JPH0477797B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is attached to a sliding door at an opening in a building, locks the sliding door, and seals the opening in the building by the sliding door. This invention relates to a simple lock that can be closed and has excellent security.

(Prior Art) Generally, a pair of front and rear sliding doors is used that is slidably attached to an opening in a building and has a fitting frame that overlaps the front and back when the opening is closed. Conventionally, a device for locking such sliding doors is disclosed in Japanese Utility Model Application Publication No. 56-47064. In this conventional technology, a locking body is held movably and rotatably in the front fitting frame of a pair of sliding doors that are overlapped back and forth, and the rear end of the locking body is inserted into and removed from the rear fitting frame. A locking object having a possible opening is attached, a drawing part having a pressing surface is formed protruding in the radial direction at a position eccentric from the rotation axis at the rear end of the locking object, and the locking object is pressed against the locking object. A cam that forms a pressed surface that presses the pair of sliding doors in the closing direction by contacting the surface, a pin passes through the middle part of the locking body, and the pin engages with a cylindrical member that holds the locking body. A groove is formed, and the locking body is moved back and forth via a pin that rotates the locking body and a cam groove, thereby pressing the pair of sliding doors in the direction of close contact.

(Problems to be Solved by the Invention) In the prior art, the protruding part forming the drawing part of the locking body has the function of facing the pin and receiving a pressing reaction force when it is pulled. The pressure reaction force received does not contribute to the drawing action, and the pressure reaction force is only received by the protruding part, and there is no part to back it up, which causes strength problems. It requires a pin and a cam groove, the processing of the locking body and the cylindrical member is troublesome, and the number of parts increases.

(Means for Solving the Problems) In view of the above, the present invention makes it possible to lock a pair of sliding doors by pressing them in the drawing direction and the pulling direction, and further ensures the operation of the sliding doors. At the same time, the purpose is to provide a simple lock with a strong and easy-to-configure pulling mechanism, and the technical means adopted to achieve this purpose are characterized by A pair of sliding doors 1 that are opened and closed by moving in the sliding direction.
The locking body 14 is held in the inner fittings frames 11 of 3 and 13 in a movable and rotatable manner in the internal and external directions, and the outer end of the locking body 14 is inserted into and removed from the outer fittings frame 12 through an opening 33.
At the outer end of the locking body 14, a drawn part 21 is provided eccentrically from the rotational axis and extends outward along the rotational axis. 21
A pressing surface 23 is formed at the most eccentric position from the rotation axis of the outer circumferential surface of the body 15, and when the drawing part 21 is inserted into the opening 33 of the locked body 15 and rotated, the pressing surface 23
3 to form a pressed surface 36 that presses the pair of sliding doors 13 in the closing direction, and from the outer end of the drawing part 21 of the locking body 14 in a direction perpendicular to the rotation axis. A drawing part 22 is extended to the drawing part 21 , a contact surface 22 a is formed on the drawing part 21 side surface of the drawing part 22 , and the drawing part 22 is attached to the outer surface of the locked object 15 in the opening 3 .
3 and rotated, the contact surface 22a
A cam surface 40 that comes into contact with the sliding doors 13 and presses the pair of sliding doors 13 in the direction of close contact is formed.
The pressing reaction force applied to the contact surface 22a of 2 is the pressed surface 3
6, the abutting surface 22a is located on the opposite side of the pressing surface 23 of the drawing portion 21 with respect to the rotation axis.

(Function) When the locking body 14 is moved backward, its rear end portion is inserted into the opening 33 of the locked body 15. When the locking body 14 is rotated after being inserted, the pressing surface 23 of the drawing part 21 located at the eccentric position comes into contact with the pressed surface 36 of the locking body 15, and since it is eccentric, the pair Press the sliding doors 13, 13 in the closing direction.

At the same time, the drawing part 22 extending from the drawing part 21 in a direction substantially perpendicular to the drawing part 21 comes into contact with the cam surface 40 on the back surface of the locked object 15, and the pair of sliding doors 1
3 and 13 in the direction of close contact.

A pressing reaction force for pulling is applied to the pulling part 22, but since the pulling part 22 is located on the opposite side of the drawing part 21 with respect to the rotation axis, the pressing reaction force is applied to the drawing part 21. When it is transmitted, it is also received by the pressed surface 36, and the pulling action strengthens the drawing action,
The pressed surface 36 backs up the pulling portion 22 to ensure the pulling action.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 7 relate to embodiments of the present invention, 9
is a simple lock made of steel, and is attached to a pair of sliding doors 13, 13 that can be opened and closed by moving in the left-right direction (sliding direction) in the building opening 10. Each of the sliding doors 13, 13 has fitting frames 11, 12 that overlap in the front and back (inside and outside directions of the building) when the opening 10 is closed.

