JP5945772B2 - Plug, lighting apparatus using the plug, and lighting system using the lighting apparatus - Google Patents

Description

The present invention, plug, an illumination fixture using the plug relates to an illumination system using the lighting fixture.

  Conventionally, a plug connected to a wiring duct has been provided (see, for example, Patent Document 1).

  The wiring duct is also called a lighting duct, a duct rail, or the like, and has a so-called lip groove-shaped connection recess in which the width of the end on the opening side is narrower than the width on the back side. In the wiring duct, power supply terminals made of a conductive material are held on the inner surfaces of the connection recesses facing each other in the width direction. Each power supply terminal is electrically connected to a power source and used as a power supply path.

  Further, the plug is inserted and connected to the connection recess, and has a pair of power receiving contacts that are in contact with the power supply terminal in a one-to-one relationship.

  The plug is provided in, for example, a lighting fixture, and a load such as a light source is supplied with power through a power supply terminal and a power receiving contact. According to the wiring system using the wiring duct and the plug as described above, since the plug can be connected to an arbitrary position of the connection recess, the connection position of the plug as compared with a wiring system using a general outlet. High degree of freedom.

Japanese Utility Model Publication No.59-76091

  In the above wiring system, when the plug is connected to the wiring duct while power is being supplied from the power supply to the power supply terminal, arc discharge occurs between the power supply terminal and the power receiving contact during the connection process. there's a possibility that.

The present invention has been made in view of the above-mentioned reasons, and an object of the present invention is to provide a plug capable of suppressing the occurrence of arc discharge in the process of connection to a wiring duct, a lighting fixture using the plug, and the lighting fixture. It is to provide a lighting system using.

The plug of the present invention is a plug connected to a wiring duct, and the wiring duct is held on each of a duct main body having a groove-shaped connection concave portion and an inner surface facing the width direction of the connection concave portion. Two power receiving terminals, each including two power receiving contacts made of a conductive material and in contact with the power feeding terminals one by one, and the power receiving contacts in the process of connection to the wiring duct. The wiring duct is elastically deformed so as to increase the distance between the power feeding terminals by pressing the wiring duct before being brought into contact with the power feeding terminal, and the wiring duct is not elastically deformed when the connection is completed. possess a pressing portion, the wiring duct is projected inwardly of the respective width direction at a position closer to the opening of the connection recess than said feed terminal to a inner surface facing the width direction of the connection recess A lip portion is provided, and in the pressing portion, an insertion depth into the connection recess is reduced on the surface directed toward the inner bottom surface of the connection recess toward the outside in the direction directed in the width direction of the connection recess. An inclined portion that is inclined in a direction to be provided is provided, and the pressing portion elastically deforms the wiring duct by pressing the lip portion .

Luminaire of the present invention is characterized by comprising a light source to be turned and the plug top reporting, by electric power supplied via the power receiving contact with said feeding terminal.

  The lighting system of the present invention includes the above-described lighting fixture and the wiring duct.

According to the present invention, the pressing portion of the plug has a cable duct so as to increase the distance between the feed terminal that is elastically deformed, between the feeding terminal and the power receiving contact in the process of connecting the plug to the cable duct The occurrence of arc discharge is suppressed.

It is a perspective view which shows the state in which the reference example 1 of this invention was connected to the wiring duct. It is a front view which shows the wiring duct to which the same is connected. (A) and (b) show the same as above, (a) is a front view, and (b) is a plan view. It is the partially broken top view which shows a semi-connection state same as the above. It is a partially broken top view which shows the process in which a same as the above transfers to a connection state from a semi-connection state. It is a front view showing a preferred form status of the present invention. It is a front view which shows the wiring duct to which the same is connected. It is a perspective view which shows the state connected to the wiring duct same as the above. It is explanatory drawing which shows the process of connecting the same to a wiring duct. It is explanatory drawing which shows another process of connecting the same to a wiring duct. It is a perspective view which shows an example of the lighting fixture and illumination system using the same as the above. It is a perspective view which shows the reference example 2 of this invention. It is a perspective view which shows the state attached to the wiring duct same as the above. It is sectional drawing which shows the process in which the same as the above is attached to a wiring duct. It is explanatory drawing which shows the method of attaching the same to a wiring duct.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

( Reference Example 1)
As shown in FIG. 1, the plug 1 of this reference example is used by being connected to a wiring duct 2. Hereinafter, the upper, lower, left, and right are based on FIG.

