JP2011030963A - Component measurement apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that sealing performance of a seal component varies in a circumferential direction and the nearly homogeneous sealing performance throughout a circumferential direction cannot be obtained. <P>SOLUTION: A component measuring device includes an upper case 7 having a first engagement groove, a middle case 9 having a second engagement groove, and a continuously endless cross-shaped seal 80 disposed between both cases. The cross-shaped seal has a first ridge 80a engaged in the first engagement groove 71 and continuing in the circumferential direction, a second ridge 80b engaged in the second engagement groove 72 and continuing in the circumferential direction, and a sealing portion 80c disposed between the first and second cases and continuing in the circumferential direction. The first ridge 80a has an elastic protrusion 82 which is elastically transformed while being engaged in the second engagement groove, and presses the other side surface toward a side surface of the first engagement groove. The second ridge 80b has an elastic protrusion 84 which is elastically transformed while being engaged in the second engagement groove, and presses the other side surface toward a side surface of the second engagement groove. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a component measuring apparatus that measures the amount and property of a predetermined component in a body fluid such as a blood glucose level in blood, and more particularly to a seal structure in a butt portion between members constituting a housing or the like.

Various body fluid component measuring devices are used to detect a predetermined component in a body fluid and measure the amount and property of the predetermined component. As an example of such a body fluid component measuring device, for example, a blood glucose meter for measuring glucose concentration in blood can be mentioned.
However, as a subject of blood glucose measurement measured by this blood glucose meter, there is a problem of cross infection when blood adheres to the blood glucose meter. In order to solve this problem, it is desired that the blood glucose meter can easily clean dirt such as attached blood after measuring the blood glucose level.

  In general, a component measuring device such as a blood glucose meter is composed of a measurement mechanism portion that plays a central role for performing component measurement, and a housing that covers and protects the measurement mechanism portion. The housing is made up of two or more parts (for example, upper case and lower case) to allow the measurement mechanism part to be taken in and out and to replace parts, and can be disassembled and assembled when necessary. It is said that. For this reason, a butt portion between components is inevitably generated in the case, and there is a possibility that dirt such as blood adheres to the butt portion or the dirt enters the case from the butt portion.

  Therefore, a waterproof structure using a packing is generally adopted for a housing of a component measuring device such as a blood glucose meter, so that cleaning operations such as washing with water can be easily performed. Such a waterproof structure is generally performed by interposing a packing between two parts to be abutted and pressing the packing with the two parts to bring them into close contact with each other. In this case, in order to elastically deform the packing, it is necessary to apply a certain large tightening force to the two parts. Therefore, a large number of screws are necessary for assembling the casing, and the rigidity of the casing itself needs to be sufficiently increased.

  As what solves such a problem, there exists a thing as described in patent document 1, for example. Patent Document 1 describes a packing structure provided on a divided surface of a casing of an electronic device. This drip-proof structure of an electronic device is applied to a housing of an electronic device including a first case and a second case that are detachably fitted, and a peripheral groove is formed on an opening end surface of the first case. A circumferential packing is formed between the first case and the second case using the circumferential groove. The packing is provided on a side opposite to the first convex portion, a first convex portion that engages with the circumferential groove, a support portion that extends from the first convex portion and is sandwiched between the two cases, and the first convex portion. And a second convex portion pressed against the opening end surface of the second case.

  According to the drip-proof structure of an electronic device according to Patent Document 1 (hereinafter referred to as “first conventional example”), a cross-sectional view in which a support portion protrudes between a pair of convex portions in a groove portion of a split surface of a case. Since the structure is provided with a cross-shaped circumferential packing, it is expected that the assembly performance is good, the stability is excellent, and it can be realized within the thickness range of a general casing.

  Patent Document 2 describes a packing used for shielding a side wall of a radio wave shield room having a simple assembly type and good electromagnetic shielding effect. The shield packing of the assembly-type radio wave shielding chamber according to Patent Document 2 is configured by a panel in which the side wall of the chamber is formed on a plurality of rectangular block plates, and a seal engagement having a trapezoidal cross section at the butt side of each panel An outer frame member having a groove is installed. Between the outer frame members of the adjacent panels, the shield member of the inner wall surface of each panel adjacent to the entire surface of the protruding portion projecting in the indoor direction in the packing having a substantially cross-shaped cross section that fits in the opposing seal engaging groove It is characterized by being assembled by interposing a wire mesh shield that is connected so that the shields between them are continuous.

  According to the shield packing of the assembly-type radio wave shield room according to this Patent Document 2 (hereinafter referred to as “second conventional example”), it is possible to prevent radio wave leakage from a joint portion between each panel on the side wall of the radio wave shield room, The effect of improving the shielding effect of the radio wave shielding room is expected.

Japanese Patent Laid-Open No. 2004-193396 Japanese Utility Model Publication No. 63-134594

  However, in the case of the first conventional example described above, the cross-sectional shape of the circumferential groove provided on the opening end surface of the first case is a quadrangle, and the first protrusion of the packing fitted in the circumferential groove. The part had a shape commensurate with the circumferential groove, and was formed in a quadrangle with the same size. Therefore, when the second case is pressed against the first case, the sealing performance of the packing with respect to the circumferential groove of the first case changes in the circumferential direction, which may cause a sealing failure. As a result, for example, when blood adheres to the blood glucose meter, blood may enter the butting portion, making it difficult to clean, or blood or washing water may enter the inside, and the blood glucose meter itself may not function correctly. There was a problem.

  That is, as a variation in molding, if the packing is manufactured in a state where the shape of the first convex portion is not uniform in the circumferential direction, the first convex portion is formed on the side wall outside the circumferential groove when pressed. In other parts, the first convex portion is pressed against the inner side wall of the circumferential groove. Then, the first protrusion is pressed against the outer side wall of the circumferential groove in a part of the entire packing, and is pressed against the inner side wall of the circumferential groove in the other part. It is put in the housing in the hit state. As a result, the center of the first convex portion is wavy in the circumferential direction, so that the sealing performance of the packing is not uniform in the circumferential direction, which may cause a sealing failure at the butt portion of the housing.

