JP2021158737A - Quick connection terminal unit, and switchboard - Google Patents

Abstract

To provide a quick connection terminal unit and a switchboard that perform display to facilitate connecting work of electric wires and reduce anxiety of a worker.SOLUTION: A quick connection terminal unit 6 includes: a case 60 having an electric wire insertion hole 63 into which an electric wire S is inserted; a quick connection terminal portion 62 that holds the electric wire S inserted into the electric wire insertion hole 63; and a display member 65 that comes into contact with the electric wire S inserted into the electric wire insertion hole 63 and rotates about a rotation axis C1 to display the insertion state of the electric wire S. The display member 65 is configured so that the posture can be changed by rotating to either of a first posture p1 in which it is inserted into the electric wire insertion hole 63 and enters a path R of the electric wire S that passes through the quick connection terminal portion 62 or a second posture p2 in which it is evacuated from the path R of the electric wire S. The display member 65 changes the posture from the first posture p1 to the second posture p2 according to the increase in the insertion amount of the electric wire S and does not change the posture in the second posture p2 regardless of the insertion amount of the electric wire S.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to, for example, a quick-connect terminal unit used when connecting an electric wire to a band-shaped conductor (for example, a copper band) arranged on a switchboard, and a switchboard.

As illustrated in Patent Document 1, the switchboard has a plurality of molded case circuit breakers and a strip-shaped conductor such as a copper band that forms a part of a circuit portion of the switchboard. The strip conductor is used as a ground, and the electric wire is electrically connected to the strip conductor. In order to facilitate the electrical connection of the electric wire to the strip-shaped conductor, a quick-connect terminal unit that sandwiches the electric wire is attached to the strip-shaped conductor.

Patent Document 2 discloses an example in which a quick-connect terminal unit is incorporated in a circuit breaker.

Japanese Unexamined Patent Publication No. 2019-149898 JP-A-2002-109984

The procedure for connecting the electric wire to the quick connection terminal unit is as follows. Peel off the wire coating for a predetermined length, then insert the stripped wire into the wire insertion hole of the quick-connect terminal unit, and then look at the display that displays the insertion status of the wire in the quick-connect terminal unit. , Check if the wires are inserted properly. Here, it is considered that the conventional quick-connect terminal unit has at least one of the following problems (1) and (2).

(1) It is considered that both under-insertion of electric wire and over-insertion of electric wire are not preferable. bad.
(2) Since the display unit moves according to the insertion amount of the electric wire, if the insertion amount of the electric wire varies, the appearance of the display unit varies for the user, and it is assumed that the electric wire is properly inserted. However, I feel uneasy about the inserted state.

The present disclosure provides a quick-connect terminal unit and a switchboard that facilitate the work of connecting electric wires and reduce anxiety of an operator.

The quick-connect terminal unit of the present disclosure includes a case having an electric wire insertion hole into which an electric wire is inserted, a quick-connection terminal portion for holding the electric wire inserted into the electric wire insertion hole, and the electric wire inserted into the electric wire insertion hole. The display member is provided with a display member that is in contact with the wire and rotates about the rotation axis to display the insertion state of the electric wire. The posture can be changed by rotation to either the first posture of entering or the second posture retracted from the path of the electric wire, and the display member responds to an increase in the insertion amount of the electric wire. The posture is changed from the first posture to the second posture, and the posture is not changed in the second posture regardless of the insertion amount of the electric wire.

The perspective view which shows the switchboard of this disclosure. The front view which shows the 1st conductor, the 2nd conductor, the circuit breaker and the quick connection terminal unit which comprises the switchboard of this disclosure. FIG. 5 is a cross-sectional view showing a first conductor, a second conductor, a circuit breaker, and a quick-connect terminal unit. Front view, side view, and rear view showing the quick-connect terminal unit. FIG. 4 is a cross-sectional view taken along the line A1-A1 in FIG. (A) Indicates a state in which the electric wire is not inserted. (B) Indicates a state in which an electric wire is inserted. FIG. 4 is a cross-sectional view taken along the line A2-A2 in FIG. FIG. 4 is a cross-sectional view taken along the line A1-A1 of FIG. 4 showing a method of assembling the quick-connect terminal unit. An exploded perspective view showing an assembly method of the quick-connect terminal unit. A front view and a side view showing a quick-connect terminal unit mounted in the first orientation. A front view and a side view showing a quick-connect terminal unit mounted in the second orientation.

An embodiment of the present disclosure will be described with reference to the drawings.

As shown in FIG. 1, the switchboard has a plurality of circuit breakers 1 having an operation switch 10, a housing 2 having an opening 20 for accommodating the plurality of circuit breakers 1 and facing the front side X1, and an opening of the housing 2. It has a door 3 capable of closing 20 and a door 3. As shown in FIGS. 1 and 3, the operation switch 10 of the circuit breaker 1 can be switched between the on state and the off state in order to open and close the contacts, and the front surface is attached to the housing 2 side. It protrudes toward the side X1. As shown in FIG. 1, the housing 2 has a box shape having an opening 20, and the top plate portion 21, the back plate portion 22, the side plate portion 23, and the bottom plate portion 24 accommodate the electric devices including the circuit breaker 1. It forms a space. As shown in FIG. 3, each electric device (including the circuit breaker 1) constituting the switchboard is attached to a middle plate (not shown), and the middle plate is attached to a back plate portion (not shown) of the housing 2. As shown in FIG. 1, a door 3 is attached to a side plate portion 23 so as to be openable and closable on the front side X1 of the electric device including the circuit breaker 1. A viewing window 30 corresponding to the circuit breaker 1 is formed in the door 3, and the operation switch 10 of the circuit breaker 1 is opened (exposed) from the viewing window 30 to the front side X1. The door 3 is provided to shield the conductive portion of the electric device inside to ensure safety and improve the appearance. In the present embodiment, the door 3 is a double door, but the door 3 is not limited to this. For example, it may be a single door.

As shown in FIGS. 2 and 3, the switchboard has a plurality of circuit breakers 1 and a strip-shaped conductor 5 such as a copper strip that forms a part of a circuit portion of the switchboard. The electric wire S drawn from the outside of the switchboard or connecting the equipment in the switchboard is electrically connected to the circuit breaker 1 or the strip-shaped conductor 5. In order to facilitate the work of connecting the electric wire S to the circuit breaker 1, the circuit breaker 1 is provided with a quick connection terminal portion. Further, in order to facilitate the work of electrically connecting the strip-shaped conductor 5 and the electric wire S, the quick-connect terminal unit 6 is provided.

Since the wiring of the electric wires is appropriately changed according to the specifications, the electric wires may not be wired at the time of shipment of the switchboard, and FIG. 2 is a front view showing the state of the wiring.

A plurality of strip-shaped conductors 5 are provided as grounds and are arranged in parallel with each other. In this embodiment, two conductors are arranged, one is provided as a first conductor 5a for ELCB (Earth Leakage Circuit Breaker) and the other is provided as a second conductor 5b for ED (class D grounding). It is provided, but is not limited to this. The longitudinal direction of the strip-shaped conductor 5 is arranged along the vertical direction (Y1, Y2) with respect to the housing 2. FIG. 2 shows the vertical direction, and FIG. 3 shows the method perpendicular to the paper surface. The first conductor 5a and the second conductor 5b have the same position (height) in the depth direction when the front side X1 and the back side X2 are viewed.

<Quick connection terminal unit>
As shown in FIG. 3, the quick-connect terminal unit 6 is arranged on the front side X1 of the first conductor 5a and the second conductor 5b. As shown in FIGS. 4, 5 (a) and 5 (b), the quick-connect terminal unit 6 is housed in the case 60, one quick-connect terminal portion 62 housed in the case 60, and the case 60. Display member 65 and

The case 60 is formed in a box shape, and one electric wire insertion hole 63 is formed on a surface that becomes the front side X1 when attached to the switchboard. The quick connection terminal portion 62 holds the electric wire S inserted into the electric wire insertion hole 63. Specifically, the quick-connect terminal portion 62 has a terminal plate 62a that is electrically connected to the electric wire S, and an elastic member 62b that presses the electric wire S toward the terminal plate 62a. The electric wire S is sandwiched and fixed by the terminal plate 62a and the elastic member 62b. The quick-connect terminal unit 6 has a release operation unit 64 for inputting a release operation for separating the electric wire S from the sandwiching structure (terminal plate 62a and elastic member 62b) of the quick-connection terminal unit 62. By operating the release operation unit 64, the inserted electric wire S can be freely inserted and removed. Specifically, by pushing the release operation unit 64 inside the case 60, the release operation unit 64 comes into contact with the elastic member 62b, and the locking end of the elastic member 62b that prevents the electric wire S from coming off is from the electric wire S. Separate. This makes it possible to disconnect and disconnect the electric wire S.

