CN111373643A

CN111373643A - Power supply unit for pipeline guide rail

Info

Publication number: CN111373643A
Application number: CN201780097186.9A
Authority: CN
Inventors: 仁义修
Original assignee: DAIKAN CO LTD
Current assignee: DAIKAN CO LTD
Priority date: 2017-11-27
Filing date: 2017-12-28
Publication date: 2020-07-03
Also published as: WO2019102627A1; JP2019096557A; JP6370463B1

Abstract

The purpose of the present invention is to provide a power supply unit (1) for a duct rail, which does not use the turning operation of an operating lever when being attached to and detached from the duct rail (100). A power supply unit (1) for a duct guide comprises a first member (3), a second member (4), and an AC/DC conversion unit (5) provided on an exposed portion (32) of the first member (3), wherein the first member (3) has one retaining projection (31b) and a contact (35) at an insertion portion (31) inserted into the duct guide (100), the width of the insertion portion (31) is set to be equal to or less than the width of an opening (104) of the duct guide (100), the second member (4) has the other retaining projection (41b) and a contact (45), and the width of the insertion portion (41) is set to be equal to or less than the width of the opening (104).

Description

Power supply unit for pipeline guide rail

Technical Field

The present invention relates to a power supply unit for a duct rail, which is mechanically supported by a duct rail laid on a ceiling surface or the like and is electrically connected to the duct rail.

Background

The duct rail (wiring duct) is elongated and has a substantially コ -shaped cross section and is open downward, and guides slightly protruding toward the other open end and extending in the longitudinal direction are provided to extend from the open ends of the two opposite side walls of the portion having a substantially コ -shaped cross section, respectively, and a hollow rail having an opening is provided between the guides. The conductor lines are laid continuously in the longitudinal direction at positions opposed to the respective inner side surfaces of the two side walls of the pipe guide rail. Each conductor line is connected to an indoor wiring. Thus, the lighting fixture and the like can be installed at a desired place on the duct rail using the duct rail plug which is mechanically supported by the guide of the duct rail and can be electrically connected to the conductor wire.

Various types of plugs have been proposed as the plug for a piping guide. For example, patent document 1 discloses a plug in which a plug and a fixing blade are rotatably provided, and the plug and an operation lever that rotates the fixing blade are extended to a side of the plug.

However, with this plug, if the operating lever is turned by mistake as a switch, the plug may be dropped.

Therefore, it is considered that the same possibility is also given to a case where a power supply unit such as an AC/DC converter is provided to the duct rail via such a plug.

Documents of the prior art

Patent document

Patent document 1: japanese Kokai publication Sho-49-54796

Disclosure of Invention

Problems to be solved by the invention

In view of the above problems, an object of the present invention is to provide a power supply unit for a duct rail that does not use a turning operation of an operation lever when attaching and detaching the power supply unit to and from the duct rail.

Means for solving the problems

The present invention is a power supply unit for a duct rail, which is used by being attached to a hollow duct rail formed in a long shape having a substantially コ -shaped cross section and opening downward, in which conductor lines extending in a longitudinal direction are provided on inner sides of two opposing side walls, respectively, and in which two guides extending inward from opening edges of the two side walls and extending in the longitudinal direction and an opening between the two guides are provided, the power supply unit for a duct rail, including: a first member having an insertion portion at least a portion of which is inserted into the hollow from the opening; a second member that abuts against the first member and has an insertion portion at least a part of which is inserted into the hollow portion from the opening; and an AC/DC converter connected to the first member, the first member having, in the insertion portion, one retaining projection that is retained by abutting against an inner surface of one of the guides, and one contact that is energized by coming into contact with one of the conductor lines, and the width of the insertion portion is formed to be equal to or less than the width of the opening, the second member has another retaining projection which is brought into contact with an inner surface of the other guide to retain the guide, and another contact which is brought into contact with the other conductor line to be energized, and the width of the insertion portion having the other anti-slip projection and the other contact is formed to be equal to or less than the width of the opening, the state in which the insertion portion of the first member and the insertion portion of the second member are inserted into the hollow portion and positioned on one side and the other side in the width direction so as to abut against each other is a state in which they are attached to the duct guide.

Effects of the invention

According to the present invention, it is possible to provide a power supply unit for a duct rail that does not use a turning operation of an operation lever when attaching and detaching the power supply unit to and from the duct rail.

Drawings

Fig. 1 is a perspective view of a power supply unit for a duct rail attached to the duct rail.

Fig. 2 is an explanatory diagram showing an internal configuration of the power supply unit for a piping rail.

Fig. 3 is an explanatory diagram of each component of the power supply unit for a piping rail.

Fig. 4 is an explanatory view of a longitudinal section of the first member and the second member.

Fig. 5 is an explanatory diagram of the plug in a state in which the first member and the second member are combined.

Fig. 6 is an explanatory view showing a state where the first member and the second member are attached to the duct rail.

Detailed Description

Hereinafter, one embodiment of the invention of the present application will be described.

