KR19980074290A - Car Seat Tester - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat tester for a vehicle, wherein an inspection sheet member driving means for moving an inspection sheet member made of a shock absorbing member such as a skin material and a polyurethane foam in a predetermined direction in an exterior case. And a power transmission and driving means for rotating the twister for pressurizing the sheet member to be inspected from above with one driving source and simultaneously applying a moving force to the sheet member driving means to be inspected in a predetermined direction, and repeatedly freely dropping the twister. And a twister elevating means for raising and applying a repetitive load to the sheet member to be inspected, and a load varying means for varying the impact applied to the sheet member to be inspected by applying an arbitrary load to the twister. And durability of impact buffer members such as polyurethane foams stored therein. The test will accurately so that you can get an accurate result.

Description

Car Seat Tester

The present invention relates to a seat tester for a vehicle, and more particularly, to more accurately test the durability of the shock absorbing member such as the skin material of the seat and the polyurethane foam housed therein so as to obtain precise results. One vehicle seat tester.

In general, the seat of an automobile is worn by the skin by the repeated seating motion of the occupant over a long period of time and by the repetitive load caused by the vibration generated during the driving of the road where the road condition is not good. As a phenomenon occurs, the appearance quality is deteriorated, and a shock absorbing member such as a polyurethane foam, which is stored in the skin material, is pressed downward by the same cause as described above, thereby failing to fully function. .

Therefore, in manufacturing a car seat, the actual seat is subjected to a durability test under the conditions of the same use state to measure the environment such as the time when the appearance quality of the skin material changes, and the environment such as the time when the shock absorbing force decreases. Efforts have been made to produce higher quality sheets by measuring.

However, the known durability test technology of the sheet is not only limited in the amount of work, such as repeatedly seated on the human seat, but also takes a long time to obtain the test results, and also bears tangible and intangible losses. There was also a problem that the overall work efficiency for the test of the sheet is greatly reduced, such as the test results are not uniform and the reliability of the test results is lowered.

In order to solve the above problems, various types of durability test apparatuses are known for automatically measuring the durability of a car seat without manual labor, and a typical embodiment thereof is known in Japanese Patent Laid-Open No. 1-51767. No. (name; durability test apparatus such as a vehicle seat (hereinafter referred to as 'seat') and flat 4-15893 (lift durability test apparatus such as a vehicle seat).

According to the durability test apparatus of the former vehicle seat etc., the operating means couple | bonded with the operation lever of the reclining apparatus of the test seat, and the operation lever of the spring raising apparatus, respectively, and the rotation center are respectively the reclining apparatus and the spring raising apparatus, respectively. It consists of a reclining device and a spring raising return operation which are equipped with a pivoting arm pivoted against the seatback on an arm moved corresponding to a hinge position, each of which is automatically operated by a driving means individually. It is characterized in that it is configured to be.

In addition, according to the latter lifting durability test apparatus such as a vehicle seat, the front and rear movable shelves which can slide in the front and rear directions on the upper surface of the gas frame, and the operation means of the front and rear movable shelves are installed in the transverse direction on the front and rear movable shelves. The movable left and right movable shelves and the operation means of the left and right movable shelves are also installed, and the left and right movable shelves are rotatably coupled to the circumferential direction by means of rods in the up and down direction and the up and down operation means. And a solid drum having a thigh portion capable of tilting, a rotary drum for axially supporting the rod slidably in the axial direction, and an operation means of the rotary drum, and a solid thigh portion mounted on the rod. Inclined operation means, the solids are placed on the cushion of the seat under test That one operates separately for each stage to press by bringing the said solid in each direction with respect to the cushion and characterized.

However, in the above-mentioned durability test apparatus of the former vehicle seat according to the prior art, there is an advantage that the durability of the seat reclining and the spring lifting device is automatically tested without manual labor, but the skin of the seat and the polyurethane The durability of the shock absorbing members such as foams could not be effectively measured, and thus the durability of the sheets, in particular the measurement of the durability of the skin material and the shock absorbing members, was limited.

In addition, in the latter lifting durability test apparatuses such as vehicle seats, there is an advantage of testing the durability of the skin material and the shock absorbing member of the sheet, but in practice, the part for measuring the durability is the skin material of the sheet and the shock absorbing member, but the sheet is necessarily There was a disadvantage in that the whole assembly was required, and it was configured not only to apply the same pressure toward the lower side of the seat despite the weight of the occupants being different, but also to the weight applied when the occupant was seated on the seat of the car. The expected impact effect could not be expected, resulting in a lack of confidence in the test results.

