JPS6098792A - Head phone - Google Patents

Abstract

PURPOSE:To mount a housing securely in an ear-conch and at the same time improve a mounting position by forming the housing into a nearly spherical shape or into a nearly hemispheric shape. CONSTITUTION:A housing 1 storing a speaker unit 10 is formed into a nearly spherical shape for a small housing, and for a large housing the housing 1 is formed into a nearly hemispheric shape. This makes it necessary to provide a mechanism which enables the housing in the direction in correspondence to an ear-conch, thereby improving secure mounting of the housing in the ear-conch.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a conventional structure of a small headphone suitable for listening to, for example, a cassette tape player, a portable radio, a communication device, etc., and its problems. Headphones have a nearly flat surface, which houses the speaker, and require a device to tilt the housing back and forth and up and down in order to apply it evenly to the auricle (auricular shell) and prevent sound leakage, resulting in a complex structure. ing.

In the conventional headphones shown in FIG. 1, 1 is a housing housing a headphone unit (not shown), and 2 is a housing 1.
3 is a spherical part attached to the rear of the housing, 4 is a cutout in a part of the ear pad, and 6 is a notch part of the housing. holder, 6 is a spherical recess provided in a part thereof, γ is a headband, 8 is provided in holder 5, l'L, head hand 7 (I- guide hole for sliding,
9 is provided at one end of the headband 7;
is a stopper that prevents the guide hole 8 from being pulled out.

In the above conventional configuration, the spherical portion 3 is directly connected to the housing 1.
is in the spherical recess 6 of the holder 5, and can freely rotate back and forth and up and down while being in pressure contact L2 due to the elasticity of the notch 4. K, which manufactures the above-mentioned spherical part 3, spherical four part 6, etc., has the disadvantage that the mold etc. are complicated and expensive. Also, since the elastic press-fit can be removed by pulling it, if the holder and the housing are connected by the input cord 1a, when the spherical part 3 is pulled out from the spherical fourth part 6, the input cord 1a
There were also drawbacks, such as the risk of wire breakage due to overexertion. If you are wearing a so-called inner-type headphone, which has a straight pipe housing of about 10 to 20 U and is inserted into the ear shell for listening, the headband will not be comfortable even with the movable device mentioned above. There was also the problem of discomfort inside the ear shell.The present invention solves all of the conventional problems, makes it easy to fit into the ear shell or inside the ear shell, reduces sound leakage, and has a new structure. Our overall objective is to provide headphones that are optimized for l711.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a housing 1 for housing a speaker unit of a henodophone is formed into a spherical or almost hemispherical shape, and when the housing is press-fitted into the ear shell, the direction of the front sound emitting hole is in the direction of the external auditory canal. Walk forward so that you are facing.

DESCRIPTION OF EMBODIMENTS FIG. 2 is a front view of an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the main parts. 1 is a housing, which is different from the conventional example shown in FIG. The holder 5 is connected directly to the housing 1 without a movable device. 10 is a speaker unit, 11 is its diaphragm, 12 is a front sound hole of the housing 1,
13 is a rear sound hole, 14 is a bushing mounting hole, 15 is a bushing, and 16 is an input cord.

To explain how it works, the holder 5 is slid completely up and down with respect to the headband 7, the housing is adjusted to the appropriate position relative to the ear, and then the housing 1 is adjusted by fully utilizing the elasticity of the headband 7. Make sure it fits stably inside the ear shell. By arranging the front sound hole 12 so as to face the external ear canal in this wearing state, the front sound hole 12 is pressed against the wall inside the ear shell, preventing sound emission and generating sufficient sound pressure. If the center of the diaphragm 11 of the unit 1o is aligned with the center of the front sound hole 12, the above effect will be further aided. A rear sound hole 13 is provided on the rear surface of the housing 1 opposite to the front sound hole 12 to adjust frequency characteristics and R7 quality.

The ear hat 2 is not necessarily required, and the surface of the housing 1 may be made of smooth metal, plastic, or soft plastic, or the surface may be treated to look like imitation pearls or colored to look like an accessory. In order to prevent external dust from entering when there are no ear pads, the front sound holes 12 or the rear sound holes 130 may be made extremely small, or they may be used for atmospheric sounds. Cloth or the like may be pasted on the outer or inner surface. The term "approximately spherical" mentioned above includes cases where the side cross section becomes elliptical depending on the size of the housing. Fig. 4 is a sectional view showing another embodiment of the present invention. In the embodiment shown in FIG. 3, if the characteristics are disturbed by the air volume 17 between the front surface of the diaphragm 11 and the front sound hole 12, this can be prevented by reducing the radius of curvature of the diaphragm. The air volume 17 is made smaller. 18 is York, 19
Magnet 120 is a center ball, 21 is a ball plate, and 22 is a voice coil, which has a shape in which the pole plate and center pole protrude completely forward in accordance with the protrusion of the diaphragm 11.

FIG. 6 shows an embodiment in which the diameter of the housing 1 is between 20 and 30 mm, and a portion of the housing is inside the ear shell and most of the person 91 is outside. In this case, if the housing were almost spherical, the overall volume would be too large, and there was no need for it, so we decided to use a semi-spherical housing, and the front sound hole was positioned so that the sound was directed toward the external ear canal without being around the ear shell. It is preferable to install it in a direction where pressure energy is used sufficiently. In this case as well, earbuds 2 may be added to the surface of the housing 1, or may not be provided.

FIG. 6 shows yet another embodiment, in which the holder 6 is not provided, and guide holes s and al are provided in the housing 1 through which the headband 7 passes.

In any of the above embodiments, metal or plastic springs or the like are used, although not particularly shown, so that the holder 5 and the housing 1 can slide against the headband 7 with appropriate stiffness, or Conventionally known techniques such as a stepping mechanism that produces a click feeling may be used. The present invention has the advantage that unlike conventional earphones, a part of the housing does not protrude into the ear canal, but is held within the ear shell, so that it does not cause discomfort to the ear. It is.

Effects of the Invention By forming the shape of the housing in which the speaker unit is fully housed to be approximately spherical in the case of a small housing, and at least approximately hemispherical in the case of a slightly larger housing, the direction of the housing can be adjusted by ear. It does not require a mechanism to move according to the shell, is stably installed in the ear shell, has a comfortable fit, and has excellent effects such as being able to effectively radiate acoustic energy toward the external ear canal. be.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional headphone, Fig. 2 is a front view showing an embodiment of the present invention, Fig. 3 is a cross-sectional view of essential parts of this embodiment, and Fig. 4 is another embodiment of the present invention. Cross-sectional view of Fig. 6, Fig. 6
The figures are side views of still other embodiments. 1...Housing, 10...Speaker unit, 12...Front sound hole, 13...
- Rear sound hole, 16... Input code Name of agent: Patent attorney Toshio Nakao and one other person Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A housing for housing a headphone speaker unit is formed into a substantially spherical or semispherical shape, and a front sound emission hole is formed so that the direction of the front sound emission hole faces toward the external auditory canal when the housing is press-fitted into the ear shell. Headphones that are characterized by: