JP2010173507A - Slide rail device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide rail device for a vehicle, easily manufactured and assembled as the slide rail device, by improving a lock device, easily manufactured by reducing costs while enhanced in lock strength. <P>SOLUTION: This lock device 30 is provided with: a pair of holding members 21 which are integrated to an upper rail 20 and project into the upper rail 20; a lock device 30 mounted between the holding members 21 by a support arm 32 to be oscillatable in the upper rail 20, a first lock claw and a second lock claw formed integrally with a lock member 31 to be engageable to each of locking groove 11 and locking hole 12 on a lower rail 10 side; and an elastic repulsion means 40 for energizing the lock member 31 so that the first lock claw and the second lock claw may be oscillated in the engaging direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a slide rail device that adjusts the position by sliding a vehicle seat in the front-rear direction, and more particularly to a vehicle slide rail device that has an improved locking mechanism.

  In recent vehicles, a vehicle slide rail device is provided on the vehicle seat so that the front-rear position of the vehicle seat can be adjusted. Such a vehicular slide rail device should be able to easily adjust the position of the vehicular seat and at the same time increase the rigidity at the time of fixing so as to ensure sufficient safety in the event of a collision accident or the like. I must.

  Of course, with respect to the vehicle slide rail device that is important for the vehicle, it is not only easy to use and secure safety as described above, but it is also important to facilitate the manufacture or reduce the manufacturing cost. Such improvements have also been proposed in Patent Document 1 and Patent Document 2.

JP 2006-290029 A JP 2007-91052 A

  The above-mentioned Patent Document 1 aims to “obtain a seat track device that can support a lock member on an upper rail without requiring a separate member and has a reduced number of parts and reduced weight and assembly cost”. A “seat track device” has been proposed.

  And the "seat track device" of this patent document 1 "is formed directly on the upper rail with a storage rotation hole of the lock member and a shaft support portion positioned before and after the storage rotation hole. It is considered that the above object can be achieved because the lock member is fixed to the hinge pin that rotatably supports both ends of the support portion.

  However, in the technique of this Patent Document 1, as shown in FIG. 1 of Patent Document 1, “the upper rail has a storage rotation hole of the lock member and a shaft positioned before and after this storage rotation hole. It is considered that the operation itself of directly forming these rotation holes and the shaft support portion in the upper rail is very costly and troublesome. In addition, the above-mentioned “both ends of the hinge pin are rotatably supported by the front and rear shaft support portions”, which is considered to be very costly and labor-intensive.

  On the other hand, “Vehicle seat slide device” of Patent Document 2 is made for the purpose of “providing a vehicle seat slide device capable of realizing a reduction in manufacturing cost and saving space”. As shown in FIG. 1 of the document 2, “the lock mechanism includes a plurality of lock holes arranged in parallel in the longitudinal direction of the lower rail, a support shaft having a rotation axis extending in the longitudinal direction of the upper rail, and a rotating shaft. It has a lock lever that rotates around the axis of movement and can be engaged and disengaged with respect to the lock hole, and the support shaft is supported by a folded portion formed by folding the upper rail inward. Therefore, it has a very complicated structure. That is, it is considered that the technique of Patent Document 2 is very costly and labor-intensive for the manufacturing operation itself.

  Therefore, the inventors of the present invention simply manufacture this type of vehicle slide rail device as a device having sufficient necessary functions and increasing load resistance (hereinafter referred to as lock strength) when locked. As a result of various studies on how to reduce the manufacturing cost, the present invention has been completed.

  In other words, the object of the present invention is to improve the lock device in particular, so that the manufacturing and assembling work as a vehicle slide rail device can be easily performed, and the manufacturing is easily performed at a reduced cost. An object of the present invention is to provide a vehicular slide rail device that can increase the lock strength.

