JP4986705B2 - Waterproof structure of cylinder lock - Google Patents

Description

  The present invention relates to a waterproof structure for a cylinder lock used in a locking device for a door of an electrical equipment storage box.

  The cylinder lock is used for the locking device for the door of the electrical equipment storage box. However, when the electrical equipment storage box is installed outdoors, the entire front face of the cylinder lock is exposed, so rain and wind are exposed to the front of the cylinder lock. There is a risk that water droplets that hit the entire surface and adhere to the front surface will permeate from the peripheral surface of the rotor, and the rotor and tumbler may rust and stop moving.

    Therefore, as a solution to this problem, as disclosed in Japanese Patent Application Laid-Open No. 2005-282009 (Patent Document 1), a rain cap winds with a cap that is attached by a key-shaped insertion bar that is inserted into the keyhole of the cylinder lock and covers the front surface of the cylinder lock with a lid. Is known to prevent hitting. However, this has to be removed after inserting the key when unlocked and must be fitted after the lock, and may be forgotten. In addition, when the fitting is incomplete and a gap is left between the lid and the front surface of the cylinder lock, there is a problem that rainwater that has entered the gap enters the rotor through the insertion bar.

Japanese Patent Laying-Open No. 2005-282009 (see FIGS. 1, 2 and paragraph 0011)

  The present invention solves the above-mentioned problems, and it is not necessary to remove the cap when inserting the key, and the waterproof structure of the cylinder lock used in the locking device for the door of the electrical equipment storage box where water does not easily enter the rotor or the like. It was completed for the purpose of providing.

The waterproof structure of the cylinder lock according to the present invention includes a key insertion hole corresponding to the key hole of the cylinder lock in the cap member that is engaged with the periphery of the flange extending around the front periphery of the cylinder lock and covers the front surface of the cylinder lock. It is basically formed and provided with a structure in which a cap member rotates together with a cylinder lock during key operation.

Then, the induction portion for inducing water is provided downward on the inner surface of the cap member facing the front of the cylinder lock when locking or during unlocking, further a through-hole for fitting the covered cylinder lock front by the cap member It is assumed that the front side of the through hole of the mounting cover having an enlarged hole portion is formed to hold the covered side portion covered by the cap member in front of the cylinder lock, and the rear portion is formed as a small diameter hole portion into which the rotor can be inserted. .

  In the present invention as described above, since the cap member is engaged with the peripheral edge of the flange extending around the front peripheral edge of the cylinder lock and covers the front surface of the cylinder lock, rain wind hits the entire front surface of the cylinder lock and hits the front surface. The adhering water droplets do not ooze out from the peripheral surface of the rotor, so that the rotor and tumbler do not rust and move. In addition, since the key insertion hole corresponding to the key hole of the cylinder lock is formed in the cap member, and the cap member rotates together with the cylinder lock when operating the key, it is necessary to remove the cap when inserting the key. There is nothing.

  In addition, in the case where a guide part that guides water downward when locking or unlocking is provided on the inner surface of the cap member facing the front surface of the cylinder lock, rainwater entering from the key insertion hole is guided downward by the guide part. Can be drained to the outside.

    Further, the front of the through hole of the mounting cover having a through hole for fitting the cylinder lock whose front surface is covered with a cap member is formed as an enlarged hole portion, and the covered side portion covered with the cap member in front of the cylinder lock is held. In this case, even if there is rainwater that enters from the outer peripheral surface of the cap member and the inner peripheral surface of the enlarged hole portion, the stepped wall at the base end of the enlarged hole portion prevents intrusion into the back. The cylinder cylinder part does not reach the tumbler.

Next, a preferred embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a box body of an electrical equipment storage box that houses electrical equipment such as a breaker, and 2 denotes a door that is pivotally attached to one side of a front opening 1 a of the box body 1 by a hinge 3 to open and close. A locking device 4 is attached near the other side of the door 2 facing the hinge 3 side.

    The locking device 4 is shown in FIG. 1, FIG. 3 and FIG. That is, a mounting cover 7 that also serves as an outer cylinder of the cylinder lock 6 is fitted into a bottomed cylindrical concave housing 5 formed in the vicinity of the other side of the door 2 from the surface side toward the inner side. A locking recess 73 is provided on the side surface to restrict the rotation of the cylinder lock 6 so that the protruding tumbler 61 is locked when the key is not inserted.

  Further, an attachment member 8 that can rotate integrally with the cylinder lock 6 is inserted behind the cylinder lock 6 inside the concave housing 5. The mounting member 8 has a groove 81 in which the O-ring 8 a is fitted in the peripheral portion, and is provided with a notch 82 for inserting the stopper plate 8 b in the peripheral portion of the front socket portion 80. A stopper plate 8b is inserted and connected to a slit 64 provided at the base end of the cylinder lock 6. Further, the rear end portion 83 of the attachment member 8 slightly protrudes from the through hole of the concave housing 5 toward the box body 1. A locking piece 85 is fixed to the rear end portion 81 of the attachment member 8 with a screw 84. For this reason, when the mounting member 8 is rotated together with the cylinder lock 6, the locking piece 85 is also rotated and engaged with or detached from the metal fitting 86 provided on the box body 1 side to lock and open the lock. The lock can be operated.

  The cylinder lock 6 embedded in the mounting cover 7 also serving as the outer cylinder of the cylinder lock 6 fitted inside the concave housing 5 has a well-known structure in which the tumbler 61 can move backward and the rotor 60 can rotate only when the key is inserted. belongs to. The front surface of the cylinder lock 6 is covered with a cap member 9 that is engaged with the peripheral edge of a circular flange 62 that is stretched around the front peripheral edge of the cylinder lock 6. Further, the cap member 9 is formed with a key insertion hole 9a corresponding to the key hole 63 of the cylinder lock 6 so that the cap member 9 rotates together with the cylinder lock 6 when the key is operated. In addition, it is preferable to provide the triangular recessed part 9c which shows the position of the locking piece 85 in the cap member 9 rotated with the cylinder lock 6. FIG.

    That is, as shown in FIGS. 5 to 7, the cap member 9 has a cylinder lock 6 on the inner surface of a frame portion 91 formed with a space 91a at which a circular flange 62 stretched around the front peripheral edge of the cylinder lock 6 can be interposed. A groove 91b that engages with the peripheral edge of the front surface is formed, and a notch 91c that fits a projection 62a provided on the circular flange 62 on the opposite side to the interval of the frame 91 is formed. Then, if the cap member 9 is slid from the interval 91a side and attached to the front peripheral edge of the cylinder lock 6, the front surface of the cylinder lock 6 is the peripheral edge of the circular flange 62 stretched around the front peripheral edge of the cylinder lock 6 as described above. The covered side portion 91d is formed so as to be covered with the cap member 9 engaged with.

  In this way, the cap member 9 is engaged with the peripheral edge of the flange extending around the front peripheral edge of the cylinder lock 6 so as to cover the front surface of the cylinder lock 6, so that the rain wind spreads over the entire front surface of the cylinder lock 6. Since the water droplets do not easily adhere to the water droplets, the water droplets do not permeate from the keyhole 63 and the peripheral surface of the rotor 60, and the rotor 60 and the tumbler 61 do not rust and become immobile. Further, since the key insertion hole 93 corresponding to the key hole 63 of the cylinder lock 6 is formed in the cap member 9 and the cap member 9 is rotated together with the cylinder lock 6 at the time of key operation, the key insertion is performed. Sometimes it is not necessary to remove the cap 9.

    In addition, a guide portion 93 that guides water downward when locking or unlocking is provided on the inner surface 92 of the cap member 9 facing the front surface of the cylinder lock 6, and rainwater that has entered from the key insertion hole 9 a is directed downward by the guide portion 93. It can be guided and drained to the outside. The guide portion 93 shown in FIG. 7 is formed in a tapered shallow concave portion extending downward, but may be a groove shape.

    Further, as shown in FIG. 8, the mounting cover 7 also serving as the outer cylinder of the cylinder lock 6 fitted inside the concave housing 5 is fitted with a through hole 71 for fitting the cylinder lock 6 whose front surface is covered with a cap member 9. A small-diameter hole 71b into which the front of the through-hole 71 is formed in an enlarged hole 71a and covered with a cap member 9 in front of the cylinder lock 6 and the rotor 60 can be inserted in the rear. A locking recess 73 that prevents the rotation of the rotor 60 by engaging the tumbler 61 that protrudes from the rotor 60 at the time of locking is provided in the cross direction on the inner periphery of the small-diameter hole 71b.

    Thereby, even if there is rainwater entering from the outer peripheral surface of the cap member 9 and the inner peripheral surface of the enlarged hole portion 71a, a step wall 71c formed between the base end of the enlarged hole portion 71a and the small diameter hole portion 71b. This prevents intrusion into the back and does not reach the tumbler 61 of the cylinder tube portion.

It is a secondary sectional view showing an embodiment of the present invention. It is a cross-sectional view of a state where the door is closed. It is an expanded sectional view of the principal part. It is a disassembled perspective view of the principal part. It is a perspective view of the cylinder lock covered with the cap. It is the perspective view which looked at the cap from the front side. It is the perspective view which looked at the cap from the back side. It is a perspective view of an attachment cover.

Explanation of symbols

6 Cylinder lock
62 Round collar
63 Keyhole 9 Cap member

Claims (1)

A key insertion hole corresponding to the keyhole of the cylinder lock is formed in the cap member that covers the front surface of the cylinder lock by engaging with the peripheral edge of the collar extending from the front periphery of the cylinder lock. A waterproof structure for a cylinder lock having a structure in which a cap member rotates, and a guide portion for guiding water downward when locking or unlocking is provided on the inner surface of the cap member facing the front surface of the cylinder lock, and The front side of the through hole of the mounting cover having a through hole for fitting the cylinder lock whose front surface is covered with the cap member is formed as an enlarged hole portion, and the covered side portion covered with the cap member in front of the cylinder lock is held. A waterproof structure for a cylinder lock, characterized in that the rear is formed with a small-diameter hole into which the rotor can be inserted .

Images