Earphones

Abstract

To provide an earphone excellent in productivity even when it is provided with a flexible supporter which abuts against an ear pinna.SOLUTION: In an earphone (915), a fitting structure (TK5) of a supporter (14) comprises: first and second housings (11 and 12) constituting a housing which has a space therein; a speaker unit stored in the space; a flexible supporter (14) held between the first and second housings (11 and 12); and an inner frame (13) that regulates reduction of the width of the supporter (14) in a first direction. The inner frame (13) has a first projected part (13e1) that projects to one outer side in the first direction and a second projected part (13e2) that projects to the other outer side in the first direction. The first housing (11) has a first hole (11d) with which the first projected part (13e1) enters to be engaged. The second housing (12) has a second hole (12d) with which the second projected part (13e2) enters to be engaged.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to earphones. [Background technology]

[0002] As described in Patent Document 1, the device consists of a main body that is attached to the auricle and a protrusion that protrudes from the main body. Earphones having a protruding part (supporter) are known. The protruding part is used to attach the main body to the auricle. When the earphone is in this position, it comes into contact with the inner wall of the ear, stabilizing the fit.

[0003] The main body is made of hard resin and the supporter is made of flexible silicone rubber. Therefore, in the past, the housing that is the outer shell of the main body and the supporter were It is integrally formed by insert molding. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-060157 A Summary of the Invention [Problem to be solved by the invention]

[0005] Insert molding requires expensive molds and advanced molding technology, so it is difficult to produce high-quality molds. In addition, the shape of either the housing or the supporter is different. When developing variations in shapes like these, a dedicated mold is required for each shape. Therefore, it is not easy to share parts.

[0006] In this way, earphones equipped with a flexible supporter that contacts the auricle are There was room for improvement in terms of molding productivity.

[0007] Therefore, the problem to be solved by the present invention is to provide a flexible supporter that contacts the auricle. The aim of the present invention is to provide earphones with excellent productivity. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention has the following configuration 1). 1) a first housing that is assembled in a first direction to form a case having an internal space; and A second housing; a speaker unit accommodated in the space; The first housing and the second housing are sandwiched and held therebetween, and the first a supporter that is more flexible than the housing and the second housing; an inner frame that restricts reduction in the width of the supporter in the first direction; Equipped with The inner frame has a first protruding portion protruding outward on one side in the first direction and a second protruding portion protruding outward on the other side in the first direction. A second protruding portion protruding to the side, The first housing has a first hole into which the first protrusion is inserted, and the second housing The earphone has a second hole into which the second protrusion fits. Effect of the Invention

[0009] According to the present invention, the product is excellent in productivity while being provided with a soft supporter that contacts the auricle. This has the effect of [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a vertical cross-sectional view showing a model of the structure of an earphone 91, which is an example of an earphone according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded view of FIG. [Diagram 3]FIG. 3 is a first perspective view of the appearance of the earphone 91A. [Figure 4] FIG. 4 is a second perspective view of the appearance of the earphone 91A. [Diagram 5] FIG. 5 is an assembly diagram of the earphone 91A. [Figure 6] FIG. 6 is a partial cross-sectional view showing a supporter mounting structure TK1 which is a first modified example of the supporter mounting structure TK. [Figure 7] FIG. 7 is a partial cross-sectional view showing a supporter mounting structure TK2 which is a second modified example of the supporter mounting structure TK. [Figure 8] FIG. 8 is a partial cross-sectional view showing a supporter mounting structure TK3 which is a third modified example of the supporter mounting structure TK. [Figure 9] FIG. 9 is a partial cross-sectional view showing a supporter mounting structure TK4 which is a fourth modified example of the supporter mounting structure TK. [Figure 10] FIG. 10 is a partial cross-sectional view showing a supporter mounting structure TK5 which is a fifth modified example of the supporter mounting structure TK. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The earphones according to the embodiment of the present invention will be described using earphones 91 and 91A as examples. . (Example) FIG. 1 is a vertical cross-sectional view showing a model of the structure of an earphone 91, and FIG. The earphone 91 described below is a canal type (earplug type). The left earphones are symmetrical to the right earphones, so we will use the following: The right earphone 91 will be described as a table.

[0012] In FIG. 1, arrows indicate the left, right, top, and bottom directions when the earphone 91 is attached to the right auricle. Therefore, the front is the back of the page and the back is the front of the page.