In addition, as the number of driving sources is increased, the number of driving sources is required to drive each lathe and operating means, which is very disadvantageous in terms of energy saving. There was a problem such as working.

In addition, since there is no door in the exterior case, there is no countermeasure against dust and dust generated during the work, which pollutes the surrounding environment and impairs the health of the worker, or in case of malfunction by the operation. It could not be excluded that the worker was injured.

In addition, since there is no separate configuration for easily moving the gas frame, there is a problem in that the gas frame can not be moved arbitrarily with respect to the surrounding situation, which in some cases acts as a factor of reducing work efficiency.

SUMMARY OF THE INVENTION The main object of the present invention is to provide a vehicle seat tester capable of more precisely testing the durability of a shock absorbing member such as a skin material of a seat and a polyurethane foam housed therein so as to obtain accurate results.

Another object of the present invention is to provide a vehicle seat tester that can effectively test the durability of the sheet by using a piece of the skin material and a piece of the shock absorber without using the assembly of the whole sheet.

Still another object of the present invention is to provide a vehicle seat tester that can arbitrarily adjust the load according to the weight change of the occupant to improve the reliability of the test results.

Still another object of the present invention is to provide a vehicle seat tester which reduces the number of driving sources, contributes to the reduction of energy use, and reduces the production cost.

Another object of the present invention is to prevent the scattering of dust and dust generated during the work to prevent pollution of the surrounding environment as well as to protect the health of the worker and to prevent the risk of malfunctions during work In providing a tester.

It is still another object of the present invention to provide a vehicle seat tester which enables the movement of the seat tester main body to contribute to the improvement of work efficiency.

1 is a perspective view of the overall appearance of a vehicle seat tester according to the present invention.

2 is a rear view of a vehicle seat tester according to the present invention;

3 is a plan view of a vehicle seat tester according to the present invention.

4 is a cross-sectional view taken along the line AA of FIG.

5 is an exploded perspective view showing the seat member driving means for inspection of the vehicle seat tester according to the present invention.

FIG. 6 is an enlarged sectional view taken along the line BB of FIG. 4. FIG.

7, a and b is shown by cutting the C-C line of FIG.

7A is a cross-sectional view illustrating an OFF state of the electronic clutch.

7B is a sectional view showing an ON state of the electronic clutch.

8 is an enlarged view of a foot master configuring a vehicle seat tester according to the present invention.

* Description of the symbols used in the main parts of the drawings *

10; Appearance case 11; Sheet member for inspection

12; Twister13; Base plate

14; Post15; shelf

16; Lower frame 17; Upper frame

18; Transparent window 19; door

20; Friction cloth 21; First drive motor

22,22 '; Ball bush 23; Slide shaft

24,25; Lower rails 26,27; Lower guide shoe

28; Left and Right Slide Plates

29,30; Upper rails 31, 32; Upper guide shoe

33; Forward and backward slide plate

34; Motor bracket 35; Axis of rotation

36; Second drive motor 37; 1st turn plate

38,39; First and second connecting members 40; First crankshaft

51; Axis of rotation 52; Power relay

53; Reducer 54,55; Upper and lower output shaft

56,57; Upper and lower axle shafts 58; Second turn plate

59,60; Third and fourth connecting members 61; Second crankshaft

62,63; First and second rotary gears 64,65; Linear guide member

66; Rack 67; Right and left movement rack shaft

68,69; Fifth and sixth connecting members 70; Third crankshaft

71; Twister shaft 72; First pinion

81; Weight plates 82,83; bush

84,85; Rack 86,87; Rack shaft for lifting

88; Horizontal drive shafts 89,90; 2nd pinion

91; Electronic clutch 92; Third drive motor

93; Intermediate friction plate 101; wait

102; Weight storage plate 103; Weight Support

104; Upper rotating beam 105; Slider

106; Hoist 107; wire

108; Hanger grooves 109,110; Hanger

121; Foot master 122; nut

123; Bearing angle 124; Support roller

130; Friction cloth

In order to achieve the above object of the present invention, the inspection sheet member driving means for moving the inspection sheet member made of a shock absorbing member, such as a skin material and a polyurethane foam, in a predetermined direction, inside the outer case; A power transmission and driving means for rotating the twister which presses the sheet member to be inspected from the upper side with a driving source of the same, and imparting a moving force to the sheet member driving means to be inspected in a predetermined direction; A vehicle seat, comprising: a twister elevating means for repeatedly applying a load to a sheet member to be inspected; and a load varying means for varying an impact applied to the sheet member to be inspected by applying an arbitrary load to the twister. A tester is provided.

