JPH03281132A - Automatic assembly device of sheet slide for car - Google Patents

Abstract

PURPOSE:To easily assemble a lower rail and an upper rail, by moving the upper rail to lower rail, feeding in order balls to a ball built-in part and also building in the balls into the both rails after detecting the existence of the ball. CONSTITUTION:When a slide unit 1a placed on a transfer belt 50 reaches the lower part of a clamp mechanism 28, an upper rail 3 is held by a clamp 26a and lifted to a ball feeding height position. The ball feeding part is exposed by moving a base 21 to either one part of the right or left and the balls 4 of one piece each of the right and left are fed from a hopper via a tube 32. This state is confirmed with its detection by a sensor, etc., and the balls are fed again in the case of the ball 4 being not existed with its falling, etc. The base 21 is then moved reversely to expose the opposite side end of the lower rail, the ball 4 is similarly fed and returned to the center position where both rails 2, 3 are superposed after interposing the balls of the right and left two each at the front and back of the rail 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic assembly device for a vehicle seat slide that supports a seat body in a vehicle seat so that it can be moved and adjusted in the longitudinal direction, and in particular, the present invention relates to an automatic assembly device for a vehicle seat slide that supports a seat body in a vehicle seat so that it can be moved and adjusted in the longitudinal direction. This invention relates to an automatic ball feeding device that is interposed and serves as a bearing means.

[Conventional technology]

In general, a vehicle seat is equipped with a seat body consisting of a seat cushion and a seat cushion, etc., which is installed upright behind the seat cushion and can be rotated freely, and the seat cushion that constitutes the seat body is placed on the floor surface of the vehicle body. By supporting it with a front-rear sliding mechanism, it is possible to adjust the sliding movement in the front-rear direction of the vehicle body, allowing it to accommodate the body shape and preferences of the occupant. The longitudinal sliding mechanism of such a seat consists of a lower rail fixed to the floor of the vehicle body and an upper rail fixed to the seat body, and a ball bearing means is interposed between these rails. A vehicle seat slide unit is used.

[Problem to be solved by the invention]

By the way, according to this type of vehicle seat slide, when assembling the lower rail and the upper rail, each of which is formed by bending a metal plate into a roughly U-shape, so as to be able to slide freely in the longitudinal direction, there is a conventional method. This method requires the laborious and complicated work of manually assembling and holding the balls one by one in the ball mounting position formed between both rails. In particular, when assembling the slide unit mentioned above, it is necessary to securely install the balls that serve as bearing means in the appropriate position to prevent abnormal noise during sliding operation and malfunction due to sliding resistance. Furthermore, not only confirmation and inspection work is required, but also work is required to separate good products from defective products, which poses problems in terms of workability, number of work steps, etc., and increases costs. Ta.

Recently, there has been a great demand for automatic assembly of various mechanical parts, and this is also true for the vehicle seat slides mentioned above. Taking these points into consideration, it is necessary to take some measures that can solve the problems mentioned above. is required.

[Means to solve the problem]

In order to meet such demands, the automatic assembly device for a vehicle seat slide according to the present invention is provided with a slide unit that can be raised and lowered by a lower rail and an upper rail that are assembled in advance and set in a predetermined position. and upper rail moving means for gripping both longitudinal ends of the upper rail and moving the upper rail relative to the lower rail in the longitudinal direction; a ball supply means for supplying balls to the
This configuration includes a detection means for detecting the presence or absence of a ball on the lower rail.

Means for forming a catch 1L portion on at least one of the upper rail and the lower rail to restrict the movement of the ball in the longitudinal direction of the rail.

[Effect]

According to the present invention, the upper rail of the slide rail set at a predetermined location is gripped by the movable means and moved relative to the lower rail, and the balls are sequentially delivered to the ball-incorporated portion exposed to the outside by the ball supply means. While supplying the ball, the presence of the ball may be detected and confirmed, and then the ball may be incorporated into both rails, and in this state, a locking portion may be formed at a predetermined location of the rail.
This can reliably prevent problems such as balls falling off due to the relative sliding movement of both rails.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

1 to 6 show an embodiment of an automatic assembly device for a vehicle seat slide according to the present invention. In these figures, first, the vehicle seat slide 1 is illustrated using FIGS. To briefly explain the general structure, 2 is a lower rail fixed to the floor surface of the vehicle interior (not shown) by legs 2a, 2b, etc., and 3 is a lower rail that is guided in combination with the lower rail 2 so as to be slidable in the longitudinal direction. In the supported upper rail, a pair of left and right balls 4.4 are interposed between the two rails at the front and rear in the longitudinal direction of the rail. It is well known that the seat body, which is composed of a seat cushion, a seat back, etc. (whose parts are not shown), is supported so as to be slidable in the longitudinal direction of the seat on the floor surface of the vehicle interior.

