JP2005064959A - Speaker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker device in which fine angle adjustment to a sound emitting surface can be easily performed with respect to an installation surface. <P>SOLUTION: This speaker device is provided with: speaker main bodies 2a and 2b; a cabinet 3 housing the speaker main bodies 2a and 2b and having the sound emitting surface s3 for outputting sound from the speaker main bodies 2a and 2b to the outside; a hinge member 21 to be attached to the cabinet 3; and leg members 6 the one end part of which is connected to the hinge member 21 and the other end part of which is supported on the installation surface. The angle of the sound emitting surface with respect to the installation surface can be changed by relatively turning the cabinet 3 and the leg members 6 around the hinge member 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a speaker device in which a speaker body is accommodated in a cabinet, and more specifically, by attaching a leg member so as to be rotatable with respect to the cabinet, and relatively rotating the leg member and the cabinet, The present invention relates to a speaker device that can change an angle of a sound emitting surface with respect to an installation surface.

  In recent years, it has become widespread to construct a home theater using a large screen display device and a plurality of speakers. In this case, as a display device, a large-screen thin liquid crystal display or plasma display, or a projector that projects an image on a screen tends to be used, and as a place for a center speaker arranged in the front center of the viewer However, it is impossible to secure a place on the display device, and it is necessary to place it on the floor.

  In this case, if the distance between the sound emitting surface of the center speaker and the floor surface is short, the sound may be reflected and interfered with the floor to impair gloss and sharpness. In addition, the sound emitting surface needs to be directed to the height of the listener's ear, and when the center speaker is installed on the floor surface, it is desirable that the elevation angle of the sound emitting surface can be changed to a desired angle.

  For example, Patent Document 1 discloses that the angle of the sound emitting surface with respect to the installation surface can be changed by changing the way in which the speaker device having a substantially triangular prism shape is placed.

  The state shown in FIG. 16A is a state in which the speaker device 51 is placed horizontally on the installation surface f, and the sound emitting surface s is inclined upward with respect to the installation surface f.

In the state shown in FIG. 16B, the speaker device 51 is placed vertically on the installation surface f, and the sound emitting surface s is perpendicular to the installation surface f (the sound output direction indicated by the arrow is the installation surface f). Parallel).
JP 2001-292488 A

  In the above-mentioned Patent Document 1, only two directions can be selected by changing the placement of the speaker device 51 (vertical or horizontal), and finer angle adjustment cannot be performed.

  In addition, it is conceivable to use a speaker stand with an angle adjustment function separately. In such a speaker stand, generally, when a user adjusts the elevation angle, the screw fastened with a tool such as a screwdriver is loosened. After that, it is necessary to adjust it by adjusting it to the desired elevation angle and tightening the screw. Furthermore, due to loosening of screws or forgetting to tighten, there is a risk that the sound quality may be affected by vibration of the speaker body during use and shaking with the vibration of the speaker body.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a speaker device that can easily perform fine angle adjustment of a sound emitting surface with respect to an installation surface.

  A speaker device according to the present invention includes a speaker body, a cabinet that accommodates the speaker body and outputs sound from the speaker body to the outside, a hinge member attached to the cabinet, and one end hinged A leg member connected to the member and having the other end supported on the installation surface, and the relative rotation between the cabinet and the leg member with the hinge member as a rotation center, The feature is that the angle can be changed.

  One or a plurality of speaker bodies are accommodated in the cabinet. The speaker body has a vibrating body such as cone paper, for example, and generates sound when the vibrating body vibrates. The cabinet not only has a function to protect the speaker body from dust and moisture, but also suppresses the cancellation of sound before and after the vibrating body to prevent a decrease in sound generation efficiency. Prevent leaks. Sound from the speaker body is output to the outside of the cabinet through the sound emitting surface. Accordingly, by changing the angle of the sound emitting surface with respect to the installation surface, the sound output direction of the speaker device placed on the installation surface can be changed.

  Leg members are attached to the cabinet via hinge members. The leg member is rotatable with respect to the cabinet with one end connected to the hinge member as a rotation center. The other end of the leg member is supported on the installation surface to prevent the cabinet from falling over and maintain the desired posture of the cabinet on the installation surface.