  As shown in FIG. 2, the wiring duct 2 includes a duct body 21 having a groove-shaped connection recess 210 that extends linearly. In the duct main body 21, lip portions 211 project from the inner surface of the connection recess 210 on the inner surface of the connection recess 210 facing the width direction (left-right direction in FIG. 2), and the connection recess 210 is a so-called lip groove. It has become. More specifically, the wiring duct 2 protrudes downward from the upper wall 212 constituting the upper wall of the connection recess 210 with the thickness direction directed in the vertical direction, and the left and right ends of the upper wall 212 respectively. And two side walls 213 with the thickness direction directed in the left-right direction. Each lip portion 211 protrudes from the lower end of the side wall 213 in the left-right direction, and the thickness direction is directed in the up-down direction. The duct body 21 is formed by covering the surface of a metal member 217 having a C-shaped cross section straddling the upper wall 212, the side wall 213, and the lip portion 211 with a synthetic resin 218.

  The connection recess 210 is open to the lower side and both front and rear sides of the duct body 21, and the depth direction of the connection recess 210 when viewed as a groove is the vertical direction, and the back side in the depth direction is the upper side. The lip portion 211 protrudes inward in the left-right direction from the lower end portion of the inner surface facing the left and right of the connection recess 210.

  Further, on the inner surface of the connection recess 210 facing the left and right above the lip portion 211 (that is, the back side in the depth direction of the connection recess 210), there are terminal holding projections 214 that are protrusions extending in the front-rear direction. Projected. Each terminal holding projection 214 is provided with a groove-like recess 215 extending in the front-rear direction on the inward surface in the left-right direction, and the feeding terminal 22 made of a conductive material is stored and held in each recess 215. Has been.

  As shown in FIG. 3, the plug 1 has a contact holder 11 made of a synthetic resin and two power receiving contacts 12 each made of a conductive material and held by the contact holder 11. Hereinafter, in the description of the structure of the plug 1, the top, bottom, left, and right are based on FIG. 3A, and the direction perpendicular to the paper surface of FIG. That is, the description will be made with reference to a direction in a state where the connection to the wiring duct 2 is completed (hereinafter referred to as “connection state”).

  Each of the power receiving contacts 12 protrudes from the contact holder 11 in one of the left and right directions, and can be elastically deformed so as to reduce the protruding dimension in the left and right direction from the contact holder 11. The power receiving contact 12 as described above can be configured using, for example, a metal plate. In addition, the distance between the tips of the power receiving contact 12 in the state of elastic return is larger than the distance between the power supply terminals 22 in a state where the wiring duct 2 is not elastically deformed. Each power receiving contact 12 contacts the power supply terminal 22 from the inside in the left-right direction (that is, the width direction of the connection recess 210), and the contact pressure of the power receiving contact 12 with respect to the power supply terminal 22 in the connected state is the power receiving contact. Secured by the elastic force of the child 12.

  The plug 1 has a flange 13 that is connected to the lower end of the contact holder 11 and protrudes in the left-right direction and the front-rear direction from the power receiving contact 12. The collar portion 13 has a parallelogram shape that is long to the left and right as a whole as viewed from above, and is sandwiched between the lip portion 211 and the terminal holding convex portion 214 in the vertical direction in the connected state. Further, the plug 1 includes a connecting portion 14 connected to the lower side of the flange portion 13 and a main body portion 15 connected to the lower side of the connecting portion 14. The dimension of the connecting portion 14 in the left-right direction is smaller than the distance between the lip portions 211, and the connecting portion 14 is sandwiched between the lip portions 211 in the connected state. Further, the main body 15 has a cylindrical shape having an outer diameter comparable to the left and right dimensions of the wiring duct 2, and the main body 15 is positioned below the wiring duct 2 in the connected state. The contact holder 11, the flange 13, the connecting portion 14, and the main body 15 are integrally formed of, for example, synthetic resin.

