JP3165946B2 - Lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock for locking a sliding door, such as a sliding door, at a predetermined position.

[0002]

2. Description of the Related Art Various locks are known as locks for locking a sliding door that moves. For example, 50-1
As shown in Japanese Patent Publication No. 514, a lock rod is provided on the main body so as to be movable in the axial direction, the lock rod is urged and held in a retracting direction by a spring, and a cam ring is rotatably mounted on the main body. There is known a lock in which a lock rod is moved in a protruding direction against a spring.

As shown in Japanese Utility Model Laid-Open Publication No. 5-85967, a lock rod is inserted into a rotary cylinder rotated by an operation handle, and a projection provided on the lock rod is connected to a helical length of the rotary cylinder. 2. Description of the Related Art There is known a lock in which a lock rod is fitted in a hole and a linear elongated hole, and a lock rod is moved in a protruding direction and a retracting direction by rotating a rotary cylinder with an operation handle.

[0004]

With these locks, the locking rod can be locked so as not to move by fitting the locking rod to the receiving recess on the side of the sliding door as the projecting position. You can move shoji.

However, in each of the locks described above, the lock rod is moved in the projecting direction by rotation of the cam ring and the rotating cylinder, and the movement stroke of the locking rod in the projecting direction is the rotation of the cam ring and the rotating cylinder. It is determined by the angle (that is, the operating angle of the handle). To lock the sash, the sash is moved to position the receiving recess on the sash side and the locking rod, and then the handle is operated to move the locking rod in the projecting direction. That means
It is not preferable as a lock for locking the sliding door of the up / down window at an arbitrary position.

That is, a plurality of locking holes are formed on the sliding door side of the raising / lowering window at intervals in the vertical direction, and the locking rod of the lock attached to the window frame is locked in one of the locking holes to make the sliding door. Is locked at an arbitrary position. In the above-described conventional lock, the locking hole and the lock rod must be positioned, and the operation is very troublesome.

Therefore, an object of the present invention is to provide a lock which can solve the above-mentioned problems.

[0008]

SUMMARY OF THE INVENTION The present invention comprises a main body 10;
A cam body 12 having a cam portion 30 oblique with respect to a direction parallel to the axial direction, the cam body 12 being rotatably attached to the main body 10 in the front and back direction, and an axial end of the cam body 12; An operating handle 13 for rotating the cam body 12, a lock rod 14 attached to the main body 10 so as to be movable in a protruding position and a retracted position toward the front and back sides, and a locking rod 14 A spring 15 having a projection position;
The lock rod 1 is provided on the lock rod 14 and is in contact with the cam portion 30 and slides along the body 10 in the front and back direction.
4 is provided with a projection 38 for preventing rotation of the lock rod 1.
When the spring 4 is pushed by the spring 15 toward the projecting position, the projection 38
Is in contact with the cam portion 30 and the projection 38 moves away from the cam portion 30 when the lock rod 14 moves to the retracted position against the spring 15.

[0009]

According to the present invention, when the operation handle 13 is rotated to rotate the cam body 12, the protrusion 38 slides along the cam portion 30. Can be moved to the retracted position. The lock rod 14 is provided with a spring 15
When the lock rod 14 moves to the retracted position against the spring 15 when the lock 38 is pressed to the protruding position and comes into contact with the cam portion 30 of the cam body 12, the protrusion 38 The lock rod 14 can be pushed to the retracted position against the spring 15, and the lock rod 14 in the protruded position can be moved to a position intermediate between the protruded position and the retracted position without operating the operation handle 13. By moving the sliding door up and down with the locking rod 14 pressed against the locking plate 8 attached to the sliding door of the raising and lowering window, the locking rod 14 is locked in the locking hole 9, so that the sliding door can be locked at any position. Operation becomes easy.

[0010]

[Embodiment] As shown in FIG. 1, a door frame 1 such as an open door is formed into a square frame by an upper frame 2, a lower frame 3, a left vertical frame 4, and a right vertical frame 5. The upper sash 6 and the lower sash 7 are vertically movably mounted to form an up-and-down window, and the lock A according to the present invention is mounted on the left vertical frame 4, and the upper sash 6 and the lower sash 7 are fixed by the lock A. As shown in FIG. 2, locking is performed at an arbitrary position.

That is, as shown in FIG. 3, a locking plate 8 having an L-shaped cross section is attached to the lower shoji 7 so as to face the left vertical frame 4, and a plurality of locking plates A plurality of holes 9 are formed at intervals in the longitudinal direction.

The lock A is, as shown in FIG.
And a back plate 11 attached to the back surface of the main body 10, and the cam body 1 rotatably supported by the back plate 11 and the main body 10.
2, an operating handle 13 connected to the cam body 12, a lock rod 14, and a spring 15 for urging the lock rod 14 in a projecting direction.
Etc. are provided.