  The speaker device is not supported on the installation surface by the cabinet alone, but is supported on the installation surface so that the leg member supports the cabinet placed on the installation surface so as to be tiltable.

  And the opening angle between the lower end part of the cabinet supported on the installation surface and the other end part of the leg member can be changed by relatively rotating the cabinet and the leg member. The position of the cabinet can be changed freely. As a result, the sound emitting surface formed in the cabinet can be easily adjusted in the optimum direction for the listener to hear the sound from the speaker device.

  As an example of the configuration of the hinge member, a fixed portion fixed to the cabinet, a rotating portion fixed to one end portion of the leg member and rotatably fitted to the fixed portion, and the rotating portion fixed to the fixed portion The structure provided with the spring member pressed against is mentioned.

  The rotating part is rotatably fitted while being pressed against the fixed part by the spring member, and the frictional force acting between the rotating part and the fixed part is the resistance of the rotation of the rotating part to the fixed part. Acting as a force, the leg member can be held at a desired rotation angle. Such a configuration has a higher degree of freedom in selecting a holding angle compared to, for example, a general ratchet mechanism in which the holding angle is determined according to the engagement portion between the recess and the protrusion.

  As the spring member, a leaf spring member, a coil spring member, a disc spring member, or the like can be used.

  In addition, an insulator that suppresses the transmission of vibration from the cabinet to the installation surface is attached to the lower end of the cabinet supported on the installation surface, and the cabinet is placed on the installation surface, with the lower end of the cabinet and the installation surface If the lower end is lifted from the installation surface by the insulator interposed between the two, it is possible to prevent sound distortion and undesired reverberation and to obtain good sound quality.

  In addition, for example, if rubber is used as an insulator, the lower end of the cabinet can be prevented from slipping against the installation surface, and the output direction of the sound due to the lower end of the cabinet being displaced from the installation surface during use is avoided. it can.

  According to the speaker device of the present invention, the leg member is connected to the cabinet via the hinge member, and the sound emitting surface with respect to the installation surface is obtained by relative rotation between the cabinet and the leg member with the hinge member as a rotation center. Therefore, when the speaker device is installed, fine adjustment of the sound emitting surface can be performed by a simple operation of simply rotating the leg member attached to the cabinet.

[First Embodiment]
FIG. 1 is a perspective view of a speaker device 1 according to the present embodiment as viewed from one side surface. FIG. 2 is a front view of the speaker device 1, and FIG. 3 is a view from the bottom side.

  The speaker device 1 is rotatably attached to, for example, two speaker bodies 2a and 2b (see FIG. 2), a cabinet 3 that houses these speaker bodies 2a and 2b, and left and right side surfaces s1 and s2 of the cabinet 3. A leg member 6, a hinge member interposed in an attachment portion between the leg member 6 and the cabinet 3, and a connecting rod 7 that connects the left and right leg members 6 are provided.

  The cabinet 3 has a rectangular sound emitting surface s3, two inclined surfaces s4 and s5 that are connected to each other at the top opposite the sound emitting surface s3 behind the sound emitting surface s3, and the upper end of the sound emitting surface s3. A substantially pentagon having an upper surface s6 connecting the upper portion of the inclined surface s4, a lower surface s7 connecting the lower end of the sound emitting surface s3 and the lower end of the inclined surface s5, and left and right side surfaces s1, s2. It has a columnar shape.

  The speaker bodies 2 a and 2 b are accommodated in the cabinet 3 with the sound output direction directed to the sound emitting surface s 3 of the cabinet 3. A net 4 is attached to the sound emitting surface s3 of the cabinet 3 to protect the internal speaker bodies 2a and 2b from dust and the like. The sound output from the speaker main bodies 2a and 2b passes through the net 4 and is output to the front of the sound emitting surface s3.

  A leg member mounting portion 11 shown in FIG. 5 is formed on the side surface s1 of the cabinet 3. A similar leg member mounting portion 11 is also formed on the opposite side surface s2 not shown in FIG.

