JP7065408B2 - Wiring fixtures, time switches, and terminal covers - Google Patents

Description

The present disclosure generally relates to wiring fixtures, time switches, and terminal covers. More specifically, the present disclosure relates to a wiring device having a terminal cover covering a terminal to which an electric wire is connected, a time switch, and a terminal cover.

In Patent Document 1, the time when the power supply is installed on the path for electrically connecting the power supply and the electric device and the power supply from the power supply to the electric device is started and the time when the power supply from the power supply to the electric device is stopped are described. The time switch to manage is disclosed. This time switch includes a group of terminals to which a power supply wiring, which is an electric wire connected to a power source, and a device wiring, which is an electric wire connected to an electric device, are connected. The terminal group is housed in the case by screwing the lid to the case while being covered with the lid.

Japanese Unexamined Patent Publication No. 2016-126862

In the time switch (wiring device) described in Patent Document 1, in order to keep the terminal group (terminal) covered with the terminal cover while restricting the opening of the lid (terminal cover) only by human hands. , It is necessary to screw the terminal cover to the case (housing). Therefore, in this wiring device, when opening the terminal cover, it is necessary to remove the screw using a jig, and the screw may fall off from the terminal cover.

It is an object of the present disclosure to provide wiring equipment, time switches, and terminal covers that do not require screwing of the terminal cover to the housing while restricting the opening of the terminal cover only by human hands. ..

The wiring device according to one aspect of the present disclosure includes a housing, a terminal cover, a hooking portion, and an access restricting portion. The housing accommodates terminals to which electric wires are connected. The terminal cover is attached to the housing and can be moved between a closed position that covers the terminal and an open position that exposes the terminal by rotating around a rotation axis. The hooking portion is provided on one of the housing and the terminal cover, and is hooked on the other of the housing and the terminal cover in a state where the terminal cover is in the closed position, thereby engaging the terminal. Restrict the movement of the cover to the open position. The access restricting unit restricts human hand access to the hooking unit while the terminal cover is in the closed position. The terminal cover is provided at a portion facing the housing and has an operation portion on which a human hand's nail is caught. The operation unit is operated by hooking the claw of a human hand in a state where the hooking portion is released from the restriction on the movement of the terminal cover to the open position, whereby the terminal cover is mounted on the rotation shaft. Is rotated around the terminal cover to move the terminal cover from the closed position to the open position.

The time switch according to one aspect of the present disclosure is the wiring device described above, and has a function of switching the power supply state from the power source to the load based on a set time.

The terminal cover according to one aspect of the present disclosure includes a cover main body, a hooking portion, an access restricting portion, and an operating portion . The cover body is attached to a housing accommodating a terminal to which an electric wire is connected, and rotates about a rotation axis between a closed position that covers the terminal and an open position that exposes the terminal. It is movable. The hooking portion is hooked on the housing while the cover body is in the closed position, thereby restricting the movement of the cover body to the open position. The access restricting unit restricts human hand access to the hooking unit while the cover body is in the closed position. The operation unit is provided at a portion facing the housing, and the nail of a human hand is caught on the operation unit. The operation unit is operated by hooking the claws of a human hand while the hooking portion is released from the restriction on the movement of the cover body to the open position, whereby the cover body is rotated. Is rotated around the cover body to move the cover body from the closed position to the open position.

The present disclosure has the advantage that the terminal cover does not need to be screwed to the housing while restricting the terminal cover from being opened only by human hands.

FIG. 1 is a perspective view of the wiring device according to the embodiment of the present disclosure when the terminal cover is in the open position. FIG. 2 is a perspective view of the wiring device of the same as above when the terminal cover is in the closed position. FIG. 3A is a front view of the wiring fixture of the same when the terminal cover is in the open position. FIG. 3B is a sectional view taken along line X1-X1 of FIG. 3A. FIG. 4A is a cross-sectional view of a main part of the same wiring device when the terminal cover is in the closed position. FIG. 4B is a cross-sectional view of a main part showing a state in which a jig is inserted into an opening of a terminal cover in the same wiring device. FIG. 4C is an enlarged cross-sectional view of the region surrounded by the alternate long and short dash line in FIG. 4B. FIG. 5A is a cross-sectional view of a main part of the wiring device according to the first modification of the first embodiment of the present disclosure when the terminal cover is in the closed position. FIG. 5B is a cross-sectional view of a main part showing a state in which a jig is inserted into an opening of a terminal cover in the same wiring device. FIG. 6 is a cross-sectional view of a main part of the wiring device according to the second modification of the second embodiment of the present disclosure when the terminal cover is in the closed position.

(1) Overview As shown in FIG. 1, the wiring device 100 of the present embodiment includes a housing 1, a terminal cover 4, a hooking portion 5, and an access restricting portion 6. In this embodiment, the wiring device 100 is a time switch. The time switch has a function of switching the power supply state from the power supply to the load based on the set time. For example, assume that the air conditioner is electrically connected to the time switch as a load. In this case, the time switch can be set to operate the air conditioner from 9 am to 5 pm on each day from Monday to Friday, and to stop the air conditioner at other times. be. Hereinafter, unless otherwise specified, the "wiring device 100" is referred to as a "time switch 100".

The housing 1 accommodates a terminal 2 to which an electric wire is connected. In the present embodiment, the housing 1 accommodates a terminal block 3 having a plurality of (here, four) terminals 2. Each terminal 2 is exposed from the housing 1 when the terminal cover 4 is not attached to the housing 1.

