JP4297428B2 - Protection plate locking member and protection plate locking structure - Google Patents

Description

  The present invention covers a protective plate locking member and a protective plate locking that covers an electric device and wiring incorporated in a panel such as a distribution board, a distribution board, etc., and locks a protective plate for preventing a live part from being touched. Concerning structure.

  Panels such as distribution boards and switchboards are provided with protective plates so that the live parts are not touched directly, and the operator opens or removes the protective plates only for internal inspection and repair. Working. Such a protective plate is locked by a protective plate locking member, and the protective plate locking member is required to be able to be engaged and disengaged by a simple operation and to be surely locked in a locked state. . For example, Japanese Patent Application Laid-Open No. H10-228867 has been proposed as a device that satisfies such a demand and can securely open and close the protective plate with one touch.

  What is disclosed in Patent Document 1 includes a main body that is locked to a base, a base portion that attaches the main body to a protective plate, and a movable spring that contacts the base. In this device, a lever is provided at one end of the main body, and a hook portion is provided at the other end, and the hook portion is locked by a support provided on the base by the elastic force of the movable spring. Kept. When the lever is raised, the hook part is detached from the support part, and the protective plate is separated from the base by the restoring force of the movable spring, so that it can be opened and closed by grasping the end face of the lever or the protective plate.

However, this is a little opening of the protective plate from the base than the movable spring, but the movable spring urges the lever to the prone side, which is the locking direction of the hook part, so once you release your fingers from the lever. Since the lever is almost in a lying position, it is difficult to open and close by holding the lever again, and it will be necessary to open and close by holding the end face of the protective plate. There was a risk of rubbing hands.
JP 2002-218627 A

  The present invention solves the above-mentioned problems, and the protection plate can be opened a little by pulling up the lever. It was made to provide a stop structure.

The protection plate locking member of the present invention completed in order to solve the above problems includes a locking member main body including a hook portion to be locked to the locked portion and a lever portion for operating the hook portion to be engaged and disengaged. A protective plate locking member that is rotatably supported in the case, and when the lever portion is pulled up, the locking member main body is reversely rotated to unlock the hook portion from the locked portion. A holding mechanism that holds the lever in a raised state is provided with a gap between the side surface of the locking member main body and the inner surface of the case main body facing the holding mechanism , and the locking protrusion is formed on the side surface of the locking member main body. A protective plate with a protective plate locking member attached to the inner surface of the case body by pressing the locked portion with the lever portion pulled up. And when the protective plate is closed, it comes into contact with the locked part and locks. The contact member main body is provided with an abutting portion for rotating the member main body to release the holding of the holding mechanism portion. In addition, an inverted U-shaped recess is provided to fit the cylindrical locked part from the center lower end to the upper part of the left and right side plate parts of the case, and an inverted U-shaped when the hook part is locked recess and that the hook portion is both a function as a hinge to囲装a cylindrical object to be locked part and be Rukoto are preferred. Furthermore, such a protective plate locking member is provided on both ends of the protective plate to form a protective plate locking structure.

  The protective plate locking member of the present invention is provided with a holding mechanism portion that holds the main portion of the locking member in a state in which the lever portion is pulled up when the lever portion is pulled up, and is covered in a state in which the lever portion is pulled up. Since the abutting portion that presses the locking portion and opens the protective plate to which the protective plate locking member is attached is provided mainly on the locking member, the lever portion is held in the raised state and the protective plate is Even if there are a plurality of protective plate locking members, if the lever portion is pulled up sequentially, the lever portion is held in that state and does not need to be operated at the same time. Further, since the protective plate can be opened and closed by holding the held lever portion, it is not necessary to grasp the end surface of the protective plate, so that there is no possibility that the hand is rubbed by the bent portion of the protective plate end surface or the wiring on the back surface of the protective plate.

  Further, when the protective plate is closed, the abutting portion comes into contact with the locked portion and rotates the locking member main body to release the holding mechanism portion. The hook portion is locked to the locked portion. As a result, when the protective plate is closed, the protective plate is locked only by the operation of closing the protective plate. Further, since the lever portion is pulled up when the hook portion is not locked to the locked portion, there is an advantage that it can be easily recognized that the hook portion is not locked. As described above, the operation is extremely simple and excellent in workability in both cases of opening and closing the protective plate.

