KR100490030B1 - Coaxial speaker - Google Patents

Abstract

Disclosed is a coaxial speaker that improves the structure of a connection portion connecting a woofer and a tweeter coaxially. The coaxial speaker is supported by the rotating member by the insertion protrusion and the insertion groove, and the vertical movement member is firmly coupled to the rotating member by bolts, washers and nuts, so that the rotating member and the vertical movement member are rotated or sawed by a small impact. Do not exercise as. That is, since the position of the tweeter mounted on the vertical motion member is not changed by a small impact, the directivity of the tweeter is improved. In addition, since the rotating member does not rotate more than 360 ° in the forward and reverse directions, the twisting of the wire connecting the woofer and the tweeter through the rotating member is prevented.

Description

Coaxial speaker {COAXIAL SPEAKER}

The present invention relates to a coaxial speaker having an improved structure of a connecting portion for coaxially connecting a woofer and a tweeter.

1 is a cross-sectional view showing a schematic configuration of a conventional coaxial speaker, which will be described.

As shown, the coaxial speaker 10 is configured to coaxially connect a woofer 20 for generating low sound, a tweeter 30 for generating high sound, and a woofer 20 and a tweeter 30. The connection part 40 is provided. The connecting portion 40 has a support member 41 and a swivel 43 installed to be rotatable and pivotal in the form of a pivot. In detail, the lower end side of the supporting member 41 is press-fitted into the woofer 20, and a circular groove is formed inside the upper end side. The lower end side of the swivel 43 is formed in a circular shape with elasticity and is rotatably coupled to the groove of the support member 41 in a pivotal form, and the tweeter 30 is installed at the upper end side. Thus, after the coaxial speaker 10 is installed in a vehicle or the like, the tweeter 30 is pivoted and pivoted in a pivoted form so that the tweeter 30 faces the proper direction. Reference numeral 50 is a wire connecting the woofer 20 and the tweeter 30.

However, the conventional coaxial speaker as described above has a weak coupling force because the support member 41 and the swivel 43 are coupled to each other by an elastic force at the lower end side of the swivel 43. Due to this, it can be rotated and swiveled by the swivel 43 by the impact generated during the running of the vehicle. Then, the direction in which the tweeter 30 is not only changed arbitrarily, but also has a disadvantage in that an abnormal sound occurs in the speaker.

In addition, when the swivel 43 is rotated by an impact, there is a disadvantage that the wire 50 is twisted because there is no means that can limit the rotation of the swivel 43.

The present invention was created in order to solve the problems of the prior art as described above, an object of the present invention can improve the directivity of the tweeter by enhancing the coupling force of the connection itself connecting the woofer and the tweeter coaxially. To provide a coaxial speaker.

Another object of the present invention is to provide a coaxial speaker that can prevent the twisting of the wire connecting the woofer and the tweeter through the connection by limiting the rotation of the connection.

Coaxial speaker according to the present invention for achieving the above object, Woowoo (woofer) for generating a bass; A tweeter positioned at an upper side of the woofer to generate a high sound; The support member of the hollow body in which the lower end side is pressed into the central portion of the woofer and the rotary member rotatably coupled to the outer peripheral surface of the upper end side of the support member and the tweeter is mounted on the upper surface and the lower side is coupled to the rotating member. A connection part for coaxially connecting the woofer and the tweeter while having a vertical motion member that rotates in the same manner as the rotary member and moves in a seesaw form on the rotary member; A wire connecting the woofer and the tweeter through the connection part; And it is provided with a means for preventing the twist of the wire passing through the connection by limiting the rotation angle of the rotating member.

Hereinafter, a coaxial speaker according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view showing a schematic configuration of a coaxial speaker according to an embodiment of the present invention.

