JPH06321148A - Positioning device for vehicle seat - Google Patents

Abstract

PURPOSE:To automate the positioning in the front and rear direction, and the right and left direction of a seat by installing respective rail clampers for self- aligning the respective front ends of both side rails on L-side and R-side of the seat, and respective pushers for pressing the respective rear ends of the rails so that they can be moved back and forth, and right and left respectively. CONSTITUTION:A first positioning mechanism 32A installs a first stopper 26A for regulating the front end of an L-side lower rail of a seat, and a first rail clamper 27A for self-aligning the front end of the lower rail, on the fixing bedplate of a frame 22. A second positioning mechanism 23B installs a first pusher 30A for pressing the rear end of an L-side lower rail, on a lifting/ lowering board 29a so that it can be moved back and forth. Further, a third positioning mechanism 23C installs a second pusher 30B for pressing the rear end of an R-side lower rail so that it can be moved right and left, and back and forth. Next, a fourth positioning mechanism 23D installs a second stopper 26B for regulating the front end of the R-side lower rail, and a second rail clamper 27B for self-aligning the front end of the same lower rail so that they can be moved right and left, and back and forth.

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 vehicle seat comprises a seat cushion and a seat back. A reclining device for adjusting the angle between the seat cushion and a seat back and a seat slide for adjusting the front-rear position of the seat with respect to the vehicle body are attached to the lower surface of the seat cushion. Configured as.

A seat slide is generally composed of 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 in the passenger compartment of the vehicle is
It was fixed to the vehicle body by inserting the mounting hole of the bracket fixed to the lower rail of the seat slide into a stud bolt previously fixed to the vehicle body, and then rotating the nut with a nut runner or the like.

In recent years, a robot automatically performs a series of operations of bringing a seat into a vehicle compartment and fixing it to the vehicle body. Therefore, the sheet conveyed by the pallet to be handled by the robot is previously positioned on the pallet by the positioning pin.

[0005]

However, the positioning method as described above has a problem in that a large number of pallets having positioning pins must be procured according to the type of vehicle, resulting in high procurement costs and maintenance costs. there were. There is also a drawback that an operator is required to position the sheets on the pallet.

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

[0007]

To achieve the above object, the structure of the present invention is provided with first to fourth positioning mechanisms corresponding to the four corners of the seat cushion, and the first positioning mechanism is 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 automatically aligns and clamps the front portion of the lower rail are provided on the fixed base, and the second positioning mechanism presses the rear portion of the one lower rail. The first pusher is provided on the lift table so as to be movable back and forth, and the third positioning mechanism is capable of moving the second pusher, which presses the rear portion of the other lower rail of the seat cushion, back and forth on the lift table capable of moving in the left-right direction. Installed in the fourth
The positioning mechanism is characterized in that a second stopper that regulates the front end position of the other lower rail and a second clamper that automatically aligns and holds the front portion of the lower rail are provided on a lift table that can move in the left-right direction.

[0008]

According to the above construction, various sheets having different shapes and sizes are automatically positioned in the vertical / horizontal direction and the front / back direction based on one point.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 attachment facility, robots 4 for carrying in and attaching a seat 3 into a room of the vehicle 1 are arranged on both sides of a transportation line 2 of the vehicle 1. A sheet positioning device 5 according to the present invention is arranged near both of the 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 to the vicinity of the sheet positioning device 5 on the L side by a sheet pallet conveyor 7 such as a shuttle conveyor.

From here, the R-side sheet 3 is carried to a position just above the R-side sheet positioning device 5 by a vertical traveling type sheet transfer device 8 and then suspended on the device 5. On the other hand, the L-side sheet 3 is transferred from the sheet pallet conveyor 7 onto 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 bringing the seat 3 positioned by the R-side seat positioning device 5 into the room of the vehicle 1, while the hand of the L-side robot 4 is in hand. 9 has another handling function of transferring the sheet 3 from the sheet pallet conveyor 7 to the sheet positioning device 5 on the L side in addition to the handling function similar to that described above.

In FIG. 1, 10a and 10b are R and L side robot controllers, and 11a and 11b are R and L robot controllers.
This is the process board on the L side.

The sheet positioning device 5 has a common structure for the R and L sides, and will be described in detail below. As shown in FIGS. 2 to 4, first, the seat positioning device 5 is installed on the floor 20.
A second pedestal 22 is provided on the first pedestal 21 fixed to the first pedestal 21 so as to be movable in the left-right direction (with respect to the traveling direction of the vehicle). On the second pedestal 22, the first to fourth positioning mechanisms 23A to 23 are provided.
D is provided.

