Wire pulling-out jig

Abstract

To provide a wire pulling-out jig capable of easily pulling a wire out of a terminal block.SOLUTION: A wire pulling-out jig 1 releases a wire which is inserted into a wire insertion port from the wire insertion port in a terminal block comprising a case, a plurality of wire insertion ports formed in the case and a release button for releasing the wire from the wire insertion port. The jig comprises: a fulcrum 13; a wire holding part 10 including a first wire holding member 11 and a second wire holding member 12 for holding the wire around the fulcrum 13; a handle 20 including a first arm 21 and a second arm 22 on an opposite side of the wire holding part 10 around the fulcrum 13; a wire crimping member 30 which is provided in the first wire holding member 11 and crimps the wire by making the first arm 21 movable; and a pressing member 50 which is provided in the second wire holding member 12 and presses the release button.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wire extraction jig. [Background technology]

[0002] 2. Description of the Related Art Various lighting fixtures and electrical fixtures are equipped with terminal blocks for connecting wires. When connecting a wire to a terminal block, no tools are used, and the wire is simply pushed into the wire insertion port of the terminal block to be connected and fixed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-167816 Summary of the Invention [Problem to be solved by the invention]

[0004] In the terminal block shown in the aforementioned Patent Document 1, the work of pulling out the wires is done manually, requiring one hand to insert and push a tool into the pull-out port and the other hand to pull out the wires, which makes the work complicated, especially when the working area is narrow.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a wire removal tool that can easily remove wires from a terminal block. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the wire removal tool of the present invention is a wire removal tool for a terminal block having a main body, a plurality of wire insertion ports formed on the main body, and a release button for releasing the wire from the wire insertion ports, the wire removal tool releasing the wire that has been inserted into the wire insertion port and connected to the terminal block from the wire insertion port, and is characterized in that it includes at least a fulcrum, a wire holding portion having a first wire holding portion and a second wire holding portion that hold the wire centered on the fulcrum, a handle having a first arm and a second arm on the opposite side of the wire holding portion centered on the fulcrum, and a wire clamping member provided on the first wire holding portion that clamps the wire by moving the first arm, and a pressing member provided on the second wire holding portion that presses the release button. [Effects of the Invention]

[0007] The present invention has the effect of allowing wires to be easily pulled out from the terminal block. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a side view schematically showing an example of the configuration of a wire extraction jig according to the first embodiment. [Figure 2] FIG. 2 is a side view schematically showing a state in which a first arm of the wire extracting jig shown in FIG. 1 is rotated relative to a first wire holding portion. [Figure 3] FIG. 3 is a side view schematically showing a state in which the wire holding portion of the wire extraction jig shown in FIG. 2 is rotated around a fulcrum. [Figure 4] FIG. 4 is a plan view schematically showing a terminal block from which wires are pulled out by the wire pulling out jig shown in FIG. [Figure 5] FIG. 5 is a cross-sectional view schematically showing a cross section taken along line VV in FIG. [Figure 6] FIG. 6 is a perspective view schematically showing a state in which the terminal block shown in FIG. 4 is installed in a lighting fixture, which is an example of electrical equipment. [Figure 7]FIG. 7 is a perspective view schematically showing the lighting equipment shown in FIG. [Figure 8] FIG. 8 is a plan view schematically showing the terminal block and wiring shown in FIG. [Figure 9] FIG. 9 is a cross-sectional view that schematically shows a state in which wiring is connected to the terminal block shown in FIG. [Figure 10] FIG. 10 is a cross-sectional view schematically showing a cross section taken along line XX in FIG. [Figure 11] FIG. 11 is a side view, partly in section, that schematically shows a state in which the wires connected to the terminal block are passed through the cutouts of the wire extraction jig. [Figure 12] 12 is a side view, partially in cross section, schematically showing a state in which the first arm of the wire extraction jig shown in FIG. 11 is rotated and the wire clamping member clamps the wire. [Figure 13] Figure 13 is a side view, partially in cross section, that schematically shows the state in which the wiring holding portion is rotated around the fulcrum of the wiring pull-out jig shown in Figure 12 to pull out the wiring clamped by the wiring clamping member from the core wire insertion hole of the terminal fitting. DETAILED DESCRIPTION OF THE INVENTION

[0009] Modes (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiments. Furthermore, the components described below include those that can be easily imagined by a person skilled in the art and those that are substantially the same. Furthermore, the configurations described below can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configuration can be made within the scope of the gist of the present invention.