The display member 65 comes into contact with the electric wire S inserted into the electric wire insertion hole 63 and rotates about the rotation shaft C1 to display the insertion state of the electric wire S. Specifically, the shaft portion 65b of the display member 65 is rotatably supported by the case 60 around the rotation shaft C1. The display member 65 has a display end portion 65a extending from the shaft portion 65b to display the insertion state, and an electric wire contact end portion 65c extending from the shaft portion 65b and capable of coming into contact with the electric wire S. A viewing window 60h is formed in the case 60. The display member 65 displays the insertion state of the electric wire S depending on whether or not the display end portion 65a of the display member 65 can be visually recognized from the outside through the window 60h. The display end portion 65a is provided with a color (for example, yellow or red) different from that of other parts of the display member 65. In the present embodiment, when the display end portion 65a occupies the entire viewing window 60h and can be visually recognized, it means that the electric wire S is in an appropriate connection state. When the display end portion 65a cannot be visually recognized from the viewing window 60h, or when the display end portion 65a occupies only a part of the viewing window 60h and is visually recognized, it means that the electric wire S is insufficiently inserted.

As shown in FIGS. 4 and 6, the quick connection terminal unit 6 has a connection terminal 61. The connection terminal 61 is electrically connected to the terminal plate 62a of the quick connection terminal portion 62 and is exposed to the back side X2 of the case 60. The terminal plate 62a of the quick-connect terminal portion 62 is electrically connected to the connection terminal 61 (see FIG. 6). The case 60 of the quick-connect terminal unit 6 is made of an insulating member (for example, resin), but if an appropriate electrical path from the terminal plate 62a to the connection terminal 61 can be secured, the case 60 can be insulated. The material of the material can be changed arbitrarily. The front side X1 of the case 60 is provided with a strip gauge 66b indicating a dimension for stripping the coating of the electric wire S and a display 66a indicating a suitable electric wire diameter.

The quick-connect terminal unit 6 includes a return portion 65d that applies an elastic rebound force toward the first posture p1 to the display member 65. The return portion 65d urges the display member 65 using the inner wall of the case 60 as a scaffold. In the present embodiment, the return portion 65d is integrally formed with the display member 65, and the return portion 65d and the display member 65 are the same member, although not particularly limited. Although not particularly limited, the display member 65 is made of resin. The display member 65 and the return portion 65d may be separate members.

As shown in FIGS. 5A and 5B, the display member 65 is configured so that the posture can be changed by rotation to either the first posture p1 or the second posture p2. As shown in FIG. 5A, the first posture p1 is a posture in which the wire S is inserted into the wire insertion hole 63 and passes through the quick connection terminal portion 62 to enter the path R of the wire S. The path of the electric wire S is a space through which the electric wire S defined by the electric wire insertion hole 63, the terminal plate 62a, and the inner wall of the case 60 can pass, and is often a columnar shape corresponding to the specified thickness of the electric wire. Although not particularly limited, it is preferable that the insertion / removal direction RD of the electric wire S is linear. In the present embodiment, the specified thickness of the electric wire is φ1.6 mm to φ2.0 mm, although it is not particularly limited. The specified thickness of the electric wire is merely an example, and is not limited to this, and can be changed as appropriate. For example, φ2.6 mm or the like can be considered. The display member 65 in the first posture p1 can come into contact with the inserted electric wire S. As shown in FIG. 5B, the second posture p2 is a posture retracted from the path R of the electric wire S.

