JP7338325B2 - Headbands and headphones for headphones - Google Patents

Description

The present invention relates to headbands for headphones and headphones.

Japanese Patent Laid-Open No. 2002-200002 describes headphones equipped with a headband that allows fine adjustment of the lateral pressure applied to the head during use. This headphone includes a headband including a leaf spring that curves corresponding to the user's head, an adjusting member arranged outside the leaf spring for adjusting the distance between both ends of the leaf spring, and an adjusting member. and a position adjustment mechanism for adjusting the position.

In the headphone disclosed in Patent Document 1, the user adjusts the position of the adjustment member using the position adjustment mechanism, thereby changing the distance between both ends of the leaf spring and adjusting the side pressure.

JP 2017-098869 A

Many mass retailers allow customers to listen to headphones and select headphones with the sound quality they prefer. On the other hand, in so-called overhead type headphones equipped with a headband, the so-called lateral pressure that urges the temporal region of the head when worn on the head differs from one headphone to another depending on the size and shape of the customer's head. becomes.
Therefore, even if the customer likes the sound quality of the headphone after listening, it is often the case that the customer gives up purchasing the headphone if the lateral pressure is not to their liking.
From that point of view, the headband of the headphone of Patent Document 1 has a desirable structure, but there is room for improvement in that the number of parts is large, the structure is complicated, the cost is high, and there are many restrictions on the appearance design.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a headband for headphones and a headphone that can control the cost increase and have a high degree of freedom in appearance design even if the lateral pressure can be adjusted.

In order to solve the above problems, the present invention has the following configurations.
1) An arcuately curved outer frame portion located outside and an inner frame portion located inside along the outer frame portion form an arcuate space along the outer shape and are located on at least one end side . a band base formed with a first flexural rigidity as a sleeve having a core accommodating portion that opens at the opening ;
a core material that is curved in an arc shape, is removably inserted into the core material accommodating portion, and has a second bending rigidity that is greater than the first bending rigidity;
consists of
The opening portion of the core housing portion is a headband for headphones which is separated from the end portion of the band base by a predetermined distance .
2) a pair of main bodies for left and right ears containing speaker units;
and the headband for headphones according to 1), wherein the pair of main body portions are connected to both ends thereof.

ADVANTAGE OF THE INVENTION According to this invention, although lateral pressure adjustment is possible, the effect that a cost rise is suppressed and the degree of freedom of an external design is high is acquired.

FIG. 1 is a front view of a headphone 91 that is an example of a headphone according to an embodiment of the invention. FIG. 2 is a cross-sectional view taken along line S2-S2 in FIG. FIG. 3 is a front view showing the core material 3 attached to the band portion 2 of the headphone 91. As shown in FIG. FIG. 4 is a view taken on arrow Ya in FIG. FIG. 5 is a first perspective view of the A portion in FIG. 1, looking up from the front diagonally lower right side of FIG. FIG. 6 is a second perspective view of the A portion in FIG. 1, looking up from the front and diagonally lower right of FIG. FIG. 7 is a schematic front view for explaining the actions when the core members 3A and 3B are attached to the band portion 2. FIG.

A headphone according to an embodiment of the present invention will be described with a headphone 91 of an example.

(Example)
FIG. 1 is a front view of headphones 91 in a natural state. The headphone 91 is a so-called overhead type headphone that includes a band portion 2 that is a headband worn on the user's head. FIG. 2 is a cross-sectional view taken along line S2-S2 in FIG.

The headphone 91 includes a pair of main body portions 1 for right and left ears, and a band portion 2 as a headphone headband connecting the pair of main body portions 1 . The band portion 2 includes connecting portions 5 that connect the main body portion 1 to both ends thereof.
The body portion 1 has a housing 11, a speaker unit 12 housed inside the housing 11, and a pad portion 13 detachably attached to the housing 11 and in contact with the ear or the head when the headphone 91 is used.