[0010] [Embodiment 1] A wire removal jig according to a first embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a side view schematically showing an example of the configuration of the wire removal jig according to the first embodiment. Fig. 2 is a side view schematically showing a state in which a first arm of the wire removal jig shown in Fig. 1 has rotated relative to a first wire holding portion. Fig. 3 is a side view schematically showing a state in which the wire holding portion of the wire removal jig shown in Fig. 2 has rotated around a fulcrum.

[0011] (terminal block) 1, 2 and 3 according to the first embodiment is a jig for pulling out wires 200 (shown in FIG. 8) from a terminal block 100 shown in FIGS. 4 and 5. First, the terminal block 100 will be described.

[0012] FIG. 4 is a plan view schematically showing a terminal block from which wiring is pulled out by the wiring pull-out jig shown in FIG. 1. FIG. 5 is a cross-sectional view schematically showing a cross section taken along line VV in FIG. 4. FIG. 6 is a perspective view schematically showing a state in which the terminal block shown in FIG. 4 is installed in a lighting fixture, which is an example of electrical equipment. FIG. 7 is a perspective view schematically showing the lighting fixture shown in FIG. 6. FIG. 8 is a plan view schematically showing the terminal block and wiring shown in FIG. 4. FIG. 9 is a cross-sectional view schematically showing a state in which wiring is connected to the terminal block shown in FIG. 8. FIG. 10 is a cross-sectional view schematically showing a cross section taken along line XX in FIG. 9.

[0013] The terminal block 100 shown in Fig. 4 and Fig. 5 is installed in various types of electrical equipment. The terminal block 100 is installed, for example, in a lighting fixture 302, which is electrical equipment installed on a ceiling 301 of a building 300 shown in Fig. 6. The lighting fixture 302 shown in Fig. 6 has the terminal block 100 installed on the ceiling 301 side of the building 300 in which it is installed, as shown in Fig. 7, for example. The terminal block 100 is used to supply driving power to the installed electrical equipment and to connect the installed electrical equipment to earth.

[0014] 4 and 5, the terminal block 100 has a case 140 which is a main body, a plurality of wiring sockets 150, a grounding port 151, and a release button 130. In the first embodiment, the case 140 is formed in a flat box shape, and as shown in FIG. 5, the case 140 has a bottom wall 141, a top wall 142 parallel to the bottom wall 141, and a plurality of side walls 143 continuous with the outer edges of the bottom wall 141 and the top wall 142.

[0015] The wiring socket 150 is a hole formed by penetrating the ceiling wall 142 of the case 140, and in the first embodiment, has a circular planar shape. At least the conductive core wire 202 exposed from the insulating coating 201 at the end of the wiring 200 shown in Fig. 8 is inserted into the wiring socket 150. Further, at the back of the wiring socket 150, i.e., inside the case 140, there is provided a conductive terminal fitting 152 to which the core wire 202 of the wiring 200 inserted from the wiring socket 150 is connected.

[0016] The terminal fitting 152 is connected to electrical equipment. The terminal fitting 152 is made of a conductive and elastically deformable metal, and is formed in a flat plate shape. In the first embodiment, as shown in Figures 5, 9, and 10, a core wire-insertion hole 153 is formed in the terminal fitting 152, into which the core wire 202 of the wiring 200 is inserted to connect to the core wire 202. As shown in Figures 9 and 10, the core wire 202 of the wiring 200 is inserted into the core wire-insertion hole 153, and the terminal fitting 152 is connected to the core wire 202 of the wiring 200.

