Microphone device and microphone stand

Abstract

There are provided a microphone stand having a connector supporting groove, and a microphone body supported by the microphone stand as a result of insertion of a connector case into the connector supporting groove. A resilient conductive cloth which comes into contact with the connector case is arranged in the connector supporting groove, with the connector case inserted in the connector supporting groove. The conductive cloth is preferably arranged in a ring shape along a lower bottom portion of the annularly formed connector supporting groove. This configuration mitigates rattling generated between the connector supporting groove and the connector case, thereby suppressing generation of a vibration noise due to microphone shaking.

Claims

1. A microphone device comprising: a microphone stand having an annular connector supporting groove; a microphone body including a connector case inserted into the connector supporting groove so that the microphone body is supported by the microphone stand, the connector case having an annular opening portion at a tip of the connector case; a spring contact arranged in the connector supporting groove; and a conductive cloth arranged in a ring shape along a bottom portion of the connector supporting groove and resiliently contacting the spring contact, wherein when the connector case is inserted into the connector supporting groove of the microphone stand, an entire upper surface of the conductive cloth resiliently contacts the opening portion of the connector case so that an electrical conduction path is configured to be formed from the connector case to the microphone stand through the conductive cloth and the spring contact.

2. The microphone device according to claim 1, wherein the connector case is formed with a latch hole engageable with a latch claw provided in the connector supporting groove, and the conductive cloth in the connector supporting groove is arranged further below the latch claw.

3. The microphone device according to claim 1, wherein the microphone body further includes a microphone pole portion which connects a microphone case accommodating a microphone unit with the connector case.

4. The microphone device according to claim 3, wherein the microphone pole portion includes a bendable flexible pipe.

5. A microphone stand into which a microphone body including a connector case is inserted, the microphone stand comprising: a connector supporting groove adapted to support the microphone body; a spring contact arranged in the connector supporting groove; and a conductive cloth arranged in the connector supporting groove and resiliently contacting the spring contact, wherein when the connector supporting groove receives the connector case of the microphone body, the conductive cloth resiliently contacts the connector case so that the conductive cloth electrically connects the connector case and the spring contact to form an electrical conduction path.

6. The microphone stand according to claim 5, wherein the connector supporting groove is further provided with a latch claw, and the conductive cloth in the connector supporting groove is arranged far below the latch claw.

7. The microphone device according to claim 1, wherein the microphone stand further includes a latch claw inside the connector supporting groove, and the connector case further includes a latch hole to engage the latch claw so that when the connector case is inserted into the connector supporting groove, the latch claw engages the latch hole while the conductive cloth resiliently contacts the opening portion.

8. The microphone device according to claim 7, wherein the conductive cloth includes conductive wires made of stainless steel.

9. The microphone stand according to claim 5, further comprising a latch claw inside the connector supporting groove, wherein when the connector supporting groove receives the connector case, the latch claw engages the connector case while the conductive cloth is adapted to resiliently contact the connector case.

10. The microphone stand according to claim 9, wherein the conductive cloth includes conductive wires made of stainless steel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an external view showing one example of a gooseneck microphone which can be adopted by the present invention and a conventional microphone device;

(2) FIG. 2 is a partial sectional view showing a state where the gooseneck microphone shown in FIG. 1 is attached to a microphone stand;

(3) FIG. 3A is a sectional view showing a non-connection state of a first mode of a microphone device according to the present invention;

(4) FIG. 3B is a sectional view showing a connection state of the mode of the microphone device according to the present invention;

(5) FIG. 4A is a sectional view showing a non-connection state of a second mode of the microphone device according to the present invention;

(6) FIG. 4B is a sectional view showing a connection state of the second mode of the microphone device according to the present invention;

(7) FIG. 5A is a sectional view for explaining a function of a conventional microphone device;

(8) FIG. 5B is a sectional view showing a first example of a receptacle which configures the conventional microphone device; and

(9) FIG. 5C is a sectional view showing a second example of the same receptacle.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

(10) An embodiment of a microphone device and a microphone stand according to the present invention will be described in detail with reference to the drawings.

