KR101077232B1 - Device for measuring grasping power - Google Patents

Abstract

The present invention relates to a grip force measuring device.

The thumb force measuring device according to the present invention is the thumb and the index finger which are in contact with the thumb and the index finger which are the measurement targets, and are attached to side surfaces of two measuring bars and two measuring bars which are movable, and are in contact with the side surfaces. A force sensor for sensing the force of the motor; a motor unit for moving the two measurement bars in opposite directions by driving the motor; and a control unit for controlling the operation of the motor unit; driving the motor unit so that the two measurement bars have predetermined physical properties. As the force applied from the thumb and index finger increases, the two measurement bars are moved in opposite directions to each other, and the magnitude of the force applied to the two measurement bars in the moved state is measured.

Grip, measuring bar, movable, motor part

Description

Gripping force measuring device {DEVICE FOR MEASURING GRASPING POWER}

The present invention relates to a grip force measuring device.

A mechanical meter for measuring finger force or handholding force is a gyrometer. In addition, the grip meter is usually attached to the upper portion of the handle, by using the elasticity of the spring by repeating the operation of pressing and releasing the grip force can be obtained the movement effect. The problem is that there is no feedback from the gripper while repeating such exercise, and it is impossible to know whether the grip strength has increased, so that the user easily loses interest in the exercise, and there is a problem that it is difficult to continue the exercise.

In addition, these prior arts can vary the distance of the grip, but there is a limit to the measurement that remains fixed during the measurement. When a person lifts an object, if the object is a rigid object, the conventional gyrometer can measure the force in such a situation.However, for an object that has a low rigidity in which deformation of the object occurs while holding the object, The force in the situation cannot be measured.

In recent years, as research on hands is being actively conducted in academia such as humanoid robot field, rehabilitation engineering, and related industries, it is necessary to represent a variety of situations in real life, considering the need for a grip measurement device in various situations. There is a need for a gyrometer.

Accordingly, in order to solve the above problems, the present invention measures the force while varying the distance between the index finger and the thumb while measuring the force or moving according to the movement of the finger without fixing the distance. It is an object of the present invention to provide a grip force measuring device capable of measuring a pinching force with respect to a distance between a finger that changes statically or dynamically.

In addition, the present invention, by measuring the force in the situation of the user holding a rigid object of various sizes, and the situation in the situation of holding a variety of rigid objects according to the holding force, the holding force in various situations that occur in real life An object of the present invention is to provide a gripping force measuring device capable of measuring.

The gripping force measuring device according to claim 1 is the thumb and the index finger which are in contact with the thumb and the index finger which are the measurement targets, and are attached to side surfaces of two measuring bars that are movable and outwards of the two measuring bars and are in contact with the side surfaces. A force sensor for sensing the force of a finger, a motor unit for moving the two measuring bars in opposite directions by driving the motor, and a control unit for controlling the operation of the motor unit, and the motor unit so that the two measuring bars have predetermined physical properties. By driving, as the force applied from the thumb and the index finger increases, the two measurement bars are moved in opposite directions to each other, and the magnitude of the force applied to the two measurement bars in the moved state is measured.

The gripping force measuring device according to claim 2 is the gripping force measuring device according to claim 1, which drives the motor unit so that two measuring bars have predetermined physical properties, so that the force exerted from the thumb and index finger increases, 2 The two measuring bars are moved in opposite directions to fix the two measuring bars in the moved position, and the magnitude of the force applied to the two measuring bars in the fixed state is measured.

The gripping force measuring device according to claim 3 is the gripping force measuring device according to claim 1, further comprising a detecting unit that detects the magnitude of the force as an electric signal.

The gripping force measuring device according to the fourth aspect of the present invention further includes a display unit for displaying the electric signal detected by the detecting unit in units of force in the gripping force measuring apparatus according to the third aspect of the present invention.

The gripping force measuring device which is an invention of Claim 5 is a gripping force measuring device which is an invention which concerns on Claim 1, and a measuring bar is two screw ball types.

