JP4048136B2 - Cylinder lock click mechanism - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a click mechanism for a cylinder lock (hereinafter simply referred to as a click mechanism), and more particularly to a click mechanism that can be applied to a small cylinder lock and has a simple structure.
[0002]
[Prior art]
When the cylinder lock is locked and unlocked with a combined key, if the click device is operated at the locking angle position or the unlocking angle position of the inner cylinder to sense a clicking feeling, a reliable operation feeling is obtained, which is convenient.
[0003]
On the other hand, there are various types of cylinder locks, such as lever tumbler locks, pin tumbler locks, disc tumbler locks, etc., but in principle, only the lever tumbler locks produce a click feeling naturally. Must have a separate click mechanism.
[0004]
In this click mechanism, for example, a click hole is formed in the front end portion of the outer cylinder of the cylinder lock in a radial direction, and a click ball, for example, a click spring by a compression coil spring and a click hole are formed in this click hole in order from the inside. The lid member that closes the opening on the outside is filled.
[0005]
Correspondingly, a concave portion into which the click ball falls is formed on an outer peripheral surface of the key guide of the inner cylinder at a predetermined angular position, and the click ball falls into the concave portion at a predetermined angular position of the inner cylinder. This makes it possible to present a click feeling.
[0006]
[Problems to be solved by the invention]
The above-described conventional click mechanism has a relatively complicated structure and still has room for improvement, such as being difficult to incorporate into a cylinder lock having a small size such as a lock of a desk drawer.
[0007]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a click mechanism that can be applied to a small cylinder lock and has a simple structure.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the outer cylinder front end opening of the cylinder lock is reduced in diameter to form a stepped portion, while the inner cylinder is formed into a key guide and a tumbler support portion at the front end. Separately , the key guide is supported and guided so that it can rotate independently of the tumbler support portion, and when the key is inserted into the key hole, the key guide and the tumbler support portion are integrally connected via the key. In addition, the key guide is formed with a small-diameter portion that fits with the reduced diameter portion of the outer cylinder, and a large-diameter portion that has the same diameter as the tumbler support portion, and at least one click is formed on the front end surface of the large-diameter portion of the key guide While the convex portion is protruded, a click concave portion is formed in the outer cylinder step portion slidably contacting the front end surface of the large diameter portion of the key guide, and on the other hand, the key guide is urged forward by a wave washer.
[0009]
According to a second aspect of the present invention, the corrugated washer is elastically mounted between the key guide and the tumbler support portion.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes an outer cylinder of a cylinder lock. In this case, the cylinder lock may be any type of cylinder lock such as a pin cylinder lock, a lever tumbler cylinder lock, or a disk tumbler cylinder lock.
[0011]
The opening at the front end (left end in FIG. 1) of the outer cylinder 1 is reduced in diameter, that is, has a small diameter, and therefore a step 2 is formed inside the front end of the outer cylinder 1.
[0012]
On the other hand, in the normal cylinder lock, the key guide and the tumbler support portion of the inner cylinder are integrally coupled. However, in the present invention, as shown in FIG. 2, the key guide 3 and the tumbler support portion 4 are separated. ing.
[0013]
As shown in FIGS. 2 and 3, the key guide 3 is formed with a small diameter portion 3 a that fits into a reduced diameter portion of the outer cylinder, and a large diameter portion 3 b that has the same diameter as the tumbler support portion 4.
[0014]
As shown in FIG. 3, at least one click convex portion 5 protrudes from the front end surface of the large diameter portion 3b.
[0015]
Correspondingly, as shown in FIG. 1, a click recess 6 that engages with the click protrusion 5 is formed in the outer cylinder step portion that is in sliding contact with the front end surface of the large-diameter portion of the key guide.
[0016]
The click protrusion 5 can be easily formed by normal injection molding, and the click recess 6 can be easily formed by drilling.
[0017]
