JP2009274562A - Vehicle-mounted indoor lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle-mounted indoor lighting system capable of pressure contact connecting a flat electric wire to a pressure contact connection terminal without boring a punch hole on a bridge of the flat electric wire. <P>SOLUTION: In this vehicle-mounted indoor lighting system, a pressure contact connection terminal 27 stands at an electric wire arranging part, and a flat electric wire 40 is connected with the pressure contact connection terminal 27 by pressure contact. A bridge cutter 33 is installed outside the pressure contact connection terminal 27 and at a position corresponding to the bridge 42 of the flat electric wire 40, and the bridge cutter 33 is formed by a bus bar 30 together with the insulation connection terminal 27. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle interior lighting device that is provided on a ceiling or the like of a vehicle cabin and illuminates the vehicle interior.

  As this type of conventional in-vehicle indoor lighting device, there is one disclosed in Patent Document 1. This in-vehicle indoor lighting device has a design part arranged on the indoor side of a ceiling board of a vehicle compartment and a functional part arranged on the outdoor side, and is assembled by engaging them. The design part has a lens cover that transmits light to the vehicle compartment side and a switch operation part for operating the switch part.

  The functional unit 100 includes a resin housing 101 as shown in FIG. The housing 101 includes a valve housing chamber 102 for housing a valve (not shown), a switch housing chamber 103 for housing a switch portion (not shown), and a flat electric wire 120 (FIGS. 12A and 12B). Is provided). The valve storage chamber 102 is provided with a pair of valve mounting terminals 110 for mounting valves. The switch housing chamber 103 is provided with a switch terminal (not shown) for electrical connection with the switch unit. A plurality of press-contact terminals 111 for press-connecting to the flat wire 120 are erected on the wire routing unit 104. A plurality of press contact terminals 111, a valve mounting terminal 110, a switch terminal (not shown), and a wiring portion 112 for connecting these terminals with a desired wiring path are formed by a bus bar 113 formed by insert molding in the housing 101. Yes.

  As shown in detail in FIG. 11, the wire routing portion 104 is provided with a fall prevention wall 105 that prevents the respective pressure contact terminals 111 from falling. Each fall prevention wall 105 is formed integrally with the housing 101.

  On the other hand, as shown in FIGS. 12A and 12B, the flat electric wire 120 includes a plurality of electric wires 121 covered with an outer skin 121 b of a conductive wire 121 a and a plurality of bridges 122 that connect between adjacent electric wires 121. It is configured.

  Next, a pressure contact process for pressing the flat electric wire 120 to the pressure contact terminal 111 will be described. First, a punching hole 130 (shown in FIGS. 12A and 12B) is opened in the bridge 122 of the flat electric wire 120 corresponding to the fall prevention wall 105.

  Next, as shown in FIGS. 12A and 12B, the flat electric wire 120 is positioned above each press contact terminal 111, and the flat electric wire 120 is pressed in the penetration direction A of each press contact terminal 111. Then, the flat electric wire 120 is press-connected to the press contact terminal 111 by breaking the outer sheath 121b and the conductive wire 121a of each electric wire 121 that has hit the press contact terminal 111. In the pressure welding process of the flat electric wire 120, the fall prevention wall 105 passes through the punched hole 130 of the flat electric wire 120, and therefore does not hinder the pressure welding operation of the flat electric wire 120.

In this in-vehicle indoor lighting device of the conventional example, even if a pulling force is applied to the flat electric wire 120, the press contact terminal 111 is held by the fall prevention wall 105, so that the press contact terminal 111 is not inclined. Accordingly, it is possible to prevent accidents such as a short circuit and poor contact due to the inclination of the press contact terminal 111 as much as possible.
JP 2005-329883 A

  However, in the conventional vehicle interior lighting device, the punched hole 130 must be opened in the bridge 122 of the flat wire 120 in the step of pressing the flat wire 120 to the pressure contact terminal 111. Since the opening operation of the punching hole 130 requires labor and man-hours, it is troublesome. In addition to the fall prevention wall 105, when there is a member that hinders the pressure welding operation of the flat electric wire 120, it is necessary to similarly open the punching hole 130 at the position of the bridge 122 corresponding to the member.

  Accordingly, the present invention has been made to solve the above-described problems, and provides an in-vehicle indoor lighting device that can press-connect a flat wire to a press-contact terminal without opening a punched hole in the bridge of the flat wire. Objective.

  The invention according to claim 1 is an in-vehicle indoor lighting device in which a pressure contact terminal is provided in the wire routing portion, and the wire of the flat wire is connected to the pressure contact terminal by pressure contact, outside the pressure contact terminal and the flat wire A bridge cutter is provided at a position corresponding to the bridge.

