Terminal blocks and terminal block sets

Abstract

To provide a terminal block capable of displaying that the input / output voltage to another terminal block has been determined to be abnormal. [Solution] A terminal block that can be electrically connected to other terminal blocks comprises a determination unit and a display unit. The determination unit is configured to determine whether a first voltage output to the other connected terminal block, or a second voltage input from the other connected terminal block, is normal or abnormal. The display unit is configured to display that the first voltage or the second voltage has been determined to be abnormal when it is determined that the first voltage or the second voltage is abnormal.

Description

Technical Field

[0001] The present disclosure relates to terminal blocks and terminal block sets.

Background Art

[0002] Patent Document 1 discloses a terminal block in which an indicator light that can confirm that the electric heater is operating normally when lit is integrally installed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The terminal block of Patent Document 1 does not consider at all the operation of the electric heater of the terminal block where the indicator light is not installed.

[0005] The present disclosure aims to provide a terminal block capable of displaying that the input / output voltage to another terminal block is determined to be abnormal, and a terminal block set capable of displaying on the first terminal block that the first voltage output from the first terminal block to the second terminal block or the second voltage input from the second terminal block to the first terminal block is determined to be abnormal.

Means for Solving the Problems

[0006] The terminal block according to one aspect of the present disclosure is a terminal block electrically connectable to another terminal block, a determination unit configured to determine whether a first voltage output to the connected other terminal block or a second voltage input from the connected other terminal block is normal or abnormal; A light-emitting element is included, and when it is determined that the first voltage or the second voltage is abnormal, a display unit is used to indicate via the light-emitting element that the first voltage or the second voltage has been determined to be abnormal. It is equipped with.

[0007] A terminal block set in one aspect of this disclosure is A first terminal block, which is a terminal block according to the above embodiment, The second terminal block, which is the other terminal block mentioned above, Equipped with, The first terminal block and the second terminal block are electrically connected. [Effects of the Invention]

[0008] According to this disclosure, it is possible to realize a terminal block capable of displaying that the input / output voltage to another terminal block has been determined to be abnormal, and a terminal block set capable of displaying on the first terminal block that the first voltage output from the first terminal block to the second terminal block or the second voltage input from the second terminal block to the first terminal block has been determined to be abnormal. [Brief explanation of the drawing]

[0009] [Figure 1] A block diagram showing a terminal block set in one aspect of the present disclosure. [Figure 2] Figure 1 shows a perspective view of the second terminal block of the terminal block set. [Figure 3] A side view showing the first and second terminal blocks of the terminal block set in Figure 1 in a connected state. [Figure 4] A cross-sectional view showing the first and second terminal blocks of the terminal block set in Figure 1 connected together. [Figure 5] A cross-sectional view showing the first terminal block of the terminal block set in Figure 1. [Figure 6] A cross-sectional view showing the second terminal block of the terminal block set in Figure 1. [Figure 7] A circuit diagram showing an example of the determination unit of the terminal block set in Figure 1. [Figure 8] A flowchart illustrating an example of a display process for showing the second normal state using the terminal block set shown in Figure 1. [Figure 9] A diagram showing an example of a jig for the terminal block set of FIG. 1. [Figure 10] A circuit diagram showing a second example of the determination unit of the terminal block set of FIG. 1. [Figure 11] A circuit diagram showing a third example of the determination unit of the terminal block set of FIG. 1. [Figure 12] A circuit diagram showing a modified example of the terminal block set of FIG. 1.

Mode for Carrying Out the Invention

[0010] Hereinafter, an example of the present disclosure will be described with reference to the accompanying drawings. The following description is merely illustrative in nature and does not limit the present disclosure, its applications, and its uses. The accompanying drawings are schematic drawings, and the illustrated configurations and actual products may have different ratios of each dimension, etc.

