JPH10276488A - Protection structure for on-vehicle speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of abnormal sounds or the occurrence of voice coil burning by holding a protector, which is molded in the form of a cap, on the inner peripheral surface of the gasket through press-contact by projecting the fore side of the speaker unit. SOLUTION: A protector 10 is molded in the form of the cap like a resin thin plate and forms the front view. At the almost center of the front face, a stick-shaped projection 15 is formed. When the protector 10 is still attached to a speaker unit 90 even after the speaker unit 90 is integrated on the side of the vehicle, the projection 15 is abutted to a vehicle trim or a grill attached to the trim, and the attachment of the grill or the like is disabled. When attaching this protector 10 to the speaker unit 90, it is enough only to insert a root part 11 of the protector 10 into an inner peripheral surce 101a of the gasket 101 with press-contacting and when detaching the protector 10 attached to the speaker unit 90, it is enough only to pick up and pull the projection 15 with finger.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection structure for an in-vehicle speaker, and more particularly, to a vehicular speaker for preventing a speaker from being roughly handled by a line worker when assembling a manufactured speaker to a vehicle. Regarding the protection structure.

[0002]

2. Description of the Related Art In-vehicle speaker units are generally shown in FIG.
In the figure, reference numeral 91 denotes a yoke plate. A columnar pole piece 92 is formed above a disk-shaped yoke plate 91, and a magnet 94 is arranged between the annular top plate 93 and the yoke plate 91. A frame 97 is fixed to the upper surface of the top plate 93, and a thin cylindrical voice coil bobbin 95 is supported at a lower portion of the frame 97 via a damper 98 so as to be able to vibrate.
A voice coil 96 is wound about twice below the bottom of the pole piece 92, and is arranged in a gap between the top of the pole piece 92 and the top plate 93. A lower end of a diaphragm 99 called a cone is fixed to an upper portion of the voice coil bobbin 95, and an upper end of the diaphragm 99 is connected to a frame 97 through an edge 100.
Is supported at the upper end. An annular gasket 101 and an annular cushion 102 to which a vehicle body trim (not shown) is attached are fixed above the outer peripheral side of the edge 100. A center cap 103 is fixed to the lower center side of the diaphragm 99, and the voice coil 96 is connected to a terminal 105 fixed to the frame 97 via a lead wire 104. When the speaker unit 90 is attached to a vehicle door or the like, the speaker unit 92
In many cases, a grill (not shown) is arranged in the opening of the trim facing the rim.

[0003]

A vehicle-mounted speaker is mounted inside a door, below an instrument panel, behind a rear seat, or the like, and the mounting is performed as part of the vehicle assembly process. For this reason, the speaker units to be mounted are often stacked and placed next to the vehicle assembly line as shown in FIG. Caliber 30
In the case of a woofer that is about a centimeter, the operator handles it with care, but a full-range speaker unit with a diameter of about 10 cm is light in weight, and some workers use one hand to grab the edges and the like. . The edge 100 and the diaphragm 99 are not so strong, and may be partially crushed when grasped or the like. When the diaphragm 99 or the edge 100 is partially crushed, the balance of the entire diaphragm 99 is lost, the vibration is not good, and undulation is caused. Normally, the inside gap between the pole piece 92 and the voice coil bobbin 95 is as small as about 0.25 mm. A sound is produced. In severe cases, the voice coil 96 may be burned out. Although it is caused by the rudimentary handling of the workers, it is actually impossible to expect the careful handling of the speaker unit 90 to all the workers in the vehicle assembly line. To prevent this, some measures had to be taken.

[0004] The present invention has been made in view of the above problems, and even if a worker on a vehicle assembly line handles a little rough, the edge and the diaphragm are not deformed, generating abnormal noise and burning the voice coil. It is an object of the present invention to provide a protection structure for an in-vehicle speaker that can prevent an accident from occurring.

