JPH0639559U - Vehicle seat slide device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the lock strength without increasing the size and weight of the device. [Structure] A lower rail 1, an upper rail 3 assembled so as to be movable relative to the lower rail 1, and a large number of first and second engagement holes 19 and 20 provided along both side walls 9 of the lower rail 1. The first and second engaging holes 19 and 20 are supported in the lower rail 1 and on the upper rail side.
First and second latches 29 and 30 which can be switched between a meshing position in which they can be engaged and disengaged with respect to each other and a standby position retracted from the first and second engagement holes 19 and 20, and first and second latches. Positioning means 51 for always positioning the latches 29, 30 in the standby position and the operating lever 53 provided on the upper rail 3 side are switched between the neutral position and the operating position.
When the neutral position is switched to the operating position, the first and second latches 29 and 30 are pushed out to the meshing position, and the latch pressing body 47 is constrained to the meshing position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a vehicle seat slide device.

[0002]

[Prior art]

 In general, seats of automobiles can be secured with an optimal seat position according to the height of an occupant by a seat slide device.

The outline of the seat slide device is that the lower rail fixed to the vehicle body side is provided with engaging holes at equal intervals along the longitudinal direction, and the upper rail fixed to the seat side is detachable from the engaging hole. There is an engagement latch that engages with each other.

The lower rail and the upper rail are slidably attached to the front and rear and are engaged with each other. The latch is attached to an operation lever shaft pivotally attached to the upper rail side, and is always engaged by an urging spring interposed in the operation lever shaft. The structure is biased toward the hole side.

[0005]

[Problems to be solved by the device]

 As described above, the engagement of the engagement hole and the engagement latch secures the locked state of the seat, but in recent years, the demand for safety of automobiles has been increasing, and the seat slide device has been Are required to improve the lock strength.

Therefore, as a countermeasure against this, the lower rail having the engaging hole or the plate thickness of the engaging latch is increased, but it is not preferable because it goes against weight reduction. It was

Therefore, an object of the present invention is to provide a vehicle seat slide device, which is capable of improving the lock strength without increasing the size of the device and is very preferable in terms of weight reduction.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is directed to a lower rail fixed to a vehicle body side, an upper rail fixed to a seat side and assembled relative to the lower rail so as to be movable relative to each other, and a longitudinal direction on both side walls of the lower rail. A large number of first and second engaging holes provided along and facing each other and a latch holder fixed inside the lower rail and on the upper rail side are supported with respect to the first and second engaging holes. The first and second latches that can be switched between a meshing position that engages and disengages freely and a standby position retracted from the first and second engaging holes, and the first and second latches are always in the standby position. The positioning means for positioning and the operating lever provided on the upper rail side, which is supported by the latch holder, switches between the neutral position and the operating position, and at the time of switching from the neutral position to the operating position, the first and second latches are provided. The meshing extruding the position and consists a latch pressing body to restrain its engagement position.

[0009]

[Action]

 According to such a seat slide device, by setting the latch pressing body to the neutral position by the operation lever, the first and second latches become the standby position retracted from the first and second engagement holes by the positioning means. Therefore, the position of the seat can be adjusted by sliding the upper rail with respect to the lower rail by a predetermined amount. After the position adjustment of the seat is completed, when the latch pressing body is switched from the neutral position to the operating position by the operation lever, the first and second latches are pressed to the meshing position and are restrained at the meshing position. At the time of this locking, the first and second latches engage with the first and second engaging holes at the same time without increasing the plate thickness, so that a strong locked state can be obtained. In addition, since the first and second latches are incorporated inside the rail, the device does not become large.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIGS.

In the figure, 1 is a lower rail attached to the vehicle body side, and 3 is an upper rail attached to the seat side.

The lower rail 1 has a long shape in the front-rear direction, and the rail body has side walls 9 and 9 rising vertically from both side edges of a horizontal portion 7 provided with mounting brackets 5, 5 in the front-rear direction and further toward the inner side. It has a box-shaped cross section in which the outer guide portions 11, 11 project horizontally. Inside the lower rail 1, there is arranged a roller-shaped rotating body 13 which is provided for guiding and whose axis is orthogonal to the longitudinal direction. Further, the tips of the outer guide portions 11 and 11 are bent downwardly in a short manner, and an opening 17 continuous between the bent portions 15 and 15 is formed in the longitudinal direction. Further, the left and right side walls 9 of the lower rail 1 are formed with a first engaging hole 19 and a second engaging hole 20 facing each other along the longitudinal direction at a predetermined interval. The first and second engagement holes 19 and 20 are in the form of vertically long rectangular window holes and are formed by press molding.

