JP2570753Y2 - Seat slide device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention provides a lock mechanism for slidably fitting an upper T-shaped cross-section upper rail to a groove-shaped cross-section lower rail opened upward, and for restricting both rails from sliding at a desired position. The present invention relates to a seat slide device provided.

[0002]

2. Description of the Related Art As a conventional seat slide device, for example, a device provided with a walk-in mechanism having a memory function is known. In other words, the walk-in mechanism with the memory function includes a walk-in lever that is swingably mounted on the horizontal surface of the upper rail having an inverted T-shaped cross section so as to be swingable about a vertical axis, and a vertical wall of the upper rail. It has a memory lever attached to be able to swing around the horizontal axis, and the walk-in lever swings to the operating position and latches in order to walk-in the seat in conjunction with the forward lean of the backrest The member is disengaged from the locking portion on the lower rail side, and the memory lever swings to the restraining position to restrain the walk-in lever in the operating posture. On the other hand, when returning the seat from the walk-in state, the memory lever swings from the restrained position to the restrained release position, the walk-in lever swings from the operating position to the non-operating position, and the latch member engages with the locking portion. In addition, the seat is restrained at a so-called memory position. For example, as shown in FIGS. 7 to 10, the memory plate 3 having an L-shaped cross section is fixed to the horizontal flange portion 2 of the lower rail 1, as shown in FIGS. It is possible to set one. That is, when returning the seat, the release end 5 of the memory lever 4 rides on the memory plate 3, and the memory lever 4 swings from the restrained position shown in FIG. 10 to the restrained release position shown in FIG. The lever 6 is released. As a means for fixing the memory plate 3, welding is generally used.

[0003]

However, in such a conventional seat slide device, since the memory plate 3 is welded to the horizontal flange portion 2 of the lower rail 1, thermal deformation and adhesion of spatter due to welding occur. However, after the memory plate 3 is welded, there is a problem that the memory position cannot be changed, and it is impossible to cope with the presence or absence of the walk-in mechanism. The present invention
Focusing on such conventional problems, the fixing means is not based on welding, eliminates thermal deformation and adhesion of spatters due to welding, makes a memory plate detachable, and allows the memory position to be removed. It is an object of the present invention to provide a seat slide device which can be changed and can cope with both specifications with and without a walk-in mechanism.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is that an upper rail (21) having an inverted T-shaped cross section can slide on a lower rail (25) having a groove-shaped cross section opened upward. The lower rail (25) is provided with a lock mechanism for locking both rails so that they cannot slide at desired positions.
6), the side walls (27, 27) rise from both sides, and the horizontal flanges (28, 2) inward from the upper end of each side wall.
8), and the upper rail (2)
1) The T-shaped head (24) is fitted downward into the groove of the lower rail (25), and the vertical wall portions (23, 23) stand up from the head (24). A latch member (34) attached to the upper rail (21), engaged with and disengaged from a locking portion (36, 36, ...) connected to the lower rail (25), and operated by an operating lever; When the walk-in lever (41) swings to the operating position in conjunction with the walk-in operation of moving the backrest forward,
Memory lever (45) is walk-in lever (41)
When the seat is returned to the state before the walk-in operation, the memory lever (45) is placed on the memory plate (51) while the latch member (34) is disengaged. Go up and use the memory lever (4
5) The walk-in lever (41) is displaced to release the restraint, the walk-in lever (41) swings from the operating position to the non-operation position, and the latch member (34) is configured to be engageable. A mechanism (40) is provided, and a base portion (52) having an inverted groove shape is formed of an elastic material on the memory plate (51) so that the base portion (52) is externally fitted to the horizontal flange (28) of the lower rail (25) from above. One of the two side flanges (55, 56) of the base portion (52) is extended along the side wall (27) of the lower rail (25), and the lower end of the extended flange is provided with an engagement claw (57). While forming both side flanges (55, 5) of the base portion (52).
A hook claw (58) is formed on the other side of 6), and the engaging claw (5) is formed so that the memory plate (51) cannot be pulled out.
7) is connected to the locking portions (36, 36, 36) of the lower rail (25).
..) And resiliently engage with the locking claw (58).
Is resiliently locked to the inner edge of the horizontal flange (28) of the lower rail (25).

[0005]

[Operation] The memory plate (51) is connected to the lower rail (2).
In order to attach to the horizontal flange (28) of (5), the base portion (5) of the memory plate (51) having an inverted groove-shaped cross section is used.
2) may be externally fitted to the horizontal flange (28) from above. As a result, one of the flanges (55, 56) on both sides of the base portion (52) follows the side wall (27) of the lower rail (25), and the flanges (55, 56) on both sides of the base portion (52). The other is a lower rail (2
5) along the inner edge of the horizontal flange (28).

