JPS6010307Y2 - lamp socket - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a lamp socket, and its purpose is to facilitate the connection of electric wires to the socket and to facilitate and automate the installation of the socket.

An embodiment of this invention is shown in FIGS. 1 to 11.

In this fluorescent lamp socket, a socket body 1 for positioning the parts and attaching it to the fixture body is formed by molding means as follows.

That is, the rear and bottom surfaces are open, the lamp pin mounting hole 2 is formed approximately in the center of the front surface 1a, and the top surface 1b and the mounting hole 2 are formed.
A lamp pin insertion slit 3 is formed between the top surface 1b and the top surface 1b.
A guide taper is formed with the slit 3 at the bottom, and the bottoms of the front surface 1a and both side surfaces 1c and ld are bulged out, and positioning ribs 4 are formed at the stepped portions on both side surfaces. Four opening notches 5 are formed, and a protrusion 6 is formed to the extent that the electric wire can be press-fitted in the middle part in the horizontal direction.
... is formed, and the opening side is the electric wire temporary holding part 5a and the bottom side is the electric wire press-fitting completion part 5b through the protrusions 6.

Also, inside the body 1 there are component positioning ribs 7...
...is formed.

A rotating body 9 with a pair of bin guide legs 8 facing the lamp pin mounting hole 2 inside the socket body 1 is inserted from the rear opening of the body 1, and comes into contact with the sides of the bin guide legs 8 to secure the lamp pin. A pressure contact terminal 11 having a pressure contact slit 14 formed by integrally bending the conductive plate 10 to be held and held is positioned on the mounting surface 1e side of the lower end of the body 1.

As shown in FIGS. 5 to 9, the pressure contact terminal 11 is made by bending a thin plate made of a conductive spring into a U-shape, and attaching a wire temporary holding portion 12 having an outer diameter width of the covered wire to the web 11a in an open shape. Two pressure welding slits 14 (one for branching) forming a pressure contact portion 13 having a width for pressure contact with the electric wire are formed on both end pieces 11bell connected to the bottom thereof, and are attached to both ends of the pressure contact terminal 11. A recess 15 is formed for both end pieces 11b and 11C.
A positioning piece 16 is bent outward at the tip of the positioning piece 16, and one end piece 11c is extended from the lower end, and the side of the extending part is bent so as to be perpendicular to both end pieces 11b and llc. A conductive plate 10 is formed, and an engagement notch 17 is formed on the upper edge of the conductive plate 10.
is formed to engage the tip of the other end piece 11b, and the tip of the conductive plate 10 forms a dogleg bent portion 10a to serve as a lamp pin holding portion, and furthermore, the tip of the other end piece 11b of the terminal 11 forms a dogleg bent portion 10a. A positioning piece 1B is formed.

Before inserting the rotating body 9, this pressure contact terminal 11 is inserted by engaging the recess 15 of the terminal 11 with the rib 7a of the body 1 from the rear opening of the body 1, as shown in FIG. 9, and positioning the terminal 11. Insert pieces 16 and 18 until they abut against the ribs of body 1.

At the same time, position the tip of the conductive plate 10 in the mounting hole 2 as shown in the figure.

A T-shaped insulating plate 19 is inserted into the rear opening of the socket body 1 as shown in FIG. 4, and a mounting plate 20 is placed over the insulating plate 19.

This mounting plate 20 is formed by stamping a steel plate whose surface is treated with vinyl chloride resin, and furthermore, a guide piece 21 and a mounting piece 22 are bent, and a caulking piece 23 is cut and raised on the mounting piece 22. A mounting hole 24 is formed in the mounting piece 22, and a pilot hole 25 for mounting to the instrument body is formed in the mounting piece 22.

To install the mounting plate 20, guide the guide piece 21 to the outer surface of the body 1 and enter the rear opening of the body 1.
The mounting screw 26 is passed through the mounting hole 24 and fixed.

In this state, the rear surface of the body 1 and the surface of the mounting plate 20 are flush with each other.