At least one transparent window and a door are provided in the exterior case.

The foot case is characterized in that several foot masters are installed on the lower surface of the exterior case to facilitate movement or prevent flow in the set state.

Hereinafter, the vehicle seat tester according to the present invention will be described according to the embodiment shown in the accompanying drawings.

1 is a perspective view of an overall appearance of a vehicle seat tester according to the present invention, FIG. 2 is a side view of a vehicle seat tester according to the present invention, FIG. 3 is a plan view of a vehicle seat tester according to the present invention, and FIG. 5 is an exploded perspective view showing the sheet member driving means for inspection of the vehicle seat tester according to the present invention, and FIG. 6 is an enlarged sectional view taken along the line B-B of FIG. 4 is a cross-sectional view taken along the line C-C of FIG. 4, and FIG. 8 is an enlarged view of the foot master configuring the vehicle seat tester according to the present invention.

As shown in the drawing, the vehicle seat tester according to the present invention moves the inspection sheet member 11, which is made of an impact buffer member such as a skin material and a polyurethane foam, to the inside and outside directions of the exterior case 10. The sheet member driving means for inspection and the twister 12 which presses the sheet member 11 for inspection from the upper side by one driving source, and at the same time, impart the horizontal force to the sheet member driving means for inspection. Power transmission and driving means, twister elevating means for repeatedly freely dropping and raising the twister 12 to repeatedly apply the load to the sheet member 11 for inspection, and give an arbitrary load to the twister 12. To provide a load varying means for varying the impact applied to the sheet member 11 for inspection.

When the arrangement relationship of each element which comprises the above-mentioned vehicle seat tester of this invention is demonstrated, the base plate 13 is formed in the inner bottom face of the exterior case 10, and the square part in the middle part of the base plate 13 is square. The post 14 is erected in a columnar shape, and a rectangular shelf 15 is fixedly installed on the upper surface of the post 14 in a horizontal direction, and the twister 12 is rotated on one side of the shelf 15. And it is coupled to the lifting operation.

The lower frame 16 is fixed to the lower side of one side of the post 14 in a horizontal direction, and the first drive motor 21 constituting the power transmission and driving means is fixed to an upper surface of the lower frame 16. The power of the first drive motor 21 is transmitted to the lower part to drive the sheet member driving means for inspection, and the part is transmitted to the upper part to rotate the twister 12.

The upper frame 17 is fixed to the upper side of the other side of the post 14 in the horizontal direction, the twister lifting means is provided on one side of the upper frame 17.

The exterior case 10 is provided with at least one transparent window 18 and a door 19.

Hereinafter, each component of the vehicle seat tester according to the present invention will be described in detail.

The sheet member driving means for inspection includes ball bushes 22 and 22 'which are respectively installed in the same straight line on both sides of the lower middle portion of the post 14, and the posts 14 to the ball bushes 22 and 22'. A predetermined distance between the slide shaft 23 which is coupled to protrude to both sides of the circumference and reciprocated by the power of the first driving motor 21 constituting the power transmission and driving means, and on both sides of the upper surface of the base plate 13. Lower rails 24 and 25 fixed to each other and lower guide shoes 26 and 27 coupled to the lower rails 24 and 25 on both sides of the lower surface, respectively, are connected to the slide shaft 23. The left and right moving slide plates 28 fixed and linearly moved along the lower rails 24 and 25 and a phase difference of 90 ° with the lower rails 24 and 25 on both sides of the upper surface of the left and right moving slide plates 28. Upper rails 29 and 30 fixed at predetermined intervals and upper and lower surfaces on both sides Upper guide shoes 31 and 32 coupled to the rails 29 and 30 are respectively provided, and are coupled to be movable in the front-rear direction along the upper rails 29 and 30, respectively, and have a sheet member for inspection on the upper side. 11) the front and rear movement slide plate 33 supported, the motor bracket 34 fixed to a side of the upper surface of the left and right movement slide plate 28 with a predetermined height difference, and the motor bracket 34 The second drive motor 36 is fixed to the rotary shaft 35 to face downward, the first rotary plate 37 is fixed to the rotary shaft 35 of the second drive motor 36 and one side end is The first connecting member 38, such as a link ball, is connected to the eccentric position of the first rotating plate 37, and the other end is connected to the middle portion of one side edge of the slide plate 33 for forward and backward movement by the second connecting member 39. It consists of the 1st crank shaft 40 which becomes.