In the display member 65 in the first posture p1 shown in FIG. 5A, the electric wire contact end portion 65c is pushed by the electric wire S as the insertion amount of the electric wire S increases, and the elastic repulsive force due to the return portion 65d is countered. At the same time, the posture is changed from the first posture p1 to the second posture p2. In the second posture p2 shown in FIG. 5B, even if the insertion amount of the electric wire S is further increased, the electric wire S does not push the electric wire contact end portion 65c along the insertion / removal direction RD of the electric wire. Do not change the posture regardless of the amount of insertion. The display member 65 does not hinder the further intrusion of the electric wire S. The display member 65 is given a force to return to the first posture p1 by the return portion 65d, but the posture of the display member 65 is held in the second posture p2 by the electric wire S in contact with the electric wire contact end portion 65c. When the electric wire S is pulled out, the return portion 65d returns to the first posture p1.

As described above, in the present embodiment, if the insertion amount of the electric wire S is insufficient, the display end portion 65a is not exposed through the viewing window 60h or the exposure is insufficient, so that the insertion amount of the electric wire S is insufficient. It is easy for workers to understand what they are doing. Further, in the present embodiment, the degree of exposure of the display end portion 65a is the same both when the insertion amount of the electric wire S is appropriate and when the electric wire S is inserted too much. That is, excessive insertion of the electric wire S is allowed.

As shown in FIG. 5B, in the second posture p2, the display end portion 65a does not come into contact with the case 60, and a gap is provided between the display end portion 65a and the case 60. If the display end portion 65a comes into contact with the case 60 in the second posture p2, the force input from the case 60 to the display end portion 65a and the force input from the electric wire S to the electric wire contact end portion 65c contradict each other. This is the direction, and a load is generated on the display member 65. If the display end portion 65a does not come into contact with the case 60 in the second posture p2, the load can be eliminated and the durability of the display member 65 can be improved.

<Easy to assemble structure>
As shown in FIGS. 5 to 8, the case 60 is a divided body having a case main body 60a and a case lid 60b. Claws and concave grooves that fit each other are formed between the case body 60a and the case lid 60b, and the case lid 60b is fixed to the case body 60a by fitting the claws and the concave grooves. The case body 60a is formed in a box shape having an internal space SP1 for accommodating a quick-connect terminal portion 62 (terminal plate 62a, elastic member 62b) and a display member 65. The case lid 60b closes the internal space SP1. The case body 60a is arranged on the insertion side RD1 of the electric wire S in the insertion / removal direction RD, and the case lid 60b is arranged on the insertion side RD2 of the electric wire S in the insertion / removal direction RD. That is, the insertion / removal direction RD of the electric wire S and the opening / closing direction of the case coincide with each other.

The quick-connect terminal portion 62 (terminal plate 62a, elastic member 62b) is sandwiched between the case body 60a and the case lid 60b, and by contacting the case body 60a and the case lid 60b, the position of the insertion / removal direction RD is fixed. ing. This does not mean that the quick-connect terminal portion 62 is in constant contact with at least one of the case body 60a and the case lid 60b. The display member 65 has a shaft portion 65b having a rotation shaft C1 (see FIG. 8). The shaft portion 65b is rotatably supported while being sandwiched between the arc recess of the case body 60a and the arc recess of the case lid 60b. In the present embodiment, the arc recess rotatably supports the display member 65, but is not limited thereto. For example, if the display member 65 can be rotatably supported, the shape can be changed to a V-shape, a U-shape, or the like without being limited to an arc.

As shown in FIG. 5, a part of the display member 65 (electric wire contact end portion 65c) is arranged on the case lid side RD2 rather than the quick connection terminal portion 62. The display member 65 partially overlaps the quick-connect terminal portion 62 (particularly the terminal plate 62a) when viewed along the insertion / removal direction RD of the electric wire S (when viewed from the case lid side). As a result, since the quick-connect terminal portion 62 (particularly the terminal plate 62a) is arranged behind the display member 65, the quick-connect terminal portion 62 (particularly the terminal plate 62a) must be removed from the case body 60a. Is prevented from coming off the case body 60a, and a large number of parts are less likely to come off during assembly, which makes it possible to facilitate assembly.

As an assembly method, as shown in FIGS. 7 and 8, first, the terminal plate 62a is inserted into the internal space SP1 of the case body 60a, and then the internal space surrounded by the case body 60a and the terminal plate 62a. The elastic member 62b is inserted into SP1, and then the display member 65 is inserted into the internal space SP1. At this time, the shaft portion 65b of the display member 65 is brought into contact with the corresponding arc recess of the case body 60a. Next, the case lid 60b is attached to the case body 60a. At this time, the arc recess formed in the case lid 60b is fitted into the shaft portion 65b of the display member 65, the shaft portion 65b is sandwiched between the arc recesses of the case body 60a and the case lid 60b, and the display member 65 is rotatably supported. do. As a result, the quick-connect terminal portion 62 and the display member 65 are inserted into the internal space SP1, and the case lid 60b is attached to the structure so that the assembly can be facilitated.