In order to solve the above-described problem, in the vehicle slide rail device according to claim 1, “the slide between the vehicle body side lower rail and the seat side upper rail that are slidably assembled to each other is regulated. A vehicle slide rail device provided with a lock device,
The locking device;
A pair of holding members that are integral with the upper rail and project into the upper rail;
A locking member attached between these holding members with a support arm and capable of swinging in the upper rail;
A first locking claw formed integrally with the locking member and capable of engaging with the locking groove on the lower rail side;
A second locking claw formed integrally with the locking member and capable of engaging with a locking hole on the lower rail side;
This lock claw is provided with a resilient means for biasing the lock member so as to swing in the engagement direction.

  Further, in the vehicle slide rail device according to claim 2, in addition to the feature of claim 1, “the engagement groove and the engagement hole provided on the lower rail side are arranged on the left and right sides with respect to the longitudinal direction of the lower rail. The technical feature is that the first and second lock claws are arranged on the back side of each other.

  According to the vehicular slide rail device according to claim 1, the vehicular slide rail device includes the lock device at three points: a holding member integrally formed on the upper rail, a lock member, and a resilient means. Since it can be configured, the number of parts can be reduced, the machining process can be omitted, and as a result, the cost can be reduced.

  The lock member is provided with a first lock claw and a second lock claw, and each lock claw engages with a locking groove and a locking hole provided in the lower rail, respectively. Therefore, both sides are locked and the lock strength can be increased.

  Further, according to the vehicle slide rail device of the second aspect, in addition to the effect of the first aspect, the first and second lock claws are arranged on the back side, and left and right with respect to the longitudinal direction of the lower rail. Since the engagement grooves and the engagement holes are arranged evenly, the lock strength is evenly applied to both sides of the rail, and the lock strength can be further increased.

FIG. 1 is a side view of a vehicle seat that employs a vehicle slide rail device according to the present invention. FIG. 2 is an exploded perspective view showing the relationship between the lock device and the operation lever of the vehicle slide rail device. FIG. 3 is an enlarged exploded perspective view of the left vehicle slide rail device. FIG. 4 is an enlarged view of a portion of the vehicle slide rail device according to the present invention. FIG. 4A is a longitudinal sectional view, and FIG.

  A vehicle slide rail device according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a vehicle seat that employs a vehicle slide rail device according to the present invention. FIG. 2 is an exploded perspective view showing the relationship between the lock device and the operation lever of the vehicle slide rail device. FIG. 3 is an enlarged exploded perspective view of the left vehicle slide rail device. FIG. 4 is an enlarged view of a portion of the vehicle slide rail device according to the present invention. FIG. 4A is a longitudinal sectional view, and FIG.

  As shown in FIG. 1, a vehicle slide rail device 100 according to the present invention is a lock device that regulates sliding between a vehicle body side lower rail 10 and a seat side upper rail 20 that are slidably assembled with each other. 30 is provided, but the lock device 30 itself is devised. In the general vehicle seat 200, the vehicle slide rail device 100 having a bilaterally symmetrical shape is disposed at both lower portions thereof, and each of the vehicle slide rail devices 100 is an important component of the present invention. There is a locking device 30 that is symmetrical.

  First, as shown in FIG. 2, the lock device 30 is integrated with the upper rail 20, a pair of holding members 21 projecting into the upper rail 20, and a lock member 31 attached to the holding member 21 so as to be swingable. It has. The holding member 21 and the lock member 31 are shaped so that the lock member 31 can be incorporated into the holding member 21, and can be easily integrated as shown in FIG.

  Each holding member 21 may be a separate member welded to the inner surface of the upper rail 20, or may be punched at the same time as the upper rail 20 is manufactured as described in an embodiment described later. Good. That is, as shown in FIG. 3, each holding member 21 may be formed by punching a part of the upper surface of the upper rail 20 and bending it into the upper rail 20. It may be formed.

  When the holding member 21 and the locking member 31 are assembled, the locking member 31 can swing with respect to each holding member 21 on the upper rail 20 side, and a resilient means 40 (one implementation described later) is provided between them. In the form, a torsion spring) is positioned and always biased so as to rotate in a certain direction. Then, a first lock claw 33 that can be engaged with the locking groove 11 on the lower rail 10 side and a second lock claw 34 that can be engaged with the locking hole 12 are formed on the lock member 31. In other words, the first lock claw 33 only needs to move so as to engage with the locking groove 11 on the lower rail 10 side, and the second lock claw 34 is engaged with the locking hole 12 on the lower rail 10 side. It only has to move so that it can match.

