JP2911880B1 - padlock - Google Patents

Abstract

An object of the present invention is to insert or remove a plug held or fitted and fixed in a case with a hand tool, and to replace the plug.
In addition, both protective covers can be advanced and retracted into the case, and can be protected without affecting the function of the shackle, and a padlock which is easy to assemble and replace the plug and has excellent anti-theft properties and locking operability is provided. I do. The plug includes a case (20), a shackle (30), both locking bars (40), a plug (100), and both protective covers (50), and the plugs sandwich or lock the locking bars. If the plug is fixed in the case by the insertion and insertion of (27), and the plug is released from the locking relationship with the locking bar or the fitting plug by the hand tool (200), the plug can be quickly replaced and each protection can be achieved. The cover is provided with a toothed rack (51) which meshes with the pawl (43) provided on each of the locking covers, and by appropriate operation, the protective covers (50) are pulled out of the case to cover and protect the shackle. Alternatively, the plug can be quickly and easily replaced by being pushed into the case, and the effect of preventing theft and excellent operability can be exhibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a padlock, and more particularly, to a padlock in which plugs can be easily replaced, theft prevention and operability are excellent.

[0002]

2. Description of the Related Art The structure of a conventional padlock includes an example as shown in FIG.
And both ends of the shackle 11 can be locked and fixed in the case 10. The two protective covers 12 are hollow tubes formed separately from the case 10. The two protective covers 12 protectively cover the shackle 11 to prevent the shackle 11 from being cut. When one end of the shackle 11 comes out of the case 10, the protective cover 12 is detached from the case 11 to release the locked state.

[0003]

According to the structure described above, the locking function can be surely achieved, but there is still room for improvement in terms of theft prevention and use. That is, most of the general padlock has the plug fixed in the case 10, and if the plug is damaged, the padlock cannot be used as a whole and there is no other way than to throw it away, so there is no obvious way. In addition, since this kind of padlock has only one plug, if the key is imitated, lost, or the code is known, the padlock loses security and the anti-theft effect is reduced. On the other hand, when locking using a padlock provided with the protective cover 12,
Because of the thickness of the protective cover 12, it is difficult to hook the shackle 11 on the latch, and it often takes time to hook the shackle 11, and after unlocking, the protective cover 1
2 is easily detached from the case 10, and
Lack of convenience of locking operation.

[0004] In view of the above problems with the conventional padlock,
According to the present invention, a plug pinched or fitted and fixed in a case can be replaced by pushing and pulling out with a hand tool, and both protective covers can be advanced and retracted in the case to protect the shackle without affecting the function of the shackle. It is an object of the present invention to provide a padlock which can be easily assembled and replaced with a plug, and is excellent in anti-theft property and locking operability.

[0005]

In order to achieve the above object, a padlock according to the present invention is provided with a cylinder portion in which a plug is fitted, and socket holes communicating with the cylinder portion are provided on both side ends thereof. A resiliently urged fitting plug is provided at a predetermined position in each of the socket holes so that the plug can be fitted to the plug. A case provided with a path, a shackle in which both ends present U-shaped rods respectively inserted into the socket holes, and cuts are provided in opposing side surfaces of the both ends, Arranged on the upper end side of the cylinder portion of the case, inwardly inclined claws are respectively provided on both outer ends, and each of the elastic members attached to the upper end surface is pressed and pushed by both ends to exhibit a locked state. The two locking bars, which move inward due to the rotational contact of the operating member of the plug sandwiched between them and exhibit an unlocked state, and the upper and lower slidably fitted inside the groove path of the case and opposed to each other inside Toothed racks are engraved on the edges, respectively, and the left and right toothed racks are engaged with the pawls of the locking bars so as to be prevented from moving up and down. You.

[0006] Each of the locking bars has a U-shape with the opening facing downward, and a braking portion is provided at each inner end and a locking portion is provided at each outer end. Arranged crosswise on the upper end side of the cylinder part, a locking space is formed by the inner surfaces of both braking parts when the cylinder part is disposed, and the gripping member of the plug is sandwiched. When pushed inward, the locking space is expanded laterally so that the operating member can be released so that the plug can be easily replaced, or a locking seat can be provided at the bottom of one of the socket holes in the case. Is provided on the upper end surface of the locking seat, and a fitting plug is provided elastically in a horizontal direction, and a fitting recess is provided on the outer peripheral surface of the plug corresponding to the fitting plug, and the fitting plug is formed in the fitting recess. By fitting and fixing, the fitting plug is pushed and moved out of the fitting recess. The lugs can be easily replaced, or two arc plates are provided on the bottom surface of each of the locking bars to abut and lock the respective balls, and the balls are engaged by the rotational pressing of the operating member of the plug. The stop bar can be slidably linked, the outer end of the locking bar is bifurcated to form a pawl, and each pawl is provided in a tapered shape having both upper and lower side surfaces inclined. A projection plate is protruded from the upper end surface of each locking bar, and both ends of the elastic member are hooked to the projection plates of the both locking bars, respectively, to elastically urge the both locking bars inward. It is more preferable that the pawl can be inserted and locked in the toothed rack of each protective cover, and furthermore, a locking tab is projected outward from the upper edge of the protective cover.

In the present invention constructed as described above, the plug is clamped by the both locking bars or fitted in the fitting plug and fixed in the case. When the plug is moved from the sandwiched state or the fitted state to the plug by moving the plug, the plug can be easily removed from the case and quickly replaced. In addition, since the protective cover is provided in the case so as to be able to advance and retreat, it is possible to effectively prevent the shackle from being cut and broken by pulling out the protective cover and covering it with the shackle in the locked state. In the locked state, the protective cover can be stored in the case so that the shackle is not hindered from being inserted into the latch of the object to be locked.

[0008]

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 embodiments. As shown in FIGS. 1 and 2, a relatively preferred embodiment of the padlock of the present invention mainly includes a case 20, a shackle 30, both locking bars 40, and both protective covers 50.

The case 20 has a substantially rectangular seat body, and a cylinder portion 21 into which a plug 100 can be fitted is provided inside the case 20. A T-shaped operating rod member is provided at the upper end of the plug 100. At the same time, socket holes 22 are opened at both side ends of the case 20, and the upper portion of the cylinder portion 21 and the socket holes 22 communicate with each other through an opening 21a provided in the cylinder portion 21. Grooves 23 of the left and right protective covers 50 are provided on the sides of the hole 22 so as to correspond to each other. A bottom opening 24 is formed in the bottom of the cylinder portion 21 of the case 20, and a bottom cover is formed in the bottom opening 24. 25 is fixed by welding.

The shackle 30 is a U-shaped rod whose both ends are inserted into the socket holes 22 of the case 20, and cuts into opposing side surfaces of both ends which are inserted into both socket holes 22. 31 is provided, a shaft rod 32 having a reduced rod diameter is extended at one end, and a spring 33 is disposed at the bottom of the socket hole 22 into which the shaft rod 32 is inserted. The lower end of the shaft rod 32 is urged upward by 33 so that the shackle 30 projects upward when unlocked.

The two locking bars 40 are connected to the cylinder 2
(1) Arranged in a cross shape on the upper end side, each has a U-shape with the opening substantially facing downward, a braking portion 41 is provided at each inner end portion, and a locking portion 42 is formed at each outer end portion. Then, a T-shaped locking space A is formed between the locking bars 40 and the inner surfaces of the respective braking portions 41 when the locking bars 40 are arranged in an intersecting manner. The operating member 101 is held in the case 20 by being sandwiched between the braking portions 41 so that the operating member 101 can be fitted into the locking space A. A locked state can be formed if the locking portion 42 at the outer end of the locking bar 40 moves outward through the opening 21 a and abuts and locks on the cut 31 of the shackle 30. A claw 43 having an inwardly inclined end surface is provided on both sides of the upper end on the side of the locking portion 42, and a groove type 44 for attaching an elastic member 45 to each locking bar 40 is provided. 45, both ends of each locking bar 40 are in contact with each other.
0 is stretched outward to abut and lock the notch 31 of the shackle 30, thereby forming a locked state.
When the two braking portions 41 receive the rotational contact of the operating member 101 of the plug 100, the two locking bars 40 move inward to exhibit the unlocked state.

