JP3348072B2 - Lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device, and more particularly to a plug-shaped locking device which is convenient to use and cannot be easily opened with a key other than a predetermined key.

[0002]

2. Description of the Related Art A lock that has been widely used in the past has a main body 1 and a U-shaped shackle 2 like a padlock shown in FIG. The upper end surface of the main body 1 is provided with two insertion holes 4 into which both ends of the shackle 2 can be inserted and locked.
Of the receiving seat 5 attached to both ends of a lock target (eg, a door, a box, etc.) which can be normally opened and closed.
1, and further inserted and locked in the insertion hole 4 of the main body 1, the shackle 2 restricts the two receiving seats 5 from opening, and cannot be opened unless unlocked with a predetermined key. Thus, the lock target is locked.

[0003]

The conventional lock must be able to lock the object to be locked, but there are still points to be improved in terms of use and prevention of theft. That is, when the conventional lock is locked by passing the shackle 2 through the receiving seat 5, after passing one end of the shackle 2 through the retaining rings 501 of both the receiving seats 5, the main body 1 is moved to make sure that the insertion hole 4 is correctly inserted into the shackle 2. The shackle 2 can be pushed into the insertion hole 4 to be locked and locked after the end is made to correspond to the end, and when unlocking, the correct key is inserted into the lock plug 3 and turned. After the end of the shackle 2 is pulled out of the insertion hole 4, the main body 1 is moved and the shackle 2 is pulled out from both receiving seats 5 and unlocked, and both locking and unlocking are troublesome and troublesome. Further, since the conventional lock uses the shackle 2 for locking, the portion of the shackle 2 is exposed to the outside of the receiving seat 5 at the time of locking, so that the exposed portion of the shackle 2 is easily cut with a saw to lock the lock. Can be broken. The present invention has been made in view of the problems of the conventional lock, and passes the bolt portion of the lock bolt through a retaining ring to be locked, locks the lock head by locking the lock head to the lock cylinder, and locks the lock target with the lock bolt and the cylinder. An object of the present invention is to provide a lock device that is pinched and has excellent anti-theft properties and is convenient to use.

[0004]

In order to achieve the above object, a lock device according to the present invention is provided with a lock plug chamber in which a lock plug is fitted at a front end inside a cylindrical body having a predetermined outer diameter, and a keyhole at an outer end of the lock plug. And a lock cylinder with a rotating cavity formed in the rear of the lock plug chamber, and fixedly locked to the rear end of the lock plug, interlockingly rotated,
An insertion hole is formed in the rear end surface of the rotating part provided at the rear end, an annular groove is provided around the inner bottom peripheral surface of the insertion hole, and an equal interval along the axis is formed in the inner peripheral wall of the insertion hole at the opening portion. A lock ring in which three longitudinal grooves recessed in the lock ring communicate with the annular groove, and a lock ring is fixed in a rotation cavity of the lock cylinder, and a rotation portion of the lock ring can be housed in a seat hole provided therein, and a seat hole is provided. A holding cylinder in which a fixing hole communicating with the insertion hole of the rotating part is formed near the outer end of the rotation hole, and three notch grooves are recessed at equal intervals on the inner peripheral wall of the fixing hole, a bolt part and a shank part, The part has a predetermined length, the rod diameter is smaller than the lock cylinder and the shank part, it can pass through the lock target, and a lock head that can be inserted into the lock cylinder at the tip of the bolt part is formed around the front end of the lock head. Three locking teeth protruding at equal intervals can enter the annular groove of the lock ring from three longitudinal grooves. The locking teeth can be locked and fixed in the insertion hole from the rotation of the lock ring by a predetermined angle, and the three stopping teeth projecting at equal intervals around the rear end of the lock head are in the three notched grooves of the holding cylinder. It is provided with a lock bolt that locks and thereby locks the lock cylinder.