The gripping force measuring device according to claim 6 is the gripping force measuring device according to claim 1, further comprising a power supply unit for supplying power.

The gripping force measuring device according to claim 7 is in contact with a measurement target object as a measurement target, and at least one of the measurement target objects is attached to side surfaces of two measurement bars that are movable and outwards of the two measurement bars and is in contact with the side surfaces. A force sensor for sensing the force of the motor; a motor unit for moving the two measurement bars in opposite directions by driving the motor; and a control unit for controlling the operation of the motor unit; driving the motor unit so that the two measurement bars have predetermined physical properties. As the force applied from the object to be measured increases, the two measurement bars are moved in opposite directions, and the magnitude of the force applied to the two measurement bars in the moved state is measured.

The gripping force measuring device according to claim 8 is the gripping force measuring device according to the seventh aspect, wherein the two measuring bars drive the motor unit so as to have a predetermined physical property value, so that the force applied from the object to be measured increases the two measurements. The bars are moved in opposite directions to fix the two measuring bars in the moved position and the magnitude of the force applied to the two measuring bars in the fixed state is measured.

The gripping force measuring device according to the ninth aspect of the present invention further includes a detecting unit that detects the magnitude of the force as an electric signal in the gripping force measuring device according to the seventh aspect of the present invention.

The gripping force measuring device according to the tenth aspect of the present invention further includes a display unit for displaying the electric signal detected by the detecting unit in units of force in the gripping force measuring apparatus according to the nineth invention.

The gripping force measuring device according to claim 11 is the gripping force measuring device according to the seventh aspect, and further includes a power supply unit for supplying power.

As described above, according to the grip force measuring device according to the present invention, the force is measured while varying the distance between the index finger and the thumb, or the force is measured while moving according to the movement of the finger without fixing the distance. This allows the pinch force to be measured for distances between fingers that change statically or dynamically.

In addition, according to the present invention, by measuring the force in the situation in which the user grasps a rigid object of various sizes, the force in the situation of holding a variety of rigid objects according to the holding force, the holding force in various situations that occur in real life Can be measured.

Specific matters other than the problem to be solved, the problem solving means, and the effects of the present invention as described above are included in the following embodiments and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are only described in order to more easily disclose the contents of the present invention, but the scope of the present invention is not limited to the scope of the accompanying drawings that will be readily available to those of ordinary skill in the art. You will know.

1 is a view for explaining the structure of the grip force measuring apparatus according to an embodiment of the present invention, Figure 2 is an outer view of the grip force measuring apparatus for explaining the structure of the grip force measuring apparatus according to an embodiment of the present invention. .

1 is a view for explaining the structure of the grip force measuring apparatus according to an embodiment of the present invention.

As shown in FIG. 1, a grip force measuring apparatus according to an exemplary embodiment of the present invention includes a measurement bar 100, a force sensor 200, a motor unit 500, a control unit 600, a detection unit 300, and a display unit. 400.

The measurement bar 100 is in contact with the thumb and the index finger as the measurement target, and has at least two or more, and at least one of the measurement bars 100 is movable. This changes the distance D between the measurement bars 100, and the distance D between the changed measurement bars 100 is controlled by the driving of the motor 500 described later. In this case, the measurement bar 100 comprises two bars that are both movable. Moreover, although not shown, the apparatus which measures and analyzes the grip force change with respect to a more complicated deformation | transformation pattern using three or more measurement bars 100 also belongs to the technical scope of the grip force measuring apparatus of this invention. In addition, although it is preferable that both the movable bar and the non-movable bar are fixed at the time of a measurement, when measuring the resistance of the measurement bar 100, etc., it can also be used, without fixing. On the other hand, in the grip force measuring apparatus according to an embodiment of the present invention as the measurement target, the thumb and index finger of the user as an example, but is not limited to this by contacting the two measuring bars to the magnitude of the force between the contacted object Obviously, the present invention can be applied to the measurement.