  Further, in the case of the second conventional example, the cross-sectional shape of the seal engagement groove provided in the side panel forms a trapezoid with the opening side widened, and the fitting protrusion of the cross packing engaged therewith However, it was formed into a tapered trapezoidal cross section corresponding to the shape of the seal engagement groove. Therefore, the fitting protrusion is easy to come out of the seal engagement groove. To seal the gap between the two side panels with this cross packing, tighten the cross packing with a sufficiently large force. Is required. As a result, a large number of screws must be fixed to crush the cross packing, or the rigidity of the housing itself must be set sufficiently large, resulting in a problem that the entire apparatus becomes large. In addition, if the casing is fixed using heat welding, an adhesive, or the like, there is a problem that subsequent disassembly repair is difficult or impossible.

  The problem to be solved is that, in the conventional technology as described above, the sealing performance of the seal member changes in the circumferential direction, and a substantially uniform sealing performance cannot be obtained over the entire range in the circumferential direction. There was a problem. In addition, a large number of screws are required to crush the seal member, and the rigidity of the housing itself needs to be set sufficiently large, resulting in an increase in the size of the entire apparatus.

  The present invention relates to a first case and a second case that are separably engaged with each other, and an endless shape interposed in a butting portion where the opening end surfaces of the first case and the second case are in contact with each other. And a continuous sealing member. The opening end surface of the first case is provided with an endless first fitting groove having a pair of parallel inner side surfaces, and the opening end surface of the second case has a pair of parallel inner side surfaces. A second fitting groove that is continuous in an endless manner is provided. The seal member includes a first protrusion that is fitted in the first fitting groove and is continuous in the circumferential direction, and a second protrusion that is fitted in the second fitting groove and is continuous in the circumferential direction. And a sealing portion interposed between the first case and the second case and continuous in the circumferential direction. The first protrusion is formed so as to protrude laterally from one outer side surface of the base portion and a base portion having a pair of outer side surfaces smaller than and parallel to the first fitting groove. Elastic protrusions that are elastically deformed in a state of being fitted in the fitting grooves and press the other outer side surface of the base portion against the inner side surface of the first fitting groove facing the other outer side surface. is doing. Furthermore, the second protrusion is formed so as to protrude sideways from one outer side surface of the base portion, and a base portion having a pair of outer side surfaces smaller than and parallel to the second fitting groove, and An elastic protrusion that is elastically deformed in a state of being fitted in the second fitting groove and presses the other outer side surface of the base portion against the inner side surface of the second fitting groove facing the other outer side surface; The main feature is to have

  According to the present invention, in a component measuring device such as a blood glucose meter, the sealing performance by the sealing member at the butt portion of the housing can be set substantially uniformly over the entire circumferential range of the sealing member, A substantially uniform sealing performance can be obtained throughout the apparatus. In addition, the component measuring apparatus can be realized with a relatively simple configuration without increasing rigidity or increasing the size.

It is an assembly perspective view showing the 1st example of the component measuring device of the present invention. It is a top view of the component measuring device shown in FIG. It is a right view of the component measuring apparatus shown in FIG. It is a front view of the component measuring device shown in FIG. It is the disassembled perspective view seen from the plane side of the component measuring apparatus shown in FIG. It is the disassembled perspective view seen from the bottom face side of the component measuring device shown in FIG. It is the perspective view which decomposed | disassembled the sampling tool mounting part of the component measuring device shown in FIG. 1, and the component of the vicinity. FIG. 8A is a perspective view, FIG. 8B is a rear view, FIG. 8C is a side view, and FIG. 8D is a Z- in FIG. 8C, showing a sampling tool (chip) according to a first embodiment of the component measuring apparatus of the present invention. It is Z line sectional drawing. It is the YY sectional view taken on the line shown in FIG. 4 of the state which mounted | wore the collection tool (chip) with the component measuring apparatus of this invention. It is explanatory drawing of the detachment | leave operation | movement of the collection tool (chip) which expanded the cross section of the collection tool mounting part of the component measuring device of this invention. It is explanatory drawing which expressed the sealing state by the sealing member by cross-sectioning the housing | casing of the component measuring apparatus shown in FIG. It is explanatory drawing which carried out the cross section and showed the sealing member which concerns on 1st Example of the component measuring apparatus of this invention, and the 1st case and the 2nd case. It is explanatory drawing showing the fitting state of the sealing member shown in FIG. 12, and the 1st case and the 2nd case. It is explanatory drawing which carried out the cross section and showed the sealing member which concerns on 2nd Example of the component measuring apparatus of this invention, and a 1st case and a 2nd case. It is explanatory drawing which showed the fitting state of the sealing member shown in FIG. 14, and the 1st case and the 2nd case. FIG. 16A shows a sealing member according to a third embodiment, FIG. 16B shows a sealing member according to the fourth embodiment, and FIG. 16C shows a sealing member according to another embodiment of the component measuring apparatus of the present invention. 16D is a seal member according to the sixth embodiment, FIG. 16E is a seal member according to the seventh embodiment, and FIG. 16F is a seal member according to the eighth embodiment.

  Hereinafter, an example of an embodiment for implementing the component measuring apparatus of the present invention will be described with reference to the drawings. FIGS. 1-13 is a figure which shows the blood glucose meter 1 and the sealing member which concern on the 1st Example of the component measuring apparatus of this invention. 14-16 is a figure which shows the sealing member based on the other Example of the component measuring apparatus of this invention. The present invention is not limited to the blood glucose meter 1 shown in the first embodiment.

  The blood glucose meter 1 shown in FIGS. 1 to 6 is operated by a doctor, a nurse or the like in a hand like a mobile phone, and its main function is to measure a blood glucose level in blood, It is a device that can perform confirmation of the name of a patient related to blood glucose level measurement, confirmation of a drug to be administered, management of measurement data, and the like. This blood glucose meter 1 includes a housing 2 formed of a hollow container, a power supply unit 3 built in the housing 2, a measuring unit 4 for measuring a blood sugar level, input items, confirmation items, measurement results, and the like. The display unit 5 is configured to include a display unit 5 and a control unit 6 that controls operation, display, and the like of the measurement unit 4 and the display unit 5.

  As shown in FIGS. 1 to 4, the case 2 is a solid body having a body 11 that is slightly elongated and easy to be held by a person so that a person can hold it with one hand and easily press the operation button of the operation unit. It is made into a shape. The housing 2 includes an upper case 7 and a lower case 8 that are stacked one above the other, and a middle case 9 that is housed in a space formed inside the upper and lower cases 7 and 8. The middle case 9 is accommodated in a recess of the lower case 8, and the upper case 7 is overlaid on the lower case 8 so as to cover the middle case 9. Then, in a state where the upper case 7 and the lower case 8 are overlapped, the three cases 7, 8, 9 can be assembled and disassembled by a plurality of fixing screws.

  As shown in FIGS. 1 and 2, an opening window 15 having a substantially rectangular shape penetrating the front and back surfaces is provided at a substantially central portion of the upper case 7. A panel cover 16 having a shape corresponding to the opening window 15 is fitted. The entire upper surface of the panel cover 16 is covered with a front panel 17 that is appropriately larger than this. The front panel 17 is large enough to cover the switch group 18 having a plurality of operation switches arranged on the back side of the upper surface of the upper case 7. The switch group 18 is housed in the middle case 9 via the switch wiring board 19, and is configured such that the input portion of each operation switch faces a predetermined position of the operation portion 20 of the upper case 7.

  A mount member 40 that elastically supports the middle case 9 is provided in the recess of the lower case 8. As the mount member 40, for example, an O-ring can be applied, and the lower surface of the middle case 9 is supported from below by the O-ring. Therefore, a holding groove 41 having a substantially rectangular shape for accommodating the mount member 40 is provided in the recess of the lower case 8. By supporting the lower peripheral edge of the middle case 9 with the mount member 40, the middle case 9 is elastically supported by utilizing the elasticity and sealing properties when the O-ring is compressed.

  As shown in FIGS. 5 and 11, the middle case 9 is made of a container-like member with a shallow bottom having a substantially rectangular shape opened on the upper surface, and is sized to fit into the recess of the lower case 8. Yes. The middle case 9 accommodates the power supply unit 3, the display unit 5, the control unit 6, and the like. The power supply unit 3 includes a secondary battery 48 as a portable power supply that is stored in a battery storage unit 47 provided on the bottom surface of the middle case 9. The power of the secondary battery 48 controls the operation of the measurement unit 4 and the control unit 6 or the display of the display unit 5. As the secondary battery used for the power supply unit 3, a lithium ion battery is suitable, but other nickel-cadmium batteries, nickel-metal hydride batteries, and the like can be used.

  The main wiring board 24 of the control unit 6 and the flat display panel 23 of the display unit 3 are disposed above the power supply unit of the case 9. A switch wiring board 19 is disposed on the back side of the display unit 3. When the housing 2 is assembled, the display surface of the flat display panel 23 housed in the middle case 9 faces the inside of the panel cover 16 attached to the upper case 7. As the flat display panel 23, for example, a liquid crystal panel is suitable, but it is needless to say that an organic EL panel or other display panel can be used.

  On the main wiring board 24, an electric circuit formed in a predetermined shape is provided by printed wiring or the like. The main wiring board 24 is mounted with a microcomputer for executing a predetermined function set in advance, a storage device such as a ROM and a RAM in which a predetermined program is stored, a capacitor, a resistor, and other electronic components. ing. A flat display panel 23 is attached to the upper surface of the main wiring board 24 via a spacer (not shown).

  A bar code unit 58 is disposed below the switch wiring board 19. The bar code unit 58 is a device that scans the bar code of an identification tag such as a patient or a nurse and reads information on the patient or the user. The barcode unit 58 is attached to the housing 2 with the light emitting / receiving portion facing the notch 27 provided on the back surface of the lower case 8.

  As shown in FIGS. 5 and 6, the opening end surface of the peripheral portion 7a of the upper case 7 showing one specific example of the first case has an endless shape in which the cross-sectional shape is a quadrangle and the cross-sectional shape is continuous in the circumferential direction. A first fitting groove 71 that is continuous in a shape is provided. The pair of inner side surfaces of the first fitting groove 71 are formed to be parallel. Corresponding to the first fitting groove 71, the opening end face of the side surface portion 9a of the middle case 9 showing a specific example of the second case is similarly square in cross section and the cross section is circumferential. A second fitting groove 72 that is continuous in an endless manner is provided. The pair of inner side surfaces of the second fitting groove 72 are formed to be parallel. And the 1st specific example of a sealing member is shown between the opening end surface of the upper case 7, and the opening end surface of the middle case 9 using these 1st fitting grooves 71 and the 2nd fitting grooves 72. A cross-shaped seal 80 is interposed.

  The cross-shaped seal 80 has a shape as shown in FIG. In other words, the cross-shaped seal 80 is formed as a seal member having a substantially rectangular shape whose cross-sectional shape is a cross shape, and whose cross-sectional shape is continuous in the circumferential direction and is continuously endless. The crank-shaped deformed portions formed at the four corners of the cross-shaped seal 80 are provided in order to avoid a fixing screw for fixing the housing 2.

  The cross-shaped seal 80 includes a first protrusion 80a fitted in the first fitting groove 71, a second protrusion 80b fitted in the second fitting groove 72, and an upper It has inner and outer sealing portions 80 c and 80 d sandwiched between the peripheral edge portion 7 a of the case 7 and the side surface portion 9 a of the middle case 9. A second ridge 80b is provided on the opposite side of the first ridge 80a. And in the intermediate part of the longitudinal direction of both the protrusion parts 80a and 80b, the 1st sealing part 80c is provided in the one side of the direction orthogonal to the longitudinal direction, The other side of this 1st sealing part 80c A second sealing portion 80d is provided.

