JP2795129B2 - Vehicle seat positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat positioning device.

[0002]

2. Description of the Related Art A seat for a vehicle comprises a seat cushion and a seat back, and a reclining device for adjusting the angle between the two and a seat slide for adjusting the front and rear position of the seat relative to the vehicle body are attached to the lower surface of the seat cushion. Is configured as

A seat slide generally comprises a pair of upper and lower slide rails, and an upper rail is fixed to a seat, while a lower rail is fixed to a vehicle body via a bracket. Therefore, the seat carried into the cabin of the vehicle
The mounting hole of the bracket fixed to the lower rail of the seat slide is inserted into a stud bolt previously fixed to the vehicle body, and then the nut is rotated by a nut runner or the like, whereby the bracket is fixed to the vehicle body.

In recent years, a series of operations of carrying a seat into a vehicle compartment and fixing the seat to a vehicle body have been automatically performed using a robot. Therefore, the sheet conveyed by the pallet to be handled by the robot is pre-positioned on the pallet by the positioning pin.

[0005]

However, according to the above-described positioning method, a large number of pallets having positioning pins must be procured in accordance with the type of vehicle, so that procurement costs and maintenance costs increase. there were. Another disadvantage is that an operator for positioning the sheet on the pallet is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seat positioning device which can save labor and reduce costs.

[0007]

In order to achieve the above object, the present invention comprises a first to a fourth positioning mechanism corresponding to the four corners of the seat cushion, and the first positioning mechanism is provided on the left and right sides of the seat cushion. A first stopper that regulates the front end position of one of the lower rails and a first clamper that self-aligns and clamps the front part of the lower rail are provided on a fixed base, and the second positioning mechanism presses the rear part of the one lower rail. The first pusher is provided to be movable back and forth on the lift table, and the third positioning mechanism is capable of moving the second pusher pressing the rear portion of the left or right lower rail of the seat cushion back and forth on the lift table capable of moving in the horizontal direction. And the fourth
The positioning mechanism is characterized in that a second stopper for regulating the front end position of the other lower rail and a second clamper for automatically aligning and clamping the front portion of the lower rail are provided on a vertically movable platform that can move in the left-right direction.

[0008]

According to the above construction, various sheets having different shapes and dimensions are automatically positioned in the vertical and horizontal directions and the front and rear directions based on one point.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1 in which the present invention is applied to a vehicle front seat mounting facility, on both sides of a transport line 2 of a vehicle 1, a robot 4 for carrying in and mounting a seat 3 into a room of the vehicle 1 is disposed. A sheet positioning device 5 according to the present invention is disposed near these two robots 4.

The sheets 3 are placed in a row on a single pallet 6 on both the R and L sides, and are conveyed by a sheet pallet conveyor 7 such as a shuttle conveyor to the vicinity of the sheet positioning device 5 on the L side.

From here, the R-side sheet 3 is transported to a position directly above the R-side sheet positioning device 5 by a vertical traveling type sheet transfer machine 8 and then suspended on the device 5. On the other hand, the L-side sheet 3 is transferred from the sheet pallet transporter 7 to the L-side sheet positioning device 5 by the L-side robot 4.

Therefore, the hand 9 of the R-side robot 4 has a single handling function of carrying the sheet 3 positioned by the R-side sheet positioning device 5 into the room of the vehicle 1, while the hand 9 of the L-side robot 4 Reference numeral 9 has another handling function of transferring the sheet 3 from the sheet pallet transporter 7 to the sheet positioning device 5 on the L side in addition to the same handling function as described above.

In FIG. 1, reference numerals 10a and 10b denote R and L side robot controllers, and 11a and 11b denote R and L side robot controllers.
It is a process board on the L side.

The sheet positioning device 5 has a common structure of the R and L sides, and will be described in detail below. As shown in FIGS. 2 to 4, first, the sheet positioning device 5
A second gantry 22 is provided on a first gantry 21 fixedly mounted on the gantry so as to be movable in the left-right direction (with respect to the traveling direction of the vehicle), and the first to fourth positioning mechanisms 23A to 23 are provided on the second gantry 22.
D is provided.