[ example 1 ]

< appearance of duct guide and power supply unit for duct guide >

Fig. 1 is a perspective view showing a state in which a power supply unit 1 for a duct rail is attached to a duct rail 100 that can be energized, and the duct rail 100 is laid on a ceiling surface or suspended from the ceiling surface. In the following description, in a state where power supply unit for a duct rail 1 is attached to duct rail 100, the side (top surface side) of duct rail 100 is defined as the upper side of power supply unit for a duct rail 1, and the opposite side (ground surface side) of duct rail 100 is defined as the lower side of power supply unit for a duct rail 1.

Duct guide 100 includes: a duct guide main body 101 having a cross section formed by rotating a substantially コ -shaped body 90 degrees to the left; two

guides

102, 102 protruding inward from the lower ends of both side walls of the duct rail main body 101; and two

conductor lines

103, 103 provided in a straight line along the longitudinal direction on both right and left sides of the inner side of the pipe guide main body 101. The duct guide main body 101 is formed integrally with the two

guides

102 and 102, and has a shape in which the center of the lower surface of a substantially rectangular cross section is opened in a straight line in the longitudinal direction.

The duct rail main body 101 has two

side walls

101a and 101b provided vertically downward from both ends of a substantially horizontal ceiling surface mounting wall 101 c. Two

guides

102 and 102 horizontally disposed at the same height inward are provided at both lower ends of the

side walls

101a and 101b, and an opening 104 is provided between the two

guides

102 and 102. The tube rail body 101, the two guides 102, and the two

conductor lines

103, 103 are formed in an elongated shape and are all formed in the same length.

The two guides 102 are formed in a long plate shape extending horizontally inward from lower open ends of the two

side walls

101a and 101b of the pipe guide main body 101 toward open ends on the opposite sides, and are provided along the longitudinal direction of the pipe guide main body 101. The two guides 102 are arranged in an opposed manner.

A slit-shaped opening 104 is provided between the two opposing guides 102. The two

guides

102, 102 and the opening 104 are formed with substantially the same width. The hollow interior 105 surrounded by the duct guide main body 101 and the two guides 102 becomes hollow.

The two conductor wires 103 are provided inside the

opposite side walls

101a, 101b of the pipe guide body 101 in the longitudinal direction of the pipe guide body 101. The two conductor lines 103 are disposed so as to face each other. AC power is supplied to the conductor line 103 from an external power supply via the indoor wiring.

The outer surface of the power supply unit 1 for piping guide rails is covered with a unit case 2. The unit case 2 is a substantially rectangular parallelepiped shape that is horizontally long in the longitudinal direction of the duct rail main body 101 and has an open upper surface and a hollow interior. The power supply unit 1 for a duct rail attached to the duct rail 100 is arranged such that the lateral width W2 in the short side direction of the unit case 2 is substantially the same as the lateral width W101 of the duct rail main body 101, and the two

side walls

2a and 2b of the unit case 2 are flush with the two

side walls

101a and 101b of the duct rail main body 101.

Therefore, the power supply unit 1 for a duct rail has a uniform appearance with the duct rail 100, and has a sense of unity, thereby being beautiful.

The power supply unit 1 for a duct guide is attached to the inside of the duct guide 100 on the surface of the duct guide 100, and two DC lines La and Lb extending from the upper surface of the power supply unit 1 for a duct guide are housed inside the duct guide 100. One end of the two DC lines La and Lb is connected to the upper surface side of the power supply unit 1 for the pipe guide, and the other end is formed to be longer than the power supply unit 1 for the pipe guide, and one is a positive electrode and the other is a negative electrode. The power supply unit for a piping rail 1 converts AC power flowing through the conductor line 103 of the piping rail 100 into DC power, and supplies the converted DC power to the two DC lines La, Lb. The two DC lines La and Lb are electrically connected to an LED lighting device such as an LED signboard, and thereby DC power can be supplied to the LED lighting device.

< integral Structure of Power supply Unit for piping guide Rail >

Fig. 2 (a) is a perspective view showing an internal structure of the power supply unit 1 for a raceway rail, and fig. 2 (B) is a vertical cross-sectional view showing the internal structure of the power supply unit 1 for a raceway rail.

The power supply unit 1 for a duct rail has an outer surface covered with a unit case 2, and includes an AC/DC converter 5 and a plug unit 10 inside.

< AC/DC converting part >

The AC/DC converter 5 is a substantially rectangular parallelepiped having a horizontally long outer shape, and converts AC power into DC power. The AC/DC converter 5 is mounted on a base 51 provided on one side surface 5c extending in the longitudinal direction. The AC/DC converter 5 has AC input portions TI1 and TI2 and DC output portions TO1 and TO2 on one end surface 5 a. The AC input portions TI1 and TI2 and the DC output portions TO1 and TO2 are not limited TO these positions, and may be provided at appropriate inconspicuous positions such as the side of the duct rail 100 of the AC/DC converter 5 connected thereto. One ends of DC lines La and Lb (see fig. 1) are electrically connected TO the DC output units TO1 and TO2, respectively.

Fig. 3 (a) is an explanatory view showing the power supply unit 1 for a duct rail before being attached to the duct rail 100, and shows a state where the unit case 2 is detached.

