JPH034699Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a joint lock whose purpose is to connect two connecting ends substantially on the same straight line.

(Approximate issues with conventional technology) When connecting both ends of a conventional chain, etc.
Normally, two chain rings are fitted to the same lock lever, but in such a case, the lock case is placed at right angles to the direction of tension, and the tensile force applied to the chain spreads the lock lever in the direction. There was a problem that not only did it act as stress, but it also did not work as part of the chain.

(Means for Solving the Problem) However, this invention symmetrically attaches two locking rods to be engaged with a lockbox at two ends of a chain or other parts to be connected, and simultaneously unlocks or unlocks the locking rods. The above-mentioned conventional problems were solved by locking the door.

That is, in this invention, the base rod 2a of the U-shaped main lock rod 2 is rotatably and axially slidably penetrated on one side of the lock case 1, and the end of the latch rod 2b of the main lock rod 2 is locked. A locking member is attached to the base rod 2a of the main lock rod so as to face the locking hole 3 provided on one side of the lock case 1, and a U locking member is provided on the other side of the lock case 1.
A base rod 7a of a letter-shaped auxiliary lock rod 7 is rotatably locked, and a locking recess 7d into which the protrusion 2c of the main lock rod 2 fits is provided at the end of the locking rod 7c of the auxiliary lock rod 7. It is a joint lock. Further, the lock member is a combination lock or a key lock.

(Function) This device is structured so that when the main lock rod is locked, it is engaged with the auxiliary lock rod, so when the main lock rod is unlocked, the auxiliary lock rod is also unlocked. The main lock lever can be locked or unlocked by matching letters or using a key.

(Example) That is, to explain this invention in terms of an example, the base rod 2a of the U-shaped main lock rod 2 is rotatably penetrated on one side of the lock case 1, and the end of the latch rod 2b is locked. It is made to face the latching hole 3 on one side of the box 1. The base rod 2a passes through the center portions of the letter wheels 4, 4a, 4b, and forms a locking structure in a conventional manner. For example, protrusions 5, 5a, 5b may be provided on the side wall of the penetrating portion of the base rod 2a, and grooves 6, 6a, 6b passing through the protrusions 5, 5a, 5b may be provided at one location in each of the letter rings 4, 4a, 4b. , a combination of letters. In addition, the base rod 7a of the U-shaped auxiliary lock rod 7 is inserted into the other side of the lock case 1, and the pin 8
The spring 10 is rotatably hooked onto the lock case 1, and a spring 10 is interposed between the end surface 7b of the base rod 7a and the hole bottom 9a of the hole 9 for the base rod.
Both ends of the auxiliary rod 7 are latched to the protruding piece 11 of the end face 7b and the protruding piece 12 of the hole bottom 9a, and the latching rod 7c of the auxiliary rod 7 is biased to automatically rotate to the latching position.

Further, a locking recess 7d is provided on the end face of the locking rod 7c, into which the end surface protrusion 2c of the main lock rod 2 is inserted and latched. Semicircular guide pieces 14, 14a, 14 protruding from the lock case wall to restrict the degree of rotation of 7c.
b is the character ring 4, 4a, 4b outer wall groove 15, 15a,
a small ball that is hooked to 15b and restricts its rotation, 16;
16a and 16b are springs that press the small balls against the letter wheel.

The embodiment shown in FIG. 3 is a case where a key lock is used, and 17 is a lock case, 18 is a main lock lever, 19 is an auxiliary lock lever, and 20 is a keyhole, which includes the main lock lever 18 and the auxiliary lock lever. The locking structure between the lock rod and 19 is the same as in the previous embodiment.

In order to connect the rings at both ends of the chain using the lock of the above embodiment, after aligning the letter rings 4, 4a, 4b to a predetermined number, unlock the lock, open each lock lever 2, 7, and connect the chain. Both end rings 21a, 21b of the main lock lever 2
and the auxiliary locking rod 7, and then pushing the main locking rod 2 in the direction of the arrow 22, the latch rod 2b of the main locking rod 2
is engaged with the latching hole 3 of the lock case 1, and the base rod 2a
The end protrusions 2c of the auxiliary locking rod 7 are inserted into the end latching recesses 7d of the latching rod 7c and latched therein. If the letter wheel is then rotated, the main lock lever 2 becomes immovable and the auxiliary lock lever 7 can also be locked together. In the above, the locking rod 7c of the auxiliary locking rod 7 is always urged by the spring 10 to automatically return to the guide piece 13 side and is automatically brought into contact with the guide piece 13, so that the base rod 2a is not attached to the lock case. When pushed in, the lock can be automatically and correctly locked without fear of the protrusion 2c of the base rod 2a coming off from the locking recess 7d.

In the embodiment described above, a combination lock and a key lock have been described, but there are no restrictions on the locking method, and any known method can be used. In short, it is sufficient that the lock rods are detachably attached to one side wall and the other side wall of the lock case.

(Effects of the invention) That is, according to this invention, the lock rods are attached to both side walls of the lock case so that they can be unlocked, so when connecting and locking the two members, the lock rods can be placed parallel to the tensile force applied to the two members. effective. Furthermore, since the main lock lever is mutually engaged with the auxiliary lock lever by sliding in the axial direction, there is an effect that the entire lock can be locked or unlocked with one locking member.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of this invention, FIG. 2 is a sectional view, and FIG. 3 is a perspective view of another embodiment. 1...Lock case, 2...Main lock rod, 3...Latching hole,
4, 4a, 4b...Character wheel, 7...Auxiliary lock lever, 1
7...Lock case, 18...Main lock rod, 19...Auxiliary lock rod.

Claims (1)

[Scope of claims for utility model registration] 1. Base rod 2a of U-shaped main lock rod 2 on one side of lock case 1
The main lock lever 2
The end of the locking rod 2b is opposed to the locking hole 3 provided on one side of the lock case 1, a locking member is attached to the base rod 2a of the main lock rod 2, and the locking member is attached to the base rod 2a of the main lock rod 2, and The base rod 7a of the U-shaped auxiliary lock rod 7 is rotatably hung on the
A joint lock in which a locking recess 7d is provided at the locking rod 7c end of the auxiliary lock rod 7 into which a projection 2c provided at the base rod 2a end of the main lock rod 2 is fitted. 2. The joint lock according to claim 1 of the utility model registration claim, in which the locking member is a combination lock. 3. The joint lock according to claim 1 of the utility model registration claim, in which the locking member is a key lock.