JP2021125284A - Terminal block and terminal block system - Google Patents

Abstract

To provide a terminal block and a terminal block system which have a plurality of insertion ports into which wires can be inserted, can facilitate insertion work for insertion into the insertion ports, and, when a plurality of wires have been inserted, can suppress interference between wires.SOLUTION: A terminal block 1 includes a housing 10 that has a plurality of insertion ports 100, and a holding member 11 that holds terminals having been inserted into the insertion ports 100. The plurality of insertion ports 100 are arranged to be alternately staggered along two parallel virtual straight lines over the same surface of the housing 10. For each insertion port 100, the housing 10 also has an auxiliary port 102 into which a tool for releasing the hold of the holding member 11 can be inserted.SELECTED DRAWING: Figure 1

Description

The present invention relates to a terminal block having an insertion port into which a wire rod such as a cable can be inserted, and a terminal block system including such a terminal block.

Terminal blocks are used to connect various wire rods such as power lines and signal lines in electrical equipment such as switchboards, machine tools, and PV (photovoltaics) equipment. For example, as shown in Patent Document 1, the applicant of the present application has invented a push-in type terminal block in which a cable can be attached by simply inserting the cable into the insertion slot.

Japanese Patent No. 6418183

For a terminal block as described in Patent Document 1, there is a requirement for ease of insertion when the cable is inserted into the insertion slot. Further, there is a demand for suppressing interference between cables that occurs when a plurality of cables are inserted into the terminal block.

The present invention has been made in view of such circumstances, and it is possible to facilitate the insertion work for insertion into the insertion slot, and when a plurality of wires such as cables are inserted, interference between the wires The main purpose is to provide a terminal block that can suppress the above.

Another object of the present invention is to provide a terminal block system provided with such a terminal block.

In order to solve the above problems, the terminal block described in the present application is a terminal block having a housing in which a plurality of insertion ports into which wire rods can be inserted are provided, and a holding member for holding the wire rods inserted into the insertion ports is provided. The plurality of insertion openings are alternately arranged in a staggered manner along two parallel virtual straight lines on the same surface of the housing, and the housing is released from being held by the holding member. An auxiliary port into which a jig can be inserted is provided for each insertion port.

Further, in the terminal block described in the present application, the auxiliary ports are alternately arranged in a staggered manner so that the corresponding insertion ports are located on the virtual straight line side opposite to the virtual straight line along the terminal block.

Further, in the terminal block described in the present application, at least one of the inside and the edge portion of the insertion port is characterized in that the color is different from the surface of the housing around the insertion port.

Further, in the terminal block described in the present application, the edge portion of the insertion port is characterized in that it protrudes or is depressed from the surface of the housing around the insertion port.

Further, in the terminal block described in the present application, the insertion port is an outlet of an optical path in the housing through which light emitted from a light source passes.

Further, in the terminal block described in the present application, the housing is provided with a plurality of incident ports serving as inlets for light emitted from the light source in association with the insertion ports, and the holding member is provided from the incident ports. It is characterized by having a reflecting surface that reflects the incident light toward the insertion port.

Further, in the terminal block described in the present application, the holding member is characterized by having a reflecting surface that reflects light incident from the incident port toward the auxiliary port.

Further, the terminal block system described in the present application includes the terminal block and an illuminating device attached to the terminal block to irradiate light, so that the illuminating device can irradiate light toward the incident port of the terminal block. It is characterized by being provided with a mounting and maintaining mechanism that maintains the mounted state.

Further, in the terminal block system described in the present application, the terminal block or the illumination device is provided with a regulation mechanism for regulating the mounting position and direction so as to be a predetermined position and direction.

In the terminal block and the terminal block system described in the present application, a plurality of insertion ports are alternately arranged in a staggered pattern.

In the terminal block and the terminal block system according to the present invention, a plurality of insertion ports are alternately arranged in a staggered manner so as to follow two parallel virtual straight lines on the same surface of the housing. Therefore, the terminal block and the terminal block system according to the present invention can facilitate the insertion work when inserting the wire rod into the insertion port, for example, and can suppress the interference between the inserted wire rods. It produces various effects such as being possible.

It is a schematic perspective view which shows an example of the appearance of the terminal block described in this application. It is a schematic plan view which shows an example of the appearance of the terminal block described in this application. It is the schematic sectional drawing which shows an example of the internal structure of the terminal block described in this application. It is a schematic perspective view which shows an example of the appearance of the holding member provided in the terminal block described in this application. It is schematic cross-sectional view which shows an example of the holding member provided in the terminal block described in this application. It is a schematic perspective view which shows an example of the appearance of the illumination device which can be attached to the terminal block described in this application. It is a schematic perspective view which shows an example of the state which attached the illumination device to the terminal block described in this application. It is a schematic perspective view which conceptually shows an example of the internal structure in the state which attached the illumination device to the terminal block described in this application. It is a circuit diagram which shows an example of the internal circuit of the illumination device which can be attached to the terminal block described in this application. It is the schematic plan view which shows the part of the terminal block described in this application enlarged and schematically. It is the schematic cross-sectional view which shows typically an example of the internal structure of the terminal block described in this application. It is the schematic plan view which shows the part of the terminal block described in this application enlarged and schematically. It is the schematic cross-sectional view which shows typically an example of the internal structure of the terminal block described in this application. It is the schematic plan view which shows the part of the terminal block described in this application enlarged and schematically. It is the schematic cross-sectional view which shows typically an example of the internal structure of the terminal block described in this application. It is a schematic perspective view which shows an example of the appearance of the terminal block described in this application. It is a schematic plan view which shows an example of the appearance of the terminal block described in this application. It is a schematic perspective view which shows an example of the appearance of the terminal block described in this application. It is a schematic plan view which shows an example of the appearance of the terminal block described in this application. It is a schematic plan view which shows an example of the appearance of the terminal block described in this application.

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

<Application example>
The terminal block described in the present application can be used for various purposes such as a terminal block to which various wires such as power lines and signal lines can be attached and detached in electrical equipment such as switchboards, machine tools, and PV equipment. As a specific configuration of the wire rod, various wire rods such as a ferrule terminal and a cable with a peeled outer skin can be exemplified. Then, the terminal block described in the present application constitutes a terminal block system in combination with an illumination device. Hereinafter, the terminal block 1 illustrated in the drawings will be described with reference to the drawings.

<Configuration example>
<First Embodiment>
FIG. 1 is a schematic perspective view showing an example of the appearance of the terminal block 1 described in the present application, and FIG. 2 is a schematic plan view showing an example of the appearance of the terminal block 1 described in the present application. In the following description, the direction of the terminal block 1 is expressed with the upper side as the upper side, the lower side as the lower side, the front left side as the front side (front side), and the back side as the rear side toward the terminal block 1 illustrated in FIG. However, this is a direction for convenience of explanation, and does not limit the direction when the terminal block 1 is used.

The terminal block 1 described in the present application includes a housing 10 having a substantially rectangular parallelepiped shape. The housing 10 is made of a material having a color such as black. Six circular insertion ports 100 into which wire rods can be inserted are provided on the upper surface of the housing 10. The centers of the six insertion openings 100 are alternately staggered along two parallel virtual straight lines extending to the left and right on the upper surface of the housing 10. In FIG. 2, two virtual straight lines are shown by alternate long and short dash lines. As illustrated in FIG. 2, the plurality of insertion openings 100 are alternately arranged in a staggered manner along two parallel virtual straight lines on the same surface of the housing 10. The edge portion of the insertion port 100 is formed as a protruding portion 101 protruding from the surface of the housing 10 around the insertion port 100, and the inside of the protruding portion 101 and the insertion port 100 is different from the surface of the housing 10. It is a color. For example, when the surface of the housing 10 is black, the inside of the protrusion 101 and the insertion port 100 is a color such as yellow or white that is easily distinguishable from black. Coloring of various members such as black and yellow is carried out by forming using a resin material of a required color, but it is carried out by various methods such as coloring the surface after molding the resin material. Can be done. In the drawings of the present application, the colored portion is shown by cross-hatching. Further, since the inside of the insertion port 100 becomes an optical path as described later, it may be colored in silver, which easily reflects light, or may be mirror-finished.

On the upper surface of the housing 10, an auxiliary port 102 into which a jig such as a flat-blade screwdriver for releasing the holding by the holding member 11 can be inserted is provided for each insertion port 100. The auxiliary ports 102 are alternately arranged in a staggered manner so that the corresponding insertion ports 100 are located on the virtual straight line side opposite to the virtual straight line along the line. In the terminal block 1 illustrated in FIGS. 1 and 2, the auxiliary ports 102 are alternately arranged in a staggered manner so as to be located on the rear side or the front side of the corresponding insertion port 100. As illustrated in FIGS. 1 and 2, in the terminal block 1 described in the present application, units in which the insertion port 100 and the auxiliary port 102 are opened are arranged so as to be connected to the left and right while exchanging the front and back. It should be noted that the terminal block 1 is not configured as a form in which the units in which the insertion port 100 and the auxiliary port 102 are opened are connected to each other, but the housing 10 illustrated in FIGS. 1 and 2 may be integrally molded. It is possible. For example, by connecting a plurality of units, the expandability of the terminal block 1 becomes high, and by integrally molding the housing 10, it is possible to aim at cost reduction.

