JP2013026036A - Wiring accessory block and switch device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiring accessory block to which a handle having a width dimension larger than the body can be attached, and to provide a switch device using the same.SOLUTION: The wiring accessory block 1 which is attached removably to the fixing frame 2 for wiring accessories and to the front side of which an operational handle 4 is attached to oscillate freely includes a box-shaped body 11, and a cover 12 attached to the body 11 so as to close the front opening thereof. An inversion part 13 for inverting an inner contact depending on the direction of oscillation is provided on the front surface of the cover 12, and a handle 4 is attached removably to the inversion part 13. Furthermore, attachment parts 12b, 12b for attaching the cover 12 to the fixing frame 2 are provided in the inversion part 13 so as to project farther outside than the body 11. According to this wiring accessory block 1, a handle 4 having a width dimension larger than the body 11 can be attached.

Description

  The present invention relates to an instrument block and a switch device using the same.

  2. Description of the Related Art Conventionally, there has been provided a terminal device that is attached to a mounting frame for a wiring device and embedded in a construction surface (see, for example, Patent Document 1). This terminal device is, for example, a switch device having a single-cut single-throw contact mechanism having a single-pole single-throw contact configuration, and a terminal block having a quick-connection terminal structure for locking an electric wire inserted from an electric wire insertion hole And a body that houses a switch block having a fixed contact and a movable contact, and a cover that covers a front opening of the body.

  A pair of attachment claws for attachment to the attachment frame is provided at both ends in the longitudinal direction of the cover, and the terminal device is attached to the attachment frame by fitting each attachment claw into the attachment hole of the corresponding attachment frame. It is attached. Also, a handle (reversing handle and handle cover) for operating the switch on / off is attached to the cover.

JP 2007-323936 A (paragraph [0020] -paragraph [0050] and FIGS. 1 to 4)

  In the terminal device shown in Patent Document 1 described above, since the mounting claws provided on the cover are fitted into the mounting frame, when the handle protruding from the position where the mounting claws are provided is attached, the handle hits the mounting frame and the handle operation is performed. could not. That is, a handle larger than the width of the cover in the direction in which the attachment claws are provided cannot be attached. Conventionally, since the width dimension of the cover is designed in accordance with the body, when a handle larger than the width dimension of the body is attached, it is necessary to change to a body and cover having a larger width dimension.

  The present invention has been made in view of the above problems, and an object thereof is to provide an instrument block to which a handle having a width larger than that of a body can be attached and a switch device using the same. .

  The instrument block of the present invention is detachably attached to a mounting frame for a wiring instrument, and an operation handle is pivotably attached to the front side. The instrument block includes a box-shaped body whose front side is open and a cover that is attached to the body so as to close the front opening of the body. The front surface of the cover is provided with a reversing portion that reverses the internal contact according to the swinging direction, and a handle is detachably attached to the reversing portion. An attachment portion for attaching the cover to the attachment frame is provided on the cover so as to protrude outward from the body.

  In this instrument block, the cover is preferably provided with an escape groove for avoiding contact of the handle when the handle is swung.

  In this instrument block, it is also preferable that a reinforcing rib is provided on the rear surface side of the attachment portion.

  The switch device of the present invention includes the instrument block, a mounting frame for an embedded wiring instrument to which the instrument block is detachably attached, and an operation handle that is swingably attached to the front side of the instrument block. It has.

  In this switch device, it is also preferable to include a blank chip that closes a portion not covered with a cover at the opening of the mounting frame.

  There is an effect that it is possible to provide an instrument block to which a handle having a larger width than the body can be attached and a switch device using the same.

It is a disassembled perspective view which shows an example of the switch apparatus of this embodiment. The same as above, (a) is an external view seen from the front, (b) is an external view seen from the back. An example of the state which removed the decorative plate from the same is shown, (a) is an external view, (b) is a sectional side view. The other example of the state which removed the decorative plate from the same is shown, (a) is an external view, (b) is a sectional side view. (A) is the external view of the instrument block which comprises the same, (b) is the external view which looked at the cover which comprises an instrument block from the back surface.

  Below, embodiment of an instrument block and a switch apparatus is described based on FIGS. The switch device of the present embodiment is used as a changeover switch that is embedded in a construction surface such as a wall surface and switches the lighting / light-off state of a lighting fixture that is constructed on a ceiling surface. In the following description, unless otherwise specified, the vertical direction in FIG. 3 (b) is the front-rear direction, the left side in FIG. 3 (b) is the lower side, the right side is the upper side, and perpendicular to the paper surface in FIG. An explanation will be given by defining the right direction as the left-right direction.

