JP4018048B2 - Sample plate and measurement / analysis equipment - Google Patents

Description

  The present invention relates to a sample plate and a measurement / analysis device used in a measurement / analysis device, and more particularly to a sample plate and a measurement / analysis device for a measurement / analysis device that performs component measurement / analysis such as a urine test and a blood test. Is.

  Measuring / analyzing devices used for urinalysis, blood tests, etc. have a transfer carrier that is mounted in a replaceable manner so that a strip-shaped test piece can be replaced, and the test piece is measured by placing the test piece on the transfer carrier.・ A component carrier that moves back and forth to the component measurement / analysis unit in the analyzer (for example, Patent Document 1) and a microplate having a plurality of wells (specimen holding units) that can be exchanged and have a plate carrier that moves linearly. In addition, there is a technique in which a microplate is placed on a plate carrier and the wells of the microplate are reciprocally conveyed to a component measurement / analysis unit in a measurement / analysis apparatus (for example, Patent Document 2).

  In a reciprocating type measuring / analyzing apparatus as shown in Patent Documents 1 and 2, a test piece and a microplate are attached to the apparatus-side carrier in a replaceable manner, and the test piece and the microplate are transferred and conveyed by the carrier. Since this is done, the structure becomes complicated. In this measuring / analyzing apparatus, it is necessary to improve both the test piece with respect to the carrier, the mounting position accuracy of the microplate, and the transporting position accuracy of the carrier in order to transport the specimen to the component measurement / analysis unit with high accuracy. Yes, the structure becomes even more complicated.

  In contrast to this, the measurement / analyzer is provided with a linear sample plate transfer passage that is continuous with the sample plate insertion port through which the sample plate can be inserted / removed and the sample plate insertion port so as to reciprocate the sample plate. An electric motor-driven pinion that meshes with the rack teeth of the rack gear formed on the sample plate may be arranged on one side of the sample plate transfer passage, and the sample plate may be directly transported by the rack and pinion mechanism. It is done.

  In such a measuring / analyzing device using a rack and pinion mechanism, by inserting the sample plate into the sample plate insertion port, the rack teeth of the sample plate mesh with the pinion in the measuring / analyzing device, and the sample plate is inserted. By pulling out the sample plate from the mouth, the rack teeth of the sample plate are disengaged from the pinion in the measurement / analyzer. In such a detachable rack-and-pinion mechanism, the engagement and disengagement of the rack teeth with the pinion frequently occur every time the sample plate is inserted into and removed from the sample plate insertion port.

  In the detachable rack and pinion mechanism, the rack teeth mesh with the pinion by the advancement of the rack gear (rack gear plate). There is a possibility that the gears collide with each other and become in a gear lock state due to biting.

  In contrast, a notch is provided on the front end side of the rack gear plate, and the rack teeth on the front end side are supported by a cantilever that can be elastically deformed by the incision, and the teeth of the rack teeth and the pinion collide with each other at the time of meshing. In this case, the rack-and-pinion prevents the rack tooth from escaping from an improper meshing with the pinion due to elastic deformation of the cantilever beam, thereby avoiding the gear lock state. There is a mechanism (for example, Patent Document 3).

  In order to prevent the pinion and rack gear from being locked reliably and reduce the pinion driving force required to unlock the pinion, reduce the width in the toothed direction so that the cantilever can be elastically deformed with low load. There is a need. For this reason, there exists a problem that a cantilever part is easy to be damaged.

  When such a cantilever structure is applied to the specimen plate, the cantilever portion of the elastically deforming portion is damaged when the specimen plate is taken out of the measuring / analyzing apparatus, or when the specimen plate is stored and handled outside the apparatus. If there is a fear that the damaged part of the specimen plate is sharp, there is a risk of injury. Injuries in the medical field can cause secondary infection due to injury.

