JP6275438B2 - Lamp installation structure - Google Patents

Description

  The present invention relates to a structure in which a lamp installed on a wall is connected to a power cable installed on the wall via a connector.

  For example, in a tunnel or the like, lamps are installed on the wall at predetermined intervals in the longitudinal direction of the road. Electric power is supplied to the many lamps by connecting branch lines that are branched from a trunk line of a power cable laid along the longitudinal direction of the road to the wall portion.

  The lamp and the branch line are connected via a connector. This connector has a configuration in which a plug having a male terminal and a receptacle having a female terminal are paired, and either the plug or the receptacle is connected to the wiring of the lamp, and the other is connected to the branch line. Connected (see Patent Document 1).

JP 2003-346970 A

  In the conventional example according to Patent Document 1, when the lamp is detached from the wall portion, the weight of the lamp acts on the connector. At this time, if the lamp is heavy, the plug constituting the connector and the receptacle may be disconnected, and the lamp may fall on the road.

  In view of such circumstances, the present invention provides a structure in which a lamp installed on a wall is connected to a power cable laid on the wall via a connector, even if the lamp is detached from the wall. It aims to make it possible to avoid falling on the ground.

The present invention is a structure in which a lamp installed on a wall is connected to a power cable laid on the wall via a connector, and the connector includes a first member having a male terminal and the male terminal. The first and second members are configured such that a second member having a female terminal to be electrically connected is paired and a fastening portion for coupling the first and second members to each other is distributed. One of them is attached to the lamp, and the other is attached to the power cable, and both the members and the fastening portion have a load bearing capacity sufficient to support the weight of the lamp. A reinforcing body set to have a load bearing capacity sufficient to support the weight of the lamp is provided between the outer sheath and the internal wiring of the power cable. The body uses wire rods It is a tube knitted in the shape of a shell, protrudes outward from the outer skin of the power cable and turned over so as to cover the outer diameter side of the outer skin, and the member to be attached to the power cable is An inner ring that is fitted between the outer skin and the reinforcing body on the inner diameter side of the turned-up portion, an outer ring that is fitted and mounted on the outer diameter side of the turned-up portion, and an outer diameter side of the outer ring A cylindrical body that is fitted and mounted to the body, a waterproof cap that is fitted and fitted to the outer diameter side of the body, and a shaft on the outer diameter side of a portion of the body that protrudes outward in the axial direction from the waterproof cap a locking cap which is exterior so as to be relatively displaced in direction and the circumferential direction, fitting to the inner diameter side of the portion which is projected outward in the axial direction than the waterproof cap in the body A member to which the lamp is to be attached, the outer diameter surface inserted in a non-contact manner into the inner diameter surface of the lock cap and the outer diameter surface of the housing. A cylindrical body having an inner diameter surface, and the waterproof cap is caulked inward in the radial direction on the body of a member to which the power cable is to be attached. The reinforcing body, the inner ring, the outer skin, the turned-up portion, and the outer ring are sandwiched and overlapped in the radial direction, and the fastening portion includes a protrusion provided on the inner diameter surface of the lock cap. And a lock groove provided on an outer diameter surface of the body of a member to which the lamp is to be attached, the protrusion being engaged and disengaged, and the lock When the cap is fitted to the outer diameter side of the body of the member to which the lamp is to be attached from the axial direction, the protrusion enters the lock groove, and in that state, the lock cap is in a predetermined direction. The projection is configured to be engaged with the back of the lock groove by being rotated by a predetermined angle.

  In this configuration, since the reinforcing body serves as a reinforcing material for the power cable, the mechanical strength of the power cable itself is increased. Moreover, in the said structure, since the 1st member and 2nd member which comprise the said connector are made into the material (metal etc.) provided with predetermined load-bearing capability, those coupling strengths are raised as much as possible. Furthermore, in the said structure, since the reinforcement body of the said power cable is couple | bonded with the member used as the attachment object of the said power cable, the joint strength of the said power cable and its attachment object member is raised as much as possible.

