CN113258309A - Terminal block, electric device, and tool - Google Patents

Terminal block, electric device, and tool Download PDF

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Publication number
CN113258309A
CN113258309A CN202110163328.5A CN202110163328A CN113258309A CN 113258309 A CN113258309 A CN 113258309A CN 202110163328 A CN202110163328 A CN 202110163328A CN 113258309 A CN113258309 A CN 113258309A
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CN
China
Prior art keywords
tool
wire
electric wire
terminal
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110163328.5A
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Chinese (zh)
Inventor
千种真一
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CN113258309A publication Critical patent/CN113258309A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0416—Connectors, terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

A terminal block (1) is provided with: a conductive terminal (20), a conductive elastic member (30), and a conductive member (40). The terminal (20) has a 1 st wire abutting portion (23) which abuts against a core wire of the wire which enters the wire insertion space (13). The elastic member (30) has: a 2 nd wire abutting portion (33) that presses the core wire of the wire that has entered the wire insertion space (13) to the 1 st wire abutting portion (23); and a tool abutment portion (32) which abuts against a tool which enters the tool insertion space (14). The conductive member (40) has: a wire contact surface (41a) against which the tip of the core wire of the wire that has entered the bottom (13a) of the wire insertion space (13) is contacted; and a tool contact surface (42a) which faces a region of the tool contact portion (32) close to the tool insertion opening (12) and which is in contact with a tool inserted into the tool insertion space (14).

Description

Terminal block, electric device, and tool
Technical Field
The present invention relates to a terminal block having a terminal to be connected to a wire inserted from a wire insertion opening formed in a housing, an electrical apparatus, and a tool.
Background
Conventionally, there is known a terminal block configured such that, when connecting an electric wire to a terminal of a terminal block provided in an electric apparatus, the electric wire and the terminal can be connected by merely inserting the electric wire into the terminal block from an electric wire insertion opening formed in a housing without a screw fastening operation.
In such a terminal block, the amount of insertion of the electric wire cannot be actually grasped, and the electric wire may be inserted incompletely. Therefore, patent document 1 discloses a wire connection structure including a display member which projects from an opening for a display portion by a spring member when a wire is not inserted into a wire insertion space formed inside a housing, and which is flush with an outer surface of the housing when the wire is connected to a terminal after the insertion of the wire into the wire insertion space is completed.
Patent document 1: japanese patent laid-open publication No. 2018-101563
However, the technique described in patent document 1 has a problem that 2 members, i.e., a display member and a spring member for biasing the display member, are required in the wire connection structure.
Disclosure of Invention
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal block capable of grasping connection of a wire to a terminal while suppressing an increase in the number of components.
In order to solve the above problems and achieve the object, a terminal block according to the present invention includes an insulating housing, a conductive terminal, a conductive elastic member, and a conductive member. The housing is formed with an electric wire insertion opening into which an electric wire is inserted, a tool insertion opening into which a tool is inserted, an electric wire insertion space continuous with the electric wire insertion opening into which an electric wire inserted into the electric wire insertion opening is inserted, and a tool insertion space continuous with the tool insertion opening into which a tool inserted into the tool insertion opening is inserted. The terminal has a 1 st wire abutting portion abutting against a core wire of the wire entered into the wire insertion space. The elastic member has a 2 nd electric wire abutting portion and a tool abutting portion, the 2 nd electric wire abutting portion presses the core wire of the electric wire entered into the electric wire insertion space to the 1 st electric wire abutting portion, and the tool abutting portion abuts against the tool entered into the tool insertion space. The conductive member has an electric wire contact surface which is brought into contact with a tip of a core wire of the electric wire entering a bottom portion of the electric wire insertion space, and a tool contact surface which is opposed to a region close to the tool insertion opening in the tool contact portion and brought into contact with the tool entering the tool insertion space.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, it is possible to grasp connection of a wire to a terminal while suppressing an increase in the number of components.
Drawings
Fig. 1 is a perspective view showing an external appearance of a terminal block according to embodiment 1.
Fig. 2 is a front view of the terminal block according to embodiment 1.
Fig. 3 is a diagram showing an example of the internal configuration of the terminal block according to embodiment 1.
Fig. 4 is an exploded perspective view of the terminal block according to embodiment 1.
Fig. 5 is a diagram showing a state in which an electric wire is connected to a terminal of a terminal block according to embodiment 1.
Fig. 6 is a diagram showing a state in which the electric wire is detached from the terminal block according to embodiment 1.
Fig. 7 is a diagram showing an example of the configuration of the tool according to embodiment 1.
Fig. 8 is a diagram for explaining a method of confirming connection of an electric wire to a terminal of a terminal block using a tool according to embodiment 1.
Fig. 9 is a diagram showing an example of an electric device having a terminal block according to embodiment 1.
Fig. 10 is a diagram showing an example of the configuration of a connection management system including a tool and a terminal device according to embodiment 2.
Fig. 11 is a diagram showing an example of the configuration of a tool according to embodiment 3.
Detailed Description
Next, a terminal block, an electric device, and a tool according to the embodiments will be described in detail with reference to the drawings. The present invention is not limited to the embodiments.
Embodiment 1.
Fig. 1 is a perspective view showing an external appearance of a terminal block according to embodiment 1. Fig. 2 is a front view of the terminal block according to embodiment 1.
As shown in fig. 1 and 2, a terminal block 1 according to embodiment 1 includes: a frame body 10; and a terminal 20 held by the housing 10. In addition, although 1 terminal 20 is shown in the terminal block 1 shown in fig. 1, the terminal block 1 may be configured to provide 2 or more terminals 20. In this case, different electric wires are connected to 2 or more terminals 20, respectively.
A wire insertion port 11 into which the power supply wire 2 is inserted and a tool insertion port 12 into which the tool 3 is inserted are formed in the front surface of the housing 10. The terminal block 1 is a terminal block configured to be able to connect the electric wire 2 and the terminal 20 only by inserting the electric wire 2 into the terminal block from the electric wire insertion port 11. This terminal block 1 is sometimes referred to as a quick-connect terminal block, for example. The tool 3 has: an action portion 50 inserted into a tool insertion opening 12 formed in the terminal block 1; and a grip 60 to be gripped by an operator.
The housing 10 is formed of an insulating member such as a resin member. The terminal 20 is formed of a conductive member. The electric wire 2 has a core wire 2a and an insulating coating 2b covering the core wire 2a, and the coating 2b is removed from the tip of the electric wire 2 to expose the core wire 2 a.
Fig. 3 is a diagram showing an example of the internal configuration of the terminal block according to embodiment 1. Fig. 4 is an exploded perspective view of the terminal block according to embodiment 1. The housing 10 shown in fig. 3 and 4 is cut along the line III-III shown in fig. 2.
As shown in fig. 3, inside the housing 10 of the terminal block 1, disposed are: a terminal 20; a conductive elastic member 30 that presses the core wire 2a of the electric wire 2 to the terminal 20; and a conductive member 40 which is in contact with the core wire 2a of the wire 2 and the tool 3.
As shown in fig. 3 and 4, inside the housing 10, there are formed: a wire insertion space 13 continuous with the wire insertion port 11, into which the wire 2 inserted into the wire insertion port 11 is inserted; and a tool insertion space 14 continuous with the tool insertion opening 12 and into which the tool 3 inserted into the tool insertion opening 12 is inserted. As shown in fig. 4, inside the housing 10, there are formed: a wire entry length specifying surface 15 that specifies a length of a portion of the wire 2 that enters the wire insertion space 13; holding portions 16, 17 for holding the terminals 20; and recesses 18 and 19, which are disposed in part of the conductive member 40.
As shown in fig. 4, the terminal 20 is a plate-like member having an inner peripheral surface 22 formed with a rectangular opening 21, and the core wire 2a of the power supply line 2 and the elastic member 30 are inserted through the opening 21. The inner peripheral surface 22 includes: a 1 st wire abutting portion 23 abutting against the core wire 2a of the wire 2; and an elastic member abutting portion 24 that abuts against the elastic member 30. The 1 st electric wire abutting portion 23 and the elastic member abutting portion 24 are opposed to each other via the opening 21.
As shown in fig. 3 and 4, the elastic member 30 includes: a base portion 31 extending in the vertical direction in fig. 3 and 4; a tool contact portion 32 which is contacted by the tool 3; and a 2 nd electric wire abutting portion 33 which is abutted by the core wire 2a of the electric wire 2. The elastic member 30 is, for example, a plate spring formed by processing a plate having elasticity and conductivity, but may be an elastic member other than the plate spring.
The base portion 31 is inserted into the opening 21 penetrating the terminal 20, and the region close to the wire entry length determining surface 15 abuts against the elastic member abutting portion 24. The tool abutment portion 32 is disposed between the base portion 31 and the 2 nd wire abutment portion 33. The tool abutment portion 32 includes: a 1 st tool abutment portion 34 located near the base portion 31; and a 2 nd tool abutment portion 35 located at a position close to the 2 nd electric wire abutment portion 33.