As shown, the coaxial speaker 100 according to the present embodiment is a woofer (110) for generating a low tone, a tweeter (Tweeter 120) for generating a high tone, the woofer 110 and the tweeter 120 Means 170 to prevent twisting of the connecting portion 130 and the wire 190 connected to the woofer 110 and the tweeter 120 through the connecting portion 130 and the rotary movement and the seesaw movement (Fig. 3).

The woofer 110 may include a first frame 111 having a hole formed at a center of a bottom surface thereof, a ring-shaped first plate 113 and a first plate 113 coupled to an outer surface of the first frame 111 adjacent to the hole. Ring-shaped first magnet 114 coupled to the bottom surface, the edge portion 115a coupled to the bottom surface of the first magnet 114 and the first plate 113 with a predetermined distance from the outer surface of the first plate 113 The first yoke 115 having a tubular protrusion (115b) located inside the), the edge portion is coupled to the first frame 111, the first diaphragm 117 formed with a hole in the center portion, the outer surface of the upper end side 1 is attached to the inner surface of the diaphragm 117 and the lower end side has a first voice coil 118 located between the first plate 113 and the protrusion 115b. Thus, when an external current is applied to the first voice coil 118, an electric field generated in the first voice coil 118 and the first plate 113, the first magnet 114, and the first yoke 115 are generated. The first voice coil 118 vibrates up and down by the magnetic field, and the first diaphragm 117 vibrates up and down, thereby generating a low sound.

The tweeter 120 has a second spaced apart from the inner surface of the second yoke 123 and the second yoke 123 and the second yoke 123 coupled to the inner surface of the second frame 121. The second magnet 124 and the second plate 125, which is sequentially stacked and coupled to the inside of the yoke 123, the second diaphragm 127 is coupled to the second frame 121, the upper side is the second diaphragm Attached to 127 and the lower side has a second voice coil 128 located between the second yoke 123 and the second plate 125. Thus, when an external current is applied to the second voice coil 128, the electric field generated in the second voice coil 128 and the second yoke 123, the second magnet 124, and the second plate 125 are generated. The second voice coil 128 vibrates up and down by the magnetic field, and the second diaphragm 127 vibrates up and down, thereby generating high-pitched sound. Reference numerals 119 and 129 are covers, and 112 is a damper.

The connecting portion 130 has a support member 140, a rotating member 150, and a vertical movement member 160 of the hollow body to connect the woofer 110 and the tweeter 120 coaxially, which This will be described in detail with reference to FIGS. 3 and 4. Figure 3 is an exploded perspective view of the connecting portion according to an embodiment of the present invention, Figure 4 is a cross-sectional view of the combination of FIG.

As shown, the support member 140 is the insertion tube 141 is pressed into the protrusion 115b of the first yoke 115, which is the central portion of the woofer 110, the upper side and the outer side at the top of the insertion tube 141 And a coupling piece 145 extending and formed upward from the inner peripheral surface side of the upper surface of the support tube 143 extending and formed. At this time, the outer diameter of the support tube 143 is formed larger than the outer diameter of the insertion tube 141, the coupling piece 145 is provided with a plurality of having a predetermined interval. The upper surface of the coupling piece 145 is formed with a hook frame 146 protruding to the outside of the coupling piece 145, the outer side one side and the other side is formed with an insertion protrusion 147 having elasticity. Insertion protrusion 147 is preferably formed symmetrically. Insertion protrusion 147 is formed in the cantilever shape, the upper side is a fixed end and the lower side is formed on the coupling piece 145 in the form of a free end. The hook 146 is caught by the end face 152 of the first rotating member 151 to be described later, and the insertion protrusion 147 is inserted into the insertion groove 153 of the first rotating member 151 to be described later. The wire 190 connecting the woofer 110 and the tweeter 120 passes through the insertion tube 141, the support tube 143, and the coupling piece 145.

The rotating member 150 has a ring-shaped first rotating member 151 and a cap-shaped second rotating member 155.

