JP5909742B2 - Terminal block - Google Patents

Description

  The present invention relates to a terminal block that is used by being attached to a wall surface of a casing constituting an electric equipment storage box, and that can connect both an external wiring and an internal wiring.

  This type of terminal block connected on both sides is composed of a power supply side terminal portion disposed outside the housing and a load side terminal portion disposed inside the housing. It is a terminal block into which an electric wire can be inserted from the direction. Wiring from an external power supply or an external device arranged outside the housing is connected to the power supply side terminal portion, and wiring from an electrical device housed inside the housing is connected to the load side terminal portion. The

  In the conventional terminal block, as described in Patent Document 1, the terminal screw of one terminal block is screwed from the direction perpendicular to the terminal block mounting surface of the casing, and the terminal screw of the other terminal block is fixed to the casing. A structure in which screws are fixed to the terminal block mounting surface of the body from the horizontal direction is common. Further, as described in Patent Document 2, a structure in which terminal screws on both terminal blocks are screwed from a direction perpendicular to a terminal block mounting surface of a housing is common.

  Here, the housing to which the terminal block is attached is an IEC standard 1U unit (a unit designed to have a thickness of about 1.75 inches (about 44.5 mm) so that it can fit in one section of a 19-inch rack. ) And the like are described in FIG. FIG. 11A shows the terminal block 200 described in Patent Document 1, in which a terminal screw 700a in the housing is formed perpendicular to the terminal block mounting surface 100c, and FIG. The terminal block 300 described in the above is shown, and the terminal screw 700a in the housing is formed horizontally with respect to the terminal block mounting surface 100c.

  In the structure of the terminal block 300 in FIG. 11B, it is necessary to bend the electric wire 1000 when the electric wire 1000 is pulled out from the terminal screw 700a in the housing, and there is a problem that a load is applied to the electric wire 1000, and the terminal block 300 is attached to the terminal block mounting surface 100c. Since it is necessary to insert the tool 900 from the terminal block mounting surface 100c in the vertical direction in a state of being mounted on the screw, there is a problem that it is difficult to perform the screwing operation. In the structure of the terminal block 200 in FIG. 11A, the electric wire 1000 can be easily attached to the terminal screw 700a in the casing by removing the ceiling plate 100a of the thin casing 100. Is a structure that is pulled out in the horizontal direction with respect to the ceiling plate 100a, so that there is no bending load of the electric wire 1000. In addition, although the electric wire 1000 can be connected in the state which removed the terminal block 300 shown in FIG.11 (b) from the terminal block attachment surface 100c, in order to pull out the terminal block 300 from the terminal block attachment surface 100c, the electric wire 1000 is lengthened. After that, if the terminal block 300 is mounted on the terminal block mounting surface 100c, there is a problem that a storage space for the electric wire 1000 is required, or that the electric wire 1000 makes it difficult to mount the terminal block 300 on the terminal block mounting surface 100c. It is desirable to connect the wires with the terminal block attached to a thin casing.

  Further, FIG. 12 illustrates a case where the housing 800 having a size of 1U or more is formed and a plurality of terminal blocks are mounted side by side in the height direction. 12A shows the terminal block 200 described in Patent Document 1, and FIG. 12B shows the terminal block 300 described in Patent Document 2. In the structure of the terminal block 300 shown in FIG. 12B, the tool 900 can be inserted from the direction perpendicular to the terminal block mounting surface 800c and screwed to the terminal screw 700 even if a plurality of terminal blocks 300 are arranged. . However, in the structure of Patent Document 1, the terminal block 200 formed below the plurality of terminal blocks 200 cannot be screwed as shown in FIG. As described above, there is a problem in that the shape of the terminal block needs to be changed depending on the situation, and the number of products of the terminal block increases.

Japanese Utility Model Sho 64-38876 Akira Akira 64-7773

  The object of the present invention is to solve the above-mentioned problems. For example, even when the terminal block is attached to a thin housing, even when a plurality of terminal blocks are arranged side by side in the height direction of the housing, the attachment can be flexibly applied to any attachment location. It is to provide a compatible terminal block.

Terminal block of the present invention has been made to solve the above problems, so as to form the housing and out of the electro-device-accommodating box and the power supply side terminal portion of the load-side terminal portion, the terminal block mounting surface of the housing Is a terminal block that can be connected to both external wiring and internal wiring, and is formed between the power supply side terminal section, the load side terminal section, and both terminal sections. The substantially U-shaped terminal plate is composed of arm portions at both ends and a connecting portion for connecting the arm portions, and is used for connecting the wiring. The terminal hole into which the terminal screw to be inserted can be inserted is formed at three positions of both arm portions and the end portion of the connecting portion adjacent to one of the arm portions.

