JP2010074508A - Gooseneck microphone device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gooseneck microphone device capable of preventing a flexible pipe from being sprung by restricting flexure of a part in which the flexure of the flexible pipe easily concentrates. <P>SOLUTION: At least in a part of a support rod 21 interposed and arranged between a microphone unit 12 and a mounting part 32, a flexible pipe 22 formed by interposing an outer winding 24 formed of a soft steel wire or a copper alloy wire having a cross section exhibiting a triangle in a space between steel wires produced by stretching a coil spring-like inner winding 23 formed of a steel wire having a cross section exhibiting a circular shape is arranged, and welded parts 25 are formed by partially welding, by ultrasonic waves, required lengths in an axial length direction in one or more relatively-frequently bent parts of the flexible pipe 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gooseneck type microphone device in which a flexible pipe, which is a constituent member of a support column positioned between a microphone unit and a mounting portion, is partially ultrasonically welded to restrict free bending.

  As shown in FIG. 2, the conventional gooseneck type microphone device 1 using the flexible pipe 4 as a support for supporting the microphone unit 2 is configured to bend the flexible pipe 4 in a desired direction so that the side of the microphone unit 2 is a sound source. Since it can be moved and adjusted to a suitable position determined by the relationship with the (mouth), it is widely used, for example, by being installed on a podium of a conference hall via the mounting portion 3.

FIG. 3 is an overall perspective view showing the gooseneck type microphone device shown in FIG. In this case, the gooseneck type microphone device 1 is formed in its entirety by fixing the proximal end side of the flexible pipe 4 as a support to the support base 5 via the attachment portion 3 and attaching the microphone unit 2 to the distal end side. ing.
JP-A-9-229292

  For this reason, when the speaker tries to point the microphone unit 2 near the sound source (mouth), the speaker may simply bend the flexible pipe 4 in a desired direction, and maintain such a bent posture. It can be used as it is.

  On the other hand, FIG. 4 is an explanatory view showing a partially enlarged example of a general cross-sectional structure of the flexible pipe constituting the support in FIGS. 2 and 3. In this case, the flexible pipe 5 is a mild steel wire having a triangular cross section in the gap 7 between the steel wires 6a and 6a formed by pulling the coil spring-shaped inner winding 6 made of a steel wire 6a having a circular cross section. Alternatively, the outer winding 8 made of a copper alloy wire is sandwiched from one apex 8a side.

  For this reason, the flexible pipe 5 generates a strong frictional force against the restoring force of the inner winding 6 at the contact portion 9 between the inner winding 6 and the outer winding 7 that bears the deformation restoring force. The deformed state when bent to the right can be held by itself.

  However, since the flexible pipe 5 is incorporated as a support of the gooseneck type microphone device 1 as shown in FIGS. 2 and 3 and the bending thereof is repeated, the flexible pipe 5 is particularly adjacent to the microphone unit 2 and the mounting portion. Since the portion adjacent to 3 is easily bent greatly, the contact portion 9 between the inner winding 6 and the outer winding 8 is scraped, and the frictional force is reduced to cause a so-called springing phenomenon. For this reason, even if the microphone unit 2 is moved to a desired position, the gooseneck type microphone device 1 cannot maintain the position after the movement because the portion where bending tends to concentrate becomes a spring. There was an inconvenience of returning to the original position.

  An object of the present invention is to provide a gooseneck type microphone device capable of preventing springing by restricting bending of a portion where bending of a flexible pipe tends to concentrate, in view of the above-described problems of the prior art.

  The present invention has been made to achieve the above-described object, and at least a part of a support column interposed between the microphone unit and the mounting portion has a coil spring shape made of a steel wire having a circular cross section. A flexible pipe is formed by sandwiching an outer winding made of a mild steel wire or a copper alloy wire having a triangular cross section in the gap between the steel wires generated by pulling the inner winding, and the flexible pipe relatively frequently The main feature is that a welded portion is formed by partially ultrasonically welding a required length in the axial length direction at one or more portions to be bent.

  In this case, the support column is formed by the flexible pipe over its entire length, and at least the adjacent part of the microphone unit and the adjacent part of the attachment part have an axial length longer than the weld part of the other part. It is preferable to form the welded part having a long length.

  According to the present invention, the flexible pipe is formed with a welded portion in which one or more portions where bending tends to concentrate is partially ultrasonically welded. The microphone unit can be stably moved to a desired position and used without causing a phenomenon.

  FIG. 1 is an explanatory view showing an example of the present invention. The entire gooseneck type microphone device 11 includes a flexible pipe 22 that supports a microphone unit 12 on its upper end and functions as a support column 21, and the flexible pipe 22. It is formed with a mounting portion 32 that is disposed on the base end side and can be fixed in position by, for example, screwing it to a mounting counterpart provided in advance on a desk or the like.

  In this case, the flexible pipe 22 is formed from a mild steel wire or a copper alloy wire having a triangular cross section in a gap between steel wires generated by pulling a coil spring-shaped inner winding 23 made of a steel wire having a circular cross section. For example, it is formed as shown in FIG.

