JP7223983B2 - sockets and lighting fixtures - Google Patents

Description

The present invention relates to sockets and lighting fixtures.

In Patent Document 1, a base pin of a lamp is displaced along an insertion hole of a socket, and a side surface of the base pin is brought into contact with an abutment piece to elastically deform a leaf spring member (spring contact), whereby the lead wire and the A lighting device is disclosed that is electrically connected to base pins.

Japanese Patent Application Laid-Open No. 2011-70901

By the way, in the invention of Patent Document 1, since the periphery of the leaf spring member is surrounded by the retaining wall, the movement of the leaf spring member is limited within the retaining wall. Therefore, when the leaf spring member is elastically deformed, the repulsive force of the leaf spring member becomes too strong and the lamp cannot be mounted smoothly. be.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to facilitate elastic deformation of the leaf spring member by devising a holding structure for the leaf spring member.

The present invention is directed to a socket for detachably attaching a light source unit, and has taken the following solutions.

That is, the first invention comprises a terminal section having an elongated pin insertion opening into which the pin terminal of the light source unit is inserted, and a contact housed in the terminal section and electrically connected to the pin terminal. a plate spring member extending along the longitudinal direction of the pin insertion opening; a first spring holding portion holding a first end portion on one end side of the plate spring member; a second spring holding portion that holds a second end portion on the other end side, wherein the plate spring member protrudes toward the pin insertion opening between the first end portion and the second end portion; and a bent portion that sandwiches the pin terminal with the contact portion of the conductive member, and the first spring holding portion is located on the opposite side of the pin insertion opening at the first end portion. It has a first supporting portion that supports the surface, and a first restricting portion that faces the first supporting portion with the first end interposed therebetween.

In the first invention, the terminal portion accommodates the plate spring member extending along the longitudinal direction of the pin insertion opening. A bent portion of the leaf spring member is bent so as to protrude into the pin insertion opening. A first end and a second end of the leaf spring member are held by the first spring holding portion and the second spring holding portion, respectively. The first spring holding portion has a first supporting portion and a first restricting portion facing each other in the thickness direction with the first end portion interposed therebetween.

By holding the first end and the second end of the leaf spring member in this manner, the peripheral portion of the bent portion can be freely moved in the thickness direction, and the leaf spring member can be elastically deformed smoothly. .

Further, by holding the first end and the second end of the leaf spring member in the thickness direction and allowing the leaf spring member to expand in the longitudinal direction, local stress is concentrated on the leaf spring member. can be restrained.

Furthermore, by holding the first end and the second end of the leaf spring member in the thickness direction, it is possible to suppress rattling of the leaf spring member in the thickness direction.

In a second aspect based on the first aspect, the first spring holding portion has an end portion on the second spring holding portion side of the first restricting portion that is located on the second spring holding portion side of the first support portion. is disposed closer to the second spring holding portion than the end of the .

In the second invention, the end of the first spring holding portion on the side of the second spring holding portion of the first restricting portion is closer to the second spring holding portion than the end of the first support portion on the side of the second spring holding portion. are placed in As a result, when the bent portion is elastically deformed, the first end rotates around the end of the first support portion on the side of the second spring holding portion as a fulcrum and assumes an inclined posture. It is possible to suppress the action of excessive stress.

In a third aspect based on the second aspect, the first spring holding portion has an end portion opposite to the second spring holding portion side of the first restricting portion at the second spring holding portion of the first supporting portion. It is arranged closer to the second spring holding portion side than the end opposite to the spring holding portion side.

In the third invention, the end portion of the first spring holding portion opposite to the second spring holding portion side of the first restricting portion is replaced with the end portion of the first support portion opposite to the second spring holding portion side. It is arranged on the side of the second spring holding portion. As a result, when the first end rotates about the end of the first support portion on the side of the second spring holding portion as a fulcrum and assumes an inclined posture, the first end is less likely to come into contact with the first restricting portion. Thus, it is possible to suppress the application of excessive stress to the first end.

