JPH08289393A - Resin frame for speaker - Google Patents

Abstract

PURPOSE: To provide the resin frame for speaker which prevents oscillation of a speaker from being directly transmitted to a cabinet at the time of attaching the speaker to the cabinet. CONSTITUTION: A frame main body 10 to which a magnetic circuit and an oscillation system can be set by synthetic resin materials is formed. A frame attaching part 13 which should be fixed to a boss 17 for speaker attachment provided on a cabinet 16 by a screw is provided in the outer peripheral edge of the frame main body 10 with an elastic coupling member 12 between them, thus constituting the resin frame for speaker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame used for various speakers, and more particularly to a speaker frame made of synthetic resin.

[0002]

2. Description of the Related Art For example, in a television receiver, due to a difference in strength depending on the size of a shadow mask arranged in a cathode ray tube, vibration of a speaker is transmitted to the shadow mask through a cabinet as a medium and adversely affects an image. It has been pointed out that it may affect them. for that reason,
As shown in FIG. 5, when mounting the speaker 1 to the cabinet 3, the outer peripheral edge portion of the frame 2 is formed in a predetermined shape so that the speaker 1 can be mounted in a state of being floated on the cabinet 3. The outer peripheral edge portion of the frame 2 is fixed to the speaker mounting boss 4 of the cabinet 3 with screws 6 via cushioning materials 5 and 5. In addition, reference numeral 7 in the drawing denotes a seal material filling the space between the cabinet 3 and the frame 2 of the speaker 1.

[0003]

In a television receiver, a cushion material made of rubber or urethane is used to prevent the vibration of the speaker from being transmitted to the shadow mask through the cabinet and affecting the image. Since the conventional means for floating and attaching to the speaker cabinet needs to hold the outer peripheral edge portion of the speaker in a sandwich shape by the cushion material, the attaching work is extremely troublesome. Further, since a cushion material is used to float the speaker with respect to the cabinet, the number of parts is increased, which leads to an increase in cost of the television receiver.

On the other hand, when mounting a speaker on a cabinet, the speaker is screwed to a boss for mounting the speaker protruding on the back surface of the cabinet as shown in FIG. Since it is carried out at four locations, mounting the speaker on the cabinet is complicated, and there is a problem in terms of the production efficiency of the television receiver.

In view of the above circumstances, the first object of the present invention is to attach a speaker to a cabinet very easily and easily so that the vibration of the speaker is not transmitted to the cabinet when the speaker is attached to the cabinet. It is to provide a resin frame for a speaker.

A second object of the present invention is to provide a speaker resin frame which can be mounted on a cabinet without using screws when mounting the speaker on the cabinet.

In order to achieve the above-mentioned object, the speaker resin frame of the present invention forms a frame main body on which a magnetic circuit and a vibration system can be mounted with a synthetic resin material, and at the outer peripheral edge of the frame main body. The present invention is characterized in that a frame attachment portion for screwing to a speaker attachment boss provided in a cabinet is provided via an elastic coupling member.

Another speaker resin frame of the present invention forms a frame main body on which a magnetic circuit and a vibration system can be mounted with a synthetic resin material, and
A boss provided on the cabinet can be inserted into the outer peripheral edge of the frame main body, and a frame attaching portion made of a frame member provided with an engaging projection that comes into pressure contact with the outer peripheral portion of the inserted boss is provided with an elastic coupling member. It is characterized by being provided through.

More specifically, the speaker resin frame of the present invention forms a frame main body on which a magnetic circuit and a vibration system can be mounted with a synthetic resin material, and a plate is formed on the outer peripheral edge of the frame main body. A pair of notches are formed on one side wall of a frame member made of a strip from the upper edge toward the lower edge to form an elastic piece, and the speaker is mounted inside the frame member inside the frame member. It is characterized in that a frame mounting portion provided with an engaging projection that comes into pressure contact with the outer peripheral portion of the boss for use is provided via an elastic coupling member.

In the present invention, there is no special limitation on the synthetic resin forming the frame main body, the frame mounting portion and the elastic coupling member, and in view of dimensional stability and workability, A
It is preferable to use BS resin, vinyl chloride resin, polyethylene resin or polypropylene resin.

The frame mounting portion provided on the outer peripheral edge of the frame main body via the elastic coupling member is also made of the same synthetic resin material as that of the frame main body, and the elastic coupling member prevents vibration of the speaker. From the viewpoint of making it most difficult to transfer to a cabinet, an inverted U-shaped cross section is preferable. At this time, the mounting height of the frame mounting portion with respect to the frame main body can be freely changed by shortening or lengthening one of the legs of the inverted U-shaped elastic coupling member.

Also, the frame attachment portion and the frame main body may be connected to each other by one of these elastic connecting members, particularly an inverted U-shaped elastic connecting member, but they may be connected at a plurality of positions. Absorption by changing the
It is preferable because the frequency to be relaxed is dispersed and spreads over a wide range.

The frame mounting portion is basically formed with a screw hole for inserting a screw into a boss provided on the back surface of the cabinet. For example, the boss provided in the cabinet is inserted. The frame mounting portion is composed of a cylindrical frame member provided with an elastic piece having an engaging protrusion that is in pressure contact with the outer peripheral portion of the boss, and the frame mounting portion is mainly formed on the frame through the elastic coupling member. May be attached.