  FIG. 1 is an exploded perspective view showing an example of the switch device A of the present embodiment. The switch device A includes an instrument block 1, an attachment frame 2 to which the instrument block 1 is detachably attached from the rear, a decorative plate 3 attached to the front side of the attachment frame 2, and swinging to the front side of the instrument block 1. And a handle 4 that can be freely attached.

  The mounting frame 2 is a resin molded product made of an insulating resin material and is formed in a rectangular frame shape having an opening 21 at the center for exposing the front surface (functional surface) of the instrument block 1. On the left and right sides of the opening 21 in the mounting frame 2, there is a length through which mounting screws (not shown) for attaching the mounting frame 2 to an embedding box (not shown) embedded in the construction surface are inserted. Hole-shaped screw insertion holes 25 are respectively provided. In the mounting frame 2, a pair of locking holes 22, 22 are provided on both the upper and lower sides of the opening 21. Is provided. Further, locking holes 24 are respectively provided at the four corners of the mounting frame 2.

  The decorative plate 3 is a resin molded product made of an insulating resin material, and is formed in a rectangular frame shape having an opening 31 at the center for exposing the front surface of the instrument block 1 attached to the attachment frame 2. . Further, the decorative plate 3 is set to have a size that can cover the entire front surface of the mounting frame 2, that is, an outer dimension slightly larger than the mounting frame 2. Further, a locking claw 32 (see FIG. 2B) is provided on the rear surface side of the decorative plate 3 at a portion corresponding to the locking hole 24 of the mounting frame 2. Therefore, the decorative plate 3 is attached to the attachment frame 2 by engaging the respective engagement claws 32 of the decorative plate 3 with the corresponding engagement holes 24 of the attachment frame 2.

  The handle 4 is a resin molded product made of an insulating resin material, and is formed in a rectangular plate shape that is set to approximately the same size as the opening size of the opening 31 of the decorative plate 3. A protrusion 41 indicating the pressing position of the handle 4 is provided at the left and right center of the side. A plurality of locking claws 42 (see FIG. 3B) are provided on the rear surface side of the handle 4.

  As shown in FIG. 1, the instrument block 1 includes a rectangular box-shaped body 11 whose front side is open, a cover 12 that is attached to the body 11 so as to close the front opening of the body 11, and a terminal board that constitutes an internal contact. 14 and 15 and a contact plate 16. The instrument block 1 is electrically connected to the terminal plates 14 and 15 and also has a plurality (four in FIG. 1) for locking electric wires (not shown) inserted from electric wire insertion holes 11a described later. A locking spring 17 and a reversing portion 13 for reversing the internal contact according to the swinging direction are provided. Furthermore, the instrument block 1 includes a plurality (two in FIG. 1) of release buttons 18 for releasing the lock of the electric wire by the lock spring 17.

  The body 11 is a resin molded product made of an insulating resin material, and a pair of assembly protrusions 11c and 11c are provided on both side walls in the left-right direction of the body 11 so as to be separated in the vertical direction. . In addition, at the four corners of the bottom surface (rear surface) of the body 11, there are provided wire insertion holes 11a for inserting electric wires (not shown) from an external power source or a load into the body 11 (see FIG. 2B). ). Further, on the bottom surface of the body 11, an operation hole 11 b into which the tip of a tool (for example, a flat-blade screwdriver) can be inserted is provided in the vicinity of the wire insertion hole 11 a, and this operation hole 11 b operates the release button 18. Used for. Here, the vertical dimension (width dimension) of the body 11 is set to be smaller than the vertical dimension of the opening 21 of the mounting frame 2.

  The cover 12 is a resin molded product made of an insulating resin material, and has a rectangular frame-shaped cover body 12 a formed to have substantially the same dimensions as the outer dimensions of the body 11. Mounting portions 12b and 12b projecting outward from the body 11 are integrally provided on both sides in the vertical direction of the cover body 12a. Engaging grooves 12d are provided on both the left and right sides of the opening 12c of the cover main body 12a so that the reversing portion 13 is swingably engaged (only one side is shown in FIG. 1). Further, a pair of assembly tongue pieces 12e, 12e are provided on both side walls in the left-right direction of the cover body 12a so as to protrude rearward and to be separated in the vertical direction. Accordingly, the assembly protrusions 11c of the body 11 corresponding to the assembly holes of the assembly tongue pieces 12e of the cover 12 are respectively inserted, and the assembly protrusions 11c corresponding to the assembly tongue pieces 12e are respectively locked, thereby the body 11 and the cover. 12 are combined.

