Skin condition measuring device

Abstract

The present application provides a skin condition measuring device capable of accurately and stably reproducing a good measurement of a human skin condition. According to the present application, a skin condition measuring device is provided, which includes a frame, a base fixed to the inside of the frame, a sliding portion supported to the frame in a slidable manner, a sensor portion supported to the sliding portion in a slidable manner, a first force applying mechanism applying force to the sensor portion in a manner that the front end portion of the sensor portion is distanced from the sliding portion, a cover portion having a guide surface for pressing against the skin and an opening portion formed in the guide surface for the front end portion of the sensor portion to pass through, and the cover portion is detachably linked to the sliding portion, and a second force applying mechanism applying force to the sliding portion in a manner that the guide surface is distanced from the frame, wherein the guide surface is initially moved toward the frame only as the guide surface is pressed by the skin, and then the guide surface and the front end portion of the sensor portion are moved toward the frame.

Description

TECHNICAL FIELD

[0001] The present application relates to a skin property measuring device for measuring a property of a human skin (skin), and particularly to a skin property measuring device provided with a frame portion, a measurement assisting unit supported to the frame portion in a slidable manner and guided in a manner that a pressing angle of a sensor portion with respect to a skin surface of a subject becomes a right angle, and the sensor portion supported to the measurement assisting unit in a slidable manner, and a front end portion of the sensor portion is arranged outside the measurement assisting unit only at the time of measurement. BACKGROUND

[0002] As a device for measuring a property such as a water content of a human skin (skin), a skin property measuring device is known. Among them, measurement of a water content of a skin is generally performed by pressing an electrode composed of a pair of an anode and a cathode against the skin to flow a current, and measuring an electrical conductivity (conductivity) of the skin between the electrodes. However, in the measurement method of the water content of the skin as described above, the measurement sensitivity differs depending on a contact angle of the electrode with the skin and a pressing force, and thus there is a problem that it is difficult to reproduce a good measurement of an accurate water content of the skin.

[0003] Therefore, in order to stabilize the pressing force of the electrode against the skin, for example, as described in Japanese Patent Application Publication No. 2003-169787 (Patent Literature 1), a skin moisture measuring device has been developed in which a sensor provided with an electrode that is pressed against a skin of a human is movably installed to a housing via a spring, and a user is notified when a prescribed pressing force is applied to the sensor, thereby facilitating measurement of a water content of the skin under a constant pressing force.

[0004] However, the skin moisture measuring device described in Patent Literature 1 not only fails to stabilize the contact angle of the sensor with the skin, but also the skin of the portion pressed by the sensor is deformed, and the skin of the surrounding portion thereof is also deformed in a wide range. Therefore, the elasticity of the skin of the measurement portion is not only affected by a change in the elasticity caused by the deformation of the skin pressed by the sensor, but also affected by a tensile stress and the like generated due to the deformation of the skin of the surrounding portion thereof, and there is a problem that it becomes extremely unstable. That is, the skin moisture measuring device described in Patent Literature 1 has a problem that even if the pressing force generated by the sensor on the device side is made constant and stable, if the elasticity of the skin required for measuring the water content of the human body is not made stable, it is not possible to reproduce a good measurement of an accurate water content of the skin.

[0005] On the other hand, in order to stabilize the contact angle and the pressing force of the electrode with the skin, for example, as described in Japanese Patent Application Publication No. 2001-046344 (Patent Literature 2), a skin property measuring probe is developed in which an electrode that is pressed against the skin of a person is arranged in a ring shape on a probe end surface having a certain area, and the probe end surface is pressed by a spring, thereby measuring the water content of the skin.

[0006] However, in the skin property measuring probe described in Patent Literature 2, the probe end surface on which the electrode is arranged is formed by a flat surface having a wide area, and thus, for example, in a site such as an arm of a person that has almost no flat portion and most of which is formed by a curved surface, even if the probe end surface is pressed against the skin, a pressure distribution occurs in the probe end surface and the electrode, and as a result, the pressing force generated by the electrode becomes uneven and unstable, and there is a problem that the water content of the skin cannot be accurately and reproducibly measured.

[0007] Further, in the skin moisture measuring device described in Patent Literature 1, a display mechanism is developed in which the appropriate pressing force of a sensor provided with an electrode is informed to a user by a mechanism that displays the relative position of the sensor and a housing.

[0008] However, the display mechanism described in Patent Literature 1 displays that the appropriate pressing force is reached as long as the sensor is moved to a prescribed position with respect to the housing, even if it is not actually the appropriate pressing force, in a case where the sensor provided with the electrode is not pressed against the skin of a person at an appropriate pressing angle, and thus, there is also a problem that measurement failure caused by, for example, poor pressing of the sensor portion cannot be prevented.

[0009] Prior Art Documents

[0010] Patent Literature

[0011] Patent Literature 1: Japanese Patent Application Publication No. 2003-169787

[0012] Patent Literature 2: Japanese Patent Application Publication No. 2001-046344 SUMMARY

[0013] Problems to be Solved by the Invention

[0014] Therefore, an object of the present application is to provide a skin property measuring device that can accurately and stably reproduce good measurement of the water content and the skin property such as elasticity of the skin of a person having various properties such as the surface shape and the elasticity.

[0015] Means for Solving the Problems

[0016] The present inventors have repeatedly conducted intensive studies on a method for stabilizing the contact angle and pressing force of a probe, an electrode, and skin and the structure thereof in a skin property measuring device for measuring the properties of human skin (skin), and as a result, have found that if the probe portion is divided into a sensor portion provided with an electrode and the like and a measurement assistance unit that controls the pressing angle of the tip portion of the sensor portion, and a spring or the like that applies a force is provided to each of the sensor portion and the measurement assistance unit, and the sensor portion is pressed in such a manner that the elasticity (reaction force) of the skin becomes constant, the above-described problems can be solved, thereby completing the present invention.

[0017] That is, according to the present invention, there is provided a skin property measuring device including a housing, a base portion fixed to the inside of the housing, a sliding portion supported to the housing in a slidable manner, a sensor portion supported to the sliding portion in a slidable manner, a first force applying mechanism that applies a force to the sensor portion in such a manner that the tip portion of the sensor portion is distanced from the sliding portion, a cover portion having a guide surface for pressing against the skin of a subject and an opening portion provided in the guide surface for the tip portion of the sensor portion to pass through, and the cover portion is detachably coupled to the sliding portion, and a second force applying mechanism that applies a force to the sliding portion in such a manner that the guide surface is distanced from the housing, characterized in that the skin property measuring device is configured such that, as the guide surface is pressed by the skin of the subject, initially only the guide surface moves toward the housing, and then the guide surface and the tip portion of the sensor portion move toward the housing.