In a fourth aspect, in any one of the first to third aspects, the first spring holding portion has an end portion opposite to the second spring holding portion side of the first restricting portion. It is arranged closer to the second spring holding portion than the end of the first support portion on the second spring holding portion side.

In the fourth invention, the end portion of the first spring holding portion on the side opposite to the second spring holding portion side of the first restricting portion is positioned at a second position relative to the end portion of the first support portion on the second spring holding portion side. Arranged on the side of the spring holding part. As a result, when the bent portion is elastically deformed, the first end rotates around the end of the first support portion on the side of the second spring holding portion as a fulcrum and assumes an inclined posture. It is possible to suppress the action of excessive stress.

Further, when the first end rotates about the end of the first support portion on the side of the second spring holding portion as a fulcrum and assumes a tilted posture, the first end is less likely to come into contact with the first restricting portion. , it is possible to suppress excessive stress from acting on the first end.

According to a fifth invention, in any one of the first to fourth inventions, the conductive member and the plate spring member are integrally formed.

In the fifth aspect, for example, the conductive member and the leaf spring member may be integrally formed by bending one conductive plate.

A sixth invention is a lighting fixture comprising the socket according to any one of the first to fifth inventions and a light source unit detachably attached to the socket.

In a sixth invention, a lighting fixture is constructed by detachably attaching a light source unit to the socket according to any one of the first to fourth inventions.

According to the present invention, the leaf spring member can be easily elastically deformed.

It is a side view which shows the structure of the lighting fixture which concerns on this embodiment. It is a top view which shows the structure of the socket seen from the terminal part side. FIG. 4 is a plan view showing the configuration of the socket when the cover of the terminal portion is removed; FIG. 3 is a plan view showing the configuration of a socket as seen from the mounting surface side of the light source unit; It is a side view which shows the state which attaches a light source unit to a socket. It is a side cross-sectional view showing an internal configuration of a terminal portion. FIG. 4 is a plan view for explaining a holding structure for a leaf spring member; FIG. 8 is a view equivalent to FIG. 7 showing a state in which the pin terminal is pressed against the bent portion; FIG. 8 is a view equivalent to FIG. 7 showing a state in which the pin terminal is sandwiched between the bent portion and the contact portion;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the following description of preferred embodiments is essentially merely an example, and is not intended to limit the present invention, its applications, or its uses.

As shown in FIG. 1, the lighting fixture 10 is embedded in, for example, the ceiling of a house or the like, and emits light downward. A lighting fixture 10 is attached to the mounting plate 1 . A terminal block 2 is provided on the mounting plate 1 . The lighting fixture 10 includes a fixture housing 11 , a light source unit 12 and a socket 20 .

The instrument housing 11 is composed of a bottomed cylindrical member that is open at the bottom. The fixture housing 11 is a mounting base to which the light source unit 12 is mounted, and also functions as a heat sink for dissipating heat generated by the light source unit 12 . The instrument housing 11 is made of a material with high thermal conductivity, such as aluminum. A plurality of radiating fins (not shown) are provided on the upper part of the equipment housing 11 .

The light source unit 12 has, for example, an LED (Light Emitting Diode) as a light emitting module. The light source unit 12 is supported inside the instrument housing 11 via a rotation support member 15 . The rotary support member 15 has a holding member 16 that holds the light source unit 12 and the socket 20 and a rotary support arm 17 that rotatably supports the holding member 16 . As a result, the light source unit 12 can be rotated to any posture and the light irradiation direction can be adjusted.

The light source unit 12 is composed of a lamp having a GX53 base, for example. The light source unit 12 is detachably attached to the socket 20 . External commercial power is input to the socket 20 via a power cable 18 (see FIG. 2) as a conductive wire. Power input to the socket 20 is supplied to the light source unit 12 .

As shown in FIG. 2 , the socket 20 has a flange portion 21 , a terminal portion 30 and a spacer portion 25 .

The flange portion 21 is composed of a flat member. A central opening 22 is formed at a radially central position of the flange portion 21 . A tubular portion 23 is erected on the peripheral portion of the central opening 22 of the flange portion 21 .

