Terminal strip

Abstract

To solve the problem in which: wiring work using a screw-type terminal strip requires a large number of low-voltage circuits, which increases working hours and increases the time of load power outage.SOLUTION: A terminal strip according to an embodiment is a terminal strip for wiring comprises: a stationary conductor that is brought into contact with a ring-shaped round terminal provided at the tip of a conducting wire to be connected to establish conductivity; a moving conductor that is provided paired with the stationary conductor and sandwiches the round terminal with the stationary conductor; a moving conductor urging part that presses the moving conductor toward the stationary conductor; and a stationary part that, when the round terminal is inserted between the stationary conductor and the moving conductor, rotates in an insertion direction when brought into contact with the round terminal, and penetrates through the ring-shaped part of the round terminal upon completion of the insertion to prevent the round terminal from coming off from the terminal strip.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION An embodiment of the present invention relates to a terminal block. [Background technology]

[0002] When connecting external lines to an electrical panel during on-site work on electrical equipment, the main It is a low-voltage wiring such as wiring for circuits, control lines, etc.

[0003] Conventionally, such wiring connection work involves attaching terminals such as crimp terminals or compression terminals to the cable. Generally, the wiring is done by manually connecting each wire one by one. Terminal blocks are used for the wiring work. However, this terminal block is a screw-type terminal block that secures the wiring terminals with screws. This is often the case.

[0004] A screw-type terminal block is a terminal block that uses screws to secure the terminals to be installed. When using a terminal block, use a bare crimp terminal (hereinafter simply called a round terminal) that has a mounting hole for screw fixing. When installing the bracket, first remove the screw with a screwdriver. Repeat the process of removing the terminal, installing the ring terminal, and tightening the screw to secure the ring terminal. This will happen.

[0005] In addition, you can use a rod terminal to perform wiring work by inserting the rod terminal. Terminal blocks for this purpose may also be used.

[0006] In addition, Patent Document 1 discloses a method for fixing a pressure plate to a rod having a knob portion and connecting the pressure plate. A coil spring is attached to the metal fitting side, and when the terminal is inserted between the pressing plate and the connecting metal fitting, the coil The terminal block is biased by a spring, and the terminals are connected and disconnected with a single touch via the knob of the rod. It has been disclosed. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 9-161868 Summary of the Invention [Problem to be solved by the invention]

[0008] When using the screw-type terminal block described above for wiring work, there are many low-voltage wirings. This increases the working time and the duration of the load interruption. Because this work requires electrical wiring, there are many cases of electric shock due to sneak current from control lines.

[0009] If wire connection work is done using a rod terminal, it is possible to reduce the above-mentioned risks. If the wire is pulled even slightly, it will come out of the terminal block, which makes it difficult to work with.

[0010] In addition, the terminal block disclosed in Patent Document 1 requires only one touch when attaching the terminal. However, when removing the terminals, you can pinch the small knobs one by one with your fingers and pull them out. This also poses a problem in terms of workability. [Means for solving the problem]

[0011] In order to solve the above problem, the terminal block according to the embodiment is a terminal block for connection, a fixed conductor that is in contact with a ring-shaped round terminal provided at the tip of the conductor, and conducts electricity; a moving conductor that is provided as a pair with the body and that sandwiches the round terminal between the moving conductor and the fixed conductor; a moving conductor biasing portion that presses the body toward the fixed conductor; When the round terminal is inserted between the terminals, it rotates in the insertion direction when it comes into contact with the round terminal. When the fitting is completed, a fixing portion penetrates the ring-shaped portion of the round terminal to prevent the round terminal from coming off. It is equipped with: [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic view of a terminal block according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the terminal block insertion portion taken along line AA′ according to the first embodiment. [Figure 3] 2 is a cross-sectional view taken along line AA′ when a round terminal is inserted into a terminal block insertion portion according to the first embodiment. FIG. [Figure 4] 2 is a cross-sectional view taken along line AA′ after the round terminal is inserted into the terminal block insertion portion according to the first embodiment. FIG. [Figure 5] 2 is a cross-sectional view taken along the line AA′ when the round terminal is being pulled out from the terminal block insertion portion according to the first embodiment. FIG. [Figure 6] FIG. 2 is a front view of a link mechanism in the terminal block insertion portion according to the first embodiment. [Figure 7] FIG. 2 is a top view of a link mechanism in the terminal block insertion portion according to the first embodiment. [Figure 8] FIG. 4 is a schematic view showing a state in which a fixing portion of the terminal block insertion portion according to the first embodiment penetrates a ring-shaped portion. [Figure 9] 3A and 3B are a front view and a side view of a fixed shaft spring provided in a fixing portion of a terminal block insertion portion according to the first embodiment. [Figure 10] 3A and 3B are a front view and a side view of a movable shaft spring provided in a link mechanism in a terminal block insertion portion according to the first embodiment; [Figure 11] FIG. 10 is a schematic view of a terminal block according to a second embodiment. [Figure 12] FIG. 8 is a BB′ cross-sectional view of the terminal block insertion portion according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.

[0014] (First embodiment) FIG. 1 is a schematic diagram of the terminal block according to the first embodiment, and FIG. FIG. 2 shows a cross-sectional view taken along the line AA′, and FIG. FIG. 3 shows a cross-sectional view taken along the line AA′, and FIG. 4 shows a state after the round terminal is inserted into the terminal block insertion portion according to the first embodiment. FIG. 4 shows a cross-sectional view of the terminal block taken along line AA′, and FIG. 5 is a cross-sectional view taken along line AA′ of the terminal block insertion portion according to the first embodiment; 6 is a top view of the link mechanism in the terminal block insertion portion according to the first embodiment, and FIG. 1 is a schematic diagram showing a state in which a fixing portion of a terminal block insertion portion according to one embodiment penetrates a ring-shaped portion. FIG. 8 shows a schematic diagram of the fixed shaft spring provided in the fixed portion of the terminal block insertion portion according to the first embodiment. 9 shows a front view and a side view of the terminal block insertion portion according to the first embodiment. FIG. 10 shows a front view and a side view of the fixed shaft spring provided in the.

[0015] The terminal block 10 according to this embodiment is a terminal block for connection, and as shown in FIG. A plurality of insertion portions 20 into which round terminals 11, which are ring-shaped round terminals provided at the ends of conductors, are inserted. Each of the insertion parts 20 has a removal button 12 and an insertion port 13. When the round terminal 11 is inserted into the insertion portion 20, the round terminal 11 is prevented from coming out of the insertion portion 20. Wiring work can be completed easily.

[0016] Furthermore, when the round terminal 11 is to be pulled out, a pull-out button is provided to transmit the external force pressed by the operator's finger. By pressing down the round terminal 12, the round terminal 11 fixed inside the insertion portion 20 is released. This allows the round terminal 11 to be easily pulled out.

[0017] Next, details of the insertion portion 20 will be described with reference to FIG.

[0018] 2 shows a cross section of the insertion portion 20 taken along line AA'. The fixed conductor 21 is a conductor that is electrically connected by bringing the round terminal 11 into close contact with the fixed conductor 21. A moving conductor 22 for sandwiching the conductor 21 and a moving force for pressing the moving conductor 22 toward the fixed conductor 21. A compression spring 23, which is a moving conductor biasing portion, and a link mechanism 30 are provided.

[0019] The fixed conductor 21 is fixed inside the insertion part 20. It is made of a conductive metal. Therefore, a metal with high conductivity such as copper or aluminum is preferable. 13) is provided with a structure for guiding the round terminal 11, for example, as shown in FIG. , and the round terminal 11 is extended obliquely toward the socket 13 at any position of the socket 13. Even if the round terminal 11 is inserted, it is possible to guide it to a predetermined position.

[0020] The moving conductor 22 is installed so as to be able to slide along the inner bottom surface of the insertion portion 20. The moving conductor 22 is paired with the fixed conductor 21, and a compression spring 2 is attached to the opposite side of the fixed conductor 21. The moving conductor 22 is arranged at the natural length of the compression spring 23. This position is set so that the distance between the fixed conductor 21 and the moving conductor 22 is narrower than the thickness of the round terminal 11. The natural length of the compression spring 23 is determined based on this position. When the round terminal 11 is inserted, the moving conductor 22 is pushed out (the compression spring 23 is compressed). This is because the spring reaction force from the compression spring 23 is received by the spring.

[0021] Similarly to the fixed conductor 21, the moving conductor 22 is made of a conductive metal, and is made of copper. Metals with high conductivity such as aluminum are preferable. 13) also has a structure for guiding the round terminal 11. For example, as shown in FIG. The round terminal 11 extends obliquely toward the socket 13, and the round terminal 11 can be inserted at any position of the socket 13. Even if the round terminal 11 is inserted in a wrong direction, it is possible to guide the round terminal 11 to a predetermined position.

[0022] The compression spring 23 is provided on the moving conductor 22 as described above, and is compressed from its natural length. When the movable conductor 22 is pressed down, a force acts on the movable conductor 22 toward the fixed conductor 21. The moving conductor 22 is pressed toward the fixed conductor 21 by the compression spring 23, so that the round The terminal 11 is tightly attached to the fixed conductor 21 and the moving conductor 22, preventing poor contact. .

[0023] Next, the movement of each part when the round terminal 11 is inserted will be explained with reference to FIGS. 3 to 10. This will be explained while giving details of 0.

[0024] First, the round terminal 11 is inserted into the socket 13. The round terminal 11 is guided along the fixed conductor 21 while pushing the moving conductor 22 apart (compressing) The spring 23 is compressed as it is inserted.

[0025] As the round terminal 11 is inserted, the fixed portion 3 of the link mechanism 30 moves from a predetermined insertion position. After the contact, the round terminal 11 is further inserted as shown in FIG. 9, the fixing portion 31 is pressed against the round terminal 11 while receiving a reaction force from the fixing shaft spring 41. The connector rotates downward, which is the insertion direction.

[0026] When the round terminal 11 is completely inserted to the bottom of the insertion portion 20, as shown in FIG. 31 is returned to its original position by the reaction force of the fixed shaft spring 41. This is as shown in FIG. The fixing part 31 is fitted into the inner diameter of the ring-shaped part 14 of the round terminal 11. Therefore, the fixed portion 31 prevents the round terminal 11 from coming off. The compression spring 23 always presses the fixed conductor 21 side, The adhesion between the terminal 11 and the fixed conductor 21 and the movable conductor 22 is maintained in a high state. Thus, the connection of the ring terminal 11 to the terminal block 10 is completed.

[0027] To confirm the completion of insertion of the round terminal 11, an insertion confirmation mechanism (not shown) is used. The insertion confirmation mechanism may be, for example, a part that operates in conjunction with the completion of insertion of the round terminal 11. A member is provided in the insertion portion 20, and the completion of insertion can be visually confirmed by the operation of the member. In addition, by providing a viewing window at the position where the round terminal 11 is fully inserted, Alternatively, the round terminal 11 itself may be made directly visible.

[0028] When removing the round terminal 11 from the terminal block 10, press the removal button 12 as shown in FIG. By lowering the terminal, the link mechanism 30 operates, and the fixing portion 31 is released from the round terminal 11. This allows the mold terminal 11 to be easily pulled out.

[0029] The link mechanism 30 will now be described in detail with reference to FIGS.

[0030] The link mechanism 30 includes a fixing portion 31 for fixing the round terminal 11 and a first connecting portion 32 for connecting the fixing portion 31. The link 39 has a moving member 32 and a support portion 39a that supports the first moving member 32. The mechanism 30 has a movable part 34. The movable part 34 rotates around a movable shaft 37. The first moving member 32 and the second moving member 38 are connected via the It is tied.

[0031] First, the part of the link mechanism 30 that operates when the round terminal 11 is inserted will be described. .

[0032] The fixed portion 31 is formed by connecting two rectangular parallelepiped members via a fixed shaft 33. Width of the fixed portion 31 The distance between the two rectangular parallelepipeds is the inner diameter of the ring-shaped portion 14 (the hatched portion in FIG. 2) of the round terminal 11. 8, and is fitted into the inner diameter of the ring-shaped portion 14 of the round terminal 11. 7, the fixed shaft 33 has a width that is equal to the width of the first moving member 32. The two rectangular parallelepipeds of the fixed part 31 are disposed so as to sandwich the first moving member 32 through the round holes. can be.

[0033] Furthermore, the fixed shaft 33 is provided with a fixed shaft spring 41, which is a fixed portion biasing body as shown in FIG. As shown in FIG. 9, the winding is installed in such a way that the fixed shaft 33 passes through the winding. The rest of the part is buried inside the fixed part 31 and the first moving member 32. The structure of the fixed axis spring 41 is not limited to the structure of this embodiment, and the shape of the fixed portion 31 and the fixed portion 41 may be changed. This can be changed as appropriate depending on the shape of the fixed axis spring 41.

[0034] When the round terminal 11 is inserted into the socket 13, the fixing portion 31 moves downward (inverted) around the fixing shaft 33. At this time, the fixed part 31 is returned to its original position by the fixed shaft spring 41. The fixed shaft is subjected to the spring reaction force of the fixed shaft spring 41. The fixing portion 31 rotates counterclockwise, and when the insertion of the round terminal 11 is completed, the fixing portion 31 The terminal 11 is fitted into the inner diameter of the ring-shaped portion 14 by the spring reaction force of the fixed shaft spring 41. The round terminal 11 returns to its original position to prevent it from coming out. When the fixed portion 31 is not in the horizontal position, the fixed portion 31 is maintained horizontal by the fixed shaft spring 41.