Now, according to the present invention, the ball automatic supply device in the automatic assembly device 10 for the vehicle seat slide 4 is approximately
It is characterized by its configuration as shown in Figures 3 to 3. That is, this automatic ball feeding device is provided on the slide unit la so as to be movable up and down by simply combining the lower rail 2 and the upper rail 3 to form the slide unit 1a, and setting this at a predetermined position. Upper rail moving means 11 grips both longitudinal ends of the upper rail 3 and moves it longitudinally relative to the lower rail 2, and the moving means 11 moves the upper rail 3 by a predetermined amount to one side with respect to the lower rail 2. The present invention is characterized by a structure comprising a ball supply means 12 that supplies the balls 4 to a predetermined installation position on the lower rail 2, and a detection means 13 that detects the presence or absence of the balls 4 on the lower rail 2. have. Further, on the wood flow side, the ball 4 is placed on at least one of the upper rail 3 and the lower rail 2 (for example, the upper rail 3) in a state where both the rails 2 and 3 are combined according to the detection result by the detection means 13 described above.

Here, the upper rail movable means 11 is attached to a movable base 21 that is movable in the left and right directions while standing on a device mount 20 consisting of a base 20a and left and right columns 20b and 20c. A clamp base vertical movement cylinder 23 that can move the lifting bracket 22 up and down, a base left and right movement cylinder 25 that moves the movable base 21 in the left and right direction via a slide mechanism 24, and a clamp base attached to the lifting bracket 22. 26, the left and right pair of clamps 26a, 26a are connected to the clamp cylinder 2.
The clamp mechanism 28 is configured to be able to be driven by a clamp mechanism 7.

Note that 29 is a rail set cylinder for lifting the clamp mechanism 28 so as to provide a ball supply gap between both rails when the upper rail 3 is clamped.

The ball supply means 12 also includes a hopper 30 in which a large number of balls 4 are stored, a ball supply cylinder 31 that opens and closes duct portions 30a and 30a from the hopper 30 to supply the balls 4 one by one, and the left, Right clamp 26a
, two flexible tubes 3 each reaching the 26a part.
2.32 etc. Here, a configuration is shown in which two balls 4.4 on the left and two on the right are simultaneously supplied to the left and right portions of the lower rail 2.

Although detailed illustrations are omitted, for example, a press cylinder or the like is provided on the back side of the base 21, and 13a and 1 in FIG.
After detecting that the ball 4 is inserted by the detection means 13 such as a load cell or other sensor shown in 3a, the ball 4 is conveyed to the back side and held at a predetermined position, so that it is formed with a punching protrusion or the like. It is something that In addition, the 6th
In the figure, 16.16 is a locking part for regulating the ball 4 formed in advance in the center part of the upper rail 3, 17.18
．． Balls 4 17 and 18 are formed in advance at predetermined intervals on both ends in the longitudinal direction on the lower rail 2 side.
This is a locking part that constitutes the built-in part. According to such locking portions 14, 16, 17, 18, etc., even if a positional shift occurs between both rails 2.3 on the slide rail 1 due to sliding movement, the ball 4 will not fall off to the outside. Such problems do not occur, and its effects are obvious. Furthermore, in FIGS. 2 and 3, 40
is a weight having a weight of about 20 kg that provides the weight for inspecting the slide rail (la) with a ball 4 interposed therein, and by applying such weight, the upper rail 3 etc. are made to slide, and the load cells 13a, 13a are By detecting the force during movement, etc., it is preferable to determine whether or not assembly has been performed correctly and a good product has been completed.