The first rotating member 151 is rotatably coupled to the outer surface of the coupling piece 145 and the wire 190 passes therethrough. The lower surface of the first rotating member 151 is supported in contact with the upper surface of the support tube 143, thereby preventing the first rotating member 151 from falling to the lower side of the supporting member 140. The inner surface of the first rotating member 151 is formed so that the lower side is further protruded inwardly than the upper side. When the first rotating member 151 is coupled to the engaging piece 145, the engaging frame 146 of the engaging piece 145 is caught by the end face 152 of the first rotating member 151, thereby The first rotating member 151 does not fall to the upper side of the support member 140. In addition, a plurality of insertion grooves 153 into which the insertion protrusions 147 of the coupling pieces 145 are inserted are formed at predetermined intervals on the lower inner surface of the first rotating member 151. Since the insertion protrusion 147 is inserted into the insertion groove 153, the first rotating member 151 is not rotated by an external force below a predetermined level. The front side edge portion of the insertion protrusion 147 is formed to be rounded (147a). When the first rotating member 151 is rotated by applying a predetermined force or more to the first rotating member 151, the insertion protrusion 147 is easily detached from the insertion groove 153 so that the other insertion groove 153 is adjacent to the first rotating member 151. To be inserted).

The second rotating member 155 is coupled to the outer surface of the first rotating member 151 and rotates in the same manner as the first rotating member 151. The bottom surface of the second rotating member 155 is opened and a rectangular coupling hole 155a is formed at the center of the upper surface. Passing holes 155b through which the wire 190 passes are respectively formed in the upper surface portion of the second rotating member 155 in the width direction outside of the coupling hole 155a. The through hole 155b is preferably formed symmetrically with respect to the center of the coupling hole 155a. Guide ribs 156 are formed on the upper surface portions of the second rotating member 155 between the coupling holes 155a and the through holes 155b to face each other, and are formed between the guide ribs 156 and the coupling holes 155a. The upper surface portion of the second rotating member 155 is formed of a curved surface 157 recessed downward. The coupling hole 155a, the guide rib 156, and the curved surface 157 guide the movement of the vertical movement member 160, which will be described later.

The vertical movement member 160 rotates in the same manner as the second rotary member 155 while having an upper surface with a case 161 on which the tweeter 120 is mounted and a guide protrusion 165 formed on the bottom of the case 161. At the same time, it moves in a seesaw form on the second rotating member 155. Side and bottom portions of the case 161 corresponding to the through-holes 155b of the second rotating member 155 are opened to form a passage 162 through which the wire 190 passes. The guide protrusion 165 extends downward from the bottom of the case 161 and extends downward from the bottom of the first guide protrusion 166 and the first guide protrusion 166 that both sides are supported by the guide rib 156. The second guide protrusion 167 is formed to have both side surfaces supported on the inner surface in the width direction of the coupling hole 155a. The bottom of the first guide protrusion 166 is formed to have the same curvature as the curved surface 157 of the second rotating member 155 to contact the curved surface 157. Therefore, when an external force is applied to the vertical movement member 160, the vertical movement member 160 moves along the curved surface 157 in the form of a seesaw.

A bolt 181 is integrally formed in the second guide protrusion 167, and a washer 185 is inserted into the bolt 181 and the nut 187 is fastened. The second guide protrusion 167 is formed so as not to be exposed to the lower side of the curved surface 157, and the washer 185 contacts the bottom surface of the curved surface 157. Therefore, the vertical movement member 160 is coupled to the second rotating member 155 by the bolt 181, the washer 185 and the nut 187. The coupling hole 155a is formed by the bottom surface of the first guide protrusion 166 and the curved surface 157 of the second rotating member 155, the bolt 181, the washer 185, and the nut 187. Exercise in the form of seesaw with reference to the center.

The means 170 prevents the twisting of the wire 190 connected to the woofer 110 and the tweeter 120 by passing through the connecting portion 130 by limiting the rotation angle of the rotating member 150. This will be described with reference to FIGS. 3, 5A and 5B. 5A and 5B are sectional views taken along line “A-A” of the support member and the first rotating member shown in FIG. 3.