[0018] Note that in the present application, the sliding portion and the cover portion coupled to the sliding portion move integrally, and thus they are sometimes collectively referred to as a "measurement assistance unit". In addition, the skin property measuring device of the present invention can measure the skin properties such as the water content and elasticity of the skin of an animal if the measurement target is the skin.

[0019] In the present invention, as the guide surface of the cover portion is pressed by the skin of the subject, the guide surface having a larger contact area than the tip portion of the sensor portion comes into contact with the skin of the subject before the tip portion of the sensor portion comes into contact with the skin of the subject. Thus, in the present invention, first the cover portion is guided in such a manner that the pressing angle with respect to the surface of the skin of the subject becomes a right angle, and then when the tip portion of the sensor portion comes into contact with the skin of the subject, the tip portion of the sensor portion is also guided by the cover portion in such a manner that the pressing angle with respect to the surface of the skin of the subject becomes a right angle, and thus the skin properties of the subject can be measured in an appropriate contact manner.

[0020] In the skin property measuring device of the present invention, it is preferable that the device be configured such that, as the guide surface of the cover portion is pressed by the skin of the subject, after the guide surface and the tip portion of the sensor portion move toward the housing, only the tip portion of the sensor portion further moves toward the housing.

[0021] Further, in the skin property measuring device of the present application, it is preferable that the sensor portion be configured so that, after the leading surface of the cover portion is pressed by the skin of the subject and the leading end portion of the sensor portion moves toward the frame, the pressing force per unit area generated at the leading end portion of the sensor portion is the same as or greater than the pressing force per unit area generated at the leading surface.

[0022] According to the present application, after the leading surface and the leading end portion of the sensor portion move toward the frame, the skin of the subject exposed in the opening portion of the leading surface is fixed by the edge portion of the opening portion, and thus a uniform and constant elastic force is maintained. Therefore, after the above movement, by configuring the sensor portion so that the pressing force per unit area generated at the leading end portion of the sensor portion is the same as or greater than the pressing force per unit area generated at the leading surface, the leading end portion of the sensor portion can be brought into contact with the skin of the subject, which is maintained at a uniform and constant elastic force, regardless of the amount of penetration (pressing force) of the leading surface, and the skin property can be measured with high accuracy.

[0023] Further, in the skin property measuring device of the present application, it is preferable that the sensor portion be configured so that, after the leading surface of the cover portion is pressed by the skin of the subject and the leading end portion of the sensor portion moves toward the frame, the pressing force per unit area generated at the leading end portion of the sensor portion is the same as or greater than the pressing force per unit area generated at the leading surface.

[0024] According to the present application, the leading end portion of the sensor portion is guided so that the angle of pressing with respect to the surface of the skin of the subject becomes a right angle, and the switch is brought into an on state in a state where the skin of the subject is maintained at a uniform and constant elastic force, and the measurement is started, and thus the skin property such as the moisture content and the elastic force can be accurately and stably measured.

[0025] In the skin property measuring device of the present application, it is preferable that the first cylindrical portion in sliding contact with the base portion be provided in the sensor portion, the second cylindrical portion in sliding contact with the sensor portion be provided in the base portion, and the center axis of the first cylindrical portion and the center axis of the second cylindrical portion be arranged on the same axis in a manner that the first and second biasing mechanisms can be simply supported and compactly arranged.

[0026] Further, it is more preferable that, in the case where the sliding portion has the opening portion in sliding contact with the sensor portion, the center axis of the opening portion and the center axis of the first cylindrical portion of the sensor portion be arranged on the same axis.

[0027] As described above, it is preferable that, in the case where the sensor portion has the first cylindrical portion and the base portion has the first cylindrical portion, the first biasing mechanism use the first coil spring, the second biasing mechanism use the second coil spring, and the center axis of the first coil spring and the center axis of the second coil spring be arranged on the same axis.

[0028] Further, preferably, a first coil spring is arranged between the base and the sensor portion, and a second coil spring is arranged between the base and the sliding portion.

[0029] In the skin property measuring device of the present application, for example, by providing an electrode composed of a pair of positive and negative electrodes for measuring the water content of the skin of the subject at the front end portion of the sensor portion, the skin moisture measuring device can be used.

[0030] Further, in this case, preferably, a plurality of electrodes are arranged in order to improve the measurement accuracy of the water content of the skin of the subject.

[0031] In the skin property measuring device of the present application, preferably, an indicator for displaying the relative positions of the cover portion of the measurement assisting unit and the sensor portion with respect to the frame is provided at the side portion of the frame, and more preferably, the indicator is provided with a window portion formed at the side portion of the frame, a first display portion supported in a slidable manner inside the window portion and linked to the sliding portion of the measurement assisting unit, and a second display portion supported in a slidable manner inside the window portion and linked to the sensor portion.

[0032] The skin property measuring device of the present application, in order to accurately measure the skin property of the subject, is provided with a sensor portion capable of being separately moved independently, and a measurement assisting unit (cover portion and sliding portion) for guiding the pressing angle of the front end portion of the sensor portion. Therefore, in the present application, by providing an indicator provided with a first display portion displaying the operation of the measurement assisting unit and a second display portion displaying the operation of the sensor portion, it is possible to easily grasp the positions at which the measurement assisting unit and the sensor portion exist in each state by visual observation, for example, in the case where the measurement is not started due to insufficient pressing of the measurement assisting unit and the sensor portion, it is possible to easily make the user recognize the reason for the measurement not being started (insufficient pressing). Further, since the first display portion and the second display portion mechanically operate in conjunction with the measurement assisting unit and the sensor portion, it also has the advantages of simple structure, no need for a power source, and extremely high reliability.

[0033] In the skin property measuring device of the present application, preferably, the indicator is configured such that the sliding direction and the sliding amount of the first display portion coincide with the sliding direction and the sliding amount of the sliding portion of the measurement assisting unit, and is configured such that the sliding direction and the sliding amount of the second display portion coincide with the sliding direction and the sliding amount of the sensor portion.

[0034] Further, in the skin property measuring device of the present application, it is preferable that the indicator be configured such that the first display portion has a first area composed of a first display color, pattern, or combination thereof indicating that the cover portion is present in the first position with respect to the frame, and a second area composed of a second display color, pattern, or combination thereof indicating that the cover portion is present in the second position with respect to the frame, and such that the second display portion has a third area composed of a third display color, pattern, or combination thereof indicating that the sensor portion is present in the third position with respect to the frame, and a fourth area composed of a fourth display color, pattern, or combination thereof indicating that the sensor portion is present in the fourth position with respect to the frame.

