JP2010030461A - Seat slide device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that shifting of an axial line of a side part arm of an operating lever in a bend-in-half manner with respect to an axial line of a lock lever easily gives an uncomfortable feel at the time of pulling up the operating lever, and rattling of the operating lever with respect to the lock lever gives an anxiety feel at the time of operation of the operating lever. <P>SOLUTION: An operating lever 12 has an insert part 26, into which a support shaft 14 provided to an upper rail is inserted, in its side part arm 12a, and the insert part 26 has an opening 26a in an upper face thereof so that the opening 26a is an engage groove of a substantially L shape extending forward of the side part arm. A lock release arm 22 has an upper stopper piece 24, with which the side part arm 12a of the operating lever 12 can engage, at a front position of the support shaft 14. A support end 28a of a biasing means 28 for biasing the side part arm 12a upwardly has an insert opening 30 between the biasing means 28 and the upper stopper piece 24 of the lock release arm 22 at the front position of the support shaft 14. The side part arm 12a inserted via the insert opening is held from below with respect to the support shaft 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seat slide device that supports a seat of an automobile or the like so as to be slidable in the front-rear direction, and more particularly to a seat slide device provided with a towel bar-type operation lever having a substantially plane U shape.

  As a seat slide device for a vehicle seat, a lock mechanism that includes a lower rail fixed to the floor and an upper rail that supports the seat and is slidably assembled to the lower rail, and locks the upper rail to the left and right lower rails. There is known a structure in which the seat body is firmly locked to the slide rail (for example, Japanese Patent Laid-Open No. 09-011780). The left and right lock mechanisms are connected by a so-called towel bar type operation lever having a substantially U-shaped plane, and the left and right locks are simultaneously released by pulling up the operation lever.

Japanese Patent Application Laid-Open No. 09-011780 discloses a configuration that enables the attachment only by insertion from the front in order to improve the attachment performance.
Japanese Patent Laid-Open No. 09-011780

  By the way, in the structure of Unexamined-Japanese-Patent No. 09-011780, the side arm of an operation lever is connected with the lock lever supported so that rocking | fluctuation is possible by the support at two front and back separation. For this reason, when the operation lever is lifted to be unlocked, the axis of the side arm of the operation lever is displaced in a bent manner by the clearance on the rear side with respect to the axis of the lock lever, and it is easy to feel uncomfortable during the operation.

  Further, in addition to the clearance of the pivotal support portion of the lock lever, the operation lever is easily rattled to the lock lever by the clearance on the rear side of the lock lever, and it cannot be denied that anxiety is given during operation.

  An object of the present invention is to provide a seat slide device with improved operational feeling and operability while securing high operation lever mounting performance.

  To achieve the above object, according to the first aspect of the present invention, the upper rail has a support shaft that protrudes inward of the seat, and can swing up and down with respect to the support shaft so as to be interlocked with the lock mechanism. The pivot-supported unlocking arm has an upper stopper piece engageable with the side arm of the operation lever at the front position of the support shaft, and the operation lever has an insertion portion through which the support shaft is inserted. Are formed. And the support end of the urging means for urging the side arm of the operation lever upward is arranged with a predetermined insertion opening between the upper stopper piece of the unlocking arm at the front position of the support shaft, The operation lever inserted through the insertion opening by forming the insertion portion provided in the side arm of the operation lever as an approximately L-shaped engagement groove having an opening on the upper surface and extending in front of the side arm. The side arm can be held from below the support shaft.

  According to the second aspect of the present invention, the biasing means is a torsion spring wound around the support shaft, and the free end of the torsion spring serves as a support end on the lower surface side of the side arm of the operation lever. It extends to the front position.

  According to the third aspect of the present invention, the free end of the torsion spring serving as the biasing means is engaged with the notch-shaped engaging portion formed on the lower surface of the side arm of the operating lever, thereby It is possible to prevent withdrawal.

  In the present invention according to the first aspect, since the side arm of the operation lever is directly connected to the support shaft serving as the swing center, it is possible to easily obtain a good operation feeling that does not cause a middle break during operation. .

  Since the insertion portion of the side arm of the operation lever is formed as a substantially L-shaped engagement groove having an open top surface, the support shaft is operated under an operation that is continuous with the insertion operation from the front with respect to the insertion opening. Can be engaged. Therefore, it is possible to easily ensure both high mounting performance and good operation feeling without complicating the configuration.