[0035] Next, in the link mechanism 30, when the round terminal 11 is pulled out by pressing the pull-out button 12, This section explains the parts that operate in this manner.

[0036] First, the support portion 39a is fixed inside the insertion portion 20. Then, the top of the support portion 39a The first moving member 32 is slidably placed on the surface. The slide guide 39c is provided in the first portion 39a and has a round hole through which the movable shaft 37 passes. The first moving member 32 is restricted from moving upward (toward the insertion port 13) so that the first moving member 32 is held horizontally. Here, horizontal means the direction in which the pull-out button 12 is pressed. It is in the direction.

[0037] The first moving member 32 is fixed at one end via a fixed shaft 33 which is the center of rotation of the fixed part 31. The other end is connected to the movable part 34 via a slide shaft 36a. It moves horizontally in conjunction with the rotation.

[0038] The removal button 12 is provided on the outer surface of the housing of the insertion part 20. As shown in FIG. The push button 12 is connected to a second moving member 38, which is a pull button. It works in conjunction with Tan 12.

[0039] The movable part 34 is made up of two rectangular parallelepiped members connected via a movable shaft 37. The first moving member has elongated holes 35a and 35b symmetrically provided around the movable shaft 37. The slide shaft 36a and the slide shaft 36b are provided at the tip of the second moving member 32 and the tip of the second moving member 38, respectively. The movable shaft 37 is configured to slide in the slots 35a and 35b. As shown in FIG. 7, two straight rods of the movable part 34 are inserted through the round holes of the movable shaft support part 39b. The rectangular bodies are arranged so as to sandwich the first moving member 32, the second moving member 38, and the movable shaft support portion 39b. It will be installed.

[0040] In the link mechanism 30, the pull-out button 12 is pressed to pull out the round terminal 11. The parts that perform this function are configured as described above, and the operation of each component will now be described.

[0041] When the removal button 12 is pressed, the removal button 12 moves in conjunction with the removal button 12. The second moving member 38 moves toward the round terminal 11 by the amount of movement of the second moving member 38. As the moving member 38 moves, the slide shaft 36b moves while sliding within the elongated hole 35b. As a result, the movable part 34 rotates clockwise around the movable shaft 37. The slide shaft 36a moves while sliding within the long hole 35a, and the first The first moving member 32 moves toward the pull-out button 12. The first moving member 32 moves toward the support portion 39a. The vertical movement is restricted by the slide guide 39c, so that the pull-out button 12 The moving direction is opposite to the pressing direction.

[0042] The fixed portion 31 is connected to the first moving member 32, and therefore moves in conjunction with the movement of the first moving member 32. The fixing portion 31 is also pulled out from the ring-shaped portion 14 of the round terminal 11 (pull-out button 12 The round terminal 11 moves in the opposite direction to the pressing direction, and the round terminal 11 can be easily pulled out.

[0043] As described above, when the pull-out button 12 is pressed, the series of operations of the link mechanism 30 as described above are performed. , the fixing portion 31 is pulled out from the ring-shaped portion 14 of the round terminal 11, and the round terminal 11 is It is possible to pull out the terminal 11. In addition, the pull-out button 11 can be easily pressed. The operation is very simple, and multiple pull-out buttons 12 are pressed simultaneously to remove multiple round terminals 1. It is also possible to pull out both at the same time.

[0044] Furthermore, the movable shaft 37 is provided with a movable shaft spring 42, which is a movable part biasing body as shown in FIG. As shown in FIG. 10, the winding is installed in such a way that the movable shaft 37 passes through the winding. The rest of the wire is buried inside the movable part 34 and the movable shaft support part 39b. The structure of the movable shaft spring 42 is not limited to the structure of this embodiment, and the shape of the movable portion 34 and the shape of the movable shaft spring 42 can be changed as appropriate.

[0045] When the movable part 34 rotates clockwise around the movable shaft 37, the movable part 34 is 42 generates a spring reaction force that tries to return to the original position. When the pressing of the button 12 is stopped, the movable part 34 returns to its original position by the spring reaction force of the movable shaft spring 42. In order to return to the original position, the first moving member 32 and the second moving member 38 also return to the original position in conjunction with the movable portion 34. Furthermore, the fixed portion connected to the first moving member 32 and the second moving member 38 31 and the pull-out button 12 also return to their original positions.

[0046] As described above, according to this embodiment, even wiring work involving many wires can be performed with one touch. This reduces the work time. In addition, since there is no direct contact with the terminals, there is no risk of electric shock. Furthermore, when removing the round terminal, it is very easy to press it. It is possible to remove multiple round terminals at the same time with simple work, improving workability.