On the other hand, if the thickness of the cantilever in the toothpick direction is increased, there arises a problem that the drive system of the measuring / analyzing apparatus cannot be made compact. Further, if the elastically deforming portion is a cantilever beam, molding shrinks at the time of resin molding and the arrangement of rack teeth of the rack gear is deformed, so that highly accurate conveyance cannot be performed.
JP-A-11-38013 JP 63-8537 A JP 2002-327822 A

  An object of the present invention is to provide a sample plate and a measurement / analysis apparatus that are safe to handle, do not become inoperable due to gear locking, and do not increase the size of the drive system of the measurement / analysis apparatus.

  A sample plate according to the present invention has a sample holding portion and is a strip-shaped sample plate inserted in a sample plate insertion port of a measurement / analyzer so as to be detachable. It has a rack gear by a series of rack teeth that detachably engages with a pinion provided in the analyzer, and a long hole penetrates along the arrangement direction of the rack teeth on the insertion end side with respect to the specimen plate insertion port The long hole is formed with a cantilever portion that can be elastically deformed between one side of the long hole and the bottom side of the rack tooth.

  In the sample plate according to the present invention, preferably, the long hole has a length that extends over a plurality of rack teeth of the rack gear, and the rack tooth that first meshes with a pinion provided in the measurement / analyzer is the long plate. Located in the middle of the hole.

  In the sample plate according to the present invention, preferably, the other side surface in the longitudinal direction is a movement reference plane parallel to the pitch line of the rack gear, and the sample plate insertion port is included in the side surface on the movement reference plane side. The insertion end side with respect to is a tapered inclined surface.

  The specimen plate according to the present invention is preferably made entirely of a synthetic resin molded product.

  In addition, the measuring / analyzing apparatus according to the present invention has a linear sample plate transfer passage that is continuous with the sample plate insertion port into which the sample plate according to the above-described invention is removably inserted and receives the sample plate in a reciprocating manner. A pinion that meshes with the rack teeth formed on the sample plate is disposed on one side of the sample plate transfer passage, and includes an electric motor that rotationally drives the pinion.

  According to the sample plate and the measurement / analysis apparatus according to the present invention, when the rack teeth and the pinion tip sides collide with each other when the rack gear and the pinion are engaged, the both-end supported beam portion due to the long hole is elastically deformed, By changing the contact angle between the rack teeth and the pinion, the rack teeth are prevented from escaping from improper meshing with the pinion and being in a gear locked state.

  Since the elastically deforming portion is a doubly supported beam, the elastically deforming portion is not easily damaged when the specimen plate is stored and handled outside the measuring / analyzing apparatus. Further, the doubly supported beam portion can be made thin without sacrificing safety, the drive system of the measurement / analysis apparatus can be reduced in size, and the entire measurement / analysis apparatus can be made compact.

  1 to 6 show an embodiment in which the measurement / analysis apparatus according to the present invention is implemented as a hemoglobin measurement apparatus.

  As shown in FIG. 1, the hemoglobin measuring device has a lower case 10 and an upper cover 11, and a slot-shaped specimen plate insertion port 12 is formed on the front surface portion.

  On the upper cover 11, as a console, a sample selection switch 13, a measurement start switch 14, a sample plate presence / absence indicator lamp 16, a standby indicator lamp 17, a measurement preparation indicator lamp 18, a measurement indicator lamp 19, and a specimen number display section 20 A measurement total number display unit 21 and a measurement result (hemoglobin amount) display unit 22 are provided.

  A passage member 23 is fixedly attached to the lower case 10 in the front-rear direction in a horizontal state. The passage component member 23 is a belt-like body having a groove shape, and is screwed and fixed onto an upper plate 51 (see FIG. 3) of a drive unit 50 described later.

  The passage component member 23 defines a specimen plate transfer passage 24 by a concave groove. As shown in FIG. 6, the sample plate transfer passage 24 includes a passage bottom surface (concave groove bottom surface) 24A on which the sample plate 100 is placed, and one side of the sample plate transfer passage 24 (left side as viewed from the front). ) And a guide side surface (concave groove side surface) 24 </ b> B provided to guide the reciprocating movement of the strip-shaped sample plate 100 in the front-rear direction (longitudinal direction of the sample plate transfer passage 24).

