JPH069293U - Headphones and other operating mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size and weight of the operating parts such as headphones. [Structure] An operating body 3 for volume control and an operating body 6 for mode switching are arranged on both sides of a substrate 5 in an operation unit 1 of headphones.
The operation unit 3 is operated to adjust the volume, and the operation unit 6 is operated to switch the reproduction mode to monaural or stereo.
Since the operating bodies 3 and 6 are arranged on both sides of the substrate 5, the area of the substrate 5 can be reduced, and the operating unit 1 can be made small and lightweight. Therefore, since the headphones do not interfere when they are used or carried, it is possible to improve the usage state and eliminate the need for clips.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an operation section mechanism suitable for application to, for example, headphones.

[0002]

[Prior art]

 For example, some headphones have an operation unit arranged between the speaker unit and the plug for switching volume and mode (switching between stereo and monaural). FIG. 9 shows a conventional operation unit.

In FIG. 1, reference numeral 30 denotes an operation section, and a rotary volume control dial 31 and a slide mode switch (stereo / monaural changeover switch) 32 are arranged on one side of the operation section 30. Has been done. The volume control dial 31 and the mode switch 32 are arranged on a printed circuit board 33, as shown in FIG.

A mover (not shown) of a variable resistor 34 is connected to the tip of the shaft 31 a of the volume adjusting dial 31. An operator (not shown) of the mode switch 32 switches the reproduction mode to stereo or monaural depending on how the conductive pattern (not shown) arranged on the printed circuit board 33 contacts.

As shown by the chain double-dashed line in FIG. 9, cords 35 and 36 are led out from both ends of the operation unit 30. A speaker unit (not shown) is connected to the tip of the cord 35, and a plug (not shown) for connecting to the headphone jack of the audio equipment body is connected to the tip of the cord 36.

FIG. 8 is a circuit diagram of the headphones. The left and right audio signals of the plug 21 are supplied to the audio terminals 21A and 21B, which are connected to the ground terminal 21C of the plug 21 through the left and right speaker units 22A and 22B and the variable resistors 23A and 23B for adjusting the volume. . The mover positions of the variable resistors 23A and 23B are adjusted by the volume adjusting dial 31 (see FIGS. 9 and 10) of the operation unit 30.

Reference numeral 24 is a slide type changeover switch, and this changeover switch 24 is for changing the reproduction mode between stereo and monaural. The changeover switch 24 is composed of a movable terminal 25 and fixed terminals 26a, 26b and 27. The movable terminal 25 is connected between the audio terminal 21A and the speaker unit 22A. The fixed terminals 26a and 26b are in an electrically floating state, and the fixed terminal 27 is connected between the audio terminal 21B and the speaker unit 22B.

The position of the movable terminal 25 is adjusted by the mode switch 32 (see FIGS. 9 and 10) of the operation unit 30 (see FIG. 9). When the reproduction mode is stereo, the movable terminal 25 is connected to the fixed terminals 26a and 26b so that the left audio signal SL is supplied to the speaker unit 22A and the audio terminal 21B of the plug 21 as shown by the solid line in FIG. The supplied right audio signal SR is supplied to each speaker unit 22B.

When the reproduction mode is monaural, the movable terminal 25 is connected to the fixed terminal 27 so that the left audio signal SL and the right audio signal SR are mixed as shown by the chain double-dashed line in FIG. It is supplied to the units 22A and 22B, respectively.

[0010]

[Problems to be solved by the device]

 In the example of FIG. 9, since the volume adjusting dial 31 and the mode switch 32 are arranged on one surface side of the printed circuit board 33 arranged in the operation unit 30, the area of the printed circuit board 33 becomes large. Therefore, the operation unit 30 becomes large, and the headphones become an obstacle when using or carrying the headphones. Further, since the operation section 30 is large and becomes an obstacle during use, a clip (not shown) is arranged on the other surface side of the operation section 30. Therefore, the number of parts was increasing.

Therefore, the present invention aims to reduce the size and weight of the operation unit such as headphones.

[0012]

[Means for Solving the Problems]

 In this invention, the operating body is arranged on both sides of the substrate arranged in the operating section for operating the headphones or the like.

[0013]

[Action]

 For example, since the operating bodies, for example, the operating body 3 for adjusting the volume and the operating body 6 for mode switching are arranged on both sides of the substrate 5 in the operation unit 1 such as headphones, the area of the substrate 5 can be reduced, The operation unit 1 can be made small and lightweight. Therefore, the headphones or the like are not in the way when they are used or carried, and the usage condition is good. In addition, since the operating unit 1 is small and lightweight, the operating unit 1 does not get in the way during use, and it is not necessary to use a clip.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. The operation unit of this example is applied to headphones, for example. 1 is a plan view of the operation unit 1, and FIG. 2 is a bottom view thereof.

In the figure, reference numeral 1 is an operating portion, which is formed in an elongated shape.