The main body 10 is, as shown in FIGS.
A rectangular block-shaped recess 16 for attaching a back plate to the back surface 10a.
Is formed in the concave portion 16 and a cam body mounting hole 17 is formed.
A lock rod mounting hole 18 is formed. The cam mounting hole 17 and the lock rod mounting hole 18 are connected by a long groove 19, and the cam body mounting hole 17 is opened through a through hole 20 on the surface 10 b.

The back plate 11 has a rectangular plate shape and has a cam support hole 2.
1 and a lock rod insertion hole 22 are formed, and a cylindrical projection 23 is provided integrally and concentrically with the lock rod insertion hole 22.
And is attached to the main body 10 with screws 24 so as to be flush with the back surface 10a of the main body 10.

[0015] As shown in FIG.
Small diameter shaft portion 25, large diameter shaft portion 26, and second small diameter shaft portion 27
, A third small-diameter shaft portion 28 and a rectangular portion 29 are sequentially integrated in the axial direction, and the large-diameter shaft portion 26 has a pair of cam portions 30 formed therein. Is oblique to the direction parallel to the axial direction, and the pair of cam portions 30 has a substantially U-shaped planar shape. Has a second concave portion 32 formed therein. In addition, the first concave portion 31 is provided with a pair of cam portions 30.
Is common to

As shown in FIGS. 5 and 6, the cam body 12 has a first small-diameter shaft-like portion 25 formed in a cam support hole 21 of the back plate 11. As shown in FIG.
The second small-diameter shaft portion 27 is inserted into the through hole 34 of the spacer 33 provided in the cam body mounting hole 17, and the third small diameter shaft portion 28 is fitted into the through hole 20 of the main body 10. As a result, the rectangular portion 29 protrudes from the back surface 10b of the main body 10, and the rectangular portion 29
And a pair of flat springs 36 formed on the second small-diameter shaft 27 and having a pair of flat surfaces 36 and 36 mounted in the cam body mounting holes 17. 37, the cam body 12 can be held at a position rotated by 180 degrees.

As shown in FIGS. 5 and 6, the lock rod 14 has a lock rod mounting hole 18 of the main body 10 and a lock rod insertion hole 22 of the back plate 11. As shown in FIG.
The lock rod 14 is slidably fitted into the cylindrical projection 23.
Is urged in the protruding direction by a spring 15, and
A projection 38 such as a pin attached to the lock rod 14 projects from the long groove 19 into the cam body mounting hole 17 and the cam portion 3 of the cam body 12
0, so that the lock rod 14 can freely move between the projecting position and the retracted position without rotating.

As shown in FIGS. 3 and 6, the lock A has the main body 10 attached to the indoor side wall 4a of the left vertical frame 4 with screws 40, and the cylindrical projection 23 of the back plate 11 is provided with a hole 41 in the indoor side wall 4a. Is fitted. As described above, since the cylindrical projection 23 is fitted into the hole 41 and the locking rod 14 is slid in the cylindrical projection 23, the locking rod 1 is formed even if the processing accuracy of the hole 41 in the indoor side wall 4a is poor.
4 can slide smoothly.

Next, the operation will be described. As shown in FIGS. 5 and 6, when the operation handle 13 is set to the upright position, the first concave portion 31 of the cam body 12
And the position opposite to. As a result, the locking rod 14 is
5, the protrusion 38 is fitted into the first concave portion 31, and the lock rod 14 is in a protruding position beyond the back plate 11, and the lock rod 14 is engaged as shown in FIGS. The lower sash (shoji) 7 is locked at that position by being locked in the locking hole 9 of the stop plate 8.

In the above-mentioned state, there is a gap between the lock rod 14 and the bottom 18a of the lock rod mounting hole 18 as shown in FIG. It can be moved to the retracted position.

When the operating handle 13 is turned to the left or right from the above-mentioned state, the cam body 12 also rotates together, and the cam portion 30 pushes the projection 38 so that the lock rod 14 is pulled against the spring 15 in the retracting direction. Go to

As shown in FIGS. 7 and 8, when the operating handle 13 is rotated by 90 degrees to a horizontal position, the second concave portion 32 of the cam body 12 faces the projection 38 of the lock rod 14. Since the projection 38 is in the position, the projection 38 is fitted into the second recess 32 to hold the lock rod 14 in the retracted position, and the lock rod 14 comes out of the locking hole 9 of the locking plate 8 to unlock the sash. .

Next, an operation of locking the lower sash (shoji) 7 at an arbitrary position will be described. As shown in FIG. 8, with the operation handle 13 in the horizontal position, the lock rod 14 is pulled out from the lock hole 9 of the lock plate 8, and the lower sash 7 is slightly moved up and down in this state. The lock rod 14 is pushed in the protruding direction by the spring 15 with the handle 13 upright.