On the front surface and the back surface of the housing 10, an incident port 103 serving as an inlet of light emitted from an external light source such as an illumination device 2 (see FIG. 4 or the like) described later is provided for each insertion port 100. The incident port 103 is arranged on the side surface on the side where the corresponding insertion port 100 is arranged. Specifically, the incident port 103 corresponding to the insertion port 100 opened along the virtual straight line on the front side is opened on the front side of the housing 10, and is inserted along the virtual straight line on the rear side. The incident port 103 corresponding to the port 100 is provided on the back side of the housing 10. The incident port 103 is connected to the insertion port 100 and the auxiliary port 102 inside the housing 10, and the light incident from the incident port 103 passes through the optical path inside the housing 10 and passes through the insertion port 100 or the auxiliary port 102. Emit from. That is, the insertion port 100 serves as an outlet for an optical path inside the housing 10 through which the light emitted from the light source passes.

From the lower surface of the housing 10, connection terminals 110 for electrically connecting the wire rod fixed and held to the substrate to the circuit on the substrate are arranged in the front-rear direction. The connection terminals 110 are arranged on the left and right of each unit in which the insertion port 100 and the auxiliary port 102 are opened. The connection terminal 110 is integrated with the holding member 11 (see FIG. 3 and the like) housed in the housing 10 by a processing method such as caulking.

As described above, since the insertion ports 100 are staggered in the terminal block 1, interference between the wirings inserted in the adjacent insertion ports 100 can be suppressed, so that the distance between the insertion ports 100 is narrowed. It is possible to realize miniaturization as a whole. For example, when the units in which the insertion ports 100 and the auxiliary ports 102 are opened are arranged alternately so that the insertion ports 100 and the auxiliary ports 102 are arranged in a staggered arrangement, and when they are arranged so as to be in the same direction. In comparison with the above, in the staggered arrangement, even if the size of the unit itself is the same, the distance between the adjacent insertion openings 100 is longer. For example, in the case of a unit in which the distance between the center lines of adjacent units is 2.54 mm and the distance between the insertion port 100 and the auxiliary port 102 is 2.54 mm, the distance between the adjacent insertion ports 100 is the same. Is 2.54 mm, whereas in the staggered arrangement, the distance between the adjacent insertion openings 100 can be expanded to 3.5 mm. By increasing the distance between the adjacent insertion ports 100 in this way, it is possible to expect effects such as facilitation of the wire rod insertion work and suppression of interference between the wire rods.

FIG. 3 is a schematic cross-sectional view showing an example of the internal structure of the terminal block 1 described in the present application. FIG. 3 shows a cross section cut along a vertical plane including the AB line segment shown in the terminal block 1 illustrated in FIG. The inside of the housing 10 of the terminal block 1 is a cavity used as an optical path. A partition portion 104 is formed in the vicinity of the opening between the insertion port 100 and the auxiliary port 102 provided on the upper surface of the housing 10, but is connected inside the housing 10. The incident port 103 provided on the front surface or the back surface of the housing 10 is also connected to the insertion port 100 and the auxiliary port 102 inside the housing 10. Inside the housing 10, a holding member 11 for holding the wire rod inserted from the insertion port 100 is housed. The lower portion of the holding member 11 projects outward from the lower surface of the housing 10 as a connection terminal 110. The holding member 11 has an urging portion 111 that urges the wire rod inserted from the insertion port 100 to be held. The urging portion 111 is formed with a first reflecting surface 111a that reflects the light incident from the incident port 103 toward the insertion port 100 side and a second reflecting surface 111b that reflects the light incident toward the auxiliary port 102 side. ..

FIG. 4 is a schematic perspective view showing an example of the appearance of the holding member 11 included in the terminal block 1 described in the present application, and FIG. 5 is a schematic cross-sectional view showing an example of the holding member 11 included in the terminal block 1 described in the present application. be. FIG. 5 is shown as a cross-sectional view in which a part is cut in a vertical plane in order to show the shape of the urging portion 111 of the holding member 11. The holding member 11 housed in the housing 10 of the terminal block 1 will be further described. The holding member 11 is formed into a predetermined shape by performing processing such as punching and bending on a conductive metal plate. The lower portion of the holding member 11 has a connection terminal 110 extending in the front-rear direction fixed to the upper portion of the holding member 11 by a processing method such as caulking. In the holding member 11, above the connection terminal 110, the upper surface and a part of the side surface are formed in a substantially tubular shape so as to cover the optical path inside the housing 10. In the holding member 11, the side surface of the holding member 11 on the side facing the incident port 103 is formed together with the urging portion 111 as a holding portion 112 for sandwiching the inserted wire rod. The sandwiching portion 112 is provided with a circular passing port 112a for passing light emitted through the incident port 103. The urging portion 111 is a metal piece that is bent diagonally downward from the upper part of the side surface opposite to the incident port 103 toward the holding portion 112 side, and the metal piece that extends diagonally downward from the bent portion is incident by elasticity. It functions as a spring such as a leaf spring or a bow spring that urges the mouth 103 side. The urging portion 111 is a portion located below the partition portion 104 of the housing 10, and is molded so that the angle changes. The tip side below the position where the angle changes becomes the first reflecting surface 111a, and the angle changes. The root side above the position is the second reflecting surface 111b.