[0013] The earphone 91 includes a first housing 11, a second housing 12, an inner frame 13, It has a supporter 14 , a speaker unit 82 , and a cord 83 .

[0014] The first housing 11 and the second housing 12 are arranged so that the earphone 91 is held in place when the earphone 91 is placed on the ear. The first and second housings are the head side and the opposite head side, respectively. The two components are assembled in the left-right direction, which is the direction of the arrows, to form a hollow housing 1K that defines a space Va inside.

[0015] The space Va accommodates a speaker unit 82. The speaker unit 82 has a lead. The lead 83a is connected to the cord 83, and the cord 83 containing the lead 83a is extended from the space Va to the second housing. The cord is pulled out through a through hole 122 of a cord pull-out portion 124 formed to protrude from the connector 12. It has been put out.

[0016] The left end of the first housing 11 is formed with a sound tube portion 111 that protrudes leftward. The earpiece 81 is detachably attached to the tube portion 111 and is inserted into the ear canal when the earphone 91 is used. It is attached to.

[0017] The inner frame 13 has a narrow neck portion 1 in the cross-sectional shape shown in FIG. 31a protruding from the bottom end of the base 131 in the left and right directions. The protruding portion 13a protruding to the left is called protruding portion 13a1, and the protruding portion 13a protruding to the right is called protruding portion 13a2. The protruding portion 13a is referred to as a protruding portion 13a2.

[0018] The first housing 11 has a frame engagement hole 11a into which the protrusion 13a1 enters and engages. The second housing 12 is provided with a frame that the protrusion 13a2 enters and engages with. An engagement hole 12a is provided.

[0019] The first housing 11, the second housing 12, and the inner frame 13 are made of hard resin. An example of the resin is ABS.

[0020] The supporter 14 is formed to be more flexible than the first housing 11 and the second housing 12. An example of the material of the supporter 14 is silicone rubber.

[0021] As shown in FIG. 1 and FIG. 2, the supporter 14 has a vertical cross-sectional shape that is open downward. The base 14a has an inverted U-shape, and the lower end of the base 14a is open at the open end. The left outward protrusion 14b is a protruding portion 14a. The protruding portion 14b is a protruding portion 14b1 of the first protruding portion, and the protruding portion protruding outward to the right The portion 14b is defined as a protruding portion 14b2 of the second protruding portion.

[0022] The first housing 11 has a first engagement portion into which the protruding portion 14b1 can enter and engage. The supporter engagement hole 11b is provided, and the second housing 12 has a protruding portion 14b2. A supporter engagement hole 12b is formed as a second engagement portion into which the supporter can be inserted and engaged.

[0023] The earphone 91 is a speaker unit in which the end of the cord 83 is connected to a music playback device or the like. An audio signal is supplied to the speaker unit 82. The speaker unit 82 converts the incoming audio signal into sound. The output sound passes through the internal space of the sound tube 111 and is output to the earpiece 81. It is released to the outside from the tip.

[0024] The earphone 91 is assembled from the disassembled model shown in FIG. 2 as follows: do.

[0025] First, as shown by the arrow DRa in FIG. 2, the inner frame 13 is opened by the supporter 14. The base 131 is fitted into the mouth end so that the neck 131a and the protruding portion 13a of the base 131 are exposed.

[0026] The opening width of the inner surface of the supporter 14 is slightly smaller than the left-right width of the outer surface of the inner frame 13. Since the inner frame 13 is formed to be very small, the inner frame 13 is automatically supported by the friction with the supporter 14. The fitting is maintained in the fitted state without falling off.

[0027] Next, the lead 83a is connected and fixed to the speaker unit 82. The support 14 is held between the first housing 11 and the second housing 12. The integral body is fitted with the inner frame 13 so as to sandwich the integral body, and the assembly shown in FIG. The fitting portion is indicated by a boundary portion 15.

[0028] The first housing 11 and the second housing 12 are fitted together at the boundary 15 by a simple method. The recesses and protrusions may be strongly fitted together, an adhesive may be used, or welding may be performed.

[0029] The supporter 14 is limited to a hollow one having a space V14 formed therein as shown in FIG. It may be a hollow structure with a solid interior.

[0030] As shown in FIG. 1, if the supporter 14 is to be removed, the width of the outer shape in the left-right direction is Even if a force is applied to narrow D14, the inner frame 13 is generally in contact with the open end of the supporter 14. Since they are disposed without any gaps, the width D14 of the supporter 14 cannot be narrowed.

