WO2017103989A1

WO2017103989A1 - Padlock

Info

Publication number: WO2017103989A1
Application number: PCT/JP2015/085041
Authority: WO
Inventors: 東　重企
Original assignee: 株式会社アッサアブロイジャパン
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2017-06-22
Also published as: JPWO2017103989A1; PH12018501192B1; AU2015417647A1; JP6599476B2; PH12018501192A1; AU2015417647B2; DE112015007187T5

Abstract

According to the present invention, a slide pin (50) and an elastic member (56) which urges the slide pin (50) upward are incorporated in a lower end portion of a leg-part insertion hole (7) into which a short leg part (10) of a U-shaped latch (9) is inserted, and one end portion of a cylinder cap (52) is fixed at a lower end portion, of the slide pin (50), which is positioned outside the leg-part insertion hole (7). A keyhole (19) of a lock cylinder (16) incorporated in a lock hole (6) is exposed to the outside by the cylinder cap (52) being pulled down and by rotation around the slide pin (50), and the lock cylinder (16) is locked by an operation of an operation key (20) which is inserted into the keyhole (19). Thereafter, the cylinder cap (52) is brought into close contact with the lower end surface of a lock body (1) by the elastic force of the elastic member (56) so as to cover the keyhole (19), so that foreign matter is prevented from entering the inside through the keyhole (19).

Description

padlock

This invention relates to a padlock that locks a U-shaped latch projecting from the upper surface of a square lock body by hooking it onto a locking object.

As described in the following Patent Document 1, the padlock is slidably inserted into a pair of leg insertion holes formed in the lock body, and a pair of legs having different lengths provided on the U-shaped latch, A lock cylinder is installed in a lock hole formed between the pair of leg insertion holes, an operation key is inserted into a key hole formed in the lock cylinder, and the lock cylinder is operated. It is activated to lock the latch in the locked position.

In the padlock as described above, pin tumbler locks are often used as the lock cylinders. However, since there is a high possibility of unlocking by mischief, in recent years, lock cylinders with electronic components built in have come to be used frequently. It is coming. Both lock cylinders are built in such that a key hole into which an operation key is inserted opens at the lower surface of the lock body.

JP-T-2001-526337

By the way, in the padlock, as described above, since the key hole is opened on the lower surface of the lock body, when the padlock is used outdoors, rainwater or dust enters the inside from the key hole and the lock cylinder is There is a possibility of failure.

An object of the present invention is to provide a padlock that can surely prevent foreign matter such as water and dust from entering through the key hole of the lock cylinder.

In order to solve the above problems, in the present invention, there is provided a lock main body having a lock hole extending from the top surface to the bottom surface at the center between both side surfaces, and a pair of leg insertion holes formed on both sides of the lock hole. And a pair of legs having different lengths, each leg having a U-shaped latch that is slidably inserted into each of the leg insertion holes, and a key hole. The lock cylinder is incorporated in the lock hole so as to be exposed on the bottom surface of the main body, and is operated by an operation key inserted into the key hole, and the lock cylinder is incorporated in an upper position of the lock cylinder so as to lock the latch. In a padlock comprising a lock mechanism operated by the lock cylinder, a slide pin is inserted into the leg insertion hole into which the short leg portion of the latch is inserted, and the slide pin faces upward. An urging elastic member A cylinder cap is attached to the lower end exposed to the outside from the lower end opening of the leg insertion hole of the slide pin so as to adhere to the lower surface of the lock body by the elastic force of the elastic member and cover the bottom opening of the lock hole Adopted.

In the padlock having the above configuration, when the operation key is inserted into the key hole and rotated, the lock mechanism is activated and the latch is unlocked. By pulling the latch to the outside by the unlocking, the short leg portion is pulled out from the leg insertion hole, and the latch can be detached from the locking object.

