JP2010182431A - Illumination unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination unit having a pressure-contact terminal capable of standing a heavy load by pressure welding of a wire. <P>SOLUTION: The illumination unit 1 is equipped with a housing 2 holding a bulb and a plurality of busbars 5 attached to the housing 2 for connecting the bulb and the wire 10. The busbar 5 is composed of an electrode-connecting part 41 arranged in the housing 2 to be connected to electrodes of the bulb, and a wire-connecting part 51 provided with a pair of pressure-welding terminals 53 equipped with a pair of pressure-contact pieces 54, 56 having pressure-contact edges 57, 58 arranged at an interval between each other for pressure-welding the wire 10 as the latter 10 is press-fit between them, and a coupling strip 55 coupling the pair of pressure-contact pieces 54, 56. Each pressure-welding terminal 53 is provided with an extended part 60 connected to at least either pressure-contact edge 57, 58 and stretched in a separating direction from the pressure-contact edge 58. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting unit that is attached to, for example, a roof trim of an automobile as a vehicle and illuminates a passenger compartment of the automobile.

  An automobile as a vehicle is provided with an indoor lighting device having a light emitter such as a bulb for lighting on the ceiling of the passenger compartment.

  The lighting unit as the indoor lighting device described above includes a housing that accommodates a bulb, and a bus bar that is assembled to the housing and connects the bulb and the electric wire. (For example, refer to Patent Document 1).

  As shown in FIGS. 7 and 8, the lighting unit includes a pair of electrodes composed of a positive electrode and a negative electrode of a bulb connected to the electrode connecting portion 106 of the bus bar 100, and an electric wire 200 for supplying the electrode to the bulb. The wire connection portion 102 connected to the electrode connection portion 106 is connected.

  The electric wire connecting portion 102 is connected to one end portion in the longitudinal direction of the electrode connecting portion 106 and extends from the strip-like bottom wall 103 extending along the longitudinal direction, and both end portions in the width direction of the bottom wall 103. A pair of press contact terminals 104. The wire connection part 102 is obtained by punching or bending a conductive metal plate made of copper or a copper alloy (including brass, beryllium copper, etc.). The pair of press contact terminals 104 are erected from both edges in the longitudinal direction of the bottom wall 103 toward one surface of the bottom wall 103. The press contact terminal 104 includes a pair of press contact pieces 105 and a connecting piece for connecting the press contact pieces 105. In the electric wire connecting portion 102 having such a configuration, the electric wire 200 is press-fitted between the pair of press contact pieces 105, whereby the pair of press contact pieces 105 breaks through the insulating coating 202 of the electric wire 200 and the core wire 201 is connected to the pair of press contact pieces 105. The core wire 201 is electrically connected.

JP 2005-32983 A

  However, the lighting unit 101 including the above-described press contact terminal 104 has the following problems. That is, the press contact terminal 104 is erected from both longitudinal edges of the bottom wall 103 toward one surface of the bottom wall 103. For this reason, when an external force is applied in the longitudinal direction of the electric wire 200, such as by being pulled in the longitudinal direction of the electric wire 200, the load terminal cannot withstand this load, and the press contact terminal 104 falls in the width direction of the bottom wall 103, There has been a problem that the press contact terminal 104 opens in the longitudinal direction of the bottom wall 103.

  Accordingly, the present invention pays attention to the above-described problems, and an object thereof is to provide an illumination unit 101 including a press contact terminal 104 that can withstand a high load due to the press contact of the electric wire 200.

The lighting unit according to claim 1, which has been made to solve the above-described problem, is a lighting unit including a housing that accommodates a bulb, and a plurality of bus bars that are assembled to the housing and connect the bulb and the electric wire. The bus bar is disposed in the housing and is connected to an electrode connection portion that is connected to the electrode of the valve, and is spaced apart from each other, and the electric wire is press-fitted between each other to press-contact the electric wire A pair of press contact pieces provided with blades, and a connecting piece for connecting the pair of press contact pieces, and an electric wire connection portion provided with a pair of press contact terminals,
The pressure contact terminal is provided with an extending portion that is continuous with at least one of the pressure contact blades and extends in a direction away from the pressure contact blade.

  The illumination unit according to claim 2 is the illumination unit according to claim 1, wherein the press contact terminal is arranged such that the connecting piece is bent and the pair of press contact pieces intersect each other. Yes.

  The illumination unit according to claim 3 is the illumination unit according to claim 1 or claim 2, wherein the pair of press contact terminals are arranged so that the pair of press contact pieces are moved away from each other in the longitudinal direction of the electric wire. It is characterized by being arranged in a direction approaching each other.

