JPS5832531Y2 - Locking device for sliding doors - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a locking device for a sliding door that can be operated smoothly, has strong pulling and pulling functions, and is excellent in crime prevention.

A conventional device that performs this type of action is the so-called crescent lock, in which the crescent sickle spends most of the rotation angle in the air until it reaches the corresponding receiving metal fitting, and then the crescent sickle spends most of the rotation angle in the air until it reaches the corresponding receiving metal fitting. The rotation angle of the lever is small, and the frictional resistance with the bracket is large, so a large amount of force is required to operate the lever, and not only is the pulling dimension small, but the window glass near the mounting location can be broken. The lock can be easily unlocked by simply rotating the lever, and it has various drawbacks such as poor security.

However, in order to eliminate and solve the above-mentioned drawbacks, the present invention provides a plug in which a lever 2 is integrally formed at one end of a cylindrical casing 1 fixed to the side end of the inner door A through one hole thereof. 3 so that it can be slid back and forth and rotated 180 degrees when pushed into the casing, and
A rotating shaft 4 that engages with the plug 3 and projects from the other hole while being pushed by the plug is inserted through a spring 5 so as to be slidable back and forth and freely rotatable, and is inserted into the end of the rotating shaft. is inclined plane 6
The cam body 6 having a □ is properly fixed, and the inclined surface 6 of the cam body 6 is
New song piece 7□ that 1 and end face 6□ respectively interview.

It is characterized by a structure in which a locking plate 7 having a number 72 is attached to the outer door B at a position facing the cam body 6.

In addition, the means for inserting the plug 3 into the casing 1 so that it can be slid back and forth and rotated 180 degrees when pushed into the casing is to rotate the plug 180 degrees in the front and back sliding direction on one outer periphery of the plug 3. Two straight grooves 3t, 31 corresponding in position
A circumferential groove 3□ connecting these grooves 30 and 3□ is carved near the lever 2, and the tip of the pin 8 is exposed to a part of this groove from the outside of the mounting plate 11 that is integrated with the casing 1. This is done by using this pin as a guide.

In addition, the means for engaging the plug 3 and the rotating shaft 4 is provided by providing a vertically divided groove 33 in the protrusion at the center of the plug that is inserted into the hole in the center of the rotating shaft 4, and connecting this groove to the center of the rotating shaft 4. This is done by inserting a pin 4, which is fixed across the diameter.

In other countries, 9 is a return spring for the plug 3 interposed between the plug 3 and the rotation shaft 4, which rotates the plug.
When the linear groove 31 matches the position of the pin 8, if the user releases his/her hand, the plug automatically returns to the protruding state.

Next, in accordance with the above configuration of the present invention, the specific usage, operation, and effects of the present device will be explained with respect to the illustrated embodiment.

That is, in the unlocked state shown in FIGS. 1 to 3, the rotation shaft 4 is in a state of being retracted into the casing 1 by the restoring force of the spring 5, and the plug 3 is also moved toward the indoor side by the restoring force of the spring 9. It is in a state of protrusion.

When the plug 3 is pushed in the direction of the arrow with the doors A and B in Fig. 5 closed in a sliding manner, the straight groove 3° is guided by the pin 8 and resists the spring 9. When the plug is pushed in, the end of the plug contacts the end of the rotating shaft 4, but when it is pushed in slightly against the spring 5, the rotating shaft 4 moves as shown in the dotted line in FIG. 4 or 5. It is pushed out toward the outside and reaches a position where it can engage with the locking plate 7 of the door B.

At this time, the intersection of the linear groove 3□ and the circumferential groove 3° is at the position of the pin 8, so when you squeeze the lever 2 and turn it 180° in the direction of the arrow in Figure 1, the plug 3 will be aligned with the groove 3□. It rotates while being guided by the pin 8, and the rotation shaft 4 also rotates together with the cam body 6 via the pin 4.

