Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS5211994 BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A and 1B are explanatory views of an acceleration type heart sound microphone used conventionally, and FIG. 1A shows an internal configuration by cutting a part of a casing, and FIG. It is a top view. FIGS. 2A and 2B show an acceleration type heart sound microphone according to the present invention, FIG. 2A shows an internal configuration by cutting a part of a housing, and FIG. 2B is a plan view. 3A and 3B show the unit 1 part separated from the weight and the braking part as one unit, FIG. 3A is a sectional view, and FIG. 3B is a plan view. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·················································································•····· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Housing, 1 o, ii · · · · · lower lid and upper lid, 12 · · · · · oil inlet lid cover 13. ······ Oil filling space, 14 ······ Weight outer frame. O / 1 昂 I3) -219-Japanese Utility Model Application No. 52-11994 (2) o J / B3β) -220- DETAILED DESCRIPTION OF THE INVENTION In the present invention, the weight 14111 H11 portion of an acceleration f-type microphone for heart sound is constituted as a single body with respect to the microphone main body portion, and the simplification of the weight mechanism portion is intended. An acceleration type microphone for heart sound uses its casing against the chest of the human body and covers it with the one to which the vibration is transmitted to the casing, and inside the microphone and crophone, a free vibro-rigid system by the elasticity and weight of the piezoelectric element When vibration is transmitted to the housing, the displacement generated between the housing and the weight is converted into a potential by the piezoelectric element and is taken out (1). The characteristics of this microphone are controlled by damping the natural frequency of the internal thread and the transients occurring around seven. FIG. 11 shows a conventional piezoelectric-element-type acceleration microphone, in which l indicates an element of FE, co-,-indicates a base for fixing a pressure, 3 indicates a movable piece, and a wedge connects a heavy pro and the movable piece 3 For the weight axis 7, 7 r is the position and center of the weight, the support plate 9 is the case 10, 10 is the lower lid 04-05-2019 1 and upper lid, 12 is the oil inlet lid, 13 is the oil filled Space. In the conventional microphone shown in FIG. 1, silicone oil is injected into the space inside the case from the hole in the center of the upper cover after assembling the microphone 2. According to the conventional method, oil is also injected into unnecessary space, and it is possible to obtain a flat characteristic because a fluid dynamic 1illI structure can not be obtained either in terms of braking effect or not. It was difficult, the structure was complicated, the number of parts increased, the workability was less than II </, the oil was injected, and readjustment and reassembly were nearly impossible. The present invention solves the above-mentioned drawbacks, and FIG. 12 shows an acceleration microphone for heart sounds according to the present invention. In FIG. 12, the weight 6 and the oil chamber 13 are structured such that they can be removed from the other parts of the microphone integrally with the weight external office which also serves as a part of the case / da. The 3rd figure shows the structure of the integral part of the weight and the braking part, and the outer frame of the weight which doubles as the microphone housing, 6 is a weight, l 'is a weight with an outer frame 4 A flexible resin joining 6 and sealing oil of 13 oil chambers together with weight support is injected from a hole in the outer frame / <7. L (If configured as in the present invention, only the weight unit can be adjusted separately freely, and the other parts are not affected. Even after the father, the Micron has been assembled, it is easy to disassemble and adjust. Furthermore, it can be damped with extremely small amounts of oil and other viscous substances, and the viscosity acts only on both the outer surface of the outer frame / II and the outer peripheral surface of the weight, so it is ideal that the hydrodynamics also do not involve double phenomena. It is possible to downsize the braking characteristics, reduce the number of parts, and simplify the structure, so that the microphone can be miniaturized, and other excellent effects can be included. 04-05-2019 2
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