According to a second aspect of the invention, the terminal block according to claim 1, form the shape of the connecting portion in a crank shape, by shifting the arm portion of both the upper and lower place, an arm portion disposed on the lower side, The terminal hole is formed at the end of the connecting portion adjacent to the arm portion disposed on the lower side, and a partition for securing an insulation distance is provided at a position facing the tip portion of the arm portion disposed on the lower side. Is formed.

  According to a third aspect of the present invention, in the terminal block according to the second aspect, the distal end portion of the arm portion arranged on the lower side is brought into contact with the partition wall.

  According to a fourth aspect of the present invention, in the terminal block according to any one of the first to third aspects, the power supply side terminal portion is formed so that the appearance is vertically symmetrical.

  According to a fifth aspect of the present invention, in the terminal block according to any one of the first to fourth aspects, a plurality of unit terminals each having a single pole are arranged in parallel, and a fixing portion that connects adjacent unit terminals is provided as a housing. It is characterized by being arranged inside.

In the terminal block according to the present invention, a substantially U-shaped terminal plate is formed between the power supply side terminal portion and the load side terminal portion, and arm portions formed at both ends of the substantially U-shaped terminal plate; One terminal is formed by forming terminal holes at three positions of both the arm portions and the end portion of the connecting portion adjacent to either one of the connecting portions connecting the arm portions. By making the wiring direction selectable in either the horizontal or vertical direction in the section, it is possible to flexibly deal with any mounting location. Specifically, for example, when the casing to which the terminal block is attached is a thin casing that is stacked, the terminal screw of the power supply side terminal section is from the horizontal direction with respect to the mounting surface of the terminal block of the casing. In this case, it is easy to attach the wire to the terminal block by opening the ceiling plate of the thin casing in the terminal block of the structure, and the terminal is not loaded with the load. Can be formed on a table. Furthermore, even the structure to arrange the terminal block in height direction of the unit state, and are not able to attach the wires to insert the tool in the direction perpendicular to the mounting surface of the terminal base a structure as possible, It can be flexibly adapted to any mounting location.

  According to the second aspect of the present invention, the connecting portion is bent and formed in a crank shape, and both arm portions are arranged to be shifted up and down, and the arm portion disposed on the lower side and the lower portion are disposed on the lower side. Even if the terminal screw is screwed into the terminal hole formed in the connecting portion by forming the terminal hole at the end of the connecting portion adjacent to the arm portion, the head position of the terminal screw is adjusted. , The height of the upper portion of the arm portion arranged on the upper side can be suppressed. On the other hand, when the terminal screw is screwed into the terminal hole formed in the arm portion arranged on the lower side, the head position of the terminal screw is close to the housing wall surface facing the tip portion of the arm portion. Therefore, there is a possibility that the insulation distance cannot be ensured. However, in the invention according to claim 2, a partition for securing the insulation distance is formed at the tip of the arm portion arranged on the lower side and the position facing the tip. Thus, it is possible to ensure the insulation distance.

  According to the invention described in claim 3, the terminal screw is screwed into the terminal hole formed in the end portion of the connecting portion by bringing the tip of the arm portion arranged on the lower side into contact with the partition wall. In doing so, the load can be received by the partition wall to prevent the terminal plate from being deformed.

  When using the terminal hole formed in the arm part in both the power supply side terminal part and the load side terminal part, it is possible to use the terminal plate by rotating it depending on the direction of drawing out the electric wire. According to invention of claim | item 4, even if it is a case where a terminal board is rotated and used by forming a power supply side terminal part so that an external appearance may become symmetrical up and down, an external appearance does not change and it is in scenery. Can also be an excellent product.

According to claim 5 Symbol mounting of the invention, by disposing the fixing portion for connecting the adjacent unit terminals in the housing, of the terminal block, can reduce the portion protruding outward of the housing, the landscape Can also be an excellent product.

It is an external view of the electric equipment storage box which attached the terminal block of this invention. It is the whole terminal block perspective view seen from the power supply side terminal part side. It is the figure which looked at FIG. 2 from the load side terminal part side. FIG. 4 is a cross-sectional explanatory diagram of FIGS. 2 and 3. It is the figure which used the other terminal hole of the load side terminal part in FIG. It is a front view by the side of a power supply side terminal part. It is decomposition | disassembly explanatory drawing of the terminal block of this embodiment. It is explanatory drawing of other embodiment. It is explanatory drawing in other embodiment. It is explanatory drawing in other embodiment. It is explanatory drawing which showed the attachment structure of the conventional terminal block. It is explanatory drawing which showed the other attachment structure of the conventional terminal block.

  Preferred embodiments of the present invention are shown below. As shown in FIG. 1, the terminal block 1 of the present invention is used by being attached to the terminal block mounting surface 2a of the housing 2 constituting the electrical equipment storage box, and both the wiring from the outside and the wiring from the inside are used. As shown in FIGS. 2 and 3, the power supply side terminal portion 3 disposed outside the housing 2 and the load side terminal portion 4 disposed inside the housing 2 are provided. It is configured. The left and right end portions of the power supply side terminal portion 3 are provided with block-shaped attachment portions 5. Hereinafter, in the present embodiment, the load side terminal portion 4 is formed inside the housing 2 and the load name plate 15 can be disposed inside the housing 2. It is also possible to attach and form so as to protrude outside.

  As shown in FIGS. 4 and 5, a substantially U-shaped terminal plate 17 is passed between the power supply side terminal portion 3 and the load side terminal portion 4. The substantially U-shaped terminal plate 17 is composed of arm portions 6 formed at both ends and a connecting portion 7 that connects the arm portions 6, and both arm portions 6 and load side terminal portions of the connecting portion 7. Terminal holes 9 through which the terminal screws 8 are inserted are formed at three positions on the end portion of the connecting portion 7 adjacent to the arm portion 6 of 4. FIG. 4 is a state diagram in which a terminal screw 8 is inserted into a terminal hole 9 formed in an end portion of the connecting portion 7 adjacent to the arm portion 6 of the load side terminal portion 4, and FIG. 5 is an arm portion of the load side terminal portion 4. The state figure which inserted the terminal screw 8 in the terminal hole 9 formed in 6 is shown. In each case of FIGS. 4 and 5, the name plate mounting portion 16 is formed at a position adjacent to each terminal hole 9 so that the arrangement position of the load name plate 15 can be changed.

  In this way, by making the wiring direction in the load side terminal portion 4 selectable in either the horizontal or vertical direction, it is possible to flexibly deal with any mounting location. Note that the two terminal holes 9 formed in the load side terminal portion 4 are connected to the other terminal hole 9 by a terminal screw 8 screwed from the terminal hole 9 on the use side when one is used. The terminal screws 8 are formed in close proximity so that they cannot be used.

  In this embodiment, as shown in FIGS. 4 and 5, the connecting portion 7 is bent and formed in a crank shape, and the arm portion 6 of the load side terminal portion 4 is shifted downward from the arm portion 6 of the power source side terminal portion 3. Arranged. According to the structure, as shown in FIG. 4, even when the terminal screw 8 is screwed into the terminal hole 9 formed in the end portion of the connecting portion 7 adjacent to the arm portion 6 of the load side terminal portion 4. Since the position of the head of the terminal screw 8 can be suppressed to the height of the upper part of the arm portion 6 of the power supply side terminal portion 3, the distance between the head of the terminal screw 8 and the housing 2 can be increased. Insulation distance can be ensured.

  On the other hand, when the terminal screw 8 is screwed into the terminal hole 9 formed in the arm 6 of the load side terminal 4, the head of the terminal screw 8 and the tip of the arm 6 are close to the housing 2. However, in this embodiment, the partition wall 10 for securing the insulation distance is formed at a position facing the tip of the arm portion 6 disposed below the load side terminal portion 4. . By forming a partition wall 10 for securing an insulation distance between the distal end portion of the arm portion 6 disposed below the load side terminal portion 4 and the housing 2 facing the distal end portion, the insulation distance can be ensured. Can be secured.

  Further, the partition wall 10 receives the load when the terminal screw 8 is screwed into the terminal hole 9 formed at the end portion of the connecting portion 7 adjacent to the arm portion 6 of the load side terminal portion 4 and deforms the terminal plate 17. It also has a function to prevent this.

  4 and 5, when the partition wall 10 is configured to cover all of the space between the wall surfaces 18, the electric wire cannot be drawn downward in the direction of the partition wall 10. When pulling down, there is a risk that the wire will be loaded. Therefore, as another embodiment, as in other embodiments shown in FIGS. 8 to 10, the load-side terminal portion 4 is provided by providing a notch portion 19 that enables wiring of a wire in a part of the partition wall 10. Wiring from both the upper and lower directions can be made possible.

  In the structure of FIGS. 4-6, when using the terminal hole 9 formed in the arm part 6 by both the power supply side terminal part 3 and the load side terminal part 4, depending on the drawing-out direction of an electric wire, the terminal block 1 is attached. It is also possible to use it by rotating it. Therefore, in the present embodiment, as shown in FIG. 6, even when the power supply side terminal portion 3 is formed so that the appearance is vertically and horizontally symmetrical and the terminal block 1 is rotated and used, It can be used without changing. Since the name plate mounting portion 16 into which the load name plate 15 can be inserted is formed in the vertical direction of the terminal hole 9 of the power supply side terminal portion 3, the position of the load name plate 15 can be changed according to the rotation. Forming.