  Roller supports 25, 26, and 27 are fixed to the upper part of the passage member 23 so as to straddle the specimen plate transfer passage 24 in the lateral direction. The roller support 25 is provided at a position close to the sample plate insertion port 12, and rotatably supports a pressing roller 29 positioned above the sample plate transfer passage 24 by a shaft 28. The roller support 26 is provided at a position deeper than the roller support 25 and rotates a pressing roller 30 positioned above the sample plate transfer passage 24 by a shaft (not shown) as shown in FIG. I support it as possible. The roller support 27 is provided at a position farther from the roller support 26 and rotatably supports a pressing roller (not shown) positioned above the sample plate transfer passage 24 by a shaft (not shown).

  A sample dropping unit 31 is provided at a first position (position between the roller supports 25 and 26) near the sample plate insertion port 12 in the longitudinal direction (front-rear direction) on the sample plate transfer passage 24. The sample dropping unit 31 drops a sample from a specific gravity needle containing the collected sample (blood) to the central portion in the passage width direction at the first position.

  At a second position (position between the roller supports 26 and 27) on the back side from the first position in the longitudinal direction (front-rear direction) on the sample plate transfer passage 24, hemoglobin is used as a component measurement / analysis unit. A measurement unit 32 is provided. The hemoglobin measuring unit 32 is based on an absorbance method in which the specimen is irradiated with light to quantitatively measure the hemoglobin concentration of the specimen.

  In the vicinity of the sample plate insertion port 12 in the sample plate transfer passage 24, a sample plate insertion sensor (a first sensor) that photoelectrically detects that the sample plate 100 has been inserted into the sample plate transfer passage 24 from the sample plate insertion port 12. Detection means) 33 is provided.

  On the guide side surface 24B side of the passage constituting member 23, it is photoelectrically detected that one of the sample holding units 101 to 105 (see FIG. 7) provided on the sample plate 100 is located directly below the sample dropping unit 31. A specimen dropping position sensor (second detection means) 34 is provided.

  In addition, on the guide side surface 24B side of the passage constituting member 23, it is photoelectrically indicated that one of the sample holding units 101 to 105 (see FIG. 7) provided on the sample plate 100 is located directly below the hemoglobin measuring unit 32. A measurement position sensor (third detection means) 35 for detection is provided.

  The sample dropping position sensor 34 and the measurement position sensor 35 both detect the edges of the notches 111 to 117 provided on the sample plate 100 with high accuracy. The sample plate insertion sensor 33, the sample dropping position sensor 34, and the measurement position sensor 35 are not limited to optical non-contact type sensors, but may be mechanical or contact type sensors such as limit switches.

  As shown in FIG. 3, a drive unit 50 is attached to the lower case 10. The drive unit 50 includes two upper and lower upper plates 51 and 52 that are fixedly connected to each other by a plurality of stud members 53 at an upper and lower interval.

  On the upper plate 51, there are pinions 56, 57 attached to pinion shafts 54, 55 as shown in FIG. As shown in FIG. 3, the pinions 56 and 57 are both provided on the other side (right side as viewed from the front) of the sample plate transfer passage 24, that is, on the side opposite to the guide side surface 24B. Meshes with a series of rack teeth 106 of a rack gear 108 formed on the side surface of the rack gear 108. Note that the pinion 56 is on the side of the sample plate insertion port 12, and the other pinion 57 is further on the back side of the sample plate transfer passage 24.

  The pinion shafts 54 and 55 both pass through the upper plate 51 in the vertical direction and are rotatably supported by the upper plate 51. As shown in FIG. 5, toothed timing pulleys 58 and 59 fixed to pinion shafts 54 and 55 are arranged in the space between the upper plate 51 and the lower plate 52, respectively. An endless timing belt 60 is stretched between the pulleys 58 and 59. As a result, the pinion shafts 54 and 55 rotate synchronously. Further, a tension roller 61 for adjusting the tension of the timing belt 60 is attached between the upper plate 51 and the lower plate 52 by a screw 62 so that the attachment position can be adjusted.