[0035] Further, in the skin property measuring device of the present application, it is preferable that the indicator be configured such that the first display portion has a first area composed of a first display color, pattern, or combination thereof indicating that the cover portion is present in the first position with respect to the frame, and a second area composed of a second display color, pattern, or combination thereof indicating that the cover portion is present in the second position with respect to the frame, and such that the second display portion has a third area composed of a third display color, pattern, or combination thereof indicating that the sensor portion is present in the third position with respect to the frame, and a fourth area composed of a fourth display color, pattern, or combination thereof indicating that the sensor portion is present in the fourth position with respect to the frame.

[0036] According to the present application, since the first display portion directly linked to the measurement assisting unit and distinguished by at least two or more different colors, patterns, or combinations thereof, and the second display portion directly linked to the sensor portion and distinguished by at least two or more different colors, patterns, or combinations thereof, are displayed in one window portion, the plurality of states of the skin property measuring device can be easily recognized by the display of colors, patterns, and the like, and their combinations, and artificial measurement errors caused by, for example, poor pressing of the cover portion and the sensor portion of the measurement assisting unit can be more reliably prevented.

[0037] In particular, in the present application, in the case where the sensor portion is pushed obliquely with respect to the skin of the subject, the leading end portion of the sensor portion cannot come into contact with the skin of the subject, or at least cannot move to a state in which the switch is turned on, because the guide surface of the cover portion becomes an obstacle. Therefore, the display in the window portion does not advance to the combination of the second area and the fourth area, and the user can be accurately informed that the sensor portion is not pressed properly.

[0038] Further, in the skin property measuring device of the present application, it is preferable that the cover portion of the measurement assisting unit be transparent or translucent so that the contact state of the sensor portion and the skin of the subject inside the cover portion can be visually confirmed, in order to minimize the occurrence of the above-described artificial errors.

[0039] Inventive Effects

[0040] According to the present application, there is provided a skin property measuring device including: a frame; a base fixed to the inside of the frame; a sliding portion supported to the frame in a slidable manner; a sensor portion supported to the sliding portion in a slidable manner; a first force applying mechanism applying force to the sensor portion in a manner that the front end portion of the sensor portion is distanced from the sliding portion; a cover portion having a guide surface for pressing against the skin of a subject and an opening portion provided in the guide surface for the front end portion of the sensor portion to pass through, the cover portion being detachably coupled to the sliding portion; and a second force applying mechanism applying force to the sliding portion in a manner that the guide surface is distanced from the frame, characterized in that the skin property measuring device is configured such that, as the guide surface is pressed by the skin of the subject, initially only the guide surface moves toward the frame, and then the guide surface and the front end portion of the sensor portion move toward the frame.

[0041] According to the present application, before the front end portion of the sensor portion comes into contact with the skin of the subject, the guide surface having a larger contact area than the front end portion comes into contact with the skin of the subject, so that first the cover portion is guided in a manner that the angle of pressing against the surface of the skin of the subject becomes a right angle, and then the front end portion of the sensor portion is also guided by the cover portion in a manner that the angle of pressing against the surface of the skin of the subject becomes a right angle, as a result of which the skin property of the subject can be measured in an appropriate contact manner.

[0042] Further, according to the present application, the skin of the subject exposed in the opening portion of the guide surface is fixed by the edge portion of the opening portion, so that the front end portion of the sensor portion can come into contact with the skin of the subject which is kept at a uniform and constant elastic force, independently of the amount of pressing (pressing force) of the guide surface, and the measurement accuracy of the skin property can be improved.

[0043] In the skin property measuring device of the present application, an indicator for displaying the relative positions of the cover portion and the sensor portion of the measurement assisting unit with respect to the frame can be provided on the side surface portion of the frame, and the indicator can include: a window portion formed on the side surface portion of the frame; a first display portion supported in the inside of the window portion in a slidable manner and coupled to the sliding portion of the measurement assisting unit; and a second display portion supported in the inside of the window portion in a slidable manner and coupled to the sensor portion.

[0044] According to the present application, by providing an indicator having a first display portion displaying the operation of the measurement assisting unit (the cover portion and the sliding portion) and a second display portion displaying the operation of the sensor portion, it is possible to easily grasp by visual observation the positions at which the measurement assisting unit and the sensor portion exist in which state, and to prevent artificial measurement errors caused by poor pressing of the cover portion of the measurement assisting unit and the sensor portion, etc. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a perspective view showing the entire skin condition measuring device of an embodiment of the present application.

[0046] Figure 2 is a sectional view partially showing the inside of the skin condition measuring device of an embodiment of the present application, (a) is a front sectional view of the skin condition measuring device, (b) is a side sectional view of the skin condition measuring device, and (c) is a bottom sectional view of the skin condition measuring device.

[0047] Figure 3 is a sectional view showing the operation state of the sensor section of the skin condition measuring device of an embodiment of the present application, (a) is a sectional view in which the sensor section is in a standby state, (b) and (c) are sectional views in which the sensor section is in a contact state, and (d) is a sectional view in which the sensor section is in a measurement start state.

[0048] Figure 4 is a sectional view showing the operation state of the indicator of the skin condition measuring device of an embodiment of the present application, (a) is a sectional view in which the sensor section is in a standby state, (b) is a sectional view in which the sensor section is in a contact state, and (c) is a sectional view in which the sensor section is in a measurement start state. DETAILED DESCRIPTION

[0049] Hereinafter, a skin condition measuring device of an embodiment of the present application will be described in detail with reference to the drawings. Note that the present application is not limited to the following examples, and various modifications can be made without departing from the technical idea of the present application.

[0050] EXAMPLE

[0051] < SKIN CONDITION MEASURING DEVICE >

[0052] In Figure 1 , a perspective view showing the entire skin condition measuring device 1 of an embodiment of the present application is shown. In addition, in Figure 2 , a sectional view partially showing the inside of the skin condition measuring device 1 of an embodiment of the present application is shown, Figure 2 (a) of is a front sectional view of the skin condition measuring device 1, Figure 2 (b) of is a side sectional view of the skin condition measuring device 1, Figure 2 (c) of is a bottom sectional view of the skin condition measuring device 1. Hereinafter, the structure and operation mode of the skin condition measuring device 1 of an embodiment of the present application will be described. Note that in the present application specification, "upper" of upper portion, upper end, and the like indicates the direction in which the skin condition measuring device 1 is shown in the drawings. Figure 2In the drawings, “lower” in the upper side, lower part, lower end, etc. refers to the upper side of the skin condition measuring device 1. Figure 2 The lower side of the accompanying drawings.

