JP3619746B2 - TV speaker mounting structure - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to a structure for mounting a speaker in a television cabinet provided with a blocking means for preventing the vibration of the speaker from being transmitted to a cathode ray tube.
[0002]
[Prior art and problems to be solved by the invention]
It is known that when a speaker is incorporated in a television cabinet, a phenomenon occurs in which an image at the speaker side end of the cathode ray tube slightly swings in the scanning line direction due to vibration of the speaker.
[0003]
In a conventional CRT with a curved screen, this phenomenon was not noticeable unless the user consciously looked at the screen. However, it has also been found that this phenomenon is remarkable in a flat-type television whose screen is not curved, although it is within an allowable range.
[0004]
The present invention clarifies a structure for mounting a speaker in a television cabinet that can solve the above problem by preventing the vibration of the speaker from being transmitted to a cathode ray tube.
[0005]
[Means for solving the problems]
The present invention has an elastic member ( 4 ) interposed between the inner surface of the television cabinet ( 1 ) and the opening side end face of the speaker ( 3 ) over the entire circumference of the opening side end face, and the rear part of the speaker ( 3 ). mounting an elastic member (6) is interposed between the member (5) and, in the speaker mounting structure of the television for fixing the mounting member (5) to the TV cabinet (1) inner surface, said mounting member (5), A speaker fitting part (51) and a mounting arm (52) (52) are provided, and the speaker fitting part (51) is provided with a frame (31) of the speaker ( 3 ) or a cylindrical iron core (32) surrounding the coil . An elastic member ( 6 ) is inserted between the speaker fitting part (51) and the tip of the mounting arm (52) is attached to the fixing protrusions (22) and (22) protruding from the outer periphery of the cathode ray tube ( 2 ). overlapping, or directly mounting arm (52) in against the TV cabinet (1) inner surface, of the speaker (3) opening side bullet Member (4) is so as to slightly compressive deformation, and is screwed.
[0006]
[Action and effect]
The speaker (3) is supported by the inner surface of the TV cabinet (1) and the mounting member (5), and is elastic to the TV cabinet (1) and the mounting member (5). Therefore, it is possible to prevent the vibration of the speaker (3) from being transmitted, so that the influence of the vibration is not exerted on the cathode ray tube (2).
Therefore , it is possible to prevent the vibration of the speaker ( 3 ) from adversely affecting the screen.
[0007]
Moreover, since the opening side end surface of the speaker (3) and the television cabinet (1) are surrounded by the elastic member (4) which is pushed and elastically deformed by the speaker (3), the sound from the speaker is It is possible to prevent escape into the TV cabinet.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Figure 1 shows a state viewed attached only state of the cathode-ray tube (2) and the speaker (3) to the TV cabinet (1) obliquely from the rear.
[0009]
The television cabinet (1) is provided with an opening (10) that is slightly smaller than the cathode ray tube (2), and mounting bosses (13) are projected rearward in the vicinity of the four corners of the opening (10).
In addition, on the left and right sides of the opening (10), a vertically long rectangular peripheral wall (14) for speaker mounting is projected rearward, and in the peripheral wall (14), a slit-like, round-hole or square-hole speaker hole is provided. (12) (12) is opened through the front and back of the cabinet.
[0010]
As is well known, the cathode ray tube ( 2 ) is fixed by winding a metal band (21) around the outer periphery , and fixing protrusions (22) are outwardly facing the band (21) corresponding to the mounting bosses (13) at the four corners. Projected to
[0011]
The speaker (3) of the embodiment is a vertically long elliptical dynamic speaker, and a rod-shaped elastic member (4) having a rectangular cross section is provided around the end surface of the frame (31) on the opening side of the cone (33). .
[0012]
A cylindrical iron core (32) covering a coil (not shown) of the speaker (3) is surrounded by an elastic member (6). As shown in FIG. 3, the elastic member (6) includes a strip-shaped elastic piece (6a) covering the peripheral surface of the cylindrical iron core (32) and a circular elastic piece (6b) covering the closed end face of the iron core (32).
The elastic members (4) and (6) are made of, for example, urethane foam rubber, and are fixed to the speaker (3) with an adhesive.
[0013]
