JPS5825584Y2 - Swan type lighting tube socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a swan-type lighting tube socket, and the installation of a cover to cover the exposed terminal portion is related to the structure.

In conventional lighting tube sockets of this kind, the structure in which the terminal part is exposed from the socket body makes it impossible to attach a cover to cover the terminal part, and in order to prevent the terminal part from being exposed, it is necessary to mount the terminal part inside the socket body. Furthermore, in a structure in which the terminal portion is disposed within the socket body, a lead wire must be connected to the terminal portion in advance, which has the disadvantage of poor workability.

In addition, in conventional lighting tube sockets of this kind, the back plate that covers the back opening of the socket body is fixed with multiple screws, making it difficult to work. It did not have an insulating structure, and had drawbacks such as the risk of short-circuiting of the lead wires.

The present invention was developed in view of the above-mentioned drawbacks.The cover is detachably held by a protrusion protruding from the upper part of the socket body, and the back plate can be held by attaching the cover. The insulation creepage distance is taken to prevent the risk of short circuits, and to make work such as attaching the cover easier, and by removing the cover, the terminal part is exposed from the socket body, making it easier to connect the lead wire. To provide a swan type lighting tube socket which has improved safety by making it possible to cover the terminal part with a cover.

The structure of the swan-type lighting tube socket of the present invention is that the socket body has an open back surface and a contact piece installation section on the left and right that is partitioned by a joint wall provided approximately in the center. A locking groove for locking the lower part of a pair of elastic contact pieces respectively arranged in each contact piece arrangement part is formed in the lower part of the contact piece arrangement part, and each of the elastic contact pieces is formed in the upper part of both contact piece arrangement parts. A cut groove is formed in which the upper end terminal portion of the contact piece protrudes upward, and a terminal insertion portion of the lighting tube is formed on one end side of the front surface in correspondence with each of the contact piece placement portions, and the terminal of the lighting tube is inserted into the upper end of the contact piece. A locking hole that locks in contact with the elastic contact piece is formed respectively, and a protrusion is integrally provided on the upper part of the socket body, which has an engagement recess formed on the front side and an engagement protrusion formed on the back side. , a locking recess for locking a locking protrusion formed on the upper part of the back cover that closes the rear opening of the socket body is formed at the lower part of the locking protrusion of the protrusion, and a locking groove of the socket body is formed. The upper end terminal portions of a pair of elastic contact pieces whose lower ends are locked and protrude outward from the grooves are disposed on both sides of the protrusion, and the upper end terminal portions of the pair of elastic contact pieces are engaged with the inner surface of the cover that is fitted onto the upper part of the main body. A first retaining portion that engages with the recess and a second engaging portion that engages with the engaging protrusion are integrally formed.

Next, the structure of an embodiment of the present invention will be explained with reference to the drawings.

Reference numeral 1 denotes a socket body molded from synthetic resin, which is formed in the shape of a flat picture with an opening at the back, and around the periphery of this back opening 2, except for the upper part, there is a protruding edge 4 into which an insulating back plate 3 is fitted. It is formed.

Further, contact piece placement portions 6, 6 are formed on the left and right sides, which are partitioned by an insulating wall 5 integrally provided approximately at the center of the main body 1.

In addition, elastic contact pieces 7 are provided at the bottom of each of the contact piece placement portions 6, 6.
, 7 are formed in an abbreviated shape, and terminal portions 9 of the contact pieces 7, 7 are formed on the tops of the contact piece arrangement 2 parts 6, 6.
, 9 are formed to project outwardly.

Further, on the front surface of the main body 1, locking holes 12, 12 are formed point-symmetrically, each having a terminal insertion portion 11 of a lighting tube widened at one end.

Also, on the front of this main body 1 is an annular fitting guide edge 1 for the lighting tube.
3 are integrally formed, and a punch hole 14 is further formed in the lower rear surface of the insulating wall 5 of the main body 1.

Further, a protrusion 15 is integrally formed at the center of the upper surface of the main body 1 and located between the locking grooves 10, 10.

An engagement recess 16 is formed on the front surface of this protrusion 15 .

Further, an engagement protrusion 17 is formed on the back surface of the protrusion 15 to protrude from the back surface of the main body 1, and a locking recess 18 is formed at the lower part of the engagement protrusion 17 on the same surface as the back surface of the main body 1.

The locking recess 18 is formed in communication with the engagement recess 16 and can be molded using a two-split mold.

Further, a mounting projection 19 is integrally formed and protrudes from the lower front surface of the main body 1.

Next, the back plate 3 is formed into a shape that fits into the rear protrusion 4 of the main body 1, and the locking recess 18 is formed on the upper edge of the back cover 3.
A locking protrusion 21 is formed to project.

Further, at the lower ends of the elastic contact pieces 7, 7, locking portions that are locked in the locking grooves 8, 8 of the main body 1 are formed in a substantially angular shape.

Further, on the upper part of the elastic contact pieces 7, 7, there is a contact piece arranging portion 6,
A locking portion (not shown) that locks onto the upper portion of the holder 6 is bent into a substantially U-shape.

Moreover, the upper ends of these elastic contact pieces 7, 7 are protruded from the cut groove 10 by the projection 1.
Terminal portions 9 are formed to protrude along both sides of 5.

