KR920008094Y1 - Lock system - Google Patents

Abstract

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Description

Interlocking lock

1 is a front view of a box case accommodating a split nut body.

2 is a rear view of this case.

3 is a left side view of the case.

4 is a plan view of this case.

5 is a cross-sectional view taken along the line a-a of FIG.

6 is a cross-sectional view taken along the line b-b in FIG.

Fig. 7 is a longitudinal sectional view of the locking device in a closed door lock state.

8 is a cross-sectional view taken along line c-c in FIG.

FIG. 9 is a cross-sectional view corresponding to FIG. 8 when the lock shaft is unlocked. FIG.

* Explanation of symbols for main parts of the drawings

1: fixed frame 2: front wall plate

3: open hole 4: box case

5,6: Split nut body 7,8: Side wall plate

9, 10: shaft 11, 12: screw groove

13,14: swinging spring 15: door

16: lock body 17: lock shaft

18: screw rod 19, 21: arc-shaped long hole

20,22: guide pin 23: top wall plate

24: bottom wall 25: key

26: stop ring 27: cold spring

28: spring receiving hole 29,30: spring receiving projection

31: mounting block 32: spring receiving pin

33: mounting nut

The present invention is a locking device that stops on a fixed frame such as a door of a vending machine. The locking groove of the split nut body moves substantially in the radial direction of the lock shaft and is engaged with the screw rod of the lock shaft. It's about the lock.

In the interlock type locking device disclosed in Japanese Patent Application No. 63-10472, a long hole of a movable cylinder for accommodating three to four divided nut bodies adjacent to the same circumference in the central taper hole of the nut mother, and advancing and retreating from the nut mother body The screw nut part is provided in the lock shaft which slidably inserts this split nut body into a movable cylinder through the said center taper hole, and advances a movable cylinder to a nut cylinder, and makes the screw groove part of a split nut body into the said long hole. I keep putting in.

In this lock apparatus, the lock nut is inserted into the movable cylinder while the movable cylinder is held in the forward position. Then, the split nut body is retracted along the center taper hole by retracting the movable cylinder toward the nut body. The groove is projected from the long hole into the movable cylinder, and the screw rod portion of the lock shaft and the screw groove portion of the split nut body are engaged.

The engagement of these split nut bodies and lock shafts is held by springs inserted between the nut mother and split nut bodies.

However, the engagement type locking device operating in this way has a relatively complicated configuration, which increases the fabrication and assembly cost, and does not allow the movable cylinder to be rotated many times to release the engagement between the screw rod portion of the lock shaft and the screw groove portion of the split nut body. Because of the compulsory operation, the unlocking operation was performed at the moment.

It is therefore an object of the present invention to provide an interlocking locking device in which the fabrication and assembly cost can be reduced because the structure is simplified, and the unlocking operation is performed at the same time.

Hereinafter, referring to the reference numerals in the accompanying drawings, the engaging lock device of the present invention is fixed to the fixed frame body 1, the box-shaped case in which the open hole 3 is provided in the center of the front wall plate 2 (4) and; The proximal ends 5a, 6a are conically joined to the side wall plates 7, 8 of the case 2 by concentric shafts 9, 10 at the site accommodated in the case 4 and close to the front wall plate 2. A pair of split nut bodies 5, 6 provided with threaded groove portions 11, 12 facing each other on the front end portions 5b, 6b in the rear direction of (3); Springs 13 and 14, which are installed between the case 4 and the split nut bodies 5 and 6, and oscillate and pressurize the split nut bodies 5 and 6 in the direction in which the screw grooves 11 and 12 approach each other. And; A lock body 16 fixed to the door 15 opened and closed with respect to the fixed frame body 1; It is rotatably inserted into the lock main body 16, and consists of the lock shaft 17 which provided the screw rod part 18 in the front-end | tip, and divides the diameter of the screw rod part 18 into split nut bodies 5 and 6; The thickness dimension between the flat surface portions 18a and 18b formed parallel to both sides of the screw rod portion 18 is set to be equal to or slightly larger than the spacing between the screw groove portions 11 and 12 of The screw grooves 11 and 12 are set smaller than the gap when the screw grooves 11 and 12 are closest to each other.

When the door 15 is closed with respect to the fixing frame 1, the threaded rod 18 of the lock shaft 17 is inserted into the case 4 at the opening hole 3. Since the diameter of the screw rod 18 is set to be slightly larger than the spacing between the screw grooves 11 and 12 at the closest approach, the screw rod 18 advances the space between the split nut bodies 5 and 6. In the process, the split nut bodies 5, 6 oscillate slightly around the axis 9, 10, and allow the lock shaft 17 to move forward.

When the door 15 is completely closed, as illustrated in FIGS. 7 and 8, the threaded grooves 11, 12 of the split nut bodies 5, 6 are screw rods of the lock shaft 17 in their overall length. Meshes with section 18.

As a result, the door 15 is stopped with respect to the fixed frame body 1.

The engagement of these divided nut bodies 5 and 6 with the lock shaft 17 is achieved by the springs 13 and 14 pressing the tip portions 5b and 6b of the divided nut bodies 5 and 6 to the screw rod 18. maintain.

When the lock shaft 17 is pulled out of the case 4 by pulling the door 15, the threads of the screw grooves 11 and 12 are engaged with the threads of the screw rod 18. This force is changed to a force for traction rotation of the split nut body 5, 6 toward the screw rod 18, and as a result, the thread of the screw grooves 11, 12 and the screw thread of the screw rod are more firmly engaged. As a result, the threaded rod 18 is further tightened by the split nut bodies 5 and 6.

To release the stop due to the engagement, as shown in FIG. 9, the lock bar 17 may be rotated 90 degrees in a predetermined direction.