  That is, in the vehicle slide rail device 100 completed by attaching the lock device 30, the first lock claw 33 is engaged with the locking groove 11 on the lower rail 10 side, and the first lock claw 34 is engaged with the lower rail 10. The engagement state is maintained by the resilient means 40 positioned between the upper rail 20 and the lock member 31.

  In order to release the engagement state of the first lock claw 33 with respect to the engagement groove 11 and the engagement state of the second lock claw 34 with respect to the engagement hole 12, the elastic force of the elastic means 40 is applied to the lock member 31. However, this is performed by pressing the lock member 31 itself by the operation piece 220 operated by the operation lever 210 described below.

  Needless to say, the lock device 30 configured as described above is configured to be bilaterally symmetric so that it can be applied to the left and right vehicle slide rail devices 100. As shown, they are operated simultaneously by a single operating lever 210. The operation lever 210 is provided at the rear end of the member that is swung by the fulcrum member 230 on the side surface of the vehicle seat 200 by pulling it up at the front lower part of the vehicle seat 200. As a result, the lock device 30 is unlocked.

  Now, the locked state and unlocking operation of the vehicle slide rail device 100 by the lock device 30 configured as described above will be described below. First, the locked state will be described with reference to FIG. As shown in FIG. 4, the locked state by the locking device 30 is such that the first locking claw 33 is engaged in the locking groove 11 on the lower rail 10 side, and the second locking claw 34 is on the lower rail 10 side. The lock member 31 is engaged in the locking hole 12, and the lock member 31 is biased in the locking direction by the elastic means 40, so that the locked state is maintained.

  In order to release the above lock state, a user sitting on the vehicle seat 200 raises the operation lever 210 upward. Then, as can be understood from FIG. 2, the operation piece 220 moves downward about the fulcrum member 230 and pushes down the lock member 31 constituting the lock device 30 against the urging force of the elastic means 40. It will be. As a result, the lock member 31 rotates in the locking release direction. Then, the first lock claw 33 swings downward and leaves the locking groove 11, and the second lock claw 34 swings upward and leaves the locking hole 12. That is, the lock is released.

  Of course, when the user releases the operation lever 210, the operation lever 210 returns to the original position, and the operation piece 220 is separated from the lock member 31 and does not press it. When this happens, the locking member 31 returns to the state shown in FIG.

  As described above, the vehicular slide rail device 100 can be configured by the three points of the locking device 30, that is, the holding member 21, the locking member 31, and the impacting means 40 that are integrally formed with the upper rail 20. The number of parts can be reduced and the processing step can be omitted, resulting in a reduction in cost.

  Further, the lock member 31 is provided with a first lock claw 33 and a second lock claw 34, and each lock claw engages with a locking groove 11 and a locking hole 12 provided in the lower rail 10, respectively. Therefore, both sides are locked and the lock strength can be increased.

  In particular, when the lock device 30 is configured, first, the holding members 21 are formed on the upper rail 20 side. Since these holding members 21 are simultaneously formed by punching when the upper rail 20 is manufactured, Easy to form. In addition, each holding member 21 that supports the lock member 31 in a swingable manner uses a part of the upper rail 20 as described in the best mode described later, that is, is integral with the upper rail 20. Then, the lock member 31 is supported in a stable state without any change in the swing axis where the lock member 31 is to be displaced.

  In assembling the lock device 30, the lock member 31 is inserted between the holding members 21. As a result, the lock member 31 is swingably connected between the holding members 21 of the upper rail 20, and this time, one end of the elastic means 40 is locked to the lock member 31, and the other. The end is brought into contact with the inner surface of the upper rail 20 against the urging force. The elastic means 40 is a torsion spring, and one end of the elastic means 40 is engaged with the lock member 31, so that the lock member 31 is always biased to the position shown in FIG. Thus, the attachment of the locking device 30 to the upper rail 20 is completed.