The terminal cover 4 is attached to the housing 1 and can move between the closed position and the open position by rotating around the rotation shaft 42. In other words, the terminal cover 4 is rotatable between the open position and the closed position due to the hinge structure. The closed position is a position that covers the terminal 2. When the terminal cover 4 is in the closed position, the terminal 2 is in a state where the work of connecting the electric wire to the terminal 2 cannot be performed, that is, a state in which it cannot be touched by human hands. The open position is a position where the terminal 2 is exposed. When the terminal cover 4 is in the open position, the terminal 2 is in a state where the work of connecting the electric wire to the terminal 2 can be performed, that is, in a state where it can be touched by a human hand.

The hook portion 5 is provided on one of the housing 1 and the terminal cover 4. In the present embodiment, the hooking portion 5 is a claw 44 (described later) provided on the terminal cover 4. The hooking portion 5 is hooked on the other of the housing 1 and the terminal cover 4 in a state where the terminal cover 4 is in the closed position, thereby restricting the movement of the terminal cover 4 to the open position. In the present embodiment, the hooking portion 5 is hooked on the housing 1 in a state where the terminal cover 4 is in the closed position. That is, in the state where the terminal cover 4 is in the closed position, even if the terminal cover 4 is moved to the open position only by human hands, the hooking portion 5 is caught by the housing 1 to open the terminal cover 4. It cannot be moved to a position.

The access restricting unit 6 restricts human hand access to the hooking unit 5 while the terminal cover 4 is in the closed position. In the present embodiment, the access control unit 6 includes an opening 43 (described later) provided in the terminal cover 4. That is, in order to release the restriction on the movement of the terminal cover 4 to the open position by the hooking portion 5, it is necessary to move the hooking portion 5. In the present embodiment, the hooking portion 5 can be accessed through the opening 43, but since the opening 43 is set to a size that does not allow a part of a human hand (for example, a finger) to pass through, only the human hand can be accessed. It is not possible to access the hooking portion 5 with.

As described above, since the hooking portion 5 is provided in the present embodiment, it is possible to restrict the movement of the terminal cover 4 to the open position without screwing the terminal cover 4 to the housing 1. Further, in the present embodiment, since the access regulation unit 6 is provided, the restriction by the hooking unit 5 cannot be lifted only by human hands. That is, in the present embodiment, there is an advantage that the terminal cover 4 does not need to be screwed to the housing 1 while restricting the opening of the terminal cover 4 only by human hands.

(2) Configuration Hereinafter, the configuration of the time switch 100 according to the embodiment of the present disclosure will be described in detail with reference to FIGS. 1 to 4B. In the following, in FIG. 1, the length direction of the housing 1 is the first direction (vertical direction), and the display unit 83 (described later) side as viewed from the first setting button 81 (described later) is upward and vice versa. Described below. Further, in the following, in FIG. 1, the width direction of the housing 1 is the second direction (left-right direction), and the terminals 2A and 2B (described later) are on the left side when viewed from the terminals 2C and 2D (described later). The opposite is explained as the right side. Further, in the following, in FIG. 1, the thickness direction of the housing 1 is the third direction (front-back direction), the terminal cover 4 side as viewed from the base 14 (described later) is referred to as the front, and the reverse is described as the rear. ..

It should be noted that FIGS. 1 and the like show arrows indicating these directions (up, down, left, right, front, back), but these arrows are described only for the purpose of assisting the explanation. Not too much, without substance. Further, the above-mentioned provision of the direction is not intended to limit the usage mode of the time switch 100 of the present embodiment.

As shown in FIGS. 1 to 4B, the time switch 100 of the present embodiment includes a housing 1, a terminal block 3 having a plurality of terminals 2 (here, four terminals 2A to 2D), and a terminal cover 4. , And a functional unit 8.

The housing 1 is, for example, a resin box body, and as shown in FIG. 1, houses a terminal block 3 and a part of a functional unit 8. The housing 1 is attached to a building material such as a wall, for example, by screwing. In the present embodiment, a part of the functional unit 8 is housed in the upper half of the housing 1, and the terminal block 3 is housed in the lower half of the housing 1. In the upper half area of the housing 1, a plurality of first setting buttons 81, two second setting buttons 82, a display unit 83, and a power switch 84 as a part of the functional unit 8 are exposed from the front surface 11. There is.

In the area of the lower half of the housing 1, a first recess 12 recessed backward from the front surface 11 and a pair of second recesses 13A and 13B recessed downward from the front end edge on the lower wall of the housing 1 are provided. Has been done. The cover main body 41 (described later) of the terminal cover 4 is housed in the first recess 12 in a state where the terminal cover 4 is in the closed position (see FIG. 2). The pair of side pieces 45A and 45B of the terminal cover 4 are fitted into the pair of second recesses 13A and 13B in a state where the terminal cover 4 is in the closed position, respectively (see FIG. 2). In a state where the pair of side pieces 45A and 45B are fitted into the pair of second recesses 13A and 13B, respectively, the vacant areas of the pair of second recesses 13A and 13B are the electric wires connected to the terminals 2, respectively. The drawers are 10A and 10B (see FIG. 2). Both the drawer ports 10A and 10B are set to a size that the fingers of the human hand cannot pass through so that the human hand cannot touch each terminal 2.

Between the pair of second recesses 13A and 13B, there is a base portion 14 that covers the front surface of the terminal block 3. A rectangular opening 15 penetrating in the front-rear direction is provided on the front surface of the base portion 14. The opening 15 is set to a size through which the claw 44 of the terminal cover 4 passes. The portion of the terminal block 3 facing the opening 15 is hollow (see FIG. 3B). Therefore, when the terminal cover 4 is in the closed position, the claw 44 that has passed through the opening 15 is housed in the hollow portion of the terminal block 3 (see FIG. 4A).

A thin-walled portion 151 formed thinner than other portions is provided on the inner peripheral edge of the opening 15 (see FIG. 3B). The projecting piece 444 (described later) of the claw 44 is caught on the thin portion 151 in a state where the terminal cover 4 is in the closed position. As described above, in the present embodiment, the spring length of the claw 44 is increased and the elasticity of the claw 44 is secured by making the portion (thin-walled portion 151) where the claw 44 (hook portion 5) is caught in the housing 1 as thin as possible. It's easy.

As shown in FIG. 1, the terminal block 3 has a pair of first terminals 2A and 2B and a pair of second terminals 2C and 2D as a plurality of terminals 2. Each of the plurality of terminals 2 has a terminal screw for screwing a crimp terminal provided at one end of the electric wire. The pair of first terminals 2A and 2B and the pair of terminals 2C and 2D are electrically connected to a control circuit housed in the housing 1, respectively. Each of the pair of first terminals 2A and 2B is used to connect an electric wire electrically connected to an electric device (load) such as an air conditioner. Each of the pair of second terminals 2C and 2D is used to connect an electric wire electrically connected to an external power source such as a commercial power source.

These four terminals 2A to 2D are accommodated in each of the four accommodating portions 31A to 31D. All of the four accommodating portions 31A to 31D are provided in the lower part of the terminal block 3, and the front surface and the lower surface are open. Therefore, in the state where the terminal cover 4 is in the open position, all the four terminals 2A to 2D accommodated in the four accommodating portions 31A to 31D are exposed from the housing 1. The accommodating portions 31A and 31B and the accommodating portions 31C and 31D are mechanically and electrically separated by partition walls 32A and 32B, respectively.

The terminal cover 4 is made of resin, for example, and as shown in FIG. 1, the cover main body 41, a pair of bearings 42A and 42B, an opening 43, a claw 44, a pair of side pieces 45A and 45B, and a recess. It has a 46 and a protruding portion 47.

The cover body 41 has a rectangular plate shape in which the length direction is the left-right direction and the width direction is the up-down direction. A pair of bearings 42A and 42B are provided at both ends of the cover body 41 in the length direction (left-right direction), respectively. In the housing 1, a pair of shafts is provided at a portion facing each of the pair of bearings 42A and 42B. The cover main body 41 (that is, the terminal cover 4) is attached to the housing 1 by fitting a pair of shafts of the housing 1 to the pair of bearings 42A and 42B, respectively. The cover body 41 (terminal cover 4) is configured to be rotatable between the closed position and the open position around the pair of bearing portions 42A and 42B (in other words, the rotating shaft 42).

A rectangular opening 43 penetrating in the thickness direction is provided in the central portion of the cover main body 41. The opening 43 is provided at a position facing the opening 15 of the base 14 in a state where the terminal cover 4 is in the closed position. Therefore, when the terminal cover 4 is in the closed position, the claw 44 that has passed through the opening 15 can be seen through the opening 43 (see FIG. 2). The opening 43 is set to a size that does not allow the fingers of a human hand to pass through. Further, the opening 43 is set to a size into which the jig B1 (see FIG. 4B) can be inserted. The jig B1 is, for example, a flat-blade screwdriver and is used to operate the claw 44 (hooking portion 5) so as to release the restriction on the movement of the terminal cover 4 to the open position. In the present embodiment, the claw 44 can be operated by pressing the tip of the jig B1 against the claw 44 with a part of the jig B1 passed through the opening 43 (see FIG. 4B).

As shown in FIG. 3B, the claw 44 has a U-shape as a whole when viewed from the left-right direction. The claw 44 has a first piece 441, a second piece 442, and a connecting piece 443.

The first piece 441 is integrally formed with the cover main body 41 of the terminal cover 4. The first piece 441 projects in the thickness direction of the cover main body 41. Therefore, the first piece 441 projects backward from the cover main body 41 when the terminal cover 4 is in the closed position (see FIG. 4A).

The second piece 442 is connected to the first piece 441 via a connecting piece 443 and faces the first piece 441 with a gap. Therefore, the second piece 442 faces the first piece 441 in the vertical direction when the terminal cover 4 is in the closed position. As described above, in the present embodiment, there is a gap between the first piece 441 and the second piece 442. Therefore, since the second piece 442 bends so as to fill this gap, it is easier to bend as compared with the case where there is no gap.

In the middle portion of the second piece 442 in the length direction (front-back direction in FIG. 4A), a projecting piece 444 projecting toward the opposite side of the first piece 441 (downward in FIG. 4A) is integrally formed. .. The projecting piece 444 is hooked on the thin portion 151 of the housing 1 in a state where the terminal cover 4 is in the closed position. Further, in the second piece 442, an inclined surface 446 is formed between the projecting piece 444 and the connecting piece 443.

In the second piece 442, a taper 445 is formed at an end portion (front end portion in FIG. 4A) opposite to the end portion connected to the connecting piece 443. The taper 445 is inclined downward toward the rear when the terminal cover 4 is in the closed position. The taper 445 guides the tip of the jig B1 to the gap D1 between the thin portion 151 and the second piece 442 when the jig B1 is inserted into the opening 43. That is, the claw 44 (hooking portion 5) has a taper 445 (guide portion 51) that guides the jig B1 inserted from the opening 43 to a predetermined operation position (gap D1).

