JP5551668B2 - Terminal block - Google Patents

Description

  The present invention relates to a terminal block for connecting a crimp terminal or the like for wiring.

  Conventionally, for example, a terminal block is used for connection between a power supply device and an electronic device that receives power supply from the power supply device.

  The terminal block is attached to the housing of the electronic device, and the power supply unit and the electronic components inside the electronic device are connected by lead wires through the terminal block, and the lead wires are connected to the upper and lower wiring connection portions of the terminal block partitioned by the opposing partition walls. A crimp terminal attached to the tip of the wire is screwed.

  As disclosed in Patent Document 1, conventionally, various proposals have been made to prevent screws from falling off when attaching / detaching a crimp terminal to / from a terminal block.

  In addition, conventionally, for example, a capacitor for removing high-frequency noise of an electronic device or a resistor for discharging may be connected to the terminal block connecting the power supply device and the electronic device. When connecting components such as resistors and resistors, a method of attaching a crimp terminal or lug terminal to the tip of the lead wire of the component and further screwing these terminals to the wiring connection portion of the terminal block is used.

JP 2010-139287 A

  However, in addition to the connection work between the power supply device using a crimp terminal and the like and the electronic device, the conventional method of connecting a capacitor, a resistor, and other parts to the terminal block using the crimp terminal or the like has a large number of work steps. The fact was that it took time and effort.

  The present invention has been devised in view of such circumstances, and it is an object of the present invention to provide a terminal block that eliminates the need for screwing with a crimp terminal or the like when mounting components such as capacitors and resistors to the terminal block as described above. And

  In order to achieve such an object, a terminal block according to claim 1 is configured such that a crimp terminal is screwed from a wiring connection portion at an upper part of a terminal block body defined by opposing partition walls to a wiring connection portion at a lower part of the terminal block body. A cylindrical body in which the screw mounting hole to be fixed is opened in the vertical direction is formed integrally, and a lead wire insertion hole in which the center axis of each screw mounting hole intersects the axis is formed on the side of the terminal block body. The lead wire of the mounting part to the terminal block body that is formed and inserted into the lead wire insertion hole is sandwiched between the upper screw and the lower screw that are tightened into the screw mounting hole, and the wiring connection portion It is electrically connected to a crimping terminal screwed to the base plate.

  And the invention which concerns on Claim 2 WHEREIN: The terminal block of Claim 1 WHEREIN: The bottomed cylindrical screw attachment bracket which a screw can be screwed in the lower opening part of the screw attachment hole of the said cylindrical body The screw mounting bracket is attached to the top of the screw mounting bracket via a spring member, and the lead wire pressing bracket biased by the spring member is positioned on the inner periphery of the screw mounting hole. A stopper is protruded, and the lead wire inserted into the lead wire insertion hole abuts on the top of the lead wire holding metal member positioned by the stopper.

  The invention according to claim 3 is the terminal block according to claim 1 or 2, wherein the cylindrical body is formed of a metal material separate from the terminal block body formed of a resin material. The inner periphery of the upper side of the screw mounting hole is screwed so that the screw can be screwed, and the invention according to claim 4 provides the terminal block according to claim 1 or 2, In this case, the cylindrical body is integrally formed with a terminal block body formed of a resin material, and a cylindrical screw mounting bracket to which a screw can be screwed is press-fitted into an upper opening of the screw mounting hole. It is characterized by that.

  According to a fifth aspect of the present invention, in the terminal block according to the first or second aspect, the lead wire insertion hole has a shape of a long hole in a front view that is long in the vertical direction. And

  According to the invention according to each claim, it is possible to connect the lead wire of the resistor and the capacitor to the terminal block at the same time as the crimping terminal is screwed to the wiring connection portion. The work man-hours were reduced compared to the connection work.

  According to the second aspect of the present invention, the lead wire is sandwiched between the upper screw and the lead wire presser member that is spring-biased from below, so that the lead wire is prevented from dropping from the lead wire insertion hole. Therefore, it has an advantage of excellent workability.