< plug part >

The plug portion 10 is formed by joining the first member 3 and the second member 4, which are two members that can be easily separated.

First member 3 and second member 4 have

insertion portions

31 and 41 inserted into hollow interior 105 through opening 104 of duct rail 100, and

exposure portions

32 and 42 exposed through opening 104, respectively (see fig. 2B). The insertion portion 31 of the first member 3 is positioned in one of the width directions (the left and right short directions in the top-mounted state) of the duct rail 100, and the insertion portion 41 of the second member 4 is positioned in the other of the width directions, and the plug portion 10 is fixed to the duct rail 100 in a state where both the

insertion portions

31, 41 are in contact with each other. The first member 3 and the second member 4 are each formed of a nonconductive insulating material, for example, an acrylic material or a resin material, and each has a strength such that they are not broken or deformed even when a load is applied to a connection object such as the power supply unit 1 for a piping rail.

Section for exposing

Exposed portion 32 of first member 3 is a horizontally long substantially rectangular plate-like body parallel to guide 102 (see fig. 1) of duct rail 100, and has AC terminal block portion 34 provided at a part of one end side in the longitudinal direction and AC/DC converter portion 33 provided at most of the other end side (see fig. 3 a).

The AC/DC converter setting unit 33 is provided with a horizontally long (long in the same direction as the longitudinal direction of the duct guide 100) AC/DC converter 5 mounted on the base 51. The AC/DC converter 5 is provided (fixed) so as to cover the AC/DC converter setting unit 33 with the base 51 interposed therebetween. The AC/DC conversion section 5 is provided in such a manner that one end face 5a provided with the AC input sections TI1, TI2 faces the AC terminal block section 34 side.

The contact 35 (one contact) is fixed to the AC terminal block portion 34 of the first member 3 by screwing the base portion 35a with a screw 36. Further, the base portion 35a of the contact 35 is electrically connected to one of the AC input portions TI1, TI2 of the AC/DC conversion portion 5 by a cable.

The exposed portion 42 of the second member 4 is provided with an AC terminal block portion 44.

The contact 45 (the other contact) is fixed to the AC terminal block portion 44 of the second member 4 by screwing the base portion 45a with a screw 46. The base portion 45a of the contact 45 is connected to a cable provided with a female-side wiring connector Cf at the other end. On the other hand, the other of the AC input sections TI1, TI2 of the AC/DC converter 5 is connected to a cable provided with a wiring connector Cm on the male side at the other end.

Therefore, by coupling or decoupling the female-side wiring connector Cf and the male-side wiring connector Cm, the electrical connection between the base portion 45a of the contact 45 and the other of the AC input portions TI1, TI2 of the AC/DC converter 5 and the decoupling of the electrical connection can be easily performed. In this example, the connection is made by a cable, but instead of the wiring connector Cm of the AC input portion TI1, a conductive metal plate protruding into the inner space of the duct guide 100 may be provided, and instead of the wiring connector Cf provided at the base portion 45a of the contact 45, a conductive metal plate that is in contact with the metal plate and is energized may be provided. In this case, when the first member 3 and the second member 4 are attached to the duct rail 100, the metal plates can be automatically brought into contact with each other to perform energization.

When the first member 3 and the second member 4 are combined, the exposed portion 32 of the first member 3 and the exposed portion 42 of the second member 4 are disposed so that the AC terminal block portion 34 of the first member 3 and the AC terminal block portion 44 of the second member 4 are adjacent to each other (see fig. 2 a).

< Structure of plug part >

Fig. 3 (B) is a perspective view of plug portion 10 in a state where first member 3 and second member 4 are separated. Fig. 3 (C) is a plan view showing the structure of the

respective contacts

35, 45 of the first member 3 and the second member 4 constituting the plug portion 10. Fig. 4 (a1) is a sectional view of the first member 3 of the section a1-a1 of fig. 3 (B), fig. 4 (B1) is a sectional view of the first member 3 of the section a2-a2 of fig. 3 (B), fig. 4 (C1) is a sectional view of the first member 3 of the section A3-A3 of fig. 3 (B), fig. 4 (a2) is a sectional view of the second member 4 of the section B2-B2 of fig. 3 (B), and fig. 4 (B2) is a sectional view of the second member 4 of the section B1-B1 of fig. 3 (B). Fig. 5 (a) is a perspective view of plug portion 10 in a state where first member 3 and second member 4 are combined. Fig. 5 (B) is a vertical cross-sectional view of plug portion 10 taken along line D-D in fig. 5 (a). Fig. 5 (C) is a vertical cross-sectional view of plug portion 10 taken along section D-D in fig. 5 (a), and illustrates the dimensional restrictions of the respective portions.

< first part >

Section for insertion

The insertion portion 31 of the first member 3 has a rectangular cross section, and has a square-bar-shaped insertion base 31a extending in the longitudinal direction of the duct guide 100 when attached to the duct guide 100.