  As a result, in the state where the first member and the second member are connected, the weight of the lamp acts on the connector and the branch line as the lamp is detached from the wall. However, the first member and the second member constituting the connector do not need to be separated, and the lamp is supported while being hung from the power cable.

  For this reason, even if the lamp is removed from the wall, the lamp does not need to fall on the ground, and remains on when the lamp is lit. It becomes possible to keep the state.

Moreover, in the said structure, since the said reinforcement body used as the reinforcement material of the said power cable is made into the thin mesh tube, it becomes unnecessary to make the installation space of the said reinforcement body in a power cable uselessly enlarged. This is advantageous in suppressing an increase in equipment costs, such as eliminating the need for major changes in the design of existing power cables.

  In the present invention, in a structure in which a lamp installed on a wall is connected to a power cable installed on the wall via a connector, even if the lamp is detached from the wall, it is prevented from falling to the ground. It becomes possible.

1 is a front view showing an overall appearance of an embodiment of a lamp installation structure according to the present invention. It is a figure which shows the state which isolate | separated the 1st member and 2nd member of FIG. It is a figure which shows the cross section of the 1st member of FIG. 2, and a 2nd member. It is a partial front view which shows the branch line of the electric power cable of FIG. 2 and FIG. FIG. 5 is a cross-sectional view taken along line (5)-(5) in FIG. 4. It is sectional drawing for demonstrating the procedure which couple | bonds the branch line shown in FIG. 4, and the 2nd member, and has shown the initial stage. It is sectional drawing which shows the continuation of FIG. FIG. 8 is a cross-sectional view showing a further continuation of FIG. 7. It is a figure which shows typically the installation form of the lamp of FIG. FIG. 10 is a cross-sectional view taken along line (10)-(10) in FIG. 9.

  BEST MODE FOR CARRYING OUT THE INVENTION Best modes for carrying out the present invention will be described in detail below with reference to the accompanying drawings.

  1 to 10 show an embodiment of the present invention. In the figure, 1 is a lamp, 2 is a trunk line of a power cable, 3 is a branch line of the power cable, and 4 is a connector.

  The lamp 1 is installed on an appropriate wall 5. A power cable trunk 2 laid on the wall 5 is connected to the lamp 1 via a branch line 3 and a connector 4.

  The connector 4 has a configuration in which the first member 20 and the second member 30 are paired. The first member 20 has a male terminal 21, and the second member 30 has a female terminal 31, and the male terminal 21 of the first member 20 and the female terminal 31 of the second member 30 are fitted together. So that they are electrically connected.

  Next, with reference to FIG. 2 and FIG. 3, the structure of the 1st, 2nd members 20 and 30 is demonstrated in detail.

  The first member 20 is called a “receptacle”, and is attached in a state of penetrating inside and outside one side of the case 1 a of the lamp 1. The first member 20 includes a body 22, a core 23, and a tightening ring 24.

  The body 22 is formed of a cylindrical member, and includes an outer region 22a that protrudes outside the case 1a of the lamp 1, an inner region 22b that protrudes inside the case 1a of the lamp 1, and an outer region 22a and an inner region 22b. A radially outward two-stage flange 22c provided.

  A seal ring 25 such as an O-ring is attached to the outer diameter side of the outer region 22 a of the body 22 in order to seal a joint portion between the first member 20 and the second member 30.

  The core 23 is attached with a plurality of male terminals 21 and is housed and fixed in the inner region 22 b of the body 22. The core 23 is formed in a cylindrical shape, and is provided with through holes (reference numerals omitted) in which a plurality of male terminals 21 are individually accommodated. A plurality of wirings 1b of the lamp 1 are respectively electrically connected to the plurality of male terminals 21 in each through hole.

