JPS6222227Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a planar disc-shaped block incorporating a notched annular key attachment ring and a locking mechanism and a locking release mechanism for the notched portion of the ring. This invention relates to a new automatic lock type key chain which is connected by threading the keys in the form of a skewer.

[Problems to be solved by conventional techniques and ideas]

Conventionally, this type of key chain was made in 1977.
As seen in Japanese Patent No. 7293, there is a device that engages and releases the engagement between the main body and the ring by sliding a locking piece against a spring in the same plane as the ring and the main body.

In addition, as seen in Japanese Utility Model Application Publication No. 47-37292, there is a device that engages and releases the engagement between the case and the ring by sliding the presser against the spring in the same plane as the case and the ring. be.

However, in the former, the locking piece that automatically locks the notched ring and the main body slides by a spring in the same plane as the notched ring and the main body, and the latter does not have an automatic locking mechanism.

In contrast, in the present invention, instead of the automatic locking mechanism consisting of a locking piece and a spring that moves within the same plane relative to the missing ring and the main body, the mechanism moves in a direction perpendicular to the plane that includes the broken ring and the main body. By using a shaft cylinder with a built-in spring, the automatic lock can be released more easily and smoothly.

[Means for solving problems]

The gist of the present invention is that the front disk A has a shaft hole 1 and is provided with an arcuate groove 2 on the inner surface that contacts the outer periphery of the shaft hole 1, and that the shaft hole 1 can be entered and exited from the inside. A hole 11 is recessed to accommodate the automatic locking spring D from the inner end side, and a push button part 7, a circumferential collar 8 on the upper end side, an annular groove 9, and a circle on the lower end side are formed on the outer peripheral surface from the upper end side. A shaft cylinder C in which a circumferential flange 10 is sequentially formed, the arc-shaped groove 2 of the above-mentioned front side disk A, and a shaft cylinder C
a notched annular key attachment ring E that is slidably fitted into the annular groove 9 of each, and a recess 4 that supports the lower end of the shaft cylinder C and one end of the spring D on the inner side.
It consists of a back side disc B which is overlapped and connected to the front side disc A, and the restoring force of the spring D causes the shaft cylinder C in the shaft hole 1 to be moved so that the button part 7 on the upper end side thereof is on the front side. The disc A is locked at a position facing the outer surface thereof, and the circumferential collar 10 at the lower end of the shaft cylinder C is bitten and engaged with the key attachment/detachment notch 12 of the notched annular ring E, and the button part 7 is engaged. The key holder is characterized in that it can be pressed against the spring D to release the engagement between the circumferential collar 10 and the key attachment/detachment notch 12 of the notched annular ring E.

[Effect]

As described above, in the present invention, by simply pushing the push button part at the upper end of the barrel into the disc with your fingertips against the spring, the engagement between the key attachment/detachment notch of the ring and the circumferential flange at the lower end of the barrel is achieved. Since it employs an automatic lock release mechanism that can release the lock, it has the advantage that the key removal and installation operations are extremely simple.

Furthermore, since the upper surface of the lower end circumferential flange of the shaft cylinder is in sliding contact with the lower surface of the ring when the ring is unlocked, there is an advantage that the ring can slide smoothly within the disc.

Other features of the present invention are as follows.

The feature of this invention is that a notched annular key attachment ring is threaded through and connected to a disc-shaped block so that it can slide in the same plane, and there is a release inside the block that locks with the key attachment/detachment notch of the ring. This feature incorporates an automatic locking key fixing mechanism.

Another feature of the present invention is that the above-mentioned key fixing mechanism consists of a shaft cylinder that is slidably incorporated into a shaft hole that is perpendicular to the plane of the disc-shaped block and opens on one side. When the key is fixed, this shaft cylinder is pressed and locked by a spring force at a position where one end face faces the shaft hole opening of the disc-shaped block, and is also locked in the key attachment/detachment notch of the ring that positions the shaft cylinder inside the block. When the key is unlocked, the shaft cylinder is engaged with the key attaching/detaching notch of the ring by pushing in the end surface of the shaft cylinder exposed at the position facing the shaft hole opening with your fingertip or nail. This is to remove the .

As shown above, push in the exposed end surface of the shaft cylinder to release the engagement between the shaft cylinder and the ring's key attachment/removal notch, and shift the ring slightly in the same plane relative to the block to lock the ring. Since the attachment/detachment notch is removed from the engagement position with the barrel, the key attachment/detachment notch can be pulled out of the block by rotating the ring in the same plane even if the end face of the barrel is no longer pushed in. can.

Another feature of the present invention is that the disk-shaped block is divided into two parts, a front side disk and a back side plate, and a ring sliding mechanism, a shaft cylinder sliding mechanism, and a spring are incorporated between them, and the key holder can be assembled and each This made it easy and reliable to manufacture parts.

