JPH02154599A - Speaker fitting plate - Google Patents

Abstract

PURPOSE:To constantly fit a speaker unit on a plate material under a same condition and to guarantee optimum acoustic characteristics regardless of the strength condition and the like of a wall surface and the like by providing the plate material of a size extending over the almost entire back surface of the speaker unit and a fitting member which is provided on the plate material and supports the speaker unit in front of the plate material. CONSTITUTION:When a speaker unit A is installed, a circumferential groove part 23 is engaged with the projection part 32a of a fitting member 32 at the lower side of a plate material 31 and the projection part 33a of a fitting member of an upper side is engaged with the groove part 23 of the speaker unit A. The fitting member 32 of the lower side supports the weight of the speaker unit A and simultaneously turns to be a rotation supporting part for angle adjustment. The length adjustment of the fitting member 33 at the upper side is freely executed by loosening an adjustment bolt 45 and the speaker unit A can be inclined at the range of 5 degree or less in the direction of an arrow mark D. Thus, the speaker unit A can be constantly fitted under the same condition and the optimum characteristics can be guaranteed regardless of the condition of wall surface 41 strength and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a speaker mounting plate for mounting a subica or the like having a large-area flat diaphragm to a wall surface or other location.

[Conventional technology]

With the development of AV equipment in recent years, there is a desire for large-screen images and high-quality sound reproduction in the home, and the equipment is becoming larger. Therefore, in order to save space in the listening room, thin wall-mounted speakers are suitable.

In response to such requests, the inventors have already made it possible to reproduce rich bass sounds in a thin cabinet by making part of the back of a large-area flat diaphragm open and the other part sealed. I applied for a speaker with this design.

FIG. 7 shows the speaker mounted on a wall. In the figure, 1 is a diaphragm, 9 is a cabinet, 10 is an outer edge, 11 is an inner edge, and diaphragm 1 is a magnetic circuit 12.
It is driven by a voice coil 13 placed in the magnetic air gap. The periphery of the back of the diaphragm 1 is a sealed part 14, and the center part of the back is closed through the boat 2.
It communicates with the space on the back of 9.

The cabinet 9 is attached by connecting a mounting bracket 3 fixed to the back surface with bolts 4 and a support bracket 5 fixed to the wall surface 6. Furthermore, when the sound radiated from the boat 2 resonates in the gap 7 between the back surface of the cabinet 9 and the wall surface 6 and a standing wave is generated, it interferes with the sound wave radiated from the front surface of the diaphragm 1, causing the sound from the speaker. Since peaks and valleys occur in the pressure frequency characteristics, this is prevented by providing the sound absorbing material 8 around the gap space.

[Problem to be solved by the invention]

However, the above conventional configuration has the following problems.

■The characteristics of the speaker are affected by the sound radiated from the boat 2, so the characteristics change depending on the condition of the wall surface 6 and the way the speaker is mounted.

(2) Since the sound-absorbing material 8 is sandwiched between the cabinet 9 and the wall surface 6, it is difficult to always provide the sound-absorbing material 8 at an optimal position, and furthermore, the position may shift due to vibration etc. during use.

- If the strength of the wall surface 6 is insufficient, the mounting locations of the support fittings 5 will be limited, and the speaker cannot be installed at an arbitrary position.

■When attaching the support fittings 5 to the wall surface, it is necessary to accurately position the mounting intervals, horizontal alignment, etc. on the wall surface.

■The sound radiated from the port 2 and the vibration of the cabinet 9 are directly transmitted to the wall surface 6, causing problems such as sound leakage to the back side of the wall surface 6 and vibration of the wall surface 6.

■Placing other objects such as furniture near the speaker will prevent sound from being emitted from the back of the speaker, which will affect the speaker's characteristics.

■It is necessary to attach a threaded hole for attaching the mounting bracket 3 to the back of the speaker. Furthermore, this screw hole must be sealed internally, which complicates the structure of the cavity 7.

The purpose of this invention is to solve the above-mentioned problems, to ensure the best acoustic characteristics no matter what kind of wall or other surface the speaker is mounted on, and to avoid mounting the speaker on walls etc. that are not strong enough. To provide a speaker mounting plate that can achieve this and also has sound and vibration damping effects.

The inventions of claims (2) to (4) further have the following objects.

In other words, the invention of claim (2) is characterized in that when furniture, etc. is placed adjacent to the speaker, sound can be radiated without being affected by the furniture, etc. Claim (3) The invention of claim (4) is characterized in that the speaker can be installed without special processing.The invention of claim (4) is characterized in that the sound-absorbing material can be installed optimally when the sound-absorbing material is provided. The purpose is to

[Means to solve the problem]

The speaker mounting plate of the present invention includes a plate material and a mounting member provided on the plate material to support the speaker in front of the plate material. The plate material is large enough to cover almost the entire back surface of the speaker.