In this state, the end face of the positioning piece 16 of the press-contact terminal 11 comes into contact with the insulating plate 19, and movement in the opening direction is restricted.

The lamp socket constructed in this manner requires an assembly process in which the electric wire P is connected to the pressure welding slit 13 of the terminal 11 and the socket is attached to the appliance body 27.

That is, the electric wire P is connected by exposing the end of the covered electric wire P to the bottom surface of the body 1, supporting the end surface of the electric wire P on the insulating plate 19, and temporarily holding it in the electric wire temporary holding part 5a of the body 1 and the pressure contact terminal 11. Further, as shown in FIG. 11, the mounting piece 22 is supported by the support base 28 in a reversed state, and is press-fitted into the electric wire insertion completion part 5b of the body 1 and the pressure contact part 13 of the pressure contact terminal 11 using the press-fitting jig 29.

In this case, in the body 1, the covering part of the electric wire P passes over the protrusion 6 and is positioned at the completed part 5b, and in the pressure contact terminal 11, the connecting taper part between the temporary holding part 12 and the pressure contact part 13 serves as a cutting edge. cut into the insulation part of the wire and press contact part 13.
is directly pressure-welded to the electric wire and electrically and mechanically connected.

The load applied during this press-fitting is about 9 to 35 kg to the terminal 30, and is carried by the recess 15 of the terminal 11 as shown in FIG.

Next, when attaching the lamp socket to the appliance body 27, insert the caulking piece 23 into the slit 30 of the appliance body 27 and caulk it from the back side as shown in Fig. 10, or insert the caulking piece 23 into the slit and position it. Attach it to the pilot hole 25 using the tapping screw 31.

The lamp is mounted by inserting one of the lamp pins between the insertion slit 3 and the guide leg 8 and rotating the lamp so that it comes into elastic contact with the conductive plate 10 and is held there.

With this structure, this lamp socket has the following effects.

That is, (1) the pressure welding slit 14 of the pressure contact terminal 11
On the other hand, since recesses 15 are formed at both ends and are engaged with the socket body 1 that becomes the terminal block to bear the press-fit load during connection, deformation and buckling of other parts connected to the terminal 11 can be avoided. There is no need to worry, and even if the terminal is made of a thin plate, the load can be reliably received without being subjected to the load in the plate pressure direction.If a recess is formed in the horizontal vicinity of the pressure welding slit 14, the thinness of the thin plate allows the pressure welding to be carried out. By imparting elasticity to the portion 13, contact reliability during wire connection can be improved.

Furthermore, the engagement between the recess 15 and the socket body 1 is caused by the terminal 11
Since it serves as a positioning guide, assembly is simplified, and when the conductive plate 10 is formed into an integral bottom shape, the conductive plate 10 is positioned on the body 1 at the same time, and there is no misalignment due to press-fitting of the electric wires, so there is no adverse effect.

Furthermore, the width of the material does not increase compared to forming the concave portion 15 and forming the convex portion.

(2) Since the pressure contact terminal 11 is bent into a U-shape and the pressure contact slits 14 are formed on both end pieces so as to open in the web, there is a two-point contact, and the wire connection is reliable and reliability is increased.
In addition, by forming a recess 17 in the conductive plate 10 formed on one end piece 11c and making it a fixed piece that engages with the other end piece, even if the terminal 11 is made of a thin plate spring material etc., there will be no spring back during bending. Problems such as these can be easily solved, the correct terminal shape can be maintained, the strict dimensional accuracy required for the terminal 11 can be maintained, and press-fitting errors caused by the press-fitting jig can be avoided.

Furthermore, by aligning the center a of the conductive plate 10 that holds the lamp pin (Fig. 7) with the press-fitting center b of the terminal 11 (Fig. 7), the pair of conductive plates 10 of the socket can be symmetrically arranged as shown in Fig. 1. By arranging them, the same shape can be shared, and since the positions of the pressure welding slits 14 are aligned, the press-fitting jig 29 can be used at the same time when connecting the wires, and the position movement during use is simplified, promoting automation. This makes wiring work easier.