Also, when the latch is hung on the object to be locked, the short leg portion of the latch is aligned with the leg insertion hole, and then the latch is pushed, the short leg portion is inserted into the leg insertion hole. After the insertion, when the operation key is returned and rotated, the lock mechanism is activated and the latch is locked, and the lock object can be locked by pulling out the operation key.

In the padlock having the above-described configuration, the cylinder cap is opened, the key hole of the lock cylinder is exposed to the outside on the surface of the lock body, and the operation key is inserted into the key hole for unlocking and locking operations. . Here, when opening the cylinder cap, the cylinder cap is pulled down against the elasticity of the elastic member, the cylinder cap is rotated around the slide pin in a state where the cylinder cap is separated from the lower surface of the lock body, The rocking side end is withdrawn in the circumferential direction from a position facing the lock hole to expose the key hole of the lock cylinder to the outside.

After locking, the cylinder cap is rotated to a position where the swing side end faces the lock hole, and the cylinder cap is brought into close contact with the lower surface of the lock body by the restoring elasticity of the elastic member. The key hole is covered with the end on the side to prevent foreign matters such as water and dust from entering the key hole.

Here, it is preferable to provide a rubber cap seal in close contact with the lower surface of the lock body with a contact circle larger than the opening diameter of the bottom surface of the lock hole on the cylinder cap. By providing the cap seal, good sealing performance can be obtained at the position of the cap seal, so that the entry of foreign matter into the key hole can be effectively prevented.

The locking mechanism consists of a tail piece that is rotated by a lock cylinder, a cylindrical locking piece that rotates in conjunction with the tail piece, and a ball that is housed in a pocket that connects the lock hole and the leg insertion hole. The ball is detachable with respect to the notch formed in the short leg portion of the latch, and the locking piece is directed to the direction in which the ball is disengaged while the ball is fitted in the notch. It is possible to employ a configuration in which a small-diameter cylindrical holding surface that prevents movement and an axial groove that allows movement in the direction of disengagement are provided.

In adopting the lock mechanism as described above, a small-diameter cylindrical surface is provided on the tail piece, and an O-ring is fitted to the small-diameter cylindrical surface to seal between the small-diameter cylindrical surface and the inner diameter surface of the lock hole. Good.

As described above, even if foreign matter enters the inside from the upper opening of the lock hole by sealing between the small-diameter cylindrical surface of the tail piece and the inner diameter surface of the lock hole, the foreign matter enters the lock cylinder by the O-ring. It is prevented from moving to the side, and foreign matter can be prevented from entering from the upper side of the lock cylinder.

Also, it is preferable to provide a water passage hole in the lower end of the lock body for communicating the lower part of the leg insertion hole to the outside. By providing a water passage hole, water such as rainwater that enters the leg insertion hole can be naturally discharged from the water hole to the outside, and rust is generated at the contact between the leg insertion hole and the latch leg. Therefore, it is possible to maintain good operability for a long time without hindering the operation of inserting and removing the latch.

In the present invention, as described above, the cylinder cap is brought into close contact with the lower surface of the lock body by the elastic force of the elastic member so as to cover the lower end opening of the lock hole in which the lock cylinder is incorporated. When used outdoors, it is possible to reliably prevent foreign substances such as water and dust from entering the key hole of the lock cylinder.

Also, when the cylinder cap is pulled down and rotated around the slide pin, the rocking side end of the cylinder cap is retracted from the position facing the lower end opening of the lock hole, the key hole is opened, and the open state is established. The cylinder cap is lifted by the elastic force of the elastic member and brought into close contact with the lower surface of the lock body when the cylinder cap is returned to the position where the swing side end is opposed to the lower end opening of the lock hole and released. Since the key hole is closed, the key hole can be opened and closed very easily.

The perspective view of the padlock concerning this invention 1 is a longitudinal sectional view of FIG. Sectional view showing cylinder cap open Plan view of FIG. Bottom view of FIG. Sectional drawing which shows the unlocking state of a locking mechanism 2 is an exploded perspective view of the padlock shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the padlock according to the present invention has a lock body 1 and a latch 9.

As shown in FIGS. 1 to 5, the lock body 1 has a square shape, and a square plate fitting recess 2 is provided on the upper surface thereof. On the other hand, the lower surface of the lock body 1 is provided with a circular protrusion 3 at the center and a bulge 4 at one end, and the inner surface 5 of the bulge 4 facing the protrusion 3 is a protrusion. 3 is a circular arc surface centered on 3.

The lock body 1 is provided with a lock hole 6 extending from the bottom surface of the plate fitting recess 2 to the lower surface of the protruding portion 3, and a pair of

leg insertion holes

7 and 8 on both sides of the lock hole 6. A pair of

legs

10 and 11 having different lengths formed at both ends of the U-shaped latch 9 are slidably inserted into the

insertion holes

7 and 8, respectively.

Of the pair of leg

portion insertion holes

7 and 8, the leg portion insertion hole 7 into which the short leg portion 10 (hereinafter referred to as “short leg portion 10”) is inserted gradually decreases in inner diameter toward the lower end. The first step portion 12 and the second step portion 13 are provided on the inner periphery as a stepped hole, and the lower end portion of the medium-diameter hole portion 7a between the first step portion 12 and the second step portion 13 is a lock body. 1 communicates with the outside through a water passage hole 14 opened at a lower portion of the side surface.

On the other hand, the lower end portion of the leg portion insertion hole 8 into which the longer leg portion 11 (hereinafter referred to as “long leg portion 11”) is inserted is through a water passage hole 15 opened at the lower surface of the bulging portion 4. Communicate with the outside.

A lock cylinder 16 is incorporated in the lock hole 6. The lock cylinder 16 has an outer cylinder 17 and an inner cylinder 18 incorporated in the outer cylinder 17. A key hole 19 is formed in the inner cylinder 18, and an operation key 20 is inserted into the key hole 19 to insert an inner key 18. The cylinder 18 is composed of a pin tumbler lock that is rotatable relative to the outer cylinder 17. However, since the pin tumbler lock is a well-known one described in the prior art documents, the details are as follows. Is not shown. The lock cylinder 16 is not limited to a pin tumbler lock, and may be any one that has a key hole and can be locked and unlocked by turning an operation key inserted into the key hole.

The lock cylinder 16 is incorporated into the lock hole 6 with the key hole 19 facing downward, the outer cylinder 17 is prevented from rotating with respect to the lock body 1, and the inward flange 3 a provided at the lower end of the lock hole 6. It has been secured by.

Further, in the lock hole 6, a lock mechanism 21 that is actuated by the lock cylinder 16 to lock the latch 9 is incorporated at an upper position of the lock cylinder 16.

As shown in FIGS. 2 and 7, the lock mechanism 21 includes a tail piece 22 rotated by the lock cylinder 16, a circular stopper plate 23 provided on the upper side of the tail piece 22, and the stopper plate 23. And a ball 25 incorporated between the locking piece 24 and the pair of

leg portions

7 and 8 of the latch 9.

The tail piece 22 is fitted to the upper end portion of the inner cylinder 18 in the lock cylinder 16 and is prevented from rotating, and rotates integrally with the inner cylinder 18. A key 26 having a square cross section extending in the radial direction is provided on the upper surface of the tailpiece 22, and the key 26 is rotatable in a hole 27 formed in the stopper plate 23. A small-diameter cylindrical surface 28 is formed on the outer periphery of the tailpiece 22, and an O-ring 29 is fitted to the small-diameter cylindrical surface 28. The O-ring 29 is in elastic contact with the small diameter cylindrical surface 28 and the inner diameter surface of the lock hole 6 to seal between the small diameter cylindrical surface 28 and the inner diameter surface of the lock hole 6.

The stopper plate 23 is prevented from rotating by the fitting of a pair of protruding pieces 30 formed at the outer periphery facing position and the vertical groove 31 formed at the inner periphery facing position of the lock hole 6. In addition, a pair of protrusions 32 are formed at positions facing the inner periphery of the hole 27 in the stopper plate 23, and the rotation angle of the tailpiece 22 and the inner cylinder 18 is regulated by the contact of the key 26 with the protrusion 32. In the embodiment, the rotation angle of the tailpiece 22 and the inner cylinder 18 is 90 °.

The key piece 33 extending in the radial direction is formed in the lower end surface of the locking piece 24, and the locking piece 24 rotates integrally with the tail piece 22 by fitting the key 26 into the key hole 33.

Further, the locking piece 24 is provided with a cylindrical holding surface 34 at the upper outer periphery and a pair of axial grooves 35 at positions facing the outer periphery. In a state where the cylindrical holding surface 34 faces the ball 25 disposed at the engagement position, the cylindrical holding surface 34 prevents the ball 25 from moving inward and holds the ball 25 at the engagement position. Here, the engagement position of the ball 25 refers to a position where the ball 25 fits into the notch 38 formed in the pair of

legs

10 and 11 of the latch 9 as will be described later.

The axial groove 35 is deep enough to accommodate a part of the outer periphery of the ball 25, and allows movement in a direction in which the ball 25 at the engagement position disengages.

As shown in FIG. 2, the ball 25 is accommodated in each of a pair of

pockets

36 and 37 formed so as to communicate with the lock hole 6 and the pair of leg

portion insertion holes

7 and 8. The pair of

leg portions

10 and 11 can be engaged and disengaged with respect to a notch 38 formed at a position facing the inner periphery.

Here, the long leg part 11 is formed with a stealing part 11a extending in the axial direction below the notch part 38, and the step part 11b formed at the lower end part of the stealing part 11a is engaged with the ball 25 to be long. The leg 11 is prevented from being removed. In the state in which the long leg portion 11 is not pulled out, the short leg portion 10 is in a state of coming out of the leg portion insertion hole 7.

A retaining plate 39 for preventing the locking piece 24 from coming out of the upper opening of the locking hole 6 is fitted to the upper portion of the locking hole 6, and the retaining plate 39 is a retaining ring attached to the upper portion of the locking hole 6. 40 is secured.

Protection plates

41 and 42 made of a pair of thin metal plates are fitted in the plate fitting recess 2 formed on the upper surface of the lock body 1. As shown in FIGS. 2 and 7, a cylindrical portion 44 fitted into the leg insertion hole 7 from a hole 43 formed in one end portion of the lower holding plate 42 is provided at one end portion of the upper protection plate 41. Is provided. A ball hole 45 is formed in the cylindrical portion 44 at a position facing the pocket 36, and the ball 25 is incorporated in the ball hole 45.

Further, holes 46 into which the long legs 11 of the latch 9 are inserted are provided at the other ends of the upper protection plate 41 and the lower protection plate 42.

As shown in FIG. 2, among the pair of leg insertion holes 7 and 8 formed in the lock body 1, a slide pin 50 is inserted into the leg insertion hole 7 into which the short leg 10 is inserted. . The slide pin 50 has an upper end facing the first step portion 12 in the vertical direction, and a head 51 that prevents the slide pin 50 from coming out of the lower end of the leg insertion hole 7 by contact with the first step portion 12. Is provided. In forming the head 51, here, a screw with a head is screwed into the end face of the slide pin 50.

One end of the cylinder cap 52 is fixed to the lower end protruding downward from the lower end opening of the leg insertion hole 7 of the slide pin 50. The cylinder cap 52 is rotatable about the slide pin 50. Further, the cylinder cap 52 has the same shape and the same size as the lower surface of the lock body 1 except for the bulging portion 4, and the end outer surface 53 on the swing side is along the inner surface 5 of the bulging portion 4. It is an arc-shaped convex curved surface.

A concave portion 54 is formed on the upper surface of the swing side end portion of the cylinder cap 52 at a position facing the circular protrusion 3 formed on the lower surface of the lock body 1, and the concave portion 54 is made of an elastic body such as rubber. A cap seal 55 is fitted and fixed through an adhesive means or the like.

The cap seal 55 has a cylindrical peripheral wall 55a, and the peripheral wall 55a is sized to accommodate the circular protrusion 3 of the lock body 1. Further, the peripheral wall 55 a has an axial length at which the opening end slightly protrudes above the upper surface of the cylinder cap 52.

The cylinder cap 52 is urged upward by an elastic member 56 made of a coil spring incorporated between the head portion 51 of the slide pin 50 and the second step portion 23 of the leg insertion hole 7, and the peripheral wall 55 a of the cap seal 55. The opening end surface of the lock cylinder 1 is in close contact with the lower surface of the lock body 1, and the key hole 19 of the lock cylinder 16 is sealed to prevent entry of foreign matter such as water and dust.

The padlock shown in the embodiment has the above structure. FIG. 2 shows that the ball 25 is engaged with the notch 38 formed in the

legs

10 and 11 of the latch 9, and the ball 25 is a cylindrical shape of the locking piece 24. A state in which the latch 9 is locked by being held at the engagement position by the holding surface 34 is shown.

Further, the cylinder cap 52 is held in a closed position overlapping the lower surface of the lock body 1, and the key hole 19 of the lock cylinder 16 is closed by the cylinder cap 52.

When locking an object to be locked provided outdoors, the cylinder cap 52 is opened, and the operation key 20 is inserted into the key hole 19 of the lock cylinder 16 exposed on the lower surface of the protrusion 3 of the lock body 1, The latch 9 is unlocked by the turning operation 20, the short leg portion 10 is pulled out by the pulling operation of the latch 9, and the object to be locked is locked by the latch 9.

Here, when opening the cylinder cap 52, the cylinder cap 52 is pulled down against the elasticity of the elastic member 56, and the cylinder cap 52 is separated from the lower surface of the lock body 1 as indicated by a chain line P ₁ in FIG. 2. 3, the cylinder cap 52 is rotated around the slide pin 50, and the swinging side end of the cylinder cap 52 is rotated 180 ° in the circumferential direction, as shown by a chain line P ₂ in FIG. The cylinder cap 52 is released from the position facing the protrusion 3 in the circumferential direction and released after the rotation.

As described above, the key hole 19 of the lock cylinder 16 is exposed to the outside as shown in FIG. 5 by rotating the cylinder cap 52 by 180 ° and retracting the swing side end portion from the projecting portion 3. Further, when the holding is released after the rotation of the cylinder cap 52, the cylinder cap 52 is pulled up by the elasticity of the elastic member 56, and the end on the swing center side comes into contact with the protrusion 3 as shown in FIG. Stopped.

As shown in FIG. 3, when the operation key 20 is inserted into the key hole 19 and rotated while the key hole 19 is opened, the inner cylinder 18 rotates, and the rotation is performed from the tail piece 22 to the locking piece 24. , The locking piece 24 rotates. When the locking piece 24 is rotated by 90 °, the axial groove 35 formed in the locking piece 24 faces the ball 25 and unlocks the ball 25.

Therefore, when the latch 9 is pulled, as shown in FIG. 6, the ball 25 comes out from the notch 38 and fits into the axial groove 35 of the locking piece 24, and the short leg 10 comes out from the leg insertion hole 7, The latch 9 can be detached from the locked object.

Further, the latch 9 is hung on the object to be locked, the short leg 10 of the latch 9 is aligned with the leg insertion hole 7, and then the short leg 10 is inserted into the leg insertion hole 7 by pushing the latch 9. The After the insertion, when the operation key 20 is returned and rotated, the locking piece 24 is rotated, and the ball 25 is pushed outward at the edge of the opening of the axial groove 35 so that the notches 38 of the

legs

10 and 11 are cut. Engage with. After the engagement, the cylindrical holding surface 34 faces the ball 25, the ball 25 is held in the engagement position, the latch 9 is locked, and the object to be locked is locked.

Further, after the locking, lowered to hold the cylinder cap 52 shown in FIG. 6, after pulling down the cylinder cap 52 to the position shown by a chain line P ₂ in FIG. 3, chain line P in FIG. 2 around the slide pin 50 ₁ , the cylinder cap 52 is moved toward the lower surface of the lock body 1 by the restoring elasticity of the elastic member 56, and the peripheral wall 55 a of the cap seal 55 is brought into close contact with the lower surface of the lock body 1. By the close contact, the key hole 19 is covered with the cap seal 55, and foreign matter such as water and dust is prevented from entering the key hole 19.

In the padlock shown in the embodiment, as described above, when the cylinder cap 52 is pulled down and rotated around the slide pin 50, the swing side end of the cylinder cap 52 faces the lower end opening of the lock hole 6. When the key cap 19 is exposed by being retracted from the position and the cylinder cap 52 that has been opened is returned to a position where the swinging side end portion faces the lower end opening of the lock hole 6 to release the lowering, the elastic member 56 is released. By pulling up due to the elastic force, the peripheral wall 55a of the cap seal 55 is brought into close contact with the lower surface of the lock body 1 and the key hole is concealed, so that the key hole 19 can be opened and closed very easily.

Further, since the peripheral wall 55a of the cap seal 55 is brought into close contact with the lower surface of the lock body 1 by the elastic force of the elastic member 56, good sealing performance can be obtained.

DESCRIPTION OF SYMBOLS 1 Lock body 6

Lock hole

7, 8 Leg insertion hole 9 Latch 10 Short leg part 11

Long leg part

14, 15 Water hole 16 Lock cylinder 19 Key hole 20 Operation key 21 Lock mechanism 22 Tail piece 24 Locking piece 25 Ball 34 Holding surface 35

Axial groove

36, 37 Pocket 50 Slide pin 52 Cylinder cap 55 Cap seal 56 Elastic member

Claims

A lock body that has a lock hole from the top surface to the bottom surface at the center between both side surfaces and a pair of leg insertion holes formed on both sides of the lock hole, and a pair of leg portions with different lengths Each leg has a U-shaped latch that is slidably inserted into each leg insertion hole, and a key hole, and the key hole is exposed on the bottom surface of the lock body. And a lock cylinder that is operated by an operation key inserted into the key hole, and a lock mechanism that is incorporated in an upper position of the lock cylinder and is operated by the lock cylinder to lock the latch. In
Of the pair of leg insertion holes, a slide pin and an elastic member for urging the slide pin upward are incorporated into the leg insertion hole into which the short leg portion of the latch is inserted, and the leg of the slide pin A padlock having a cylinder cap attached to a lower end exposed to the outside from a lower end opening of the part insertion hole and attached to a lower surface of the lock body by an elastic force of the elastic member so as to cover a bottom opening of the lock hole.
The padlock according to claim 1, wherein the cylinder cap has a rubber cap seal that is in close contact with the lower surface of the lock body with a contact circle larger than the bottom opening diameter of the lock hole.
The lock mechanism is housed in a tail piece rotated by the lock cylinder, a cylindrical locking piece that rotates in conjunction with the tail piece, and a pocket that communicates the lock hole and the leg insertion hole. A direction in which the ball is disengaged with respect to the notch formed in the short leg portion and the ball is disengaged in a state where the ball is fitted to the notch portion. The padlock according to claim 1 or 2, wherein a small-diameter cylindrical holding surface that prevents movement toward the direction and an axial groove that allows movement toward the direction of disengagement are provided.
The padlock according to claim 3, wherein a small-diameter cylindrical surface is provided on an upper portion of the tail piece, and an O-ring is fitted to the small-diameter cylindrical surface to seal between the small-diameter cylindrical surface and the inner diameter surface of the lock hole.
The padlock according to any one of claims 1 to 4, wherein a water passage hole is provided at a lower end portion of the lock body so as to communicate a lower portion of the leg portion insertion hole to the outside.