Therefore, the cam body 6 pulls the bent piece 7□ of the locking plate 7 facing the cam body toward the door A side by its inclined surface 6□, and at the same time draws the bent piece 7□ toward the left, that is, by the end face 6□. Since door B is further pushed in the closing direction, shutters A and B are pulled together and separated, and are locked in an airtight state.

In this state, when you release your hand from the lever 2, the previous straight groove 3 and the other straight groove 3 □ correspond to the 180° rotation position.
is guided by the pin 8, and the plug 3 protrudes again due to the restoring force of the spring 9. At this time, however, the force pushing the rotating shaft 4 outward disappears, and the restoring force of the spring 5 moves the rotating shaft from the casing 1. Because there is an internal force that forces them to retreat,
The cam body 6 engaged with the locking plate 7 draws the locking plate, that is, the door B, further toward the door A, and the airtight state is completely maintained.

In this locked state, if the plug 3 is pushed in again and the lever 2 is rotated 180 degrees in the opposite direction to the above, the engagement between the cam body 6 and the locking plate 7 is released, and as shown in FIGS. becomes unlocked.

After that, the above operation is repeated every time the lock is unlocked, but if the plug 3 is pushed in and rotated slightly until the circumferential groove 3□ comes to the position of the pin 8, the plug will be prevented from protruding and rotated. Since the moving shaft 4 is held in a protruding state, that is, in a state where it crosses the trajectory of the bending piece 7□, even if you try to open the door A or B, the rotating shaft 4 will not come into contact with the edge of the bending piece 7□. , it is also possible to put it in a so-called temporarily locked state that cannot be opened.

As described above, according to the locking device for a sliding door according to the present invention, the plug integrated with the lever is inserted into the casing so that it can be slid back and forth and rotated by a certain angle when pushed into the casing. At the same time, a rotating shaft integrated with a cam body that engages with the plug and projects by being pushed by the plug is fitted so as to be slidable back and forth and rotatable via a spring, and the plug is pushed into the casing. Since the cam body is made to protrude to the position where it engages with the corresponding locking plate, the rotation angle can be changed to the position where the crescent sickle engages with the corresponding receiving metal fitting, like a conventional crescent lock. Unlike the lever, which spends most of the time and uses the remaining rotation angle to pull and draw the door, the rotation angle of the lever, that is, the cam body, is mostly used for pulling and pulling the door. The size of the lock is large, and the frictional resistance is small, so it can be locked securely with a light lever operation.The lever operation direction is also parallel to the door, unlike conventional crescent locks, so it is easy to operate. It has the advantage of being easy.

In addition, the plug that is integrated with the lever is configured so that it cannot be rotated until it is pushed into the casing, so even if you break the window glass near the installation location and try to rotate the lever, it will be impossible. , it can be mistaken for a lever lock, so it has a high security effect, and since the force of pulling and pulling the door is strong, it prevents the door from rattling, and it also has a great soundproofing effect. be.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a front view of the device in an unlocked state when the device is attached to an inner door;
Figure 2 is a longitudinal cross-sectional side view taken along the line A-A in Figure 1, Figure 3 is a cross-sectional front view taken along the line B-B in Figure 2, and Figure 4 shows the device in its plugged-in state. FIG. 5 is a plan view of the device in the unlocked state, and FIG. 6 is a plan view of the same device in the locked state. 1...Casing, 2...Lever, 3
...Plug, 4...Rotation axis, 5...
...Spring, 6...Cam body, 7...
...Latching plate, 8...Pin, 9...Spring.

Claims (1)

[Scope of utility model registration request] A plug 3, which has a lever 2 integrally formed at one end, is inserted into a casing 1 fixed to the side end of the inner door A, and is slidable back and forth through one hole of the casing 1, and rotates at a certain angle when pushed into the casing. At the same time, the rotary shaft 4 that engages with the plug 3 from the other hole and projects by being pushed by the plug can be slid back and forth and rotated freely via the spring 5. A cam body 6 having an inclined surface 6□ is appropriately fixed to the end of the rotating shaft, and a locking plate 7 with which the cam body 6 engages is placed at a position facing the cam body 6 of the outer door B. A locking device for sliding doors that can be installed on.