[0017] The longitudinal direction of the terminal fitting 152 intersects both the bottom wall 141 and the ceiling wall 142 and a direction perpendicular to the bottom wall 141 and the ceiling wall 142. One end of the terminal fitting 152 closer to the ceiling wall 142 is fixed to the case 140 or the like, and the other end closer to the bottom wall 141 is elastically deformable so that the distance from the bottom wall 141 can be changed. The terminal fitting 152 fixes the core wire 202 of the wiring 200 passed through the core wire-passing hole 153 in the core wire-passing hole 153 in the state shown in Figures 9 and 10 where no external force is acting on the other end and the terminal fitting 152 is not elastically deformed.

[0018] Earth port 151 has the same configuration as wiring inlet 150. Further, at the back of earth port 151, i.e., inside case 140, there is provided an earth terminal fitting (not shown) with the same configuration as terminal fitting 152. Note that the same parts of the earth terminal fitting as terminal fitting 152 will be described using the same wording. The core wire of the wiring to be earthed is passed through the core wire hole of the earth terminal fitting to connect and fix the core wire of the wiring to be earthed.

[0019] Release button 130 is a button for releasing wiring 200 from wiring socket 150. Release button 130 is housed in hole 144 that penetrates top wall 142 of case 140 and is supported so as to be slidable in a direction perpendicular to top wall 142. Release button 130 is slidable between a top dead center, where the top surface is flush with the surface of top wall 142, and a bottom dead center, where the top surface is closer to bottom wall 141 than the surface of top wall 142. Release button 130 is urged toward the top dead center by a urging means (not shown), and is restricted from moving away from bottom wall 141 beyond the top dead center, i.e., from protruding from the surface of top wall 142.

[0020] In addition, when the release button 130 slides from the top dead center toward the bottom dead center, its lower end abuts against the other end of the terminal fitting 152, pressing the other end of the terminal fitting 152 toward the bottom wall 141, thereby releasing the fixation of the core wire 202 of the wiring 200 within the core wire-passing hole 153.

[0021] (Wiring removal tool) The wire removal jig 1 is a jig that releases, i.e., removes, from the wire insertion port 150, wires 200 that have been inserted into the wire insertion port 150 and connected to the terminal block 100. As shown in FIGS. 1, 2, and 3, the wire removal jig 1 includes a wire holding portion 10, a handle 20, a wire clamping member 30, a link mechanism 40, and a pressing member 50.

[0022] The wiring holder 10 has a fulcrum 13, a first wiring holder 11 (corresponding to the first wiring holder), and a second wiring holder 12 (corresponding to the second wiring holder). The fulcrum 13 rotatably connects one end of the wiring holders 11 and 12 to each other. The center of rotation of the fulcrum 13 is parallel to a direction perpendicular to both surfaces of the wiring holders 11 and 12. In this way, the wiring holders 11 and 12 are connected to each other so as to be rotatable about the fulcrum 13.

[0023] The wiring holders 11 and 12 are formed in the shape of flat plates with the same external shape. The wiring holders 11 and 12 are formed so that their widths gradually narrow from one end to the other end, where they are rotatably connected to each other by a fulcrum 13. The wiring holders 11 and 12 are provided at their other ends with linear portions 111 and 121 that extend linearly and have a constant width.

[0024] The straight portions 111, 121 of each of the wire holding members 11, 12 are formed with notches 112, 122 that can accommodate the wires 200 that are inserted into the wire insertion ports 150 of the terminal block 100 and connected to the terminal block 100. The notches 112, 122 are open on the surfaces of the straight portions 111, 121 on the front side in Figures 1, 2, and 3. The wire holding members 11, 12 accommodate the wires 200 that are inserted into the wire insertion ports 150 of the terminal block 100 and connected to the terminal block 100 in the notches 112, 122, thereby holding the wires 200 that are inserted into the wire insertion ports 150 of the terminal block 100 and connected to the terminal block 100.

[0025] The handle 20 is disposed on the opposite side of the fulcrum 13 from the straight portions 111, 121 of the wire holding members 11, 12 of the wire holding part 10. The handle 20 has a first arm 21 and a second arm 22. The arms 21, 22 are formed in the same arm shape with the same external shape.

