JP3839768B2 - headphone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a headphone provided with a position adjusting means for adjusting a relative position between a cabinet having a headphone driver and a head of a human body. More specifically, the headphone fits to the head regardless of the mounting position. The present invention relates to headphones that further improve the feeling.
[0002]
[Prior art]
A typical headphone has a pair of left and right cabinets with built-in headphone drivers, a headband that supports each cabinet at both ends, and is arched along the head of the human body, and the length of the headband is the length of the human body. Length adjustment means that adjusts according to the size of the head, adjusts the length of the headband according to the size of the user's head and the position of the ear, and the cabinet faces the ear It is possible to fit the position to be.
[0003]
However, this type of headphone has the annoyance that the headband must be adjusted according to the shape of the user's head and the position of the ear each time it is worn. There is provided a headphone that can be easily fitted to the head of a human body without having a means (see, for example, Patent Document 1 below). An example is shown in FIG.
[0004]
This headphone 1 includes a pair of left and right cabinets 2 and 2 each having a headphone driver (not shown) built therein, and supports the cabinets 2 and 2 at both ends, and is a head that is bridged in an arch shape along a human head H. The band 3 is included, and between the headband 3 and the human head H, a part of the head H is pressed to adjust the relative positions of the cabinets 2 and 2 and the head H. Position adjusting means 4 is provided.
[0005]
The position adjusting means 4 includes a pair of head pads 5 and 5 that are in contact with predetermined positions of the human head H opposite to each other, one end connected to each head pad 5 and 5, and the other end connected to the headband 3 and each cabinet. 2 and 2 and a pair of support arms 6 and 6 connected to the joint portion 7 near the base portion.
[0006]
FIG. 7 shows a cross-sectional view of the main part of the position adjusting means 4. The head pad 5 includes a pad shell 52 having a pad portion 51 that contacts the human head H on one surface, and a bearing portion 53 is provided inside the pad shell 52, and is supported by the bearing portion 53. A rotation shaft 61 provided on one end side of the arm 6 (on the side opposite to the joint portion 7) is rotatably supported around a rotation axis L shown in FIG.
[0007]
The support arm 6 is pulled into the joint portion 7 at the other end, and is rotatably supported via a rotating shaft 71 in the joint portion 7. 62 is provided. The locking claws 62 are locked to locking ribs 72 provided on the pull-in portion side of the joint portion 7, thereby preventing the support arm 6 from falling out of the joint portion 7.
[0008]
In the joint portion 7 is housed a pressing spring 73 that always presses the distal end side (head pad 5 side) of the support arm 6 in the direction of the head H of the human body. The pad 5 is biased in the direction of pressing toward the head H of the human body.
[0009]
According to this, when the headphones 1 are mounted on the head H of the human body, the head pad 5 abuts from the top of the head to the side of the head and receives the weight of the headphones themselves. At this time, the head pad 5 rotates about the rotation axis L to fit the shape of the head H of the human body and is supported with an appropriate pressing force via the support arm 6. The load can be reduced.
[0010]
[Patent Document 1]
Japanese Utility Model Publication No. 7-33094
[Problems to be solved by the invention]
However, this type of headphones has the following problems. That is, in the above-described prior art, the head pad 5 is supported so as to be rotatable only in one axial direction (vertical direction) with respect to the support arm 6, for example, off the virtual wearing line connecting both ears and the crown. When the head pad 5 is worn, that is, when the head pad 5 is worn shifted from the top of the head to the front of the head or from the top of the head to the back of the head, the good fit may not be obtained.
[0012]
As one method for solving this, there is known a method in which the head pad 5 and the support arm 6 are connected by a ball joint so that the head pad 5 can be rotated. There was a problem like this.
[0013]
That is, since the headphones 1 are worn on the head H of the human body, it is necessary to design the headphone 1 so that it can withstand a drop impact of at least 1.5 m corresponding to the height of the person. However, when a ball joint is used, it is necessary to design the ball joint to have a larger diameter in order to withstand a drop impact of 1.5 m. In addition, it is not preferable in terms of design.
[0014]
Further, in the conventional headphone 1, a structure in which an impact applied to the head pad 5 in the case of dropping or the like is directly transmitted to the locking claw 62 on the other end side of the support arm 6 through the bearing portion of the joint portion 7. In particular, since the stress of several times the impact applied to the head pad 5 is concentrated on the locking claw 62 due to the lever principle, the locking claw 62 and the locking rib 72 of the joint portion 7 that is the counterpart of the locking claw 62 Damage may occur between.
