JP2011035577A - Speaker device and speaker installation structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker installation structure in which a speaker is held by a speaker holder with appropriate force without screw and gasket, and sound quality degradation and vibration noise generation are suppressed. <P>SOLUTION: In a speaker device Sp, a boss 511 penetrates an engagement hole 411 that is formed in a flange part 41, a cover part 52 contacts the outside of the flange part 41, and a pressing part 53 presses the back side of the flange part 41, so that the speaker 4 is held by the speaker holder 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a speaker device mounted inside a thin television receiver such as a liquid crystal television receiver and a speaker mounting structure for mounting the speaker device.

  In recent years, thin television receivers using LCD (Liquid Crystal Display Panel) and PDP (Plasma Display Panel) have become mainstream. A flat-screen television receiver includes a front cabinet having a rectangular front portion and a side wall portion erected on the rear side from each of the four sides of the front portion, a rear cabinet covering the back side of the front cabinet, The speaker is attached to the front cabinet and outputs sound. In the flat-screen television receiver, in order to simplify the appearance from the front, a hole through which the sound from the speaker passes is formed at a position (side wall or the like) that cannot be seen from the front of the front cabinet. There are many cases.

  The speaker is disposed such that a sound output opening that exposes the diaphragm is opposed to a hole formed in a side wall portion of the front cabinet. At this time, the flange portion of the speaker is held by a speaker holder, and the speaker holder is fixed in contact with the side wall portion.

  As the speaker holder, a resin-made one having a plurality of elastically deformable engaging frame portions that can sandwich the flange portion of the speaker has been proposed (for example, registered utility model No. 3081747, registered utility model number 1). No. 3063297, etc.). The speaker holder can hold the speaker by engaging the flange portion with the engagement frame portion.

  When the speaker is held by the speaker holder, if the contact strength between the speaker and the speaker holder is too strong, the movement of the diaphragm is deteriorated and the sound quality is deteriorated. Conversely, chatter noise is generated when the contact strength between the speaker and the speaker holder is low. Therefore, when attaching the speaker to the speaker holder, an elastic gasket is attached between the speaker holder and the flange portion so that the contact strength between the speaker and the speaker holder is appropriately adjusted. .

Registered Utility Model No. 3081747 Registered Utility Model No. 3063297

  The speaker holder described in the registered utility model No. 3081747 or the registered utility model No. 3063297 may be deformed by heating or secular change, and the contact strength with the speaker may be increased or decreased. Even in these cases, the change in the contact strength is adjusted to some extent by the elasticity of the gasket. However, if the change becomes too large, the change cannot be made, resulting in a decrease in sound quality and chatter noise.

  In view of this, a method is conceivable in which the speaker holder is formed of a deformable and highly vibration-absorbing material (rubber, urethane, or the like) to suppress deterioration in sound quality and chatter noise. However, speaker holders made of a deformable and highly vibration-absorbing material often do not have sufficient strength to hold the speakers with an appropriate force. It is difficult to hold with a stable force.

  Therefore, an object of the present invention is to provide a speaker mounting structure that can attach a speaker holder to a speaker without using screws and gaskets, and can suppress deterioration in sound quality and generation of chatter sound over a long period of time.

  In order to achieve the above object, the present invention includes a speaker having a flange portion formed around a sound output opening, and a speaker holder that is integrally formed of a vibration-proof material having flexibility and holds the speaker. A speaker device fixed to a cabinet of a device, wherein the speaker holder includes a frame-shaped buffer portion that contacts the front side of the flange portion, and an engagement hole that protrudes from the buffer portion and is formed in the flange portion. Connected to the penetrating boss, the edge portion of the buffer portion, a pair of opposed cover portions, a pair of press portions formed in the vicinity of the boss of the buffer portion, and the tip of the press portion, A fixing portion fixed to the cabinet by a fixing screw, the boss penetrates the engagement hole, the pair of cover portions contact the outside of the flange portion, and the presser portion is the flange. By pressing the rear side of the Nji portion, to provide a speaker apparatus wherein a speaker is held in the speaker holder.

  According to this configuration, it is possible to hold the speaker with an appropriate force that is not too strong and not too weak without using a fastening member such as a screw or a buffering member such as a gasket. Thereby, a component can be reduced and the effort and time concerning an assembly | attachment can be saved.

