JP2013196966A - Pressure contact terminal part structure of electrical product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the shape of a pressure contact blade in a pressure contact terminal part structure of an electrical product in which a plurality of electric wires are respectively press-fitted into pressure contact blades of a plurality of pressure contact terminals.SOLUTION: In the pressure contact part structure in which a pressure contact blade 17 is formed by making a base plate 15 support a coat cutting blade 17a for cutting a coat of an electric wire 34 and a pressure contact groove 17b extended from a rear end of the coat cutting blade to bring a core wire of the electric wire into pressure contact, the base plate 15 of the pressure contact blade is formed by being held on a support surface 18a formed on a housing member 18 of an electrical product, an electric wire holder 30 with a plurality of electric wires arranged and held is rotated around a shaft 37 parallel with the extension direction of the electric wires, and the plurality of electric wires are respectively brought into pressure contact with pressure contact blades 17. Angles made between a groove axis of the pressure contact grooves 17b and the base plate 15 are formed equally, and each support surface 18a of a housing member for supporting the pressure contact blades is formed inclinedly such that the groove axis of the pressure contact grooves 17b is maintained in accordance with a tangential direction of a rotation track 38 of each electric wire rotating due to the rotation of the electric wire holder.

Description

  The present invention relates to a pressure contact terminal structure of an electrical component, and more particularly, to a pressure contact terminal configuration that presses a plurality of wires aligned and held in a wire holder to a pressure contact terminal provided in the electrical component.

  When connecting electric wires such as power lines and signal lines to various electrical components mounted on vehicles such as automobiles, as described in Patent Document 1, wiring using a wire harness is widely adopted. Yes. In the example shown in the same document, a plurality of electric wires constituting a wire harness connected to a plurality of in-vehicle electrical components (for example, various indoor lamps) are aligned and held in an electric wire holder, and the electric wire holder is connected to a plurality of pressure contacts. A plurality of wires are attached to a corresponding pressure contact terminal of the electrical component so as to be capable of being pressed at a time by being mounted on the holder receiving portion on the electrical component side where the terminal is provided.

  In general, the press contact terminal, as described in the same document, a cutting blade that is formed with a pair of blades facing each other and the blade edge interval is narrowed from the front end side toward the rear end side to cut the coating of the wire, A press contact blade formed by extending from the rear end side of the cutting blade and having a press contact groove for press-contacting the core wire of the electric wire is formed by supporting the substrate. As a result, when the electric wire is press-fitted from the distal end side of the press contact blade, the coating of the electric wire is cut by the press contact blade and the core wire is exposed, and when the electric wire is further press-fitted, the exposed portion of the core wire is press-fitted into the press contact groove and press-contacted with the core wire. The terminal is electrically connected.

  The thus formed press contact terminal is connected to a circuit conductor such as a bus bar of an electrical component, and is fixed to a holder receiving portion formed on a housing to which the electric wire holder is mounted. The electric wire holder is rotatably attached to the housing of the electrical component in order to press-fit the plurality of aligned electric wires into the plurality of press contact terminals provided in the holder receiving portion. For example, the wire holder is provided with a rotating shaft at a position appropriately separated from the wire alignment holding portion, and a shaft support portion that pivotally supports the rotating shaft of the wire holder is formed in the housing of the electrical component. Has been. In addition, the electric wire holder includes an engaging portion that engages with a lock portion formed on the housing of the electrical component at a position that is appropriately separated from the rotating shaft across the alignment holding portion of the electric wire. It has been. When the electric wire holder is fixed to the lock portion, the end of the electric wire holder on the opposite side across the rotation shaft comes into contact with the rotation restricting portion formed in the housing, and the reaction force of the electric wire holder The electric wire is sufficiently press-fitted into the press-contact blade to complete the press-contact.

JP 2011-113802 A

  By the way, according to the structure of the press-contact terminal part of patent document 1, since the several electric wire is aligned and hold | maintained in parallel with the rotation axis | shaft of an electric wire holder, each electric wire centers on the rotation axis | shaft of an electric wire holder. It moves along an arcuate rotation trajectory and is press-fitted into the press contact blade of the press contact terminal. Therefore, the radius of the trajectory of each wire varies depending on the alignment position, and the larger the rotation radius, the greater the amount of movement with respect to the press contact blade. Therefore, the shape of the groove shaft angle, groove length, etc. for each press contact blade Need to be different. As a result, since the shape differs for each press contact blade, there are problems to be improved in manufacturing efficiency, dimensional management, assembly management, and the like.