FIG. 6 is a schematic perspective view showing an example of the appearance of the illumination device 2 that can be attached to the terminal block 1 described in the present application. The illumination device 2 is a device that can be attached to the terminal block 1 as an external light source, and by attaching to the terminal block 1, it irradiates light toward the incident port 103 provided in the housing 10 of the terminal block 1. .. The illumination device 2 includes an illumination unit 20 including a light emitting unit 202 such as an LED (Light Emitting Diode), and a switching unit 21 wiredly connected to the illumination unit 20. In the drawings of the present application, some wiring for electrically connecting the illumination unit 20 and the switching unit 21 is omitted.

The illumination unit 20 includes two arm portions 200 forming a square columnar shape in which a plurality of light emitting portions 202 are incorporated on the side surfaces, and a connecting portion 201 for connecting one ends of the two arm portions 200 to each other, as a whole. , It is formed in a substantially U-shape (approximately U-shape). The illumination unit 20 can be attached to the terminal block 1 by sandwiching the terminal block 1 between the arm portions 200. In order to improve workability when sandwiched by the arm portion 200, the illumination unit 20 can separate the connecting portion 201 back and forth and divide it into two halves. The light emitting portion 202 of the illumination unit 20 is arranged at a position facing the other arm portion 200 side so as to irradiate the incident port 103 of the terminal block 1 when sandwiched between the two arm portions 200. The thickness (length in the front-rear direction) of the arm portion 200 of the illumination unit 20 is preferably configured to be as thin as possible in order to avoid interference with surrounding parts after mounting the terminal block 1 on the substrate.

The changeover unit 21 includes a power supply switch 210 and a changeover switch 211. The power switch 210 is a switch that opens and closes an energization circuit that energizes the light emitting unit 202. The changeover switch 211 is a switch for selecting a light emitting unit 202 to be energized, and FIG. 6 illustrates a mode in which a rotary switch is used.

FIG. 7 is a schematic perspective view showing an example of a state in which the illumination device 2 is attached to the terminal block 1 described in the present application, and FIG. 8 is an internal structure of the state in which the illumination device 2 is attached to the terminal block 1 described in the present application. It is a schematic perspective view which shows an example conceptually. FIG. 8 shows a part of the internal structure disassembled and transmitted through from the state shown in FIG. 7 so that the internal structure can be visually recognized. As illustrated in FIGS. 7 and 8, the illuminating device 2 is attached to the terminal block 1 by abutting the arm portion 200 of the illuminating unit 20 with the front and back surfaces of the terminal block 1 and sandwiching it from the front and back. .. The arm portion 200 incorporates a fixing plate 203 for fixing the light emitting portion 202. The wiring that is electrically connected to the switching unit 21 and the light emitting unit 202 that is connected to the wiring are fixed to the fixing plate 203. When the illuminating device 2 is attached to the terminal block 1, the light emitting unit 202 incorporated in the arm portion 200 of the illuminating device 2 is arranged at a position capable of irradiating light toward the incident port 103 of the terminal block 1.

A fixed shaft 204 is attached to one half of the connecting portion 201 of the illuminating unit 20 included in the illuminating device 2 for positioning when connecting the separated halves, and the fixed shaft 204 is attached to the other half. A first recess 205 that can be inserted is formed. Further, in order to fix the illumination device 2 to the terminal block 1, a permanent magnet 206 such as a neodymium magnet is incorporated in one half of the connecting portion 201 of the illumination device 2, and a permanent magnet 206 is inserted in the other half. A possible second recess 207 is formed.