Needless to say, the click convex portion 5 and the concave portion 6 are in the same position in the outer cylinder radial direction, and both are mutually in the locking angle position and the unlocking angle position of the cylinder lock. It is assumed that the formation positions of both are determined so as to engage and generate a click feeling.
[0018]
As shown in FIG. 2, each component of the click mechanism according to the embodiment of the present invention includes an inner cylinder portion of the outer cylinder 1 in order from its front end, a key guide 3, a known wave washer 7, For example, the key guide 3 is supported and guided so as to be rotatable independently of the tumbler support portion 4 by a presser plate 8 of a shallow cup lock and a retaining ring 9 such as a C ring.
[0019]
In addition, after this, the tumbler support portion 4 is filled in the outer cylinder, and the inner cylinder is prevented from coming off by a retaining ring 9 such as an E-ring, and the cylinder lock is assembled.
[0020]
When the key lock 11 (see FIG. 2) is inserted into the key hole, the cylinder lock incorporating the click mechanism according to the embodiment of the present invention configured as described above is configured to use the key guide 3 and the tumbler via the key lock 11. Since the support portion 4 is integrally connected, its operation as a cylinder lock is not different from the conventional one in which the key guide and the tumbler support portion are integrally connected.
[0021]
On the other hand, the elastic force of the wave washer 7 acts in a direction to widen the gap between the key guide 3 and the presser plate 8, so that the key guide 3 is slidably contacted with the step 2 of the outer cylinder. For example, at the locking / unlocking angle position, the click convex portion 5 of the key guide 3 falls into the click concave portion 6 of the outer cylinder step portion and engages with it, and at this time, a finger feels a click feeling.
[0022]
The present invention is not limited to the illustrated embodiment of the present invention, and various modifications can be made. For example, in the illustrated embodiment, the key guide and the corrugated washer are used by being sandwiched between the fixed outer cylinder step and the presser plate 8, but in short, the corrugated washer can exert elasticity on the key guide. If there is, it is not necessary to provide a presser plate.
[0023]
【The invention's effect】
As is apparent from the above description, the present invention normally separates the integral key guide and the tumbler support portion in the axial direction, and mounts a corrugated washer between them, and the front end of the large-diameter portion of the key guide. Since the click convex portion is formed on the surface and the click concave portion is formed on the outer cylinder step portion, and the click mechanism is constituted by these, a click mechanism with a completely new configuration can be obtained.
[0024]
In addition, when the key guide or tumbler support portion of the inner cylinder is rotated, the two are always connected together via a combined key and do not rotate independently, so the inner cylinder is connected to the key guide and the tumbler support portion. Even if separated, there are various effects such as no adverse effect on the operation of the cylinder lock.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an outer cylinder.
FIG. 2 is a longitudinal sectional view of a cylinder lock incorporating a click mechanism according to one embodiment of the present invention.
FIG. 3 is a side view of a key guide.
[Explanation of symbols]
1 outer cylinder 2 step 3 key guide 4 tumbler support 5 click convex 6 click concave 7 corrugated washer 8 presser plate 9 retaining ring 11 key lock

Claims (2)

The outer cylinder front end opening of the cylinder lock is reduced in diameter to form a stepped portion, while the inner cylinder is separated into a front end key guide and a tumbler support portion, and the key guide can be rotated independently of the tumbler support portion. When the key is inserted into the key hole, the key guide and the tumbler support are integrally connected via the key, and the key guide is fitted with the reduced diameter portion of the outer cylinder. Forming a small diameter portion and a large diameter portion having the same diameter as the tumbler support portion, and projecting at least one click convex portion on the front end surface of the large diameter portion of the key guide; A click mechanism for a cylinder lock, wherein a click recess is formed in a stepped outer cylinder step portion, and the key guide is biased forward by a wave washer.   2. A click mechanism for a cylinder lock according to claim 1, wherein said corrugated washer is elastically mounted between a key guide and a tumbler support portion.

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