Analysis device member

Abstract

To provide an analysis device member which can suppress leakage of dripping liquid and can be reduced in a thickness.SOLUTION: An analysis device member 10 provided herein is used for an analysis device 1 for analyzing properties of liquid passing through a flow channel 2a of a tubular member 2 and comprises a substantially flat dripping part 11 formed to surround, in plan view, a reception port 2b of the tubular member positioned thereabove and configured to receive the dripping liquid, and a flow stop part 12 formed to surround the dripping part, the flow stop part having a greater contact angle with the liquid than the dripping part and being substantially coplanar with the dripping part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a component for an analyzer used in an analyzer for analyzing the characteristics of a liquid flowing through a flow path of a tubular member. [Background technology]

[0002] For example, Patent Document 1 listed below discloses a flow tube housing member used in an analysis device that analyzes the characteristics of a liquid flowing through a flow path. The flow tube housing member disclosed in Patent Document 1 has a main body portion provided with a concave liquid reservoir portion that opens upward and stores a test liquid, and a housing space portion that communicates with the liquid reservoir portion and houses a glass tube. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-081972 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the flow tube housing member described in Patent Document 1 above is configured to include a liquid reservoir section for storing the test liquid and a storage space section for housing the glass tube, and therefore tends to be bulky, and if it is made into a disposable member, the amount of waste tends to be large.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide an analytical device component that can be made thinner while preventing leakage of dripped liquid. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the analytical device component of the present invention is a component for an analytical device used in an analytical device that analyzes the characteristics of a liquid passing through a flow path of a tubular member, and is equipped with a dripping portion having a substantially flat surface onto which liquid is dripped, which is formed to surround the receiving port of the tubular member arranged on the upper side in a planar view, and a flow stopping portion formed to surround the periphery of the dripping portion, and is characterized in that the flow stopping portion has a larger contact angle with the liquid than the dripping portion and is substantially flush with the dripping portion.

[0007] In the above-mentioned analytical device member, a plurality of the flow stoppers may be provided at intervals in a direction away from the dripping portion. In the above-mentioned analytical device member, the flow stopper may surround the entire periphery of the dripping portion. In the above analytical device member, one of the dripping portion and the flow stopping portion may be a stepped portion formed in a stepped shape with respect to the other, and the step between them may be 0.05 mm to 1 mm. The above analytical device component may further include a first sheet body constituting one of the dripping portion and the flow stopping portion, and a second sheet body laminated above the first sheet body and constituting the other.

[0008] In addition, in order to achieve the above-mentioned object, another analytical device component of the present invention is a component for an analytical device used in an analytical device that analyzes the characteristics of a liquid passing through a flow path of a tubular member, and is characterized in that it comprises a dripping portion having a substantially flat surface onto which liquid is dripped, which is formed in a planar view to surround the receiving port of the tubular member arranged on the upper side, and a stepped portion which surrounds the periphery of the dripping portion and is formed in a stepped shape relative to the dripping portion. Effect of the Invention

[0009] Since the analytical device member of the present invention has the above-mentioned configuration, it is possible to suppress leakage of the dripped liquid while achieving a thin shape. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1A is a schematic perspective view showing an example of an analytical device member according to a first embodiment, and FIG. [Diagram 2] FIG. 2 is a block diagram illustrating an analysis device in which the analysis device member is used. [Diagram 3] 1A is an enlarged oblique view of the analytical device component, FIG. 1B is a schematic diagram for explaining the suppression of liquid flow at part X1 of FIG. 1A, and FIG. 1C is a schematic diagram for explaining the suppression of liquid flow at part X2 of FIG. 1A. [Figure 4] 5(a) to 5(f) are schematic plan views showing modified examples of the analyzer member of the first embodiment. [Diagram 5] 13(a) and (b) are schematic diagrams for explaining modified examples of the first embodiment, and (c) and (d) are schematic diagrams for explaining an analysis device member according to a second embodiment and its modified examples. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the analytical device member according to each embodiment will be described with reference to the drawings. Note that in some drawings, some of the detailed reference numerals attached to other drawings are omitted. 1 to 4 are diagrams showing an example and modified examples of an analytical device member according to the first embodiment, and an example of an analytical device in which the analytical device member is used.