According to such a configuration, the ball 4 can be assembled into the slide unit la in the following manner. That is, when an operator places the slide unit (la) assembled in advance on the conveyor belt as shown by 50 in FIG. 1, and this reaches below the clamp mechanism 28,
The vertical movement cylinder 23 is pushed down, and the upper rail 3, which overlaps the lower rail 2 without the balls 4, is moved by the clamp cylinder 27, and the clamps 26a and 2 are moved.
6a and lift it to a predetermined ball supply height position using the rail set cylinder 29. Next, the left and right moving cylinders 25 are operated to move the base 21 to either the left or right to expose the ball supply portion formed on the end side on the lower rail 2, and in this state, the tube 32. The left and right balls 4, 4 are supplied from the hopper 30 by 32. Then, this state is detected and confirmed by a sensor (not shown), and if the ball 4 has fallen or is not present, it is supplied again.

In addition, the base 21 is moved in the opposite direction to expose the opposite end of the lower rail 2, and the balls 4, 4 are supplied in the same manner as described above, whereby two balls 4, 4 on the left and two on the right are
It is preferable to insert it in front and behind the rail 1, and then return it to the central position where the circular rails 2 and 3 overlap. At this time, it is preferable to move both rails 2.3 back and forth a plurality of times so that the ball 4 can be stored in a predetermined position.

In this state, the balls 4, 4 installed in both rails 2, 3 are to be prevented from falling off, so that even if they slide relative to each other, problems such as balls 4 falling off, etc. will not occur. That's a good thing.

According to such a configuration, although the configuration is simple, the work of assembling the ball 4 in the seat slide 1 is automated, eliminating the troublesome and cumbersome work that was conventionally done manually, and eliminating the work that often occurs during this work. This eliminates problems such as out-of-stock balls 4, significantly shortens working time, saves manpower, and further reduces manufacturing costs.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part of the vehicle seat slide 1 and its automatic assembly device 10 may be modified and changed as necessary. 13 and various other configurations of the means 15 forming the locking portion 14 may be considered.

〔Effect of the invention〕

As explained above, according to the automatic assembly device for a vehicle seat slide according to the present invention, two slide units are constructed by assembling the upper rail with ball bearings interposed in the lower rail. an upper rail movable means which is configured by combining the above in advance and is movable up and down on a slide unit set at a predetermined position, and which grips both longitudinal ends of the upper rail and moves it longitudinally relative to the lower rail; ,
A ball supply means for supplying the ball onto the lower rail while the upper rail is moved a predetermined amount to one side with respect to the lower rail by the movable means, and a detection means for detecting the presence or absence of the ball on the lower rail. Despite its simple configuration, this configuration automates the work of assembling the balls in the seat slide, eliminating the troublesome and complicated work that was previously done manually, and also solving problems such as ball shortages that often occurred during this work. Wipe out.

In addition, there are various excellent effects such as significantly shortening the working time, saving manpower, and further reducing manufacturing costs.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of an automatic assembly device for a vehicle seat slide according to the present invention, FIGS. 2 and 3 are a front view and a side view of the main parts thereof, and FIG. 4 is a vehicle seat A schematic perspective view of the slide, Fig. 5 is a sectional view of the main part thereof, Fig. 6 is a schematic perspective view of the slide.
The figure is a schematic diagram for explaining the IF section that defines the position where the ball is installed in the lower rail and the upper rail. In the figure, 1... Vehicle seat slide, la... Slide unit, 2... Lower rail, 3... Upper rail, 10... Automatic assembly device, 11... Upper rail moving means, 12 ...Ball supply means, 13.
...detection means, 14...locking part, 15...locking part forming means, 20...device mount, 28...clamp mechanism, 50...conveyor belt. L

Claims (1)

[Claims] In a vehicle seat slide consisting of a lower rail and an upper rail that is slidably supported in the longitudinal direction with a ball interposed in the lower rail, the lower rail and upper rail are assembled in advance and set in a predetermined position on a slide unit. an upper rail movable means that is movable up and down and that grips both longitudinal ends of the upper rail and moves it longitudinally relative to the lower rail; and the movable means moves the upper rail a predetermined amount to one side with respect to the lower rail. An automatic assembly device for a vehicle seat slide, comprising: a ball supply means for supplying the ball to a predetermined location on the lower rail in a state in which the ball is in the lower rail; and a detection means for detecting the presence or absence of the ball on the lower rail. .