  Moreover, since it can hold | maintain with appropriate force, generation | occurrence | production of malfunctions, such as deterioration of sound quality and a chatter sound, can be suppressed. Further, since the speaker holder is made of a flexible material, it can be easily attached to a place where it is difficult to attach the speaker holder with a conventional high-rigidity speaker holder. Thereby, workability | operativity and efficiency improve and the cost of manufacture can be reduced.

  The said structure WHEREIN: The said fixing | fixed part may be formed so that the said screw for fixing may be arrange | positioned in the direction which cross | intersects the protrusion direction of the said boss | hub. According to this configuration, even when the sound output opening of the speaker is attached so as to intersect with the cabinet, the fixing screw can be attached to the cabinet, so that workability is good. Thereby, the time and effort required for assembly and maintenance can be reduced, and the cost can be reduced.

  The said structure WHEREIN: The said fixing | fixed part may have the shape where the front end side opened. According to this configuration, since a part of the fixed part is opened, it can be easily deformed. Thereby, even when there is no room in the space inside the cabinet, it can be attached while being deformed, and the labor of assembling can be saved.

  In order to achieve the above object, the present invention provides a speaker mounting structure for fixing a speaker device having the above configuration to a front cabinet in which a buffer portion is in contact with a side wall provided upright from an end portion of the front cabinet. A screw boss that protrudes from the rear surface of the front cabinet and has a screw hole into which the fixing screw is screwed, and a pair of positioning ribs that protrude from the rear surface of the front cabinet and come into contact with the pressing portion of the speaker holder. The buffer portion is brought into contact with the side wall portion, the pressing portion is brought into contact with the positioning rib, and the fixing portion is fixed to the screwing rib so that the pressing portion presses the back side of the flange portion. A speaker mounting structure can be provided.

  In the above configuration, a presser rib that protrudes in parallel with the side wall portion from the front cabinet is provided. When the fixing portion is fixed to the screwing rib, the presser rib is connected to the flange portion. Press the back side. According to this, since the speaker holder can be brought into close contact with the speaker, it is possible to suppress the occurrence of sound leakage and chatter noise.

  In the above configuration, when the rear cabinet is attached to the front cabinet, a presser rib formed on the rear cabinet is provided so as to face the presser rib, and the rear cabinet is attached and fixed to the front cabinet. In this case, presser ribs formed in the front cabinet and the rear cabinet may press the pair of cover portions against the back side of the flange portion.

  As the electronic apparatus having the above structure, a thin television receiver can be given.

  ADVANTAGE OF THE INVENTION According to this invention, a speaker holder can be attached to a speaker without using a screw and a gasket, and the speaker attachment structure which can suppress deterioration of sound quality and generation | occurrence | production of chatter sound over a long period of time can be provided.

It is a perspective view of the state which decomposed | disassembled the front cabinet and rear cabinet of a liquid crystal television receiver. It is a rear view of the state which attached the speaker to the front cabinet shown in FIG. It is a perspective view in the state where a speaker and a speaker holder were separated. It is a side view of a speaker apparatus. It is a top view of the speaker apparatus shown in FIG. It is the rear view which expanded the speaker attachment part of the front cabinet. It is the enlarged view which expanded the principal part of the speaker attachment part with the speaker attachment structure concerning this invention. It is sectional drawing seen from the side surface in the state which closed the rear cabinet.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a state in which a front cabinet and a rear cabinet of a liquid crystal television receiver are disassembled, and FIG. 2 is a rear view of a state in which speakers are attached to the front cabinet shown in FIG.

As shown in FIG. 1, a liquid crystal television receiver A includes a liquid crystal display unit 1, a rear cabinet 2 that covers the back side of the liquid crystal display unit 1, and a front cabinet 3 that covers the front side of the liquid crystal display unit 1. have. Although not shown, a stand is attached to the rear cabinet 2. Each of the front cabinet 3 and the rear cabinet 2 is a resin molded product.

  The liquid crystal display unit 1 is an image display device including a liquid crystal panel, and has a rectangular parallelepiped metal frame 10 surrounding the liquid crystal panel. The frame 10 has an image display unit on the front surface, and a wiring board PB for controlling the operation of the liquid crystal television receiver A is attached and fixed on the back surface.

  The rear cabinet 2 has a rectangular back surface, and includes a side wall 20 erected on the front side from the rectangular outer edge. In addition, a plurality of terminal holes are formed on the back surface for exposing the tips of external connection terminals (not shown) provided on the wiring board PB to the outside.

