JP3786111B2 - headphone - Google Patents

Description

  The present invention relates to a headphone in which an electroacoustic transducer can be easily set in an ear hole by adjusting a mounting dimension according to the size of a person's head, and in particular, has a simple structure but a length. The present invention relates to a thin and lightweight headphone that can reliably give a click feeling during adjustment.

  Conventionally, generally, this type of headphones includes, for example, those shown in FIGS. FIG. 15 shows a vertical in-the-ear headphone, which is connected to a pair of headphone main bodies 1 (only one headphone main body 1 is shown) and a length adjustment mechanism and a drop prevention mechanism. And a headband 4.

  The headphone main body 1 includes a housing 5 in which an electroacoustic conversion unit is accommodated, and a hanger 6 that is continuously provided integrally with a base portion of the housing 5. As shown in FIGS. 16 to 18, the hanger 6 has a cylindrical shape and extends upward, and a long hole 7 communicating with the axial hole 6 a is provided on the inner surface, and one of the long holes 7 is provided. On the side, a guide edge 6b is formed to prevent the tip of the headband 4 from coming off. Further, an elastic piece 8 is provided on the cylindrical body portion 6 c at the tip of the hanger 6 by cutting out the periphery in a U-shape, and an engaging convex portion 9 is formed at the inner end of the elastic piece 8. Reference numeral 10 denotes a punched hole provided in order to mold the elastic piece 8 by punching with a mold.

  Further, the headband 4 has arm portions 11 inserted into the axial holes 6a of the hanger 6 at both ends, and a continuous uneven portion 12 in which wave-shaped unevenness is continuous in the axial direction on the inner surface of each arm portion 11. Is provided. A U-shaped stopper piece 13 is integrally formed at the tip of the arm portion 11, and a claw portion 14 is provided on the outer surface of the free end, and one claw portion 14 is provided on the outer surface of the free end. The cylindrical portion 6c is configured to be able to contact the edge of the long hole 7 side.

  A length adjusting mechanism for adjusting the length of the headband 4 while providing a click feeling with the elastic piece 8 and the engaging convex portion 9 of the hanger 6 and the arm portion 11 and the continuous concave-convex portion 12 of the headband 4. Is configured. Further, the cylindrical body portion 6c of the hanger 6 and the stopper piece 13 and the claw portion 14 of the arm portion 11 constitute a removal prevention mechanism for preventing the headband 4 from coming out of the headphone main body 1.

  FIG. 19 shows an example of a mold for injection-molding the headphone body 1 having the above-described configuration with plastic (for example, ABS resin). The cavity-side mold 15 and the core-side mold 16 are shown in FIG. And a side mold 17. The cavity side mold 15 is provided with a projecting portion 18 for forming the punch hole 10 and the inner surface of the elastic piece 8. The projecting portion 18 is a recess for forming the engaging convex portion 9 of the elastic piece 8. 19 is provided and is movable in the vertical direction indicated by the arrow. Further, the core side mold 16 is provided with a protruding portion 20 that forms the axial hole 6a and the elongated hole 7 of the hanger 6, and a partition portion 21 that surrounds the elastic piece 8 in a U-shape. It can be moved in the vertical direction indicated by the arrow. Further, the side mold 17 is provided with a convex portion 23 that forms an opening 22 at the tip of the axial hole 6a of the hanger 6, and is movable in the left-right direction indicated by arrows.

However, in the conventional headphones as described above, the continuous uneven portion 12 of the length adjusting mechanism is provided in the arm portion 11, and the arm portion 11 is inserted into the axial hole 6 a of the hanger 6 to engage the elastic piece 8. Since the convex portion 9 is engaged with the continuous concave-convex portion 12 and the continuous concave-convex portion 12 is provided on the side of the headband 4 on which a bending moment acts when the headphones are attached or detached, the strength of the headband 4 is increased. It is necessary to set the required thickness on the basis of the cross-sectional area of the concave portion where stress concentration occurs. Therefore, the thickness is increased by a thickness t _{1 obtained} by pulling the concave portion from the convex portion of the continuous concave and convex portion 12. There was a need.