  As shown in FIG. 7, the terminal block 1 of the present embodiment can be divided into one pole and one pole, and has a structure in which the number of poles can be freely changed and expanded. The terminal board 17 is held by the left and right wall surfaces 18 so as not to fall, and is not screwed or the like. In this embodiment, each pole is coupled by screwing at a fixing portion 11 formed so as to penetrate the load side terminal portion 4, and the fixing portion 11 is disposed inside the housing. As another embodiment, the fixing portion 11 can be formed on the power supply side terminal portion 3. In the case where the fixing portion 11 is formed on the load side terminal portion 4, it is possible to reduce the portion of the terminal block 1 that protrudes to the outside of the housing 2, and to make the product excellent in landscape. In any case, since the fixing portion 11 is disposed adjacent to the end of the opening for insertion into the terminal block 1 of the housing 2 constituting the electric device storage box, it is attached to the housing 2. In this state, disassembly using a tool is difficult.

  In addition, in the present embodiment, since the head of the terminal screw 8 and the terminal plate 17 are exposed in the power supply side terminal portion 3 protruding to the outside of the housing 2 constituting the electrical equipment storage box, As shown in FIGS. 2 and 3, a U-shaped transparent cover 12 is attached at a position covering the head of the terminal screw 8. The transparent cover 12 is locked by a recess 13 formed at the tip of the inner surface of the mounting portion 5. The shape of the transparent cover 12 is not limited to that shown in FIGS. 2 and 3. For example, as shown in FIG. 9, as shown in FIG. In addition, the charging part can be protected. In this embodiment, as shown in FIG. 2 and FIG. 9, the nut insertion portion 14 for screwing the L-shaped transparent cover 12 is formed at a symmetrical position in the vertical and horizontal directions of the mounting portion 5. The structure can be changed freely.

  Further, as shown in FIG. 5, when the hook portions 16 a and 16 b are formed at the opening end portion of the name plate attachment portion 16, and a cover that is shorter in the vertical direction than the transparent cover 12 is formed, the power supply side terminal portion 3. The cover can be locked by the concave portion 13a and the hook portion 16b on the upper side, or the cover can be locked by the concave portion 13b and the hook portion 16a on the lower side of the power supply side terminal portion 3, so that the transparent cover can be selected. .

DESCRIPTION OF SYMBOLS 1 Terminal block 2 Housing | casing 2a Terminal block attachment surface 3 Power supply side terminal part 4 Load side terminal part 5 Attachment part 6 Arm part 7 Connection part 8 Terminal screw 9 Terminal hole 10 Bulkhead 11 Fixing part 12 Transparent cover 13 Recessed part 14 Nut insertion part 15 Load name plate 16 Name plate mounting portion 17 Terminal plate 18 Wall surface 19 Notch portion 100 Thin casing 100a Ceiling plate 100b Bottom plate 100c Terminal block mounting surface 200 Terminal block 300 Terminal block 400 Terminal plate 500 Terminal plate 600 Transparent cover 700 Terminal Screw 700a Terminal screw 800 in housing 800 Housing 800c Terminal block mounting surface 900 Tool 1000 Electric wire

Claims (5)

Used to penetrate and attach to the terminal block mounting surface of the housing so as to form the power supply side terminal portion and the load side terminal portion inside and outside the housing constituting the electrical equipment storage box. A terminal block that can connect both of the wiring
A power-side terminal portion, a load-side terminal portion, and a substantially U-shaped terminal plate formed between the both terminal portions, the substantially U-shaped terminal plate comprising: It consists of a connecting part that connects the arms,
Terminal holes into which terminal screws used for connecting wires can be inserted are formed at three positions, both arm portions and the end portions of the connecting portions adjacent to one of the arm portions. Terminal block. Form forms the connection part in a crank shape, by shifting the arm portion of both the upper and lower place, an arm portion disposed in the lower end of the connecting portion adjacent to the arm portion disposed on the lower side The terminal block according to claim 1, wherein the terminal hole is formed in a portion, and a partition wall for securing an insulation distance is formed at a position facing a tip portion of an arm portion disposed on the lower side.   The terminal block according to claim 2, wherein the distal end portion of the arm portion disposed on the lower side is in contact with the partition wall.   The terminal block according to any one of claims 1 to 3, wherein the power supply side terminal portion is formed so as to have a vertically symmetrical appearance.   5. The terminal block according to any one of claims 1 to 4, wherein a plurality of unit terminals each having one pole are arranged in parallel, and a fixing portion that connects adjacent unit terminals is disposed inside the housing. Terminal block.

Images