  The front cabinet 3 has a rectangular shape that is horizontally long when viewed from the front, and includes side walls 30 that are erected from the outer edge of the front to the back. A rectangular opening 31 is formed at the center of the front cabinet 3, and the liquid crystal display unit 1 is positioned and arranged so that the image display unit can be seen from the opening 31. The front cabinet 3 has a margin in the lower part, and two speaker devices Sp are attached to the left and right ends of the lower part, respectively.

  Next, the speaker device according to the present invention will be described in detail with reference to the drawings. 3 is a perspective view of the speaker and the speaker holder in a separated state, FIG. 4 is a side view of the speaker device, and FIG. 5 is a plan view of the speaker device shown in FIG.

  As shown in the figure, the speaker device Sp includes a speaker 4 and a speaker holder 5 that holds the speaker 4. The speaker 4 includes a sound output opening 40 that is an opening through which sound from the diaphragm is emitted to the outside, and a rectangular flange portion 41 that protrudes from the periphery of the sound output opening 40. The speaker device Sp is attached to the front cabinet 3 so that the speaker holder 5 is interposed between the speaker 4 and the side wall 30. The speaker 4 is arranged such that the sound output opening 40 faces the side wall 30 formed at the lower part of the front cabinet 3.

  The speaker holder 5 is integrally formed of an elastically deformable vibration-proof material such as urethane or vibration-proof rubber. As shown in FIG. 3, the speaker holder 5 is erected from a rectangular frame-shaped buffer portion 51 that comes into contact with the sound output opening 40 side (front side) of the flange portion 41, and an end edge of the long side of the buffer portion 51. The cover portion 52 and the buffer portion 51 are erected from the central portion of the short side, and the presser portion 53 that presses the short side of the flange portion 41 and the tip of the presser portion 53 are integrally formed and fixed to the front cabinet 3 with screws. And a fixed portion 54 to be provided.

  As shown in the figure, the buffer portion 51 is formed with a through window 510 through which the sound emitted from the sound output opening 40 of the speaker 4 passes. Further, bosses 511 are erected at the four corners of the buffer portion 51. The boss 511 is erected toward the speaker 4 and passes through the engagement hole 411 formed in the flange portion 41. When the boss 511 passes through the engaging hole 411, the flange portion 41 of the speaker 4 is positioned with respect to the buffer portion 51 of the speaker holder 5.

  The cover part 52 is a wall member protruding from the buffer part 51. The cover 52 has flexibility and is thin. The cover 52 is formed to protrude from the buffer 51, but can be bent with a small force. Utilizing this property, it is pressed by a presser rib, which will be described later, and the front end side turns around to the front side of the flange portion 41 and is in close contact with the flange portion 41. Thereby, sound leakage from the speaker 4 can be suppressed.

  The pressing portion 53 is a member that presses the back side of the short side portion of the flange portion 41. The presser portion 53 includes an engagement recess portion 531 with which the end portion of the flange portion 41 is engaged. As indicated by the arrows in FIG. 4, the speaker holder 5 is formed of an elastically deformable material as described above, so that the presser portion 53 can be opened and closed (rotated) around the lower portion toward the outside. As a result, it is possible to press the back side of the flange portion 41 with the presser portion 53 by opening the presser portion 53 outward, bringing the flange portion 41 into contact with the buffer portion 51 and then returning the presser portion 53. It is.

  The boss 511 penetrates the engagement hole 411 of the flange portion 41 from the front side, and the presser portion 53 presses the central portion of the short side of the flange portion 41 from the back side, so that the speaker holder 5 is connected to the flange portion 41 of the speaker 4. The short side is pinched. Since the boss 511 is formed at the four corners and the holding portion 53 is formed at both short sides, both short sides of the flange portion 41 are sandwiched between the boss 511 and the holding portion 53, and the speaker holder 5 stabilizes the speaker 4. And hold.

  The fixing portion 54 has a curved surface shape with an end opposite to the presser portion 53 open. The fixed portion 54 has a shape obtained by cutting a part of a cylinder in a direction along the central axis. A screw Sc is attached to the fixing portion 54 when the speaker holder 5 is attached to the front cabinet 3. Since the fixing portion 54 has a shape obtained by cutting a part of the cylinder, it can be deformed and attached to a narrow portion (there is no gap at the attachment position), but is not limited thereto. A cylindrical shape may be used.

  The details of the speaker mounting structure of the present invention will be described with reference to the drawings. FIG. 6 is an enlarged rear view of the speaker mounting portion of the front cabinet, FIG. 7 is an enlarged view of the main portion of the speaker mounting portion in the speaker mounting structure according to the present invention, and FIG. 8 is the rear cabinet closed. It is sectional drawing seen from the side surface in a state. In addition, in the cross-sectional view of FIG. 8, the cross section of the speaker holder and the front cabinet which are the principal parts of this invention is shown.

