JPS62543Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of a key chain.

[Conventional technology]

The applicant first inserted springs into the deep holes and horizontal holes of a key chain main body, which has a shallow hole and a deep hole on the top surface and a horizontal hole intersecting with the deep hole on the side surface, to correspond to the deep hole at the edge. A horizontally elongated locking member having a vertical hole, the lower part of which has a step-like recess in the opposite direction from the end edge, is inserted into the horizontal hole so that the deep hole corresponds to the vertical hole, and the horizontally long locking member is inserted into the shallow hole. One end of the curved rod is rotatably loosely fitted into the deep hole and has a cylindrical guide part and a locking part above and below the narrow diameter part. A keychain was proposed that was inserted into each hole and engaged with a locking member (Utility Model Application No. 57-76583), but with this keychain, it was not easy to attach or remove the curved rod from the main body of the keychain. Therefore, it may be inconvenient when repairing the key chain.

[Problems that the idea should solve]

The present invention was made to eliminate this inconvenience.In addition to the vertical hole into which the vertical shaft for automatic locking is inserted and the horizontal hole into which the horizontal shaft for automatic unlocking is inserted, there is also a horizontal hole adjacent to the vertical hole. Another vertical hole is provided through the vertical hole, and a pin that engages with the horizontal shaft is inserted into this vertical hole, and the spring for releasing the fixation of the key into the vertical hole and the vertical shaft are assembled and removed, and the key is inserted into the horizontal hole. The fixing and holding spring and the horizontal shaft can be easily and freely assembled and removed by attaching and detaching the above-mentioned pin to the vertical hole, thereby facilitating repair of the key chain.

[Means to solve the problem]

The gist of the present invention is to provide a notched circular block having a groove along the upper arcuate notch surface, a vertical hole opening into the groove, and a horizontal hole opening on one side and intersecting with the vertical hole; A vertical shaft for automatic locking with a small diameter part formed in the middle to be slidably inserted into the vertical hole is planted on the outer periphery of the ring that fits in the groove, and a notch for attaching and removing the key is provided adjacent to this vertical shaft. a notched annular key attachment ring, and a notch that is slidably inserted into the horizontal hole and into which the small diameter portion of the vertical shaft is slidably fitted, and a downward recess into which the lower end of the vertical shaft engages. a horizontal shaft whose tip forms a push button portion for automatic unlocking; a pin inserted into another vertical hole adjacent to the vertical hole that passes through the horizontal hole and engages with an upward recess of the horizontal shaft; A spring for fixing and holding the key inserted into the deep part of the horizontal hole and a spring for releasing the key fixing inserted into the deep part of the vertical hole are provided, and the spring is inserted into the left and right convex parts or concave parts adjacent to the lower surface of the horizontal shaft. By switching the engagement of the vertical axis of the ring, the key attachment ring is engaged and held in the concave groove of the circular block so that the notch for key removal enters, or this engagement is released and the notch for key removal is inserted. The present invention resides in a key holder characterized in that the key mounting ring floats above the concave groove and can be twisted to a key attachment/detachment position where the above-mentioned cutout circle is orthogonal to the block, about the vertical axis of the key attachment ring.

[Effect]

As mentioned above, the present invention has the following advantages in addition to making it easier to disassemble and assemble the key chain by separately providing another vertical hole and a pin, thereby facilitating repair.

In addition, in the present invention, the lower part of the notched annular key attachment ring is provided opposite to the groove provided along the arcuate notched surface of the upper part of the notched circular block. can be set at any location along the entire length of the block, and by providing this notch as close to the outside of the groove as possible, there is no risk of the key falling out of the notch even at the key removal position. There are no advantages.

In addition, the present invention uses a notched annular key attachment ring via a rotating shaft installed close to the notched part.
The present invention relates to a new type of automatic lock and automatic unlock type key chain that is connected to a notched circular block incorporating a locking mechanism for the shaft and a release mechanism therefor.

The features of the present invention basically consist of a key attachment ring and a cutout circular block that engages and holds the ring, and a vertical shaft for automatic locking that is planted close to the key attachment/detachment notch of the ring. By elastically switching and engaging the horizontal shaft built into the block in two stages within the same block, it is possible to automatically switch between locking and unlocking.

Another feature of the present invention is that when locked, the part of the ring that includes the notch for attaching and removing the key is engaged and held in the groove provided along the arcuate notch on the top surface of the block, and the ring and block rotate around the vertical axis. When the ring is unlocked, the ring floats on the groove and is held, allowing the ring and block to rotate in the torsional direction. As a result, both are twisted to a position where their planes are perpendicular to each other. If the key is attached, the key can be attached or removed through the notch in the ring that protrudes outside the surface of the block.

A further feature of the present invention is that the tip of the horizontal shaft built into the circular block forms the push button for automatic unlocking, and this push button is pressed against the key fixing spring built into the block (compressed). )
By pressing the button, the key fixing/holding function by the outer spring is released, and at the same time, the key fixing/releasing spring also housed in the block is restored, thereby automatically performing the above-mentioned unlocking operation. By pushing the locking vertical shaft into the (compression) block against the key release spring, the key release function by the spring is canceled and at the same time the key release spring is allowed to return to its original state. The lock operation is performed automatically.

〔Example〕

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

As shown in Fig. 1, the circular block A has an arcuate notch in its upper part, and a groove 1 is provided along this notch surface, and a vertical hole 2 opening in the center of the groove 1 in the length direction and a side periphery. A horizontal hole 3 that opens on the surface is provided. Further, springs 4 and 5 are installed inside the end of each of the vertical hole 2 and the horizontal hole 3, respectively.