As shown, the means 170 is a locking projection 171 formed on the other side of the coupling piece 145 of the support member 140 and the locking rail 175 formed on the inner side of the upper side of the first rotating member 151. Is prepared. After the first rotating member 151 is coupled to the coupling piece 145, and then the first rotating member 151 is rotated in the reverse direction, as shown in FIG. 5A, one side of the locking protrusion 171 is connected to the locking rail ( 175 is no longer rotated by being rotated and rotated in the forward direction, as shown in FIG. 5B, the other side of the locking protrusion 171 is caught by the other side of the locking rail 175 and is no longer rotated. . That is, since the first rotating member 151 is not rotated by more than 360 °, the wire 190 passing through the connecting portion 130 is not twisted.

And, when engaging the first rotating member 151 to the coupling piece 145, the engaging projection 171 formed on the coupling piece 145 can be easily located on the inner side of the upper side of the first rotating member 151. One side of the inner side of the lower side of the first rotating member 151 is formed of an upper side inner surface and a flat access path 154.

As described above, the insertion protrusion 147 formed on the coupling piece 145 is inserted into the insertion groove 153 of the first rotating member 151 to rotate along the outer surface of the coupling piece 145. The rotating member 151 is supported to maintain the rotated state. When the first rotating member 151 rotates due to a predetermined external force applied to the first rotating member 151, the insertion protrusion 147 is inserted into another adjacent insertion groove 153, so that the first rotating member 151 is removed. Support to maintain state. That is, the first rotating member 151 is not rotated by a small impact by the insertion protrusion 147 and the insertion groove 153.

The movement of the vertical movement member 160 will be described with reference to FIGS. 3, 6a, 6b and 6c. 6A to 6C are cross-sectional views taken along line "B-B" of the second rotating member and the vertically moving member shown in FIG.

After installing the coaxial speaker 100 according to the present exemplary embodiment, the first rotating member 151 is rotated so that the vertical movement member 160 faces the proper direction as shown in FIG. 6A. Thereafter, when the front side of the vertical movement member 160 is pressed, the front side of the vertical movement member 160 faces the ground as shown in FIG. 6B, and when the rear side of the vertical movement member 160 is pressed, as shown in FIG. 6C. The rear side of the vertical movement member 160 faces the ground. In this way, by adjusting the directing angle of the vertical movement member 160 to move in the seesaw shape to adjust the directing angle of the tweeter 120 (see Fig. 2) mounted on the vertical movement member 160. Since the vertical movement member 160 is firmly coupled to the second rotating member 155 by the bolt 181, the washer 185, and the nut 187, the vertical movement member 160 is formed by a small impact. Do not exercise as.

As described above, the coaxial speaker according to the present invention is supported by the rotating member by the insertion protrusion and the insertion groove, the vertical movement member is firmly coupled to the rotating member by the bolt and washer and nut, so that the rotating member by a small impact And the vertical movement member does not rotate or move in the seesaw shape. That is, since the position of the tweeter mounted on the vertical motion member is not changed by a small impact, the directivity of the tweeter is improved.

In addition, since the rotating member does not rotate more than 360 ° in the forward and reverse directions, the twisting of the wire connecting the woofer and the tweeter through the rotating member is prevented.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

1 is a cross-sectional view showing a schematic configuration of a conventional coaxial speaker.

Figure 2 is a cross-sectional view showing a schematic configuration of a coaxial speaker according to an embodiment of the present invention.

Figure 3 is an exploded perspective view of the connecting portion according to an embodiment of the present invention.

4 is a cross-sectional view of FIG. 3.

