JP4427795B2 - Lock for wire lock etc. - Google Patents

Description

In the present invention, one end of a wire or chain is connected to a lock body, the other end is connected to a lock housing, and a plurality of locking rings are fitted into a cylindrical lock body. With regard to locks for wire locks, etc., that are provided with key protrusions that engage with engagement protrusions arranged on the lock ring to perform locking and unlocking operations, the unlocking position of each locking ring in the locked state is searched. The feature is that it is difficult to prevent unauthorized unlocking.

This type of lock lock ring with a plurality of locking projections on the inner periphery of each cylindrical lock body, and a key projection that engages each locking ring on one side of the lock housing. For example, Japanese Patent Application Laid-Open No. 2004-151867 discloses an earlier application of the applicant.

Japanese Utility Model Publication No. 63-25769 (see, for example, page 1 and FIG. 2)

The lock of the above-mentioned prior application has the advantage that the locking surface is not shown on the surface of the lock body unlike the normal character-aligned lock, so there is an advantage that the search effect is high, but it is inserted into the lock body in the locked state There is a drawback that in many cases, the lock housings are illegally unlocked by finding the position of the engagement protrusions provided on the inner peripheral surface of each lock ring by rotating the lock housing while pulling it.
From the above, the problem to be solved by the present invention is to make it difficult to find the position of the engagement protrusion provided on the inner peripheral surface of each locking ring and to prevent unauthorized unlocking more. It is in.

Therefore, in order to solve the above-mentioned problem, the present invention forms a cylindrical portion in a lock body that connects one end of a wire or a chain, and inserts a lock click plate that is fixed in a non-rotating manner in the cylindrical portion, and a lock rod. A rotary click ring having a hole as a center and fitted in a freely rotating manner is elastically pressed against each other and fitted coaxially with the rotary click ring. A plurality of locking rings each having an engagement protrusion having an angular difference in the rotation direction on the inner peripheral surface are rotatably fitted with a spacer ring interposed therebetween, and the opening of the cylindrical portion is inserted. The lid is closed with a cover plate having a key hole, and a lock rod inserted into the cylindrical portion of the lock body from the key hole is formed integrally with the lock rod body connecting the other end of the wire or chain. On the side along the length direction of the lock bowl, A wire provided with a key protrusion that engages with an insertion hole of the rolling click ring and each engaging protrusion of each locking ring, and rotates the locking click ring and each locking ring in the locking direction and the unlocking direction. In a lock for locking or the like, a protruding member that presses the locked casing from the inner end while being urged by a protruding spring at all times is fitted into the inner end of the cylindrical portion of the lock body. In addition, a lock for a wire lock or the like is provided in which an inner end face of the lid plate is provided with a convex portion that engages with the key protrusion and prevents the lock housing from rotating. is there.

The lock of the present invention configured as described above strongly presses the lock rod in the locked state from the inner end while the protruding member provided at the inner end of the cylindrical portion of the lock body is always urged by the protruding spring. Then, the key projection is engaged with the convex portion provided on the inner end surface of the cover plate, and the lock housing is prevented from rotating. Therefore, when unlocking, it is not possible to search without first pushing in the lock housing. The lock housing can be rotated by pushing the lock housing, but this increases the urging force of the spring so that the contact between the key projection and the engagement projection rotating in each locking ring is smooth. The click sound and its vibration can be detected, but the vibration due to the contact between the key protrusion and the engagement protrusion is very difficult to be transmitted to the lock body and the lock housing, making unauthorized unlocking difficult, Reliability for locking is improved.
As described above, the present invention solves the above-described problems.

A cylindrical portion is formed on the lock body connecting one end of the wire or chain.
In the cylindrical part of the lock body, the fixed click plate is fixed in a non-rotating manner, and a rotary click ring having a lock hole insertion hole in the center is rotatably fitted and elastically pressed against the fixed click plate. Fit.
A plurality of locking rings each having a key projection insertion hole and an engagement projection having an angular difference in the rotation direction with respect to the insertion hole on the inner peripheral surface are coaxially arranged with the rotation click ring. In addition, a spacer ring is interposed between each other, and the opening of the cylindrical portion is closed with a lid plate having a key hole.
On the other hand, the lock rod inserted into the cylindrical portion of the lock body from the key hole is integrally formed on the lock rod body connecting the other ends of the wire or the chain.
The rotation click ring and each locking ring are respectively engaged with the insertion hole of the rotation click ring and the engagement protrusions of each locking ring on the side surface along the length direction of the lock rod, and the locking direction and the unlocking direction of the rotation click ring. And a key projection to be rotated.
At the inner end portion of the cylindrical portion of the lock body, a protruding member that presses the lock rod in the locked state from the inner end portion while being constantly urged by a protruding spring is fitted,
A convex portion is provided on the inner end surface of the lid plate so as to engage with the key protrusion and to stop the lock housing from rotating.
A lock for a wire lock or the like having the above structure.