  As described above, according to the first aspect of the present invention, the press contact terminal is provided with the extending portion extending in the direction away from the press contact blade of the press contact piece. The extending portion is press-fitted into a press-contact terminal through hole provided in the housing. Therefore, when an external force is applied in the longitudinal direction of the electric wire, such as when the electric wire assembled to the press-contacting terminal is pulled in the longitudinal direction of the electric wire, the extending portion abuts on the inner surface of the through-contact terminal through hole, It is possible to provide a lighting unit capable of preventing the press contact terminal from falling down.

  According to a second aspect of the present invention, the press contact terminal is arranged such that the connecting piece is bent and the pair of press contact pieces intersect each other. Therefore, when an external force is applied in the longitudinal direction of the electric wire, for example, the electric wire assembled by being pressed between the pair of press contact blades is pulled in one direction in which the pair of press contact pieces in the longitudinal direction of the electric wire is separated from each other. Can apply a force in one direction in which a pair of press contact pieces arranged in a direction crossing each other is separated from each other, and therefore, it is possible to provide an illumination unit capable of preventing the press contact terminal from falling down.

  According to the third aspect of the present invention, the pair of press contact terminals are arranged in a direction in which the pair of press contact pieces approach each other as they go away from each other in the longitudinal direction of the electric wire. Therefore, even if the electric wire press-fitted and assembled between the pair of press contact blades is pulled in any direction in the longitudinal direction of the electric wire, the pair of press contact pieces arranged in the direction intersecting each other exerts a force in the direction away from each other. Therefore, the press contact terminal can be prevented from falling. In other words, it is possible to provide an illumination unit capable of preventing the press contact terminal from falling over in both directions in the longitudinal direction of the electric wire.

It is a perspective view of the illumination unit which concerns on one Embodiment of this invention. It is a perspective view which shows the bus bar of the illumination unit shown by FIG. It is a top view which shows the bus bar equivalent board which comprises the bus bar shown by FIG. (A) It is a perspective view which expands and shows the electric wire connection part shown by FIG. (B) It is a top view which shows the electric wire connection part equivalent board which comprises the electric wire connection part shown by (a). (A) It is a top view which expands and shows the electric wire connection part shown by FIG. (B) It is the side view which looked at the electric wire connection part shown by (a) from the arrow X direction. (C) It is the side view which looked at the electric wire connection part shown by (a) from the arrow Y direction. It is explanatory drawing for demonstrating the assembly operation of the illumination unit shown by FIG. 1, and is a figure which shows a mode that an electric wire is press-fit in a press-contact terminal. It is a perspective view of the conventional illumination unit. It is explanatory drawing for demonstrating the assembly operation of the illumination unit shown by FIG. 7, and is a figure which shows a mode that an electric wire is press-fit in an electric wire connection part.

  An illumination unit 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. The lighting unit 1 in one embodiment of the present invention constitutes an indoor lighting device that is attached to a roof trim, a door trim, or the like that is disposed on the surface of a passenger compartment of an automobile as a vehicle. The indoor lighting device includes a design part (not shown) and the lighting unit 1.

  The design portion is made of a transparent or translucent synthetic resin and is formed in a flat plate shape. It is exposed in the passenger compartment and can be attached to a roof trim or door trim.

  The lighting unit 1 includes a bulb (not shown) for irradiating the passenger compartment, a housing 2 for housing the bulb, a pair of bus bars 5 assembled to the housing 2, a switch (not shown), and the like. FIG. 1 shows a state where the valve is not attached to the housing 2.

  The lighting unit 1 is supplied with electric power to the bulb through the conductive bus bar 5 attached to the electric wire 10 and supplied with electric power, so that the bulb irradiates light toward the passenger compartment, and the passenger Illuminate the room.

  The bulb is a well-known wedge bulb having a light emitting unit for irradiating light and a pair of electrodes (not shown) composed of a positive electrode and a negative electrode. In the present invention, an LED wedge bulb can be used instead of the wedge bulb. The valve is mounted on a later-described valve mounting portion 28 provided at one end 2a in the longitudinal direction (indicated by arrow N in FIG. 1) of the housing 2 located in front of FIG.

  The electric wire 10 is a so-called covered electric wire 10 in which a conductive core wire (not shown) is covered with an insulating covering portion (not shown). The electric wire 10 is a round electric wire having a round cross section. The lighting unit 1 uses two electric wires 10. One electric wire 10 is connected to a positive electrode of a power source such as a battery mounted on the vehicle body described above. The other electric wire 10 is connected to the negative electrode of the power source.

  The housing 2 is made of an insulating synthetic resin and has a rectangular outer shape. The housing 2 includes a main body portion 21 in which a valve is assembled and which houses a pair of bus bars 5 described later, a cover portion 22 attached to the main body portion 21 to sandwich the electric wire 10, and the main body portion 21 and the cover portion 22. And hinge portions 23 connected to each other.

  The main body portion 21 is formed to have the same dimension in the width direction and the longitudinal direction of the cover portion 22. When the cover part 22 is attached to the main body part 21, the ceiling surface 21 a exposed from the ceiling wall of the main body part 21 and the outer surface 22 a exposed from the bottom wall of the cover part 22 are arranged flush with each other.

  The main body portion 21 includes an electrode housing portion 24 in which an electrode connection portion 41 of the bus bar 5 described later is disposed, and an electric wire pressure contact portion 25 in which an electric wire connection portion 51 of the bus bar 5 described later is disposed.

  The electrode accommodating portion 24 is equipped with the above-described valve. The electrode accommodating portion 24 is provided near the one end portion 2a. The dimension of the electrode housing part 24 in the width direction is shorter than the dimension of the main body part 21 in the width direction. The electrode housing portion 24 is provided with a valve mounting portion 28 at the tip thereof.

  The valve mounting portion 28 is provided at the distal end portion near the one end portion 2a. The valve mounting portion 28 is formed in a cylindrical shape that opens toward the tip portion. Valve electrodes are passed through the valve mounting portion 28.

  The wire pressure contact portion 25 includes a wire holding portion 29 in which a pressure contact terminal 53 of a wire connection portion 51 of the bus bar 5 described later is disposed, and a pair of wire bending portions 30 that sandwich the wire holding portion 29 therebetween. ing. One end of the electric wire pressure contact portion 25 is connected to the end portion away from the one end portion 2a of the electrode accommodating portion 24 described above. The other end portion of the electric wire pressure contact portion 25 is connected to a hinge portion 23 described later. The electric wire pressure contact portion 25 is provided at a substantially central portion of the main body portion 21. When the cover part 22 is attached to the main body part 21, the electric wire pressure contact part 25 is formed in a recess that accommodates the cover part 22. The electric wire pressure contact part 25 is provided in a concave shape from the ceiling surface 21 a of the main body part 21, and extends linearly along the width direction of the main body part 21. The electric wire pressure contact portion 25 extends the electric wire 10 in the width direction of the main body portion 21.

  The electric wire holding part 29 is provided in a recessed manner from the ceiling surface 21 a of the main body part 21. The electric wire holding part 29 is provided in the central part of the electric wire pressure contact part 25. When the cover portion 22 is attached to the main body portion 21, the electric wire holding portion 29 is provided at a position facing the electric wire housing portion 26 described later of the cover portion 22 described later. The electric wire holding portion 29 has two press contact terminal passage portions 45a and 45b for attaching a pair of press contact terminals 53 to be described later, and two bus bar mounting holes (on the bottom surface 29a provided concavely from the ceiling surface 21a of the main body portion 21. (Not shown).

  Each of the press contact terminal through portions 45a and 45b is provided with a pair of press contact terminal through holes 47. The press-contact terminal passing portion 45 a is provided at one end portion in the width direction of the electric wire holding portion 29, that is, at an end portion away from the one end portion 2 a of the housing 2. The press-contact terminal passing portion 45 a is provided at one end portion in the longitudinal direction of the electric wire holding portion 29. The press-contact terminal passing portion 45 b is provided at the other end portion in the width direction of the electric wire holding portion 29, that is, the end portion approaching the one end portion 2 a of the housing 2. The press contact terminal passing portion 45 a is provided at the other end portion in the longitudinal direction of the electric wire holding portion 29. As described above, the two press-contact terminal passing portions 45a and 45b are arranged so as to be shifted from each other along the width direction of the wire holding portion 29, that is, the longitudinal direction of the housing 2 (arrow N in FIG. 1).

  The press-connecting terminal through-hole 47 is further provided in a recess on the bottom surface 29 a of the wire holding part 29 provided in a recess from the ceiling surface 21 a of the main body 21. The press-contact terminal through-hole 47 passes an extending portion 60 of the press-contact terminal 53 described later. The press contact terminal through-hole 47 has a rectangular planar shape. The pair of press contact terminal through holes 47 has one end of the press contact terminal through hole 47 arranged closer to the one end 2a approaching each other, and the other end of the press contact terminal through hole 47 as it is away from the one end 2a. They are arranged in a generally C shape with the gap between them gradually increasing. The press-connecting terminal through-hole 47 is provided with a lock hole portion (not shown) that engages with a convex lock portion 61 provided on the surface of an extension portion 60 described later. The lock hole portion is provided in a concave shape from the inner surface approaching the one end portion 2 a of the press contact terminal through hole 47.