  The leg member attaching portion 11 is composed of a concave portion 12 that is recessed toward the opposite side surface s2 and a cylindrical portion 13 that projects from the bottom surface of the concave portion 12. A through hole 14 is formed in the center of the bottom surface of the cylindrical portion 13, and a pair of arcuate members 15 are provided on the bottom surface of the cylindrical portion 13 so as to sandwich the through hole 14. The arcuate member 15 has its arc-shaped side face along the inner peripheral surface of the cylindrical portion 13, and the rectangular planar portions 15a are opposed to each other. As will be described later, these arcuate members 15 function as anti-rotation members for restricting the fixing portion of the hinge member fitted into the cylindrical portion 13 from rotating as the leg member 6 rotates.

  Next, the hinge member 21 will be described with reference to FIGS. 7 is a top view of the hinge member 21, FIG. 8 is a side view, and FIG. 9 is a bottom view.

  The hinge member 21 includes a friction plate 23, a rotation portion 24, a friction plate 25, a leaf spring member 26, and a cap, which are sequentially stacked on the fixing portion 22 fitted into the cylindrical portion 13 and the upper end portion side of the fixing portion 22. 27.

  The fixed portion 22 has a substantially cylindrical shape, and a shaft portion 28 projects from the upper end portion thereof. A screw hole 29 that opens to the bottom surface is formed inside the fixed portion 22. Further, a part of the peripheral surface on the lower end side of the fixed portion 22 is notched, and a pair of plane portions 30 facing each other with the screw hole 29 interposed therebetween is formed.

  A friction plate 23, a rotating portion 24, a friction plate 25, a leaf spring member 26, and a cap 27 are fitted on the shaft portion 28 of the fixed portion 22.

  The friction plate 23 has a bent portion 23 a bent downward, and the bent portion 23 a is engaged with a concave groove 22 a formed on the peripheral surface of the upper end portion of the fixed portion 22. Therefore, the friction plate 23 does not rotate around the shaft portion 28 with respect to the fixed portion 22.

  On the friction plate 23, a plate-like rotating portion 24 is overlaid. The rotating part 24 has a pair of overhanging parts 31 projecting radially outward of the fixed part 22, and each overhanging part 31 is formed with a screw hole 31 a penetrating the overhanging part 31. . A friction plate 25 is overlaid on the rotating portion 24. Therefore, the rotating part 24 is sandwiched between the two friction plates 23 and 25.

  The friction plate 25 has a bent portion 25 a bent downward, and the bent portion 25 a is engaged with a concave groove 24 a formed on the peripheral surface of the rotating portion 24. Therefore, when the rotating portion 24 is rotated around the shaft portion 28 of the fixed portion 22, the friction plate 25 is also rotated around the shaft portion 28 integrally with the rotating portion 24.

  On the friction plate 25, a leaf spring member 26 that has been subjected to drawing is overlaid, and on the leaf spring member 26, a cap 27 is overlaid.

  The fixed portion 22, the shaft portion 28, the rotating portion 24, the leaf spring member 26, and the cap 27 are made of, for example, stainless steel, and the two friction plates 23, 25 are made of, for example, phosphor bronze.

  A portion of the shaft portion 28 that protrudes from the upper surface of the cap 27 is caulked. As a result, the leaf spring member 26, the friction plate 25, the rotating portion 24, and the friction plate 23 are narrowly pressed between the lower surface of the cap 27 and the upper end portion of the fixed portion 22.

  The leaf spring member 26 is elastically deformed to exert an elastic restoring force in the axial direction, and the rotating portion 24 is pressed against the upper and lower friction plates 25 and 23 with a large frictional force by the elastic restoring force. This frictional force acts as a resistance force against the rotation of the rotating portion 24 around the shaft portion 28, and the rotating portion 24 can be held at a desired rotating position.

  By adjusting the material, thickness, drawing depth, etc. of the leaf spring member 26, the pressure contact force between the friction plates 25, 23 and the rotating portion 24, that is, the friction force between them can be adjusted.

  The fixing portion 22 of the hinge member 21 is fitted into the cylindrical portion 13 shown in FIG. Specifically, the screw hole 29 opened on the bottom surface of the fixing portion 22 is aligned with the through hole 14 on the bottom surface of the cylindrical portion 13, and the flat surface portion 30 formed on the side surface on the lower end side of the fixing portion 22 is It fits along the flat surface portion 15a of the arcuate member 15 provided on the bottom surface of the tube portion 13.