5A and 5B are sectional views taken along line “A-A” of the support member and the first rotating member shown in FIG. 3;

6A to 6C are cross-sectional views taken along line “B-B” of the second rotary member and the vertical motion member shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

110: Woofer 120: Twitter

140: support member 150: rotating member

160: vertical movement member 190: wire

Claims (4)

Woofers that produce bass sounds; A tweeter positioned at an upper side of the woofer to generate a high sound; The support member of the hollow body in which the lower end side is pressed into the central portion of the woofer and the rotary member rotatably coupled to the outer peripheral surface of the upper end side of the support member and the tweeter is mounted on the upper surface and the lower side is coupled to the rotating member. A connection part for coaxially connecting the woofer and the tweeter while having a vertical motion member that rotates in the same manner as the rotary member and moves in a seesaw form on the rotary member; A wire connecting the woofer and the tweeter through the connection part; And, And means for limiting the rotational angle of the rotating member to prevent twisting of the wire passing through the connection portion. The method of claim 1, The support member is press-fitted to the central portion of the woofer and the wire extending through the inner side and the upper side and the outer side of the insertion tube and formed and having a diameter larger than the outer diameter of the insertion tube and the wire inside the It extends and formed from the inner circumferential surface side of the upper surface of the support tube and the upper side of the support tube passing through the plurality of formed at predetermined intervals, the wire has a coupling piece passing through the inside, The rotating member is rotatably coupled to the outer surface of the coupling piece, the lower surface is in contact with the upper surface of the support tube and the ring-shaped first rotating member and the bottom surface through which the wire passes, and the upper surface in the center of the rectangular coupling hole Formed in the widthwise outer portion of the coupling hole, each through hole through which the wire passes, has a cylindrical second rotating member coupled to an outer surface of the first rotating member, The vertical movement member is formed in the cylindrical case and the bottom surface of the case is formed in the upper and the upper surface is open and the tweeter is formed on the side and bottom and one side and the other side of the passage through which the wire passes to correspond to the through hole in the coupling hole Coaxial speaker, characterized in that having a guide projection coupled to guide the case in the seesaw movement relative to the coupling hole. The method of claim 2, The upper surface of the coupling piece is formed with a hook frame protruding to the outside of the coupling piece, one side and the other side of the outer surface is formed with an insertion projection having elastic, The inner surface of the first rotating member is formed so that the lower side is protruded in a more protruding form than the upper side, when the first rotating member is coupled to the coupling piece, the engaging frame of the coupling piece is the cross-section ( Hang on the back, Insertion grooves into which the insertion projections of the coupling piece are inserted are formed at predetermined intervals on an inner surface of the lower side of the first rotating member. A pair of guide ribs opposed to each other protrude upward from the upper surface portion of the second rotating member between the coupling hole and the through hole, and the upper surface portion of the second rotating member between the guide rib and the coupling hole is respectively formed. Formed into a curved surface recessed downward, The guide protrusion extends and is formed downward from the bottom of the case so that both side surfaces are supported by the guide ribs, and the bottom surface is formed with the same curvature as the curved surface so that the first guide protrusion and the bottom surface of the first guide protrusion are in contact with the curved surface. It is extended and formed downward and has a second guide projection on both sides supported on the inner surface in the width direction of the coupling hole, The vertical movement member and the second rotating member are coupled to each other by a bolt formed integrally with the second guide protrusion and a washer coupled to the bolt to contact the bottom surface of the curved surface and a nut fastened to the bolt. Coaxial speaker. The method of claim 3, wherein The means is formed on the engaging projection formed on the other side of the coupling piece of the support member and the upper inner surface of the first rotating member, when the first rotating member is rotated forward one side of the locking projection and its one side contact When the first rotation member is rotated in reverse, the other side surface of the locking projection and the other side thereof is in contact with the locking rail to prevent the first rotation member to rotate more than a predetermined angle in the forward and reverse directions, One side of the lower inner surface of the first rotating member is formed as a flat access path with an inner surface of the upper side of the first rotating member so that when the first rotating member is coupled to the engaging piece, the engaging projection of the engaging piece is formed as an access path. Coaxial speaker characterized in that.