JPH0124816Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a lighting device, and more specifically, to a socket cover that is removably attached to a socket body provided in the device body, and which connects the socket body and the socket cover. This invention relates to a fixing structure for a connecting spring.

[Background technology]

Generally, as shown in FIG. 11, this type of lighting equipment has a pair of socket bodies (not shown) each having a socket at both ends of an elongated equipment body 1.
is provided, and a straight tube fluorescent lamp 3 is held between both socket bodies. A socket cover 4 is fitted over the socket body, and a substantially C-shaped connection spring 5 as shown in FIG. 11 is used to attach the socket cover 4 to the socket body. The connecting spring 5 is formed by bending a metal band plate so that the opening is narrower than the inner part, and surrounds a cylindrical connecting protrusion (not shown) protruding from the socket body. The socket cover 4 is attached to the socket main body by being connected to the cylindrical connecting protrusion. Incidentally, in order to attach this connecting spring 5 to the socket cover 4, a fixing screw 7 is used which is screwed into a boss 6 provided protruding from the inner circumferential surface of the socket cover 4. However,
A boss 6 that is relatively large enough to fit the fixing screw 7 is required, and since the socket cover 4 is a molded product of synthetic resin, the wall thickness increases near the boss 6 and sink marks are formed. The problem is that it is easy. In order to solve such molding problems, it is necessary to increase the thickness of the entire socket cover 4, which raises the problem of increased material cost. Further, when screwing the fixing screw 7 into the boss 6, there is a problem that the boss 6 may crack if the tightening torque is too large.

[Purpose of invention]

The present invention has been developed in view of the above points, and its main purpose is to provide a lighting fixture in which a connecting spring can be easily fixed to a socket cover without using a fixing screw. Located in
Another objective is to reduce cost by reducing the overall wall thickness of the socket cover.

[Disclosure of invention]

(Embodiment) As shown in FIG. 11, the device main body 1 is formed into an elongated shape, and a pair of tube-shaped fluorescent lamps 3 are connected to the lower surface of both ends of the device in the longitudinal direction. A rectangular parallelepiped-shaped socket body 2 (see FIG. 8), each provided with a socket, is fixed to the instrument body 1 in such a manner that it extends in the width direction of the instrument body 1. A pair of straight tube fluorescent lamps 3 are held between both socket bodies 2, and as shown in FIG. A connecting protrusion 8 is provided in a protruding manner. A socket cover 4 is fitted onto the socket body 2 to cover the outer and lower surfaces of the socket body 2.
The socket cover 4 is formed into a box shape with its upper and inner sides open.

The above-mentioned connecting protrusion 8 is provided on the inner bottom surface of the socket cover 4.
As shown in FIGS. 1 and 2, a connecting spring 5 is fixed to the connecting spring 5, which is detachably connected to the connecting spring 5. As shown in FIGS. It is formed in a curved manner. The connecting spring 5 is formed so that its upper end is narrower than its lower end, and its opening end is curved outward so that the inner peripheral surface of the opening is smoothly curved. The lower end of the connecting spring 5 is smoothly curved so as to be convex downward, and is bent so as to form a corner 9 at the upwardly rising portion.