  Further, according to the invention according to claim 3, since the upper and lower wiring connecting portions are electrically connected via the metal cylindrical body, a large current can be flowed, and the invention according to claim 4 is provided. According to this, by forming the cylindrical body integrally when molding the terminal block main body, it is easy to manufacture and the cost can be reduced.

  And according to the invention which concerns on Claim 5, it becomes possible to prevent more reliably the curvature of the lead wire accompanying the clamping | tightening of an upper screw.

It is a front view of the terminal block which concerns on one Embodiment of Claim 1 and Claim 2. It is a top view of a terminal block main body. It is a front view of a terminal block main body. It is a side view of a terminal block main part. It is a top view of a cylindrical body. It is a side view of a cylindrical body. It is a front view of a cylindrical body. It is a front view of the cylindrical body to which the screw attachment metal fitting and the crimp terminal were attached up and down. It is sectional drawing of the cylindrical body to which the screw attachment bracket and the crimp terminal were attached up and down. It is an exploded view of the cylindrical body shown in FIG. It is the top view and front view of a screw attachment metal fitting. It is the top view and front view of a screw attachment metal fitting. It is the top view and front view of a lead wire holding metal fitting. It is a front view of the terminal block main body which concerns on one Embodiment of Claim 1, Claim 2 and Claim 5. It is a top view of a cylindrical body. It is a front view of a cylindrical body.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a terminal block according to an embodiment of claims 1 and 2, wherein 1 is a plate-like base formed in a rectangular shape in plan view, 3 is above and below the base 1, etc. As shown in FIGS. 1 to 4, block-shaped cylindrical body mounting portions 5, 7 are formed between the upper and lower partition walls 3 of the base 1, with a plurality of partition walls facing each other at intervals. A terminal block body 11 of the terminal block 9 according to the embodiment is formed. And the upper part of the cylindrical body attaching part 5 and the lower part of the cylindrical body attaching part 7 divided by the partition 3 are made into the wiring connection parts 19 and 21 which fix the crimp terminal 13 with the screws 15 and 17, respectively. The terminal block body 11 is a resin molded product.

  Further, as shown in FIGS. 2 to 4, a square shape in a plan view extends from the wiring connection part 19 at the upper part of the cylindrical body attachment part 5 divided by the partition wall 3 to the wiring connection part 21 at the lower part of the cylindrical body attachment part 7. The cylindrical body mounting hole 23 is opened. Each cylindrical body mounting hole 23 is integrally incorporated with a metal cylindrical body 25 formed in a square shape in plan view when the terminal block body 11 is molded. The lower part is flush with the wiring connection parts 19 and 21.

  Further, as shown in FIGS. 1 and 3, the center axis of the cylindrical body mounting hole 23 intersects with the center of the cylindrical body mounting hole 23 from the center front side to the back surface side corresponding to each cylindrical body mounting hole 23. A lead wire insertion hole 27 having a circular shape in front view is provided perpendicular to the longitudinal direction of the base 1.

  5 to 10 show details of the cylindrical body 25, and a screw mounting hole 29 having a circular shape in a plan view for fastening the screws 15 and 17 is provided at the center of the cylindrical body 25 formed in a square shape in a plan view. The center axis of the screw mounting hole 29 and the center axis of the cylindrical body mounting hole 23 coincide with each other.

  Corresponding to the lead wire insertion hole 27, a lead wire insertion hole 31 having the same diameter as the lead wire insertion hole 27 is provided on the peripheral wall of the cylindrical body 25 with an interval of 180 degrees. By providing lead wire insertion holes 27 and 31 in the terminal block main body 11 and the cylindrical body 25, as shown in FIGS. 1 and 9, two mounting parts such as a discharge resistor 33 and a capacitor (not shown) are provided. The lead wires 35 can be inserted into the lead wire insertion holes 27 and 31 one by one from the front side to the back side of the terminal block main body 11 one by one.

  Further, as shown in FIGS. 5 to 7, 9, and 10, a stopper 39 made of an annular projection for positioning a lead wire pressing metal fitting 37 to be described later protrudes from the inner periphery of the screw mounting hole 29. A lead wire insertion hole 31 is opened along the upper portion of the stopper 39.

