JPS5924154Y2 - lamp socket - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a lamp socket, in which two half-cylindrical parts 3, 3 having a ceiling wall 1 and a bottom wall 2 and having one side open are placed so that their open end faces are connected to each other. A pair of electric wires are brought into contact with each other to form an electric wire connection part 4 made of an insulating material, and ball protrusions 5, 5 are provided protruding from the outer surface of both opening ends of each half-cylindrical part 3, and a pair of electric wires is housed in the electric wire connection part 4. The lower parts of the center contact plate 7 and the base contact plate 8 attached to the connection terminal fittings 6, 6 respectively protrude downward from the lower wall 2, and the inner periphery of the two ends of the approximately cylindrical insulating socket part 9 is made. A partition wall 10 is provided in the partition wall 10, and a pair of upper and lower opening holes 23, 23 are formed in the partition wall 10. Lower protrusions 11, 11 are provided protrudingly on both upper sides of the outer circumferential wall of the socket part 9, and a lower surface of the wire connection part 4 is provided. The upper surface of the socket part 9 is brought into contact with the upper surface of the socket part 9, and the center contact plate 7 and the base contact plate 8, which protrude downward from the lower wall 2, are inserted into the socket part 9 through the respective holes 23, 23, and the center contact plate The portion of the plate 7 that is inserted into the hole 23 is bent into a substantially dogleg shape, and the peripheral edge of the hole 23 of the partition wall 10 is engaged with this bent portion, so that the ball protrusion 5 of each half-cylindrical portion 3 and the socket portion are connected to each other. This relates to a lamp socket in which a socket part 9 is integrally connected to a wire connecting part 4 made up of a pair of half-cylindrical bodies 3, 3 by joining a lower protruding part 11 of 9 with a tightening fitting 12. be.

In conventional lamp sockets, the wire connection part and the socket part are connected with a screw 13 as shown in Figure 1, but when the lamp is attached to the socket part and energized, the synthetic resin molded product The wire connection part and the socket part have the disadvantage that the screws may loosen as the temperature rises and heat shrinks repeatedly, and since the screw is screwed inside the socket, it is difficult to tighten it, and the wire connection part Since they are integrated, it is difficult to assemble the wire connection terminal fittings.

The present invention solves the above-mentioned drawbacks, and its first purpose is to fix the upper and lower protrusions provided on the outer circumferential wall of the electric wire connection part and the L-section of the socket with a tightening fitting.
A second object of the present invention is to provide a lamp socket in which the connection between the wire connection part and the socket part is easy and the connection between the wire connection part and the socket part does not loosen. Since it is divided into two parts, it is easy to assemble the wire connection terminal fitting, and since a partition is provided on the top surface of the socket, the screwing force of the lamp can be supported by the partition, and the connection between the wire connection and the socket is improved. To provide a lamp socket in which a simple connection means can be used.

The present invention will be explained in detail below with reference to illustrated embodiments.

The lamp socket consists of a wire connection part 4 and a socket part 9, and the wire connection part 4 is made of an insulating material such as synthetic resin and has a substantially bottomed cylindrical shape with a ceiling wall 1 and a bottom wall 2.
It is divided into two symmetrical semi-cylindrical parts 3.

At the lower end of the outer circumferential wall at both ends of the half-cylindrical part 3, substantially rectangular upper protrusions 5 are provided to protrude outward, and at substantially the center of the inner side end surface of each upper hollow part 5 is a substantially triangular-shaped upper protrusion 5. A recess 14 is provided, and the central part of the ceiling wall 1 of the half-cylindrical part 3 has a substantially U-shaped cross section in a direction substantially perpendicular to the dividing plane of the half-cylindrical part 3. It protrudes outward from the outer peripheral wall of 3,
A wire lead-in port 20 is provided on the front end surface of the solid portion 15 .