  The bus bar mounting hole is further provided in a concave shape on the bottom surface 29 a of the electric wire holding portion 29 provided in a concave shape from the ceiling surface 21 a of the main body portion 21. The bus bar mounting hole passes through a housing mounting portion 71 described later. The bus bar mounting hole has a rectangular planar shape. Both ends of the bus bar mounting hole are arranged close to the other end of each of the pair of press contact terminal through holes 47 described above.

  The pair of electric wire bending portions 30 are provided at both ends of the electric wire pressure contact portion 25 in the longitudinal direction. The electric wire bending portion 30 is provided in a concave shape from the ceiling surface 21 a of the main body portion 21. The electric wire bending portion 30 is provided at a position farther from the ceiling surface 21 a of the main body portion 21 than the electric wire holding portion 29 described above. When the cover part 22 is attached to the main body part 21, the electric wire bending part 30 is provided at a position facing the electric wire pressing part 27 of the cover part 22 described later. When the cover portion 22 is attached to the main body portion 21 with the electric wire 10 extending to the electric wire pressure contact portion 25, the electric wire bending portion 30 presses the electric wire 10 and the electric wire 10 It is bent and attached to the main body 21. The electric wire bending portion 30 is provided with a pair of lock receiving portions 33 for attaching the cover portion 22 to the main body portion 21.

  The pair of lock receiving portions 33 is provided on each of the pair of inner wall surfaces that are continuous with the edge in the width direction of the wire pressure contact portion 25. The pair of inner wall surfaces are arranged to face each other with a space therebetween. The lock receiving portion 33 is provided with two holes 34a and 34b provided in a recessed manner on the inner wall surface described above. The hole 34a is arranged at a position approaching the ceiling surface 21a of the inner wall surface. And the hole part 34b is distribute | arranged to the position away from the ceiling surface 21a of an inner wall surface. The two holes 34a and 34b are spaced apart from each other.

  The hole 34a is formed by cutting the ceiling surface 21a and the inner wall surface into a concave shape. And the hole part 34a inclines in the direction which approaches an inner wall surface gradually as it leaves | separates from the ceiling surface 21a of an inner wall surface.

  The hole 34b has a notched inner wall surface.

  When the cover portion 22 is attached to the main body portion 21, the cover portion 22 includes an electric wire housing portion 26 provided at a position opposite to the electric wire pressure contact portion 25, and a pair of electric wire pressing portions 27 that sandwich the electric wire housing portion 26 therebetween. I have. The cover part 22 is connected to the main body part 21 via a hinge part 23 described later.

  When the cover part 22 is attached to the main body part 21, the electric wire housing part 26 has an inner surface 22b opposite to the outer surface 22a of the bottom wall of the cover part 22 that is arranged flush with the ceiling surface 21a of the main body part 21. Thus, a plurality of partition walls 35 a, 35 b, 35 c formed in a convex manner and a wall portion 36 standing from one edge in the width direction away from the hinge portion 23 of the wire accommodating portion 26 are provided. A hinge portion 23 to be described later is connected to the other edge in the width direction of the electric wire housing portion 26. Further, the bottom wall of the electric wire housing part 26 is formed to have a larger dimension in the width direction than the bottom wall of the cover part 22.

  In the illustrated example, three partition walls 35a, 35b, and 35c are provided. Protrusions are provided along the longitudinal direction of the electric wire housing portion 26. The three partition walls 35a, 35b, and 35c extend in parallel with each other in a straight line.

  Of the three partition walls 35a, 35b, and 35c, the partition wall 35a that is disposed closest to the hinge portion 23 is configured such that when the cover portion 22 is attached to the main body portion 21, the distal end portions of the press contact blades 57 and 58 of the press contact terminal 53 described later are provided. A notch 49a is provided at the abutting position. Two notches 49 a are provided corresponding to the pair of press contact terminals 53. That is, the notch 49a is provided at a position corresponding to a press contact terminal through hole 45a through which an extension portion 60 of the press contact terminal 53 described later passes. The two notches 49a cut out the partition wall 35a over the entire length in the width direction of the partition wall 35a. The two notches 49a are provided at a distance from each other. When the cover portion 22 is attached to the main body portion 21, the protruding partition wall 35 a presses the electric wire 10 toward the bottom surface 29 a of the electric wire holding portion 29.