Further, if the base portion (52) is externally fitted to the horizontal flange (28) from above, the engaging claw (57) formed on one of the side flanges (55, 56).
Are resiliently engaged with the locking portions (36, 36,...) Of the lower rail (25), and the hook claws (55, 56) formed on the other of the two side flanges (55, 56) of the base portion (52). 5
8) is resiliently locked to the inner edge of the horizontal flange (28) of the lower rail (25), and the memory plate (51) is connected to the horizontal flange (2) of the lower rail (25).
8) It is attached irremovably. In order to change the mounting position of the memory plate (51), the engaging claws (57) are engaged with the engaging portions (36, 36,...) Of the lower rail (25) against the resilience of the flanges (55, 56) on both sides. ), And the hooking claw (58) may be removed from the inner edge of the horizontal flange (28) of the lower rail (25).

In a normal use state in which the backrest of the seat stands up and stands still, the latch member (34) provided on the upper rail (21) side corresponds to the locking portion connected to the lower rail (25). The upper rail (21) and the lower rail (25) are not slidable, and the seat is restrained from moving forward and backward. The latch member (34) is disengaged from the locking portion by operating and disengaging with the operation lever, and when released, the upper rail (21) and the lower rail (25) are slidable, and the seat is moved to a desired position in front and rear. And release the operation lever to release the latch member (34).
Are engaged with the locking portions (36, 36,...), And the seat is restrained at that position.

At this time, the walk-in lever (41) is in the non-operating position, the memory lever (45) is at the release position, and the memory lever (45) is separated from the walk-in lever (41).

When the backrest is depressed at the time of getting on or off, the walk-in lever (41) interlocks and swings from the non-operation position to the operation position, whereby the latch member (34) engages the locking portion (3).
6, 36,...), The seat is released, and a walk-in operation is performed to move to the front end of the forward / backward movement stroke, so that a space for getting on / off is secured. When the walk-in lever (41) is interlocked with the forward movement of the backrest, the memory lever (45) is engaged with the walk-in lever (41), and the walk-in lever (41) is restrained from returning to the operating position. The walk-in lever (41) does not return even if the backrest of the seat moved to the front end of the front-back movement stroke is returned, and the latch member (34) remains released. When the seat is moved backward by raising the backrest, the memory lever (45) rides on the memory plate (51) on the lower rail (25) side, and the memory lever (45)
Is displaced and detaches from the walk-in lever (41),
The walk-in lever (41) swings to the non-operation position, and the latch member (34) at that position engages with the corresponding locking portion (36, 36).
36, ...), the seat is restrained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention, in which a seat slide device 10 is equipped with various mechanisms mounted on a pair of rail units 20 arranged in parallel under a seat (not shown). Become. As shown in FIGS. 1 and 2, the rail unit 20 is formed by slidably fitting an upper rail 21 to a lower rail 25, and the upper rail 21 is a rail piece 2.
The lower rail 25 has an upward groove shape that holds the T-shaped head 24 of the upper rail 21.

That is, the upper rail 21 is connected to the vertical wall 2
3 and 23 are joined together and the rail pieces 22 and 22 are integrally joined in an inverted T-shape. The horizontal flanges 24a and 24a are bent horizontally from the lower ends of the vertical wall parts 23 and 23 and separated to the opposite side. The head 24 is formed by the holding flanges 24b, 24b that have been raised. The lower rail 25 has a groove-shaped cross section extending forward and backward.
The horizontal flanges 28 and 28 are bent at the upper ends thereof, and the holding flanges 29 and 29 are further bent vertically downward. The upper rail 21 is slidably inserted and fitted to the lower rail 25,
Rollers, not shown, are interposed between the lower surface of the head 24 of the upper rail 21 and the upper surface of the bottom wall 26 of the lower rail 25, and the horizontal flange 24a and the holding flange 24b of the upper rail 21 and the horizontal flange 28 and the holding flange 24 of the lower rail 25 are provided. A ball not shown is interposed between the holding flange 29 and the holding flange 29.

The rail unit 20 includes a lock mechanism 30.
Is provided. In the lock mechanism 30, on the upper rail 21 side of the rail unit 20, various members are mounted on a support bracket 31 fixed to the vertical wall portions 23,23. The support bracket 31 has a base flange 31a applied to one side of the vertical wall portion 23, spot-welded, and
It is fixed by caulking with b. A horizontal surface portion 32 extends from a base flange 31a of the support bracket 31 so as to protrude, and curl portions 32a, 32a are formed at the distal end thereof.
Pushed rod 33a is attached to operating shaft 33 via a bracket.
Is fixed.