The simple lock 9 is attached to the front fitting frame (inner fitting frame) 11,1
It has 2.

The simple lock 9 includes a locking body 14 which is held on the front fitting frame 11 so as to be movable in the front and back direction and rotatable around its axis of movement, and a locking body 14 which is fixed to the rear fitting frame (outer fitting frame) 12 and attached to the front end of the fitting frame 12. The locked body 15 has an opening 33 along the surface 12'.

The locking body 14 is formed by machining into a stepped cylindrical shape with a flange 16 at the front end.
A knob attachment shaft 18 extends from the center of the front end of the flange 16. A knob 19 is inserted into the tip of the knob attachment shaft 18 and fixed with a screw 20.
Further, from the rear end surface of the locking body 14, a drawing part 21 extending in the front-rear direction and a drawing part 22 extending from the rear part of the drawing part 21 in a direction perpendicular to the rotation axis are integrally connected. It has an L-shape. Here, the side surface of the drawing part 21 that is most eccentric in the radial direction from the rotation center of the locking body 14 is a pressing surface 23, and the drawing part 22 is the drawing part 21 with respect to the rotation center (rotation axis). is located on the opposite side.

The locking body 14 is then held by the front fitting frame 11 via the holding cylinder 24. For this holding, first, the holding cylinder 24 whose rear end is the mounting flange 25 is inserted into the front fitting frame 11 with its axis aligned in the front-rear direction, and the spring washer 2 is inserted into the holding cylinder 24.
A compression coil spring 28 sandwiched between the spring receiving ring 27 and the spring receiving ring 27 is loosely inserted. Here, the spring washer 28 engages with a step 32 inside the holding cylinder 24 . Next, the locking body 14 is inserted, so that the spring 28 is wound around the locking body 14 . Here, the spring receiving ring 27 engages with the flange 16 at the front end of the locking body 14. Then, the knob mounting shaft 18 of the locking body 14 is inserted into the through hole 30 of the rectangular mounting plate 29, and the mounting plate 2
9 overlaps the mounting flange 25 of the holding cylinder 24, and connects to the mounting plate 29 via a pair of screws 31, 31.
and a mounting flange 25 are fixed to the front end surface of the front fitting frame 11. Thereby, the locking body 14 is held by the front fitting frame 11 so as to be freely movable in the front and rear directions and rotatably around the movement axis. Further, by moving the locking body 14 back and forth, the drawing part 21 and the drawing part 22 can be freely moved in and out from the rear end surface 11' of the front fitting frame 11. Here, the stepped portion 17 of the stepped cylindrical locking body 14 is
When the locking body 14 is moved backward by a predetermined distance, it comes into contact with the spring washer 26 and restricts the backward movement of the locking body. By restricting the backward movement of this locking body to a predetermined dimension, the above-mentioned drawing portion 21
and the rear end surface 11' of the front fitting frame 11 with the pulling part 22
The appearance and retrieval of the material is also regulated to a predetermined size.

Next, the locked body 15 has a rectangular plate shape and has a rectangular opening 33 in the center thereof. An opening 3 is located at a position corresponding to the longitudinal movement axis of the locking body 14.
3, the locked body 15 is fixed along the front end surface 12' of the rear fitting frame 12 via screws 34, 34. Here, the rear part of the opening 33 of the rear fitting frame 12 is hollowed out to form a recess 35. As a result, the drawing part 21 and the drawing part 22 protrude and retract from the rear end surface 11' of the front fitting frame 11,
It can be inserted into and removed from the opening 33.

Then, the pressed surface 3 is brought into pressure contact with the pressing surface 23 by rotation within the opening 33 of the drawing part 21.
6 is provided along one side of the longitudinal periphery of the opening 33. In this embodiment, a rear protruding wall 37 is provided to protrude from one side of the periphery, and its inner wall surface is used as the pressed surface 36. The inner peripheral wall surface of the opening 33 may be used as the pressed surface 36 without providing such a protruding wall 37. However, by providing the protruding wall 37 as in this embodiment, the contact area with the pressing surface 23 is increased, and a large pressing force is stably generated.