The 1 st tool abutment portion 34 has: a curved portion 34a which is continuous with the base portion 31 and curved in a convex shape; and an extension portion 34b continuous with the bent portion 34a and extending downward in fig. 3 and 4. The 2 nd tool contact portion 35 is continuous with the extending portion 34b of the 1 st tool contact portion 34 and extends in a direction approaching the wire insertion space 13. That is, the 2 nd tool abutment portion 35 extends in a direction away from the base portion 31. The 2 nd tool abutment portion 35 is continuous with the 2 nd electric wire abutment portion 33.
The 2 nd electric wire contact portion 33 is biased in a direction toward the 1 st electric wire contact portion 23 by the tool contact portion 32. Therefore, the 2 nd wire abutting portion 33 abuts against the 1 st wire abutting portion 23 formed on the terminal 20 as shown in fig. 3 in a state where the wire 2 does not enter the wire insertion space 13, and the elastic member 30 is held by the terminal 20.
As shown in fig. 3 and 4, the conductive member 40 includes: a wire contact portion 41 which is disposed at the bottom portion 13a of the wire insertion space 13 and has a wire contact surface 41a which is brought into contact with the tip of the core wire 2a entering the bottom portion 13a of the wire insertion space 13; and a tool abutment portion 42 having a tool abutment surface 42a which abuts against the tool 3 inserted into the tool insertion space 14. The wire contact portion 41 and the tool contact portion 42 are each formed in a plate shape.
The wire contact portion 41 is disposed on the wire entry length specifying surface 15 formed on the housing 10. The wire contact surface 41a shown in fig. 3 and 4 is a flat surface, but may be a surface having irregularities. The tool contact portion 42 is disposed in the recess 18 formed in the frame 10. Thus, the tool contact portion 42 is disposed at a position facing the 1 st tool contact portion 34, which is a region close to the tool insertion opening 12, in the tool contact portion 32. Therefore, the tool abutment surface 42a is disposed at a position facing the 1 st tool abutment portion 34. The tool abutment surface 42a shown in fig. 3 and 4 is a flat surface, but may be a surface having irregularities.
As shown in fig. 3 and 4, the conductive member 40 includes a coupling portion 43, and the coupling portion 43 is disposed between the wire contact portion 41 and the tool contact portion 42 to connect the wire contact portion 41 and the tool contact portion 42. The coupling portion 43 is formed in a plate shape, and the surface of the coupling portion 43 is orthogonal to each of the wire contact surface 41a and the tool contact surface 42 a. The connection portion 43 faces the elastic member 30 with a gap therebetween in a direction orthogonal to the direction in which the elastic member 30 elastically deforms, and is disposed at a position not in contact with the elastic member 30.
Next, the connection of the electric wire 2 to the terminal 20 of the terminal block 1 will be described. The connection of the electric wire 2 to the terminal 20 is performed by an operator. Fig. 5 is a diagram showing a state in which an electric wire is connected to a terminal of a terminal block according to embodiment 1. In a state where the electric wire 2 is connected to the terminal 20, as shown in fig. 5, the core wire 2a of the electric wire 2 is in contact with the 1 st electric wire contact portion 23 of the terminal 20 and the 2 nd electric wire contact portion 33 of the elastic member 30, respectively, and is connected to the terminal 20 and the elastic member 30.
In the state shown in fig. 5, the 2 nd wire abutting portion 33 of the elastic member 30 is biased in the direction toward the 1 st wire abutting portion 23 by the base portion 31 and the tool abutting portion 32. Therefore, the core wires 2a of the electric wires 2 are held by the 1 st electric wire contact portion 23 and the 2 nd electric wire contact portion 33 in a state of being sandwiched between the 1 st electric wire contact portion 23 and the 2 nd electric wire contact portion 33, and the electric wires 2 cannot be easily detached from the terminal block 1.
When an operator connects the electric wire 2 to the terminal 20, if the electric wire 2 is inserted into the electric wire insertion opening 11 and the electric wire 2 is continuously inserted into the electric wire insertion space 13, the tip of the core wire 2a of the electric wire 2 comes into contact with the 2 nd electric wire contact portion 33 and the 2 nd electric wire contact portion 33 is moved in a direction away from the 1 st electric wire contact portion 23. The further the tip of the core wire 2a of the electric wire 2 is toward the wire entry length defining surface 15, the further the 2 nd wire contact portion 33 is away from the 1 st wire contact portion 23, and the tip of the core wire 2a of the electric wire 2 passes between the 1 st wire contact portion 23 and the 2 nd wire contact portion 33.