  In FIG. 10, reference numeral 41 denotes a screw mounting bracket press-fitted into the upper opening of the screw mounting hole 29. As shown in FIGS. 10, 11 (a) and 11 (b), the screw mounting bracket 41 is a screw mounting bracket. The cylindrical body 43 is press-fitted into the mounting hole 29, and an annular flange 45 is provided on the outer periphery of the upper portion of the cylindrical body 43. The inner periphery 47 of the cylindrical body 43 is screwed so that the screw 15 can be screwed. After the cylindrical body 43 is press-fitted into the screw mounting hole 29 as shown in FIGS. When the screw 15 is inserted into the electrode connecting portion 49 and tightened to the inner periphery 47 of the cylindrical body 43, the crimp terminal 13 is screwed to the wiring connecting portion 19 as shown in FIGS. An annular flange 45 abuts on the upper part of the cylindrical body 25.

  On the other hand, as shown in FIG. 10, a screw mounting bracket 51 to which the screw 17 can be screwed is press-fitted into the lower opening of the screw mounting hole 29. As shown in FIGS. 10, 12 (a), and 12 (b), the screw mounting bracket 51 includes a bottomed cylindrical body 55 having a lower opening and an inner periphery 53 threaded, and a lower portion of the cylindrical body 55. It is comprised by the annular flange 57 protrudingly provided by the outer periphery. And the lead wire pressing metal fitting 37 is attached to the top 59 of the cylindrical body 55 via the coil spring 61 on the central axis of the cylindrical body 55, and one end side of the coil spring 61 is provided at the center of the top 59. The other end of the coil spring 61 is attached to the spring attachment hole 64 at the center of the bottom portion of the lead wire pressing metal fitting 37.

  As shown in FIGS. 13A and 13B, the lead wire pressing metal fitting 37 is formed in a dish shape having a substantially convex cross section, and the outer periphery 67 of the upper convex portion 65 is formed in a taper shape. Then, as shown in FIG. 10, after the lead wire presser 37 is first pressed into the lower opening of the screw mounting hole 29 and the screw mounting bracket 51 is fastened with the screw 17, the screw mounting bracket 51 is fixed to FIG. As shown in the drawing, the lead wire pressing member 37 urged upward by the spring force of the coil spring 61 is positioned so that the outer periphery 65 of the convex portion 63 is pressed against the stopper 39. At this time, the convex portion The top part of 63 is substantially the same position as the lead wire insertion holes 27, 31, and the lead wire 35 inserted into the lead wire insertion holes 27, 31 comes into linear contact with the top part of the convex part 63. .

  Then, as shown in FIG. 9, when the screw 15 is lightly tightened to the inner periphery 47 of the mounting bracket 41 and the crimp terminal 13 is temporarily held on the wiring connection portion 19, the tip of the shaft portion 69 of the screw 15 and the lower side The lead wire 35 is clamped by the lead wire holding metal fitting 37 that is spring-biased from the lead wire 35 to prevent the lead wire 35 from dropping out of the lead wire insertion holes 27 and 31. If the screw 15 is firmly tightened in this state, the screw 15 presses the lead wire holding metal fitting 37 downward against the spring force of the coil spring 61. At this time, the lead wire 35 pressed by the screw 15 is pressed. The diameters of the lead wire insertion holes 27 and 31 are set so that they are not greatly curved.

  In addition, in FIG. 1, reference numeral 71 denotes a mounting screw for attaching the terminal block 9 (terminal block main body 11) to the housing of the electronic device. As shown in FIG. 73 is provided.

  The terminal block 9 according to the present embodiment is configured in this way, and as described above, the cylindrical body 25 is integrally incorporated in the terminal block body 11 when the terminal block body 11 is molded, and is shipped from the factory in advance. At this stage, the screw mounting brackets 41 and 51 are press-fitted into the screw mounting holes 29 of the cylindrical body 25 (wiring connection portions 19 and 21), and the lead wire pressing bracket 37 is inserted into the cylindrical body 25 (terminal block body 11). It is accommodated via a screw mounting bracket 51 and a coil spring 61.

  In the same manner as the conventional terminal block, for example, in order to connect the power supply device to an electronic device such as a communication device using the terminal block 9, a crimp terminal attached to each lead wire of the electronic device and the power supply device is screwed 15. , 17 may be used to connect to the wiring connection portions 19, 21.

  On the other hand, when a discharge resistor 33 or a noise removing capacitor is connected to the terminal block 9, the resistance is applied from the front side of the terminal block body 11 before the screw 15 is tightened in the above-described crimp terminal mounting operation. 33 lead wires 35 may be inserted into the lead wire insertion holes 27 and 31.

  Thus, as described above, the lead wire holding metal fitting 37 positioned on the stopper 39 has the top portion of the convex portion 63 substantially in the same position as the lead wire insertion holes 27 and 31, so that the lead wire 35 is a terminal. The base body 11 is smoothly inserted from the front side to the back side. Further, even if the top portion of the lead wire holding metal fitting 37 protrudes slightly above the lead wire insertion hole 31, and the tip of the lead wire 35 inserted into the lead wire insertion holes 27, 31 hits the outer periphery 67 of the convex portion 65. Since the outer periphery 67 is formed in a taper shape, the lead wire 35 is guided along the outer periphery 67 to the lead wire insertion hole 31 on the opposite side.

  Thereafter, as shown in FIG. 9, if the screw 15 is lightly tightened to the inner periphery 47 of the mounting bracket 41 and the crimp terminal 13 is temporarily held in the wiring connection portion 19, the tip of the shaft portion 69 of the screw 15 The lead wire 35 is clamped by a lead wire pressing member 37 that is spring-biased from below, thereby preventing the lead wire 35 from dropping out of the lead wire insertion holes 27 and 31. When the screw 15 is firmly tightened in this state, the screw 15 resists the spring force of the coil spring 61 and presses the lead wire holding metal fitting 37 downward, and the crimping terminal 13 is fixed to the wiring connecting portion 19 and metal. The crimp terminal 13 and the lower wiring connection portion 21 side are electrically connected via the tubular body 25 made of the metal. In addition, since the lead wire insertion holes 27 and 31 are set so that the lead wire 35 pressed by the screw 15 is not greatly bent, the lead wire 35 is not damaged.

  As described above, according to the present embodiment, when connecting the discharge resistor 33 or the noise removing capacitor to the terminal block 9, the lead wire 35 such as the resistor 33 is inserted into the lead wire insertion holes 27 and 31, and the crimp terminal Since the lead wire 35 is sandwiched and fixed between the lead wire holding member 37 and the screw 15 that are spring-biased by the coil spring 61 by simply tightening the upper screw 15 for fastening the screw 13, the crimp terminal At the same time as screwing 13, it becomes possible to connect the resistor 33 and the capacitor lead wire 35 to the terminal block 9, and the work man-hours can be reduced as compared with the connecting operation of the resistor 33 and the capacitor using the conventional crimp terminal. It became a thing.

  In addition, according to the present embodiment, since the upper crimp terminal 13 and the lower wiring connection portion 21 side are electrically connected via the metal cylindrical body 25, a large current is passed through the terminal block 9. It can flow.

  Furthermore, according to this embodiment, as described above, if the screw 15 is lightly fastened to the inner periphery 47 of the mounting bracket 41 and the crimp terminal 13 is temporarily held on the wiring connecting portion 19, the axis of the screw 15 Since the lead wire 35 is sandwiched between the tip of the portion 69 and the lead wire presser fitting 37 spring-biased from below and the lead wire 35 is prevented from falling off from the lead wire insertion holes 27 and 31, workability is improved. Has excellent advantages.

  In the above embodiment, as shown in FIG. 10, the screw mounting bracket 41 is press-fitted into the upper opening of the screw mounting hole 29 of the cylindrical body 25. However, as shown in FIG. The metal fitting 41 may be omitted, and the inner periphery of the upper opening of the screw attachment hole 29 may be threaded so that the screw 15 can be directly screwed into the screw attachment hole 29.

  Moreover, in the said embodiment, although the cylindrical body 25 was formed with the metal material, the cylindrical body which a screw attachment hole opens at the time of the molding of a terminal block main body is integrally molded, and a lead wire insertion hole is provided after that. Also good.