As a result, the locking rod 14 is pressed against the locking plate 8 as shown in FIG. 9. When the lower sash is moved up and down in this state, the locking plate 8 moves with respect to the locking rod 14, and When the locking hole 9 of the locking plate 8 matches the locking rod 14, the locking rod 14 is pushed by the spring 15 and locked in the locking hole 9 to lock the lower sash 14 at an arbitrary position.

As described above, since the lower sash (shoji) 7 can be locked at an arbitrary position without aligning the locking rod 14 and the locking hole 9, the operation becomes easy.

Further, a position where the operation handle 13 is erected,
In the horizontal position, the projection 38 of the lock rod 14 fits into the first concave portion 31 and the second concave portion 32 of the cam body 12, so that the operator can detect that the lock rod 14 has reached the protruding position and the retracted position. However, even if the hand is released from the operation handle 13, the lock rod 14 can be reliably held at the projecting position and the retracted position.

Further, since a pair of cam portions 30 are formed on the cam body 12 so that the lock rod 14 can be moved between the protruding position and the retracted position even when the operation handle 13 is rotated rightward and leftward, the left and right hand is different. Available as tablets.

FIG. 10 shows a second embodiment, in which four cam portions 30 are formed on the cam body 12 at 90-degree intervals in the circumferential direction. In this way, the operating handle 13 can be moved 90 degrees in a 360-degree range. The lock rod 14 can be moved to the protruding position and the retracted position every time it is rotated by one degree.

[0029]

By rotating the operation handle 13 to rotate the cam body 12, the projection 3 is moved along the cam portion 30.
Since the slide 8 moves, the lock rod 14 can be moved to the protruding position and the retracted position. Further, the lock rod 14 is pushed to the projecting position by the spring 15, and the projection 38 provided on the lock rod 14 contacts the cam portion 30 of the cam body 12, and the lock rod 14 moves to the retracted position against the spring 15. Since the projection 38 is sometimes separated from the cam 30, the lock rod 14 can be pushed to the retracted position against the spring 15, and the lock rod 14 at the protrusion position is
Can be moved to an intermediate position between the protruding position and the retracted position without operating the lock lever 1 on the locking plate 8 attached to the sliding door of the raising and lowering window.
By moving the sash up and down while pressing 4, the lock rod 14 is locked in the locking hole 9, so that the operation of locking the sash at an arbitrary position is simplified.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a door having an up / down window.

FIG. 2 is a schematic front view of a state in which a door shoji is locked at an arbitrary position.

FIG. 3 is a cross-sectional view taken along line BB of FIG. 2;

FIG. 4 is an exploded perspective view of the lock.

FIG. 5 is a partially cutaway perspective view of the lock showing a state where the lock rod is in a protruding position.

FIG. 6 is a longitudinal sectional view of the lock showing a state where the lock rod is in a protruding position.

FIG. 7 is a partially cutaway perspective view of the lock showing the lock rod in a retracted position.

FIG. 8 is a longitudinal sectional view of the lock showing a state where the lock rod is in a retracted position.

FIG. 9 is a vertical cross-sectional view showing an operation of locking the sliding door of the raising / lowering window.

FIG. 10 is a partially cutaway perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

7 ... lower sash, 8 ... locking plate, 9 ... locking hole, 10 ... body, 1
DESCRIPTION OF SYMBOLS 1 ... Back plate, 12 ... Cam body, 13 ... Operation handle, 14 ...
Locking rod, 15 spring, 30 cam part, 31 first concave part, 3
2 ... second concave portion, 38 ... projecting portion.

Claims (2)

(57) [Claims] 1. An axial shape having a main body 10 and a cam portion 30 oblique to a direction parallel to the axial direction.
Then, the main body 10 is turned in the
A cam body 12 rotatably mounted, and a cam body 1 connected to an axial end of the cam body 12;
2 and an operation handle 13 for rotating the main body 10 and a pulling position of the main body 10 toward the front and back sides.
A lock rod 14 movably attached to the locking position, a spring 15 having the lock rod 14 as a protruding position, and a lock rod 14
Then, the locking rod 1 slides in the front and back direction along the main body 10.
4 is provided with a protruding portion 38 for preventing rotation, when the lock rod 14 is pushed toward the protruding position by the spring 15.
The projection 38 comes into contact with the cam portion 30 and the locking rod 14
When moving to the retracted position against the
A tablet characterized by being separated from 30. 2. The body 10 has a cam facing the front and back sides.
Body mounting hole 17 and lock rod mounting hole 18 facing front and back
And the lock rod mounting hole 18 and the cam body mounting hole 17
The projection 38 has a long groove 19 that is slidable and communicates with the projection.
The tablet according to claim 1,