[0005]

In order to achieve the above object, a protection structure (1) for a vehicle-mounted speaker according to the present invention includes a protection body formed in a thin plate-like cap shape. The protection body is characterized in that the front side of the speaker unit is convex and is held by pressing against the inner peripheral surface of the gasket.

According to the protection structure (1) for the in-vehicle speaker, even if the speaker units are stacked beside the assembly line, or if they are handled a little rough by a line worker, the edges and the diaphragm are not affected. Since it is protected by the protective body, it is not damaged, and it is possible to prevent the occurrence of abnormal noise and the occurrence of a fire accident of the voice coil.

[0007] Further, since the protective body is merely held by pressure contact on the inner peripheral surface of the gasket, it can be easily removed after the assembly operation is completed.

[0008] A protective structure (2) for an in-vehicle speaker according to the present invention includes a protective body formed in a thin plate-like cap shape, and the protective body is provided inside a root portion of the protective body. It is characterized in that a locking claw for locking to the outer peripheral surface of the front end portion of the speaker frame is formed.

[0009] According to the above-mentioned protection structure (2) for the vehicle-mounted speaker, the protection body can be easily and reliably attached to the speaker unit by the locking claw. When the speaker unit has been assembled to the vehicle, the protective body can be easily removed from the speaker unit simply by removing the locking claw from the outer peripheral surface of the front end of the speaker frame.

[0010] The protection structure (3) for a vehicle-mounted speaker according to the present invention is of a type in which a speaker unit is attached to a trim of a vehicle via a bracket,
The protection body is formed in a thin plate-like cap shape, and a mounting piece having a hole for screw insertion corresponding to a screwing portion between the speaker frame and the bracket is extended from a root portion of the protection body. Features.

According to the protection structure (3) for the in-vehicle speaker, the protection body can be screwed to a screwing portion between the speaker frame and the bracket on the mounting piece of the protection body. Can be firmly attached to the speaker unit. Therefore, it is possible to protect the speaker unit and reliably prevent the edge and the diaphragm from being damaged.

Further, the protection structure (4) for a vehicle-mounted speaker according to the present invention is characterized in that a screwing portion is formed on an outer peripheral portion of a gasket of a speaker unit, while a protection body formed into a thin plate-like cap shape. A screw portion to be screwed to the screw portion is formed at a root portion.

According to the protection structure (4) for the in-vehicle speaker, since the screw portion is formed on the outer peripheral portion of the gasket, and the screw portion is formed on the base portion of the protection body, the speaker and the gasket are protected. While the protection body can be easily attached to the unit, the protection body does not come off from the speaker unit, and the edge and the diaphragm can be reliably protected. Further, the protection body can be easily removed from the speaker unit.

Further, in the protection structure (5) for an in-vehicle speaker according to the present invention, a plurality of hook-shaped mounting pieces extend from the base of a protection body formed into a thin plate-like cap shape. A flange extends from the front end of the speaker frame, and a cutout portion and a fixing protrusion for inserting the mounting piece are formed in the flange.

[0015] According to the protection structure (5) for the vehicle-mounted speaker, after the hook-shaped mounting piece is passed through the cutout portion, the protector is rotated by slightly rotating the protector. -It can be easily attached to the unit, and the edge and the diaphragm can be reliably protected.

Further, in the protection structure (6) for a vehicle-mounted speaker according to the present invention, a cushion for trim attachment in the speaker unit is formed in a disk shape that almost completely covers the front surface of the diaphragm to constitute a protection body. On the other hand, after assembling the speaker unit to the vehicle side, a plurality of arc-shaped slits are formed in the vicinity of the outer periphery of the cushion so that only the portion located in front of the gasket is easily removed. It is characterized by having.

According to the protection structure (6) for the vehicle speaker, the cushion for mounting the trim functions as a protection body, and there is no need to manufacture a protection body separate from the speaker unit. Also, a plurality of arc-shaped slits are formed near the outer periphery of the cushion,
After installing the speaker unit on the vehicle side,
The protector portion of the cushion can be easily cut and removed.