In the present embodiment, when the terminal cover 4 is in the closed position, the projecting piece 444 of the claw 44 that has passed through the opening 15 is caught by the thin portion 151 of the housing 1, so that the terminal cover 4 rotates clockwise ( That is, the movement of the terminal cover 4 from the closed position to the open position) is restricted. As described above, in the present embodiment, the claw 44 is provided on the terminal cover 4 and is hooked on a part of the housing 1 (thin-walled portion 151) in a state where the terminal cover 4 is in the closed position, whereby the terminal cover 4 is provided. Functions as a hooking portion 5 that regulates the movement of the hook to the open position. In the present embodiment, the claw 44 (hooking portion 5) is located between both ends of the terminal cover 4 (cover main body 41) in the direction orthogonal to the rotation axis 42 (that is, the width direction of the cover main body 41). In the present embodiment, the rotating shaft 42 is located at one end of both ends of the terminal cover 4 (cover main body 41) in a direction orthogonal to the rotating shaft 42.

Further, in the present embodiment, the claw 44 can be accessed through the opening 43 of the terminal cover 4 in the state where the terminal cover 4 is in the closed position. On the other hand, since the opening 43 is set to a size that the fingers of a human hand cannot pass through, the fingernail 44 cannot be touched by the fingers of the human hand. As described above, in the present embodiment, the opening 43 functions as an access restricting unit 6 for restricting the access of a person's hand (fingers or nails) to the hooking portion 5 in a state where the terminal cover 4 is in the closed position. There is. In other words, the access control unit 6 includes the opening 43. The opening 43 is provided in the terminal cover 4 and is formed at a position corresponding to the claw 44 (hook portion 5) in a state where the terminal cover 4 is in the closed position.

As shown in FIGS. 1 and 2, each of the pair of side pieces 45A and 45B has a rectangular plate shape, and is oriented from one end in the width direction of the cover body 41 to the direction along the thickness direction of the cover body 41. It stands out. Therefore, the pair of side pieces 45A and 45B both project backward when the terminal cover 4 is in the closed position. Then, as already described, in the state where the terminal cover 4 is in the closed position, the pair of side pieces 45A and 45B are fitted into the pair of second recesses 13A and 13B of the housing 1, respectively (see FIG. 2). ).

As shown in FIG. 1, a recess 46 is provided between the pair of side pieces 45A and 45B in the length direction (left-right direction) of the cover main body 41. As shown in FIG. 2, the base portion 14 of the housing 1 is fitted into the recess 46 when the terminal cover 4 is in the closed position. When the terminal cover 4 is in the closed position, the inner wall on the front side of the recess 46 is not in contact with the base portion 14, and a gap A1 is provided between them. The gap A1 is a dimension into which a human hand nail C1 (see FIG. 4C) can be inserted. Therefore, when the terminal cover 4 is in the closed position, by pointing the claw C1 into the gap A1, the claw C1 is hooked on the inner wall on the front side of the recess 46, and a force in the direction toward the open position on the terminal cover 4 is applied. Can be added (see FIG. 4C). That is, the terminal cover 4 is provided at a portion facing the housing 1 (here, the base portion 14), and has an operation portion 461 (inner wall on the front side of the recess 46) on which the claw C1 of a human hand is caught. There is.

A cylindrical projecting portion 47 projecting in the thickness direction is integrally formed on the lower surface of the cover body 41. The protruding portion 47 is located between the claw 44 and the pair of bearing portions 42A and 42B (rotating shaft 42) in the width direction of the cover main body 41 (vertical direction in FIG. 2). As shown in FIG. 4A, the protruding portion 47 has its rear end in contact with the front surface of the base portion 14 of the housing 1 when the terminal cover 4 is in the closed position. Therefore, even if the terminal cover 4 is further pushed in from the closed position toward the base portion 14, the protruding portion 47 comes into contact with the base portion 14, further restricting the rotation of the terminal cover 4. That is, in the present embodiment, the terminal cover 4 has a protruding portion 47 (opening / closing restricting portion 7). The protruding portion 47 is provided between the claw 44 (hooking portion 5) and the rotating shaft 42, and is in contact with the housing 1 to regulate the moving range of the terminal cover 4. Further, the opening / closing restricting portion 7 has a protruding portion 47. The protruding portion 47 protrudes from the surface of the terminal cover 4 facing the terminal 2 (lower surface of the cover main body 41 in FIG. 2) in a state where the terminal cover 4 is in the closed position.

The functional unit 8 includes a relay, a drive circuit for the relay, and a control unit. The relay is, for example, an electromagnetic relay, and is inserted in a power supply path from a power source to an electric device (load). The relay opens and closes the supply path by the drive circuit. When the relay is on, the supply path is closed, so power is supplied from the power supply to the load. On the other hand, in the off state of the relay, since the supply path is open, the power supply from the power supply to the load is stopped. That is, the power supply state from the power supply to the load is switched by turning the relay on / off.

The control unit is composed of, for example, a computer (including a microcontroller) having a processor and a memory. That is, the control unit is realized in a computer system having a processor and a memory. Then, when the processor executes an appropriate program, the computer system functions as a control unit. The program may be pre-recorded in a memory, may be recorded through a telecommunication line such as the Internet, or may be recorded and provided on a non-temporary recording medium such as a memory card.

