JPS62196773A - Bar code reading structure - Google Patents

Abstract

PURPOSE:To attain data reading operation simply with an instrument placing on a table by inserting and pulling out a bar code film in oblique direction, that is, in curved form, to the instrument. CONSTITUTION:When pulling out the tip of a film 2 coming out from an opening 12 for pulling out, light is projected from a light emission element 31 on the data bar 21 (and clock bar 22) of the bar code film 2 that passes successively. The projected light is received by a photo-electric element 33 through a slit hole 39 of a shielding film 38, and calibration curve data recorded in the bar code are read by the quantity of received light. The bar code film 2 can be inserted and pulled out from an opening 11 for insertion provided on the upper face of an instrument 1 to the opening 12 for pulling out, that is, in oblique direction to the instrument 1 smoothly with the instrument placed, for instance, on a table.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is applicable to barcode reading of a biochemical measuring instrument, which allows the instrument to read calibration curve data of test strips used when measuring blood sugar, for example. Regarding structure.

(b) Conventional technology The test strips used in biochemical measuring instruments such as blood sugar level are
The properties of the reagents differ slightly depending on the production loft. For this reason, even if the test blood sugar amount is the same, test strips produced at different lofts will cause errors in the measured blood sugar levels. Therefore,
Usually, test strips sold are accompanied by a barcode film that records the calibration curve data corresponding to the test strip.
When in use, the calibration curve data of this barcode film is read into the meter in advance, and an appropriate measurement value is measured using the calibration curve corresponding to the test paper used.

FIG. 3 shows a bar code reading structure installed in a conventional meter.

A linear through-hole 51 for inserting a barcode film is formed at the front end of the meter 5, penetrating from the top surface of the meter 5 to the bottom surface,
The upper end of the through hole 51 is an insertion opening 54 and the lower end is an opening 55 for extraction, and a light receiving element 52 and a light emitting element 53 are disposed facing each other on both sides of the through hole 51.

Further, in correspondence with the drawer opening 55, a recess 56 surrounding the opening 55 is formed on the bottom surface of the meter 1.

In use, the barcode film 2 is inserted through the top opening (insertion opening) 54 of the meter 5, and the leading end of the film 2 is exposed at the end of the drawer opening 55 on the bottom of the meter. Then, by turning on the data reading switch of the meter 1, grasping the leading edge of the film exposed in the concave portion 56 on the bottom of the meter 5, and pulling it outward, the data per information recorded on the film is received and the light is emitted. The calibration curve of the test strip that will be read by the sensor consisting of the element and used from now on is stored in the meter.

(C) Problems to be Solved by the Invention In the conventional barcode reading structure described above, the film passage (W hole) through which the barcode film is inserted has a vertical shape extending from the top surface of the meter toward the bottom surface. .

For this reason, insert the barcode film from the top of the instrument.
To pull out the film from the bottom, the entire instrument must be lifted up, and reading the calibration curve data requires both hands, which not only makes operation inconvenient, but also poses the risk of the instrument falling and being damaged when the film is pulled out. There were some disadvantages.

In addition, the receiving and light emitting elements that make up the data reading sensor are
Because it is arranged perpendicularly to the vertical through hole,
There are disadvantages such as the data reading mechanism inside the meter body being bulky and the meter itself not being able to meet the demands for ultra-thinness.

This invention solves the above-mentioned problems of conventional devices, and provides a barcode reading structure for a biochemical measuring instrument that makes the barcode film reading operation simple and the instrument itself ultra-thin. The purpose is to provide

(d) Means and operation for solving the problem In order to achieve this object, the barcode reading structure of the present invention has the following configuration.

The barcode reading structure is such that a film insertion hole through which a barcode film is inserted is provided at an appropriate location in the instrument body, and a light receiving element and a light emitting element are arranged facing each other on both sides of this film insertion hole. It is formed into a curved shape with one end opening on the top surface of the instrument and the other end opening on one end surface of the instrument, and receiving/emitting elements arranged opposite to each other on both sides of this curved film insertion hole are attached to the instrument body. It has a structure that is tilted at a certain angle with respect to the bottom surface.

In the barcode reading structure having such a configuration, the barcode film is inserted in a curved manner from the top opening of the meter toward one end surface of the meter.

Therefore, the leading edge of the film comes out into the front opening (drawer opening) of the instrument, so when drawing out the film, the instrument can be placed on a desk, for example, and the film can be removed without having to lift the instrument itself. The tip can be pulled outward, making it extremely easy to operate. Furthermore, the receiver and light emitting elements are each arranged with their front axes inclined at a certain angle with respect to the horizontal line (the bottom surface of the instrument). Therefore, since the data reading sensor (receiver, light emitting part) is tilted within the instrument, the height position becomes lower (and the instrument itself can be made ultra-thin).

(E) Embodiment FIG. 1 is a sectional view showing a specific embodiment of a barcode reading structure of a biochemical measuring instrument according to the present invention.

The barcode reading structure is installed inside the front end of the instrument 1 as shown in FIG. are formed respectively. Between this insertion opening 11 and the drawer opening 12 there are both openings 11.12.
A barcode reading mechanism 3 is provided which continuously reads barcodes.

As shown in FIG. 1, the barcode reading mechanism 3 has a curved piece 32 equipped with a light-emitting element 31 and a curved piece 34 equipped with a light-receiving element 33 facing each other with a slight gap therebetween, and a barcode film is placed between the opposing sides. 2 insertion passages (curved film insertion holes) 35. The insertion passage 35 of the barcode film 2 has one end communicating with the insertion opening II of the meter 1, and the other end communicating with the drawer opening 12.