The tip of the core wire 2a of the wire 2 passes between the 1 st wire contact portion 23 and the 2 nd wire contact portion 33, and then abuts against the wire contact surface 41a of the wire contact portion 41 arranged on the wire entry length specifying surface 15. This completes the connection operation of the electric wire 2 to the terminal 20 by the operator. In this state, the core wire 2a of the electric wire 2 is sandwiched between the 1 st electric wire contact portion 23 and the 2 nd electric wire contact portion 33, and the connection of the electric wire 2 to the terminal 20 of the terminal block 1 is completed.
Next, the removal of the electric wire 2 from the terminal block 1 will be described. Fig. 6 is a diagram showing a state in which the electric wire is detached from the terminal block according to embodiment 1. As shown in fig. 6, if the operator inserts the working portion 50 of the tool 3 into the tool insertion opening 12 and continuously inserts the working portion 50 of the tool 3 into the tool insertion space 14, the tip of the working portion 50 of the tool 3 presses the 2 nd tool contact portion 35 of the tool contact portions 32 of the elastic member 30 in a direction away from the electric wire 2.
Therefore, as shown in fig. 6, the 2 nd wire contact portion 33 continuous with the 2 nd tool contact portion 35 is separated from the core wire 2a of the wire 2, and the state in which the core wire 2a is sandwiched by the 1 st wire contact portion 23 and the 2 nd wire contact portion 33 is released. In this state, the operator pulls the electric wire 2 upward to detach the electric wire 2 from the terminal block 1.
Further, the action portion 50 is formed in the same shape as the screwdriver. Therefore, the electric wire 2 can be detached from the terminal block 1 by the screwdriver in the same procedure as the tool 3. In the above example, the tool 3 is configured to have a function of detaching the electric wire 2 from the terminal block 1, but may not have a function of detaching the electric wire 2 from the terminal block 1. For example, the tool 3 may be such that the length of the action portion 50 does not reach the length of the 2 nd tool abutment portion 35. In this case, the electric wire 2 is detached from the terminal block 1 by a screwdriver.
Next, the tool 3 will be explained. Fig. 7 is a diagram showing an example of the configuration of the tool according to embodiment 1. The tool 3 shown in fig. 7 has a function of detecting connection of the electric wire 2 to the terminal 20 of the terminal block 1.
The tool 3 has the working portion 50 and the grip portion 60 as described above. The action portion 50 is formed by integrating a 1 st conductor 51 and a 2 nd conductor 52 extending in the same direction while being insulated from each other. The action portion 50 has the same shape as the shaft and the driver bit of the driver, and the 1 st conductor 51 and the 2 nd conductor 52 are formed in plane symmetry with each other via an insulating member not shown. The action portion 50 may have a shape different from that of a screwdriver, for example. For example, the tip of the action portion 50 may be formed in a hemispherical shape.
The grip portion 60 includes: a frame 61 that supports the action portion 50; and a connection detection unit 62 that is disposed inside the housing 61 and detects a short circuit between the 1 st conductor 51 and the 2 nd conductor 52 to detect a connection of the electric wire 2 to the terminal 20 of the terminal block 1.
In the connection detection unit 62, a current flows through a closed loop formed when the 1 st conductor 51 and the 2 nd conductor 52 are short-circuited. When a current flows through the closed loop, the connection detector 62 detects that the connection of the electric wire 2 to the terminal 20 of the terminal block 1 is completed.
The connection detection unit 62 includes: a power supply 63 having one end connected to the 1 st conductor 51; and a notification unit 64 having one end connected to the other end of the power supply 63 and the other end connected to the 2 nd conductor 52. The notification unit 64 notifies that the electric wire 2 is connected to the terminal 20 by emitting sound, light, and vibration when a current flows between the power supply 63 and the 2 nd conductor 52.
The notification portion 64 includes a light emitting diode connected in series between the power source 63 and the 2 nd conductor 52, and notifies that the electric wire 2 is connected to the terminal 20 by emitting light from the light emitting diode by a current flowing between the power source 63 and the 2 nd conductor 52. The notification unit 64 has a buzzer connected in series between the power supply 63 and the 2 nd conductor 52, and notifies that the electric wire 2 is connected to the terminal 20 by sounding the buzzer by a current flowing between the power supply 63 and the 2 nd conductor 52. The notification unit 64 includes a vibration generator connected in series between the power source 63 and the 2 nd conductor 52, and notifies that the electric wire 2 is connected to the terminal 20 by vibrating the vibration generator by a current flowing between the power source 63 and the 2 nd conductor 52. Thus, even when the terminal block 1 is present in a dark place where visual recognition is difficult, for example, an operator can confirm that the connection of the electric wire 2 to the terminal 20 is completed by sound, light, and vibration. Note that the notification unit 64 is not limited to the above configuration as long as it is configured to emit at least any one of sound, light, and vibration.
