JP6023995B2 - Lock structure of electrical equipment storage box using cylinder lock - Google Patents

Description

The present invention relates to a locking structure for an electrical equipment storage box using a cylinder lock for locking the door of the electrical equipment storage box.

  A cylinder lock is attached to the door of an electrical equipment storage box such as a switchboard or distribution board as shown in Patent Document 1 and Patent Document 2, for example, and the locking piece is boxed by rotating the cylinder lock. The door is locked to a receiving portion formed on the main body, and the door cannot be opened without a key. This lock structure enhances security by preventing tampering.

  However, in order to assemble the lock structure of Patent Document 1, first, the cylinder lock is inserted from the front side of the door, the cylinder lock holding member and the waterproof collar are attached, and then the cylinder lock is opened from the back side of the door. It is necessary to fix the retaining member with screws so that it does not come off, and to attach a locking piece that locks the door and the box body, which requires a large number of assembly steps.

  In the case of Patent Document 2, it is necessary to attach the sealing member while pressing the lock part from the front side of the door with one hand, and then to attach the locking piece while pressing the cylinder lock. There was a problem that man-hours were large.

JP 2008-190132 A JP 2009-249890 A

Accordingly, an object of the present invention is to solve the above-mentioned conventional problems, and to provide a lock structure for an electric equipment storage box using a cylinder lock, which can reduce the number of parts and the number of assembling operations and can reduce the cost. That is.

Invention of Claim 1 made | formed in order to solve said subject is the locking structure of the electric equipment storage box using the cylinder lock attached to the door of the box main body of the electric equipment storage box, The cylinder lock has a main body cylinder portion that accommodates the tumbler portion, a locking projection that engages with a receiving portion of the box main body, and a locking projection for preventing falling off. the locking projections and locking projections missing for dropout prevention has a structure formed integrally with the main body tube portion, the door, have a cylinder lock housing part, the door in the door open condition upon rotation of the inserted the cylinder lock from the front of, and is characterized in that the retaining projection is fixed by engagement with the cylinder lock housing portion.

  The invention of claim 2 made to solve the above-mentioned problem is characterized in that the locking projection and the retaining projection of the cylinder lock are the same projection.

According to a third aspect of the present invention, in the first aspect of the present invention, a convex portion is formed on the cylinder portion of the main body of the cylinder lock, and a protrusion receiving portion is formed on the cylinder lock storage portion as a retaining member for the convex portion of the cylinder lock It is characterized by that.

The locking structure of the electrical equipment storage box using the cylinder lock according to claim 1 is a lock that engages with the receiving portion of the box main body on the side surface of the main body cylinder portion that stores the tumbler portion. Since the projection has both a function and a retaining function to prevent it from falling off, it can be attached to the door simply by rotating the cylinder lock inserted from the front of the door when the door is open. Thus, there is no need to work from the back side of the door or to attach a retaining member or a locking piece. For this reason, the number of parts and the number of assembly work steps can be reduced.

  If the locking protrusion and the retaining protrusion of the cylinder lock are made the same protrusion as in claim 2, the structure becomes simple and the number of parts can be reduced.

According to the lock structure of the third aspect , the convex portion is formed in the main body cylinder portion of the cylinder lock, and the protruding portion receiving portion is formed as a retaining portion of the convex portion, so that the cylinder lock can be prevented from falling off. .