[0031] That is, the inner frame 13 is configured to reduce the width D14 of the supporter 14 in the left-right direction. Regulate.

[0032] This ensures that the supporter 14 will not come off the main body 1 during normal use.

[0033] Therefore, the supporter 14 is formed as an independent member without using insert molding. When assembled as described above, the supporter 14 in the earphone 91 is insert-molded. In practice, this provides a separation resistance strength that is no different from that of the first case.

[0034] In addition, the inner frame 13 is inserted into the open end of the supporter 14 with almost no gap. Supporters with different projection amounts and projection shapes compared to the supporter 14 can also be used with the same inner It is possible to assemble the frames by sharing the same frame 13.

[0035] In this way, even though the earphone 91 is provided with the supporter 14, the earphone 91 can be made using a dedicated mold for insert molding. This eliminates the need for additional work, improving productivity.

[0036] An example of the above model structure designed as a commercial earphone is shown in Figs. The earphone 91A will be described. The earphone 91A is symmetrical in shape for the left and right ears. The right earphone 91A will now be described.

[0037] FIG. 3 is a view from the back of the head with the earphone 91A worn on the right side, and FIG. This is a view of the part as seen from diagonally above and to the front right.

[0038] The earphone 91A has a first housing 11 and a second housing 12 fitted together at a boundary portion 15. The supporter 14 extends upward from the upper diagonal front, which is a part of the circumferential direction of the boundary portion 15. It is sandwiched in an area extending from the rear through to the rear diagonally downward.

[0039] As a result, when the earphone 91A is attached to the auricle, the supporter 14 is adapted to cover the inner wall of the antihelix. Since the earphone 91A comes into contact with a wide area, the earphone 91A fits comfortably on the auricle.

[0040] At the opening end of the supporter 14, an inner frame 13 (support) is held by the supporter 14. (not shown because it is hidden inside the port 14) are the first housing 11 and the second housing 12. It is sandwiched between the two.

[0041] From the through hole 122 of the cord outlet portion 124 of the second housing 12, the cord 8 3 is pulled out to the outside.

[0042] FIG. 5 is an assembly diagram of the earphone 91A.

[0043] The inner frame 13 is shaped like a thin, crescent-shaped bow when viewed from the side (for example, from the left). The protruding portion 13a of the inner frame 13 is formed in such a manner that the protruding portion 13a is At the center, two protrusions 13a1 and 13a2 are formed on the left and right sides, respectively, in the shape of a flange. .

[0044] The first housing 11 is formed with a frame engagement hole 11a into which the protrusion 13a1 can enter and engage. The second housing 12 has a frame engagement hole 12a into which the protrusion 13a2 can enter and engage. a is formed.

[0045] The supporter 14 is higher than the inner frame 13 when viewed from the side (for example, from the left). The supporter 14 is formed in a large crescent-shaped bow. It is formed like a bag with a mouth.

[0046] The protruding portion 14b of the supporter 14 is a portion extending in the longitudinal direction (up and down) at the open end of the supporter 14. In the center of the blade (direction), three protruding parts 14b1 and 14b2 are provided on each side. It is formed in a protruding shape.

[0047] The first housing 11 has a supporter engagement hole 11b into which the protruding portion 14b1 can enter and engage. The second housing 12 is provided with a supporter engaging member that allows the protruding portion 14b2 to enter and engage with the supporter engaging member. A matching hole 12b is formed.

[0048] As a result, earphone 91A can be assembled in the following example procedure.

[0049] First, insert the inner frame 13 into the supporter 14 from the back side as shown by the arrow DRb in FIG. The parts are fitted together to form a single, integrated unit.

[0050] In addition, the speaker unit 8 to which the lead 83a is electrically connected is disposed inside the first housing 11. 2 is placed in the first housing 11 as shown by the arrow DRc. As indicated by the mark DRd, the through hole 122 of the cord outlet 124 of the second housing 12 (see FIG. 3) (see illustration) from the inside and pull it out to the outside.

[0051] Next, the first housing 11 and the second housing 12 are placed together with the supporter 14 and the inner The unit is assembled by sandwiching the one-piece frame 13 therebetween.

[0052] At this time, the protruding portion 13a1 of the inner frame 13 is engaged with the frame engagement portion of the first housing 11. The supporter 14 is engaged with the hole 11a, and the protruding portion 14b1 of the supporter 14 is fitted to the support of the first housing 11. The port is engaged with the port engagement hole 11b.

