KR101339834B1 - A mouthpiece for drunkometer - Google Patents

Abstract

The present invention provides a mouthpiece (10) for a drunkometer which is formed that one end is installed in a drunkometer main body (1) and a testee breathes out to the other end of the drunkometer main body. The mouthpiece (10) comprises: an external pipe body (20) in which expiration pathways (21, 22) are formed along the longitudinal direction inside the mouthpiece (10); introverted protrusion units (30) which are equipped in the center of the inner periphery of the external pipe body (20) and divide into first expiration pathway (21), which connects the expiration pathways (21,22) to the drunkometer main body (1), and second expiration pathway (22), which is connected to mouth of the testee, and in which a flow path (31), which mutually connects the first expiration pathway to the second expiration pathway (21, 22) and has a diameter reduced more than the expiration pathways (21, 22), is formed in the center; and an open and close valve body (40) which is combined with the flow path (31) of the introverted protrusion units (30) as being able to move forward and backward and opens and closes the flow path (31) as being moved forward and backward. If the testee inhales without expiration, the open and close valve body (40) moves forward from the flow path (31) by suction force and closes the flow path (31) in order to prevent the first expiration pathway (21) from being connected to the second expiration pathway (22).

Description

Mouthpiece for Breathalyzer {A mouthpiece for drunkometer}

The present invention relates to a mouthpiece for a breathalyzer, and more particularly, to a mouthpiece for a breathalyzer, which is simple in structure and can improve the reliability of the breathalyzer by blocking the measurement by a conventional measure of the subject.

The number of car accidents is increasing day by day with the widespread use of automobiles. In particular, traffic accidents caused by drunk driving tend to lead to catastrophic disasters.

In order to regulate drunk driving, the alcohol meter is used to check whether the driver is drinking. Such a alcohol meter is a device that displays the alcohol content in the air discharged when the driver breathes, and includes an alcohol sensor and a measuring means. It consists of a straw-shaped mouthpiece in communication with the alcohol sensor. Accordingly, by measuring the alcohol concentration in the blood by measuring the main body by blowing the breath to the mouthpiece to display.

On the other hand, since most of the subjects in the drinking state are psychologically uncooperative with the alcohol measurement, there is a case where the mouthpiece does not blow enough air or inhales the air. However, since the alcohol sensor recognizes the flow of air to measure blood alcohol concentration, the alcohol sensor is activated even if the air is inhaled as described above, but alcohol measurement is made, but alcohol component is not detected. As the display is displayed as '0', the reliability of the measurement is lowered, and there is a problem that causes a traffic accident by neglecting the drunk driver's drunk driving by determining the drunker as a non-drink drunk.

Korean Utility Model Registration No. 20-0212228

The present invention has been made to solve the problems described above, an object of the present invention is to improve the reliability of the measured value by preventing the inhalation measurement was made even when the conventional subject is not properly inhaled or inhaled while the structure is simple It is possible to provide a breathalyzer mouthpiece that can reduce the accident caused by drunk driving.

According to a feature of the invention, one end is mounted on the alcohol measuring base (1), the mouthpiece 10 to be breathed into the breath measuring basic body (1) through the other end, the mouthpiece ( 10, the exterior body 20 is formed in the exhalation passage (21, 22) along the longitudinal direction therein; It is provided in the middle of the inner peripheral surface of the outer body 20, the first breathing passage (21, 22) and the second breathing passage communicating with the oral cavity of the subject and the first breathing passage (21) to communicate with the drinking measurement basic body (1) And an inward protrusion having a flow path 31 having a smaller diameter than the exhalation passages 21 and 22 and communicating with the first and second ventilation passages 21 and 22 at the center thereof. 30); And an opening and closing valve body 40 coupled to the flow passage 31 of the inwardly projecting portion 30 so as to be moved forward and backward, and opening and closing the flow passage 31 as it is moved forward and backward. When the suction is performed without the suction, the opening and closing valve body 40 moves forward from the flow passage 31 by the suction force and closes the flow passage 31, so that the first passage 21 passes through the second passage 22. There is provided a breathalyzer mouthpiece, characterized in that the communication is blocked.

