JPH0743400Y2 - One-piece sliding door lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a locking device for locking a single sliding door.

[Prior Art] A conventional single-sliding door lock is generally known as a simple latch type, and as shown in FIG. 7, a latch 140 pivotally supported on the sliding door is provided, and a spring is provided. The member 130 is configured so that it can take two stable positions under elastic pressure,
Lever 160 is laid down and the latch 1 shown by the chain double-dashed line
At the position of 40, the hook claw piece at the tip is hooked on the locking metal fitting 110.

[Problems to be Solved by the Invention] A conventional sliding door lock of this type is overhanging on the surface of the sliding door, which interferes with the operation of the sliding door and has a defect that is unfavorable in appearance. It is incomplete as a lock, because it lacks the certainty and firmness of the lock, and there is a possibility that a thin plate will be inserted from the gap created in the sliding door and door stop butting and the latch will be pushed up, etc. There were many things.

That is, in such a conventional latch-type locking device, the locking operation shaft and the rotation shaft of the latch are substantially coaxial, and there is reversibility that can be mechanically operated from the side of the latch. Therefore, the locking operation shaft and the latch rotation shaft are separated from each other,
A more reliable lock can be achieved by connecting these parts by a mechanism that does not allow reverse operation. The invention of the present inventor based on this is disclosed in Japanese Utility Model Publication No. 55-5632.However, since the spring member is a constituent element of the single-sliding door lock disclosed here, metal fatigue of the spring member over time There was a problem with durability.

Further, in the invention of Japanese Utility Model Publication No. 55-5632, it is necessary to simultaneously control the relative positions of the two constituent members, that is, the hook claw piece and the restraining member that operates the hook claw piece, because of the structure thereof. The member was not necessarily good in productivity because two differently shaped cam plates were integrally fixed so as to face the hook claw piece and the restraining member, respectively.

An object of the present invention is to provide a sliding door lock with high durability and high productivity by avoiding the use of a spring member and simplifying the structure of a single-sliding door lock that is small and has a favorable storability. It is what

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, a hook member that is rotated and locked between a sliding door and a door stop is linearly reciprocated by a guide member. An operating member that is pivotally supported by the moving bearing member, moves the hook claw pieces forward and backward along the moving direction on the moving bearing member, and rotates in the locking direction when moving forward and in the unlocking direction when moving backward. Provided.

And in order to regulate the most advanced position of the moving bearing member,
A member for preventing the moving bearing member from advancing with respect to the guide member is provided, and the hook claw pieces are respectively moved in the locking and unlocking directions by the forward force of the operating member toward the most forward position or the backward acting force from the most forward position. By providing an abutting member that enables rotation and at the retracted position of the operating member other than these, an abutting member that blocks the rotation of the hook claw piece is applied, and the acting force on the hook claw piece is governed by the forward and backward movement of the operating member. I did it.

[Operation] All of the mechanical parts that make up the lock are stored in the vicinity of the side edges of the sliding doors, and the fixed doors, such as the frame and the pillar, are fixed to each other. A recess that receives the piece and a locking metal fitting that engages with the claw piece are embedded.

On the contrary, it goes without saying that the mechanism portion may be provided on the fixed side such as a frame or a pillar that serves as a door stop, and the locking metal fitting may be embedded on the sliding door side.

When locking, the sliding door is closed and the exposed front surface of the sliding door lock is brought into close contact with the locking metal fitting on the door contact surface.

According to the present invention, after the close contact, the hook member is first pushed and protruded outward from the storage position by the operating member. The claw pieces are
The operation member is prevented from rotating in the retracted position, and the moving bearing member that pivotally supports the hook member is configured to linearly move inside the guide member. , The hook claw piece together with the moving bearing member,
It moves forward linearly from the storage position toward the outside of the sliding door side edge. In the process of the movable bearing member projecting and advancing from the guide member and further passing through the locking fittings provided on the door contact surface to reach the most advanced position, the hook claw pieces in the restrained state are released and rotated,
The subsequent movement of the moving bearing member is blocked by the blocking member, and the subsequent pressing operation of the operating member acts to rotate the hook claw piece. A lock is achieved by the rotation of the claw piece.

