JP2018078418A - Acoustic converting section stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable position adjustment of an acoustic converting section while reducing exposure of a wiring cord to an outer side.SOLUTION: A speaker device SP is attached to an upper pole 22 of a supporter part 20. A whole part of a lower pole 21 is formed to be a tubular part 21c and a whole part of the upper pole 22 is formed to be a tubular part 22c. A power supply part 14 is connected to the speaker device SP with a wiring cord 23. A route from the power supply part 14 to the speaker device SP through an internal space S of the lower pole 21 and the upper pole 22 is defined as a wiring route where the wiring cord 23 is arranged. The pole 21 and the upper pole 22 are relatively slid so as to enable changing a length L0 of the wiring route. A curled part 23a of the wiring cord 23 is arranged inside the internal space S.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an acoustic conversion unit stand that supports an acoustic conversion unit such as a speaker.

  2. Description of the Related Art Conventionally, there is an extensible stand that can adjust the support height of a stand that supports articles (Patent Document 1 below). This stand can change the support height of articles | goods by connecting a some support | pillar pipe so that expansion and contraction is possible, and expanding and contracting a support pipe.

Utility Model Registration No. 3155574

  By the way, when an acoustic conversion unit such as a speaker is supported on a stand with a variable height, it is necessary to provide a wiring cord for power supply and signal transmission / reception to the acoustic conversion unit. When the stand of Patent Document 1 is used to support the acoustic conversion unit, the height of the acoustic conversion unit can be adjusted, but the wiring cord is basically exposed to the outside. Then, not only the appearance is impaired, but there is a possibility that the wiring cord may be stepped on or caught and damaged. In addition, when the acoustic conversion unit is used for musical instrument performance, it also interferes with performance. In addition, when the stand is contracted, the wiring cord accumulates, which not only deteriorates the appearance but also becomes an obstacle.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide an acoustic conversion unit capable of adjusting the position of the acoustic conversion unit while reducing the external exposure of the wiring cord. It is to provide a stand.

  In order to achieve the above object, the acoustic conversion unit stand according to claim 1 of the present invention includes an acoustic conversion unit (SP) and tubular portions (21c, 22c), and a support unit (20) that supports the acoustic conversion unit. ), And a power supply unit (14) provided in the support unit, and variable means (18, 21, and) capable of changing the length (L0) of the wiring path from the power supply unit to the acoustic conversion unit 22, 19, 26, and 28) and a curled portion (23 a), which is disposed in the wiring path and for supplying power from the power supply unit to the acoustic conversion unit (23 ), And the inner space (S, S1, S2) of the tubular portion of the support portion constitutes at least a part of the wiring path, and the curled portion of the wiring cord is formed of the tubular portion. It is arranged in the internal space.

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the first aspect of the present invention, it is possible to adjust the position of the acoustic converter while reducing the exposure of the wiring cord to the outside.

  According to the second aspect, the height of the acoustic converter can be changed while reducing the exposure of the wiring cord to the outside. According to the third aspect, the sound emission position can be made variable. According to the fourth aspect of the present invention, the external exposure of the acoustic signal cord can also be reduced. According to the fifth aspect, the configuration can be simplified. According to the sixth aspect, the degree of freedom in designing the support column is increased.

It is a perspective view (figure (a)) and a side view (figure (b)) of a speaker system containing a sound conversion part stand concerning a 1st embodiment. It is a longitudinal cross-sectional view of the connection part of a lower pole and an upper pole. It is a side view of a speaker system including an acoustic conversion unit stand according to a second embodiment. It is a longitudinal cross-sectional view (FIG. (A)) of the upper end part vicinity of a pole, and sectional drawing (FIG. (B)) which follows the AA line of FIG. 4 (a). It is a side view of the speaker system of a modification.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIGS. 1A and 1B are a perspective view and a side view, respectively, of a speaker system including an acoustic conversion unit stand according to the first embodiment of the present invention. In the speaker system 100, a speaker device SP is supported on a stand 10 serving as an acoustic conversion unit stand. The stand 10 includes a substantially semicircular leg portion 12 in plan view and a support column portion 20 as a support portion. The leg part 12 contacts the floor surface. The column 20 has a lower pole 21 and an upper pole 22, and the lower end of the lower pole 21 is fixed to the leg 12. The upper half of the upper pole 22 is curved in a substantially semicircular shape when viewed from the side, and an illumination 13 such as an LED is attached to the curved part, and the speaker device SP is attached to the tip of the upper pole 22. Yes.