Other features of the present invention will be explained by the following examples.

As shown in Fig. 1, the disc-shaped block consists of a front disc A and a back disc B of the same shape. An arcuate groove 2 is provided in contact with the outer periphery,
Moreover, at least two screw holes 3 are provided on the inner surface side. On the other hand, the back side disc B is provided with a circular recess 4 at the center of its inner surface that matches the shaft hole 1 and forms a receiving part for supporting the shaft cylinder C and the spring D, and also matches the screw hole 3. A screw insertion hole 5 is bored.

As is clear from FIG. 2, the shaft hole 1 is provided with an inner peripheral flange 6 at a position close to the outer surface of the front disk A.

A circumferential collar 8 is provided on the outer periphery of the shaft cylinder C that is fitted in and out of the shaft hole 1 following the push button portion 7 on the tip side.
Next, circumferential flanges 10 are sequentially formed in the axial direction on the lower end side, separated by an annular groove 9 cut into the circumferential surface. As shown in FIG. 2, this shaft cylinder C has a spring housing hole 11 recessed from the lower end side of the circumferential collar 10, and a spring D is housed in the spring housing hole 11.

The notched annular key attachment ring E that is slidably fitted into the arcuate groove 2 has a notch 12 for key attachment/detachment, and the shaft cylinder C is inserted at a position where the notch 12 matches the shaft hole 1. The engagement with the notch portion 12 and the disengagement thereof are performed.

Therefore, assemble the above discs A and B, shaft cylinder C, spring D and ring E (Fig. 1), align the notch 12 of ring E with shaft hole 1, and connect both discs A and B with screw F. When fixed, it will be configured as shown in Figure 2.

In this state, the restoring force of the spring D locks the circumferential flange 8 on the upper end side of the shaft tube C to the inner circumferential flange 6 of the shaft hole 1, and the push button part 7 is flush with the outer surface of the disc A. The circumferential collar 10 on the other lower end side of the shaft cylinder C
is bitten and engaged with the notch 12 of the ring E.

Therefore, in this state, the ring E is engaged with the shaft cylinder C and is prevented from rotating, so that the key attached to the ring E is securely held as shown in FIG.

Next, when removing the key, push the push button part 7 of the shaft cylinder C into the shaft hole 1 against the spring D, and the engagement with the notch part 12 of the lower end side circumferential flange 10 is released, and the notch part 12 coincides with the annular groove 9, the ring E can freely rotate within the arcuate groove 2, and as shown in FIG.
B can be pulled out to the outside to attach and detach the key. Also, when operating in the opposite direction, the notch 12
When it reaches a position where it matches the shaft cylinder C, it is automatically locked by the restoring force of the spring D.

[Brief explanation of the drawing]

Figure 1 is an exploded explanatory view showing each part of the key chain of the present invention, Figure 2 is a sectional view of the key chain when the keys are fixed, Figure 3 is a plan view of Figure 2, and Figure 4 is the key of the key chain of the present invention. It is a top view at the time of attachment and detachment. A...Front side disk, B...Back side disk, C...Shaft tube, D...Spring, E...Notched annular ring for key attachment, 1...Shaft hole, 2...Circular groove, 4 …
... circular recess, 9 ... annular groove, 11 ... hole for housing spring, 12 ... notch for attaching and removing key.

Claims (1)

[Scope of utility model registration request] A front disk A having a shaft hole 1 and an arcuate groove 2 in contact with the outer periphery of the shaft hole 1 on the inner surface side, and a front disk A that is fitted into the shaft hole 1 so as to be able to enter and exit from the inside from the inside end side. A shaft having a recessed hole 11 for accommodating an automatic locking spring D, and having a push button portion 7, a circumferential collar 8 on the upper end, an annular groove 9, and a circumferential collar 10 on the lower end sequentially formed on the outer peripheral surface from the upper end side. Cylinder C and the above-mentioned front disk A
A notched annular key attachment ring E that is slidably fitted into the arcuate groove 2 of the cylinder C and the annular groove 9 of the shaft cylinder C.
and a back side disc B, which has a recess 4 on the inner surface side for supporting the lower end side of the shaft tube C and one end of the spring D, and is overlapped and connected to the front side disc A,
The restoring force of the spring D locks the barrel C in the shaft hole 1 at a position where the button part 7 on the upper end side faces the outer surface of the front disk A, and the circumference of the lower end of the barrel C. The collar 10 is engaged with the notch 12 for attaching and detaching the key of the notched annular ring E, and the button portion 7 is pushed against the spring D to attach and detach the key between the circumferential collar 10 and the notched annular ring E. A key holder characterized in that it is configured to be able to release the engagement with the notch 12.