As shown in FIG. 5, the first positioning mechanism 23A has a fixed base 2 on a second base 22 via a support column 24.
5 is provided, and a first stopper 26A to which the lower rail front end of the L-side seat slide (not shown) is abutted is fixedly provided on this fixed base 25, and the first end capable of holding the front end portion of the lower rail from the left-right direction. Rail clamper 27
A is assembled.

The second positioning mechanism 23B includes a second mount 22.
A lift table 29a is provided above the lift table 28a so as to be vertically movable, and a first pusher 30A for pressing the rear end of the lower rail of the L-side seat slide on the lift table 29a.
Is assembled so as to be movable in the front-rear direction (with respect to the traveling direction of the vehicle) by a drive 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 on the mount, the motor 33, the belt transmission 34, the ball screw 35 and the pair of front and rear linear guides. It is provided on a slider 37 which can be moved in the left-right direction by a driving device composed of 36 and the like.

That is, in the third positioning mechanism 23C, an elevating table 29b is provided on the slider 37 via a lifter 28b so as to be vertically movable, and the rear end of the lower rail of the R-side seat slide is pressed on the elevating table 29b. Second pusher 30B
Is assembled so as to be movable in the front-rear direction by a driving device including an air cylinder 31b and a linear guide 32b.

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

The fourth positioning mechanism 23D will be described in further detail. As shown in FIGS. 6 to 8, a movable base 40 is provided on the lift table 29c, a motor 41, a belt transmission device 42, and a movable base 40.
It is provided so as to be movable in the front-rear direction by a driving device including a ball screw 43, a linear guide 44, and the like. The second stopper 26B is fixedly mounted on the movable base 40, and the second rail clamper 27B is assembled.

2 and 3, reference numeral 38 denotes a flexible duct in which electric wiring connecting the parts of the second frame 22 and the slider 37 and air piping and the like are accommodated, and 39 in FIG. 2 denotes the slider 3.
7 is a flexible duct that accommodates electrical wiring and the like that connects between 7 and each component of the lifting platform 29c. Reference numeral 45 in FIGS. 2 and 4 denotes a rotary encoder which is provided on the tension pulley of the belt transmission device 34 and detects the moving distance of the slider 37.
2 to 4, reference numeral 46 denotes a rotary encoder provided on the tension pulley of the belt transmission 42 to detect the moving distance of the movable table 40.

The second stopper 26B has a cross section L
The front end of the lower rail of the R-side seat slide comes into contact with the stepped portion of the movable base 40 and the screw 5 is formed in a character shape.
The vertical plate portion 46a on which the 0-coupled vertical plate portion 51a and the front end portion of the lower rail are placed, and the left and right grip pads 52 of the second rail clamper 27B are in sliding contact with each other.
And a wider horizontal plate portion 51b.

Further, the second rail clamper 27B is
Two racks 54a, 54b meshing with a pinion 53 provided in the movable table 40 are installed between a pair of left and right grip plates 55a, 55b so that their contradictory ends slidably penetrate and are mounted. Plates 55a, 55
The above-mentioned grip pads 52 are fixedly provided on one end side of b. And one grip plate 55b
The tip end of the piston rod 57 of the air cylinder 56 laterally attached to the outer surface of the first cylinder pierces the plate slidably and then is connected to the other grip plate 55a.

Therefore, when the air cylinder 56 is contracted from the state shown in FIG. 7, a pair of left and right grip plates 55 is provided.
The racks 54a, 54b and the pinion 53 bring the a and 55b closer to each other by the same distance from the initial position, whereby the lower rail of the R-side seat slide held by the grip pad 52 is aligned with the movable base 40. become.

In FIG. 7, 58a, 58b and 59a,
Reference numeral 59b is a pair of proximity switches and dogs for setting the origin at the front and rear positions of the movable table 40.

On the other hand, the first stopper 26A and the first rail clamper 27A are, as shown in FIGS.
The first stopper 26A has an L-shaped cross section, and the front end of the lower rail of the L-side seat slide comes into contact with the first stopper 26A, and the vertical plate portion 66 is screwed to the stepped portion of the fixed base 25 by a screw 65.
a and a horizontal plate portion 66b wider than the vertical plate portion 66a on which the front end portion 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, 69b meshing with the pinion 68 provided in the fixed base 25 are slidable at the opposite ends between the pair of left and right grip plates 70a, 70b. The grip plates 70a and 70b are movably pierced and installed.
The above-mentioned grip pads 67 are fixedly provided on one end side of each. Further, the tip of the piston rod 72 of the air cylinder 71 laterally attached to the outer surface of the one grip plate 70a is slidably passed through the plate and then connected to the other grip plate 70b.

Therefore, the original 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-right positioning is performed.