[0015]
Accordingly, the present invention has been made to solve the above-described problem, and an object of the present invention is to provide a headphone that prevents damage on the bearing side of the above-described support arm due to an impact such as dropping. There is to do.
[0016]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a pair of left and right cabinets with built-in headphone drivers, a headband that supports each cabinet at both ends, and spans an arch along the head of the human body, A position adjusting means disposed between a headband and the head and pressing a part of the head to adjust a relative position between the cabinet and the head; The means supports a head pad that abuts a predetermined position of the head on one end side, and the other end side is rotatable via a bearing means on a joint portion provided on either the headband or the cabinet. In a headphone including a support arm that is pivotally supported, the bearing means is a rotation provided on either the support arm or the joint portion. If consists of a bearing hole provided in the other, the bearing hole, is characterized by comprising a long hole to be movable in a direction intersecting the rotating shaft and the axial direction.
[0017]
According to this, since the pivotal support portion of the support arm with respect to the joint portion is movable, for example, when dropped, the impact applied to the locking claw formed on the other end side of the support arm by the movable portion is released. This prevents damage at the joint. Furthermore, since the entire support arm can move not only in the vertical direction but also in the front-rear direction with respect to the human head, the feeling of fit when worn is further improved.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a headphone position adjusting means according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a rear view, and FIG.
[0019]
The basic configuration of the headphone may be the same as that of the above-described prior art, so the description thereof will be omitted, and the configuration of only the position adjusting means 40 and its peripheral part, which are the main parts of the present invention, will be described below. However, in this embodiment, the head pad is movable with respect to the two axes XY without using a ball joint, and further includes a means for preventing damage at the bearing portion of the support arm against a drop impact. Yes.
[0020]
As shown in FIG. 1, the position adjusting means 40 includes a head pad 50 that contacts the head of a human body, one end connected to the head pad 50 via a connecting member 80, and the other end connected to the headband 3 and the cabinet 2. And a support arm 60 connected to a joint portion 70 provided at each base portion.
[0021]
The head pad 50, the support arm 60, and the joint part 70 are arranged as a pair at positions facing each other across the head, but the configuration is the same, so only one of them will be described here.
[0022]
As shown in FIG. 4, the head pad 50 includes a pad main body 510 that comes into contact with the head of a human body, and a pad base 520 that is attached to the opposite side of the pad main body 510. In this example, the pad body 510 is made of a foamed resin surface coated with a sheet base material, the center is cut out in a donut shape, and the contact surface is curved so that it can be easily fitted along the head. Has been.
[0023]
The pad base 520 is made of a plate material fixed to the back surface (counter contact surface) of the pad main body 510, and is formed to be slightly larger than the outer periphery of the pad main body 510. A flange is formed.
[0024]
The head pad 50 is integrally attached to the connecting member 80. Referring to FIGS. 2 and 3, the connecting member 80 is rotatable about a first rotation axis L <b> 1 in a predetermined direction with respect to the main base 810 that integrally holds the head pad 50 and the main base 810. And a sub-base 820 to be attached. In this example, the first rotation axis L1 coincides with the extending direction of the support arm 60.
[0025]
The main base 810 is made of a molded product such as a synthetic resin, and like the pad main body 510, the main base 810 is curved in a bow shape along the head. The peripheral edge portion 811 of the main base 810 is bent toward the inside (the lower surface side in FIG. 2), and the flange of the pad base 520 is engaged with the groove formed by the bending, whereby the head pad 50 is moved to the main pad 520. The base 810 is integrally held.
[0026]
In the center of the main base 810, an opening 812 for accommodating the sub base 820 is opened. First bearing portions 813 and 813 for pivotally supporting the sub-base 820 about the first rotation axis L1 are provided inside both ends of the opening 812 in the longitudinal direction (vertical direction in FIG. 3). It is provided at a symmetrical position. In this example, the first bearing portions 813 and 813 are formed in a so-called cross-sectional C shape in which a part of the cylindrical portion is cut out.
[0027]
The sub-base 820 is formed of a flat plate-like body disposed in the opening 812 of the main base 810, and the first rotation supported on the first bearing portions 813 and 813 described above is provided on two opposing sides thereof. Shafts 821 and 821 are projected.