  Each mounting portion 12b of the cover 12 is provided with a pair of locking claws 12g and 12g at portions corresponding to the pair of locking holes 22 and 22 of the mounting frame 2, respectively. The instrument block 1 is attached to the attachment frame 2 by being respectively engaged with the engaging holes 22 to be performed. Further, a U-shaped escape groove 12f is provided between the cover body 12a and each mounting portion 12b. Further, as shown in FIG. 5B, reinforcing ribs 12h are provided on the rear surface side of each mounting portion 12b, and the strength of the mounting portion 12b is improved by the reinforcing rib 12h.

  Here, a terminal plate 14 is housed on one end side (upper side in FIG. 1) of the body 11 in the up-down direction, and a terminal plate 15 is placed on the other end side (lower side in FIG. 1) of the body 11 in the up-down direction. The contact plate 16 is housed in a swingable manner between the terminal plates 14 and 15. The body 11 has a plurality (four in FIG. 1) of locking springs 17 that hold electric wires (not shown) together with the terminal plates 14 and 15, and electric wires formed by the terminal plates 14 and 15 and the locking springs 17. A release button 18 for releasing the lock is stored.

  The terminal plate 14 is formed in a substantially U shape by a plate material made of a conductive material (for example, a copper-based metal material), and a fixed contact 14a is integrally formed at one end side in the vertical direction (lower side in FIG. 1). Is provided. Similarly to the terminal plate 14, the terminal plate 15 is formed in a substantially U shape by a plate made of a conductive material, and is electrically connected to the contact plate 16 on the other end side (upper side in FIG. 1) in the vertical direction. The connecting piece 15a is integrally provided. Further, the contact plate 16 is formed in a substantially U shape by a plate made of a conductive material like the terminal plates 14 and 15, and is in contact with the fixed contact 14a on the other end side in the vertical direction (upper side in FIG. 1). A movable contact 16a that comes into contact with each other is provided integrally. When the movable contact 16a of the contact plate 16 comes into contact with the fixed contact 14a of the terminal plate 14 according to the operation of the reversing unit 13, the terminal plate 14 and the terminal plate 15 are brought into conduction via the contact plate 16 ( (Refer FIG.4 (b)). The operation will be described later.

  Each locking spring 17 is made of a conductive material like the terminal plates 14, 15 and the contact plate 16, and is housed in the body 11 in a form corresponding to each wire insertion hole 11 a provided in the body 11. In the present embodiment, two lock springs 17 are arranged corresponding to each of the terminal plates 14 and 15, and so-called quick connection terminals are configured together with the terminal plates 14 and 15. Therefore, the terminal plates 14 and 15 and the corresponding electric wires are electrically connected to each other by sandwiching the electric wires between the terminal plates 14 and 15 and the corresponding locking springs 17.

  The release button 18 is for releasing the mechanical holding of the electric wire by the lock spring 17 and is formed of a resin molded product formed in a prismatic shape with the front-rear direction as the axial direction. In the present embodiment, the release button 18 accommodated in the body 11 in a form facing the two lock springs 17 corresponding to the terminal plate 14 and the two lock springs 17 corresponding to the terminal plate 15 are opposed. And a release button 18 housed in the body 11 in the form. These release buttons 18 are housed in the body 11 so as to face the operation holes 11b. When the tip of the tool is inserted into the body 11 through the operation hole 11b, the corresponding release button 18 is pushed forward, and the lock spring 17 is pushed forward by the release button 18 so that the electric wire of the lock spring 17 is pushed. Since the mechanical holding is released, the electric wire can be pulled out.

