JP4561640B2 - Endurance testing equipment for sheet skin - Google Patents

Description

  The present invention relates to a durability test apparatus for a seat skin, which can quickly and accurately measure the durability of a seat skin using a simple device.

  For example, in seats used in automobiles, the side part of the seat cushion that is raised when getting on and off rubs against the passenger's buttocks. May occur. For this reason, sheet manufacturers are demanded to develop a skin having excellent durability that does not cause wrinkles or hair fall due to rubbing.

  Conventionally, as shown in Patent Document 1, a seat prototype is prepared as a durability test apparatus for a seat skin, and a friction element that has the same load and movement as a passenger is attached to the side of the seat cushion. What measures the durability of an epidermis by making it act on a part has prevailed widely. In this case, although it has the advantage of being able to measure in a state very similar to the actual sheet mode, it takes a long time to produce the prototype, and if the epidermis is unacceptable, it is necessary to produce the prototype again. There was a problem of prolonging the period.

  On the other hand, it has also been proposed to perform a durability test only on the sheet skin in advance, and to produce a prototype using only acceptable products and perform the above durability test. However, in this case, as shown in Patent Document 2, since the measurement is performed by sliding the friction element back and forth with respect to the sheet skin set straight, a prototype using this sheet skin is used. When manufactured and applied to the above-described durability test apparatus, it may fail, and there is a problem that the reliability of the measurement result is inferior. This is because, in the case of the durability test only for the skin for the sheet, it is measured for the straight skin for the sheet, whereas in the prototype very similar to the actual sheet mode, it is measured for the uneven shape, This is presumably due to the difference in the degree of rubbing of the sheet skin.

  Therefore, the Applicant is able to respond quickly to vehicle seats with diversifying needs, and on the pedestal as an endurance testing device for seat skins that can shorten the test period and reduce costs. In a durability test device for a seat skin having a friction element that moves while pressing the surface side of the set seat skin, and a moving mechanism that moves the friction element, the seat skin extends from the side portion of the seat cushion to the main portion. Is formed in a state in which a pad material corresponding to the sheet skin is interposed between the seat skin and the pedestal. Developed a sheet skin endurance test apparatus having a structure in which a fixing member for changing the tensile force of the skin for skin is provided and both ends of the sheet skin are fixed to the fixing member. It filed as No. 5-320605.

However, when an occupant actually gets on and off, it is extremely complicated such as an oblique motion, a rotational motion, or a torsional motion, whereas in the previous application, the friction element reciprocates left and right. It was a structure and it was difficult to fully respond to the actual getting on / off mode.
JP 2002-131194 A JP-A-4-353742

  The present invention solves the above-mentioned problems, and can measure the durability of the sheet skin with a small and simple device in a short time, and accurately measures in a state very similar to an actual sheet mode. The present invention has been completed for the purpose of providing a sheet skin durability test apparatus that can respond to diversifying needs quickly and at low cost.

In order to solve the above-mentioned problems, the seat skin durability test apparatus of the present invention includes a friction element that moves while pressing the surface side of the sheet skin set on a pedestal, and a moving mechanism that moves the friction element. In the seat skin endurance test apparatus, the seat skin is fixed so as to wrap around the entire periphery of the pad partially simulating the main portion from the side portion of the seat cushion, and the seat skin is When viewed , the friction element is brought into contact with the plane direction of the skin for the sheet by a locus of an arc.

According to a second aspect of the present invention, the moving mechanism for moving the friction element comprises a rotation shaft, an arm extending in the horizontal direction from the rotation shaft, and a friction element attached to the tip of the arm, and the rotation shaft is centered. Further, the friction element rotates in a horizontal plane.
In the invention according to claim 3, a plurality of arms are provided radially about the rotation axis, and the skin for the seat is shifted by a predetermined angle in the horizontal plane with respect to the friction element provided at the tip of each arm. It is characterized by being mounted with.
In the invention according to claim 4, the arm is provided with a plurality of stages in the axial direction of the rotating shaft, and the friction elements at each stage are mounted in a state of being shifted by a predetermined angle in a vertical plane with respect to the arm. It is a feature.
The invention according to claim 5 is characterized in that the pad can be installed at any angle in the horizontal plane and the vertical plane on the rotation trajectory of the friction element. .