The upper rail 3 has a shape that is long in the front-rear direction, and the rail main body projects upward from the opening 17 by stacking and coupling the rail members together, and a generally vertical general portion 21 fixed to the seat side, It has a T-shape with a downward cross-section consisting of an outer guide portion 11 on the side of the lower rail 1 and inner guide portions 23 and 23 facing each other and protruding horizontally from the lower end of the general portion 21. . The inner guide portions 23, 23 are mounted on the roller-shaped rotating body 13, and both ends of the inner guide portions 23, 23 are bent upwards for a short time. The bent portions 25, 25 regulate the amount of movement of the spherical rotating bodies 27, 27 provided for guiding by the bent portions 15, 15 on the lower rail 1 side in the vehicle width direction (left and right in FIG. 7). It has a function as a stopper wall.

The spherical rotating body 27 and the roller-like rotating body 13 are provided at two front and rear positions and are rotatably held by a retainer (not shown).

In the lower rail 1, first and second latches 29 and 30 that engage with the first and second engaging holes 19 and 20 in a freely disengageable manner are supported by a latch holder 31 so as to be slidable in the horizontal direction. There is.

The latch holder 31 is supported so as to be slightly rotatable with respect to a base plate 33 welded to the bottom surface of the inner guide portion 23 of the upper rail 3.

That is, the base plate 33 is provided with supporting portions 37, 37 formed in an angled shape with an inward cross section facing each other on both sides of the plate body having an opening 35 at a substantially central portion.

On the other hand, the latch holder 31 has a flange portion 43, 43 supported at both ends by being inserted into the holder main body 41 having a through hole 39 that is vertically pulled out from one opening end of the support portion 37, 37. The stoppers 44 are provided and fixedly supported by stoppers 44 attached to both ends of the base plate 33. Circular arc-shaped bulges 45, 45 are provided at the substantially central edge of the flange 43, and the dimension a from the bulges 45 to the bulges 45 is determined from the inner wall surfaces of the support portions 37, 37 of the base plate 33. It is set to be almost the same as the dimension b to the inner wall surface. As a result, the latch holder 31 can be rotated by the protrusion amount α of the bulging portion 45 (in the direction of the arrow in FIG. 5).

The latch holder 31 is provided with a latch pressing body 47 in addition to the pair of left and right first and second latches 29 and 30 described above.

The first and second latches 29 and 30 have a plurality of engaging claw portions 29a and 30a formed in a comb-teeth shape that meshes with the first and second engaging holes 19 and 20 in a disengaged state. And an inclined working surface 49 is provided on the base side. The first and second latches 29 and 30 largely protrude from the latch holder 31, and the engaging positions where the engaging claws 29a and 30a engage with the first and second engaging holes 19 and 20 (FIG. 4I). It is possible to switch to the standby position (FIG. 2II) retracted from the first and second engagement holes 19 and 20, and is normally urged to the standby position II by the urging spring 51 serving as positioning means. There is.

The urging spring 51 has one end locked to the pins 29b and 30b of the first and second latches 29 and 30, and the other end locked to the latch holder 31 side.

The latch pressing body 47 is fitted and supported in the through hole 39 of the latch holder 31, and is vertically moved in the through hole 39 by the operation lever 53, so that the neutral position (solid line in FIG. 1) and the operating position (solid line in FIG. 3). ) And can be switched.

At the lower end of the latch pressing body 47, there are pressing surfaces 55, 55 having a mountain-shaped cross section. The pressing surface 55 is used when switching from the neutral position (solid line in FIG. 1) to the operating position (solid line in FIG. 2). By making contact with the working surfaces 49 of the latches 29 and 30, they function to push the first and second latches 29 and 30 to the meshing position I. Further, the both side surfaces 47a, 47a of the latch pressing body 47 are brought into contact with each other at the meshing position II by contacting the base ends of the first and second latches 29, 30 when the pushing surface 55 completes the pushing. It functions as a restriction surface for restraining the second latches 29, 30.

