JP2589946Y2 - Tension spring for ground wire - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension spring for an earth wire, for example, a tension spring for an earth wire which contacts an external conductive film on the back surface of a cathode ray tube of a television receiver to apply a tension to the earth wire.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 3, for example, as shown in FIG. 3, a braid is provided on the back of a cathode ray tube of various television receivers to ground static electricity charged on an external conductive film applied to the back of the cathode ray tube 11 to the ground. Wire 10 is attached.

[0003] That is, in FIG. 3, a braided wire 10, which is a ground wire for grounding, is made of a twisted conductive thin wire or a plated single wire. It is wrapped around the funnel portion 12 coated with the external coating film, and
A cathode ray tube fixing bracket 13 provided at a corner is fixed via a holder 14, and one end of a ground lead 15 is connected to a part of the braided wire 10. The braided wire 10 is connected to the funnel 1 of the CRT 11.
A part of the braided wire 10 is pulled by a tension spring 16 formed into a coil shape with a predetermined steel wire so that the braided wire 10 is not loosened so as to be in close contact with the wire 2.

[0004]

However, such a conventional tension spring has problems such as a high material cost and a high manufacturing cost due to the long use length of the wire, depending on the coil diameter and the number of windings. was there.

[0005] The present invention has been made in view of such a conventional problem, and is made of a linear elastic member.
An object of the present invention is to provide a tension spring for an earth wire which is reduced in cost by being bent into a U-shape and formed into a shape having engagement portions at both ends.

[0006]

According to the present invention, there is provided a tension spring for an earth wire having a tension spring which contacts an external conductive film applied to the back surface of a cathode ray tube and applies tension to an earth wire connected to the earth. The tension spring is made of an elastic member, bent in a rectangular shape, has engagement portions at both ends, an engagement portion at one end is engaged with the ground wire, and a casing at the other end holds the cathode ray tube. And is characterized by being engaged with.

[0007]

According to the present invention, by adopting such a structure, the linear elastic member is not formed in the shape of a coil, but is simply bent in the shape of a "ku". It is short, the material cost is low, and the processing process is greatly simplified.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the ground wire tension spring according to the present invention. First, the configuration will be described. FIG. 1 is a view showing a tension spring for a ground wire according to the present invention. The ground wire tension spring 1 (hereinafter simply referred to as a tension spring) is made of a quenched steel wire as a linear elastic member, cut into a predetermined length, and is bent at a substantially central portion into a square shape. doing. Numerals 2 are hooks which are formed at both ends of the tension spring 1 and are rounded engaging portions. Here, the refraction angle θ of the tension spring 1 is arbitrary, but is preferably set to an obtuse angle within 120 degrees.

As shown in FIG. 2, the tension spring 1 formed as described above is connected to one end of the tension spring 1 in order to prevent the braided wire 10 wrapped around the funnel portion 12 of the cathode ray tube 11 from loosening. Is hooked on the braided wire 10, and the hook 2 on the other end is hooked on the screw 16 of the bracket 13 for fixing the CRT. The braided wire 10 is brought into close contact with the periphery of the funnel 12 of the cathode ray tube 11 as in the prior art.

Next, the operation will be described. In the present invention, since the tension spring 1 is a hardened linear steel wire, and the hook 2 is formed by bending the center portion and bending both ends round, the tension spring 1 has a steel wire length equal to that of the ground wire 10. Only the length that connects the bracket 13 almost linearly is sufficient, and the length of the steel wire is greatly reduced as compared with the case of the conventional coiled spring, so that the material cost is reduced and the cost can be reduced. Further, the processing of the steel wire is only a slight bending processing at the center and a round bending processing at both ends, so that the processing is simple and the processing cost can be greatly reduced.

Further, the ground wire 1 of the tension spring
The attachment of the bracket 13 and the screw 13 to the screw 16 can be performed only by hooking the hooks 2 of the tension spring 1, respectively, and the assembly can be performed extremely easily.

[0012]

As described in detail above, the tension spring for an earth wire according to the present invention bends a substantially central portion of a steel wire cut to a predetermined length into a "<" shape, Hooks are formed at both ends of the wire,
Since the use length of the material is short, the material cost is low, and the molding process is simplified, so that the manufacturing cost can be greatly reduced and the assembling can be also simplified.

[Brief description of the drawings]

FIG. 1 is a front view of a ground wire tension spring showing an embodiment of the present invention.

FIG. 2 is a perspective view of the CRT to which the ground wire tension spring of the present invention is applied.

FIG. 3 is a perspective view of a cathode ray tube to which a conventional tension spring is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tension spring for ground wire 2 Hook 11 CRT 12 Funnel

Claims (1)

(57) [Scope of request for utility model registration] An earth wire tension spring having a tension spring that contacts an external conductive film applied to the back surface of a cathode ray tube and applies tension to an earth wire connected to the earth, wherein the tension spring is made of an elastic member; It is bent in the shape of a letter and has an engaging portion at both ends, an engaging portion at one end is engaged with the ground wire, and an engaging portion at the other end is engaged with a casing holding the cathode ray tube. Tension spring for ground wire.