The connecting portion 5 has a support plate 14 , a main body support portion 15 , an extension piece 16 and an extension piece support portion 17 .
The support plate 14 has a main body support portion 15, and the main body support portion 15 supports the main body portion 1 so as to be able to swing, for example.
The extension piece 16 extends upward from the upper end portion of the support plate 14 and is supported by an extension piece support portion 17 . The extension piece support portion 17 supports the extension piece 16 so as to be vertically movable and maintainable at any vertical position.

When the headphones 91 are worn on the head, the band portion 2 is elastically deformed in the widening direction with respect to the natural state shown in FIG.
Therefore, the pair of main body portions 1 having the pad portions 13 press the temporal region in a direction toward each other due to the elastic repulsive force against the deformation generated in the band portion 2 . The pressure with which the body portion 1 presses the temporal region is referred to as lateral pressure.

As shown in FIGS. 1 and 2, the band portion 2 has an arc-shaped band base 2K and a core member 3 inserted inside the band base 2K.
The band base body 2K is formed by combining an arc-shaped outer frame portion 21 located outside and an arc-shaped inner frame portion 22 along the outer frame portion 21 and located inside.

The outer frame portion 21 and the inner frame portion 22 are made of a resin material and have flexibility in the diameter expansion/contraction direction. Specifically, the band base body 2K formed of the outer frame portion 21 and the inner frame portion 22 without including the core member 3 maintains the arc shape shown in FIG. 1 in a natural state, and has the first bending rigidity. It has flexural rigidity St2 and can be deformed in the direction of diameter expansion/contraction by an external force.

The bending rigidity St2 and the elastic repulsive force of the band base body 2K, which is configured by the outer frame portion 21 and the inner frame portion 22 without including the core material 3, are such that sufficient lateral pressure is generated when the headphone 91 is worn on the head. not big.
On the other hand, the flexural rigidity St3 of the core material 3 serving as the second flexural rigidity is greater than the flexural rigidity St2, and the elastic repulsive force when deformed by the same deformation amount is also greater than that of the band base 2K.
That is, by inserting the core material 3 into the band portion 2 of the headphone 91, sufficient lateral pressure can be obtained for use while being worn on the head.

As shown in FIG. 2, the inner frame portion 22 has, on an outer side surface 22e, a groove portion 22a extending in the longitudinal direction and hollowed out from the outside toward the inside. The cross-sectional shape of the groove portion 22a is, for example, a flat rectangular shape that is thin in the thickness direction.
The groove portion 22a is formed from a first end portion TB1 at one end (the left end in FIG. 1) of the inner frame portion 22 to at least a position near a second end portion TB2 at the opposite end (the right end in FIG. 1). It is
In the band base body 2K, the groove portion 22a is closed by the outer frame portion 21 and forms an arcuate space V2 along with the inner surface 21c of the outer frame portion 21 along the outer shape.
That is, the band base 2K is formed as a sleeve having a bag portion 22c forming the space V2.

Specifically, the bag portion 22c opens toward the first end TB1 of the band base 2K, extends longitudinally in a curved shape along the outer shape inside the band base 2K, and extends in the vicinity of the second end TB2. is formed as a bottomed bag-like portion having a bottom portion 22a1 (see FIG. 1).
The band base 2K may have a through-hole that opens on the second end TB2 side in place of the bag portion 22c as well as on the first end TB1 side.
That is, the band base body 2K has a bag-like or through-hole core material accommodating portion that opens at least one end (first end) side and accommodates the core material 3 .
Here, the case where the core material containing portion is the bag portion 22c will be described.

As shown in FIGS. 3 and 4, the core member 3 has, for example, an arcuate curved base portion 3a. The base 3a is, for example, a curved plate-like member.
At one end TB3a of the base 3a, an outer protrusion 3b extending in the width direction and protruding radially outward at a height t3 and an inner protrusion 3c protruding inward are formed.
The outer protrusion 3b protrudes, for example, in a semi-cylindrical shape, and the inner protrusion 3c protrudes in a triangular or quadrangular prism shape.
In this example, the base portion 3a has a constant width D3 and a constant thickness t3 in portions other than the outer protrusion 3b and the inner protrusion 3c, and is made of a material such as hard resin or springy metal. there is
The core material 3 maintains the curvature radius R in a natural state as the degree of curvature, has a bending rigidity St3 that is greater than the bending rigidity St2 of the band base 2K, and is elastically deformable in an expansion/contraction direction that changes the curvature radius R. is.