As shown in FIG. 5, the first positioning mechanism 23A is mounted on the second frame 22 via
A first stopper 26A against which the front end of the lower rail of the L-side seat slide (not shown) abuts is fixed on the fixed base 25, and a first stopper 26 which can hold the front end of the lower rail from the left and right. Rail clamper 27
A is assembled.

The second positioning mechanism 23B includes a second mount 22
An elevating platform 29a is provided on the upper side via a lifter 28a so as to be vertically movable, and a first pusher 30A that presses the rear end of the lower rail of the L-side seat slide onto the elevating platform 29a.
Are movably assembled in the front-rear direction (with respect to the traveling direction of the vehicle) by a driving device including an air cylinder 31a and a linear guide 32a.

The third positioning mechanism 23C and the fourth positioning mechanism 23D are not provided directly on the second mount 22, but are mounted on the mount by a motor 33, a belt transmission device 34, a ball screw 35 and a pair of front and rear linear guides. The slider 37 is provided on a slider 37 which can be moved in the left-right direction by a drive device such as 36.

That is, in the third positioning mechanism 23C, a lifting platform 29b is provided on the slider 37 via a lifter 28b so as to be vertically movable, and presses the rear end of the lower rail of the R-side sheet slide onto the lifting platform 29b. 2nd pusher 30B
Are mounted so as to be movable in the front-rear direction by a driving device including an air cylinder 31b and a linear guide 32b.

In the fourth positioning mechanism 23D, an elevating platform 29c is provided on a slider 37 via a lifter 28c so as to be vertically movable, and the front end of the lower rail of the R-side seat slide is abutted on the elevating platform 29c. A second stopper 26B and a second rail clamper 27B capable of holding the front end of the lower rail in the left-right direction are provided movably in the front-rear direction.

The fourth positioning mechanism 23D will be described in further detail. As shown in FIGS. 6 to 8, the movable platform 40 includes a motor 41, a belt transmission 42,
A driving device including a ball screw 43 and a linear guide 44 is provided so as to be movable in the front-rear direction. The second stopper 26B is fixed on the movable table 40 and the second rail clamper 27B is assembled.

In FIGS. 2 and 3, reference numeral 38 denotes a flexible duct in which electric wiring and pneumatic pipes connecting the second frame 22 and each part of the slider 37 are accommodated, and 39 in FIG.
This is a flexible duct in which electric wiring and the like connecting the components 7 and the components of the elevating platform 29c are housed. 2 and 4, reference numeral 45 denotes a rotary encoder provided on the tension pulley of the belt transmission 34 to detect the moving distance of the slider 37.
Reference numeral 46 in FIGS. 2 to 4 denotes a rotary encoder which is provided on the tension pulley of the belt transmission 42 and detects the moving distance of the movable base 40.

The second stopper 26B has a cross section L
The front end of the lower rail of the aforementioned R-side seat slide abuts and a screw 5 is attached to the stepped portion of the movable base 40.
The vertical plate portion 46a, on which the vertical plate portion 51a to be joined and the front end of the lower rail are placed, and the pair of left and right grip pads 52 of the second rail clamper 27B are in sliding contact.
A wider horizontal plate portion 51b.

Further, the second rail clamper 27B
Two racks 54a, 54b meshing with a pinion 53 provided in the movable base 40 are installed between a pair of left and right grip plates 55a, 55b with opposite ends slidably penetrating therethrough, and a grip is provided. Plate 55a, 55
The above-mentioned grip pads 52 are fixedly mounted on one end side of b. Then, one grip plate 55b
The end of the piston rod 57 of the air cylinder 56, which is mounted laterally on the outer surface of the air cylinder, penetrates the plate slidably and is then connected to the other grip plate 55a.

Therefore, when the air cylinder 56 is contracted from the state shown in FIG.
The racks 54a, 54b and the pinion 53 approach the same distance from the initial position by the racks 54a, 54b, so that the lower rail of the R-side seat slide held by the grip pad 52 is aligned with the movable table 40. become.

In FIG. 7, 58a, 58b and 59a,
Reference numeral 59b denotes a pair of proximity switches and a dog for finding the origin of the front and rear positions of the movable base 40.