  A second aspect of the present invention is the in-vehicle indoor lighting device according to the first aspect, wherein the bridge cutter is disposed in the vicinity of both outer sides of the press contact terminal.

  A third aspect of the present invention is the in-vehicle indoor lighting device according to the first or second aspect, wherein the bridge cutter is provided with a fall prevention wall for preventing the press contact terminal from falling.

  A fourth aspect of the present invention is the in-vehicle indoor lighting device according to any one of the first to third aspects, wherein the bridge cutter is formed from the same bus bar forming the press contact terminal. .

  The invention of claim 5 is the in-vehicle interior lighting device according to any one of claims 2 to 4, wherein the pair of bridge cutters arranged on both outer sides of the press contact terminal has tip portions from the inside. It is a taper surface which inclines downward toward the outside.

  According to the first aspect of the present invention, the flat electric wires are aligned above the press contact terminals, and the flat electric wires are pressed in the penetrating direction of the press contact terminals. As a result, the flat wire moves in the penetrating direction while breaking each of the wires that hit the pressure contact terminal and the bridge that hits the bridge cutter, and the flat wire is pressure connected to the pressure contact terminal. Therefore, the flat electric wire can be press-connected to the press contact terminal without opening a punched hole in the bridge of the flat electric wire. Further, in the conventional example, it is necessary to align the flat wire in the longitudinal direction so that the punched hole of the flat wire bridge passes through the fall prevention wall, but in the present invention, the position in the longitudinal direction of such a flat wire is required. Matching is not necessary. Furthermore, since the bridge cutter regulates the movement of the flat wire in the longitudinal direction, the tensile strength of the flat wire is increased.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, it is possible to prevent the press contact terminal from spreading outward due to the pressing force from the flat electric wire, and to prevent accidents such as short circuit and poor contact as much as possible.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, even if the tensile force from the flat electric wire acts on the press contact terminal, the press contact terminal is held in position by the fall prevention wall. The tensile strength of the flat wire is further improved.

  According to the invention of claim 4, in addition to the effects of the inventions of claims 1 to 3, the bridge cutter can be easily configured by changing the shape of a part of the bus bar and adding a bending process. In addition, since the bus bar is stronger than the resin material, the fall prevention wall becomes stronger.

  According to the invention of claim 5, in addition to the effects of the inventions of claims 1 to 4, in the process of pressing the flat wire to the press contact terminal, the inner fracture position by the pair of bridge cutters is the same position, The electric wire located between the pair of bridge cutters is not displaced and is pressed at an appropriate position.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 9 show an embodiment of the present invention, FIG. 1 is an exploded perspective view of a vehicle interior lighting device, FIG. 2 is a perspective view of a housing of a functional unit, and FIG. 3A is a press contact terminal and a bridge cutter. 3 (b) is a pressure contact terminal viewed from a direction different from FIG. 3 (a), a perspective view of the main part of a bridge cutter, etc., and FIG. 4 is a pressure contact terminal with a flat electric wire pressure connected. FIG. 5 is a perspective view before bending the pressure contact terminal itself, FIG. 6 is a perspective view before bending the bridge in the pressure contact terminal manufacturing process, and FIG. 7 is a pressure contact of the flat wire. FIG. 8 is a front view showing a state where the flat wire is aligned above the press contact terminal, and FIG. 9 is for explaining that the wire insertion slit of the press contact terminal does not widen. FIG.

  As shown in FIG. 1, the in-vehicle indoor lighting device 1 includes a design portion 10 disposed on the indoor side of the ceiling board 2 of the passenger compartment, and a functional portion 20 disposed on the outdoor side. An opening 3 is formed in the ceiling plate 2, and the design part 10 and the functional part 20 are assembled through the opening 3.

  The design portion 10 protrudes inward from a resin-made frame-shaped housing 11, a lens cover 12 fixed so as to cover the indoor side of the frame-shaped housing 11, and a hole 12 a of the lens cover 12. And a switch operation unit 13 provided in the. Locking claws 14 are provided at appropriate positions of the housing 11. The lens cover 12 corresponds to the opening 3 of the ceiling plate 2 and transmits the irradiation light from the functional unit 20 to the vehicle compartment side. The switch operation unit 13 corresponds to the position of the switch unit 32 described below, and the switch unit 32 can be operated by operating the switch operation unit 13.

