JP2022019351A - Audio device and connection housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio device which can be easily manufactured.
A neck speaker (1) is arranged through a connection housing (4) having a hollow hole (7) penetrating from one end (5) to the other end (6) and a hollow hole (7). The hollow hole (7) has a small diameter portion (8) and a large diameter portion (9) whose radial dimension is larger than that of the small diameter portion (8).
[Selection diagram] Fig. 1

Description

In the present invention, a first housing having a first speaker, a second housing having a second speaker, and a connection housing in which one end is connected to the first housing and the other end is connected to the second housing. The present invention relates to an audio device including the above, and a connection housing used therein.

A negative pressure treatment device having an open pore contact element capable of generating negative pressure and / or suction force in a body cavity is known as a prior art (Patent Document 1). In this negative pressure treatment device, the fluid storage segment and the fluid connecting element are transferred to each other without a step, and a guide wire is introduced to both elements through a passage. This passage is a negative pressure treatment device in which the fluid storage segment and the fluid are guidedly coupled.

Japanese Unexamined Patent Publication No. 2019-58714 (published on April 18, 2019)

However, the first housing having the first speaker, the second housing having the second speaker, one end is connected to the first housing, the other end is connected to the second housing, and one end to the other end. It is provided with a connection housing having a hollow hole penetrating toward the first housing and a wire harness arranged so as to reach the second housing through the hollow hole from the first housing and related to the first and second speakers. In the neck speaker, the connection housing has a curved shape so that it can be hung on the user's neck. Therefore, the hollow hole also has a circular orbit shape instead of a linear shape as in Patent Document 1.

Therefore, in order to arrange the wire harness from the first housing through the hollow hole to reach the second housing, a manufacturing operation is required in which the wire harness is inserted while the tip of the wire harness is in contact with the side wall of the hollow hole.

It is preferable to use two molds for molding the hollow holes of the connection housing for the following reasons. First, when molding with one mold, the stroke for removing the mold from the connected housing after molding is twice as long as when molding with two molds and pulling out to the left and right, which is twice as long. It becomes necessary to move the mold by the distance. Therefore, the risk of the mold breaking increases, which is inconvenient in manufacturing.

Further, in order to pull out the mold, it is necessary to form a taper in the mold in the pulling direction. When a taper is formed, the radial dimension of the hollow hole becomes thinner at the position corresponding to the tip of the mold and becomes thicker at the position corresponding to the base of the mold. Then, the difference in the radial dimensions of the hollow holes is doubled as in the case of molding with two molds.

As described above, it is preferable to mold the hollow hole of the connection housing using two molds.

However, in the mold fitting portion between the two molds, a step may be generated on the inner wall of the hollow hole due to the misalignment of the cores of both molds. In this case, there arises a manufacturing problem that the tip of the inserted wire harness collides with the step and is caught, and the inserted wire harness cannot pass through the hollow hole.

One aspect of the present invention is to realize an audio device and a connection housing that can be easily manufactured.

In order to solve the above problems, the audio device according to one aspect of the present invention has a first housing having a first speaker, a second housing having a second speaker, and one end thereof in the first housing. A connection housing that is connected and the other end is connected to the second housing and has a hollow hole penetrating from the one end toward the other end, and the first housing through the hollow hole. The wiring is provided so as to reach the two housings and is related to the first and second speakers, and the hollow hole is continuous with the small diameter portion formed on one end side and the small diameter portion. It is characterized by having a large-diameter portion formed on the other end side and having a radial dimension larger than that of the small-diameter portion.

In order to solve the above problems, the connection housing according to one aspect of the present invention has one end formed so as to be connectable to the first housing having the first speaker, and is connected to the second housing having the second speaker. It is a connection housing in which the other end is formed so as to be possible, and has a hollow hole penetrating from the one end toward the other end, and the hollow hole has a small diameter portion formed on the one end side and the small diameter portion. It is characterized by having a large diameter portion continuously formed on the other end side of the portion and having a radial dimension larger than that of the small diameter portion.

According to one aspect of the present invention, an audio device and a connection housing can be easily manufactured.