In the speaker mounting plate according to claim (2), the plate material includes a bottom plate portion larger than the back surface of the speaker, and a side plate portion extending from the periphery of the bottom plate portion to the periphery of the speaker. A gap space is provided between the side plate portion and the speaker.

In the speaker mounting plate of claim (3), the mounting member is provided with a protrusion that engages with a groove provided on the outer periphery of the speaker.

In the speaker mounting plate according to claim (4), a sound-absorbing material that is in contact with the back surface of the speaker is attached to the peripheral edge of the front surface of the plate material.

[Effect]

According to the configuration of the present invention, a plate material covering almost the entire rear surface of the speaker is attached to a wall surface, etc., and the speaker is attached in front of this plate material, so that the sound radiated to the rear surface of the speaker is transmitted through the space between the speaker and the plate material. resonate. The positional relationship between the speaker and the plate can be constant regardless of the condition of the wall surface or the like. Therefore, the acoustic characteristics are not affected by the condition of the wall surface or the like or the state of attachment to the wall surface, etc., and by optimally designing the speaker placement ζJ position with respect to the plate material, optimal acoustic characteristics are always guaranteed. Moreover, since the plate material is interposed, sound insulation and vibration damping effects on the wall surface etc. can be obtained.

In the speaker mounting plate of claim (2), since the plate material is provided with a side plate portion extending around the speaker through the gap space, sound is radiated from the back surface of the speaker from the gap space inside the side plate. . Therefore, sound is radiated from the back side without being obstructed by furniture or the like adjacent to the speaker.

The speaker mounting plate of claim (3) supports the speaker by securing the protrusion of the mounting member to the groove on the outer surface of the speaker, so that it can be installed on a wall surface etc. without drilling holes or the like in the speaker. can do.

In the speaker mounting plate of claim (4), since the sound absorbing material is attached to the plate material in advance, the mounting position does not change depending on the conditions of the wall surface, etc. (the sound absorbing material can be attached at the optimum position).

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 shows the speaker A mounted on a wall surface 41 using the speaker mounting plate B of this embodiment.

FIG. 3 is a perspective view of the speaker. In the same figure, ■
2 is a large-area planar diaphragm; 22 is a frame of a cabinet 26; a groove 23 is formed on the outer periphery of the frame 22;

FIG. 4 is a sectional view of the speaker. The diaphragm 1 is attached to a cabinet 26 at the outer edge 0 and the inner edge 11, and the cabinet 26 has a boat 2 in which the central part of the back surface of the diaphragm 1 is open to the rear. The cabinet 26 is formed of a frame 22, a back plate 25, and an inner plate 27. The frame 22 is a tubular member made of extruded aluminum material, which is joined by four pieces.
A cabinet 26 with a thickness of 100 mm is constructed by sealing the back side with a back plate 25 made of wood with a thickness of 9 mm. The groove portion 23 on the outer periphery of the frame 22 is formed in the shape of a dovetail groove with a T-shaped cross section, and its opening width is 3 mm.

FIG. 2 is a perspective view of the speaker mounting plate B. The plate material 31 is made of plywood with a thickness of 20 mm, which is approximately equal to the size of the back surface of the speaker, and five vertical rows of mounting holes 37 for fixing to the wall surface 41 or the like are provided on the left and right sides.

Five mounting holes 37 are provided in each row at intervals of 100 mm. Four sound absorbing materials 34 are arranged around the periphery of the plate material 31,
Also, there are first holes for attaching to the speaker at the bottom two corners and the second and second corners.
The mounting member 32 and the second mounting member 33 are respectively mounted. The mounting members 32, 33 are made of metal. The sound absorbing material 34 is made of glass wool wrapped in a net, etc.
It has a thickness such that when the speaker A is attached, it is held in contact with the back surface of the speaker A and the plate tA'31. Sound absorbing material 3
4 is fixed with a mounting hand 35 at a position where the characteristics of the speaker A are optimized.

The mounting member 32 on the lower side of the plate 3 is used to support the weight of the speaker, and is formed in an abbreviated shape and has a protrusion 32a at its tip that engages with the groove 23 of the speaker A. The mounting member 33 on the upper side of the plate 31 is for adjusting the angle of the speaker A, and as shown in FIG. 1, it has a fixing piece 33a,
It consists of a movable piece 33b which is connected to the fixed piece 33a with an adjustment bolt 45 so that its length can be freely adjusted. The movable piece 33b has a hook-shaped protrusion 33c that engages with the groove 23 of the speaker A.
is formed at the tip. A cushioning rubber 44 is attached to a portion of the mounting member 33 that contacts the back surface of the speaker A.

