JP4071174B2 - Lamp socket - Google Patents

Description

  The present invention relates to a lamp socket applied to, for example, a lighting fixture for a straight tube fluorescent lamp.

As a conventional lamp socket, in order to allow a lamp pin to be inserted into the pin hole from the peripheral side of the socket main body, there is a pin hole provided in a long hole shape with one end opened toward the socket main body peripheral side ( For example, see Patent Documents 1 and 2).
JP 2000-31558 A JP 2000-31557 A

  In a conventional example, in order to mount a straight tube lamp, the lamp is moved in a direction orthogonal to the lamp axis instead of being pressed in the lamp axis direction (so-called “sliding the lamp”, hereinafter referred to as slide mounting). Socket structure.

  Therefore, when actually mounting the lamp on a fixture installed at a high place, climb on the stepladder, slide the lamp caps on both ends of the lamp, and then attach the other lamp to another fixture. After moving down and moving, there was a problem that workability was poor because it was necessary to perform the same mounting.

  Accordingly, an object of the present invention is to provide a lamp socket capable of improving the lamp mounting workability.

In order to solve the above-mentioned problems, a lamp socket according to claim 1 of the present invention comprises a socket main body and a conductive plate having a lamp pin contact terminal which is disposed inside the socket main body and is elastically deformable. In the lamp socket connected to the lamp pin contact terminal at the lamp holding position, a lamp pin insertion opening is provided from the outer peripheral side surface of the socket body toward the lamp holding position, and the lamp pin is inserted along the lamp pin insertion opening. In addition to being made, it can be connected to the lamp pin contact terminal by being inserted from the front surface of the socket body,
The lamp pin contact terminal has a shape for sandwiching the lamp pins one by one, and a lamp pin insertion guide is provided at each edge of the lamp pin contact terminal where the lamp pin is inserted,
By sandwiching the lamp pin contact terminal into a part of the lamp pin contact terminal, the lamp pin contact terminal has a pitch correcting protrusion that pushes a gap between the lamp pin contact portions within a range not exceeding the diameter dimension of the lamp pin .

A lamp socket according to a second aspect of the present invention is the lamp socket according to the first aspect , wherein the lamp pin contact terminal is positioned by providing a fixed projection on the inner surface of the lamp pin contact terminal .
The lamp socket according to claim 3 is the lamp socket according to claim 2, wherein a projection for positioning the conductive plate is formed on the inner bottom surface of the socket body, so that the gap between the conductive plate and the inner bottom surface of the socket body is formed. Is provided with a space portion.

According to the lamp socket of claim 1 of the present invention, in addition to providing the lamp pin insertion opening from the outer peripheral side surface of the socket body toward the lamp holding position, the lamp pin is inserted along the lamp pin insertion opening, By inserting from the front of the socket body, it is possible to connect to the lamp pin contact terminal. When installing the lamp, near the one socket, press the lamp pin axially against the other socket and install it. The lamp mounting workability is improved by sliding the lamp pin on the opposite side. In particular, in a jointly arranged lighting fixture that is installed at a high place, when installing a lamp, it is possible to perform the lamp installation work of the appliances arranged on both sides without getting off the stepladder, so that the lamp installation workability is further improved. .
Since the lamp pin insertion guide is provided at the edge in each direction where the lamp pin of the lamp pin contact terminal is inserted, the lamp pin can be easily inserted into the lamp pin contact terminal. The lamp pin contact terminal has a shape that clamps one lamp pin at a time, and pushes the pitch correction protrusion into a part of the lamp pin contact terminal so that the gap of the lamp pin contact part of the lamp pin contact terminal does not exceed the diameter dimension of the lamp pin. Since it is widened, the dimensional accuracy of the pitch for enabling mounting from the lamp axial direction is improved, and the mounting capability of the axial lamp base is stabilized and improved. Further, since the accuracy is determined by the pitch correction protrusion, the dimensional accuracy of the lamp pin contact terminal may be low. Furthermore, because the pitch correction protrusion is sandwiched between the contact terminals, a contact load is generated in the lamp pin contact terminal when the lamp pin is not inserted, and a sufficient contact load is generated with a slight deformation stroke when the lamp pin is inserted. Can do.

According to the second aspect of the present invention , the fixing pin that contacts the inner surface of the lamp pin contact terminal is provided on the socket body, thereby positioning the lamp pin contact terminal .
According to claim 3, the inner bottom surface of the socket body, by forming a projection for positioning the conductive plate, is provided with the space portion between the inner bottom surface of the conductive plate and the socket body, the same effect as claim 2 In addition, no positioning member is required on the outside of the conductive plate, miniaturization and material cost reduction can be achieved, and moisture due to capillarity is difficult to collect between the socket body and the conductive plate. Insulation breakdown due to

  An embodiment of the present invention will be described with reference to FIGS. 1 is an exploded perspective view of a lamp socket according to an embodiment of the present invention, FIG. 2 is a perspective view of the assembled state, FIG. 3 is an explanatory view of incorporating a conductive plate in the embodiment of the present invention, and FIG. In embodiment of invention, sectional drawing of a socket main body, (b) is sectional drawing after the conductive plate incorporation of a socket main body, (c) is a front view of a socket main body.

