JPH0415893B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a durability testing device for vehicle seats, etc.
In particular, it is used in a riding durability test to evaluate changes in appearance quality due to repeated boarding and alighting.

BACKGROUND ART In vehicle seats, for example, seats in automobiles, the surface of the seat may wrinkle, sag, float, etc. due to repeated getting on and off the seat over a long period of time, and the appearance quality may be impaired.

For this reason, in the manufacturing process of this type of seat, a durability test is conducted that simulates the act of actually getting on and off the seat, measuring changes in appearance quality and evaluating durability. In some cases, durability tests were carried out by people actually getting on and off the machine, which limited the amount of work that could be done, and also had the disadvantage of requiring a considerable amount of time to conduct the tests, which significantly reduced work efficiency. Ta.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a boarding and alighting durability testing device that can automatically perform a boarding and alighting durability test of vehicle seats and the like.

That is, the present invention provides various movement mechanisms for the back and forth, left and right, up and down, twisting movements, and the tilting movement of the thigh provided on the buttock, on the buttock that is in contact with the seat cushion of a vehicle seat for testing. This is automatically performed to simulate getting on and off the vehicle.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the entire structure of the ingress/egress durability test device for vehicle seats, etc. according to the present invention, and 1 is a base frame;
The butt mold 2 is coupled to the lower end of a rod 33 extending substantially perpendicularly downward from the upper surface of the base frame 1. This butt mold 2 has a thigh part 3 that can tilt, and the butt mold 2 including this thigh part 3 is placed on the seat cushion Sc of the seat S to be tested, and the base frame 1 The front panel 5 of the control unit 4, which is formed on one side of the vehicle, is operated to perform a simulated getting on/off motion by combining the front/back, left/right, up/down, twisting, and thigh tilting motions.

The above-mentioned back and forth, left and right, up and down, and twisting movements of the butt mold 2 are performed by the respective movement mechanisms constructed on the top surface of the base frame 1, and the tilting of the thigh 3 is controlled by the large rod 33. This is performed by an operating mechanism configured above the thigh 3.

FIG. 2 shows the operating mechanism of the butt mold 2 constructed on the upper surface of the base frame 1. In the figure, 1a indicates the upper surface of the base frame 1, and a window hole is provided at a predetermined position on the upper surface 1a. 6 is formed, and linear ways 7a and 7b are provided on the left and right sides of this window hole 6 in the front-rear direction. A longitudinally movable platen 8 is placed on the linear ways 7a, 7b so as to be slidable in the longitudinal direction. The front and rear movable platen 8 has a rectangular shape, and has rack gears 9a and 9b protruding from the left and right sides of the front thereof. The pinion gears 11a and 11b are meshed with each other. Further, a drive gear 12 disposed coaxially with the pinion gears 11a and 11b is meshed with a rack gear 14 of the piston rod 13.
is connected to a cylinder 15 for longitudinal operation as an operation means provided substantially perpendicularly to the base frame 1 side. Further, a longitudinal control tranducer 16 fixed to the base frame 1 side is slidably connected to the left side edge of the longitudinally movable platen 8 .

Furthermore, a window hole 17 is formed in the front and rear movable platen 8 and communicates with the window hole 6 of the base frame upper surface 1a.
a, 18b are provided, and a left-right movable platen 19 is placed on the linear ways 18a, 18b so as to be slidable in the left-right direction. This left and right movable plate 19
There are two front and rear rack gears 20a, 2 in the left and right direction.
0b is formed, and these rack gears 20a, 20b
Pinion gears 22a and 22b fitted onto a shaft rod 21 pivotally supported on the front and rear movable platen 8 side are engaged with the pinion gears 22a and 22b. Furthermore, these pinion gears 22a, 22b
A drive gear 23 disposed coaxially with the piston rod 23 is engaged with a rack gear 26 of a piston rod 25 via an interlocking gear group 24, and the piston rod 25 is connected to a cylinder 27 for left and right operation provided approximately perpendicularly to the front and rear movable platen 8 side. connected. Further, a left-right control transducer 28 fixed to the front-rear movable plate 8 side is in sliding contact with the rear edge of the left-right movable plate 19.