The insertion base 31a has: a top-surface mounting-wall opposed surface 31f which is brought into close proximity to and opposed to the top-surface mounting wall 101c of the duct guide main body 101 to a nearly abutting extent when mounted to the duct guide 100; an exposed surface 31j exposed from the opening 104 of the duct guide 100 on the opposite side of the top-surface-mounting-wall facing surface 31 f; a back surface 31e (one slide engaging surface, abutting surface) which is a surface perpendicular to the top surface mounting wall opposing surface 31f and which is pressed against each other by abutting against each other while facing away from each other when the first member 3 and the second member 4 are combined; and a side wall facing surface 31k facing the side wall 101a of the duct guide main body 101 on the opposite side of the back surface 31e (see fig. 5C).

Most of the exposed surface 31j is connected to the exposed portion 32 of the first member 3, and the insertion base 31a and the exposed portion 32 are integrated. When the first member 3 and the second member 4 are combined, the remaining portion of the exposed surface 31j is covered with the exposed portion 42 of the second member 4 (see fig. 3B and 5 a).

The insertion base 31a is provided with a corner cut-out portion 31i formed by cutting out a corner at an intersection portion where the back surface 31e intersects with the end surface 31g of the insertion base 31a on the side covered with the exposed portion 42 of the second member 4 when the first member 3 and the second member 4 are combined (see fig. 3B).

Therefore, when the second member 4 is attached to the duct rail 100, the first member 3 having the insertion portion 31 inserted into the duct rail 100 is slid to a position where it abuts against the second member 4 at a position slightly apart from the second member 4, and the first member 3 and the second member 4 are combined by sliding them, the corner cut-out portion 31i can easily slide the second member 4 while abutting against the first member 3, and guide one back surface 41e (the other engaging surface, the abutting surface) of the second member 4 to abut against one back surface 31e of the first member 3.

The insertion base 31a has an insertion guide projection 31d on a side of the side wall facing surface 31k close to the top surface mounting wall facing surface 31 f. The insertion guide projection 31d is a plate-shaped projection that projects outward from the side wall facing surface 31k and extends in the longitudinal direction (see fig. 5C).

The insertion base 31a has one retaining projection 31b on a side of the side wall facing surface 31k close to the exposed surface 31 j. The first retaining projection 31b is a plate-shaped projection that projects outward from the side wall facing surface 31k and extends in the longitudinal direction. When attached to duct guide 100, one retaining projection 31b abuts against the inner surface of guide 102 a.

The insertion base body 31a is formed with a contact storage groove 31c in parallel with an area sandwiched by the insertion guide projection 31d and one retaining projection 31b of the side wall facing surface 31 k. The contact storage groove 31c stores a part of the contact 35.

The surface of one retaining projection 31b that contacts guide 102a of duct guide 100 is formed as a horizontal surface parallel to guide 102 a. The rear surface 31e is formed at a right angle to the one retaining projection 31 b. That is, the back surface 31e is formed as a plane (a plane whose normal direction is the width direction of the duct rail 100) extending in the longitudinal direction and the height direction of the duct rail 100.

Contact element

The contact 35 includes a base 35a formed of a conductive metal, a support 35b, a plate spring 35C, and a contact terminal portion 35d (see fig. 3C).

The base portion 35a is a plate body bent in an inverted L-shape in vertical section, the horizontal plane portion 35a1 is fixed by screws 36 to a horizontal plane of the AC terminal block 34, and the support portion 35b of the vertical plane portion 35a2 is fixed to a vertical plane of the AC terminal block 34 (see fig. 4).

The support portion 35b is a long plate body buried along the contact storage groove 31c, and is screw-fastened to the contact storage groove 31c at two places by

screws

36a, 36 b. The vertical surface portion 35a2 of the base portion 35a is coupled to a part of the long side of the support portion 35b (see fig. 3C).

The plate spring portion 35c is a long plate spring having one end to which the support portion 35b is connected at one end and projecting obliquely outward from the contact storage groove 31c with the one end as a base point. The leaf spring portion 35c has a contact terminal portion 35d connected to the other end. The supporting portion 35b side of the plate spring portion 35c is fixed, and has an elastic force that pushes back when the contact terminal portion 35d as a free end connected to the other end is pressed toward the contact storing groove 31c side.

The contact terminal portion 35d is a substantially trapezoidal plate body, and the other end of the plate spring portion 35c is connected to the lower bottom edge 35d1 of the long side. The contact terminal portion 35d is arranged perpendicularly with respect to the contact storage groove 31c, and the upper bottom edge 35d2 of the short side is arranged on the side away from the contact storage groove 31c and faces the contact storage groove 31c in a substantially parallel manner.

The contact terminal portion 35d is preferably arranged such that the upper base 35d2 does not protrude outward beyond the distal ends of the insertion guide projection 31d and the one anti-slip projection 31 b.

The upper bottom edge 35d2 may be slightly convexly curved outward.

Thus, when the contact terminal portion 35d is attached to the duct rail 100, the upper bottom edge 35d2 of the contact terminal portion 35d contacts the one conductor wire 103a of the duct rail 100, and receives the spring force from the plate spring portion 35C, thereby pressing the one conductor wire 103a (see fig. 5C).