[0026] The first arm 21 has one end rotatably connected to one end of the first wiring holding member 11 by a cylindrical shaft 211, and the second arm 22 has one end rotatably connected to one end of the second wiring holding member 12 by a shaft 221. In the first embodiment, the first arm 21 has one end to which the cylindrical shaft 211 is fixed, and the shaft 211 is rotatably supported by one end of the first wiring holding member 11. In the first embodiment, the second arm 22 has one end to which the cylindrical shaft 221 is fixed, and the shaft 221 is rotatably supported by one end of the second wiring holding member 12.

[0027] The shafts 211, 221 that rotatably connect the arms 21, 22 and the wiring holding members 11, 12 are spaced apart from the fulcrum 13 in the width direction of the wiring holding members 11, 12. That is, the fulcrum 13 rotatably connects one end of each of the wiring holding members 11, 12 in the width direction, and the shafts 211, 221 are provided at the other end of each of the wiring holding members 11, 12 in the width direction.

[0028] The arms 21 and 22 are biased by a spring 23 in a direction that moves the other ends away from each other. The arms 21 and 22 are prevented from moving farther away from each other than the farthest position shown in FIG. 1 by stoppers (not shown) provided on the wire holding members 11 and 12, etc. The arms 21 and 22 are prevented from moving closer to each other than the position shown in FIG. 3 where the other ends are slightly closer to each other than the farthest position shown in FIG. 1 by stoppers (not shown) provided on the wire holding members 11 and 12, etc. For this reason, when the other ends of the arms 21 and 22 are brought closer to each other than the position where they are closest to each other, the wire holding members 11 and 12 rotate relative to each other around the fulcrum 13, as shown in FIG. 3, causing the linear portions 111 and 121 to move away from each other.

[0029] The wiring clamping member 30 is provided on the first wiring holding member 11. The wiring clamping member 30 is attached to the straight portion 111 of the first wiring holding member 11 so as to be slidable in the longitudinal direction of the straight portion 111. The wiring clamping member 30 has an insertion portion 31 that inserts into a notch 112 formed in the straight portion 111 of the first wiring holding member 11. The first arm 21 rotates around an axis 211 relative to the first wiring holding member 11 by the link mechanism 40, causing the wiring clamping member 30 to slide in the longitudinal direction of the straight portion 111.

[0030] In the first embodiment, when the wiring clamping member 30 is positioned at a position where the other ends of the arms 21 and 22 shown in Fig. 1 are furthest apart, the penetration portion 31 comes into contact with an inner surface 113 in the cutout 112 on the side farthest from the fulcrum 13, as shown in Fig. 1. In the first embodiment, when the wiring clamping member 30 is positioned at a position where the other ends of the arms 21 and 22 are brought closer to each other by rotating the first arm 21 about the axis 211 from a position where the other ends of the arms 21 and 22 are furthest apart, as shown in Fig. 1, the penetration portion 31 comes closer to an inner surface 114 in the cutout 112 closer to the fulcrum 13, as shown in Fig. 2.

[0031] 2, when the insertion portion 31 of the wire clamping member 30 approaches the inner surface 114 of the cutout 112 near the fulcrum 13, the wire 200 that has been inserted into the wire insertion port 150 of the terminal block 100 and connected to the terminal block 100 can be clamped between the insertion portion 31 and the inner surface 114 of the cutout 112. In this way, the wire clamping member 30 can clamp the wire 200 by rotating or moving the first arm 21 about the axis 211 relative to the first wire holding member 11.

[0032] The link mechanism 40 links the rotation of the first arm 21 about the axis 211 relative to the first wire holding member 11 with the sliding of the wire clamping member 30 along the longitudinal direction of the straight portion 111. When the other ends of the arms 21 and 22 shown in FIG. 1 are positioned at the farthest position from each other, the link mechanism 40 causes the insertion portion 31 to abut against the inner surface 114 of the cutout 112, as shown in FIG. 1. As the first arm 21 rotates about the axis 211 from the position where the other ends of the arms 21 and 22 shown in FIG. 1 are farthest from each other, the link mechanism 40 causes the insertion portion 31 of the wire clamping member 30 to approach the inner surface 114 of the cutout 112. The link mechanism 40 rotates relative to the first wiring holding member 11 around the axis 211 from the position shown in Figure 1, and when the other end of the first arm 21 approaches the other end of the second arm 22 as shown in Figure 2, the insertion portion 31 of the wiring clamping member 30 is positioned closer to the inner surface 114 of the cutout 112.