FIG. 5 is a perspective view of the A portion in FIG. 1, looking up from the front diagonally lower right side of FIG. Specifically, FIG. 5 shows an outlet 22c1 of the bag portion 22c at the first end portion TB1 of the inner frame portion 22 and its vicinity. Also shown is a part of the end TB3b (see FIG. 3) of the base portion 3a of the core material 3 to be inserted into the bag portion 22c, which is the leading side of insertion.

As shown in FIG. 1, the first end TB1 of the inner frame portion 22 separates from the main body portion 1 as it separates from the outer frame portion 21 side in the height direction, which is the thickness of the inner frame portion 22 in the radial direction. It becomes 22 d of inclined surfaces which inclined in the direction. The bag portion 22c opens at an opening portion 22c1 of the inclined surface 22d.

A concave portion 21a is formed in the outer frame portion 21 at a position separated from the opening portion 22c1 by a predetermined distance in the longitudinal direction.
The predetermined distance is the distance at which the outer projecting portion 3b naturally enters the recess 21a when the core member 3 is inserted into the bag portion 22c and the end portion TB3b is in contact with the bottom portion 22a1 of the bag portion 22c.
The formation position of the concave portion 21a in the width direction of the outer frame portion 21 is a position corresponding to the opening portion 22c1. In addition, the width and length of the recess 21a in the width direction and the length direction of the outer frame portion 21 are such that when the end portion TB3b of the core member 3 is inserted into the bag portion 22c from the opening portion 22c1, the width and length of the recess portion 21a are the same as those on the opposite side. The outer projection 3b of the end portion TB3a is formed to be larger than the outer shape of the outer projection 3b in a plan view so that the outer projection 3b can enter.

The inner surface 21c of the outer frame portion 21 has an inclined portion 21b on the opposite side of the opening 22c1 of the recess 21a, which is inclined so as to gouged deeper from the inner surface 21c as the distance from the opening 22c1 increases.

With the configuration described above, the headphone 91 is used by inserting the core material 3 into the band base 2K.
The insertion of the core material 3 into the band base body 2K is performed, for example, as follows.
As shown in FIG. 5, the base portion 3a of the core material 3 is inserted into the bag portion 22c from the opening 22c1 with the end portion TB3b on the side where the outer protrusion 3b and the inner protrusion 3c are not formed as the leading end. (see arrow DRa).
As the insertion of the base portion 3a into the bag portion 22c progresses and the end portion TB3a of the base portion 3a approaches the opening portion 22c1, as shown in FIG. ), and when the insertion is further advanced, the outer protrusion 3b is fitted into the recess 21a, and the core member 3 is held by the band base 2K.
Deformation of the base portion 3a progresses gently as the outer projecting portion 3b slides on the inclined portion 21b and rises. As a result, the worker can feel good when inserting the core material 3 into the band base body 2K, which is completed by the entry of the outer projection 3b into the recess 21a.

The core material 3 inserted into the band base body 2K can be removed by, for example, putting a finger on the inner protrusion 3c and pulling it out from the bag part 22c. That is, the inner projecting portion 3c functions as a finger rest portion.
Since the outer projecting portion 3b is formed in a semi-cylindrical shape, it can be easily engaged with the recessed portion 21a without being caught. leave well.
Since the inner protrusion 3c is formed in a triangular prism shape or a quadrangular prism shape, the operator can firmly put his/her finger on the inner protrusion 3c without slipping, and the work of extracting the core material 3 can be reliably performed. can be done.
These allow the operator to easily insert and remove the core member 3 from the band base 2K.