The control unit controls the on / off of the relay by controlling the drive circuit according to the parameters set in the input unit including the plurality of first setting buttons 81 and the two second setting buttons 82 described later. .. The "parameter" here is a time (which may include hours, minutes, and seconds) and day of the week when the relay is turned on, and a time and day of the week when the relay is turned off. That is, the control unit has a function of switching the power supply state from the power source to the load based on the time set by the input unit.

In addition, as described above, the functional unit 8 further includes a plurality of first setting buttons 81, two second setting buttons 82, a display unit 83, and a power switch 84.

The plurality of first setting buttons 81 are, for example, tactile switches and can be operated with the fingers of a human hand. The two second setting buttons 82 are, for example, tactile switches, and can be operated by using a jig thinner than the fingers of a human hand, such as a pen. The plurality of first setting buttons 81 and the two second setting buttons 82 function as input units for receiving inputs for setting the above-mentioned parameters.

The display unit 83 is, for example, a liquid crystal display. The display unit 83 is configured to change the display content by being controlled by the control unit. For example, in the normal mode, the display unit 83 displays the current time, the day of the week, and the like. Further, in the setting mode, for example, in the setting mode, the input content received by the input unit (that is, the parameter to be set) and the like are displayed on the display unit 83. The "normal mode" here is a mode in which the control unit controls the drive circuit according to the set parameters. Further, the "setting mode" referred to here is a mode in which the parameter in the control unit is set by the user of the time switch 100.

The power switch 84 is, for example, a slide switch, and is used for at least switching between an operating state and a stopped state. The "operating state" here is a state in which the time switch 100 operates by supplying electric power to the time switch 100. Further, the "stop state" here is a state in which the operation of the time switch 100 is stopped by stopping the supply of electric power to the time switch 100.

(3) How to use the terminal cover Hereinafter, how to use the terminal cover 4 in the time switch 100 of the present embodiment will be described. First, a case where the terminal cover 4 is closed after the user connects an electric wire to each terminal 2 in a state where the terminal cover 4 is in the open position (see FIG. 3B) will be described. In this case, the user holds the terminal cover 4 in his hand and rotates the terminal cover 4 counterclockwise around the rotation shaft 42. As a result, the terminal cover 4 moves from the open position to the closed position.

At this time, the claw 44 (hooking portion 5) is pushed from the front into the opening 15 provided in the base portion 14 of the housing 1. Then, the thin portion 151 comes into contact with the inclined surface 446 of the claw 44. Then, as the claw 44 moves backward, the inclined surface 446 of the claw 44 is pushed by the thin-walled portion 151, so that the claw 44 bends upward. When the terminal cover 4 moves to the open position, the projecting piece 444 of the claw 44 gets over the thin-walled portion 151, so that the inclined surface 446 is not pushed by the thin-walled portion 151. Therefore, when the claw 44 returns to the original state, the projecting piece 444 is caught by the thin-walled portion 151 (see FIG. 4A).

As a result, even if the user holds the terminal cover 4 in his / her hand and tries to rotate it clockwise (even if he / she tries to move the terminal cover 4 from the closed position to the open position), the projecting piece 444 of the claw 44 is attached to the thin portion 151. By being caught, the movement of the terminal cover 4 from the closed position to the open position is restricted. That is, the user cannot open the terminal cover 4 unless the jig B1 is used to remove the restriction on the movement of the terminal cover 4 from the closed position to the open position by the claw 44.

Next, a case where the user opens the terminal cover 4 will be described. In this case, the user first inserts the jig B1 into the opening 43 of the terminal cover 4. Then, the tip of the jig B1 moves backward along the taper 445 (guide portion 51) of the claw 44, so that the tip of the jig B1 is guided to a predetermined operation position (gap D1). In this state, the user pushes the second piece 442 of the claw 44 upward by using the jig B1 to widen the gap D1, so that the claw 44 has one end (front end) of the first piece 441 as an axis. , The whole bends upward. Further, when the claw 44 is pushed by the tip of the jig B1, the claw 44 bends so as to narrow the gap between the first piece 441 and the second piece 442. As a result, the protrusion 444 of the claw 44 is separated from the thin portion 151, and the restriction on the movement of the terminal cover 4 by the claw 44 to the open position is released. After that, the user inserts the claw C1 into the gap A1 between the terminal cover 4 and the base 14 of the housing 1 with the jig B1 inserted into the opening 43 (see FIG. 4C). Then, the user applies a forward force (direction in which the terminal cover 4 is rotated clockwise) to the operation unit 461 by the claw C1 to move the terminal cover 4 from the closed position to the open position.

As described above, in the present embodiment, since the claw 44 (hooking portion 5) is provided, the movement of the terminal cover 4 to the open position is restricted without screwing the terminal cover 4 to the housing 1. Can be done. Therefore, in the present embodiment, when the terminal cover 4 is opened, it is not necessary to remove the screw by using a jig, so that there is no possibility that the screw will fall off from the terminal cover 4. Further, in the present embodiment, since the opening 43 (access restricting unit 6) is provided, the restriction by the hooking unit 5 cannot be released only by human hands. Therefore, in the present embodiment, as in the configuration in which the terminal cover 4 is screwed to the housing 1, the work using the jig B1 is required when opening the terminal cover 4, so that the terminal cover 4 is inadvertently opened. It is possible to prevent it from being damaged. That is, in the present embodiment, there is an advantage that the terminal cover 4 does not need to be screwed to the housing 1 while restricting the opening of the terminal cover 4 only by human hands.