In addition, when the upper bottom edge 35d2 is slightly curved convexly outward, the upper bottom edge 35d2 slides on the one conductor wire 103a and the position of the contact point automatically moves when the pipe guide 100 is attached.

Therefore, when the pipe guide 100 is mounted, good contact between the contact terminal portion 35d and the conductor line 103a can be achieved without much effort.

< second part >

Section for insertion

The insertion portion 41 of the second member 4 has a rectangular cross section, similar to the insertion portion 31 of the first member 3, and has a square-bar-shaped insertion base 41a extending in the longitudinal direction of the duct guide 100 when attached to the duct guide 100.

The insertion base 41a has: a top-surface mounting-wall opposed surface 41f which is brought into close proximity to and opposed to the top-surface mounting wall 101c of the duct guide main body 101 to a nearly abutting extent when mounted to the duct guide 100; an exposed surface 41j exposed from the opening 104 of the duct guide 100 on the opposite side of the top-surface-mounting-wall facing surface 41 f; a back surface 41e that is a surface perpendicular to the top surface mounting wall facing surface 41f and that is pressed against each other by coming into contact with each other while facing away from each other when the first member 3 and the second member 4 are joined together; and a side wall facing surface 41k facing the side wall 101b of the duct guide main body 101 on the opposite side of the back surface 41e (see fig. 5C).

A part of the exposed surface 41j is connected to the exposed portion 42 of the second member 4, and the insertion base 41a and the exposed portion 42 are integrated. When the first member 3 and the second member 4 are combined, most of the remaining exposed surface 41j is covered with the exposed portion 32 of the first member 3 (see fig. 3B and 5 a).

The insertion base 41a has an insertion guide projection 41d on a side of the side wall facing surface 41k close to the top surface mounting wall facing surface 41 f. The insertion guide projection 41d is a plate-shaped projection that projects outward from the side wall facing surface 41k and extends in the longitudinal direction (see fig. 5C).

The insertion base 41a has another retaining projection 41b on the side of the side wall facing surface 41k close to the exposed surface 41 j. The other retaining projection 41b is a plate-shaped projection that projects outward from the side wall facing surface 41k and extends in the longitudinal direction. When attached to duct guide 100, the other retaining projection 41b abuts against the inner surface of guide 102 b.

The insertion base body 41a is formed with a contact storage groove 41c in parallel with an area sandwiched by the insertion guide projection 41d and the other retaining projection 41b of the side wall opposed surface 41 k. The contact storage groove 41c stores a part of the contact 45.

The surface of the other retaining projection 41b that contacts the guide 102b of the duct guide 100 is formed as a horizontal surface parallel to the guide 102 b. The rear surface 41e is formed at a right angle to the other retaining projection 41 b. That is, the back surface 41e is formed as a plane (a plane whose normal direction is the width direction of the duct rail 100) extending in the longitudinal direction and the height direction of the duct rail 100.

Contact element

The contact 45 of the second member 4 includes a base 45a, a support 45b, a plate spring 45C, and a contact terminal 45d, which are made of conductive metal, similarly to the contact 35 of the first member 3 (see fig. 3C).

The contact 45 of the second member 4 is bilaterally symmetrical to the contact 35 of the first member 3, except for the connection position between the base 45a and the support 45 b. The difference in the coupling position of the base portion 45a and the support portion 45b is caused by the difference in the arrangement of the AC terminal block portion 44 to which the base portion 45a is screw-fastened and the arrangement of the AC terminal block portion 34 of the first member 3.

The base portion 45a, the support portion 45b, the plate spring portion 45c, and the contact terminal portion 45d of the contact 45 have the same structure and function as those of the base portion 35a, the support portion 35b, the plate spring portion 35c, and the contact terminal portion 35d of the corresponding contact 35, and therefore, description thereof is omitted.

< size limitation >

The distance W31d between the front end of the insertion guide projection 31d of the first member 3 and the back surface 31e is equal to or less than the width W104 of the opening 104 of the duct rail 100 (see fig. 5C).

The distance W31b between the tip of the first retaining projection 31b and the rear surface 31e (the width of the insertion portion 31) of the first member 3 is equal to or less than the width W104 of the opening 104 of the duct guide 100.

The distance W41d between the front end of the insertion guide projection 41d of the second member 4 and the back surface 41e is formed to be equal to or less than the width W104 of the opening 104 of the duct guide 100.

The distance W41b between the tip of the other retaining projection 41b of the second member 4 and the back surface 41e (the width of the insertion portion 41) is equal to or less than the width W104 of the opening 104 of the duct guide 100.

Exposed portion 32 of first member 3 is configured to have a lateral width W32 smaller than lateral width W101 of duct guide body 101 and larger than width W104 of opening 104 of duct guide 100, and to close opening 104 when mounted to duct guide 100.

The lateral width W32 of the exposed portion 32 of the first member 3 is preferably equal to or slightly larger than the sum of the distance W31b (the width of the insertion portion 31) between the front end of one retaining projection 31b of the first member 3 and the back surface 31e and the distance W41b (the width of the insertion portion 41) between the front end of the other retaining projection 41b of the second member 4 and the back surface 41 e.