The radius of curvature of the band base 2K depends on the radius of curvature in the natural state of the core material 3 held by the band base 2K. For example, when the degree of curvature of the core material 3 is indicated by the radius of curvature R, the band base 2K functions as a headband having a curved shape with the radius of curvature R in its natural state, as shown in FIG.
That is, the band portion 2 of the headphone 91 can change the degree of curvature of the band base 2K according to the degree of curvature of the core material 3 attached to the band base 2K. A radius of curvature can be used as a numerical index of the degree of curvature.

The radius of curvature of the band base 2K affects the lateral pressure when the headphones 91 are used. That is, the smaller the radius of curvature of the band base 2K, the wider the band base 2K spreads when the headphone 91 is worn on the head. Therefore, the elastic repulsive force of the core material 3 is increased in use, and the lateral pressure, which is the force of the pad portion 13 of the main body portion 1 urging the head, is increased.

Differences in lateral pressure due to differences in the radius of curvature R of the core material 3 will be described with reference to FIG. 7, which is a schematic diagram.
When the core material 3 having the curvature radius R inserted in the headphone 91 is replaced with the core material 3A having the curvature radius RA smaller than the curvature radius R in the natural state, the curvature radius of the band portion 2 is the same as that of the core material 3A. It becomes smaller according to the radius of curvature RA, and the distance between the pair of body portions 1 in the natural state becomes smaller (see arrow A).
Therefore, the lateral pressure during use of the headphone 91 using the core material 3A is greater than the lateral pressure when the core material 3 is used.

On the other hand, when the core material 3 having the curvature radius R inserted in the headphone 91 is replaced with the core material 3B having the curvature radius RB larger than the curvature radius R in the natural state, the curvature radius of the band portion 2 is the same as that of the core material. The distance between the pair of body portions 1 in the natural state increases according to the radius of curvature RB of 3B (see arrow B).
Therefore, the lateral pressure during use of the headphone 91 using the core material 3B is smaller than the lateral pressure when using the core material 3B.

In this way, the user can set the lateral pressure of the headphones 91 to a desired level by, for example, selecting from among a plurality of core members 3 having different radii of curvature and attaching them to the band base 2K.

As described above, the headphones 91 can adjust the side pressure only by replacing the core material 3 . That is, the headphone 91 has a small number of parts, a simple structure, and is capable of adjusting the lateral pressure while suppressing an increase in cost.
In addition, in the headphones 91, most of the core material 3 is removably accommodated in the band base 2K when in use, so there are few restrictions on the design of the band portion 2, and the degree of freedom in appearance design is high. In addition, the portion of the core material 3 exposed to the outside is positioned inside the band base 2K and is difficult to be visually recognized from the outside. Therefore, the appearance design of the headphone 91 is ensured with high quality.

The embodiments described in detail above are not limited to the configurations described above, and modifications may be made without departing from the gist of the present invention.

As the band portion 2, an example has been described in which the outer projecting portion 3b of the core member 3 is the first engaging portion and the concave portion 21a of the band base 2K is the second engaging portion so that both engaging portions can be engaged. may be vice versa. That is, the band portion 2 has the first engaging portion on the side of the core member 3 as a recessed recess, and the first engaging portion on the side of the band base 2K as a protruding portion. The part may be engageable.

The structure for attaching the core material 3 to the band base body 2K is not limited to the structure for attaching the core material 3 to the band base body 2K by engaging the first engaging portion of the core material 3 with the second engaging portion of the band base body 2K. For example, the core member 3 may be attached to the band base 2K with screws.

The headphone 91 can adjust the side pressure during use by replacing the core material 3 with one having at least one of different bending rigidity and curvature radius.
For example, the second core material 3, which has the same radius of curvature R as the first core material 3 but different bending stiffness St3, has different repulsive forces when deformed to expand by the same amount when worn on the head. . Therefore, the lateral pressure can be adjusted.
The flexural rigidity St3 of the core material 3 can be set based on the material or cross-sectional shape.
The core material 3 is not limited to a curved plate-shaped member, and may be, for example, a curved columnar or rod-shaped member.