The curled portions 32a, 3 of the support bracket 31
2a, the base of the latch member 34 is
The latch member 34 is provided with an engagement / disengagement end 35. Lower rail 25 corresponding to latch member 34
Locking portions 36, 36, which are through holes through which the engaging / disengaging end 35 is selectively engaged / disengaged, are connected to one of the side walls 27. Operation axis 3
A latch member 3 is provided by a biasing coil spring (not shown).
Is urged in the direction in which the engaging end 35 engages with the locking portion 36. A walk-in mechanism 40 with a memory function is provided in addition to the lock mechanism 30.

As shown in FIGS. 2 and 4, the walk-in mechanism 40 is supported by a walk-in lever 41 pivotally supported by a horizontal surface portion 32 of a support base 31 fixed to the upper rail 21, and pivotally supported by the upper rail 21. And a memory lever 45 for restraining the walk-in lever 41. The walk-in lever 41 is provided on the horizontal surface portion 38 of the support base 37 via a vertical shaft 41a.
Is pressed to rotate the operation shaft 33 to cause the latch member 34 to be disengaged from the locking part 36 (an attitude shown in FIG. 5) and a non-operating attitude for enabling the latch member 34 to be engaged with the locking part 36. (Posture shown in FIG. 6). The walk-in lever 41 has a restrained arm 44, and the restrained arm 44 extends to the opposite side through a long groove 23 a formed in the vertical wall 23 of the upper rail 21. A connecting pin 44a is provided at the tip of the restrained arm 44, and an interlocking cable 49 that is pulled when the backrest is tilted forward is connected to the linking pin 44a so as to interlock with the tilting of the backrest of the seat (not shown). I have.

The memory lever 45 is pivotally connected to the vertical wall 23 of the upper rail 21 by a pin 37b on the opposite side of the base flange 37a of the support base 37 to a restraining position and a restraining position about a horizontal axis. Supported. A restraining end 46 is formed at the swinging end of the memory lever 45. The restraining end 46 is provided with a claw 46a for locking the restrained arm 44 of the walk-in lever 41 in the restrained position. A release end 47 is formed at the tip of the swing end of the memory lever 45, and the release end 47 is provided with a release piece 47a that rides on the memory plate 51 protruding from the horizontal flange 28 of the lower rail 25.

As shown in FIGS. 1 and 3, the memory plate 51 is made of an elastic resin material, and has a base portion 52 having an inverted groove-like cross section so as to be fitted to the horizontal flange 28 of the lower rail 25 from above. A projecting flange 53 projecting upward from the portion 52 is integrally formed. An outer flange 55 of the base 52 extends downward along the side wall 27 of the lower rail 25, while an inner flange 56 of the base 52 extends downward along the holding flange 29 of the lower rail 25. A pair of front and rear engaging claws 57 which can resiliently engage with the locking portions 36, 36,... Of the lower rail 25 are provided at the lower end of the outer flange 55 extending downward so that the memory plate 51 cannot be pulled out. On the inner flange 56 of the base portion 52, a locking claw 58 that resiliently engages with the lower edge of the holding flange 29, which is the inner edge of the horizontal flange 28 of the lower rail 25, is formed. ing. The front end of the protruding flange 53 of the memory plate 51 is formed as a tapered portion 54 inclined downward and forward. As shown in FIGS. 2 and 4, a biasing spring 49a is suspended between the swing end of the walk-in lever 41 and the swing end of the memory lever 45, and the walk-in lever 41 is not operated by the bias spring 49a. In addition to being urged in the direction of swinging to the posture, the restraining end 46 is urged in a direction of engaging with the restrained arm 44 of the walk-in lever 41.