It is a top view which shows the structure of the neck speaker which concerns on embodiment. It is a perspective view which shows the structure of the neck speaker. It is sectional drawing of the main part of the connection housing provided in the neck speaker. It is a figure for demonstrating the wire harness inserted into the hollow hole formed in the said connection housing. It is a figure which shows the wire harness inserted in the said hollow hole. It is sectional drawing of the main part of the connection housing provided in the neck speaker which concerns on a comparative example. It is a perspective view which shows one end side of the connection housing which concerns on embodiment. It is a perspective view for demonstrating the relationship between the main body member and the cover member of the 1st housing provided in the neck speaker. It is another perspective view for demonstrating the relationship between the main body member and the cover member. It is a perspective view which shows the protrusion formed on the said main body member. It is another perspective view which shows the said protrusion. It is a perspective view which shows the boss part and the blade part formed in the cover member. It is a perspective view for demonstrating the relationship between the partial cylinder part of the protrusion part and a wire harness. It is a perspective view for demonstrating the fitting state of the through hole of the protrusion plate part formed on one end side of the connection housing, and the protrusion part. It is another perspective view for demonstrating the said fitting state. It is a perspective view which shows the state which the said connection housing is connected to the said 1st housing. It is a perspective view which shows the screw attached for screwing with the fastening hole formed in the boss part. It is a perspective view for demonstrating the screw screwing with the screw hole formed in the boss part. It is a perspective view for demonstrating the structure which sandwiches the projecting plate portion by the end surface of the blade portion and the main body member. It is sectional drawing for demonstrating the structure which sandwiches the protrusion plate part by the end surface of the blade part, and the main body member. FIG. 20 is a detailed cross-sectional view of a main part of FIG.

Hereinafter, one embodiment of the present invention will be described in detail.

(Configuration of neck speaker 1)
FIG. 1 is a top view showing the configuration of the neck speaker 1 (audio equipment) according to the embodiment. FIG. 2 is a perspective view showing the configuration of the neck speaker 1. FIG. 3 is a cross-sectional view of the connection housing 4 provided in the neck speaker 1. FIG. 4 is a diagram for explaining a wire harness 18 (wiring) inserted into the hollow hole 7 formed in the connection housing 4. FIG. 5 is a diagram showing a wire harness 18 inserted into the hollow hole 7.

In the neck speaker 1, the first housing 2 having the first speaker 19, the second housing 3 having the second speaker 20, one end 5 is connected to the first housing 2, and the other end 6 is the second housing. It includes a connection housing 4 connected to the body 3. The connection housing 4 has a curved shape so that it can be hung on the user's neck, and has a hollow hole 7 penetrating from one end 5 toward the other end 6. The connection housing 4 is made of a thermoplastic resin such as an elastomer.

The wire harness 18 is arranged so as to reach the second housing 3 from the first housing 2 through the hollow hole 7. The wire harness 18 is configured by bundling a plurality of electric wires related to the first speaker 19 and the second speaker 20.

The first housing 2 has a main body member 12 for accommodating the first speaker 19, and a cover member 13 for covering the main body member 12. The second housing 3 has a main body member 12 for accommodating the second speaker 20, and a cover member 13 for covering the main body member 12.

(Structure of hollow hole 7 of connection housing 4)
The hollow hole 7 has a small diameter portion 8 formed on one end 5 side and a large diameter portion 9 formed continuously on the small diameter portion 8 on the other end 6 side and having a larger radial dimension than the small diameter portion 8. .. The diameter of the small diameter portion 8 is, for example, about 4 mm, and the diameter of the large diameter portion 9 is, for example, about 4.4 mm to 4.6 mm.

Since the two PIN slide dies for molding the hollow hole 7 go out to the left and right along the circular orbit, the hole diameter of the hollow hole 7 is the smallest in the center of the connection housing 4, and faces left and right. The more you go, the larger the hole diameter gradually becomes.

When the wire harness 18 is inserted into the hollow hole 7 formed in the connection housing 4 in order to manufacture the neck speaker 1 configured in this way, the wire harness 18 is moved from one end 5 side to the other end 6 side of the connection housing 4. Insert the wire harness 18 toward it. The wire harness 18 inserted from one end 5 side of the connection housing 4 first passes through the small diameter portion 8 of the hollow hole 7, and then passes through the large diameter portion 9 having a larger radial dimension than the small diameter portion 8. It reaches the other end 6 side. Since the radial dimension of the large diameter portion 9 is larger than that of the small diameter portion 8, the tip of the wire harness 18 inserted in the hollow hole 7 collides with a step on the inner wall of the hollow hole 7 and is caught, and the inserted wire harness 18 is inserted. The problem that the wire cannot pass through the hollow hole 7 is solved.