6W1. explains how to use and function of the speaker mounting plate B with the above configuration. The material 31 is fixed to a wall surface 41 or the like using mounting screws 42 such as wood screws passing through the mounting holes 37. In the case of a wall surface with insufficient strength, if there is a stud 36 on the back side as shown in FIG. 2, select a mounting hole 37 where the stud 36 is located and screw in the mounting screw 42.

When installing speaker A, insert the groove 23 on the outer periphery into the plate material 3.
1, and the projection 33a of the upper mounting member 33 is engaged with the groove 23 of the speaker A. The lower mounting member 32 supports the weight of the speaker and serves as a rotational fulcrum when adjusting the angle. The length of the upper mounting member 33 can be adjusted by loosening the adjustment bolt 45, and the speaker A can be tilted forward within a range of 5 degrees in the direction of the arrow. A cushioning rubber 44 is provided on the mounting member 33 at a portion that corresponds to the back surface of the speaker A, so that the speaker A is held stationary and vibrations of the speaker A are prevented from being transmitted to the plate material 31.

When the speaker A is turned on, the sound emitted from the boat 2 is insulated by the plate material 31 and is not directly transmitted to the wall surface 41. In addition, the sound absorbing material 34 suppresses the generation of standing waves in the gap space 43 between the back surface of the speaker A and the plate material 31, and eliminates disturbances in sound pressure frequency characteristics due to interference with sound radiated from the front surface of the speaker. be able to. The appropriate position of the sound absorbing material 34 is determined by the shape of the back surface of the speaker A, the position of the photo 2, etc.

According to the speaker mounting plate B of this embodiment, the following advantages can be obtained.

■Since the speaker A can always be installed under the same conditions, optimal characteristics can be guaranteed regardless of conditions such as the strength of the wall surface 41.

■Since the sound-absorbing material 34 is pre-installed at the optimal position on the plate material 31, the acoustic characteristics will not change depending on the first condition, and the position of the sound-absorbing material 34 will not shift due to vibrations to the speaker during use. .

(2) Even when the strength of the wall surface 41 is insufficient, it can be fixed to the inner studs 36, horizontal beams, etc., and the mounting position is not limited.

(2) Sound radiated from the back surface of the speaker A is not directly transmitted to the wall surface 41, and sound leakage to the back surface of the wall surface 41 and vibration of the wall surface 41 can be prevented.

■Since the protrusion 33c of the mounting member 33 can be inserted into the groove 23 formed on the speaker A and held, the wall surface 41
Can be installed on.

(2) Since the lower end of the speaker A is not fixedly supported, but is supported by the mounting member 32 that engages with the groove 23, the angle of the speaker can be adjusted with a simple structure.

(2) Since the mounting members 32 and 33 are attached to the plate material 31 in advance, there is no need to position and attach the four mounting members 32 and 33 to the wall surface 41, making the mounting work easy.

In the above embodiment, the plate material 31 is made of plywood with a thickness of 20 mm, but the plate material 31 may be made of a metal material such as a damping steel plate or a sound insulating plate having a multilayer structure. The size of the plate material 31 may be slightly smaller than the back surface of the speaker A.

Further, in the above embodiment, the mounting member 33 for adjusting the mounting angle of the speaker A is engaged with the groove 23 on the top surface of the speaker A, but it may be engaged with the groove 23 on the side surface of the speaker A. In that case, speaker A can be tilted either upward or downward.

5 and 6 show other embodiments of the invention. In this example, the plate member 61 is formed into a tray shape and includes a bottom plate portion 61a that is larger than the back surface of the speaker A, and a side plate portion 61b extending from the periphery of the bottom plate portion 61a and located on the outer periphery of the speaker A.

The plate material 61 is made of fiber-reinforced plastic or the like, and the bottom plate part 6
1a and the side plate portion 61b are integrally formed. Moreover, the bottom plate part 61a and the side plate part 61b are continuous on a curved surface. The plate material 61 secures a gap space 63 with a width of 50 mm on the top, bottom, left and right sides as well as the space on the back side of the speaker A.