On the other hand, as shown in FIGS. 9 to 11, the first stopper 26A and the first rail clamper 27A
The first stopper 26A is formed in an L-shaped cross section, and the vertical plate portion 66 to which the front end of the lower rail of the above-mentioned L-side seat slide abuts and which is screwed to the stepped portion of the fixed base 25 is connected.
a, and a horizontal plate portion 66b wider than the vertical plate portion 66a, on which the front end of the lower rail is placed and the pair of left and right grip pads 67 of the first rail clamper 27A are in sliding contact.

In the first rail clamper 27A, two racks 69a and 69b meshing with a pinion 68 provided in the fixed base 25 are provided at opposite ends between a pair of left and right grip plates 70a and 70b. It is movably penetrated and installed, and has grip plates 70a, 70b.
Each of the grip pads 67 described above is fixedly provided at one end side. Further, the tip of a piston rod 72 of an air cylinder 71 attached laterally to the outer surface of one grip plate 70a penetrates the plate slidably, and is then connected to the other grip plate 70b.

Therefore, the essential functions of the first stopper 26A and the first rail clamper 27A are essentially the same as the functions of the second stopper 26B and the second rail clamp 27B described above. That is, the lower rail of the L-side seat slide is regulated at the front end, and the left and right positioning is performed.

The third and fourth positioning mechanisms 23C,
The configuration of two lifters 28b and 28c of 23D is shown in FIG.
As shown in FIG. 14, a pair of front and rear guide shafts 80 suspended from the elevating table 29b (29c)
A support block 81 fixed to the lower surface of the shaft is vertically slidably penetrated, and the ends of both shafts are connected by a plate.

The plate 82 between the shafts
The female screw portion 83a of the ball screw 83 is fixedly mounted on the female screw portion 83a. The upper end portion of the male screw portion 83b screwed to the female screw portion 83a is supported by the support block 81 so as to be rotatable and vertically movable. .

Further, an upper end of the male screw portion 83b and an output shaft 85a of a motor 85 mounted upward to a bracket 84 connected to the slider 37 are connected by a belt transmission device 86.

13 and 14, reference numeral 87 denotes a rotary encoder provided on the tension pulley of the belt transmission 86, and 88a, 88b and 89 in FIGS.
Reference numerals a and 89b denote a pair of proximity switches and dogs for finding the origin at the upper and lower positions of the lifting platform 29b (29c).

Accordingly, the ball screw 83 is driven by the motor 85.
When the male screw portion 83b is rotated forward and backward, the lifting platform 29b (29c) is guided by the guide shaft 80 and moves up and down by a predetermined stroke with respect to the slider 37.

On the other hand, the lifter 2 of the second positioning mechanism 23B
8a are lifters 28b and 28c of the third and fourth positioning mechanisms 23C and 23D except that the support block 81 described above is fixed to the second frame 22 via a support plate 90 (see FIGS. 3 and 5). Since the configuration is the same as that described above, the detailed description is omitted here.

Next, the operation of the sheet positioning device 5 configured as described above will be described. First, before the sheet 3 is transferred to the present apparatus 5 by the L-side robot 4 or the sheet transfer machine 8, first to first,
The positions of the fourth positioning mechanisms 23A to 23D are set.

That is, in the first positioning mechanism 23A, the first rail clamper 27A is opened to the maximum by the extension of the air cylinder 71. In the second positioning mechanism 23B, the first pusher 30A is retracted to the maximum by the contraction of the air cylinder 31a, and the elevator 29a is
8a, the first positioning mechanism 23A is positioned at a predetermined vertical position with respect to the fixed base 25.

Third and fourth positioning mechanisms 23C, 23D
In this case, first, the slider 37 is positioned by the driving device such as the motor 33 at a predetermined left and right position with respect to the fixed base 25 of the first positioning mechanism 23A. Then, in the third positioning mechanism 23C, the second pusher 30B is retracted to the maximum by the contraction of the air cylinder 31b,
The lift 29b is moved by the lifter 28b to the first positioning mechanism 2
It is positioned at a predetermined vertical position with reference to the 3A fixed base 25.