The power transmission and driving means is a drive motor 21 is fixed to the inside of the upper surface of the lower frame 16, and the rotation shaft 51 and the power relay is fixed to the outside of the upper surface of the lower frame 16 It is connected to the reducer 53 connected to the means 52 and the upper and lower output shafts 54 and 55 of the reducer 53, respectively, and is fixed to the upper and lower portions of the shelf 15 and the lower frame 16, respectively. Upper and lower axle shafts 56 and 57 rotatably supported to penetrate the second shaft, a second rotating plate 58 fixed to a lower end of the lower axle shaft 57, and one end of the second rotating plate 58. 58 is connected to a third connecting member 59 such as a link ball at an eccentric position, and the other end is connected to a slide shaft 23 of the seat member driving means to be inspected to a fourth connecting member 60 such as a link ball. A second crankshaft 61, a first rotary gear 62 fixed to an upper end of the upper axle shaft 56, The second rotary gear 63 which is rotatably installed on the upper surface of the shelf 15 and is always engaged with the first rotary gear 62, and fixed to the upper surface of the shelf 15 at predetermined intervals. Left and right movement rack shafts are formed on the linear movement guide members 64, 65, and the rack 66 is formed on one side of the outer peripheral surface of the linear movement guide members 64, 65 so as to enable linear movement. (67), one end is connected to the eccentric position of the second rotary gear 63 by a fifth connecting member 68 such as a link ball, and the other end is connected to the rack shaft 67 by a sixth link such as a link ball. A third crankshaft 70 connected to the member 69 and an upper portion of the twister shaft 71 coupled to be rotatable and liftable on an opposite side of the shelf 15 opposite the upper axle shaft 56. And a first pinion 72 that is always engaged with the rack 66 of the rack shaft 67. It is.

The twister lifting means is a weight plate 81 which is fixed to the upper end of the twister shaft 71, bushes 82 and 83 installed to penetrate up and down on both sides of one end of the shelf 15, and the weight The bottoms of the plate 81 are fixed to both sides, and the racks 84 and 85 are formed on the outer circumferential surface by a predetermined length, respectively, and extend through the bushes 82 and 83 to the lower side of the upper frame 17. The rack shafts 86 and 87 for lifting and lowering, a horizontal drive shaft 88 axially supported in the lower frame 17 in a horizontal direction, and are rotatably fixed to both sides of the horizontal drive shaft 88; In addition, the second pinion (89) and (90), respectively engaged with the rack (84, 85) of the rack shaft (86) (87) for lifting and lowering, and is installed on one side of the upper frame (17) and the horizontal drive shaft (88) Connected to the electronic clutch 91 and the electronic clutch 91 It consists of the 3rd drive motor 92. As shown in FIG.

The electromagnetic clutch 91 is a commonly used structure, and a type of adsorbing a friction plate using an electromagnetic force, a type of controlling an electric current flowing through a stator connection and an armature winding, and using an electromagnetic induction action therebetween are known. As illustrated in FIGS. 7A and 7B, the electromagnetic clutch 91 applied to the present invention moves in the direction of the arrow shown by the intermediate friction plate 93 depending on whether power is applied to the power of the twister driving motor 92. Is selectively supplied to the horizontal drive shaft 88, a detailed description of the clutch action will be omitted since it is a general matter.

4 and 6, the weight varying means includes several weights 101 stacked on the weight plate 81 and a weight plate 81 on one side of the base plate 13. A weight storage support 103 which is erected adjacent to and formed with a weight storage plate 102 at an intermediate portion, an upper rotation beam 104 rotatably coupled to an upper portion of the support 103, and the upper rotation beam The slider 105 is supported so as to be movable inside the 104, and the hoist 106 is connected to the slider 105 to facilitate the movement of the weight 101.

The hoist 106 is a wire 107 is supported by the elastic means (not shown) to receive a force in the always winding direction, the lower end of the wire 107 is formed on the outer peripheral surface of the weight 101 Several hook parts 109 and 110 are formed to be hooked to the hook groove 108.