(11) FIG. 1 shows one example of a conventional gooseneck microphone, also showing a configuration of a gooseneck microphone (microphone body) that can be used in the present invention. Additionally, FIG. 2 similarly shows one example of a conventional microphone stand, also showing a configuration of a microphone stand that can be used in the present invention.

(12) Since the configurations shown in FIG. 1 and FIG. 2 have been already described, the overlapped description will not be repeated.

(13) FIG. 3A and FIG. 3B show a first mode of a microphone device according to the present invention which is interposed between the microphone body 1 and the microphone stand 11 illustrated in FIG. 1 and FIG. 2.

(14) FIG. 3A shows a state where the connector case 7 of the microphone body 1 is opposed to the receptacle 13 on the microphone stand 11. An output connector 31 is configured with the connector case 7 as an outer shell.

(15) The output connector 31 includes a connector base 32 formed of an insulating resin and to be fit into the connector case 7. To the connector base 32, three connector pins 33 to 35 are attached in the connector case 7 along an axis direction of the case 7. The three connector pins 33 to 35 are assigned to a first pin for grounding, a second pin for a hot side of a signal, and a third pin for a cold side of a signal, respectively.

(16) Additionally, a pin receiving portion 21 is provided at a central area of an upper surface of the receptacle 13 attached on an upper surface of the base casing 12 as illustrated in FIG. 2. Then, a circularly recessed connector supporting groove 22 is formed around the pin receiving portion 21.

(17) On an inner circumferential surface of the pin receiving portion 21 in the connector supporting groove 22, a latch claw 23 is arranged to protrude which is engageable with a latch hole 7a formed on an inner circumferential surface of the connector case 7 of the microphone body 1. This latch claw 23 is pulled back into the pin receiving portion 21 as a result of pushing of the latch release lever 14 that the receptacle 13 includes.

(18) At a lower bottom portion of the above-described circularly recessed connector supporting groove 22, a resilient conductive cloth 37 is placed in a ring shape manner along the lower bottom portion. The conductive cloth 37 is arranged such that an upper surface of the conductive cloth 37 is located far below the latch claw 23.

(19) As the resilient conductive cloth 37, for example, conductive fine wires made of stainless steel which are woven and formed into a cloth, or strips obtained by cutting nonwoven fabric of stainless steel.

(20) For such conductive cloth 37, for example, a conductive cloth “SUI-78-5010T” manufactured by Taiyo Wire Cloth Co., Ltd. can be used.

(21) Then, when arranging the conductive cloth 37 in the lower bottom portion of the circularly recessed connector supporting groove 22, applying an adhesive to the bottom portion of the connector supporting groove 22, or to a lower bottom surface of the conductive cloth 37 to attach the conductive cloth 37 prevents the conduction cloth from coming off.

(22) The receptacle 13 has connection terminals 24 to 26 arranged to protrude from its lower bottom surface. As illustrated in FIG. 3B, connector pins 33 to 35 are inserted into and connected to these connection terminals 24 to 26 from above the output connector 31 placed on the connector case 7.

(23) Accordingly, in this embodiment, the respective connection terminals 24 to 26 serve as a first terminal for grounding, a second terminal for a hot of a signal and a third terminal for cold of a signal, respectively.

(24) Additionally, in the connector supporting groove 22, a spring-like contact 27 having a tip end portion which comes into contact with a part of the conductive cloth 37 is provided and is connected to the first terminal 24 for grounding.

(25) In the configuration illustrated in FIG. 3A, when the connector case 7 of the microphone 1 is inserted into the connector supporting groove 22 of the receptacle 13, a circularly formed opening portion at a tip of the connector case 7 comes into contact first with the entire upper surface of the conductive cloth 37 placed in a ring shape manner in the connector supporting groove 22. When the connector case 7 is further pushed in this state, the conductive cloth 37 is compressed by the opening portion of the connector case 7. The latch claw 23 fits in the latch hole 7a formed in the connector case 7.