[0053] [Frame]

[0054] As reference Figure 1 、 2 As will be understood, the skin condition measurement device 1 of this embodiment is a handheld measurement device sized to be operated with one hand. It comprises a housing 2 with a racetrack-shaped cross-section, one end open and a silicone cover 21 with a power switch attached to the other end. A base 20 is secured within the housing 2. Furthermore, a control board 22, which carries an IC chip and other components for controlling the measurements performed by the skin condition measurement device 1, and a power source 23, such as a battery, are mounted therein. The power source 23, such as a battery, can be replaced by removing a portion of the side of the housing 2. It should be noted that the cross-sectional shape of the housing 2 does not necessarily have to be a racetrack; as long as it can accommodate the necessary components, such as the control board 22 and the power source 23, and can be operated with one hand, it may also have other common shapes, such as a rectangle, polygon, circle, or oval.

[0055] [base]

[0056] The base 20 may be an independent component separated from the frame 2, or may be a component formed integrally with the frame 2. The base 20 includes a first flange portion 200 and a second cylindrical portion 201 extending downward from the first flange portion 200 and being entirely or partially hollow or solid. The second cylindrical portion 201 is mounted inside the frame 2 so that its central axis b coincides with the central axis (not shown) of the frame 2. In addition, a second flange portion 202 for pressing the first biasing mechanism 6, which is composed of a coil spring or the like and will be described later, is formed at the lower end of the second cylindrical portion 201. It should be noted that the second cylindrical portion 201 does not necessarily have to be cylindrical. It may also be prismatic, elliptical, or the like as long as it is suitable for supporting the second biasing mechanism 7, which is composed of a coil spring or the like and will be described later.

[0057] [Sliding part]

[0058] A sliding portion 31 is slidably mounted on the inner circumferential surface of the frame 2, with a portion thereof protruding outward from the opening of the frame 2. A circular opening 310 is formed at one end of the sliding portion 31 for slidably passing the second cylindrical portion 201 of the base 20, and a track-shaped opening 311 is formed at the other end for slidably passing the sensor portion 4, described later.

[0059] [Hood]

[0060] The cover portion 30 is attached to the portion of the slide portion 31 that protrudes outward from the opening portion of the frame body 2. In addition, the cover portion 30 and the slide portion 31 are detachably connected by a small circular recess 302 provided on the inner circumferential surface of the opening end of the cover portion 30 and a small semispherical protrusion 312 provided on the side surface of the slide portion 31 that protrudes outward, and are integrated to constitute the measurement assisting unit 3 (see FIG. 2). Figure 1 ).

[0061] The cover portion 30 forms a cylindrical body that is open at the end portion on the side where it is attached to the slide portion 31 and has a flat raceway-shaped guide surface 300 at the end portion on the side where it is pressed against the skin of the subject. In addition, a small raceway-shaped opening portion 301 for the front end portion 40 of the sensor portion 4 to pass through is formed in the center of the guide surface 300. Note that the shape of the guide surface 300 is not necessarily a raceway shape, and can be a rectangular shape, a polygonal shape, a circular shape, an elliptical shape, or another general shape as long as it can ensure an area suitable for guiding the pressing angle of the cover portion 30 with respect to the surface of the skin of the subject to be a right angle by being pressed against the skin of the subject.

[0062] In addition, in the present embodiment, the cover portion 30 of the measurement assisting unit 3 is formed of a transparent or translucent material so that the sensor portion 4 and the contact state of the sensor portion 4 with the skin of the subject and the like inside the cover portion 30 can be visually confirmed, but it is not necessarily transparent or translucent and can be opaque.

[0063] [Sensor portion]

[0064] The sensor portion 4 is supported to the opening portion 311 of the slide portion 31 in a slidable manner inside the cover portion 30 of the measurement assisting unit 3. The sensor portion 4 has a first cylindrical portion 42 that is hollow or solid in whole or in part at the end portion on the side where it is attached to the base portion 20 and has a flat raceway-shaped sensing surface at the front end portion 40 on the side where it is pressed against the skin of the subject, and has a columnar shape with a raceway-shaped cross section as a whole. Note that the first cylindrical portion 42 mainly functions to support the first biasing mechanism 6 described later, and thus is not necessarily cylindrical, and can be a prismatic shape, an elliptical cylindrical shape, or the like as long as it is suitable for supporting the first biasing mechanism 6 and can be fitted to the second cylindrical portion 201 of the base portion 20 in a slidable manner.

[0065] In addition, in the skin property measuring device 1 of the present embodiment, the switch 5 is attached to the base portion 20 of the frame body 2, and the front end portion 40 of the sensor portion 4 is moved to a predetermined position toward the base portion 20 of the frame body 2, and the rear end portion of the sensor portion 4 blocks the light of the light-operated switch or presses the switch, so that the switch 5 is brought to an on state.

[0066] In the skin property measuring device 1 of the present embodiment, in order to measure the water content of the skin of the subject, electrodes 41 are provided in a comb shape at the front end portion 40 of the sensor portion 4 (refer to Figure 2 (c) of FIG. 1. The electrodes 41 are composed of a pair of positive and negative electrodes, and in the present embodiment, three electrodes 41 are arranged in a horizontal row at the front end portion 40 of the sensor portion 4. Therefore, in the present embodiment, by enlarging the area of the electrodes 41, the influence of the difference in the water content of the skin of the subject in a local area is reduced, and the measurement accuracy of the water content is improved. In addition, the influence of the spots of the skin properties caused by the difference in the measurement site can also be reduced by measuring the water content of the skin of three points of the subject and averaging, and the measurement accuracy of the water content is improved.

[0067] The skin property measuring device 1 of the present embodiment is suitable for a measuring device that requires accurate measurement of the pressing angle and the pressing force when measuring the properties of the skin (the skin), and the measurement object is not limited to the water content of the skin. For example, although not shown, the skin property measuring device 1 of the present embodiment can also be provided with a vibration detection element at the sensor portion 4, the front end portion 40 of the sensor portion 4 that vibrates at a predetermined frequency by the sensor portion 4 is brought into contact with the skin (the skin) of the subject, the vibration frequencies before and after the contact are detected by the vibration detection element, respectively, and then the detected frequencies are amplified by the control substrate, whereby the elasticity of the skin (the skin) can be measured based on the difference in the frequencies before and after the contact with the skin (the skin).

[0068] [First pressing force applying mechanism]

[0069] In the skin property measuring device 1 of the present embodiment, the first cylindrical portion 42 of the sensor portion 4 is inserted inside the second cylindrical portion 201 of the base portion 20 in a slidable manner. In addition, the skin property measuring device 1 of the present embodiment is provided with a first pressing force applying mechanism 6 that applies a pressing force to the front end portion 40 of the sensor portion 4 in such a manner that the front end portion 40 of the sensor portion 4 is distanced from the sliding portion 31. In the present embodiment, a first coil spring 6 is used as the first pressing force applying mechanism 6, and the first coil spring 6 is disposed between the second flange portion 202 of the second cylindrical portion 201 of the base portion 20 and the upper end portion of the sensor portion 4 and around the first cylindrical portion 42 of the sensor portion 4, and is supported by the sensor portion 4 so as to be pressable.