  As shown in detail in FIG. 2, the functional unit 20 includes a resin housing 21, and a locked portion 22 is provided at an appropriate position of the housing 21. The design portion 10 and the functional portion 20 are locked by the locking claw 14 of the design portion 10 being locked to the locked portion 22. On the indoor side of the housing 21, there are a bulb accommodating chamber 23 that accommodates a bulb 31 that is a light source, a switch accommodating chamber 24 that accommodates a switch portion 32, and an electric wire routing portion 25 that connects a flat electric wire 40. The valve storage chamber 23 is provided with a pair of valve mounting terminals 26 for mounting the valve 31. A valve 31 is mounted on the pair of valve mounting terminals 26. The switch housing chamber 24 is provided with a switch terminal (not shown) for electrical connection with the switch portion 32. A pressure contact terminal 27 is erected on the wire routing section 25, and a flat wire 40 is pressure contact connected to each pressure contact terminal 27. The portion of the flat wire 40 routed in the wire routing portion 25 is covered with the wire cover 28.

  A pressure contact terminal 27, a valve mounting terminal 26, a switch terminal (not shown), and a wiring portion 29 that connects these terminals by a desired wiring path are formed by a bus bar 30 that is insert-molded in the housing 21.

  Next, a detailed configuration of the wire routing unit 25 will be described. As shown in FIG. 2, there are three sets of the press contact terminals 27, and each set of press contact terminals 27 includes a pair of press contact terminals 27 arranged at intervals. As shown in FIGS. 3A, 3 </ b> B, and 4, each pressure contact terminal 27 has an electric wire insertion slit 27 a having an upper end portion that is widened in a tapered shape. A pair of bridge cutters 33 are erected on the outside and in the vicinity of both of the pair of press contact terminals 27 of each set. Each bridge cutter 33 has substantially the same length as the interval between the two press contact terminals 27, and the pair of press contact terminals 27 and the pair of bridge cutters 33 are arranged in a rectangular frame shape. The pair of bridge cutters 33 are formed on tapered surfaces 33a whose tip portions are inclined downward from the inside toward the outside. Each bridge cutter 33 is provided with a fall prevention wall 34 that prevents the press contact terminal 27 from falling in the longitudinal direction a of the flat electric wire 40. The bridge cutter 33 and the fall prevention wall 34 are integrally formed with the press contact terminal 27 by the bus bar 30.

  As shown in detail in FIG. 4, the flat electric wire 40 is composed of three electric wires 41 in which a conductive wire 41 a is covered by an outer skin 41 b and two bridges 42 that connect adjacent electric wires 41. The outer skin 41b and the bridge 42 are formed of the same resin material. Each electric wire 41 is press-connected by being inserted into the electric wire insertion slits 27 a of the three sets of press-contact terminals 27, and a bridge cutter 33 is passed through a bridge 42 around each electric wire 41.

  Next, a procedure for manufacturing the press contact terminal 27, the bridge cutter 33, and the fall prevention wall 34 from the bus bar 30 will be described. As shown in FIG. 5, the conductive metal plate is punched to form a flat bus bar base material 50 having a desired shape. The pair of press contact terminals 27 of the bus bar base material 50 are bent in the direction of the arrow in FIG. 5 to form an upright press contact terminal 27. Next, the pair of bridge cutters 33 of the bus bar base material 50 are bent in the direction of the arrow in FIG. 6 to form a standing bridge cutter 33. Next, the fall prevention wall 34 extended from the bridge cutter 33 is bent until it comes into close contact with the press contact terminal 27 to form the fall prevention wall 34. This completes the processing.

  Next, a pressing process for pressing the flat wire 40 to the pressing terminal 27 will be described. First, as shown in FIGS. 7 and 8, the flat electric wires 40 are positioned above the three sets of press contact terminals 27, and the flat electric wires 40 are pressed in the penetration direction A of each press contact terminal 27. Then, the flat electric wire 40 is press-connected to the press contact terminal 27 by breaking the outer sheath 41 b and the conductive wire 41 a of each electric wire 41 that hits the press contact terminal 27 and the bridge 42 that hits the bridge cutter 33. Therefore, the flat electric wire 40 can be press-connected to the press contact terminal 27 without opening a punching hole in the bridge 42 of the flat electric wire 40. In the conventional example, it is necessary to align the punching hole of the bridge 42 of the flat electric wire 40 with respect to the fall prevention wall. However, in the present invention, alignment of the flat electric wire 40 in the longitudinal direction a is not necessary. Furthermore, after the flat electric wire 40 is press-connected to the press contact terminal 27, the bridge cutter 33 restricts the movement of the flat electric wire 40 in the longitudinal direction a, so that the tensile strength of the flat electric wire 40 is increased. This can lead to the abolition of the strain relief structure.

  Since the bridge cutter 33 is disposed in the vicinity of both outer sides of the press contact terminal 27, the wire insertion slit 27a of the press contact terminal 27 can be prevented from spreading outward by the pressing force F from the flat wire 40 as shown in FIG. . As a result, accidents such as short circuits and poor contact can be prevented as much as possible.

