JPS56174292

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DESCRIPTION JPS56174292
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a conventional
example, and FIGS. 2a to 2c are side and longitudinal views of a shield case according to the
present invention, a cross sectional plan view of a yoke, FIG. C to F are a front view and a
longitudinal cross section of the shield case, a side view of the yoke, FIG. 4 is a sectional view
showing the main part when the shield case is attached, and FIG. 5 is a perspective view showing
the use condition of the present invention, The figure is a cross-sectional view showing the
removed state of the shield case. 5 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · longitudinal beads, 11 · · · · horizontal beads.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shield for a
speaker suitable for use in a color television / con receiver according to the present invention.
Color television receivers, etc. CI + ') Speaker VCI fl, a Macnet which generally drives the
amplitude of the Heus coil, is included, but if this magnet is exposed and it is embedded in the
electric circuit of the television receiver, 1-7 or Cz: For example, a part of the cathode ray tube
(CRT) surface is subject to color unevenness, defocusing, etc. by the magnetic field of the Macnet.
I was scolded to shield the magnetic field. However, as shown in FIG. 1, since the conventional
shield body for a shield is a dormitory, it is attached to the yoke 3 disposed on the back of the
box-shaped shield case Xi shield body 2 made of a high permeability member. The magnet is
fixed by the agent, and the magnetic field of the speaker containing the magnet is accommodated
inside, and the air is discharged to the outside world. Therefore, once one shield case is attached,
its removal is very difficult. It was difficult, and it was a measure that the construction and repair
of the magnetic circuit became practically impossible, or it was not possible to easily cope with
vC when the appearance of a speaker not requiring a magnetic shield was observed. The present
invention has been described above and has been made at fcAVc @@, and it is mounted on a
magnetic shield of a speaker equipped with a magnet and a yoke having a yoke that
accommodates the entire magnet, and mounted on a speaker shield VC for performing a
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magnetic 2-shield. By forming a longitudinal bead that crimps the face of the Yol-ri 'l1fli to the
opposing blood supply of the n-Koldocus, and a horizontal and a ridge that holds the yaw end,
the speaker body is made to be a layer & ii It is an object of the present invention to provide a
speaker shield body that can easily cope with a speaker that does not require magnetic shielding.
Below, the color television of the present invention? An embodiment applied to a speaker of IJ
will be described with reference to FIG. 2 which is a speaker body built in a 4-ray television
receiver in キ 6 Bkl, with an amplitude of a small coil (not shown) on the back of the speaker. A
yoke 6 having a U-shaped cross-section, which accommodates the driving Macnet 5, is rigidly
mounted, and a yoke case 7 made of a high magnetic permeability member such as a silicon steel
plate is mounted on the Qr joke. The shield case 7L is formed into a substantially rectangular
parallelepiped in which the st1 portion and the back s are formed open, and the vertical bead 10
and the s heat 11 or 3 are respectively formed on the facing 1 side 8.9.
Vertically and -Fl Ot1, as shown in Fig. 2 (a) to (-> VC, the plate surface of the side surface 8
protrudes inward and is formed to be directed perpendicularly to the opening edge of the shield
case 7 The opposing distance A between the slope heats lO projecting from each other by 1111
K within the VC is formed slightly smaller than the facing distance B of the yoke 6 which is
ground to 1jl ++ io 8.8. As shown in the horizontal beat 1lFi, Fig. 3 (0) to (c), the plate ilk +
corresponding to the magnet 5 accommodation position in the yoke 6 slightly back from the
center of KIilu 19 is projected to the inside g111. The facing distance C between the cross beams
11 projecting inward into each other along the opening edge is in parallel to the yoke 60 facing
distance corresponding to *@9.9. It is formed. In this case, when the shield case 7 is attached to