[0070] Note that, although not shown, in the present embodiment, by omitting the second flange portion 202 of the second cylindrical portion 201, it is also possible to externally insert the first cylindrical portion 42 of the sensor portion 4 to the outside of the second cylindrical portion 201 of the base portion 20 in a slidable manner. In this case, if the first coil spring 6 is disposed between the lower end portion of the second cylindrical portion 201 of the base portion 20 and the upper end portion inside the first cylindrical portion 42 of the sensor portion 4 and in the first cylindrical portion 42, it can be supported by the sensor portion 4 so as to be pressable.

[0071] [Second force applying mechanism]

[0072] In the skin property measuring device 1 of the present embodiment, the second cylindrical portion 201 of the base portion 20 is slidably passed through the opening portion 310 of the upper portion of the sliding portion 31. In addition, the skin property measuring device 1 of the present embodiment is provided with a second force applying mechanism 7 that applies a force to the sliding portion 31 of the measurement assisting unit 3 in such a manner that the guide surface 300 of the cover portion 30 of the measurement assisting unit 3 is distanced from the frame 2. In the present embodiment, a second coil spring 7 is used as the second force applying mechanism 7, and the second coil spring 7 is disposed between the first flange portion 200 of the second cylindrical portion 201 of the base portion 20 and the upper end portion of the sliding portion 31 of the measurement assisting unit 3 and around the second cylindrical portion 201 of the base portion 20, and is supported by the sliding portion 31 of the measurement assisting unit 3 so as to be able to be pressed.

[0073] In the skin property measuring device 1 of the present embodiment, in order to be able to simply support and compactly dispose the first coil spring 6 and the second coil spring 7, the central axis a of the first cylindrical portion 42 of the sensor portion 4 and the central axis b of the second cylindrical portion 201 of the base portion 20 are disposed on the same axis, and the central axis c of the opening portion 310 of the upper portion of the sliding portion 31 and the central axis b of the second cylindrical portion 201 of the base portion 20 and the central axis a of the first cylindrical portion 42 of the sensor portion 4 are disposed on the same axis.

[0074] Therefore, the central axis (not shown) of the first coil spring 6 that is fitted around the first cylindrical portion 42 is also disposed on the same axis as the central axis (not shown) of the second coil spring 7 that is fitted around the second cylindrical portion 201, and it is possible to house the skin property measuring device 1 in an extremely compact size of a hand-held size.

[0075] Note that, in the present embodiment, the materials used for the frame 2, the base portion 20, the cover portion 30, the sliding portion 31, and the sensor portion 4 are not particularly limited, and a resin material, a metal material, or a composite material made by combining them can be used, but from the aspects of light weight and excellent moldability and excellent insulation, it is preferable to use a hard plastic material. In addition, in the present embodiment, the materials used for the first force applying mechanism 6 and the second force applying mechanism 7 are not particularly limited, and a metal material having elasticity or a resin material having elasticity, or a composite material made by combining them can be used, but from the aspect of excellent durability, it is preferable to use a metal material having elasticity.

[0076] [Action of skin property measuring device]

[0077] In Figure 3 , a cross-sectional view showing the action state of the sensor portion 4 of the skin property measuring device 1 of an embodiment of the present application is shown, Figure 3(a) is a cross-sectional view of the sensor unit 4 in a standby state. Figure 3 (b) and Figure 3 (c) is a cross-sectional view of the sensor portion 4 in a contact state. Figure 3 (d) is a cross-sectional view of the sensor unit 4 in the measurement start state. Next, the operation of the skin property measurement device 1 according to one embodiment of the present invention will be described.

[0078] (1) Standby mode

[0079] like Figure 3 As shown in (a), in the skin condition measurement device 1 of this embodiment, in the unloaded state, that is, before the guide surface 300 of the cover 30 of the measurement auxiliary unit 3 is pressed against the subject's skin 9, the tip 40 of the sensor unit 4 is biased by the first biasing mechanism (first coil spring) 6 toward the position furthest from the base 20 of the housing 2 and the sliding portion 31 of the measurement auxiliary unit 3. The guide surface 300 of the cover 30 is also biased by the second biasing mechanism (second coil spring) 7 toward the position furthest from the base 20 of the housing 2. At this time, the tip 40 of the sensor unit 4, which includes the electrodes 41, is held within the cover 30. Therefore, the tip 40 of the sensor unit 4 is protected by the cover 30 from damage, etc., and malfunctions caused by unintended contact with the tip 40 are prevented.

[0080] (2) Contact status with skin - 1

[0081] like Figure 3 As shown in (b), in the skin property measuring device 1 of this embodiment, when the guide surface 300 of the cover portion 30 of the measurement auxiliary unit 3 is pushed against the skin 9 of the person being measured, initially only the guide surface 300 moves toward the base 20 of the frame 2, and then the guide surface 300 and the front end portion 40 of the sensor portion 4 move toward the base 20 of the frame 2.

[0082] As a result, in the skin condition measurement device 1 of this embodiment, before the tip portion 40 of the sensor unit 4 contacts the subject's skin 9, the guide surface 300, which has a larger contact area than the tip portion 40, contacts the subject's skin 9. Therefore, the cover portion 30 of the measurement auxiliary unit 3 is first guided so that the pressing angle relative to the subject's skin surface is perpendicular. Subsequently, the tip portion 40 of the sensor unit 4, also guided by the cover portion 30 of the measurement auxiliary unit 3 at a perpendicular pressing angle relative to the subject's skin surface, contacts the subject's skin 9. Consequently, the skin condition measurement device 1 of this embodiment can measure the subject's skin condition (skin moisture content) at an appropriate contact angle.

[0083] (3) Contact status with skin - 2

[0084] In the skin condition measuring apparatus 1 of the present embodiment, after the front end portion 40 of the sensor portion 4 contacts the skin 9 of the subject, in other words, after the guide surface 300 of the cover portion 30 of the measurement assisting unit 3 is pushed against the skin 9 of the subject and the guide surface 300 and the front end portion 40 of the sensor portion 4 move toward the base portion 20 of the frame 2, the pressing force per unit area generated at the front end portion 40 of the sensor portion 4 is set to be the same as or greater than the pressing force per unit area generated at the guide surface 300.