The foot master 121 having a conventional structure is fixed to each corner portion of the lower surface of the outer case 10, and when setting the position of the tester, the nut 122 is formed using a tool such as a spanner. Rotating the support angle 123 is lowered so that the support angle 123 is supported in contact with the ground, and when the tester is moved, the support angle 123 is raised by the reverse rotation of the nut 122 to support the ground. The roller 124 is comprised so that it may be supported.

In the drawings, reference numeral 130 denotes a friction cloth that is detachably coupled to the twister 12, 131, 132, 133, 134, 135, and 136 show bearings, respectively, and 137 and 138 are different types of power. Each relay is shown.

Referring to the operation of the vehicle seat tester according to the present invention configured as described above are as follows.

First, the sheet member 11 for inspection is set on the slide plate 33 for front and rear movement, the friction cloth 130 is inserted into the twister 12, and the weight 101 of the appropriate weight is placed on the weight plate 101. Release.

As such, when power is applied to the tester in a state in which test preparation is completed, each of the first, second, and third drive motors 21, 36, 92 is driven, and thus the power of the first drive motor 21 is increased. Is decelerated while passing through the reducer 53, and is transferred to the lower axle shaft 57 → the second rotating plate 58 → the second crankshaft 61 → the slide shaft 23 to linearly reciprocate the slide shaft 23. Let's do it.

By the linear reciprocating motion of the slide shaft 23, the left and right movement slide plate 28 repeatedly performs linear reciprocation in the left and right direction, and at the top of the left and right movement slide plate 28, the forward and backward movement slide plate 33 is The linear reciprocating movement is repeated repeatedly in the front and rear directions.

As a result, the sheet member 11 for inspection is subjected to repeated linear reciprocating motion along the X and Y axes.

On the other hand, the power of the first drive motor 21 passing the reduction gear 53 is the upper axle shaft 56 → the first rotary gear 62 → the second rotary gear 63 → the third crankshaft 70 → left and right It is transmitted to the rack rack 67 for movement, and linearly reciprocates the rack shaft 67 for left-right movement.

At this time, since the rack 66 is formed in the rack shaft 67 for left and right movements by a predetermined length, the first pinion 72 meshing with the rack 66 is linearly reciprocated by the rack shaft 67 for left and right movements. Repeatedly rotated, so that the friction member 130 of the twister 12, which is fixed to the lower end of the twister shaft 71 is rotated integrally and moves along the X and Y axes, the sheet member to be inspected ( By frictional contact with the upper surface of 11), the durability of the sheet member 11 for inspection is measured.

On the other hand, the power of the third drive motor 92 is selectively transmitted to the horizontal drive shaft 88 by the electronic clutch 91, as described above, the friction cloth 130 on the upper surface of the sheet member 11 for inspection At the time of the friction contact, power is not supplied to the electronic clutch 91. As shown in FIG. 7A, the power of the third driving motor 92 is cut off, and the sheet to be inspected in this state is provided. When a shock corresponding to the driver's load is applied to the member 11, an electrical signal is transmitted to the electronic clutch 91, and as shown in FIG. 7B, the intermediate friction plate 93 is shown in the direction of the arrow Z. And second power pins 89 and 90 fixed to both sides of the horizontal drive shaft 88 by transmitting power of the third drive motor 92 to the horizontal drive shaft 88 through the electronic clutch 91. Rotate

At this time, the second pinions 89 and 90 are engaged with the racks 84 and 85 of the lifting rack shafts 86 and 87, respectively, so as to raise the lifting rack shafts 86 and 87. Thus, the twister shaft 71 also rises.

Then, when the twister shaft 71 rises to a predetermined maximum height, the power supplied to the electronic clutch 91 is cut off and the intermediate friction plate 93 moves to the initial position, whereby the power of the third drive motor 92 is increased. It is no longer transmitted to the horizontal drive shaft 88.

Accordingly, the weight plate 81 on which several weights 101 are loaded is dropped by self-falling weight, and the twister 12 coupled to the lower end of the twister shaft 71 descends to lower the friction cloth 130. ) Exerts an impact on the sheet member 11 for inspection.