Here, the power transmitted to the power supply terminal 22 is a direct current, and the power supply terminal 22 has a polarity. Therefore, the wiring duct 2 and the plug 1 are asymmetric left and right so that they are not reversely connected (that is, reversely connected). Specifically, a reverse connection preventing convex portion 216 is projected downward from the lower right end portion of the wiring duct 2. Further, the main body portion 15 of the plug 1 is shaped so as to be in close contact with the lower surface of the wiring duct 2 at portions other than the reverse connection prevention convex portion 216, and the reverse connection prevention convex portion 216 is avoided when the connection direction is correct. A connection preventing recess 151 is provided at the upper right end. That is, in the case of reverse connection, the reverse connection prevention convex portion 216 interferes with the main body portion 15, thereby preventing introduction of the flange portion 13 and the like into the connection concave portion 210.

  Further, the reverse connection prevention concave portion 151 is provided with the reverse connection prevention convex portion 216 even when the plug 1 is rotated 90 ° clockwise as viewed from above with respect to the connection state (hereinafter referred to as “half-connection state”). It is made into the circular arc shape which can engage.

  Further, the plug 1 includes a rotation stopper 16 that can be displaced vertically with respect to the main body 15 on the front side of the main body 15. The rotation stopper 16 protrudes upward from the upper surface of the main body 15 at the upper end of the movable range (hereinafter referred to as “lock position”). Further, the rotation stopper 16 does not protrude from the upper surface of the main body 15 at the lower end of the movable range (hereinafter referred to as “unlock position”). Further, a return spring (not shown) for returning the rotation stopper 16 to the lock position is interposed between the main body portion 15 and the rotation stopper 16.

  When the plug 1 is connected to the wiring duct 2, the rotation stopper 16 is maintained at the unlocked position against the spring force of the return spring, and the orientation in the connected state as shown in FIG. In a state where the plug 1 is rotated 90 ° clockwise as viewed from above, a portion of the plug 1 above the upper surface of the main body 15 is inserted into the connection recess 210 to be in a semi-connected state. That is, in the half-connected state, the protruding direction of the power receiving contact 12 from the contact holder 11 and the longitudinal direction of the flange 13 are the front-rear direction (vertical direction in FIG. 4). In order to enable the insertion as described above, the dimension W1 in the short side direction (left-right direction in FIG. 4) of the flange portion 13 is the distance (that is, the connection) between the lip portions 211 of the wiring duct 2 that is not elastically deformed. The width of the opening of the recess 210 is smaller than W2.

  After the plug 1 is in the semi-connected state as described above, the plug 1 is shifted to the connected state by rotating the plug 1 counterclockwise as shown by the arrow A1 with respect to the wiring duct 2 as viewed from above. Can do. When the plug 1 shifts to the connected state, the rotation stopper 16 returns to the locked position by the spring force of the return spring and is sandwiched between the lip portions 211, thereby rotating the plug 1 relative to the wiring duct 2 in the vertical direction. Rotation around an axis parallel to is prohibited.

  Here, as for the collar part 13, the circumscribed circle seen from the top has a right rear end part (upper right end part in FIG. 3B) and a left front end part (left lower end part in FIG. 3B). It has a parallelogram shape as a whole. Further, the diameter of the circumscribed circle of the flange 13 viewed from above (W3 in FIG. 4) is made larger than the distance between the side walls 213 of the wiring duct 2 that is not elastically deformed (W4 in FIG. 4). Therefore, in the process of the plug 1 shifting from the semi-connected state to the connected state, each side wall 213 of the wiring duct 2 is pressed against the flange 13 as indicated by an arrow A2 in FIG. Elastic deformation is performed so as to increase the distance between the terminals 22. That is, the collar part 13 is a pressing part. Moreover, the surface which presses the wiring duct 2 in the collar part 13 is made into the convex curved surface shape so that the catch and abrasion at the time of the plug 1 rotating between a semi-connection state and a connection state may be suppressed. When the plug 1 exceeds the position where the elastic deformation of the wiring duct 2 is maximized (hereinafter referred to as “maximum deformation position”) in the process of transition from the semi-connected state to the connected state, the elasticity of the wiring duct 2 is reached. Due to the force, the plug 1 shifts to the connected state at once. As described above, the position of the power receiving contact 12 in the vertical direction (that is, the depth direction of the connection recess 210) in the entire process from the half-connected state to the connected state (including the above-described maximum deformation position) is as follows. This coincides with the position of the power supply terminal 22 in the vertical direction. Further, in the connected state, the flange 13 does not press the wiring duct 2, and the wiring duct 2 returns completely elastically.