[0047] (Second embodiment) A schematic diagram of a terminal block 50 according to the second embodiment is shown in FIG. A BB' cross-sectional view of the insertion portion is shown in FIG. 12. The terminal block 50 according to the second embodiment has a structure The terminal block 50 according to this embodiment is partially different from that of the first embodiment. 1, the same configuration as the terminal block 10 according to the first embodiment will be described. The same reference numerals as in the first embodiment are used, and the explanation will be omitted.

[0048] The terminal block 50 according to this embodiment has a first screw 51 as shown in FIG. The terminal block 10 according to the embodiment is different from the terminal block 10 according to the embodiment. In addition to the pressure of the spring 23, the moving conductor 22 is further pressed toward the fixed conductor 21. After inserting the round terminal 11, the moving conductor 22 is held in place by the compression spring 23. Although the round terminal 11 is pressed against the terminal, the spring force of the compression spring 23 is weakened. If the adhesion between the round terminal 11 and the fixed conductor 21 and the movable conductor 22 is weak due to the If you feel it, use the tightening screw 51.

[0049] The tightening screw 51 penetrates the housing of the insertion part 20 and the tip thereof is in contact with the moving conductor 22. In FIG. 12, the tightening screw 51 is provided separately from the compression spring 23. It may also be configured so that it penetrates the center of the wire 23 and is formed as a single unit.

[0050] The tightening screw 51 is cylindrical and has a tip on the side opposite to the tip that is in contact with the moving conductor 22. The end of the screw is threaded, and the movement can be adjusted by turning the tightening screw 51 clockwise. The conductor 22 can be pressed against the fixed conductor 21 .

[0051] As described above, according to this embodiment, the contact between the round terminal 11 and the fixed conductor 21 and the movable conductor 22 is If the material is weak and the conductivity is poor, the conductivity can be improved by using the tightening screw 51. It becomes possible.

[0052] Although several embodiments of the present invention have been described, these embodiments are presented by way of example only. These novel embodiments are not intended to limit the scope of the invention. The present invention can be embodied in various forms, and various modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are within the scope and spirit of the invention. This invention is intended to cover the scope of the present invention, as well as the scope of the claims and their equivalents. [Explanation of symbols]

[0053] 10... Terminal block according to the first embodiment, 11... Round terminal, 12... Pull-out button, 13... Insertion Opening, 14... ring-shaped portion, 20... insertion portion, 21... fixed conductor, 22... moving conductor, 23... compression spring , 30... link mechanism, 31... fixed portion, 32... first moving member, 33... fixed shaft, 34... movable portion, 35a, 35b...long holes, 36a, 36b...slide shaft, 37...movable shaft, 38...second Moving member, 39a... support portion, 39b... movable shaft support portion, 39c... slide guide, 41... fixed Fixed axis spring, 42... movable axis spring, 50... terminal block according to the second embodiment, 51... tightening screw

Claims

1. A terminal block for wiring, a fixed conductor that comes into contact with a ring-shaped round terminal provided at the tip of the conductor to be connected, thereby providing electrical continuity; a moving conductor that is provided as a pair with the fixed conductor and that sandwiches the round terminal between the moving conductor and the fixed conductor; a moving conductor biasing portion that presses the moving conductor toward the fixed conductor; When the round terminal is inserted between the fixed conductor and the moving conductor, the When the insertion is complete, the ring-shaped portion of the round terminal is penetrated and the round terminal is inserted. A fixing part that prevents the terminal from coming off; A terminal block comprising:

2. A pull-out button for the round terminal provided on the outer surface of the terminal block; a second lever connected to the pull-out button and moving in the pushing direction when the pull-out button is pushed; a moving member; The second moving member is connected to the slide shaft, and moves in accordance with the movement of the second moving member. A rotating movable part; One end is connected to the fixed part via a fixed shaft that is the center of rotation of the fixed part, and the other end is a first slide member that is connected to the movable portion via the slide shaft and moves in conjunction with the rotation of the movable portion; a moving member; The terminal block of claim 1 further comprising:

3. A movable member that generates a reaction force to return the movable member to its original position when the movable member rotates. Part biasing body, The terminal block of claim 2 further comprising:

4. A fixing device that generates a reaction force to return the fixing part to its original position when the fixing part rotates. Part biasing body, The terminal block of claim 2 further comprising:

5. In addition to the pressing of the moving conductor biasing portion, the moving conductor is pressed toward the fixed conductor. You can tighten the screws, The terminal block according to claim 1 or 2, further comprising:

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