<Mounting structure of quick connection terminal unit 6>
As shown in FIG. 9A, the quick-connect terminal unit 6 connects to the first conductor 5a or the second conductor 5b in the first direction p3 in which the connection terminal 61 conducts to the first conductor 5a and does not conduct to the second conductor 5b. It is configured to be mountable. Further, as shown in FIG. 9B, in the quick-connect terminal unit 6, the first conductor 5a or the second conductor in the second direction p4 in which the connection terminal 61 conducts to the second conductor 5b and does not conduct to the first conductor 5a. It is configured so that it can be attached to 5b. In the embodiment shown in FIGS. 9A and 9B, the quick-connecting terminal unit 6 is attached to the first conductor 5a in the first orientation p3, and the quick-connecting terminal unit 6 is attached to the second conductor 5b in the second orientation p4. However, it is not limited to this. For example, by changing the location of the connection terminal 61 exposed on the back side X2 of the case 60, the quick-connect terminal unit 6 is attached to the second conductor 5b in the first orientation p3, and in the second orientation p4. It is also possible to configure the quick-connect terminal unit 6 to be attached to the first conductor 5a.

As shown in FIGS. 9A and 9B, the electric wire insertion hole 63 is arranged at a position eccentric from the center C2 of the case 60 in front view. According to such an arrangement of the electric wire insertion hole 63, the position of the electric wire insertion hole 63 becomes either of two predetermined positions (right side or left side) as shown in FIG. 2 depending on the orientation of the quick connection terminal unit 6. , It is possible to grasp at a glance which of the first conductor 5a and the second conductor 5b is conducting, and it is possible to improve workability.

As shown in FIG. 9A, when the electric wire S is inserted into the electric wire insertion hole 63 of the quick-connecting terminal unit 6 in the first orientation p3, the electric wire S becomes the first through the quick-connecting terminal portion 62 and the connection terminal 61. It is electrically connected to the 1 conductor 5a, and the electric wire S is not conducted with the second conductor 5b and is in an insulated state (see path L). On the other hand, as shown in FIG. 9B, if the electric wire S is inserted into the electric wire insertion hole 63 of the quick connecting terminal unit 6 in the second direction p4, the electric wire S is passed through the quick connecting terminal portion 62 and the connection terminal 61. Is electrically connected to the second conductor 5b, and the electric wire S is not conducted with the first conductor 5a and is in an insulated state (see path L).

According to such a structure, one quick-connecting terminal unit 6 can be used, and connection to two types of strip-shaped conductors 5 (earth) can be selected only by changing the mounting direction of the quick-connecting terminal unit 6. Moreover, since the quick connection terminal portion 62 that is connected only by inserting the electric wire S is adopted, the connection work becomes easy. Nevertheless, since only one electric wire insertion hole 63 is formed in one quick connection terminal unit 6, there is no mistake as compared with the case where a plurality of electric wire insertion holes 63 are present.

Next, a method of fixing the quick-connect terminal unit 6 will be described.

As shown in FIGS. 4, 9A and 9B, thread grooves 5s are formed in the first conductor 5a and the second conductor 5b. The case 60 of the quick-connect terminal unit 6 is provided with a bolt hole 67 on one side SP3 and a positioning projection 68 is formed on the other side SP4 and the back side X2 when viewed from the front. The quick-connect terminal unit 6 is fastened to the first conductor 5a or the second conductor 5b with a headed bolt 71 inserted into the screw groove 5s. In the example of FIG. 9A, the quick-connect terminal unit 6 is fastened to the first conductor 5a, and in the example of FIG. 9B, the quick-connect terminal unit 6 is fastened to the second conductor 5b. With the screw groove 5s and the headed bolt 71 inserted into the screw groove 5s, the fixing work becomes easier as compared with the bolt / nut structure.