  The central axis of the main body portion 15 of the plug 1 coincides with the rotation axis of rotation between the semi-connected state and the connected state. Further, a portion of plug 1 housed in connection recess 210 (that is, a portion above the upper surface of main body portion 15, specifically, connecting portion 14, flange 13, power receiving contact 12, and contact holding portion. 11) has a two-fold rotational symmetry with respect to the rotation axis as a whole.

  The dimension and shape of the collar portion 13 may be such a dimension that ensures a distance that does not cause arc discharge between the power receiving contact 12 and the power supply terminal 22 from the half-connected state to the maximum deformation position. desirable.

  According to the above configuration, when the plug 1 is connected to the wiring duct 2, the power supply terminal 22 is pulled away from the power receiving contact 12 due to elastic deformation of the wiring duct 2 until the plug 1 reaches a connected state. Further, after exceeding the maximum deformation position, the plug 1 is rapidly displaced to the connection position by the elastic force of the wiring duct 2. Thus, the occurrence of arc discharge can be suppressed.

(Working-shaped state)
Since the basic configuration of this embodiment is the same as that of Reference Example 1, the description of the common parts is omitted.

  In the present embodiment, the plug 1 is not connected to the wiring duct 2 by being rotated as in the first embodiment, but is connected by being pushed into the connection recess 210 from below.

  Specifically, as shown in FIGS. 6 to 8, the upper surface of the left and right end portions of the collar portion 13 and the lower surface of the tip portion of each lip portion 211 are inclined downward toward the outer side in the left-right direction. Inclined portions 131 and 231 are provided. That is, in the flange portion 13 as the pressing portion, the connection recess 210 is formed on the upper surface, which is a surface directed toward the inner bottom surface of the connection recess 210, toward the outer side in the left-right direction that is the direction directed in the width direction of the connection recess 210. An inclined portion 131 is provided which is inclined downward, which is a direction to reduce the insertion depth. In addition, inclined portions 132 and 232 that are inclined upward toward the outer side in the left-right direction are provided on the lower surfaces of the left and right end portions of the flange portion 13 and the upper surface of the tip portion of each lip portion 211, respectively.

  When connecting the plug 1 to the wiring duct 2, the plug 1 is pushed into the connection recess 210 from below as indicated by an arrow A3 in FIG. Then, each inclined portion 131 on the upper surface of the flange portion 13 is in sliding contact with the inclined portion 231 on the lower surface of the lip portion 211, so that the wiring duct 2 increases the distance between the power supply terminals 22 as indicated by an arrow A4. Elastically deforms. Eventually, when the collar portion 13 reaches the upper side of the lip portion 211, the wiring duct 2 is elastically restored as indicated by an arrow A5 in FIG. At this time, each inclined portion 132 on the lower surface of the collar portion 13 is pushed by the inclined portion 232 on the upper surface of the lip portion 211, whereby the plug 1 receives an upward force as indicated by an arrow A6, and each power receiving contact 12 Are all displaced at once to the position where they are brought into contact with the power supply terminal 22.

  Also in this embodiment, when the plug 1 is connected to the wiring duct 2, the power supply terminal 22 is separated from the power receiving contact 12 due to elastic deformation of the wiring duct 2 until the connection is completed. Further, after exceeding the position where the deformation amount of the wiring duct 2 is maximized, the plug 1 is rapidly displaced to a position where the power receiving contact 12 is brought into contact with the power supply terminal 22 by the elastic force of the wiring duct 2. Thus, the occurrence of arc discharge can be suppressed.