Embodiments of the present invention will be described below with reference to the drawings.
1 is an exploded perspective view and an assembled perspective view of a lock according to the present invention, FIG. 2 is a side view of the lock according to the present invention, FIG. 3 is a side view illustrating a locked state, and FIG. 4 is an unlocked state. 5 is a longitudinal side view showing the locked state, FIG. 6 is an inner end view and a longitudinal sectional view of the cover plate, FIG. 7 is a front view of the locking ring 10a, and FIG. 8 is a view of the locking ring 10b. It is a front view.

In the figure, 1 is a lock body having a cylindrical portion 3 which is integrally formed with a bifurcated bearing portion 2 at one end (the left end in the figure) and an opening at the other end, and 4 is a coil spring 5 at the inner end of the cylindrical portion 3. And a fixed click plate 7 that is fixed to the inner surface of the cylindrical portion 3 in a non-rotating manner and has a click protrusion 6 disposed on the peripheral edge of the end surface, and includes a click recess 8 corresponding to the click protrusion 6 on the peripheral edge, A rotary click ring 10a, 10b, which has a lock rod insertion hole 9 in the center and is rotatably fitted to the cylindrical portion 3 and elastically presses against the fixed click plate 6, is rotatably attached to the cylindrical portion 3. The locking ring to be fitted, 11 is a spacer ring having a non-rotating projection 12 and interposed between the rings, and 13 is a count setting for closing the opening of the cylindrical portion 3 with a key hole 14 at the center. It is a lid plate.

The rotary click ring 7 and the locking rings 10a, 10b are provided with an insertion hole 15 communicating with the key hole 14 on one side of the insertion hole 9, and the locking rings 10a, 10b are respectively circumferentially provided on the inner peripheral surface from the insertion hole 15. An engagement protrusion 16 having an angular difference in direction is provided (see FIGS. 7 and 8). The fixed click plate 6, the spacer ring 11, and the lid plate 13 are fitted non-rotatingly by engaging the protrusions 12 and 17 provided on the outer periphery with the rotation-preventing groove 18 on the inner peripheral surface of the cylindrical portion 3. .

As shown in FIG. 5, a columnar block 20 having a spring holding hole 19 penetrating in the center is fixed to the inner end of the cylindrical portion 3 of the lock body 1 together with the spring receiving plate 21. It has a protruding member 23 urged by a protruding spring 22 fitted therein, and constantly urges the inner end portion of the lock rod 24 in the locked state in the cylindrical portion 3 in the protruding direction. .

As shown in FIG. 1, the lock housing 25 for connecting the other end of the wire or chain has a lock rod 24 inserted into the cylindrical portion 3 of the lock body 1 from the key hole 14 at one end. Three key projections 26 corresponding to the locking rings 10a and 10b and the rotary click ring 7 are provided on one side surface in the length direction.

On the other hand, as shown in FIG. 6, the cover plate 13 for setting the count which closes the opening of the cylindrical portion 3 is provided with a convex portion 13 'corresponding to the count on the inner end face, The key projection 26 of the lock rod 24 that is urged and retracted by the protruding member 23 is fitted between the convex portions 13 ′ to prevent the lock rod body 25 in the locked state from rotating.

In this embodiment, the lock housing 25 is provided on the outer periphery of the block 28 by fitting the joint block 28 into the hollow chamber 27 opened on one end face and preventing the block 28 from being removed by the pin 29. The cover member 31 is externally fitted through the recess 30, and the outer end member 33 integrally provided with the bearing portion 32 formed in a bifurcated manner as in the case of the lock body is opened on one side of the joint block 28 side. The inner circumferential groove 34 and the inner end flange portion 35 on the outer end member 33 side are connected together by fitting.

A holding metal fitting 37 supported by a hinge shaft 36 is attached to each of bearing portions 2 and 32 integrally formed on the outer ends of the lock main body 1 and the lock housing 25, respectively, and the metal fitting 37 and the cylindrical cover 38 are attached to each other. The both ends of a wire or chain not shown in the figure are connected through and fixed.

As shown in FIG. 5, the inner end of the lock rod 24 in the locked state is a protruding member 23 that is constantly urged by the protruding spring 22 at the inner end of the cylindrical portion 3 of the lock body 1 as described above. Due to this compression, the front side key projection 26 is strongly biased toward the opening side, and is engaged with the convex portion 13 on the inner end face of the cover plate 13 and held non-rotatably.

In the figure, 39 is one sign provided on the lip of the opening of the cylindrical part 3 of the lock body 1, and 40 is the other sign provided on the edge of the lock housing 25.
The lock according to the present invention is in a locked state and is rotated one or more times while pressing the lock housing 25 pressed against the protruding member 23 against the cylindrical portion 3 side, so that the sign portion 40 is moved to the cylindrical portion 3 side. In this embodiment, 6 locks and 6 locks on the left and 3 locks on the right are counted while counting the click sound and vibration generated by the fixed click plate 4 and the rotary click ring 7. By rotating 25, the engaging protrusion 16 and the key protrusion 26 of the locking rings 10a and 10b can be unlocked in alignment with the unlocking position.

With the lock according to the present invention having the above-described configuration, the lock housing 25 in the locked state is biased by the protruding member 23 so that the lock housing 25 is slightly spaced from the lock body 1 as shown in FIG. Is always retreating.
When the lock housing 25 is retracted, as described above, the key protrusion 26 of the lock housing 24 is engaged with the convex portion 13 ′ on the inner end surface of the lid plate 13. Since the housing 25 does not rotate, no clicking sound and vibration are generated.
Further, if the lock rod body 25 is pushed in in an attempt to unlock it, the lock rod 24 can be rotated, and a click sound and vibration are generated as the lock rod 24 rotates. Since the urging force is increased, the contact position between the key protrusion 26 and the engagement protrusion 16 of the locking ring cannot be sensed.

The lock of the present invention configured as described above and used as described above has an extremely high prevention effect against unauthorized unlocking operation compared to this type of conventional lock, and can obtain a highly reliable lock. It is useful because it is easy to manufacture.

FIG. 1 is an exploded perspective view and an assembled perspective view of a lock according to the present invention. FIG. 2 is a side view of the lock according to the present invention. FIG. 3 is a side view for explaining the locked state. FIG. 4 is an exploded side view of the unlocked state. FIG. 5 is a longitudinal side view showing a locked state. It is the inner end face figure and longitudinal cross-sectional view of a cover board. It is a front view of the locking ring 10a. It is a front view of the locking ring 10b.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lock body 2 Bearing part 3 Cylindrical part 4 Fixed click plate 5 Coil spring 6 Click protrusion 7 Rotation click ring 8 Click recessed part 9 Lock hole insertion hole 10a, 10b Locking ring 11 Spacer ring 12 Anti-rotation protrusion 13 Cover plate (13 ' Convex part)
DESCRIPTION OF SYMBOLS 14 Key hole 15 Insertion hole 16 Engagement protrusion 17 Protrusion 18 Non-rotating groove 19 Spring holding hole 20 Block 21 Spring receiving plate 22 Extrusion spring 23 Extruding member 24 Locking rod 25 Locking body 26 Key protrusion 27 Hollow chamber 28 Joint block 29 Pin 30 Recessed part 31 Cover member 32 Bearing part 33 Outer end member 34 Inner peripheral groove 35 Flange part 36 Hinge shaft 37 Holding bracket 38 Cover 39, 40 Matching part

Claims (1)

A cylindrical part is formed in the lock body that connects one end of the wire or chain, and a fixed click plate that is fixed non-rotatably in the cylindrical part, and a rotary click that fits in a rotatable manner with an insertion hole for the lock The ring is elastically pressed against each other and fitted, and an insertion hole for the key protrusion and an engagement protrusion having an angular difference in the rotation direction with respect to the insertion hole are arranged on the inner circumference on the same axis as the rotation click ring. While the plurality of locking rings provided on the surface are respectively rotatable and fitted with a spacer ring interposed therebetween, the opening of the cylindrical part is closed with a cover plate having a key hole, A lock rod inserted into the cylindrical portion of the lock body from the key hole is integrally formed on the lock rod body connecting the other end of the wire or chain, and the rotary click is formed on the side surface along the length direction of the lock rod. Ring insertion hole and each locking ring In the lock for a chain lock or the like provided with the above-described rotary click ring and a key protrusion for rotating each locking ring in the locking direction and the unlocking direction, respectively, the cylindrical portion of the lock body. A protruding member that presses the lock housing in a locked state from the inner end while being always urged by a protruding spring is fitted to the inner end of the cover plate, and the key projection and the inner protrusion of the lid plate A lock for a wire lock or the like, characterized in that a convex portion is provided which engages and locks the lock housing in an impossible manner.

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