JPS6314553Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an audio headphone, and particularly to a small headphone suitable for listening to reproduction signals of portable equipment such as cassette tape players and portable radios.

Conventional configuration and problems Headphones have conventionally been structured so that two speaker units are connected by a headband, and a large pad provided on each speaker unit covers the entire ear shell (auricle). However, by making the headband slightly thinner and reducing the diameter and thickness of the speaker unit, the size of the pads was reduced to just enough to cover part of the ear shell (approximately 25 to 40 mm in outer diameter of the pads). The number of lightweight headphones has increased. Recently, it has become even smaller, with an outer diameter of about 10-odd millimeters, and even if it does not enter the external ear canal, it fits into the recess 2 of the ear shell (pinna) 1, as shown in Figure 1, and the sound emitting surface becomes smaller. A small headphone unit 3 located at the entrance of the external ear canal is used. Note that 4 is a cord led out from the back of the headphone connected inside the headphone unit. Headphones of this shape usually do not use a headband, so they are popular among people, especially the elderly, who are reluctant to wear a headband on their head. However, users' preferences vary; some prefer a headband, while others prefer a type that is attached to the inside of the ear, and it has been difficult to satisfy both users.

Purpose of the invention This invention can be used by attaching a headband and pressing the pad against the outer surface of the ear shell, or by removing the headband and placing only the speaker unit inside the ear shell. The purpose is to provide headphone.

Structure of the invention The invention consists of a small-diameter headphone unit having a connector, a housing part having a hollow part into which the headphone unit is attached, and a headband part to which two holder parts each holding two housing parts are attached at both ends. The input cord is directly connected to the connector of the headphone unit, and the headphone unit can be used by being housed in the ear shell, while the two headphone units are each held in the cavity of the housing part, and the headphone unit is held in the cavity of the housing part. Connect the holder part holding the headphone unit with the headband part, connect the connector of the input cord and the connector of the headphone unit held in the housing part through the hole that communicates with the hollow part provided in the housing part, and then connect the holder part holding the headphone unit with the headband part. It has a configuration that makes it possible to use.

An embodiment of the present invention is shown in Fig. 2 and subsequent figures. 11 is a headphone unit with an inner ear piece.
A speaker unit (not shown) is housed inside 2, and the front surface is covered with a sponge-like pad 13 made of breathable foamed resin or cloth.

Note that the pad 13 may be omitted depending on the case. A connector 14 is provided at the rear of the main body 12 and is composed of, for example, a hollow cylindrical conductor 15 and a pin-shaped conductor 16 implanted in the center thereof.
This connector 14 is connected to the headphone unit 1.
It protrudes downward from the center line of 1.

A connector 17 is provided at the tip of the input cord 23 and is compatible with the connector 14, and is composed of a cylindrical conductor 18, an insulator 19, and a hollow cylindrical conductor 20. The conductor of the connector is provided with appropriate spring properties so that when the connector 17 is inserted into the connector 14, it is held with appropriate stiffness. This connector is just an example, and other types of connectors may be used. Note that 21 is a knob of the connector 17, and 22 is a cord protection bushing.

Figure 3 shows two headphone units 11 and 1.
1' and input cords 23, 23' to the connector 14.
This figure shows a state in which they are connected by inserting the connector 17 into them. 24 is a part 25 where two input codes are integrated, and each input code 23, 2
3' is a protection member at the branch point, and 26 is an input plug connected to a sound source device. Note that each input cord 23, 23' may be formed to have the same length,
Alternatively, one may be short and the other may be long.

Next, the headphone units 11, 1 of this embodiment
1' will be used to assemble a headphone with a headband. FIG. 4 is a sectional view of the assembled state. 30 is a housing, 31 is a collar 32 provided on the periphery of the housing 30
This is a pad attached to cover this.

33 is a cavity provided in the center of the front of the housing;
At several locations on the inner circumferential wall of the cavity 33, spring-like pieces 34 are provided that protrude inward, as shown in FIG. The headphone unit 11 is pushed into the cavity 33 of the housing 30, and the rear body 12 of the headphone unit 11 is inserted into the spring-like piece 3.
It is held by being in elastic contact with 4. Note that this holding may be done by a structure such as a bayonet. Reference numeral 35 denotes a spherical projection provided at the rear of the housing 30 for rotatable connection with a holder, which will be described later, and has a crack at its tip.

Reference numeral 36 denotes a hole provided so that the outside of the lower rear part of the housing 30 and the cavity 33 communicate with each other. 37
38 is a rib portion provided at the bottom of the headphone unit 11 and extending along the axial direction of the headphone unit;
is a groove in the lower part of the cavity 33 of the housing 30 into which the rib part 37 is inserted.

A holder 40 holds the housing 30 and is slidably attached to the headband 50. Reference numeral 41 denotes a spherical hollow portion that fits into the spherical protrusion 35 of the housing 30. Reference numeral 42 denotes a communication hole through which the head band 50 is inserted, and a portion of the rear surface of the holder 30 is open, and an elastic piece 43 is provided in this communication hole. Therefore, the elastic force of the elastic piece 43 is applied to the headband 50 within the communication hole 42, and the holder 40 can be moved against a certain degree of sliding resistance while being held by the headband 50. Note that 51 is a stopper provided at the lower end of the headband 50 to prevent it from coming off. Reference numeral 52 denotes a projection provided on the headband 50, which defines the sliding range of the holder 40.

When using the above configuration as an ear shell insertion type headphone, the connectors 14 and 1 of the headphone units 11 and 11' are connected as shown in FIG.
Connectors 17, 17' of input cords 23, 23' are connected to terminals 4'.

