JPH0239018Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention relates to a simple lock that is attached to furniture such as a bookshelf. Specifically, when assembling the simple lock, the lock rod is inserted into the lock receiver. This invention relates to a simple lock that can be easily and quickly assembled by one-touch operation.

(Prior Art) Conventionally, as a device for easily locking and unlocking movable shelves and doors of furniture such as bookshelves, locking devices for movable shelves have been disclosed in Japanese Utility Model Application No. 58-126739 and Japanese Utility Model Application No. 57-17533. Proposed.

In these devices, a mantle or lock case is installed on the upper plate of the movable shelf, a spindle with a knob on the outer end is inserted into the mantle or the lock case, and the tip of the spindle is attached to the top of the furniture. The movable shelf was locked by engaging with a guide groove provided on a plate or the like.

As the above-mentioned spindle fixing means, the former one is provided with a knob that engages and disengages from a concave groove provided on the inner peripheral surface of the mantle via a spring into the hole of the spindle, The spindle is fixed when the knob engages with the groove, and becomes free to move when the knob is disengaged from the groove.

Furthermore, in the latter case, the same operation as described above is performed by engaging and disengaging a check groove and a semicircular groove provided in the spindle with a ring-shaped spring provided in a chord hole of a concave groove in the lock case. It can be done.

(Problem to be Solved by the Invention) In the former case, the groove in the sleeve that engages with the knob of the spindle is provided only when the spindle unlocks the lock. However, there is a drawback that the holding force of the spindle is weakened due to wear of the tip of the knob or the inner circumferential surface of the sleeve, and when the lock is locked, the spindle naturally falls and loses its ability to fix the movable shelf.

Further, the knob 20, as shown in FIG. 3b,
Since it is attached to the hole 22 of the spindle 21 via a spring, when inserting the spindle 21 into the cannula 23 and pushing the knob 20 into the inner surface of the cannula 23, press the knob 20 with the tip of your finger. Press against the spring and do not protrude beyond the spindle surface 24, that is, as shown in the figure, the inner end 2
Careful and delicate manual work is required to avoid hitting the 5th point, and if you loosen your fingertips even a little,
The cannula 2 protrudes from the spindle surface 24 due to the spring.
3, and in the worst case, the knob 20 will come off from the tip and fly out of the hole 22 due to the force of the spring, and this operation will have to be repeated many times each time. However, the workability of the assembly has deteriorated significantly, making it impossible to hope for mass production.As the work requires constant strong force on the fingertips, doing this assembly work for a long time places a large labor burden on the workers, and increases labor costs. As prices rise, product costs will rise.

In addition, in the latter case, a check groove and a semicircular groove provided on the spindle are engaged with and disengaged from a ring-shaped spring provided in a concave groove in the lock case, so that the lock case can be locked and unlocked. However, the coiled spring must always have a strong centripetal spring force, and over time, the spindle may be held in the groove due to play etc. When this occurs, the locking force to the check groove or semicircular groove is lost, and the spindle falls off as in the former case described above.

Therefore, in the metal processing and manufacturing industries, there has been a strong demand for a simple lock that solves the various problems mentioned above.

The present invention was developed in consideration of the above-mentioned needs, and the purpose of the present invention is to provide a simple lock that can be assembled easily and quickly by one-touch operation when the lock rod is inserted into the lock receiver when assembling the simple lock. It is said that

(Means for Solving the Problems) The means of the present invention for achieving the above-mentioned object is as follows: A lock having a knob at one end in the longitudinal direction, and this lock being slidably inserted into the lock. a lock receiver; a stop protrusion that is removably fitted into a recess provided in an intermediate portion of the lock rod and is constantly urged outward by a spring; A simple lock comprising a first locking groove and a second locking groove that are engaged with the locking protrusion when locking and unlocking, respectively, the opening on the lock rod insertion side of the lock rod receiver; a beveled edge guide having an inwardly inclined surface around the edge; and an inner groove edge of the protrusion when the lock lever is inserted in the first locking groove of the lock lever receiver. The simple lock is provided with a slanted edge guide having a sloping surface facing toward the periphery thereof, and a sliding edge attached to the outer edge of the protrusion and abutting against the slanted edge guide and the slanted edge guide.