The speaker (3) is fixed to the mounting boss (13) with a screw (7) together with the cathode ray tube (2) by a mounting member (5).
The mounting member (5) is formed by punching and bending a metal plate, and a speaker fitting portion (51) is formed in the center portion where the cylindrical iron core (32) of the speaker (3) is fitted. The speaker fitting portion Mounting arms (52) and (52) are provided vertically from (51) , and the tip of the arm (52) is extended to the mounting boss (13) side as shown in FIG. ).
[0014]
The speaker fitting portion (51) of the mounting member (5) is in a state in which when the iron core (32) of the speaker (3) is fitted, the elastic member (6) surrounding the iron core (32) is slightly deformed and does not rattle. Fits in.
[0015]
The speaker (3) an elastic member (4) on the opening side of, against the end face of the TV cabinet (1) the inner surface of the peripheral wall (14), the arm (52) the tip of the mounting member (5) cathode-ray tubes (2) When the fixing protrusion (22) is fixed to the mounting boss (13) with the screw ( 7 ) , the elastic member ( 4 ) is slightly compressed and deformed by being pushed by the speaker ( 3 ) .
[0016]
However, in a state where the speaker ( 3 ) is supported in the television cabinet (1) by the attachment member (5) , the speaker ( 3 ) is attached between the opening side end surface of the speaker ( 3 ) and the television cabinet ( 1 ) , and the speaker ( 3 ). Elastic members ( 4 ) and ( 6 ) are interposed between the members ( 5 ) . Therefore, vibration of the speaker (3) can be prevented from being transmitted to the TV cabinet (1) and the mounting member (5). Therefore, the vibration of the speaker ( 3 ) does not adversely affect the screen of the cathode ray tube ( 2 ) .
[0017]
Moreover, since the speaker (3) opening side end surface and the television cabinet (1) are surrounded by the elastic member (4) which is pushed and elastically deformed by the speaker (3), the sound emitted from the speaker is It is possible to prevent escape into the cabinet.
[0018]
In carrying out the present invention, the speaker fitting portion (51) of the attachment member (5) may be formed large so that the frame (31) of the speaker (3) can be fitted.
[0019]
The iron core (32 ) of the speaker ( 3 ) is fixed to the mounting member ( 5 ) without the elastic member ( 6 ) interposed, and the tip of the mounting arm (52) is fixed to the fixing protrusion (22) of the cathode ray tube (2). When the screws are fastened to the mounting boss (13) on the TV cabinet , the vibration transmission to the cathode ray tube (2) can be cut off in the same manner as described above, even if an elastic member is interposed in the screwing portion . I think . However , in order to fix the heavy CRT tube (2) with screws, it is necessary to tighten the screw strongly. Even if an elastic member is interposed in the clamping portion of the CRT tube ( 2 ) , the elastic member is crushed. The desired vibration isolation effect cannot be achieved.
[0020]
The present invention is not limited to the configuration of the above-described embodiments, and various modifications can be made within the scope of the claims.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a mounting state of a cathode ray tube and a speaker.
FIG. 2 is a partial perspective view of a speaker and a mounting member.
FIG. 3 is a cross-sectional view of a speaker attached state.
[Explanation of symbols]
(1) TV cabinet
(2) CRT
(3) Speaker
(32) Tubular core
(4) Elastic member
(5) Mounting member
(51) Speaker fitting
(52) Mounting arm
(6) Elastic member

Claims (1)

Between the inner surface of the television cabinet (1) and the opening side end face of the speaker (3), an elastic member ( 4 ) is interposed over the entire circumference of the opening side end face, and the rear part of the speaker ( 3 ) and the mounting member ( 5 ) , an elastic member ( 6 ) is interposed between them, and the mounting member ( 5 ) is fixed to the inner surface of the television cabinet ( 1 ). In the TV speaker mounting structure, the mounting member ( 5 ) has a speaker fitting portion ( 51) and mounting arms (52) and (52) . The speaker fitting (51) is provided with a frame (31) of the speaker ( 3 ) or a cylindrical iron core (32) surrounding the coil, and the speaker fitting ( 51) with an elastic member ( 6 ) interposed therebetween, and the tip of the mounting arm (52) is overlapped or attached to the fixing protrusions (22) and (22) protruding on the outer periphery of the cathode ray tube ( 2 ). an arm (52) directly against the TV cabinet (1) inner surface, a speaker (3) opening side of the elastic member (4) is So as to be compressed and deformed, the speaker mounting structure of television that is screwed.

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