  The first protrusion 80a includes a base part 81 having a pair of outer side surfaces parallel to each other with a square section smaller than that of the first fitting groove 71, and an outer side of the base part 81 on the first sealing part 80c side. Two cross-sectional shapes formed so as to protrude from the side surface to the side have an elastic protrusion 82 having a semicircular shape. The height J1 of the base portion 81 is formed slightly smaller than the depth H1 of the first fitting groove 71 (J1 <H1), and the width L1 of the base portion 81 is set to be equal to that of the first fitting groove 71. It is formed slightly smaller than the width K1 (L1 <K1). On the other hand, the width M1 from one outer side surface of the base portion 81 to the top of the elastic projection portion 82 is formed to be slightly larger than the width K1 of the first fitting groove 71 (M1> K1).

  The second protrusion 80b includes a base portion 83 having a pair of outer side surfaces parallel to each other with a square section smaller than that of the second fitting groove 72, and an outer side of the base portion 83 on the first sealing portion 80c side. Two cross-sectional shapes formed so as to protrude from the side surface to the side have an elastic protrusion 84 having a semicircular shape. The height J2 of the base portion 83 is formed to be slightly smaller than the depth H2 of the second fitting groove 72 (J2 <H2), and the width L2 of the base portion 83 is equal to that of the second fitting groove 72. It is formed slightly smaller than the width K2 (L2 <K2). On the other hand, the width M2 from one outer side surface of the base portion 83 to the top of the elastic protrusion 84 is formed to be slightly larger than the width K2 of the second fitting groove 72 (M2> K2).

  In this description, the first fitting groove 71 and the second fitting groove 72 have different dimensions, and the dimensions of the first protrusion 80a and the second protrusion 80b are made to correspond to this. Although the case where it differed was demonstrated, the dimension of the 1st fitting groove | channel 71 and the 2nd fitting groove 72 is made to correspond, and the dimension of the 1st protrusion part 80a and the 2nd protrusion part 80b is made to correspond. Of course, it is good also as a structure. Normally, these dimensions are generally configured so as to coincide with each other, but can be freely set with different dimensions.

Further, the length from the front end surface of the first sealing portion 80 c of the cross-shaped seal 80 to the front end surface of the second sealing portion 80 d is set to the same length as the thickness of the side surface portion 9 a of the middle case 9. is doing. And the side part 85 of the upper case 7 is provided in the peripheral part 7a of the upper case 7 so that the outer side of the 1st protrusion part 80a may be covered, when the housing | casing 2 is combined. Further, a side surface portion 86 of the lower case 8 that covers the side surface portion 85 of the upper case 7 is provided in the lower case 8 so as to correspond to the side surface portion 85. These side portions 85 and 86 are provided so as to be parallel along the first and second fitting grooves 71 and 72.
Further, the pair of inner side surfaces of the first fitting groove 71 and the second fitting groove 72 and the pair of outer side surfaces of the base portion 81 and the base portion 83 are preferably parallel to each other. “Parallel” can also include a slight taper provided for removal from the mold during molding.

  By using the cross-shaped seal 80, the sealing performance between the upper case 7 and the middle case 9 can be sufficiently enhanced. Thereby, the waterproofness of the blood glucose meter 1 can be improved and the power supply unit 3, the display unit 5, the control unit 6 and the like can be effectively prevented from being contaminated by blood, water, or the like. In addition, as a material of the cross-shaped seal | sticker 80, nitrile rubber, silicon rubber, acrylic rubber, and other various sealing materials can be used, for example.

  As shown in FIGS. 1 to 4, one side in the longitudinal direction of the housing 2 is formed as a tapered curved portion 28 slightly curved toward the lower case 8, and an opening 29 is provided at the tip thereof. Yes. The bending portion 28 is composed of a combination of an upper bending portion 28a formed of an inwardly U-shaped portion provided in the upper case 7 and a lower bending portion 28b formed of an outward U-shaped portion provided in the lower case 8. The curved portion 28 that is curved toward the lower case 8 as a whole is formed by overlapping the upper curved portion 28a and the lower curved portion 28b. Accordingly, the opening 29 set at the distal end of the bending portion 28 is opened obliquely downward at a position slightly inclined toward the lower case 8 side with respect to the portion passing through the center of the housing 2.

  The measurement unit 4 is disposed in the opening 29 of the housing 2. A ring casing 31 is fixed to the opening 29 of the casing 2. The ring housing 31 includes a fixing portion 31a for fixing to the housing 2 and a cylindrical shaft portion 31b formed integrally with the fixing portion 31a. As shown in FIG. 5, the fixing portion 31 a has an end surface portion 31 c that is expanded inward so as to close the opening 29, and a cylindrical shape with a slightly smaller diameter at the substantially central portion of the end surface portion 31 c. The cylindrical shaft portion 31b is formed so as to protrude outward. Further, the fixing portion 31 a is provided with a plurality of engaging claws (in the present embodiment, two locations on the upper and lower sides) 45 for fixing the ring casing 31 to the casing 2. Corresponding to this, claw receiving portions 29 a are provided at two locations above and below the opening 29 of the housing 2.

  In the opening 29 of the housing 2, a measuring unit 4 for measuring a blood component indicating a specific example of the specimen is disposed. As shown in FIGS. 7 to 10, the measurement unit 4 includes a photometric block 33, an eject member 35, an eject operator 36, an inner ring 37, and the like. The photometry block 33 is a device that optically measures a blood glucose level from the collected blood. The photometric block 33 measures the color concentration of the blood sample and the red concentration of red blood cells, and quantifies the glucose concentration while correcting the glucose value obtained from the color concentration using the hematocrit value obtained from the red concentration. The blood sugar level can be measured. The photometric block 33 is supported and fixed to the housing 2.