When unlocking, when the operating member is pulled back in the direction in which the hook claw piece is pulled into the storage position, the hook claw piece first rotates in the unlocking direction opposite to the locking direction described above, and the hook claw piece moves to the moving bearing member. When the rotation is blocked at the rest position where it comes into contact with the abutment surface, the subsequent pullback operation acts to pull the hook claw piece into the sliding door together with the moving bearing member, and the hook claw piece remains returned to the storage position. It is pulled back together with the moving bearing member to return to the unlocked position.

As described above, since a member such as a spring member that utilizes a stored force is not provided inside the mechanism, there is no tendency for metal fatigue or creep of the spring member to change over time or to promote wear, and The durability, which is important as a function, is significantly improved.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. The sliding door lock according to the present invention is basically arranged in the sliding door away from the pivot shaft 38 of the hook claw piece 40 and the operation shaft for locking (center of a square hole 64 described later). An unlocking operation member is connected to the square hole 64 of the cam plate 60, and this locking operation member is rotated and operated from the outside by a knob or a key (not shown).

FIG. 1 is an exploded perspective view of a sliding door lock according to the present invention. Reference numeral 10 denotes a locking metal piece embedded in the door stop 2, which has a hollow box portion 18 embedded to secure a space for receiving the hook portion 45 of the hook claw piece 40 at the time of locking and a hook claw piece 40 having a hook portion 45. Including the fixing plate 12 for hooking the end portion of, the hollow box portion 18 is embedded so that the surface of the fixing plate 12 is flush with the surface of the door stop 2, and the flat screw is screwed into the hole 16 to fix the surface. Fix it on the same plane as the door stop surface. Reference numeral 14 designates a hook claw piece 40 and a moving bearing member 30 pivotally supporting the hook claw piece 40.
Is an insertion hole into which the outer end of is inserted.

Inside the sliding door 1, an inner guide surface of a guide cylinder 28 that forms an insertion hole 14 for two doors and a guide member 20, facing the locking metal fitting 10.
In order to align 24 with the guide member 20, the fixing plate 22 has its surface flush with the mounting surface of the sliding door 1, and the hole 26
A flat head screw is screwed into and the surface of the fixed foot plate 22 is fixed flat so that the surface is flush with the side end surface of the sliding door 1.

The outer shape of the cylindrical body 34 that constitutes the moving bearing member 30 that holds the hooked claw piece 40 has a box shape, is fitted to the inner guide surface 24 of the guide member 20 and is slidable smoothly, and its rear end Blocking members 32, 32 are projected on the upper and lower outer surfaces of the portion. When the moving bearing member 30 projects toward the hollow box portion 18 having two door stops, these blocking members 32 come into contact with the end surface of the guide cylinder 28 to limit and restrain the movement of the moving bearing member 30. .

The moving bearing member 30 has bearing holes on the opposite side walls of the cylindrical body 34.
36, 36 are bored, the pivot shaft 38 which is inserted through these and spans between both side walls is inserted into the shaft hole 46 of the hook claw piece 40, and the hook claw piece 40 is pivotally supported. . In addition, the lower surface of the front end of the inner peripheral surface 35 of the movable bearing member 30 forms a contact surface at the rest position of the hook claw piece 40, and contacts the lower surface 42 of the hook claw piece 40 when the hook claw piece 40 moves backward. The excessive rotation of the hook claw piece 40 is restricted. In this rest position, the top surface 41 of the hook claw piece 40 is flush with the upper outer surface of the tubular body 34 of the moving bearing member 30, and protrudes into the notch 33 of the tubular body 34 to guide the inner guide surface of the guide member 20. When the hook claw piece 40 is in contact with the upper surface of 24 and moves forward together with the moving bearing member 30, the upper surface of the inner guide surface 24 serves as a contact surface for preventing rotation of the hook claw piece 40.