[0012] The analytical device member 10 of the first embodiment is used in an analytical device 1 that analyzes the characteristics of a liquid passing through a flow path 2a of a tubular member 2, as shown in Figs. 1 and 2. The analytical device member 10 includes a dripping portion 11 that is formed to surround the receiving port 2b of the tubular member 2 arranged on the upper side in a plan view and has a substantially flat surface on which the liquid is dripped, and a flow stopper portion 12 that is formed to surround the periphery of the dripping portion 11. The flow stopper portion 12 has a larger contact angle with the liquid than the dripping portion 11 and is substantially flush with the dripping portion 11. With this configuration, when the liquid dripped onto the dripping portion 11 tries to spread toward the flow stopper portion 12 that is formed to surround the periphery of the dripping portion 11 and has a larger contact angle with the liquid than the dripping portion 11, the surface area is reduced by the cohesive energy at the boundary between the dripping portion 11 and the flow stopper portion 12, making it difficult for the liquid to spread. This makes it possible to suppress leakage of the liquid dripped onto the dripping portion 11 to the outside. Furthermore, since the flow stopper 12 is substantially flush with the dripping portion 11 having a substantially flat surface, the analytical device member 10 can be made thinner than in a configuration having a dripping portion having a concave bottom. The analytical device member 10 will be described in detail below. Note that the analytical device member 10 will be described based on a state in which the receiving port 2b of the tubular member 2 is disposed on the upper side thereof.

[0013] As shown in FIG. 2, the analysis device 1 is configured to analyze the liquid flowing in the flow path 2a of the tubular member 2 based on the moving distance and moving time, and calculate the viscosity of the liquid. The analysis device 1 includes a sensor unit 5. The sensor unit 5 includes a plurality of optical sensors 5b. The optical sensors 5b include a light-emitting element that emits light and a light-receiving element that receives the light. The optical sensors 5b are attached to the substrate 5a at intervals along the longitudinal direction of the tubular member 2, and detect the arrival of the liquid by the change in the intensity of the light received by the light-receiving element, irradiating light from the light-emitting element toward the flow path 2a. In the illustrated example, the sensor unit 5 is disposed on the upper side of the tubular member 2. The sensor unit 5 may be configured to include one or more image sensors instead of the plurality of optical sensors 5b.

[0014] The analysis device 1 includes a terminal device 6 including a computer or the like. The terminal device 6 includes a circuit section 7. The circuit section 7 includes a transmission / reception circuit, an amplifier circuit, a drive circuit, and the like for transmitting the signal detected by the optical sensor 5b to the calculation section 8. The circuit section 7 serves as a functional section for amplifying the analog signal output from the optical sensor 5b, converting it into a digital signal, and transmitting the digital signal to the calculation section 8. The calculation section 8 includes a computer in which software for analyzing the characteristics of the liquid, such as the flow rate and viscosity, is installed based on the information transmitted from the circuit section 7. The calculation section 8 includes hardware such as a CPU, ROM, and RAM for calculating the characteristics of the liquid, such as the flow rate and viscosity, and stores and is executable a program for calculating the flow rate and viscosity of the liquid. The display section 9 includes a liquid crystal display or the like for displaying the calculation results in the calculation section 8 and the driving state of the sensor section 5. The terminal device 6 is not limited to being configured by one piece of hardware, and may be configured by multiple pieces of hardware. For example, the terminal device 6 may have the circuit unit 7, the calculation unit 8, and the display unit 9 each configured as separate hardware.

