Multi-audio stethoscope head

Abstract

A multi-audio stethoscope head comprising a head body (1) including a sound collecting surface (11), a vibrating diaphragm, and a fastener. The sound collecting surface (11) is provided with a sound guiding hole (16), and the fastener (3) is provided with an axial through hole (33), a fastener sidewall (31) for attaching to the head body (1), and a diaphragm pressing portion (32) for tightly attaching the vibrating diaphragm (2) to the head body (1). The vibrating diaphragm (2) is disposed between the diaphragm pressing portion (32) and the head body (1). Protruding poles (6) protruding toward the vibrating diaphragm (2) is arranged on the sound collecting surface (11) at the radially inner side of the through hole (33), and when the vibrating diaphragm (2) is not subject to external pressure, the vibrating diaphragm (2) is spaced from the protruding poles (6).

Claims

1. A multi-audio stethoscope head, comprising: a head body; a vibrating diaphragm; and a fastener; a fastener sidewall configured for attaching to the head body; and a diaphragm pressing portion configured for attaching the vibrating diaphragm to the head body, wherein a sound collecting surface is provided on the head body, a sound guiding hole is provided in the sound collecting surface, and the fastener includes an axial through hole, wherein the vibrating diaphragm is disposed between the diaphragm pressing portion and the head body, and includes a lower surface facing the sound collecting surface of the head body and an upper surface opposite to the lower surface, wherein a sound collecting cavity is defined between the vibrating diaphragm and the sound collecting surface, wherein at least one protruding pole which protrudes towards the vibrating diaphragm is arranged on the sound collecting surface of the head body at an radially inner side of the through hole of the fastener, and the vibrating diaphragm, when not subjected to an external force, is spaced from the protruding pole so that a sound of a first frequency is heard by the stethoscope head, and wherein when the vibrating diaphragm is pressed to concave inwards and rest against a top end of the protruding pole, the sound collecting cavity is not divided into a plurality of disconnected compartments and a sound of a second frequency different from the first frequency is heard by the stethoscope head.

2. The multi-audio stethoscope head of claim 1, wherein, the protruding pole and the head body are individually made and matches with each other.

3. The multi-audio stethoscope head of claim 1, wherein, a plurality of the protruding poles are present, and the protruding poles are at least partially spaced.

4. The multi-audio stethoscope head of claim 1, wherein, the protruding pole is arranged on a bottom of the sound guiding hole.

5. The multi-audio stethoscope head of claim 1, wherein, the vibrating diaphragm is fixed to the head body by the diaphragm pressing portion of the fastener, the protruding pole is within the sound collecting cavity.

6. The multi-audio stethoscope head of claim 1, wherein, a sound enhancing ring is disposed between the vibrating diaphragm and the head body and/or a sound enhancing ring is disposed between the vibrating diaphragm and the diaphragm pressing portion, and the sound enhancing ring is at least partially positioned at a radially outer side of the through hole of the fastener.

7. The multi-audio stethoscope head of claim 6, wherein, the sound enhancing ring is connected or engaged with the upper or lower surface of the vibrating diaphragm to form a portion of contact, which is at least partially positioned between a longitudinal extension plane of a sidewall of the through hole and a longitudinal extension plane of the fastener sidewall or an inner face of the fastener sidewall.

8. The multi-audio stethoscope head of claim 1, wherein, a sound enhancing ring is disposed between the lower surface of the vibrating diaphragm and the head body and/or between the upper surface of the vibrating diaphragm and the fastener, and a portion of contact between the sound enhancing ring and the vibrating diaphragm is positioned right below the diaphragm pressing portion.

9. The multi-audio stethoscope head of claim 6, wherein, a portion of contact between the sound enhancing ring and the vibrating diaphragm is positioned between a sidewall of the through hole of the fastener and a radially inner face of the fastener sidewall.

10. The multi-audio stethoscope head of claim 6, wherein, the lower surface of the vibrating diaphragm between the sound enhancing ring and a radially inner face of the fastener sidewall is spaced from the upper surface of the head body at a radially outer side of the sound enhancing ring.

11. The multi-audio stethoscope head of claim 6, wherein, a gap is present between the lower surface of the vibrating diaphragm at a radially outer side of the sound enhancing ring and the upper surface of the head body, or a gap is present between the upper surface of the vibrating diaphragm at a radially outer side of the sound enhancing ring and the diaphragm pressing portion of the fastener.

