阅读说明：本技术 滑动试验装置和滑动试验方法 (Sliding test device and sliding test method ) 是由 高岛恒男 井土友香理 于 2017-06-23 设计创作，主要内容包括：滑动试验装置(1)具备试验用部件(2)、滑动传感器(3)、按压机(4)、按压力计(5)、保持部(11)和位移计(8)。按压机(4)被限制载荷方向的移动,在与试验用部件(2)的与载荷方向正交的方向的端面即侧面之间夹持试样(20),并能够在与载荷方向正交的方向上按压试样(20)。保持部(11)将试样(20)保持在试验用部件(2)的侧面与按压部(12)之间。按压力计(5)测量将试样(20)向试验用部件(2)的侧面按压的力。位移计(8)测量试验用部件(2)的载荷方向的移动。滑动传感器(3)测量试样(20)相对于按压部(12)或试验用部件(2)的沿载荷方向的滑动。(A sliding test device (1) is provided with a test member (2), a sliding sensor (3), a pressing machine (4), a pressing force meter (5), a holding section (11), and a displacement meter (8). The presser (4) is capable of pressing the sample (20) in a direction orthogonal to the load direction while holding the sample (20) between side surfaces, which are end surfaces of the test member (2) in the direction orthogonal to the load direction, while restricting movement in the load direction. The holding section (11) holds the sample (20) between the side surface of the test member (2) and the pressing section (12). The force with which the sample (20) is pressed against the side surface of the test member (2) is measured by a pressure gauge (5). The displacement meter (8) measures the movement of the test member (2) in the load direction. The slide sensor (3) measures the sliding of the sample (20) in the load direction with respect to the pressing part (12) or the test member (2).)

1. A sliding test device is provided with:

a test member;

a pressing mechanism that is capable of pressing the sample against an end surface of the test member in a direction orthogonal to the load direction, the pressing mechanism being configured to restrict movement of the test member in the load direction, the pressing mechanism sandwiching the sample between the pressing mechanism and the end surface;

a holding section for holding the sample between the end surface of the test member and the pressing mechanism;

a pressure gauge for measuring a force with which the pressing mechanism presses the sample against the end surface of the test member;

a displacement meter that measures movement of the test member in the load direction; and

and a sliding measuring unit that measures sliding of the sample in the load direction with respect to the pressing mechanism or the test member.

2. The sliding test apparatus according to claim 1,

the holding portion holds the sample between the end surface of the test member and the pressing mechanism so as to be movable in the load direction with respect to the test member and the pressing mechanism.

3. The sliding test apparatus according to claim 1 or 2,

the sliding test apparatus includes a control unit that applies a pressing force between the end surface and the sample by the pressing mechanism with a magnitude that does not move the test member in the load direction, measures movement of the test member in the load direction by the displacement meter while reducing the force applied by the pressing mechanism, and measures sliding of the sample with respect to the pressing mechanism or the test member by the sliding measurement unit.

4. The sliding test apparatus according to claim 3,

the control unit, after reaching a predetermined condition from the start of measurement of the movement of the test member in the load direction and the sliding of the sample with respect to the pressing mechanism or the test member,

the pressing mechanism applies a pressing force between the end surface and the sample in such a magnitude that the test member does not move in the load direction, and the displacement meter measures the movement of the test member in the load direction while reducing the force applied by the pressing mechanism, and the slide measuring unit measures the slide of the sample with respect to the pressing mechanism or the test member.

5. The sliding test apparatus according to any one of claims 1 to 4,

the sliding test device is provided with:

a support mechanism that supports the test member so as to be movable in the load direction orthogonal to the direction pressed by the pressing mechanism; and

and a load applying device capable of applying a force in the load direction orthogonal to the pressing direction by the pressing mechanism to the test member.

6. The sliding test apparatus according to claim 5,

the load applying device may apply a force in the load direction and may apply a torque for rotating the test member about an axis in the load direction.

7. The sliding test apparatus according to claim 5 or 6,

the support mechanism supports the test member in an overhanging manner while keeping the load direction vertical,

the pressing mechanism presses the sample and the slide measuring unit in a horizontal direction against the end surface of the test member,

the displacement meter measures the movement of the test member in the vertical direction.