FIG. 6 is a cross-sectional view of the connection housing 94 provided in the neck speaker according to the comparative example. When a step 98 is generated on the inner wall of the hollow hole 97 due to the misalignment of the cores of both molds in the mold matching portion between the two molds, the tip of the inserted wire harness 88 collides with the step 98 and is caught. Therefore, there arises a problem that the inserted wire harness 88 cannot pass through the hollow hole 97.

(Structure on one end 5 side of connection housing 4)
FIG. 7 is a perspective view showing one end 5 side of the connection housing 4. The connection housing 4 has a protruding plate portion 10 protruding from one end 5 for connecting to the first housing 2. The protruding plate portion 10 is integrally formed of the same material as the connecting housing 4, and is adjacent to a hollow hole 7 that opens to one end 5 from the inner region of one end 5 of the connecting housing 4 that is formed to be curved. Protruding. Therefore, the hollow hole 7 opens in the outer region of one end 5 of the connecting housing 4 formed in a curved shape. An opening of the hollow hole 7 is formed in the vicinity of the base portion of the projecting plate portion 10.

The protruding plate portion 10 has a through hole 11 penetrating in a direction intersecting the longitudinal direction of the hollow hole 7.

In this way, a notch formed by the projecting plate portion 10 and the one end 5 is formed on the one end 5 side of the connection housing 4.

The other end 6 side of the connection housing 4 is also configured in the same manner as the one end 5 side.

(Structure of 1st housing 2)
FIG. 8 is a perspective view for explaining the relationship between the main body member 12 and the cover member 13 of the first housing 2. FIG. 9 is another perspective view for explaining the relationship between the main body member 12 and the cover member 13.

The first housing 2 has a shape curved in the same direction as the connecting housing 4 so as to be mounted on the user, and has a substantially U-shaped cross section, and the main body member 12 is curved in the same direction as the main body member 12. It has a cover member 13 having a shape and covering the main body member 12.

The second housing 3 is also configured in the same manner as the first housing 2.

FIG. 10 is a perspective view showing a protrusion 14 formed on the main body member 12 of the first housing 2. FIG. 11 is another perspective view showing the protrusion 14.

The main body member 12 has a protruding portion 14 projecting from the bottom surface of the main body member 12 so as to fit into the through hole 11 of the protruding plate portion 10. The protrusion 14 includes a cylindrical portion 15 that fits into the through hole 11 and a partial cylindrical portion 16 that protrudes from a part of the cylindrical portion 15 in the circumferential direction so as to retract the wire harness 18 passing through the hollow hole 7. ..

Inside the cylindrical portion 15, a screw 24 (FIG. 13, FIG. 15, FIG. 17, FIG. 18) for fastening the main body member 12 and the cover member 13 so as to sandwich the projecting plate portion 10 between the main body member 12 and the cover member 13 , And a fastening hole 17 for inserting FIG. 20) is provided.

FIG. 12 is a perspective view showing a boss portion 21 and a blade portion 22 formed on the cover member 13. The cover member 13 includes a columnar boss portion 21 projecting toward the protrusion 14 of the main body member 12, and two blade portions 22 formed on the outer peripheral surface of the boss portion 21 along the longitudinal direction of the boss portion 21. And include. The two blade portions 22 are formed at positions that do not interfere with the partial cylindrical portion 16 of the protrusion portion 14. The boss portion 21 includes a screw hole 23 formed so as to face the protrusion portion 14.

The second housing 3 is also configured in the same manner as the first housing 2.

(Connection configuration between the connection housing 4 and the first housing 2)
FIG. 13 is a perspective view for explaining the relationship between the partially cylindrical portion 16 of the protrusion 14 and the wire harness 18. FIG. 14 is a perspective view for explaining a fitted state between the through hole 11 and the protrusion 14 of the protrusion 10 formed on one end 5 side of the connection housing 4. FIG. 15 is another perspective view for explaining the fitting state.

The partially cylindrical portion 16 of the protrusion 14 retracts the wire harness 18 that has passed through the hollow hole 7 of the connection housing 4 from the fastening hole 17 of the protrusion 14 by its outer peripheral surface, and is connected to the inner wall of the main body member 12. Insert it in between and fix it.