When the illumination device 2 is attached to the terminal block 1, first, the illumination unit 20 of the illumination device 2 is separated by the connecting portion 201. The light emitting unit 202 incorporated in the separated front half body arm 200 faces the incident port 103 provided on the front surface of the terminal block 1, and the light emitting unit incorporated in the rear half body arm 200 faces the incident port 103. The half body of the illumination device 2 is brought into contact with the terminal block 1 from the front and back so that 202 faces the incident port 103 provided on the back surface of the terminal block 1. Then, the fixed shaft 204 and the permanent magnet 206 of the rear half of the illumination device 2 are inserted into the first recess 205 and the second recess 207 of the front half, respectively. Further, the illumination unit 20 of the illumination device 2 can be attached to the terminal block 1 by fixing it to the iron plate 105 or the like incorporated in the side surface of the terminal block 1 by the magnetic force of the permanent magnet 206 incorporated in the illumination device 2. .. With the illumination unit 20 of the illumination device 2 attached to the terminal block 1, the user operates the power switch 210 and the changeover switch 211 of the changeover unit 21 to light an arbitrary light emitting unit 202 of the illumination unit 20. Then, the light is irradiated toward the incident port 103 of the terminal block 1. The iron plate 105 incorporated in the terminal block 1 and the permanent magnet 206 incorporated in the illuminating device 2 are attached to maintain a state in which the illuminating device 2 is attached so as to be able to irradiate light toward the incident port 103 of the terminal block 1. Functions as a maintenance mechanism. The mounting / maintaining mechanism for maintaining the positioning and fixing state of the terminal block 1 and the illuminating device 2 is not limited to the iron plate 105 and the permanent magnet 206, but also various fitting holes for fitting the ball plunger and the ball plunger. It is possible to use a mechanism.

FIG. 9 is a circuit diagram showing an example of an internal circuit of the illumination device 2 that can be attached to the terminal block 1 described in the present application. In FIG. 9, the internal circuit of the illumination device 2 is simplified and shown as an equivalent circuit. The illumination device 2 includes a plurality of light emitting units 202 using light emitting elements such as LEDs, a power switch 210, a changeover switch 211, a power supply, and the like. The circuit opens and closes by accepting an operation on the power switch 210. By accepting the switching operation for the changeover switch 211 in the on state with the circuit closed, one selected light emitting unit 202 emits light.

Next, a state when the illumination device 2 is attached to the terminal block 1 described in the present application and a wire rod is inserted will be described. FIG. 10 is a schematic plan view schematically showing an enlarged part of the terminal block 1 described in the present application, and FIG. 11 is a schematic cross-sectional view schematically showing an example of the internal structure of the terminal block 1 described in the present application. Is. 10 and 11 schematically show a state in which a wire rod is inserted into the insertion port 100 of the terminal block 1. FIG. 10 shows a part of the terminal block 1 from above. In FIG. 10, the illumination device 2 and the wire rod are omitted so that the state of the terminal block 1 can be easily grasped. Further, in FIGS. 10 and 11, the irradiation direction of the light and the state of being irradiated are shown by pointillism. FIG. 11 shows a state in which the illumination device 2 is attached to the terminal block 1 and light is irradiated from the illumination device 2. Note that FIG. 11 shows a state in which the tip of the wire rod has entered the insertion port 100 so that the insertion location of the wire rod can be easily grasped. As shown by the pointillized arrows in FIG. 11, the light emitted from the light emitting portion 202 of the illuminating device 2 is incident from the incident port 103 of the terminal block 1 and passes through the passing port 112a of the holding member 11 to the urging portion 111. It is reflected by the first reflecting surface 111a of the above and is emitted from the insertion port 100. By adjusting the angle θ1 formed by the incident light and the first reflecting surface 111a to an angle such as 45 degrees in a state where the wire is not sandwiched, the reflection angle is such that the light is emitted from the insertion port 100. Can be adjusted. The operator recognizes the terminal block 1 in the state illustrated in FIG. 10 when inserting the wire rod. The insertion port 100 of the terminal block 1 when inserting the wire rod has a protruding portion 101 which is an edge portion, and the color is different from the surroundings, and the inside of the insertion port 100 into which the wire rod is to be inserted is shining. Therefore, it is easy for the operator to visually and tactilely identify the position of the insertion port 100 into which the wire rod is to be inserted, and the operator can perform accurate work even in a narrow place, a dark place, or other places where the work environment is poor. It will be possible.

FIG. 12 is a schematic plan view schematically showing an enlarged part of the terminal block 1 described in the present application, and FIG. 13 is a schematic cross-sectional view schematically showing an example of the internal structure of the terminal block 1 described in the present application. Is. Note that FIG. 12 corresponds to FIG. 10, and FIG. 13 corresponds to FIG. 12 and 13 schematically show a state in which a wire rod is inserted into the insertion port 100 of the terminal block 1 and the tip of the wire rod begins to press the urging portion 111 of the holding member 11. As shown in FIGS. 12 and 13, when the tip of the wire rod starts pressing the urging portion 111 of the holding member 11, the angle of the urging portion 111 changes, so that the illuminance of the light visually recognized from the insertion port 100 is It is suppressed.