A plurality of holding ribs 11 to 14 are protruded from the inner bottom surface of the socket cover 4, and the lower end of the connecting spring 5 is fixed to the socket cover 4 by these holding ribs 11 to 14. Figures 1 to 6
As shown in the figure, the holding ribs 11 to 14 include a first holding rib 11 protruding from the center of the inner bottom surface of the socket cover 4 in the left-right direction, and three types of holding ribs 11 provided on the left and right sides of the first holding rib 11, respectively. retaining ribs 12-1
4, and a connecting spring 5 is disposed between fourth retaining ribs 14 provided on the outside. That is, the fourth holding rib 14 has a substantially L-shaped horizontal cross section, and the outer surface of the connecting spring 5 comes into contact with the inner surface of the fourth holding rib 14 . This positions the connecting spring 5 in the left-right direction. Since a corner 9 is formed at the lower end of the connecting spring 5, this corner 9 comes into contact with the fourth holding rib 14, so that the connecting spring 5 Rotation in the circumferential direction is stopped. The first holding rib 11 extends from the upper end of the vertical piece 11a standing upright on the inner bottom surface of the socket cover 4 toward the open side of the socket cover 4, and extends from the horizontal piece 11b.
The second holding rib 12 and the third holding rib 13 are respectively formed in a substantially L-shape with an extended base piece 12a, which is provided upright on the inner bottom surface of the socket cover 4.
A positioning protrusion 12b, 1 is provided at one end of the upper surface of the socket cover 4 near the open side surface of the socket cover 13a.
3b is formed into a substantially L-shape projecting upward, and in the protruding direction of the horizontal piece 11b of the first holding rib 11, the vertical piece 11a of the first holding rib 11
, the second holding rib 12 and the third holding rib 1
The positioning protrusions 12b and 13b of 3 are the connecting springs 5
are spaced apart from each other by a distance approximately equal to the width of. Further, the upper surface of the base piece 12a of the second holding rib 12 is located above the lower surface of the horizontal piece 11b of the first holding rib 11, and the base piece 13 of the third holding rib 13
The upper surface of a is formed to be located above the upper surface of the base piece 12a of the second holding rib 12.
The upper surfaces of the base pieces 12a, 13a of the second holding rib 12 and the third holding rib 13 are sloped surfaces rising from the inside toward the outside.
Recesses 12c,
13c is formed by bending the connecting spring 5 at the center in the width direction of the connecting spring 5, and a reinforcing rib (not shown) running in the longitudinal direction of the connecting spring 5.
are adapted to engage with these recesses 12c, 13c.

However, when the lower end of the connecting spring 5 is placed between the left and right fourth holding ribs 14 and is bent to reduce the opening width of the connecting spring 5, as shown by the two-dot chain line in FIG. Horizontal piece 11b of first holding rib 11
If the external force that reduces the opening width of the connection spring 5 is removed after the connection spring 5 is placed on the top surface of the base pieces 12a and 13a of the second and third holding ribs 12 and 13, The lower end of the spring 5 is connected to the first holding rib 1 by the spring force of the connecting spring 5.
1 and the upper surfaces of the base pieces 12a and 13a of the second and third holding ribs 12 and 13, and the connecting spring 5 is fixed in position in the vertical direction. It is. Also,
The lower end of the connecting spring 5 is disposed between the vertical piece 11a of the first holding rib 11 and the positioning protrusions 12b, 13b of the second holding rib 12 and third holding rib 13. The position in the width direction is also fixed. In this way, the connection spring 5 is fixed in position by each of the holding ribs 11 to 14 in each of the front, back, left, right, top and bottom directions.

To attach the socket cover 4 to which the connection spring 5 is fixed as described above to the socket body 2,
The socket body 2 is inserted between the rear side wall of the socket cover 4 and the connection spring 5, and the connection spring 5 is connected to the connection projection 8 formed on the socket body 2, as shown in FIG. Further, a pair of left and right positioning ribs 15 are provided on the inner bottom surface of the socket cover 4 and protrude between the rear side wall of the socket cover 4 and the above-mentioned holding ribs 11 to 14. Since a pair of running left and right positioning ribs 16 are formed, when the socket cover 4 is attached to the socket body 2,
These positioning ribs 15 and 16 come into contact with the circumferential surface of the socket body 2, thereby preventing the socket cover 4 from shaking against the socket body 2.

In the above embodiment, the position of the connecting spring 5 in the front-back direction and the vertical direction is fixed by sandwiching the connecting spring 5 between the first holding rib 11, the second holding rib 12, and the third holding rib 13. However, as shown in Figure 9, the second retaining rib 1
Engaging protrusions 12d and 13 are formed on the upper surfaces of at least one of the base pieces 12a and 13a of the second and third holding ribs 13.
d, and the engagement protrusion 12d is provided on the connecting spring 5.
By drilling an engagement hole (not shown) that engages with the connection spring 13d, the position of the connection spring 5 can be fixed even more reliably. Further, as shown in FIG. 10, an engagement protrusion 11d is provided protruding from the lower surface of the horizontal piece 11b of the first holding rib 11, and an engagement hole (not shown) corresponding to the connection spring 5 is bored. The same effect can be achieved even if the