As a result, the wire harness 18 is prevented from biting into the boss portion 21 of the cover member 13.

Instead of the partial cylindrical portion 16, it may be configured to protrude from the entire circumference of the cylindrical portion 15. However, if the cylindrical portion 15 is a partially cylindrical portion that protrudes from a part in the circumferential direction, when the cover member 13 is put on the main body member 12 at the time of manufacturing, the cover member 13 may be lowered diagonally even if it is not lowered straight. However, the cover member 13 and the main body member 12 can be assembled. Further, when the cover member 13 is put on the main body member 12 from above and assembled, the inside of the cover member 13 and the inside of the main body member 12 cannot be seen from the outside at all. Manufacture of the speaker 1 becomes easy.

The cylindrical portion 15 of the protrusion 14 is fitted into the through hole 11 of the protrusion 10, and the partial cylindrical portion 16 of the protrusion 14 protrudes from the through hole 11 of the protrusion 10.

The projecting plate portion 10 is formed inside one end 5 of the connection housing 4 (the neck side of the user when the user wears it). When the neck speaker 1 is hung on the neck, the left and right first housings 2 and the second housing 3 are slightly spread outward to put the neck speaker 1 in the neck. In this case, if the projecting plate portion 10 is arranged on the outside of one end 5, a gap is likely to occur between the connection housing 4 and the main body member 12 of the first housing 2, and hair may be caught there. .. When the projecting plate portion 10 is arranged on the neck side, even if the first housing 2 and the second housing 3 are spread outward, the connection housing 4, the first housing 2, and the second housing 3 can be connected to each other. It is difficult for gaps to occur between them.

FIG. 16 is a perspective view showing a state in which the connection housing 4 is connected to the first housing 2. FIG. 17 is a perspective view showing a screw 24 attached for screwing with the screw hole 23 formed in the boss portion 21. FIG. 18 is a perspective view for explaining a screw 24 screwed with a screw hole 23 formed in the boss portion 21. FIG. 19 is a perspective view for explaining a configuration in which the projecting plate portion 10 is sandwiched between the end surface 26 of the blade portion 22 and the main body member 12. FIG. 20 is a cross-sectional view for explaining a configuration in which the projecting plate portion 10 is sandwiched between the end surface 26 of the blade portion 22 and the main body member 12. FIG. 21 is a detailed cross-sectional view of a main part of FIG.

A fastening hole 17 is formed inside the cylindrical portion 15 of the protrusion 14. As shown in FIGS. 16 to 18, 20 and 21, the fastening hole 17 opens on the surface of the bottom surface of the main body member 12 of the first housing 2 opposite to the protrusion 14. As shown in FIG. 17, the screw 24 adsorbed on the driver 25 is inserted through the opening of the fastening hole portion 17. Then, as shown in FIGS. 20 and 21, the screw 24 is screwed into the screw hole 23 formed in the boss portion 21 of the cover member 13 by the rotation of the driver 25, and the screw 24 is screwed into the fastening hole portion 17. The fastening hole portion 17 is closed while in contact with the formed seat surface 27. The end surface of the boss portion 21 comes into contact with the end surface of the fastening hole portion 17 inside the cylindrical portion 15 opposite to the seat surface 27. This prevents the seat surface 27 from being depressed when the screw 24 is screwed.

In this way, the protruding plate portion 10 of the connecting housing 4 is sandwiched between the end surface 26 of the blade portion 22 of the cover member 13 of the first housing 2 and the bottom surface portion of the main body member 12. As a result, the connection housing 4 and the first housing 2 are connected.

The screw 24 can be screwed from the fastening hole 17 inside the main body member 12 of the first housing 2 (on the neck side of the user when the user wears it) to the screw hole 23 of the boss portion 21 of the cover member 13. Therefore, the screw 24 can be made inconspicuous in terms of design.

The wire harness 18 according to the embodiment has a structure through which the hollow hole 7 formed in the connection housing 4 is passed, but the conventional wire harness according to the comparative example is integrally molded with the connection housing, and therefore, It was fixed so that it would not move with respect to the connection housing. Then, at both ends of the connection housing, projecting members made of ABS resin and protruding from both ends of the connection housing were molded by two-color molding with the connection housing while inserting the wire harness into the connection housing.