Further, in the protection structure (7) for a vehicle-mounted speaker according to the present invention, the gasket in the speaker unit is formed in a disk-like convex shape which almost completely covers the front surface of the diaphragm to constitute a protection body. A plurality of arc-shaped slits are formed in the vicinity of the outer periphery of the gasket so that, after assembling the speaker unit to the vehicle, only the outer peripheral portion of the edge is easily cut off. And

According to the protection structure (7) for the vehicle-mounted speaker, the gasket has a function as a protection body, and it is not necessary to manufacture a protection body separate from the speaker unit. Further, a plurality of arc-shaped slits are formed in the vicinity of the outer periphery of the gasket, and after the speaker unit is mounted on the vehicle side, the protector portion of the gasket is easily cut and removed. Can be.

Further, in the protection structure (8) for a vehicle-mounted speaker according to the present invention, the gasket of the speaker unit is extended inwardly in a mesh shape, and the extended portion functions as a protection body and a grill. It is characterized by having.

According to the protection structure (8) for the vehicle-mounted speaker, the gasket extends inward in a mesh-like manner, and the extended portion functions as a protective body and a grill. The plate can be protected by the gasket. Further, the portion of the gasket functioning as the protection body does not need to be removed even after assembly, and can be used as a grill.

Further, in the protection structure (9) for a vehicle-mounted speaker according to the present invention, a projection for preventing forgetting to remove or to cut off the protection body after assembling the speaker unit to the vehicle is provided by the projection. It is characterized by being formed on the front of the body.

[0023] According to the vehicle-mounted speaker protection structure (9), if the protection body is left attached to the speaker unit even after the speaker unit has been assembled to the vehicle, the projections may become grilles or the like. In this case, since the grill cannot be attached, it is not necessary to remove or cut off the protection body.

[0024] In the protection structure (10) for an in-vehicle speaker according to the present invention, the protection body is made of a hard resin, paper, or resin impregnated cloth so that it can be used a plurality of times. It is characterized by.

According to the protection structure (10) for the vehicle-mounted speaker, the protection body can be recycled, and cost reduction and effective use of resources can be achieved.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a protection structure for an in-vehicle speaker according to the present invention.
FIG. 1 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to Embodiment (1), in which 10 indicates a protection body. The protection body 10 is formed in a thin resin cap shape and has a circular shape in a front view. A rod-shaped projection 15 is formed at a substantially central portion of the front surface, and a speaker unit 90 is formed.
After the protective body 10 is installed in the vehicle,
When the projection 15 is kept attached to the unit 90, the projection 15 abuts on a vehicle trim or a grill (not shown) attached to the trim, and the installation of the grill or the like becomes impossible. The body 10 is prevented from being forgotten to be removed from the speaker unit 90. The projection 15 also has a handle when the protective body 10 is removed from the speaker unit 90.

The protective body 10 may be made of resin, hard paper or resin-impregnated cloth, or may be made slightly thicker so as to have a little strength so that it can be recycled, or it may be disposable. When forming a film, the film may be thin. Further, the projections 15 are not indispensable in view of cost, and the cost is more important when disposable.

When attaching the protective body 10 to the speaker unit 90, the root portion 11 of the protective body 10 may be pressed into and inserted into the inner peripheral surface 101a of the gasket 101. When removing 10, the protrusion 15 may be picked up with a finger and pulled.

If the protector 10 is mounted on the speaker unit 90, the speaker unit 90 can be stacked on the side of the assembly line of the vehicle, or can be handled slightly rough by the line operator. The edge 100 and the diaphragm 99 are not damaged, and the abnormal sound caused by the contact between the pole piece 92 and the voice coil bobbin 95 due to the distortion of the diaphragm 99 or the contact between the voice coil 96 and the top plate 93 is caused. Generation and voice coil 96
Can prevent the occurrence of burnout accidents.

The speaker unit 9 of the protection body 10
Attachment to and detachment from the protective body 10 can be easily performed by utilizing the elasticity of the protective body 10. Further, the formation of the projections 15 can prevent forgetting to remove the protection body 10 from the speaker unit 90 after the speaker unit 90 is assembled in the vehicle.

