JPH0143827Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an improvement on the socket for a decorative light bulb used in a Christmas tree.

(Prior Art) Many proposals have been made for sockets for decorative light bulbs used in Christmas trees. For example, Utility Model No. 46-30390, Utility Model No. 32216, Utility Model No. 46-32216,
No. 51-8638, No. 57-39899, No. 41971 No. 57-41
No. 57-39899, No. 57-42971, and many other structures have been proposed.

(Problem to be solved by this invention) As mentioned above, many structures have been proposed for decorative light bulb sockets for Christmas trees, but none of these proposals require attachment of lead wires. Regarding the structure, in addition to the complicated structure, there are drawbacks such as the lead wire mounting fittings easily coming off and the installation being time-consuming.

(Means for Solving the Problems) In addition to solving the above-mentioned problems, this invention makes it difficult for the connecting fitting of the attached lead wire to come off from the socket, and also makes it tightly bonded to the connection wire of the light bulb. It also simplifies the installation of connecting fittings.

To explain the drawings below, Fig. 1 is a perspective view showing the bottom surface 1 of the socket A, which is molded from synthetic resin, and where the mounting bracket C of the lead wire B, which has a cross-sectional shape from the bottom surface 1, is inserted. The hole 2 is formed symmetrically, and the outer end 2a of the insertion hole 2 is narrow, as shown in FIG. 2, for inserting the mounting bracket C of the lead wire B shown in FIG. It is formed to protrude outward from the circumference of the semicircular hole 2b and match the width of the mounting bracket C, and the lead wire B fixed to the mounting bracket C is inserted into the semicircular hole 2b at the inner end. 2 is the 4th
As shown in the figure, an insertion hole 3 is formed at the upper end of the socket A into which the mounting body 9 attached to the lower end of the light bulb D is inserted, and the insertion hole 3 is connected to the lower end of the insertion hole 3. . Further, as shown in FIG. 2, the upper end of the groove 2c at the outer end 2a of the part where these two are connected is formed to be slightly longer than the semicircular hole 2b, and as shown in FIG. 2, that is, inclined toward the semicircular hole 2b side, so that the mounting bracket B, which will be described later, naturally moves toward the outer end and easily enters the groove 2c.

Next, the mounting bracket C is formed by punching out a metal plate with a die, and as shown in FIG.
Formed with a width equal to or slightly narrower than d,
This forms a protruding latch piece 6 on both the left and right sides. The protruding latch piece 6 is formed into a deformed triangular shape with a pointed end 6a protruding upward and diagonally, and the lower end of the outer long side 6b being held by a piece. The clamping pieces 7, 7a are formed so as to reach the base end of the upper end of the lead wires 7, 7a, and as shown in FIG. Open the bare wire Ba at the interval and bulge out on the surface as shown in Figure 6. Further, the fixing pieces 8 and 8a, which fix the covered portion of the lead wire B at the lower end of the mounting bracket C, are tightly fixed by bringing their edges into close contact with each other. Figure 7 of the drawings shows a known light bulb D. If the light bulb D is shown with a solid line in Figure 4, the shape of the insertion hole 2 of the socket A becomes unclear, so it is shown separately. The mounting body is made of resin and has a flat cylindrical part 9 with a small diameter at the lower end.
A, a cut groove 10 is provided on the lower end surface, and a conductive wire 12 led out through the small hole 11 is extended outward and bent upward along the outer peripheral surface of the mounting body 9 to form a mounting bracket. It is to be brought into close contact with the bare wire Ba of the lead wire B of C.

(Function) Since this device is constructed as described above, the mounting bracket C is inserted into the insertion hole 2 of the socket A into the groove 2c of the outer end 2a, and the lead wire B is inserted into the semicircular hole 2b side. Therefore, since the lead wire B plays a guiding role, it can be easily inserted, and as it is inserted, the mounting bracket C is pressed in the direction of the groove 2c, and further the insertion hole 2
There is a groove 2c at the connection point between the upper end and the bulb insertion hole 3.
Since the inclined surface 4 is formed so that the mounting bracket C can be easily inserted into the upper end opening of the socket A,
Installation can be done by simply protruding the upper end slightly and pulling it downward.Furthermore, the triangular latching protrusion 6 enters the groove 2c, and the pointed end 6a is caught inside the groove 2c, allowing the socket A of the mounting bracket C to be attached. It is easy to install, and the bare wire of lead wire B and the connection wire of light bulb C can be perfectly attached to each other, and the structure of socket A is also easy and inexpensive to form. It has many advantages such as:

[Brief explanation of the drawing]

Figure 1 is a perspective view of the socket, Figure 2 is a -
line, Fig. 3 is a cross-sectional view along the - line, Fig. 4 is a longitudinal sectional view, Fig. 5 is a front view of the mounting bracket, Fig. 6 is a side view of the mounting bracket, and Fig. 7 is a cross-sectional view of the light bulb. A front view is shown. A...Socket, B...Lead wire, C...Mounting bracket, D...Light bulb.

Claims (1)

[Scope of utility model registration request] Insertion holes 2, 2 with a square cross section are formed symmetrically from the bottom surface 1 toward the upper end opening with the center line of the socket A as the center, and the insertion holes 2, 2 each have a cross section at the remaining upper ends of the insertion holes 2, 2. A triangular engaging protruding edge is formed, an inclined surface 4 inclined in the direction of the insertion hole 2 is formed at the contact point between the upper end of the insertion hole 2 and the engaging protruding edge, and an upper end 5 of the mounting bracket C of the lead wire B is formed. Triangular engaging projecting pieces 6 are provided on the left and right sides of the lower part, respectively, and the opposing edges 7a of the bent holding pieces of the left and right holding pieces 7 that hold the bare wire of the lead wire B are spaced apart to hold the bare wire. A Christmas light bulb socket that is held in place.