The left and right movable platen 19 is connected to the butt mold 2 via a rod 33, and is provided with a vertical movement mechanism and a twist movement mechanism.

That is, as shown in FIG. 3, a vertically operating cylinder 29 is provided approximately perpendicularly on the left and right movable plate 19, and a piston rod 30 connected to this vertically operated cylinder 29 moves the left and right movable plate 19 as will be described later. A rotating drum 31 is pivotally supported by the rotary drum 31 and is suspended downward through the window hole 17 and the upper surface portion 1a of the base frame.
The rod 33 is connected via the connecting member 32 inside the
The rod 33 extends through the center of the rotating drum 31, and the butt mold 2 is attached to its lower end. As shown in FIG. 4, the connecting member 32 has a structure in which a thrust bearing 34 is inserted so that the rod 33 can rotate in the circumferential direction relative to the piston rod 30.
When the piston rod 3 makes a twisting movement, this twisting movement is not transmitted to the piston rod 30. Further, an interlocking plate 35 is fitted above the butt mold 2 of the rod 33 so as to be rotatable in the circumferential direction.
An interlocking rod 36 fixed to the rod 5 is movable in the vertical direction together with the rod 33, and the upper part of the interlocking rod 36 is connected to the rotating drum 3 extending downward from the left and right movable platen 19.
It is in sliding contact with a vertical control transducer 38 fixed to one support arm 37.

Further, the rod 33 engages with the rotating drum 31 in the rotational direction and is slidably supported in the axial direction. That is, as shown in FIG.
3 has a plurality of protrusions 39 formed in the vertical direction, and these protrusions 39 engage with grooves 40a formed corresponding to the inner surface of the lid 40 fitted to the lower end of the rotating drum 31. As described later, the rotating drum 3
The rotation of the rod 33 is transmitted in the circumferential direction of the rod 33, and the vertical movement of the rod 33 in the axial direction is not hindered.

The rotary drum 31 has its lower outer circumferential surface supported by the above-mentioned support arm 37 so as to be rotatable in the circumferential direction via a bearing 41, and its upper portion is connected to the left and right movable plate 19 via a bearing 42 via a shaft. A ring gear 43 is fixed to the upper end surface. As shown in FIG. 2, this gear 43 is meshed with a rack gear 46 of a piston rod 45 via an interlocking gear group 44, and this piston rod 45 is connected to a twist operation cylinder 47 provided horizontally on the left and right movable plate 19. There is. Furthermore, a gear 49 that is directly connected to a twist control transducer 48 meshes with the interlocking gear group 44 .

Also, the thigh 3 attached to the lower end of the rod 33
The butt mold 2 is made of an elastic material having the required elasticity, has a skeleton member 50 disposed therein, and has a fulcrum 51 rotatably connected to the rod 33.
The left and right thighs 3 are designed to tilt around the center. That is, the upper edge of the thigh 3 is provided with a longitudinal linear way 52 connected to an internal skeleton member 50, and a piston rod 54 is connected to this linear way 52 via a crank 53 having a bearing. , this piston rod 54 is connected to a thigh actuating cylinder 55 fixed vertically to the rod 33 side. The thigh actuating cylinders 55 are provided on the left and right thighs 3, respectively. Further, near the fulcrum 51 of the skeleton member 50, a thigh control transducer 56 fixed to the rod 33 side is in sliding contact.

The butt type 2 of this device consists of the above-mentioned operating mechanism.
The operations are performed by operating cylinders for each operation.

First, the seat S to be tested is placed in the test object placement portion 1b of the base frame 1, and the butt mold 2 is made to correspond to the seat cushion Sc. In this case, the front and rear movable plates 8 and the left and right movable plates 19 are connected to respective operating cylinders 15.
and 27 to move in the required direction, and the butt mold 2
correspond to a desired position of the seat cushion Sc, for example, a normal seating position.