The sum of the distance W31a between the side wall facing surface 31k and the back surface 31e of the first member 3 and the distance W41a between the side wall facing surface 41k and the back surface 41e of the second member 4 is preferably equal to or less than the width W104 of the opening 104 of the duct guide 100, and the distance W31a is substantially the same as the distance W41 a. In this embodiment, the sum of the distance W31a and the distance W41a is formed substantially the same as the width W104. Thus, when the first member 3 and the second member 4 are brought into contact with each other to be integrated, the plug portion 10 formed of the first member 3 and the second member 4 is attached to the duct guide 100 with the following degree of stability: the slide mechanism is not easily moved in the sliding direction by its own weight or the like, and can slide when a person slides the slide mechanism with a strong force.

The difference between the distance W31b and the distance W31a of the first member 3 may be equal to or shorter than the projection length on the inner surface side of the guide 102a (the length in the width direction of the guide 102), and may be equal to or longer than half, preferably equal to or longer than two-thirds, of the projection length on the inner surface side of the guide 102a (the length in the width direction of the guide 102). Thus, the guide 102a is in proper ground contact with the one retaining projection 31b, and the first member 3 can be prevented from being removed from the duct guide 100.

The difference between the distance W41b and the distance W41a of the second member 4 may be equal to or shorter than the projection length on the inner surface side of the guide 102b (the length in the width direction of the guide 102), or may be equal to or longer than the projection length on the inner surface side of the guide 102b (the length in the width direction of the guide 102), and may be equal to or longer than half, preferably equal to or longer than two-thirds, of the projection length on the inner surface side of the guide 102 b. Thus, the guide 102b is in proper ground contact with the other retaining projection 41b, and the second member 4 can be prevented from coming off the duct guide 100.

Gap G31b between one of integrally formed retaining projections 31b of first member 3 and exposed portion 32(32a) is formed to be slightly larger than thickness T102 of guide 102a of duct rail 100. This prevents the guide 102a fitted into the gap G31b from rattling, and allows the first member 3 to slide smoothly along the guide 102 a.

The step GH41b between the exposed surface 41j of the insertion base 41a of the second member 4 and the other retaining projection 41b is preferably slightly larger than the thickness T102 of the guide 102b of the duct rail 100.

The distance H31a between the top mounting wall facing surface 31f of the insertion base 31a of the first member 3 and the exposed surface 31j is preferably slightly shorter than the distance D105 between the inner surface of the top mounting wall 101c of the duct rail 100 and the outer surface of the guide 102 a.

The distance H41a between the top mounting wall facing surface 41f of the insertion base 41a of the second member 4 and the exposed surface 41j is preferably slightly shorter than the distance D105 between the inner surface of the top mounting wall 101c of the duct rail 100 and the outer surface of the guide 102 b.

< installation in relation to a duct guide >

Fig. 6 (a) is an explanatory diagram illustrating an operation of attaching first member 3 to duct guide 100 in a cross-sectional view, fig. 6 (B) is an explanatory diagram illustrating an operation of attaching second member 4 to duct guide 100 in a cross-sectional view, and fig. 6 (C) is a cross-sectional view illustrating a state where first member 3 and second member 4 are attached to duct guide 100.

(1) Insertion of the first part 3

In a state where exposed portion 32 is on the opposite side (ground side) of duct rail 100, insertion portion 31 is brought close to opening 104 of duct rail 100 provided on the top surface, insertion portion 31 is inserted into hollow interior 105, and top surface mounting wall opposing surface 31f of insertion base 31a is pressed toward the inner side surface of top surface mounting wall 101 c. The top-surface-mounting-wall facing surface 31f of the insertion base 31a is slid toward the one-side retaining projection 31b side (see (a1) of fig. 4) in the width direction while being pressed toward the inner surface of the top-surface mounting wall 101c, and the side-wall facing surface 31k is brought close to the side wall 101a of the duct rail 100 until the side-wall facing surface 31k of the insertion base 31a abuts against the tip end of the guide 102a of the duct rail 100. At this time, the contact terminal portion 35d of the first member 3 is pressed against the conductor wire 103a of the pipe guide 100 by the elastic force of the plate spring portion 35c and brought into contact with the conductor wire 103a of the pipe guide 100, thereby bringing the conductive state into a conductive state.

The insertion of the first member 3 is preferably performed in a state where the AC/DC converter 5 is fixed to the AC/DC converter setting part 33 of the first member 3. This can reduce the labor and time required to fix the AC/DC converter 5 to the first member 3 by screwing or the like toward the top surface.

(2) Insertion of the second part 4

At a position apart from the first member 3 in the longitudinal direction of the duct rail 100, in a state where the exposed portion 42 is on the opposite side (ground side) of the duct rail 100, the insertion portion 41 is made to approach toward the opening 104 of the duct rail 100 provided on the top surface, the insertion portion 41 is inserted into the hollow interior 105, and the top surface mounting wall facing surface 41f of the insertion base 41a is pressed toward the inner side surface of the top surface mounting wall 101 c.