  As shown in FIGS. 7 and 10, the photometric block 33 has a flat base portion 33a and circular shaft portions 33b and 33c formed in a two-stage structure on the front side of the base portion 33a. . A first shaft portion 33b having a large diameter is provided continuously with the base portion 33a, and a second shaft portion 33c having a small diameter is provided continuously with the first shaft portion 33b. An irradiation port 38 for irradiating one test paper with light of two types of wavelengths is opened in the second shaft portion 33c of the photometry block 33. The photometric block 33 is inserted inside the ring housing 31, and two shaft portions 33b and 33c are concentrically disposed inside the cylindrical shaft portion 31b.

  In addition, an inner ring 37 is disposed inside the cylindrical shaft portion 31 b, and a second shaft portion 33 c is disposed opposite to the back side of the inner ring 37. The inner ring 37 has a cylindrical portion 37a in which the through hole 41 is provided in the center, and a flange portion 37b provided so as to continuously extend radially outward on one end face side of the cylindrical portion 37a. ing. The flange portion 37 b is fitted inside the cylindrical shaft portion 31 b of the ring housing 31, and the inner ring 37 is fixed to the ring housing 31 via the flange portion 37 b.

  At this time, the cylindrical portion 37 a is disposed on the same axial center line inside the cylindrical shaft portion 31 b of the ring housing 31. As a result, a space portion having a ring shape is formed between the fixed portion 31 a of the ring casing 31 and the cylindrical portion 37 a of the inner ring 37. A frame body portion 61 of an eject member 35 described later slides in the longitudinal direction in the space portion having the ring shape. The ring housing 31 and the inner ring 37 constitute a collection tool mounting portion 43 that can removably support the collection tool (chip) 50. Here, the cylindrical shaft portion 31b of the ring housing 31 functions as a sampling tool holding portion for fitting and fixing the sampling tool 50, and the inner ring 37 is brought into contact with the test paper 57 and the measurement block by the contact of the sampling tool 50. The sampling tool positioning part for making the distance with 33 constant is comprised.

  The collection tool 50 has a configuration as shown in FIGS. 8A to 8D. That is, the sampling tool 50 includes a base portion 51 formed in a disk shape, a nozzle portion 52 formed on one surface of the base portion 51, and a cylindrical portion 53 formed on the other surface of the base portion 51. It is made up of. The outer diameter of the base portion 51 is formed to be approximately the same as the outer diameter of the cylindrical shaft portion 31b. The nozzle portion 52 is erected at the center of the base portion 51, and a sampling hole 54 penetrating in the axial direction is provided at the center portion. The tip of the nozzle portion 52 is tapered, and a concave groove 52a for facilitating the suction of the specimen is provided on the tip surface.

  The cylindrical portion 53 of the sampling tool 50 is formed in a size that matches the space of the sampling tool mounting portion 43, and its outer diameter is a size that can fit into the hole of the cylindrical shaft portion 31b. The inner diameter is large enough to cover the cylindrical portion 37a. Furthermore, a plurality of engaging claws (four in this embodiment) 55 made of an elastic piece are provided at the tip of the cylindrical portion 53, and the protrusions to which the engaging claws 55 are detachably engaged. 32 is provided on the inner peripheral surface of the cylindrical shaft portion 31b. When the engaging claw 55 is brought into contact with the inner peripheral surface of the cylindrical shaft portion 31b and pushed in so that the engaging claw 55 gets over the ridge 32, the sampling tool 50 is held by the cylindrical shaft portion 31b (collecting tool holding portion). You can increase your power and make it difficult to come off. The engaging claw 55 of the present embodiment is formed as an arc-shaped convex portion that is continuous in the circumferential direction, and a chevron-shaped convex portion 55a for increasing frictional resistance is provided on the outer peripheral surface thereof.

  Inside the cylindrical portion 53 of the collection tool 50, a test paper storage portion 56 communicating with the collection hole 54 is provided. The test paper storage unit 56 stores a test paper 57 that collects blood and holds a predetermined amount of blood. By irradiating the blood held on the test paper with the predetermined light emitted from the photometric block 33, the components in the blood can be measured. Further, the inner surface of the cylindrical portion 53 of the sampling tool 50 has a step, and the end of the inner ring 37 abuts on this step, whereby the sampling tool 50 is accurately positioned on the photometric block 33. That is, the inner ring 37 functions as a sampling tool positioning unit.

  An eject member 35 is provided to detach the sampling tool 50 mounted on the sampling tool mounting portion 43. The eject member 35 has a configuration as shown in FIG. In other words, the eject member 35 includes a frame body portion 61 that is pushed out by directly contacting the collection tool 50, and a sliding plate 62 that is fixed to the frame body portion 61 and is slid by a predetermined distance. The frame portion 61 is configured by opposing two arc pieces 61a, 61a curved in an arc shape in the left-right direction. The frame portion 61 is movably attached to the first circular shaft portion 33b of the photometry block 33, and is moved forward and backward by a predetermined distance in the axial direction outside the circular shaft portion 33b.

  The sliding plate 62 of the eject member 35 is shaped such that a midway portion in the longitudinal direction is bent at 90 degrees, and a fixed portion 62a is provided on one side of the bent portion, and on the other side of the bent portion. A connecting portion 62b is provided. The fixing portion 62a is formed as a U-shaped member having a size corresponding to the pair of arcuate plates 61a and 61a constituting the frame body portion 61. Then, a pair of arc plates 61a and 61a are erected so as to protrude to the opposite side of the connecting portion 62b on one surface of the fixed portion 62a. An insertion hole 63 for connecting to the eject manipulator 36 is provided at a substantially central portion of the connecting portion 62b.

  The eject operator 36 is fixed to the eject member 35 in the state shown in FIG. The eject operator 36 is provided so as to be exposed to the outside on the convex side of the curved portion 28 of the upper case 7. Therefore, as shown in FIG. 5, the upper case 7 is provided with a long hole 65 for allowing the eject operator 36 to move. The elongated hole 65 is linearly extended by a predetermined length in the front-rear direction of the housing 2, and the leg portion 36a of the eject operator 36 is slidably engaged.