[0085] Therefore, as shown in (c) of FIG. 6, after the front end portion 40 of the sensor portion 4 contacts the skin 9 of the subject, if the guide surface 300 of the cover portion 30 of the measurement assisting unit 3 and the front end portion 40 of the sensor portion 4 are further pushed against the skin 9 of the subject, the sliding portion 31 of the measurement assisting unit 3 moves toward the base portion 20 of the frame 2 first, and reaches the sliding limit 313 and cannot move any more. As a result, after the sliding portion 31 reaches the sliding limit 313, only the front end portion 40 of the sensor portion 4 moves toward the base portion 20 of the frame 2. Figure 3

[0086] Thus, after the front end portion 40 of the sensor portion 4 contacts the skin 9 of the subject and the guide surface 300 of the cover portion 30 of the measurement assisting unit 3 and the front end portion 40 of the sensor portion 4 move toward the base portion 20 of the frame 2, the skin 9 of the subject exposed in the opening portion 301 of the guide surface 300 is fixed by the edge portion of the opening portion 301, and thus the elastic force is kept uniform and constant. Therefore, the front end portion 40 of the sensor portion 4 can contact the skin 9 of the subject, which is kept with the uniform and constant elastic force, preferentially, and the skin condition (moisture content of the skin) can be measured with high accuracy, independently of the amount of pressing (pressing force) of the guide surface 300.

[0087] (4) Measurement start state

[0088] As shown in (d) of FIG. 6, in the skin condition measuring apparatus 1 of the present embodiment, after the sliding portion 31 of the measurement assisting unit 3 reaches the sliding limit 313, when the front end portion 40 of the sensor portion 4 is further pushed against the skin 9 of the subject, the sensor portion 4 slightly moves toward the base portion 20 of the frame 2 and the sliding portion 31 of the measurement assisting unit 3, and at substantially the same time as reaching the sliding limit, the rear end portion of the sensor portion 4 blocks the light of the light-operated switch installed to the base portion 20 of the frame 2, or the switch 5 becomes in the state of being turned on by the push switch, and the measurement of the skin condition (moisture content of the skin) of the subject by the skin condition measuring apparatus 1 is started. Figure 3

[0089] ​​As a result, in the skin property measuring device 1 of the present embodiment, the tip end portion 40 of the sensor portion 4 is guided in a manner that the pressing angle with respect to the skin surface of the subject becomes a right angle, and the switch 5 becomes an on state in a state where the skin 9 of the subject is kept uniform and constant in elasticity, and the measurement is started, so that the skin property (moisture content of the skin) can be accurately and stably measured. Note that the measurement object of the skin property measuring device 1 of the present embodiment is not limited to the skin of a human being, and the moisture content and the like of the skin of an animal can also be measured.

[0090] <Indicator for measuring device>

[0091] In Figure 4 , a cross-sectional view showing the operation state of the indicator 8 of the skin property measuring device 1 of the present embodiment is shown, Figure 4 (a) is a cross-sectional view in which the sensor portion 4 is in a standby state, Figure 4 (b) is a cross-sectional view in which the sensor portion 4 is in a contact state, Figure 4 (c) is a cross-sectional view in which the sensor portion 4 is in a measurement start state. Hereinafter, the structure and operation mode of the indicator 8 of the skin property measuring device 1 of the present embodiment will be described with reference to Figure 1 , 2 and 4.

[0092] [Structure of indicator]

[0093] As understood with reference to Figure 2 , the skin property measuring device 1 of the present embodiment is provided with an indicator 8 for displaying the relative position of the measurement assisting unit 3 (the cover portion 30 and the sensor portion 4) with respect to the frame 2 to the side surface portion of the frame 2. The indicator 8 is provided with a window portion 80 which is opened to the side surface portion of the frame 2, a first display portion 81 which is supported inside the window portion 80 in a slidable manner, and a second display portion 82 which is adjacent to the first display portion 81 and is supported so as to be slidable in the same direction as the first display portion 81.

[0094] The first display portion 81 is an elongated rod-shaped member which is directly and integrally connected to the sliding portion 31 of the measurement assisting unit 3 via a first connecting member 810. Therefore, in the present embodiment, the sliding direction and the sliding amount of the first display portion 81 are configured to coincide with the sliding direction and the sliding amount of the cover portion 30 and the sliding portion 31 of the measurement assisting unit 3.

[0095] In addition, in the first display portion 81, the surface on the side exposed from the window portion 80 is color-distinguished into: a first colored region 811 colored in a first display color indicating a position (first position) at which the cover portion 30 of the measurement assisting unit 3 is present in a standby state with respect to the frame 2; and a second colored region 812 colored in a second display color indicating a position (second position) at which the cover portion 30 of the measurement assisting unit 3 is present in a state reaching the sliding limit 313 with respect to the frame 2. Note that, depending on the characteristics of the measurement device to which the indicator 8 is applied, in a case where there are three or more positions in a state that needs to be displayed, the first display portion 81 can be color-distinguished according to the number of positions. In addition, the type distinction of the first and second regions can use not only display colors but also patterns or a combination thereof.

[0096] In addition, the first display portion 81 does not necessarily have to be directly and integrally connected to the sliding portion 31, and can be indirectly connected, for example, by using another connection member (not shown) that utilizes the principle of a lever, so as to amplify or reduce the sliding amount of the measurement assisting unit 3. In addition, the first display portion 81 can be a separate member independent of the cover portion 30 and the sliding portion 31, as long as it is linked to the measurement assisting unit 3.

[0097] The second display portion 82 is also an elongated rod-shaped member, and is directly and integrally connected to the sensor portion 4 via a second connection member 820. Therefore, in the present embodiment, the sliding direction and the sliding amount of the second display portion 82 are configured to coincide with the sliding direction and the sliding amount of the sensor portion 4.

[0098] In addition, in the second display portion 82, the surface on the side exposed from the window portion 80 is color-distinguished into: a third colored region 821 colored in a third display color indicating a position (third position) at which the sensor portion 4 is present in a standby state with respect to the frame 2; and a fourth colored region 822 colored in a fourth display color indicating a position (fourth position) at which the sensor portion 4 is present in a measurement start state with respect to the frame 2. Note that, depending on the characteristics of the measurement device to which the indicator 8 is applied, in a case where there are three or more positions in a state that needs to be displayed, the second display portion 82 can be color-distinguished according to the number of positions. In addition, the type distinction of the third and fourth regions can use not only display colors but also patterns or a combination thereof.

[0099] In addition, the second display portion 82 does not necessarily have to be directly and integrally connected to the sensor portion 4, and can be indirectly connected, for example, by using another connection member (not shown) that utilizes the principle of a lever, so as to amplify or reduce the sliding amount of the sensor portion 4. In addition, the second display portion 82 can be a separate member independent of the sensor portion 4, as long as it is linked to the sensor portion 4.