The above-mentioned third and fourth positioning mechanisms 23C,
The configuration of the two 23D lifters 28b and 28c is as shown in FIG.
As shown in FIG. 14, a pair of front and rear guide shafts 80 suspended from the lifting platform 29b (29c) are attached to the slider 37.
The support block 81 fixed to the lower surface of the shaft is vertically slidably passed through, and the ends of these shafts are connected by a plate 82.

The plate 82 between the shafts
A female screw portion 83a of a ball screw 83 is fixedly mounted on the base screw 83, and an upper end portion of a male screw portion 83b screwed to the female screw portion 83a is rotatably supported by the support block 81 so as not to move vertically. .

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

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

Therefore, the motor 85 drives the ball screw 83
By the normal rotation and the reverse rotation of the male screw portion 83b, the lift table 29b (29c) is guided by the guide shaft 80 and moves up and down with respect to the slider 37 by a predetermined stroke amount.

On the other hand, the lifter 2 of the second positioning mechanism 23B
8a is a lifter 28b, 28c of the third and fourth positioning mechanisms 23C, 23D except that the support block 81 described above is fixedly mounted on the second frame 22 via a support plate 90 (see FIGS. 3 and 5). Since it has the same configuration as the above, detailed description will be 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 apparatus 5 by the L-side robot 4 or the sheet transfer device 8, the first to third sheets are installed according to the vehicle type in which the seat 3 is mounted.
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 maximally opened by the extension of the air cylinder 71. In the second positioning mechanism 23B, the first pusher 30A is maximally retracted by the contraction of the air cylinder 31a, and the lifting platform 29a is lifted by the lifter 2.
8a, the first positioning mechanism 23A is positioned at a predetermined vertical position with respect to the fixed base 25 of the 23A.

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 contraction of the air cylinder 31b, and
The lift table 29b is moved by the lifter 28b to the first positioning mechanism 2
It is positioned at a predetermined vertical position based on the fixed base 25 of 3A.

Further, in the fourth positioning mechanism 23D,
The lift table 29c causes the lifter 28c to move the first positioning mechanism 2
The movable base 40 is positioned at a predetermined vertical position based on the fixed base 25 of 3A, and the movable base 40 is positioned at a predetermined front and rear position based on the fixed base 25 of the first positioning mechanism 23A by a driving device such as the motor 41. . In addition, the second rail clamper 27B is maximally opened by the extension of the air cylinder 56.

After the above-mentioned position setting, the first
-The sheet 3 is transferred forward on the fourth positioning mechanisms 23A to 23D.

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.
When the a and 31b are extended, the first and second pushers 30A and 30
When B is pushed by advancing it, the front ends of the lower rails eventually come into contact with the first and second stoppers 26A and 26B to regulate the front ends, 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 contracting the air cylinders 56 and 71, the front ends of the lower rails are paired with the left and right grip pads 5.
It is sandwiched by 2 and the left and right positions of the two lower rails are automatically positioned.

Since the sheet 3 is positioned in this way, when it is subsequently handled by the hand 9 of the robot 4, it can be handled with high accuracy.

The hand 9 of the robot 4 comprises 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 vehicle compartment. Since the specific configuration of the above has already been known from Japanese Patent Application Laid-Open No. 2-258486 by the present applicant, it will not be described here.

[0044]

As described above, according to the present invention, various sheets having different shapes and dimensions are vertically and
Since it is automatically positioned in the left-right and front-rear directions, it is possible to obtain a low-cost seat positioning device that does not require manpower.

[Brief description of drawings]

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

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

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

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

5 is a view likewise seen from the line VV in FIG.

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

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

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

FIG. 9 is a side sectional view of the same 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 likewise a front sectional view of the lifter.

[Explanation of symbols]

 3 seat 4 robot 5 seat positioning device 21 1st mount 22 2nd mount 23A-23D 1st-4th positioning mechanism 25 fixed base 26A, 26B 1st, 2nd stopper 27A, 27B 1st, 2nd rail clamper 29a- 29c Lifting platform 30A, 30B First and second pushers 37 Slider

Claims (2)

[Claims] 1. A first to fourth positioning mechanism corresponding to four corners of a seat cushion, wherein the first positioning mechanism regulates a front end position of a lower rail on either the left or right side of the seat cushion and a front of the lower rail. A first clamper for automatically aligning and holding 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 one lower rail so as to be movable back and forth on a lift base, and a third positioning is performed. The mechanism is provided with a second pusher that presses the rear part of the other lower rail on the left or right side of the seat cushion so as to be movable back and forth on a vertically movable elevator base. The fourth positioning mechanism regulates the front end position of the other lower rail. Two stoppers and a second clamper for automatically centering and holding the front portion of the lower rail are provided on a lift table that can move in the left-right direction. Positioning device for vehicle seats. 2. The vehicle seat positioning device according to claim 1, wherein the second stopper and the second clamper are provided on a movable base that can move back and forth on the lift base.