[0011] The terminal block set 1 of one aspect of the present disclosure includes a first terminal block 10 and a second terminal block 20, as shown in FIG. 1. In this aspect, the first terminal block 10 and the second terminal block 20 are push-in connection type terminal blocks. As shown in FIG. 2, the second terminal block 20 constitutes a part of the power supply device 2.

[0012] The first terminal block 10 and the second terminal block 20 are electrically connected via a conduction member 30, as shown in FIGS. 3 and 4. The conduction member 30 includes, for example, a copper plate and an electric wire. In this aspect, power is supplied from the first terminal block 10 to the second terminal block 20 via a cable 50 (an example of a conduction member) connected to the first terminal block 10.

[0013] The first terminal block 10 is configured to be electrically connectable to other terminal blocks including the second terminal block 20. The first terminal block 10 includes a determination unit 11 and a display unit 12. In this aspect, the first terminal block 10 and the second terminal block 20 include connection portions 13, 21 and are electrically connected via the connection portions 13, 21. A cable 50 is connected to the connection portion 13 of the first terminal block 10.

[0014] The determination unit 11 is configured to be able to determine whether the first voltage output to the connected second terminal block 20 or the second voltage input from the connected second terminal block 20 is normal. In this embodiment, the determination unit 11 is, for example, configured by the circuit shown in FIG. 7. In the circuit of FIG. 7, an AC voltage is input from an external power supply 60 to the first terminal block 10. The input AC voltage is divided and input to the comparator IC110. If the input AC voltage is greater than or equal to the threshold value, it is determined that the first voltage is normal, and current flows through the terminal K to the display unit 12, and the LED121 lights up. Regarding the second voltage, it can also be determined whether it is normal with the same circuit configuration as the circuit shown in FIG. 7. In this case, the DC voltage output from the power supply device 2 is input to the first terminal block 10. The input DC voltage is divided and input to the comparator IC110. If the input DC voltage is greater than or equal to the threshold value, it is determined that the second voltage is normal, and current flows through the terminal K to the display unit 12, and the LED121 lights up.

[0015] When the determination unit 11 determines that the first voltage or the second voltage is normal, the display unit 12 is caused to display that "the first voltage is normal" or "the second voltage is normal".

[0016] The determination unit 11 may include a processor 111 and a storage device 112. The processor 111 and the storage device 112 may, for example, constitute a part of the circuit shown in FIG. 7. The processor 111 includes, for example, a CPU, MPU, GPU, DSP, FPGA, ASIC, or a combination thereof. The storage device 112 includes, for example, a non-temporary computer-readable storage medium constituted by an internal recording medium or an external recording medium. The internal recording medium includes a non-volatile memory and the like. The external recording medium includes a hard disk drive (HDD), a solid state drive (SSD), an optical disk device, or the like. The determination unit 11 may be configured to transmit and receive data to and from an external device such as a server via a communication circuit or a communication module.

[0017] The display unit 12 is configured to display "The first voltage is normal" or "The second voltage is normal" when it is determined that the first voltage or the second voltage is normal.

[0018] In this embodiment, the display unit 12 includes a light-emitting element 121. The light-emitting element 121 includes, for example, an LED (light-emitting diode) 122 and a light-guiding member 123, as shown in Figure 4. The LED 122 is located on the substrate 124 of the first terminal block 10 facing the second terminal block 20 when the first terminal block 10 and the second terminal block 20 are connected. The illumination of the LED 122 indicates that "the first voltage or the second voltage is normal."

[0019] The first terminal block 10 and the second terminal block 20 include housings 101 and 201, respectively, and the respective connection portions 13 and 21 are located inside the housings 101 and 201. Each connection portion 13 and 21 includes terminal portions 131 and 211 configured to contact the housed conductive member 30.