(Function) The present invention achieves the following functions by virtue of the above-described configuration.

When assembling and using the simple lock, insert the lock lever with the stopper fitted into the recessed part in the middle into the lock receiver through the spring, and then press the upper edge of the stopper with the tip of your finger. However, when the sliding edge of the stopper is brought into contact with the oblique edge guide provided on the opening edge of the lock lever receiver while being pushed into the recess, the stopper is not completely buried in the recess, i.e. , as shown by the reference numeral h in Fig. 3a, the lock can be engaged even if it is slightly protruding from the surface of the lock, and if the lock is pushed further in this state, the stop protrusion will be released as the lock is inserted. As the sliding edge moves along the beveled edge guide, it gradually descends and is finally inserted into the receiving cylinder while being buried in the recess.

When the locking protrusion reaches the first locking groove of the receiving cylinder, the locking protrusion instantly engages with the first locking groove due to the elasticity of the spring and is held in this position,
Forms a simple lock that can be locked and unlocked.

Further, when the lock rod is further inserted into the first locking groove, the sliding edge of the locking protrusion comes into contact with the inclined edge guide of the first locking edge, and the locking protrusion resists the spring while being guided by this guide. Then, it gradually descends, and finally moves within the receiving cylinder while being buried in the recess.

As the locking protrusion moves, it reaches the second locking groove, and again, due to the elasticity of the spring, the locking protrusion engages with the second locking groove at once and is held in this position. , forms a simple lock that can be locked and unlocked.

The sliding edges of the stop protrusion contact the beveled edge guide and the beveled edge guide to guide the downward and upward movement of the stop protrusion, so that the stop protrusion moves smoothly.

(Example) Next, an example of a simple lock according to the present invention will be described based on the drawings.

In each of the drawings, A is a simple lock, which basically consists of a lock rod 1 and a lock receiver 3.

The lock rod 1 has a round rod shape, and is provided with a protruding knob portion 2 at one end in the longitudinal direction.

The lock rod receiver 3 is for slidably inserting the lock rod 1, and is provided on its outer periphery with unevenness 6 having a serrated cross section to prevent it from falling off from the attachment part 5 to the furniture 4.

7 is a stopper fitted in the middle part of the lock rod 1;
It is fitted into a recess 8 provided in the middle of the lock rod 1 via a spring 9 so as to be freely protrusive and retractable, and has a sliding edge 7a attached to the outer edge.

Note that although the drawing shows a protrusion with a flange, a protrusion with a spherical shape as a whole may be used.

Reference numerals 10 and 11 denote a first locking groove and a second locking groove of a stopper carved on the inner surface of the lock receiver 3, which are provided at a predetermined interval, respectively. The other 11 is in the position where the child 7 is engaged, and the other 11 is in the locking position.
A stop protrusion 7 is provided at an engaging position to prevent the lock rod 1 from coming off.

Reference numeral 12 denotes a beveled edge guide formed on one opening edge of the lock lever receiver 3, that is, the upper edge in FIGS. When inserting the lock rod 1 into the lock receiver 3, while pressing the stop protrusion 7 with the tip of the finger A, guide the sliding edge 7a of the stop protrusion 7 along this beveled edge guide 12, When the lock rod is pushed in as it is, it is fitted into the receiving tube 3 and the stop protrusion 7 is prevented from popping out. Even if the projection 7 is not completely buried, this beveled edge guide 1
2 is engaged with the sliding edge 7a.

Reference numeral 13 denotes an inclined edge guide for guiding the protrusion and retraction of the locking protrusion 7 formed in the first locking groove 10, which is tilted inward in a centripetal manner and is slid from the unlocked state of the lock rod 1. When locking is performed, the sliding edge 7a of the stopper 7 protruding from the recess 8 is guided along this and moved so as to be buried in the recess 8.

Conversely, when unlocking from a locked state, the lock lever 1
When sliding, the stop protrusion 7 of the recess 8 is moved along the sliding edge 7a to the guide 13, and the first locking groove 1 is moved.
Guide to 0.

14 is a keyhole provided on the main body 15 side of the furniture 4.

(Effects of the invention) The simple lock of the present invention constructed as described above has the feature that when assembling the simple lock, when inserting the lock into the lock receiver, the stop protrusion fitted into the lock can be pressed with a finger. While
If the sliding edge of the locking protrusion corresponds to the beveled edge guide of the lock lever receiver, even if the toe comes off the locking protrusion, the locking protrusion will be reliably held in its position by the beveled edge guide.
A spring installed in the recess prevents the protrusion from jumping out, and the sliding edge of the locking protrusion is guided by the beveled edge guide, allowing it to be smoothly buried in the recess of the lock rod, and to be inserted into the lock receiver cylinder. Since the parts are inserted into each other, the assembly can be easily carried out in one go without failure, so work efficiency is improved and a large quantity of assemblies can be carried out in a short period of time.

Furthermore, even if the above-mentioned stop protrusion is not completely buried in the recess of the lock lever, that is, in a state where it protrudes from the lock face, the sliding edge contacts the beveled edge guide, so that the stop protrusion No more force than necessary is applied to the presser with the fingers, and no labor burden is placed on the worker even during continuous mass production.

The groove edge of the first locking groove that engages the locking protrusion is provided with an inclined edge guide for guiding the protrusion and retraction that the sliding edge of the locking protrusion engages with, so that the lock lever can be slid and engaged. When locking and unlocking is performed by engaging and disengaging from the stop groove, the stop protrusion smoothly protrudes and retracts from within the recess due to the engagement between the sliding edge and the beveled edge guide, making the locking and unlocking operations even easier. can be done.

It has special effects such as:

[Brief explanation of drawings]

FIG. 1 is an enlarged perspective view showing an embodiment of the simple lock according to the present invention. Figure 2 is a partially enlarged vertical front view of the same as above. FIG. 3 is an explanatory diagram showing a state in which the lock lever is inserted into the receiver. Figures 3a and 3b are enlarged explanatory views of the same as above, and the third
Figure a shows an example according to the present application, and Figure 3b shows a conventional example. FIG. 4 is a front view of the state in use. Fifth
The figure is a partially longitudinal front view of the same as above when unlocked. FIG. 6 is a partially vertical front view of the same as above when the door is locked. In the figure, 2 is a knob, 1 is a lock rod, 3 is a lock receiver, 8 is a recess, 9 is a spring, 7 is a stopper, and 10
is the first locking groove, 11 is the second locking groove, A is the simple lock,
12 is a beveled edge guide, 13 is a beveled edge guide, and 7a is a sliding edge.

Claims (1)

[Scope of utility model registration request] A lock rod having a knob at one end in the longitudinal direction;
A lock receiver into which the lock rod is slidably inserted; a stop protrusion which is fitted into a recess provided in the middle of the lock lever so as to be retractable and which is always urged outward by a spring; A simple lock comprising a first locking groove and a second locking groove that are carved on the inner surface of the cylinder and are engaged by the stopper when the lock is locked and unlocked by the lock lever, respectively,
The lock rod is inserted into a beveled edge guide having an inwardly inclined surface surrounding the opening edge of the lock rod insertion side of the lock rod receiver, and a first locking groove of the lock rod receiver. an inclined edge guide having an inwardly directed inclined surface surrounding the engaging side groove edge of the protrusion; and a sliding edge attached to the outer edge of the protrusion and abutting against the inclined edge guide and the inclined edge guide. A simple lock characterized by being equipped with.