JPS6241884A - Simple lock for double sliding door - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 hermetically closes the opening in the building by the sliding door. Concerning a simple lock that is easy to handle, yet crime-proof.

(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, methods for locking such sliding doors include those in which a male threaded body inserted and held in the front fitting frame is attached to a female threaded body fixed to the rear fitting frame, and a locking mechanism as shown in Fig. 21. A simple lock 5 is provided for inserting and locking a male body 2 rotatably supported on a side end surface 1'' of a front fitting frame 1 into a U-shaped female body 4 fixed to a side end surface 3'' of a rear fitting frame 3. be.

(Problems to be Solved by the Invention) When a sliding door is locked, it is desirable to prevent wind and rain from entering. To do this, it is necessary to weld the rear end surface of the front fitting frame and the front end surface of the rear fitting frame, and to press each sliding door in the closing direction to seal the opening. However, with conventional locking systems using screws, although it is possible to bring the rear end surface of the front fitting frame into close contact with the front end surface of the rear fitting frame, it is not possible to press each sliding door in the closing direction. . Therefore, in the simple lock 5 shown in FIG. 21, the peripheral edge 6 of the male body 2 inserted into the female body 4 is made wider as it is inserted, and the distance from the peripheral edge 6 to the center of rotation 7 is gradually shortened. The sliding doors 8, 8 are pressed in the closing direction and the fitting frames 1, 3 are brought into close contact. However, since the simple lock 5 is attached to the side end faces 1' and 3' of each fitting frame], 3, if transparent glass is used for the sliding doors 8, 8, the mounting position can be seen from the outside. The glass can be cut and the lock can be easily unlocked, which is not desirable from a security standpoint.

In view of the above, it is an object of the present invention to provide a simple lock that can lock a sliding door and close the opening in an airtight manner, is convenient to handle, and is highly crime-proof.

(Means for Solving the Problems) A common feature of the technical means taken by the inventions of the present application to solve the problems of the prior art is that the inventions are slidably attached to the building opening 10 and the opening 10 is A pair of front and rear sliding doors 13. having fitting frames 11 and 12 that overlap in the front and rear when closed. ], 3 simple lock 9,
It has a locking body 14 that is held on the front fitting frame 11 so as to be movable in the front and back direction and rotatable around its axis, and an opening 33 that is fixed to the rear fitting frame 12 and extends along the front end surface 12° of the fitting frame 12. and a locked body 15, the locking body 1
4, a draw part 21 and a draw part 22 are provided so that they can be retracted from the rear end surface 11'' of the front fitting frame 11 by a predetermined distance by moving the locking body 14 back and forth, and can be freely inserted into and removed from the opening 33. The part 21 has a pressing surface 23 that is eccentric from the center of rotation of the locking body 14, and the sliding portion 21 is rotated within the opening 33 of the part 21 to move the pair of sliding doors], 3, 1.3 in the closing direction. A pressed surface 36 is provided along the periphery of the opening 33, with which the pressing surface 23 comes into pressure contact as the pressing surface 23 rotates.

In addition to the above-mentioned common features, the first invention of the present application has the drawing part 22 rotate within the opening 33 to draw the locked object 15 between the rear end surface 11° of the front fitting frame 11 and the front end of the rear fitting frame 12. In order to make close contact with the surface 12', the front fittings frame 1
1. A locking body 1 facing the front end surface 1.1a and the core end surface 11a.
It has a feature that a cam surface 46 is formed which is interposed between the opposing surface 49 on the fourth side and guides the locking body 14 in the front and rear directions as the locking body 14 rotates.

In addition to the features common to the above two, the second invention of the present application has a pressing surface 23 and a pressed surface 36 in order to press the pair of sliding doors 1.3.13 within the sliding surface in a direction perpendicular to the sliding direction.
The pressing contact surface is a surface that is inclined with respect to the sliding direction and the direction orthogonal thereto within the sliding surface, and as the pulling portion 22 rotates within the opening 33, the locked object 15
A cam surface is formed that guides the locking body 14 in the front-back direction as it rotates in order to bring the rear end surface 11'' of the front fitting frame 11 and the front end surface 12'' of the rear fitting frame 12 into close contact with each other. Has characteristics.

In addition to the above-mentioned common features, the third invention of the present application has the drawing part 22
rotates within the opening 33, thereby drawing the locked object 15 between the rear end surface 11'' of the front fitting frame 11 and the rear fitting frame 1.
A cam surface is formed on the locking body 14 to guide the locking body 4 in the front-back direction as it rotates in order to bring the front end surface 12' into close contact with the front end surface 12'' of the locking body 14. is wound with a compression coil spring 28 that engages with the front fitting frame 11 side, and the front end side protruding end 28a of the spring 28 engages with the front fitting frame 1.1.
It is characterized in that it is inserted into the front-back groove 50 formed at +111 so as to be movable in the front-back direction and not rotatable in the center in the front-back direction.

(Function) As a common function of all the inventions, when a building opening is closed with a sliding door, the locking body held on the front fitting frame is moved rearward and then rotated around its axis of movement. ,
From the rear end surface of the front fitting frame, the pull-out part and the pulling part protrude and are inserted into the opening of the locked object, and the pull-out part and the pulling part rotate within the opening. In this case, since the pressing surface of the drawing part is eccentric from the rotation center of the locking body, the pressed surface provided along the opening periphery is moved in the closing direction of the pair of sliding doors to correspond to the eccentric dimension. It can be pressed.

The effect of the first invention is that in addition to the above-mentioned common effect, since the protruding dimension of the pulling part from the rear end surface of the front fitting frame is a predetermined size, the engagement between the front end surface of the front fitting frame and the front end surface facing the front fitting frame is Due to the cam surface interposed between the cam surface and the opposing part of the upper body, when the attracting part rotates within the opening, the object to be locked moves relatively toward the locking object. Thereby, the rear end surface of the front fitting frame and the front surface of the rear fitting frame can be brought into close contact. Also,
The engagement between the pulling part and the locked object maintains the engagement between the pressing surface of the pulling part and the pressed surface of the opening, and the sliding of the sliding door is regulated.

The action of the second invention is that in addition to the action common to the above two, the contact surface between the pressing surface and the pressed surface is a surface that is inclined with respect to the sliding direction and the direction perpendicular to this within the sliding surface of the sliding door. Therefore, when the pressing surface presses the pressed surface, pressing forces in two opposite directions perpendicular to the sliding direction can be applied to each of the pair of sliding doors within the slide I plane.

In addition, since the protruding dimension of the pulling part from the rear end surface of the front fitting frame is set to a predetermined size, the pulling part is held within the opening by the cam surface that guides the locking body in the front and back direction as it rotates. When rotated, the locked object moves relatively toward the locked object. Thereby, the rear end surface of the front fitting frame and the front end surface of the rear fitting frame can be brought into close contact.

The engagement between the pulling part and the locked object maintains the engagement between the pressing surface of the pulling part and the pressed surface of the opening, and the sliding of the sliding door is regulated.

The effect of the third invention is that in addition to the above-mentioned common effect, similar to the effect of the second invention, since the protruding dimension of the pulling part from the rear end surface of the front fitting frame is a predetermined dimension, the locking body When the attracting portion rotates within the opening, the cam surface moves forward and backward with the rotation of the cam surface, causing the object to be locked to move relatively toward the locking object. This allows the rear end surface of the front fitting frame and the front end surface of the rear fitting frame to be brought into close contact. In addition, due to the engagement between the drawing portion and the locked object, the engagement between the pressing surface of the drawer and the pressed surface of the opening is maintained, and the sliding of the sliding door is regulated.

Furthermore, as a unique action, the elasticity of the compression coil Z wound around the locking body moves the locking body forward and into the unlocked state simply by changing the rotational position of the locking body from the locked state to the unlocked state. It can be done.

In addition, the front end of the coil spring engages with the locking body and the rear end engages with the front fitting frame, so when the locking body is rotated when locking, the front end of the coil spring is rotated and the coil spring is twisted. The force that tries to act acts. As a result, when the coil spring is twisted, the coil spring attempts to return to its original state from the twisted state, producing a rotational force that attempts to rotate the locking body in the unlocking direction. Then, even if a slight vibration is applied to the sliding door, there is a risk that the locking body will rotate and unlock. However, because the front free end of the coil spring is inserted into the groove on the front fitting frame in a non-rotatable manner in the longitudinal direction, the coil spring will not be in the above-mentioned torsion state and will not be unlocked accidentally. do not have.

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

1 to 20 relate to an embodiment of the present invention, in which reference numeral 9 denotes a simple lock made of a steel layer, and as shown in FIG.
It is attached to a pair of sliding doors 13, 13, which are attached to the sliding door 0 so as to be slidable in the left and right directions.

Each sliding door 1.3.13 has a fitting frame 11.12 which overlaps from front to back when the opening 10 is closed. In this embodiment, the front means the indoor side. In addition, it may be attached to a sliding door that can be slid vertically.

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 rear directions and rotatable around its axis, and a locking body 14 which is fixed to the rear fitting frame 12 and has a front end surface 12 of the fitting frame X2.
The locked body 15 has a gate 33 along the angle.

The locking body 14 is a bar material, and by bending the rear end, a drawing part 2 eccentrically parallel to the center of the locking body 14 is formed.
1, the pull gl! is drawn perpendicularly from the tip of part 21. 2
2 is formed. Here, the side surface of the part 2 that is most eccentric in the radial direction from the center of rotation of the locking body 14 is a pressing surface 23.

The locking body 14 is held on the front fitting frame 11 via the holding cylinder 24 and the knob 19.

As shown in FIGS. 9 to 13, the holding cylinder 24 has a mounting flange 25 at the front end, and a rear part that is connected to the part 21 when the locking body 14 is inserted into the holding cylinder 24. Part 22
A groove 43 is provided along both side surfaces of the plate.

Further, the inner diameter of the holding cylinder 24 is reduced in diameter by providing a stepped portion 45 in the middle.

Furthermore, a pair of cam surfaces 46 are formed on the front surface of the mounting flange 25 at two opposing positions along the opening periphery of the cylindrical body 24 . The cam surface 46 is inclined gradually from the rear to the front in a circular direction, and has a flat front surface, and a regulating surface 48 orthogonal to the cam surface 46 is formed at the end of the flat surface.

The knob 19 has a box-shaped portion 19a at the front and a cylindrical portion 19b at the rear. Further, an abutting portion 19c with the cam surface 46 is formed at a position facing the outer periphery of the front end of the cylindrical portion 19b.

The locking body 14 is held by the holding cylinder 24 and the knob 19 by loosely inserting the locking body 1 into the holding cylinder 24 from the rear, and then inserting the compression coil spring 28 into the holding cylinder 24 from the front. Insert it and wrap it around the locking body. At this time, the rear end of the spring 28 engages with the stepped portion 45. Then, the cylindrical portion 19b of the knob 19 is loosely inserted into the holding cylinder 24 from the front. The front end of the spring 28 engages with the rear end of this cylindrical portion 19b. Then, when the screw 20 is inserted into the box-shaped portion 19a of the knob 19 and presses the locking body 14, the knob L7j19 and the locking body 14 are integrated. Then, the holding cylinder 24 is inserted into the mounting hole 47 penetrating the front fitting frame 11 in the front-rear direction, and the mounting flange 25 is attached to the front end surface 11a of the front fitting frame 1 by the pair of screws 3], 31. Fixed. Here, the front surface of the mounting flange 25 is flush with the front end surface 1a of the front fitting frame, and forms part of its front end surface 11a.