8. The sliding test apparatus according to any one of claims 1 to 7,

the test member is columnar, the load direction is a direction of a central axis of the columnar,

the pressing mechanism presses the sample against a side surface of the test member in a direction orthogonal to a central axis of the columnar shape,

the displacement meter measures movement of the test member in the direction along the center axis.

9. The sliding test apparatus according to any one of claims 1 to 8,

the holding unit includes a mechanism for applying a tensile force to the sample in a direction orthogonal to the direction pressed by the pressing mechanism.

10. The sliding test apparatus according to any one of claims 1 to 9,

the pressing mechanism includes an opposing portion that opposes the sample with the test member interposed therebetween, allows movement of the test member in the load direction, and holds a position of the test member in a direction orthogonal to the load direction against a force pressing the sample.

11. The sliding test apparatus according to any one of claims 1 to 9,

the pressing mechanism presses the first sample against one end surface of the test member in a direction orthogonal to the load direction, and presses the second sample against the other end surface of the test member in the direction orthogonal to the load direction,

the holding portion includes: a first holding section for holding the first sample; and a second holding portion that holds the second sample,

the sliding measurement section includes: a first sliding measurement unit that measures sliding of the first sample with respect to the pressing mechanism or the test member in the load direction; and a second sliding measurement unit that measures sliding of the second sample with respect to the pressing mechanism or the test member in the load direction.

12. A sliding test method comprising the following processes:

pressing the sample in a direction orthogonal to the load direction by a pressing mechanism whose movement in the load direction is restricted, on an end surface of the test member in the direction orthogonal to the load direction,

measuring a force with which the pressing mechanism presses the sample against the end surface of the test member by pressing a pressure gauge,

the movement of the test member in the load direction is measured by a displacement meter while the pressing force is reduced from a state in which the pressing force of a magnitude that does not move the test member in the load direction is applied between the end face and the sample by the pressing mechanism, and the sliding of the sample in the load direction with respect to the pressing mechanism or the test member is measured by a sliding measurement unit.

Technical Field

The present invention relates to a sliding test apparatus and a sliding test method.

Background

Functional materials that are interposed between two objects and that have the function of a boundary surface with each object as desired characteristics are used in various scenes. For example, working gloves are required to have strength, durability, and a feeling of fit, and further, gripping force and anti-slip properties when gripping an object, depending on the respective applications. Gloves have also been developed for use in sports that are each adapted to hold and manipulate a golf club, racket, stick, steering wheel, handle, cord, or the like. In addition, a fabric for adsorbing and removing dirt on the surface of an object, for example, the surface of a lens or glass, or a fabric for applying a coating material such as wax or a lubricant to the surface of an object to smooth the surface is used.

As an index indicating the characteristics of these functional materials, sliding of the boundary surface can be mentioned. A representative sliding characteristic is a friction coefficient. For example, patent document 1 describes a method of measuring a friction coefficient. The friction measuring device of patent document 1 includes: a pressurizing unit that applies a pressurizing force in a direction orthogonal to a first measurement surface formed by a first measurement object and a second measurement surface formed by a second measurement object in a state where the first measurement surface and the second measurement surface are in contact with each other; a moving means for relatively moving the first measurement surface and the second measurement surface along the measurement surface; and a load measuring unit that measures a load when the first measuring surface and the second measuring surface start to move relative to each other and during the relative movement.

As the functional material, for example, patent documents 2 and 3 describe measurement of a friction coefficient of one surface of a sample cut out from a glove. Further, since the gripping force is affected not only by the friction between the object and the fabric but also by the friction between the fabric and the skin, patent document 4 proposes a method of measuring the gripping force of the fabric.

A slip detection device is known for the characteristics of a boundary surface other than a friction coefficient. Patent document 5 discloses an initial slip detection unit of a simple structure. In the slip detection device of patent document 5, when the contact member is in contact with the contact receiving member via the pressure-sensitive conductive sheet, the detection signal sent from the pressure-sensitive conductive sheet is received, and based on a change in the resistance value of the pressure-sensitive conductive sheet, when a high-frequency waveform component generated immediately before the occurrence of the sliding displacement of the contact member exceeds a given threshold value, it is confirmed that the initial slip has occurred immediately before the occurrence of the sliding displacement.