The hook claw piece 40 has an engaging claw 44 formed below a shaft hole 46 formed at a position distant from the hook 45, and a slope 43 is formed forward from the base of the engaging claw 44. A concave portion 47 is formed below the shaft hole 46 by the inner side of the engaging claw 44 and the slope portion 43. With respect to this recess 47, an action piece 54 folded up at the tip of the operation member 50 fitted in the box-shaped moving bearing member 30 is interposed, whereby the action piece 54 is
The inclined surface 43 forming the concave portion 47 is pressed, and the hook claw piece 40 is pushed and rotated. When unlocked, the hook claw piece is engaged with the engaging claw 44.
It functions to pull the moving bearing member 30 together with 40.

Therefore, the body portion 52 of the operation member 50 is fitted so as to be in sliding contact with the inner surface 35 of the movable bearing member 30 and the pin 58 inserted into the shaft hole 56 provided at the rear end of the body portion 52 has the cam plate 60. The cam plate 60 is engaged by intervening in the curved groove 62. The cam plate 60 is formed with the above-described square hole 64, and the operation member of an external locking device (not shown) is connected to the central axis of the square hole 64 to rotate the cam plate 60.

The curved groove 62 of the cam plate 60 is divided into three sections A-B, B-C, and C-D in the figure. Of these, the groove in the section A-B and C-D is Since the cam plate 60 also has an arc that is equidistant from the rotation center P of the cam plate 60, the pin 58 intervening in the curved groove 62 can be displaced by the rotation of the cam plate 60 in any of these groove sections. Since it does not exist, neither the pressing action nor the pulling action occurs on the operation member 50. Therefore, as long as the pin 58 fitted in the curved groove 62 is in these sections, it maintains a rest state with respect to all the operating systems regardless of the rotation of the cam plate 60.

On the other hand, when the pin 58 is in the BC section of the curved groove 62, the curved groove 62 gradually increases the distance from the rotation center P of the cam plate 60 from the B point to the C point. The pin 58 intervening in the curved groove 62 in B-C in the section moves linearly as the cam plate 60 rotates. Therefore, when the cam plate 60 rotates to pass the section BC of the curved groove 62 with respect to the pin 58, the operating member 50 holding the pin 58 is guided by the moving bearing member 30 and moves forward and backward. Will move.

Next, the locking operation of the above embodiment according to the present invention will be described with reference to FIGS.

The open sliding door 1 and the stationary door stop 2 as shown in FIG. 2 are locked to the outer surface of the fixed plate 22 of the sliding door lock 3 when the sliding door is butt-closed with the door stop 2 as shown in FIG. Metal fittings 10
The outer surface of the fixing plate 12 is closely attached. Here, the cam plate 60 as a locking member is rotated by a locking member (not shown), such as a knob or a key, provided outside through the square hole 64.
60 rotates in the direction of arrow a (counterclockwise) in the figure with the center p of the square hole 64 as the axis. At this time, the pin 58 is AB of the curved groove 62
While in the section, the operating member 50 does not move and remains stopped, but the rotation further advances and the curved groove 62 turns around the pin 58 as shown in FIG. When it reaches, the operating member 50 is pushed forward in the direction of arrow b (leftward) in the figure. At this time, the action piece 54 of the operating member 50 presses the slope 43 of the recess 47 of the hook claw piece 40 in the rest position, but the top surface 41 of the hook claw piece 40 is brought into contact with the inner guide surface 24 of the guide tube 28. Since the rotation is suppressed by the collision, the pressing force of the action piece 54 is initially the hook piece.
It only pushes 40 together with the moving bearing member 30 in the protruding direction. When the cam plate 60 is further rotated, the front part of the moving bearing member 30 which is moving enters through the insertion hole 14 of the locking metal fitting 10 and the hook claw piece.
The top surface 41 of 40 passes through the front end of the guide surface 24 and enters the hollow box portion 18 of the locking fitting 10, and the hook claw piece 40 is released from the above-described rotation restraining action. When the blocking members 32, 32 on the upper and lower surfaces of the moving bearing member 30 come into contact with the ends of the guide cylinder 28 and the forward movement is blocked, the movement of the operating member 50 thereafter causes As shown in FIG. 4, the action piece 54 pushes up the slope 43 forming the recess 47 of the hook claw piece 40 by the pressing action in the direction of the arrow d, and rotates the hook claw piece 40 in the direction of arrow e. Becomes The cam plate 60 rotates with respect to the pin 58 and the curved groove C-D
By the time the section reaches the position of the pin 58, the hook claw piece 40 rotates and the hook portion 45 rises, and the tip of the hook portion 45 crimps so as to hold the fixing plate 12 of the locking metal fitting 10 from the back surface. To do. Therefore, unless the cam plate 60 is operated to rotate it in the reverse direction, the sliding door 1 cannot be opened and the locking is completed.