The force sensor 200 is attached to both sides of the measurement bar to sense the force exerted by the thumb and index finger. That is, the force sensor 200 used in the embodiment of the present invention measures the magnitude of the force at the distance controlled by the motor or the movement between the measuring bars 100.

The motor unit 500 is controlled by the control unit 600 to be described later, thereby moving the measurement bar 100 in the left direction or the right direction. The motor unit 500 serves as a power source for moving the measurement bar 100, and provides a predetermined physical property value to the two measurement bars. Here, the physical property means a unique property given to the object in order to use the object to be used for each purpose. In the embodiment of the present invention, two measurement bars are given a property regarding the movement of the two measurement bars with respect to the magnitude of the force applied by the thumb and the index finger. For example, the rotational motion generated by the motor is converted into linear motion by a cam, pulley or the like, and linearly moves the movable measurement bar 100. The movement of the movable measurement bar 100 driven by the motor unit 500 is controlled by the force of the thumb and the index finger of the user, and the greater the force, the greater the force applied by the user by controlling the distance between the measurement bars. Allows to accurately measure the size of

The control unit 600 causes the kinetic energy generated by the motor unit 500 to move the measurement bar 100 linearly, for example, but the movement is controlled by the control unit. This is because when excessive force is applied to the measurement bar 100, the measurement bar 100 may no longer move, or when the motion control is not properly performed, the reliability of the measurement may be impaired. Such control is preferably performed based on the results of monitoring the magnitude of the force applied to the measurement bar 100. Such control is managed by a computer or the like and serves as a means for determining the movement of the movable measurement bar 100. As such a computer, a commercially available personal computer can be used.

The detection unit 300 detects the magnitude of the force with respect to the magnitude of the controlled distance of the movable measurement bar 100. For example, it is similar to detecting stress, which is a physical property of an elastic body produced by motion. If a person picks up a hard but deformable object such as a rubber ball or a plastic bottle filled with a drink, the finger strength increases initially, but the finger force decreases little by little. That is, when an object having a virtual property value is generated under the control of the motor unit 500 and the force of the thumb and the index finger is increased, the distance is reduced or increased as the object is deformed. The present invention can be applied when trying to measure finger force in such a situation. The detected stress is transmitted to the display unit 400 described later as an electric signal. In this way, the magnitude of the force generated by the size of the controlled distance of the measurement bar is detected as an electric signal and transmitted to the display unit 400 to be described later.

The grip force measuring device of the present invention preferably further has a display unit 400 for displaying the electrical signal data detected by the detecting unit 300. The display unit 400 is, for example, a display.

According to the gripping force measuring device according to an embodiment of the present invention configured as described above, by driving the motor unit 500 so that the two measuring bars 100 have a predetermined physical property value, it is applied from the thumb and index finger As the force increases, the two measuring bars 100 are moved in opposite directions to each other and the magnitude of the force applied to the moving state, that is, the two measuring bars in motion, is measured. That is, by generating a virtual object having a material property such as the above-described elastic body and controlling the driving of the motor unit 500 based on the same, the object moves in opposite directions as the force of the finger increases. In the state, it is possible to measure the force while picking up the real object (ie two measuring bars).

In addition, in the embodiment of the present invention, by driving the motor unit 500 so that the two measurement bars have a predetermined physical property value, the two measurement bars 100 are connected to each other as the force applied from the thumb and the index finger increases. By moving in the opposite direction to fix the two measuring bar 100 in the moved position, it is possible to measure the magnitude of the force applied in the fixed state.

2 is an outer view of a grip force measuring apparatus for explaining a structure of a grip force measuring apparatus according to an exemplary embodiment of the present invention.

As illustrated in FIG. 2, a grip force measuring apparatus for describing a structure of a grip force measuring apparatus according to an exemplary embodiment of the present invention may include a motor controlled by a computer (not shown in FIG. 1) and the rotation of the motor. It includes two ball screw type measurement bar 100, which can move in the opposite direction to follow the tightening or spreading operation of the finger, each force bar 200 mounted on the side of each measurement bar 100. On the other hand, Figure 2 is designed to have the same movement line as the thumb and index finger picking operation will be easily seen to be moved to the left or right by the force applied to the movement of the two measuring bars (100). .