[0020] In the state shown in Figure 4, where the first terminal block 10 and the second terminal block 20 are connected by a conductive member 30, the housing 101 of the first terminal block 10 has openings 102 and 103 located on the side opposite to the side facing the second terminal block 20. The openings 102 and 103 are adjacent. The housing 201 of the second terminal block 20 has openings 202 and 203 located on the side facing the first terminal block 10. The openings 202 and 203 are adjacent. The openings 102 and 103 of the first terminal block 10 are connected to the connection part 13, and the openings 202 and 203 of the second terminal block 20 are connected to the connection part 21. In this embodiment, the housing 101 has a plurality of openings 102 and 103, and the housing 201 has a plurality of openings 202 and 203. The housing 101 is provided with the same number of openings 102 and 103. The housing 201 is provided with the same number of openings 202 and 203.

[0021] As shown in Figures 4 and 5, the connection portion 13 of the first terminal block 10 includes, for example, a leaf spring 132. The leaf spring 132 is configured to hold the cable 50 housed in the opening 102 together with the terminal portion 131, and to release the cable 50 from its hold by a jig (not shown) housed in the connection portion 13 through the opening 103.

[0022] As shown in Figures 4 and 6, the connection portion 21 of the second terminal block 20 is configured to accommodate a portion of the conductive member 30, to hold a portion of the accommodated conductive member 30, and to release the hold of the accommodated conductive member 30 by the jig 40. A portion of the conductive member 30 is accommodated in the connection portion 21 through an opening 202 of the housing 201. The opening 202 is an example of a first opening.

[0023] As an example, the connection portion 21 has a leaf spring 212. The leaf spring 212 is capable of holding the conductive member 30, which is housed through the opening 202, together with the terminal portion 211, and is configured to release the holding of the conductive member 30 by a jig 40 housed in the connection portion 21 through the opening 203. Part of the jig 40 is fixed to the housing 101 of the first terminal block 10 and extends to the outside of the housing 101 through the opening 103. Part of the portion of the jig 40 located outside the housing 101 is housed inside the connection portion 21 through the opening 203 of the housing 201. By bringing the first terminal block 10 and the second terminal block 20 closer together, the jig 40 comes into contact with the leaf spring 212, and the holding of the conductive member 30 is released. The opening 203 is an example of a second opening.

[0024] Referring to Figure 8, an example of a display process for showing the second normal state using terminal block set 1 will be explained. This display process is performed, for example, by the processor 111 executing a predetermined program stored in the storage device 112.

[0025] As shown in Figure 8, when the display process starts, it is determined whether or not the second terminal block 20 is connected (step S1). Step S1 is repeated until it is determined that the second terminal block 20 is connected. The determination unit 11 determines that the second terminal block 20 is connected, for example, in the cases shown below. • When a predetermined signal is received from the second terminal block 20. • When the user initiates the display process on the first terminal block 10.

[0026] When it is determined that the second terminal block 20 is connected, the determination unit 11 acquires the first voltage or the second voltage (step S2). Once the voltage is acquired, the determination unit 11 determines whether the acquired voltage is normal or not (step S3). Whether the acquired voltage is normal or not is determined, for example, by whether the acquired voltage is above a predetermined threshold. The predetermined threshold for voltage is set, for example, by the specifications of the second terminal block 20.

[0027] If the acquired voltage is determined to be normal, the determination unit 11 causes the display unit 12 to display "The acquired voltage is normal" (step S4).

[0028] If the voltage obtained in step S3 is not determined to be normal, or if the display unit 12 displays "The obtained voltage is normal" in step S4, the determination unit 11 determines whether or not to terminate the display process (step S5). The determination unit 11 determines to terminate the display process in the following cases, for example. - If a predetermined signal output from the second terminal block 20 is not received for a predetermined period of time or longer. - When the user performs an operation to terminate the display process on the first terminal block 10.

[0029] If it is determined that the display process should be terminated, the display process is terminated. If it is not determined that the display process should be terminated, the process returns to step S2 and the first or second voltage is acquired. If the display unit 12 displays "The acquired voltage is normal" in step S4, the process returns to step S2 with "The acquired voltage is normal" still displayed on the display unit 12. If, while "The acquired voltage is normal" is displayed on the display unit 12, it is not determined that the acquired voltage is normal in step S3, the determination unit 11 terminates the display of "The acquired voltage is normal" on the display unit 12.