At the restraining end 46 of the memory lever 45, a push-up cam portion 48 which is inclined downward and forward is formed continuously with the claw 46a. The tilt angle of the push-up cam portion 48 is determined by setting the walk-in lever 41 to the biasing spring 49a.
The arm 44 is set at an angle at which the restrained arm 44 can push up the restraining end 46 when the swinging motion is caused by the urging force described above. Is loosened, and the height position of the end of the push-up cam portion 48 is a position where the release piece 47a of the release end 47 of the memory lever 45 is kept away from the memory plate 51 at the restraint release position. Is set to

Next, the operation will be described. Memory plate 5
In order to attach the base 1 to the horizontal flange 28 of the lower rail 25, the base portion 52 of the memory plate 51 having an inverted groove-shaped cross section may be fitted to the horizontal flange 28 from above with its groove opening down. As a result, FIG.
As shown in FIG. 5, the outer flange 55 of the base portion 52 follows the side wall 27 of the lower rail 25, and the inner flange 56 of the base portion 52 follows the holding flange 29 of the lower rail 25. Further, if the base portion 52 is fitted to the horizontal flange 28 from above, the pair of front and rear engaging claws 57 formed on the outer flange 55 is engaged with the lower rail 25 as shown in FIG. Stop 3
6, 36,..., Respectively, resiliently engage with corresponding ones of the lower rail 25 and the retaining claws 58 formed on the inner flange 56 of the base portion 52.
The memory plate 51 is resiliently locked to the lower edge of the lower rail 25 and is fixed to the horizontal flange 28 of the lower rail 25 so as not to come off.

In order to change the mounting position of the memory plate 51, the engaging claw 57 is disengaged from one of the locking portions 36, 36,... Of the lower rail 25 against the resilience of the flanges 55, 56 on both sides. At the same time, the hooking pawl 58 may be detached from the lower edge of the holding flange 29 of the lower rail 25.
Thus, the base 52 of the memory plate 51 is detached from the horizontal flange 28 of the lower rail 25, and after the position of the memory plate 51 is changed, the base 52 of the memory plate 51 is externally fitted to the horizontal flange 28 again. What should I do? When the backrest of the seat (not shown) is upright and the walk-in operation is not performed, the walk-in lever 41 is in the non-operation position shown in FIG.
The latch member 34 is held at the lock-on position, and the engagement / disengagement end 35 is engaged with the locking portion 36, so that the upper rail 21 and the lower rail 25 cannot slide.

When the operating shaft 33 is operated, the latch member 34 is operated.
Is rotated, the engagement / disengagement end 35 is disengaged from the locking portion 36 and unlocked, and the seat can be moved back and forth. When the operation shaft 33 is opened at an appropriate position, the engagement / disengagement end 35 of the latch member 34 meshes with the corresponding locking portion 36 at that position, and the seat is fixed at a desired front-rear position. When the back of the seat is defeated, a walk-in operation is performed. The interlocking cable 49 is pulled by the forward movement of the backrest, the restrained arm 44 of the walk-in lever 41 is pulled backward by the connecting pin 44a, and the walk-in lever 41 rotates counterclockwise in FIG. From the working posture.

When the walk-in lever 41 rotates and assumes the operating position, the latch member 34 is interlocked, the engagement / disengagement end 35 is disengaged from the locking portion 36, and the lock mechanism 30 is in the lock-off state. The seat that can be moved forward moves to the front end position by the biasing force of a spring (not shown), and a space for getting on and off the rear seated person is formed. When the walk-in lever 41 rotates, the biasing force of the biasing spring 49a causes the memory lever 45 to swing from the restrained release position to the restrained position, and the claw 46a of the restrained end 46 of the memory lever 45 moves to the restrained arm 44.
To restrict the walk-in lever 41 to the operating posture as shown in FIG. Even when the seat moves forward, the lock-off state is maintained as long as the backrest is depressed.

Next, when the backrest of the seat is raised, the interlocking cable 49 pulling the walk-in lever 41 is loosened, but the claw 46a of the restraining end 46 of the memory lever 45 is loosened.
Is engaged with the restrained arm 44 and the walk-in lever 41
, The latch member 34 is held at the release position, and the seat can be moved even when the backrest is raised.
Therefore, when the seat at the front end position of the movement stroke is moved rearward, the upper rail 21 of the rail unit 20, the lock mechanism 30, and the walk-in mechanism 40 also move rearward. The release piece 47a of the release end 47 is moved backward so that the memory plate 5 of the horizontal flange 28 of the lower rail 25 is moved.
When the rider rides on the first taper portion 54, the memory lever 45
Gradually rotates from the restraining position to the restraining release position against the biasing force of the biasing spring 49a, the claw 46a of the restraining end 46 disengages from the restrained arm 44 of the walk-in lever 41, and the walk-in lever 41 is restrained. It is released.

