JPH037494Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a lock in which the U-shaped hook bar is completely detachable from the lock body.

(Prior Art) A typical example of this type of lock is a so-called padlock, in which a hook bar is inseparably attached to the lock body, and one end of the hook bar is inserted into a receiving hole in the lock body. The other end is inserted and fixed into the shaft hole of the lock body in a non-removable manner.

(Problem to be solved by the invention) Therefore, the length of the hook bar is not compatible with each lock body, and when the object to be locked is large, the lock body itself must be made large. However, it is actually uneconomical to manufacture locks of various sizes depending on the size of the object to be locked.

Further, since the entire hook bar cannot be separated from the lock body, the work of attaching and removing the hook bar to the object to be locked is complicated and cannot be carried out smoothly.

Therefore, the purpose of the present invention is to eliminate the need to change the size of the lock body even if the size of the object to be locked changes.
To provide a lock which is easy to manufacture and assemble and requires only the replacement of biasing parts at low cost, which simplifies the work of hooking and unhooking a hook bar, and which is excellent in the simplicity of locking operation.

(Means for Solving the Problem) Hereinafter, it will be explained based on the drawings that the hook bar separable lock of the present invention includes a lock body 1, and tip portions 4a, 4b in shaft holes 2, 3 provided in the lock body 1. A U-shaped hook rod 4 into which is fitted, a rotor 5 which is fitted and fixed to the lock body 1, and engaging protrusions 15 and 16 at one end are engaged with the rear end of the rotor 5 so as to interlock with the rotor 5. death,
The other ends 6a, 7a are connected to the hook rod tips 4a, 4b.
The retaining members 6, 7 are engaged with the notches 8, 9 and fitted into the sliding groove 18, and the retaining members 6, 7 are
It consists of a spring 17 that biases the shafts in a direction that repel each other, and push-out members 12 and 13 that fit into the bottoms of the shaft holes 2 and 3 and are biased forward by the springs 10 and 11,
When the key 19 is inserted and the rotor 5 is rotated, the hook bar 4 is detached from the lock body 1.

(Embodiment) In the illustrated embodiment, the rotor 5 relative to the lock body 1
A pin tumbler type locking structure is adopted as the locking mechanism, and a groove 14 is provided at the rear end of the rotor. The dividing groove 14 is provided with retaining members 6 and 7.
The engaging protrusions 15 and 16 are engaged. Notch grooves 23 and 24 are provided on the side surfaces of the push-out members 12 and 13, and balls 25 and 26, which are recessed halfway into the lock body 1, are engaged with the cut-out grooves 23 and 24, and the push-out members 12 , 13 are prevented from escaping.

The extrusion members 12 and 13 have lower side walls 30 and 31.
Step portions 27 and 28 having sloped cam shapes are provided, and pins 21 and 2 are inserted into pin holes 20 and 20 that are inserted perpendicularly to the rotor 5 from the height of the step portions 27 and 28.
1 is pushed out by springs 22, 22.
It is biased forward in three directions. The rotor 5 is provided with recesses 29, 29 at positions where the pins 21, 21 come into contact at the end of rotation of the rotor.
can be mated.

(Function) When the key 19 is inserted into the locked rotor 5 to unlock the lock body 1 and the rotor 5 is rotated, the engaging protrusions 15 and 1 engaged with the split groove 14 are rotated.
6 moves eccentrically, the retaining members 6 and 7 slide in the sliding groove 18 against the bias of the spring 17, and the ends 6a and 7a are connected to the notches of the hook rod tips 4a and 4b. It's out of 8 and 9. At the same time, the pins 21, 21 whose ends were restrained by the rotor 5 in the locked state face the recesses 29, 29, and the push-out members 12, 13 slide due to the urging force of the springs 10, 11. Therefore, the lower side wall 3 with a sloped cam shape
0 and 31 push the unrestrained pins 21 and 21 into the recesses 29 and 29, and push out the hook rod 4 from the shaft holes 2 and 3 of the lock body 1. At this time, the push-out members 12 and 13 do not come out because the balls 25 and 26 are engaged with the notch grooves 23 and 24.