[0028]
An opening 822 into which the tip of the support arm 60 is inserted is formed in the center of the sub base 820. On one side of the opening 822, second bearing portions 823 and 823 are provided for pivotally supporting the second rotation shaft 610 formed at the tip of the support arm 60 about the second rotation axis L2. . The second bearing portion 823 has a sleeve shape with a C-shaped cross section like the first bearing portion 813 described above, and is disposed at two adjacent positions on the same side of the opening 812.
[0029]
The rotation axis L1 of the first rotation shaft 821 and the rotation axis L2 of the second rotation shaft 610 are orthogonal to each other, and the first rotation shaft 821 and the second bearing portion 823 of the sub-base 820 have their respective rotation axes L1, L2. Are preferably provided so as to be orthogonal to each other on the same plane. According to this, the sub-base 820 can be thinned.
[0030]
Here, an example of how to assemble the connecting member 80 will be described. First, the sub base 820 is disposed in the opening 812 of the main base 810, and the first rotating shafts 821 and 821 of the sub base 820 are fitted to the first bearing portions 813 and 813 of the main base 810. As a result, the main base 810 and the sub base 820 can be relatively rotated about the first rotation axis L1.
[0031]
Next, the tip of the support arm 60 is inserted into the opening 822 of the sub base 820, and the second rotation shaft 610 of the support arm 60 is fitted to the second bearing portions 823 and 823 of the sub base 820. Thereby, the sub base 820 and the support arm 60 can be relatively rotated about the second rotation axis L2. Thereafter, the head pad 50 is attached to the main base 810. As a result, the head pad 50 is held so as to be rotatable about the respective rotation axes L1 and L2.
[0032]
Referring to FIGS. 2 and 4, support arm 60 is formed of a molded product such as synthetic resin, and in this example, is formed in an arc shape in accordance with the shape of the human head. A second rotating shaft 610 that is pivotally supported by the above-described second bearing portions 823 and 823 is integrally projected at an end portion on the distal end side (head pad 50 side) of the support arm 60. In addition, the support arm 60 may be comprised from wires and plate materials, such as a steel wire.
[0033]
On the other end side of the support arm 60 (on the side opposite to the head pad 50), a bearing portion 620 that is pivotally supported by a rotating shaft 730 provided in the joint portion 70 and a joint portion 70 that extends further from the bearing portion 620. A locking claw 630 housed inside is provided.
[0034]
The bearing portion 620 includes a bearing convex portion 621 projecting from the inner peripheral surface side of the support arm 60, and the bearing convex portion 621 has a width direction (a direction orthogonal to the paper surface in FIG. 4). A bearing hole 622 penetrating along is formed. In this case, the bearing hole 622 is a long hole formed along the protruding direction of the bearing convex portion 621, and the support arm 60 is movable with respect to the rotating shaft 730.
[0035]
The locking claw 630 is formed by bending the end portion of the support arm 60 substantially at a right angle, and abuts against a locking rib 711 provided on the joint portion 70 side to position the support arm 60 at the initial position.
[0036]
With reference to FIG. 4, the joint portion 70 includes a joint base portion 710 that is integrally attached to the end portion of the headband 3, and a lid portion 720 is screwed to the head side of the joint base portion 710.
[0037]
The inside of the joint portion 70 is formed hollow so that the other end side of the support arm 60 can be retracted. In the inside thereof, a rotation shaft 730 that pivotally supports the bearing hole 622 of the support arm 60 and the other end of the support arm 60 are formed. A pressing spring 740 that presses the side and presses the head pad 50 against the head of the human body is provided.
[0038]
A retracting hole 712 for retracting the support arm 60 into the joint portion 70 is provided on the side of the joint base portion 710 opposite to the lid portion 720. A locking rib 711 that is locked to the locking claw 630 of the support arm 60 is formed integrally with a part of the drawing hole 712.
[0039]
In the present invention, as described above, the bearing hole 622 is a long hole formed along the protruding direction of the bearing convex portion 621, and the support arm 60 is movable with respect to the rotating shaft 730. As shown in (a) and (b), the rotating shaft 730 can move in parallel or obliquely within the bearing hole 622.