[0033] In the first embodiment, as shown in FIGS. 1 , 2 , and 3 , the link mechanism 40 is provided on the first wire holding member 11 and includes a first link 41 and a second link 42 that extend linearly. One end of the first link 41 is rotatably connected to a shaft 211, and the first link 41 rotates about the shaft 211 in conjunction with the rotation of the first arm 21 relative to the first wire holding member 11. The first link 41 rotates about the shaft 211 in a direction opposite to the rotation direction of the first arm 21 relative to the first wire holding member 11. For example, a thread groove that threads into the inner circumferential surface of a hole through which the shaft 211 of the first link 41 passes and the outer circumferential surface of the shaft 211 are formed, and the thread groove allows the first link 41 to rotate about the shaft 211 in a direction opposite to the rotation direction of the first arm 21 relative to the first wire holding member 11.

[0034] One end of the second link 42 is rotatably connected to the other end of the first link 41. In the first embodiment, the second link 42 has one end rotatably connected to the other end of the first link 41, with a cylindrical connecting pin 43 provided at one end being passed through an elongated hole 44 provided at the other end of the first link 41 and extending in the longitudinal direction of the first link 41. The other end of the second link 42 is connected to the wire clamping member 30.

[0035] 1, when the other ends of the arms 21, 22 shown in FIG. 1 are positioned at the farthest positions from each other, the link mechanism 40 positions the wire clamping member 30 at the position farthest from the fulcrum 13 and brings the insertion portion 31 into contact with the inner surface 114 of the cutout 112. When the first arm 21 rotates from the position shown in FIG. 1 around the axis 211 in a direction in which the other end approaches the other end of the second arm 22, the first link 41 rotates in the opposite direction to the first arm 21, and the first link 41 and the second link 42 move toward the fulcrum 13. When the first arm 21 is positioned at a position in which the other end approaches the other end of the second arm 22 shown in FIG. 2, the link mechanism 40 positions the wire clamping member 30 closest to the fulcrum 13 and brings the insertion portion 31 into contact with the inner surface 114 of the cutout 112.

[0036] In addition, when the other ends of the arms 21 and 22 of the wiring extraction jig 1 are pressed by the spring 23, the link mechanism 40, etc. in a direction in which the other ends approach each other from the position where the other ends are furthest apart as shown in Figure 1, the first arm 21 of the arms 21 and 22 rotates around the axis 211 before the second arm 22.

[0037] The pressing member 50 is provided on the second wiring holding member 12 and presses the release button 130. In the first embodiment, the pressing member 50 is attached to an end of the straight portion 121 of the second wiring holding member 12 closer to the fulcrum 13, and extends linearly from the straight portion 121 of the second wiring holding member 12 in a direction in which the straight portions 111, 121 of the wiring holding members 11, 12 move away from each other.

[0038] (How to pull out the wiring) Next, a method for extracting the wire 200 using the above-described wire extraction jig 1 will be described with reference to the drawings. Fig. 11 is a side view, partially in cross section, schematically showing a state in which a wire connected to a terminal block is passed through a cutout in the wire extraction jig. Fig. 12 is a side view, partially in cross section, schematically showing a state in which the first arm of the wire extraction jig shown in Fig. 11 is rotated so that the wire is clamped by the wire clamping member. Fig. 13 is a side view, partially in cross section, schematically showing a state in which the wire holding part is rotated around the fulcrum of the wire extraction jig shown in Fig. 12 so that the wire clamped by the wire clamping member is extracted from the core-wire-passing hole of the terminal fitting.