FIG. 2 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to the embodiment (2). In the drawing, reference numeral 20 denotes a protection body. The protective body 20 is formed in the shape of a thin resin cap in the same manner as the protective body 10, has a circular shape when viewed from the front, and has a rod-like projection 25 at a substantially central portion of the front surface.
Are formed. The protector 20 is different from the protector 10 in that a locking claw 22 for locking the protector 20 to the outer peripheral surface 97 a of the front end of the frame 97 is formed inside the base 21 of the protector 20. Is a point.

The formation of the locking claws 22 allows the protection body 20 to be easily and securely attached to the speaker unit 90. In addition, when the protection body 20 is removed, the locking claws 22 are attached to the outer periphery of the distal end. The protective body 20 can be easily removed from the speaker unit 90 simply by removing it from the surface 97a. In addition, it has the same effect as the protective body 10.

FIG. 3 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to Embodiment (3), in which 30 indicates a protection body. FIG. 3 shows a type in which the speaker unit 110 is attached to a vehicle trim (not shown) via a bracket 35.
7, a flange 97b is extended, and a plurality of mounting holes 97c are formed in the flange 97b. On the other hand, a burring 36 for screwing is formed in the bracket 35 corresponding to the mounting hole 97c. A screw insertion hole 33 corresponding to the mounting hole 97c extends from the base 31 of the protection body 30. The protection body 30 is different from the protection body 20 in that a mounting piece 32 and a hole 33 are formed in place of the locking claw 22, and a projection 34 similar to the projection 25 is provided at a substantially central portion of the front surface of the protection body 30. Is formed.

The protector 30 can be screwed at the same time when the flange 97b of the frame 97 and the bracket 35 are screwed by using the mounting piece 32, and the protector 30 is firmly fixed to the speaker unit 110 by screwing. Can be attached to

In the protection structure of the vehicle-mounted speaker according to the embodiment (3), the speaker unit 110 can be attached to the vehicle through the bracket 35 via the bracket 35. Unit 11
0 can be securely and firmly attached. In addition, it has the same effect as the protection structure of the vehicle-mounted speaker according to the embodiment (1).

FIG. 4 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to the embodiment (4). In the drawing, reference numeral 40 denotes a protection body. The protective body 40 is formed in a thin cap shape made of resin like the protective body 10 and has a circular shape when viewed from the front. A rod-shaped projection 45 is formed at a substantially central portion of the front surface.

On the other hand, the outer peripheral portion of the gasket 101 has a tapered screw portion 10 having a length of about 1/4 of the circumference.
1b is formed, and a screw portion 42 corresponding to the screwing portion 101b is formed on the base portion 41 of the protection body 40.

According to the protection structure for a vehicle-mounted speaker according to the embodiment (4), the protection unit 40 is attached to the speaker unit 90.
Can be easily attached, and the attached protective body 40 does not easily come off the speaker unit 90, and the speaker unit 90 can be reliably protected by the protective body 40. In addition, the removal of the protection body 40 from the speaker unit 90 may be performed by rotating the protection body 40 by about 1/4 turn contrary to the mounting of the protection body 40, and the removal is easy.

FIG. 5 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to Embodiment (5). In the drawing, reference numeral 50 denotes a protection body. The protective body 50 is also configured in substantially the same manner as the protective body 10, and its main body is formed in a thin resin cap shape, and a rod-shaped projection 55 is formed at a substantially central portion of the front surface. A plurality of hook-shaped attachment pieces 52 extend from the base 51 of the protection body 50, while a flange 97d extends from the front end of the frame 97, and a cut for inserting the attachment piece 52 through the flange 97d. Missing part 97e
Is formed, and a mounting piece 5 is provided on the rear side of the flange 97d.
A plurality of fixing protrusions 97f for locking the fixing protrusions 2 are formed, and a fitting hole 52a into which the fixing protrusion 97f is fitted is formed at the tip of the mounting piece 52.