FIG. 14 is a schematic plan view schematically showing an enlarged part of the terminal block 1 described in the present application, and FIG. 15 is a schematic cross-sectional view schematically showing an example of the internal structure of the terminal block 1 described in the present application. Is. Note that FIG. 14 corresponds to FIGS. 10 and 12, and FIG. 15 corresponds to FIGS. 11 and 13. 14 and 15 schematically show a state in which the wire rod is substantially completely inserted into the insertion port 100 of the terminal block 1 and the wire rod presses the urging portion 111 of the holding member 11. As shown in FIGS. 14 and 15, when the wire rod is inserted, the wire rod presses the urging portion 111 and the urging portion 111 bends. The repulsive force of the bent urging portion 111 pushes the wire rod toward the holding portion 112 side of the holding member 11. In this state, the wire rod is sandwiched between the urging portion 111 and the sandwiching portion 112, and is held in the terminal block 1. In a state where the wire rod is held by the holding member 11 in the terminal block 1, the wire rod is electrically connected to the connection terminal 110. Further, as shown by the pointillistic arrows in FIG. 15, the light emitted from the light emitting unit 202 of the illumination device 2 is incident from the incident port 103 of the terminal block 1 and passes through the passing port 112a of the holding member 11. It is reflected by the urging unit 111. The reflection angle is adjusted by adjusting the angle θ2 formed by the incident light and the second reflecting surface 111b of the urging portion 111 to an angle such as 45 degrees while the wire is bent and sandwiched. Then, the incident light can be adjusted so as to be reflected by the second reflecting surface 111b and emitted from the auxiliary port 102. When the inserted wire is pulled out from the insertion port 100, the operator inserts a jig such as a flat-blade screwdriver into the auxiliary port 102, further presses the urging portion 111, and releases the holding by the holding member 11. I do. An operator who wants to pull out the inserted wire rod will recognize the terminal block 1 in the state illustrated in FIG. 14 when inserting the jig. The inside of the auxiliary port 102 of the terminal block 1 when the jig is inserted is in a state of being illuminated by the light reflected by the second reflecting surface 111b of the urging portion 111. Therefore, the operator can easily visually identify the position of the auxiliary port 102 into which the jig should be inserted, and can perform accurate work even in a narrow place, a dark place, or other places where the work environment is poor. It becomes.

As described above, in the terminal block 1 described in the present application, the insertion ports 100 are alternately arranged in a staggered manner along two parallel virtual straight lines on the upper surface of the housing 10. As a result, the terminal block 1 described in the present application has excellent effects such as being able to facilitate the insertion work into the insertion port 100. Further, the terminal block 1 described in the present application has excellent effects such as being able to suppress interference between wirings inserted into adjacent insertion ports 100. Therefore, since the size of the terminal block 1 as a whole can be reduced while maintaining a substantial distance between the insertion ports 100, it is possible to aim at the miniaturization of the terminal block 1 and obtain excellent effects. ..

Further, in the terminal block 1 described in the present application, the edge portion of the insertion port 100 is formed as a protruding portion 101 protruding from the surface of the housing 10 around the insertion port 100, and the inside of the protruding portion 101 and the insertion port 100 is formed. It is colored in a color different from the surface of the housing 10. As a result, the terminal block 1 described in the present application can make the insertion port 100 stand out. Therefore, the operator who inserts the wire rod into the insertion port 100 of the terminal block 1 can specify the position of the insertion port 100 by touch and sight, so that the occurrence of work mistakes can be suppressed and accurate work can be performed. It has excellent effects such as being possible. Such an effect becomes more remarkable as the number of terminal blocks 1 has a large number of poles.

Further, the terminal block 1 described in the present application has an insertion port for inserting a wire rod by reflecting the light emitted from the illuminating device 2 by the urging portion 111 of the holding member 11 by attaching the illuminating device 2 described in the present application. It is possible to illuminate the 100 or the auxiliary port 102 into which the jig is inserted. As a result, the terminal block 1 described in the present application can make the insertion port 100 or the auxiliary port 102 stand out. Therefore, since the operator can visually identify the position of the insertion port 100 or the auxiliary port 102, it is possible to suppress the occurrence of work mistakes and perform accurate work even in a dark place. It has an excellent effect.

