JPS6029268Y2 - Headphone shaft mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the shaft structure of a headphone having a universal joint type shaft and bearing structure.

Headphones are a speaker system that allows individuals to enjoy music by placing the speakers in close contact with their ears and minimizing sound leakage to the outside world, so traditionally, when wearing headphones, people have been careful not to cause any discomfort to the head or ears. For this reason, many ideas have been made to bring the pad surface of headphones into direct contact with the ear and allow it to move freely.

Among the above-mentioned ideas, the structure supporting the headphone body, which consists of a housing part and a pad surface part connected to the housing part and directly in contact with the ear, is designed to actively conform to the shape of the human head and ears. Some headphones have a universal joint type shaft that allows the headphone body to move freely, and its bearing has a structure.

Figures 1a and 1b are side and front views of a conventional headphone having the above-mentioned universal joint type shaft and bearing structure, and as is clear from the drawings, the shaft 1 at
1”*2at 2” and bearing lb.

lb', 2b, and 2b' are configured to intersect perpendicularly at four locations, with bearings lb, lb', and bearing 2b, respectively.
, 2b', and a shaft 1a in which the housing portion 2 and the first outer frame 1 are independently provided on the second outer frame 6.

1a' and the shafts 2a, 2a' provided on the first outer frame, the ear pads 3 can be rotated back and forth or left and right, and as a result, the ear pads 3 can move in any direction, causing no discomfort to the ears. You can wear the headphones without causing any problems.

However, the cord 4 and plug 5 that transmit electrical signals to the diaphragm provided inside the housing part 2 must be directly inserted into the housing part 2 from the outside, as shown in FIG.
As a result, the movement of the housing portion 2 tends to be abrupt, causing discomfort in the ears.

Furthermore, the plug 5 must be provided separately in the main body, which causes an increase in the number of steps and, in turn, causes cost-cutting.

Therefore, the present invention was devised to eliminate the above-mentioned drawbacks, and consists of a shaft mechanism centered around a plug containing an electric signal line inside, between the outer frame and the housing part. be.

Hereinafter, one embodiment of the headphone shaft mechanism according to the present invention will be described with reference to the accompanying drawings.

2a and 2b are a side sectional view and a front view showing the shaft mechanism of the universal joint headphone according to the present invention, in which 10 is an ear pad that comes into direct contact with the ear, 12 is a capacitor type diaphragm, and 13 is a capacitor type diaphragm. The housing portion 14 is a plug having a shaft mechanism according to the present invention, and the entire 14 includes a cord 16 inside, and is a plug for transmitting an electroacoustic signal transmitted from the cord 16 to the diaphragm 12 via a lead wire 16a. However, in the area A in FIG. 2, it functions as a plug as well as a shaft.

Therefore, the housing part 13 has a shaft 17 provided protruding from the head of the housing 13, and a shaft part 14 of the plug 14.
' is fitted into and pivotally supported by the bearings 18b, 18b' of the first outer frame 18 provided outside the housing 13, so that the housing part 13 and the ear・The pad 10 is the first outer frame 1
It can be rotated left and right with respect to 8.

Next, reference numeral 19 denotes a second outer frame provided outside the first outer frame 18, and as shown in FIG. 18a, 18a'
It is pivoted through.

Therefore, the first outer frame 18 is rotatable back and forth about the shafts 19a, 19a'.

Further, 20 is a headband used when worn on a person's head.

In the above embodiment, the diaphragm 12 is a capacitor type diaphragm, but of course a cone-shaped or dome-shaped diaphragm used in ordinary headphones may also be used.

Since the present invention has the above-mentioned configuration, compared to conventional universal joint type headphones, the plug is used as the axis without providing an electroacoustic signal supply circuit from the outside of the headphone directly to the headphone body. Compared to the universal joint type headphones, the structure is simpler, and since the movement of the headphone body is not obstructed by the cord, the movement of the headphone body is also better, and it can be adapted to the shape of the human head and ears. At the same time, it eliminates the need to install a plug in a new headphone body, and the structure is simplified, which reduces the manufacturing process and leads to cost reductions, which is highly effective.

[Brief explanation of drawings]

FIGS. 1a and 1b are a side view and a front view of a conventional universal joint type headphone. FIGS. 2a and 2b are a side sectional view and a front view showing the shaft structure of the universal joint headphone according to the present invention. 1.18...First outer frame, 2,13...
・Housing part, 3, 10... Ear pad, 4, 16... Cord, 5, 14...
Plug, 6, 19... Second outer frame, law
1a'* 2at 2a't 17t 19
a, 19a'ssam axis, 1b, lb',
2b, 2b'. 18 bt 18”y 18 at 18”” bearing.

Claims (1)

[Scope of utility model registration request] Instead of a pair of housing rotation shaft and bearing provided between the outer frame and the housing that form the universal joint, a plug containing a lead wire for transmitting electrical signals is inserted from the outside to create a plug and rotation shaft. The shaft mechanism of headphones is characterized by: