JPH0321780A - Crescent lock - Google Patents

Abstract

PURPOSE:To obtain a lock of a high confidentiality by restraining the lock member of a crescent bar with fixing rings, and releasing the restraint of the lock member with the fixing rings by setting a dial to a specific releasing signal. CONSTITUTION:By rotating fixing rings 8-10 together with a dial shaft 7, and rotating a dial 6 in the order of a releasing number, fixing parts 66-69 of the fixing rings 8-10 are contacted, and the dial coincides with the releasing number to release the restraint of a lock member 5. By pushing an operational handle 5A to slide a click spring 16, to enter a link fixing pawl 44 to releasing notches 63-65, and at the same time, a lock piece 47 is removed from a hooking notch 42 of a coupling 4 making into a releasing condition, and a hooking member 3c is removed from a fixing metal 19. By turning the handle 3B of a lever 3 to the left side and pushing the operational handle 5A in the direction alpha(not shown in the figure), the lock piece 47 is inserted to the notch 42 of the coupling 4 to make a locked condition.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a crescent lock for attaching and locking fittings such as sliding sash doors.

(Industrial Application Field) -a, the sliding sash door is provided with a crescent lock.

Conventionally, in this type of crescent lock, a locking metal fitting is attached to one side of a sliding sash door, and a lock body with a rotatable crescent lever is attached to the other side, and the engaging part of the crescent lever is attached to the locking part. It is configured to be detachable from the stopper. The crescent lever is prevented from rotating by a locking member.

(Problem to be Solved by the Invention) By the way, since the above-mentioned conventional crescent lock does not have a means for restraining the sliding of the locking member, it is difficult to release the lock by freely pushing the lock operation lever. can. Therefore, if you try to unlock the door illegally from outside,
There is a problem in that the door can be easily unlocked by locally breaking the glass where the crescent lock is attached, operating the lock lever, and rotating the crescent lever.

The present invention was made in view of the above-mentioned circumstances, and
The purpose is to provide a dial type crescent lock in which the lock member does not come off and the crescent lever does not rotate and the lock cannot be unlocked unless the dial is set to a predetermined unlocking number.

(Means for Solving the Problems) In the present invention, the following measures were taken to achieve the above object.

That is, in the present invention, the engaging portion 3C of the crescent lever 3 rotatably attached to the lock body 2 attached to the fitting 20 etc. can be freely engaged and detached from the locking metal fitting l9 attached to the fitting 20 etc. In the crescent lock 1, a dial shaft 7 is provided at the center of rotation of the crescent lever 3, and the locking member of the crescent lever 3 is secured by locking rings 8 to 10 attached to the lock body 2 of the dial shaft 7. By aligning the dial 6 provided on the dial shaft 7 with a predetermined unlocking number, the locking rings 8 to IO are released, and the locking member 5 is removed and the lock can be unlocked. It is characterized by being made to be.

(Function) According to the present invention, by setting the dial 6 to a predetermined unlocking number, the restraint of the locking member 5 by the locking rings 8 to 10 is released, and the locking member 5 is moved in the longitudinal direction of the lock body 2. When the crescent lever 3 is unlocked by sliding, the crescent lever 3 becomes rotatable. therefore,
If the dial 6 is rotated arbitrarily after locking, only a person who knows the unlocking number can unlock the crescent lock.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. In the drawing, 1 is a crescent lock, which includes a lock body 2, a crescent lever 3, a coupling 4, a locking member 5, a dial 6,
Dial shaft 7, locking rings 8, 9, 10, spacer 1
) It consists of a click spring l2, a ring pressing spring 13, a lever positioning ball 14, a ball pressing spring 15, a lock click spring 16, a lock body mounting position adjusting fitting 17, a back cover 18, and a locking fitting 19. The lock body 2 is attached to the window frame sash 2OA that guards the fittings 20 (not shown).
The locking metal fitting 19 is fixed to the sash door 20B, which is a fitting.

As shown in FIGS. 1 to 1), the lock main body 2 is approximately rectangular when viewed from the front, and has a coupling fitting hole 21 in the center for a coupling 4 in the center front surface. The fitting portion 2A has a forwardly projecting shape, and a ball fitting recess 22 is provided on the front surface of the fitting portion 28 at a symmetrical position with respect to the fitting hole 21 at the center in the width direction. A rectangular fitter recess 23 of the locking member 5 is formed inside the back side of the cup link fitting portion 2A of the lock body 2, and a back cover l8 is fitted into the outer periphery of the back opening of the recess 23. A mounting recess 24 is provided, as well as a back cover mounting screw hole 25. In addition, a click spring engagement 826.21 is provided at the center of the inner surface of the same widthwise side of the candle member insertion recess 23 of the lock body 2, and the center portion of the other side wall is cut out to form a lock operation handle insertion window 28. being intimidated. Further, at both ends in the longitudinal direction of the lock body 2, horizontally elongated rectangular stepped mounting holes 29 are provided when viewed from the front, and a chevron-shaped uneven strip 30 is formed on the front surface of the stepped portion of the hole 29. A mounting position adjusting tool 17 shown in FIGS. 24 to 26 is fitted so as to be movable in the width direction.

As shown in FIGS. 2 and 12, the crescent lever 3 includes an attachment portion 3^ to the lock body 2, a handle 3B,
A retaining part 3C is formed of an arcuate curved part having a center of curvature at the center of the mounting part 3A, and a dial shaft loose fitting hole 31 is provided at the center of the mounting part 3A. A circular dial fitting recess 32 is formed in the holder.

Further, the shaft loose fitting hole 3 is provided at the center of the back surface of the mounting portion 3A.
A coupling fitting recess 33 is formed concentrically with the recess 33, and four engaging pin holes 34 are provided at equal intervals in the recess 33, and an engaging protrusion 35 is provided on the circumferential wall 338 of the recess.
It is located in the middle of 4 and protrudes. Further, on the back surface of the crescent lever 3, a ball fitting hole 36 is formed in the hole 31.
A coiled ball pressing spring 15 and a lever positioning ball l4 are provided in a symmetrical position to the handle 3B in the longitudinal direction of the handle 3B and corresponding to the ball fitting recess 22 of the lock body 2. .

As shown in FIGS. 13 to 15, the coupling 4 has a ring shape with a flange, a dial shaft fitting hole 37 is provided in the center, a flange 4A is protruded from the back end, and a flange 4A is provided on the front surface. Four retaining pins 38 are provided at equal intervals and correspond to the engagement pin holes 34 of the crescent lever 3, and the engagement recesses 3 are provided on the outer peripheral surface.
9 is provided in the middle of the engagement pin 38, and the recess 3
9, the engagement protrusion 35 of the crescent lever 3 is fitted into the engagement protrusion 35 of the crescent lever 3. The back surface of the coupling 4 serves as a click spring contact surface 40, and is provided with a large number of radial grooves 41, and the collar 4A is further provided with a locking member engaging notch 42.

The locking member 5 is shown in FIGS. 1, 9, 10, and 1.
As shown in Figures 6 and 17, the outer shape is approximately rectangular, with an operating handle 5A protruding from the center of one outer side, and a long length in the longitudinal direction (sliding direction indicated by arrows A and 1 in the figure). A hole 43 is provided in a penetrating manner, and a ring locking pawl 44 is protruded from the inner surface of the hole 43 at the center in the width direction on the same longitudinal side. Further, on the front surface 5B of the locking member 5, arc-shaped coupling restraining walls 45 and 46 are protruded from opposite sides on both sides in the longitudinal direction.
A crescent locking piece 47 that engages with the notch 42 of the coupling 4 projects from the inner surface of the blocking wall 46 on the opposite side from one of the locking claws 44 . Two locking grooves 48 for locking the lock click spring 16 are symmetrically provided on the outer surface of the lock member 5 on the side opposite to the operating handle 58. In addition, the lock member 5 has its back surface 5C.
The lock click spring 16 is adapted to slide on the inner surface of the back cover, and the lock click spring 16 is fitted into the locking groove 48 of the lock member 5 and the click spring engaging groove 26, 27 of the side wall of the lock member fitter recess 23. ing.

The dial 6 has a spline fitting hole 49 for the dial shaft 7 formed at the lower center, a fixing screw insertion hole 50 at the upper center, and a cap fitting recess 5l at the outer periphery of the hole 50. A cap 52 is fitted, and dial numbers (O to 9) 53 are provided on the outer circumferential surface of the cap 52.
is engraved.

The dial shaft 7 has a reduced diameter at the upper end and has a spline 54.
is fitted into the spline fitting hole 49 of the dial 6, and its position can be changed in the circumferential direction, and a locking groove 55 of a predetermined length is formed downward from the front side at a symmetrical position on the outer circumferential surface. A screw hole 56 for a fixing screw 56A is provided on the upper end surface. Then, the dial shaft 7
includes the locking ring 8.9.10, spacer 1),
A click spring 12 and a ring pressing spring 13 are externally fitted, and a locking protrusion 60. 61 and 62 are fitted into the locking groove 55 of the dial shaft 7 so as to be slidable in the axial direction. Therefore, each ring 8 to 10 is connected to a ring pressing spring 1 via a spacer 1).
3 is pressed against the dial shaft lower end flange 7A, and on the other hand, the click spring 12 is pressed against the click spring contact surface 40 provided on the back surface of the coupling 4, and the locking ring 8.9 prevents rotation and shaft rotation. It is possible to slide in any direction.

As shown in FIGS. 18 to 20, the locking rings 8 to 10 have a flat plate shape and have outer circumferential surfaces 8A, 9A, and IOA of the same diameter. Unlocking notches 63, 64, 65 are provided, and the locking ring 8 has locking portions 66, 67 that protrude radially outward from the outer circumferential surface 8A by a predetermined length over approximately half the circumference. ,
Similarly, the locking ring 9 is provided with projections on its outer peripheral surface 9A to form locking portions 68 and 69. These unlocking notches 6
The positions and intervals of the locking parts 3 to 65 and the locking parts 66 to 69 are formed corresponding to the engraving angle of the dial number 53, and many combinations of three-digit numbers can be provided.Furthermore, the locking ring 8 By changing the front and back sides of ~10, the number of combinations can be doubled.

Note that all of the unlocking notches 63 to 65 match when the unlocking number and the dial number match.

As shown in Fig. 1), the click spring 12 has a flat ring body with protrusions 128 in two directions on the outer periphery, and the protrusions 12A have a protrusion 70 projecting forward. is formed, and this protrusion 70 moves in and out of the groove 41 of the coupling 4, producing a clicking sound.

Further, as shown in FIGS. 22 and 23, the lock click spring 16 is shaped like a strip and has both longitudinal ends 16A.
are bent in the same direction, and a protrusion 16B is formed at the center in the longitudinal direction on the side opposite to the bending direction of both ends 16A, and as shown in FIG.
As the locking member 5 slides, the protrusion 16B moves in and out of the engaging groove 26, 27 of the lock body 2, producing a click sound, and the locking state and unlocking state of the locking member 5 are determined by sound. , can be checked from the outside.

The lock body mounting position adjusting tool 17 is shown in FIGS. 24 to 26.
As shown in the figure, the outer shape is rectangular, and the elongated hole 7l for inserting the mounting screw is stepped closer to the center than the center. It is formalized in the lA cover letter,
Both longitudinal ends of the elongated hole 71 on the back surface are notched in parallel, and anti-slip uneven strips 72 are provided on the back surface in parallel with the elongated hole 71. Therefore, the metal fitting 17 is movable in the width direction of the lock body 2 within the attachment hole 29 of the lock body 2, and is adapted to engage with the chevron-shaped uneven strip 30, so that the elongated hole 7l Since the lock body 2 is long in the longitudinal direction, it is possible to adjust the installation position in the longitudinal direction of the lock body 2, and the engagement part between the locking metal fitting 19 and the crescent lever 3 can be freely adjusted with respect to the window frame sash 2OA. The engagement state of 3C can be optimized.

The back cover 18 has a rectangular plate shape and has a dial shaft 7 and an insertion hole 73 in the center, and is fitted into the fitting recess 24 of the lock body 2.
It is detachably attached with screws 74.

The locking fitting 19 has a substantially key shape, and its base 19A is embedded and fixed in the sash door 20B so as to be parallel to the window glass 20C, and cannot be removed unless the sash door 20B is disassembled. .

Although the mounting screw of the lock body 2 is not shown, in the locked state, as is clear from FIGS. 1 to 5, the long hole 71 of the adjustment tool 17 is fitted into one of the mounting holes 29.
Since the operation handle 3B of the crescent lever 3 is located close to the front surface, even if the other mounting screw is removed, unless the crescent lever 3 is in the unlocked state, the lock body 2 cannot be attached to the window frame sash 20A or It cannot be removed from the fittings 2o such as the sash door 20B. Therefore, the lock body 2
It is also designed to prevent unauthorized removal.

According to the above-mentioned embodiment of the present invention, FIGS. , is engaged with the locking member engaging notch 42 of the coupling 4, and the ring locking pawl 44 is engaged with the locking member engaging notch 42 of the coupling 4, and the ring locking pawl 44 is engaged with the locking member engaging notch 42 of the coupling 4,
Since the locking member 5 is restrained by the outer circumferential surfaces 8A to IOA of Retained.

Therefore, when unlocking, when the dial 6 is rotated, the locking rings 8 to 10 and the spacer 1 are attached together with the dial shaft 7.
), the click spring 12 and the ring pressing spring 13 rotate simultaneously, and the dial 6 rotates the unlocking number in the specified direction.
rotate sequentially. At this time, a clicking sound is generated by the click spring 12, and one of the locking portions 66 to 69 of the locking rings 8 and 7 comes into contact with the ring locking pawl 44, and the dial 6 matches according to the unlocking number. Then, the unlocking notches 63 to 65 face the ring locking pawl 44, and the locking member 5 is released from its restraint and becomes slidable. Therefore, when the operating handle 5A is pushed in the direction of the arrow in the figure,
The lock click spring 16 slides together with the lock member 5 to produce a click sound, and at the same time the ring locking pawl 44 enters each of the unlocking notches 63 to 65, the lock piece 47 engages the coupling 4 in the engagement. The engaging portion 3C is released from the locking metal fitting 19 by escaping from the notch 42 and entering the unlocked state, and rotating the handle 3B of the crescent lever 3 in the direction shown by arrow 8 in FIG.

Note that when the locking portions 66 to 69 of the locking rings 8 and 9 come into contact with the ring locking pawl 44, the locking ring 8.9 is loosely fitted onto the dial shaft 7, and the spring 13 causes the spacer to 1), the dial 6 rotates freely because it is pressed against the locking ring 10 and rotates together. When the lock is in the unlocked state, the protrusion 16B of the lock click spring 16 is fitted into the click spring engagement groove 26 of the lock body 2, and the lock piece 47 is in contact with the outer peripheral surface of the collar 4A of the coupling 4. Therefore, the locking member 5 does not slide naturally, and the ring locking pawl 44 is fitted into the unlocking notches 63 to 65, so rotation of the dial 6 is prevented and the unlocked state is maintained. Therefore, there is no need to match the dial 6 with the unlock number when locking the door.

Next, when locking is to be performed, the handle 3B of the crescent lever 3 is rotated in the direction shown by arrow 2 in FIG. 2 to bring it into the state shown in FIG.
When B is pushed and slid in the direction of arrow A in the figure, the locking piece 47 is fitted into the notch 42 of the coupling 4 with a click sound, and the locking piece 47 is inserted into the locking state. Then, at the same time that the crescent lever 3 stops rotating, the ring locking pawl 44 escapes from the unlocking notches 63 to 65 of each locking ring 8 to 9, and the dial 6 becomes freely rotatable. 6 arbitrarily to unlock the locking rings 8 to 9.
3 to 65 are dispersed so that the ring outer circumferential surface 8A to IOA are opposed to the ring locking pawl 44, and even if the operation handle 5A is pushed in the direction of the arrow in the figure, the ring locking pawl 44 does not touch the ring outer circumferential surface. The locking operation is completed by making contact with 8A to IOA and preventing them from moving.