  Of the three partition walls 35a, 35b, and 35c, the partition wall 35c that is disposed farthest from the hinge portion 23 is the tip of the press contact blades 57 and 58 of the press contact terminal 53 described later when the cover portion 22 is attached to the main body portion 21. A notch 49b is provided at a position where the abuts. Two notches 49 b are provided corresponding to the pair of press contact terminals 53. That is, the notch 49b is provided at a position corresponding to a press contact terminal through hole 45b through which an extension portion 60 of the press contact terminal 53 described later passes. The two notches 49b cut out the partition wall 35c over the entire length in the width direction of the partition wall 35c. The two notches 49b are provided with a space therebetween. When the cover portion 22 is attached to the main body portion 21, the protruding partition wall 35 c presses the electric wire 10 toward the bottom surface 29 a of the electric wire holding portion 29.

  The wire pressing portion 27 is provided at a position facing the wire bending portion 30 when the cover portion 22 is attached to the main body portion 21. The electric wire pressing part 27 presses the electric wire 10 toward the electric wire bending part 30 when the cover part 22 is attached to the main body part 21 in a state where the electric wire 10 is extended to the electric wire pressure contact part 25.

  The electric wire pressing portion 27 includes, on the inner surface 22b of the bottom wall, a first side plate portion 37 erected from edges of both end portions in the longitudinal direction of the cover portion 22, and a second side plate portion 38 that faces the first side plate portion 37. And a connection wall 39 that connects the first side plate portion 37 and the second side plate portion 38 to each other, and a member that is disposed at both ends of the connection wall 39 and engages with the lock receiving portion 33 of the wire bending portion 30 described above. A locking part 40.

  The first side plate portion 37 is provided over the entire length of the cover portion 22 in the width direction. And the connection wall 39 mentioned later is continued in the surface near the electric wire accommodating part 26 of the 1st side board part 37. As shown in FIG.

  The second side plate portion 38 is provided over the entire length of the cover portion 22 in the width direction. The second side plate portion 38 is disposed closer to the electric wire housing portion 26 than the first side plate portion 37. A connecting wall 39 is connected to the surface of the second side plate portion 38 away from the wire accommodating portion 26. Both ends of the partition walls 35a, 35b, and 35c described above are connected to the surface of the second side plate portion 38 near the wire housing portion 26.

  The connecting wall 39 is erected from the inner surface 22b of the bottom wall. The connecting wall 39 is arranged in a direction orthogonal to the first side plate portion 37 and the second side plate portion 38. The connecting wall 39 continues to the longitudinal center of the first side plate portion 37 and the second side plate portion 38.

  A pair of locking lock portions 40 are provided. The locking portion 40 is erected from the inner surface 22b of the bottom wall. The locking lock portion 40 is provided at both ends of the cover portion 22 in the width direction. The locking lock portion 40 includes a plate portion 45 erected from the edge of the cover portion 22 in the width direction, and a protrusion 46 provided at the tip portion of the plate portion 45.

  The protrusion 46 is provided at the tip of the plate portion 45 described above so as to protrude outward in the longitudinal direction of the wire pressing portion 27, that is, in the width direction of the cover portion 22.

  The hinge part 23 is provided so that it can bend. The hinge part 23 is formed integrally with the main body part 21 and the cover part 22. One end of the hinge part 23 is connected to the end part away from the one end part 2 a of the wire pressure contact part 25 of the main body part 21, and the other end is connected to the end part of the cover part 22 approaching the main body part 21. ing.

  The lighting unit 1 uses a pair of bus bars 5 as described above. One bus bar 5 has one electric wire 10 attached thereto and is connected to a positive electrode of a power source such as a battery mounted on the vehicle body described above. The other bus bar 5 is connected to the negative electrode of the power source with the other electric wire 10 attached thereto.

  The pair of bus bars 5 is formed by bending a bus bar equivalent plate 5 ′ shown in FIG. 3 obtained by punching a conductive metal plate. As shown in FIG. 2 and the like, the bus bar 5 includes an electrode connection portion 41 that is connected to the electrode of the valve and a wire connection portion 51 that is connected to the electric wire 10. The bus bar equivalent plate 5 ′ includes an electrode connection portion equivalent portion 41 ′ corresponding to the electrode connection portion 41, a wire connection portion equivalent portion 51 ′ corresponding to the wire connection portion 51, and a housing attachment corresponding to the housing attachment portion 71. Part equivalent part 71 '.