[0039] First, with the other ends of the arms 21, 22 furthest from each other and the insertion portion 31 of the wire clamping member 30 abutting against the inner surface 113, the wire 200 connected to the terminal block 100 is passed through the notches 112, 122, and the pressing member 50 is positioned above the release button 130, as shown in Fig. 11. Then, as shown in Fig. 12, the first arm 21 is rotated around the axis 211 relative to the first wire holding member 11 in a direction in which the other ends of the arms 21, 22 approach each other, and the wire 200 connected to the terminal block 100 is clamped between the inner surface 114 of the notch 112 and the wire clamping member 30.

[0040] 13, the other ends of the arms 21 and 22 are pressed in directions that bring them closer to each other, and the wire holding members 11 and 12 rotate about the fulcrum 13 in directions that move the straight portions 111 and 121 away from each other. Then, because the wire clamping member 30 clamps the wire 200 connected to the terminal block 100 between itself and the inner surface 114 of the notch 112, the straight portion 121 of the second wire holding member 12 approaches the terminal block 100, and the pressing member 50 presses the release button 130 toward the bottom wall 141 of the case 140.

[0041] Then, release button 130 presses the other end of terminal fitting 152 at the back of wire insertion port 150 toward bottom wall 141, and core wire 202 of wire 200 connected to terminal block 100 comes out from inside core wire passing hole 153 of terminal fitting 152. Thereafter, wire removal jig 1 is moved away from case 140, and wire 200 clamped between wire clamping member 30 and inner surface 114 of notch 112 is pulled out from wire insertion port 150.

[0042] As described above, the wire pulling jig 1 of embodiment 1 comprises a wire holding portion 10 having a first wire holding member 11 and a second wire holding member 12 rotatably connected by a fulcrum 13, a handle 20 having arms 21 and 22 rotatably connected to the wire holding members 11 and 12 around axes 211 and 221, a wire clamping member 30 provided on the first wire holding member 11 and clamping the wire 200 by moving the first arm 21, and a pressing member 50 provided on the second wire holding member 12 and pressing the release button 130 of the terminal block 100. For this reason, the wire removal jig 1 of embodiment 1 positions the pressing member 50 on the release button 130, and rotates the arms 21, 22 in a direction in which the other ends of the arms 21, 22 approach each other while the other ends of the arms 21, 22 are at their furthest apart, thereby clamping the wire 200 with the wire clamping member 30, and pressing the release button 130 with the pressing member 50 to release the wire 200 from the wire insertion port 150.

[0043] As a result, the wire extraction jig 1 according to the first embodiment has the effect of making it possible to easily extract the wire 200 from the terminal block 100.

[0044] The present invention is not limited to the above-described embodiment. That is, various modifications can be made without departing from the gist of the present invention. For example, in the present invention, the configuration of the link mechanism 40 is not limited to that described in the first embodiment. For example, a link mechanism that slides a cutting blade that cuts into the sheath portion 201 of the wiring 200 in conjunction with the rotation of the arm of a well-known wire stripper (for example, VESSEL (registered trademark) 3000A manufactured by VESSEL Kogyo Co., Ltd.) may be used as the link mechanism 40. [Explanation of symbols]

[0045] 1 Wiring removal tool 10 Wire holding part 11 First wiring holding member (first wiring holding portion) 12 Second wiring holding member (second wiring holding portion) 13 Fulcrum 20 Handle 21 First Arm 22 Second Arm 30 Wiring clamping member 50 Pressing member 100 terminal block 130 Release button 140 Case (Main Unit) 150 Wiring outlet 200 Wiring

Claims

[Claim 1] A wire removal tool for a terminal block having a main body, a plurality of wire insertion ports formed on the main body, and a release button for releasing wires from the wire insertion ports, the wires being inserted into the wire insertion ports and connected to the terminal block, the tool comprising: a wiring holding portion having a fulcrum and a first wiring holding portion and a second wiring holding portion that hold the wiring with the fulcrum as a center; a handle having a first arm and a second arm on the opposite side of the wire holding portion with respect to the fulcrum; a wire clamping member provided in the first wire holding portion and configured to clamp the wire by moving the first arm; At least a pressing member provided in the second wiring holding portion and configured to press the release button; Wire removal jig.

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