  The upper end side including the rotating part 24 in the hinge member 21 protrudes from the cylindrical part 13 as shown in FIG.

  Then, the fixing portion 22 of the hinge member 21 is fixed to the side surface s <b> 1 of the cabinet 3 by screwing a screw into the screw hole 29 of the fixing portion 22 from the back side of the bottom surface of the cylindrical portion 13. The flat portion 30 of the fixed portion 22 is disposed so as to face the flat portion 15 a of the arcuate member 15, so that the rotation of the fixed portion 22 in the cylindrical portion 13 is prevented.

  One end of the leg member 6 shown in FIGS. 10 and 11 is attached to the rotating portion 24 of the hinge member 21. On the inner side surface of the leg member 6, a protruding portion 32 disposed in the recess 12 formed on the side surface s <b> 1 of the cabinet 3 described above is formed at one end portion, and the end portion of the connecting rod 7 is formed at the other end portion. A cylindrical portion 33 to be fitted is formed.

  As shown in FIG. 11, the protruding portion 32 is formed with a concave portion 34 similar to the planar shape of the rotating portion 24. The planar dimension of the recess 34 is larger than the planar dimension of the rotating part 24. A circular recess 35 is formed at the center of the bottom surface of the recess 34, and a pair of through holes 36 are formed so as to sandwich the recess 35.

  The concave portion 34 formed in the protruding portion 32 of the leg member 6 is put on the hinge member 21 (see FIG. 6) protruding from the cylindrical portion 13 provided on the side surface s1 of the cabinet 3. At this time, the through hole 36 on the leg member 6 side shown in FIG. 11 is aligned with the screw hole 31 a formed in the overhanging portion 31 of the rotating portion 24. Further, the friction plate 25, the leaf spring member 26, and the cap 27 protruding from the upper surface of the rotating portion 24 enter the recess 35 (see FIG. 11).

  Then, by screwing a screw from the back side of the through hole 36 shown in FIG. 11 into the screw hole 31 a of the rotating part 24 through the through hole 36, one end of the leg member 6 is fixed to the rotating part 24. The Since the rotation part 24 is rotatable around the shaft part 28 of the fixing part 22 fixed to the side surface s1 of the cabinet 3, the leg member 6 having one end part fixed to the rotation part 24 has one end part thereof. It becomes possible to rotate with respect to the cabinet 3 around the center.

  The hinge member 21 and the leg member 6 described above are respectively attached to the left and right side surfaces s1, s2 of the cabinet 3, and the left and right leg members 6 are connected by a connecting rod 7 as shown in FIG. The connecting rod 7 is hollow as shown in FIG. 5, and a cylindrical portion 33 projecting from the inner surface of the other end of the leg member 6 shown in FIG. 10 is fitted into the hollow portion 7a. The left and right leg members 6 are connected by a connecting rod 7 with the same rotation angle with respect to the cabinet 3.

  As shown in FIG. 3, an insulator 17 is attached to the lower surface s <b> 7 that is the lower end portion of the cabinet 3. The insulator 17 is attached to the left and right end positions, for example. Furthermore, an insulator 18 is also attached to the back surface of the other end of each leg member 6.

  The insulators 17 and 18 are made of, for example, a rubber-based material such as urethane or poron (trade name), or a material having a vibration absorbing function such as felt.

  The speaker device 1 is supported on the installation surface by the lower surface s7 of the cabinet 3 located closer to the front (sound emitting surface s3) than the attachment position of the hinge member 21 and the other end of the leg member 6. The insulator 17 described above causes the lower surface s7 of the cabinet 3 to float from the installation surface f as shown in FIG. 2, and the other end of the leg member 6 also floats from the installation surface f. Therefore, the speaker device 1 is supported on the installation surface with four-point support by the four insulators 17 and 18. Further, the cabinet 3 is in a state where the two inclined surfaces s4 and s5 extending rearward and the top portion to which the inclined surfaces s4 and s5 are connected are floated from the installation surface.