In the present embodiment, unlike the reference example 1, it is not necessary to rotate the plug 1 with respect to the wiring duct 2, and therefore it is not necessary to displace the rotation stopper 16 to the unlock position. Further, if the dimensional shape of the connecting portion 14 is such that the rotation is prohibited by being sandwiched between the lip portions 211, the rotation stopper 16 need not be provided.

  The various plugs 1 are provided in a lighting fixture 3 as shown in FIG. 11, for example. 11 includes a lamp body 31 that holds an electrical light source (not shown) in addition to the plug 1 and an arm 32 that is connected to the plug 1 and supports the lamp body 31. As said light source, well-known light sources, such as a light emitting diode, can be used, for example. The light source may be one that is directly supplied with the power supplied via the power receiving contact 12 and lights up, or a lighting circuit that appropriately converts the power supplied via the power receiving contact 12. It may be lit by an output (not shown). The above lighting circuit is housed and held in the lamp body 31, for example. The electrical connection between the light source and the lighting circuit and the power receiving contact 12 of the plug 1 is achieved by, for example, the power cable 33.

  In FIG. 11, three lighting fixtures 3 constitute an illumination system together with the wiring duct 2. Each power supply terminal 22 of the wiring duct 2 is electrically connected to the DC power source 4 via a fader 42 and a power cable 41. Further, one end in the length direction of the connection recess 210 is closed by the fader 42, and the other end is closed by the end cap 20 that is detachably coupled to the wiring duct 2. The end cap 20 is made of an insulating material such as synthetic resin and is coupled to the wiring duct 2 by an appropriate means such as fitting. In addition, the number of the lighting fixtures 3 can be changed suitably.

( Reference Example 2 )
The jig 5 of this reference example shown in FIGS. 12 to 15 is attached to the wiring duct 2 in advance before the plug 1 is connected to the wiring duct 2, so that the distance between the power supply terminals 22 is increased. Is elastically deformed.

Since the basic configuration of the plug 1 and the wiring duct 2 used together with the jig 5 of this reference example is the same as that of the reference example 1, the description of the common parts is omitted.

  The vertical direction will be described in detail with reference to FIG. 13. The jig 5 protrudes upward from the disc-shaped main body 51 with the thickness direction directed in the vertical direction and the center of the upper surface of the main body 51. And a flange portion 53 that is a long and narrow plate shape whose thickness direction is directed in the vertical direction, and whose lower surface of the central portion in the longitudinal direction is connected to the connection portion 52. As a material of the jig 5 as described above, for example, a synthetic resin can be used. The diameter of the main body 51 is small enough not to cause interference with the reverse connection preventing convex 216 and large enough not to drop into the connecting concave 210.

  Here, the cross-sectional shape of the connecting portion 52 in the cross section perpendicular to the vertical direction is a shape that is long in the same direction as the longitudinal direction of the flange portion 53. Further, as shown in FIG. 14, the dimension W5 in the short direction of the connecting portion 52 is the same as the dimension in the short direction of the flange portion 53 and is between the lip portions 211 of the wiring duct 2 that is not elastically deformed. It is smaller than the distance W2. Furthermore, each end surface of the flange portion 53 in the short direction is flush with one end surface of the connecting portion 52 in the short direction. That is, the dimension in the short direction of the flange portion 53 is also smaller than the distance W2 between the lip portions 211 of the wiring duct 2 that is not elastically deformed.

  When the jig 5 is attached to the wiring duct 2, as shown in FIG. 14, the short direction of the connecting portion 52 and the flange portion 53 is directed to the width direction of the connection recess 210 (left and right direction in FIG. 14). Thus, the connecting portion 52 and the flange portion 53 are introduced into the connection recess 210. Next, the jig 5 is rotated 90 ° counterclockwise with respect to the wiring duct 2 as viewed from above as indicated by an arrow A7 in FIG. Then, as shown in FIG. 13, the longitudinal ends of the flange portion 53 are positioned above the lip portion 211 to prevent the jig 5 from falling off. Here, the jig 5 is attached to the wiring duct 2. Complete.