The pressing of the pressed surface 36 by the pressing surface 23 is as follows:
As shown in FIG. 6, the eccentric dimension X from the rotation center 38 of the locking body 14 to the pressing surface 23 is made larger than the dimension Y from the rotation center 38 to the pressed surface 36, and the eccentric dimension X is larger than the dimension Y from the rotation center 38 to the pressed surface 36. The locking body 15 is connected to the locking body 1.
4 in the left-right direction, thereby pushing the pair of sliding doors 13, 13 in the closing direction.

Further, from the periphery of the opening 33 on the opposite side of the pressed surface 36, a convex portion 39 is provided in the opening 33 in a projecting shape. As shown in FIG. 7, the convex portion 39 has a central portion that is more bulged than the rear end surface 15' of the locked body 15.
The back surface of the bulged portion serves as a cam surface 40. Further, both ends 40', 40' of the cam surface 40 are recessed more than the rear end surface 15' of the locked body 15.
As a result, as the drawing part 22 rotates within the opening 33, the protruding dimension of the drawing part 22 is regulated to a predetermined dimension, so that the drawing part 22 is formed on the surface of the drawing part 21 side. When the contact surface 22a is guided and slid onto the cam surface 40, the locked body 15 is relatively moved toward the locking body 14 due to the cam action. By setting the bulge dimension of the cam surface 40 from the rear end surface 15' of the locked body 15 to a predetermined dimension corresponding to the predetermined protrusion dimension of the pulling part 22 from the rear end surface 11' of the front fitting frame 11, Locked object 15
By the relative movement toward the locking body 14 side, the rear end surface 11' of the front fitting frame 11 and the front end surface 12' of the rear fitting frame 12 can be brought into close contact. This front and rear fitting frame 1
1 and 12, a rearward pressing reaction force acts on the tip of the pulling part 22, but the pulling part 22
is located on the opposite side to the drawing part 21 with respect to the rotation axis, so when the pressing reaction force is transmitted to the drawing part 21, it acts to press the pressing surface 23 against the pressed surface 36. , the pressing reaction force is also received by the pressed surface 36, reinforcing the pulling part 22 and making the drawing action and the drawing action stronger and more reliable. Here, since both ends 40', 40' of the cam surface 40 are recessed more than the rear end surface 15' of the locked body 15, when the pulling portion 22 is guided onto the cam surface 40, it is pulled. There is no risk of getting caught. Note that it is preferable to provide a recessed portion in the center of the cam surface 40 in which the drawing portion 22 engages in a recessed manner, so that the locking body 14 can be prevented from rotating.

In order to lock the sliding doors 13, 13 with the simple lock 9 constructed as described above, the locking body 14 in the unlocked state shown in FIG. As shown in FIG. 3, the drawing part 21 and the drawing part 22 are inserted into the opening 33. Then, when the knob 19 is rotated 90 degrees, the drawing part 21 and the pulling part 22 rotate within the opening 33, and the pair of sliding doors 13, 13 are pushed in the closing direction as shown in FIG. Together with the front fitting frame 11 rear end surface 1
1' and the front end surface 12' of the rear fitting frame 12 are in close contact with each other.
Also, the cam surface 40 between the attracting portion 22 and the locked object 15
The pressing surface 23 of the drawing part 21 is engaged through the
The engagement between the opening 33 and the pressed surface 36 is maintained,
The sliding doors 13, 13 are restricted from sliding in the left and right direction and are locked. This locks the sliding doors 13 and 13, and also locks the sliding doors 1
3 and 13, the building opening 10 can be hermetically closed. Moreover, the simple lock 9 is the fitting frame 1
1 and 12 so that the mounting position cannot be seen from the outside, which is excellent in terms of crime prevention. It should be noted that if the knob mounting shaft 18 is made detachable from the locking body 14 so that it can be removed when the lock is locked, it is more preferable in terms of crime prevention since the lock cannot be easily unlocked.

This simple lock 9 can be unlocked by rotating the knob 19 90 degrees again, and the elastic force of the spring 27 allows the locking body 1 to be unlocked.
4 is moved rearward and becomes the unlocked state shown in FIG. 1 again.

Note that the locking body 14 is formed by bending a bar material as shown in FIG. 8, or formed into a desired shape by polymerizing and bonding a plurality of punched plate-like members 41 as shown in FIG. As a result, the cost can be reduced compared to forming by machining as in the above embodiment.