By operating the vertical operation cylinder 29, the vertical movement of the piston rod 30 is transmitted to the rod 33 via the connecting member 32.
The butt mold 2 attached to the lower end of the rod 33 moves in the vertical direction and pressurizes the seat cushion Sc as shown in FIG. 7A (normal seating position pressurization test).

In addition, with the buttock mold 2 pressed against the seat cushion Sc with the required pressure, the thigh tilting cylinder 55
By operating this piston rod 5
4 is transmitted to the linear way 52 via the crank 53, the thigh 3 tilts around the fulcrum 51, and as shown in FIG. Pressurize and perform a pressurization test under operating conditions.

Seat cushion for the above buttocks type 2 and thigh area 3
When changing the pressurizing point for Sc, actuate the front/rear operating cylinder 15 and the left/right operating cylinder 27 respectively to move the front/rear movable plate 8 and the left/right movable plate 19 to the seat cushion Sc of the butt type 2. Change the corresponding position (as shown by the two-dot chain line in Figure 8).

Next, in a pressurization test assuming a seated state in which the seat is deflected at a position deviated from the normal seated position, by operating the twist actuation cylinder 47, the back and forth movement of the piston rod 45 is controlled by the interlocking gear group 44.
The rotational motion is transmitted to the rotating drum 31 via Then, as shown in FIGS. 9A and 9B, the direction corresponding to the seat cushion Sc is changed, and pressure is applied to the side edges of the seat cushion Sc.

Further, by operating the left and right actuating cylinder 27, the vertical movement of the piston rod 25 is transmitted as a rotational movement to the drive gear 23 via the interlocking gear group 24, and furthermore, this rotational movement is arranged coaxially with the drive gear 23. pinion gear 22a,
22b to the rack gears 20a, 20b, and the left and right movable platen 19 is connected to the linear ways 18a, 18.
Move left and right on b. Therefore, the butt mold 2 moves in the left-right direction together with the vertical movement mechanism and twist movement mechanism provided on the left-right movable platen 19, and the lateral pressing position is changed from the state shown in A to the state shown in B in FIG. 9, for example. Ru.

In addition, by operating the longitudinal operation cylinder 15, the vertical movement of the piston rod 13 is transmitted to the drive gear 12 and becomes a rotational movement. 9a, 9
b, and the front and rear movable plate 8 moves the linear way 7a,
7b in the front-back direction. Along with this, the butt mold 2 moves in the front and rear direction together with the left and right movable plate 19 placed on the front and rear movable plate 8, and the pressurizing position in the front and rear direction is changed as shown by the two-dot chain line in FIG. Apply pressure to the tip of the seat cushion Sc.

By continuously and alternately performing the above vertical movement, twisting movement, and movement movement of the butt mold 2, the seat cushion Sc can be continuously and evenly pressurized over the entire surface.

In this way, in this device, the butt mold 2 is placed on the seat cushion Sc of the seat under test S, and the movements of front and back, left and right, up and down, twisting, and thigh tilting are performed in appropriate combinations. , it is possible to perform simulated operations assuming all types of boarding and alighting conditions.

The actuation cylinders of each of the above operating mechanisms are actuated by signals from the control unit 4, and the control transducers provided in each of the operating mechanisms detect the respective actuation amounts. All the signals are input to the control unit 4, and the operating status of each operating mechanism is displayed on the front panel 5, so you can set the operating amount, check the operating status, etc.
The control unit 4 can be easily operated on the front panel 5.

In addition, a microcomputer is built into the control unit 4, and by storing the combinations of actuation amounts for each operating mechanism, etc., it is possible to easily operate the device when getting on and off the vehicle repeatedly.

Furthermore, since the durability of the operating cylinder provided for each operating mechanism is low in a normal cylinder, this device particularly employs an air cylinder with a brake.

As shown in FIG. 10, this air cylinder with a brake is equipped with a brake b that locks the operation of the piston rod l on the cylinder c.
The brake b is unlocked when air a is injected into the brake chamber cb, and locked when air a is discharged from the brake chamber cb.

