JPS6331497Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a lamp socket.

In the past, as in Japanese Patent Publication No. 55-6995, there was a device in which a terminal portion was provided on the rear side of the socket body to reduce the height of the device.

However, the lead wire that connects the socket body and the terminal part protrudes outside, making it difficult to handle, and the direction of the lead wire connection part of the socket body and the lead wire connection part of the terminal part is different, making connection work difficult. In addition, it requires a means for attaching the terminal portion and a means for attaching a cover covering the terminal portion, resulting in a disadvantage that the structure becomes complicated.

Therefore, the object of this invention is to provide a lamp socket which is simple in structure, easy to connect the lead wires, and does not expose the lead wires to the outside.

A downlight to which a first embodiment of this invention is applied is shown in FIGS. 1 to 8. That is, the appliance main body 1 is fitted into the embedded hole 3 in the ceiling 2, and the fixture 4
Installed by. A socket mounting hole 6 is formed in the top part 5 of the device body 1, a V-shaped spring 7 facing toward the center is attached to the edge of the hole as shown in FIG. I'm there.

The lamp socket 9 consists of a socket body 10 with a thread groove 10a formed inside and a terminal portion 11 which is a quick connection terminal, and the socket body 10 has a recess 12 for wiring space formed on the back side as shown in FIG. Terminal connecting portions 14a and 15a of a middle spring 14 and a contact spring 15, which contact the lamp 13 mounted in the screw groove 10a, are positioned in the recess 12 by a rib 16 and a fitting protrusion 17. The socket of the socket main body 10 has a large diameter cylindrical part 18 for mounting,
A semicircular arc heat radiation hole 20 is formed in the connecting part between the cylindrical part 18 and the socket body 10 with reinforcing ribs 19 and is approximately half of the circumference.
As shown in FIGS. 1 and 2, a mounting portion 23 consisting of a groove 21 and a spring receiving portion 22 that engages with the edge of the hole 6 of the instrument body 1 is formed to protrude in the radial direction and downward direction. As shown in Fig. 5, there is a hole edge locking groove 2 on the opposite side of the
4 and a hook portion 26 consisting of a protrusion 25 that engages with the rotation stopper recess 8 . As shown in Figure 1,
When attaching this lamp socket 9 to the appliance main body 1, press the spring receiver 22 against the spring 7 as shown in FIG.
At the same time, the locking grooves 21 and 24 are engaged with the hole edge and held by the action of the spring 7. In this mounting state, the center of the lamp socket 9 is eccentrically mounted with respect to the center of the hole 6, and since the mounting portion 23 protrudes, the hole edge 6a (Fig. 4) around the mounting portion 23 and the cylinder opposite thereto are A heat radiation hole gap H is formed between the portion 18 and the surface portion 18a. Since a spring force is applied to the mounting portion 23, one of the ribs 19 19a
The cylindrical portion 18b is reinforced closer to the direction in which the spring force is applied. Further, the edge of the socket opening of the socket body 10 with respect to the base 18a of the cylindrical portion 18 has a protrusion 10b that hangs downward as shown in FIG. ). Mounting part 23 and hook part 2
The inner surface of 6 has an inclined surface 27 so that a ball lamp 13' can be attached as shown in FIG. It is designed to serve as a guide when hooking it up.

A pair of extension plates 30 protrude on the outer side of the socket body 10 in a direction in which the heat dissipation hole 20 is not located, more precisely, in a tangential direction that coincides with a direction at 45 degrees to a direction including the mounting part 23 and the hook part 26. (Figure 3),
A pair of terminal mounting bosses 31 are provided inside the extension plate 30 at a distance from the outer surface of the socket body 10, and the upper corner edge of the extension plate 30 forms a notch 32 consisting of a vertical surface and an inclined surface. ing.

The terminal portion 11 is a rectangular terminal box 33 (Fig. 7).
An opening 34 is formed on the top surface of the terminal box 33, a communication step 35 is formed on one side of the opening 34, and a mounting hole 36 is provided to protrude from the top surface of the terminal mounting boss 31. An electric wire insertion hole 37 is formed on the upper side, and a release hole 38 is formed on the lower side. The socket connection part 39, which uses a terminal board as an example, has a strip-shaped plate in a vertical position in the width direction, and has horizontal pieces 4 on the upper and lower edges of both ends.
0 and 41 extend in the same direction, and the quick-tie screw 42 is caulked and fixed by a caulking portion 43 so that the gap between the quick-tie screw 42 and the lower horizontal piece 41 faces the wire insertion hole 37. Further, a support piece 44 is provided vertically from the center portion, and a cut portion 45 is formed in the support piece 44. The inside of the terminal box 33 has a partition 4 in the center.
6, and support piece support grooves (not shown) on both sides.
is formed. Moreover, the notch 3 of the extension plate 30
A protrusion 47 that faces 2 is formed on the side plate. The terminal section 11 is attached by bringing the outer surface of the terminal box 33 into contact with the side edge of the extension plate 30 and attaching the mounting hole 3
6 is placed on the terminal attachment boss 31, and at this time, the projection 47 engages with the notch 32. Then, the connecting screw 49 is passed through the mounting hole 36 through the cover 48 and is screwed into the terminal mounting boss 31 to be mounted.