(3) Since the mounting plate 20, which serves as the back plate of the rear opening of the socket body 1, is guided by the guide piece 21 and inserted into the opening and screwed, assembly is easy, and the end surface of the mounting plate 20 is attached to the body 1. Since it is covered by the edge of the opening, even if the pre-coated material is simply punched and formed and attached without end face treatment, the appearance quality will not be impaired due to rust etc., and therefore the mounting plate 20 can be manufactured easily.

(4) Guide piece 2 of mounting plate 20 integrated with body 1
1, the mounting piece 22 is extended outward flush with the bottom surface of the body 1, and the caulking piece 23 is cut and raised parallel to the outside of the bottom surface, so when connecting wires, the socket must be held upside down as shown in Fig. 11. The mounting piece 22 can be hung on the support base 28 and wired to the pressure contact terminal under the support of the mounting piece 22. Also, since socket installation is performed by inserting the caulking piece 23 into the slit 30 of the device body 27, the caulking load is reduced. It does not add anything to the socket body, which is a molded product, and can be reliably caulked without causing cracks, etc., and the pressure welding connection and caulking installation can be automated in a series of work processes using press work.

Furthermore, since the caulking piece 23 is provided on the side surface of the socket, the height of the socket does not need to be increased.

Furthermore, since the caulking piece 23 has a surface parallel to the lamp axis, it has strength in the direction of the lamp axis that is applied when the lamp is attached.If the caulking piece 23 is placed closer to the front of the body 1, the body 1 may be damaged if the lamp falls during installation or transportation. 1 can be prevented from falling to the back, and the pilot hole 25 for positioning can be
It is possible to secure a space for providing the crimping, and it is possible to promote accuracy and automation of the crimping position.

On the other hand, the pilot hole 25 can also be used as a pilot hole for the self-tapping screw 31 for screw mounting.In this case, passing the caulking piece 23 through the slit 30 serves as a positioning guide when screwing, making installation easy and for small-scale production. It is convenient for cases where automatic installation is not required, such as for example, and for repair and replacement.

As described above, the lamp socket of this invention has a mounting piece that extends outward from the bottom of the socket body, and a caulking piece for mounting the body on the mounting piece. The simple structure allows for automatic installation without causing any problems, and the pressure welding connection work is made easy.Also, the overall length of the body does not need to be increased, and the width direction of the caulking piece is aligned with the axis of the lamp. This has the effect that the strength to prevent the socket from falling in the direction of the back surface during lamp attachment/detachment operation is strong and the socket spacing can be kept constant.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of this invention, Fig. 2 is a side view thereof, Fig. 3 is a bottom view thereof, Fig. 4 is an exploded perspective view of the back side thereof, Fig. 5 is a perspective view of a pressure contact terminal, Figure 6 is its front view;
Figure 7 is the right side view, Figure 8 is the back view of Figure 6, and Figure 9 is the rear view of Figure 6.
10 is a perspective view of the socket mounting process, and FIG. 11 is a front view showing the wiring process. 1... Socket body, 14... Pressure welding slit, 20... Mounting plate, 22...
Mounting piece, 23... Caulking piece, 25... Pilot hole.

Claims (2)

[Scope of utility model registration request] (1) A socket body 1 with a pressure welding slit 14 formed in the mounting surface 1e so that the longitudinal direction of the electric wire P pressed therein is the front-rear direction, and a pair of guide pieces 21 held on both sides of the socket body 1 a mounting plate 20 attached to the rear surface of the socket body 1, and the pair of guide pieces 2.
a mounting piece 22 that is bent and extended from the end of the socket body 1 and parallel to the mounting surface 1e of the socket body 1; Body mounting caulking piece 23 parallel to the axial direction
Lamp socket with. (2) The lamp socket according to claim 1, wherein the mounting piece 22 has a pilot hole 25 formed therein.