Next, when using it as a headband type headphone, holders 4 are attached to both ends of the headband 50.
0 and 40' are slidably attached, and housings 30 and 30' are attached to holders 40 and 40'. and housing 30,
Connectors 17 and 1 are installed in the hollow parts 33 and 33' of 30'.
Insert the headphone units 11, 11' removed from the headphone unit 7' from the rear and remove the spring-like pieces 34 as shown in FIG.
The main bodies of the headphone units 11 and 11' are elastically held by the headphone units 11 and 11'. Next, by connecting the input cord connector 17 to the connector 14 of the headphone unit 11 inside the housing using the hole 36 of the housing 30, the headphone can be used as a headband type headphone as shown in FIG.

In the above configuration, since the headphone unit and the input cord can be connected to and separated from each other using the connector, the user can easily assemble the headphone for either the ear shell insertion type or the headband type. be. Also, it is of a headband type and elastically holds the headphone unit 11 in the housing 30, but the connector 14 at the rear of the headphone unit 11 and the connector 1 of the input cord 23 are connected to each other.
Since the headphone unit 7 is connected through the hole 36 of the housing 30, the headphone unit 11 will not fall off from the housing 30. Especially connector 14
protrudes downward from the axis of the headphone unit 11, so the connector 17 can be inserted from below the housing and connected to this connector 14.
The shapes of the housing 30 and the drawer of the input cord 23 can be made compact. Furthermore, since the connector 14 faces downward, when it is connected to the connector 17 through the hole 36 of the housing 30, even if the headphone unit 11 tries to move in its axial direction (the direction in which it falls off), the connector connection portion will not be able to move within the hole 36. Since it hardly moves in that direction, it is possible to prevent not only the headphone unit 11 from falling off, but also the shaking of the headphone unit 11.

Further, a rib portion 37 is provided in the lower part of the headphone unit 11, and a groove 38 is provided in the housing 30, and the headphone unit 1 is inserted into the hollow portion 33 of the housing 30 so that the rib portion 37 is inserted into the groove.
1, the headphone unit 1
1 is regulated to ensure that the connector 14 faces the hole 36 of the housing 30. Therefore, it is very convenient when connecting the connector 17 to the connector 14.

Furthermore, in this embodiment, due to the illustrated configuration, a sufficient volume can be felt even when used as a headband type. That is, as shown in FIG. 4, when the headphone unit 11 is installed in the cavity 33 of the housing 30, the front end surface of the headphone unit 11 is configured to protrude forward from the front surface of the pad 31.

With this configuration, when worn on both ears, the headphone unit 11 is located in the ear rather than the front surface of the pad 31, so it is closer to the eardrum, and sufficient volume and texture can be obtained from the acoustic input signal.

In order to further enhance this effect, it is desirable that the pad 31 be sufficiently thick (for example, 10 mm or more), or that the pad itself or only its surface be made of an impermeable material. That is, if the pad 31 is made of a material such as foamed urethane and is sufficiently thick and soft, even if the surfaces of the headphone unit 11 and the pad 31 are substantially the same plane when the headphone unit 11 is not worn on the head, the headband 50 will not disturb the headband 50 when worn. The pressure force causes the headphone unit 11 to protrude into the ear shell, and the same effect as when the headphone unit 11 is made to protrude from the surface of the pad 31 in advance is obtained. Note that sound holes can be provided on the rear surfaces of the headphone unit 11 and the housing 30 as required.

Effects of the invention The present invention allows the input cord to be connected directly to the headphone unit and used as a headphone inserted into the ear shell.On the other hand, a holder is slidably provided on the headband, a housing is attached to the holder, and the headphone unit is attached to the housing. It can also be used as a headband type headphone by attaching it and connecting the input cord to the internal headphone unit through the hole in the housing. That is, it can be assembled freely according to the usage preference, and the assembly is very easy as it only involves connecting connectors. Furthermore, the input cord and the headphone unit mounted in the housing are connected to each other through a hole provided in the housing, so that the mounted headphone unit does not easily fall off from the housing. As described above, the present invention provides a practically excellent headphone that can be easily assembled and used in either the ear shell insertion type or the headband type.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional headphone in use, Fig. 2 is a perspective view of a headphone unit showing essential parts in an embodiment of the present invention, and Fig. 3 is a perspective view of a headphone unit connected to an input cord. FIG. 4 is a sectional view of essential parts in a state assembled using a headband, FIG. 5 is a side view of the housing, and FIG. 6 is a front view showing how the headband type is used. 11, 11'...Headphone unit, 14,
14'...Connector, 17,17'...Connector,
23, 23'...Input cord, 30, 30'...Housing, 33...Cavity, 36...Hole, 40...
...Holder, 50...Headband.

Claims (1)

[Scope of utility model registration request] The headphone unit has a connector and is dimensioned so that it can be held buried in the ear shell, and 2 parts from the middle.
Each branched end has an input cord having a connector compatible with the connector of the headphone unit, a cavity for holding the headphone unit, a hole for connecting a connector communicating with this cavity, and an input cord on the outer periphery. The headphone unit includes a housing portion having an earmuff portion having a larger diameter than the headphone unit portion, a holder portion to which the housing portion is attached, and a headband portion connecting the two holder portions, and the headphone unit portion is connected to the connector of the input cord. It can be used by connecting directly, and the two holder parts are connected with a headband, the housing part is attached to the holder part, the headphone unit part is held in the cavity of the housing part, and the input cord is connected through the hole. A headphone characterized in that the connector is configured so that it can be used by connecting it to a connector of a headphone unit inside a cavity.