JP2003003702A - Thumb turn device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a device for setting or releasing a thumb turn mechanism for setting or releasing a lock installed in a door or the like, from inside. SOLUTION: The thumb turn device is formed of a housing 6, a thumb turn member 8, a cylinder 13, and a tail piece 9. The housing 6 is fixed to a door body. The thumb turn member 8 is rotatably fitted into the housing 6 and has a cylindrical hole formed therein, along an axial line 5 of the cylindrical hole. The cylinder 13 is fitted into the cylindrical hole of the thumb turn member 8, and has a key hole 14 formed therein along the axial line 5. The cylinder 13 is rotatable with respect to the thumb turn member 8 only when a predetermined key is inserted into the key hole 14. The tail piece 9 is rotatably fitted into the housing 6 in a manner being coaxial with the thumb turn member 8, and is rotatable together with the thumb turn member 8 only when the cylinder 13 is at a predetermined rotational angular location with respect to the thumb turn member 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing or releasing a thumb turn mechanism for locking / unlocking a lock attached to a door or the like from the inside.

[0002]

2. Description of the Related Art A thumb-turn mechanism for locking or unlocking a lock attached to a door or the like indoors (or indoors, hereinafter the same) without using a key is widely used. However,
If a part of the door or the like (for example, a glass part) is destroyed, an outdoor person could put his hand through the destroyed part, unlock it by the thumb turn mechanism, and enter the room indoors. Therefore, there has been a conventional mechanism for separating the thumb turn and the tail piece by using a key on the indoor side so that the thumb turn cannot be unlocked.

FIG. 11 is a longitudinal side view (cross section taken along line XI-XI in FIG. 12) showing a state in which a thumb turn clutch is engaged in an example of such a conventional separable thumb turn device.
2 is a vertical plan view taken along the line XII-XII in FIG. In these figures, the housing 01 has a first axially penetrating first housing.
The circular hole 02 and the second circular hole 03 are formed.

An inner cylinder 04 is rotatably inserted in the first circular hole 02. 05 is a retaining pin. A key hole 06 is provided in the inner cylinder 04 along the axis. Inner cylinder 04
A mortar-shaped recess 04a is provided on the outer surface of the.

Further, as shown in FIG. 12, the inner cylinder 04 has a plurality of (4 in the illustrated example) inner pins penetrating from the outer surface to the key hole 06 along a plane extending in the radial direction from the axis. A guide hole 07 is provided. Further, the housing 01 is provided with two rows of outer pin guide holes 08 at axial positions corresponding to the inner pin guide holes 07 along a plane extending in both directions with the axis interposed therebetween.

An inner pin 09 is slidably inserted in the inner pin guide hole 07, and an outer pin 010 is slidably inserted in the outer pin guide hole 08. The inner pin 09 and the outer pin 010 are urged toward the axis by the pin spring 011 and the inner pin 09 is key hole 0.
6 protruding into the inside, and the outer pin 010 is the inner cylinder 04 and housing 01.
It is located across both sides of the rotation boundary surface with. The contact surface between the inner pin 09 and the outer pin 010 coincides with the rotation boundary surface between the inner cylinder 04 and the housing 01 only when a predetermined key is inserted into the key hole 06. Note that 08a is the outer pin guide hole 08 after the outer pin guide hole 08 is bored in the housing 01.
It is a stopper that closed one end of the.

One end (the right end in the figure) of the first circular hole 02 and the second circular hole 03 is closed by a tail cover 012. A tail piece 013 and a thumb turn shaft 014 are rotatably inserted into both ends of the second circular hole 03. 015 is a retaining pin. A clutch member 016 is fitted between the tail piece 013 and the thumb turn shaft 014 so as to be rotatable and slidable in the axial direction.