   After that, the vehicle slide rail device 100 is completed by assembling the upper rail 20 to which the lock device 30 is attached to the lower rail 10. In this assembly, the first lock claw 33 and The upper rail 20 may be simply inserted into the lower rail 10 while preventing the second lock pawls 34 from engaging with the locking grooves 11 and the locking holes 12 on the lower rail side.

   Therefore, the vehicle slide rail device 100 can be easily manufactured and assembled, and can be manufactured easily and at a reduced cost.

   Further, in the vehicle slide rail device 100, the distal end portions of the holding members 21 of the lock device 30 are bent so as to open to the outside. In particular, when assembling the locking device 30, the locking member 31 is inserted from the lower side of the upper rail 20, and the locking portions 32 a formed on the support arms 32 protrude into the upper rail 20. The lock member 31 is inserted between the holding members 21 so as to be engaged in the support holes 21b of the holding member 21, but this insertion operation can be easily performed. This is because the distal ends of the holding members 21 are bent so as to open to the outside, so that the support arms 32 can be inserted smoothly even if the locking portions 32a are formed to protrude.

   Further, a tapered portion 32 b is formed on the outer side of the distal end portion of the support arm 32 that the lock member 31 of the lock device 30 has. In assembling the locking device 30, as described above, the locking member 31 is inserted from the lower side of the upper rail 20, and the locking portions 32 a formed on the respective support arms 32 project into the upper rail 20. The lock member 31 is inserted between the holding members 21 so as to be engaged in the support holes 21b of the holding members 21. However, the inserting operation can be easily performed.

   This is because the tapered portion 32 b is formed outside the distal end portion of the support arm 32 of the lock member 31, so that the locking portion 32 a protrudes from the distal end of the support arm 32 or the distal end of the holding member 21. Even if the bent portion that opens to the outside is not formed, the taper portion 32b guides the insertion of each support arm 32, so that the support arm 32 can be smoothly inserted between the holding members 21. It is.

  Next, an embodiment of the vehicle slide rail device 100 according to the present invention will be described. FIG. 1 shows a side view of a vehicle seat 200 employing the vehicle slide rail device 100 according to the present invention. A part of an operation lever 210 that is operated by a user sitting on the vehicle seat 200 protrudes from a lower front portion of the vehicle seat 200.

  In other words, the user who wants to adjust the position of the vehicle seat 200 pulls the operation lever 210 while sitting on the vehicle seat 200, so that the lock device 30 is locked in the vehicle slide rail device 100. The release is performed. When the vehicle seat 200 is appropriately positioned and the user releases the operation lever 210, the lock device 30 automatically returns to the locked state again.

  Further, as shown in FIG. 2, an operation piece 220 is connected to the operation lever 210 of the vehicle seat 200, and this operation piece 220 is swingably mounted in the upper rail 20 by a fulcrum member 230. It is what That is, the operation piece 220 moves downward about the fulcrum member 230 when the user pulls up the protruding portion of the operation lever 210, and presses a part of the lock member 31 at the tip portion. .

  As shown in FIG. 1, the vehicle slide rail device 100 includes a lower rail 10 that is fixed to the vehicle body side, an upper rail 20 that is slidably assembled to the lower rail 10, and a lock device 30 that is attached to the upper rail 20. The lower rail 10 is formed with a large number of equal pitches with the locking grooves 11 being opened downward. On the other hand, the upper rail 20 is slidably assembled to the lower rail 10 via a rolling ball 23 held by a ball holder, and a seat connection for connecting the vehicle seat 200 to the upper surface thereof. A pin 22 is protruded.

  In the vehicle slide rail device 100 according to the present invention, a pair of openings 21a are formed side by side on the upper surface of the upper rail 20, and these openings 21a are important components constituting the vehicle slide rail 100 according to the present invention. This is a mark formed by punching the holding member 21 for the locking device 30.