  In FIG. 1, 1 is a socket body, 2 is a cover of the socket body, 3 is a conductive plate, 4 is a waterproof ring packing, 5 is a metal ring, 6 is a resin ring, and 7 is a lead wire packing.

As shown in FIG. 1, the socket body 1 and the cover 2 are formed of a thermoplastic resin. The conductive plate 3 has elastically deformable lamp pin contact terminals 9, and a pair of conductive plates 3 are arranged inside the socket body 1. The lamp pin contact terminal 9 is configured such that the lamp pin of the straight tube lamp is connected at the lamp holding position. That is, the lamp pin contact terminal 9 is positioned by providing the socket body 1 with the fixing projection 12 that contacts the inner surface of the lamp pin contact terminal 9. In addition, the pitch correction protrusion 13 is provided in the socket body 1 in the vicinity of the fixed protrusion 12 and the pitch correction protrusion 13 is sandwiched in a part of the lamp pin contact terminal 9 so that the distance between the lamp pin contact terminals 9 becomes the diameter dimension of the lamp pin. It is pushed out in a range that does not exceed. In addition, by making the socket main body 1 thermoplastic, the dimensional change of the lamp pin contact terminal 9 and the pitch correction protrusion 13 due to secular change can be made small.

  Moreover, as shown in FIG. 3, the lamp pin contact terminal 9 enables the lamp pin to be inserted from the front end side and the edge in the lamp axial direction. Therefore, lamp pin insertion guides 15a and 15b are provided by chamfering or the like at the edge of each direction in which the lamp pin of the lamp pin contact terminal 9 is inserted. Further, as shown in FIG. 4, by forming a protrusion 17 for positioning the conductive plate 3 on the inner bottom surface of the socket body 1, a space portion is provided between the conductive plate 3 and the inner bottom surface of the socket body 1. Yes. As a result, moisture due to capillary action is unlikely to collect between the socket body 1 and the conductive plate 3, and dielectric breakdown due to tracking between the conductive plates between different polarities is unlikely to occur. It is particularly effective when the waterproof socket is incompletely packed, and when the lamp and fixture are mounted vertically and vertically, it can be said that the socket placed below is safer. Further, the socket body 1 is formed with a slit mounting groove 14 and a drain hole (not shown).

  The cover 2 is attached to the socket body 1 having the above-described configuration and fixed by cold caulking 18 (FIG. 2). The cover 2 is provided with a pair of lamp pin insertion openings 19 from the outer peripheral side surface toward the lamp holding position so as to correspond to the pair of conductive plates 3. At this time, the cylindrical peripheral wall 1a of the socket main body is also provided with an opening 19 'that matches the lamp pin insertion opening 19. Thereby, in addition to the lamp pin being inserted along the lamp pin insertion opening 19, the lamp pin can be connected to the lamp pin contact terminal 9 by being inserted from the front surface of the cover 2 of the socket body 1.

  On the other hand, a screw 25 is provided on the outer surface of the peripheral wall portion 1 a of the socket body 1, and a screw 26 that is screwed into the screw 25 is provided on the inner surface of the resin ring 6. An edge portion is formed on the resin ring 6 so that the metal ring 5 comes into contact therewith. The waterproof ring packing 4 is made of an elastic material such as rubber. In the assembled state, one end side of the waterproof ring packing 4 is inserted between the peripheral wall portion 1a of the socket body and the cover 2, the metal ring 5 is disposed on the other end side, the resin ring 6 is covered, and the screw 26 is attached to the peripheral wall portion. The screw 25 of 1a is screwed and tightened. Thereby, the waterproof ring packing 4 is compressed and waterproof performance is ensured. The metal ring 5 is disposed between the resin ring 6 and the waterproof ring packing 4 to reduce friction when the resin ring 6 rotates.

  Next, a specific configuration of the conductive plate will be described. 5A is a front view of the conductive plate in the embodiment of the present invention, FIG. 5B is a side view, FIG. 6A is a front view of the conductive plate assembled in the embodiment of the present invention, and FIG. FIG. 7 is a plan view and FIG. 7 is an explanatory view of lamp pin insertion in the embodiment of the present invention.

  As shown in FIG. 5, the conductive plate 3 has a quick connection terminal 20 formed on the side opposite to the lamp pin contact terminal 9. The lamp pin contact terminal 9 has a substantially U shape that holds the lamp pins one by one, and a fixing projection 12 is inserted into the bent portion. This eliminates the need for a positioning member on the outside of the conductive plate 3 and achieves downsizing and material cost reduction. A1 is a dimension related to the slide mounting of the lamp, and B1 is a dimension related to the lamp mounting in the lamp axial direction. Further, as shown in FIG. 6, after the lamp pin contact terminal 9 is incorporated in the socket body 1 and the pitch correction protrusion 13 is inserted into the lamp pin contact terminal 9, the dimension A1 changes to the dimension A2 and the dimension B1 changes to the dimension B2. , A2> A1 and B2> B1 (FIG. 7A).