Moreover, in the terminal block 1 described in the present application, since the angle of the urging portion 111 is different between the first reflecting surface 111a and the second reflecting surface 111b, the reflection direction can be changed according to the bending angle of the urging portion 111. It is possible. As a result, in the terminal block 1 described in the present application, the insertion port 100 into which the wire rod is inserted shines when the wire rod is not inserted, and the auxiliary port 102 into which the jig is inserted shines when the wire rod is inserted. Since it shines, the insertion port 100 or the auxiliary port 102 to be worked on can be made to stand out. Therefore, since the operator can visually identify the position of the insertion port 100 or the auxiliary port 102 to be worked on, it is possible to suppress the occurrence of work mistakes and perform accurate work even in a dark place. It has excellent effects such as being possible.

Further, in the terminal block 1 described in the present application, the light emitting unit 202 that emits light from the attached illumination device 2 can be switched by the switching unit 21. As a result, the terminal block 1 described in the present application illuminates only the insertion port 100 or the auxiliary port 102 to be worked on among the plurality of inserted insertion ports 100 and auxiliary ports 102, and the insertion port 100 to be worked on. Alternatively, only the auxiliary port 102 can be made to stand out. Therefore, since the operator can visually identify the position of the insertion port 100 or the auxiliary port 102 to be worked on, it is possible to suppress the occurrence of work mistakes and perform accurate work even in a dark place. It has excellent effects such as being possible.

<Second Embodiment>
FIG. 16 is a schematic perspective view showing an example of the appearance of the terminal block 1 described in the present application, and FIG. 17 is a schematic plan view showing an example of the appearance of the terminal block 1 described in the present application. The terminal block 1 according to the second embodiment is a form in which the illumination device 2 is not used in the first embodiment. Since the illumination device 2 is not used, the housing 10 of the terminal block 1 is not provided with an incident port 103 that serves as an inlet for light from the outside. Therefore, the insertion port 100 and the auxiliary port 102 do not shine. However, the edge portion of the insertion port 100 of the terminal block 1 according to the second embodiment is formed as a protruding portion 101 protruding from the surface of the housing 10 around the insertion port 100, and the protruding portion 101 and the insertion port 100. The inside of the housing 10 is colored differently from the surface of the housing 10. As a result, the terminal block 1 according to the second embodiment can make the insertion port 100 stand out. Moreover, in the terminal block 1 according to the second embodiment, the insertion ports 100 are alternately arranged in a staggered manner along two parallel virtual straight lines on the upper surface of the housing 10. As a result, the terminal block 1 according to the second embodiment has excellent effects such that the terminal block 1 described in the present application can facilitate the insertion work into the insertion port 100. Further, the terminal block 1 described in the present application has excellent effects such as being able to suppress interference between wirings inserted into adjacent insertion ports 100.

<Third Embodiment>
FIG. 18 is a schematic perspective view showing an example of the appearance of the terminal block 1 described in the present application, and FIG. 19 is a schematic plan view showing an example of the appearance of the terminal block 1 described in the present application. In the second embodiment, the terminal block 1 according to the third embodiment has a similar color to the entire housing 10. However, the edge portion of the insertion port 100 of the terminal block 1 according to the third embodiment is formed as a protruding portion 101 protruding from the surface of the housing 10 around the insertion port 100. As a result, the terminal block 1 according to the third embodiment can make the insertion port 100 stand out. Moreover, in the terminal block 1 according to the third embodiment, the insertion ports 100 are alternately arranged in a staggered manner along two parallel virtual straight lines on the upper surface of the housing 10. As a result, the terminal block 1 according to the third embodiment has excellent effects such that the terminal block 1 described in the present application can facilitate the insertion work into the insertion port 100. Further, the terminal block 1 described in the present application has excellent effects such as being able to suppress interference between wirings inserted into adjacent insertion ports 100.

<Fourth Embodiment>
FIG. 20 is a schematic plan view showing an example of the appearance of the terminal block 1 described in the present application. The terminal block 1 according to the fourth embodiment is a form in which the side portions of the housing 10 of the terminal block 1 have different lengths on the left and right in the first embodiment. In the terminal block 1 according to the third embodiment, the length of the right end portion 10a of the housing 10 in the left-right direction is half the length of the left end portion 10b. The difference between the length of the left end portion 10b and the length of the right end portion 10a is about ½ of the pitch (arrangement interval) of the insertion port 100. By configuring as illustrated in the fourth embodiment, when the direction in which the illuminating device 2 is attached to the terminal block 1 is wrong in the left-right direction, the incident port 103 of the terminal block 1 and the light emitting unit 202 of the illuminating device 2 are used. Since the position of and is shifted by 1/2 pitch, the illumination function does not work, and the operator can notice the erroneous operation. That is, the right end portion 10a and the left end portion 10b of the housing 10 function as a regulation mechanism that regulates the mounting positions and directions of the terminal block 1 and the illumination device 2 so as to be predetermined positions and directions. As illustrated in FIG. 20, the regulation mechanism can be provided as various shapes and mechanisms regardless of the asymmetrical shape such as the length of the terminal block 1 in the mounting direction. It is also possible to provide a regulation mechanism on the illumination device 2 side.

