JPS6331498Y2 - - Google Patents

Description

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

Conventionally, there have been lamp sockets in which the height of the socket is reduced by attaching the terminal portion directly to the side of the socket body (for example, Japanese Patent Publication No. 55-6995).

However, there was a drawback that the terminal portion was affected by lamp heat.

Therefore, the object of this invention is to provide a lamp socket which can reduce the height of the socket and avoid the effects of lamp heat.

A downlight to which an embodiment of this invention is applied is shown in FIGS. 1 to 8. That is, the appliance main body 1 is fitted into an embedded hole 3 in a ceiling 2 and is attached using a fixture 4. 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. and a connecting portion 14 between the middle spring 14 and the contact spring 15 that contacts the lamp 13 attached to the thread groove 10a.
a, 15a are positioned in the recess 12 by ribs 16 and fitting protrusions 17. Socket body 10
The socket of the cap housing chamber has a cylindrical part 18 for attaching a large diameter.
A semi-circular heat dissipation hole 20 is formed in the connecting part between the cylindrical part 18 and the socket main body 10 with reinforcing ribs 19, and a half-circumferential heat radiation hole 20 is formed in a part of the outer surface of the cylindrical part 18. As shown in Figures 1 and 2, the instrument body 1
A mounting portion 23 consisting of a groove 21 and a spring receiving portion 22 that engages with the hole edge of the hole 6 is formed to protrude in the radial direction and downward direction, and a hole edge engaging portion is formed on the opposite side of the mounting portion 23 as shown in FIG. A hook portion 26 is formed by a projection 25 that engages with the stop groove 24 and the rotation stopper recess 8 . As shown in FIG. 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 edge of the hole, and the spring 7 is used to hold the hole. In this mounting state, the center of the lamp socket 9 is eccentrically mounted relative to the center of the hole 6, and since the mounting portion 23 protrudes, the hole edge 6a around the mounting portion 23 (Fig. 4)
A heat radiation hole gap H is formed between the surface portion 18a of the cylinder portion 18 and the surface portion 18a of the cylindrical portion 18 facing thereto. Said mounting part 2
3 is subjected to a spring force, one of the ribs 19 19a is moved closer to the direction in which the spring force is applied to the cylindrical portion 18.
is reinforced. Further, the socket opening edge of the socket main body 10 has a protruding part 10b that hangs down and protrudes downward relative to the base part 18b of the cylindrical part 18, as shown in FIG.
A reflection plate mounting recess (not shown) is provided in this protrusion 10b.
to be able to form. The inner surfaces of the mounting portion 23 and the hook portion 26 have an inclined surface 27 so that a ball lamp 13' can be attached as shown in FIG. And he is trying to serve as a guide when hooking on the upper surface of the hooking part 26.

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, a communication step 35 is formed on one side of the opening 34, and a pair of arms 36 that are placed on the top surface of the terminal mounting boss 31 are provided protrudingly. An electric wire insertion hole 37 is formed on the upper side, and a release hole 38 is formed on the lower side. The terminal plate 39 has a strip-shaped plate in a vertical position in the width direction, has horizontal pieces 40 and 41 extending in the same direction from the upper and lower edges of both ends, and fastens the quick-tie screw 42 by caulking and fixing it with the caulking part 43. The gap between the lower horizontal piece 41 and the lower horizontal piece 41 is made to face 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 46 in the center, and support piece support grooves (not shown) are formed on both sides of the partition 46. Further, the protrusion 47 facing the notch 32 of the extension plate 30 is attached to the arm 36.
is formed. To attach the terminal portion 11, the outer surface of the terminal box 33 is brought into contact with the side end of the extension plate 30, and the pair of arms 36 is placed on the terminal attachment boss 31. At this time, the protrusion 47 is engaged with the notch portion 32. match.
Then, the mounting 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. In this case, the pair of arms 36 creates a gap Q between the terminal portion 11 and the socket body 10.
is formed.

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 gap Q, and the middle spring 14 and the contact spring 15 The connecting portions 14a, 15a and the pair of terminal plates 39 are connected by a wire 50. At this time, the connecting portions 14a and 15a are soldered, and the terminal plate 39 is caulked by inserting the wire 50 into the cut and bent portion 45. In order to ensure the insulation distance between the pair of wires 50, a wire 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.
The cover 48 has a shape that closes the recess space 12 and the opening 34, and has a protrusion 54 separating the pair of terminal plates 39 on its back side, and a pair of ribs 5.
A recess 55 is formed to escape the middle spring 14.
A presser protrusion 56 is formed to press the connecting portions 14a, 15a of the contact spring 15, and mounting holes 57 are formed in portions located on both outer sides of the presser protrusion 56.
This cover 48 covers the recess 12 and the like, and the screw 49
When tightened, the terminal portion 11 is attached to the socket body 10 in a sandwich-like manner.

With this structure, this lamp socket has the following effects. That is, (1) Because of the gap Q (Fig. 3) formed by the pair of arms 36 between the socket body 10 and the terminal part 11, the influence of lamp heat on the terminal part 11 can be reduced, and the branching of the power line can be reduced. The temperature rise at the point can be reduced.
Moreover, since the terminal portion 11 is provided on the outer side of the socket body 10, even if the gap Q is increased, the height of the socket will not be increased.

(2) Since the terminal portion 11 is attached to the terminal attachment boss 31 by supporting the side surface of the terminal portion 11 at the side end of the extension plate 30, stability is increased and the attachment strength of the terminal portion 11 is increased.

(3) Since notches 32 are formed in the corners of the extension plate 30 and protrusions 47 are formed in the terminal portions 11, the extension plate 3
This prevents chipping due to zero impact, and also helps prevent positioning and misalignment when installing terminals.

(4) Since the terminal portion 11 is disposed on the side of the socket body 10, the height of the socket can be reduced.

As mentioned above, the lamp socket of this invention is
Since the socket body includes a socket body having a cap accommodating chamber, and a terminal portion that is attached to the outside of the socket body via a pair of arms and forms a gap between the socket body and the socket body, the lamp heat in the socket body is dissipated through the gap. Because of this, it is difficult for heat to be transferred to the terminal part, and therefore the influence of lamp heat on the terminal part can be avoided. Moreover, since the terminal portion is located on the outside of the socket body, there is an effect that the height of the socket can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted sectional view of a lamp socket to which an embodiment of this invention is applied, Fig. 2 is a plan view of the downlight 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, 10...Socket body, 11...Terminal section, Q...Gap.

Claims (1)

[Claims for Utility Model Registration] (1) A socket body having a cap accommodating chamber, and a terminal portion attached to the outer side of the socket body via a pair of arms to form a gap between the socket body and the socket body. Lamp socket with. (2) The socket main body forms a pair of extending plates in the tangential direction of the outer circumferential portion, and the terminal portion is attached to the side end portions of the extending plates in a state of contact, and the terminal portion is attached to the corner edges of the extending plates. 2. The lamp socket according to claim 1, wherein a cutout having a vertical portion and an inclined portion is formed in the lamp socket, and the pair of arms includes protrusions that engage with the cutout.