The structure of the wire harness, the connecting housing, and the protruding member of such a comparative example has a problem that the durability against bending operation is extremely weak because the wire harness is completely fixed to the connecting housing and the protruding member. rice field.

On the other hand, the structure of the wire harness 18 and the connection housing 4 according to the embodiment is such that the wire harness 18 passes through the hollow hole 7 formed in the connection housing 4. Therefore, the wire harness 18 can move without being fixed, and the durability against bending motion can be improved.

Further, the projecting plate portion 10 of the embodiment corresponding to the projecting member of the comparative example is integrally molded with the same material as the connecting housing 4. Therefore, the manufacturing process can be shortened as compared with the comparative example in which the connection housing and the projecting member are molded in two colors.

In the above-described embodiment, the neck speaker 1 has been described as an example of an audio device, but the present invention is not limited thereto. For example, the present invention can be applied to headphones worn on the user's head.

(Other aspects of the present invention)
The present invention can also be expressed as follows.

(1) The first housing having the first speaker, the second housing having the second speaker, one end is connected to the first housing, and the other end is connected to the second housing. A connection housing having a hollow hole penetrating from one end toward the other end, and the first and the first housing arranged so as to reach the second housing from the first housing through the hollow hole. The connection housing includes wiring related to the two speakers, the connection housing has a protruding plate portion protruding from one end for connecting to the first housing, and the protruding plate portion is in the longitudinal direction of the hollow hole. An audio device having a through hole penetrating in a direction intersecting with the speaker, and the first housing having a protrusion that fits into the through hole.

According to the above configuration, the connection housing through which the wiring passes through the hollow hole penetrating from one end to the other end can be easily connected to the first housing.

(2) A part of the cylindrical portion in the circumferential direction so that the projection portion holds the wiring passing through the hollow hole between the cylindrical portion fitted in the through hole and the inner wall of the first housing. The audio device according to (1), which includes a partial cylindrical portion protruding from the surface.

According to the above configuration, the wiring passing through the hollow hole can be sandwiched between the outer circumference of the partial cylindrical portion and the inner wall of the first housing and gently held.

(3) The first housing includes a main body member on which the protrusion is formed and a cover member that covers the main body member, and the cover member has a boss portion that protrudes toward the protrusion and the boss portion. The outer peripheral surface of the boss portion includes a plurality of blade portions formed along the longitudinal direction of the boss portion, and the boss portion includes a screw hole formed so as to face the protrusion portion, and the audio device. Further includes a fastening member that is screwed into the screw hole in order to sandwich the protruding plate portion between the end surface of the blade portion on the longitudinal side of the boss portion and the main body member, and the cylindrical portion is the fastening. The audio device according to (2), which has a fastening hole for inserting a member.

According to the above configuration, the first housing can be firmly connected to the connecting housing by sandwiching the protruding plate portion between the end face of the blade portion and the main body member.

(4) The hollow hole has a small diameter portion formed on one end side and a large diameter portion continuously formed on the other end side of the small diameter portion and having a larger radial dimension than the small diameter portion. The audio equipment according to (1) having.

According to the above configuration, the wiring inserted from the small diameter portion to the large diameter portion does not collide with the step on the inner wall of the hollow hole and is not caught. Therefore, the audio equipment can be easily manufactured.

(5) The audio device according to (1), wherein the connection housing has a curved shape so that it can be hung on the user's neck.

According to the above configuration, it is possible to provide an audio device suitable as a neck speaker.

(6) The audio device according to (1), wherein the wiring includes a wire harness in which a plurality of electric wires are bundled.

According to the above configuration, a plurality of electric wires related to the first and second speakers can be arranged so as to reach the second housing from the first housing through the hollow holes.

(7) The audio device according to (1), wherein the longitudinal dimension of the small diameter portion and the longitudinal dimension of the large diameter portion are half of the longitudinal dimension of the hollow hole.

According to the above configuration, the stroke for pulling out the two molds for forming the hollow hole of the connection housing is shortened to reduce the risk of the mold breaking, and the taper dimension for pulling out the mold. Can be made smaller.

(8) The audio device according to (1), wherein the audio device is a neck speaker.

According to the above configuration, the neck speaker can be easily manufactured.