Also in the drop prevention mechanism, the stopper piece 13 of the arm portion 11 is formed in a U-shape, and a claw portion 14 is provided at the free end, and this claw portion 14 is engaged with the cylindrical body portion 6c of the hanger 6 to provide a head. Since the structure prevents the band 4 from coming off, in addition to twice the wall thickness t ₂ required for the strength of the arm portion 11, the gap t ₃ required for the die cutting structure of the mold for injection molding. Need to be considered. Accordingly, there is a problem that the thickness of the arm portion 11 cannot be made smaller than 2t ₂ + t ₃ .

In addition, since the claw portion 14 is provided at the free end of the stopper piece 13 on the folding side, the insertion length s ₂ of the arm portion 11 is set to be longer by the folding length s ₁ to the folded portion of the stopper piece 13. There is a need. Therefore, the effective stroke L of the arm portion 11 to be inserted into the axial hole 6a of the hanger 6 is shortened by folding length s _1, it was also a problem that can not take longer effective adjustment range of the head band 4.

  Further, in general, the headphone main body 1 needs to be subjected to printing coating for the purpose of increasing the commercial value, and the conventional headphone main body 1 is made of ABS for the reason that the base material is not required and can be manufactured at a low cost. Although a resin has been widely used, an ABS resin as a material of a member that repeatedly undergoes bending deformation is unsuitable for both rigidity and durability.

  Furthermore, since the elastic piece 8 is provided on the hanger 6, the molds 15, 16, and 17 for injection-molding the headphone main body 1 with plastic or the like are complicated, and the cost of the mold is increased. there were.

Moreover, as a conventional headphone, there exists a thing as described in patent document 1, for example. This patent document 1 describes a headband for headphones.
Further, other examples of conventional headphones include those described in Patent Document 2 and Patent Document 3, for example.
JP-A-6-38286 Japanese Patent Laid-Open No. 62-150994 Japanese Utility Model Publication No. 7-42296

  The problem to be solved is that the structure is relatively complicated and it is impossible to reliably provide a click feeling when adjusting the length, and it is impossible to realize a reduction in thickness and weight.

In order to solve the above-described problems and achieve the above object, the present invention can freely slide a hanger provided with an electroacoustic conversion unit with respect to a headband, for example, as shown in FIGS. In the headphone attached to the hanger, the hanger is formed into a concave shape in cross section with a synthetic resin, and a plurality of concave and convex portions are continuously provided in the concave shape along the slide direction. And an insertion portion into which the arm portion of the headband is inserted at the other end portion corresponding to the one end portion, and a main claw for bridging the concave side walls at the concave upper portion. Rutotomoni provided receiving portion integrally has a drilled vent holes in the bottom position of the concave facing the main claw receiving portion, hangers, one side wall of the side walls of the concave at the top of the concave cross section On the other side wall Ribs projecting toward the integrated, headband molded by synthetic resin, extending from the arm portion of the headband is provided with a thin elastic piece having a thickness of from headband, uneven tip portions of the elastic pieces Engagement protrusions are provided in one piece to elastically contact the part to give a click feeling, and a rising locking part and its rising locking are provided near the arm part of the headband and the base part of the elastic piece. and an inclined portion where the height is gradually reduced toward the tip from the part provided with the main pawl portion formed integrally, when the slide for length adjustment by inserting the arm portion of the headband to the insertion portion of the hanger Further, the main claw portion is locked to the main claw receiving portion to prevent the hanger from falling off the headband.