  A stepping motor 63 is attached on the upper plate 51. An output gear 65 is attached to the output shaft 64 of the stepping motor 63. The upper plate 51 is rotatably provided with an intermediate shaft 66 (see FIG. 3) passing through the upper plate 51 in the vertical direction. An intermediate gear 67 that meshes with the output gear 65 is fixed to the lower end of the intermediate shaft 66, and an intermediate gear 68 that meshes with the pinion 57 is fixed to the upper end of the intermediate shaft 66, as shown in FIG. Has been.

  Thereby, the rotation of the stepping motor 63 is transmitted to the pinion 57 by the output gear 65, the intermediate gear 67, the intermediate shaft 66, and the intermediate gear 68, and further, the pinion shaft 55, the timing pulley 59, the timing belt 60, and the timing pulley. 58, and is transmitted synchronously to the other pinion 56 by the pinion shaft 54.

  7 to 9 show one embodiment of a specimen plate used in the hemoglobin measuring device having the above-described configuration. The specimen plate 100 is a disposable type made of a synthetic resin molded product, and has a strip shape as shown in FIG.

  On the upper surface of the specimen plate 100, a plurality of, in this embodiment, five concave (well-like) specimen holders 101 to 105 are formed (molded) at predetermined intervals (equal intervals) in the longitudinal direction. ) The sample holders 101 to 105 are covered with a white cloth so that the sample is uniformly diffused.

  A rack gear 108 including a series of rack teeth 106 is integrally formed on one side surface of the specimen plate 100 in the longitudinal direction. The other side surface in the longitudinal direction of the specimen plate 100 is a linear flat guide reference surface 107 parallel to the pitch line P of the rack gear 108. Further, on the other side surface of the specimen plate 100, that is, the guide reference plane 107, as shown in FIG. 8, the positions of the specimen holders 101 to 105 are shown for the specimen holders 101 to 105, respectively. As marks, cutout portions 111 to 117 having a semi-recessed long hole shape are integrally formed at equal intervals.

  On the insertion end 100A side of the sample plate 100 with respect to the sample plate insertion opening 12, as shown in FIG. 7, long holes 121 are formed so as to penetrate along the arrangement direction of the rack teeth 106. Thus, a thin-walled (small-width) doubly supported beam portion 122 that can be elastically deformed is formed between one side 121A of the long hole 121 and the tooth bottom 106B side of the rack tooth 106.

  The long hole 121 has a length straddling a plurality of rack teeth 106 of the rack gear 108, and the rack tooth 106 x that first meshes with the pinion 56 is substantially in the middle of the long hole 121 as shown in FIG. 9. positioned. Among the series of rack teeth 106, the front side of the tip portion 106A of several (three) rack teeth 106 including the rack teeth 106x on the insertion end 100A side with respect to the specimen plate insertion port 12 is deleted to form an inclined surface 106C. ing. The tooth tip portion 106 </ b> A of the rack tooth 106 only needs to be cut off the moving range of the rotation radius G of the pinion 56.

  Further, as shown in FIG. 7, among the side surfaces of the sample plate 100 on the guide reference surface 107 side, the insertion end 100 </ b> A side with respect to the sample plate insertion port 12 is a tapered inclined surface 107 </ b> A.

  Next, the measurement operation of the hemoglobin measuring device having the above configuration will be described.

  The sample plate 100 is inserted from the sample plate insertion port 12 into the concave groove portion of the passage constituting member 23, that is, the sample plate transfer passage 24 with the insertion end 100 </ b> A in front. Then, the sample plate 100 slides on the passage bottom surface 24A of the sample plate transfer passage 24, and is then pressed against the passage bottom surface 24A by the pressing roller 29 of the roller support 25. Thereby, the sample plate 100 is inserted into the back side of the passage constituting member 23 without rattling in the vertical direction.