Alternatively, a frame member is formed by using a plate-shaped plate so that the frame mounting portion has a rectangular flat surface and a side surface portion has a predetermined height, and one side wall (longitudinal side wall constituting the frame member ( A pair of cutouts are provided in the plate-like body from the upper edge toward the lower edge to form a plate-like elastic piece, and an engaging protrusion for press-contacting a boss formed in the cabinet is formed inside the elastic piece. This allows the speaker to be attached to the cabinet without the use of screws.

[0015]

In the speaker resin frame of the present invention, the frame mounting portion is connected to the outer peripheral edge of the frame main body for mounting the magnetic circuit and the vibration system via the elastic connecting member, so that even if the speaker vibrates, Vibrations are not transmitted to the cabinet.

Further, the frame mounting portion is formed with a pair of cuts on one side wall from the upper edge toward the lower edge to form an elastic piece, and a cabinet inserted into the frame member inside the elastic piece. The speaker can be attached to the cabinet without using a screw by using a frame member made of a plate-like body provided with an engaging protrusion that comes into pressure contact with the outer peripheral portion of the speaker attaching boss.

[0017]

Embodiments of the resin frame for a speaker of the present invention will be described more specifically below with reference to the accompanying drawings.
As shown in FIG. 1, the speaker resin frame 10 of the present invention basically includes a frame main body 10, a frame mounting portion 13, and an elastic coupling member 12 connecting the frame main body 10 and the frame mounting portion 13. ing.

In the frame main body 10, a rectangular plate-like body 10a made of polyethylene resin is integrally provided with a bulging portion 10b having an elliptical plane for mounting the magnetic circuit 11 and a vibration system (not shown). It is obtained by molding, and the frame mounting portion 13 is connected to the outer peripheral edge portion on the short side of the frame main body 10 (only one side is shown in FIG. 1) via elastic coupling members 12, 12. . The elastic coupling member 12 has an inverted U-shaped cross section,
In this embodiment, the frame mounting portion 13 is coupled to the frame main body 10 by the two elastic coupling members 12, 12 with a predetermined space. In this embodiment, since the speaker is attached to the cabinet in a floating state, one of the elastic coupling members 12 is shortened,
The frame mounting portion 13 is configured to be located higher than the frame main body 1. Further, reference numeral 14 in the drawing denotes a screw hole provided in the frame mounting portion 13.

The resin frame for the speaker having such a structure is
It is attached to the cabinet 16 as shown in FIG. That is, the back surface of the frame mounting portion 13 is brought into contact with the top surface of the boss 17 projecting from the back surface of the cabinet 16, and the screw hole 14 formed in the frame mounting portion 13 is screwed into the screw hole (not shown). No. 1) and then the screw 15 is fixed to the screw hole of the boss 17, so that the speaker can be easily attached to the cabinet 16 by floating it at a predetermined interval. In the figure, 18 is the front of the frame main body 10 and the cabinet 16.
The sealing material 18 is a sealing material for blocking the sound emitted from the front surface of the speaker and the sound emitted from the rear surface from the gap formed between the speaker and the back surface of the speaker, or preventing dust and the like from entering the speaker. The speaker is integrally attached to the edge of the diaphragm of the speaker in consideration of the distance between the speaker mounting positions with respect to the cabinet 16.

FIG. 3 shows another speaker resin frame of the present invention. When the frame mounting portion 23 is attached to the frame main body 20 via the elastic coupling member 22,
The frame mounting portion 23 has a specific shape.
That is, the frame attachment portion 23 in FIG. 4 is a frame member 24 formed by connecting plate-shaped bodies having a predetermined height in a planar rectangular shape.
And one side wall 24 a of the frame member 24 in the longitudinal direction.
A pair of notches are formed in the (side wall located on the frame main body 20 side at the time of joining) at predetermined intervals so as to extend from the upper edge to the lower edge to form a vertically long elastic piece 25.
When the boss formed on the cabinet is inserted into the frame member 24 inside, the engaging projection 26 is formed integrally with the outer peripheral portion of the boss so as to be in pressure contact. Therefore, it is preferable that the engagement protrusion 26 is formed in a wedge shape so that the engagement protrusion 26 can be smoothly brought into pressure contact when a part thereof is brought into pressure contact with the boss. Further, reference numeral 24b in the drawing denotes a rib for reinforcing the frame member 24.

As shown in FIG. 4, such a speaker resin frame has a frame member 24 constituting a frame mounting portion 23.
When the boss 27 protruding from the back surface of the cabinet 28 is inserted into the inside, the engaging protrusion 26 protruding from the elastic piece 25 is inserted into the boss 27.
When the tip end surface of the frame member 24 comes into contact with the cabinet 28, the elastic piece 25 returns by its own elasticity and the engaging projection 26 is pressed against and fixed to the outer peripheral portion of the boss. The speaker resin frame can be easily and easily attached to the cabinet.