Further, in the above embodiment, the cam surface 40 is
5 The center part is bulged from the rear end surface 15', and both ends 40',
40' is recessed so that the pulling part 22 can be guided regardless of its rotating direction, but as shown in FIG. 10, the lower half 40a is bulged and the upper half 40b is It may also be immersed. In this case, the pulling portion 22 is moved from the upper half 40b side to the lower half 4
Since the locking body 22 is guided onto the cam surface 40 only by one-way rotation toward 0a, the rotation range of the locking body 22 is restricted to a predetermined range, and the locking body 14 is placed on the surface of the mounting plate 29 of the holding cylinder 24. "Open/close" depending on the direction of rotation
It is convenient to write down the characters.

Note that the cam surface 40 does not need to be formed on the side of the locked body 15, and may be formed on the drawing part 22 side so as to be interposed between the rear end surface 15' of the locked body 15.

Moreover, although the above-mentioned embodiment shows a sliding door that can be slid in the horizontal direction, it goes without saying that the present invention can also be applied to a sliding door that can be slid in the vertical direction.

(Effect of the invention) The simple lock according to the present invention has a pair of sliding doors 13,
13 can be locked by pressing in the drawing direction and the drawing direction, and the drawing part 22 extends from the rear part of the drawing part 21 in a direction substantially perpendicular to the drawing part 21, and 21, the pressing reaction force applied to the drawing part 22 can also be received by the pressed surface 36, and the drawing action and the drawing action mutually reinforce each other, making their actions more effective. Moreover, since the pulling portion 22 is backed up, its strength is improved, and the pulling mechanism does not require pins, cam grooves, etc., and can be simplified in structure and processing.

[Brief explanation of the drawing]

1 to 7 relate to an embodiment of the present invention, in which FIG. 1A is a vertical side view of a simple lock attached to a sliding door in an unlocked state, FIG. 1B is a vertical sectional plan view of the same, Fig. 2 is a vertical side view with the locking body moved backward, Fig. 3 A is a longitudinal side view with the locking body in the same locked state, Fig. 3 B is a longitudinal cross-sectional plan view with the locking body in the same locked state, and Fig. 4 The figure is an exploded perspective view of the simple lock, Figure 5 is a front view of the simple lock attached to a sliding door, Figure 6 A and B are illustrations of the action of the draw part, and Figure 7 is an explanation of the shape of the cam surface. cross section,
FIGS. 8 and 9 are perspective views of a locked body according to different embodiments, and FIG. 10 is a perspective view of a locked body according to a different embodiment. 9... Simple lock, 10... Building opening, 11...
Front fitting frame, {11'...rear end surface}, 12...rear fitting frame, {12'...front end surface}, 13...sliding door,
14... Locking body, 15... Locked body, {15'...
rear end surface}, 21...drawing part, 22...pulling part,
23... Pressing surface, 33... Opening, 36... Pressed surface, 40... Cam surface.

Claims (1)

[Claims] 1. A locking body 14 is movably and rotatably held in the inner fittings frame 11 of a pair of sliding doors 13, 13 which are superimposed in the building's outward and outward directions and are opened and closed by movement in the sliding direction. A locked body 15 having an opening 33 through which the outer end of the locking body 14 can be inserted and removed is attached to the fitting frame 12, and the locking body 15 is eccentric from the rotational axis and eccentric to the rotational axis at the outer end of the locking body 14. A drawing part 21 is extended outward along the drawing part 21, a pressing surface 23 is formed at the most eccentric position from the rotation axis on the outer peripheral surface of the drawing part 21, and a pressing surface 23 is formed in the opening 33 of the locked body 15. When the drawing part 21 is inserted and rotated, it forms a pressed surface 36 that comes into contact with the pressing surface 23 and presses the pair of sliding doors 13, 13 in the closing direction, and causes the locking body 14 to draw. A drawing part 22 is extended from the outer end of the part 21 in a direction perpendicular to the rotation axis, and a contact surface 22a is formed on the surface of the drawing part 21 side of the drawing part 22, and When the drawing part 22 enters the outer surface of the body 15 through the opening 33 and is rotated, it forms a cam surface 40 that comes into contact with the contact surface 22a and presses the pair of sliding doors 13, 13 in the direction of close contact. The contact surface 22a is located on the opposite side to the pressing surface 23 of the drawing part 21 with respect to the rotation axis so that the pressed surface 36 also receives the pressing reaction force applied to the contact surface 22a of the drawing part 22. A simple lock for sliding doors.