  The speaker device SP includes a left speaker SPL and a right speaker SPR, but may have a configuration of three or more channels. The speaker device SP can be used for both music reproduction and musical instrument performance reproduction. The stand 10 is provided with a power supply unit 14. For example, the power supply unit 14 is fixed to the leg 12 or the lower pole 21. The power supply unit 14 is connected to a commercial power source (not shown). The power supply unit 14 may include a main unit having an amplifier function and a signal processing function.

  FIG. 2 is a longitudinal sectional view of a connection portion between the lower pole 21 and the upper pole 22. The lower pole 21 and the upper pole 22 are all formed in a tubular shape. In the present embodiment, the entire lower pole 21 is a tubular portion 21c, and the entire upper pole 22 is a tubular portion 22c. A straight portion of the upper pole 22 is configured to be slidable on the inner peripheral side of the lower pole 21. First, the outer shape of the upper pole 22 is slightly larger than the inner diameter of the lower pole 21, the upper pole 22 is inserted into the lower pole 21, and the outer peripheral surface 22b of the upper pole 22 slides with respect to the inner peripheral surface 21a of the lower pole 21. It is possible. An internal space S is formed inside the inner peripheral surface 22 a of the upper pole 22 and the inner peripheral surface 21 a of the lower pole 21. By pressing the lower pole 21 with the fastener 18 penetrating the upper pole 22, the vertical position of the upper pole 22 relative to the lower pole 21 can be fixed. By fixing the insertion depth of the upper pole 22 with respect to the lower pole 21 as desired, the entire length of the support column 20 can be adjusted. Therefore, the arrangement position of the speaker device SP in the height direction can be adjusted.

  The power supply unit 14 and the speaker device SP are connected by a wiring cord 23. Power is supplied from the power supply unit 14 to the illumination 13 and the speaker device SP. A route from the power supply unit 14 to the speaker device SP through the internal space S of the lower pole 21 and the upper pole 22 is a wiring route in which the wiring cord 23 is disposed. The length L0 of the wiring path can be changed by sliding the lower pole 21 and the upper pole 22 relatively. The fastener 18, the lower pole 21, and the upper pole 22 serve as "variable means" that can change the length L0 of the wiring path. The wiring cord 23 may include a cord for transmitting an acoustic signal to the speaker device SP. At least a part of the wiring cord 23 is a curled portion 23a wound in a curled shape (in a spiral shape) (FIG. 2). The curled portion 23a is disposed in the internal space S.

  Since the wiring cord 23 connects the power supply unit 14 and the speaker device SP, the apparent length of the wiring cord 23 is the same as the length L0 of the wiring path. When the positional relationship between the two is changed by sliding of the upper pole 22 with respect to the lower pole 21 (extension / contraction operation of the support column 20), the length L0 changes. However, since the curled portion 23a can be expanded and contracted in the extending direction of the wiring path, the curled portion 23a expands and contracts according to the change in the position of the upper pole 22. As shown in FIG. 1B, the apparent curled portion 23a has a length L1 in the most contracted state and L2 in the most extended state. Thus, the wiring cord 23 is built in the lower pole 21 and the upper pole 22 and is not exposed to the outside. Moreover, even if the support | pillar part 20 expands and contracts, there is no trouble in the electric power supply to the illumination 13 and the speaker apparatus SP.

  The following are assumed as usage modes of the speaker system 100. For example, a chair is placed inside the semicircular shape of the leg 12, and the user sits on the chair and listens to music, or plays a musical instrument by himself and listens to the performance sound. There is also an aspect in which a sound is heard standing inside the semicircular shape of the leg 12 without a chair. The speaker device SP can be adjusted to a desired height by appropriately adjusting the strut portion 20 as described above depending on whether it is sitting on a chair or standing.

  According to the present embodiment, the internal space S of the tubular portions 21 c and 22 c of the support column 20 constitutes the wiring path, and the curled portion 23 a of the wiring cord 23 is disposed in the internal space S. When the length of the wiring path is changed, the support height of the speaker device SP changes. Thereby, the position (height) of the speaker device SP can be adjusted while reducing the exposure of the wiring cord 23 to the outside. In particular, in the present embodiment, since the wiring cord 23 is not exposed at all, the appearance is improved and the wiring cord 23 is protected without fear of being stepped on or caught. Further, the wiring cord 23 does not accumulate even if the support 20 is shortened without disturbing the performance.