  The tightening ring 24 is used to fix the first member 20 to the case 1 a of the lamp 1. The tightening ring 24 is screwed onto the outer periphery of the inner region 22b of the body 22 so that one side of the case 1a is sandwiched between the tightening ring 24 and the large diameter portion of the two-stage flange portion 22c of the body 22. The first member 20 is fixed to the case 1 a of the lamp 1.

  The second member 30 is called, for example, a “plug”, and is attached to the tip of the branch line 3 of the power cable. The second member 30 includes a body 32, a housing 33, a waterproof cap 34, and a lock cap 35.

  A plurality of female terminals 31 are attached to a housing 33 fixed in the body 32, and a plurality of internal wirings 3b of the branch line 3 are electrically connected to the plurality of female terminals 31, respectively.

  The body 32 is composed of a cylindrical member whose outer diameter is gradually reduced in one direction, such as large, medium, and small. The housing 33 is fitted and fixed in the inner hole of the large-diameter portion 32a of the body 32. In the inner hole of the small diameter portion 32b of the body 32, the tip of the branch line 3 is inserted and fixed in the form described below.

  The housing 33 is provided with through holes (reference numerals omitted) to which the plurality of female terminals 31 are individually attached. In each through hole of the housing 33, the plurality of internal terminals 3 b of the branch line 3 are electrically connected to the plurality of female terminals 31 correspondingly. The outer shape of the housing 33 is shaped to fit into the outer region 22a of the body 22 of the first member 20.

  The waterproof cap 34 is fitted and mounted on the outer diameter side of the small diameter portion 32b of the body 32 so as to cover the connection portion between the female terminal 31 of the housing 33 and the internal wiring 3b of the branch line 3 from the outside.

  The lock cap 35 is used to connect the second member 30 to the first member 20. The lock cap 35 is attached to the outer diameter side of the large-diameter portion 32 a of the body 32 so as to be relatively displaceable in the axial direction and the circumferential direction, and the small-diameter portion of the two-stage flange portion 22 c of the body 22 of the first member 20. The second member 30 is connected to the first member 20 by being engaged with the outer periphery.

  As a method of this engagement, the protrusions 35a provided at several places (for example, two places) on the inner peripheral surface of the lock cap 35 are used at several places (for example, two places on the outer peripheral surface of the small diameter portion of the two-stage flange portion 22c. And a lock groove 22d provided at a location).

  That is, the protrusion 35a of the lock cap 35 is aligned with the entrance of the lock groove 22d, and the lock cap 35 is fitted into the outer periphery of the small diameter portion of the two-step flange 22c from the axial direction, and then the lock cap 35 is moved in a predetermined direction. The first member 20 and the second member 30 are locked in a non-separable state in a state where the first member 20 and the second member 30 are connected.

  Then, when separating the first member 20 and the second member 30, the lock cap 35 may be rotated in the opposite direction to that at the time of locking and then operated so as to be pulled out in the axial direction.

  By the way, the alignment between the protrusion 35a and the entrance of the lock groove 22d is visually confirmed by alignment marks 35b and 22e provided on the lock cap 35 and the large diameter portion of the two-stage flange portion 22c of the body 22 of the first member 20. It can be easily done with.

  As is apparent from the above, the protrusion 35a of the lock cap 35 and the lock groove 22d of the body 22 of the first member 20 correspond to a “fastening portion” described in the claims.

  In this embodiment, when the lamp 1 is removed from the wall 5, the lamp 1 is supported by being suspended from the branch line 3, thereby preventing the lamp 1 from falling on the ground. It is devised to do.

  That is, after the mechanical strength of the branch line 3 itself of the power cable is increased as much as possible, the coupling strength between the first member 20 fixed to the lamp 1 and the second member 30 to which the branch line 3 is attached. In addition, the coupling strength between the branch line 3 and the second member 30 is increased as much as possible.

  First, in order to increase the mechanical strength of the branch line 3 itself as much as possible, the reinforcing body 6 is provided inside the branch line 3 of the power cable. The reinforcing body 6 has a load bearing capacity sufficient to support the weight of the lamp 1.