  The insertion of the sample plate 100 into the sample plate insertion port 12 is easy because the insertion end 100A side with respect to the sample plate insertion port 12 of the side surface of the sample plate 100 on the guide reference surface 107 side is a tapered inclined surface 107A. Can be done.

  The pressing rollers 29, 30 and the like are only on the upper surface of the sample plate 100. However, in order to make the sample plate 100 move smoothly, the sample plate 100 may be sandwiched from both the upper surface and the lower surface. Good.

  As described above, when the sample plate 100 is inserted and the insertion end 100 </ b> A is engaged with the pressing roller 29, the sample plate insertion sensor 33 located almost immediately below the pressing roller 29 detects the insertion of the sample plate 100. As a result, the sample plate presence / absence indicator lamp 16 is turned on, and the stepping motor 63 is driven to rotate forward. As a result, the pinions 56 and 57 start normal rotation at the same speed.

  When the sample plate 100 is further inserted, the rack teeth 106x and 106 of the sample plate 100 mesh with the pinion 56. By this engagement, the guide reference surface 107 of the specimen plate 100 is pressed against the guide side surface 24B of the passage constituting member 23, and the rattling in the lateral direction is eliminated.

  In the meshing between the rack teeth 106 and the pinion 56, first, as shown in FIG. 10A, the first rack tooth 106x does not reach the rotation radius G of the pinion 56. When is in this position, no biting occurs. When the specimen plate 100 is further inserted, the rack teeth 106x reach the rotation radius G of the pinion 56 as shown in FIG. 10B, but the tooth tip portion 106A of the rack teeth 106x rotates the pinion 56. Since it has been cut off by the moving range of the radius G, biting does not occur. Further, when the specimen plate 100 is inserted, the rack teeth 106x and the pinion 56 normally mesh as shown in FIG.

  As described above, since the tooth tip portion 106A of the first rack tooth 106x is scraped by the moving range of the rotation radius G of the pinion 56, biting does not occur, but the rack tooth 106x is extremely rare. And the tip of the pinion 56 may collide with each other.

  In this case, as indicated by a broken line in FIG. 11, the double-supported beam portion 122 formed by the long hole 121 is elastically deformed (flexed) toward the guide reference surface 107, and the rack teeth 106 x and the pinion 56 contact each other. By changing the angle, it is possible to prevent the rack teeth 106x from escaping from improper meshing with the pinion 56 and entering a gear locked state.

  Since the elastically deforming portion is the double-supported beam portion 122, the elastically deformable portion, that is, the double-supported beam portion 122 is hard to be damaged when the specimen plate 100 is stored and handled outside the apparatus, which impairs safety. The double-supported beam portion 122 can be made thin without any problem. As a result, the drive system of the measurement / analysis apparatus can be reduced in size, and the entire measurement / analysis apparatus can be made compact.

  When blood or the like is handled as a specimen, in particular, it is necessary to surely prevent the laboratory technician from being injured or secondary infection from the wound with the damaged specimen plate 100. Improvement from such a shape that tends to be lost to a shape that is difficult to be lost by the double-supported beam portion 122 greatly contributes to the improvement of safety.

  When the rack teeth 106x and 106 of the sample plate 100 are normally engaged with the pinion 56, the sample plate 100 is restrained in the lateral direction by the pinion 56 and the guide side surface 24B, and in the vertical direction by the passage bottom surface 24A and the pressing roller 29. In the restrained state, the pinion 56 is moved forward (moved forward) with high accuracy on the passage bottom surface 24A of the specimen plate transfer passage 24 by the forward rotation.

  By this forward movement, the rack teeth 106 of the sample plate 100 are also engaged with the pinion 57 on the back side, and the sample plate 100 is also pressed by the pressing roller 30 of the roller support 26 and the pressing roller (not shown) of the roller support 27. It is pressed against 24A, and the straight movement performance of the specimen plate 100 is further improved.

  When the signal output from the measurement position sensor 35 rises for the third time, that is, when the measurement position sensor 35 detects the edge of the notch 113, the forward rotation driving of the pinions 56 and 57 by the stepping motor 63 is stopped. As a result, the forward movement of the sample plate 100 stops when the center of the sample holding unit 101 of the sample plate 100 is located at the center position of the hemoglobin measuring unit 32.