  The problem to be solved by the present invention is that an electric wire holder that aligns and holds a plurality of electric wires is rotated about an axis parallel to the electric wires, and the electric wires are press-fitted into the press contact blades of a plurality of press contact terminals, respectively. In the press contact terminal structure, the shape of the press contact blade is to be simplified.

  In order to solve the above-described problems, the present invention provides an electrical component having a shaft support portion that rotatably supports a rotation shaft formed on an electric wire holder in which a plurality of electric wires are aligned and held, and a circuit conductor of the electrical component. A plurality of press contact terminals provided in connection with each other, each of the press contact terminals being formed with a pair of blades facing each other and narrowing the blade edge interval from the front end side to the rear end side to cover the wire. A coated cutting blade to be cut, and a pressure contact groove formed by extending from the rear end of the coated cutting blade to press the core wire of the electric wire are supported by the substrate, and the substrate is a housing member of the electrical component The plurality of electric wires are respectively held at positions where the electric wire holder is rotated around an axis parallel to the extending direction of the plurality of electric wires and is engaged and locked with the electrical component. Electrical equipment pressure contact terminals that are in pressure contact with the pressure contact terminals In the structure, each press contact terminal is formed with the same angle between the groove axis of the press contact groove of the press contact blade and the substrate, and each support surface of the housing member has the groove axis of the press contact groove as the wire axis. It is formed to be inclined so as to be held in accordance with the tangential direction of the rotation trajectory of each of the electric wires rotating with the rotation of the holder.

  That is, the present invention adjusts the inclination angle of each support surface of the housing member that supports the substrate of each press contact blade, thereby aligning the groove axis of the press contact groove of each press contact blade with the tangential direction of the rotation trajectory of each electric wire. It is characterized by that. As a result, even if the tangential direction or turning radius of the turning trajectory of each electric wire is different, the angle formed by the groove axis of the press contact groove of the press contact blade and the substrate can be made common, and the shape of the press contact blade is simplified. can do. It should be noted that the size and thickness of the pressure contact terminal are naturally different depending on conditions such as current capacity and the thickness of the electric wire. Can be identical. Thereby, according to this invention, the manufacture efficiency of a press-contact terminal, dimension management, assembly management, etc. can be improved. Moreover, it is preferable that the alignment surface of the electric wires aligned and held by the electric wire holder is flat, but when the alignment surface is a curved surface or a step surface, the height of each press contact blade must be different. In this case, if the height of each support surface of the housing member is adjusted in accordance with the height of each press contact blade, simplification such that the shape of the press contact blade can be made the same can be achieved.

  According to the present invention, the pressure contact terminal part structure of an electrical component in which a plurality of electric wires are press-fitted into the press contact blades of the plurality of press contact terminals by rotating an electric wire holder in which a plurality of electric wires are aligned and held around an axis parallel to the electric wires. The shape of the press contact blade can be simplified.

It is a figure which shows the press-contact terminal part structure of the electrical equipment of one Embodiment of this invention, (a) is a perspective view which shows the whole housing, (b) is an expansion perspective view of a press-contact terminal part structure, (c) is press-contact. It is an enlarged view of the press-contacting blade part of a terminal. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the press-contact terminal part structure of the electrical equipment of one Embodiment of this invention, (a) is a figure which shows the state before attaching an electric wire holder to an electrical equipment and press-fitting a some electric wire to a press-contact blade. b) is a diagram showing an attachment state of the press contact blade of the characteristic part of the present invention. It is a figure explaining the structure of the electric wire holder used for embodiment of FIG. In the embodiment of FIG. 2, it is a figure which shows the state immediately before rotating an electric wire holder and press-fitting each electric wire to a press-contact blade. In the embodiment of FIG. 2, it is a figure which shows the state which rotated the electric wire holder and press-fitted each electric wire to the press-contacting blade.