[0015] The tubular member 2 is made of a transparent material having optical transparency, and is formed in a hollow, elongated shape having a flow path 2a with a small cross-sectional area (inner diameter) that generates a capillary phenomenon. The tubular member 2 may be a glass tube. If the tubular member 2 is a glass tube, the light irradiated toward the flow path 2a is more easily transmitted than in a tubular member 2 made of a transparent resin material, and it is possible to suppress the attenuation and scattering of light. This is suitable when the sensor unit 5 of the analysis device 1 is an optical sensor 5b. Furthermore, if the tubular member 2 is a glass tube, it is easier to manufacture a flow path 2a with a small cross-sectional area (inner diameter). An opening on one side of the flow path 2a in the longitudinal direction of the tubular member 2 constitutes the receiving port 2b. The tubular member 2 is configured so that the liquid that is dropped into the dropping portion 11 and comes into contact with the receiving port 2b can be introduced into the flow path 2a by the capillary phenomenon. Moreover, an elastic tube 3 may be detachably connected to the other end of the longitudinal direction of the tubular member 2. The tube 3 may be provided with a valve device or the like for opening and closing the flow path of the tube 3 .

[0016] The analysis device 1 may include a base member 4 on which the analysis device member 10 and the tubular member 2 are placed. The base member 4 may be a long rectangular plate. In the illustrated example, the base member 4 has a dam portion 4b protruding in the thickness direction from three sides of the peripheral portion of one plate surface 4a. The tubular member 2 may be fixed to the base member 4 by a fixing member such as an adhesive or a sticky material. The base member 4 may also be provided with a mark or the like that serves as a guide for positioning the tubular member 2. The base member 4 may also be configured so that the sensor unit 5 is disposed on its lower side. In this case, the base member 4 may have an opening that penetrates in the thickness direction along the longitudinal direction of the tubular member 2 so that light from the optical sensor 5b can pass through, or the base member 4 itself may be made of a transparent material. The base member 4 may also be made of a sheet body that does not have the dam portion 4b. The analysis device 1 may also be configured without the base member 4. In this case, a base member on which the tubular member 2 is placed may be configured in an analyzer member 10 described below.

[0017] The analytical device component 10 of this embodiment used in the above-mentioned analytical device 1 is capable of suppressing leakage of liquid (droplets) dripped onto the dripping portion 11 to the outside, as shown in Figures 1(a) and 3(a). The analytical device member 10 is in a sheet shape. With this configuration, it is possible to make the analytical device member 10 thinner. The analytical device member 10 may have any shape and size that allows the dripping part 11 to surround the receiving port 2b arranged on the upper side in a plan view. In the illustrated example, the analytical device member 10 is in a rectangular sheet shape in a plan view.

[0018] The dripping part 11 may be configured so that the dripped liquid (droplets) comes into contact with the receiving port 2b. In this case, the liquid dripped onto the dripping part 11 may spread and come into contact with the receiving port 2b. The liquid that comes into contact with the receiving port 2b is introduced into the flow path 2a by the capillary phenomenon of the tubular member 2. The dripping part 11 may have a hydrophilic surface if the dripped liquid is water-soluble. With this configuration, the liquid on the dripping part 11 can easily spread over the dripping part 11. 3(a), the dripping part 11 may be formed in a circular shape in a plan view, or in other shapes. An appropriate mark or the like may be provided in an appropriate position on the analytical device member 10 to serve as a guide for the positioning of the receiving port 2b (tubular member 2) so that the receiving port 2b of the tubular member 2 can be disposed at an appropriate position on the dripping part 11.

[0019] When liquid is dripped onto this dripping portion 11, as shown in Figure 3(b), since a flow stopper 12 having a larger contact angle than dripping portion 11 is provided around it, outward diffusion is suppressed and the liquid spreads over dripping portion 11 and is introduced into the receiving port 2b of the tubular member 2. 3(c), on the flow stopping portion 12, the cohesive energy of the liquid acts on the outer periphery of the flow stopping portion 12 to suppress diffusion, thereby suppressing leakage of the liquid to the outside. In addition, when the liquid straddles the dripping portion 11 and the flow stopping portion 12, a force acts on the liquid to move it toward the dripping portion 11 side, which has a smaller contact angle, so that leakage of the liquid beyond the flow stopping portion 12 can be suppressed. In the case where the liquid to be dropped is water-soluble, the surface of the flow stopper 12 may be hydrophobic. With this configuration, the liquid on the flow stopper 12 is unlikely to spread out as it curls up on the flow stopper 12. The contact angle of the liquid on the flow stopper 12 is preferably 100 degrees or more from the viewpoint of suppressing leakage of the liquid dropped on the dropping portion 11 to the outside. The contact angle of the liquid on the dropping portion 11 may be smaller than the contact angle of the liquid on the flow stopper 12, and may be, for example, 60 degrees or less, or 45 degrees or less. The contact angle of the liquid can be measured in accordance with the method for testing the wettability of substrate glass surfaces as specified in JIS R 3257:1999.