  The electrode connection portion 41 is formed by bending the electrode connection portion equivalent portion 41 ′ of the bus bar equivalent plate 5 ′. The electrode connecting portion 41 includes a pair of strip-shaped electrode sandwiching pieces 42 opposed to each other with a space therebetween, and a connecting portion 43 connected to one end in the longitudinal direction of the pair of electrode sandwiching pieces 42. The pair of electrode holding pieces 42 are convexly curved in a direction approaching each other, and the valve is inserted between them, and the electrode holding piece 42 and one of the positive electrode and the negative electrode are electrically connected. Connected. Further, 42 ′ shown in FIG. 3 is an electrode holding piece equivalent portion corresponding to the electrode holding piece 42, and 43 ′ is a connection portion equivalent portion corresponding to the connection portion 43.

  Then, a connecting portion (indicated by R1 in FIG. 3) between the connecting portion corresponding portion 43 ′ and a bottom plate corresponding portion 52 ′ described later is bent at a right angle, whereby the pair of electrode holding pieces 42 and the pair of electrodes The electrode connecting portion 41 includes a connecting portion 43 that connects the holding piece 42.

  The wire connection portion 51 is formed by bending the wire connection portion equivalent portion 51 ′ of the bus bar equivalent plate 5 ′. The wire connection portion equivalent portion 51 ′ is connected to the connection portion equivalent portion 43 ′ of the electrode connection portion equivalent portion 41 ′, that is, the longitudinal direction of the electrode connection portion equivalent portion 41 ′ (indicated by an arrow N in FIG. 3). A bottom plate equivalent portion 52 ′ connected to one end of the bottom plate, and a pair of press contact terminal equivalent portions 53 ′ each extending in a direction intersecting the longitudinal direction of the bottom plate equivalent portion 52 ′ from the edge in the width direction of the bottom plate equivalent portion 52 ′. It is equipped with.

  Of the pair of bus bar equivalent parts 5 ′, the bottom plate equivalent part 52 ′ of one bus bar equivalent part 5 ′ has a longer dimension in the longitudinal direction than the bottom plate equivalent part 52 ′ of the other bus bar equivalent part 5 ′. Is formed. Thus, when the bus bar 5 is assembled to the housing 2, the bus bars 5 are arranged to be shifted from each other in the longitudinal direction of the housing 2. The two electric wires 10 are arranged so as to be shifted from each other in the longitudinal direction of the housing 2 and are assembled to each of the pair of bus bars 5.

  The pair of press contact terminal equivalent portions 53 ′ are arranged symmetrically (line symmetric) with respect to the bottom plate equivalent portion 52 ′. The press contact terminal equivalent portion 53 ′ is arranged with a first press contact piece equivalent portion 54 ′ connected to the edge in the width direction of the bottom plate equivalent portion 52 ′ and the first press contact piece equivalent portion 54 ′ spaced apart from each other. 2 pressure contact piece equivalent part 56 'and the connection piece equivalent part 55' which mutually connects pressure contact piece equivalent part 54 ', 56' mentioned above are provided.

  The first pressure contact piece equivalent portion 54 ′ is a pressure contact blade equivalent portion 57 ′ in which the electric wire 10 is press-fitted between the pressure contact blade equivalent portion 58 ′ of the second pressure contact piece equivalent portion 56 ′, which will be described later, A connecting portion corresponding portion 59 ′ extending in a direction away from the tip portion of the press contact blade corresponding portion 57 ′ and continuing to the edge in the width direction of the bottom plate corresponding portion 52 ′ described above is provided. The connecting portion equivalent portion 59 ′ is formed in a substantially triangular shape and is continuous from the edge in the width direction of the bottom plate equivalent portion 52 ′ in a direction intersecting with the longitudinal direction of the bottom plate equivalent portion 52 ′.

  The aforementioned pressure contact blade equivalent portion 57 ′ of the first pressure contact piece equivalent portion 54 ′ and the pressure contact blade equivalent portion 58 ′ of the second pressure contact piece equivalent portion 56 ′ described later are provided in a straight line with each other, and They are arranged in parallel.

  The second pressure contact piece corresponding portion 56 'is connected to the first pressure contact piece corresponding portion 54' via a connecting piece corresponding portion 55 'to be described later. The second pressure contact piece equivalent portion 56 ′ is a pressure contact blade equivalent portion 58 ′ in which the electric wire 10 is press-fitted between the first pressure contact piece equivalent portion 54 ′ and the pressure contact blade equivalent portion 57 ′ to press the electric wire 10. And an extending portion corresponding portion 60 ′ that extends in a direction away from the tip portion of the press contact blade corresponding portion 58 ′ and is press-fitted into the press contact terminal through hole 47 of the housing 2 described above.

  Then, after the connection portion (indicated by R2 in FIG. 3) between the connection portion equivalent portion 59 ′ and the press contact blade equivalent portion 57 ′ described later is bent at a right angle, the above-described connection piece equivalent portion 55 ′ is bent. Thus, the pair of press contact piece equivalent parts 54 ′ and 56 ′ are arranged in a direction crossing each other, whereby the wire connection part equivalent part 51 ′ includes a bottom plate 52 and a pair of press contact terminals 53 shown in FIG. It becomes the electric wire connection part 51.