The force sensor 200 is mounted on the side surfaces of two ball screw type measurement bars 100 connected to the linear guide 110 through a bearing (not shown) to measure the force of index finger and thumb. In other words, when pressed with the thumb and index finger, the force sensor 200 is installed in the outward direction.

In addition, the left and right sides of the linear guide 110 are the left screw 111 and the right screw 112 in consideration of the fact that the direction of movement of the thumb and the index finger is reversed when the two fingers are pinched. .

The rotating screw of the ball screw is connected to the motor (not shown) by the coupling 510.

In addition, when the linear guide 110 is rotated by the shaft of the motor, the attachment position of the force sensor 200 protruding on the drawing according to the rotation of the shaft causes the linear guide 110 to linear movement. However, they are in opposite directions, so that when the motor rotates, the distance between them becomes narrow or wide.

The motor is connected to a computer (not shown, see FIG. 1) and controlled in real time by the computer.

Therefore, the grip force measuring device according to an embodiment of the present invention configured as described above, as a grip force measuring device for measuring the pinching force between the index finger and thumb, varying the distance between the index finger and thumb The force can be measured statically or dynamically by measuring the force with a fixed force or by measuring the force with the movement of the finger without fixing the distance.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from equivalent concepts should be construed as being included in the scope of the present invention.

1 is a view for explaining the structure of the grip force measuring apparatus according to an embodiment of the present invention.

Figure 2 is an outer view of the grip force measuring device for explaining the structure of the grip force measuring apparatus according to an embodiment of the present invention.

Claims (11)

Two measuring bars which are in contact with the thumb and the index finger which are to be measured and are movable; A force sensor attached to side surfaces of the two measurement bars in an outward direction and configured to sense a force of the thumb and index finger in contact with the side surfaces; A motor unit for moving the two measurement bars in opposite directions by driving a motor; And a control unit controlling an operation of the motor unit. The motor unit is driven such that the two measuring bars have predetermined physical properties, and as the force applied from the thumb and the index finger increases, the two measuring bars are moved in opposite directions to each other. Measuring the magnitude of the force applied to the two measuring bars, or fixing the two measuring bars at the moved position and measuring the magnitude of the force applied to the two measuring bars in the fixed state, A detection unit that detects the magnitude of the force as an electric signal; And a display unit for displaying the electric signal detected by the detection unit in units of force. Movability A gripping force measurement device, characterized in that for measuring the magnitude of the force relative to the magnitude of the controlled distance of the measurement bar. delete delete delete The method of claim 1, The measuring bar is of two screw ball type, Grip force measuring device. Claim 6 was abandoned when the registration fee was paid. The method of claim 1, Further comprising a power supply for supplying power, Grip force measuring device. Two measuring bars in contact with the object to be measured and movable; A force sensor attached to side surfaces of the two measurement bars in an outer direction and configured to sense a force of the object to be measured in contact with the side surfaces; A motor unit for moving the two measurement bars in opposite directions by driving a motor; And a control unit controlling an operation of the motor unit. The motor unit is driven such that the two measurement bars have predetermined physical properties, and as the force applied from the object to be measured increases, the two measurement bars are moved in opposite directions to each other. Measuring the magnitude of the force applied to the bar, or fixing the two measurement bars at the moved position and measuring the magnitude of the force applied to the two measurement bars in the fixed state, A detection unit that detects the magnitude of the force as an electric signal; And a display unit for displaying the electric signal detected by the detection unit in units of force. Movability A gripping force measurement device, characterized in that for measuring the magnitude of the force relative to the magnitude of the controlled distance of the measurement bar. delete delete delete Claim 11 was abandoned upon payment of a setup registration fee. Further comprising a power supply for supplying power, Grip force measuring device.

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