The clutch member 016 has a small-diameter drum shape in the middle, and a protrusion 016a provided along the diameter of one end (right end in the figure) has a groove 013a provided in the tailpiece 013. It can be fitted to. A protrusion 016b having a square cross section is provided at the other end (left end in the figure) of the clutch member 016. Also, on the thumb turn shaft 014,
A through hole 014a having a square cross section is bored along the axis, and the projection 016b of the clutch member 016 is slidably fitted to one end of the through hole 014a.

A thumb turn lever 018 is attached to the other end of the thumb turn shaft 014 with a spring receiving member 017 interposed therebetween, and is integrally fixed by a pin 019. And through hole 014a
A thumb turn spring 020 is arranged between the inner spring receiving member 017 and the clutch member 016 to urge the clutch member 016 to the right in the drawing.

Further, the first circular hole 02 and the second circular hole 03 are communicated with each other by a communication hole 021 provided at an axial position corresponding to the mortar-shaped recess 04a. And clutch ball 022 in the space formed by
Is housed.

In the state shown in FIGS. 11 and 12,
The protrusion 016a of the clutch member 016 is the groove 013 of the tailpiece 013.
Since the thumb turn lever 018 is turned, the thumb turn shaft 014, which is integrated with the thumb turn lever 018, rotates, and the tail piece 013 also rotates via the clutch member 016. Then, a dead bolt (not shown) reciprocates to lock or unlock.

In this state, since the outer pin 010 is located on both sides of the rotation boundary surface between the housing 01 and the inner cylinder 04, the inner cylinder 04 is rotated in the first circular hole 02. It is not possible. (See Figure 12).

Next, when a predetermined key is inserted into the key hole 06,
The inner pin 09 and the outer pin 010 are pushed into the inner pin guide hole 07 and the outer pin guide hole 08 against the force of the pin spring 011 and the inner pin 09
The contact surface between the outer pin 010 and the outer pin 010 coincides with the rotation boundary surface between the inner cylinder 04 and the housing 01, and the inner cylinder 04 becomes rotatable. Then turn the key 180 °, as shown in the lower half of Fig. 13,
The clutch ball 022 is pushed out from the recess 04a of the inner cylinder 04,
It enters into the second circular hole 03 through the communication hole 021. Then, the clutch member 016 is pushed into the intermediate small-diameter portion, and the clutch member 016 is moved leftward in the drawing against the force of the thumb turn spring 020. Therefore, the fitting between the projection 016a of the clutch member 016 and the groove 013a of the tail piece 013 is released.

When the key is pulled out from the key hole 06, as shown in FIG.
4, the inner pin 09 and the outer pin 010 move by being urged by the pin spring 011 so that the inner pin 09 projects into the key hole 06 and the outer pin 010 moves the inner cylinder 04 and the housing 01.
It will be located on both sides of the rotation boundary surface of and. In this way, the inner cylinder 04 is fixed in the first circular hole 02, and
The disengaged state between the tail piece 013 and the clutch member 016 is also fixed.

In this state, even when the thumb turn lever 018 is turned, the thumb turn shaft 014 and the clutch member 016 rotate, but the tail piece 013 does not rotate, so that locking / unlocking cannot be performed. Then insert a rod-shaped object into the key hole 06 and insert
Even if you try to turn 04, the inner cylinder 04 does not rotate because the outer pin 010 is located on the rotation boundary surface. That is, the thumb turn clutch is fixed in the disengaged state.

When a predetermined key is inserted into the key hole 06 again, the inner pin 09 and the outer pin 010 are pushed into the inner pin guide hole 07 and the outer pin guide hole 08 against the force of the pin spring 011. In rare cases, the contact surface between the inner pin 09 and the outer pin 010 coincides with the rotating boundary surface between the inner cylinder 04 and the housing 01, and the inner cylinder 04 becomes rotatable.

Then, when the key is turned 180 °, as shown in FIG. 11, the mortar-shaped recess 04a comes down to form a space for accommodating the clutch ball 022. Then, the clutch member 0 urged by the thumb turn spring 020
While pushing up the clutch ball 022 to the above space, 16 moves to the right in the drawing, and the protrusion 016a of the clutch member 016 and the groove 013a of the tail piece 013 are fitted together.