12. The multi-audio stethoscope head of claim 6, wherein, an annular groove is provided in the upper surface of the head body, and the sound enhancing ring is placed in the annular groove, with at least a part of the sound enhancing ring extending out of the annular groove.

13. The multi-audio stethoscope head of claim 6, wherein, the vibrating diaphragm is a flat sheet made by a single material that has a uniform thickness.

14. The multi-audio stethoscope head of claim 6, wherein, an edge of the vibrating diaphragm is free of elastic coating.

15. The multi-audio stethoscope head of claim 1, wherein a distance from the protruding pole to the center of the sound guiding hole is no more than 50% of a radius of the sound collecting cavity.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of an inventive stethoscope head.

(2) FIG. 2 is another schematic diagram of the inventive stethoscope head.

(3) FIG. 3 is still another schematic diagram of the inventive stethoscope head.

(4) FIG. 4 is a schematic diagram of an inventive stethoscope head provided with two sound enhancing rings.

(5) FIG. 5 is a schematic diagram of an inventive stethoscope head provided with two sound enhancing rings, one of which is integrally formed with a fastener of the stethoscope head.

(6) FIG. 6 is a schematic diagram of an inventive single-sided stethoscope head provided with two sound enhancing rings.

(7) FIG. 7 is a schematic perspective section view of an inventive stethoscope head provided with two sound enhancing rings.

(8) FIG. 8 is a schematic section view of the stethoscope head shown in FIG. 7.

(9) FIG. 9 is a schematic right view of the stethoscope head shown in FIG. 7.

(10) FIG. 10 is a schematic diagram of still another inventive stethoscope head.

(11) FIG. 11 is a schematic right view of the stethoscope head shown in FIG. 10.

(12) In the drawings: 1 head body; 11 sound collecting surface; 12 annular groove; 13 annular protrusion; 14 upper surface; 15 fixing face; 16 sound guiding hole; 161 sidewall of sound guiding hole; 162 bottom of sound guiding hole; 17 stopper structure; 18 pore for protruding pole; 2 vibrating diaphragm; 21 upper surface; 22 lower surface; 23 edge; 231 lower peripheral surface of vibrating diaphragm; 232 upper peripheral surface of vibrating diaphragm; 24 central portion; 25 side face; 3 fastener; 31 fastener sidewall; 311 inner face of fastener sidewall; 32 diaphragm pressing portion; 321 lower surface of diaphragm pressing portion; 33 through hole; 331 sidewall of through hole; 34 annular groove; 4 sound enhancing ring; 41 top portion; 4a sound enhancing ring; 4b sound enhancing ring; 41a top portion; 5, 5a, 5b, 5c gap; 51 sound collecting cavity; 6 protruding pole; 61 top end; 71, 71a, 71b, 72, 72a portion of contact; 8 rotary shaft; 9 support member D1 diameter of stethoscope body; D2 maximum diameter of sound collecting surface.

DETAILED DESCRIPTION

(13) The present disclosure will be further described hereinafter in combination with the accompanying drawings. The provided embodiments of the present disclosure are merely shown as preferable, without limiting the scope of the present invention. In the contrary, the present disclosure is intended to comprise various modifications and equivalent arrangements in the scope of the present invention.

(14) Embodiment 1: The present disclosure is described below in detail in combination with FIGS. 1 to 3 and provides a stethoscope head including a head body 1, a vibrating diaphragm 2, a fastener 3 and a sound enhancing ring 4.

(15) The head body 1 is provided with a sound collecting surface 11 and a sound guiding hole 16 configured for conducting sounds to a rotary shaft, and an annular groove 12 for holding a sound enhancing ring 4 is provided on an upper surface 14 of the head body 1. Here, four protruding poles 6 are arranged on the sound collecting surface 11. These protruding poles 6 may be fixed to the head body 1 via threads, and top ends 61 of the protruding poles 6 are under the vibrating diaphragm 2 and lower than a portion of contact 71 between the sound enhancing ring 4 and the vibrating diaphragm 2.

(16) The fastener 3, which is L-shaped, includes a fastener sidewall 31 which is configured for attaching to the head body 1 and an inner face 311 of which is provided with threads matching with the head body 1, a diaphragm pressing portion 32 configured for pressing the vibrating diaphragm 2 and a through hole 33 formed in the diaphragm pressing portion 32.