Since the present invention is configured as described above, when the arm portion of the headband is inserted into the insertion portion of the hanger of the headphone body, and the arm portion is slid in the direction in which the axial hole extends for length adjustment, The engaging convex portion at the tip of the arm portion moves while overcoming the concave and convex portions of the continuous concave and convex portions of the hanger. As a result, the mounting dimensions can be easily adjusted in multiple steps while the structure is simple and thin and lightweight, and when the engaging convex part gets over the concave and convex part of the concave and convex part, a so-called click feeling is generated and the length is adjusted. You can feel the senses clearly. Further, the main pawl portion provided in the vicinity of the engaging portion, since the rising engagement portion provided in the main pawl portion immediately before the headband get out of the hanger is engaged with the Shutsume receiving portion, the hanger from the headband Can be reliably prevented from falling off.

  The structure of the headphones was simplified, and a click feeling when adjusting the length could be surely given, and a reduction in thickness and weight could be realized.

  Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 9 show a first embodiment of the present invention, FIG. 1 is a perspective view showing the overall configuration, FIG. 2 is a front view showing a part of the usage state, and FIG. 3 is a hanger for a headphone body. 4 is a right side view of the headphone main body, FIG. 5 is a left side view of the headphone main body, FIG. 6 is a front view showing the arm portion of the headband, and FIGS. 7A and 7B are arm portions and hangers. FIG. 8 is a cross-sectional view showing an engaged state between an arm portion and a hanger, and FIG. 9 is an explanatory view showing an embodiment of a mold for manufacturing a headphone main body.

  FIGS. 10 to 14 show a second embodiment of the present invention, FIG. 10 is a perspective view showing the overall configuration, FIG. 11 is a front view showing a hanger of the headphone body, and FIG. 12 is a headphone body. FIG. 13 is a left side view of the headphone main body, and FIG. 14 is an explanatory view showing a mold for manufacturing the headphone main body.

  FIG. 1 showing the overall configuration of the first embodiment is a perspective view of an overhead band type vertical in-the-ear type headphone. Reference numeral 30 denotes a headphone body that is attached to and held by an ear, and 50 denotes a pair of headphones. It is a headband which connects the main bodies 30 and 30 so that length adjustment is possible.

  As shown in FIGS. 1 to 5, the headphone main body 30 includes a housing 31 having a sound emitting hole opened on the back side, and a hanger 32 that is integrally formed continuously with a base portion of the housing 31. The sound emitting hole accommodates an electroacoustic transducer having an electroacoustic transducer or a diaphragm, and a protector 33 having a large number of small holes is attached to the front surface thereof. Reference numeral 34 denotes a lead wire connected to the electroacoustic transducer, and a terminal of a pair of lead wires 34 and 34 led to the outside through the side surfaces of the housings 31 and 31 is connected to a plug (not shown). Has been.

  The hanger 32 of the headphone main body 30 is formed so as to rise upward continuously from the side surface of the housing 31, and is provided with an attachment portion to which the base portion of the housing 31 is attached at one end thereof. A continuous axial hole 36 is provided from the vicinity of 31 to the insertion portion 35 formed of the opening at the upper end which is the other end. A long hole 37 extending in the axial direction and communicating with the axial hole 36 is provided on the inner surface of the hanger 32, and the width direction (axial direction and the axial direction) is formed so as to bridge between the long hole 37 and the insertion portion 35. A main claw receiving portion 38 extending in the crossing direction) is formed.

  Further, a guide edge 39, which is a rib for preventing the tip of the headband 50 from coming off, is provided on one side in the width direction of the long hole 37, and the surface facing the long hole 37 of the axial hole 36 is continuous. An uneven portion 40 and an auxiliary claw receiving portion 41 are provided. The continuous uneven part 40 is formed by continuing a large number of corrugated uneven parts on the opposite side of the guide edge 39 in the axial direction, and the auxiliary claw receiving part 41 is inserted into the continuous uneven part 40 as shown in FIG. Sawtooth-shaped concave portions are formed side by side at the end portion on the portion 35 side. Further, 42 and 43 shown in FIG. 5 and the like are punch holes provided for injection molding the headphone main body 30 with a mold, and the punch holes 42 are for forming the main claw receiving portion 38. 43 is for forming the guide edge 39.