Further, in the present embodiment, the direction in which the jig B1 is inserted into the opening 43 of the terminal cover 4 and the direction in which the terminal cover 4 is moved from the closed position to the open position are different. That is, in the present embodiment, when the terminal cover 4 is opened, the user is required to move in a direction different from the direction in which the terminal cover 4 is moved from the closed position to the open position. Therefore, in the present embodiment, since the user cannot open the terminal cover 4 unless the correct procedure is taken, it is easy to prevent the terminal cover 4 from being opened carelessly, and it is easy to ensure the safety of the user. There is also an advantage.

(4) Modifications The above embodiment is only one of the various embodiments of the present disclosure. The above-described embodiment can be variously modified depending on the design and the like as long as the object of the present disclosure can be achieved. Hereinafter, modified examples of the above-described embodiment will be listed. The modifications described below can be applied in combination as appropriate.

(4.1) First Modified Example As shown in FIGS. 5A and 5B, the time switch 100 of the first modified example has a housing 1A instead of the housing 1 and a terminal cover 4A instead of the terminal cover 4. It differs from the time switch 100 of the above-described embodiment in that it is provided. The time switch 100 of the present modification is provided with the claw 16 (hooking portion 5) on the housing 1A instead of providing the claw 44 (hooking portion 5) on the terminal cover 4, and the time of the above-described embodiment is provided. It is different from the switch 100. Further, the time switch 100 of the present modification is provided with an opening 17 (access restricting unit 6) in the housing 1A instead of providing an opening 43 (access restricting unit 6) in the terminal cover 4. It is different from the time switch 100 of.

The opening 17 is provided in the base portion 14 of the housing 1A, and penetrates the base portion 14 in the thickness direction (vertical direction in FIG. 5A). Similar to the opening 43 of the above-described embodiment, the opening 17 is set to a size that the fingers of a human hand cannot pass through and that the jig B1 can be inserted.

The claw 16 projects from the inner peripheral edge of the opening 17 (here, the inner wall on the front side) to the inside of the housing 1A. The tip of the claw 16 is a projecting piece 161 that is hooked on the hook 48 provided on the terminal cover 4A. The hook 48 is integrally formed on one surface (rear surface in FIG. 5A) facing the terminal 2 of the cover main body 41 of the terminal cover 4A.

In this modification, as shown in FIG. 5A, when the terminal cover 4A is in the closed position, the projecting piece 161 of the housing 1A is caught by the hook 48 of the terminal cover 4A from the closed position of the terminal cover 4A. Movement to the open position is restricted. Further, in this modification, as shown in FIG. 5B, the jig B1 is inserted into the opening 17 of the housing 1A, and the claw 16 is pushed by the jig B1, so that the projecting piece 161 of the claw 16 is separated from the hook 48. , The restriction on the movement of the terminal cover 4A to the open position by the claw 16 is lifted.

(4.2) Second Modified Example As shown in FIG. 6, the time switch 100 of the second modified example includes a housing 1B instead of the housing 1 and a terminal cover 4B instead of the terminal cover 4. In that respect, it differs from the time switch 100 of the above-described embodiment. The time switch 100 of the present modification has the above-described embodiment in that the pin 18 (hooking portion 5) is provided on the housing 1B instead of providing the claw 44 (hooking portion 5) on the terminal cover 4. It is different from the time switch 100. Further, the time switch 100 of this modification is described above in that the terminal cover 4B is provided with an opening 43A (access restricting unit 6) instead of providing the terminal cover 4 with an opening 43 (access restricting unit 6). It is different from the time switch 100 of the form.

The pin 18 is provided on one surface (front surface in FIG. 6) of the housing 1B facing the terminal cover 4B in a state where the terminal cover 4B is in the closed position. The pin 18 is composed of a pin body 181 and a pair of elastic pieces 182, 183. The pin body 181 projects from the one side of the housing 1B toward the terminal cover 4B (forwardward in FIG. 6). The pin body 181 has a size that can be inserted into the opening 43A of the terminal cover 4B. The pair of elastic pieces 182 and 183 are integrally formed at one end (front end in FIG. 6) of the pin body 181 in the length direction. Each of the pair of elastic pieces 182 and 183 is configured to bend between a first position in contact with the pin body 181 and a second position away from the pin body 181.

The opening 43A penetrates the terminal cover 4B in the thickness direction (front-rear direction in FIG. 6). Similar to the opening 43 of the above-described embodiment, the opening 43A is set to a size that the fingers of a human hand cannot pass through and that the jig B1 can be inserted. Further, a rib 431 projecting inward in the circumferential direction is provided on the inner peripheral edge of the opening 43A. In the opening 43A, the hole surrounded by the rib 431 is set to a size in which the pin 18 with the pair of elastic pieces 182 and 183 in the first position can be inserted.

In this modification, as shown in FIG. 6, when the terminal cover 4B is in the closed position, the pair of elastic pieces 182 and 183 of the housing 1B are caught by the ribs 431 of the terminal cover 4B, so that the terminal cover 4B is used. Movement from the closed position to the open position is restricted. Further, in this modification, for example, by inserting a jig into the opening 43A and sandwiching the pair of elastic pieces 182 and 183 using the jig, the pair of elastic pieces 182 and 183 are moved from the second position to the first position. By moving the pin 18, the pin 18 can be inserted into the hole surrounded by the rib 431. That is, in this modification, by sandwiching the pair of elastic pieces 182 and 183 using a jig, the restriction on the movement of the terminal cover 4B by the pin 18 to the open position is released.