  The aforementioned pressure contact terminals 53 are arranged orthogonal to the aforementioned bottom plate 52 as shown in FIG. The press contact terminal 53 includes a first press contact piece 54 connected to the bottom plate 52, a second press contact piece 56, and a connecting piece 55 that connects the press contact pieces 54, 56 to each other. In the press contact terminal 53, the connecting piece 55 is bent, and the press contact pieces 54 and 56 are arranged in a direction crossing each other. The pressure contact pieces 54 and 56 correspond to “a pair of pressure contact pieces” recited in the claims.

  The first pressure contact piece 54 described above includes a pressure contact blade 57 and a connection portion 59 connected to the pressure contact blade 57 and the bottom plate 52. Of course, the press contact blade 57 of the first press contact piece 54 is arranged orthogonal to the bottom plate 52. The second pressure contact piece 56 described above includes a pressure contact blade 58 and an extending portion 60 that continues in a direction away from the tip of the pressure contact blade 58. Of course, the second press-contacting piece 56 is arranged orthogonal to the bottom plate 52. The press contact blade 58 is provided so as to stand toward one surface of the bottom plate 52, and the extending portion 60 is provided so as to stand toward the other surface of the bottom plate 52. The extending portion 60 is press-fitted into the aforementioned pressure contact terminal through hole 47. The pressure contact blade 58 corresponds to a “pressure contact blade” recited in the claims.

  Further, when the extended portion 60 is arranged in a direction in which the pair of press contact pieces 54 and 56 intersect with each other, a convex lock portion 61 is provided on the outer surface of one press contact blade 58. The lock portion 61 engages with a lock hole portion provided inside the aforementioned pressure contact terminal through hole 47.

  The pair of press contact terminals 53 are disposed to face each other, and are disposed in a direction in which the pair of press contact pieces 54 and 56 approach each other in a direction away from each other in the longitudinal direction of the electric wire 10. The electric wire connecting portion 51 including the pair of press contact terminals 53 is electrically connected to the core wire through the core wire of the electric wire 10 by press-fitting the electric wire 10 by press-fitting the electric wire 10 between the pair of press contact blades 57 and 58. Connect to.

  The housing mounting portion 71 is connected to the bottom plate equivalent portion 52 ′ of the bus bar equivalent plate 5 ′ at the connecting portion of the housing mounting portion 71 ′ and the bottom plate equivalent portion 52 ′. It is formed by being bent at a right angle toward the direction approaching the surface. The housing attachment portion 71 is disposed orthogonal to the bottom plate 52 and is provided to protrude from the other surface side of the bottom plate 52. The housing attachment portion 71 is inserted into the bus bar attachment hole described above.

  Note that the bus bar equivalent plate 5 ′ described above is lumped together in a fashion that is arranged in parallel along the width direction of the other bus bar equivalent plate 5 ′ and the electrode connection portion equivalent portion 41 ′ as shown in FIG. The The plurality of bus bar equivalent plates 5 ′ (two in the illustrated example) are connected to each other by a bridge 11. The bridge 11 is cut when the bus bar equivalent plate 5 ′ is formed on the bus bar 5 which is a molded product by bending or the like.

  Then, the assembly method of the illumination unit 1 mentioned above is demonstrated. Such a pair of bus bars 5 are assembled to the housing 2 so as to be aligned with each other along the width direction of the bottom plate 52, and are shifted from each other in the longitudinal direction of the housing 2 (indicated by an arrow N in FIG. 1). Is done. At this time, the electrode connection portion 41 is disposed in the electrode housing portion 24 of the housing 2, and the wire connection portion 51 is disposed in the wire housing portion 26 of the housing 2.

  Then, the extension part 60 is press-fitted into the press-contact terminal through hole 47 of the electric wire housing part 26, and the housing attachment part 71 is inserted into the bus bar attachment hole. Then, the lock portion 61 of the extending portion 60 is locked in the lock hole portion provided on the inner surface of the press contact terminal through hole 47. In this way, the bus bar 5 is attached to the housing 2.

  Next, the two electric wires 10 are extended along the longitudinal direction of the electric wire accommodating part 26. Then, as shown in FIG. 6, the electric wire 10 is connected to a pair of press contact terminals 53. First, the electric wire 10 is press-fitted between the pair of press contact blades 57 and 58 of one press contact terminal 53 out of the pair of press contact terminals 53. Then, the electric wire 10 is press-fitted between the pair of press contact terminals 53 and the pair of press contact blades 57 and 58 of the other press contact terminal 53. In this way, the press contact pieces 54 and 56 break through the covering portion of the electric wire 10 and the press contact terminal 53, that is, the bus bar 5 and the electric wire 10 are electrically connected.