  Hereinafter, an embodiment to which the press contact terminal structure of an electrical component of the present invention is applied will be described with reference to the drawings. FIG. 1 is a configuration diagram of an embodiment in which a press contact terminal structure of the present invention is applied to an indoor lamp that is an example of various electrical components mounted on a vehicle such as an automobile. FIG. 1A shows a perspective configuration diagram of a resin housing 10 constituting an indoor lamp. Although not shown, the housing 10 is formed so as to accommodate one or more lamps and components such as a switch knob. The housing 10 is provided with a circuit conductor such as a copper alloy bus bar 11 for supplying power to the lamp. The bus bar 11 is connected to a press contact terminal 13 having a plurality of press contact blades 17 to which a plurality of electric wires for supplying power from the outside of the electrical component are connected, as shown in FIGS. Yes.

  Each press contact terminal 13 is formed of a copper alloy plate member, and a substrate 15 held in contact with a support surface 18a formed on the housing member 18 of the holder receiving portion 14 formed on the housing 10, and the substrate 15 The press contact blade 17 is formed of a plate member provided upright and a connection conductor 16 connected to the bus bar 11. The bus bar 11 and the connection conductor 16 are connected to each other at a portion indicated by a dashed line A in FIG. The press contact blade 17 is formed by opening a cutting edge of an opposing blade that cuts the coating of the electric wire and extending from the base end of the coated cutting blade 17a to the substrate 15 side and extending toward the substrate 15 side. A pressure contact groove 17b that presses the core wire is formed. The base end of the coated cutting blade 17a has a gap equivalent to the core wire diameter of the electric wire 34, and a pressure contact groove 17b having a groove width narrower than the core wire diameter extends from the gap. In this way, each press contact terminal 13 is formed with a pair of blades facing each other and the blade edge interval is narrowed from the front end side toward the rear end side to cut the covering of the electric wire, and the covering cutting blade 17a. The press contact groove 17b is formed by extending from the rear end and presses the core wire of the electric wire. Each press contact terminal 13 is held by contacting the substrate 15 with a support surface 18 a formed on the housing member 18. The press contact blade 17 is backed by a resin reinforcing member 12.

  A configuration of the electric wire holder that aligns and holds a plurality of electric wires that are press-contacted to the respective press-contact terminals 13 configured as described above will be described with reference to FIG. The figure shows an example of an electric wire holder 30 for aligning and holding a plurality of electric wires for supplying power from the outside to the press contact terminals 13 of the electrical equipment. When wiring power lines and signal lines to in-vehicle electrical components, wiring using wire harnesses is widely adopted, and a connector for connecting to a terminal such as a power source is provided at one end of a bundle of wire harnesses. . A plurality of electric wires are aligned and held in the middle of the wire harness and / or at the terminal, and an electric wire holder 30 formed so that the electric wires can be pressed against the press contact terminal 13 of the electrical component is provided. As shown in the figure, the upper housing 31 and the lower housing 32 made of resin constituting the electric wire holder 30 are formed so as to be openable and closable in the direction of the illustrated arrow 42 via the hinge portion 33. A plurality of electric wire holding members 35a and 35b each having a half groove for aligning and holding a plurality of (three in the illustrated example) electric wires 34 at positions opposite to the open / close joint surfaces of the upper housing 31 and the lower housing 32 are provided. It is provided in the arrangement direction and the extending direction of the electric wires. Lock portions 36a and 36b are formed at the opposite ends of the hinge portion 33 of the upper housing 31 and the lower housing 32 to engage with each other and hold the closed state of both. In addition, a pair of cylindrical rotating shafts 37 project from the corresponding positions on both side surfaces near the hinge portion 33 of the upper housing 31. Further, the lower housing 32 is formed with an engaging portion 43 that engages with a lock portion of a holder receiving portion of an electrical component to which the electric wire holder 30 is attached.