According to another feature of the invention, the on-off valve body 40 is formed with a length longer than the length of the flow path 31 is a valve body 41 which is slidably fitted in the flow path 31, the valve body 41 Expansion plate 42 which extends radially outwardly from one end of the circumference and hangs around the outlet 33 of the flow passage 31 in communication with the first ventilation passage 21 to block the outlet 33 of the flow passage 31. ) And a locking piece 43 which extends radially outwardly from the other end of the valve body 41 and is caught around the inlet 32 of the flow path 31 communicating with the second air passage 22. A mouthpiece for a breathalyzer is provided.

According to another feature of the present invention, the recess 32 is formed in the circumference of the inlet 32 of the flow passage 31 is formed along the circumference of the flow passage 31 concave toward the outlet 33 from the inlet 32 There is provided a mouthpiece for a breathalyzer.

As described above, according to the present invention, the first and second air passages 21 and 22 are provided in the inward protrusions 30 which divide the inside of the exterior body 20 into the first and second air passages 21 and 22. By forming a flow path 31 for communicating with and having an opening / closing valve body 40 for opening and closing the flow path 31 as it is advanced back and forth in the flow path 31, when the subject is inhaled rather than blowing the breath, As the on-off valve body 40 is advanced by this suction force and the flow path 31 is closed, there is no change in the flow of air in the first gas passage 21 in communication with the drinking-measuring basic body 1, so that the drinking-measuring basic body ( Since the alcohol sensor of 1) is not operated, unlike the conventional case, if the test subject responds to the drinking measurement uncooperatively, the drinking measurement itself is not made. Can be prevented in advance.

In addition, the opening / closing valve body 40 is positioned coaxially with the flow path 31 and closes the flow path 31 only by forward and backward movement, so that the flow path 31 is easily closed even with a small suction force of the subject to measure drinking. Since this is not done, the above effects are further enhanced.

In addition, a diameter of the opening / closing valve body 40 is greater than that of the outlet 33 of the flow passage 31, and the expansion plate 42 covering and closing the outlet 33 is weakly exhaled by the subject. Since the pressure applied to the expansion plate 42 is maintained even without blowing, the on-off valve body 40 can be moved more easily in the flow passage 31, so that the outlet 33 of the flow passage 31 is easier. Can be opened. Accordingly, even if the subject is weakly exhaled by the shortcut method, the alcohol measurement can be accurately performed, thereby improving the efficiency of the alcohol measurement.

On the other hand, the saliva groove 34 is formed around the inlet 32 of the flow passage 31 to prevent the saliva (saliva), which is ejected together when the subject injects the breath, is prevented from flowing into the flow passage 31. The continuous use prevents the flow passage 31 from being blocked, thereby improving the accuracy of the drinking measurement. In addition, the needle is less likely to be applied to the on-off valve body 40 so that the weight of the on-off valve body 40 is hardly changed, and thus the flow path 31 is easily closed by the small suction force of the subject as described above.

1 is an internal configuration showing an embodiment of a mouthpiece for breathalyzer according to the present invention
2 and 3 is an operating state showing the operation of the embodiment

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a partial cutaway perspective view showing an internal configuration of a mouthpiece for breathalyzer according to a preferred embodiment of the present invention, Figures 2 and 3 are side cross-sectional view showing an operating state of the embodiment.

As shown, the mouthpiece 10 for breathalyzer according to an embodiment of the present invention has an exterior body 20, the breath passage 21, 22 formed in the longitudinal direction therein, and the exterior body 20 An inward protrusion 30 provided with a middle portion of the inner circumferential surface of the air passage 31 for partitioning the exhalation passages 21 and 22 into two and communicating the divided exhalation passages 21 and 22 with each other; And an on / off valve body 40 slidably fitted into the flow passage 31 to open and close the flow passage 31.

The exterior body 20 is made of a straight straw shape and the air passages 21 and 22 extend in the longitudinal direction therein. One end of the exterior body 20 is mounted on the basic alcohol measuring unit 1, and the breath of the subject is introduced into the basic alcohol measuring unit 1 through the exhalation passages 21 and 22.