A pair of terminal portions 30 are provided on the surface of the flange portion 21 on which the cylindrical portion 23 stands. The pair of terminal portions 30 are arranged on the left and right in FIG. 2 with the central opening 22 interposed therebetween. The terminal portion 30 has a peripheral wall portion 31 (see FIG. 3) erected from the flange portion 21 and a lid body 32 covering an opening on the standing side of the peripheral wall portion 31 . A storage space is defined inside the terminal portion 30 by the peripheral wall portion 31 and the lid body 32 .

The terminal portion 30 is provided with a cylindrical cable insertion opening 33 into which the power cable 18 is inserted. The cable insertion openings 33 are opened in the peripheral wall portion 31 on one end side (upper end side in FIG. 2) of the terminal portion 30 in a direction orthogonal to the thickness direction.

As shown in FIG. 3 , the quick-connect terminal 40 (conductive member) and the leaf spring member 45 are housed inside the terminal portion 30 . An elongated pin insertion opening 34 is formed in the surface of the terminal portion 30 on the side of the flange portion 21 . The pin insertion opening 34 communicates with the inside of the terminal portion 30 . The pin terminals 13 of the light source unit 12 are inserted into the pin insertion openings 34 .

The quick-connect terminal 40 has a spring portion 41, a contact portion 42, and a conductive portion 43 (see also FIG. 6). The spring portion 41, the contact portion 42, and the conductive portion 43 of the quick-connect terminal 40 are integrally formed by bending one conductive plate. The spring portion 41 is composed of a locking spring. The power cable 18 is electrically connected to the quick-connect terminal 40 by being sandwiched between the spring portions 41 of the quick-connect terminal 40 .

The conductive portion 43 of the quick-connect terminal 40 on the left side in FIG. 3 extends so as to cover the pin insertion opening 34 . The contact portion 42 of the quick-connect terminal 40 on the left side is arranged at the lower end portion of the pin insertion opening 34 .

The conductive portion 43 of the quick-connect terminal 40 on the right side in FIG. 3 extends to the upper end portion of the pin insertion opening 34 . The contact portion 42 of the quick-connect terminal 40 on the right side is arranged at the upper end portion of the pin insertion opening 34 .

The leaf spring member 45 extends along the longitudinal direction of the pin insertion opening 34 (vertical direction in FIG. 3). The leaf spring member 45 has a bent portion 46 bent to protrude toward the pin insertion opening 34 . The pin terminal 13 is sandwiched between the contact portion 42 of the quick-connect terminal 40 and the bent portion 46 of the leaf spring member 45 . A detailed description of the leaf spring member 45 will be given later.

The spacer portions 25 are arranged at both ends of the pair of terminal portions 30 in the longitudinal direction. The spacer portion 25 is fastened and fixed to the holding member 16 (see FIG. 1) of the rotation support member 15 by fastening screws (not shown).

The power cable 18 is connected to the cable insertion opening 33 of the terminal portion 30 and routed through the gap between the tubular portion 23 and the spacer portion 25 . Here, the cable insertion port 33 has a part of the peripheral edge portion facing the spacer portion 25 cut out.

As a result, the power cable 18 can be pulled out from the notch portion of the cable insertion port 33 and routed in the gap between the tubular portion 23 and the spacer portion 25, so that the power cable 18 is forcibly bent. There is no need, and disconnection can be suppressed.

A pair of cable restricting portions 50 are provided between the left and right spacer portions 25 of the flange portion 21 . The cable restricting portion 50 has a standing portion 51 provided on the flange portion 21 and a hook portion 52 folded back at the tip of the standing portion 51 (see FIG. 5). By engaging the power cable 18 with the hook portion 52 , it is possible to restrict the power cable 18 from moving away from the flange portion 21 .

As shown in FIG. 4, the surface of the flange portion 21 to which the light source unit 12 is attached has an elongated pin insertion opening 34 into which the pin terminal 13 is inserted, and an opening into which a release pin (not shown) is inserted. A portion 24 is formed.