[0053] The protrusion 13a2 of the inner frame 13 is fitted into the frame engagement hole of the second housing 12. The supporter 14 is engaged with the support 12a of the second housing 12, and the protruding portion 14b2 of the supporter 14 is engaged with the support 12a of the second housing 12. The spring 12 is engaged with the engagement hole 12b.

[0054] The protrusions 13a1 and 13a2 of the inner frame 13 and the frame engagement holes 11a and 12a The frame engagement part FK is also called the frame engagement part FK. At least in the left-right direction of the frame 13 with respect to the first housing 11 and the second housing 12 Movement in a direction perpendicular to the axis is restricted.

[0055] As is evident from the above procedure, earphone 91A and its model, earphone 91, are In addition, the earphones 91A and 91 can be easily assembled without the supporter 14. It will not come off after installation.

[0056] In addition, the earphones 91A and 91 are made of a cushioning material without insert molding. It is possible to manufacture the earphones with a port 14.

[0057] Therefore, molds are inexpensive and components are easy to mold, so molding factories are limited. This makes the earphones 91A and 91 highly productive.

[0058] In addition, the earphones 91A and 91 are provided with supports of different shapes while using the inner frame 13. In this way, the earphones 91A and 91 can be assembled using the same components. This is easy and has excellent productivity.

[0059] The earphones 91A and 91 are made of a first housing 11 and a second housing 12. At least one of the inner frame 13 and the supporter 14 can be made to have a different shape. From the standpoint of sharing parts as well, earphones 91A and 91 are excellent in productivity.

[0060] The embodiment described above is not limited to the above configuration, and any other configuration may be used without departing from the gist of the present invention. The present invention may be modified to a greater extent than the above.

[0061] The attachment structure of the supporter 14 to the first housing 11 and the second housing 12 is as follows: The present invention is not limited to the above-mentioned structure, and may be modified as described with reference to, for example, FIGS. The above-mentioned modifications can be made as shown in Modifications 1 to 5.

[0062] The supporter mounting structures TK1 to TK5 shown in Figs. 6 to 10 are the same as those in Fig. 1. The supporter mounting structure TK shown in part A can be substituted for the supporter mounting structure TK shown in part A. Modifications 1 to 5 in which the rotor mounting structure TK is replaced with the supporter mounting structures TK1 to TK5 The earphones are referred to as earphones 911 to 915. (Variation 1) As shown in FIG. 6, the earphone 911 of the first modification has a supporter attachment structure TK 1 denotes an engagement portion between the inner frame 13 and the first and second housings 11 and 12. There is no portion where the supporter 14 is sandwiched between the inner frame 13 and the first and second housings. It differs from the supporter mounting structure TK in that it has a support part.

[0063] In detail, the supporter 14 is attached to the first housing as in the case of the supporter mounting structure TK. The protruding portion 14b1 engages with the second housing 11, and the protruding portion 14b2 engages with the second housing 12. b2. Furthermore, the supporter 14 is formed as an inner engagement portion 13c on the inner frame 13. The inner engagement portions 13c1 and 13c2 are engaged with the inner engagement portions 14c1 and 14c, respectively. 2. It has an inner flared portion 14c including the inner flared portion 14c.

[0064] In the supporter mounting structure TK1, the supporter 14 is designed to be intentionally removed. Even if we try to narrow D14, the inner frame 13 will not fit the open end of the supporter 14. Since the supporter 14 is not inserted, the width D14 of the supporter 14 cannot be narrowed. The supporter 14 does not come off from the main body 1 after assembly.

[0065] In the supporter mounting structure TK1, the inner frame 13, the first housing 11 and Since the first housing 11 and the second housing 12 are not engaged, The boundary portion 15 where the two engage is positioned by providing a step.

[0066] The inner frame 13 is adhered or fixed to the first housing 11 or the second housing 12. may be fixed by welding to be more firmly integrated. (Variation 2) As shown in FIG. 7, the earphone 912 of the second modification has a supporter attachment structure TK 2 is an engagement portion between the inner frame 13 and the first and second housings 11 and 12; It differs from the support mounting structure TK in that it does not have a support.

[0067] In the supporter mounting structure TK2, the supporter 14 is intentionally removed by adjusting its width. Even if we try to narrow D14, the inner frame 13 will not fit the open end of the supporter 14. Since the supporter 14 is not inserted, the width D14 of the supporter 14 cannot be narrowed. The supporter 14 does not come off from the main body 1 after assembly.

[0068] In the supporter mounting structure TK2, the inner frame 13, the first housing 11 and Since the first housing 11 and the second housing 12 are not engaged, The boundary portion 15 where the two engage is positioned by providing a step.

[0069] The inner frame 13 is adhered or fixed to the first housing 11 or the second housing 12. may be fixed by welding to be more firmly integrated. (Variation 3) As shown in FIG. 8, the earphone 913 of the third modification has a supporter attachment structure TK 3 is a portion where the supporter 14 is sandwiched between the inner frame 13 and the first and second housings. It differs from the supporter mounting structure TK in that it has a

[0070] In detail, the supporter 14 is sandwiched between the inner frame 13 and the first housing 11. The inner overhanging portion 14c1 is sandwiched between the inner frame 13 and the second housing 12. The inner flared portion 14c includes an inner flared portion 14c2.

[0071] In the supporter mounting structure TK3, the supporter 14 is intentionally removed with a width D1 Even if you try to narrow the width 4, the inner frame 13 will fit the open end of the supporter 14 with almost no gap. Since the supporter 14 is inserted, the width D14 of the supporter 14 cannot be narrowed. The motor 14 will not come off the main body 1 after assembly.

[0072] In the supporter mounting structure TK3, the thickness of the first housing 11 and the second housing 12 is Since the assembly position in the height direction is determined by the inner frame 13, The boundary 15 where the gasket 11 and the second housing 12 engage does not need to have a step and is simply in the form of abutment. It is in this state. (Variation 4) As shown in FIG. 9, the earphone 914 of the fourth modification has a supporter attachment structure TK 4 is an engagement portion between the inner frame 13 and the first and second housings 11 and 12; However, it differs from the supporter mounting structure TK in that it is formed protruding toward the space Va side.

[0073] Specifically, the inner frame 13 has a T-shaped protrusion 13d protruding downward in FIG. do.

[0074] The neck of the T-shaped protrusion 13d is provided with a recess into which the end of the first housing 11 enters and engages. The housing recess 13d1 and the end of the second housing 12 are recessed and engaged with each other. A recess 13d2 is formed. The tip of the T-shaped protrusion 13d protrudes into the space Va. .

[0075] In the supporter mounting structure TK4, the supporter 14 is intentionally removed with a width D1 Even if you try to narrow the width 4, the inner frame 13 will fit the open end of the supporter 14 with almost no gap. Since the supporter 14 is inserted, the width D14 of the supporter 14 cannot be narrowed. The motor 14 will not come off the main body 1 after assembly.

[0076] In the supporter mounting structure TK4, the thickness of the first housing 11 and the second housing 12 is The position of the inner frame 13 in the height direction is determined by the T-shaped protrusion 13d of the inner frame 13. However, a protruding portion occurs in the space Va. The space Va is the back cabinet of the speaker unit 82. Since it functions as a back cabinet, there is a risk that it may affect the playback sound of the earphone 914. From the viewpoint of sealing the T, the supporter mounting structure TK1~ does not have any protruding parts in the space Va. The playback characteristics may differ from those of TK3. (Variation 5) As shown in FIG. 10, the earphone 915 of the fifth modification has a supporter attachment structure T K5 is a supporter 14, a first housing 11, and a second housing 12 for an inner frame 13. The supporter mounting structure TK is structured so that it is positioned by engaging with the supporter 12. is different.

[0077] Specifically, the inner frame 13 has a dowel 13e1 and a dowel 13e2 protruding in the left and right directions. It has a dowel 13e including a dowel 13e2.

[0078] The supporter 14 has a dowel hole 14d1 through which the dowel 13e1 and the dowel 13e2 can be inserted. and a dowel hole 14d2.

[0079] The first housing 11 and the second housing 12 are provided with dowels 13e1 and 13e 2 have dowel holes 11d, 12d into which the bolts 11a, 11b can enter and engage.

[0080] In the assembly, the dowels 13e1 and 13e2 of the inner frame 13 are The dowel 13e1 and the dowel 13e2 are inserted through the dowel holes 14d1 and 14d2 of the supporter 14. e2 are formed long enough to protrude further, so that the dowel holes 11 and 12 of the first housing 11 are inserted into the dowel holes 1 and 12 of the first housing 11. 1d, while engaging with the dowel hole 12d of the second housing 12, the first housing 11 and the second housing Assemble it with housing 12.