  The headphone body 30 having such a configuration can be easily injection-molded by using, for example, a mold having a structure as shown in FIG. In FIG. 9, 45 is a cavity side mold, and 46 is a core side mold. The cavity side mold 45 is provided with a protruding portion 45 a that forms the punch hole 42 and forms the inner surface of the main claw receiving portion 38, and a protruding portion 45 b that partitions the tip of the hanger 32. The core-side mold 46 is provided with protrusions 46a and 46b that form the axial hole 36 and the long hole 37 of the hanger 32 and a recess 46c that forms the outer surface of the main claw receiving part 38. On the surface of the portion 46a, a corrugated uneven portion 47a for forming the continuous uneven portion 40 and a sawtooth convex portion 47b for forming the auxiliary claw receiving portion 41 are formed.

  The cavity side mold 45 and the core side mold 46 can be moved only in the vertical direction as indicated by arrows, and by using the two molds 45 and 46 having such a structure, the cavity side mold 45 and the core side mold 46 are related to this embodiment. The headphone body 30 can be easily manufactured. Therefore, according to the present embodiment, the side mold can be eliminated from the conventional mold shown in FIG. 19, and the mold structure can be simplified and an inexpensive mold can be used.

  In the molds 45 and 46, the description of the protrusion provided on the cavity side mold 45 for forming the guide edge 39 and the receiving part of the core side mold 46 aligned therewith are omitted.

  As shown in FIGS. 1, 2 and 6, the headband 50 has an arch shape and is configured to be elastically deformable in the inner and outer directions. Arm portions 51, 51 to be inserted into the axial holes 36 of the headphone main body 30 are provided at both longitudinal ends of the headband 50. A step portion 52 is provided at the proximal end of the arm portion 51, and the step portion 52 regulates the insertion depth of the arm portion 51 with respect to the axial hole 36 of the hanger 32.

Both ends of each arm portion 51 are divided into two forks, whereby a long arm elastic piece 53 extending in the longitudinal direction and a similarly short arm stopper piece 54 are formed side by side. An engaging convex portion 55 protruding in an arc shape is provided on the outer surface of the distal end of the elastic piece 53, and a main claw portion 56 protruding on the opposite side of the engaging convex portion 55 is provided on the inner surface of the base end. . The main claw portion 56 has a rising engagement portion 56a having a surface developed in a direction substantially orthogonal to the direction in which the arm portion 51 extends, and the height gradually decreases from the rising engagement portion 56a to the tip portion. The inclined portion is integrally formed. Further, an auxiliary claw portion 57 that protrudes in the same direction as the engaging convex portion 55 is provided on the outer surface of the tip of the stopper piece 54. The auxiliary claw portion 57 has a rising engagement portion 57a having a surface developed in a direction substantially orthogonal to the extending direction of the arm portion 51, and a height from the rising engagement portion 57a to the distal end portion of the arm portion 51. Are formed integrally with an inclined portion 57b having an inclined surface.

  Thus, as shown in FIGS. 7 and 8, when the arm portion 51 of the headband 50 is inserted into the axial hole 36 of the hanger 32, the engaging convex portion 55 becomes the continuous concave and convex portion of the hanger 32 by the spring force of the elastic piece 53. Lightly press to 40. When the arm 51 is moved in the longitudinal direction, the engaging protrusion 55 gets over the unevenness and slides in the continuous direction of the continuous unevenness 40, and reaches the vicinity of the insertion part 35, the main claw part of the elastic piece 53 56 abuts against the inner edge of the main claw receiving portion 38, thereby preventing the arm portion 51 from coming off from the hanger 32. At this time, the auxiliary claw portion 57 of the stopper piece 54 is positioned in front of the auxiliary claw receiving portion 41 of the hanger 32, and the auxiliary claw portion 57 is applied to the auxiliary claw receiving portion 41 by applying a bending force to the arm portion 51. It is in an engageable state.