  Further, in the present invention according to claim 2, since the urging means is a torsion spring wound around the support shaft, an appropriate urging force can be applied to the side arm of the operation lever without complicating the configuration. .

  According to the third aspect of the present invention, the free end of the torsion spring serving as the urging means is engaged with a notch-shaped engaging portion formed on the lower surface of the side arm of the operating lever to prevent the operating lever from being detached. And the configuration can be simplified.

  Between the upper stopper piece of the unlocking arm and the support end of the urging means, an insertion opening into which the side arm terminal of the operation lever can be inserted is provided, and a substantially L-shaped engagement groove whose upper surface is opened in the side arm Is provided as an insertion part of the support shaft.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1, 2, and 3 show a perspective view, a partial front view, and a partial perspective view of the seat slide device of the present invention. In the present invention, the operation lever is with respect to a pivot that serves as a swing fulcrum. Held directly.

  As can be clearly understood from FIG. 1, the seat slide device 10 includes a lower rail 16 fixed to a floor, an upper rail 18 that supports a seat (not shown) and is slidably assembled to the lower rail, and a lower rail. And a lock mechanism 20 that restricts the sliding of the upper rail with respect to the upper rail, and is configured to allow the upper rail to slide with respect to the lower rail by an unlocking operation with respect to the locking mechanism by the operation lever 12 formed in a substantially bar-shaped towel bar shape. Has been.

  The basic configuration of this type of seat slide apparatus 10 is known as described in, for example, Japanese Patent Application Laid-Open No. 09-011780, and the basic configuration itself is not the gist of the present invention. Detailed description of the configuration is omitted.

  As shown in FIGS. 1 to 3, in the present invention, the upper rail 18 has a support shaft 14 protruding from the seat inward side. Then, the unlocking arm 22 pivotally attached to the support shaft 14 so as to be interlocked with the lock mechanism 20 can be engaged with the upper stopper piece 24 engageable with the side arm 12a of the operation lever 12. The operation lever 12 is formed with an insertion portion (engagement groove) 26 through which the support shaft is inserted substantially at the end of the side arm 12a.

  In this manner, the side arm 12a of the operation lever is directly connected to the support shaft 14. The insertion portion 26 of the side arm 12a of the operation lever has an opening 26a on the upper surface, and is formed in a substantially L-shaped engagement groove extending forward of the side arm.

  In this configuration, the support shaft 14 can be inserted into the side arm 12a of the operation lever through the opening 26a on the upper surface. Since the insertion portion 26 is a substantially L-shaped engagement groove extending forward, the support shaft can be held by engaging the support shaft 14 with the tip of the engagement groove.

  Further, the support end 28a of the urging means 28 that urges the side arm 12a of the operation lever upward, that is, in the direction of engagement with the upper stopper piece 24 of the unlocking arm is unlocked at the front position of the support shaft 14. An insertion opening 30 is arranged between the upper stopper piece of the arm.

  As the urging means 28, for example, a torsion spring wound around the support shaft 14 and having its base end 28b engaged with the unlocking arm 22 can be exemplified, and the free end of this torsion spring is extended forward of the support shaft. When the free end is used as a support end 28a and engaged with the side arm 12a of the operating lever from below, the operating lever 12 can be biased upward.

  Here, in this embodiment, a notch-like engagement groove (notch) in which the support end (free end) 28a of the torsion spring (biasing means) is engaged with the lower surface of the side arm 12a of the operation lever. ) 32 is preferably provided. According to such a configuration, the engagement of the support end 28a with the engagement groove 32 can easily prevent the operation lever from being detached after being inserted into the support shaft 14 without providing another member.

  In this configuration, the operation lever 12 is attached as follows. 4 (A), 4 (B), 5 (A), and 5 (B) respectively show operation work diagrams of the operation lever.

  As shown in FIG. 4A, for example, a tapered surface 34 is formed at the end of the side arm 12a of the operation lever, and the side arm is inserted into the insertion opening 30 from the front of the seat using this tapered surface. The Then, as shown in FIG. 4 (B), the spindle 14 is advanced along the upper surface of the rear end thereof, and as shown in FIG. 5 (A), when the engagement groove opening 26a is aligned with the spindle, By lifting the end of the side arm 12a of the operation lever upward, the support shaft is engaged in the engagement groove as shown in FIG.

  Further, the operation lever 12 is pushed further along the support shaft 14 along the lower surface of the engagement groove (insertion portion) 26, the edge of the engagement groove is engaged with the support shaft, and the notch (engagement groove) When the support end 28 a is engaged with 32, the operation of attaching the operation lever 12 to the support shaft is completed.