  As shown in FIG. 10, a screw hole is provided on the back surface of the eject operation element 36, and is fixed to the eject member 35 by being tightened by a fixing screw 66 inserted into the insertion hole 63 of the sliding plate 62. . A ring-shaped spacer 67 is attached to the fixing screw 66, and a compression coil spring 68 is interposed between the spacer 67 and the sliding plate 62. In addition, the eject member 35 is pulled by a tension coil spring 69 shown in FIG. One end of the tension coil spring 69 is latched in a spring receiving hole 63 b provided in the sliding plate 62, and the other end is latched on a spring receiving portion of the housing 2.

  The code | symbol 70 shown in FIG. 5 is a collection tool case. In this collecting tool case 70, the collecting tool 50 is stored in advance, and the opening is sealed with a film or the like to keep the dried state. The collection tool case 70 is used when the collection tool 50 is attached to or removed from the collection tool attachment portion 43. The film of the opening is peeled off, and the sampling tool case 70 is put on the sampling tool mounting part 43 in a state where the sampling tool 50 is stored, so that the sampling tool 50 is automatically mounted on the sampling tool mounting part 43 due to the difference in fitting force. can do.

  That is, the sampling tool case 70 in which the sampling tool 50 is stored in the sampling tool storage part is put on the sampling tool mounting part 43, and the sampling tool case 70 is pushed to a predetermined depth. Thereby, the cylindrical portion 53 of the sampling tool 50 is inserted into the cylindrical shaft portion 31 b that is opened in a ring shape, and the four engaging claws 55 provided at the tip of the cylindrical portion 53 are connected to the cylindrical shaft portion 31 b of the ring housing 31. Between the inner surface of the inner ring 37 and the outer surface of the cylindrical portion 37 a of the inner ring 37. The collection tool 50 is held and fixed by the collection tool mounting portion 43 by the holding force generated between the cylindrical shaft portion 31 b and the cylindrical portion 53. Since the attachment force (fitting force) of the collection tool 50 to the collection tool case 70 is weak, when the collection tool case 70 is pulled, the collection tool case 70 is held by the collection tool mounting portion 43 while the collection tool case 70 is held. 50. Thereby, the attaching operation of the collection tool 50 is completed, and in this state, it is possible to measure a blood sugar level or the like in the blood as the sample.

Reference numeral 75 shown in FIGS. 1 and 2 is a scan button. The scan button 75 is an on / off switch for scanning barcode information using the barcode unit 58.
For example, ABS resin (acrylonitrile butadiene styrene resin) can be used as the material of the upper case 7, the lower case 8, the middle case 9, and the ring casing 31 described above. However, various engineering plastics having a certain degree of strength and durability can be used.

  The blood glucose meter 1 having such a configuration can be assembled as follows, for example. This assembling procedure shows an embodiment for assembling the blood glucose meter 1, and the present invention is not limited to this assembling procedure.

  First, the power supply unit 3, the display unit 5, and the control unit 6 are accommodated in the concave portion of the middle case 9, and necessary portions are fixed with screws. Next, the photometric block 33 of the measuring unit 4 is attached to the front surface which is one end in the longitudinal direction of the middle case 9. Next, the mount member 40 is mounted in the holding groove 41 provided in the recess of the lower case 8. Then, the middle case 8 is accommodated in the recess of the lower case 8.

  Next, the second protrusion 80b of the cross-shaped seal 80, which is continuously formed in an endless manner, is fitted in the endless second fitting groove 72 provided on the opening end surface of the middle case 9. Include. At this time, as shown in FIG. 12, a relatively large chamfered portion that is continuous over the entire circumference is provided on both edges on the opening side of the second fitting groove 72, and the second protrusion The base portion 83 of 80b is formed slightly smaller than the second fitting groove 72 (L2 <K2). For this reason, the elastic protrusion 84 provided on the second protrusion 80b is the only part that becomes a resistance for the second protrusion 80b to enter the second fitting groove 72 (M2> K2). . Therefore, the force for fitting the second ridge 80b into the second fitting groove 72 is relatively small, and the second ridge 80b with respect to the second fitting groove 72 has a full length. It can be easily fitted over.

  Next, the upper case 7 is overlaid on the lower case 8 holding the middle case 9 in which the cross-shaped seal 80 is mounted in the second fitting groove 72, and the upper case 7 is moved to the lower case 8 side. Press. At this time, as shown in FIG. 12, relatively large chamfered portions that are continuous over the entire circumference are provided on both edges of the endless first fitting groove 71 provided on the opening end surface of the upper case 7. Furthermore, the width of the base portion 81 of the first protrusion 80a is slightly smaller than the width of the first fitting groove 71 (L1 <K1). For this reason, the elastic protrusion 82 provided on the first protrusion 80a is the only part that becomes the resistance for the first protrusion 80a to enter the first fitting groove 71 (M1> K1). . Accordingly, the force for fitting the first protrusion 80a into the first fitting groove 71 can be relatively small, and the first protrusion 80a can be extended to the entire length with respect to the first fitting groove 71. It can be easily fitted over.

  Thus, the state shown in FIG. 17 is obtained, and the cross-shaped seal 80 is interposed between the opening end surface of the upper case 7 and the opening end surface of the middle case 9. Thus, the first protrusion 80a of the cross-shaped seal 80 is fitted into the first fitting groove 71, the second protrusion 80b is fitted into the second fitting groove 72, and Inner and outer sealing portions 80 c and 80 d protruding sideways are sandwiched between the opening end surface of the upper case 7 and the opening end surface of the middle case 9. At this time, since the height J1 of the first protrusion 80a is smaller than the depth H1 of the first fitting groove 71, the tip surface of the base portion 81 comes into contact with the bottom surface of the first fitting groove 71. There is no reaction force on the tip. Similarly, since the height J2 of the second protrusion 80b is smaller than the depth H2 of the second fitting groove 72, the tip surface of the base portion 83 comes into contact with the bottom surface of the second fitting groove 72. There is no reaction force on the tip.

  On the other hand, since the first protrusion 80a fitted in the first fitting groove 71 has the width M1 of the first protrusion 80a larger than the width K1 of the first fitting groove 71. The stress concentrates on the elastic protrusion 82 where elastic deformation is most likely to occur. Due to the reaction force R1 acting on the elastic projection 82 from one side wall of the first fitting groove 71, the surface of the base 81 opposite to the elastic projection 82 is the other side of the first fitting groove 71. It is pressed against the side wall by pressure F1. Similarly, in the second protrusion 80b fitted in the second fitting groove 72, the width M2 of the second protrusion 80b is larger than the width K2 of the second fitting groove 72. Therefore, stress concentrates on the elastic protrusion 84 that is most likely to undergo elastic deformation. Due to the reaction force R <b> 2 that acts on the elastic projection 84 from one side wall of the second fitting groove 72, the surface of the base portion 83 opposite to the elastic projection 84 is the other side of the second fitting groove 72. It is pressed against the side wall by pressure F2.

  Such a fitting state between the first fitting groove 71 and the first protruding portion 80a, and a fitting state between the second fitting groove 72 and the second protruding portion 80b. Acts in the same manner over the entire longitudinal range of the cross-shaped seal 80. Therefore, the entire surface of the first protrusion 80a of the cross-shaped seal 80 on the side opposite to the elastic protrusion 82 is brought into pressure contact with the inner side surface of the first fitting groove 71, and the elasticity of the second protrusion 80b. The entire side surface opposite to the protruding portion 84 is pressed against the inner side surface of the second fitting groove 72. Thereby, the 1st protrusion part 80a and the 2nd protrusion part 80b of the cross-shaped seal | sticker 80 are extended substantially linearly, respectively, without wavy. Therefore, a uniform sealing property can be ensured over the entire circumference of the cruciform seal 80, and unevenness of the sealing performance over the entire length of the cruciform seal 80 can be eliminated.

  At the same time, the opening end surface of the upper case 7 is pressed against the inner and outer sealing portions 80c and 80d of the cross-shaped seal 80, and the opening end surface of the middle case 9 is pressed from the lower side. Therefore, it is possible to reliably prevent water, dust, and the like from entering from the joint surfaces, and to achieve sufficient sealing performance.

  14 and 15 show a second embodiment of the seal member according to the present invention. The sealing member shown in this embodiment has a T-shaped cross section. This T-shaped seal 90 is obtained by eliminating the second sealing portion 80d in the cross-shaped seal 80 shown in the above embodiment, and the other configurations are the same. That is, the T-shaped seal 90 is constituted by the first ridge portion 80a, the second ridge portion 80b, and the sealing portion 80c. As the second sealing portion 80d is abolished, one side edge of the first fitting groove 71 of the upper case 7 is extended and the second fitting groove 72 of the middle case 9 is extended. One side edge is also extended so that the front end surfaces thereof can come into contact with each other. By adopting such a configuration, the same effect as in the above embodiment can be obtained.

  16A to 16F show other embodiments of the seal member according to the present invention. A seal member 91 shown in FIG. 16A is formed by forming the elastic projections 82 and 84 of the cross-shaped seal 80 shown as the first embodiment as elastic projections 91a and 91b having a rectangular projection shape. It is. The seal member 92 shown in FIG. 16B is formed by forming the elastic protrusions 82 and 84 as elastic protrusions 92a and 92b having a trapezoidal cross-sectional shape. Further, the seal member 93 shown in FIG. 16C is formed by forming the elastic protrusions 82 and 84 as elastic protrusions 93a and 93b having a circular arc-shaped protrusion.

  Further, the seal member 94 shown in FIG. 16D is formed by forming the elastic protrusions 82 and 84 of the T-shaped seal 90 shown as the second embodiment as elastic protrusions 94a and 94b having a protrusion shape having a rectangular cross section. It is a thing. The seal member 95 shown in FIG. 16E is formed by forming the elastic protrusions 82 and 84 as elastic protrusions 95a and 95b having a trapezoidal cross-sectional shape. Further, in the seal member 96 shown in FIG. 16F, the shape of the elastic protrusions 82 and 84 is formed as elastic protrusions 96a and 96b having a protrusion shape having an arcuate cross section. By forming the elastic protrusions in the shapes as shown in these embodiments, the same effects as in the above embodiments can be obtained.

  The blood glucose meter 1 shown in this embodiment can be used as follows, for example. To collect blood, first, a fingertip is punctured with a dedicated puncture device, and a small amount (for example, about 0.3 to 1.5 μL) of blood is allowed to flow out from the puncture portion onto the skin. The tip of the nozzle portion 52 of the sampling tool 50 attached to the tip of the blood glucose meter 1 is brought into contact with the small amount of blood that has risen at the fingertip. As a result, the blood at the fingertip enters the collection hole 54 through the concave groove 52 a, is sucked by the capillary phenomenon, flows inward, and reaches the center of the test paper 57 accommodated in the cylindrical portion 53. The blood that reaches the test paper 57 soaks into the inside from the surface and spreads radially outward.

  Simultaneously with the development of the blood, the glucose in the blood and the reagent carried on the test paper 57 start to react, and color is displayed according to the amount of glucose. The blood glucose level can be determined by measuring (coloring) the color of the colored test paper 57 and measuring the intensity (shading) of the coloration.