  In particular, the lower pole 21 is housed in the upper pole 22, and the strut portion 20 expands and contracts by sliding between them, so that the configuration is simple. If the wiring cord 23 includes a code for transmitting an acoustic signal, the external exposure of the acoustic signal cord can also be reduced. However, the wiring cord 23 may be dedicated for power supply. The entire wiring cord 23 may be a curled portion 23a. The curled portion 23a may be disposed so as to extend only to the internal space S of at least one of the lower pole 21 and the upper pole 22 even in the most extended state.

  By the way, since the acoustic converter is the speaker device SP, the sound emission position can be made variable. Note that the acoustic conversion unit only needs to have a function of converting sound and signals, and for example, may be used mainly as a microphone.

(Second Embodiment)
In the first embodiment, the support column 20 has a configuration in which the straight portion can be expanded and contracted. On the other hand, in the second embodiment of the present invention, the support column 20 includes a support column and an arm (arm unit) whose fixing position is variable.

  FIG. 3 is a side view of the speaker system including the acoustic conversion unit stand according to the second embodiment. The stand 10 includes a leg portion 12 and a column portion 20. The support column 20 has a pole 24 and an arm 25, and the lower end of the pole 24 is fixed to the leg 12. The speaker device SP and the illumination 13 are attached to the arm 25. The arm 25 has a fixing portion 26, and the arm 25 is fixed to the pole 24 by the fixing portion 26.

  FIG. 4A is a longitudinal sectional view in the vicinity of the upper end portion of the pole 24. FIG.4 (b) is sectional drawing which follows the AA line of Fig.4 (a). The pole 24 has a tubular portion 24c over its entire length, and an internal space S1 is formed inside the tubular portion 24c (inside the inner peripheral surface 24a). A rotation shaft 27 of a roller 28 is pivotally supported on the protrusion 24b at the upper end of the pole 24, and the roller 28 is rotatable with respect to the protrusion 24b.

  On the other hand, the arm 25 is also formed in a tubular shape, and an internal space S2 is formed inside thereof. A hole 25 a is formed in the arm 25. The wiring cord 23 passes from the power supply unit 14 through the internal space S1 of the pole 24, exits from the opening above the pole 24, is folded back by the roller 28, and enters the internal space S2 of the arm 25 through the hole 25a of the arm 25. It is connected to the speaker device SP. Thus, the wiring path is mainly constituted by the internal space S1 of the pole 24, the outer peripheral surface of the roller 28, and the internal space S2 of the arm 25. The curled portion 23 a of the wiring cord 23 is disposed in the internal space S 1 of the pole 24.

  As shown in FIG. 4B, the fixing portion 26 of the arm 25 has a fastening surface 26 b having a circular cross section that covers the outer periphery of the pole 24 and a slit 26 a. The pole 24 is inserted into the tightening surface 26 b of the fixing portion 26, and the interval between the slits 26 a is shortened by the fastener 19, so that the fixing portion 26 is fixed to the pole 24 with the pole 24 tightened. When the fastener 19 is loosened to widen the interval between the slits 26a, the fixing portion 26 can slide up and down with respect to the pole 24, and can be fixed at an arbitrary position.

  Therefore, the arm 25 can move in parallel with the pole 24 in the vertical direction. When the arm 25 is lowered, the arm 25 pulls the wiring cord 23 downward, so the roller 28 rotates counterclockwise in FIG. 4A, and the wiring cord 23 on the pole 24 side pulls upward where the roller 28 is located. It is done. Then, the curl part 23a in the internal space S1 extends. When the arm 25 is raised, the movement is reversed, and the roller 28 rotates in the clockwise direction and the curled portion 23a is contracted. That is, by raising and lowering the arm 25, the total length of the wiring path is changed, and accordingly, the curling portion 23a of the wiring cord 23 is expanded and contracted to change the total length. The fastener 19, the fixing portion 26, and the roller 28 are mainly “variable means” that can change the length L0 of the wiring path.

  A restricting portion that restricts the lower limit position of the arm 25 may be provided on the pole 24. When the lower limit position of the arm 25 is restricted, it is desirable that the curl portion 23a is disposed so as to be located in the internal space S1 of the pole 24 even when it extends most.