Then, the pin terminals 13 of the light source unit 12 are inserted into the pin insertion openings 34, and the light source unit 12 is rotated clockwise in FIG. As a result, the left and right pin terminals 13 can be electrically connected to the contact portions 42 of the left and right quick-connect terminals 40, respectively.

Here, as shown in FIG. 5, the outer peripheral surface of the light source unit 12 is formed with a fitting groove 12a. A fitting claw 21a (see FIG. 4) protruding radially inward is provided in the central opening 22 of the flange portion 21. As shown in FIG. Therefore, when the light source unit 12 is rotated with respect to the socket 20, the fitting claws 21a are fitted into the fitting grooves 12a, preventing the light source unit 12 from falling off in the axial direction. Thereby, the light source unit 12 is attached to the socket 20 .

As shown in FIG. 6 , a first space 35 and a second space 36 are provided inside the terminal portion 30 . 6 shows the internal structure of the left terminal portion 30 in FIG. The first space 35 communicates with the cable insertion port 33 . The cable insertion opening 33 extends radially outward (to the left in FIG. 6) from the peripheral wall portion 31 of the terminal portion 30 .

The second space 36 communicates with the pin insertion opening 34 . The pin insertion opening 34 opens in a direction intersecting with the cable insertion opening 33 (downward in FIG. 6). The second space 36 is positioned below the first space 35 .

The first space 35 and the second space 36 are partitioned by an insulating wall portion 37 . The insulating wall portion 37 is erected from the periphery of the pin insertion opening 34 , extends horizontally to cover the pin terminal 13 , and then extends upward toward the lid 32 . Between the upper end portion of the insulating wall portion 37 and the lower surface of the lid body 32, a gap is provided through which the conductive portion 43 of the quick-connect terminal 40 passes.

A spring portion 41 of the quick-connect terminal 40 is accommodated in the first space 35 . A contact portion 42 of a quick-connect terminal 40 is accommodated in the second space 36 . The pin terminal 13 moves in the second space 36 as the light source unit 12 rotates and is electrically connected to the contact portion 42 of the quick-connect terminal 40 .

The wires of the power cable 18 are exposed by peeling off the covering at the tip. By inserting the power cable 18 through the cable insertion opening 33 , the wires of the power cable 18 are sandwiched between the spring portions 41 of the quick-connect terminals 40 . As a result, the power cable 18 is electrically connected to the spring portion 41 of the quick-connect terminal 40 .

Here, since the spring portion 41 and the contact portion 42 of the quick-connect terminal 40 are connected by the conductive portion 43 , the power cable 18 and the pin terminal 13 are electrically connected via the quick-connect terminal 40 .

A release hole 38 is formed in the peripheral wall portion 31 on the left side of the terminal portion 30 in FIG. The release hole 38 is open at a position facing the spring portion 41 of the quick-connect terminal 40 . An opening 24 is opened on the opposite side of the flange portion 21 to the surface on which the terminal portion 30 is provided (lower side in FIG. 6). The opening 24 extends in a direction crossing the release hole 38 and communicates with the release hole 38 .

Here, when removing the power cable 18 from the spring portion 41 of the quick-connect terminal 40 , a release pin (not shown) is inserted from the opening 24 of the flange portion 21 toward the release hole 38 .

Then, the spring portion 41 of the quick-connect terminal 40 is pressed by the distal end portion of the release pin (not shown) to elastically deform the spring portion 41 . As a result, the engagement state between the power cable 18 and the quick-connect terminal 40 is released, and the power cable 18 can be pulled out from the cable insertion opening 33 .

The socket 20 having the quick-connect terminals 40 as shown in this embodiment may be, for example, a holder socket for a COB (Chip on Board) module.

<Regarding the holding structure of the leaf spring member>
As shown in FIG. 7 , the leaf spring member 45 is housed inside the terminal portion 30 . 7 shows the internal structure of the terminal portion 30 on the right side in FIG. The leaf spring member 45 extends along the longitudinal direction of the pin insertion opening 34 . The plate spring member 45 is held by a first spring holding portion 60 and a second spring holding portion 65 .