The notched annular key attachment ring B has a vertical shaft 7 extending in the radial direction on the outer surface of the ring adjacent to the key attachment/detachment notch 6. A small diameter portion 9 is formed at the upper portion of the portion.

The horizontal axis C is formed by notching the upper surface of one of the short parts in a step shape following the push button part 10 to form an upward recess 11, and by cutting out the lower surface in steps across the intermediate part 12 to form a downward recess 13. However, at this time, the other side is left as a lower surface protrusion 14 without being cut out.
Further, a notch 15 is provided that extends from the other end surface to the intermediate portion 12 in the axial direction and also extends in the longitudinal direction.

The length of the small diameter portion 9 is equal to or slightly larger than the outer diameter of the convex portion 14 on the horizontal axis C, and the length in the axial direction of the downward concave portion 13 is equal to or slightly larger than the outer diameter of the convex portion 14 on the horizontal axis C. It is set slightly larger than the outer diameter of. Further, the width of the cut 15 is larger than the outer diameter of the small diameter portion 9 of the vertical shaft 7, but smaller than the outer diameter of the circumferential flange portion 8.

In addition, the circular block A has a groove 1 adjacent to the vertical hole 2.
A vertical hole 16 is provided through the horizontal hole 3, and a pin D is inserted into the vertical hole 16 so as to fit loosely into the upward recess 11 of the horizontal shaft C.

As shown by the arrow, when the vertical shaft 7 of the ring B is inserted into the vertical hole 2 under the compression of the spring 4 and the ring body is fitted into the groove 1, the small diameter portion 9 will just face the horizontal hole 3. Therefore, when the horizontal shaft C is inserted from the horizontal hole 3 in the direction of the arrow under compression of the spring 5, the small diameter portion 9 is inserted into the notch 15. Therefore, the right end side of the upward concave part 11 of the horizontal axis C is aligned with the vertical hole 16 at the position where the lower surface convex part of the horizontal axis C is exactly above the circumferential flange part 8 of the vertical axis 7. It is assembled as shown in FIG. 2 by driving the pin D into the recess 11 to the engagement depth. In this state, the right end of the notch 11 is elastically locked on the horizontal shaft C by the restoring pressure of the spring 5.
The tip push button part 10 of the block A is flush with or slightly protrudes from the outer peripheral surface of the block A, and the restoring pressure of the spring 4 pushes the circumferential flange part 8.
is elastically secured to the downward convex portion 14 of the horizontal axis C. In the state shown in FIG. 2, the main body of the ring B, including the notch 6 for attaching and removing the key, fits into the groove 1, and the flange 8 of the vertical axis 7 fits into the convex part 14 of the horizontal axis C. Due to the engagement, the ring B with the key attached is held fixedly in this position relative to the block A (locked state in FIG. 3).

Next, when attaching or detaching the key to the ring B, as shown in FIG. Since the engagement with the lower surface of the portion 14 is removed and the collar portion 8 comes to a position facing the recess 13, the restoring force of the spring 4 causes the collar portion 8 to immediately enter the recess 13, and at the same time, the ring B is also pushed up, and the notch 6
is held in a state floating outside the groove 1 (unlocked state). Therefore, the key can be attached or detached from the notch 6 by rotating the ring B in the direction of the arrow as shown in FIG.

On the other hand, it is only necessary to push down the ring B against the spring 4 to the position where it fits into the recess 1 to change the ring B from the unlocked state shown in FIG. 4 to the locked state shown in FIG.
As a result, the flange 8 comes out of the recess 13 and engages with the lower surface of the protrusion 14.

[Brief explanation of the drawing]

Fig. 1 is an exploded explanatory view of the key chain of the present invention, Fig. 2 is a sectional view showing the key chain of the present invention in the locked state, Fig. 3 is an external view of the same as above, and Fig. 4 is a sectional view of the key chain of the present invention in the unlocked state. , 5th
The figure is an external view of the key chain of the present invention when the key is attached and detached. A...Circular block, B...Key mounting ring, C...Horizontal shaft, D...Pin, 1...Concave groove, 2...
...Vertical hole, 3...Horizontal hole, 4, 5...Spring, 6
... Notch portion, 7 ... Vertical axis, 8 ... Flange portion, 9 ... Small diameter portion, 10 ... Push button portion, 13 ... Downward concave portion, 14 ... Lower surface convex portion, 15 ... Notch, 16 ...
...vertical hole.

Claims (1)

[Scope of utility model registration request] a notched circular block having a groove along the upper arcuate notch surface, a vertical hole opening into the groove, and a horizontal hole opening on one side and intersecting with the vertical hole; A notched annular key mounting ring having a vertical shaft for automatic locking with a small diameter portion formed in the middle thereof is planted on the outer periphery of the ring that fits into the groove, and has a notch for attaching and removing the key adjacent to the vertical shaft. , which is slidably inserted into the horizontal hole, has a notch into which the small diameter portion of the vertical shaft is slidably fitted, and a downward recess into which the lower end of the vertical shaft engages, and the tip has a pusher for automatic unlocking. a horizontal shaft forming a button portion; a pin that is inserted into another vertical hole adjacent to the vertical hole and inserted into the horizontal hole and engages with an upward recess of the horizontal shaft;
A spring for fixing and holding the key inserted into the deep part of the horizontal hole and a spring for releasing the key fixing inserted into the deep part of the vertical hole are provided, and the left and right convex parts or By switching the engagement of the vertical axis to the recess, the key attachment ring is engaged and held in the groove of the circular block so that the notch for removing the key fits therein, or by releasing this engagement, the key can be removed. A key holder characterized in that the cutout portion floats above the groove so that the key attachment ring can be twisted around its vertical axis to a key attachment/detachment position where the circular cutout is perpendicular to the block.