  Specifically, for example, as shown in FIGS. 4 and 5, the branch line 3 has a load-bearing capability sufficient to support the weight of the lamp 1 between the outer skin 3 a of the branch line 3 and the plurality of internal wirings 3 b. The reinforcement body 6 is interposed, and it has a configuration like a coaxial cable.

  The reinforcing body 6 is a tube in which a wire such as metal (for example, stainless steel) or carbon is knitted in a mesh shape. Since the reinforcing body 6 serves as a reinforcing material for the branch line 3, the mechanical strength of the branch line 3 itself is increased. Incidentally, the load bearing capacity of the reinforcing body 6 may be set as appropriate according to the weight of the lamp 1 or the like. However, when the weight of the lamp 1 is set to 40 kg, for example, the impact when it falls. Since the load is about 500 kg, the load bearing capacity of the reinforcing body 6 is preferably set to, for example, about 500 kg or more in terms of breaking strength.

  Further, in order to increase the coupling strength between the first member 20 and the second member 30 as much as possible, the body 22 of the first member 20, the body 32 of the second member 30, and the lock cap 35 have a predetermined strength or more. It can be formed of a metal (for example, an aluminum alloy, a magnesium alloy, or the like) or a synthetic resin (for example, a fluorine-based resin such as polyamide 66 or an appropriate engineering plastic) having a predetermined strength or more.

  Furthermore, in order to increase the coupling strength between the branch line 3 and the second member 30 as much as possible, the connection between the reinforcing body 6 provided in the branch line 3 of the power cable and the body 32 of the second member 30 is as follows. It is in the form to do.

  A coupling form of the reinforcing body 6 and the body 32 of the second member 30 will be described in detail with reference to FIGS. 6 to 8.

  As shown in FIG. 4, the reinforcing body 6 and the internal wiring 3b are exposed by removing the outer skin 3a at the tip edge of the branch line 3, and as shown in FIG. 6, the exposed reinforcing body 6 The inner ring 7 is fitted on the outer diameter side. At this time, the inner ring 7 is inserted into the inner diameter side of the outer skin 3a where the branch line 3 remains by a predetermined length. The inner ring 7 is called an “inner ferrule”, and is formed of a metal material such as a steel material, an aluminum alloy, or a magnesium alloy, for example.

  Thereafter, as shown in FIG. 7, the reinforcing body 6 is turned over to the outer diameter side so as to cover the outer skin 3 a of the branch line 3 and the outer side of the inner ring 7. The outer ring 8 is fitted on the outer portion. Thus, the inner ring 7 and the outer ring 8 overlap and sandwich the turned-up portion of the reinforcing body 6. The outer ring 8 is called an “outer ferrule”, and is formed of a metal material such as a steel material, an aluminum alloy, or a magnesium alloy, for example.

Subsequently, as shown in FIG. 8, the tip end portion of the branch line 3 is inserted into the opening of the small diameter portion 32 b of the body 32 of the second member 30. Thereafter, the waterproof cap 34 is fitted on the small diameter portion 32 b of the body 32. Accordingly, the corrugated protrusion (not shown) formed on the inner periphery of the waterproof cap 34 is formed on the outer periphery of the small-diameter portion 32b of the body 32. By doing so, the reinforcing body 6 is connected to the inner ring 7 and the outer Since the ring 8 and the body 32 and the waterproof cap 34 are firmly sandwiched, the joint portion between the reinforcing body 6 and the second member 30 has a load-bearing capability sufficient to support the weight of the lamp 1. As a result, the coupling strength between the branch line 3 and the second member 30 is increased.

  As described above, in the embodiment to which the present invention is applied, the mechanical strength of the branch line 3 itself is increased as much as possible, the coupling strength between the first member 20 and the second member 30 and the branch line. 3 and the second member 30 are each increased in strength as much as possible.