The first spring holding portion 60 holds the first end portion 45a on the one end side (the left side in FIG. 7) of the plate spring member 45. As shown in FIG. The second spring holding portion 65 holds the second end portion 45b of the other end portion (the right side in FIG. 7) of the plate spring member 45. As shown in FIG.

The leaf spring member 45 has a bent portion 46 that is bent between the first end portion 45a and the second end portion 45b so as to protrude toward the pin insertion opening 34 . The pin terminal 13 is electrically connected to the quick-connect terminal 40 by being sandwiched between the bent portion 46 of the leaf spring member 45 and the contact portion 42 of the quick-connect terminal 40 .

The first spring holding portion 60 has a first support portion 61 and a first restricting portion 62 . The first support portion 61 supports the surface (lower surface in FIG. 7) of the first end portion 45a of the leaf spring member 45 opposite to the pin insertion opening 34 . The first restricting portion 62 is arranged to face the first supporting portion 61 with the first end portion 45a of the plate spring member 45 interposed therebetween. A gap between the first supporting portion 61 and the first restricting portion 62 is set so as to minimize the clearance according to the plate thickness of the plate spring member 45 . As a result, rattling in the thickness direction of the leaf spring member 45 is suppressed.

The inner end portion (the right end portion in FIG. 7) of the first restricting portion 62 is arranged inside the inner end portion of the first support portion 61 . Further, the outer end portion (the left end portion in FIG. 7) of the first restricting portion 62 is arranged inside the outer end portion of the first support portion 61 .

The second spring holding portion 65 has a second support portion 66 and a second restricting portion 67 . The second support portion 66 supports the surface of the second end portion 45b of the leaf spring member 45 opposite to the pin insertion opening 34 (lower surface in FIG. 7). The second restricting portion 67 is arranged to face the second supporting portion 66 with the second end portion 45b of the plate spring member 45 interposed therebetween. A gap between the second supporting portion 66 and the second restricting portion 67 is set so as to minimize the clearance according to the plate thickness of the plate spring member 45 . As a result, rattling in the thickness direction of the leaf spring member 45 is suppressed.

A second end of the leaf spring member 45 is bent upward in FIG. As a result, it is possible to prevent the plate spring member 45 from falling off in the longitudinal direction.

The inner end portion (the left end portion in FIG. 7) of the second restricting portion 67 is arranged inside the inner end portion of the second support portion 66 . Further, the outer end portion (the right end portion in FIG. 7) of the second restricting portion 67 is arranged inside the outer end portion of the second support portion 66 .

By holding the first end portion 45a and the second end portion 45b of the plate spring member 45 with the first spring holding portion 60 and the second spring holding portion 65 in this manner, the peripheral portion of the bent portion 46 is extended in the thickness direction. The leaf spring member 45 can be smoothly and elastically deformed.

Further, by holding the first end portion 45a and the second end portion 45b of the leaf spring member 45 in the thickness direction and allowing the leaf spring member 45 to expand in the longitudinal direction, the leaf spring member 45 is locally stretched. It is possible to suppress the concentration of stress.

How the leaf spring member 45 is elastically deformed when the pin terminal 13 inserted into the pin insertion opening 34 is moved toward the contact portion 42 of the quick-connect terminal 40 will be described below.

As shown in FIG. 8, when the pin terminal 13 is moved rightward from the position shown in FIG. In this state, when the pin terminal 13 is moved further, the bent portion 46 is elastically deformed and becomes bent downward in FIG.

Here, the inner end portion (the right end portion in FIG. 8 ) of the first restricting portion 62 is arranged inside the inner end portion of the first support portion 61 . Therefore, the first end portion 45a of the plate spring member 45 rotates about the inner end portion of the first support portion 61 and takes an inclined posture.

Further, the outer end portion (the left end portion in FIG. 8) of the first restricting portion 62 is arranged inside the outer end portion of the first support portion 61 . Therefore, when the inner end portion of the first support portion 61 rotates about the fulcrum and assumes an inclined posture, the first end portion 45a is less likely to come into contact with the first restricting portion 62, and the first end portion 45a has an excessive amount of force. It is possible to suppress the action of excessive stress.