(17) The vibrating diaphragm 2 includes an upper surface 21 and a lower surface 22.

(18) The vibrating diaphragm 2 is disposed between the L-shaped fastener 3 and the head body 1 by using the fastener 3, and the lower surface 22 of the vibrating diaphragm 2 and the sound collecting surface 11 together define a sound collecting cavity 51.

(19) An annular sound enhancing ring 4 is disposed between the lower surface 22 of the vibrating diaphragm 2 and the upper surface 14 of the head body 1, with the sound enhancing ring 4 being placed in the annular groove 12 of the head body 1 and a top portion 41 of the sound enhancing ring 4 extending out of the annular groove 12.

(20) A portion of contact 71 between the sound enhancing ring 4 and the lower surface 22 of the vibrating diaphragm 2 is positioned right below the diaphragm pressing portion 32, i.e., within the range of the projection of the diaphragm pressing portion 32 onto the horizontal plane. The portion of contact 71 between the sound enhancing ring 4 and the lower surface 22 of the vibrating diaphragm 2 and a portion of contact 72 between the upper surface 21 of the vibrating diaphragm 2 and the diaphragm pressing portion 32 are subjected to forces in the corresponding vertical directions, respectively.

(21) In order to hear a low-frequency sound by the stethoscope head, the vibrating diaphragm 2 is placed in contact with a sound source such as an organ, so that activity sounds of the organ are transferred to the sound collecting cavity 51 via the vibrating diaphragm 2 and then conducted through the sound guiding hold 16 and further through the rotary shaft.

(22) In order to hear a high-frequency sound by the stethoscope head, the head body 1 is pressed towards the sound source so that the lower surface 22 of the vibrating diaphragm 2 rests against top ends 61 of the protruding poles 6, thus the vibrating property of the vibrating diaphragm 2 is changed to thereby hear the high-frequency sound.

(23) Embodiment 2: The present disclosure is further described in combination with FIG. 4 and provides a stethoscope head which includes a head body 1, a vibrating diaphragm 2, a fastener 3 and sound enhancing rings 4.

(24) The head body 1 is provided with a sound collecting surface 11, and a sound guiding hole 16 configured for conducting sounds to a rotary shaft, and an annular groove 12 configured for holding the sound enhancing rings 4. The fastener 3, which is L-shaped, includes a fastener sidewall 31 which is configured for attaching to the head body 1, a diaphragm pressing portion 32 configured for pressing the vibrating diaphragm 2 and a through hole 33 formed in the diaphragm pressing portion 32. An inner face 311 of the fastener sidewall 31 is provided with threads matching with the head body 1.

(25) The vibrating diaphragm 2 includes an upper surface 21 and a lower surface 22.

(26) The vibrating diaphragm 2 is disposed between the L-shaped fastener 3 and the head body 1 by using the fastener 3, and the lower surface 22 of the vibrating diaphragm 2 and the sound collecting surface 11 together define a sound collecting cavity 51.

(27) An annular sound enhancing ring 4 is disposed between the lower surface 22 of the vibrating diaphragm 2 and the head body 1, with the sound enhancing ring 4 being placed in the annular groove 12 of the head body 1 and a top portion 41 of the sound enhancing ring 4 extending out of the annular groove 12.

(28) A portion of contact 71 between the sound enhancing ring 4 and the lower surface 22 of the vibrating diaphragm 2 is positioned right below the diaphragm pressing portion 32. The portion of contact 71 between the sound enhancing ring 4 and the lower surface 22 of the vibrating diaphragm 2 and a portion of contact 72 between the upper surface 21 of the vibrating diaphragm 2 and the diaphragm pressing portion 32 are subjected to forces in the corresponding vertical directions, respectively.

(29) A gap 5 is present under the lower surface of the vibrating diaphragm 2 between the radially outer side of the sound enhancing ring 4 (i.e., the outer side of the portion of contact 71 between the sound enhancing ring 4 and the vibrating diaphragm 2) and the inner face 311 of the fastener sidewall 31, that is, the lower surface of the vibrating diaphragm 2 that is at the outer side of the portion of contact 71 is not attached, in other words, the lower peripheral surface 231 of vibrating diaphragm 2 at the edge 23 of the vibrating diaphragm 2 is spaced from the upper surface 14 by the gap 5.

(30) The portion of contact 71 between the top portion 41 of the sound enhancing ring 4 and the vibrating diaphragm 2 is always positioned below the diaphragm pressing portion 32 of the fastener 3. A top portion 41 of a sound enhancing ring 4 may be in contact with the lower surface of the diaphragm pressing portion, i.e., a surface of the diaphragm pressing portion that is in contact with the vibrating diaphragm.

(31) In the case where the vibrating diaphragm 2 is in contact with the top portion 41 of the sound enhancing ring 4, the lower surface 22 of the vibrating diaphragm 2 at the inner side of the sound enhancing ring 4 is spaced from the sound collecting surface 11, and the lower peripheral surface 231 of vibrating diaphragm 2 at the outer side of the sound enhancing ring 4 is spaced from the upper surface 14 of the head body 1.

(32) As shown in FIG. 4, it is possible to provide two sound enhancing rings, one of which 4a is located between the lower surface 22 of the vibrating diaphragm and the sound collecting surface 11 of the head body 1, and the other of which 4b is located between the upper surface 21 of the vibrating diaphragm and the lower surface of the diaphragm pressing portion of the fastener 3. The lower peripheral surface of vibrating diaphragm; 231 is spaced from the upper surface 14 of the head body 1 by a gap 5.

(33) A portion of contact 71a between the sound enhancing ring 4a and the lower surface 22 of the vibrating diaphragm 2 is right opposite to a portion of contact 71b between the sound enhancing ring 4b and the upper surface 21 of the vibrating diaphragm 2, and all of the portions of contact 71a and 71b and a portion of contact 72a between the sound enhancing ring 4b and the lower surface of the diaphragm pressing portion are positioned right below the diaphragm pressing portion 32 of the fastener 3, i.e., within the range of the projection of the diaphragm pressing portion 32 onto the horizontal plane.

(34) Embodiment 3: The present disclosure is further described in combination with FIG. 5 and provides a stethoscope head which includes a head body 1, a vibrating diaphragm 2, and a fastener 3.

(35) The head body 1 is provided with a sound collecting surface 11, a sound guiding hole 16 configured for conducting sounds to a rotary shaft, an annular groove 12 configured for holding a sound enhancing ring 4a, and an upper surface 14.

(36) The fastener 3, which is L-shaped, includes a fastener sidewall 31 which is configured for attaching to the head body 1, a diaphragm pressing portion 32 configured for pressing the vibrating diaphragm 2 and a through hole 33 formed in the diaphragm pressing portion 32. An inner face 311 of the fastener sidewall 31 is provided with threads matching with the head body 1. A sound enhancing ring 4b is provided on the lower surface 321 of the diaphragm pressing portion 32 and formed integrally with the diaphragm pressing portion 32 using the same material.

(37) The vibrating diaphragm 2 includes an upper surface 21 and a lower surface 22.

(38) The vibrating diaphragm 2 is disposed between the L-shaped fastener 3 and the head body 1 by using the fastener 3. Particularly, the vibrating diaphragm 2 is positioned between the sound enhancing ring 4a and the sound enhancing ring 4b. The lower surface 22 of the vibrating diaphragm 2 is in contact with a top portion of the sound enhancing ring 4a, and the upper surface 21 of the vibrating diaphragm 2 is in contact with a bottom portion of the sound enhancing ring 4b.

(39) The lower surface 22 of the vibrating diaphragm 2, the sound enhancing ring 4a, the upper surface 14, the sound collecting surface 11, a sidewall of sound guiding hole 161, and the bottom of sound guiding hole 162 together define a sound collecting cavity 51.

(40) The annular sound enhancing ring 4a, which is disposed between the lower surface 22 of the vibrating diaphragm 2 and the head body 1, is placed in the annular groove 12 of the head body 1, with a top portion 41 of the sound enhancing ring 4a extending out of the annular groove 12.

(41) The annular groove 12 may have a height of 0.7 mm and a width of 1.1 mm, and the sound enhancing ring 4 may have the maximum diameter of 1.0 mm.

(42) A portion of contact 71 between the sound enhancing ring 4a and the vibrating diaphragm 2 is positioned right below the diaphragm pressing portion 32. Further, the portion of contact 71 between the sound enhancing ring 4a and the lower surface 22 of the vibrating diaphragm 2 and a portion of contact 72 between the sound enhancing ring 4b and the upper surface 21 of the vibrating diaphragm 2 are opposite to each other along the longitudinal direction of the vibrating diaphragm 2.

(43) Both of the sound enhancing rings 4a and 4b are at the outer side of the sidewall 331 of the through hole of the fastener 3, and both of the portions of contact 71 and 72 are positioned between a longitudinal extension plane of the sidewall 331 of the through hole and a longitudinal extension plane of the inner face 311 of the fastener sidewall.

(44) A gap 5 is present under the lower peripheral surface 231 of the vibrating diaphragm 2 between the radially outer side of the sound enhancing ring 4 (i.e., the outer side of the portion of contact 71 between the sound enhancing ring 4 and the vibrating diaphragm 2) and the inner face 311 of the fastener sidewall 31, that is, the lower peripheral surface 231 of the vibrating diaphragm 2 that is at the outer side of the portion of contact 71 is not attached, in other words, the lower peripheral surface 231 of vibrating diaphragm 2 at the edge 23 of the vibrating diaphragm 2 is spaced from the fixing face 15 by the gap 5.

(45) At the outer side of the sound enhancing ring 4b, a gap 5 is present above the upper peripheral surface 232 of the vibrating diaphragm 2 between the portion of contact 72 between the bottom portion of the sound enhancing ring 4b and the vibrating diaphragm 2 and the inner face 311 of the fastener sidewall 31, that is, the upper peripheral surface 232 of the vibrating diaphragm 2 that is at the outer side of the portion of contact 72 is not attached, in other words, the upper peripheral surface 232 of vibrating diaphragm 2 at the edge 23 of the vibrating diaphragm 2 is spaced from the lower surface 321 of the diaphragm pressing portion by the gap 5.

(46) In the case where the vibrating diaphragm 2 is in contact with the top portion 41 of the sound enhancing ring 4a, the lower surface 22 of the vibrating diaphragm 2 at the inner side of the sound enhancing ring 4a is spaced from the sound collecting surface 11, and the lower peripheral surface 231 of the vibrating diaphragm at the outer side of the sound enhancing ring 4a is spaced from the upper surface 14 of the head body 1.

(47) The sound enhancing ring 4a is placed in the annular groove 12 of the head body 1. After the vibrating diaphragm 2 is fixed between the sound enhancing ring 4a and the sound enhancing ring 4b of the fastener 3, the vibrating diaphragm 2 is maintained flat without bending.

(48) A pore for protruding pole 18 may be provided in the bottom of sound guiding hole 162 of the sound guiding hole 16.

(49) The bottom of the protruding pole 6 is fixed to the pore for protruding pole 18. The protruding pole 6 may be fixed to the pore for protruding pole 18 by interference fit, or by adhesion, or in a threaded manner by using internal threads provided in the pore for protruding pole 18 and external threads provided around the bottom of the protruding pole 6.

(50) The top end 61 of the protruding pole 6 may be spaced from the lower surface 22 of the vibrating diaphragm 2 by 0.4 mm. The protruding pole 6 may have a columnar shape with a diameter of 2 mm and a height of 7.5 mm, the sound guiding hole 16 may have a diameter of 6 mm and a depth of 6.3 mm, and the central axis of the protruding pole 6 may be distanced from the edge of the sound collecting surface by 21 mm. Preferably, a distance from the protruding pole 6 to the center of the sound guiding hole 16 is no more than 50% of the radius of the sound collecting cavity 51.

(51) To hear varied audio frequency by the stethoscope head, the head body 1 is pressed towards the sound source so that the lower surface 22 of the vibrating diaphragm 2 rests against the top end 61 of the protruding pole 6. Regardless of the switching between audio frequencies intended to be heard, the diameter of the maximum effective sound collecting portion of the sound collecting surface 11 is maintained unchanged.

(52) In the above embodiments, the sound enhancing ring 4b and the fastener 3 may be individually formed (as shown in FIG. 6), and the sound enhancing ring 4b is placed in an annular groove 34 formed in the lower surface 321 of the diaphragm pressing portion of the fastener 3.

(53) In the above embodiments, when the upper surface 21 of the vibrating diaphragm 2 is pressed so that the vibrating diaphragm 2 is deformed downwards, the lower surface 22 of the vibrating diaphragm 2 contacts the top end 61 of the protruding pole 6, and thus a vibrating amplitude of the vibrating diaphragm 2 is changed and a varied audio frequency (e.g., high-frequency sound) is heard.