As a result, the locking body 14 is held by the front fitting frame 11 so as to be movable in the front and rear directions and rotatable around its axis.

Here, the forward movement of the locking body 14 is restricted by the front end of the portion 21 coming into contact with the stepped portion 45 of the holding cylinder 24 . At the forwardmost position, the drawing part 21 and the drawing part 22 are retracted from the rear end surface 11' of the front fitting frame 11. At this time, the dividing groove 43 runs along both sides of the pull portion 21 and the pull g (!22), so the locking body 14 is restrained so as not to rotate.

The rear end surface of the box-shaped portion 19a of the knob 19 is a facing surface 49 that faces the front surface of the mounting flange 25, which is a part of the front end surface 11a of the front fitting frame 11. By abutting against each other, backward movement of the locking body 14 is restricted. As a result, the draw section 21 and the pull section 22 can freely move in and out of the rear end surface of the front fitting frame 11 by a predetermined distance.

Here, when the locking body 14 moves rearward, the coil spring 28 is compressed and urges the locking body 14 forward. The free end 28a on the front end side of the coil spring 28 is bent radially outward, and is inserted into a longitudinal groove 50 formed on the inner surface of the holding cylinder 24 on the front fitting frame 11 side so that it can move freely in the longitudinal direction and cannot rotate around the longitudinal direction. It has been inserted.

Next, as shown in FIG. 8, the locked body 15 has a rectangular plate shape and has a rectangular opening 33 in its center.

Then, the locked body 15 is fixed via screws 34, 34 along the front end surface 12' of the rear fitting frame 12 so that the opening 33 is located at a position corresponding to the longitudinal movement axis of the locking body 14. ing. Here, the rear part of the opening 33 of the rear fitting frame 12 is hollowed out to form a recess 35.

Thereby, the draw part 21 and the draw part 22 can be freely inserted into and removed from the opening 33 by protruding and retracting from the rear end surface 11' of the front fitting frame 11.

Then, due to the rotation of the portion 21 within the opening 33, the pressed surface 36, which the pressing surface 23 comes into pressure contact with, is pressed against the opening 33.
along the longitudinal periphery-side.

In this embodiment, a protruding wall 37 is provided to protrude rearward from the peripheral edge side, and its inner wall surface is used as the pressed surface 36. Without providing such a protruding wall 37, the inner circumferential wall surface of the opening 33 is connected to the pressed surface 3.
It may be set to 6. However, by providing the protruding wall 37 as in this embodiment, the contact area with the pressing surface 23 becomes larger, and a stable and large pressing force is generated.

Further, the pressed surface 33 is inclined with respect to the sliding direction and a direction perpendicular thereto within the sliding surface of the sliding doors 13, 13. Moreover, the inclination angle θ of the pressed surface 36
Correspondingly, the surface of the holding cylinder 24 facing the groove 43 is also inclined in the same direction at an angle of inclination θ.

The rear end surface 15 of the locked body 15 has a pressed surface 36.
A cam surface 40 is formed along the periphery of the opening 33 on the opposite side. The cam surface 40 is bulged in a chevron shape from the rear end surface 15'' of the locked body 15, and the central portion is flat.
The portion 3 Ill is a guide surface 40a that is gradually thinned and inclined toward the opening 33 side.

Next, the locking and unlocking functions of the simple lock 9 will be explained.

First, to lock the lock, hold the knob 19 and move the locking body 14 in the unlocked state shown in FIGS. 1 and 2 backward, and then
As shown in the figure, the drawing part 21 and the drawing part 22 are connected to the opening 3.
It is inserted into 3.