[0100] The indicator 8 of this embodiment is not limited to the device 1 for measuring skin properties such as moisture content and elasticity. It can also be applied to other measuring devices as long as two or more movable parts are separately and independently movable, such as the measurement auxiliary unit 3 (cover 30 and slider 31) and the sensor unit 4. Furthermore, if there are three or more movable parts, a display unit can be provided according to the number of movable parts.

[0101] As described above, the indicator 8 of this embodiment is applicable to any measuring device that includes at least the frame 2 , the measurement auxiliary unit 3 slidably supported by the frame 2 , and the sensor section 4 slidably supported by the measurement auxiliary unit 3 .

[0102] It should be noted that in this embodiment, the materials used for the first display portion 81, the first connecting member 810, the second display portion 82, and the second connecting member 820 of the indicator 8 are not particularly limited. Resin materials, metal materials, or composite materials composed of these materials can be used, but from the perspective of light weight and excellent formability, it is preferred to use hard plastic materials.

[0103] [Indicator Movement]

[0104] (1) Standby mode

[0105] like Figure 4 As shown in (a), in the skin property measurement device 1 of this embodiment, in the unloaded state, that is, before the cover 30 of the measurement auxiliary unit 3 is pressed against the subject's skin 9, the cover 30 of the measurement auxiliary unit 3 is located at the first position furthest from the housing 2. The first display unit 81 connected to the sliding portion 31 of the measurement auxiliary unit 3 displays a first colored area 811 in a first display color in the window 80, indicating that the cover 30 of the measurement auxiliary unit 3 is located at the first position. Meanwhile, the sensor unit 4 is located at the third position furthest from the housing 2, and the second display unit 82 connected to the sensor unit 4 displays a third colored area 821 in a third display color in the window 80, indicating that the sensor unit 4 is located at the third position.

[0106] As a result, a combination of the first colored area 811 and the third colored area 821 indicating that the sensor unit 4 is in the standby state is displayed in the window 80 of the skin property measurement device 1, so the user can easily grasp that the sensor unit 4 is in the standby state by visual inspection.

[0107] (2) Contact status with skin

[0108] like Figure 4As shown in (b) of FIG. 2 , in the skin condition measurement device 1 of this embodiment, when the cover 30 of the measurement assisting unit 3 is further pressed against the subject's skin 9, the sliding portion 31 of the measurement assisting unit 3 moves toward the base 20 of the housing 2 and reaches the second position, which serves as the sliding limit 313. Consequently, the first display portion 81 coupled to the sliding portion 31 of the measurement assisting unit 3 displays a second colored area 812 in the second display color in the window portion 80, indicating that the cover 30 of the measurement assisting unit 3 has reached the second position.

[0109] Meanwhile, the sensor unit 4 is held at the third position, furthest from the housing 2, and the cover 30 of the measurement assisting unit 3 is retracted relative to the sensor unit 4, thereby coming into contact with the subject's skin 9. Therefore, the second display unit 82 connected to the sensor unit 4 displays a third colored area 821 in the third display color in the window 80, indicating that the sensor unit 4 is held at the third position.

[0110] As a result, a combination of a second colored area 812 and a third colored area 821 indicating that the sensor part 4 is in contact with the skin 9 of the person being measured is displayed in the window part 80 of the skin property measuring device 1, so that the user can easily and accurately grasp by visual inspection that the sensor part 4 is in contact but the measurement has not started.

[0111] (3) Measurement start status

[0112] like Figure 4 As shown in (c), in the skin property measuring device 1 of the present embodiment, when the cover portion 30 of the measurement auxiliary unit 3 is further pushed against the skin 9 of the person being measured, the sliding portion 31 of the measurement auxiliary unit 3 is maintained at the second position serving as the sliding limit 313, so that the first display portion 81 connected to the sliding portion 31 of the measurement auxiliary unit 3 displays a second colored area 812 of the second display color in the window portion 80 indicating that the cover portion 30 of the measurement auxiliary unit 3 is maintained at the second position.

[0113] Meanwhile, the sensor unit 4 moves toward the base 20 of the housing 2. At approximately the same time as it reaches the fourth position, which serves as the sliding limit, the rear end of the sensor unit 4 blocks light from the light-operated switch mounted on the base 20 of the housing 2, or the switch is pressed, turning the switch 5 on. Consequently, the second display unit 82 connected to the sensor unit 4 displays a fourth colored area 822 in the fourth display color in the window 80, indicating that the sensor unit 4 has reached the fourth position and the switch 5 is turned on.

[0114] As a result, the second colored area 812 and the fourth colored area 822, which represent that the measurement of the skin condition (moisture content of the skin) of the subject has started by the sensor portion 4 making the switch 5 in the on state, are displayed in combination in the window portion 80 of the skin condition measuring device 1, so the user can also easily and accurately grasp by sight that the measurement has started with the sensor portion 4 in contact with the skin 9 of the subject. Note that in the case where the second display portion 83 in the window portion 80 simultaneously displays the third colored area 821 and the fourth colored area 822 (the boundary between the third colored area 821 and the fourth colored area 822), the user can easily grasp that the sensor portion 4 has not been sufficiently pressed into the correct position, the appropriate pressing force.

[0115] Thus, the indicator 8 for a skin condition measuring device of an embodiment of the present application has the first display portion 81 that displays the operation of the measurement assisting unit 3 and the second display portion 82 that displays the operation of the sensor portion 4, so it is possible to easily and accurately grasp by sight the position at which each of the measurement assisting unit 3 and the sensor portion 4 is present, and it is possible to prevent artificial measurement errors caused by, for example, the cap portion 30 of the measurement assisting unit 3 and the sensor portion 4 not being pressed in properly. For example, in the case where the measurement has not started due to the measurement assisting unit 3 and the sensor portion 4 not being pressed in sufficiently, the user can easily recognize the reason for the measurement not starting (sufficient pressing in not being performed). In addition, the first display portion 81 and the second display portion 82 mechanically operate in conjunction with the measurement assisting unit 3 and the sensor portion 4, so it also has the advantages of a simple structure, not requiring a power source, and extremely high reliability.

[0116] Furthermore, the indicator 8 for a skin condition measuring device according to the present embodiment displays the first display portion 81 that is directly linked to the measurement assisting unit 3 and is color-distinguished in at least two or more different colors, and the second display portion 82 that is directly linked to the sensor portion 4 and is color-distinguished in at least two or more different colors, in one window portion 80, so it is possible to easily recognize the plurality of states of the skin condition measuring device 1 by the display of the colors and their combinations, and it is possible to more reliably prevent artificial measurement errors caused by, for example, the cap portion 30 of the measurement assisting unit 3 and the sensor portion 4 not being pressed in properly.