  In the seat skin durability test apparatus according to the first aspect of the present invention, the seat skin is fixed so as to wrap around the entire circumference of the pad partially simulating the main portion from the side portion of the seat cushion. Since the friction element is made to contact with the sheet skin with an arc trajectory, a simple test sample can be produced without producing a prototype of the entire sheet as in the prior art. The durability can be measured easily and in a short time, and the skin durability test can be performed in a state very similar to an actual getting-on / off mode such as rotational motion or torsional motion.

  In the invention according to claim 2, the moving mechanism for moving the friction element includes a rotation shaft, an arm extending in a horizontal direction from the rotation shaft, and a friction element attached to a tip portion of the arm, and the rotation shaft is centered. In addition, since the friction element rotates in a horizontal plane, the friction element can be brought into contact with the outer skin with a simple structure with an arc locus.

  In the invention according to claim 3, a plurality of arms are provided radially about the rotation axis, and the seat skin is shifted by a predetermined angle in the horizontal plane with respect to the friction element provided at the tip of each arm. The frictional contact with the epidermis can be changed in various ways in the horizontal plane and easily, and the endurance test of the epidermis should be performed in a state very similar to the actual getting on / off mode. Can do.

  In the invention according to claim 4, the arm is provided with a plurality of stages in the axial direction of the rotating shaft, and the friction elements at each stage are mounted in a state of being shifted by a predetermined angle in a vertical plane with respect to the arm. As a result, the manner in which the frictional element contacts the skin can be variously changed in the vertical plane, and the durability test of the skin can be performed in a state very similar to the actual getting-on / off mode.

  In the invention according to claim 5, the pad can be set at any angle in the horizontal plane and the vertical plane on the rotation trajectory of the friction element. The endurance test of the skin can be performed in a state more similar to the actual getting on / off mode.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
The drawings show the case where the present invention is applied to test the durability of the skin of an automobile seat, wherein FIG. 1 is a front view showing the durability test apparatus of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view showing a contact state between the friction element and the skin.

  In the figure, 1 is a pedestal, 2 is a friction element that moves while pressing the surface side of the sheet skin set on this pedestal, and this friction element 2 is moved while pressing the surface side of the sheet skin. However, the present invention is characterized in that the friction element 2 is brought into contact with a circular locus. In other words, compared to the conventional device that only reciprocates the surface of the sheet skin left and right, the friction element 2 is brought into contact with an arc locus so that the durability of the skin is more closely resembling the actual getting on / off mode. A test is performed.

  As shown in FIG. 3, the friction element 2 has a structure in which a friction element body 2a is fixed to a clamp 2b together with a cotton canvas, and the material, stroke amount, pressing force, type of cotton canvas, etc. of the friction element body 2a can be arbitrarily set. By setting to, it is possible to reproduce the wear test closer to the real state and to measure the durability accurately.

Reference numeral 20 denotes a test sample. In the present invention, the seat cushion comprises a pad partially simulating the main part from the side part of the seat cushion, and a seat skin that wraps the entire circumference of the pad. A test sample 20 fixed with a band-shaped fixing frame 4 is prepared over the entire circumference, and this is set on the base 1.
That is, in the present invention, instead of preparing a prototype of the entire sheet, the durability of the skin is improved by using a partial test sample 20 composed of the same material and the same cross-sectional shape as the prototype sheet. In this way, it is possible to accurately measure in a state that is very similar to an actual sheet mode.

Also, as shown in FIG. 4, a similar pad 21 that partially simulates the main part from the side part of the seat cushion and a seat skin 22 that wraps the entire circumference of the pad 21 are set on the base 1. The front and rear end portions 22a and 22b of the skin 22 can be fixed to a state in which they are pulled with an arbitrary force, for example, strongly pulled by the fixing members 1a and 1b provided on the front and rear of the base 1, or the skin is pulled too weakly. .
In addition, a frame member 23 made of a hard material simulating a seat frame can be mounted inside the pad 21. In this case, the durability of the epidermis can be measured in a state more similar to the seat mode. Become.

  As shown in FIGS. 1 to 2, the moving mechanism 3 for moving the friction element 2 according to the present invention is attached to the rotating shaft 5, the arm 6 extending horizontally from the rotating shaft 5, and the tip of the arm 6. The friction element 2 is configured such that the friction element 2 rotates around a rotation axis 5 in a horizontal plane. Thus, by rotating the friction element 2 around the rotation axis 5 in a horizontal plane, the test sample 20 can be brought into contact with an arc trajectory, and is more similar to an actual getting-on / off mode. The endurance test of the epidermis is performed.