In the fourth positioning mechanism 23D,
The lift 29c is moved by the lifter 28c to the first positioning mechanism 2
The movable table 40 is positioned at a predetermined vertical position with respect to the fixed table 25 of the first positioning mechanism 23A by a driving device such as a motor 41 while being positioned at a predetermined vertical position with respect to the fixed table 25 of 3A. . In addition, the second rail clamper 27B is maximally opened by the extension of the air cylinder 56.

After such position setting, the first device 5
To transfer the sheet 3 forward onto the fourth positioning mechanisms 23A to 23D.

Then, the rear end of the lower rail of the R, L side seat slide (not shown), which is mounted on the lower surface of the seat cushion of the seat 3 and is in an unstable state, is connected to the air cylinder 31.
a, 31b, the first and second pushers 30A, 30A
When B is pushed by advancing, the front end of the lower rail comes into contact with the first and second stoppers 26A and 26B before the front end is regulated, and the front and rear positions of the two lower rails are automatically positioned.

Thereafter, when the first and second rail clampers 27A and 27B are closed by the contraction of the air cylinders 56 and 71, the front ends of the lower rails become a pair of left and right grip pads 5A.
2, the center of the two lower rails is automatically positioned.

In this manner, since the sheet 3 is positioned, the handling can be performed with high precision when the robot 3 subsequently handles the sheet 3 with the hand 9.

The hand 9 of the robot 4 includes a support arm for supporting the seat back of the seat 3, a support means for supporting the front end of the lower rail, and a fixing means for fixing the lower rail at a predetermined position in the passenger compartment. The specific configuration has already been disclosed in Japanese Patent Application Laid-Open No. 2-258486 by the present applicant, and will not be described here.

[0044]

As described above, according to the present invention, various sheets having different shapes and dimensions can be moved up and down with respect to one point.
Since the positioning is automatically performed in the left-right and front-rear directions, an effect is obtained that a low-cost sheet positioning device that does not require any manpower can be realized.

[Brief description of the drawings]

FIG. 1 is a plan view of a front seat mounting facility showing one embodiment of the present invention.

FIG. 2 is a side view of the sheet positioning device.

FIG. 3 is a plan view of the sheet positioning device.

FIG. 4 is a front view of the sheet positioning device.

FIG. 5 is a view taken along the line VV of FIG. 3;

FIG. 6 is a side sectional view of a fourth positioning mechanism.

FIG. 7 is a plan sectional view of the fourth positioning mechanism.

FIG. 8 is a front view of a fourth positioning mechanism.

FIG. 9 is a side sectional view of the first positioning mechanism.

FIG. 10 is a plan sectional view of the first positioning mechanism.

FIG. 11 is a front view of the first positioning mechanism.

FIG. 12 is a side sectional view of the lifter.

FIG. 13 is a plan sectional view of the lifter.

FIG. 14 is a front sectional view of the lifter.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 sheet 4 robot 5 sheet positioning device 21 first frame 22 second frame 23A to 23D first to fourth positioning mechanism 25 fixed table 26A, 26B first and second stoppers 27A and 27B first and second rail clampers 29a to 29c elevator 30A, 30B first and second pushers 37 slider

Claims (2)

(57) [Claims] A first stopper for regulating a front end position of one of left and right lower rails of the seat cushion; and a first stopper for regulating a front end position of one of right and left lower rails of the seat cushion. A first clamper for self-aligning and clamping the portion is provided on a fixed base, and a second positioning mechanism is provided with a first pusher for pressing a rear portion of the lower rail so as to be movable back and forth on the elevating base. The mechanism is provided with a second pusher for pressing the rear portion of the left or right lower rail of the seat cushion so as to be able to move back and forth on a vertically movable platform, and the fourth positioning mechanism is for regulating the front end position of the other lower rail. The two stoppers and a second clamper for automatically aligning and holding the front part of the lower rail are provided on a vertically movable platform. Vehicle seat positioning device. 2. The vehicle seat positioning device according to claim 1, wherein the second stopper and the second clamper are provided on a movable platform that can move back and forth on the lifting platform.