The inwardly projecting portion 30 is projected inwardly onto the exhalation passages 21 and 22 from the inner circumferential surface of the exterior body 20, and the exhaling passages 21 and 22 are inhaled by the inwardly projecting portion 30. ) Is divided into a first ventilator passage (21) in communication with) and a second ventilator passage (22) in communication with the mouth of the subject.

In addition, the inwardly protruding portion 30 is formed with a straight flow passage 31 for communicating the first and second arc passages 21 and 22 with each other. Meanwhile, the second breath passage 22 communicates with the inlet 32 of the flow passage 31 through which the exhalation flows into the flow passage 31, and the first breath passage 21 discharges the exhalation passage from the flow passage 31. It is configured to communicate with the outlet 33 of the flow path 31. The diameter of the flow path 31 is formed smaller than the diameter of the 1st and 2nd ventilation path 21, and is formed so that it may become larger gradually from the inlet 32 to the outlet 33. As shown in FIG.

On the other hand, around the inlet 32 of the flow path 31 is a guide groove 34 spaced apart from the inlet 32 and concave toward the outlet 33 from the inlet 32 of the flow path 31 is the flow path 31 It is formed along the periphery of the), so that the needle (saliva) that is injected together when the subject is blowing in flow into the saliva groove 34 and does not flow into the flow path (31).

The opening / closing valve body 40 is fitted into the flow passage 31 to move forward and backward along the longitudinal direction (slide), thereby opening and closing the outlet 33 of the flow passage 31 to the first and second air passages 21 and 22. Are connected to each other or disconnected. The on-off valve 40 is injection-molded with synthetic resin so that the valve body 41 fitted into the flow path 31 and the expansion plate 42 and the locking piece 43 provided at both ends of the valve body 41 are integrated. .

In addition, the valve body 41 has a substantially U shape in the embodiment in which the plurality of elastic protrusions 41a and 41b spaced apart from each other extend in the longitudinal direction of the flow path 31. At this time, the elastic protrusions 41a and 41b are formed longer than the length of the flow path 31, and forms an air inlet 44 through which exhalation flows between the elastic protrusions 41a and 41b.

The expansion plate 42 protrudes radially outward from the connection portion of the elastic protrusions 41a and 41b, which are intermediate portions of the valve body 41, and the diameter of the expansion plate 42 is the diameter of the outlet 33 of the flow passage 31. It is formed larger and hangs around the outlet 33 of the flow path 31. As a result, the outlet 33 of the flow passage 31 is closed by the expansion plate 42 of the on-off valve body 40, so that the connection between the first and second ventilation passages 21 and 22 is blocked.

On the other hand, the engaging piece 43 protrudes radially outward from the end portions of the elastic protrusions 41a and 41b and is caught around the inlet 32 of the flow path 31, so that the opening / closing valve body 40 is connected to the flow path ( Departure from 31) is prevented. On the other hand, the inwardly projecting part 30 is injection molded so that the inwardly projecting part 30 is integrally formed therein, and the injection-molded opening / closing valve body 40 is provided with some degree of elasticity and thus the elastic protrusions 41a and 41b. Is elastically deformed and can be easily inserted into the flow path 31 inside the exterior body 20. Accordingly, in order to insert the on-off valve body 40 into the exterior body 20, the exterior body 20 does not need to be manufactured by combining two parts made of separate bodies.

When measuring the breath using the mouthpiece for breathalyzer according to an embodiment of the present invention configured as described above, as shown in FIG. Suction force acts and the on-off valve body 40 is advanced from the outlet 33 of the flow path 31 toward the inlet 32. Accordingly, the outlet 33 of the flow path 31 is closed by the expansion plate 42 of the on-off valve body 40, so that the connection between the first and second passages 21 and 22 is blocked, Since there is no change in the flow of air in the first gas passage 21 communicating with the measuring body 1, the alcohol sensor is not operated, and thus alcohol consumption is not measured. Therefore, due to the non-cooperative measurement attitude of the subject, the alcohol measurement itself is not made unlike the conventional method, and thus accurate alcohol measurement is possible through re-measurement, thereby increasing the reliability of the alcohol measurement and thereby preventing drunk drivers from driving. Can be reduced.