[0030] The first terminal block 10 can provide the following effects:

[0031] A first terminal block, electrically connectable to other terminal blocks, comprises a determination unit 11 and a display unit 12. The determination unit 11 is configured to determine whether a first voltage or a second voltage is normal. The display unit 12 is configured to display that the first voltage or the second voltage is normal when it is determined that the first voltage or the second voltage is normal. With this configuration, a terminal block capable of displaying whether the input and output voltages to other terminal blocks are normal can be realized.

[0032] The display unit 12 includes a light-emitting element 121. The determination unit 11 is configured to illuminate the light-emitting element 121 when it is determined that the first voltage or the second voltage is normal. This configuration makes it possible to more reliably realize a terminal block that can indicate whether the input and output voltages to other terminal blocks are normal.

[0033] Terminal block set 1 can provide the following benefits:

[0034] The terminal block set 1 comprises a first terminal block 10, a second terminal block 20, and a conductive member 30 that electrically connects the first terminal block 10 and the second terminal block 20. With this configuration, a terminal block set 1 can be realized that can indicate on the first terminal block 10 whether the first voltage or the second voltage is normal.

[0035] The second terminal block 20 includes a housing 201. The housing 201 is capable of accommodating a portion of the conductive member 30, holding a portion of the accommodated conductive member 30, and releasing the holding of the conductive member 30 by a jig 40. The housing 201 has a first opening 202 into which the conductive member 30 can be inserted, and a second opening 203 provided adjacent to the first opening 202 and configured to allow the jig 40 to be inserted. With this configuration, a terminal block set 1 capable of displaying on the first terminal block 10 that the first voltage or the second voltage is normal can be realized more reliably.

[0036] The jig 40 is fixed to the first terminal block 10. This configuration makes it possible to more reliably realize a terminal block set 1 that can indicate on the first terminal block 10 whether the first voltage or the second voltage is normal.

[0037] Terminal block set 1, the first terminal block 10, and the second terminal block 20 can be configured as follows.

[0038] This disclosure is applicable not only to push-in type terminal blocks but also to other types of terminal blocks, such as screw-type terminal blocks.

[0039] The length of the conductive member 30 can be changed as desired. Depending on the length of the conductive member 30, the jig 40 may be used fixed to the first terminal block 10 or detached from the first terminal block 10.

[0040] The display unit 12 is not limited to including the light-emitting element 121, and can employ any configuration capable of displaying a first normal state or a second normal state. For example, the display unit 12 may include a configuration capable of outputting sound in addition to the light-emitting element 121.

[0041] The connection portion 21 of the second terminal block 20 can be configured in any way that allows it to accommodate a portion of the conductive member 30, hold a portion of the accommodated conductive member 30, and release the holding of the conductive member 30 by the jig 40. The configuration of the jig 40 can be changed according to the configuration of the connection portion 21 of the second terminal block 20.

[0042] For example, as shown in Figure 9, the jig 40 can be configured to have multiple protrusions 41 that can be simultaneously inserted into multiple second openings 203 of the second terminal block 20. The jig 40 is configured to have at least the same number of protrusions 41 as the conductive members 30 housed in the connection portion 21 via the second openings 203 of the second terminal block 20. When conductive members 30 are inserted into all five second openings 203 of the second terminal block 20 in Figure 2, the jig 40 is configured to have at least five protrusions 41. This configuration makes it possible to more reliably realize a terminal block set 1 that can indicate on the first terminal block 10 that the first voltage or second voltage is normal.