(4.3) Other Modification Examples The following is a list of modification examples other than the above-mentioned first modification and second modification. The following various modifications can be applied in combination as appropriate.

In the above-described embodiment, the number of claws 44 (hooking portion 5) is one, but there may be a plurality of claws 44. In this aspect, a plurality of openings 15 corresponding to the plurality of claws 44 may be provided in the base portion 14 of the housing 1.

In the above-described embodiment, the operation unit 461 has a gap A1 into which the claw C1 of the human hand can be inserted in order to hook the claw C1 of the human hand, but the present invention is not limited to this. For example, instead of having the gap A1, one of the terminal cover 4 and the housing 1 may have a recess. Also in this embodiment, by inserting the human hand claw C1 into the recess, it is possible to hook the human hand claw C1 on the operation unit 461.

In the above-described embodiment, the terminal cover 4 has the operation unit 461, but may not have the operation unit 461. In this case, when opening the terminal cover 4, the user may hold the terminal cover 4 directly in his / her hand with the jig B1 inserted into the opening 43 and move the terminal cover 4 from the closed position to the open position.

In the above-described embodiment and modification, the wiring device 100 is a time switch 100, but the present invention is not limited to this. For example, if the wiring device 100 has a structure in which the terminal 2 is covered with the terminal cover 4, such as a terminal block, an outlet, a switch device such as an automatic flasher, or a breaker, the above-described embodiment and modification are applied. obtain.

In the above-described embodiments and modifications, the terminal covers 4, 4A and 4B are not only distributed in the market as wiring appliances 100 combined with the housings 1, 1A and 1B, respectively, but also in the market as a single unit. good. That is, the terminal covers 4, 4A and 4B include a cover main body 41, a hooking portion 5, and an access restricting portion 6. The cover body 41 is attached to a housing 1 accommodating a terminal 2 to which an electric wire is connected, and rotates around a rotation shaft 42 to form a closed position for covering the terminal 2 and an open position for exposing the terminal 2. It is possible to move between. The hooking portion 5 is hooked on the housing 1 in a state where the cover main body 41 is in the closed position, thereby restricting the movement of the cover main body 41 to the open position. The access restricting unit 6 restricts the access of a person's hand to the hooking unit 5 in a state where the cover main body 41 is in the closed position.

(summary)
As described above, the wiring device (100) according to the first aspect includes a housing (1,1A, 1B), a terminal cover (4,4A, 4B), a hooking portion (5), and access restrictions. A unit (6) is provided. The housing (1,1A, 1B) accommodates the terminal (2) to which the electric wire is connected. The terminal cover (4,4A, 4B) is attached to the housing (1,1A, 1B), and by rotating around the rotation axis (42), the closed position that covers the terminal (2) and the terminal It is movable between the open position and the open position where (2) is exposed. The hook portion (5) is provided on one of the housing (1,1A, 1B) and the terminal cover (4,4A, 4B). The hooking portion (5) is hooked on the other of the housing (1,1A, 1B) and the terminal cover (4,4A, 4B) in a state where the terminal cover (4,4A, 4B) is in the closed position. , The movement of the terminal cover (4, 4A, 4B) to the open position is restricted. The access control unit (6) restricts the access of a person's hand to the hook unit (5) in a state where the terminal cover (4, 4A, 4B) is in the closed position.

According to this aspect, the terminal cover (4,4A, 4B) is attached to the housing (1,1A, 1B) while restricting the opening of the terminal cover (4,4A, 4B) only by human hands. It has the advantage of eliminating the need for screwing.

In the wiring device (100) according to the second aspect, in the first aspect, the hook portion (5) is placed between both ends of the terminal cover (4, 4B) in the direction orthogonal to the rotation axis (42). be.

According to this aspect, there is an advantage that it is easier to regulate the access of a person's hand to the hook portion (5) as compared with the case where the hook portion (5) is provided at the end of the terminal cover (4, 4B). be.

In the wiring device (100) according to the third aspect, in the first or second aspect, the terminal cover (4, 4A, 4B) has an opening / closing restricting unit (7). The opening / closing restricting portion (7) is provided between the hooking portion (5) and the rotating shaft (42), and regulates the moving range of the terminal cover (4, 4A, 4B) by coming into contact with the housing (1). do.

According to this aspect, by preventing the terminal cover (4,4A, 4B) from excessively approaching the housing (1), excessive stress is applied to the terminal cover (4,4A, 4B). It has the advantage of being easy to prevent.

In the wiring device (100) according to the fourth aspect, in the third aspect, the opening / closing restricting portion (7) has a protruding portion (47). The protruding portion (47) protrudes from the surface of the terminal cover (4,4A, 4B) facing the terminal (2) in a state where the terminal cover (4,4A, 4B) is in the closed position.

According to this aspect, there is an advantage that the moving range of the terminal cover (4, 4A, 4B) can be regulated by a simple configuration.

In the wiring device (100) according to the fifth aspect, in any one of the first to fourth aspects, the access control unit (6) includes an opening (17,43,43A). The opening (17,43,43A) is provided in one of the housing (1) and the terminal cover (4,4A, 4B), and the terminal cover (4,4A, 4B) is in the closed position. , Is formed at a position corresponding to the hooking portion (5). A jig (B1) for operating the hook portion (5) can be inserted into the opening (17, 43, 43A) so as to release the restriction on the movement of the terminal cover (4, 4A, 4B) to the open position. Dimensions.