At the end of this rotation, the engagement of the threads of the screw grooves 11 and 12 and the threads of the screw rod 18 is released.

Since the thickness dimension between the flat surface portions 18a and 18b of the screw rod portion 18 is set smaller than the spacing between the screw groove portions 11 and 12 at the closest approach, the flat surface portions 18a and 18b at the rotation end position. Sufficient clearance is secured between the screw grooves 11 and 12.

Therefore, when the threaded rod 18 escapes from the case 4 during the opening operation of the door 13, the threaded rod 18 even if the lock rod 17 is somewhat shaken due to the attachment state of the door 15 or the like. The thread of the screw escapes smoothly without fear of meshing with the screw grooves 11 and 12 again.

In the illustrated embodiment, the axis 9, 10 penetrates the side wall plates 7, 8 of the case 4, and the side wall plates 7, 8 have a pair of circular arcs centering on the axis 9, 10. Long holes 19 and 21 on the top are provided.

Spring bearing protrusions 29 and 30 protrude from the central end portions 5a and 6a of the split nut bodies 5 and 6, and are divided with the upper wall plate 23 and the lower wall wall 24 of the case 4. Compression coil spring springs 13 and 14 are provided between the nut bodies 5 and 6.

The guide pins 20 and 22 which penetrate the tip ends 5b and 6b of the split nut body 5 and 6 are inserted into the arc-shaped long holes 19 and 21 of the side wall plates 7, 8, and the split nut The swing range of the sieves 5 and 6 is determined by the long holes 19.21 and the guide pins 20 and 22.

In this embodiment, as shown in FIG. 5, the threaded grooves 11 and 12 of the split nut bodies 5 and 6 are most close to the guide pins 20 and 22 at the close ends of the long holes 19 and 21. As shown in FIG. When in the approaching position, the screw groove portions 11 and 12 are not arranged in parallel, and the interval between the sides of the open hole 3, that is, the side where the lock shaft 17 is inserted, is slightly larger.

Because of this slightly inclined arrangement, the insertion operation of the screw rod 18 is made smoothly.

The screw grooves 11 and 12 may be arranged in parallel, and in such a case, a guide taper for pressurizing and expanding the divided nut bodies 5 and 6 may be provided at the tip of the screw rod 18.

In this embodiment, the lock shaft 17 is prevented from escaping from the lock main body 16 by the stop ring 26, and is stopped with respect to the known pin tumbler lock main body 16 incorporated therein.

One end of the winding spring 27 fitted to the rear projection of the lock shaft 17 is inserted into the back receiving hole 28 of the lock body 16, and the other end of the winding spring 27 is fixed to the lock shaft 17. The hanger is fitted to the receiving pin 32.

For this reason, when the lock shaft 17 is rotated 90 degrees in a predetermined direction by the key 25 inserted into the lock mechanism, the lock shaft 17 immediately reverses when the finger 25 is released.

As described above, in the locking type locking device of the present invention, a pair of split nut bodies 5 and 6, which are provided with the threaded grooves 11 and 12 opposite to the front end portions 5b and 6b, are attached to the box-shaped case 4. Each of the received base ends 5a and 6a is conically joined to the side wall plates 7 and 8 of the case 2 by shafts 9 and 10, and between the case 4 and the split nut bodies 5 and 6, respectively. The divided nut bodies 5 and 6 are urged and swinged in the direction in which the screw grooves 11 and 12 approach each other by the installed springs 13 and 14, and the screw rods 18 are provided at the distal end of the lock shaft 17. And the flat surface portions 18a and 18b are formed on both sides of the screw rod portion 18 in parallel, so that the structure is simplified compared to the conventional apparatus, and the manufacturing assembly cost can be reduced.

In addition, the diameter of the screw rod 18 is set to be equal to or slightly larger than the spacing of the screw grooves 11 and 12 at the closest contact, while between the flat portions 18a and 8b of the screw rod 18. The thickness dimension of is set smaller than the spacing between the screw grooves 11 and 12 at the closest distance, so that the threaded rod 18 of the lock shaft and the screw grooves 11 and 12 of the split nut body 5 and 6 are engaged. Only by inserting the screw rod 18 into the case 4, it is established immediately, and the screw rod 18 and the screw grooves 11 and 12 are inserted only by the rotation of the lock shaft 17 around 90 degrees. The disengagement is released at the moment, and the ease and speed of trial and operation is excellent.

Claims (1)

A box-shaped case 4 which is fixed to the fixing frame 1 and provided with a hole 3 in the center of the front wall plate 2; Housed in the case 4, and proximal ends 5a and 6a are conically joined to the side wall plates 7 and 8 of the case 2 by shafts 9 and 10 at a portion near the front wall plate 2, and A pair of split nut bodies 5, 6 provided with screw groove portions 11, 12 facing each other on the side faces of the tip portions 5b, 6b in the rear direction of the hole 3; Springs 13 and 14, which are installed between the case 4 and the split nut bodies 5 and 6, and oscillate and pressurize the split nut bodies 5 and 6 in the direction in which the screw grooves 11 and 12 approach each other. And; A lock body 16 fixed to the door 15 opened and closed with respect to the fixed frame body 1; It consists of a lock shaft (17) rotatably inserted into the lock body (16) and provided with a screw rod portion (18) at its tip, and the diameter of the screw rod portion (18) is divided into nut parts (5, 6). Thickness dimension between the flat surface portions 18a and 8b formed parallel to both sides of the screw rod portion 18, set at or slightly larger than the spacing between the screw groove portions 11 and 12 of Interlocking locking device, characterized in that is set smaller than the interval at the closest approach of the screw groove (11, 12)