  In the illustrated example, four arms 6 are provided radially around the rotation shaft 5, and the frictional element 2 at the tip is further at a predetermined angle (for example, 22.5 degrees) with respect to the arm 6 in the horizontal plane. ) When the arm 6 is rotated once, the frictional element 2 is gradually twisted from 0 degrees to 90 degrees, and can be brought into contact with the sheet skin with an arc locus. . Of course, the number of arms 6 and the predetermined angle can be arbitrarily set.

Further, the arm 6 is provided in three stages in the axial direction of the rotating shaft 5, and the friction element 2 of each stage is shifted by a predetermined angle (for example, 22.5 degrees) in a vertical plane with respect to the arm 6. It is possible to contact the sheet skin at an angle of 0 to 45 degrees at a time. Of course, the number of steps of the arm 6 and the predetermined angle can be arbitrarily set.
FIG. 5 and FIG. 6 show an example of the mounting mechanism of the arm 6. A large number of holes 5 a are formed in the axial direction of the rotating shaft 5, and the fixing pins 6 a of the arm 6 are inserted into arbitrary holes 5 a. The friction element 2 can be mounted at an arbitrary position by aligning the attachment portion of the friction element 2 and the tip of the arm 6 with an arbitrary hole 7 and screwing them.

The test sample 20 has a structure that can be set at any angle in the horizontal plane and the vertical plane on the rotation trajectory of the friction element. Thereby, how to hit in all directions can be set at one time, and various patterns that are very similar to the actual getting-on / off mode can be assumed.
An example is shown in FIG. 7, but the height of the pedestal 1 can be adjusted with a jack 8 or the like, for example.

  According to the test apparatus as described above, the friction element 2 is applied to the seat skin fixed so as to wrap around the entire periphery of the pad partially simulating the main portion from the side portion of the seat cushion in a circular locus. It is a structure to be contacted, and it is possible not only to reciprocate in the lateral direction but also to contact the friction element 2 in a state very similar to the actual sheet mode, so that the durability of the skin can be measured very accurately. It becomes.

  In addition, although the above description demonstrated the durability test of the skin in a seat cushion part, of course, it can apply similarly to the durability test of the skin of the side part in a seat back part, and a main part. In addition, since the apparatus of the present invention is compact as a whole because of its compact design, it can be tested in, for example, a thermostatic chamber. In this case, the influence of the surrounding environment (for example, , Temperature, humidity, etc.), and the test can be performed in a stable state.

It is a front view which shows embodiment of this invention. It is a top view which shows embodiment of this invention. It is a perspective view which shows the contact state of a friction child and an outer skin. It is a disassembled perspective view which shows the example of a position of the installation state of the sample for a test. It is a perspective view which shows an example of the mounting mechanism of an arm. It is a perspective view which shows an example of the mounting mechanism of a friction child. It is a perspective view which shows an example of the installation structure of the sample for a test.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Friction element 3 Movement mechanism 4 Fixed frame 5 Rotating shaft 6 Arm 20 Test sample

Claims (5)

In a durability test apparatus for a seat skin having a friction element that moves while pressing the surface side of the seat skin set on a pedestal, and a moving mechanism that moves the friction element, the seat skin is a side portion of the seat cushion. Is fixed so as to wrap around the entire circumference of the pad partially simulating the main part, and when the sheet skin is viewed from above, the friction element is formed in an arc shape with respect to the plane direction of the sheet skin . A durability test apparatus for a seat skin, characterized in that it is brought into contact with a locus.   The moving mechanism for moving the friction element is composed of a rotation axis, an arm extending horizontally from the rotation axis, and a friction element attached to the tip of the arm, and the friction element rotates in a horizontal plane around the rotation axis. The apparatus for testing a durability of a skin for a sheet according to claim 1, which moves.   A plurality of arms are provided radially around the rotation axis, and the seat skin is mounted with a predetermined angle offset in the horizontal plane with respect to the friction element provided at the tip of each arm. The durability test apparatus for the skin for sheets according to claim 2.   The arm is provided with a plurality of stages in the axial direction of the rotating shaft, and the friction elements at each stage are mounted in a state of being shifted by a predetermined angle within a vertical plane with respect to the arm. Durability test equipment for the skin of the sheet.   The pad according to any one of claims 1 to 4, wherein the pad can be installed at any angle in a horizontal plane and a vertical plane on a rotation trajectory of the friction element. Endurance test equipment for sheet skin.

Images