In some cases, it may be required to easily determine which part of the strip-shaped conductor 5 the electric wire as the ground wire corresponding to which circuit breaker 1 is attached. In that case, as shown in FIG. 2, a plurality of circuit breakers 1 and quick-connect terminal units 6 are arranged along the longitudinal direction of the first conductor 5a and the second conductor 5b, and a plurality of circuit breakers 1 and a plurality of quick-connect terminal units 6 are arranged in the front view. It is preferable that the arrangement interval D1 of the circuit breaker 1 and the arrangement interval D2 of the plurality of quick-connect terminal units 6 are the same.

As described above, the quick-connect terminal unit 6 of the present embodiment includes a case 60 having an electric wire insertion hole 63 into which the electric wire S is inserted, and a quick-connect terminal portion 62 for holding the electric wire S inserted into the electric wire insertion hole 63. A display member 65 that comes into contact with the electric wire S inserted into the electric wire insertion hole 63 and rotates about the rotation shaft C1 to display the insertion state of the electric wire S, and the display member 65 is inserted into the electric wire insertion hole 63. The posture can be changed by rotation to either the first posture p1 that enters the path R of the electric wire S passing through the quick connection terminal portion 62 and the second posture p2 that is retracted from the path R of the electric wire S. The display member 65 changes its posture from the first posture p1 to the second posture p2 according to the increase in the insertion amount of the electric wire S, and does not change the posture in the second posture p2 regardless of the insertion amount of the electric wire S. preferable.

According to this configuration, the display member 65 changes its posture from the first posture p1 to the second posture p2 according to the increase in the insertion amount of the electric wire S, and the display member 65 retracts from the path of the electric wire S. Over-insertion is allowed. If the electric wire S is allowed to be inserted too much, the allowable amount of the dimension for removing the coating of the electric wire S increases, so that the work of stripping the coating can be simplified and the work of connecting the electric wires can be facilitated.
Nevertheless, since the display member 65 does not change its posture in the second posture p2 regardless of the insertion amount of the electric wire S, the display when the insertion amount of the electric wire S is appropriate and when the electric wire S is excessively inserted is the same. Since the display member 65 displays only the insufficiently inserted state of the electric wire S or the other two states, it is possible to reduce the anxiety of the operator.

Although not particularly limited, as in the present embodiment, the display member 65 extends from the shaft portion 65b having the rotating shaft C1 and can come into contact with the electric wire S, and extends from the shaft portion 65b and is in the inserted state. It is preferable that the display end portion 65a for displaying the above is provided, and the display end portion 65a is not in contact with the case 60 in the second posture p2. According to this configuration, the load applied to the display member 65 can be reduced or eliminated, and the durability of the display member 65 can be improved.

Although not particularly limited, as in the present embodiment, a return portion 65d that applies an elastic rebound force toward the first posture p1 to the display member 65 is further provided, and the return portion 65d is integrally formed with the display member 65. It is preferable that the return portion 65d and the display member 65 are the same member. According to this configuration, it is possible to facilitate the assembly work as compared with the case where the return portion 65d and the display member 65 are separate members. Further, for example, by using different materials such as metal and resin, it is possible to avoid that one member is overloaded and the durability is reduced.

Although not particularly limited, as in the present embodiment, the case 60 includes a case body 60a having an internal space SP1 for accommodating the quick-connect terminal portion 62 and the display member 65, and a case lid 60b for closing the internal space SP1. The case body 60a has an electric wire insertion hole 63, and the case lid 60b is arranged on the insertion side RD2 of the insertion / removal direction RD of the electric wire S which is inserted into the electric wire insertion hole 63 and passes through the quick connection terminal portion 62. Is preferable. According to this configuration, the quick-connect terminal portion 62 and the display member 65 are inserted in the internal space SP1, and the case lid 60b is attached to the structure so that the assembly can be facilitated.

Although not particularly limited, it is preferable that the quick-connect terminal portion 62 and the display member 65 are sandwiched between the case main body 60a and the case lid 60b as in the present embodiment. According to this configuration, the quick connection terminal portion 62 and the display member 65 can be fixed only by attaching the case lid 60b, and the assembly can be facilitated.

Although not particularly limited, as in the present embodiment, the display member 65 has a shaft portion 65b having a rotating shaft C1, and the shaft portion 65b is rotatably supported while being sandwiched between the case body 60a and the case lid 60b. It is preferable that it is. As a result, the display member 65 can be rotatably assembled with a simple configuration.