In this configuration, the sound radiation from the back of speaker A is
This is done from the gap space 63 inside the side plate portion 61b. Therefore, even if another object such as furniture is placed adjacent to speaker A, the sound emission from the rear surface of speaker A is not obstructed, and the acoustic characteristics of speaker A are guaranteed. The connecting portion between the bottom plate part 61a and the side plate part 61b is a curved surface, which prevents sound distortion due to the generation of vortices. A net 62 is provided between the front surface of the speaker A and the front end of the plate 61, which prevents dust from entering the inside. The net 62 is cloth.

Made of metal, plastic, etc.

In this embodiment, the sound absorbing material 34 is arranged between the back surface of the speaker A and the bottom plate part 61a of the plate member 61, but it may be arranged between the speaker A and the side plate part 61b.

Further, this tray-shaped plate material 61 can also be placed embedded in the wall surface 41.

In addition, in the above embodiment, the speaker 8 used was a metal frame 22 having a groove 23 on the outer periphery.
In the case of a speaker having an ordinary wooden cabinet, it may be fixed to the mounting member with wood screws or the like, and the structure of the mounting member is of course not limited to the mounting members 32 and 33 of these embodiments.

〔Effect of the invention〕

The speaker mounting plate of the present invention includes a plate material that is large enough to cover almost the entire back surface of the speaker, and a mounting member that is provided on this plate material and supports the speaker in front of the plate material, so that it has the following effects. is obtained.

■Speakers can always be attached to the board under the same conditions, so optimal acoustic characteristics can be guaranteed regardless of the strength conditions of the wall surface, etc.

■When installing sound absorbing material on the back of the speaker, it is easy to optimize the installation position of the sound absorbing material.

■Since the board material is wide, you can freely choose the mounting position on the wall, etc., so even if the wall is not strong enough,
It can be firmly fixed to studs, crosspieces, etc. by attaching Lj.

■The sound emitted from the back of the speaker does not directly reach the wall, which prevents sound leakage to the back of the wall and vibration of the wall.

In the speaker mounting plate of claim (2), since the plate material is provided with a side plate portion that extends around the speaker through the gap space, even if furniture or the like is placed adjacent to the speaker, sound from the back of the speaker is not emitted. Radiation is carried out without being obstructed by adjacent furniture, etc.

The speaker mounting plate of claim (3) supports the speaker by engaging the protrusion of the mounting member with the groove on the outer surface of the speaker, so it can be attached to a wall surface etc. without having to drill holes or perform any special processing on the speaker. Can be installed.

In the speaker mounting plate of claim (4), since the sound absorbing material is attached to the plate material in advance, the mounting position does not change depending on the conditions of the wall surface, etc., and the sound absorbing material can be attached at an optimal position. Therefore, optimal acoustic characteristics can be obtained. Moreover, there is an effect that the sound absorbing material does not shift due to speaker vibrations or the like during use.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a speaker mounted according to an embodiment of the present invention, Fig. 2 is a perspective view of the speaker mounting plate, Fig. 3 is a perspective view of the speaker, and Fig. 4 is a cross-sectional view of the speaker. FIG. 5 is a sectional view of another embodiment of the present invention,
FIG. 6 is a perspective view thereof, and FIG. 7 is a sectional view of the conventional example. A...Speaker, B...Speaker mounting plate, 1...
Vibration plate, 2... Boat, 23... Groove, 31...
Plate material, 3233...Mounting member, 32a, 33c...
Projection, 34... Sound absorbing material, 20... Cabinet,
61...Plate material, 61a...Bottom plate part, 61b...Side plate part A・-Shi°-KaB---, (r-month Part 2--n, itto 31--1 Ukiashana 32--Issoku Ewa 32a--Issaki Kiku 33a--Issho Kaichichi 33cm-Isken ni Shutari--Sukan Broadcasting 41- ・Wall surface 45--Ichikin■Advice'root

Claims (4)

[Claims] (1) A speaker mounting plate for mounting a speaker with a part of the back surface of the diaphragm open to the back surface of the cabinet, the plate material having a size that covers almost the entire back surface of the cabinet;
A speaker mounting plate comprising: a mounting member provided on the plate material to support the speaker in front of the plate material. (2) a bottom plate portion whose plate material is larger than the back surface of the speaker;
The speaker mounting plate according to claim 1, further comprising a side plate portion extending from the periphery of the bottom plate portion and positioned around the speaker with a gap space therebetween. (3) The speaker mounting plate according to claim (1) or claim (2), wherein the mounting member has a protrusion that engages with a groove provided on the outer periphery of the speaker. (4) The speaker mounting plate according to claim (1), claim (2), or claim (3), wherein a sound absorbing material that contacts the back surface of the speaker is attached to the peripheral edge of the front surface of the plate material.