The top-surface-mounting-wall facing surface 41f of the insertion base 41a is slid toward the other retaining projection 41B side in the width direction (see (B2) of fig. 4) while being pressed against the inner surface of the top-surface mounting wall 101c, and the side-wall facing surface 41k is brought close to the side wall 101B of the duct rail 100 until the side-wall facing surface 41k of the insertion base 41a abuts against the tip end of the guide 102B of the duct rail 100. At this time, the contact terminal portion 45d of the second member 4 is pressed against the conductor wire 103b of the duct guide 100 by the elastic force of the plate spring portion 45c and brought into contact with the conductor wire 103b of the duct guide 100, thereby being able to conduct electricity.

(3) Abutment of the first member 3 with the second member 4

The first member 3 and the second member 4 are slid in a direction in which they approach each other in one or both directions, and as shown in fig. 2 (B), the exposed portion 32 of the first member 3 and the exposed portion 42 of the second member 4 are brought into contact with each other, that is, the back surface 31e of the first member 3 and the back surface 41e of the second member 4 are brought into contact with each other at a sufficient surface in the longitudinal direction and the height direction. Thus, the back surfaces 31e and 41e are firmly brought into contact with each other.

The height of the abutment surface can be seven or more, preferably eight or more, more preferably nine or more, and preferably almost all, of the height from the inner surface of the ceiling surface attachment wall 101c of the duct rail 100 to the guide 102.

The length of the contact surface (the length of the duct guide 100 in the longitudinal direction) may be equal to or more than one quarter, preferably equal to or more than one half, more preferably equal to or more than the same length, and preferably equal to or more than two times the height of the contact surface.

Further, the

rear surfaces

31e and 41e (contact surfaces) may be formed with irregularities (horizontal stripe patterns) having a small height of a plurality of lines extending parallel to the longitudinal direction of the duct guide 100. Thus, the back surfaces 31e and 41e are easily slid in the longitudinal direction of the contact surfaces in the contact state, but are hardly slid in the height direction of the contact surfaces. Therefore, even if a large shear stress is applied in the height direction between the

rear surfaces

31e and 41e by the weight of the suspended power supply unit 1 for a duct rail or the like, the

rear surfaces

31e and 41e can firmly abut each other so as to be difficult to slide in the height direction.

(4) Electrical connection

The wiring connector Cf is connected to the wiring connector Cm, and the base portion 45a of the contact 45 is electrically connected to the other of the AC input portions TI1 and TI2 of the AC/DC converter 5.

(5) Fixing

The relative position of the first member 3 and the second member 4 is fixed by an appropriate method such as screw fastening so that the relative position of the first member 3 and the second member 4 does not change with time or vibration.

(6) Finish machining

The unit case 2 is attached so as to surround the AC/DC converter 5, and the unit case 2 is fixed to the first member 3, the second member 4, the AC/DC converter 5, or a plurality of them by means of screw fastening, hooking by an appropriate hooking fitting, or the like. In this case, the wiring connectors Cf and Cm are also covered by the unit case 2, so that the wiring connectors Cf and Cm are not visible, and the appearance is good.

(7) Connection of LED billboards and the like

The DC lines La and Lb provided in the power supply unit 1 for a duct rail are connected to connection terminals of devices such as an LED signboard. In this way, the power supply unit 1 for a duct rail can be attached to the duct rail 100 that supplies AC power, and DC power can be supplied from the power supply unit 1 for a duct rail to devices such as LED billboards.

With the above configuration, it is possible to provide the power supply unit 1 for a duct rail that does not use the turning operation of the operating lever when attaching and detaching to and from the duct rail 100.

The plug portion 10 of the power supply unit 1 for a duct guide is constituted by a first member 3 and a second member 4, the first member 3 engaging with and conducting electricity to one side in the width direction of the duct guide 100, and the second member 4 engaging with and conducting electricity to the other side in the width direction of the duct guide 100. Therefore, the

insertion portions

31 and 41 of the first member 3 and the second member 4 are inserted into the hollow interior 105 of the duct guide 100 at different positions in the longitudinal direction, and one or both are slid to bring the

back surfaces

31e and 41e into contact with each other at the same position in the longitudinal direction, thereby completing the plug portion 10, and enabling engagement with and energization to the duct guide 100 to be easily achieved.

The installation work of power supply unit 1 for a duct rail to duct rail 100 is performed by inserting first member 3 through opening 104, inserting second member 4 through opening 104, and sliding them to be arranged at positions in contact with each other in the width direction, thereby enabling stable arrangement of power supply unit 1 for a duct rail. Then, since the connection and the installation of the unit case 2 can be completed only to the extent that they are arranged, it is possible to avoid a complicated installation work of extending arms upward while facing upward on the upper surface of a ladder or the like at the time of installation work, and it is possible to easily and easily install the unit case.

The present invention is not limited to the above embodiments, and various embodiments are possible.