In this locked state, as described above, the moving bearing member
Since the outer end projecting portion of 30 is fitted in the hollow box portion 18 of the door stop 2, even if a thin plate-like object is inserted in the slight gap between the sliding door 1 and the door stop 2, the hook claw piece 40 Cannot be directly moved, and the locked state by the hook claw piece 40 cannot be released.

Next, the unlocking operation will be described. In the locked state shown in FIG. 4, the cam plate 60 is rotated in the direction of the dotted arrow r (clockwise direction) in the figure. As a result, when the pin 58 is in the D-C section of the curved groove 62, the operating piece 54 does not move, so the operating member 50
However, the cam plate 60 rotates and the pin
On the other hand, when the section of the groove C-B turns around with respect to 58, the action piece 54 moves in the direction of the dotted arrow S in the figure (to the right) and abuts on the locking claw 44, so that the hook claw piece 40 moves along the dotted arrow w. Rotate in the direction of. As a result, the hook claw piece 40 is rotated to a rest position where the lower surface 42 of the hook piece 40 contacts the bottom surface of the inner surface 35 of the cylindrical body 34 of the movable bearing member 30, and returns to the same position as the state shown in FIG.

Fig. 5 shows the progress of the process and the cam plate 60.
When the rotation proceeds, the action piece 54 pulls the locking claw 44 and pulls it in the right direction, and pulls it back toward the inner part of the sliding door 1 together with the moving bearing member 30 that pivotally supports the hook claw piece 40, Curved groove for pin 58
When the section B-A of 62 arrives, the sliding door lock 3 is set in the complete storage position in the sliding door 1 shown in FIG. 2 and the unlocking operation is completed.

FIG. 5 shows that before the blocking member 32 hits the inner end surface of the guide cylinder 28 of the guide member 20 to prevent the movement of the moving bearing member 30 from being blocked, the top surface 41 of the hook claw piece 40 is moved to the guide member 20. Inner guide surface 24
When the action piece 54 is released from the upper surface of the concave portion 47 and presses the inclined surface 43 located in front of the recess 47 in the arrow d direction, the hook claw piece 40 is being rotated in the locking direction (arrow e direction in the drawing). , Action piece
54 shows the intermediate operation states of the case where the hook claw piece 40 of the hook claw piece 40 is pulled in the direction of the dotted arrow v and the hook claw piece 40 is rotated in the unlocking direction shown by the dotted arrow w. It is shown.

According to the gist of the present invention, such an operation of moving the operating member 50 back and forth is not limited to the cam mechanism described in detail in the above embodiment, but the link mechanism shown in FIG. The mechanism according to 70 may be used, and FIG. 6 (b)
Of course, the eccentric ring 80 as shown in FIG.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the illustrated embodiment, and the hook claw piece 40 is not limited thereto.
The engagement structure between the control member 50 and the operating member 50 can be arbitrarily changed, and for example, a correlatively linked connection structure using pins or pinions can also be applied.

[Effects of the Invention] As described above, the hook piece can be completely stored in the sliding door.
According to the one-piece sliding door lock of the present invention, which cannot be operated from the side of 40, the spring force of the spring member is not utilized inside this mechanism, so that metal fatigue or creep of the spring member can be avoided. There are no factors that cause a change or a tendency to accelerate wear, and durability, which is an important function of the lock, is significantly improved. Further, since the work of elastically assembling the energy storage member is not required at the time of assembly, the assembly work is facilitated.