  When the sampling tool 50 is ejected from the sampling tool mounting portion 43 after the measurement is completed, for example, the user grips the trunk 11 and aligns the thumb with the depression of the eject operating element 36 and presses the eject operating element 36 forward. It is only necessary to slide the eject member 35 forward. At this time, when the eject operator 36 is pressed forward from the state shown in FIG. 9, the slide member 35 integrated therewith is moved by the same distance. As a result, the tips of the pair of frame portions 61 provided at the tips of the eject member 35 press the ends of the engaging claws 55 of the sampling tool 50 forward, and the sampling tool 50 is detached from the sampling tool mounting portion 43. Thereby, the collection tool 50 can be discarded in a predetermined disposal container.

  In this case, an operator who operates the blood glucose meter 1 can easily separate and discard the collection tool 50 from the blood glucose meter 1 by one-hand operation while holding the blood glucose meter 1 with one hand. In addition, the casing 2 is provided with a bending portion 28, an eject operator 36 is disposed on the convex side of the bending portion 28, and a sampling tool mounting portion 43 is disposed at the tip of the bending portion 28, so that the ejection operation is performed. The sampling tool 50 is released in the direction in which the child 36 moves. Therefore, the aim of the discharge direction can be set in a desired space portion, and the sampling tool 50 can be easily and reliably discharged into the space portion. Therefore, the disposal of the collection tool 50 can be performed easily and quickly while maintaining safety without touching the collection tool 50.

  In addition, the collection tool 50 can be discarded using the collection tool case 70. In this case, first, the collection tool case 70 in which the collection tool storage section is empty is put on the collection tool 50 mounted on the collection tool mounting section 43. In this state, the eject manipulator 36 is pressed to slide the eject member 35 forward. As a result, the collection tool 50 is pushed forward as described above, and is removed from the collection tool mounting portion 43 while being stored in the collection tool case 70. Accordingly, the disposal of the sampling tool 50 can be performed safely, easily and quickly without the operator touching the sampling tool 50.

  According to the present invention, the seal member is formed in a cross shape or a T shape, and the elastic protrusion portion that is continuous in the longitudinal direction is provided on one side surface of the two protruding ridge portions that face each other. . Therefore, when these protrusions are fitted into the fitting grooves, the elastic protrusions are elastically deformed. At this time, the reaction force received from one side of the fitting grooves causes the opposite surface of the protrusions to be fitted into the fitting grooves. It is press-contacted to the other side surface. As a result, the entire one surface of the seal member is pressed against the one side surface of the fitting groove, so that the sealing performance can be set substantially uniformly over the entire length in the length direction of the seal member. The water can be reliably prevented from entering the housing during cleaning or the like. In addition, a large load is not required to overlap the two cases, and once assembled, the housing can be prevented from being separated by the holding force of the seal itself.

  As described above, the component measuring apparatus of the present invention is not limited to the above-described embodiment, and various modifications and changes can be made in the configuration, shape, material, and the like without departing from the configuration of the present invention. Needless to say.

  In the above embodiment, blood has been described as a body fluid. However, the present invention is not limited to this, and may be lymph fluid, spinal fluid, saliva, or the like. Furthermore, glucose (blood glucose level) has been described as a component to be measured in body fluid (blood), but is not limited thereto, and examples thereof include cholesterol, uric acid, creatinine, lactic acid, hemoglobin (occult blood). These may be various alcohols, various sugars, various proteins, various vitamins, various inorganic ions such as sodium, and environmental hormones such as PCB and dioxin. Furthermore, in the above-described embodiments, the amount of the predetermined component has been described. However, the property of the predetermined component may be measured, and both the amount and the property of the predetermined component may be measured. There may be.

  In the above embodiment, the upper case is described as the first case and the middle case is described as the second case. However, the upper case is defined as the first case and the lower case is defined as the second case. It can also be set as the structure which interposes a sealing member in between.

  1 .... blood glucose meter (component measuring device), 2 .... casing, 3 .... power supply, 4 .... measuring part, 7 .... upper case (first case), 8 .... lower case, 9 .... Middle case (second case) 71... First fitting groove 72.. Second fitting groove 80.. Cross-shaped seal (seal member) 80 a. 80b, second protrusion, 80c, 80d, sealing portion, 81, 83, base portion, 82, 84, elastic protrusion, 90, T-shaped seal (seal member), 91, 92 , 93, 94, 95, 96 .. seal member, 91a, 91b, 92a, 92b, 93a, 93b, 94a, 94b, 95a, 95b, 06a, 96b,.

Claims (5)

A first case and a second case separably engaged;
An endless continuous seal member interposed in a butting portion where the opening end surfaces of the first case and the second case are in contact with each other;
The opening end surface of the first case is provided with a first fitting groove that is endless and has a pair of parallel inner side surfaces, and
The opening end surface of the second case is provided with an endless second fitting groove having a pair of parallel inner side surfaces,
The seal member is fitted in the first fitting groove and is continuous in the circumferential direction, and the second protrusion is fitted in the second fitting groove and is continuous in the circumferential direction. A protrusion, and a sealing portion interposed between the first case and the second case and continuous in the circumferential direction,
The first protrusion is formed to protrude laterally from one outer side surface of the base portion, a base portion having a pair of outer side surfaces smaller than and parallel to the first fitting groove, and An elastic protrusion that is elastically deformed in a state of being fitted in the first fitting groove and presses the other outer side surface of the base portion against the inner side surface of the first fitting groove facing the other outer side surface. And
The second protrusion is formed to protrude laterally from one outer side surface of the base portion, a base portion having a pair of outer side surfaces smaller than and parallel to the second fitting groove, and An elastic protrusion that is elastically deformed while being fitted in the second fitting groove and presses the other outer side surface of the base portion against the inner side surface of the second fitting groove facing the other outer side surface. And a component measuring device. The component measuring apparatus according to claim 1, wherein the elastic protrusion has a semicircular cross-sectional shape. The component measuring apparatus according to claim 1, wherein the elastic protrusion has a rectangular cross-sectional shape. The component measuring apparatus according to claim 1, wherein the elastic protrusion has a triangular cross-sectional shape. The component measuring apparatus according to claim 1, wherein the component measuring apparatus is a blood glucose meter that measures glucose concentration in blood.

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