At least a part of the band base 2K may be formed with a window formed of a light-transmitting material, and the presence or absence of the core material 3 inserted in the bag 22c may be visually recognized from the outside through the window.
As a result, the presence or absence of the core material 3 can be visually determined, thereby improving insertion discrimination. The flexural rigidity St3 or curvature radius R of the core material 3 inserted into 2K can be grasped without actually wearing the headphone 91 .
Alternatively, the window portion may be made of a transparent material among light-transmitting materials, and the outer surface of the core material 3 may be provided with a display of characters, symbols, patterns, or the like. As a result, the user or the like can visually recognize these indications given to the core material 3 through the window portion of the band base 2K, thereby improving the design of the headphone 91. can be obtained without removing the core material 3, thereby improving convenience.

Manufacturers and sellers of the headphones 91 can sell the headphones 91 through the following sales methods.

The seller prepares in advance a plurality of types of core materials 3 having different flexural rigidity St3 or different curvature radii R so that a plurality of different side pressures can be obtained when the customer tries to wear the headphones 91 on the head, and the customer selects them. keep it possible.
When the customer purchases the headphone 91, he or she selects appropriately a plurality of types of core materials 3 having different flexural rigidity St3 or different curvature radii R, attaches them to the band base 2K in order, and actually wears them on the head to feel the lateral pressure. be compared.
By this trial fitting, the customer is asked to select the type of the core material 3 that provides the desired lateral pressure. Then, the seller can prepare the core material 3 of the type selected by the customer as a finished headphone in which the core material 3 of the type selected by the customer is inserted into the bag portion 22c of the band base 2K, or the core material 3 of the type selected by the customer himself/herself. and a semi-finished product headphone to which the core material 3 is not inserted are sold in association with each other.
The core material 3 is also sold separately, and is used when sharing the headphone 91 with other people or when enjoying changing the side pressure.

1 main body 11 housing 12 speaker unit 13 pad 14 support plate 15 main body support 16 extension piece 17 extension piece support 2 band 2K band base 21 outer frame 21a recess 21b inclined portion 21c inner surface 22 inner frame 22a Groove 22a1 Bottom 22c Bag 22c1 Opening 22d Inclined surface 22e Outer surface 3, 3A, 3B Core material 3a Base 3b Outer projection 3c Inner projection 5 Connecting portion 91 Headphone D3 Widths R, RA, RB Radius of curvature St2, St3 Bending Rigidity TB1 First end TB2 Second ends TB3a, TB3b End t3 Thickness V2 Space

Claims (5)

The outer frame portion is curved in an arc, and the outer frame portion positioned outside and the inner frame portion positioned inside along the outer frame portion form an arc-shaped space along the outer shape, and the opening is located on at least one end side . a band base formed with a first flexural rigidity as a sleeve having a core housing portion that opens at
a core material that is curved in an arc shape, is removably inserted into the core material accommodating portion, and has a second bending rigidity that is greater than the first bending rigidity;
consists of
The headband for headphones , wherein the opening of the core housing is a predetermined distance from the end of the band base . a band base having a first flexural rigidity, which is curved in an arc, has a core material accommodating portion which extends in the longitudinal direction and is open on at least one end side;
a core material curved in an arc shape, removably inserted into the core material accommodating portion of the band base body, and having a second bending rigidity greater than the first bending rigidity;
consists of
The core material has a first engaging portion that protrudes or recesses in the radial direction at one end, and the band base body has the first engaging portion for the core material inserted into the core material accommodating portion. A headband for headphones, characterized by having a second engaging portion engageable with the portion. 3. The headband for headphones according to claim 2, wherein said one end of said core member has a finger hook portion which protrudes without being engaged with said second engaging portion. 3. The band substrate has a light-transmitting portion, and the core material inside the band substrate can be visually recognized from the outside through the light-transmitting portion. Headband for headphones as described. a pair of main body portions for left ear and right ear housing speaker units;
and a headband for headphones according to any one of claims 1 to 4, wherein the pair of main body portions are connected to both ends thereof.

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