  Next, the inner surface 22 b of the cover part 22 is brought close to the ceiling surface 21 a of the main body part 21. At this time, the distal end portions of the first press contact piece 54 and the second press contact piece 56 of the press contact terminal 53 abut against the notches 49 a and 49 b of the partition walls 35 a and 35 c of the cover portion 22. Then, after the protrusion 46 of the locking lock portion 40 of the cover portion 22 is passed through the hole 34a and the locking lock portion 40 is elastically deformed inward of the cover portion 22, the protrusion 46 is positioned in the hole portion 34b. Then, the locking lock part 40 returns to a neutral state by an elastic restoring force. Then, the locking lock portion 40 of the cover portion 22 is locked to the lock receiving portion 33 of the electric wire bending portion 30. Thus, the cover portion 22 is attached to the main body portion 21 and the two electric wires 10 are assembled to the housing 2.

  Next, after inserting the valve into the valve mounting portion 28 of the housing 2, the electrode of the valve is inserted between the pair of electrode holding pieces 42. Thus, the valve is electrically connected to the bus bar 5 and is assembled to the housing 2. Thus, the lighting unit 1 is completed. Then, when a switch (not shown) electrically connected to the pair of bus bars 5 is turned on / off, the bulb is turned on or off.

  According to the embodiment described above, the press contact terminal 53 is provided with the extending portion 60 extending in a direction away from the press contact blade 58 of the press contact piece 56. The extending portion 60 is press-fitted into a press-contact terminal through hole 47 provided in the housing 2. Therefore, when the external force is applied in the longitudinal direction of the electric wire 10 by pulling the electric wire 10 attached to the press-contact terminal 53 in the longitudinal direction of the electric wire 10, the extending portion 60 becomes the inner surface of the press-contact terminal through-hole 47. It is possible to prevent the press contact terminal 53 from falling down by coming into contact with the contact.

  Further, the press contact terminal 53 is arranged in a direction in which the connecting piece 55 is bent and the pair of press contact pieces 54 and 56 intersect each other. Accordingly, the electric wire 10 press-fitted between the pair of press contact blades 57 and 58 is pulled in one direction in which the pair of press contact pieces 54 and 56 in the longitudinal direction of the electric wire 10 are separated from each other. When an external force is applied in the direction, the pair of press contact pieces 54 and 56 arranged in a direction crossing each other applies a force in one direction away from each other, so that the press contact terminal 53 can be prevented from falling down.

  Further, the pair of press contact terminals 53 are arranged in a direction in which the pair of press contact pieces 54 and 56 approach each other in the direction away from each other in the longitudinal direction of the electric wire 10. Therefore, even if the electric wire 10 press-fitted between the pair of press contact blades 57 and 58 is pulled in any direction in the longitudinal direction of the electric wire 10, a pair of press contact pieces 54 arranged in directions intersecting each other. 56 are applied in directions away from each other, so that the press contact terminal 53 can be prevented from falling down. That is, it is possible to prevent the press contact terminal 53 from falling with respect to the longitudinal direction of the electric wire 10.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Illumination unit 2 Housing 5 Bus bar 10 Electric wire 41 Electrode connection part 47 Pressure contact terminal through-hole 51 Wire connection part 54, 56 A pair of press contact piece 55 Connection piece 57, 58 Press contact blade 60 Extension part

Claims (3)

A housing containing the valve;
In a lighting unit comprising a plurality of bus bars assembled to the housing and connecting the bulb and the electric wire,
The bus bar is
An electrode connecting portion disposed in the housing and connected to an electrode of the valve;
A pressure contact including a pair of pressure contact pieces provided with a space between each other and a pressure contact blade that press-fits the wire when the electric wire is press-fitted between each other, and a connecting piece that connects the pair of pressure contact pieces A wire connecting portion having a pair of terminals;
With
The lighting unit is characterized in that the press contact terminal is provided with an extending portion that is continuous with at least one of the press contact blades and extends in a direction away from the press contact blade.   2. The lighting unit according to claim 1, wherein the press contact terminal is arranged such that the connection piece is bent and the pair of press contact pieces intersect each other.   3. The illumination according to claim 1, wherein the pair of press contact terminals are arranged in a direction in which the pair of press contact pieces approach each other in a direction away from each other in a longitudinal direction of the electric wire. unit.

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