When the walk-in lever 41 is released and swings to the non-operation position by the urging force of the urging spring 49a, the latch member 34 also returns, and the engagement / disengagement end 35 engages with the locking portion 36 of the lower rail 25, Upper rail 21 and lower rail 2
5 are mutually immovably restrained. When the walk-in lever 41 swings to the non-operation position due to the urging force of the urging spring 49a, the push-up cam portion 48 formed at the restraining end 46 of the memory lever 45 is moved to the restricted arm of the walk-in lever 41. When the restrained arm 44 moves to the end of the push-up cam portion 48, the release piece 47a of the release end 47 of the memory lever 45 is separated from the memory plate 51 and is separated. Since the state is maintained, the claw 46a of the restraining end 46 of the memory lever 45 does not move back and forth in a state of being in contact with the memory plate 51 at the time of normal front / rear position adjustment of the seat. Can be prevented. In the above embodiment, the base 52 and the protruding flange 53 are integrally formed of an elastic resin material. However, at least the protruding flange 53 may be formed of an elastic resin material. You may shape | mold separately with a metal material.

[0024]

According to the seat slide device of the present invention, if the base of the memory plate having the reverse groove-shaped cross-section is fitted to the horizontal flange from above with the groove opening facing downward, One of the two side flanges of the base portion is along the side wall of the lower rail, and the other of the two side flanges of the base portion is along the inner edge of the lower rail 25, and the engaging claw formed on one of the two side flanges is eventually formed. , While resiliently engaging the locking portion of the lower rail,
The hook claw formed on the other of the two side flanges of the base part,
Since the memory plate is resiliently locked to the inner edge of the horizontal flange of the lower rail 25, the memory plate can be removably attached to the lower rail without welding, so that heat deformation and adhesion of spatter due to welding can be achieved. There is no, it is possible to change the mounting position of the memory plate,
Both specifications with and without a walk-in mechanism can be supported.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a seat slide device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the seat slide device according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view of a main part of the seat slide device showing one embodiment of the present invention;

FIG. 4 is a plan view of the memory mechanism showing one embodiment of the present invention;

FIG. 5 is an explanatory view of the operation of the seat slide device showing one embodiment of the present invention.

FIG. 6 is an operation explanatory view of the seat slide device showing one embodiment of the present invention.

FIG. 7 is a partial perspective view of a seat slide device showing a conventional example.

FIG. 8 is a sectional view of a main part of a seat slide device showing a conventional example.

FIG. 9 is an operation explanatory view of a seat slide device showing a conventional example.

FIG. 10 is an operation explanatory view of a seat slide device showing a conventional example.

[Description of Signs] 10 ... Seat slide device 20 ... Rail unit 21 ... Upper rail 23 ... Vertical wall part 24 ... Head 25 ... Lower rail 26 ... Bottom wall 27 ... Side wall 28 ... Horizontal flange 51 ... Memory plate 29 ... Holding flange ( 30) Lock mechanism 33 ... Operation shaft 34 ... Latch member 36 ... Locking part 40 ... Walk-in mechanism 41 ... Walk-in lever 45 ... Memory lever 47 ... Release end 51 ... Memory plate 52 ... Base part 55 ... Outside flange 56 ... inner flange 57 ... engaging claw 58 ... locking claw

Claims (1)

(57) [Scope of request for utility model registration] 1. A seat slide device comprising a lock mechanism for slidably fitting an upper rail having an inverted T-shaped cross section to a lower rail having a groove-shaped cross section opened upward, and restraining both rails from sliding at a desired position. The lower rail has side walls rising from both sides of the bottom wall, and horizontal flanges are respectively formed inward from the upper ends of the side walls. The upper rail has a T-shaped head downwardly fitted in a groove of the lower rail. A vertical wall portion rises upward from the head, has a latch member attached to the upper rail, engaged with and disengaged from a locking portion connected to the lower rail, and operated by an operating lever; In conjunction with the walk-in movement that moves the seat backrest forward,
When the walk-in lever swings to the operating position, the memory lever restrains the walk-in lever to the operating position,
When disabling the latch member and returning the seat to the state before the walk-in operation, the memory lever rides on the memory plate, the memory lever is displaced, and the walk-in lever is released. A walk-in lever swings from an operating position to a non-operating position, and a walk-in mechanism configured to be able to engage the latch member, so that the memory plate is externally fitted to the horizontal flange of the lower rail from above. A base portion having an inverted groove-shaped cross section is formed of an elastic material, one of both side flanges of the base portion is extended along a side wall of the lower rail, and an engagement claw is formed at a lower end of the extended flange. A catching claw is formed on the other of the two side flanges of the base portion, and the engaging claw is resiliently engaged with a locking portion of the lower rail so that the memory plate cannot be pulled out. A seat slide device resiliently engaged, and wherein the locking claw is resiliently locked to an inner edge of a horizontal flange of the lower rail.