  Next, with reference to FIG. 2, the detail of the press-contact terminal part structure which concerns on the characteristic part of this invention is demonstrated. 2A schematically shows the configuration of the holder receiving portion 14 around the press contact terminal 13 in FIG. 1 and a portion related to the electric wire holder 30 in order to avoid the complexity of the drawing. As shown in FIG. 6A, the holder receiving portion 14 includes a housing member 18, and the number of press contact terminals 13 corresponding to the number of connected wires is arranged on the upper surface of the housing member 18. Accordingly, the coated cutting blade 17a of the press contact blade 17 is arranged facing upward. In the drawing of the press contact terminal 13, a pair of shaft support portions 19, each of which has a semicircular upper opening groove that rotatably supports a rotation shaft 37 formed on the electric wire holder 30 erected on the upper surface of the right housing member 18. Is provided. Further, the electric wire holder 30 is restrained to the holder receiving portion 14 by engaging with the engaging portion 43 provided on the electric wire holder 30 on the upper surface of the housing member 18 on the opposite side of the shaft support portion 19 with the press contact terminal 13 interposed therebetween. A lock portion 20 is provided. Further, on the upper surface of the housing member 18, when the electric wire holder 30 is rotated around the shaft support portion 19 in the direction of the arrow 21 and engaged with the lock portion 20, an end portion 32 a of the lower housing 32 of the electric wire holder 30 is provided. A rotation restricting portion 22 that abuts and restricts the rotation of the electric wire holder 30 is provided.

  A detailed configuration of the press contact blade 17 of the present embodiment will be described with reference to FIGS. 2A, when the electric wire 34 is press-fitted into the press contact blade 17 of the press contact terminal 13, the electric wire holder 30 is rotated in the direction of the arrow 21 shown in the drawing. At this time, the rotation trajectory 38 of each electric wire 34 that rotates with the rotation of the electric wire holder 30 has an arc shape with the rotation shaft 37 as the center. Here, the press-fitting completion position of each electric wire 34 with respect to the press contact blade 17 is, for example, the alignment surface 39 of each electric wire 34 aligned and held on the reference surface 23 set on the upper surface of the housing member 18 as shown in FIG. When the position is set to be parallel, the position 40 of the pressure contact groove 17b of the pressure contact blade 17 is also formed in accordance with this position so as to be substantially parallel to the reference plane 23. And the height position 41 from the reference surface 23 of the rotating shaft 37 is also set so that each electric wire 24 is fully press-fitted into the press contact groove 17b of the press contact blade 17 in accordance with this.

  However, as shown in FIG. 2A, when the position 40 of the pressure contact groove 17b is lower than the position 41 of the rotation center of the rotation shaft 37 and there is a height difference ΔH, the rotation at the position of the pressure contact groove 17b is performed. The tangential direction of the movement locus 38 is not perpendicular to the reference plane 23. Therefore, if the groove axis of the pressure contact groove 17b is not formed to be inclined in the tangential direction of the rotation locus 38 (in the illustrated example, inclined to the left side), the core wire of the electric wire 24 is smoothly pressed into the pressure contact groove 17b. There is a risk that it will not be. Therefore, conventionally, the substrate 15 of the press contact blade 17 is installed in parallel to the reference surface 23 of the housing member 18, and the angle formed by the substrate surface 15a of the substrate 15 and the groove axis of the press contact groove 17b is set for each press contact blade 17. It was set to. Moreover, since the radius of the rotation locus 38 of each electric wire 24 increases as the distance from the rotation center of the rotation shaft 37 increases, the press-fitting length increases accordingly, so that the length of the press contact groove 17b for each press contact blade 17 is increased. There was a need to adjust.

  Therefore, in the present embodiment, the angle formed by the substrate surface 15a of the press contact blade 17 and the groove axis of the press contact groove 17b with respect to each electric wire 24 is made the same (for example, a right angle), and the shape of the press contact blade 17 is simplified. Aim for that. In order to achieve this aim, as shown in FIGS. 1 (c) and 2 (b), the press contact blade 17 so that the groove axis of the press contact groove 17 b coincides with the tangential direction of the rotation locus 38 of each electric wire 24. The support surface 18a of the housing member 18 that supports the substrate surface 15a by contacting the substrate surface 15a is inclined. In this case, the inclination angle of the support surface 18a of the housing member 18 varies depending on the radius of the rotation locus 38 of each electric wire 24. However, since the housing 10 is resin-molded, the dimensions of the mold may be managed. Management becomes extremely easy.

  According to the pressure contact terminal part structure of the electrical component of this embodiment formed as described above, when the wire holder 30 is rotated in the direction of the arrow 21 from the state of FIG. 2A, the state of FIG. 4 is reached. The end 25a of the lower housing 25 of the electric wire holder contacts the lower surface 22a of the protrusion of the rotation restricting portion 22. When the electric wire holder 30 is further rotated, the contact between the end 25a of the lower housing 25 and the lower surface 22a of the rotation restricting portion 22 serves as a fulcrum, and each electric wire aligned and held by the force 45 applied to the operation lever 44 of the electric wire holder 30 is supported. 34 is press-fitted into the press contact blade 17. Thereby, the insulation coating of each electric wire 34 is cut and the core wire is exposed, and the exposed core wire is press-fitted into the press contact groove 17b, and the electric connection between the electric wire 34 and the circuit conductor of the electrical component is made. In this state, as shown in FIG. 5, the engaging portion 43 of the electric wire holder 30 engages with the lock portion 20 of the holder receiving portion 14 and is firmly connected.