[0043] The display unit 12 may be configured to display that the first voltage or the second voltage has been determined to be abnormal when the first voltage or the second voltage is determined to be abnormal. An example of the determination unit 11 in this case is shown in Figures 10 to 12. In the example shown in Figures 10 to 12, the display unit 12 includes a light-emitting element 121, and the determination unit 11 is configured to make the light-emitting element 121 light up when the first voltage or the second voltage is determined to be normal. By configuring as shown in Figures 10 to 12, a terminal block capable of displaying that the input / output voltage to other terminal blocks has been determined to be abnormal can be realized. The display unit 12 is not limited to including the light-emitting element 121; it may also have other configurations that do not include the light-emitting element 121.

[0044] Figure 10 shows an example of the circuitry constituting the determination unit 11. The determination unit 11 includes a CPU 113 and a rectifier circuit 114. The CPU 113 is configured to control the lighting and extinguishing of the light-emitting element 121. The CPU 113 may be, for example, part of or all of the processor 111, or it may be a separate configuration from the processor 111.

[0045] When the determination unit 11 determines that the first voltage or the second voltage is abnormal, the display unit 12 displays that the first voltage or the second voltage has been determined to be abnormal via the light-emitting element 121. For example, the determination unit 11 (i.e., the CPU 113) controls the light-emitting element 121 to make it blink. This indicates that the first voltage or the second voltage has been determined to be abnormal. This configuration makes it possible to more reliably inform the user that the input / output voltage to other terminal blocks has been determined to be abnormal.

[0046] The determination unit 11 may be configured to blink the light-emitting element 121 in a plurality of different modes. In this case, each mode of blinking of the light-emitting element 121 is associated with a different abnormality in the first or second voltage. For example, in a power supply with a rated input voltage of 100 to 240 VAC and an allowable voltage range of 85 to 264 VAC, the determination unit 11 may be configured to blink the light-emitting element 121 at different speeds depending on whether the first or second voltage is in the 85 to 100 VAC range or exceeds 240 VAC. If the first or second voltage is in the 85 to 100 VAC range and is determined to be abnormal, the CPU 113 blinks the light-emitting element 121 at a slow speed. If the first or second voltage is in the range exceeding 240 VAC and is determined to be abnormal, the CPU 113 blinks the light-emitting element 121 at a high speed. In other words, the slow blinking of the light-emitting element is associated with an abnormality when the first or second voltage is in the 85 to 100 VAC range. The rapid flashing of the light-emitting element is associated with an abnormality when the first or second voltage exceeds 240VAC. This configuration allows for more reliable notification to the user that the input / output voltages to other terminal blocks have been determined to be abnormal.

[0047] In Figure 10, as an example, the display unit 12 includes a 7-segment display device 125. The 7-segment display device 125 is connected to the CPU 113 and is configured to display the voltage value of the acquired first voltage or second voltage. This configuration allows for more reliable notification to the user that the input / output voltage to other terminal blocks has been determined to be abnormal. The display unit 12 does not necessarily have to include the 7-segment display device 125.

[0048] Figure 11 shows an example of the circuitry constituting the determination unit 11. The determination unit 11 includes a control circuit 115 instead of the comparator IC 110. The control circuit 115 is configured to control the brightness of the light-emitting element 121. For example, the control circuit 115 changes the ON duty cycle in response to the voltage rise, thereby changing the ON time of the light-emitting element 121. In the case of a power supply with a rated input voltage of 100 to 240 VAC and an allowable voltage range of 85 to 264 VAC, the control circuit 115 starts lighting the light-emitting element 121 when the first or second voltage is 85 VAC, and increases the brightness of the light-emitting element 121 in proportion to the rise in the first or second voltage. With this configuration, it is possible to more reliably notify the user that the input / output voltage to other terminal blocks has been determined to be abnormal.