On the other hand, in the present invention, in the state in which the valve body 41 is fitted in the flow path 31, the expansion plate 42 is always arranged coaxially with the outlet 33 of the flow path 31, so that the expansion plate 42 up or down The outlet 33 of the flow path 31 can be closed simply by advancing forward and backward without having to move left and right, so that the flow path 31 is extended by the expansion plate 42 of the on-off valve body 40 even with a small suction force of the subject. Since the outlet 33 of) can be easily closed, even if the subject measures the alcohol finely and finely, the alcohol measurement is not made.

Unlike the present invention, when the original position of the opening and closing valve body is not coaxial with the flow path, the opening and closing valve body must be aligned not only up and down or left and right so as to be coaxial with the flow path from the original position, and also be moved forward and backward on the flow path. If the suction force of the subject is relatively small, there is a problem in that the on-off valve body does not close the flow path and alcohol measurement may be performed by an alcohol sensor that detects a change in air flow.

Furthermore, in the present invention, most of the needles ejected when the subject is blown into the acupuncture groove 34 are introduced to the opening / closing valve body 40 so that a relatively small amount of the needles are buried as well as the opening / closing valve as described above. Since the sieve 40 is coaxially positioned on the flow passage 31, the opening and closing valve body 40 is not prevented from moving forward and backward on the flow passage 31 due to the weight of the needle. If, unlike the present invention, if the needle gutter groove is not provided and the on-off valve body is not coaxial with the flow path, a large amount of needles are buried in the on-off valve body so that the flow path is opened and closed as the weight of the on-off valve body increases. Closure requires a larger suction force of the subject, so that the subject's uncooperative drinking measurement cannot be prevented.

On the other hand, as shown in Figure 3, when the subject inhales the exhalation, one surface of the expansion plate 42 of the on-off valve body 40, which is a portion subjected to the pressure formed by the exhalation is made of a flat surface compared to the curved surface such as a sphere Since the pressure is not dispersed, the on / off valve body 40 can be easily pushed toward the outlet 33 from the inlet 32 of the flow path 31 even by a smaller pressure. Therefore, even if the non-cooperative subjects breathe weakly, breath measurement can be made, thereby improving the efficiency of the breath measurement.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

Claims (3)

In the mouthpiece 10, one end of which is mounted on the alcohol measuring basic body 1 and the subject is blown into the alcohol measuring basic body 1 through the other end.
The mouthpiece 10 has an exterior body 20 formed therein the expiratory passages (21, 22) along the longitudinal direction; It is provided in the middle of the inner peripheral surface of the outer body 20, the first breathing passage (21, 22) and the second breathing passage communicating with the oral cavity of the subject and the first breathing passage (21) to communicate with the drinking measurement basic body (1) And an inward protrusion having a flow path 31 having a smaller diameter than the exhalation passages 21 and 22 and communicating with the first and second ventilation passages 21 and 22 at the center thereof. 30); And
A valve body 41 coupled to the flow passage 31 of the inwardly projecting portion 30 so as to be moved forward and backward and formed to be longer than the length of the flow passage 31 so as to be slidably fitted into the flow passage 31, and the valve body 41. An expansion plate that extends radially outwardly at one end of the 41 and is caught around the outlet 33 of the flow passage 31 in communication with the first air passage 21 to block the outlet 33 of the flow passage 31. (42) and a catching piece (43) which extends radially outwardly from the other end of the valve body (41) and is hooked around the inlet (32) of the flow passage (31) communicating with the second vent passage (22). It is made, including the opening and closing valve body 40 for opening and closing the flow path 31 as the valve body 41 is moved forward and backward,
When the subject is inhaled without blowing the breath, the opening and closing valve body 40 moves forward from the flow passage 31 by the suction force and closes the flow passage 31 so that the first breath passage 21 is second. Mouthpiece for breathalyzer, characterized in that the communication with the breath passage 22 is blocked.


delete According to claim 1, wherein the inlet 32 of the flow path 31 is recessed groove 34 concave toward the outlet 33 from the inlet 32 is characterized in that formed along the circumference of the flow path (31). Mouthpiece for breathalyzer.

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