A partition wall 16 is erected between the center part of the actual space part 15 and the lower wall 2 over the entire length of the real space part 15, and both sides of the partition wall 16 are terminal fitting insertion parts 17, and the partition wall 16 Approximately U-shaped notches 18 are provided at both ends of the divided lower wall 2 on both sides of the lower end.

The conductive wire connection terminal fitting 6 has an extension piece 22 hanging from the center of a substantially U-shaped fitting part 21 on both sides, and a central contact plate 7 or The upper end of the connection plate 8 for the cap is tightened and fixed by spot welding or the like.

A roughly M-shaped locking fitting 27 consisting of a locking piece 27a and a wire pressing piece 27b is attached to the U-shaped part on both sides of the U-shaped fitting part 21, so that the electric wire can be pulled in and sent. The electric wire connection terminal fitting 6 is a so-called quick connection terminal in which the electric wire is not screwed.

At both upper ends of the outer circumferential wall of the socket part 9 made of an insulating material and having a substantially cylindrical shape having substantially the same diameter as the wire connecting part 4, there are two protrusions having a substantially rectangular shape that face each other with a gap in between on the left and right sides. Real part 11
are provided to protrude outward, respectively, and a hole 23 is formed in each end of the partition wall 10 on the fruiting part 11 side, which is provided over the entire surface slightly inside the upper surface of the socket part 9.

Further, in the figure, 24 is a heat radiation hole, 25 is a shade support part, and 26 is a lamp receiving part.

The tightening fitting 12 has a substantially rectangular frame-shaped fitting main body 12a and a substantially V-shaped leg portion 12b hanging therefrom.

When assembling the lamp socket, one U-shaped part of the two U-shaped fittings 21 is connected to the partition wall 16.
After inserting the extension piece 22 into the opposing terminal fitting insertion part 17 via the terminal fitting insertion part 17 and positioning the tip in the wire entry port 20 and inserting the base part of the extension piece 22 into the notch part 18, The mold fitting 21 is inserted into the terminal fitting insertion part 17 of the other half-cylindrical part 3.
, the two half-cylindrical parts 3 are combined to form the wire connection part 4, and the upper protrusions 5 on both sides of the two half-cylindrical parts 3 are aligned,
From one notch 18 to the lower part of the extension piece 22 and the center contact plate 7
is made to protrude downward, and the extension piece 22 and the contact plate 8 for the cap are made to protrude downward from the other notch 18.

The center contact plate 7 and the contact plate 8 for the base are respectively projected into the socket part 9 from the hole part 23, and the lower end surface of the wire connection part 4 and the socket part are aligned so that the positions of the upper protrusion part 5 and the grain part 11 match. 9, and insert the upper protrusions 4 of the two half-cylindrical parts 3 into the openings of the metal fitting main body 12a, and insert the foot parts 12b between the two protrusions of the fruiting part 11. The lower part of the foot part 12b is locked to the lower end of the grain part 11, and the metal fitting main body 12a is squeezed along the recessed part 14, so that the electric wire connection part 4 consisting of the two half-cylindrical parts 3 is formed by the two tightening metal fittings 12. After fixing the socket part 9 together, the central contact plate 7 is bent upward toward the center along the inner edge of the hole part 23, and the hole part 23 of the partition wall 10 is inserted into this bent part as shown in FIG. so that the peripheral edges of the two sides are engaged.

When installing the lamp socket, insert the electric wire into the U-shaped fitting 21 from the electric wire entry port 20 and prevent the electric wire from being pulled out using the locking piece 27 a of the locking fitting 27 . The cap 29 is screwed onto the receiving part 26, the cap contact plate 8 is brought into contact with the cap 29, and the center contact plate 7 is brought into contact with the center contact 30 of the lamp 28.

Since the wire connection portion 4 is formed by the two half-cylindrical portions 3 having the ceiling wall 1 and the bottom wall 2 as described above, the wire connection terminal fitting 6
can be inserted into the half-cylindrical part 3 from the open side surface of the half-cylindrical part 3, and the electric wire connection terminal fitting 6 can be easily assembled into the electric wire connection part 4.