According to this aspect, there is an advantage that the restriction by the hook portion (5) can be released by a simple operation of inserting the jig (B1) into the opening (17, 43, 43A).

In the wiring device (100) according to the sixth aspect, in the fifth aspect, the hooking portion (5) moves the jig (B1) inserted from the opening (17,43,43A) to a predetermined operation position. It has a guide unit (51) for guiding.

According to this aspect, when the jig (B1) is inserted into the opening (17, 43, 43A), there is an advantage that the jig (B1) can be easily guided to a predetermined operation position without causing catching. be.

In the wiring device (100) according to the seventh aspect, in any one of the first to sixth aspects, the terminal cover (4, 4A, 4B) is provided at a portion facing the housing (1). It has an operation unit (461) on which the claw (C1) of a human hand is caught.

According to this aspect, there is an advantage that the terminal cover (4, 4A, 4B) can be easily moved from the closed position to the open position in a state where the restriction by the hook portion (5) is released.

The time switch (100) according to the eighth aspect is the wiring device (100) according to any one of the first to seventh aspects, and changes the power supply state from the power source to the load based on the set time. It has a function to switch.

According to this aspect, the terminal cover (4,4A, 4B) is attached to the housing (1,1A, 1B) while restricting the opening of the terminal cover (4,4A, 4B) only by human hands. It has the advantage of eliminating the need for screwing.

The terminal cover (4, 4A, 4B) according to the ninth aspect includes a cover main body (41), a hooking portion (5), and an access restricting portion (6). The cover body (41) is attached to a housing (1) accommodating a terminal (2) to which an electric wire is connected, and rotates around a rotation shaft (42) to cover a closed position of the terminal (2). And the open position where the terminal (2) is exposed. The hook portion (5) is hooked on the housing (1) in a state where the cover main body (41) is in the closed position, thereby restricting the movement of the cover main body (41) to the open position. The access control unit (6) regulates the access of a person's hand to the hook part (5) in a state where the cover body (41) is in the closed position.

According to this aspect, the terminal cover (4,4A, 4B) is attached to the housing (1,1A, 1B) while restricting the opening of the terminal cover (4,4A, 4B) only by human hands. It has the advantage of eliminating the need for screwing.

The configuration according to the second to seventh aspects is not an essential configuration for the wiring device (100), and can be omitted as appropriate.

100 time switch (wiring equipment)
1,1A, 1B Housing 17 Opening 2 Terminal 4,4A, 4B Terminal cover 41 Cover body 42 Rotating shaft 43,43A Opening 461 Operation part 47 Protruding part 5 Hooking part 51 Guide part 6 Access regulation part 7 Opening and closing regulation part B1 Tool C1 Nail of one's hand

Claims (8)

A housing that houses terminals to which electric wires are connected, and
A terminal cover that is attached to the housing and can be moved between the closed position that covers the terminal and the open position that exposes the terminal by rotating around the rotation axis.
The terminal cover is provided in one of the housing and the terminal cover, and is hooked on the other of the housing and the terminal cover in a state where the terminal cover is in the closed position, whereby the opening position of the terminal cover is obtained. With a hook that regulates movement to
With the terminal cover in the closed position, an access restricting unit for restricting the access of a person's hand to the hooking portion is provided.
The terminal cover is provided at a portion facing the housing and has an operation portion on which the nail of a human hand is caught.
The operation unit is operated by hooking the claw of a human hand in a state where the hooking portion is released from the restriction on the movement of the terminal cover to the open position, whereby the terminal cover is mounted on the rotation shaft. To move the terminal cover from the closed position to the open position by rotating around.
Wiring equipment. The hooking portion is located between both ends of the terminal cover in a direction orthogonal to the rotation axis.
The wiring device according to claim 1. The terminal cover is provided between the hooking portion and the rotating shaft, and has an opening / closing restricting portion that regulates the movement range of the terminal cover by coming into contact with the housing.
The wiring device according to claim 1 or 2. The open / close restricting portion is a protruding portion protruding from the surface of the terminal cover facing the terminal when the terminal cover is in the closed position.
The wiring device according to claim 3. The access restricting portion includes an opening provided in one of the housing and the terminal cover and formed at a position corresponding to the hooking portion in a state where the terminal cover is in the closed position.
The opening is sized so that a jig for operating the hook portion can be inserted so as to release the restriction on the movement of the terminal cover to the open position.
The wiring device according to any one of claims 1 to 4. The hook portion has a guide portion that guides the jig inserted through the opening to a predetermined operation position.
The wiring device according to claim 5. The wiring device according to any one of claims 1 to 6.
It has a function to switch the power supply status from the power supply to the load based on the set time.
Time switch. A cover body that is attached to a housing that houses terminals to which electric wires are connected and can be moved between a closed position that covers the terminals and an open position that exposes the terminals by rotating around a rotation axis. When,
A hooking portion that restricts the movement of the cover body to the open position by being hooked on the housing while the cover body is in the closed position.
With the cover body in the closed position, the access control unit that regulates the access of human hands to the hook portion, and the access control unit.
An operation unit provided at a portion facing the housing and on which a human hand's nail is caught is provided.
The operation unit is operated by hooking the claws of a human hand while the hooking portion is released from the restriction on the movement of the cover body to the open position, whereby the cover body is rotated. To move the cover body from the closed position to the open position by rotating the cover body.
Terminal cover.

Images