  That is, the holding member 21 constituting the locking device 30 is formed by punching a part of the upper surface of the upper rail 20 and bending it into the upper rail 20. The front ends of these holding members 21 are bent so as to spread outward (that is, in the respective directions forward and rearward of the upper rail 20 and away from each other). is there. Further, a support hole 21b for attaching a lock member 31 to be described later is formed at the end of each holding member 21.

  Further, with respect to the holding member 21, the lock member 31 is fitted into both the holding members 21 on the upper rail 20 side. In other words, the lock member 31 is attached between the holding members 21 so as to be able to swing within the upper rail 20.

  And about the upper rail 20 which formed this holding member 21, the rocking | fluctuation grooves 24 and 24 are formed in the both sides | surfaces corresponding to the lock member 31 mentioned later. These swing grooves 24 and 24 form a space in which the first lock claw 33 and the second lock claw 34 of the lock member 31 can swing, and the first lock claw 33 and the first lock claw 33 in the locked state. The tip of the two lock claws 34 is projected so as to be able to engage with the locking groove 11 and the locking hole 12 on the lower rail 10 side.

  The lock member 31 has a pair of front and rear support arms 32, and a locking portion 32 a is formed on the support arm 32, and the locking portion 32 a is engaged in a support hole 21 b formed in the holding member 21. I can do it.

  About each support arm 32, you may implement by forming the taper part 32b in the front-end | tip part outer side. The taper portion 32b can be formed on each support arm 32 even if the locking portion 32a is formed to protrude from the tip of the support arm 32 or the bent portion that opens outward is not formed on the tip of the holding member 21. Therefore, the support arm 32 is smoothly inserted between the two holding members 21.

  Of course, the lock member 31 has a plurality of first lock claws 33 and second lock claws 34 whose front end portions engage with the engagement grooves 11 and the engagement holes 12 on the lower rail 10 side. is there.

  And the elastic means 40 in this embodiment employs what is called a torsion spring. The torsion spring 40 is made of a metal wire and has a front end portion 40a extending toward the lock member 31 and a rear end portion 40b formed in a “U” shape in plan view. The rear end portion 40b is provided with a pair of locking portions 40c projecting on both sides in the width direction. Then, the front end portion 40a is locked in the hole 31a in the central portion of the main body of the lock member 31, and both the locking portions 40c of the rear end portion 40b are locked in the holes 25 formed on both side walls of the upper rail 20, respectively. The elastic means 40, which is a torsion spring, is attached to the inside of the upper rail 20 while urging the lock member.

DESCRIPTION OF SYMBOLS 100 Vehicle slide rail apparatus 10 Lower rail 11 Locking groove 12 Locking hole 20 Upper rail 21 Holding member 21a Opening 21b Support hole 22 Seat connection pin 23 Rolling ball 24 Swing groove 25 Hole 30 Locking device 31 Locking member 31a Hole 32 Support arm 32a Locking portion 32b Tapered portion 33 First lock claw 34 Second lock claw 40 Bounce means (torsion spring)
40a Front end portion 40b Rear end portion 40c Locking portion 200 Vehicle seat 210 Operation lever 220 Operation piece 230 Support point member

Claims (2)

A vehicle slide rail device provided with a lock device for restricting sliding between a lower rail on a vehicle body side and a seat side upper rail assembled so as to be slidable from each other,
The locking device;
A pair of holding members that are integral with the upper rail and project into the upper rail;
A locking member attached between these holding members with a support arm and capable of swinging in the upper rail;
A first locking claw formed integrally with the locking member and capable of engaging with the locking groove on the lower rail side;
A second locking claw formed integrally with the locking member and capable of engaging with a locking hole on the lower rail side;
A vehicular slide rail device characterized by comprising a resilient means for biasing the lock member so that the lock claw swings in the engaging direction.   Engagement grooves and engagement holes provided on the lower rail side are equally arranged on the left and right with respect to the longitudinal direction of the lower rail, and the first and second lock claws are arranged on the back side. The vehicle slide rail device according to claim 1, which is configured as described above.

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