On the other hand, the inner end portion (the left end portion in FIG. 8) of the second restricting portion 67 is arranged inside the inner end portion of the second support portion 66 . Therefore, the second end portion 45b of the plate spring member 45 rotates around the inner end portion of the second support portion 66 and assumes an inclined posture.

Further, the outer end portion (the right end portion in FIG. 8) of the second restricting portion 67 is arranged inside the outer end portion of the second support portion 66 . Therefore, when the inner end portion of the second support portion 66 rotates about the fulcrum and assumes an inclined posture, the second end portion 45b is less likely to come into contact with the second restricting portion 67, and the second end portion 45b has excessive force. It is possible to suppress the action of excessive stress.

Then, as shown in FIG. 9, when the pin terminal 13 is moved rightward from the position shown in FIG. At this time, the pin terminal 13 is pressed by the inclined surface on the right side of the bent portion 46 and urged toward the contact portion 42 of the quick-connect terminal 40 . As a result, the pin terminal 13 is sandwiched between the bent portion 46 of the leaf spring member 45 and the contact portion 42 of the quick-connect terminal 40 .

<<Other embodiments>>
The above embodiment may be configured as follows.

In this embodiment, the outer end of the first restricting portion 62 is arranged outside the inner end of the first support portion 61 , and the outer end of the second restricting portion 67 is the inner end of the second support portion 66 . However, it is not limited to this form.

For example, the outer end of the first restricting portion 62 is arranged inside the inner end of the first supporting portion 61, and the outer end of the second restricting portion 67 is inner than the inner end of the second supporting portion 66. It is good also as a structure arranged in.

Further, in this embodiment, the quick-connect terminal 40 and the leaf spring member 45 are formed of separate members. may be integrally formed.

INDUSTRIAL APPLICABILITY As described above, the present invention is extremely useful and has high industrial applicability because it can provide a highly practical effect that the leaf spring member can be easily elastically deformed.

REFERENCE SIGNS LIST 10 lighting fixture 12 light source unit 13 pin terminal 20 socket 30 terminal portion 34 pin insertion port 40 quick connection terminal (conductive member)
45 Plate spring member 45a First end 45b Second end 46 Bending portion 60 First spring holding portion 61 First supporting portion 62 First restricting portion 65 Second spring holding portion 66 Second supporting portion 67 Second restricting portion

Claims (6)

A socket for detachably attaching a light source unit,
a terminal portion having an elongated pin insertion opening into which the pin terminal of the light source unit is inserted;
a conductive member that is housed in the terminal portion and has a contact portion that is electrically connected to the pin terminal;
a leaf spring member extending along the longitudinal direction of the pin insertion opening;
a first spring holding portion that holds a first end portion on one end side of the leaf spring member;
a second spring holding portion that holds a second end portion on the other end side of the leaf spring member;
The leaf spring member is bent between the first end and the second end so as to protrude toward the pin insertion opening, and connects the pin terminal with the contact portion of the conductive member. having a bent portion for sandwiching,
The first spring holding portion includes a first support portion that supports a surface of the first end portion opposite to the pin insertion opening, and a first support portion that faces the first support portion across the first end portion. 1 restriction part. In claim 1,
In the first spring holding portion, an end portion of the first restricting portion on the second spring holding portion side is closer to the second spring holding portion than an end portion of the first support portion on the second spring holding portion side. Sockets that are placed in In claim 2,
In the first spring holding portion, an end portion of the first restricting portion opposite to the second spring holding portion side is arranged to extend from an end portion of the first support portion opposite to the second spring holding portion side. are arranged on the side of the second spring holding portion. In any one of claims 1 to 3,
In the first spring holding portion, an end portion of the first restricting portion opposite to the second spring holding portion side is positioned closer to the second spring holding portion than an end portion of the first support portion on the second spring holding portion side. A socket located on the side of the spring holding part. In any one of claims 1 to 4,
A socket in which the conductive member and the leaf spring member are integrally formed. a socket according to any one of claims 1 to 5;
and a light source unit detachably attached to the socket.

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