  The continuous concavo-convex portion 40, the elastic piece 53, and the engaging convex portion 55 constitute a length adjustment mechanism for adjusting the length of the headband 50. The main claw portion 56 and the main claw receiving portion 38 constitute a main removal preventing mechanism for preventing the arm portion 51 from coming off, and the auxiliary claw portion 57 and the auxiliary claw receiving portion 41 constitute the arm portion 51. An auxiliary omission prevention mechanism for preventing omission is configured.

  The assembly of the headband 50 and the headphone body 30 having such a configuration can be easily performed as follows, for example. First, the tip of the arm portion 51 of the headband 50 faces the insertion portion 35 of the hanger 32 of the headphone main body 30, and the arm portion 51 is inserted into the axial hole 36 from the tip of the elastic piece 53. And the front-end | tip part of the arm part 51 is elastically deformed, and it will be in the state shown in FIG. 1 etc. by passing the main nail | claw part 56 inside the main nail | claw receiving part 38, and an assembly is completed.

  In this state, when the mounting dimensions are adjusted according to the size of the head of the user, for example, it can be easily performed as follows. That is, when the headphone body 30 is grasped with one hand and the headband 50 is grasped with the other hand and is relatively slid, the arm 51 is pulled out from the hanger 32 and the mounting dimension is decreased. When doing so, the arm part 51 is inserted into the hanger 32. Then, by stopping the sliding operation at an arbitrary position, the engagement convex portion 55 is engaged with and fixed to the concave portion of the continuous concave-convex portion 40 by the urging force of the elastic piece 53 at the stop position. The mounting dimensions can be adjusted in multiple stages. In addition, the combination of the continuous concave and convex portion 40 and the engaging convex portion 55 makes it possible to clearly sense a so-called click feeling during adjustment.

  In this case, a corrugated uneven portion is provided on the inner surface of the hanger 32 of the headphone body 30, and a rod-like elastic piece 53 is provided on the arm portion 51 of the headband 50 so that a convex portion is formed at the tip thereof. Therefore, the thickness of the entire headband 50 can be set uniformly except for the tip portion. Therefore, unlike the conventional example shown in FIG. 15 and the like, it is not necessary to change the thickness of the headband 4 for each part in order to ensure the required strength, and the thickness required for the strength is sufficient. The whole can be formed. In addition, the main claw portion 56 for preventing the slipping also slightly protrudes from the base end of the elastic piece 53 and is not formed so as to draw a semicircle as in the prior art. The thickness of the headband 50 can be set as thin as possible without increasing the thickness.

  Further, even when the headband 50 is slid and pulled out from the hanger 32 to the maximum extent, the main claw portion 56 is formed inside the engagement convex portion 55, so that the minimum length required to prevent the headband 50 from coming off. Can be made shorter than the conventional one. Therefore, assuming that the lengths of the hangers are equal, the effective stroke capable of sliding the headband 50 can be set longer than that of the conventional one.

  Further, since the bending deformation can be borne only by the headband 50, a material having higher rigidity and durability (for example, PBTP = polybutylene terephthalate, SUS = stainless steel, etc.) is used as the material of the headband 50. be able to. On the contrary, as the material of the headphone main body 30, it means that it is possible to use a material that is not high in rigidity and durability. Therefore, as a matter of course, ABS resin can be used as in the conventional case. Although it is less rigid and durable than this, it is possible to use a material that is easier to print and paint.

  Furthermore, the structure of the molds 45 and 46 as described above for manufacturing the headphone body 30 and the mold (not shown) for manufacturing the headband 50 can be simplified. It is possible to increase the productivity of headphones and to manufacture them at low cost.