The pair of curved pieces 32 and 34 are curved with the same curvature. Each curved piece has a receiving portion 3 perpendicular to the insertion passage 35.
6.36 is formed, and a light emitting element 31 and a light receiving element 33 are arranged in the receiver part 36, respectively. Also,
A light emitting/receiving hole 37.37 that passes through the curved piece 32.34 is opened in the receiver portion 36, and the opening surface of the light emitting/receiving hole 37 is exposed to the insertion passage 35.

The receiver and light emitting elements 31 and 33 are arranged to face each other with the insertion passage 35 in between and with the light emitting and receiving holes 37 corresponding to each other. The receiver and light emitting elements 31 and 33 are each fixed with their optical axes tilted at approximately 45 degrees (approximately 45 degrees) with respect to the horizontal line (the bottom surface of the instrument).

Further, on the curved piece 34 on the side of the light receiving element 33, the light receiving element 33
(light-receiving element 33
A curved shielding film 38 (surrounding the exiting surface of the shield) is attached. A light passing slit hole 39 is formed in the center of the shielding film 38 and is perpendicular to the insertion passage 35 .

Further, the insertion passage 35 is provided with an erroneous insertion prevention piece 40 whose one end engages with the curved piece 34 on the light receiving element side and whose other end extends toward the drawer opening 12 side.
is normally biased toward the bottom of the passage 35. Also,
A film insertion detector 41 is arranged at a distance slightly away from the tip of the erroneous insertion prevention piece 40 in correlation with the erroneous insertion prevention piece 40.

In the barcode reading mechanism having such a configuration, the barcode film 2 is inserted through the insertion opening 11 of the meter 1. At this time, the leading end of the film 2 enters in a curved manner along the insertion passage 35, and passes through the sensor section, that is, the receiver, and the light emitting section 31, 33 while being pressed toward the light emitting element 31 side by the f4 shielding film 38.

Further, when the leading end of the barcode film 2 passes under the erroneous insertion prevention piece 40, the erroneous insertion prevention piece 40 is pushed upward against the biasing force of the spring. As a result, the tip of the incorrect insertion prevention piece 40 comes into contact with the film insertion detector 41,
The detector 41 is activated. On the contrary, barcode film 2
When inserted from the drawer opening 12 side, the tip of the erroneous insertion prevention piece 40 substantially blocks the insertion passage 35 and prevents insertion.

In this way, the leading end of the film 2 emerges from the drawer opening 12. In this state, read switch 13 of the meter
When turned on, the data reading mechanism 3 operates.

When the leading end of the film 2 that emerges from the drawer opening 12 is pulled out, light is projected from the light emitting element 31 onto the data bar 21 (and clock bar 22) of the barcode film 2 passing sequentially. The light receiving element 33 receives the light through the slit hole 39 of the shielding film l, 38,
The calibration curve data (characteristic data of the test strip to be used) recorded on the barcode is read based on this amount of received light.

Thus, the barcode film 2 is inserted from the insertion opening 11 provided on the top surface of the instrument 1 into the drawer opening 12 at the front end, that is, when the instrument 1 is placed on a desk, for example. It can be smoothly inserted and pulled out diagonally.

(f) Effects of the Invention As described above, in this invention, an insertion opening for inserting the barcode film into the top surface of the meter and a drawer opening at the end surface are provided, and the barcode film is inserted into the meter in a curved shape. , I decided to have him withdraw it.

According to this invention, the barcode film is used for measuring instruments (equipment).
Since it is inserted and pulled out in an oblique direction, that is, in a curved manner, there is no need to lift the meter itself when pulling out the film as in the conventional method, and the meter can be placed on the desk! ! Data reading operations can be easily performed while the instrument is in place, and there is no risk of accidentally dropping the instrument and damaging it during operation.

Moreover, in this invention, the receiving and light emitting elements are arranged at a certain angle with respect to the bottom surface of the meter, so the height space inside the meter can be set low by the tilting of the reading sensor, which allows for ultra-miniaturization of the meter. It has an excellent effect of achieving the purpose of the invention.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a barcode reading mechanism according to the present invention, FIG. 2 is a perspective view showing an example blood glucose meter, and FIG. 3 is a sectional view showing a conventional barcode reading mechanism. . 1; Meter 2: Barcode film 11: Insertion opening 12: Drawer volume portion 31: Light emitting element
33: Light receiving element 35: Film insertion hole Patent applicant Tateishi Electric Co., Ltd. Agent
Patent Attorney Shigeru Nakamura Weight 1 Leap. 1. Instrument 2. To barcode fill 11. Insertion opening s 12: Drawer circumferential bottom 31: Light emitting element
33: Light receiving element 35: Film insertion hole

Claims (3)

[Claims] (1) In a barcode reading structure in which a film insertion hole through which a barcode film is inserted is provided at an appropriate location in the main body of the device, and a light receiving element and a light emitting element are arranged facing each other on both sides of the film insertion hole, the film insertion hole is It is formed into a curved shape with one end opening on the top surface of the instrument body and the other end opening on one end surface of the instrument body, and receiving/emitting elements arranged opposite to both sides of this curved film insertion hole are placed on the bottom surface of the instrument body. A barcode reading structure characterized by being tilted at a certain angle. (2) The barcode reading structure according to claim 1, wherein a shielding film having a slit hole orthogonal to the film insertion hole is provided on the light receiving element side. (3) The barcode reading structure according to claim 1, wherein the film insertion hole is provided with an erroneous insertion prevention piece for preventing erroneous insertion of the barcode film.