JP4090677B2 - Lock structure of seat slide device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock structure for a seat slide device having a guide rail rolled by extrusion of a specific material such as an aluminum material.
[0002]
[Prior art]
For example, a configuration in which a seat slide device is mounted on a multi-row rear seat such as a second seat and a third seat disposed behind the front seat to make the slide seat slidable in the front-rear direction is an RV vehicle such as a minivan or a 1BOX vehicle. Widely used in multi-purpose vehicles such as
[0003]
Here, in such a multi-purpose vehicle, since effective use of the space (rear space) in which the rear seat is disposed is required, a long rail having a long slide range is usually used as a seat slide device for the rear seat. Many types are used.
[0004]
However, the iron material generally known as the material of the seat slide device is heavy in specific gravity. Therefore, in the long rail type in which the guide rail is formed long, the weight of the entire seat slide device can be avoided. Absent. Therefore, a guide rail having a light specific gravity, for example, a guide rail that is rolled and formed by extrusion of an aluminum material, is employed in a long rail type seat slide device.
[0005]
[Problems to be solved by the invention]
Incidentally, such a long rail type seat slide device is also provided with a locking means for restricting the slide of the runner with respect to the guide rail, similarly to a normal seat slide device. A general locking means is a combination of a series of lock holes formed directly in the guide rail and a runner side latch arranged so as to be inserted and engageable with the lock holes. The slide of the runner relative to the guide rail can be regulated under the insertion and engagement of the latch into the lock hole.
[0006]
However, such a general configuration of the locking means is suitable when the material such as the guide rail is made of iron, and does not consider application to a guide rail that is rolled by extrusion of an aluminum material. Therefore, it is inevitable that the adaptability is inferior.
[0007]
In other words, in order to form a series of lock holes in a guide rail formed by rolling, post-processing after forming is separately required, so the number of work steps increases. The latch biased in the direction of insertion into the lock hole by the biasing force of the lock spring, that is, the lock-on direction is slidably contacted with the wall surface where the lock hole is formed under the biasing force. Since it is necessary to strengthen the rigidity of the corresponding part of the guide rail by means of rolling, etc., the guide rail made by rolling can be reduced in weight, but the manufacturing work including an increase in the number of work processes is complicated, and The accompanying increase in cost is inevitable.
[0008]
An object of the present invention is to provide a lock structure for a seat slide device that can be applied to an aluminum guide rail by enabling the manufacturing operation to be simplified and the cost to be reduced.
[0009]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, the runner extends through the upper surface opening of the guide rail and is slidable with respect to the guide rail under a partial installation via a predetermined slider. It is assembled to . A lock plate having a series of lock holes is formed separately from the guide rail, and the portion having the lock holes is separated upward from the lower wall of the guide rail and inserted in the rolling direction of the guide rail at a position below the runner. And is integrally fixed to the guide rail. In addition, a latch having a lock claw that can be inserted into and engaged with the lock hole of the lock plate is supported by the runner and disposed so as to be movable up and down along the runner .
[0010]
Then, under the insertion of the lock claw into the lock hole by the biasing force of the lock spring, the runner slide with respect to the guide rail can be regulated, and the biasing force of the lock spring by the predetermined unlocking means is resisted. Under the lifting of the latch, the runner's sliding restriction with respect to the guide rail can be released.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
As shown in FIGS. 1 and 2, in the seat slide device locking structure 10 according to the present invention, the guide rail 14 of the seat slide device 12 has a constant cross-sectional shape, for example, a hollow cross-sectional shape with an open top surface. The scale is rolled and formed by extruding a specific material having a low specific gravity, for example, an aluminum material. The lock structure 10 of the present invention is configured so that the slide of the runner 16 slidably assembled with the guide rail 14 can be regulated under the lock-on state.
[0013]
The runner 16 is formed into a shape having a hollow insertion portion 16a integrally at the lower end thereof, for example, by roll forming by extrusion of an aluminum material. Then, a substantially rod-shaped resin slider 20 having a fitting portion 20a is integrally attached to a linear support piece 18 projecting in the longitudinal direction on the side surface of the insertion portion 16a, and the concave guide 22 is attached. The runner 16 is assembled to the guide rail 14 so as to be slidable in the front-rear direction, that is, in the longitudinal direction thereof, by providing the insertion portion with the slider.
[0014]
Here, as can be seen from FIG. 1 and FIG. 2, in the present invention, a lock plate 26 having a series of lock holes 24 is formed separately from the guide rail 14 and below the runner insertion portion 16a. In position, it is inserted and secured to the guide rail.
[0015]
The guide rail 14 is rolled and formed by extrusion of an aluminum material, whereas the lock plate 26 is formed by pressing of an iron material, for example. Then, the lock plate 26 is integrally fixed to the guide rail under the fitting, caulking, etc. of the set pin 28 after being inserted along the rolling direction of the guide rail 14, that is, the longitudinal direction.
[0016]
The length of the lock plate 26 is usually the same as that of the guide rail 14, and the lock plate is provided over almost the entire length of the guide rail.
[0017]
In the present invention, the latch 30 having the lock claw 30a that can be inserted into and engaged with the lock hole 24 of the lock plate is disposed and supported with respect to the runner 16 so as to be movable up and down. The latch 30 is disposed so as to be movable up and down along the upper end vertical wall 16b under continuous insertion into the insertion holes 32 and 33 formed in the inner insertion portion 16a of the runner, and is a long hole-shaped guide hole. The upper end vertical wall is connected to the upper end vertical wall through a connecting pin 36 inserted through 34.
[0018]