According to the protection structure of the vehicle-mounted speaker according to the embodiment (5), after the hook-shaped mounting piece 52 is passed through the cut-out portion 97e, the protection body 50 is slightly rotated to protect the speaker. The body 50 can be easily attached to the speaker unit 90, and the edge 100 and the diaphragm 99 can be reliably protected. The protective body 50 can be easily removed from the speaker unit 90 by slightly rotating the protective body 50 in a direction opposite to the direction in which the protective body 50 is mounted, and removing the mounting piece 52 through the notch 97e. Can be. Protective body 50 can also provide substantially the same effect as protective body 10.

FIGS. 6 (a) and 6 (b) are a sectional view and a plan view showing a protection structure for an in-vehicle speaker according to the embodiment (6), wherein reference numeral 60 denotes a protection body. The protection body 60 is formed by extending a cushion 102 for trim attachment inward, and is formed in a disk shape that almost completely covers the front surface of the diaphragm 99.
2, a plurality of arc-shaped slits 102a are formed, and a portion between the slits 102a serves as a connecting portion 102b between the protector 60 and the cushion 102.

According to the vehicle speaker protection structure of the embodiment (6), the cushion 10 for trim attachment is provided.
The protective body 60 integral with the second unit 2 serves to protect the diaphragm 99 and the edge 100, and there is no need to manufacture a separate protective body 60 from the speaker unit 90, so that the cost can be reduced. Further, after the speaker unit 90 is mounted on the vehicle side, if only the connection portion 102b is cut, the protection body 60 can be cut off while leaving the cushion 102, and the protection body 60 can be easily removed.

FIGS. 7A and 7B are a cross-sectional view and a plan view, respectively, showing a protection structure for an in-vehicle speaker according to the embodiment (7). In the drawing, reference numeral 70 denotes a protection body. The protection body 70 is formed by extending the gasket 101 inward, and is formed in a disk shape that almost completely covers the front surface of the vibration plate 99. A plurality of protection bodies 70 are provided between the protection body 70 and the gasket 101. Arc-shaped slits 101c are formed, and the slits 10c are formed.
A portion between the slit 1c and the slit 101c is a connection portion 101d between the protection body 70 and the gasket 101.

According to the protection structure of the vehicle-mounted speaker according to the embodiment (7), the protection body 7 integrated with the gasket 101 is provided.
0 has a function of protecting the diaphragm 99 and the edge 100, and there is no need to manufacture a protective body 70 separate from the gasket 101, so that the cost can be reduced. Further, after the speaker unit 90 is assembled on the vehicle side, the protective body 70 can be cut off by leaving the gasket 101 on the speaker unit 90 side only by cutting off the connection portion 101d.

FIG. 8 is a sectional view showing a protection structure for an in-vehicle speaker according to the embodiment (8). In the drawing, reference numeral 80 denotes a protection body. The protection body 80 is configured such that the gasket 101 extends inwardly in a mesh-like manner, and the protection body 80 also has a function as a grill. Therefore, the protective body 80 does not need to be removed even after the speaker unit 90 is assembled on the vehicle side, and is made as a durable slightly thick resin molded product.

According to the protection structure of the vehicle-mounted speaker according to the embodiment (8), the protection body 80 also functions as a grill, so that it is not necessary to cut it off after assembling it to a vehicle, so that it does not require any trouble and the protection body is not required. Effective use of resources can also be achieved without discarding 80.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to Embodiment (1) of the present invention.

FIG. 2 is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to Embodiment (2) of the present invention.

FIG. 3 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to Embodiment (3) of the present invention.

FIG. 4 is a cross-sectional view showing a protection structure for an in-vehicle speaker according to Embodiment (4) of the present invention.

FIG. 5 is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to Embodiment (5) of the present invention.

FIG. 6A is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to Embodiment (6), and FIG. 6B is a plan view of a cushion.