  As shown in FIG. 6, the speaker mounting portion 32 of the front cabinet 3 includes a screw hole 331 into which the screw Sc is screwed, a pair of screw bosses 33 protruding from the rear surface of the front cabinet 3, and the front cabinet 3. A pressing rib 34 that protrudes to the rear side and is formed in parallel with the lower side wall portion 30 and a positioning rib 35 that is formed outside the screwing boss 33 and determines the position in the left-right direction of the speaker device Sp are provided. Yes. As shown in FIG. 6, the screwing boss 33 and the positioning rib 35 are arranged close to each other. Since the fixing portion 54 has a shape with an open end, and the speaker holder 5 is formed of an elastically deformable (flexible) material, the screwing boss 33 and the positioning rib 35 are provided. Even when approaching, the fixing portion 54 can be attached to the screwing rib 35 and can be fixed with the screw Sc.

The attachment of the speaker device Sp to the speaker attachment portion 32 will be described with reference to the drawings. As shown in FIG. 7, the speaker device Sp is arranged in the speaker mounting portion 32 so that the sound output opening 40 of the speaker 4 faces the side wall 30. The fixing portion 54 is fixed to the screwing rib 33 with a screw Sc, and is held by the positioning rib 35 so that the holding portion 53 does not fall outward. Thereby, the speaker device Sp is firmly fixed to the speaker mounting portion 32. In addition, in order to stably push the end portion of the fixing portion 54, a washer may be used as the screw Sc for fixing the fixing portion 54 and the screwing rib 33, and a screw having a head with a washer is used. Also good.

  Further, although the fixing portion 54 and the screwing rib 33 are screwed adjacent to each other in the axial direction, the fixing portion 54 may be externally fitted to the screwing rib 33. At this time, the end of the fixing portion 54 may be formed so as to protrude from the tip of the screwing rib 33, and the end may be fixed by pressing the end with a screw washer (or head). Further, the fixing of the fixing portion is not limited to the screw.

  Since the pressing portion 53 is formed integrally with the fixing portion 54, the fixing portion 54 is fixed to the screwing rib 33 and the movement is restricted by the positioning rib 35, so that the pressing portion 53 is behind the flange portion 41. Hold down the side. Thereby, the buffer part 51 is pulled by the presser part 53 provided on both short sides, the buffer part 51 and the front side of the flange part 41 are in close contact, and the sound from the speaker 4 is between the speaker 4 and the speaker holder 5. Leakage from the space can be suppressed.

  As shown in FIG. 8, the speaker device Sp is pressed against the front cabinet 3 by fixing the fixing portion 54 to the screwing rib 33 with the screw Sc. A portion sandwiched between the buffer portion 51 and the cover portion 52 on the long side of the flange portion 41 is pressed between the side wall 30 and the pressing rib 34. As a result, the buffer portion 51 is pressed against the side wall 30 and the cover portion 52 is pressed against the presser rib 34 to be in close contact with the front side and the back side of the flange portion 41, respectively, thereby suppressing sound leakage. In FIG. 8, the buffer portion 51 is shown in direct contact with the side wall portion 30, but is not limited to this, and a receiving portion for receiving the buffer portion 51 is formed on the side wall portion 30. It may be. At this time, the receiving portion may be inclined forward and backward or left and right with respect to the side wall portion 30.

  The rear cabinet 2 is mounted from the rear side of the front cabinet 3 with the speaker device Sp mounted on the speaker mounting portion 32 of the front cabinet 3. At this time, similarly to the front cabinet 3, the rear cabinet 2 is formed with a pressing rib 21 parallel to the side wall 20, and the pressing rib 21 presses the cover portion 52. As a result, the buffer portion 51 facing the rear cabinet 2 is pressed against the side wall 20 and the cover portion 52 is pressed against the presser rib 21 to be in close contact with the front side and the back side of the flange portion 41, respectively, thereby suppressing sound leakage.

  Then, by pressing the rear cabinet 2 against the front cabinet 3, the flange portion 41 is pushed into the gap between the side wall 20 and the presser rib 21 while being covered with the buffer portion 51 and the cover portion 52. Similarly, on the front side, the flange portion 41 is pushed into the gap between the side wall 30 and the presser rib 34 while being covered with the buffer portion 51 and the cover portion 52.