As shown by the chain double-dashed lines in FIGS. 1 and 2, cords 9A and 9B are led out from both ends of the operation unit 1. The operating portion 1 is arranged so that its longitudinal direction is along the lead-out direction of the cords 9A and 9B. A speaker unit (not shown) is connected to the tip of the cord 9A, and a plug (not shown) is connected to the tip of the cord 9B.

Reference numeral 1A is an upper case of the operation unit 1 and 1B is a lower case. By fitting the upper case 1A and the lower case 1B, a printed circuit board 5 and the like, which will be described later, are installed in the operation unit 1 (see FIG. 3). As shown in FIGS. 1 and 3, the upper case 1A is formed with a recess 1a along the longitudinal direction on the front surface side thereof. In addition, a long hole 1b is formed in the recess 1a as shown in FIG.

Reference numeral 3 denotes an operation body for adjusting the volume, and this operation body 3 slides along the longitudinal direction of the concave portion 1a of the upper case 1A. The operation body 3 is provided with convex non-slip portions 3a on its front surface side at appropriate intervals. However, in the operating body 3, as shown in FIGS. 1 and 3, a square hole 3b is formed in the center of the non-slip portion 3a. Then, a manipulator 4a connected to a mover (not shown) of the variable resistor 4 described later is fitted into the square hole 3b, and its tip projects (see FIG. 3).

Further, contact pieces 3c as shown in FIG. 3 are provided in a protruding manner at both ends (only one end is shown in FIG. 3) in the lateral direction on the bottom surface side of the operating body 3. The contact piece 3c makes the operating body 3 slide well on the surface of the recess 1a of the upper case 1A.

As shown in FIG. 3, the variable resistor 4 is arranged on one surface side of a printed board (board) 5. A resistor (not shown) is arranged on the printed circuit board 5. The resistance value is changed by changing the position of a mover (not shown) with respect to the resistor.

As shown in FIG. 3, the variable resistor 4 is restricted from moving in the longitudinal direction by the restricting portion 1d of the upper case 1A. The printed circuit board 5 is positioned in the operation unit 1 by a regulation unit (not shown).

As shown in FIG. 2 and FIG. 3, the lower case 1B has a long hole 1c formed substantially in the center on the back surface side thereof. This long hole 1c is set so that the sliding distance of the operation element 6 for mode switching, which will be described later, is slightly longer. Further, in the lower case 1B, a taper surface 1e is formed on the surface side of the elongated hole 1c. The tapered surface 1e is provided to facilitate the operation of the operator 8b of the operator 6.

Reference numeral 6 denotes an operation body for a mode switch, which is slidably arranged on the other surface side of the printed board 5. The operating body 6 is arranged so as to correspond to the operating body 3, as shown in FIG. As shown in FIGS. 5 to 7, the operating body 6 is outsert-molded with a contact 7 having conductivity and a slide body 8 made of resin.

As shown in FIG. 5, the metal contactor 7 has a substantially U-shaped leaf spring shape. The base portion 7a of the contactor 7 biases an engaging projection 8f of the slide body 8 described later in the counterclockwise direction. At the tip of the contactor 7, contact portions 7b to 7d that are bent and formed in a substantially U shape as shown in FIG. 5 are formed. As shown in FIG. 7, the contact portions 7b to 7d are formed at three places at regular intervals.

Since the base portion 7a of the contactor 7 is regulated by the connecting portion 8c of the slide body 8, the contact portions 7b to 7d are biased in the clockwise direction as shown by the solid line in FIG. Then, when the contact portions 7b to 7d are in contact with the other surface of the printed circuit board 5 which will be described later, the contact portions 7b to 7d tilt in the counterclockwise direction as shown by the chain double-dashed line in FIG. Then, as shown by the arrow in FIG. 5, the base portion 7a urges the engaging protrusion 8f of the slide body 8 counterclockwise by the spring property of the contactor 7.

The slide body 8 includes a frame portion 8a, a manipulator 8b, and a connecting portion 8c. As shown in FIGS. 6 and 7, the frame portion 8a has a substantially H-shaped planar shape. As shown in FIGS. 5 and 6, the frame portion 8a has arcuate protrusions 8d formed at both ends of its upper surface. The protrusion 8d is for smoothly sliding the operating body 6 by making point contact with the back surface of the lower case 1B.

Further, as shown in FIG. 7, the frame portion 8a has arcuate projections 8e formed on the lower surfaces of both ends thereof. The protrusion 8e is for making the operation body 6 slide smoothly by making point contact with the other surface of the printed circuit board 5.

As shown in FIGS. 5 and 6, the manipulator 8b is formed in a prism shape in the center of the upper surface of the frame portion 8a. Then, when the operating body 6 is arranged in the cases 1A and 1B, the operating element 8b can be inserted into the elongated hole 1c as shown in FIG. Is set.

As shown in FIGS. 5 and 6, the connecting portion 8c is formed from one end side of the frame portion 8a toward the other end side. As shown in FIG. 5, the connecting portion 8c has a substantially arc-shaped engaging projection 8f formed on the upper surface of the tip thereof.