Next, a method of confirming the connection of the electric wire 2 to the terminal 20 of the terminal block 1 using the tool 3 will be described. Fig. 8 is a diagram for explaining a method of confirming connection of an electric wire to a terminal of a terminal block using a tool according to embodiment 1. When the operator inserts the working portion 50 of the tool 3 into the tool insertion opening 12 and inserts the working portion 50 into the tool insertion space 14, as shown in fig. 8, the tip of the 1 st conductor 51 abuts against the tool abutment surface 42a, and the tip of the 2 nd conductor 52 abuts against the 1 st tool abutment portion 34 among the tool abutment portions 32.
In the state shown in fig. 8, the core wire 2a of the wire 2 is sandwiched between the 1 st wire contact portion 23 and the 2 nd wire contact portion 33, and the tip of the core wire 2a of the wire 2 abuts on the wire contact surface 41a of the conductive member 40. Therefore, an electric circuit passing through the 1 st conductor 51, the tool contact portion 42, the coupling portion 43, the electric wire contact portion 41, the core wire 2a, the 2 nd electric wire contact portion 33, the tool contact portion 32, and the 2 nd conductor 52 is formed in the action portion 50 and the terminal block 1.
Therefore, in the action portion 50, the 1 st conductor 51 and the 2 nd conductor 52 are short-circuited. When the 1 st conductor 51 and the 2 nd conductor 52 are short-circuited, the connection detector 62 detects the connection of the electric wire 2 to the terminal 20 of the terminal block 1, and notifies that the electric wire 2 is connected to the terminal 20 by at least 1 of sound, light, and vibration. Further, even when the tip of the 1 st conductor 51 abuts against the 1 st tool abutment portion 34 and the tip of the 2 nd conductor 52 abuts against the tool abutment surface 42a, the 1 st conductor 51 and the 2 nd conductor 52 are short-circuited similarly, and therefore the connection detection portion 62 can detect the connection of the electric wire 2 to the terminal 20.
If connection of the electric wire to the terminal is attempted to be detected by another device in a mechanical terminal block that displays connection of the electric wire to the terminal by moving a position of a physical display member, an image recognition or a limit switch proximity sensor or the like is necessary in another device. On the other hand, the tool 3 can be produced at low cost without using the image recognition or the limit switch proximity sensor or the like as described above for the tool 3.
Further, by using the tool 3, it is possible to grasp the connection of the electric wire 2 to the terminal 20 of the terminal block 1 or to detach the electric wire 2 from the terminal block 1. The amount of insertion of the wire 2 into the housing 10, which is required to detect the connection of the wire 2 to the terminal 20 by the tool 3, is smaller than the amount of insertion of the wire 2 into the housing 10, which is required to detach the wire 2 from the terminal block 1. As described above, the operator can use the tool 3 for different purposes by changing the insertion amount of the tool 3.
The terminal block 1 is provided in an electrical device, for example, in an amount of 1 or more. Fig. 9 is a diagram showing an example of an electric device having a terminal block according to embodiment 1. The electric device 7 shown in fig. 9 has a terminal block 1. The terminal block 1 has 1 or more terminals 20. The electrical device 7 is, for example, a sequencer, an inverter, a thermistor protector, a circuit breaker, a shutter, an electromagnetic contactor, or the like. The terminal block 1 is used as a terminal portion for inputting and outputting a control signal in a sequencer, an inverter, or a thermistor protector. The terminal block 1 is used as an electric wire connection portion for connecting an electric wire 2 to a circuit breaker, a switch, or an electromagnetic contactor.
When the electrical device 7 is a circuit breaker, a switch, or an electromagnetic contactor and is connected to a 3-phase ac power supply, a total of 6 terminals 20 are required on the power supply side and the load side in the electrical device 7, but only 6 conductive members 40 need be added to the terminal block 1, and an increase in the number of components can be suppressed.