[0049] Figure 12 shows an example of a first terminal block 10 equipped with a three-phase AC circuit 14. In the first terminal block 10 of Figure 12, the display unit 12 includes three light-emitting elements 121. Each light-emitting element 121 is located in one of the three phases of the three-phase AC circuit 14. As an example, the determination unit 11 includes three CPUs 113 that control each light-emitting element 121. Each CPU 113 is associated with one light-emitting element 121 and is located in the same phase as the associated light-emitting element 121 in the three-phase AC circuit 14. With this configuration, the determination unit 11 can also determine whether or not the three-phase AC circuit 14 is in a phase loss state.

[0050] The terminal block set 1 includes a first terminal block 10 with the configuration shown in Figures 10 to 12. This configuration makes it possible to realize a terminal block set 1 that can display on the first terminal block 10 that the input / output voltage to other terminal blocks has been determined to be abnormal.

[0051] Having described in detail various embodiments of this disclosure with reference to the drawings above, we will now conclude by describing various aspects of this disclosure. In the following description, reference numerals are used as an example.

[0052] A terminal block according to a first-first aspect of this disclosure is A terminal block that can be electrically connected to other terminal blocks, A determination unit 11 is configured to determine whether the first voltage output to the other connected terminal block, or the second voltage input from the other connected terminal block, is normal. When it is determined that the first voltage or the second voltage is normal, a display unit 12 is configured to display that the first voltage or the second voltage is normal. It is equipped with.

[0053] A terminal block according to a second-first aspect of this disclosure is a terminal block according to a first-first aspect, The display unit 12 includes a light-emitting element 121, The determination unit 11 is configured to emit light from the light-emitting element 121 when it determines that the first voltage or the second voltage is normal.

[0054] The terminal block set 1 in the third-first aspect of this disclosure is A first terminal block 10, which is a terminal block described in the first-1 or second-1 embodiment, The aforementioned other terminal block, the second terminal block 20, A conductive member 30 that electrically connects the first terminal block 10 and the second terminal block 20, It is equipped with.

[0055] The terminal block set 1 of the 4-1 aspect of this disclosure is, in the terminal block set 1 of the 3-1 aspect, The second terminal block 20 is The housing 201 includes a connecting portion 21 inside which is capable of accommodating a portion of the conductive member 30, holding a portion of the accommodated conductive member 30, and releasing the holding of the conductive member 30 by a jig 40. The aforementioned housing 201 The first opening 202 is configured to allow the conductive member 30 to be inserted, A second opening 203 is provided adjacent to the first opening 202 and is configured to allow insertion of the jig 40. It has.

[0056] The terminal block set 1 of aspect 5-1 of this disclosure is, in the terminal block set 1 of aspect 4-1, The jig 40 is fixed to the first terminal block 10.

[0057] The terminal block set 1 of aspect 6-1 of this disclosure is, in the terminal block set 1 of aspect 4-1 or aspect 5-1, The aforementioned housing 201 Multiple first openings 202, A plurality of second openings 203 corresponding to each of the plurality of first openings 202 and It has, The jig 40 is It has multiple protrusions 41 that can be inserted simultaneously into multiple second openings 203.

[0058] The terminal block set 1 of aspect 7-1 of this disclosure is, in the terminal block set 1 of aspect 6-1, The jig 40 has at least the same number of protrusions 41 as the conductive member 30.

[0059] The terminal blocks of the first and second aspects of this disclosure are: A terminal block that can be electrically connected to other terminal blocks, A determination unit 11 is configured to determine whether the first voltage output to the other connected terminal block, or the second voltage input from the other connected terminal block, is normal or abnormal. If the first voltage or the second voltage is determined to be abnormal, a display unit 12 that indicates that the first voltage or the second voltage has been determined to be abnormal is provided. It is equipped with.

[0060] The terminal block of the second-second aspect of this disclosure is a terminal block of the first-second aspect, The display unit 12 includes a light-emitting element 121, The determination unit 11 flashes the light-emitting element 121 to indicate that it has determined that the first voltage or the second voltage is abnormal.