  The inversion part 13 is a resin molded product made of an insulating resin material, and is formed in a rectangular box shape. Engaging protrusions 13a that are swingably engaged with the engaging grooves 12d of the cover 12 are provided on both side walls in the left-right direction of the reversing portion 13 (only one side is shown in FIG. 1). Further, locking projections 13b for attaching the handle 4 are provided on both side walls in the vertical direction of the reversing portion 13, respectively. Further, an insertion recess 13c (see FIG. 4B) into which one end side of the reversing spring 6 is inserted is provided on the rear surface side of the reversing portion 13. The other end side of the reversing spring 6 is inserted into a recess of the contact plate 16 arranged in a shape corresponding to the insertion recessed portion 13c of the reversing portion 13 (see FIG. 4B). Here, the width dimension of the engagement groove 12d provided in the cover 12 is set to be larger than the width dimension of the engagement protrusion 13a provided in the reversing portion 13, and therefore the reversing portion 13 is set at a predetermined swing angle. It can be swung.

  Here, since the opening dimension in the left-right direction of the opening 21 of the mounting frame 2 is larger than the left-right dimension of the cover 12, the opening 21 cannot be blocked by the cover 12 even if the instrument block 1 is mounted on the mounting frame 2. . Therefore, when the handle 4 is removed, the body may come into contact with the charging portion from the left and right sides of the instrument block 1. Therefore, in the present embodiment, the blank chip 5 is provided in order to block a portion of the opening 21 of the mounting frame 2 that is not covered with the cover 12.

  The blank chip 5 is a resin molded product made of an insulating resin material, has a plate-shaped chip body 51 that is long in the vertical direction, and is mounted to protrude forward on both sides of the chip body 51 in the vertical direction. The piece 52 is provided integrally. Each mounting piece 52 is provided with a locking claw 53 at a portion corresponding to the locking hole 23 of the mounting frame 2. Therefore, the blank chip 5 is attached to the mounting frame 2 by locking each locking claw 53 of the blank chip 5 in the corresponding locking hole 23 of the mounting frame 2.

  Next, the assembly procedure of the instrument block 1 will be described. After the operator stores the terminal plates 14 and 15, the contact plate 16, the lock spring 17 and the release button 18 in the body 11, the reversing unit 13 is stored in the body 11 from above. At this time, the other end of the reversing spring 6 having one end inserted into the insertion recess 13 c is inserted into the recess of the contact plate 16. Finally, when the operator locks the assembly protrusions 11c of the body 11 corresponding to the assembly tongues 12e of the cover 12, the body 11 and the cover 12 are coupled to complete the assembly of the instrument block 1 (FIG. 5 (a)). At this time, the engaging protrusions 13a of the reversing portion 13 are respectively engaged with the corresponding engaging grooves 12d of the cover 12, and the reversing portion 13 is disposed so as to be swingable.

  Next, the construction procedure of the switch device A will be described. An operator attaches the instrument block 1 to the attachment frame 2 by engaging the respective locking claws 12g provided on the cover 12 of the instrument block 1 with the corresponding engagement holes 22 of the attachment frame 2 respectively. In addition, the worker attaches each blank chip 5 to the attachment frame 2 by engaging the respective engagement claws 53 provided on each blank chip 5 with the corresponding engagement holes 23 of the attachment frame 2. In this state, the opening 21 of the mounting frame 2 is closed with the instrument block 1 and the blank chip 5 so that the operator cannot contact the charging portion from the front side.

  Next, the operator fixes the attachment frame 2 to the embedding box (not shown) using attachment screws (not shown) inserted through the screw insertion holes 25 of the attachment frame 2. Furthermore, the operator attaches the handle 4 to the reversing unit 13 by engaging the respective locking claws 42 provided on the handle 4 with the corresponding locking projections 13 b of the reversing unit 13. Finally, when the operator locks each locking claw 32 provided on the decorative plate 3 in the corresponding locking hole 24 of the mounting frame 2, the decorative plate 3 is mounted on the mounting frame 2 and the switch device. Construction of A is completed.

  Further, the operation of the switch device A will be described with reference to FIG. When the user pushes the lower end side (the left side in FIG. 4B) of the handle 4 backward (the lower side in FIG. 4B), the handle is centered on the contact portion between the engagement groove 12d and the engagement protrusion 13a. 4 and the reversing part 13 rotate counterclockwise in FIG. At this time, the reversing spring 6 is pushed upward (the right side in FIG. 4B) by the reversing portion 13 so as to protrude upward, and the contact plate 16 is pushed upward accordingly, and the movable contact 16a of the contact plate 16 is moved. Contacts the fixed contact 14a of the terminal board 14. Here, since the lower end portion of the contact plate 16 is in contact with the connection piece 15a of the terminal plate 15, the terminal plate 14 and the terminal plate 15 are brought into conduction through the contact plate 16 (FIG. 4B). reference).