[0081] In the supporter mounting structure TK5, the supporter 14 is intentionally removed with a width D1 Even if you try to narrow the width 4, the inner frame 13 will fit the open end of the supporter 14 with almost no gap. Since the supporter 14 is inserted, the width D14 of the supporter 14 cannot be narrowed. The motor 14 will not come off the main body 1 after assembly.

[0082] In the supporter mounting structure TK5, the frame engagement part FK is the inner frame 13 The dowels 13e1 and 13e2 of the first housing 11 and the dowel hole 11d of the second housing The corresponding dowel hole 12d of the supporter mounting structure TK5 is also By the engagement of the engagement portion FK, the first housing 11 and the second housing 12 of the inner frame 13 are Thus, movement of the handle 12 at least in a direction perpendicular to the left-right direction is restricted.

[0083] In addition, in the supporter mounting structure TK5, the inner frame 13, the supporter 14, and The first housing 11 and the second housing 12 are positioned by a dowel 13e, which is a single part. This allows the vertical dimension in FIG. 10 to be reduced. Therefore, the earphone 915 can be easily miniaturized.

[0084] Earphones 911-915 equipped with supporter mounting structures TK1-TK5 of modified examples 1-5 The earbuds have a supporter 14 that serves as a cushion without insert molding. Therefore, the mold is inexpensive and the molding factory is not limited. This makes the earphones 911 to 915 highly productive.

[0085] In addition, the earphones 911 to 915 use the inner frame 13 and have supports of different shapes. In terms of sharing parts, earphones 911-915 can be assembled using the same parts. is highly productive.

[0086] The embodiment and modifications 1 to 5 can be freely combined to the extent possible.

[0087] The earphone 91 is limited to a canal type in which the earpiece 81 is inserted into the ear canal. The earphone 91 does not have a sound tube portion 111 and is used by fitting the main body 1 inside the ear E. The device may be of the so-called in-ear type.

[0088] The earphones 91, 91A, 911 to 915 are configured to place the housing 1K on the concha of the user's ear. When the supporter 14 is stored, it is attached so that it abuts against the inner wall of the auricle. is, for example, the inner wall of the antihelix.

[0089] In this worn state, the supporter 14 is usually slightly compressed and is supported by its elastic resilience. Since the inner wall is biased by the force of the pressure applied, the user can feel a comfortable fit and the fit state is stably maintained. .

[0090] The supporter 14 is not limited to abutting on the inner wall of the antihelix, but may be applied to the inner wall of other parts of the auricle. It may be in contact with the surface. [Explanation of symbols]

[0091] 1 Main unit 1K Chassis 11 First Housing 11a Frame engagement hole 11b Supporter engagement hole 111 Sound cylinder part 12 Second Housing 12a Frame engagement hole 12b Supporter engagement hole 122 Through hole 124 Cord outlet 13 Inner frame 13a,13a1,13a2 Protrusion 13c,13c1,13c2 Inner engagement part 131 Base 131a Neck 14 Supporters 14a base 14b, 14b1, 14b2 protruding part 14c,14c1,14c2 Inner overhang 15 Boundary 81 Earpiece 82 Speaker unit 83 Code 83a Lead 91, 91A, 911~915 Earphones D14 (Supporter) Width FK frame engagement part TK, TK1~TK5 Supporter mounting structure Va,V14 Space

Claims

1. a first housing and a second housing that are combined in a first direction to form a housing having an internal space; a speaker unit accommodated in the space; a supporter that is sandwiched and held between the first housing and the second housing and is more flexible than the first housing and the second housing; an inner frame that restricts reduction in the width of the supporter in the first direction; Equipped with the inner frame has a first protruding portion protruding outward on one side in the first direction and a second protruding portion protruding outward on the other side in the first direction, the first housing has a first hole into which the first protrusion enters and engages, and the second housing has a second hole into which the second protrusion enters and engages, the supporter has a first inwardly extending portion sandwiched between the inner frame and the first housing, and a second inwardly extending portion sandwiched between the inner frame and the second housing. The earphones are characterized by:

2. 2. The earphone according to claim 1, further comprising a frame engagement portion that restricts movement of the inner frame relative to the first housing and the second housing in a direction perpendicular to the first direction.

3. 3. The earphone according to claim 1, wherein the housing is fitted in the concha of the auricle, and the supporter is attached to the auricle by abutting against an inner wall of the auricle.

4. 4. The earphone according to claim 3, wherein the inner wall is an inner wall of an antihelix in the auricle.

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