  Next, as shown in FIG. 8, when the headband 50 is made the longest and the main claw portion 56 comes into contact with the edge of the main claw receiving portion 38 to prevent it from coming off, a moment in the clockwise direction acts on the arm portion 51. As a result, the base portion of the elastic piece 53 is largely bent downward by a gap provided on the engagement convex portion 55 side in order to apply a spring force to the elastic piece 53, and the main claw portion 56 is detached from the main claw receiving portion 38. It will be. However, in this case, an auxiliary claw portion 57 is provided on the opposite side of the main claw portion 56 of the arm portion 51, and the auxiliary claw portion 57 is similarly bent downward and engaged with the auxiliary claw receiving portion 41. Will do. That is, since the wedge-shaped portion formed by the rising engagement portion 57a and the inclined surface 57b of the auxiliary claw portion 57 is engaged with the auxiliary claw receiving portion 41, the hanger 32 is prevented from falling off from the headband 50. The

  Therefore, according to this embodiment, when the headband 50 is pulled out from the headphone main body 30, the engagement between the main claw portion 56 and the main claw receiving portion 38 or the auxiliary claw portion 57 and the auxiliary claw Since at least one of the engagements with the receiving portion 41 is always ensured, it is possible to reliably prevent the headband 50 from coming out of the headphone main body 30.

  In addition, the second embodiment of the present invention shown in FIGS. 10 to 13 eliminates the holes 42 and 43 of the headphone body 30 shown in the first embodiment, reduces the surface irregularities, and refreshes the appearance. Thus, the design value of the headphone body 60 is increased. The configuration of the headphone main body 60 is the same as that of the above embodiment except that the punched holes 42 and 43 and the auxiliary claw receiving portion 41 are eliminated.

  Although the auxiliary claw receiving portion 41 is abolished in series with the punched holes 42 and 43, this is unavoidable due to the structure of the mold. Therefore, in the second embodiment, the auxiliary claw portion 57 of the headband 50 that forms a pair with the auxiliary claw receiving portion 41 is also unnecessary, and the removal preventing mechanism has only one set of the main claw portion 56 and the main claw receiving portion 38. Become.

  The headphone main body 60 having such a configuration can be manufactured using, for example, a mold having a configuration as shown in FIG. This mold is composed of a cavity side mold 65, a core side mold 66 and a side mold 67.

  The cavity-side mold 65 is provided with only the surface that forms the upper surface of the headphone main body 60, and the protruding portion 45a that forms the punch hole 42 and the like, and the protruding portion 45b that partitions the tip of the hanger 32 are eliminated. Further, the core-side mold 66 is provided with only the protruding portion 66a that forms the axial hole 36 and the long hole 37 of the hanger 32, and the protruding portion 46b that forms the insertion portion 35 is eliminated. And the convex part 68 for forming the insertion part 35 grade | etc., Is provided in the side metal mold | die 67. FIG.

  The cavity side mold 65 and the core side mold 66 can be moved only in the vertical direction as indicated by the arrows, and the side mold 67 is movable in the left and right direction. By using the three molds 65, 66, and 67 having such a structure, the headphone main body 60 according to the present embodiment can be easily manufactured. Therefore, according to the present embodiment, the cavity side mold 65 and the core side mold 66 can be made simpler than those of the first embodiment shown in FIG. 9, but a side mold is required. Therefore, the mold structure is slightly more complicated than that of the first embodiment.

  Thus, according to the second embodiment, as shown in FIG. 13, the outer surface of the hanger 32 has no holes such as the punch holes 42, and the headphone main body 60 with a clean external shape can be obtained.

  As described above, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, an example in which the present invention is applied to a vertical in-the-ear type headphone has been described, but the headphone main body and the headband are provided. Of course, the present invention can be applied to other types of headphones. Further, the stereo type headphones in which the headphone bodies 30, 30 (or 60, 60) are provided on both sides of the headband 50 have been described. For example, one headphone body 30 (or 60) is a dummy or The headphone body can be abolished to make it a single type headphone.