  The bridge cutter 33 is provided with a fall prevention wall 34 that prevents the press contact terminal 27 from falling. Therefore, even if a tensile force from the flat electric wire 40 acts on the pressure contact terminal 27, the pressure contact terminal 27 is held at the fall prevention wall 34, so that the tensile strength of the flat wire 40 is further improved. That is, in this embodiment, since the tensile strength of the flat electric wire 40 becomes very large by the bridge cutter 33 and the fall prevention wall 34, it greatly contributes to the abolition of the strain relief structure by the electric wire cover 28 and the like.

  The bridge cutter 33 is formed from the same bus bar 30 that forms the press contact terminal 27. Therefore, the bridge cutter 33 can be easily configured by changing the partial shape of the bus bar 30 and adding a bending process. Further, the fall prevention wall 34 is also formed from the same bus bar 30 that forms the press contact terminal 27. Accordingly, the fall prevention wall 34 can be easily configured, and the bus bar 30 is stronger than the resin material, so that the fall prevention wall 34 becomes strong.

  The pair of bridge cutters 33 arranged on both outer sides of the press contact terminal 27 are formed on tapered surfaces 33a whose tip portions are inclined downward from the inside toward the outside. Therefore, in the process of pressing the flat wire 40 to the press contact terminal 27, the inner fracture position by the pair of bridge cutters 33 is the same position, so that the electric wire 41 positioned between the pair of bridge cutters 33 may be displaced. There is no pressure contact at the proper position.

  In addition, in this embodiment, although the case where the vehicle-mounted interior illuminating device 1 was attached to the ceiling of a vehicle compartment was shown, the attachment place is not limited to the ceiling of a vehicle compartment.

1 shows an embodiment of the present invention and is an exploded perspective view of an in-vehicle indoor lighting device. FIG. 1 is a perspective view of a housing of a functional unit according to an embodiment of the present invention. 1 shows an embodiment of the present invention, (a) is a perspective view of the main part of a pressure contact terminal, a bridge cutter, etc., (b) is a main part of the pressure contact terminal, a bridge cutter, etc. as seen from a direction different from FIG. It is a perspective view. It is sectional drawing of the press-contact terminal which showed one Embodiment of this invention and the flat electric wire was press-connected. FIG. 4 is a perspective view showing the embodiment of the present invention and before bending the press contact terminal itself in the process of manufacturing the press contact terminal. FIG. 4 is a perspective view showing the embodiment of the present invention and before bending the bridge in the process of manufacturing the press contact terminal. It is a perspective view which shows one Embodiment of this invention and shows the state which aligned the flat electric wire above the press-contact terminal. It is a front view which shows one Embodiment of this invention and shows the state which aligned the flat electric wire above the press-contact terminal. It is a front view for demonstrating one Embodiment of this invention and explaining that the electric wire insertion slit of a press-contact terminal does not spread. It is a perspective view of the housing of the function part of a prior art example. It is a perspective view of the press-contact terminal and fall prevention wall of a prior art example. (A) shows a conventional example, a perspective view showing a state where a flat electric wire is aligned above the press contact terminal, (b) shows a conventional example, and shows a front view showing a state where the flat electric wire is aligned above the press contact terminal FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle interior lighting device 25 Electric wire routing part 27 Pressure contact terminal 30 Bus bar 33 Bridge cutter 33a Tapered surface 34 Fall prevention wall 40 Flat electric wire 42 Bridge

Claims (5)

An in-vehicle indoor lighting device in which a pressure contact terminal is provided in the wire routing portion, and a wire of a flat wire is connected to the pressure contact terminal by pressure welding,
An in-vehicle interior lighting device, wherein a bridge cutter is provided outside the press contact terminal and at a position corresponding to the bridge of the flat electric wire. The vehicle interior lighting device according to claim 1,
The in-vehicle indoor lighting device, wherein the bridge cutter is disposed in the vicinity of both outer sides of the press contact terminal. The in-vehicle indoor lighting device according to claim 1 or 2,
The in-vehicle indoor lighting device, wherein the bridge cutter is provided with a fall prevention wall for preventing the fall of the press contact terminal. The in-vehicle indoor lighting device according to any one of claims 1 to 3,
The in-vehicle interior lighting device, wherein the bridge cutter is formed from the same bus bar that forms the press contact terminal. The in-vehicle indoor lighting device according to any one of claims 2 to 4,
A pair of the bridge cutters arranged on both outer sides of the press contact terminals are tapered surfaces whose tip portions are inclined downward from the inside toward the outside.

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