[0040]
Thereby, for example, when dropped, the impact applied to the locking claw 630 is released, and damage at the joint portion 70 is prevented. Furthermore, since the entire support arm 60 can move appropriately not only in the vertical direction but also in the front-rear direction with respect to the head of the human body, the fit feeling when worn is further improved.
[0041]
In this embodiment, a long bearing hole 622 is formed on the support arm 60 side, and the rotating shaft 730 which is the counterpart is provided on the joint portion 70 side. However, the rotating shaft is provided on the support arm 60 side, and the joint A long bearing hole may be formed on the portion 70 side.
[0042]
Moreover, although the joint part 70 is provided in the edge part of the headband 3, it may be in another position of the headband 3, and may be provided in a cabinet if possible, and the basic form mentioned above is incorporated. If possible, the mounting position is not particularly limited.
[0043]
When wearing the headphones, the cabinet (not shown) is gripped by hand, and the headband 3 is directly worn along the head so that the cabinet is attached to the ear.
[0044]
At this time, the head pad 50 abuts from the top of the head to the temporal region and is lifted along the head while resisting the pressing force of the pressing spring 740. At that time, the head pad 50 can be rotated along the shape of the head of the human body around the respective rotation axes L1 and L2, so that the head pad 50 is held at the most stable position. Moreover, since a part of weight of a cabinet is supported by the head pad 50, the load of the cabinet with respect to an ear is reduced.
[0045]
Furthermore, even if the headphones are dropped, the head pad 50 is movable in the biaxial direction, and there is a play space between the bearing hole 622 of the support arm 60 and the rotation shaft 730 of the joint portion 70. Headphones that are less susceptible to breakage and less damaged are obtained.
[0046]
【The invention's effect】
As described above, according to the present invention, a pair of left and right cabinets incorporating a headphone driver, a headband that supports each cabinet at both ends, and spans an arch along the head of the human body, A position adjusting means disposed between a headband and the head and pressing a part of the head to adjust a relative position between the cabinet and the head; The means supports the head pad that contacts the predetermined position of the head on one end side, and the other end side is rotatable via a bearing means to a joint portion provided on either the headband or the cabinet. In a headphone including a support arm that is pivotally supported, the bearing means is a rotating shaft provided on either the support arm or the joint portion. The bearing hole is provided on the other side, and the bearing hole is a long hole that allows the rotary shaft to move in a direction intersecting the axial direction, thereby being strong against dropping impact. In addition, a headphone that can be surely fitted to the head is provided.
[Brief description of the drawings]
FIG. 1 is a perspective view of a headphone position adjusting means according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the position adjusting unit as viewed from the front side.
FIG. 3 is a rear view of the position adjusting unit viewed from the back side.
FIG. 4 is a waist cross-sectional view of the position adjusting means.
FIG. 5 is an explanatory diagram illustrating a connection structure between a support arm and a joint portion.
FIG. 6 is a perspective view showing a state in which conventional headphones are attached to the head.
FIG. 7 is a cross-sectional view of a main part of a conventional headphone position adjusting means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Headphone 2 Cabinet 3 Headband 4,40 Position adjustment means 50 Head pad 510 Pad main body 520 Pad base 60 Support arm 610 2nd rotating shaft 620 Bearing part 621 Bearing convex part 622 Bearing hole 630 Locking claw 70 Joint part 710 Joint base part 711 Locking rib 720 Lid portion 730 Rotating shaft 740 Pressing spring 80 Connecting member 810 Main base 811 Peripheral portion 812 Opening portion 813 First bearing portion 820 Sub base 821 First rotating shaft 822 Opening portion 823 Second bearing portion H Head L1 , L2 rotation axis

Claims (1)

A pair of left and right cabinets with built-in headphone drivers, a headband that supports each cabinet at both ends, and is arched along the head of the human body, and is disposed between the headband and the head. And a position adjusting means for adjusting a relative position between each cabinet and the head by pressing a part of the head, and the position adjusting means has a predetermined position of the head on one end side. A headphone comprising a support arm that supports a head pad that abuts on the other end and is rotatably supported via a bearing means at a joint provided on either the headband or the cabinet at the other end side In
The bearing means includes a rotating shaft provided in one of the support arm or the joint portion and a bearing hole provided in either of the other, and the bearing hole defines the rotating shaft as an axial direction thereof. A headphone comprising a long hole that is movable in a crossing direction.

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