(26) As illustrated in FIG. 3B, this brings the connector case 7 to be retained and locked in the receptacle 13, so that the microphone body 1 is attached to the microphone stand 11.

(27) On this occasion, the above-described spring-like contact 27 comes into contact with an inner circumferential surface of the connector case 7, while an electrical conduction path is formed from the connector case 7 to the first terminal 24 for grounding via the conductive cloth 37 and the spring-like contact 27. Accordingly, each member on the microphone body 1 illustrated in FIG. 1 is connected to ground.

(28) In the state as illustrated in FIG. 3B, the latch claw 23 is pulled back into the pin receiving portion 21 as a result of pushing of the latch release lever 14. As illustrated in FIG. 3A, this brings the connector case 7 to be detachable from the receptacle 13 in the axis direction.

(29) According to the first mode of the microphone device illustrated in FIG. 3A and FIG. 3B, in the connector supporting groove 22 formed in the receptacle 13, the resilient conductive cloth 37 which comes into contact with the connector case 7 is arranged. Accordingly, this conductive cloth 37 effectively suppresses rattling caused by a gap between the connector supporting groove 22 and the connector case 7.

(30) Accordingly, shaking of the microphone body 1 attached to the microphone stand 11 can be suppressed and generation of a vibration noise can be also suppressed. Additionally, the above-described electrical conduction path is also formed from the connector case 7 to the first terminal 24 for grounding via the conductive cloth 37 and the spring-like contact 27, which ensures reliable ground connection of the microphone body 1.

(31) Next, FIG. 4A and FIG. 4B illustrate a second mode of the microphone connection device according to the present invention interposed between the microphone body 1 and the microphone stand 11 illustrated in FIG. 1 and FIG. 2. Since main parts of the second mode are the same as those of the first mode illustrated in FIG. 4A and FIG. 4B, the previously described components are identified by the same reference numerals and the detailed description of the components are omitted.

(32) In the second mode, one end portion of a spring-like contact 27 arranged in a connector supporting groove 22 comes in contact with a part of a conductive cloth 37 in an internal bottom portion of the connector supporting groove 22, and the other end portion of the spring-like contact 27 is connected to a frame terminal (not shown), similarly in the case of the example illustrated in FIG. 5C.

(33) Specifically, the second mode is used for connection of the microphone body 1 having an LED, for example, as has been already described with reference to FIG. 5C. In such a configuration, for example, turning on the LED notifies that the microphone becomes in an on-state where an audio signal from the microphone body can be captured.

(34) In this configuration, a first pin 33 of an output connector is used for on and off control of the LED, and a second pin 34, a third pin 35, and the frame terminal of the output connector are used for transmission of an audio signal from the microphone unit and supply of the above-described phantom power.

(35) The remaining configuration of the second mode illustrated in FIG. 4A and FIG. 4B is the same as that of the first mode illustrated in FIG. 3A and FIG. 3B and accordingly, its function and effect are similar to those of the above-described first mode. In addition, according to the second mode, in the state illustrated in FIG. 4B where the connector case 7 is attached to the receptacle 13, a conduction path is formed from the connector case 7 to a frame terminal (not shown) via the conductive cloth 37 and the spring-like contact 27.

(36) Accordingly, even when contact between the connector case 7 and the spring-like contact 27 fails, reliable electrical connection can be ensured via the conductive cloth 37.

(37) This solves a problem of a loud noise generated due to disconnection of a ground line between the side of the above-described microphone body 1 and a microphone amplifier unit such as a mixer.

(38) The foregoing described embodiments are examples in which a gooseneck microphone is attached to a microphone stand so as to be attachable or detachable thereto/therefrom. The microphone device according to the present invention is applicable not only to a gooseneck microphone but also to other type of microphone body.

(39) Additionally, with respect to the example shown in FIG. 4A and FIG. 4B, the description has been made of the function obtained by using the conductive cloth in the connection device for the microphone body having an LED. The present invention, however, is not limited to connection of a microphone body having an LED, but can be certainly used for a microphone device of another mode.