  During normal slide mounting, as shown in FIGS. 7A and 7B, the lamp pin 21 is guided by the lamp pin insertion guide 15 a and inserted into the lamp pin contact terminal 9. At this time, the dimension A2 changes to the dimension A3, and the dimension B2 changes to the dimension B3. The dimension B3 is the diameter of the lamp pin, and A3> A2 and B3> B2.

  When the lamp is attached in the axial direction, the lamp pin 21 is guided by the lamp pin insertion guide 15b and inserted into the lamp pin contact terminal 9 as shown in FIG. The lamp pin insertion guide 15b may be formed in a tapered shape having an inclined flat surface or a conical surface. The dimensional change of the lamp pin contact terminal 9 is the same as that of the slide mounting.

  FIG. 8 shows a contact load straight line with respect to the lamp pin contact terminal pitch. As shown in FIG. 8, the contact load can take a large value (a value of F2 or more) with a small stroke (A3-A2 or B3-B2) after the lamp pin contact terminal 9 is assembled in the socket body 1.

  At the time of the lamp mounting operation, as shown in FIG. 9, for example, at the time of mounting the actual lamps 24a and 24b to the connected lighting fixtures mounted at a high place, one socket 22 which is the fixture connecting portion A is used. A stepladder is climbed in the vicinity, and the lamp pin 21 is attached to the other socket 23 in the lamp axial direction, and the opposite lamp pin 21 is attached to one socket 22 by sliding. Thus, in the past, the stepladders were installed at two locations in the center of the lamp 24a and the center of the lamp 24b. However, the lamp 24a and the lamp 24b can be attached while the stepladder is installed at the position of the appliance connecting portion A. .

  Further, the resin ring 6 for attaching the waterproof ring packing 4 is tightened after the lamp is connected. This operation is conventionally performed at the lower center of each lamp, but can be performed at the appliance connecting portion A, so that the resin ring 6 is tightened over the operator's head, thereby improving safety. In this case, since the resin ring 6 of the other socket 23 cannot be tightened, it is necessary to move the stepladder to the position of the instrument connecting portion B, but the number of times of movement is almost the same as the conventional one.

  The lamp pin contact terminal may be configured to elastically hold a pair of lamp pins from both sides (see JP-A-11-214103).

It is a disassembled perspective view of the lamp socket of embodiment of this invention. It is a perspective view of the assembled state of FIG. In the embodiment of the present invention, it is an explanatory diagram of the incorporation of the conductive plate. (A) is sectional drawing of a socket main body in embodiment of this invention, (b) is sectional drawing after the electrically conductive board of a socket main body is integrated, (c) is a front view of a socket main body. (A) is a front view of the electrically-conductive board in embodiment of this invention, (b) is a side view. (A) is a front view of the conductive plate built-in state in embodiment of this invention, (b) is a cross-sectional top view. It is lamp pin insertion explanatory drawing in embodiment of this invention. It is a graph which shows the contact load straight line with respect to a lamp pin contact terminal pitch. It is action | operation explanatory drawing of the lamp socket of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Socket main body 2 Cover of socket main body 3 Conductive plate 9 Lamp pin contact terminal 12 Fixing protrusion 13 Pitch correction protrusion 15a, 15b Lamp pin insertion guide 17 Protrusion 19 Lamp pin insertion opening

Claims (3)

In a lamp socket, comprising: a socket body; and a conductive plate having a lamp pin contact terminal that is disposed inside the socket body and is elastically deformable, wherein a lamp pin of a straight tube lamp is connected to the lamp pin contact terminal at a lamp holding position. By providing a lamp pin insertion opening from the outer peripheral side surface of the socket body toward the lamp holding position, in addition to being inserted along the lamp pin insertion opening, the lamp pin is inserted from the front surface of the socket body, It can be connected to the lamp pin contact terminal,
The lamp pin contact terminal has a shape for sandwiching the lamp pins one by one, and a lamp pin insertion guide is provided at each edge of the lamp pin contact terminal where the lamp pin is inserted,
A lamp socket having a pitch correction protrusion that sandwiches a part of the lamp pin contact terminal to push a gap of a lamp pin contact portion of the lamp pin contact terminal within a range not exceeding a diameter dimension of the lamp pin . The lamp socket according to claim 1, wherein the lamp pin contact terminal is positioned by providing a fixed projection on the socket body that contacts the inner surface of the lamp pin contact terminal . The lamp socket according to claim 2, wherein a space portion is provided between the conductive plate and the inner bottom surface of the socket body by forming a protrusion for positioning the conductive plate on the inner bottom surface of the socket body .

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