  Thus, the terminal block according to each of the embodiments can achieve the intended purpose, similarly to the terminal block 9 of FIG. The resistor 33 and the lead wire 35 of the capacitor can be connected, and there is an advantage that the number of work steps can be reduced as compared with the connecting operation of the resistor and the capacitor using the conventional crimp terminal.

  In this way, the cylindrical body is integrally formed at the time of molding the terminal block main body, so that the manufacturing is easy and the manufacturing cost can be reduced.

  In the above embodiment, the diameter of the lead wire insertion holes 27 and 31 that are circular in front view is set so that the pressed lead wire 35 is not greatly curved as the screw 15 is tightened. In some cases, the lead wire 35 is fixed to the terminal block 9 only by tightening the screw 15 without using the crimp terminal 13.

  Thus, in this case, since the tightening amount of the screw 15 is large, the lead wire 35 may be greatly bent as the screw 15 is pressed.

  Therefore, as in the embodiments of claims 1, 2 and 5 shown in FIGS. 14 to 16, in place of the lead wire insertion holes 27, 31, lead wire insertion holes 27-1, 31-1 are provided. In addition to the shape of a long hole viewed from the front in the vertical direction, the stopper 39-1 made of a protrusion is replaced with a stopper 39-1 made of an annular protrusion, and the tubular body 25-1 is spaced apart by 180 degrees. So that the lead wire 35 can move downward along the lead wire insertion holes 27-1 and 31-1 with the contraction of the coil spring 61 as the screw 15 is pressed. It may be configured.

  Thus, according to the terminal block main body 11-1 of this embodiment, it is possible to more reliably prevent the bending of the lead wire 35 accompanying the tightening of the screw 15.

DESCRIPTION OF SYMBOLS 1 Base 3 Bulkhead 5, 7 Cylindrical body attaching part 9 Terminal block 11, 11-1 Terminal block main body 13 Crimp terminal 15, 17, 71 Screw 19, 21 Wiring connection part 23 Cylindrical body attaching hole 25, 25-1 Cylindrical body 27, 27-1, 31, 31-1 Lead wire insertion hole 29 Screw mounting hole 33 Resistance 35 Lead wire 37 Lead wire pressing bracket 39, 39-1 Stopper 41, 51 Screw mounting bracket 43, 55 Cylindrical body 45, 57 Annular flange 61 Coil spring 63, 64 Spring mounting hole

Claims (5)

A cylindrical body with a screw mounting hole for screwing the crimp terminal in the vertical direction is integrated from the wiring connection part at the upper part of the terminal block body, which is partitioned by the opposing partition walls, to the wiring connection part at the lower part of the terminal block body. And formed into
A lead wire insertion hole is formed in the side portion of the terminal block main body so that the center axis of each screw mounting hole intersects with the axis.
The lead wire of the attachment part to the terminal block body inserted into the lead wire insertion hole is sandwiched between the upper screw and the lower screw that are tightened into the screw mounting hole, and is fixed to the wiring connecting portion with screws. A terminal block that is electrically connected to the crimp terminal. A bottomed cylindrical screw mounting bracket into which a screw can be screwed is press-fitted into the lower opening of the screw mounting hole of the cylindrical body,
The screw mounting bracket is attached to a lead wire pressing bracket via a spring member at the top,
On the inner periphery of the screw mounting hole, a stopper for positioning the lead wire pressing member urged by the spring member is projected,
2. The terminal block according to claim 1, wherein a lead wire inserted into the lead wire insertion hole is in contact with a top portion of the lead wire holding metal member positioned by the stopper.   The cylindrical body is formed of a metal material separate from the terminal block body formed of a resin material, and the inner periphery of the upper side of the screw mounting hole is screwed so that the screw can be screwed. The terminal block according to claim 1, wherein the terminal block is characterized.   The cylindrical body is integrally formed with a terminal block body formed of a resin material, and a cylindrical screw mounting bracket to which a screw can be screwed is press-fitted into an upper opening of the screw mounting hole. The terminal block according to claim 1 or 2. The terminal block according to claim 1, wherein the lead wire insertion hole has a long hole shape in a front view that is long in the vertical direction.

Images