A cylinder c with such a brake b
In the non-operating state, air a is injected into the front chamber cf and the rear chamber cr, and the piston p is in a stopped state, and at the same time, air a is discharged from the brake chamber cb, and the brake b locks the piston rod l inoperable. (See A in the same figure).

When operating forward from this state, inject air a into brake chamber cb to release the lock by brake b (see B in the same figure), and immediately after that,
When air a is discharged from cf and simultaneously injected into rear chamber cr, piston p, that is, piston rod l, moves forward in the direction of arrow x (see C in the same figure).
After the piston p has moved to the required position, air a is injected into the front chamber cf to stop the piston p (see D in the same figure), air a is discharged from the brake chamber cb, and the piston rod l is locked by the brake b. (See figure E).

In addition, when reversing from this state, air a is injected into the brake chamber cb to release the lock by the brake b (see figure F), and immediately after that, air a is discharged from the rear chamber cr and at the same time the front chamber When air a is injected into cf, the piston p, that is, the piston rod l moves backward in the direction of arrow x' (see G in the same figure). After the piston p has moved to the required position, air a is injected into the rear chamber cr to stop the piston p (see H in the same figure), air a is discharged from the brake chamber cb, and the brake b is used to move the piston rod l.
(See I in the same figure). As above,
The cylinder c is moved forward and backward by injecting and discharging air a.

By adopting an air cylinder with a brake in this way, it is possible to reduce the overload that is applied to the piston rod l by the cylinder c when performing each operation of the butt type 2, so it is more durable than a normal cylinder. performance is significantly improved.

In addition, the air a supply circuit is connected to the control section 4 described above.
This control section 4
By incorporating a supply program for air a into the cylinder, the operation of cylinder c can be easily controlled.

Although this example shows an example in which a cylinder is provided as the operating means of each operating mechanism, the present invention is not particularly limited to this, and driving means such as a motor and a cam mechanism may be used as necessary. good.

As described above, according to the present invention, in a durability test for getting on and off a seat, it is possible to automatically perform getting on and off operations almost the same as in reality instead of a human, and there is no limit to the amount of work or time constraints, and accurate getting on and off operations can be performed. Since this process can be repeated repeatedly, work efficiency is significantly improved compared to when a person actually gets on and off the vehicle.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the outline of a boarding/alighting durability testing device according to the present invention, Fig. 2 is a plan view of the boarding/alighting durability testing device according to the present invention, Fig. 3 is a partially cutaway side view of main parts, and Fig. 4 is a partially cutaway side view of the main part,
Figure 5 is a sectional view taken along line A-A' in Figure 3, and
The figure is a partially cutaway side view of the main part, FIGS. 7 to 9 are diagrams for explaining the operation of the boarding/exiting durability testing device of the present invention, and FIG. 10 is a diagram for explaining the operation of the cylinder. In the figure, 1 is the base frame, 2 is the buttocks, 3 is the thigh, and 8
19 is a front and rear movable plate, 19 is a left and right movable plate, 31 is a rotating drum, 33 is a rod, 15, 27, 29, 47,
55 is a cylinder as a means of operation, S is a seat,
Sc is seat cushion.

Claims (1)

[Claims] 1 A front and rear movable plate that can slide in the front and rear directions and an operating means for the front and rear movable plate are provided on the upper surface of the base frame, and a left and right movable plate that can slide in the lateral direction and A means for operating a left and right movable plate is provided, and a thigh that is rotatably coupled to the vertically movable plate in the circumferential direction via a rod and is rotatable in the circumferential direction is provided on the left and right movable plate. a rotary drum supporting the rod so as to be slidable in the axial direction and engageable in the circumferential direction; and operating means for the rotary drum;
The above-mentioned butt-shaped thigh tilting means is provided,
The butt mold is placed on the seat cushion of the seat to be tested, each of the operating means is operated separately, and the butt mold is moved in each direction relative to the seat cushion to apply pressure. A durability testing device for getting on and off vehicle seats, etc.