[0061] The terminal block of the third-second aspect of this disclosure is a terminal block of the second-second aspect, The determination unit 11 is configured to make the light-emitting element 121 blink in a plurality of different ways, Each mode of flashing of the light-emitting element 121 is associated with a different abnormality in the first voltage or the second voltage, respectively.

[0062] The terminal block of the 4-2 aspect of this disclosure is a terminal block of the 1-2 aspect, The display unit 12 includes a light-emitting element 121, The determination unit 11 changes the brightness of the light-emitting element 121 to indicate that it has been determined that the first voltage or the second voltage is not normal.

[0063] The terminal block of aspect 5-2 of this disclosure is a terminal block of aspect 1-2, The display unit 12 includes a 7-segment display device 125.

[0064] The terminal block of the 6-2 aspect of this disclosure is a terminal block of the 1-2 aspect, The terminal block is equipped with a three-phase AC circuit 14. The display unit 12 includes three light-emitting elements 121, Each of the three light-emitting elements 121 is located in one of the three phases of the three-phase AC circuit 14.

[0065] A terminal block set 1 according to a 7-2 aspect of this disclosure is A first terminal block 10, which is a terminal block described in any of the first to sixth embodiments, The aforementioned other terminal block, the second terminal block 20, Equipped with, The first terminal block 10 and the second terminal block 20 are electrically connected.

[0066] By appropriately combining any embodiment or modification from the various embodiments or modifications described above, the effects of each can be achieved. Furthermore, combinations of embodiments with each other, combinations of examples with each other, and combinations of embodiments with examples are possible, as well as combinations of features from different embodiments or examples.

[0067] Although this disclosure has been described in some detail for each embodiment, the details of the configuration of these embodiments are bound to change, and changes in the combination and order of elements in each embodiment can be realized without departing from the claimed scope and spirit of this disclosure. [Industrial applicability]

[0068] This disclosure can be applied, for example, to terminal blocks mounted on control panels or power supply units. [Explanation of symbols]

[0069] 1 Terminal block set 2 Power supply 10 1st terminal block 11 Judgment section 111 processors 112 Storage device 113 CPU 114 Rectifier circuit 115 Control circuit 12 Display section 121 Light-emitting element 122 LED 123 Light guide member 124 circuit boards 13 Connection part 131 Terminal section 14 Three-phase AC circuit 20 2nd terminal block 21 Connection part 211 Terminal section 30 Conductive member 40 jigs 101, 201 Housing 102, 103, 202, 203 Openings

Claims

1. A terminal block that can be electrically connected to other terminal blocks, A determination unit configured to determine whether the first voltage output to the other connected terminal block, or the second voltage input from the other connected terminal block, is normal or abnormal, If the first voltage or the second voltage is determined to be abnormal, a display unit that indicates that the first voltage or the second voltage has been determined to be abnormal is provided. A terminal block equipped with the following features.

2. The display unit includes a light-emitting element, The terminal block according to claim 1, wherein the determination unit causes the light-emitting element to blink, indicating that it has been determined that the first voltage or the second voltage is abnormal.

3. The determination unit is configured to make the light-emitting element blink in a plurality of different modes, The terminal block according to claim 2, wherein each mode of flashing of the light-emitting element is associated with a different abnormality of the first voltage or the second voltage.

4. The display unit includes a light-emitting element, The terminal block according to claim 1, wherein the determination unit changes the brightness of the light-emitting element to indicate that it has been determined that the first voltage or the second voltage is not normal.

5. The terminal block according to claim 1, wherein the display unit includes a 7-segment display device.

6. The terminal block is equipped with a three-phase AC circuit, The display unit includes three light-emitting elements, The terminal block according to claim 1, wherein each of the three light-emitting elements is located in one of the three phases of the three-phase AC circuit.

7. A first terminal block which is a terminal block according to any one of claims 1 to 6, The second terminal block, which is the other terminal block mentioned above, Equipped with, A terminal block set in which the first terminal block and the second terminal block are electrically connected.

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