The magnetic circuit section 21 is provided in the cabinet 28.
When it is desired to remove the frame main body 20 after mounting and fixing the frame main body 20 mounted with, the elastic projection 25 is pushed in the direction of the arrow as shown in FIG. Since the press contact of the boss 27 is released, it can be easily removed only by lifting the frame main body 20 upward.

In the embodiment shown in FIGS. 1 and 2,
Although the frame main body 10 has a rectangular shape and only one side thereof has been described, the frame attaching portion is also provided on the other side via an elastic coupling member. Further, when the frame main body is entirely circular, it is desirable that there are at least three or more elastic coupling members for coupling the frame main body and the frame mounting portion. Further, in this example,
Although the frame mounting portion 13 is arranged above the frame main body 10, the frame main body 10 may be arranged above the frame mounting portion 3.

Also in the embodiment shown in FIGS. 3 and 4,
The frame attachment portion 23 for the frame main body 20 is also provided at the other end edge through an elastic coupling member, and at least two elastic pieces 25 are formed in the frame member 24 constituting the frame attachment portion 23. Of course, the frame main body 20 may have a circular shape as a whole. Further, although the frame attachment portion 23 has been described with respect to the frame member which is composed of a rectangular plate-like body as a whole, the frame member is formed of a cylindrical body into which a boss formed in the vocabinet can be inserted. A pair of notches may be formed in a part of the elastic piece to form an elastic piece, and an engaging projection that is in pressure contact with the outer peripheral surface of the boss may be formed inside the elastic piece. In addition,
The elastic piece formed on the frame member is preferably such that the upper end portion thereof projects upward, because the operation becomes easier when the frame main body is removed from the cabinet.

[0025]

The resin frame for a speaker of the present invention is
Since the frame mounting portion is provided at the outer peripheral edge of the frame body made of synthetic resin via the elastic coupling member, it is possible to greatly reduce the vibration of the speaker transmitted to the cabinet.

In particular, when the frame main body is attached to the cabinet by connecting the frame main body to the frame main body via the elastic connecting member by raising or lowering the position of the frame main body to the frame main body. Moreover, since it is possible to prevent the vibration of the speaker from being transmitted to the cabinet, it is optimal as a speaker frame for a television receiver. Further, since the vibration from the speaker is absorbed and alleviated by the elastic coupling member, it is not necessary to use the cushion material as in the past, so that the number of parts can be reduced and the assembling process can be simplified. The production efficiency of the speaker can be improved.

Further, in the speaker resin frame of the present invention, when the frame attaching portion is attached to the frame main body via the elastic coupling member, the speaker attaching portion is formed by the frame member, and the elastic piece is formed on the frame member. A frame main body can be fixed to the cabinet without using any screws by providing an engaging projection on the elastic piece and pressing the engaging projection against the outer peripheral portion of the boss of the cabinet to be inserted into the frame member. , It is possible to eliminate screws as fixing parts.

[Brief description of drawings]

FIG. 1 is a partial perspective view showing an embodiment of a speaker resin frame of the present invention.

FIG. 2 is a partial cross-sectional view of a main part showing a usage state of the speaker resin frame of FIG.

FIG. 3 is a partial perspective view showing another embodiment of the speaker resin frame of the present invention.

FIG. 4 is a partial cross-sectional view of an essential part showing a usage state of the speaker resin frame of FIG.

FIG. 5 is an explanatory diagram showing a usage state of a conventional speaker frame.

[Explanation of symbols]

 10, 20 Frame main body 12 Elastic coupling member 13, 23 Frame mounting part 16, 28 Cabinet 17, 27 Cabinet boss

Claims (5)

[Claims] 1. A frame main body to which a magnetic circuit and a vibration system can be attached is formed of a synthetic resin material, and is screwed to a speaker mounting boss provided in a cabinet at the outer peripheral edge of the frame main body. A resin frame for a speaker, characterized in that the frame attachment portion of (1) is provided via an elastic coupling member. 2. A frame main body to which a magnetic circuit and a vibration system can be attached is formed of a synthetic resin material, and a boss provided in a cabinet can be inserted into an outer peripheral edge portion of the frame main body. A resin frame for a speaker, characterized in that a frame mounting portion made of a frame member provided with an engaging projection that comes into pressure contact with the outer peripheral portion of the inserted boss is provided via an elastic coupling member. 3. A frame main body to which a magnetic circuit and a vibration system can be attached is formed of a synthetic resin material, and an outer edge of the frame main body has an upper edge on one side wall of a frame member made of a plate-like body. To form a pair of notches toward the lower edge to form an elastic piece, and an engaging projection that comes into pressure contact with the outer peripheral portion of the speaker mounting boss of the cabinet inserted into the frame member is formed inside the elastic piece. A resin frame for a speaker, wherein the provided frame attachment portion is provided via an elastic coupling member. 4. The frame main body according to claim 1, wherein the frame main body is mounted so as to be located above or below a frame mounting portion coupled via an elastic coupling member. Resin frame for speakers. 5. The elastic coupling member has an inverted U-shaped cross section, and the frame main body and the frame mounting portion are coupled by at least one elastic member. The resin frame for a speaker according to any one of 1 to 3.