In addition, upper protrusions 5 are provided at the lower part of the outer peripheral wall at both ends of the two half-cylindrical parts 3.
Since the grain portions 11 are provided oppositely on both upper sides of the outer circumferential wall of the socket portion 9, the ball projections 5 of the two half-cylindrical portions 3 and the grain portions 11 are integrally connected with the shark metal fittings 12. Since a screw is not required to connect the electric wire connection part 4 and the socket part 9, even if the socket part 9 and the electric wire connection part 4 are repeatedly heat-shrinked when using the lamp 28, a half cylinder can be formed. The connection between the part 3 and the socket part 5 does not loosen, and since the ball protrusion 5 and the fruit part 11 are provided on the outer peripheral wall, workability when tightening with the tightening tool 12 is good.

Furthermore, the central contact plate 7 that protrudes downward from the wire connection part 4 is inserted into the socket part 9 through the hole 23 of the partition wall 10 at the upper end of the socket part 9, and the part that is inserted into the hole 23 of the central contact plate 7 The partition wall 1 is bent into a substantially dogleg shape and the partition wall 1 is placed inside this bent part.
Since the peripheral edge of the hole 23 of the lamp 28 is engaged with the peripheral edge of the hole 23, when the base 29 of the lamp 28 is screwed into the socket 9 and the center contact 30 of the base 29 is brought into contact with the lower end of the center contact plate 7. Even if an upward force is applied to the center contact plate 7 due to the screwing force of the cap 29 of the lamp 28, this force will cause the bent portion of the center contact plate 7 to push against the partition wall 10 of the socket portion 9.
The force that pushes up the center contact plate 7 upward by the base 29 of the lamp 28 is received by the partition wall 10 by being locked to the peripheral edge of the hole 23 of the wire connection portion 4.
Therefore, the force pushing up the central contact plate 7 acts to separate the wire connection portion 4 and the socket portion 9, and the connection between the wire connection portion 4 and the socket portion 9 becomes disconnected. Furthermore, there is no danger of this, and the wire connecting portion 4 and the socket portion 9 can be sufficiently connected by a simple means such as the tightening fitting 12.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a conventional example, Fig. 2 is a front view of an embodiment of the present invention, Fig. 3 is a longitudinal sectional view of the same, and Fig. 4 is an exploded perspective view of the same. is the ceiling wall, 2 is the bottom wall, 3 is the semi-cylindrical part, 4 is the wire connection part, 5 is the ball protrusion, 6 is the wire connection terminal fitting, 7 is the center contact plate, 8 is the contact plate for the cap, 9 is the socket 1 part, 10 is a partition wall, 11 is a fruiting part, 12 is a tightening fitting, and 23 is a hole part.

Claims (1)

[Scope of utility model registration request] Two semi-cylindrical parts having a ceiling wall and a lower wall and having one side open are brought into contact with their open end surfaces to form an electric wire connection part made of an insulating material, and the outer surfaces of both open ends of each half-cylindrical part are A substantially cylindrical insulator is provided with protruding ball parts, and the lower portions of the center contact plate and the contact plate for the cap, which are respectively attached to a pair of wire connection terminal fittings housed in the wire connection section, protrude downward from the lower wall. A partition wall is provided on the inner periphery of the upper end of the socket part made of material, and a pair of holes are formed in the partition wall with upper and lower openings, and lower protrusions are provided on the upper side of both sides of the outer peripheral wall of the socket part, and a lower protrusion is provided on the lower surface of the wire connection part. A center contact plate and a base contact plate, which protrude downward from the lower wall with the upper surfaces of the socket portion in contact with each other, are inserted into the socket portion through each hole, and the portion of the center contact plate that is inserted into the hole is omitted. The periphery of the hole in the partition wall is engaged with the bent portion in a dogleg shape, and the ball protrusion of each of the half cylinders and the lower protrusion of the socket are connected with a tightening fitting to form a pair of half cylinders. A lamp socket made by integrally combining a wire connection part and a socket part.