A protruding ridge along the axis is protruded on the inner wall surface of the rotating cavity of the lock cylinder, a fixing groove is formed on the outer peripheral surface of the holding cylinder, and the protruding ridge is fitted to the protruding ridge. The joining edge is welded and sealed, or a dust-proof sleeve is externally fitted to the outer peripheral portion corresponding to the lock plug of the lock cylinder, and a fitting port for fitting around the lock cylinder is formed inside the dust-proof sleeve, and the dust-proof is provided. Open a hole at the position corresponding to the keyhole of the lock plug on the end face of the cover,
A groove is provided near the peripheral edge of the dust-proof sleeve end, and a dust-proof cover is mounted in the groove so as to be able to advance and move freely, and the opening and closing of the hole can be controlled. Corresponding projections are provided on the peripheral surface, the projections are engaged with the ring groove, the knob is projected on the outer surface of the dustproof cover, the bolt part of the lock bolt and the shank part It is more preferable to form the bolt integrally and the bolt portion and the shank portion separately, provide lock heads at both ends of the bolt portion, and combine each lock head with the shank portion and the lock cylinder.

In the present invention constructed as described above, the bolt portion of the lock bolt is passed through the retaining ring to be locked, the shank portion is brought into contact with the side to be locked, and then the lock cylinder and the lock head are connected. When inserted and engaged, in the unlocked state, the angular positions of the three vertical grooves of the rotating part and the three notch grooves of the holding cylinder are on the same straight line, and the three locking teeth of the lock head are in the notch groove and the vertical groove. Along with the annular groove at the bottom of the insertion hole, and the three stopping teeth of the lock head engage in the three notched grooves of the holding cylinder. Then, when the lock plug is rotated to the locking position by the key, the lock plug rotates the lock ring at a predetermined angle in conjunction with the lock ring, and the rotating portion and the insertion hole also rotate accordingly, and the three vertical grooves and The locking teeth move to the mutually shifted angular positions, and the locking teeth lock on the inner wall surface of the insertion hole and cannot be pulled out.
Lock cylinder and lock bolt can be locked.
In addition, since the locking teeth of the lock head are locked in the notched grooves of the holding cylinder, the lock bolt is engaged with the lock cylinder and cannot be rotated, so that the lock bolt and the lock cylinder are relatively rotated and disengaged. Can be prevented.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on embodiments, but the present invention is not limited to these examples. As shown in FIGS. 1 to 3, the lock device of the present invention includes a lock cylinder 10, a lock ring 20,
It has a holding cylinder 30, a lock bolt 40 and a dustproof sleeve 50.

The lock cylinder 10 has a cylindrical shape with a predetermined outer diameter, and has a lock plug chamber 11 in which a lock plug 12 is provided at the front end thereof. A keyhole 122 is formed at the outer end of the lock plug 12 by attaching a plurality of elastically urged lock tips 121 to the inside of the lock plug 12. Then, a key (not shown) is inserted into the keyhole 122 and each lock chip 121 is inserted.
Can be operated to unlock and unlock. Since the technology for locking and unlocking the lock plug 12 is known, its description is omitted. A rotating cavity 13 is recessed behind the lock plug chamber 11,
An axially extending ridge 14 is provided on the inner wall of the rotary cavity 13, a fitting seat 15 is provided on the outer peripheral wall of the lock cylinder 10, and a ring groove 16 is provided on the outer peripheral surface of the fitting seat 15. ing.

The lock ring 20 is fixed to the rear end of the lock plug 12 with a pin, as shown in FIG.
It can rotate in conjunction with the lock plug 12. A rotating portion 21 is provided at the rear end of the lock ring 20, and an insertion hole 22 is formed in the rear end surface of the rotating portion 21. An annular groove 23 is provided on the inner peripheral surface at the bottom of the insertion hole 22, and three vertical grooves 24 are formed along the axis at equal intervals on the inner peripheral wall of the opening portion of the insertion hole 22. The three vertical grooves 24 communicate with the inside of the annular groove 23.

The holding cylinder 30 is a disc-shaped seat body, and has a vertically fixed groove 31 formed in the outer peripheral surface thereof, so that when the holding cylinder 30 is fitted into the rotating cavity 13 of the lock cylinder 10, Then, the ridge 14 is engaged with the fixing groove 31, and the holding cylinder 30 and the lock cylinder 10 can be integrally linked. Furthermore, the contact gap between the two can be firmly connected by the welding method, and the lock plug 12 and the lock ring 20 can be closed in the lock cylinder 10. A seat hole 32 is provided inside the holding cylinder 30, and the rotating part 2 of the lock ring 20 is provided in the seat hole 32.
1, and a fixing hole 33 near the outer end from the seat hole 32.
Is formed, and the cutout grooves 34 are formed at regular intervals on the inner peripheral wall of the fixing hole 33 at the same interval.

