JPH023265Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a socket structure for holding various lamps (bulbs) such as head lamps, tail lamps, and brake lamps of automobiles.

(Prior Art) Conventionally, this type of lamp socket has a cylindrical and conductive socket body 1, as shown in FIGS. The cap 4, which is the negative electrode of No. 3, is inserted. This cap 4 comes into contact with the inner surface of the socket body 1 and forms part of a ground circuit.

A positive electrode 8 is attached to the rear end of the base 4 of the lamp.
is insulated from the base 4 and protrudes, and this positive electrode 8 is connected to the tip of the positive lead wire 6 inserted from the opening 5 on the other side of the socket body 1 within the socket body 1. It comes into contact with the electrode terminal 7 attached to. Note that this electrode terminal 7
is held by an insulator 9 housed within the socket body 1 and is insulated from the socket body 1. The insulator 9
has a cylindrical part 9a and a flange part 9b, and each protruding piece 9c provided on the outer periphery of the flange part 9b is a rectangular sliding guide hole 1a bored in the socket body 1.
The insulator 9 and the socket body are fitted in the socket body 1 so as to be slidably housed along the axial direction, and forcibly bring the electrode terminal 7 into contact with the positive electrode 8. Spring receiving part 1 provided around opening 5 on the other side of
A coil spring 11 disposed between the two ends of the cap is always biased toward the base 4 side.

The socket main body 1 has a square locking hole 1b formed in the socket main body that is connected to the insulating housing 1.
The lead wire 6 is press-fitted into the insulating housing 15 in such a manner that it fits into the locking protrusion provided in the insulator 9, and in that state, the lead wire 6 connected to the electrode terminal 7 and the flange 9b of the insulator 9 are fitted and locked. The ground wire 12 connected to the ground terminal 13 is guided rearward from the opening 5 at the rear end of the insulating housing 15, and the sealing member 16 is inserted into the opening 5 at the rear end of the insulating housing 15. inserted into. Note that the lamp 3 has a base 4 connected to the socket body 1.
The protrusion 4a provided around the socket body 1 is inserted through the opening 2 and guided along the L-shaped notch 1c provided in the socket main body 1, and is attached to the socket body 1.

(Problems to be Solved by the Invention) However, in the conventional socket structure described above, it was extremely difficult to assemble the insulator 9 into the socket body 1. That is,
When the insulator 9 is inserted to the position of the sliding guide hole 1a formed on the rear end side of the socket main body 1 and each protrusion piece 9c is fitted, each protrusion piece 9c gets in the way, so the insulator 9 is forced to pass through. In order to do this, the insulator 9 must be inserted in an inclined shape, and even if the insulator 9 is inserted to the position of the sliding guide hole 1a, the socket body 1 and the socket body 1 must be connected in order to fit each protrusion into the sliding guide hole 1a. It is necessary to rotate the insulators 9 relative to each other so that they coincide with each other, which is not suitable for automation of work.

(Means for Solving the Problems) The gist of the present invention is that each protrusion on the flange portion of the insulator in the lamp socket is made into a thin flexible protrusion so as to have flexibility, and the insulator on the socket body The structure of the lamp socket is such that a positioning notch is provided on the edge of the opening on the press-fitted side on the same axis as the sliding guide hole in which the insulator is fitted and locked through each flexible protrusion. It is.

(Function) As a result, when each flexible protruding piece of the insulator is fitted into the positioning notch and the center of the insulator is pressed, only each flexible protruding piece is bent and press-fitted horizontally to guide the sliding It is inserted to the hole position, and each flexible protrusion is restored and fitted.

(Embodiments) The present invention will be described below based on embodiments shown in the drawings. 2A to 2D show the insulator 20,
This is for holding the electrode terminal 7 attached to the end of the lead wire 6 and the ground terminal 12 attached to the end of the ground wire 12, similar to the conventional example described above. The insulator 20 consists of a partially cut-out cylindrical part 21 and a disc-shaped flange part 22 integrally provided at the axial end of the cylindrical part 21, and is integrally formed of a synthetic resin material. ing. The cylindrical portion 21 and the flange portion 22 have a hole 23 having a diameter that allows the lead wire 6 to pass through but prevents the electrode terminal 7 from passing through and holds it. is open toward a large diameter hole 24 formed in the flange portion 21, and the through hole 23 communicates with the large diameter hole 24 via a passage 25.

In addition, the center of the flange portion 22 prevents short-circuiting of each lamp electrode when a single-lamp type (one positive electrode) lamp is mistakenly inserted into a two-lamp type (two positive electrodes) lamp socket. A protrusion 26 protrudes from the flange portion 22, and thin flexible protrusions 27 are provided symmetrically on the outer peripheral side of the flange portion 22 to provide flexibility.
A fitting and locking groove 28 is provided on the front and back surfaces of 2, into which the base of the ground terminal 13 is fitted and held.

Next, FIGS. 3A to 3C show a cylindrical socket body 30 made of a conductive metal material. The socket body 3
0 is the base 4 of the lamp 3 as in the conventional type described above.
has one opening 31 into which is inserted, and an opposite opening 32 through which the positive lead wire 6 and the ground wire 12 are drawn out. An L-shaped notch 33 for guiding and locking the coil spring 11 is provided, and a spring receiving portion 34 for the coil spring 11 is provided around the opening 32 on the opposite side. Further, in the middle of the cylindrical portion, there is a sliding guide hole 35 in which the flexible protrusion 27 of the insulator 20 is slidably fitted, and a locking hole 35 in which the locking protrusion of the insulating housing 15 is fitted and locked. A stop hole 36 is formed respectively, and a positioning notch 37 is provided at the opening edge on one opening 31 side, and the positioning notch 37 and the sliding guide hole 35 are on the same axis. It is set in.