When the terminal portion 11 is positioned in the socket body 10, the recess 12 of the socket body 10 and the opening 34 of the terminal portion 11 communicate with each other laterally through the communication step 35, and the terminal connection between the middle spring 14 and the contact spring 15 is established. The portions 14a, 15a and the pair of socket connection portions 39 are connected by a connection body 50, which is an example of a wire. At this time, terminal connection parts 14a, 15a
is soldered, and the socket connection part 39 is cut and bent part 4.
Insert and caulk the connecting body 50 into 5. In order to ensure the insulation distance between the pair of connectors 50, a connector recess 51 and a pair of ribs 52 are formed in the communication step 35 of the opening 34, and a partition protrusion 53 is formed in the socket body 10. There is. The cover 48 has a shape that closes the recess 12 and the opening 34,
A protrusion 54 separating the pair of socket connection parts 39 is formed on the back side, a recess 55 is formed to escape the pair of ribs 52, and a presser protrusion for pressing down the terminal connection parts 14a, 15a of the middle spring 14 and the contact spring 15 is formed. 56, and mounting holes 57 are formed in portions located on both outer sides of the presser projection 56. When the cover 48 covers the concave portion 12 and the like and is tightened with the connecting screw 49, the terminal portion 11 is attached to the socket body 10 in the shape of a sanderch.

With this structure, this lamp socket has the following effects. (1) Since the terminal portion 11 is arranged on the side of the socket body 10, the height of the socket can be reduced.

(2) Terminal connection part 14 on the back of the socket body 10
Since the concave portion 12 in which the terminal portions a and 15a are arranged is formed, heat conduction to the terminal portion 11 is difficult to be conducted, and the temperature of the terminal portion 11 can be reduced.

(3) Ease of assembly is achieved because electrical parts for the socket can be installed from one direction on the back.

(4) Terminal box 33 of socket body 10 and terminal section 11
By forming these into separate structures, the mold structure of the molded part becomes simple and manufacturing becomes easier.

(5) When the socket main body 10 and the terminal box 33 are constructed separately, the conduction of lamp heat to the terminal box 33 can be reduced by connecting them with a gap between them.

(6) Terminal part 11 with socket body 10 and cover 48
By fixing the cover 48 in the form of a sanderch, the connecting parts can be omitted and the strength of the terminal portion can be improved, and the cover 48 can be reinforced.

(7) A pair of ribs 56 are formed on the back surface of the cover 48 to hold down the terminal connection parts 14a, 15a of the contact spring 15 and the middle spring 14, and screw mounting holes 57 are formed at a wider interval than the ribs 56, so that it will not deteriorate over time. Therefore, the cover 48 will not loosen or protrude outward. That is, cover 4
Since 8 is made of plastic, a difference in expansion and contraction occurs between the rib side and the surface side due to aging, and the rib side deforms to become convex. At this time, the terminal connecting portion 14 of the spring 15 and the middle spring 14 is further supported by the connecting screw 49 and the rib 56 makes contact with the spring 15 and the inner spring 14.
You will be able to press a and 15a.

As mentioned above, the lamp socket of this invention is
a socket body having a terminal connection portion on the back surface; a terminal portion having a socket connection portion disposed on the rear side of the socket body and aligned with the terminal connection portion of the socket body; and the terminal connection portion and the socket connection portion. a connecting body for interconnecting the terminal connecting parts, a cover covering the terminal connecting part, the connecting body and the socket connecting part; Since it is equipped with a connecting screw that is clamped between the socket body and the socket body, it has the following effects.

That is, since the connecting body connecting the socket body and the terminal portion is covered with the cover, the connecting body does not come out. Furthermore, since the terminal connection portion and the socket connection portion of the connection body are connected in the same direction, the connection work is facilitated. Furthermore, since the cover and terminal section are attached to the socket body using connecting screws, the structure is simpler than before, and the connecting screws can be used both for attaching the cover and for attaching the terminal section, eliminating the need for connecting parts for the terminal section. The number of parts can be reduced, and since the terminal part is sandwiched between the cover and the socket body in a sandwich-like manner using connecting screws, the mounting strength of the terminal part can be increased.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted sectional view of a downlight to which the first embodiment of this invention is applied, Fig. 2 is a plan view of the lamp socket, Fig. 3 is a plan view with the cover removed, and Fig. 4 is a partially exploded perspective view showing the socket mounting part, FIG. 5 is a partial front view showing the hooking part of the socket, FIG. 6 is a partial perspective view of the rear side of the socket body, FIG. 7 is an exploded perspective view, and FIG. The figure is a partial sectional view. 9...Lamp socket, 1...Socket body,
11...Terminal part, 14a, 15a...Terminal connection part, 39...Socket connection part, 48...Cover,
49... Connection screw, 50... Connection body.

Claims (1)

[Scope of claims for utility model registration] (1) A socket body having a terminal connection part on the back side,
a terminal portion disposed on the rear side of the socket body and having a socket connection portion lined up with the terminal connection portion of the socket body; a connecting body that connects the terminal connection portion and the socket connection portion to each other; A cover that covers the connecting portion, the connecting body, and the socket connecting portion; and a connecting screw that is screwed into the socket body through the cover and the terminal portion to sandwich the terminal portion between the cover and the socket body. Equipped with lamp socket. (2) The cover has a holding rib that comes into contact with the terminal connection part, and mounting holes of the cover through which the connecting screws are passed are formed on both sides of the holding rib. Lamp socket described in ).