Although not particularly limited, as in the present embodiment, a part of the display member 65 is arranged on the case lid side RD2 of the quick connection terminal portion 62, and the display member 65 is along the insertion / removal direction RD of the electric wire S. It is preferable that the quick-connect terminal portion 62 partially overlaps with the quick-connect terminal portion 62. According to this configuration, when the case lid 60b is removed, the quick-connect terminal portion 62 and the display member 65 are arranged in this order from the back to the front. Therefore, if the display member 65 does not come off, the quick-connect terminal portion 62 It does not come off, and the members are less likely to come off unexpectedly during assembly, making it possible to improve assemblability.

Although not particularly limited, the switchboard of the present embodiment preferably includes a plurality of circuit breakers 1 and the quick-connect terminal unit 6. With such a configuration, it is possible to improve the efficiency of the electric wire connecting work, and further, it is possible to provide a switchboard capable of preventing the wiring error of the electric wire.

The present disclosure is not limited to the above-described embodiment, and various improvements and changes can be made without departing from the spirit of the present disclosure.

For example, in the above description, "front side" and "back side" are described for convenience of explanation, but these meanings are not limited to "front side" and "back side" in the switchboard. In the wire connection structure, the quick-connect terminal unit side means the "front side" and the strip-shaped conductor side means the "back side". Further, in the present embodiment, the quick-connect terminal unit 6 is preferably for grounding, but can be adopted for other than grounding.

60 Case 60a Case body 60b Case lid 62 Quick connection terminal part 63 Wire insertion hole 65 Display member 65a Display end 65b Shaft 65c Wire contact end 65d Return part S Wire C1 Rotating shaft R Wire path p1 First posture p2 No. 2 posture RD insertion / removal direction RD2 Case lid side (insertion side)

Claims (8)

A case having an electric wire insertion hole into which an electric wire is inserted, a quick-connect terminal portion for holding the electric wire inserted into the electric wire insertion hole, and the electric wire inserted into the electric wire insertion hole, which are in contact with each other and rotate about a rotation axis. A display member for displaying the insertion state of the electric wire is provided.
The display member is rotated into either a first posture in which the display member is inserted into the wire insertion hole and enters the path of the wire passing through the quick connection terminal portion, or a second posture in which the display member is retracted from the path of the wire. It is configured so that the posture can be changed.
The display member changes its posture from the first posture to the second posture according to an increase in the insertion amount of the electric wire, and does not change the posture in the second posture regardless of the insertion amount of the electric wire. .. The display member includes an electric wire contact end portion that extends from a shaft portion having the rotating shaft and can come into contact with the electric wire, and a display end portion that extends from the shaft portion and displays the insertion state.
The quick-connect terminal unit according to claim 1, wherein the display end portion is not in contact with the case in the second posture. Further provided with a return portion that applies an elastic rebound force toward the first posture to the display member.
The quick-connect terminal unit according to claim 1 or 2, wherein the return portion is integrally formed with the display member, and the return portion and the display member are the same member. The case has a case body having an internal space for accommodating the quick-connect terminal portion and the display member, and a case lid for closing the internal space.
The case body has the electric wire insertion hole, and the case body has the electric wire insertion hole.
The quick-connecting terminal unit according to any one of claims 1 to 3, wherein the case lid is arranged on the insertion side in the insertion / removal direction of the electric wire that is inserted into the electric wire insertion hole and passes through the quick-connecting terminal portion. The quick-connecting terminal unit according to claim 4, wherein the quick-connecting terminal portion and the display member are sandwiched between the case main body and the case lid. The speed according to claim 4 or 5, wherein the display member has a shaft portion having the rotating shaft, and the shaft portion is rotatably supported while being sandwiched between the case main body and the case lid. Connection terminal unit. A part of the display member is arranged on the case lid side of the quick-connect terminal portion, and the display member is partially connected to the quick-connect terminal portion when viewed along the insertion / removal direction of the electric wire. The quick-connect terminal unit according to any one of claims 4 to 6, which overlaps. A switchboard having a plurality of circuit breakers and the quick-connect terminal unit according to any one of claims 1 to 7.

Images