As described above, the terminal block 1 according to embodiment 1 includes the insulating housing 10, the conductive terminal 20, the conductive elastic member 30, and the conductive member 40. The frame body 10 is formed with: a wire insertion port 11 into which the power supply wire 2 is inserted; a tool insertion opening 12 into which the tool 3 is inserted; a wire insertion space 13 continuous with the wire insertion port 11, into which the wire 2 inserted into the wire insertion port 11 is inserted; and a tool insertion space 14 continuous with the tool insertion opening 12 and into which the tool 3 inserted into the tool insertion opening 12 is inserted. The terminal 20 has a 1 st wire abutting portion 23 abutting against the core wire 2a of the electric wire 2 entered into the wire insertion space 13. The elastic member 30 includes: a 2 nd electric wire abutting portion 33 that presses the core wire 2a of the electric wire 2 entered into the electric wire insertion space 13 to the 1 st electric wire abutting portion 23; and a tool abutment portion 32 that abuts against the tool 3 that has entered the tool insertion space 14. The conductive member 40 has: a wire contact surface 41a which is contacted with the tip of the core wire 2a entering the bottom 13a of the wire insertion space 13; and a tool contact surface 42a which faces a region of the tool contact portion 32 close to the tool insertion opening 12 and contacts the tool 3 inserted into the tool insertion space 14. Thus, by providing 1 conductive member 40 in the terminal block 1, the connection of the electric wire 2 to the terminal 20 of the terminal block 1 can be detected using the tool 3. Therefore, the terminal block 1 can be configured with fewer components than a terminal block that displays connection of an electric wire by a display member and a spring member that biases the display member, for example.
In addition, the 1 st wire abutting portion 23 of the terminal 20 is formed on the inner peripheral surface 22, and the inner peripheral surface 22 is formed with the opening 21, and the opening 21 is inserted with the 2 nd wire abutting portion 33 of the elastic member 30 and the core wire 2a of the wire 2, respectively. Thus, the terminal block 1 can cause the distal end of the core wire 2a to pass through the aperture 21 and cause the distal end of the core wire 2a to contact the wire contact surface 41 a. Therefore, in a state where the tip of the core wire 2a is in contact with the wire contact surface 41a, the core wire 2a can be reliably brought into contact with the 1 st wire contact portion 23.
The tool 3 is a tool for detecting connection of the electric wire 2 to the terminal 20 of the terminal block 1. The tool 3 has an action portion 50 and a connection detection portion 62. The action portion 50 is formed by integrating a 1 st conductor 51 and a 2 nd conductor 52 extending in the same direction in an insulated state from each other, and enters the tool insertion space 14 through the tool insertion opening 12. The connection detecting portion 62 detects the connection of the electric wire 2 to the terminal 20 when the 1 st conductor 51 and the 2 nd conductor 52 are short-circuited in a state where one of the tool contact surface 42a and the tool contact portion 32 is in contact with the 1 st conductor 51 and the other is in contact with the 2 nd conductor 52. The tool 3 can detect the connection of the wire 2 to the terminal 20 by the short circuit of the 1 st conductor 51 and the 2 nd conductor 52, and therefore can be manufactured at low cost with a simple configuration.
When the connection detector 62 detects the connection of the wire 2 to the terminal 20, it emits at least 1 of sound, light, and vibration. This enables an operator to confirm the connection of the wire 2 to the terminal 20 even when the terminal block 1 is present in a dark place where visual recognition is difficult, for example.
Embodiment 2.
The tool according to embodiment 2 is different from the tool 3 according to embodiment 1 in that it has a communication function of transmitting information indicating completion of connection of a wire to a terminal. Hereinafter, the same reference numerals are used to designate components having the same functions as those of embodiment 1, and the description thereof will be omitted, and the differences from the tool 3 of embodiment 1 will be mainly described.
Fig. 10 is a diagram showing an example of the configuration of a connection management system including a tool and a terminal device according to embodiment 2. The tool 3A shown in fig. 10 has an action portion 50 and a grip portion 60A. The grip portion 60A includes a housing 61 and a processing portion 65 disposed in the housing 61. The processing unit 65 includes a connection detection unit 62 and a communication unit 66.
When the connection detector 62 detects the connection of the wire 2 to the terminal 20, the communication unit 66 wirelessly transmits connection completion information, which is information indicating that the connection of the wire 2 to the terminal 20 is completed, to the terminal device 5. The terminal device 5 receives the connection completion information transmitted from the tool 3A, and updates the connection job information based on the received connection completion information. The connection work information is, for example, information indicating the plurality of terminals 20 or the plurality of terminal blocks 1 to be subjected to the connection work of the electric wire 2 in a form or a list. The operator can confirm whether or not there is a connection omission based on the connection work information.
The terminal device 5 is a portable device having a wireless communication function, such as a smartphone, a tablet, or a personal computer. Further, the terminal device 5 is provided with an application program for displaying the connection job information or updating the connection job information based on the connection completion information transmitted from the tool 3A.