The present invention is not limited to the respective embodiments described above, and can be implemented in various other embodiments. Therefore, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. The technical scope of the present invention is described by claims and is not bound by the text of the specification. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

For example, in the above-described embodiment, the auxiliary ports 102 are alternately arranged in a staggered pattern so as to be located on the virtual straight line side opposite to the virtual straight line along which the corresponding insertion port 100 is aligned. Is not limited to this. For example, all the auxiliary ports 102 may be arranged along one virtual straight line, or all the auxiliary ports 102 may be arranged on the same side with respect to the corresponding insertion port 100. Is.

Further, for example, in the above-described embodiment, the urging portion 111 is changed in angle on the way to form the first reflecting surface 111a and the second reflecting surface 111b, but the present invention is not limited to this. For example, only the portion to be reflected on the insertion port 100 side corresponding to the first reflecting surface 111a may be mirror-finished, and the portion corresponding to the second reflecting surface 111b may be subjected to antiglare processing to suppress reflection. In this case, only the insertion port 100 side is illuminated, but the degree of freedom in designing the shape of the urging portion 111 can be increased.

Further, for example, in the above embodiment, an external light source is used to irradiate the inside of the housing 10 of the terminal block 1, but the present invention is not limited to this, and the light source is arranged inside the housing 10. It is possible to develop it in various forms such as.

Further, for example, in the above-described embodiment, the edge portion of the insertion port 100 of the housing 10 is set as the projecting portion 101, but the present invention is not limited to this, and various irregularities such as denting the edge portion are formed. It can be attached to make it stand out. That is, the edge portion of the insertion port 100 may be projected or depressed as compared with the periphery outside the edge portion of the insertion port 100. Further, the shape of the protrusion or depression may be formed as a stepped step as illustrated in FIG. 12, but is a stepless straight line such as a conical protrusion or a mortar-shaped depression. It may be formed as a convex or curved protrusion or depression.

1 Terminal block 10 Housing 10a Right end (regulatory mechanism)
10b Left end (regulatory mechanism)
100 Insertion port 101 Protruding part 102 Auxiliary port 103 Incident port 104 Partition part 105 Iron plate (mounting maintenance mechanism)
11 Holding member 110 Connection terminal 111 Biasing part 111a First reflecting surface 111b Second reflecting surface 112 Holding part 112a Passing port 2 Illuminating device 20 Illuminating unit 202 Light emitting part 206 Permanent magnet (connection maintenance mechanism)
21 Changeover unit 211 Changeover switch

Claims (9)

A terminal block having a housing with multiple insertion ports into which wires can be inserted.
A holding member for holding the wire inserted into the insertion port is provided.
The plurality of insertion ports are alternately arranged in a staggered manner along two parallel virtual straight lines on the same surface of the housing.
The housing is a terminal block characterized in that an auxiliary port into which a jig for releasing a jig held by the holding member can be inserted is provided for each insertion port. The terminal block according to claim 1.
The auxiliary port is
A terminal block characterized in that the corresponding insertion openings are alternately arranged in a staggered manner so as to be located on the side of the virtual straight line opposite to the virtual straight line along the line. The terminal block according to claim 1 or 2.
A terminal block characterized in that at least one of the inside and the edge of the insertion slot has a color different from that of the housing surface around the insertion slot. The terminal block according to any one of claims 1 to 3.
A terminal block characterized in that the edge portion of the insertion port protrudes or is depressed from the surface of the housing around the insertion port. The terminal block according to any one of claims 1 to 4.
The insertion port is a terminal block characterized by serving as an outlet of an optical path in the housing through which light emitted from a light source passes. The terminal block according to claim 5.
The housing is
A plurality of incident ports, which serve as entrances for light emitted from a light source, are provided in association with the insertion ports.
The holding member is a terminal block having a reflecting surface that reflects light incident from the incident port toward the insertion port. Reflection to the auxiliary port The terminal block according to claim 6.
The holding member is
A terminal block having a reflecting surface that reflects light incident from the incident port toward the auxiliary port. The terminal block according to claim 6 or 7.
It is equipped with an illumination device that is attached to the terminal block to irradiate light.
A terminal block system comprising a mounting and maintenance mechanism for maintaining a state in which the illuminating device is mounted so as to be able to irradiate light toward the incident port of the terminal block. The terminal block system according to claim 8.
The terminal block or the illumination device
A terminal block system characterized in that it is provided with a regulation mechanism that regulates the mounting position and direction so as to be a predetermined position and direction.

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