  Here, the longitudinal dimension W6 of the connecting portion 52 is larger than the distance W2 between the lip portions 211 of the wiring duct 2 in a state where the connecting portion 52 is not elastically deformed. Thereby, in the process of the rotation described above, the wiring duct 2 presses the lip portion 211 against the connecting portion 52 so as to widen the opening of the connection recess 210 as shown by an arrow A8 in FIG. It is elastically deformed (to increase the distance between the power supply terminals 22).

  In the jig 5, a T-shaped operation part 54 projects downward from the lower surface of the main body 51, and the operation part 54 can be held when the jig 5 is rotated as described above. Further, the portion of the connecting portion 52 of the jig 5 that presses the wiring duct 2 in the above-described rotation process smoothly continues to the end face in the longitudinal direction of the connecting portion 52 so that the hook 5 does not get caught in the above-described rotation process. It is a convex curved surface shape.

  In the state where the jig 5 is attached as described above, the wiring duct 2 is configured such that each lip portion 211 is pressed by the connecting portion 52 as the pressing portion of the jig 5, thereby reducing the distance between the power feeding terminals 22. Elastically deforms to increase. Therefore, compared with the state where the jig 5 is not attached, the occurrence of arc discharge when the plug 1 is connected to the wiring duct 2 can be suppressed.

Also, the jig 5 in advance the reference example before connecting the plug 1 to the wiring duct 2 Oke attached to cable duct 2, wiring dimensions of the collar portion 13 as in Reference Example 1 and implementation type status duct It is not necessary to have a dimension and shape that elastically deforms 2. Therefore, a conventional plug as described in Patent Document 1 can be used. Further, by pressing the cable duct 2 by plug 1 as in Reference Example 1 and carried shape condition than in the case of elastic deformation, wear of the plug 1 can be suppressed.

  In addition, it is good also as a structure where the wiring duct 2 is pressed by the collar part 53 instead of setting it as the structure where the wiring duct 2 is pressed by the connection part 52 as mentioned above. In this case, the longitudinal dimension of the flange portion 53 is made larger than the distance between the side walls 213 of the wiring duct 2 that has been elastically restored, and both end portions in the longitudinal direction of the flange portion 53 as the pressing portion respectively extend the sidewall 213 in the left-right direction. The elastic deformation of the wiring duct 2 is achieved by pressing outward.

  As mentioned above, although the structure of this invention was demonstrated based on the said embodiment, this invention is not restricted to the said embodiment example. For example, the structure which combined the partial structure of the said embodiment suitably may be sufficient. In addition, the materials, numerical values, and the like described in the above embodiments are merely preferable examples, and are not limited thereto. Furthermore, it is possible to appropriately change the configuration without departing from the scope of the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 Plug 2 Wiring duct 3 Lighting fixture 5 Jig 12 Power receiving contact 13 A collar part (pressing part)
21 Duct body 22 Power supply terminal 52 Connecting part (pressing part)
131 Inclined part 210 Connection concave part 211 Lip part

Claims (3)

A plug connected to a wiring duct,
The wiring duct includes a duct main body having a groove-shaped connection recess, and two power supply terminals held on one of the inner surfaces facing the width direction of the connection recess,
Two power receiving contacts made of a conductive material and in contact with the power feeding terminals one by one;
Elastically deforming the wiring duct so as to increase the distance between the power feeding terminals by pressing the wiring duct before the power receiving contact contacts the conductive terminal in the process of connection to the wiring duct; and A pressing portion that does not elastically deform the wiring duct in a state where the connection is completed,
The wiring duct has a lip portion projecting inward in the width direction at an inner surface facing the width direction of the connection recess and closer to the opening of the connection recess than the power supply terminal,
In the pressing portion, the surface directed toward the inner bottom surface of the connection recess is inclined toward the outside in the direction directed in the width direction of the connection recess toward the direction in which the insertion depth into the connection recess is reduced. Part is provided,
The plug, wherein the pressing portion elastically deforms the wiring duct by pressing the lip portion.   A lighting apparatus comprising: the plug according to claim 1; and a light source that is turned on by electric power supplied via the power feeding terminal and the power receiving contact.   A lighting system comprising the lighting fixture according to claim 2 and the wiring duct.

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