It is a general view of the electric equipment storage box. It is an external appearance perspective view of the cylinder lock of a 1st embodiment. It is an external appearance perspective view of the cylinder lock of a 1st embodiment. It is a front perspective view of the cylinder lock storage part formed in the door. It is a back perspective view of a cylinder lock storage part. It is a back perspective view showing the state where the cylinder lock was engaged with the cylinder lock storage part. It is a front perspective view which shows the receiving part by the side of a box main body. It is a back perspective view which shows the receiving part by the side of a box main body. It is a rear perspective view which shows a mode that the door which attached the cylinder lock is closed. It is sectional drawing which shows a locked state. It is sectional drawing which shows the state which used the padlock together. It is an external appearance perspective view of the cylinder lock of 2nd Embodiment. It is an external appearance perspective view of the cylinder lock of 2nd Embodiment. It is explanatory drawing of the hole shape of a cylinder lock storage part. It is a perspective view which shows the state which inserts a cylinder lock. It is a perspective view showing the state where the first projection hits the receiving part of the cylinder lock storage part. It is a perspective view which shows the state which rotated the cylinder lock 45 degrees. It is a back perspective view which shows the state which rotated the cylinder lock 45 degrees. It is a back perspective view showing the state where a cylinder lock was pushed. (A) It is a whole perspective view just before fixing a cylinder lock to a door part. (B) (a) It is the whole perspective view seen from a different angle of a figure. It is a figure which shows a state when a latching piece is moved downward (removable position) in the state which inserted the cylinder lock.

The first embodiment of the present invention will be described below.
FIG. 1 is an overall view of an electric equipment storage box, 1 is a box body, 2 is a door that covers the opening, 3 is a side of the door 2 opposite to the hinge, and protrudes outward from the opening. Is a handle. The cylinder lock 10 is provided on the handle 3 and locks the door 2 against the box body 1. By attaching the cylinder lock 10 to the handle 3 formed so as to protrude outward from the opening of the box body 1, there is no possibility that rainwater or the like may enter the inside of the box body 1 from the mounting portion of the cylinder lock 10. The effective internal space of 1 is not reduced.

  2 and 3 are external perspective views of the cylinder lock 10 of the present invention. Reference numeral 11 denotes a main body cylinder portion of the cylinder lock 10, which houses the tumbler portion 12. An upper plate 14 having a key insertion part 13 is formed at the front end of the main body cylinder part 11. Further, on the left and right side surfaces of the main body cylinder portion 11, rotation suppression portions 15 extending in the axial direction are projected. Further, at the rear end portion of the main body cylinder portion 11, a locking projection that engages with the receiving portion of the box main body 1 and is locked and a drop-out prevention projection for preventing the dropout are integrated with the main body cylinder portion 11. Is formed. As a result of the integration, work such as attaching a retaining member from the back side of the door as in the prior art becomes unnecessary.

  In this embodiment, the locking protrusions and the drop-preventing protrusions for preventing dropping are the same protrusion 16. That is, the block-shaped protrusion 16 serves as both the locking protrusion and the retaining protrusion. The cylinder lock 10 can be reduced in size by using both the locking projection and the retaining projection. Further, in this embodiment, the upper plate 14, the rotation suppressing portion 15, and the protrusion 16 are all integrally formed with the main body cylinder portion 11. When the cylinder lock 10 is viewed from the front, the protrusion 16 is hidden by the upper plate 14 and cannot be seen. As shown in FIG. 5 and the like, the tip end side of the main body cylinder portion 11 is cut out in a planar shape with respect to the protrusion 16.

  The rotation suppression unit 15 is a member that regulates the rotation angle of the cylinder lock 10 in a cylinder lock storage unit to be described later. A small protrusion 17 is formed on the end surface of the block-shaped protrusion 16 on the upper plate 14 side. This engages with a concave portion of a receiving portion on the side of the box body 1 described later.

  As shown in FIGS. 4 and 5, a cylinder lock storage portion 20 is formed in the handle 3 of the door 2. As shown in FIG. 5, the cylinder lock storage portion 20 has a substantially cylindrical shape, but a concave groove 21 through which the protrusion 16 of the cylinder lock 10 can be passed is formed on the lower side of the rotation lock portion 15. A concave groove is also formed. For this reason, the cylinder lock 10 can be inserted into the cylinder lock storage part 20 from the front side of the door 2.

  In addition, the rear end surface of the cylinder lock storage part 20 is notched in an overhang shape as shown in FIG. 5, and a retaining part 22 and a recessed part 23 are formed. Therefore, when the cylinder lock 10 is inserted into the cylinder lock storage portion 20 as shown in FIG. 5 and then rotated so that the protrusion 16 fits into the recess 23, the state shown in FIG. Moreover, even if it tries to rotate from the state of FIG. 6, since it is latched by the retaining part 22, it cannot be rotated.

  As shown in FIGS. 7 and 8, a receiving portion 30 for the protrusion 16 of the cylinder lock 10 is formed on the box body 1 side. The receiving part 30 is a part of the wall surface 31 of the box-like body cut out to have a U-shaped vertical cross section, and can be inserted from the front with the projection 16 of the cylinder lock 10 turned sideways. When the cylinder lock 10 is later rotated and the protrusion 16 is directed downward, the protrusion 16 is caught on the lower front wall surface 32 to form a locked state. That is, the box main body 1 and the door portion 2 can be formed in a locked state in a state where the cylinder lock 10 is engaged with the door portion 2. Since the cylinder lock 10 can be inserted and fixed from the surface of the door 2, it is not necessary to perform work from the back side of the door 2, and the work process can be reduced. A recess 33 is formed on the back side of the front wall surface 32 so that the locked state can be reliably maintained by engaging with the small protrusion 17 of the protrusion 16 described above.

The procedure for assembling the cylinder lock 10 to the electrical equipment storage box is as follows.
1) Open the door 2.
2) Insert the cylinder lock 10 into the cylinder lock storage part 20 from the front surface of the door 2. At this time, the key insertion portion 13 and the protrusion 16 of the cylinder lock 10 are directed to the locked position (downward) as shown in FIG.
3) When the cylinder lock 10 is rotated to the unlocked position (laterally) with the projection 16 exceeding the rear end surface of the cylinder lock storage portion 20, the projection 16 is moved into the retaining portion 22 and the recess 23 as shown in FIG. Engage and not come out of the door 2.
4) When the door 2 is closed, the cylinder lock 10 and the protrusion 16 are fitted into the receiving portion 30 of the box body 1 as shown in FIG. However, if the protrusion 16 is in the locked position, it does not enter the receiving portion 30.
5) After that, when the cylinder lock 10 is rotated to the locked position, the protrusion 16 is in the locked state where the mounting is completed as shown in FIG. 10, and the door 2 cannot be opened.

  As described above, it is possible to attach to the door 2 simply by rotating the cylinder lock 10 inserted from the front surface of the door 2. No need to install the For this reason, the number of parts and the number of assembly work steps can be reduced. In this embodiment, after the cylinder lock 10 is attached to the door 2, the cylinder lock 10 is rotated and locked in the reverse direction. However, the cylinder lock 10 may be rotated in the same direction. As described above, the attachment to the door 2 and the locking are performed in two stages, so that the cylinder lock 10 can be prevented from falling off.

  In addition, although the cylinder lock 10 of this invention can be used independently, as shown to FIG. 1, FIG. 11, the padlock 40 is attached to the lower part of the handle 3 of the door 2, and the receiving part 30 of the box main body 1. As shown in FIG. If the through-hole 41 for this is formed, it can also be used together with the padlock 40.

  Next, a second embodiment of the present invention will be described. In this embodiment, as shown in FIGS. 12 and 13, the cylinder lock 10 has a convex portion formed on the rotation suppressing portion 15 of the main body cylinder portion 11. The convex portion is provided with a relatively short first protrusion 51 and a relatively long second protrusion 52. These are formed with their positions slightly shifted in the circumferential direction. The hole shape of the cylinder lock storage portion 20 of the door 2 corresponds to the outer shape of the cylinder lock 10 as shown in FIG. 14, and the cylinder lock 10 is inserted with the protrusion 16 facing downward as shown in FIG. At this time, the relatively long second protrusion 52 enters the guide groove 34 formed on the side of the receiving portion 53 and functions as a guide.

  As a method of attaching the cylinder lock 10, as in the first embodiment, the protrusion 16 is inserted in a state where the protrusion 16 is directed to the locked position (downward) where the attachment and removal is possible as shown in FIG. If the insertion is continued, as shown in FIG. 16, the first protrusion 51 hits the receiving portion 53 serving as the protruding portion receiving portion of the cylinder lock storage portion 20, and further insertion becomes impossible. Therefore, as shown in FIGS. 17 and 18, when the cylinder lock 10 is rotated by 45 ° and is removed from the receiving portion 53, the first protrusion 51 can be inserted into the guide groove 34. However, even if it is further rotated, the projection 16 of the cylinder lock 10 hits the wall portion 54 of the cylinder lock storage portion 20 as shown in FIG. Although the cylinder lock 10 is rotated by 45 °, it may be rotated by 45 ° or less as long as the first protrusion 51 is rotated to an angle that avoids the receiving portion 53. When the cylinder lock 10 is further inserted from this state, the projection 16 of the cylinder lock 10 is detached from the wall portion 54 of the cylinder lock storage portion 20 and can be rotated as shown in FIG. 19, and the projection is the same as in the first embodiment. 16 can be engaged with the receiving portion 30 on the box body 1 side and locked to the attachment completion position. The cylinder lock 10 is not easily dropped by adopting a structure in which the cylinder lock 10 is locked in two stages.

  As a method of removing the cylinder lock 10 from the door 2, it is necessary to perform it in the reverse order of the mounting method described above. First, in a state where the door 2 is opened, the first protrusion 51 is pulled out to the surface side of the door 2 as shown in FIG. Next, in the state where the first protrusion 51 is pulled out to the surface side of the door 2, the first protrusion 51 is further rotated backward by 45 ° to form the first protrusion 51 on the surface side of the receiving part 53 as shown in FIG. 16. In the state of FIG. 14, since the protrusion 16 is positioned downward, it can be pulled out as shown in FIG. Here, when the cylinder lock 10 is rotated 90 ° at a time from the installation completion position of the cylinder lock 10 and the protrusion 16 is positioned downward so that it can be attached and detached, FIGS. 21 (a) and 21 (b). As shown in FIG. 2, the first protrusion 51 comes into contact with the back side of the receiving portion 53 so that it does not fall off. That is, the receiving portion 53 functions as a stopper for preventing the protrusion 16 from coming off.

  In the second embodiment, the insertion depth of the cylinder lock 10 is restricted by using the first protrusion 51 and the receiving portion 53, or the protrusion 16 of the cylinder lock 10 and the cylinder are prevented from coming off. The wall portion 54 of the lock storage unit 20 is used to regulate the rotation angle, and there is an advantage that the risk of dropping the cylinder lock 10 can be eliminated more than in the first embodiment. Other functions and effects are basically the same as those of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Box main body 2 Door 3 Handle 10 Cylinder lock 11 Main body cylinder part 12 Tumbler part 13 Key insertion part 14 Upper plate 15 Rotation suppression part 16 Protrusion that serves as a locking protrusion and a retaining protrusion 17 Small protrusion 20 Cylinder lock storage part 21 concave groove 22 retaining portion 23 concave portion 30 receiving portion 31 wall surface 32 front wall surface 33 concave portion 34 guide groove 40 padlock 41 through hole 51 first projecting portion 52 second projecting portion 53 receiving portion 54 wall portion

Claims (3)

An electrical equipment storage box lock structure using a cylinder lock attached to the door of the electrical equipment storage box body,
The cylinder lock includes a main body cylinder portion that houses a tumbler portion, a locking projection that engages with a receiving portion of the box body, and a locking projection for preventing falling off,
These locking projections and drop-out prevention projections for preventing falling off have a structure formed integrally with the main body cylinder portion,
The door is to have a cylinder lock housing section, upon rotation of the inserted the cylinder lock from the front of the door in the door open condition, fixed the retaining projection is engaged with the cylinder lock housing portion A structure for locking an electric equipment storage box using a cylinder lock.   The locking structure for an electric equipment storage box using a cylinder lock according to claim 1, wherein the locking protrusion and the retaining protrusion of the cylinder lock are the same protrusion. The cylinder according to claim 1 , wherein a convex portion is formed on the cylinder portion of the cylinder lock, and a protrusion receiving portion is formed on the cylinder lock storage portion as a retaining portion of the convex portion of the cylinder lock. Lock structure of electrical equipment storage box using a lock.

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