  As described above, according to the present embodiment, the electrical component having the shaft support portion 19 that rotatably supports the rotation shaft 37 formed on the electric wire holder 30 in which the plurality of electric wires 34 are aligned and held; And a plurality of press contact terminals 13 connected to the bus bar 11 of the electrical component, and each press contact terminal 13 is formed with a pair of blades facing each other and with a cutting edge interval narrowed from the front end side toward the rear end side. A coating cutting blade 17a that cuts the coating of the electric wire 34, and a press contact groove 17b that extends from the rear end of the coating cutting blade 17a and presses the core wire of the electric wire 34, and is formed by supporting the substrate 15; and The substrate 15 is held on the support surface 18a formed on the housing member 18 of the electrical component, and the electric wire holder 30 is rotated about an axis parallel to the extending direction of the plurality of electric wires 34, so that the lock portion 20 of the electrical component is provided. In the position where the engagement is locked In the press contact terminal portion structure of an electrical component in which each of the electric wires 34 is press-contacted to the press contact terminal 13, each press contact terminal 13 has the same angle between the groove axis of the press contact groove 17 b of the press contact blade 17 and the substrate surface 15 a of the substrate 15. The support surfaces 18a of the housing member 18 are configured to hold the groove axis of the pressure contact groove 17b in accordance with the tangential direction of the rotation trajectory 38 of each electric wire 34 that rotates as the electric wire holder 30 rotates. Therefore, the angle formed by the groove axis of the press contact groove 17b of the press contact blade 17 and the substrate surface 15a, regardless of the difference in the radius of the rotation trajectory 38 of each electric wire 34 and the press-fitting completion position. Since they can be formed identically, the shape of the press contact blade can be simplified.

  In the above-described embodiment, the example in which the plurality of electric wires 24 are aligned and held on the same plane as the electric wire holder 30 to be mounted by rotation is shown, but the present invention is not limited to this, and the plurality of electric wires 24 are curved or The present invention can also be applied to the case where the surfaces are aligned and held on different planes having steps. In this case, in addition to adjusting the inclination angle of the support surface 18 a of the housing member 18, it can be dealt with by adjusting the height from the reference surface 23.

DESCRIPTION OF SYMBOLS 10 Housing 11 Bus bar 12 Reinforcement member 13 Pressure contact terminal 14 Holder receiving part 15 Board | substrate 16 Connection conductor 17 Pressure contact blade 17a Coated cutting blade 17b Pressure contact groove 18 Housing member 18a Support surface 19 Shaft support 30 Electric wire holder 34 Electric wire 37 Rotating shaft 38 Rotation Trajectory

Claims (1)

An electrical component having a shaft support portion rotatably supporting a rotation shaft formed on an electric wire holder in which a plurality of electric wires are aligned and held, and a plurality of press contact terminals provided in connection with a circuit conductor of the electrical component Each of the press contact terminals is formed with a pair of blades facing each other and the blade edge interval is narrowed from the front end side toward the rear end side to cut the covering of the electric wire, and the covering cutting blade Formed by extending from the rear end of the wire, and supporting the pressure contact groove for pressing the core of the electric wire on the substrate, and the substrate is held on a support surface formed on the housing member of the electrical component, The electric wire holder is rotated around an axis parallel to the extending direction of the plurality of electric wires, and the plurality of electric wires are pressed against the press contact terminals at positions where the electric wires are engaged and locked. In the terminal structure,
Each of the press contact terminals is formed to have the same angle formed by the groove axis of the press contact groove of the press contact blade and the substrate,
Each supporting surface of the housing member is formed to be inclined so as to hold the groove axis of the pressure contact groove in accordance with the tangential direction of the rotation trajectory of each electric wire that rotates as the electric wire holder rotates. A press-contacting terminal structure of an electrical component characterized by being made.

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