[0020] The dripping portion 11 and the flow stopping portion 12 being substantially flush includes a configuration having unevenness or steps of about 1 mm or less. For example, a slight step may be formed between the dripping portion 11 and the flow stopping portion 12, and one of the dripping portion 11 and the flow stopping portion 12 may be configured as a step-down portion 13 formed in a step-down shape relative to the other. In this case, the leakage of the liquid to the outside can be effectively suppressed at the boundary portion of the step-down portion 13. As shown in FIG. 3(b), when the dripping portion 11 is the step-down portion 13, the leakage of the liquid to the outside can be effectively suppressed by the step wall surface 12a between the dripping portion 11 and the flow stopping portion 12. Note that even when the flow stopping portion 12 is the step-down portion 13, the cohesive energy of the liquid acts at the outer peripheral edge portion of the dripping portion 11 to suppress diffusion, and the leakage of the liquid to the outside can be suppressed. The step of such a stepped-down portion 13 may be an appropriate step from the viewpoint of making the analytical device member 10 thinner, and when the tubular member 2 is placed on the flow stopper portion 12 on the stepped-up side as in the illustrated example, so as not to impede the introduction of the liquid dropped into the dropping portion 11 into the receiving port 2b of the tubular member 2. The step of such a stepped-down portion 13 may be, for example, about 0.05 mm to 1 mm, or about 0.05 mm to 0.4 mm.

[0021] 3(a), the flow stopping portion 12 surrounds the entire periphery of the dripping portion 11. With this configuration, leakage of the liquid from the dripping portion 11 to the outside can be more effectively prevented. A plurality of flow stopping portions 12 are provided at intervals in a direction away from dripping portion 11. With this configuration, the flow of liquid is restricted at each flow stopping portion 12, and leakage of the liquid to the outside can be more effectively restricted. The analytical device member 10 includes a first sheet body 14 that constitutes one of the dripping portion 11 and the flow stopper portion 12, and a second sheet body 15 that is laminated on the upper side of the first sheet body 14 and constitutes the other. With this configuration, the dripping portion 11 and the flow stopper portion 12 can be formed by laminating the second sheet body 15 on the first sheet body 14, making it possible to easily manufacture the analytical device member 10.

[0022] Specifically, a plurality of second sheet bodies 15 constituting the flow stopper portion 12 are laminated on a first sheet body 14 constituting the dripping portion 11 to form a plurality of flow stopper portions 12. In this embodiment, the analysis device member 10 is provided with a first flow stopper portion 12A that surrounds the entire periphery of the dripping portion 11, and a second flow stopper portion 12B that surrounds the entire periphery of the first flow stopper portion 12A with a gap radially outward from the first flow stopper portion 12A. The first flow stopping portion 12A is in the shape of a ring concentric with the dripping portion 11, which is circular in plan view. This first flow stopping portion 12A is formed in a ring shape by an inner circumferential second sheet body 15A constituting the second sheet body 15. A circular through hole 16 is formed in this inner circumferential second sheet body 15A to expose the dripping portion 11 of the first sheet body 14. In other words, the thickness of the inner circumferential second sheet body 15A laminated on the first sheet body 14 constituting the dripping portion 11 becomes the step of the stepped portion 13.