  Thereby, since the buffer part 51 and the cover part 52 are strongly pressed by the flange part 41, a clearance gap is hard to be formed between the flange part 41, the buffer part 51, and the cover part 52, and it is hard to leak sound. In addition, since the speaker holder 5 is in close contact with the speaker 4, chatter noise between the speaker 4 and the speaker holder 5 can be suppressed. Further, since the buffer portion 51 is in close contact with the side walls 20, 30, chatter noise between the speaker holder 5 and the front cabinet 3 and the rear cabinet 2 is also suppressed.

  Furthermore, since the speaker holder 5 is formed of a material having vibration proofing properties, the speaker holder 5 has a certain degree of flexibility. The power to do is alleviated. Thereby, since the speaker 4 is pressed and held by the front cabinet 3 and the rear cabinet 2 with an appropriate force, it is possible to suppress problems such as deterioration of sound quality and generation of chatter sound due to restriction of the operation of the diaphragm. be able to.

  As described above, a speaker holder made of a soft material having vibration proofing can be used, and the speaker and the speaker holder can be firmly tightened without using a screw or other fastening tool. Thus, a speaker mounting structure that can be mounted on a cabinet can be provided. In addition, since the speaker holder itself is formed of an elastic material having vibration proofing properties, it is not necessary to attach a gasket for vibration proofing, and it is possible to reduce the number of components and to save time and labor for assembly and mounting. it can.

  In addition, in the said embodiment, what has a rectangular shape as a flange part of a speaker is described, However, It is not limited to this. For example, when an elliptical or circular flange portion is provided, the cover portion may be formed so as to follow the curve of the flange portion.

  The present invention can be used to attach a speaker to a thin television receiver.

A LCD TV receiver PB Wiring board Sp Speaker device Sc Screw 1 Liquid crystal display unit 10 Frame 2 Rear cabinet 20 Side wall 21 Pressing rib 3 Front cabinet 30 Side wall 31 Opening 32 Speaker mounting portion 33 Boss 331 Screw hole 34 Pressing rib 35 Positioning rib 4 Speaker 40 Sound output opening 41 Flange part 5 Speaker holder 51 Buffer part 511 Boss 52 Cover part 53 Holding part 54 Fixing part

Claims (7)

A speaker having a flange formed around the sound output opening;
A speaker device that is integrally formed with a vibration-proof material having flexibility and that holds the speaker, and is fixed to a cabinet of an electronic device,
The speaker holder is
A frame-shaped buffer portion that contacts the front side of the flange portion;
A boss protruding from the buffer portion and penetrating through an engagement hole formed in the flange portion;
A pair of cover parts connected to the edge part of the buffer part and facing each other;
A pair of presser portions formed in the vicinity of the boss of the buffer portion;
A fixed portion connected to the tip of the presser portion and fixed to the cabinet with a fixing screw;
The speaker is held by the speaker holder by the boss penetrating the engagement hole, the pair of cover portions coming into contact with the outside of the flange portion, and the pressing portion pressing the back side of the flange portion. A speaker device.   The speaker device according to claim 1, wherein the fixing portion is formed such that the fixing screw is disposed in a direction intersecting a protruding direction of the boss.   The speaker device according to claim 1, wherein the fixing portion has a shape with an open front end side. The speaker device according to any one of claims 1 to 3, wherein the buffer portion is in contact with a side wall provided upright from an end portion of the front cabinet, and is fixed to the front cabinet.
A screw boss that protrudes from the back of the front cabinet and has a screw hole into which the fixing screw is screwed, and a pair of positioning ribs that protrude from the back of the front cabinet and come into contact with the pressing portion of the speaker holder. Has
Mounting the speaker for pressing the back side of the flange portion by bringing the buffer portion into contact with the side wall portion and the holding portion with the positioning rib and fixing the fixing portion to the screwing rib. Construction. A presser rib that protrudes in parallel with the side wall portion from the front cabinet is provided,
5. The speaker mounting structure according to claim 4, wherein the pressing rib presses the cover portion against a back side of the flange portion when the fixing portion is fixed to the screwing rib. When the rear cabinet is attached to the front cabinet, the presser ribs formed on the rear cabinet so as to face the presser ribs are provided.
The presser rib formed in the front cabinet and the rear cabinet presses the pair of cover portions against the back side of the flange portion when the rear cabinet is attached and fixed to the front cabinet. Speaker mounting structure.   The speaker mounting structure according to any one of claims 4 to 6, wherein the electronic device is a thin television receiver.

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