The latch pressing body 47 and the operation lever 53 are interlockingly connected by a strip plate 57 made of a spring. One end of the strip plate 57 is engaged with an engagement groove 59 provided on the upper surface of the latch pressing body 47. A curl portion 57a, which is the other end side of the strip plate 57, extends from the opening 35 of the base plate 33, and a guide groove 61 formed in the upper rail 3 and a window hole 63 are provided in a lever holder 65 described later. It passes through the guide groove 67 and is coupled to the mounting boss 69 of the operating lever 53 by a pin 70. Therefore, the strip 57 can be slid without buckling.

The attachment boss portion 69 provided on the operation lever 53 is separated from the axis of the operation lever 53 by a predetermined distance. The distance to the mounting boss 69 is set so that the latch pressing body 47 is moved from the neutral position (solid line in FIG. 1) to the operating position (solid line in FIG. 3) by pushing and pulling the strip 57 when the operation lever 53 rotates. It is the amount of operation to switch from the neutral position to the neutral position.

The operating lever 53 is rotatably supported by front and rear lever holders 65, 65 fixed to the general portion 21 of the upper rail 3. The operating lever 53 has an operating portion 71 on the front end side, and is constantly urged in the counterclockwise direction (arrow A direction) in FIG. 8 by an urging spring 73 provided on the rear end side. The biasing spring 73 functions to always position the latch pressing body 47 at the operating position (solid line in FIG. 3).

According to the seat slide device configured as described above, when the first and second latches 29 and 30 are in the standby position II as shown in FIG. That is, it is possible to slide the upper rail 3 back and forth. After the seat adjustment is completed, when the hand is released from the operation portion 71, the urging spring 73 rotates the operation lever 53, and the operation amount of the operation lever 53 moves the latch pressing body 47 to the neutral position via the strip 57 (see FIG. 1) to the operating position (solid line in Fig. 3). At this time, the first and second latches 29 and 30 are pushed out to the meshing position I by the latch pressing body 47. In this case, even if the engagement claws 29a and 30a and the first and second engagement holes 19 and 20 are out of synchronization as shown by the chain line in FIG. The latches 29 and 30 move slightly forward and move forward to engage with the first and second engaging holes 19 and 20 without difficulty and are restrained at the engaging position I by the latch pressing body 47 as shown in FIG. . Therefore, the first and second latches 29 and 30 can provide a strong meshing state without increasing the plate thickness, and the size of the device does not increase.

In this case, as shown in FIG. 9, by providing the lower end of the latch pressing body 47 with the engaging projection 75 that engages with the locking hole 1a of the lower rail 1 in a disengageable manner, The body 47 can be fixedly held, and higher strength and rigidity can be obtained.

[0029]

As described above, according to the vehicle seat slide device of the present invention, the lock strength can be improved without increasing the plate thickness by the first and second latches. Therefore, it is very preferable in terms of weight reduction. Also, since it is installed in the rail, it does not lead to an increase in size of the device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a seat slide device at the time of unlocking according to the present invention.

FIG. 2 is an explanatory diagram showing a standby state of a latch.

FIG. 3 is a sectional view of the seat slide device when locked according to the present invention.

FIG. 4 is an explanatory view showing a meshed state of a latch.

FIG. 5 is an exploded perspective view of a main part.

FIG. 6 is an explanatory view of attaching a strip plate to a mounting boss portion of an operation lever.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8 is a perspective view of the entire seat slide device.

FIG. 9 is a sectional view similar to FIG. 3, showing a modified example of the latch pressing body.

[Explanation of symbols]

 1 Lower Rail 3 Upper Rail 9 Both Side Walls 19 First Engagement Hole 20 Second Engagement Hole 29 First Latch 30 Second Latch 31 Latch Holder 47 Latch Pressing Body 51 Bias Spring (Positioning Means) 53 Operation Lever

Claims (1)

[Scope of utility model registration request] 1. A lower rail fixed to a vehicle body side, an upper rail fixed to a seat side and assembled relative to the lower rail so as to be movable relative to each other, and a plurality of facing rails provided on both side walls of the lower rail along a longitudinal direction. The first and second engaging holes, and a meshing position that is supported by the latch holder fixed to the upper rail side in the lower rail and that engages with the first and second engaging holes in a disengageable manner. First and second latches capable of switching to the standby position retracted from the first and second engagement holes, positioning means for always positioning the first and second latches at the standby position, and supported by the latch holder. , An operating lever provided on the upper rail side is used to switch between a neutral position and an operating position, and at the time of switching from the neutral position to the operating position, the first and second latches are pushed out to a meshing position, A vehicle seat slide device, comprising: a latch pressing body that is restrained at the meshing position of the vehicle.