Further, by providing the blocking member 32 that restrains the forward limit of the hook claw piece 40, the mechanism is simplified and reliability is increased, and various control member configurations are possible, which is suitable for the manufacturing site. Since the mechanism can be selected, it greatly contributes to the improvement of productivity.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of a single-sliding door lock according to the present invention, and FIG. 2 is a vertical sectional side view showing a state in which a single-sliding door lock provided with the single-sliding door lock according to the embodiment is opened. The figure shows the second
FIG. 4 is a vertical sectional side view when the cam plate is rotated halfway to close and lock the sliding door, FIG. 4 is a vertical sectional side view showing a state in which the sliding door lock has been locked, and FIG. Alternatively, FIG. 6 is a vertical sectional side view showing a progress state in the middle of unlocking, FIG. 6 is a vertical sectional side view of an embodiment using a control mechanism other than a cam plate, and FIG. 6 (a) illustrates a link ring mechanism. , FIG. 6 (b) illustrates an eccentric mechanism.
Further, FIG. 7 is a schematic view illustratively showing an example of a conventional latch type sliding door lock. 10 ... Locking metal fitting, 20 ... Guide member, 30 ... Moving bearing member, 32 ... Blocking member, 38 ... Pivot shaft, 40 ... Hook claw piece, 43
...... Slope, 44 ...... Engagement claw, 47 ...... Concave of hook claw piece, 50 ......
Operating member, 54 ... Working member of operating member, 58 ... Pin, 60 ...
… Cam plate, 62… curved groove

Claims (3)

[Scope of utility model registration request] 1. A hook claw piece which is rotated and locked between a sliding door and a door stop when locked, a moving bearing member for pivotally supporting the hook claw piece, and a guide for linearly reciprocating the moving bearing member. And a guide member for moving the hook claw piece forward and backward along the moving direction of the movable bearing member, and for rotating the hook claw piece in the locking direction during forward movement and in the unlocking direction during backward movement, respectively. And a member for preventing the moving bearing member from advancing relative to the guide member at the most advanced position of the moving bearing member, and at this most advanced position,
Provide a contact member that allows the hook claw pieces to rotate in the locking or unlocking direction by the action force of the operating member in the forward or backward direction, and that prevents the hook claw pieces from rotating in the other retracted positions. According to the above, the one-piece sliding door lock is characterized in that the acting force of the operating member on the hook claw piece acts in the forward and backward directions. 2. A hook claw piece which is rotated and locked between a sliding door and a door stop when locked, a moving bearing member pivotally supporting the hook claw piece, and a guide for linearly reciprocating the moving bearing member. And a guide member for moving the hook claw piece forward and backward along the moving direction of the movable bearing member, and for rotating the hook claw piece in the locking direction during forward movement and in the unlocking direction during backward movement, respectively. The hook claw piece is provided with an engaging claw on one side of the rotating shaft and a sloped part with the base of the engaging claw as a starting end on the other side, and the engaging claw and the sloped part are formed. A member for interposing the operating piece of the operating member in the formed concave portion to alternately engage the inclined surface portion and the engaging claw to prevent the moving bearing member from advancing relative to the guide member at the most advanced position of the moving bearing member. Is provided, and in this most advanced position,
Provide a contact member that allows the hook claw pieces to rotate in the locking or unlocking direction by the action force of the operating member in the forward or backward direction, and that prevents the hook claw pieces from rotating in the other retracted positions. According to the above, the one-piece sliding door lock is characterized in that the acting force of the operating member on the hook claw piece acts in the forward and backward directions. 3. A hook claw piece which is rotated and locked between a sliding door and a door stop when locked, a moving bearing member pivotally supporting the hook claw piece, and a guide for linearly reciprocating the moving bearing member. And a guide member for moving the hook claw piece forward and backward along the moving direction of the movable bearing member, and for rotating the hook claw piece in the locking direction during forward movement and in the unlocking direction during backward movement, respectively. And a member for preventing the moving bearing member from advancing relative to the guide member at the most advanced position of the moving bearing member, and at this most advanced position,
By the action force of the operating member in the forward or backward direction, the hook claw pieces can be rotated in the locking or unlocking direction, respectively, and at the other retracted positions, the guide member is rotated with respect to the rotation of the hook claw pieces in the locking direction. In addition, with respect to the rotation of the hook claw piece in the unlocking direction, the moving bearing members act as contact members that prevent the rotation of the hook claw piece, respectively, and the operating force of the operating member on the hook claw piece is increased. Single-sliding door lock characterized by acting in forward and backward directions.