  In addition, the hook portion is locked by providing an inverted U-shaped recess capable of fitting a columnar locked portion from the center lower end to the upper portion of the left and right side plate portions of the case. In this case, since the inverted U-shaped recess and hook part surround the columnar locked part and also have a function as a hinge, the protection plate can be attached to either the left or right side by attaching it to both ends of the protection plate. But it can be opened and the protective plate can be removed. Therefore, the opening direction can be selected depending on the installation location and the contents of work such as inspection and repair, or can be detached, so that there is an advantage that work such as inspection and repair in a narrow place becomes easy. Furthermore, the protective plate locking structure in which the protective plate locking members are provided on both ends of the protective plate can open the protective plate on either the left or right side, and can also remove the protective plate.

Next, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a case made of a plastic material such as polypropylene or polyethylene. The case 1 has a flange portion 12 stretched around the upper edge of a square frame-like case body 11. Reference numeral 2 denotes a locking member main body incorporated in the case 1 so as to be pivotable in the front-rear direction around the shaft portion 3. The locking member main body 2 has a lever portion 21 upward from the shaft portion 3 as a starting point. Is formed with a horizontal U-shaped recessed hook portion 22 having a front opening downward, and the hook portion 22 is attached to a distribution board or the like when the lever portion 21 is in a lying state. The hook portion 22 releases the lock to the locked portion 4 when the lever portion 21 is pulled up by locking the portion 4.

  Further, the holding mechanism portion 5 that holds the pulled-up state of the lever portion 21 that releases the locking of the hook portion 22 to the locked portion 4 between the side surface of the locking member main body 2 and the inner surface of the case body 11. Is provided. The holding mechanism 5 is provided with a gap between the side surface of the locking member main body 1 and the inner surface of the case main body 11 facing the locking member main body 1, and the locking projection 5 a is provided on the side surface of the locking member main body 2. Is formed by providing a chevron-shaped protrusion 5b with a guide surface on the inner surface thereof, and the latching protrusion 5a gets over the chevron-shaped protrusion 5b and is locked to the chevron-shaped protrusion 5b by strongly pulling up the lever portion 21. It is.

  Further, when the lever portion 21 is pulled up above the locking member main body 2, that is, the opening of the hook portion 22 to release the hook portion 22 from being locked to the locked portion 4, it comes into contact with the locked portion. Then, a contact portion 22a is provided that presses the locked portion 4 to pull up the protective plate locking member, that is, the protective plate 6 to which the protective plate locking member is attached to open the protective plate 6.

  As shown in FIG. 2, the case 1 is composed of a left frame portion 1a and a right frame portion 1b having a U-shaped cross section that can be divided into left and right, and the divided left half front plate portion 13a and right half plate portion 13a. The front plate portion 13b, the left half rear plate portion 14a, and the right half rear plate portion 14b are arranged at one position below the flange portion 12, that is, the left half front plate portion 13a and the locking claw 15a provided on the left half rear plate portion 14a are arranged on the other side. That is, it is integrated with the locking recess 15b provided in the right half front plate portion 13b and the right half rear plate portion 14b.

  The shaft portion 3 of the locking member main body 2 is composed of a distal end shaft portion 3a projecting in two steps on the side surface of the hook portion main body 2 and a proximal end spacer portion 3b. The end face of the spacer 3b is brought into contact with the inner peripheral surface of the shaft hole 31 so as to be opposed to the side face of the locking member main body 2 by being pivotally supported by the shaft hole 31 formed through the left and right side plate portions 16 and 17 of the first. A gap is provided between the inner surface of the case body 11, that is, the left and right side plate portions 16 and 17.

  The left and right side plate portions 16 and 17 are provided with inverted U-shaped concave portions 16a and 17a from the center lower end toward the upper portion. Thus, when the locked portion 4 is cylindrical, the locked portion 4 is locked to the hook portion 22 in a state of being fitted to the inverted U-shaped recesses 16a and 17a. The concave portions 16a and 17a and the hook portion 22 surround the cylindrical locked portion 4 and have a function as a hinge. Further, the left and right side plate portions 16 and 17 are provided with locking claws 18 for fixing the case 1 to the flange portion 12 in a state where the case main body 11 is fitted in the mounting hole 6a formed through the protective plate 6. is there.

  In the figure, reference numeral 7 denotes a spring that urges the locking member main body 2 to a posture in which the lever portion 21 is tilted. 8 is a lock member that locks the lever portion 21 by being slidably incorporated in a portion of the lever portion 21 located in the flange portion 12 and locked in a locking hole 12a provided in the inner surface of the flange portion 12; Reference numeral 9 denotes a through hole provided in the lever portion 21 and the flange portion 12 in order to mount a sealing member. Further, the locked portion 4 is formed in a columnar shape that is bridged between the bifurcated support frame portions 42 and 42 provided at the distal end portion of the support leg 41.

  The protective plate locking member configured as described above is configured so that the case main body 11 of the case 1 is fitted into the mounting hole 6 a pierced through the protective plate 6 so that the protective plate is interposed between the flange portion 12 and the locking claw 18. It is attached with 6 in between. FIG. 3 shows a state in which this protective plate locking member is attached to one end of the protective plate 6 and the other end is hinged to the distribution board by a hinge 100. As shown in FIG. The lever portion 21 is in a prone state with the hook portion 22 being locked to the locked portion 4 provided in FIG. When the lever portion 21 is pulled up from this state, the locking member main body 21 rotates backward about the shaft portion 3 so that the hook portion 22 is detached from the locked portion 4 and the locking member as shown in FIG. The protective plate locking member is attached by the reaction that the contact portion 22 a provided above the opening of the main body 1, that is, the hook portion 22 contacts the locked portion 4 and presses the locked portion 4. The protection plate 6 is pushed up and opened from the position of the protection plate 6 indicated by a two-dot chain line.

  In this case, the holding mechanism portion 5 that holds the pulled-up state of the lever portion 21 that releases the locking of the hook portion 22 to the locked portion 4 between the side surface of the locking member main body 2 and the inner surface of the case body 11 is provided. Since the lever portion 21 is provided, the lever portion 21 reliably holds the pulled-up state. The holding mechanism 5 is provided with a gap between the side surface of the locking member main body 2 and the inner surface of the case main body 11 facing the locking member main body 2, and the locking protrusion 5 a is provided on the side surface of the locking member main body 1. The projection 1 is provided with a guide-shaped projection 5b on the inner surface, and the case 1 is made of a plastic material by strongly pulling up the lever portion 21, so that the locking projection 5a is formed by the elasticity of the material. It climbs over the shape protrusion 5b and engages with the mountain-shaped protrusion 5b.

  Further, the case 1 is constituted by a left frame body portion 1a and a right frame body portion 1b having a U-shaped cross section that can be divided into right and left, and the divided left half front plate portion 13a, right half front plate portion 13b, and left half rear portion. One of the plate portion 14a and the right half rear plate portion 14b at the lower position of the flange portion 12, that is, the left half front plate portion 13a, and the other one, that is, the locking claw 15a provided on the left half rear plate portion 14a, that is, the right half front plate portion 13b, The locking recess 15b provided in the right half rear plate portion 14b is locked and integrated so that when the locking projection 5a gets over the mountain-shaped projection 5b provided on the inner surface of the case body 11, the left frame body is obtained. The lower part of the left half front plate part 13a and the right half front plate part 13b and the left half rear plate part 14a and the right half rear plate part 14b of the part 1a and the right frame body part 1b is slightly locked in the left and right. Is easy.

  As described above, the lever portion 21 maintains the pulled-up state, and accordingly the hook portion 22 and the released state are maintained, so that the protection plate 6 can be opened by grasping the lever portion 21. In this case, even if the protection plate 6 is large and has a plurality of protection plate locking members attached thereto, the lever portions 21 of the protection plate locking members are held in that state if they are pulled up sequentially. There is no need to operate. Accordingly, the protection plate 6 can be opened by holding the lever portion 21, and there is no need to grasp the end surface of the protection plate 6, so that there is no possibility that the hand is rubbed by the bent portion of the protection plate end surface or the wiring on the back surface of the protection plate. Further, in the released state where the hook portion 22 is not locked to the locked portion 4, the state in which the lever portion 21 is pulled up by the holding mechanism portion 5 is securely held, so that it is not easily locked. It is possible to reliably prevent forgetting to close the protective plate 6 by visual recognition.

  Further, when the protective plate 6 is closed, the contact member 22 a provided above the opening of the locking member main body 2, that is, the hook portion 22 is engaged only by pushing the protective plate 6 without operating the lever portion 21. The hook member 22 is locked to the locked portion 4 by rotating the locking member main body 2 in contact with the locking portion 4 and releasing the holding of the holding mechanism portion 5, so that the lever portion 21 is operated. The hook portion 22 can be locked to the locked portion 4 without doing so. In this case, as shown in the drawing, if the spring 7 for biasing the locking member main body 2 to the posture in which the lever portion 21 is tilted is incorporated, the hook portion 22 is securely engaged without the lever portion 21 being pulled up. It will be locked to the stop 4.

In addition, if the left and right side plate portions 16 and 17 of the case 1 have a hinge function that allows the locked portion 4 to intervene below the front half, the locked portion 4 may be columnar or plate-shaped, If the left and right side plate parts 16 and 17 are provided with inverted U-shaped concave parts 16a and 17a from the lower end to the upper part at the front and rear centers of the left and right side plate parts 16 and 17, respectively, 4 is engaged with the hook portion 22 in a state of being fitted into the inverted U-shaped recesses 16a and 17a, so that the inverted U-shaped recesses 16a and 17a and the hook portion 22 are columnar locked portions. 4 is suitable as a hinge. Then, as shown in FIG. 6, the protective plate 6 can be opened on either the left or right side as shown in FIGS. 7 and 8 by being attached to both ends of the protective plate 6, and as shown in FIG. Can be removed.

It is a perspective view which shows embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the principal part of embodiment of this invention. It is a schematic side view of the distribution board equipped with the protection board which attached the protection board latching member of this invention. It is a side view which abbreviate | omits a right frame body part by making a lever part a prone state. It is a side view which abbreviate | omits and shows a right frame body part as the state which pulled up the lever part. It is a schematic side view which shows the state which attached the protection board latching member of this invention to the both ends of the protection board. It is a schematic side view which shows the state which opened the protection board of FIG. 6 from one side. It is a schematic side view which shows the state which opened the protection board of FIG. 6 from the other side. It is a schematic side view which shows the state which removed the protective plate of FIG.

Explanation of symbols

1 case
16 Side plate
17 Side plate
16a recess
17a Concave 2 Mainly locking member
21 Lever section
22 Hook part
22a Contact part 4 Locked part 5 Holding mechanism part

Claims (3)

A protective plate latching member in which a latching member main body having a hook part latched to a to-be-latched part and a lever part for operating the hook part is rotatably supported in a case. When the lever is pulled up, the locking member main body is reversely rotated so that the hook portion is released from the locked portion and the lever portion is lifted to hold the holding mechanism portion on the side surface of the locking member main body. A gap is provided between the inner surface of the case body and the inner surface of the case body, and a locking protrusion is formed on the side surface of the locking member main body, and a mountain-shaped protrusion with a guide surface is formed on the inner surface of the case body. Furthermore, while the lever portion is pulled up, the locked portion is pressed to open the protective plate to which the protective plate locking member is attached, and when the protective plate is closed, it comes into contact with the locked portion and engages. The abutment part for releasing the holding of the holding mechanism part by rotating the main part of the stopping member is a locking part. Protection plate engaging member, characterized in that provided in the principal. An inverted U-shaped recess that can be fitted with a column-shaped locked portion from the center lower end to the upper portion of the left and right side plate portions of the case is provided , and when the hook portion is locked, an inverted U-shaped recess is provided . The protection plate locking member according to claim 1, wherein the hook portion surrounds the cylindrical locked portion and has a function as a hinge .   The protection board latching structure which provided the protection board latching member of Claim 1 or 2 in the both ends side of the protection board.

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