Next, when the hook rod tips 4a, 4b are inserted into the shaft holes 2, 3 and the end surfaces of the extrusion members 12, 13 are pressed, the extrusion members 12, 13 resist the bias of the springs 10, 11 and , 3. Here, since the pins 21, 21 are urged forward in the direction of the pushing members 12, 13 by the springs 22, 22, they protrude along the lower side walls 30, 31, and the pins 21, 21
1 comes off from the recesses 29, 29 of the rotor 5. At the same time, due to the bias of the spring 17, the ends 6a, 7a of the retaining member engage with the notches 8, 9 of the hook rod tips 4a, 4b, and the engaging protrusions 15, 16 engage with the rotor 5. The hook rod 4 is locked into the lock body 1 by rotating the . Here, springs 10 and 11 are springs 22 and 22
It has a sufficiently strong urging force against.

(Effect of the invention) As described above, the lock of the present invention includes a lock body 1, a U-shaped hook rod 4 whose tips 4a and 4b are fitted into the shaft holes 2 and 3 of the lock body 1, and a lock body 1. One end of the engaging protrusions 15 and 16 are engaged with the rear end of the rotor 5 so as to be interlocked with the rotor 5, and the other ends 6a and 7a are connected to the hook rod tip 4.
Removal prevention members 6 and 7 that are engaged with the notches 8 and 9 of a and 4b and fitted into the sliding groove 18, and springs that bias the removal prevention members 6 and 7 in a direction that repel each other. 1
7, and push-out members 12 and 13 that fit into the bottoms of the shaft holes 2 and 3 and are biased forward by springs 10 and 11. When a key 19 is inserted and the rotor 5 is rotated, the lock is activated. Since the hook bar 4 is completely detached from the main body 1, there is no need to change the size of the lock body 1 even if the size of the object to be locked changes, and the hook bar is an easy-to-manufacture and inexpensive accessory part. It is sufficient to replace 4 as appropriate.

Furthermore, with conventional locks in which one end of the hook bar is permanently attached to the lock body, sufficient clearance cannot be obtained between the lock body and the other end of the hook bar unless the hook bar is rotated after unlocking. Although the hook bar cannot be removed from the object to be locked, with the lock of the present invention, there is no need to rotate the hook bar at all when engaging and removing the hook bar, so it is easy to unlock and lock the object even in a narrow space.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the lock in an unlocked state. FIG. 2 is a longitudinal sectional view of the lock in an unlocked state, and FIG. 3 is a longitudinal sectional view of the lock in an unlocked state. Figure 4 is A- in Figure 2.
5 is a sectional view taken along the line B-B' in FIG. 3. FIG. 1... Lock body, 2, 3... Shaft hole, 4... Hook rod, 5... Rotor, 6, 7... Removal prevention member,
8, 9... Notch, 10, 11... Spring, 12,
13... Extrusion member, 14... Division groove, 15, 16
...Engaging protrusion, 17...Spring, 18...Sliding groove,
19...Key, 20...Pin hole, 21...Pin, 2
2... Spring, 23, 24... Notch groove, 25, 26
... Ball, 27, 28 ... Step portion, 29 ... Recessed portion, 30, 31 ... Lower side wall.

Claims (1)

[Scope of utility model registration request] A lock body 1, a U-shaped hook rod 4 whose tips 4a and 4b are fitted into shaft holes 2 and 3 provided in the lock body 1, a rotor 5 fitted and fixed to the lock body 1, and the rotor 5. The engaging protrusions 15 and 16 at one end are engaged with the rear end of the rotor 5 so as to interlock with the rear end of the rotor 5, and the engaging protrusions 15 and 16 at the other end
The notches 8 and 9 of the hook rod tips 4a and 4b
The retaining members 6 and 7 that are engaged with and fitted into the sliding groove 18, the spring 17 that biases the retaining members 6 and 7 in the direction of repelling each other, and the bottoms of the shaft holes 2 and 3. push-out members 12 and 13 that are fitted into the lock body and urged forward by springs 10 and 11, and when the key 19 is inserted and the rotor 5 is rotated, the hook bar 4 is separated from the lock body 1. Type lock.