For example, the first member 3 may have the following structure: in fig. 3C, a portion above the center in the vertical direction (the longitudinal direction of duct rail 100) is formed to be longer in the vertical direction in the figure (for example, a length twice to five times as long as that of the present embodiment) in the longitudinal direction of duct rail 100, the length of second member 4 is maintained as it is, and a third member (not shown) having the same shape as the portion above the center in the vertical direction in the figure of second member 4 and having the shape of contact 45 removed is additionally used. In this case, the first member 3 and the second member 4 can be fixed at positions where the exposed

portions

32 and 42 are in contact with each other, and the third member can be fixed by being in contact with the vicinity of the upper end of the first member 3 in the figure. This enables the first member 3 to be formed long and stably provided, and the second member 4 and the third member to be slid from both ends in the longitudinal direction and stably provided. If the first member 3 and the second member 4 are simply formed to be long, the sliding distance becomes long, the contact surface becomes large, and sliding becomes difficult due to friction from the middle, but this structure can prevent this and be easily and stably attached to the duct guide 100.

For attachment, the insertion portion 41 (see fig. 3B) of the second member 4 may be provided with a chamfered portion and a tapered portion so that the thickness in the width direction is tapered at the start portion of the sliding movement (the upper right portion in fig. 3B), the chamfered portion may be provided on the back surface 41e (see fig. 5C), and the tapered portion may be provided on the side wall facing surface 41k (see fig. 5C). The tapered portion may have a tapered shape over a longer distance than the chamfered portion. In the case of such a configuration, the chamfered portion prevents hooking when the first member 3 and the second member 4 start to overlap each other by sliding relative to each other, and the tapered portion can smooth the movement when the members further slide from the start of overlapping.

Further, AC/DC converter 5 may be placed on duct rail 100 suspended from the ceiling surface. In this case, the current-carrying wires may be extended from the

contacts

35 and 45 of the first member 3 and the second member 4, respectively, and passed around the duct rail 100 from the opening 104 of the duct rail 100 to be connected to the AC input portions TI1 and TI2 of the AC/DC converter 5 above. In this case, first member 3 and second member 4 can be firmly fixed to duct rail 100 and stably energized, thereby converting AC power to DC power.

Industrial applicability

The present invention can be applied to an industry in which a device driven by DC power is electrically connected to a pipe guide through which AC power flows and is fixed.

Description of the reference symbols

1: a power supply unit for a pipe guide; 3: a first member; 4: a second component; 5: an AC/DC conversion section; 31. 41: an insertion portion; 31 b: one side is anti-drop and raised; 31e, 41 e: a back side; 31k, 41 k: the opposite side of the side wall; 35. 45, and (2) 45: a contact member; 41 b: the other side is anti-drop and raised; w31a, W31b, W41a, W41 b: a distance; w104: a width; 100: a pipeline guide rail; 101a, 101 b: a side wall; 102: a guide; 103: a conductor line; 104: and (4) opening.

Claims

1. A power supply unit for a duct rail, which is used by being attached to a hollow duct rail formed in a long shape having a substantially コ -shaped cross section and opening downward, wherein conductor lines extending in the longitudinal direction are provided on the inner sides of two opposing side walls, respectively, wherein the duct rail is provided with two guides extending inward from the opening edges of the two side walls in the longitudinal direction and an opening between the two guides,

wherein, this power supply unit for pipeline guide rail possesses:

a first member having an insertion portion at least a portion of which is inserted into the hollow from the opening;

a second member that abuts against the first member and has an insertion portion at least a part of which is inserted into the hollow portion from the opening; and

an AC/DC conversion section connected to the first member,

the first member has, in the insertion portion, one retaining projection that is brought into contact with an inner surface of one of the guides to retain the guide, and one contact that is brought into contact with one of the conductor lines to be energized, and the insertion portion is formed to have a width equal to or less than a width of the opening,

the second member has a second retaining projection that is brought into contact with an inner surface of the other guide to retain the second contact, and a second contact that is brought into line contact with the other conductor to be energized, and the width of the insertion portion having the second retaining projection and the second contact is set to be equal to or less than the width of the opening,

the state in which the insertion portion of the first member and the insertion portion of the second member are inserted into the hollow portion and positioned on one side and the other side in the width direction so as to abut against each other is a state in which they are attached to the duct guide.

2. The power supply unit for a piping rail according to claim 1,

the insertion portion of the first member has one slide engagement surface on a surface opposite to the one retaining projection,

the insertion portion of the second member has a second slide engagement surface on a surface opposite to the second retaining projection,

the power supply unit for a duct guide is configured such that, when one slide engagement surface of the first member abuts against the other slide engagement surface of the second member, the one retaining projection and the other retaining projection abut against and are retained by the one guide and the other guide, respectively.

3. The power supply unit for a piping rail according to claim 2,

the first member and the second member each have a side wall facing surface facing the side wall of the duct guide on the opposite side of the one slide engaging surface and the other slide engaging surface that are in contact with each other,

the power supply unit for a guide rail is configured such that the sum of the distance from the side wall facing surface of the first member to the one slide-engagement surface and the distance from the side wall facing surface of the second member to the other slide-engagement surface is equal to or less than the width of the opening, and the one retaining projection and the other retaining projection project from the side wall facing surfaces toward the side walls.