〔summary〕
The audio device (neck speaker 1) according to the first aspect of the present invention includes a first housing 2 having a first speaker 19, a second housing 3 having a second speaker 20, and one end 5 of the first housing. A connection housing 4 having a hollow hole 7 connected to 2 and having the other end 6 connected to the second housing 3 and penetrating from the one end 5 toward the other end 6, and the first housing 2 The hollow hole 7 is provided with wiring (wire harness 18) related to the first and second speakers 19 and 20 arranged so as to reach the second housing 3 from the hollow hole 7. However, the small diameter portion 8 formed on the one end 5 side and the large diameter portion 9 formed on the other end 6 side continuously with the small diameter portion 8 and having a larger radial dimension than the small diameter portion 8 are provided. Have.

According to the above configuration, in the manufacturing process of the audio device, the wiring is inserted into the small diameter portion of the hollow hole from one end side of the connection housing. Then, the wiring is further inserted toward the other end side while applying the tip to the side wall of the small diameter portion of the hollow hole. Next, the wiring reaches the large diameter portion from the small diameter portion of the hollow hole. After that, the wiring is further inserted while touching the side wall of the large diameter portion of the hollow hole with the tip thereof, and reaches the other end of the connection housing. Since the radial dimension of the large diameter portion of the hollow hole is larger than the radial dimension of the small diameter portion, the wiring inserted from the small diameter portion toward the large diameter portion collides with the step on the inner wall of the hollow hole and is caught. There is no such thing. As a result, audio equipment can be easily manufactured.

In the audio device (neck speaker 1) according to the second aspect of the present invention, in the first aspect, the connecting housing 4 has a protruding plate portion 10 protruding from one end 5 in order to connect to the first housing 2. The protruding plate portion 10 has a through hole 11 penetrating in a direction intersecting the longitudinal direction of the hollow hole 7, and the first housing 2 has a protruding portion 14 that fits into the through hole 11. It is preferable to have.

According to the above configuration, the first housing can be connected to the connecting housing by fitting the protrusion into the through hole.

In the audio device (neck speaker 1) according to the third aspect of the present invention, in the second aspect, the wiring (wire) through the cylindrical portion 15 in which the protrusion 14 fits into the through hole 11 and the hollow hole 7. It is preferable to include a partial cylindrical portion 16 projecting from a part of the cylindrical portion 15 in the circumferential direction so as to hold the harness 18) with the inner wall of the first housing.

According to the above configuration, the wiring passing through the hollow hole can be sandwiched between the outer circumference of the partial cylindrical portion and the inner wall of the first housing and gently held.

In the audio device (neck speaker 1) according to the fourth aspect of the present invention, in the third aspect, the first housing 2 is a cover member that covers the main body member 12 on which the protrusion 14 is formed and the main body member 12. One or a plurality of boss portions 21 having the cover member 13 projecting toward the protrusions 14 and one or a plurality of boss portions 21 formed on the outer peripheral surface of the boss portions 21 along the longitudinal direction of the boss portions 21. The boss portion 21 includes a blade portion 22, and the boss portion 21 includes a screw hole 23 formed so as to face the protrusion portion 14, and the audio device (neck speaker 1) includes the boss portion 21 of the blade portion 22. A fastening member (screw 24) to be screwed into the screw hole 23 in order to sandwich the protruding plate portion 10 by the end surface 26 on the longitudinal side of the above is further provided, and the cylindrical portion 15 is the fastening. It is preferable to have a fastening hole portion 17 for inserting the member (screw 24).

According to the above configuration, the first housing can be firmly connected to the connecting housing by sandwiching the protruding plate portion between the end face of the blade portion and the main body member.

The audio device (neck speaker 1) according to the fifth aspect of the present invention preferably has a curved shape so that the connection housing 4 can be hung on the user's neck in the first aspect.

According to the above configuration, it is possible to provide an audio device suitable as a neck speaker.

In the audio device (neck speaker 1) according to the sixth aspect of the present invention, it is preferable that the wiring (wire harness 18) includes a wire harness in which a plurality of electric wires are bundled in the first aspect.

According to the above configuration, a plurality of electric wires related to the first and second speakers can be arranged so as to reach the second housing from the first housing through the hollow holes.

In the audio device (neck speaker 1) according to the seventh aspect of the present invention, in the first aspect, the longitudinal dimension of the small diameter portion 8 and the longitudinal dimension of the large diameter portion 9 are the longitudinal dimensions of the hollow hole 7. It is preferably one half of the dimension in the direction.