[0023] The second flow stopper 12B is provided on the outer periphery of the first flow stopper 12A. Between the second flow stopper 12B and the first flow stopper 12A, a recess 18 having a circular ring shape in plan view is formed. The second flow stopper 12B is formed by the outer periphery second sheet body 15B constituting the second sheet body 15. The outer periphery second sheet body 15B is formed with a through hole 16A corresponding to the recess 18, the first flow stopper 12A (the inner periphery second sheet body 15A) and the dripping portion 11. The bottom side of the recess 18 is formed by the first sheet body 14, and is formed in a stepped shape from the inner periphery second sheet body 15A and the outer periphery second sheet body 15B on both radial sides stacked on the first sheet body 14. By providing such a recess 18, it is possible to more effectively suppress leakage of liquid to the outside. In the illustrated example, the outer peripheral second sheet body 15B has a rectangular outer shape.

[0024] The first sheet body 14 may be of a size and shape sufficient to cover at least the through holes 16A of the outer peripheral second sheet body 15B stacked above it, or may be of a similar size and shape to the outer peripheral second sheet body 15B, or may be larger than the outer peripheral second sheet body 15B. The first sheet body 14 and the second sheet body 15 may be sheet bodies made of paper, resin, or the like that have barrier properties such as water resistance, oil resistance, chemical resistance, etc. If the first sheet body 14 and the second sheet body 15 are configured to have barrier properties, it is possible to prevent liquid from seeping into these sheet bodies and contaminating the lower sides of these sheet bodies. The first sheet body 14 and the second sheet body 15 may be laminated together by pressure bonding, adhesive, or the like. Furthermore, the sheet body constituting the flow stopping portion 12 of the first sheet body 14 and the second sheet body 15 may be made of a material that has a larger contact angle with the liquid than the portion of the other sheet body constituting the dripping portion 11. Furthermore, the contact angle with the liquid of the flow stopping portion 12 may be made larger than the contact angle with the liquid of the dripping portion 11 by performing an appropriate surface treatment.

[0025] Next, modified examples of the analytical device member will be described with reference to Figures 4(a)-(f) and Figures 5(a) and (b). In each of the following modified examples, differences from the previously described example will be mainly described, and a description of the configuration and effects of parts common to the previously described example will be omitted. In each of the following modified examples, the dripping part 11 is formed of a first sheet body 14, and the flow stopping part 12 is formed of a second sheet body 15, but the present invention is not limited to this.

[0026] FIG. 4(a) shows an analytical device member 10A according to a first modified example. In this modified example, the analytical device member 10A does not have a plurality of flow stoppers 12. This analytical device member 10A has only a ring-shaped flow stopper 12 substantially similar to the example of FIG. 3(a). With this configuration, the analytical device member 10A can be easily manufactured by laminating one ring-shaped second sheet body 15 constituting the flow stopper 12 on the first sheet body 14 constituting the dripping portion 11.

[0027] FIG. 4(b) shows an analysis device member 10B according to a second modification. In this modification, the analysis device member 10B includes a first flow stopper 12A having a substantially annular shape similar to that of the example of FIG. 3(a) and a second flow stopper 12B having a substantially annular shape provided on the outer periphery of the first flow stopper 12A. The second flow stopper 12B is provided radially outwardly of the first flow stopper 12A with a gap therebetween and substantially concentrically with the first flow stopper 12A so as to surround the periphery. Between the first flow stopper 12A and the second flow stopper 12B, a circular recess 18 is formed similar to that of the example of FIG. 3(a). Since the second flow stopper 12B is annular, the condensation energy of the liquid also acts on the outer periphery. In this way, the liquid can be more effectively prevented from leaking outward.

[0028] 4(c) shows an analytical device member 10C according to a third modified example. In this modified example, the flow stopper 12 on the outer periphery of the dripping portion 11 is not circular but has a rectangular outer shape in a plan view. The flow stopper 12 is formed of a rectangular second sheet body 15 having a circular through hole 16 through which the dripping portion 11 is exposed.