According to the above embodiment, the number of combinations of unlocking numbers can be doubled by using the front and back sides of each of the locking rings 8 to 10. Since the click springs 12 and 16 are provided, it is possible to confirm the rotation of the dial shaft 7 and the movement of the locking member 5, that is, the operation of the locked or unlocked state by making a sound. In addition, the structure is simple because it also serves to press the back of the dial 6 to the crescent lever 3. The locking member 5 also includes a locking and retaining ring 8 for the crescent lever 3.
Since the release of 9 to 9 or the reverse operation is performed at the same time, the operations are linked and performed smoothly and reliably. Since the locking rings 8 to 10 and the locking member 5 are arranged at the back end of the lock body 2, It is compact and the lock main body 2 can be made small, and it is easy to attach it to fittings 20 and the like. Furthermore, since the lock main body mounting position adjustment fitting 17 is provided, it is extremely easy to install the lock main body 2 and adjust the positional relationship between the engaging portion 3C of the crescent lever 3 and the locking fitting 19, and the lever positioning ball 14 can be adjusted with ease. Therefore, the crescent lever 3 can be reliably stopped at its locked/unlocked position.

In the above embodiment, the crescent lever 3 and the coupling 4 can be connected by a coupling means such as a screw.

Naturally, the present invention is not limited to the above embodiments.

(Effects of the Invention) As described above, the crescent lock according to the present invention has a dial shaft 7 equipped with a dial 6 at the center of rotation of the crescent lever 3, and the dial shaft 7 is mounted in the lock body 2. The locking members 5 of the crescent lever 3 are restrained by the locking rings 8 to 10, and by setting the dial 6 to a predetermined unlock number, the locking rings 8 to 10 are released. Since the lock can be unlocked by removing the member 3, the crescent lever 3 will not be unlocked or rotated unless the dial 6 is set to the predetermined unlock number, so the user does not know the unlock number. Even if the window glass where the crescent lock l is attached is locally broken, the crescent lever 3 cannot be operated and the door etc. cannot be opened, preventing illegal entry. It can be useful for

Further, since the lock member 5 is made slidable in the longitudinal direction within the lock body 2, the lock body 2 can be made small and compact, and the lock member operating handle 5A can be protruded laterally in the width direction. It is easy to operate.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a central longitudinal side view, Fig. 2 is a front view, Fig. 3 is a back view, Fig. 4 is a left side view, and Fig. 5 is a right side view. , FIG. 6 is a bottom view, FIG. 7 is a top view, FIG. 8 is a sectional view taken along the line A-A in FIG. 1, FIG. 9 is a sectional view taken along the line B-B in FIG. 8, and FIG. Figure 1) is a partially omitted back view with the back cover, locking member, and retaining ring removed and the dial shaft is broken, Figure 12 is the crescent. A back view of the lever, FIG. 13 is a front view of the coupling, FIG. 14 is a sectional view taken along the line CC in FIG. 13, FIG. 15 is a back view of the coupling, and FIG. 16 is a front view of the locking member. 1st
Figure 7 is a left side view of Figure 16, Figures 18 to 20 are front views of the locking ring, Figure 21 is a front view of the spacer, and Figure 2
Figure 2 is a front view of the lock click spring, Figure 23 is the 22nd
24 is a front view of the lock body mounting position adjustment fitting, FIG. 25 is an enlarged cross-sectional view taken along the line D-D in FIG.
Figure 6 is a back view of Figure 25. 1... Crescent lock, 2... Lock body, 3... Crescent lever, 3C.
... Engagement part of the crescent lever, 5... Lock member,
6...Dial, 7...Dial axis, 8-10...
- Locking ring, 19... Locking fitting, 20... Fittings.
8 Figure 20B Figure 17 Figure 16 Figure 18 Figure 20

Claims (2)

[Claims] (1) The engaging part (3C) of the crescent lever (3) rotatably attached to the lock body (2) attached to the fitting (20) etc. is connected to the locking metal fitting attached to the fitting (20) etc. (
In the crescent lock (1) which can be freely engaged and detached from the crescent lever (3), a dial shaft (
7), and the locking member (5) of the crescent lever (3) is restrained by the locking rings (8) to (10) installed in the lock body (2) of the dial shaft (7). None, dial (6) provided on the dial shaft (7)
The crescent is characterized in that by matching the key to a predetermined unlocking number, the restraints by the locking rings (8) to (10) are released, and the locking member (5) comes off and becomes unlockable. Tablet. (2) The crescent lock according to claim 1, wherein the locking member (5) is provided within the lock body (2) so as to be slidable in the longitudinal direction thereof.