  In general, when sound is emitted from the speaker main bodies 2a and 2b, not only the vibrating bodies of the speaker main bodies 2a and 2b are vibrating, but also the entire cabinet 3 is vibrated. This can also be said to contribute to the sound formation of the speaker device 1 by causing the cabinet 3 to resonate to some extent. Or

  In the present embodiment, as described above, by interposing the insulator 17 between the installation surface and the lower surface s7 of the cabinet 3, transmission of vibration from the cabinet 3 to the installation surface can be suppressed and good sound quality can be maintained. Similarly, since the insulator 18 is also interposed between the leg member 6 and the installation surface, it is possible to suppress the vibration from the cabinet 3 from being transmitted to the installation surface via the leg member 6.

  Furthermore, the insulators 17 and 18 also serve to prevent slipping of the lower surface s7 of the cabinet 3 relative to the installation surface or the other end of the leg member 6. Thereby, the distance between the lower surface s7 of the cabinet 3 and the other end of the leg member 6 undesirably increases due to the weight of the speaker device 1, and the angle of the sound emitting surface s3 with respect to the installation surface is shifted. Can be prevented.

  The speaker device 1 configured as described above is applied to, for example, a speaker system for a home theater shown in FIG.

  This speaker system includes left and right front speakers 41a and 41b arranged on the left and right of a display device 40 such as a television device, rear speakers 42a and 42b arranged on the left and right behind the viewing point, and a display device 40 below. 5 is a 5.1 channel system including the above-described speaker device 1 and the subwoofer 43.

  The front speakers 41a and 41b and the rear speakers 42a and 42b are mainly responsible for sound effects and environmental sounds, and create a movement of the front and rear, left and right sounds and a sense of spatial spread throughout the room. The subwoofer 43 in charge of heavy bass may be placed anywhere because the sound has no direction.

  The speaker device 1 is called a so-called center speaker, and is often in charge of music and dialogue. The speaker device 1 is configured such that the sound emitting surface s3 faces the ear of a listener (for example, a listener sitting on the sofa 44) in front of the display device 40.

  The installation angle of the speaker device 1 can be adjusted by a simple operation by simply rotating the leg member 6 with respect to the cabinet 3. By generating torque around one end portion of the leg member 6 attached to the side surfaces s1 and s2 of the cabinet 3 via the hinge member 21, the one end portion of the leg member 6 is fixed to the one end portion. Together with the rotating part 24 of the member 21, it rotates around the shaft part 28 of the fixing part 22 of the hinge member 21 fixed to the cabinet 3.

  As a result, the leg member 6 rotates around one end portion attached to the cabinet 3, and by this rotation, as shown in FIGS. 4A and 4B, the leg member 6 is supported on the installation surface. The distance between the end and the lower surface s7 which is the lower end of the cabinet 3 can be adjusted freely, and the inclination angle of the sound emitting surface s3 with respect to the installation surface can be adjusted freely.

  As shown in FIG. 8, the rotating portion 24 is pressed against the friction plate 23 on the fixed portion 22 by the leaf spring member 26, so that a large frictional force is generated between the rotating portion 24 and the friction plate 23. This frictional force acts as a resistance force against the rotation of the rotation unit 24, and the rotation unit 24 can be held at a desired rotation angle. Unless the torque resisting this frictional force is applied to the leg member 6, the rotating portion 24 does not rotate. Therefore, the angle of the leg member 6 once set can be stably held during use.

  The leg member 6 has a lever shape that extends from one end connected to the hinge member 21 to the other end supported on the installation surface. The leg member 6 can be rotated around its one end against the frictional force. And if the rotational force given to the leg member 6 is cancelled | released, the leg member 6 can be hold | maintained in the position at any rotation angle with the said friction force.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same component as the said 1st Embodiment, and the detailed description is abbreviate | omitted.

  In this embodiment, the hinge member is provided with a ratchet mechanism as shown in FIG. That is, a groove 60a having a V-shaped cross section is formed on the inner peripheral surface of a cylindrical fixing portion 60 fixed to the cabinet 3, and a rotation fixed to one end portion of the leg member 6 with respect to the groove 60a. By engaging a plurality of pins 63 provided on the outer peripheral surface of the moving portion 61 and biased radially outward by the spring 62, the leg member 6 is positioned with respect to the cabinet 3 at a desired rotation angle. Can hold.