  According to the present embodiment, it is possible to adjust the position (height) of the speaker device SP while reducing the exposure of the wiring cord 23 to the outside. Can do. In addition, the length of the wiring path can be changed by changing the fixing position of the arm 25 with respect to the pole 24, and the pole 24 itself does not expand and contract due to sliding, so the degree of freedom in designing the pole 24 is increased.

  The curled portion 23a of the wiring cord 23 is disposed only in the internal space S1 of the pole 24. However, the curled portion may be disposed in the internal space S2 of the arm 25 so that the range engaged with the roller 28 does not become the curled portion. Alternatively, the curl portion may be disposed only in the internal space S2 instead of the internal space S1. Although the wiring cord 23 is folded back so as to change the direction by the roller 28 near the upper end of the pole 24, the use of the roller 28 is not essential. For example, the wiring cord 23 may be folded back using a member that does not rotate but has good slippage.

  In the first and second embodiments, the wiring cord 23 includes an acoustic signal cord. However, the present invention is not limited to this. For example, as shown in FIG. 5, a connection portion 29 may be provided at a position higher than the power supply unit 14 in the support column 20, and the acoustic signal transmission cord 30 may be connected to the connection portion 29. In this case, the curled portion 23a may be provided only for the power supply wiring cord 23, and the acoustic signal transmission cord 30 may be configured without the curled portion.

  In each of the above embodiments, from the viewpoint of minimizing the exposure of the wiring cord 23 to the outside, it is essential that the lower pole 21, the upper pole 22, and the pole 24 are formed in a tubular shape over the entire length. Alternatively, at least a portion may be tubular. In that case, the internal space of the tubular portion may constitute at least a part of the wiring path, and the curled portion 23a of the wiring cord 23 may be disposed in the internal space of the tubular portion.

  In each of the above embodiments, the height of the speaker device SP is changed when the length of the wiring path is changed. However, the present invention is not limited to this. For example, the extending direction of the tubular portion may be other than the vertical direction, and the position of the speaker device SP may be changed in the horizontal direction or the oblique direction.

  The configuration for fixing the upper pole 22 to the lower pole 21 (fastener 18 and the like) and the configuration for fixing the arm 25 to the pole 24 (fastener 19 and fixing portion 26 and the like) are examples. The fastening method may be adopted.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

  10 stands (acoustic conversion part stands), 14 power supply parts, 18, 19 fasteners (variable means), 20 support parts (supporting parts), 22 upper poles (second member), 21 lower poles (first member), 21c, 22c tubular part, 23 wiring cord, 23a curl part, 24 pole (post), 25 arm (arm part), 30 acoustic signal transmission cord, SP speaker device (acoustic conversion part), S, S1, S2 internal space , L0 length

Claims (6)

An acoustic converter;
A support portion having a tubular portion and supporting the acoustic conversion portion;
A power supply provided in the support;
Variable means capable of changing the length of the wiring path from the power supply unit to the acoustic conversion unit,
A curl-shaped portion, disposed in the wiring path, and having a wiring cord for supplying power from the power supply unit to the acoustic conversion unit,
The internal space of the tubular portion of the support portion constitutes at least a part of the wiring path, and the curled portion of the wiring cord is disposed in the internal space of the tubular portion. Conversion unit stand.   The acoustic conversion unit stand according to claim 1, wherein the height of the acoustic conversion unit by the support unit changes when the variable means changes the length of the wiring path.   The acoustic conversion unit stand according to claim 1, wherein the acoustic conversion unit is a speaker.   The acoustic conversion unit stand according to claim 1, wherein the wiring cord includes a cord for transmitting an acoustic signal. The support portion includes a tubular first member and a tubular second member slidable on the inner peripheral side of the first member,
The length of the wiring path is changed by relative sliding between the first member and the second member,
The acoustic conversion according to any one of claims 1 to 4, wherein the curled portion of the wiring cord is disposed in an internal space of at least one of the first member and the second member. Department stand. The support portion includes a support column having the tubular portion, and an arm portion configured to support the acoustic conversion unit and have a fixed position relative to the support column.
The wiring cord is folded back in the vicinity of the upper end portion of the column and extended to the arm portion,
The acoustic conversion unit stand according to any one of claims 1 to 4, wherein the variable means changes the length of the wiring path by changing a fixed position of the arm part with respect to the support column. .

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