  The state shown in FIG. 2 is the initial state of the operation lever 12, and in this initial state, the locking mechanism 20 of the seat slide device is in the locked state, that is, the sliding restriction state of the upper rail 18 relative to the lower rail 16 (see FIG. 1). From this state, when the operation end 12a of the operation lever 12 is pulled up, the lock release arm 22 is swung in the clockwise direction in the drawing integrally with the operation lever, and the lock mechanism 20 is unlocked.

  It is preferable to provide a damper 36 made of, for example, a synthetic rubber material on the upper stopper piece 24 of the lock release lever. By adopting such a configuration, it is possible to reliably prevent the generation of abnormal noise when the side arm 12a of the operation lever contacts the upper stopper piece 24.

  As described above, in the present invention, the side arm 12a of the operating lever is directly connected to the support shaft 14, and is swung around the support shaft, so that the lock release arm 22 is not bent. Release operation is possible. Therefore, it is possible to easily ensure a good operational feeling without a sense of incongruity.

  Then, by connecting the side arm 12a of the operation lever directly to the support shaft 14, an unlocking operation without rattling can be obtained, so that anxiety for the operator can be surely eliminated.

  Furthermore, in the present invention, since the insertion portion 26 provided in the side arm 12a of the operation lever through which the support shaft 14 is inserted is a substantially L-shaped notch-like engagement groove having an opening 26a on the upper surface, It is possible to easily secure the connection under the operation that is continuous with the insertion from the front. Therefore, it is possible to easily ensure both high mounting performance and good operation feeling without complicating the configuration.

  In this embodiment, a torsion spring wound around the support shaft 14 is illustrated as the biasing means 28, but the biasing means may be formed from other spring members or the like. However, by using the torsion spring as the biasing means 28, an appropriate biasing force can be easily ensured without increasing the arrangement space.

  The free end of the torsion spring is used as the support end 28a of the urging means, and this support end is engaged with the notch 32 provided on the lower surface of the side arm 12a of the operation lever. If separation of the side arms is prevented, it is possible to easily secure the holding without increasing the number of parts.

  The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations, etc. within the technical scope of the present invention are included in the present invention. Needless to say.

  The present invention is not limited to a seat slide device for automobile seats, and can be applied to a wide range of seat slide devices for seats of airplanes, ships, trains and the like.

1 is a perspective view of a seat slide device according to an embodiment of the present invention. 1 is a partial front view of a seat slide device according to an embodiment of the present invention. 1 is a partial perspective view of a seat slide device according to an embodiment of the present invention. The operation work drawing of the operation lever is shown. The operation work drawing of the operation lever is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Seat slide apparatus 12 Operation lever 12a Side arm 14 Support shaft 22 Lock release arm 24 Upper stopper piece 26 Insertion part (engagement groove)
28 Biasing means (torsion spring)
30 Insertion opening

Claims (3)

A towel bar type with a substantially U-shaped plane, comprising a lower rail fixed to the floor, an upper rail that supports the seat and is slidably assembled to the lower rail, and a lock mechanism that restricts the sliding of the upper rail with respect to the lower rail In the seat slide device that enables sliding of the upper rail with respect to the lower rail by the unlocking operation with respect to the lock mechanism by the operation lever formed in
The upper rail has a support shaft projecting from the inner side of the seat,
An unlocking arm pivotally supported so as to be swingable up and down with respect to the support shaft so as to be interlocked with the lock mechanism has an upper stopper piece engageable with a side arm of the operation lever at a front position of the support shaft,
The operation lever is formed with an insertion part for inserting and arranging the support shaft in its side arm,
The support end of the urging means for urging the side arm of the operation lever upward is disposed with a predetermined insertion opening between the support stopper and the upper stopper piece of the unlocking arm at a position in front of the support shaft. The side of the operating lever inserted through the insertion opening is formed as a substantially L-shaped engaging groove having an opening on the upper surface and extending in front of the side arm. A seat slide device characterized in that the arm can be held from below with respect to the support shaft. The biasing means is a torsion spring wound around a support shaft, and the free end of the torsion spring is extended as a support end to the front position of the support shaft on the lower surface side of the side arm of the operation lever. Seat slide device. 3. The seat slide according to claim 2, wherein the free end of the torsion spring serving as the biasing means is engaged with a notch-like engaging portion formed on the lower surface of the side arm of the operating lever, thereby preventing the operating lever from being detached. apparatus.

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