  Thereby, even if the weight of the said lamp 1 acts on the connector 4 and the branch line 3 by the chance that the lamp 1 remove | deviates from the wall part 5, the 1st member 20 and the 2nd member 30 which comprise the connector 4 Thus, the lamp 1 is supported by being suspended from the branch line 3.

  As a result, even if the lamp 1 is removed from the wall 5, the lamp 1 can be prevented from falling on the ground, and the lamp 1 remains lit when the lamp 1 is lit. It becomes possible to keep the state.

  Incidentally, with respect to the installation location of the lamp 1 described above, for example, as shown in FIGS. 9 and 10, the wall portion 5 can be an inner wall portion in the tunnel 42 of the road 41. In this case, even if the lamp 1 is dropped from the wall portion 5, the lamp 1 is suspended from the branch line 3 and can be prevented from falling on the road 41.

  In addition, this invention is not limited only to the said embodiment, It can change suitably in the range equivalent to the claim and the said range.

  For example, the configuration of the first and second members 20 and 30 described in the above embodiment is not particularly limited, and various types can be used although not shown.

  The present invention can be suitably used for a structure in which the lamp 1 installed on the wall 5 is connected to a power cable laid on the wall 5 via a connector 4.

1 lamp
1a Lamp case
1b Wiring of lamp
2 Power cable trunk
3 Branch line of power cable
3a Outer skin of branch line
3b Internal wiring of branch line
4 Connector
5 walls
6 Reinforcing body
7 Inner ring
8 outer ring 20 first member 21 male terminal 22 body 30 second member 31 female terminal 32 body

Claims (1)

A structure in which a lamp installed on a wall is connected to a power cable laid on the wall via a connector,
The connector includes a first member having a male terminal and a second member having a female terminal electrically connected to the male terminal as a pair and fastening for coupling the first member and the second member to each other It is a configuration where the parts are distributed and provided,
One of the first and second members is attached to the lamp, and the other is attached to the power cable,
The both members and the fastening portion are formed of a material having a load bearing capacity sufficient to support the weight of the lamp,
Between the outer sheath of the power cable and the internal wiring, a reinforcing body set to have a load bearing capacity sufficient to support the weight of the lamp is provided,
This reinforcing body is a tube in which a wire is knitted in a mesh shape, and protrudes outward from the outer skin of the power cable and is turned over so as to cover the outer diameter side of the outer skin,
The member to which the power cable is to be attached is fitted and mounted on the inner diameter side of the turned-back portion between the outer skin and the reinforcing body and on the outer diameter side of the turned-up portion. An outer ring, a cylindrical body that is fitted and fitted to the outer diameter side of the outer ring, a waterproof cap that is fitted and fitted to the outer diameter side of the body, and an axially outer side of the waterproof cap in the body A lock cap that is externally mounted on the outer diameter side of the portion that protrudes to the axial direction and in the circumferential direction, and an inner diameter side of the portion that protrudes outward in the axial direction from the waterproof cap in the body A cylindrical housing fitted and fixed to
The member to which the lamp is attached includes a cylindrical body having an outer diameter surface inserted in a non-contact manner into the inner diameter surface of the lock cap and an inner diameter surface into which the outer diameter surface of the housing is fitted,
The reinforcing cap, the inner ring, the outer skin, and the turned-up portion are connected to the internal wiring of the power cable by crimping the waterproof cap radially inward to the body of the member to which the power cable is to be attached. And the outer ring are overlapped in the radial direction and sandwiched,
The fastening portion includes a protrusion provided on an inner diameter surface of the lock cap, and a lock groove provided on an outer diameter surface of the body of a member to which the lamp is attached so that the protrusion can be engaged and disengaged. And the lock cap is fitted from the axial direction to the outer diameter side of the body of the member to which the lamp is to be attached, so that the projection enters the back of the lock groove. A lamp installation structure characterized in that the lock cap is rotated in a predetermined direction by a predetermined angle so that the protrusion is engaged with the interior of the lock groove.

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