  Moreover, in the said Example, although the example which provided the continuous uneven | corrugated part 40 in the surface facing the long hole 37 of the axial direction hole 36 was demonstrated, the continuous uneven | corrugated part is formed in the side surface adjacent to both the said surface and the long hole 37. 40 may be provided. As described above, the present invention can be variously modified without departing from the spirit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an overall configuration of a first embodiment of the present invention. FIG. 2 is a front view of a part of the usage state of FIG. 1. 1 is a front view showing a cross section of a hanger of a headphone main body according to a first embodiment of the present invention. FIG. 4 is a right side view of the headphone main body shown in FIG. 3. FIG. 4 is a left side view of the headphone main body shown in FIG. 3. It is a front view which shows the arm part of the headband of 1st Example of this invention. 1A and 1B show a first embodiment of the present invention, in which FIG. A is a perspective view showing an arm portion of a headband, and FIG. It is sectional drawing which shows the engagement state of the arm part and hanger of 1st Example of this invention. It is explanatory drawing which shows the Example of the metal mold | die for manufacturing the headphone main body of 1st Example of this invention. The 2nd Example of the present invention is shown and it is a perspective view showing the whole composition. It is a front view which shows the hanger of the headphone main body of 2nd Example of this invention in cross section. FIG. 12 is a right side view of the headphone main body shown in FIG. 11. FIG. 12 is a left side view of the headphone main body shown in FIG. 11. It is explanatory drawing which shows the Example of the metal mold | die for manufacturing the headphone main body of 2nd Example of this invention. It is explanatory drawing which shows the use condition of the conventional headphones. It is a front view which shows the connection part of the arm part and hanger of the conventional headphones in cross section. It is a right view of FIG. FIG. 17 is a left side view of FIG. 16. It is explanatory drawing which shows the example of the metal mold | die for manufacturing the conventional headphone main body.

Explanation of symbols

  30, 60 Headphone body, 31 Housing, 32 Hanger, 35 Insertion part (opening), 36 Axial hole, 37 Long hole, 38 Main claw receiving part, 39 Guide edge (rib), 40 Continuous uneven part, 41 Auxiliary claw receiving Part, 42, 43 punching hole, 45, 65 cavity side mold, 46, 66 core side mold, 50 headband, 51 arm part, 53 elastic piece, 54 stopper piece, 55 engaging convex part, 56 main claw part 57 Auxiliary claw part, 57a Standing locking part, 57b Inclined part, 67 Side mold

Claims (1)

In a headphone that is slidably attached to a hanger provided with an electroacoustic converter on the headband,
The hanger is formed in a concave shape with a synthetic resin, and a plurality of concave and convex portions are continuously provided in the concave shape along the sliding direction, and an attachment portion for the electroacoustic conversion portion is provided at one end of the hanger and the An insertion portion into which the arm portion of the headband is inserted is formed at the other end portion corresponding to the one end portion, and a main claw receiving portion that bridges the concave side walls at the concave upper portion is formed in the insertion portion. the Rutotomoni provided integrally, has a bottom drilled vent holes at the position of the concave facing the main claw receiving portion, of the hanger, one side wall of the side wall portions the concave at the top of the concave cross section A rib projecting in the direction of the other side wall in the unit,
The headband is formed of a synthetic resin, is extended from the arm portion of the headband, and is provided with an elastic piece that is thinner than the headband. Engagement protrusions for touching and providing a click feeling are provided integrally, and the headband arm portion and the base portion of the elastic piece are provided in the vicinity of the rising engagement portion, and from the rising engagement portion to the tip portion. the main height the main pawl portion formed integrally with progressively smaller inclined portions provided, the arm portion of the headband when the slide for insertion to a length adjusted to the insertion portion of the hanger toward A headphone characterized in that a claw portion is locked to the main claw receiving portion to prevent the hanger from falling off from the headband.

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