[0117] In particular, in the indicator 8 of the present embodiment, in the case where the sensor portion 4 is pushed against the skin 9 of the subject obliquely, the guide surface 300 of the cap portion 30 of the measurement assisting unit 3 becomes an obstacle and the front end portion 40 of the sensor portion 4 cannot come into contact with the skin 9 of the subject, or at least cannot move to a state in which the switch 5 is in the on state. Thus, the display in the window portion 80 does not advance to the combination of the second colored area 812 and the fourth colored area 822, and it is possible to accurately inform the user that the sensor portion 4 is not being pressed in properly.

[0118] BRIEF DESCRIPTION OF DRAWINGS

[0119] 1 … skin condition measuring device

[0120] 2 … frame

[0121] 20 … base

[0122] 200 … first flange portion

[0123] 201 … second cylindrical portion

[0124] 202 … second flange portion

[0125] 21 … cover portion

[0126] 22 … control substrate

[0127] 23 … power supply

[0128] 3 … measurement assisting unit

[0129] 30 … cover portion

[0130] 300 … guide surface

[0131] 301 … opening portion

[0132] 302 … recessed portion

[0133] 31 … sliding portion

[0134] 310, 311 … opening portion

[0135] 312 … protruding portion

[0136] 313 … sliding limit

[0137] 4 … sensor portion

[0138] 40 … front end portion

[0139] 41 … electrode

[0140] 42 … first cylindrical portion

[0141] 5 … switch

[0142] 6 … first urging mechanism (first coil spring)

[0143] 7 … second urging mechanism (second coil spring)

[0144] 8 … indicator

[0145] 80 … window portion

[0146] 81 … first display portion

[0147] 810 … first link member

[0148] 811 … first colored region

[0149] 812 … second colored region

[0150] 82 … second display portion

[0151] 820 … second connecting member

[0152] 821 … third colored region

[0153] 822 … fourth colored region

[0154] 9 … subject's skin (skin)

[0155] a … central axis of first cylindrical portion

[0156] b … central axis of second cylindrical portion

[0157] c … central axis of opening portion

Claims

1. A skin property measuring device comprising: frame; a base fixed to the interior of the frame; a sliding portion slidably supported on the frame and the base; a sensor portion slidably supported on the sliding portion; a first urging mechanism disposed between the base portion and the sensor portion and urging the sensor portion so that a front end portion of the sensor portion moves away from the sliding portion; a cover portion having a guide surface for pressing against the skin of a person to be measured and an opening disposed in the guide surface for allowing the front end portion of the sensor portion to enter and exit, and the cover portion being detachably connected to the sliding portion; as well as a second urging mechanism disposed between the base and the sliding portion to urge the sliding portion so that the guide surface is away from the frame; It is characterized in that The skin property measuring device is composed of: As the guide surface is pressed against the skin of the person being measured, initially only the guide surface moves toward the base portion of the housing, and then the guide surface and the distal end portion of the sensor portion move toward the base portion of the housing.

2. The skin property measuring device according to claim 1, wherein The skin property measuring device is composed of: As the guide surface is pressed by the skin of the person being measured, after the guide surface and the tip of the sensor unit move toward the base of the housing, only the tip of the sensor unit further moves toward the base of the housing.

3. The skin property measuring device according to claim 2, wherein: The skin property measuring device is composed of: As the guide surface is pressed by the skin of the person being measured, after the guide surface and the front end portion of the sensor portion move toward the base portion of the frame, the pressing force per unit area generated at the front end portion of the sensor portion is the same as or greater than the pressing force per unit area generated at the guide surface.

4. The skin property measuring device according to claim 3, wherein: A switch is mounted on the base. The front end of the sensor portion moves toward the base of the frame to a predetermined position, whereby the rear end of the sensor portion turns on the switch to start measuring the skin condition of the subject by the skin condition measuring device.

5. The skin property measuring device according to claim 1, wherein The sensor portion has a first cylindrical portion in sliding contact with the base portion, the base portion has a second cylindrical portion in sliding contact with the sliding portion, and The central axis of the first cylindrical portion and the central axis of the second cylindrical portion are coaxially arranged.

6. The skin property measuring device according to claim 5, wherein: The sliding portion has an opening portion that is in sliding contact with the sensor portion, and The central axis of the opening portion and the central axis of the first cylindrical portion are coaxially arranged.

7. The skin property measuring device according to claim 1, wherein The first urging mechanism is composed of a first coil spring, the second urging mechanism is composed of a second coil spring, and The central axis of the first coil spring and the central axis of the second coil spring are coaxially arranged.

8. The skin property measuring device according to claim 1, wherein The front end portion of the sensor portion includes an electrode for measuring the moisture content of the skin of a subject.

9. The skin property measuring device according to claim 8, wherein The electrodes are arranged in plurality.

10. The skin property measurement device according to any one of claims 1 to 9, wherein The housing includes, on a side surface thereof, an indicator for displaying relative positions of the cover portion and the sensor portion with respect to the housing.

11. The skin property measuring device according to claim 10, wherein The indicator has: a window portion formed on a side surface of the frame; a first display portion slidably supported within the window portion and connected to the sliding portion; as well as The second display portion is slidably supported within the window portion and is connected to the sensor portion.

12. The skin property measuring device according to claim 11, wherein The indicator is configured as follows: The sliding direction and sliding amount of the first display portion are consistent with the sliding direction and sliding amount of the sliding portion, and The sliding direction and sliding amount of the second display portion are consistent with the sliding direction and sliding amount of the sensor portion.

13. The skin property measuring device according to claim 12, wherein: In the indicator, The first display portion includes a first area and a second area, the first area being composed of a first display color, pattern, or combination thereof indicating that the cover portion is in a first position relative to the frame, and the second area being composed of a second display color, pattern, or combination thereof indicating that the cover portion is in a second position relative to the frame, and The second display unit has a third area and a fourth area, the third area is composed of a third display color, pattern or a combination thereof indicating that the sensor unit is in a third position relative to the frame, and the fourth area is composed of a fourth display color, pattern or a combination thereof indicating that the sensor unit is in a fourth position relative to the frame.

14. The skin property measuring device according to claim 13, wherein The indicator is configured as follows: When the display in the window portion is a combination of the first area and the third area, it indicates that the sensor portion is in a standby state. When the display in the window portion is a combination of the second area and the third area, it indicates that the sensor portion is in a contact state, and When the display in the window portion is a combination of the second area and the fourth area, it indicates that the sensor portion is in a measurement start state.

15. The skin property measurement device according to any one of claims 1 to 9, wherein The cover portion is transparent or translucent so that the sensor portion inside the cover portion can be visually viewed.

Images