[0029] FIG. 4(d) shows an analysis device member 10D according to a fourth modification. In this modification, the analysis device member 10D is provided with a flow stopper 12 whose inner periphery is polygonal in plan view. In the illustrated example, a second flow stopper 12B whose inner periphery is rectangular in plan view is provided on the outer periphery of a first flow stopper 12A having a substantially circular ring shape similar to the example of FIG. 3(a). In addition, in the illustrated example, the second flow stopper 12B is formed by a rectangular frame-shaped outer periphery second sheet body 15B having a rectangular through hole 16A in plan view so as to surround the inner periphery second sheet body 15A constituting the first flow stopper 12A. Note that the inner periphery shape of the second flow stopper 12B is not limited to a rectangular shape, and may be another polygonal shape, and the inner periphery shape of the first flow stopper 12A that divides the dripping part 11 may be polygonal. In other words, the dripping part 11 may be polygonal in plan view.

[0030] 4(e) shows an analysis device member 10E according to a fifth modified example. In this modified example, the flow stopper 12 provided around the dripping part 11 does not surround the dripping part 11 all around. In this modified example, the flow stopping portion 12 includes a first flow stopping portion 12A that is approximately circular in shape when viewed in a plane, and a second flow stopping portion 12B that is approximately circular in shape and spaced apart radially outward from the first flow stopping portion 12A. A first discontinuity 19A is provided in the circumferential middle of the first flow stopper 12A, exposing the first sheet body 14. The first discontinuity 19A is provided to face the receiving port 2b. The first flow stopper 12A is formed by an inner circumferential side second sheet body 15A that is substantially C-shaped in a plan view. Two second discontinuities 19B that expose the first sheet body 14 are provided in the circumferential midway portion of the second flow stopping portion 12B. These two second discontinuities 19B are provided so as to be circumferentially offset from the first discontinuity portion 19A. Moreover, these two second discontinuities 19B are provided so as to be positioned opposite each other. In the illustrated example, these two second discontinuities 19B are provided so as to be circumferentially spaced 90 degrees from the first discontinuity portion 19A. The second flow stopping portion 12B is formed by two outer peripheral second sheet bodies 15B that are substantially semicircular in plan view. The width of the discontinuity along the circumferential direction of the first discontinuity portion 19A and the second discontinuity portion 19B may be any appropriate dimension that can prevent the passage of liquid (droplets). Because liquid tries to reduce its surface area by cohesive energy, even if the first flow stopper portion 12A and the second flow stopper portion 12B, which have a large contact angle, are interrupted, the passage of the liquid can be prevented if the width of the discontinuity is small.

[0031] 4(f) shows an analytical device member 10F according to a sixth modified example. In this modified example, the plurality of flow stop portions 12 are formed by a single second sheet body 15 laminated on a first sheet body 14. With this configuration, the plurality of flow stop portions 12 are formed by laminating a single second sheet body 15 on the first sheet body 14, so that the manufacturing of the analytical device member 10F is easier than with a configuration in which the plurality of flow stop portions 12 are formed by a plurality of second sheet bodies 15. In this modification, the flow stopping portion 12 includes a first flow stopping portion 12A having a circular ring shape in a plan view, a second flow stopping portion 12B having a circular ring shape provided radially outwardly from the first flow stopping portion 12A at a distance, and a third flow stopping portion 12C provided radially outwardly from the second flow stopping portion 12B at a distance. The third flow stopping portion 12C has a circular inner circumferential shape and a rectangular outer circumferential shape.

[0032] The second sheet body 15 is provided with a first through hole 16A that is circular in plan view and exposes the dripping portion 11. The second sheet body 15 is provided with a plurality of first connection portions 17A that connect the first flow stop portion 12A and the second flow stop portion 12B at a plurality of locations in the circumferential direction. In the illustrated example, the second sheet body 15 is provided with four first connection portions 17A at equal intervals in the circumferential direction. The second sheet body 15 is provided with four second through holes 16B that are each arc-shaped and are provided at equal intervals in the circumferential direction so that these first connection portions 17A are formed. The first sheet body 14 exposed in these second through holes 16B constitutes the bottom side of the recess 18, as described above. The second sheet body 15 is provided with second connection parts 17B at multiple locations in the circumferential direction, which connect the second flow stop part 12B and the third flow stop part 12C. In the illustrated example, the second sheet body 15 is provided with two second connection parts 17B at equal intervals in the circumferential direction. These second connection parts 17B are provided at positions offset from the first connection part 17A in the circumferential direction. The second sheet body 15 is provided with two third through holes 16C, each of which has a substantially semicircular ring shape, at equal intervals in the circumferential direction so that these second connection parts 17B are formed. The first sheet body 14 exposed in these third through holes 16C constitutes the bottom side of the recess 18, as described above.