The lower end locking portions of the elastic contact pieces 7, 7 are locked in the locking groove 8, the upper end locking portions are locked in the inner peripheral edge of the cut groove 10, and the middle portions face the locking holes 12, 12. The terminals of the lighting tubes (not shown) that are locked in the locking holes 12, 12 are elastically contacted.

Next, reference numeral 23 denotes a cover molded from a synthetic resin having elasticity, which is formed in a picture shape so as to fit over the upper end of the main body 1, and has terminal portions 9 of the elastic contact pieces 7.7 at both ends. Cutouts 24 are formed through which lead wires connected to the respective ends are led out.

A first retaining portion 25 is integrally formed on the front inner surface of the cover 23 to be engaged with the engaging recess 16 formed in the protrusion 15 of the main body 1 when the cover 23 is fitted. A second retaining portion 26 that is engaged with the engaging protrusion 17 of the protrusion 15 is integrally formed on the inner surface.

Also, the first and second engaging portions 25.2 of this cover 23
The lower surface of 6 is formed into an inclined guide surface 27, and the upper surface is formed into a horizontal retaining surface 28.

Furthermore, molded holes 31 are formed in the upper surface of the cover 23 for forming the first and second engaging portions 25,26.

Next, the operation of this embodiment will be explained.

The locking protrusion 21 of the back plate 3 is inserted into the locking recess 18 on the back side of the socket body 1 and fitted inside the protrusion 4.

Next, when the cover 33 is fitted to the upper part of the main body 1, the first retaining portion 25 is guided by the guide surface 27, and the engaging surface 28 is engaged with the engaging recess 16 of the protrusion 15 due to elastic deformation of the cover 23. , the second retaining portion 26 is guided by the guide surface 27 and the engaging surface 28 is engaged with the engaging protrusion 17 of the protrusion 15 by elastic deformation of the cover 23.
is engaged.

Next, the lower part of the back plate 23 is fixed with a fixing device 30 such as a screw that is screwed into the screw hole 14 of the main body 1.

According to the present invention, an engagement recess is formed on the front side of the protrusion formed on the socket body, and an engagement protrusion is formed on the back side,
Since the cover to be fitted to the main body has a first retaining part that is engaged with the engaging recess and a second retaining part that is engaged with the engaging protrusion, the cover can be fitted into the socket main body. The cover can be attached by simply attaching the cover, and the terminal part exposed from the top of the socket body can be covered with the cover. Also, by removing the cover, the terminal part of the elastic contact piece is exposed from the top of the socket body, so the lead can be removed. It is easy to connect wires, and the terminal part of the elastic contact piece is covered with a cover, so it is safe. Also, this terminal part is arranged on both sides of the protrusion, so the insulation creepage distance can be increased, and the elastic The lower end of the contact piece is locked in the locking groove,
By engaging the upper end with the cut groove, it is attached to the socket body and held by the back plate, and this back plate is also held in the locking recess of the protrusion, reducing the need for fixing devices such as screws to attach the back plate. , the workability of connecting lead wires, attaching terminal covers, etc. is improved and can be obtained at low cost.

[Brief explanation of drawings]

Fig. 1 is a front view of a lighting tube socket showing an embodiment of the present invention with the cover removed; Fig. 2 is a front view of the same with the cover attached; Fig. 3 is an exploded vertical side view of the same; FIG. 4 is a perspective view of the socket main body. 1...Socket body, 2...Back opening, 3...Back cover, 5...Insulating wall, 6...
...Contact piece arrangement part, 7...Elastic contact piece,
8...Latching groove, 9...Terminal part, 10.
... Cut groove, 11 ... Terminal insertion part, 12.
...Locking hole, 15...Protrusion, 16...
...Engagement recess, 7...Engagement protrusion, 18...
...Latching recess, 21...Lock protrusion, 23...
...Cover, 25...First engaging portion, 26
...Second holding part.

Claims (1)

[Scope of utility model registration request] The socket main body has an open back surface and a left and right contact piece placement area separated by an insulating wall provided approximately in the center, and a contact piece placement area is provided at the bottom of both contact piece placement areas, respectively. A locking groove for locking the lower portions of the pair of elastic contact pieces arranged therein, and a cut groove in the upper part of both of the contact piece placement parts for causing the upper end terminal portion of each of the elastic contact pieces to project upward. A terminal insertion portion of the lighting tube is formed on one end side of the front surface in correspondence with each of the contact piece placement portions, and the terminal of the lighting tube is locked in a state in contact with the elastic contact piece. Each locking hole is shaped,
An engagement recess is formed on the front surface of the socket body, and a protrusion in the form of an engagement protrusion is integrally provided on the back surface,
A locking recess for locking a locking protrusion formed on the upper part of the back cover that closes the rear opening of the socket body is formed at the lower part of the locking protrusion of this protrusion, so that the socket body can be locked. The upper end terminal portions of a pair of elastic contact pieces whose lower ends are locked in the grooves and protrude outward from the grooves are disposed on both sides of the protrusion, and the upper end terminal portions of the pair of elastic contact pieces are fixed on the inner surface of the cover fitted to the upper part of the main body. A swan type lighting tube socket characterized in that a first retaining part that engages with the mating recess and a second retaining part that engages with the engaging protrusion are integrally formed.