  When the user pushes the upper end side (the right side in FIG. 4B) of the handle 4 backward from the state shown in FIG. 4B, the handle 4 and the reversing unit 13 center on the contact portion as shown in FIG. ) Rotate clockwise in the middle. At this time, the reversing spring 6 is pushed downward (left side in FIG. 4B) by the reversing portion 13 to be convex downward, and accordingly, the contact plate 16 is also pushed downward to move the movable contact of the contact plate 16. 16 a is separated from the fixed contact 14 a of the terminal board 14. As a result, the terminal plate 14 and the terminal plate 15 are brought out of conduction.

  Here, FIGS. 3A and 3B show an example of the switch device A with the decorative plate 3 removed. In this example, the vertical dimension (width dimension) of the handle 4 is set to 42 mm. 4A and 4B show another example of the switch device A with the decorative plate 3 removed, and in this example, the vertical dimension of the handle 4 is set to 52 mm. Although not shown in the figure, by providing a locking claw 42 at the same position as the handle 4 shown in FIGS. 3 and 4, a handle having a smaller vertical dimension than the handle 4 shown in FIG. 3 (for example, the vertical dimension is 36 mm). It is also possible to attach a handle. In other words, according to the switch device A of the present embodiment, when the size of the handle 4 is changed, only the handle 4 and the decorative plate 3 need to be replaced, which facilitates the replacement work and suppresses the cost increase. .

  By the way, the swing angle of the handle 4 is determined by the width dimension of the engagement groove 12d of the cover 12 and the width dimension of the engagement protrusion 13a of the reversing portion 13, and is constant regardless of the size of the handle 4. When the vertical dimension is large, the handle 4 may come into contact with the cover 12. In the present embodiment, the cover 12 is provided with the relief groove 12f, and even when the handle 4 becomes large, the end of the handle 4 enters the escape groove 12f, so that the handle 4 is prevented from coming into contact with the cover 12. Can do.

  Thus, according to the present embodiment, since the attachment portions 12b, 12b for attaching the instrument block 1 to the attachment frame 2 are provided outside the body 11, the vertical dimension (width dimension) is larger than that of the body 11. A large handle 4 can be attached. Moreover, by using this instrument block 1, a plurality of types of handles 4 can be attached. Further, since the size of the body 11 remains the original size, a space for storing the extra wiring length can be secured in the embedding box, and as a result, the body 11 fits in the embedding box and is stored well. be able to. Furthermore, since the strength of the mounting portion 12 can be increased by providing the reinforcing rib 12h on the back surface of each mounting portion 12b, it is possible to suppress the cover 12 from being cracked or deformed during the operation of the handle. It is possible to prevent the instrument block 1 from falling off the mounting frame 2.

  Moreover, according to this embodiment, the switch apparatus A which can respond to the handle | steering-wheel 4 of a multiple types of magnitude | size can be provided by using the above-mentioned instrument block 1. FIG. Furthermore, in the state where the handle 4 is removed, there is a possibility that an operator may come into contact with the charging part from a part not covered with the cover 12 in the opening 21 of the mounting frame 2, but the part is blocked with the blank chip 5. Thus, the operator can be prevented from coming into contact with the charged part.

DESCRIPTION OF SYMBOLS 1 Instrument block 2 Mounting frame 4 Handle 11 Body 12 Cover 12b Mounting part 13 Inversion part

Claims (5)

  In a fixture block that is detachably attached to a mounting frame for a wiring fixture, and an operation handle is swingably attached to the front side, a box-like body that opens on the front side and a front opening of the body are closed. A cover attached to the body, and a front surface of the cover is provided with a reversing portion for reversing an internal contact in accordance with a swinging direction, and the handle is detachably attached to the reversing portion. A mounting block for mounting the cover to the mounting frame is provided on the cover so as to protrude outward from the body.   The instrument block according to claim 1, wherein the cover is provided with an escape groove for avoiding contact of the handle when the handle is swung.   The instrument block according to claim 1, wherein a reinforcing rib is provided on a rear surface side of the attachment portion.   The instrument block according to any one of claims 1 to 3, a mounting frame for an embedded wiring instrument to which the instrument block is detachably attached, and a swingable attachment to the front side of the instrument block. A switch device comprising an operation handle.   The switch device according to claim 4, further comprising a blank chip that closes a portion of the opening of the mounting frame that is not covered with the cover.

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