[Effect of idea]

As described above, the present invention includes a first retaining rib corresponding to the circumferential center of the connecting spring on the inner peripheral surface of the socket cover corresponding to the base of the connecting spring, and a first retaining rib in the circumferential direction of the connecting spring. and second holding ribs spaced apart on the left and right sides of the socket cover, and the first holding rib extends along the inner circumferential surface of the socket cover from the tip of the vertical piece erected on the inner circumferential surface of the socket cover. It is formed in a shape with a horizontal piece extending in the direction,
The second holding rib is formed in such a shape that a positioning protrusion protrudes from one place on the distal end surface of a base piece that is erected on the inner circumferential surface of the socket cover, and the second holding rib is formed in a shape such that a positioning protrusion protrudes from one place on the distal end surface of a base piece that is erected on the inner circumferential surface of the socket cover. The vertical piece of the first retaining rib and the second
The positioning protrusions of the holding rib are formed at a distance approximately equal to the width of the connection spring, and are connected between the inner surface of the horizontal piece of the first holding rib and the distal end surface of the base piece of the second holding rib. Since the base of the spring is elastically clamped, the connecting spring can be easily fixed to the socket cover without using fixing screws by fixing the connecting spring with the plurality of retaining ribs formed on the inner peripheral surface of the socket cover. This has the advantage that the connection spring can be fixed to the socket cover with one touch without the need for screw tightening work, and that the socket cover will not break due to over-tightening of the screws. In addition, since the socket cover is only formed with a plurality of holding ribs, and the holding ribs do not need to be as thick as screw tightening bosses, there is no risk of shrinkage marks being formed when molding the socket cover. The wall thickness of the entire socket cover can be reduced, and as a result, costs can be reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main part of the present invention, Fig. 2 is a perspective view of the main part showing the function of the retaining rib of the above, Fig. 3 is a plan view of the socket cover used in the above, and Fig. 4 is a plan view of the socket cover used in the same. A front view of the socket cover, FIG. 5 is a sectional view taken along line X-X in FIG. 4, and FIG. 6 is a sectional view taken along line Y--
A Y-line sectional view, FIGS. 7 and 8 are explanatory diagrams of the same operation as above, FIGS. 9 and 10 are perspective views of main parts showing other examples of the above, and FIG. 11 is an example of the lighting fixture according to the present invention. FIG. 12 is a perspective view of a main part of a conventional example. 1 is a lighting fixture, 2 is a socket body, 3 is a fluorescent lamp, 4 is a socket cover, 5 is a connection spring, 11
is a first holding rib, 11a is a vertical piece, 11b is a horizontal piece, 12 is a second holding rib, 12a is a base piece, 12
b is a positioning protrusion.

Claims (1)

[Scope of utility model registration request] A device body, a socket body provided with a socket provided on the device body and coupled to the lamp, and a C-shaped leaf spring coupled to the coupling protrusion in a manner surrounding a cylindrical coupling protrusion protruding from the socket body. In a lighting fixture having a certain connection spring and a socket cover that is detachably fitted onto the socket body, the inner peripheral surface of the socket cover corresponding to the base of the connection spring has a shape corresponding to the circumferential center of the connection spring. A first retaining rib and a second retaining rib spaced apart to the left and right of the first retaining rib in the circumferential direction of the connection spring are provided upright, and the first retaining rib is provided upright on the inner circumferential surface of the socket cover. A horizontal piece is formed to extend in the width direction of the connection spring from the tip of the vertical piece along the inner circumferential surface of the socket cover, and the second holding rib is a base piece that stands up on the inner circumferential surface of the socket cover. is formed in a shape in which a positioning protrusion protrudes from one place on the distal end surface, and in the protruding direction of the horizontal piece of the first retaining rib, the vertical piece of the first retaining rib and the positioning protrusion of the second retaining rib are The base of the connecting spring is elastically sandwiched between the inner surface of the horizontal piece of the first retaining rib and the distal end surface of the base piece of the second retaining rib. Lighting equipment consisting of