When an input operation from an operator to an input unit, not shown, is performed, the terminal device 5 displays information of the plurality of terminals 20 or information of the plurality of terminal blocks 1, which are targets of a connection operation of the electric wire 2, on a display unit, not shown, based on the connection operation information. The operator selects, for example, a terminal 20 to be connected and confirmed among the plurality of terminals 20 whose information is displayed on the display unit, and performs the operation of connecting the electric wire 2 to the terminal 20. Then, if the terminal device 5 receives the connection completion information from the tool 3A, the operator adds information indicating that the connection of the electric wire 2 has been completed at the selected terminal 20 to the connection operation information. Thus, the operator can manage the operation history without inputting information indicating that the connection of the electric wire 2 to the terminal 20 is completed.
Further, a plurality of terminals 20 are disposed on each of the plurality of terminal blocks 1. In this case, for example, the operator selects a terminal block 1 to be connected and confirmed among the plurality of terminal blocks 1 whose information is displayed on the display unit, and performs an operation of connecting each electric wire 2 to the terminal 20. Then, if the terminal device 5 receives the connection completion information from the tool 3A the same number of times as the number of terminals 20 provided on the terminal block 1 selected by the operator, the operator adds information indicating that the connection of the electric wire 2 to each terminal 20 of the selected terminal block 1 is completed to the connection operation information. Thus, the operator can manage the operation history without inputting information indicating that the connection of the electric wire 2 to each terminal 20 of the terminal block 1 is completed.
The connection operation information may be information indicating the number of terminals 20 to be connected. In this case, the terminal device 5 counts the number of pieces of connection completion information transmitted from the tool 3A, and stores the counted number as the number of connection confirmations. The operator can easily check the work by displaying the connection work information and the number of connection checks on a display unit, not shown, on the terminal device 5. When the connection job information and the connection confirmation number match, the terminal device 5 can display information indicating that all jobs have been completed on a display unit, not shown.
As described above, the tool 3A according to embodiment 2 includes the communication unit 66, and when the connection detection unit 62 detects the connection of the wire 2 to the terminal 20, the communication unit 66 wirelessly transmits information indicating that the connection of the wire 2 to the terminal 20 is completed. This reduces the work load on the tool 3A. For example, the operator performs an operation of inserting the tool 3A into the tool insertion space 14 of the terminal block 1, thereby checking whether or not the operation is lost, and improving the operation quality and saving labor.
Embodiment 3.
The tool according to embodiment 3 is different from the tool 3 according to embodiment 1 in that information indicating completion of connection of the electric wire to the terminal is recorded in a storage medium. Hereinafter, the same reference numerals are used to designate components having the same functions as those of embodiment 1, and the description thereof will be omitted, and the differences from the tool 3 of embodiment 1 will be mainly described.
Fig. 11 is a diagram showing an example of the configuration of a tool according to embodiment 3. The tool 3B shown in fig. 11 has an action portion 50 and a grip portion 60B. The grip portion 60B includes a connection detection portion 62 and a storage processing portion 67 inside the housing 61.
The storage processing unit 67 has a storage medium slot for recording information on the storage medium 6 or reading information recorded on the storage medium 6. The storage medium 6 is, for example, an SD memory card, a usb (universal Serial bus) memory, or a cf (compact flash) card. When the connection detector 62 detects the connection of the wire 2 to the terminal 20, the storage processor 67 stores information indicating that the connection of the wire 2 to the terminal 20 is completed in the storage medium 6.
The worker can, for example, remove the storage medium 6 from the tool 3B after the completion of the work, and write information on the removed storage medium 6 in a management device, not shown. Thus, the work management can be performed without bringing the terminal device or the like to the work site. The grip portion 60B may be configured to include a processing unit 65 including the connection detection unit 62 and the communication unit 66 instead of the connection detection unit 62.
As described above, the tool 3B according to embodiment 2 includes the storage processing unit 67, and when the connection detecting unit 62 detects the connection of the wire 2 to the terminal 20, the storage processing unit 67 stores information indicating that the connection of the wire 2 to the terminal 20 is completed in the storage medium 6. This reduces the work load on the tool 3B.
The configurations described in the above embodiments are only examples of the contents of the present invention, and may be combined with other known techniques, or the embodiments may be combined with each other, and a part of the configurations may be omitted or modified without departing from the scope of the present invention.