  When turning force is applied to the rotating portion 61, the pin 63 is pressed and contracted inward of the rotating portion 61 against the spring force while abutting against the inclined surface of the groove 60a, and moves to the adjacent groove 60a. The turning portion 61 is allowed to turn.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the same component as the said 1st Embodiment, and the detailed description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 15, a part of a rotating part 66 fixed to the leg member 6 is rotatably fitted inside a cylindrical fixing part 65 fixed to the cabinet 3. ing. In order to hold the leg member 6 at a desired rotation angle, the tip of the shaft portion 68 is turned around the rotation portion 66 in the fixing portion 65 by turning the knob portion 67 of the screw 69 screwed to the fixing portion 65. The rotating portion 66 is pressed against the inner wall surface of the fixed portion 65.

  Thereby, rotation with respect to the fixing | fixed part 65 of the rotation part 66 is blocked | prevented, and the leg member 6 is hold | maintained with a desired rotation angle. In order to rotate the rotating portion 66, the screw 69 may be loosened by turning the knob portion 67.

  As mentioned above, although embodiment of this invention was described, of course, this invention is not limited to this, A various deformation | transformation is possible based on the technical idea of this invention.

  The number of the leg members 6 is not limited to two, but may be one on one side, or a third leg member may be provided between the leg members 6 on the left and right ends. Of course, four or more may be provided.

  Further, as shown in FIG. 13, the left and right leg members 6 may be independently rotatable without providing the connecting rod 7. In this case, when the installation surface is inclined with respect to the longitudinal direction of the speaker device 1, the rotation angle of the left and right leg members 6 is independently adjusted to make the speaker device 1 different. It becomes possible to make it horizontal.

  Further, the leg member 6 may support the cabinet 3 at an angle in which the other end is positioned on the front side of the sound emitting surface s3.

1 is a perspective view of a speaker device according to an embodiment of the present invention. It is a front view of the speaker device. It is the figure which looked at the speaker apparatus from the bottom side. It is a perspective view which shows two speaker apparatuses installed with a different installation angle. It is a perspective view of the state which removed the hinge member and leg member of the left side in the speaker apparatus. FIG. 6 is a perspective view of a state in which a hinge member is fitted in the cylindrical portion shown in FIG. 5. It is a top view of a hinge member. It is a side view of a hinge member. It is a bottom view of a hinge member. It is a front view of a leg member. It is a side view of a leg member. It is a layout diagram of a home theater system to which the speaker device according to the present embodiment is applied. It is a perspective view of the speaker apparatus by a modification. It is principal part sectional drawing of the hinge member which concerns on 2nd Embodiment. It is principal part sectional drawing of the hinge member which concerns on 3rd Embodiment. It is a schematic diagram which shows the difference in the output direction of the sound by the difference in the placing method of the speaker apparatus of a prior art example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Speaker apparatus, 2a, 2b ... Speaker main body, 3 ... Cabinet, 6 ... Leg member, 17 ... Insulator, 18 ... Insulator, 21 ... Hinge member, 22 ... Fixing part, 24 ... Turning part, 26 ... Leaf spring member , 28: Shaft, s3: Sound emitting surface.

Claims (3)

A speaker body;
A cabinet having a sound emitting surface that accommodates the speaker body and outputs sound from the speaker body to the outside;
A hinge member attached to the cabinet;
A leg member having one end connected to the hinge member and the other end supported on the installation surface;
An angle of the sound emitting surface with respect to the installation surface can be changed by relative rotation between the cabinet and the leg member with the hinge member as a rotation center. The hinge member is
A fixing part fixed to the cabinet;
A rotating portion fixed to the one end of the leg member and rotatably fitted to the fixed portion;
The speaker device according to claim 1, further comprising a spring member that presses the rotating portion against the fixed portion. An insulator that suppresses transmission of vibration from the cabinet to the installation surface is attached to a lower end portion of the cabinet supported on the installation surface,
The speaker device according to claim 1, wherein the insulator is interposed between the lower end portion and the installation surface, and the lower end portion is in a state of floating from the installation surface.

Images