  When the forward movement of the sample plate 100 stops, the sample number “1” by the sample holding unit 101 is displayed on the sample number display unit 20, and the hemoglobin measurement unit 32 measures the empty sample holding unit 101 on which no sample is dropped. Do. When the measurement of the initial value is completed, the standby indicator lamp 17 blinks.

  When measuring the sample (blood), the measurement start switch 14 is turned on (pressed). As a result, the standby indicator lamp 17 is turned off, the measurement preparation indicator lamp 18 is turned on, the stepping motor 63 is driven in reverse rotation, and the specimen plate 100 moves backward in the specimen plate transfer passage 24 by the reverse rotation of the pinions 56 and 57. To do.

  After the backward movement, when the specimen dropping position sensor 34 detects the edge of the notch 113, the reverse driving of the pinions 56 and 57 by the stepping motor 63 is stopped. Thereby, when the center of the sample holder 101 of the sample plate 100 is located at the center position of the sample dropping unit 31, the backward movement of the sample plate 100 is stopped. As a result, the waiting indicator lamp 17 is turned on, and the sample (blood) is waiting to be dropped.

  When the sample is dropped from the sample dropping unit 31 to the sample holding unit 101 of the sample plate 100, the standby indicator lamp 17 is turned off, the measuring indicator lamp 19 blinks, and the stepping motor 63 is driven to rotate forward again to rotate the pinion. The specimen plate 100 moves forward in the specimen plate transfer passage 24 by forward rotation of 56 and 57.

  After the forward movement, when the measurement position sensor 35 detects the edge of the notch 113 again, the forward drive of the pinions 56 and 57 by the stepping motor 63 is stopped. As a result, the forward movement of the sample plate 100 stops when the center of the sample holding unit 101 of the sample plate 100 is located at the center position of the hemoglobin measuring unit 32.

  When the forward movement of the sample plate 100 stops, the hemoglobin measuring unit 32 irradiates the sample on the sample holding unit 101 with light, and measures the hemoglobin concentration of the sample by the absorbance method. When the measurement of the hemoglobin concentration is completed, the measurement result, that is, the hemoglobin concentration (hemoglobin amount (g / dl)) of the sample in the sample holding unit 101 is displayed on the measurement result display unit 22, and the measurement indicator lamp 19 is turned off. To do. Further, the total number displayed on the total measurement number display unit 21 is incremented by one.

  When the measurement of the sample held in the sample holding unit 101 is completed, next, the measurement of the sample held in the sample holding unit 102 is performed similarly to the notch 114 by the sample dropping position sensor 34 and the measurement position sensor 35. By the edge detection, the center of the sample holding unit 102 is positioned at the center position of the hemoglobin measuring unit 32 and the hemoglobin measuring unit 32 measures the empty sample holding unit 102, and then the center of the sample holding unit 102 is the sample. A specimen is dropped from the specimen dropping section 31 at the center position of the dropping section 31, and thereafter, the center of the specimen holding section 102 is again positioned at the center position of the hemoglobin measuring section 32, and the hemoglobin measuring section 32 is moved to the specimen holding section. A series of operations for measuring the sample dropped on 102 is repeated.

  This series of operations is sequentially performed in the same manner for the sample holders 103, 104, and 105. When all the examinations of the specimen holders 101 to 105 are completed, the stepping motor 63 is driven in reverse, and the specimen plate 100 is discharged from the specimen plate transport passage 24 by the reverse rotation of the pinions 56 and 57. Completion of the discharge of the sample plate 100 is detected by the sample plate insertion sensor 33, and the sample plate presence / absence indicator lamp 16 is turned off. It should be noted that an examination end sound may be emitted when the specimen plate insertion sensor 33 detects the completion of the ejection of the specimen plate 100.