[0033] FIG. 5(a) shows an analysis device member 10G according to the seventh modification. In this modification, the analysis device member 10G has the dripping portion 11 and the flow stopping portion 12 formed without stacking the first sheet body 14A and the second sheet body 15A. In this modification, the first sheet body 14A constituting the dripping portion 11, which has a shape that matches the through hole 16 in a plan view, is fitted into the through hole 16 formed in the second sheet body 15A constituting the flow stopping portion 12. In addition, the thickness of the first sheet body 14A and the thickness of the second sheet body 15A are made different, and the step-down portion 13 is formed by the difference in thickness. In this modification, the thickness of the second sheet body 15A constituting the flow stopping portion 12 is made larger than the thickness of the first sheet body 14A constituting the dripping portion 11, and the dripping portion 11 is made into the step-down portion 13.

[0034] Fig. 5(b) shows an analytical device member 10H according to an eighth modified example. In this modified example, the dripping part 11 and the flow stopper part 12 are flush with each other. In other words, the analytical device member 10H does not have a stepped part 13. Even when the dripping part 11 and the flow stopper part 12 are flush with each other in this manner, the flow stopper part 12, which has a larger contact angle with the liquid than the dripping part 11, can prevent the liquid from leaking outward, as shown in Fig. 5(b). In this case, a configuration may be adopted in which a through hole 16 into which the first sheet body 14 is fitted is provided in a second sheet body 15 having the same thickness as the first sheet body 14 constituting the dripping portion 11. Alternatively, the dripping portion 11 and the flow stopping portion 12 may be formed by subjecting the surface of the same sheet body to an appropriate surface treatment so that the contact angle between the liquid and the flow stopping portion 12 is larger than the contact angle between the liquid and the dripping portion 11. In addition, when the dripping part 11 and the flow stopping part 12 are flush with each other as in this modified example, a marking part may be provided to make the range of the dripping part 11 visible. As such a marking part, for example, the range of the dripping part 11 may be indicated by a line or the like, or the color of the dripping part 11 may be made different from the surrounding area.

[0035] Next, an analysis device member according to a second embodiment will be described with reference to Fig. 5(c). In the description of the second embodiment, differences from the first embodiment will be mainly described, and the description of the configuration and effects of the parts common to the first embodiment will be omitted. The analytical device member 20 is formed to surround the receiving port 2b of the tubular member 2 arranged on the upper side in a plan view, and includes a substantially flat-surface dripping portion 21 on which liquid is dripped, and a stepped portion 22 formed to surround the dripping portion 21 and to be stepped downward from the dripping portion 21. With this configuration, the liquid dripped into the dripping portion 21 and trying to spread is suppressed from spreading by the cohesive energy of the liquid acting on the outer peripheral edge of the dripping portion 21. As a result, even if the contact angles of the dripping portion 21 and the stepped portion 22 with the liquid are substantially the same, leakage of the liquid to the outside can be suppressed. In addition, the step between the substantially flat-surface dripping portion 21 and the stepped portion 22 can be made small because it is only necessary to form an edge around the dripping portion 21, and it is possible to achieve a thinner structure compared to a configuration in which a concave liquid reservoir portion or the like is provided to prevent liquid leakage. The stepped portion 22 may be configured so that the contact angle of the liquid with the liquid is larger than the contact angle of the liquid with the dripping portion 21. This makes it possible to more effectively prevent the liquid from leaking out of the dripping portion 21.