On the other hand, when varying the load on the sheet member 11 for inspection, the upper rotating beam 104 is rotated to a predetermined position, and then the hoist 106 supported by the upper rotating beam 104 is moved. Hanging on the hanger groove 108 of the weight 101 using the hook portions 109 and 110 connected to the hoist 106, the weight 101 of the weight plate 81 is supported by the weight storage support 103. It can be moved to the weight storage plate 102 to reduce the load, or the weight 101 of the weight storage plate 102 can be moved to the weight plate 81 to increase the load.

In addition, since several foot masters 121 are installed at each corner of the lower surface of the exterior case 10, the support angle 123 is supported on the ground during operation of the tester to prevent flow, and the support roller (when moving) 124 may be supported on the ground to facilitate movement.

On the other hand, the exterior case 10 is provided with at least one transparent window 18 and the door 19, so that the working state of the interior through the transparent window 18 in the state in which the door 19 is closed, In operation, the door 19 may be closed to prevent dust and dust from scattering, and may prevent injury to an operator in case of malfunction.

In the vehicle seat tester according to the present invention as described above, for example, the front and rear strokes of the inspected sheet member 11 are 150 mm ± 5 mm, the variable speed is 11 to 22 times / minute, and the left and right strokes are 150 mm ±. 5 mm, the variable speed is 11 to 22 times / minute, the twist angle of the twister 12 is 15 ° ± 1 °, 22.5 ° ± 1 °, 30 ° ± 1 °, and the variable speed is 5.5-11 times It is preferable to set it to / min, and individual operation of the first drive motor 21, the second drive motor 36 and the third drive motor 92 by manual and automatic switches is possible.

In particular, the variable speed of the first drive motor 21 and the second drive motor 36 is an inverter, that is, a converter unit for converting a three-phase commercial power source, which is an alternating current, and the direct current to a variable voltage, variable frequency It is composed of an inverter unit for making and outputting the alternating current of the three-phase squirrel cage by installing a device for controlling the speed of the induction motor can be easily changed the feed speed.

In addition, the variable speed of the first, second and third drive motors 21, 36 and 92 can be speed checked by volume control, that is, digital display by a speed meter.

As described above, the vehicle seat tester according to the present invention drives the inspection sheet member for moving the inspection sheet member, which is made of an impact buffer member such as a skin material and a polyurethane foam, in a predetermined direction inside the exterior case. Means, a power transmission and driving means for rotating the twister for pressing the sheet member under test from the upper side with one driving source and simultaneously applying a moving force to the sheet member driving means for inspection, in a predetermined direction, and repeatedly freeing the twister. Twister lifting and lowering means for dropping and raising to repeatedly apply a load to the sheet member to be inspected, and load varying means for varying the impact applied to the sheet member to be inspected by applying an arbitrary load to the twister. Shocks such as the skin material and polyurethane foam housed therein Has the advantage of obtaining a precise result is tested more precisely the durability of the charging member.

In addition, it is possible to effectively test the durability of the seat by using a piece of skin material and a shock absorbing member without using the whole assembly of the seat, and to arbitrarily adjust the load according to the weight change of the occupant, thereby improving the reliability of the test result. It not only contributes to the reduction of energy use by reducing the number of driving sources, but also reduces the production cost, prevents dust and dust scattering during work, prevents pollution of the surrounding environment, and protects the health of workers. This prevents the risk of malfunction, and enables the movement of the body of the sheet tester, thereby contributing to the improvement of work efficiency.

Each means constituting the vehicle seat tester according to the present invention is not limited to the embodiments described in the detailed description and shown in the drawings. Accordingly, various modifications may be made without departing from the spirit of the inventive concept of the claims of this invention and its dependent claims.

Claims (3)

The sheet member driving means for inspecting to move the sheet member to be inspected made of the shock absorbing member such as the skin material and the polyurethane foam in a predetermined direction to the inside of the outer case, and press the sheet member for inspection from the upper side with one driving source. A power transmission and drive means for rotating the twister and simultaneously applying a moving force to the sheet member driving means for inspection and a twister for repeatedly applying the repeated load to the sheet member for inspection by freely dropping and raising the twister. A vehicle seat tester, comprising: a lowering means and a load varying means for applying an arbitrary load to the twister to vary an impact applied to the sheet member for inspection. The vehicle seat tester according to claim 1, wherein the exterior case is provided with at least one transparent window and a door. 2. The seat tester for a vehicle according to claim 1, wherein several foot masters are installed on a lower surface of the outer case to facilitate movement or to prevent flow in a set state.