  In addition, a welded portion 25 that is partially ultrasonically welded is formed in a portion where bending is concentrated in the flexible pipe 22, and a non-welded portion 26 that is not ultrasonically welded is left in other portions. It is formed under conditions.

  This will be described in more detail with reference to the illustrated example. The portions where the bending is most concentrated in the flexible pipe 22 are the adjacent portions to the microphone unit 12 and the adjacent portions to the mounting portion 32. The long welded portions 25a are formed as welded portions 25 by ultrasonic welding so that the length in the axial direction is the longest.

  In addition, the first non-welded portion 26 a having the longest axial length is left as a non-welded portion 26 at the intermediate portion in the axial length direction of the flexible pipe 22 so as to bend more easily than the other non-welded portions 26. Has been.

  Furthermore, on both sides (vertical direction in the illustrated example) of the first non-welded portion 26 a in the flexible pipe 22, first short-sized welded portions 25 b that are shorter in the axial direction than the long-sized welded portions 25 a are respectively welded portions 25. Is formed.

  Further, a second non-welded portion 26b having a long axial length after the first non-welded portion 26a is left as a non-welded portion 26 in each of the adjacent portions of the first short weld portions 25b.

  Furthermore, in each of the adjacent portions of each second non-welded portion 26b, a first short-sized welded portion 25b and a third short-sized welded portion 25c having substantially the same axial length as the long-sized welded portion 25a are provided. The third non-welded portion 26c is formed as a welded portion 25 with the third non-welded portion 26c interposed therebetween.

  Next, the operation and effect of the present invention having the above configuration will be described based on the illustrated example. The gooseneck type microphone device 11 is attached to a mounting counterpart provided on a desk or the like via the mounting portion 32. This can be installed by fixing the position.

  Further, when the speaker uses the gooseneck type microphone device 11, the position is adjusted by the speaker so that the microphone unit 12 attached to the distal end side of the flexible pipe 22 faces the mouth (sound source).

  The position adjustment of the microphone unit 12 at this time is performed by bending the first non-welded portion 26a having the longest axial length among the non-welded portions 26 of the flexible pipe 22 and the second non-welded portions 26b and The microphone unit 12 can be finely adjusted to a suitable position determined in relation to the mouth (sound source) while being bent to some extent through the third non-welded portions 26c.

  Further, when the speaker holds the microphone unit 12 and tries to bend the flexible pipe 22, a large bending stress tends to act on the adjacent portion of the microphone unit 12, but the long welded portion 25 a is applied to the corresponding portion. Since it is formed and cannot be bent, it is possible to effectively prevent springing.

  Furthermore, when the speaker tries to bend with the flexible pipe 22 itself, a long welding portion 25a is also formed in the corresponding portion, although a large bending stress tends to act on the adjacent portion of the mounting portion 32. Therefore, since it cannot be bent, the springing can be effectively prevented.

  In addition to the above-described long welded portion 25a, the second non-welded portion 26b and the third non-welded portion 26c are formed on the flexible pipe 22 as non-welded portions 26 in other portions where bending tends to concentrate. Therefore, the springing of each part can be reliably prevented.

  That is, the flexible pipe 22 is formed with a welded portion 25 in which one or more portions where bending tends to concentrate is partially ultrasonically welded, so that bending is limited by the welded portion 25 so-called springing phenomenon. Thus, the microphone unit 12 can be stably moved to a desired position for use.

  The above is the description of the present invention based on the illustrated example, and the specific configuration is not limited thereto. For example, the support column 21 may be formed by incorporating a hard pipe in a part thereof without forming only the flexible pipe 22. Moreover, the flexible pipe 22 can also be weighted with respect to easiness of bending by arrange | positioning the welding part 25 and the non-welding part 26 in the desired site | part under appropriate patterns other than the example of illustration.

Explanatory drawing which shows an example of this invention. Explanatory drawing which shows an example of the conventional gooseneck type microphone apparatus. FIG. 3 is an overall perspective view showing the gooseneck type microphone device shown in FIG. 2 of Patent Document 1 again. Explanatory drawing which expands and shows the example of a general cross-section of the flexible pipe which comprises the support | pillar partially.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Gooseneck type microphone apparatus 12 Microphone unit 21 Strut 22 Flexible pipe 23 Inner winding 24 Outer winding 25 Welding part 25a Long welding part 25b First short welding part 25c Second short welding part 26 Non welding part 26a First Non-welded portion 26b Second non-welded portion 26c Third non-welded portion 32 Mounting portion

Claims (2)

A gap between the steel wires generated by pulling a coil spring-shaped inner winding made of a steel wire having a circular cross section is formed on at least a part of the support column interposed between the microphone unit and the mounting portion. A flexible pipe formed by sandwiching an outer winding made of a mild steel wire or a copper alloy wire having a triangular cross section,
A gooseneck type microphone device characterized in that a welded portion is formed by partially ultrasonically welding a required length in the axial length direction at one or more portions of the flexible pipe that are bent relatively frequently. The support column is formed by the flexible pipe over its entire length, and at least the adjacent part of the microphone unit and the adjacent part of the attachment part have an axial length longer than the welded part of the other part. The gooseneck type microphone device according to claim 1, wherein a welded portion is formed.

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