The protective covers 50 are semi-cylindrical bodies which are slidably fitted in the groove 23 of the case 20 and provided with toothing racks 51 at inner edges facing each other. Each of the left and right toothed racks 51 is formed of a plurality of teeth having upper surfaces that are inclined, and when the locking bars 40 are elastically pressed outward, the pawls 43 are moved to the left and right, respectively. Each of the toothed racks 51 is engaged with the toothed rack 51, and a rectangular restraining recess 511 is provided at the bottom of each toothed rack 51. When the protective cover 50 is pulled up excessively, a stopping action is performed. Further, locking tabs 52 are provided outwardly on the upper edge of each protective cover 50, and each protective cover 50 is
Can be easily pulled up.

[0013] The above has described each member and the related position of the padlock of the present invention. Next, the operation of each member and the achievable functions and functions will be described. As shown in FIG. 3, in the unlocked state, a key (not shown) is inserted into the plug 100 and the locking bar 40 is moved inward by the operating member 101 in the plug 100 by rotating the key. The shackle 30 is released from the locking of the locking bar 40 and projects upward by the spring 33. At this time, due to the inward movement of the locking bars 40, the pawls 43 are simultaneously disengaged from the toothed racks 51 of the protective covers 50, and the protective covers 50 are automatically moved to the case 2 by their own weight.
The protective cover 50 falls into the groove 23, and the two protective covers 50 are housed in the case 20 so as not to interfere with the locking and unlocking operations. As can be seen from FIG. 2 at the same time, when locking, the shackle 30 is
0, the two protective covers 5
0 is engaged with the pawl 43 of the locking bar 40 elastically pushed outward, so that the two protective covers 50 can be pulled up but cannot be pressed down. By covering around the shackle 30, the shackle 30 can be prevented from being cut and broken.

Next, as shown in FIG.
If the plug reaches a certain life or is damaged, the plug 10
However, when the plug 100 is replaced in the present invention, first, the shackle 30 is unlocked with a key, the shackle 30 is projected from the socket hole 22 of the case 20, and then the hand tool 200 (for example, Clip 20) to the case 20
When the plug is inserted into the socket hole 22 and the locking portion 42 on the outer side of the locking bar 40 is pressed inward to the innermost position, the entire locking space A of the locking bar 40 is enlarged, and the plug The operating member 100 is completely disengaged without being restricted by the braking portion 41 of the locking bar 40, so that the entire plug 100 can be easily taken out, and a new plug can be inserted into the cylinder portion 21 of the case 20. Can be incorporated and replaced. Then, when the operating member of the new plug is inserted into the locking bar 40, the locking bar 40 automatically clamps the operating member from the left and right, and the new plug is unlocked with respect to the locking bar 40. And the locking operation can be performed, and thus the plug replacement operation can be performed.

In the above-described embodiment, the plug 100 is supported by the case 20 with the operating member 101 held between the locking bars 40. As in the embodiment, a fitting plug 27 is provided in a lateral groove 252 via a spring 26 while a plug 100 is provided.
May be provided with a fitting recess.

Also, in accordance with the conventional padlock with a ball, the present invention combines another type of locking bar, and similarly, the plug can be quickly replaced, and the protective cover can be slidably protected. The structure and operation of this alternative embodiment will now be described. As shown in FIGS. 5 and 6, a plug 100 ′ is incorporated in a case 20 ′, the operating member 101 ′ of the plug 100 ′ is formed by a column having a rectangular cross section as viewed, and both left and right balls 300 are shackle 30. And the plug 100 ′ is provided with a fitting recess 102 ′ on the outer peripheral surface, and a locking seat 251 is protruded from the bottom lid 25 of the case 20 ′. A lateral groove 252 for housing a spring 26 and a fitting plug 27 is provided on the upper end surface of the seat 251. The spring 26 elastically presses the fitting plug 27, and the head portion of the fitting plug 27 is connected to the plug 100 '.
Of the plug 100 ′.
Is fixed in the case 20 ′. At the same time, as can be seen from FIG. 7, arc-shaped plates 41 'are provided on the bottom surfaces of both the left and right locking bars 40' so as to be able to make contact with the balls 300, and each ball 300 is connected to the lever of the plug 100 '. Member 10
Each of the locking bars 40 'can be slid in conjunction with each other by receiving the rotation pressure of 1', and the outer ends of the locking bars 40 'are bifurcated to form pawls 43', respectively. Each pawl 4
3 'is tapered so that both upper and lower sides are inclined. Also, a projecting plate 44 ′ is projected from the upper end surface of each locking bar 40 ′, and both ends of the elastic member 45 ′ are hooked to the projecting plates 44 ′ of the both locking bars 40 ′. The stop bar 40 'is elastically urged inward, and each pawl 43' can be inserted and locked in the toothed rack 51 of each protective cover 50. Further, the shackle 30 'is a spring at the lower end of its long end. Each of the balls 300 is urged inward from the pressure contact of the shackle 30 ′ to come into contact with the operating member 101 ′ by providing an elastic upward output force by the elasticity of the tension of the operating member 33 ′. Since it is not formed, no noise is generated, and at the same time, each arc plate 41 ′ cannot move inward due to the stopping action of each ball 300, forming a locked state.

As shown in FIGS. 8 and 9, when the locked state is released, when the operating member 101 'is rotated by a predetermined angle, the operating member 101' releases the pressing on the two balls 300. Shackle 30 'is projected by spring 33', and both balls 300 move inward, so that both locking bars 4 '
0 ′ moves inward without being stopped by the contact of the two balls 300, and since the upper and lower surfaces of the claws 43 ′ are inclined, the two protective covers 50 are pushed into the case 20,
Alternatively, the shackle 3 is pulled out of the case 20 and
0 'can be protected.

Further, as shown in FIG.
When replacing 0 ', the locked state of the plug 100' is released, the shackle 30 'is protruded from the socket hole 22' and rotated, and the fitting plug 27 is opened from the opening 251a by the hand tool 200. Move it out and plug 1
By detaching from the fitting recess 102 ′ of 00 ′,
Take the plug 100 'out of the cylinder 21',
Plugs can be changed quickly.

[0019]

According to the padlock of the present invention constructed as described above, the locking bar is braked by the plug and abuts on the shackle corresponding to the case where the locking state is formed by the locking bar. In addition to having a function of holding the plug in the case, and corresponding to the case where the ball is locked by a ball, a fitting plug is directly fitted into the plug in the case to fit inside the case. Since it is fixed to
If the shackle is removed from the case after the correct unlocking operation, the locking bar or the fitting plug can be pressed and braked with a hand tool, and the plug can be quickly removed or assembled, quickly and conveniently without breaking the case The plug can be replaced. And when multiple sets of different types or plugs with different codes are prepared and used, the thief can greatly improve the anti-theft property of the padlock without knowing what the current padlock is or what type of code it is. Can be. In addition, since the protective cover is provided so as to protrude into the case, in the locked state, the protective cover can be pulled out and covered with the shackle, thereby effectively preventing the shackle from being cut and broken. Further, since the shackle is stored in the case in the unlocked state and does not affect the insertion of the shackle into the latch of the object to be locked, the shackle does have excellent practicality.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of a padlock according to the present invention.

FIG. 2 is a sectional view of the assembled state (locked state) of FIG. 1;

FIG. 3 is a sectional view of the unlocked state of FIG. 2;

FIG. 4 is an operation display diagram when a plug is replaced.

FIG. 5 is a sectional view of the second embodiment of the padlock according to the present invention in an assembled state (locked state).

FIG. 6 is a sectional view of a main part of FIG. 5;

FIG. 7 is a perspective view of a locking bar according to a second embodiment.

FIG. 8 is a view showing an operation mode of the protective cover according to the second embodiment.

FIG. 9 is a view showing the operation of the locking bar in the unlocked state in FIG. 6;

FIG. 10 is an operation display diagram when a plug is replaced in the second embodiment.

FIG. 11 is a partial cross-sectional perspective view of a conventional padlock.

[Explanation of symbols]

 100, 100 'Plug 101, 101' Operating member 102 'Fitting recess 20, 20' Case 21 Cylinder 22, 22 'Socket hole 23 Groove 251 Locking seat 27 Fitting plug 30 Shackle 31 Cut 40, 40' Locking bar 41 Braking portion 41 'Arc plate 42 Locking portion 43, 43' Pawl 44 'Projecting plate 45, 45' Elastic member 50 Protective cover 51 Additional tooth rack 52 Locking tab

Claims (5)

(57) [Claims] A cylinder portion for fitting a plug therein is provided therein, and socket holes communicating with the cylinder portion are provided on both side ends of the cylinder portion, respectively, and fitting portions urged elastically at predetermined positions in the socket holes, respectively. A case in which a plug is provided so that the plug can be fitted to the plug, and corresponding left and right protective cover grooves are provided adjacent to the both socket holes; A shackle having a U-shaped rod to be inserted into, and provided with cuts in the opposite side surfaces of the both ends, and a shackle disposed on the upper end side of the cylinder portion of the case and provided on both outer ends, respectively. An inwardly-inclined claw is provided, and each of the elastic members attached to the upper end surface is pressed and pushed by each end to exhibit a locked state, and moves inward due to a rotational conflict of the operating member of the plug held inward. Locking bars which are in the unlocked state, and are vertically slidably fitted in the grooves of the case, and toothed racks are engraved on inner edges facing each other, and the left and right toothed teeth are respectively provided. A padlock comprising: a protective cover that is prevented from moving up and down by a rack engaging with the respective pawls of the locking bars. 2. The two locking bars each have a U-shape with an opening facing downward, a braking portion provided at each inner end and a locking portion provided at each outer end, and Arranged crosswise on the upper end side of the cylinder part, a locking space is formed by the inner surfaces of both braking parts when the cylinder part is disposed, and the gripping member of the plug is sandwiched. If you push inward, the above locking space is expanded laterally,
2. The padlock according to claim 1, wherein the operating member is released so that the plug can be easily replaced. 3. A locking seat is provided at the bottom of one of the socket holes of the case, and a fitting plug is elastically provided laterally on the upper end surface of the locking seat, and the plug corresponding to the fitting plug is provided. By providing a fitting recess in the outer peripheral surface, the fitting plug is fitted and fixed in the fitting recess, and the plug can be easily replaced by pushing out the fitting plug from the fitting recess. The padlock according to claim 1. 4. An arcuate plate for abutting and locking a ball is provided on the bottom surface of each of the locking bars, and the ball is slidably moved by the rotation of the operating member of the plug. The outer ends of the locking bars are bifurcated to form claws, and each of the claws is tapered so that both upper and lower surfaces are inclined. And both ends of the elastic member are hooked to the projection plates of the both locking bars, respectively, so that the two locking bars are elastically biased inwardly, and the claws are attached to the respective protective covers. The padlock according to any one of claims 1 to 3, wherein the padlock can be inserted and locked in the toothed rack. 5. The padlock according to claim 1, wherein a locking tab portion projects outward from an upper edge of the protective cover.