mechanisms 5 and connect the other lock mechanism 5 with a wire or the like to form a double-sided lock mechanism.

The spring body 15 is wound so that the rod 11 is always tightened (locked state), and the diameter of the spring body 15 is expanded by operating the operation lever (operation piece 25) so that the spring body 15 can be slid back and forth. It is designed to be obtained. In the present embodiment, the operation piece 25 to which one end of the spring body 15 is fixed is provided in the substantially center of the cylinder 23, and one spring body 15 is wound on the front side of the operation piece 25. It is of course possible to provide modifications such as those provided on the rear side of 23, or the spring body 15 is wound around the operation piece 25 provided at the center.

As shown in FIG. 2, the front end 11 a of the rod 11 is formed to have a small diameter, and this small diameter end 11 a is inserted into a hole 21 a formed in the rod bracket 21. Although only the front end portion 11a is shown, the rear end portion is similarly formed to have a small diameter. The rod 11 is pivotally supported with respect to the rod bracket 21 by caulking the end 11a having the small diameter through the washer 27 after the small diameter end 11a is inserted into the rod bracket 21 (FIG. 1B). ). In the present embodiment, the hole 21a of the rod bracket 21 is a long hole that is long in the vertical direction, so that errors in the upward and downward directions during assembly and molding can be absorbed. The small-diameter end portion 11a is formed into a plurality of steps, and only the smallest-diameter end portion is formed so that it can be inserted into the rod bracket 21. As an example, the rod 11 has a diameter of 6, the small-diameter end portions 11a are 5 and 4, and the elongated holes 21a of the rod bracket 21 are formed with a width of 5 and a length of 7, respectively.

With the above-described configuration, when the operation lever (operation piece 25) is operated in the locked state shown in the figure, the spring body 15 is fixed to the operation piece 25, and the spring body 15 gradually moves from the rear side to the front side. However, since the rod 11 is rotatable, the rod 11 also rotates until the force for separating is transmitted to the front spring body 15, and the semi-locked state in which the lock is gradually released can be effectively prevented. It is a thing. At this time, the rotation of the rod 11 absorbs the friction in the rotational direction and reduces the operating force. On the contrary, when returning to the locked state, the spring body 15 automatically returns to the state of tightening the rod 11 when the operating lever is released, but at this time, the spring body 15 is gradually returned to the tightened state from the rear side. Instead of rotating, the rod 11 rotates to immediately change from the completely unlocked state to the completely locked state, and the semi-locked state does not occur.

[0014]

[Effect of the device]

 The above is the configuration of one embodiment of the seat slide device according to the present invention. According to this configuration, the front and rear ends of the rod formed to have a small diameter are respectively inserted into the holes of the rod bracket for caulking. As a result, the rod is provided so as to be rotatable with respect to the rod bracket, and when the spring body gradually approaches or separates from the rod by operating the operating lever, the rod rotates and absorbs friction in the direction of rotation for operation. It is possible to obtain a seat slide device that is excellent in safety and operability without the fear that the rod, the spring, and the cylinder, that is, the fixed rail and the movable rail are in a semi-locked state while the force is reduced.

[Brief description of drawings]

1 shows an embodiment of the present invention, in which A is an exploded perspective view of a seat slide device, and B is a sectional view of relevant parts.

FIG. 2 is an exploded perspective view of relevant parts.

[Explanation of symbols]

 1 Seat Slide Device 3 Movable Rail 4 Fixed Rail 5 Lock Mechanism 11 Rod 11a End 13 Cylinder 15 Spring Body 21 Rod Bracket 21a Hole 25 Operation Piece

Claims (1)

[Scope of utility model registration request] 1. A fixed rail fixed to the vehicle body side, and a movable rail attached to the fixed rail so as to be slidable back and forth.
In a seat slide device including a lock mechanism disposed between the fixed rail and the movable rail, the lock mechanism includes a rod whose front and rear ends are fixed to a fixed rail via a rod bracket, A cylinder, into which the rod is inserted and fixed to the movable rail side, and a spring body installed in the cylinder and wound around the rod are provided. The rods can be rotated with respect to the rod bracket by being fixed to each other, the front and rear ends of the rod being formed to have small diameters, and the small diameter ends being inserted into the holes of the rod bracket and being caulked. A seat slide device characterized by being made.