[0036] The analytical device member 20 is formed in a sheet shape. As shown in FIG. 5(c), the analytical device member 20 is formed by stacking the first sheet body 23 constituting the dripping portion 21 on the second sheet body 24 constituting the stepped portion 22. The thickness of the first sheet body 23, that is, the step of the stepped portion 22, may be an appropriate dimension from the viewpoint of thinning the analytical device member 10A. The thickness of the first sheet body 23 may be, for example, about 0.05 mm to 1 mm, or about 0.05 mm to 0.4 mm. In the illustrated example, the first sheet body 23 and the second sheet body 24 are formed by sheets of approximately the same thickness. The shape of the dripping part 21 of the analysis device member 20 may be circular or polygonal in plan view, as described above. The stepped portion 22 may be configured to surround the entire periphery of the dripping part 21. The analysis device member 20 may also be provided with another sheet body that is laminated on the second sheet body 24 so as to surround the periphery of the stepped portion 22 and form a stepped wall surface.

[0037] Next, a modified example of the second embodiment will be described with reference to Fig. 5(d). In the description of this modified example, differences from the previous example will be mainly described, and a description of the configuration and effects of the parts in common with the previous example will be omitted. In this modification, the dropping portion 21 and the stepped portion 22 are formed in the analysis device member 20A without laminating the first sheet body 23A and the second sheet body 24A. In this modification, the first sheet body 23A constituting the dropping portion 21 is fitted into the through hole 25 formed in the second sheet body 24A constituting the stepped portion 22, and has a shape that matches the through hole 25 in a plan view. In addition, the thickness of the first sheet body 23A is made larger than the thickness of the second sheet body 24A, and the stepped portion 22 is formed on the outer periphery of the dropping portion 21 due to the difference in thickness.

[0038] The different configurations described in the above examples may be appropriately modified, rearranged, or combined as necessary. In each of the above examples, the analytical device member is rectangular in plan view, but may be other shapes. When the analytical device member in each of the above examples is placed on the plate surface 4a of the base member 4, it may be formed to a size that covers almost the entire surface of the plate surface 4a, or may be formed to a size that accommodates the entire tubular member 2. The specific configuration of the analytical device members 10, 10A to 10H, 20, and 20A is not limited to the above-mentioned configuration, and various other modifications are possible. [Explanation of symbols]

[0039] 1 Analyzer 2 Tubular member 2a Flow path 2b Inlet 10, 10A~10H Analytical equipment parts 11 Dripping part 12,12A~12C Stop part 13 Step Down Section 14, 14A First sheet body 15, 15A, 15B Second sheet body 20,20A Analytical equipment parts 21 Dripping part 22 Step Down Section

Claims

1. A component for an analytical device used in an analytical device for analyzing characteristics of a liquid passing through a flow path of a tubular member, comprising: a dripping portion having a substantially flat surface on which liquid is dripped, the dripping portion being formed so as to surround the receiving port of the tubular member disposed on the upper side in a plan view, and a flow stopping portion being formed so as to surround the periphery of the dripping portion, The flow stopper has a larger contact angle with the liquid than the dripping portion, and is substantially flush with the dripping portion.

2. In claim 1, The flow stopper is provided in a plurality of portions spaced apart from each other in a direction away from the dripping portion.

3. In claim 1, The flow stopper portion surrounds the entire periphery of the dripping portion.

4. In any one of claims 1 to 3, A component for an analytical device, characterized in that one of the dripping portion and the flow stopping portion is a stepped portion formed in a stepped shape with respect to the other, and the step difference between them is 0.05 mm to 1 mm.

5. In claim 4, A component for an analytical device, comprising: a first sheet body that constitutes one of the dripping portion and the flow stopping portion; and a second sheet body that is stacked above the first sheet body and constitutes the other.

6. A component for an analytical device used in an analytical device for analyzing characteristics of a liquid passing through a flow path of a tubular member, comprising: A component for an analytical device, comprising: a dripping portion having a substantially flat surface onto which liquid is dripped, the dripping portion being formed in a planar view to surround the receiving port of the tubular member arranged on the upper side; and a stepped portion surrounding the periphery of the dripping portion and formed in a stepped shape relative to the dripping portion.

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