The latch 30 is biased and held in the lock-on direction, that is, in the insertion direction of the lock claw 30a into the lock hole 24 under the biasing force of the lock spring 38.
[0019]
As shown in FIG. 1, in the embodiment of the present invention, a lever 40 having a free end 40a connected to a latch 30 via a connecting pin 36 is fixed to and protruded from an upper end vertical wall 30b of the runner. The fixed pin 42 is rotatably supported. Then, for example, by locking the end of the lock spring 38, which is a torsion spring wound around the extending end of the fixed pin 42, to the fixed pin itself and the lever 40, the biasing force in the lock-on direction is latched. Is assigned to 30.
[0020]
In such a configuration, the runner 16 with respect to the guide rail 14 under the insertion and engagement of the lock claw 30a into the lock hole 24 by the biasing force of the lock spring (torsion spring) 38, that is, when the latch 30 is locked on. The slide is regulated. Then, the sliding restriction of the runner 16 with respect to the guide rail 14 is released under the lifting of the latch 30 against the biasing force of the lock spring 38 by a predetermined unlocking means (not shown).
[0021]
As an example of the unlocking means in the embodiment of the present invention, a lever mechanism that can press the operation end 40b of the lever 40 shown in FIG. 1 downward can be exemplified. As the lever mechanism, a publicly known one provided in a conventional seat slide device formed by pressing from an iron material or the like can be simply used, and the structure of the unlocking means itself is not the gist of the present invention. Detailed description here is omitted.
[0022]
As described above, in the lock structure 10 of the seat slide device according to the present invention, the lock hole 24 into which the lock claw 30a of the latch is inserted and engaged is formed in the lock plate 26 separate from the guide rail 14. Yes. That is, since it is not necessary to form the lock hole 24 directly in the guide rail 14 itself, post-processing after the rolling of the guide rail becomes unnecessary.
[0023]
Since the latch claw 30a of the latch is merely slidably contacted with the lock plate 26 under the biasing force of the lock spring 38, the rigidity of the guide rail 14 formed by rolling from aluminum is enhanced. Therefore, processing such as hard anodizing for the purpose is not required.
[0024]
Thus, according to the present invention, post-processing for the guide rail 14 such as processing for the purpose of forming the lock hole 24 and strengthening rigidity can be eliminated, so that the guide rail manufacturing process is reliably simplified. At the same time, the manufacturing cost is surely reduced. That is, since the lock structure 10 can be realized without complicating the manufacturing process and increasing the cost, the application to the guide rail 14 made of aluminum can be reliably performed.
[0025]
Needless to say, if the guide rail 14 is made of aluminum having a low specific gravity, the weight can be surely reduced even if it is a long rail.
[0026]
Here, in the embodiment of the present invention, an aluminum material is illustrated as a material for the guide rail 14 and the runner 16. However, since the material having a relatively low specific gravity and a material that can be extruded are sufficient, the guide rail 14 and the runner 16 may be formed from, for example, a stainless material, without being limited to an aluminum material.
[0027]
Here, the runner 16 is formed of an aluminum material in the same manner as the guide rail 14. However, the runner 16 is not limited to an aluminum material, and may be formed from an iron material, for example.
[0028]
Further, the lock structure of the seat slide device according to the present invention is effective for application to a seat slide device for a rear seat as a long rail, but is not limited thereto. That is, it goes without saying that the present invention may be applied to a seat slide device for a front seat.
[0029]
The present invention may be applied to a seat slide device mounted on a seat such as a train, an airplane, a ship, etc., without being limited to a seat such as an automobile.
[0030]
The above-described embodiments are for explaining the present invention, and do not limit the present invention. All modifications, alterations, and the like within the technical scope of the present invention are included in the present invention. It goes without saying that it is done.
[0031]
【The invention's effect】
As described above, according to the lock structure of the seat slide device according to the present invention, the post-processing for the guide rail such as the processing for the purpose of forming the lock hole and strengthening the rigidity can be eliminated. Is surely simplified, and the manufacturing cost thereof is also surely reduced.
[0032]
Therefore, the lock structure can be realized without complicating the manufacturing process and increasing the cost, and can be surely applied to an aluminum guide rail.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a part of a seat slide device, showing a lock structure of the seat slide device according to the present invention.
FIG. 2 is a schematic longitudinal sectional view of the seat slide device when the latch is locked on.
[Explanation of symbols]
10 Seat slide device lock structure
12 Seat slide device
14 Guide rail
16 Lanna
24 Lock hole
26 Lock plate
30 Latch
30a lock claw
38 Lock spring

Claims (2)

It is a sheet slide device having at least a hollow cross-sectional guide rail that is rolled and formed by extrusion of a specific material and has an opening on the upper surface
The runner extends through the upper surface opening of the guide rail and is slidably assembled to the guide rail under a partial internal configuration via a predetermined slider.
A lock plate having a series of lock holes is formed separately from the guide rail, and the portion having the lock holes is separated upward from the lower wall of the guide rail and inserted in the rolling direction of the guide rail at the lower position of the runner. Fixed integrally to the guide rail,
A latch having a lock claw that can be inserted into and engaged with the lock hole of the lock plate is supported by the runner and is disposed so as to be movable up and down along the runner.
Under the insertion of the lock pawl into the lock hole due to the biasing force of the lock spring, it is possible to regulate the slide of the runner with respect to the guide rail, and the latch that resists the biasing force of the lock spring by a predetermined unlocking means. A lock structure of the seat slide device that can release the runner's slide restriction with respect to the guide rail under the lifting. 2. A lock structure for a seat slide device according to claim 1 , wherein a lock plate is formed in a cross-sectional shape having a central portion projecting upward, and a series of lock holes are provided in the central portion projecting upward .

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