the yoke 6 as shown in FIG. 4 of the lateral heat 11, it is separated from the end of the yoke 6 by
the distance t and positioned at the circumferential end of the magnet 5. Configured Therefore, t
is smaller than the thickness t of the magnet 5. -4 = Dwarf] Shield case 7 configured as the back
of the speaker & (: Jf! If attached, the front opening of the shield case 7 會 speaker's back Oi 1
[Taste towards, the yoke 60 circumference l fits all the openings s of the shield case 7 and the
vertical bead lo ヲ of the shield case 7 to its rigidity Against the surface of the yoke 6
corresponding to the glossy surface 8 and against the rigidity of the lateral bead ll of the shield
case 7 against the rigidity of the IIII'll 9F (corresponding to one surface of the yoke 6). Cj is made
by invading the peripheral end of the Macnet 5. In the shield case 7 mounted on one side of the
yoke 6 ha, the equivalent redundant force of the displacement due to the longitudinal movement
and the lateral movement [+ + insertion is accumulated. At the same time, the 1 lateral heat 11 is
engaged with the end of the yoke 6 and is mounted on the yoke 6 in the direction of%. In
addition, since the lateral heat 11 is absorbed by the repulsive force of the magnet 5 at the time
of mounting, the heat resistance is also small. On the other hand, when removing the shield case
7 thus added, first, the shield case 7 is pulled in the back direction of the 5-speaker main body 4,
and between the base of the yoke 6 and the front fiL + -ro edge of the shield case 7. Allow the
gap to form. This operation should be performed with a relatively small force, as it is only
necessary to slide the rainbow beat lO along the side 1IIT of the yoke 6 and then place it along
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the side of the side 1 and the side 1d of the magnet 5. I can do it.
In this case, in the case of the shield case 7 and the slide slide, the cCrt is still applied between
the vertical bead lo and the yoke 6 and 11 and the cross bead 11 is the end of the yoke 6 (!:
Engagement Therefore, the shield / r-suff is not released. Next, insert the pointed end of the
driver 12 into the clearance as shown in FIG. 6 VC, move it in the direction of the arrow to
release the engagement between the horizontal bead ll and the yoke 6, and shield case 7 Can be
removed. As described above, according to the present invention, since the shield case is attached
and detached to the magnetic tp + path total number of magnets and yokes of the speaker [the
shield case can be removed, 6-shield case can be removed, maintenance of the magnetic circuit
portion , You can do the training easily. In addition, by configuring the shield case to be a dropoff town, the same effect can be achieved even if it is a speaker that does not come with a shield
or dust, it can be made to correspond to tLvc% easy V . ４、ｌｙ！ Brief Description of Four
Sides FIG. 1 is a printing view showing a prior art example j, FIG. 2) 0) to C) are a packing view of
the shield nurse according to the present invention and a vertical view +) II 1% 1 of yoke, 3 (I) to
3 (C) are a front view and a vertical view of the shield case, a side view of the yoke, and FIG. 4 is
a cross-sectional view showing an essential part when the shield case 7 is attached; Fig. 5 Use
condition 1i- 龜 of the old plan 糾 76 糾 76 76 76 Figure 1 is a cross-sectional view showing the
removal of the shield case. 5-. Magnet, 6 ... Yoke, 7 ... Shield case, lt + .. Book heat, li .. Horizontal
bead. Utility model applicant Applicant Higashi Y Shiba-A company d (73/7) Agent / I ':: l-1: Jj U;
Ii ,: tile tri (1 person) 7-1 1 " -5-1--3) '1 1--/ / / / /! I′′24 第 FIG. 2 FIG. 3 (a) 78 (b) 7 (b) 7 (a)
(0) mountain ··· L 吋 seven white · 10011--A-((ha) 匡 = 2 = 1-11 ( C) 7D ÷: m ′ ′ = 8-5-9Q 7 ≦
−-outer condyle ′ ′ 吏 ′ ′: · turf and mountain ′ ′ · ′ ′ ′ ′ ′ FIG. 4-6 5 □ 1 FIG. '0 1 \ -8 · Ding-7 、, the, -7' j-. 6) 51 T □, 2 8 ′ 2 4. I-54715, List of Appendices L (1) Power of
Attorney 1 "(2) Description 1 (1) (3) Drawing 1 (4) Requests Subsidiary 1 6; Other Inventors,
Practical Applicant for patent registration or agent (1) inventor (2-1-1 Uchiyukicho, Chiyoda-ku,
Tokyo Tokyo Shibaura Electric Co., Ltd. Tokyo office □; J · (7567) Patent attorneys Takashi Aji 'l'
7 '-
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