Next, turn the knob 19 clockwise 90 degrees toward the sliding door 13. Then, the attracting portion 22 rotates within the opening 33 and is guided above the center of the cam surface 40. Furthermore, the abutting portion 19c of the knob 19 is also connected to the cam surface 46 on the front surface of the mounting flange 25.
The rotation of the locking body 14 is restricted by being guided by the upper G and coming into contact with the restriction surface 48 . Then, since the protrusion dimension of the drawing portion 22 from the rear end surface of the front fitting frame 11 is regulated to a predetermined dimension, the locked object 15 is relatively drawn toward the locking object 14 side.

Therefore, the rear end surface 11' of the front fitting frame 11 of the pulling part 22
A predetermined dimension corresponding to the sum of the bulging dimension of the cam surface 40 from the rear end surface 15 of the locked body 15 and the bulging dimension of the cam surface 46 from the front end surface of the front fitting frame 11. By doing so, 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. The engagement between the pulling portion 22 and the locked object 15 restricts the sliding of the sliding doors 13, 13, resulting in a locked state.

Note that since the cam surface 40 of the locked body 15 is formed with a guide surface 40a that is inclined toward the opening 33, the drawing portion 22
is said to be easily guided to the center of the cam surface 40.

By rotating the knob 9, the draw portion 21 also rotates within the opening 33. Then, as shown in FIGS. 19 and 20, the pressing surface 23 presses the pressed surface 36, thereby releasing the locking body 14.
The eccentric dimension X from the rotation center 38 to the pressing surface 23 and the sliding direction Y from the rotation center 38 to the pressed surface 36
The locking body 14 and the locked body 15 will relatively slide in the left-right direction by %Z.

As a result, the sliding doors 13.13 can be pressed in the closing direction and the building opening 10 can be sealed.

In addition, since the grooves 43 of the holding cylinder 14 located on both sides of the pulling part 22 and the pulling part 21 in the unlocked state are inclined as described above, when the locking body is rotated 90 degrees, Pressure surface 2
Similar to the pressed surface 33, 3 is a surface inclined in the sliding direction and a direction perpendicular thereto within the sliding surface of the sliding doors 1.3, 13. Therefore, the pressing surface 23 and the pressed surface 33
The contact surface with the sliding door 1.3.13 is also a surface that is inclined in the sliding direction and a direction perpendicular to this sliding surface. As a result, when the pressing surface 23 presses the pressed surface 33 and seals the building opening 10 in the sliding direction, forces in two contradictory directions perpendicular to the sliding direction within the sliding surface are -
This acts on each of the sliding doors 13.13 of Thus, the building opening 10 can be more completely sealed without the sliding doors 13, 13 shaking up and down.

Next, to unlock the simple lock 9, press the knob 19 on the sliding door 1.3.
．． Just rotate it 90 degrees counterclockwise toward 13. Then, the locking body 14 is moved forward by the elastic force of the coil spring 28, and becomes unlocked.

Here, the coil spring 28 has its front end surface engaged with the rear end surface of the knob X9 integrated with the locking body 14, and its rear end surface engaged with the holding cylinder 24 attached to the front fitting frame 11, respectively. Therefore, when the locking body 14 is rotated during locking, a force acts on the coil spring 28 to rotate its front end side and put it in a torsion state. When the coil spring 28 is twisted by this force, the coil spring 28 tries to restore its original state from the twisted state, and generates a rotational force that tries to rotate the locking body 14 in the unlocking direction. Then, a slight vibration may be applied to the sliding doors 1.3.1.3, which may cause the locking body 14 to rotate and become unlocked, which is unfavorable in terms of security. However, the front free end 28 of the coil spring 28
Since the coil spring 28 is inserted into the groove 50 and cannot be rotated in the front-rear direction as described above, the coil spring 28 will not be in a stiff state and will not be unlocked accidentally.

(Effects of the Invention) According to the first invention of the present application, the mounting position of the simple lock is blocked by the rear fitting frame and cannot be seen from the outside, which is excellent in terms of crime prevention. Also, when the locking body is rotated to the locked state, the sliding door is pressed in the closing direction by the press contact between the pressing surface of the part and the locked body, and the locking body is closed via the cam surface. When the pulling part pulls the object to be locked by the movement, the rear end surface of the front fitting frame and the front end surface of the rear fitting frame are brought into close contact with each other, and as a result, the building opening can be closed in an airtight manner by locking the sliding door. .

According to the second invention of the present application, in addition to the effects of the first invention, the pressing contact surface between the pressing surface and the pressed surface is a surface that is inclined with respect to the sliding direction and the direction perpendicular thereto within the sliding surface. This allows the sliding doors to be moved relative to each other within the sliding plane in a direction perpendicular to the sliding direction, thereby creating a more complete seal on the opening in the building and reducing backlash when the sliding doors are locked. You can get rid of stickiness.

According to the third invention of the present application, in addition to the effects of the first invention, the locking body is rotated when unlocking due to the elasticity of the coil spring whose rear end engages with the front fitting frame side and whose front end engages with the locking body side. Just by moving the locking body forward, the locking body can be placed in the unlocked state, making it convenient to handle. Moreover, the free end of the front end of the coil spring is inserted into the groove on the front fitting frame side and cannot rotate in the front-rear direction, so the front end of the coil spring will not be twisted by the rotation of the locking body. The locking body is not rotated by the torsional action of the coil spring, and will not be unlocked even if it is subjected to vibrations.

[Brief explanation of the drawing]

1 to 20 relate to an embodiment of the present invention, in which FIG. 1 is a plan sectional view of the simple lock in an unlocked state, FIG. 2 is a sectional view of the same side,
Fig. 3 is a plan sectional view of the simple lock with the locking body moved backward, Fig. 4 is a sectional view of the same side, Fig. 5 is a plan sectional view of the simple lock in the locked state, and Fig. 6 is a plan sectional view of the simple lock in the locked state. 7 is an exploded perspective view of the simple lock, Figure 8 is a front view of the simple lock attached to a sliding door, Figure 9 is a front view of the holding cylinder, and Figure 10 is a side view of the same. ,
Fig. 11 is a rear view of the same, Fig. 12 is a plan view of the same, Fig. 13 is a bottom view of the same, Fig. 14 is a side view of the knob, Fig. 15 is a rear view of the same, and Fig. 16 is a front view of the compression coil spring. , Fig. 17 is a side view of the same, Fig. 18 is a perspective view of the locked object, Figs. 19 and 20 are explanatory diagrams of the action of the draw part, and Fig. 21 is a perspective view of a simple lock according to the conventional example. It is a diagram. 9...Simple lock, 10...Building opening, 11...Front fittings frame, (11a...front end surface, 11'...rear end surface), 12...rear fittings frame (12゛...rear end surface)
, 13... Sliding door, 14... Locking body, 15...
Locked object, 21... Pulling part, 22... Pulling part,
23... Pressing surface, 28a... Compression coil spring (28
a... front m full free end), 33... opening, 3
6... Pressed surface, 40... Cam surface, 46... Cam surface, 49... Opposing surface, 50... Front-rear direction groove.

Claims (1)

[Scope of Claims] 1. A pair of front and rear sliding doors 13, 1 having fitting frames 11, 12 that are slidably attached to a building opening 10 and overlap with each other when the opening 10 is closed.
3, the locking body 1 is held in the front fitting frame 11 so as to be movable in the front and rear directions and rotatable around its axis.
4, and is fixed to the rear fitting frame 12 and the fitting frame 1
2. A locked body 15 having an opening 33 along the front end surface 12'.
The locking body 14 has a drawing part 21 and a drawing part 2.
2, the front fitting frame 11 is moved by the front and back movement of the locking body 14.
The drawing part 21 has a pressing surface 23 that is eccentric from the center of rotation of the locking body 14, and is provided so as to be able to protrude and retract from the rear end surface 11' by a predetermined distance and to be inserted into and removed from the opening 33. A pair of sliding doors 13, 13 by rotation within 33
A pressed surface 36 is provided along the periphery of the opening 33, with which the pressing surface 23 comes into pressure contact as the pressing surface 23 rotates in order to press the object in the closing direction. 15 and the front fitting frame 11 rear end surface 1
1' and the front end surface 12' of the rear fitting frame 12, the locking plate is interposed between the front end surface 11a of the front fitting frame 11 and the opposing surface 49 on the side of the locking body 14 opposite to the front end surface 11a. body 14
A simple lock for a sliding door, characterized in that a cam surface 46 is formed to guide the sliding door in the front-rear direction as it rotates. 2. A pair of front and rear sliding doors 13, 1 that are slidably attached to the building opening 10 and have fitting frames 11, 12 that overlap front and back when the opening 10 is closed.
3, the locking body 1 is held in the front fitting frame 11 so as to be movable in the front and rear directions and rotatable around its axis.
4, and is fixed to the rear fitting frame 12 and the fitting frame 1
2. A locked body 15 having an opening 33 along the front end surface 12'.
The locking body 14 has a drawing part 21 and a drawing part 2.
2, the front fitting frame 11 is moved by the front and back movement of the locking body 14.
The drawing part 21 has a pressing surface 23 that is eccentric from the center of rotation of the locking body 14, and is provided so as to be able to protrude and retract from the rear end surface 11' by a predetermined distance and to be inserted into and removed from the opening 33. A pair of sliding doors 13, 13 by rotation within 33
A pressed surface 36 is provided along the periphery of the opening 33, with which the pressing surface 23 comes into pressure contact as it rotates, in order to press the sliding doors 13, 13 in the sliding direction within the sliding surface. In order to press in a direction perpendicular to the opposite direction, the pressing surface between the pressing surface 23 and the pressed surface 36 is a surface that is inclined with respect to the sliding direction and the direction perpendicular thereto within the sliding surface, and the drawing portion 22 is As the locking body 14 rotates within the opening 33, the locking body 14 is rotated to draw the locked body 15 and bring the rear end surface 11' of the front fitting frame 11 and the front end surface 12' of the rear fitting frame 12 into close contact. A simple lock for a sliding door characterized by being formed with a cam surface that guides in the front and back direction. 3. A pair of front and rear sliding doors 13, 1 that are slidably attached to the building opening 10 and have fitting frames 11, 12 that overlap front and back when the opening 10 is closed.
3, the locking body 1 is held in the front fitting frame 11 so as to be movable in the front and rear directions and rotatable around its axis.
4, and is fixed to the rear fitting frame 12 and the fitting frame 1
2. A locked body 15 having an opening 33 along the front end surface 12'.
The locking body 14 has a drawing part 21 and a drawing part 2.
2, the front fitting frame 11 is moved by the front and back movement of the locking body 14.
The drawing part 21 has a pressing surface 23 that is eccentric from the center of rotation of the locking body 14, and is provided so as to be able to protrude and retract from the rear end surface 11' by a predetermined distance and to be inserted into and removed from the opening 33. A pair of sliding doors 13, 13 by rotation within 33
A pressed surface 36 is provided along the periphery of the opening 33, with which the pressing surface 23 comes into pressure contact as the pressing surface 23 rotates in order to press the object in the closing direction. 15 and the front fitting frame 11 rear end surface 1
1' and the front end surface 12' of the rear fitting frame 12, a cam surface is formed to guide the locking body 14 in the front and back direction as it rotates, and the front end surface of the locking body 14 is A compression coil spring 28 whose rear end surface engages with the front fitting frame 11 side on the 14 side
is wound around the spring 28, and the front free end 28a of the spring 28 is inserted into a longitudinal groove 50 formed on the front fitting frame 11 side so as to be movable in the longitudinal direction and non-rotatable in the longitudinal direction. A simple lock for sliding doors.