The engaging projection 8f engages with the engaging hole 1f (see the broken line in FIG. 2) formed in the lower case 1B to position the operating body 6. The engagement holes 1f are formed at both ends of the elongated hole 1c in the longitudinal direction, as shown by the broken line in FIG.

Conductive parts 5a and 5b as shown in FIG. 4 are formed on the other surface side of the printed circuit board 5. The conductive portions 5a and 5b are formed in parallel along the longitudinal direction of the printed circuit board 5. Solder portions 5d as shown in FIG. 4 are formed on both ends of the conductive portions 5a and 5b, respectively. Then, lead wires (not shown) of the cords 9A and 9B are connected to the soldered portion 5d.

Further, as shown in FIG. 4, in one conductive portion 5a, a connection portion 5c is formed near the middle thereof toward the other conductive portion 5b side. The connecting portion 5c is formed so as to be able to come into contact with the contact portions 7c and 7d, as shown by the chain double-dashed line in FIG. Further, the other conductive portion 5b is formed so as to be always in contact with the contact portion 7b. The contact portion 7c is for ensuring the conductivity between the contactor 7 and the connecting portion 5c.

The contact 7 corresponds to the mover 25 in the circuit of FIG. 8 and is connected to the audio terminal 21A. The connecting portion 5c of the conductive portion 5a corresponds to the fixed terminal 26 in the circuit of FIG. 8, and the conductive portion 5b corresponds to the solid terminal 27 in the circuit of FIG. Since the headphone circuit has the same configuration as that shown in FIG. 8, detailed description thereof will be omitted.

Then, at the position where the operator 8b of the operating body 6 is shown by the solid line in FIG. 2, the contact portions 7b to 7d are held at the positions shown by the alternate long and short dash line in FIG. In this state, since the contact portions 7c and 7d are not in contact with the contact portion 5c of the conductive portion 5a, the circuit in FIG. 8 is in a solid line state and is in a stereo reproduction state.

At the position where the operator 8b is shown by the two-dot chain line in FIG. 2, the contact portions 7b to 7d are held at the positions shown by the two-dot chain line in FIG. In this state, the contact portions 7c and 7d are in contact with the connection portion 5c, and the contact portion 7b is in contact with the conductive portion 5b. Therefore, in the circuit of FIG. Becomes

Then, the volume is adjusted by sliding the operation body 3 for volume adjustment arranged on the upper case 1A of the operation unit 1. The mode is switched by sliding the mode switching operation body 6 arranged in the lower case 1B of the operation unit 1.

According to the operating body 6 of this example, since the urging force is applied to the connecting portion 8c by the base portion 7a of the contactor 7, it is possible to reliably engage the engaging protrusion 8f with the engaging hole 1f. The operation body 6 can be operated smoothly and satisfactorily.

According to this example, since the operation body 3 for adjusting the volume and the operation body 6 for mode switching are arranged on both sides of the printed circuit board 5, the area of the printed circuit board 5 can be reduced and the operation unit 1 can be downsized. , Can be made lighter. Therefore, according to the present example, for example, since the headphones do not get in the way when they are used or when they are carried, they can be used well and the clip can be eliminated.

In the above-described embodiment, the operating bodies 3 and 6 arranged on both sides of the operating portion 1 are for volume adjustment and mode switching, but the operating body is not limited to this. In short, the other surface of the printed circuit board 5 on which the variable resistor 4 is arranged may be effectively used and a conductive pattern for switching modes may be arranged.

Further, in the above-mentioned embodiment, the mode changeover switch 25 has shown the one for switching the reproduction mode between the stereo mode and the monaural mode, but the mode changeover switch is not limited to this and, for example, further switches to the voice multiplex. The same can be applied to a device configured to be able to do so.

Further, in the above-described embodiment, the operation section mechanism is applied to the operation section of the headphone, but this operation section mechanism can be similarly applied to the operation sections of other devices.

[0042]

[Effect of device]

 According to this invention, since the operating bodies are arranged on both sides of the board in the operation section such as headphones, the area of the board can be reduced, and the operation section can be made small and lightweight. Therefore, according to the present invention, the headphone or the like does not become an obstacle when it is used or carried, the usage condition can be improved, and the clip can be eliminated.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a bottom view of the embodiment.

FIG. 3 is a cross-sectional view taken along the line I-I of FIG.

FIG. 4 is a bottom view of the printed circuit board according to the embodiment.

FIG. 5 is a side view of the operating body of the embodiment.

FIG. 6 is a plan view of the operating body of the embodiment.

FIG. 7 is a bottom view of the operating body of the embodiment.

FIG. 8 is a circuit diagram of headphones.

FIG. 9 is a plan view of a conventional example.

FIG. 10 is a diagram showing a main part of a conventional operating body.

[Explanation of symbols]

 1 Operation part 1A Upper case 1B Lower case 3,6 Operating body 5 Printed circuit board 9A, 9B Code

Claims (1)

[Scope of utility model registration request] 1. An operating section mechanism for headphones or the like, wherein operating bodies are provided on both surfaces of a substrate arranged in an operating section for operating headphones and the like.