Patent document 6 describes a sliding motion and a sliding direction detection device. The sliding and sliding direction detecting device of patent document 6 detects an initial sliding occurring immediately before a sliding displacement of the contact member with respect to the sensor unit in which electrode portions formed by arranging two electrodes at a predetermined interval are arranged in a grid shape and a pressure-sensitive conductive sheet having a resistance value changing in accordance with a normal direction force is arranged on an upper surface of the electrode portions, when a high-frequency waveform component generated by a sliding operation of the contact member with respect to the sensor unit exceeds a predetermined threshold value, calculates a center position of a load distribution with respect to the sensor unit based on a change in the resistance value of the pressure-sensitive conductive sheet, and detects a sliding direction from a direction from the center position of the load distribution when the initial sliding is detected.

Disclosure of Invention

Problems to be solved by the invention

The friction coefficient measurement is performed by measuring the friction coefficient of one boundary surface. However, for example, the evaluation of the feeling of use of gloves cannot be obtained by measuring the friction coefficient independently for each single surface.

In patent document 4, the gripping force combining the friction between the object and the fabric and the friction between the fabric and the skin is measured. However, in the grip strength measurement of patent document 4, the slip between the object and the fabric and the slip between the fabric and the skin cannot be evaluated separately. In the grip strength evaluation of patent document 4, even with the same grip strength, it is expected that the actual feeling of use differs between the occurrence of slippage mainly between the object and the fabric and the occurrence of slippage mainly between the fabric and the skin.

The present invention has been made in view of the above circumstances, and an object thereof is to simultaneously measure the respective sliding movements of both surfaces of a sample.

Means for solving the problems

A sliding test apparatus according to a first aspect of the present invention includes:

a test member;

a pressing mechanism that is capable of pressing the sample against an end surface of the test member in a direction orthogonal to the load direction, the pressing mechanism being configured to restrict movement of the test member in the load direction, the pressing mechanism sandwiching the sample between the pressing mechanism and the end surface;

a holding section for holding the sample between the end surface of the test member and the pressing mechanism;

a pressure gauge for measuring a force with which the pressing mechanism presses the sample against the end surface of the test member;

a displacement meter that measures movement of the test member in the load direction; and

and a sliding measuring unit that measures sliding of the sample in the load direction with respect to the pressing mechanism or the test member.

The sliding test method according to the second aspect of the present invention includes the following steps:

pressing a sample in a direction orthogonal to a load direction of a test member by a pressing mechanism whose movement in the load direction is restricted, on an end surface of the test member in the direction orthogonal to the load direction;

measuring a force with which the pressing mechanism presses the sample against the end surface of the test member by pressing a pressure gauge,

the movement of the test member in the load direction is measured by a displacement meter while the pressing force is reduced from a state in which the pressing force of a magnitude that does not move the test member in the load direction is applied between the end face and the sample by the pressing mechanism, and the sliding of the sample in the load direction with respect to the pressing mechanism or the test member is measured by a sliding measurement unit.

Effects of the invention

According to the present invention, the respective sliding movements of both surfaces of the sample can be measured simultaneously.

Drawings

Fig. 1 is a configuration diagram of a sliding test apparatus according to embodiment 1 of the present invention.

Fig. 2 is a block diagram of a sliding test apparatus according to embodiment 1.

Fig. 3 is a conceptual diagram of the result of the sliding test according to embodiment 1.

Fig. 4 is a configuration diagram of a sliding test apparatus according to embodiment 2 of the present invention.

Fig. 5 is a configuration diagram of a sliding test apparatus according to embodiment 3 of the present invention.

Fig. 6 is a block diagram of a sliding test apparatus according to embodiment 3.

Fig. 7 is a flowchart showing an example of the operation of the sliding test according to embodiment 3.

Fig. 8 is a flowchart of the operation of the sliding test according to embodiment 3.

Fig. 9 is a configuration diagram of a sliding test apparatus according to embodiment 4 of the present invention.

Fig. 10 is a block diagram of a sliding test apparatus according to embodiment 4.

Fig. 11 is a flowchart showing an example of the operation of the sliding test according to embodiment 4.

Fig. 12 is a configuration diagram of a sliding test apparatus according to embodiment 5 of the present invention.

Fig. 13 is a cross-sectional view of the slide test apparatus according to embodiment 5.

Fig. 14 is a configuration diagram of a slide test apparatus according to embodiment 6 of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals.