JPH0218214Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lock equipped with a hook bar that is hooked onto an object to be locked.

[Prior Art] A typical example of this type of lock is a so-called padlock. In a padlock, a hook bar is directly mounted on the lock body, and one end of the U-shaped hook bar is attached to the left end of the lock body, for example. It is inserted into the shaft hole, and the other end is inserted into and removed from the receiving hole at the right end of the lock body.

Therefore, the distance between both ends of the hook rod is inevitably regulated by the width dimension of the 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.

[Problem to be solved by the invention] Therefore, the purpose of the 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 with a hook bar, which is easy to manufacture and assemble, requiring only replacement of accessory parts at low cost, and is excellent in ease of locking operation.

[Means for Solving the Problems] The lock with a hook bar of the present invention will be explained below using the reference numerals in the attached drawings. , a lock body 2 housed and fixed in the front end of the outer cylinder 1, and a front end wall 1.
a semi-cylindrical inner cylinder 4 that is fitted and connected to the operating shaft 3 of the lock body 2 through the shaft hole 13 of the lock body 2 and rotates within the outer cylinder 1;
A cross-receiving groove 5 with which the side edge 10 of the inner cylinder 4 engages is provided on the circumferential surface of both ends inserted into the side holes 8, 8 of the outer cylinder 1, and a slope cam part 6 is provided at the tip. It consists of a U-shaped hook rod 7 and a spring 9 that biases the inner cylinder 4 to rotate so that the side edge 10 of the inner cylinder 4 appears in a part of the side hole 8. A play is provided between the operating shaft 3 and the operating shaft 3, and when the operating shaft 3 is locked to the lock body 2, the inclined cam portion 6 of the hook rod 7 pushes the side edge portion 10 of the inner cylinder 4, and the inner cylinder 4 is opened. The cylinder 4 is independently rotated in the reverse direction.

[Operation] When each end of the hook rod 7 hooked on a locking object (not shown) is inserted into each side hole 8 of the outer cylinder 1, the inclined cam part 6 at the tip touches the side edge of the inner cylinder 4. Part 10
Since the inner cylinder 4 is in sliding contact with the inner cylinder 4, the inner cylinder 4 reversely rotates by a certain angle against the bias of the spring 9. When each end of the hook rod 7 is inserted into the outer cylinder 1 up to its transverse receiving groove 5, the inner cylinder 4 rotates forward by a certain angle by the bias of the spring 9, and the side end of the inner cylinder 4 The edge 10 projects into the transverse receiving groove 5 of the hook bar 7. Due to the engagement between the side edge portion 10 and the cross-receiving groove 5, the hook rod 7 is prevented from being removed from the outer cylinder 1.

To remove the hook bar 7 from the outer cylinder 1, remove the lock body 2.
All you have to do is insert the key 11 into the holder and turn the operating shaft 3 in a predetermined direction. By rotating the operating shaft 3, the inner cylinder 4 is reversely rotated against the bias of the spring 9, and the side edge 1 is rotated in the opposite direction.
0 escapes from the cross receiving groove 5. As a result, the hook rod 7 is released from its restraint on the outer cylinder 1 and can be extracted from the outer cylinder 1.

By removing the hook rod 7 from the outer cylinder 1,
It becomes possible to remove the hook bar 7 from the object to be locked, and the restraint of the object to be locked is also released.

[Embodiment] In the illustrated embodiment, the rotation urging force spring 9 of the inner cylinder 4
is composed of a coil spring, and one end of the spring 9 is connected to the outer cylinder 1.
The other end of the spring 9 is locked to a cut-and-raised portion 15 on the side wall of the inner cylinder 4 . The spring 9 is installed with a twisting load applied in advance.

The lock body 2 is a so-called axial pin tumbler lock, and a fixed plug 18 and a rotating plug 19 built into the lock body 2 are provided with a pin hole in the axial direction of the operating shaft 3, and a drive pin and a drive pin are provided in the pin hole. A driven pin is housed while being urged to slide forward by a spring, and the operating shaft 3 is formed integrally with the rotary plug 19.

When the cylindrical key 11 is removed from the circular keyhole 16 of the lock body 2, the driving pin is engaged with both the pin hole of the fixed plug 18 and the pin hole of the rotating plug 19, so the rotating plug 19 is fixed. It is locked to the plug 18 so as not to rotate.

When the key 11 is inserted into the keyhole 16, the driving pin pushed by the driven pin enters the pin hole of the fixed pillar 18, so the lock of the rotary plug 19 to the fixed plug 18 is released, and the key 11 is turned. This allows the operating shaft 3 to be rotated in a predetermined direction.

The rear end of the operating shaft 3 is fitted into the shaft hole 13 of the front end wall 12 of the inner cylinder 4 . A connecting screw 17 is screwed into an axial screw hole 20 at the rear end of the operating shaft 3 , and the head of the screw 17 abuts against the front end wall 12 of the inner cylinder 4 . In order to allow the inner cylinder 4 to freely rotate at a certain angle with respect to the operating shaft 3,
The screw 17 does not fasten the front end wall portion 12 of the inner cylinder 4 to the rear end surface of the lock body 2, and prevents the inner cylinder 4 from coming off from the operating shaft 3.

The shaft hole 13 in the front end wall 12 of the inner cylinder 4 is connected to the operating shaft 3.
It is a fan-shaped hole having opposing inner wall surfaces 13a and 13b that abut flat side surfaces 3a and 3b, and a free space exists between the inner wall surface 13b and the operating shaft side surface 3b.

As shown in FIGS. 2 to 4, when the key 11 is removed and the operating shaft 3 is locked in the fixing plug 18 of the lock body 2, the inner wall surface 13 of the shaft hole 13
a is in contact with the side surface 3a of the operating shaft 3, and the inner cylinder 4
is stopped at a position where its side edge 10 closes approximately half of the side hole 8 of the outer cylinder.

When the side edge 10 of the inner cylinder 4 is pushed by the inclined cam part 6 of the hook rod 7 inserted through the side hole 8 of the outer cylinder 1, the inner cylinder 4 rotates in the opposite direction against the bias of the spring 9, and the inner cylinder 4 rotates in the opposite direction. The cylinder 4 rotates at a certain angle with respect to the operating shaft 3 until the inner wall surface 13b of the shaft hole 13 comes into contact with the side surface 3b of the operating shaft 3.

When the hook rod 7 is inserted into the transverse receiving groove 5, the inner cylinder 4 is rotated forward by the bias of the spring 9, and the side edge 10 of the inner cylinder 4 projects into the transverse receiving groove 5. At this time, the inner cylinder 4 has an inner wall surface 13 of the shaft hole 13.
A rotates at a fixed angle with respect to the operating shaft 3 until the end a comes into contact with the side surface 3a of the operating shaft 3.

When the key 11 is inserted into the keyhole 16 of the lock body 2 and the operating shaft 3 is turned in a predetermined direction, the side surface 3a of the operating shaft 3 presses the inner wall surface 13a of the shaft hole 13, so the inner cylinder 4 resists the spring 9. Then, the side edge portion 10 escapes from the cross-receiving groove 5.

The present invention can be implemented in various ways, and instead of the axial pin tumbler lock, a cylinder lock using an ordinary plate key can be used as the lock body 2, and as the spring 9, A leaf spring, a torsion spring, or the like can be selected and used as appropriate, and the arrangement thereof is not particularly limited to that shown in the drawings.

[Effects of the invention] As described above, in the lock with a hook bar of the present invention, the hook bar 7 is not installed directly on the lock body 2, but is attached to the side surface of the outer cylinder 1 that houses and fixes the lock body 2 at the front end. Since it is inserted into and removed from the hole 8 and is restrained and held in the outer cylinder 1 by the semi-cylindrical cylinder 4 which is fitted and connected to the operating shaft 3 of the lock body 2, when the object to be locked is large, In order to accommodate the increase in the width of the hook rod 7, it is only necessary to replace it with one longer than the outer tube 1 and the inner tube 4.

The outer cylinder 1 and the inner cylinder 4 are extremely easy to manufacture and assemble at a low cost compared to the lock body 2, so unlike conventional locks that require the lock body itself to be larger, the present invention can be used. Therefore, locks with hook rods of various sizes, large, medium and small, can be provided at low cost.

Furthermore, in the lock with a hook rod of the present invention, play is provided between the shaft hole 13 of the inner cylinder 4 and the operating shaft 3, so that
By simply inserting the end of the hook rod 7 into the side hole 8 of the outer cylinder 1, the cross-receiving groove 5 of the hook rod 7 and the side edge 10 of the inner cylinder 4 are aligned by the action of the inclined cam part 6 and the spring 9. The engagement state is maintained accurately by the spring 9.

That is, when locking the hook rod 7 to the outer cylinder 1, there is no need to handle the key 11, and the locking operation is excellent in simplicity.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a lock with a hook bar according to an embodiment of the present invention before locking, and FIG. 2 is a longitudinal sectional view of the lock of FIG. 1. Figure 3 is A-A of Figure 2.
4 is a sectional view taken along line BB in FIG. 2. FIG. Figure 5 shows the fourth position when the hook bar is locked.
It is a sectional view corresponding to the figure. 1...Outer cylinder, 2...Lock body, 3...Operation shaft, 4
...Inner cylinder, 5...Transverse receiving groove, 6...Slope cam part,
7... Hook rod, 8... Side hole, 9... Inner cylinder biasing spring, 10... Side edge for locking, 11... Key,
13... Shaft hole, 14, 15... Cut and raised portion, 16...
...Keyhole, 17...Connecting screw, 18...Fixed plug, 19...Rotating plug, 20...Screw hole.

Claims (1)

[Scope of utility model registration request] An outer cylinder 1 having a pair of side holes 8, 8 arranged side by side in the length direction, and a lock body 2 housed and fixed in the front end of the outer cylinder 1.
, a semi-cylindrical inner cylinder 4 that is fitted and connected to the operating shaft 3 of the lock body 2 through the shaft hole 13 of the front end wall 12 and rotates within the outer cylinder 1; and the side hole 8 of the outer cylinder 1; The side edge 1 of the inner cylinder 4 is inserted into the inner cylinder 4 on the circumferential side of both ends.
A U-shaped hook rod 7 is provided with a cross-receiving groove 5 with which the inner cylinder 4 engages, and a sloped cam portion 6 is provided at the tip thereof, and a side edge portion 10 of the inner cylinder 4 appears in a part of the side hole 8. and a spring 9 that biases the inner cylinder 4 to rotate, and provides play between the shaft hole 13 and the operating shaft 3, so that when the operating shaft 3 is locked in the lock body 2, the A lock with a hook rod in which the inner cylinder 4 is independently rotated in the reverse direction by pushing the side edge part 10 of the inner cylinder with an inclined cam part 6.