FIG. 7A is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to Embodiment (7), and FIG. 7B is a plan view of a gasket.

FIG. 8 is a cross-sectional view showing a protection structure for a vehicle-mounted speaker according to an embodiment (8).

FIG. 9 is a cross-sectional view showing a conventional speaker unit.

FIG. 10 is a side view of the speaker unit showing a stacked state in the assembly line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Protective body 11 Root part 15 Protrusion 20 Protective body 21 Root part 22 Locking claw 25 Protrusion 30 Protective body 31 Root part 32 Attachment piece 33 Hole 34 Protrusion 35 Bracket 36 Burring 40 Protective body 41 Root part 42 Screw part 45 Protrusion 50 Protection Body 51 Root 52 Mounting piece 52a Fitting hole 55 Projection 60 Protector 70 Protector 80 Protector (grill) 90 Speaker unit 91 Yoke plate 92 Pole piece 93 Top plate 94 Magnet 95 Voice coil bobbin 96 Voice coil 97 Frame 97a Tip Outer peripheral surface 97b Flange 97c Mounting hole 97d Flange 97e Notch 97f Fixing projection 98 Damper 99 Diaphragm 100 Edge 101 Gasket 101a Inner peripheral surface 101b Screwed portion 101c Slit 10 1d Connection part 102 Cushion 102b Connection part 103 Center cap 104 Lead wire 105 Terminal 110 Speaker unit

Claims (10)

[Claims] 1. A protective body formed in the shape of a thin plate-shaped cap, wherein the protective body is held by pressing against the inner peripheral surface of a gasket with the front direction of the speaker unit protruding. A protection structure for a vehicle-mounted speaker. 2. A locking device comprising a protection member formed in a thin plate-like cap shape, and locking the protection member to the outer peripheral surface of the front end portion of the speaker frame inside the base portion of the protection member. A protection structure for an in-vehicle speaker, wherein a claw is formed. 3. A type wherein the speaker unit is attached to a trim of a vehicle via a bracket,
The protection body is formed in a thin plate-like cap shape, and a mounting piece having a hole for screw insertion corresponding to a screwing portion between the speaker frame and the bracket is extended from a root portion of the protection body. Features a protection structure for in-vehicle speakers. 4. A screw portion is formed on an outer peripheral portion of a gasket of the speaker unit, and a screw portion screwed to the screw portion is formed at a base portion of a protective body formed in a thin plate-like cap shape. A protection structure for an in-vehicle speaker, wherein the protection structure is formed. 5. A plurality of hook-shaped mounting pieces extend from the base of a protective body formed in a thin plate-like cap shape, while a flange extends from a front end of a speaker frame. A notch portion through which the mounting piece is inserted and a fixing projection are formed on the speaker. 6. A protector is formed by forming a cushion for trim attachment in a speaker unit so as to substantially completely cover a front surface of a diaphragm, and after assembling the speaker unit to a vehicle side. A plurality of arc-shaped slits are formed in the vicinity of the outer periphery of the cushion so as to facilitate cutting off while leaving only a portion located in front of the gasket. 7. A gasket in the speaker unit is formed in a disk-like convex shape that covers the front surface of the diaphragm almost completely to constitute a protective body, and after assembling the speaker unit to the vehicle side, an edge outer periphery is formed. A plurality of arc-shaped slits are formed in the vicinity of the outer periphery of the gasket so that only the portion located at the left side is easily removed. 8. A protection structure for an in-vehicle speaker, wherein a gasket of the speaker unit extends inwardly in a mesh-like manner, and the extended portion functions as a protection body and a grill. 9. A projection for preventing forgetting to remove or to cut off the protection body after assembling the speaker unit to the vehicle side is formed on a front surface of the protection body. The protection structure for a vehicle-mounted speaker according to any one of Items 1 to 7. 10. The protective body according to claim 1, wherein the protective body is made of a hard resin, paper, or a resin-impregnated cloth so as to enable a plurality of uses. The protection structure of the vehicle-mounted speaker according to the paragraph.