The assembly of a lamp socket using the insulator 20 and socket body 30 having the above structure will be explained with reference to FIGS. 1A to 1C. First, it is necessary to attach the electrode terminal 7 with the lead wire 6 to the insulator 20 as shown in FIG. Since the lead wire 6 cannot pass through the opening 23, the lead wire 6 is first inserted through the large diameter hole 24 and the connecting terminal 17 passes through it, and then the lead wire 6 is slid in the passage 25 and inserted through the opening 23, and the electrode terminal 7 is inserted through the opening 23. The cylindrical part 21
keep it inside. Ground terminal 1 with ground wire 12
3, the base is fitted into the fitting and locking groove 28 provided on the outer periphery of the insulator 20 and held in a clamping manner.

The lead wire 6 and the ground wire 12 pass through the inside of the socket body 30 in which the coil spring 11 (not shown) is seated in the spring receiving part 34 and the inside of the insulating housing 15, and then pass through the inside of the opening 16a of the sealing member 16. Penetrate.

The opening 16a of this sealing member 16 is also connected to the connecting terminal 1.
Since the lead wire 6 cannot pass through, a groove 16b is provided from the opening 16a toward the outer periphery.
The ground wire 12 is inserted through the opening 16a by being pushed from the side through the groove 16b.

Next, as shown in FIG. 1B, the insulator 20
When the flexible projecting piece 27 is fitted into the positioning notch 37 of the socket body 30 and the center of the flange portion 22 is pressed with a tool (not shown), the flexible projecting piece 2
7 is bent and the insulator 20 is attached to the socket body 3.
It is press-fitted along the zero axis direction in a substantially horizontal state.

Then, as shown in FIG. 1C, the positioning notch 3
When the flange portion 22 of the insulator 20 reaches the sliding guide hole 35 located on the axis of the insulator 20, the bent flexible protrusion 27 is restored and protrudes into the sliding guide hole 35, and the coil spring 11 of the insulator 20 It is supported and is slidably engaged within the range of the sliding guide hole 35.

Thereafter, the socket main body 30 is press-fitted into the insulating housing 15 and integrated by the fitting hole 36 and the locking protrusion (not shown) provided in the insulating housing 15, and the Housing 15
The sealing member 16 is press-fitted into the opening on the rear end side to provide waterproofing and form an integrated lamp socket.

(Effects of the invention) As is clear from the embodiments described above, according to the structure of the lamp socket of the invention, when the insulator is attached to the socket body, the flexible protrusion of the inulator is fitted into the positioning notch of the socket body. Since it can be easily attached to the sliding guide hole of the socket body by simply press-fitting it, it is possible to improve work efficiency including mechanization.

[Brief explanation of the drawing]

FIG. 1A is an exploded perspective view showing the assembled state of the structure of a lamp socket according to an embodiment of the present invention, and FIG. 1B
is a longitudinal sectional view of the main part during assembly, Fig. 1C is a longitudinal sectional view of the main part when the assembly is completed, Fig. 2A is a front view of the insulator which forms the main part, Fig. 2B is a rear view of the same, Figure 2C is a side view of the same, Figure 2D is a longitudinal sectional view of the same, Figure 3
Figure A is a plan view of the main part of the socket body, Figure 3B is a sectional view taken along line bb in Figure 3A, Figure 3C is a sectional view taken along line cc in Figure 3A, and Figure 4 is a conventional An exploded perspective view showing an assembled state of a lamp socket structure according to an example, No. 5
The figure is a longitudinal sectional view of the same assembly when it is completed. Explanation of symbols, 6...Lead wire, 7...Electrode terminal, 11...Coil spring, 12...Ground wire, 1
3... Earth terminal, 15... Insulating housing, 1
6... Seal member, 17... Connection terminal, 20...
Insulator, 21... cylindrical part, 22... flange part, 23... port, 24... large diameter hole, 25...
...Passway, 26...Protrusion, 27...Flexible protrusion, 30
...Socket body, 31, 32...Opening, 33
... Notch, 34 ... Spring receiving part, 35 ... Sliding guide hole, 36 ... Fitting hole, 37 ... Positioning notch.

Claims (1)

[Scope of Claim for Utility Model Registration] A conductive socket body in which the base of the lamp is removably attached to one opening and is connected to the negative electrode of the inserted base, and the socket body is inserted into the opening on the opposite side of the socket body. The positive and negative lead wires are connected to each other, and the electrode terminal attached to the positive lead wire contacts the positive electrode of the lamp inserted into the socket body. An insulator is held so as to be insulated from the main body and housed in the socket main body, and an insulator is arranged between a spring receiving part provided in the socket main body and the insulator and forcibly brings the electrode terminal into contact with the positive electrode. a conductive coil spring that constantly presses the insulator toward the base of the lamp so that the insulator is in contact with the base of the lamp; The socket body has a disk-shaped flange portion, and a plurality of protrusions are provided on the outer periphery of the flange portion, and the protrusions are fitted and locked on the outer periphery of the intermediate portion of the socket body, so that the insulator can be slid in the axial direction. In the lamp socket provided with a sliding guide hole for movably holding the insulator, each protrusion provided on the flange portion of the insulator is a thin flexible protrusion so as to have flexibility, and the insulator of the socket body A structure of a lamp socket, characterized in that a positioning notch is provided on the edge of the opening on the side into which the lamp is press-fitted, on the same axis as the sliding guide hole.