The lock bolt 40 has a bolt portion 41 and a shank portion 42. In this embodiment, the bolt 41 and the shank 42 are integrally connected and molded.
The bolt portion 41 has a predetermined standard length, and a trader can build up an appropriate size corresponding to the thickness of the lock target 100, and the rod diameter thereof is the lock cylinder 10 and the shank portion 42.
A lock head 43 having a relatively small outer diameter is formed at the end of the bolt portion 41, and can be passed through the both retaining rings 101 of the lock target 100. The lock head 43 is provided with the fixing hole 33 and the insertion hole 2 inside the lock cylinder 10.
2 and three locking teeth 44 projecting at equal intervals around the rod at the front end of the lock head 43 are inserted into the three vertical grooves 24.
When the lock ring 20 is turned into the annular groove 23 of the lock ring 20 by a predetermined angle, the inner wall of the insertion hole 22 can lock and lock the locking teeth 44. As a result, the lock bolt 40 can be locked to the lock cylinder 10, and the three stopping teeth 45 projecting at equal intervals around the rod at the rear end of the lock head 43 are used to lock the lock bolt 40 to the lock cylinder 10. Then, the lock bolt 40 and the lock cylinder are locked by being locked in the three cutout grooves 34 of the holding cylinder 30.

The dustproof sleeve 50 has a cylindrical lid and is fitted around the outer peripheral edge of the lock cylinder 10 corresponding to the lock plug 12. Fitting hole 5 inside dustproof sleeve 50
1 is recessed and fitted around the fitting seat 15 of the lock cylinder 10. In addition, a double protrusion 5 is formed on the inner peripheral surface of the dustproof sleeve 50.
2, the hole 53 is opened at a position corresponding to the keyhole 122 of the lock plug 12 on the end face of the dustproof cover 50, and the groove port 54 is provided near the peripheral edge of the end face of the dustproof sleeve 50. The dustproof cover 55 can be movably advanced into the groove 54, and the knob 5 is provided on the outer surface of the dustproof cover 55.
51 is formed, and by moving the knob 551 by hand, the hole 5 is formed.
The opening and closing of the lock 3 is controlled to achieve a dust-proof protection effect when the lock cylinder 10 is not used.

Having described the related structure and mounting position of each assembly member in the lock device of the present invention, the operation of each member and the effects that can be achieved will be described below. When the lock device of the present invention is used, first, as shown in FIGS. 4 and 5, the bolt portion 41 of the lock bolt 40 is passed through the retaining ring 101 of the lock target 100, and the shank portion 42 of the lock bolt 40 is locked. 100, and then the lock cylinder 43 and the lock head 43 of the lock bolt 40.
Insert and join. In the unlocked state of the lock device, the angular positions of the three vertical grooves 24 of the rotating part 21 and the three notched grooves 34 of the holding cylinder 30 are on the same straight line, so that the three locking teeth 44 of the lock head 43 are Notch groove 34 and longitudinal groove 2
4 can be inserted into the annular groove 23 at the bottom of the insertion hole 22,
The three stopping teeth 45 of the lock head 43 can be fitted in the three cutout grooves 34 of the holding cylinder 30.

Subsequently, when the lock plug 12 is rotated to the locked position by the key, as shown in FIGS.
2 rotates the lock ring 20 to a predetermined angle in conjunction with it, and the rotating part 21 and the insertion hole 22 also rotate accordingly, that is, the angular position where the three vertical grooves 24 and the locking teeth 44 are shifted from each other. The locking teeth 44 are locked on the inner wall surface of the insertion hole 22 and cannot be pulled out, so that the lock cylinder 10 and the lock bolt 40 can be locked. On the other hand, the locking teeth 45 at the rear end of the lock head 43 are locked in the cutout grooves 34 of the holding cylinder 30, and the lock bolt 40 is engaged with the lock cylinder 10 and cannot be rotated. It is possible to prevent the lock cylinders 10 from rotating relative to each other and separating from each other.

When locking the lock target 100, as shown in FIG. 3, the bolt portion 41 of the lock bolt 40 is inserted into the retaining ring 101 of the lock target 100, and the outer diameter of each of the bolt portions 41 is relatively small. Since the large lock cylinder 10 and the shank portion 42 cover, the lock cylinder 10 and the shank portion 42 jointly hold both sides of the lock target 100, whereby the lock target 100 can be securely locked. The portion 41 is embedded in the retaining ring 101 and is not exposed, so that the bolt portion 41 can be prevented from being broken by a cutting tool, and the outer diameters of the lock cylinder 10 and the shank portion 42 are somewhat larger than those of the bolt portion 41. As shown in the figure, the height difference of the stepped edge portion 46 is small and there is no applied point, and even if the stepped edge portion 46 is forcibly opened with a tool, it is warped. The tool tends to slip away from the repulsive force and, therefore, the present invention has a very good breaking prevention function.

That is, the lock device of the present invention mainly solves the problems of the usability and the anti-theft property of the U-shaped shackle 2 in a conventional lock, and the technical means to be used is a lock cylinder 10 and a lock bolt. A lock plug 12, a lock ring 20, and a holding cylinder 30 are provided inside the lock cylinder 10, and a lock ring 2 is provided.
The insertion part 22 having three vertical grooves 24 is formed in the rotating part 21 of the zero, the fixing hole 33 having three notches 34 is formed in the holding cylinder 30, and the lock head 43 of the lock bolt 40 is formed.
Three locking teeth 44 and three stopping teeth 45 are formed at the front and rear ends, respectively, and the lock plug 12 rotates the lock ring 20 in conjunction with the insertion and rotation of the key, thereby inserting the insertion hole 22 and the longitudinal groove. The normal unlocking and locking functions can be effected by positioning or displacing the locking teeth 24 and the locking teeth 44 on the same straight line, thus the lock bolt 40 and the lock cylinder 1
Since the locking and unlocking can be performed using the insertion fitting of 0, it is considerably quick and convenient in use, and the bolt portion 41 is buried in the retaining ring 101 of the lock target 100 and is not exposed. Since both ends are protected by the solid lock cylinder 10 and the shank portion 42 having a large outer diameter, breakage and cutting can be prevented, and the antitheft property is extremely excellent.

The lock bolt of the present invention can be changed to another embodiment, and as shown in FIG.
The bolt portion 61 and the shank portion 62 may be separately assembled. The bolt portion 61 is formed to be long, lock heads 63 are provided at both ends thereof, and the locking teeth 631 If the teeth 632 are provided and the shank portion 62 has the same structure as the lock cylinder 10, the lock plug 12 can be provided with two different lock heads.

[0018]

As described above, according to the present invention, the lock cylinder is combined with the lock bolt, the lock cylinder is provided with the lock plug, the lock ring, and the holding cylinder, and the rotary portion of the lock ring is provided with three vertical grooves. Open the insertion hole, open a fixing hole with three notches in the holding cylinder, and form three locking teeth and three stopping teeth at the front and rear ends of the lock head of the lock bolt, respectively. The lock plug is turned into the lock ring 20 by inserting and rotating the key.
When the are rotated in conjunction with each other, the insertion hole, the vertical groove, and the locking teeth can be positioned on the same straight line or shifted from the same straight line to unlock and lock. Therefore,
It is quite quick and convenient in use, especially since the bolt part is buried in the retaining ring to be locked and is not exposed, and both ends of the bolt part are protected by a solid lock cylinder and shank part with a large outer diameter,
It has excellent anti-theft properties because it can prevent destruction and cutting.

[Brief description of the drawings]

FIG. 1 is a three-dimensional exploded view of a preferred embodiment of a lock device according to the present invention.

FIG. 2 is a three-dimensional view schematically illustrating locking of an object to be locked by the lock device according to the present invention.

FIG. 3 is a partially cutaway front view schematically showing a state in which a locking target of the lock device according to the present invention is locked.

FIG. 4 is a cross-sectional view of the lock head and the insertion hole in the unlocked state of the lock device according to the present invention.

FIG. 5 is a sectional view taken along the line IV-IV in FIG. 4;

FIG. 6 is a cross-sectional view of the lock head and the insertion hole in the locked state of the lock device according to the present invention.

FIG. 7 is a sectional view taken along the line VI-VI in FIG. 6;

FIG. 8 is a three-dimensional exploded view of another embodiment of the lock device according to the present invention.

FIG. 9 is a schematic three-dimensional view showing a locked state of a conventional lock.

DESCRIPTION OF SYMBOLS 10 lock cylinder 11 lock plug chamber 12 lock plug 121 lock tip 13 rotating cavity 14 ridge 15 fitting seat 16 ring groove 20 lock ring 21 rotating part 22 insertion hole 23 annular groove 24 vertical groove 30 holding cylinder 31 Fixing groove 32 Seat hole 33 Fixing hole 34 Notch groove 40, 60 Lock bolt 41, 61 Bolt part 42, 62 Shank part 43, 63 Lock head 44, 631 Locking tooth 45, 632 Stopping tooth 46 Stepped edge part 50 Dustproof sleeve DESCRIPTION OF SYMBOLS 51 Fitting opening 52 Projecting part 53 Hole 54 Groove 55 Dustproof cover 551 Knob 100 Locking object 101 Retaining ring

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 63/00 E05B 67/00 E05B 73/00 E05B 15/00 E05B 17/14-17/18

Claims (7)

(57) [Claims] A lock cylinder having a lock plug chamber in which a lock plug is fitted at an inner front end of a cylindrical body having a predetermined outer diameter, a keyhole formed in an outer end of the lock plug, and a rotary cavity formed in the rear of the lock plug chamber. The lock plug is fixed to the rear end of the plug and is rotated in conjunction with it.An insertion hole is opened in the rear end face of the rotating part provided at the rear end, and an annular groove is provided around the inner bottom surface of the insertion hole. Three vertical grooves recessed at equal intervals along the axis on the inner peripheral wall of the hole part of the insertion hole are fixed inside the rotating cavity of the lock ring and the lock ring communicating with the annular groove, and provided inside the lock ring. The rotating part of the lock ring can be housed inside the seat hole, and a fixing hole communicating with the insertion hole of the rotating part is formed near the outer end of the seat hole, and three notched grooves are recessed at equal intervals on the inner peripheral wall of the fixing hole Locking cylinder, a bolt part and a shank part. The bolt part has a predetermined length and the rod diameter is smaller than the lock cylinder and the shank part. A lock head that can pass through an elephant and can be inserted into the lock cylinder at the tip of the bolt part, and three locking teeth protruding at equal intervals around the front end of the lock head have three lock grooves from three vertical grooves. The locking teeth can be locked and fixed in the insertion hole from the rotation of the lock ring by a predetermined angle, and three stopping teeth protruding at equal intervals around the rear end of the lock head are held A lock device having a lock bolt that locks in three notched grooves of a cylinder, thereby locking a lock bolt and a lock cylinder. 2. A protruding ridge along the axis is provided on the inner wall surface of the rotation cavity of the lock cylinder, and a fixing groove is formed on the outer peripheral surface of the holding cylinder to be fitted with the ridge. 2. The lock device according to claim 1, wherein the joining edges of the lock devices are welded and sealed. 3. A dust-proof sleeve is externally fitted to an outer peripheral edge portion corresponding to a lock plug of a lock cylinder, and a fitting opening for fitting around the lock cylinder is formed in the dust-proof sleeve. A hole is provided at a position corresponding to the keyhole, a groove is provided near a peripheral edge of an end face of the dustproof sleeve, and a dustproof cover is mounted in the groove so as to be movable so that opening and closing of the hole can be controlled. The lock device according to claim 1. 4. A lock groove is provided on the outer peripheral surface of the lock cylinder, and a corresponding double protrusion is provided on the inner peripheral surface of the fitting opening of the dustproof sleeve, and the double protrusion is engaged with the ring groove. The lock device according to claim 1 or 3, wherein: 5. The locking device according to claim 1, wherein a knob is provided on the outer surface of the dustproof cover. 6. The lock device according to claim 1, wherein the bolt portion and the shank portion of the lock bolt are formed integrally. 7. The method according to claim 1, wherein the bolt portion and the shank portion are separately formed, lock heads are provided at both ends of the bolt portion, and each lock head is combined with the shank portion and the lock cylinder, respectively. Locking device.