According to the above configuration, the stroke for pulling out the two molds for forming the hollow hole of the connection housing is shortened to reduce the risk of the mold breaking, and the taper dimension for pulling out the mold. Can be made smaller.

In the audio device (neck speaker 1) according to the eighth aspect of the present invention, it is preferable that the audio device (neck speaker 1) is a neck speaker in the first aspect.

According to the above configuration, the neck speaker can be easily manufactured.

The connection housing 4 according to the ninth aspect of the present invention has one end 5 formed so as to be connectable to the first housing 2 having the first speaker 19, and can be connected to the second housing 3 having the second speaker 20. A connection housing 4 having an end 6 formed thereof, having a hollow hole 7 penetrating from the one end 5 toward the other end 6, and the hollow hole 7 having a small diameter portion formed on the one end 5 side. It has a large diameter portion 9 which is continuously formed on the other end 6 side of the small diameter portion 8 and whose radial dimension is larger than that of the small diameter portion 8.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Further, by combining the technical means disclosed in each embodiment, new technical features can be formed.

1 Neck speaker (audio equipment)
2 1st housing 3 2nd housing 4 Connection housing 5 One end 6 Other end 7 Hollow hole 8 Small diameter part 9 Large diameter part 10 Protruding plate part 11 Through hole 12 Main body member 13 Cover member 14 Protruding part 15 Cylindrical part 16 part Cylindrical part 17 Fastening hole part 18 Wire harness (wiring)
19 1st speaker 20 2nd speaker 21 Boss part 22 Blade part 23 Screw hole 24 Screw (fastening member)
26 End face 27 Seat face

Claims (9)

The first housing having the first speaker and
A second housing with a second speaker and
A connection housing having a hollow hole having one end connected to the first housing and the other end connected to the second housing and penetrating from the one end toward the other end.
It is provided with wiring related to the first and second speakers arranged so as to reach the second housing from the first housing through the hollow hole.
The hollow hole has a small diameter portion formed on one end side and a large diameter portion continuously formed on the other end side of the small diameter portion and having a radial dimension larger than that of the small diameter portion. Characteristic audio equipment. The connection housing has a protruding plate portion protruding from one end for connecting to the first housing.
The protruding plate portion has a through hole penetrating in a direction intersecting the longitudinal direction of the hollow hole.
The audio device according to claim 1, wherein the first housing has a protrusion that fits into the through hole. The protrusion protrudes from a part of the cylindrical portion in the circumferential direction so as to hold the wiring passing through the hollow hole between the cylindrical portion fitted in the through hole and the inner wall of the first housing. The audio device according to claim 2, which includes a partially cylindrical portion. The first housing includes a main body member on which the protrusion is formed and a cover member that covers the main body member.
The cover member includes a boss portion that protrudes toward the protrusion portion, and one or a plurality of blade portions formed on the outer peripheral surface of the boss portion along the longitudinal direction of the boss portion.
The boss portion includes a screw hole formed so as to face the protrusion portion.
The audio device further includes a fastening member that is screwed into the screw hole in order to sandwich the projecting plate portion between the end face of the blade portion on the longitudinal direction side of the boss portion and the main body member.
The audio device according to claim 3, wherein the cylindrical portion has a fastening hole portion for inserting the fastening member. The audio device according to any one of claims 1 to 4, wherein the connection housing has a curved shape so that it can be hung on the user's neck. The audio device according to any one of claims 1 to 5, wherein the wiring includes a wire harness in which a plurality of electric wires are bundled. The acoustic according to any one of claims 1 to 6, wherein the longitudinal dimension of the small diameter portion and the longitudinal dimension of the large diameter portion are half of the longitudinal dimension of the hollow hole. machine. The audio device according to any one of claims 1 to 7, wherein the audio device is a neck speaker. A connection housing in which one end is formed so as to be connectable to the first housing having the first speaker and the other end is formed so as to be connectable to the second housing having the second speaker.
It has a hollow hole that penetrates from one end to the other end.
The hollow hole has a small diameter portion formed on one end side and a large diameter portion continuously formed on the other end side of the small diameter portion and having a radial dimension larger than that of the small diameter portion. Characterized connection housing.

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