  Note that it is not essential to delete the tooth tip portions 106A of several rack teeth 106 including the rack teeth 106x on the insertion end 100A side with respect to the specimen plate insertion port 12. As shown in FIG. The rack teeth 106 including the side rack teeth 106x may have a normal shape.

  Also in this case, when the rack teeth 106x and the tooth tip sides of the pinion 56 collide with each other, the both-end supported beam portion 122 by the long hole 121 is elastically deformed (flexed) toward the guide reference plane 107, and the rack teeth 106x and the pinion 56 are As a result of the change in the contact angle with the pinion 56, the rack teeth 106x are prevented from escaping from improper meshing with the pinion 56 and being in a gear locked state.

  Although the present embodiment has been described with reference to a hemoglobin measuring device, it should be understood that the present invention can be applied to other analyzers, memory cards, and the like.

It is a perspective view which shows the state before the sample board insertion of one Embodiment which implemented the measuring / analyzing apparatus by this invention as a hemoglobin measuring apparatus. It is a perspective view which shows the state after the sample board insertion of one Embodiment which implemented the measuring / analyzing apparatus by this invention as a hemoglobin measuring apparatus. It is a perspective view of the principal part of the hemoglobin measuring device by one embodiment. It is a top view of the drive unit of the hemoglobin measuring device by one embodiment. It is a side view of the drive unit of the hemoglobin measuring device by one embodiment. It is an enlarged plan view of the rack and pinion portion of the hemoglobin measuring device according to one embodiment. It is a top view which shows one Embodiment of the sample board by this invention. It is a rear view of the sample board by one embodiment. It is an enlarged plan view of the principal part of the sample board by one embodiment. (A)-(c) is explanatory drawing which shows the meshing process of the rack and pinion by one Embodiment. It is explanatory drawing which shows mesh | engagement of the rack and pinion by one Embodiment. It is explanatory drawing which shows mesh | engagement of the rack and pinion by other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lower case 11 Upper cover 12 Specimen plate insertion port 23 Passage component 24 Specimen plate transfer passage 24A Passage bottom surface 24B Guide side surface 29 Pressing roller 31 Specimen drop part 32 Hemoglobin measurement part 33 Specimen plate insertion sensor 34 Specimen drop position sensor 35 Measurement Position sensor 50 Drive unit 56, 57 Pinion 63 Stepping motor 100 Specimen plate 101-105 Specimen holding part 106, 106x Rack tooth 106C Inclined surface 107 Guide reference surface 107A Inclined surface 111-117 Notch 121 Long hole 122 Both-end supported beam part

Claims (5)

In the sample plate that has a sample holder and is inserted in the sample plate insertion port of the measurement / analyzer so that it can be inserted and removed,
It has a strip shape and has a rack gear with a series of rack teeth that detachably engages with a pinion provided in the measurement / analysis device on one side in the longitudinal direction,
On the insertion end side with respect to the specimen plate insertion port, a long long hole is formed penetrating along the arrangement direction of the rack teeth, and by the long hole, between one side of the long hole and the bottom side of the rack tooth, A specimen plate characterized in that an elastically deformable doubly supported beam portion is formed.   The long hole has a length that spans a plurality of rack teeth of the rack gear, and a rack tooth that first meshes with a pinion provided in the measuring / analyzing device is located in an intermediate portion of the long hole. The specimen plate according to claim 1.   The other side surface in the longitudinal direction is a movement reference surface parallel to the pitch line of the rack gear, and the side of the movement reference surface side has a tapered inclined surface on the insertion end side with respect to the specimen plate insertion port. The specimen plate according to claim 1 or 2, wherein   The specimen plate according to any one of claims 1 to 3, wherein the whole is made of a synthetic resin molded product.   The sample plate according to any one of claims 1 to 4, wherein the sample plate is inserted into the sample plate insertion port so that the sample plate can be inserted and removed, and has a linear sample plate transfer passage that reciprocally receives the sample plate, A measuring / analyzing apparatus comprising a pinion that meshes with the rack teeth formed on the sample plate on one side of the sample plate transfer passage, and includes an electric motor that rotationally drives the pinion.

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