Description of the reference numerals
1 terminal block, 2 electric wire, 2a core wire, 2B coating film, 3A, 3B, tool, 5 terminal device, 6 storage medium, 7 electric device, 10, 61 frame, 11 electric wire insertion opening, 12 tool insertion opening, 13 electric wire insertion space, 13A bottom, 14 tool insertion space, 15 electric wire entry length-defining surface, 16, 17 holding portion, 18, 19 recess, 20 terminal, 21 opening, 22 inner peripheral surface, 23 st electric wire contact portion, 24 elastic member contact portion, 30 elastic member, 31 base portion, 32, 42 tool contact portion, 33 nd 2 electric wire contact portion, 34 st tool contact portion, 34a bent portion, 34B extended portion, 35 nd 2 tool contact portion, 40 conductive member, 41 electric wire contact portion, 41a electric wire contact surface, 42a tool contact surface, 43, 50 action portion, 51 st 1 conductor, 52 nd 2 conductor, 60A extended portion, 35 th tool contact portion, 40 conductive member, 41 th electric wire contact portion, 41a electric wire contact surface, 42a tool contact surface, 43, 50 action portion, 51 st conductor, 52 nd 2 conductor, 60A, 60B holding part, 62 connection detection part, 63 power supply, 64 notification part, 65 processing part, 66 communication part, 67 storage processing part.

Claims (7)

1. A terminal block is characterized by comprising:
an insulating frame body that forms an electric wire insertion port into which an electric wire is inserted, a tool insertion port into which a tool is inserted, an electric wire insertion space that is continuous with the electric wire insertion port and into which the electric wire inserted into the electric wire insertion port is inserted, and a tool insertion space that is continuous with the tool insertion port and into which the tool inserted into the tool insertion port is inserted;
a conductive terminal having a 1 st wire abutting portion abutting against a core wire of the wire inserted into the wire insertion space;
an electrically conductive elastic member having a 2 nd electric wire abutting portion and a tool abutting portion, the 2 nd electric wire abutting portion pressing the core wire of the electric wire entered into the electric wire insertion space to the 1 st electric wire abutting portion, the tool abutting portion abutting against the tool entered into the tool insertion space; and
and a conductive member having an electric wire contact surface that contacts a tip end of a core wire of the electric wire that has entered a bottom portion of the electric wire insertion space, and a tool contact surface that faces a region of the tool contact portion that is close to the tool insertion opening and contacts the tool that has entered the tool insertion space.
2. The terminal block of claim 1,
the 1 st wire abutting portion of the terminal is formed on an inner peripheral surface which is formed with an opening into which the 2 nd wire abutting portion of the elastic member and a core wire of the wire are inserted, respectively.
3. An electrical apparatus, characterized in that,
having a terminal block as claimed in claim 1 or 2.
4. A tool which detects connection of the electric wire to the terminal of the terminal block according to claim 1 or 2,
the tool is characterized by comprising:
an action portion formed by integrating a 1 st conductor and a 2 nd conductor extending in the same direction in a state of being insulated from each other, the action portion entering the tool insertion space through the tool insertion opening; and
and a connection detection unit that detects connection of the electric wire to the terminal when the 1 st conductor and the 2 nd conductor are short-circuited in a state where one of the tool contact portion and the tool contact surface is in contact with the 1 st conductor and the other is in contact with the 2 nd conductor.
5. The tool of claim 4,
the connection detecting unit generates at least 1 of sound, light, and vibration when detecting the connection of the wire to the terminal.
6. The tool according to claim 4 or 5,
the connector includes a communication unit that wirelessly transmits information indicating that the connection of the wire to the terminal is completed when the connection detection unit detects the connection of the wire to the terminal.
7. The tool according to any one of claims 4 to 6,
the connection detection unit detects connection of the electric wire to the terminal, and the storage processing unit stores information indicating that the connection of the electric wire to the terminal is completed in a storage medium.
CN202110163328.5A 2020-02-12 2021-02-05 Terminal block, electric device, and tool Pending CN113258309A (en)

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JP2020021718A JP7237030B2 (en) 2020-02-12 2020-02-12 Terminal blocks, electrical equipment, and tools
JP2020-021718 2020-02-12

Publications (1)

Publication Number Publication Date
CN113258309A true CN113258309A (en) 2021-08-13

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Application Number Title Priority Date Filing Date
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JP (1) JP7237030B2 (en)
CN (1) CN113258309A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07122307A (en) * 1993-10-26 1995-05-12 Matsushita Electric Works Ltd Quick connection terminal device
JP2001307789A (en) * 2000-04-18 2001-11-02 Hakko Denki Seisakusho:Kk Electric connector
CN111163943A (en) 2017-07-25 2020-05-15 鹤卷京彦 Method for manufacturing sheet member and sheet member

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JP2021128844A (en) 2021-09-02

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