When the key is pulled out here, as shown in FIG. 12, the inner pin 09 and the outer pin 010 are urged by the pin spring 011 to move, and the inner pin 09 projects into the key hole 06. At the same time, the outer pin 010 is located across both sides of the rotation boundary surface between the inner cylinder 04 and the housing 01.

Thus, the inner cylinder 04 is fixed in the first circular hole 02, and the fitting state of the tail piece 013 and the clutch member 016 is also fixed. That is, thumb turn lever 01
Turning 8 turns keyhole 14, clutch member 016, tailpiece 01
3 rotates, and the dead bolt (not shown) reciprocates to be locked / unlocked, and the state returns to the thumb turn clutch fitted state shown in FIGS. 11 and 12.

[0020]

The conventional separable thumb-turn device has a complicated structure and a large number of parts, resulting in a large number of assembling steps and a high cost.

[0021]

In order to solve the above-mentioned conventional problems, the invention according to claim 1 is such that a housing fixed to a door body and a housing rotatably fitted to the housing are attached to an axis line. A thumb turn member provided with a cylindrical hole along the side, and fitted into the cylindrical hole of the thumb turn member,
A key hole is provided along the axis, and the cylinder is rotatable with respect to the thumb turn member only when a predetermined key is inserted into the key hole, and the housing is rotatably coaxial with the thumb turn member. A thumb turn device, which is fitted and has a tail piece that rotates integrally with the thumb turn member only when the cylinder is at a predetermined rotation angle position with respect to the thumb turn member.

The invention according to claim 1 is configured as described above, and since the tail piece, the thumb-turn member and the cylinder are arranged on the same axis, the structure is simple.

Next, the invention according to claim 2 is a housing fixed to a door body, a thumb-turn member which is rotatably fitted in the housing and provided with a cylindrical hole along an axis, and the thumb-turn member. A cylinder fitted in a cylindrical hole of a member and provided with a key hole along the axis, and a housing rotatably fitted in the housing coaxially with the thumb-turn member, and on the thumb-turn member in a plane orthogonal to the axis. A plurality of inner pin guide holes penetrating from the outer surface of the cylinder to the key holes along a plane extending radially from the axis of the cylinder, and the axis of the thumb turn member. 2 extending radially from
Two rows of outer pin guide holes are formed along the plane at axial positions corresponding to the inner pin guide holes, and inner pins are slidably inserted into the inner pin guide holes so that the inner pin guide holes The outer pin is slidably inserted into the outer pin guide hole and is biased toward the axis by a spring, and only when the predetermined key is inserted into the key hole, One row of the outer pins moves outward against the force of the spring, and the contact surfaces of the two pins coincide with the rotating boundary surface between the thumb turn member and the cylinder. A recess is provided on the end surface in contact with the thumb turn member, and the thumb turn member is provided with a clutch pin guide hole axially penetrating through a radial position corresponding to the recess, and the tail piece, With the above thumb turn member A clutch outer pin guide hole is bored in the axial direction at the radial position of the end face to be engaged, and a clutch inner pin having a length equal to the length of the clutch inner pin guide hole is slidable in the inner clutch pin guide hole. And a clutch outer pin is slidably inserted into the clutch outer pin guide hole and is biased toward the cylinder by a spring.

Since the invention according to claim 2 is configured as described above, not only the tail piece, the thumb turn member, and the cylinder are arranged on the same axis, but also the tail piece, the thumb turn member, and the cylinder enter and leave the recess provided on the end surface of the cylinder. Since the clutch mechanism between the thumb turn member and the tail piece is connected or disconnected by the clutch inner pin and the clutch outer pin that moves in contact with the clutch pin, the structure is simple and the number of parts is small. Cost is reduced.

[0025]

1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is an exploded view of the same main parts, and FIG. 3 is a longitudinal sectional view of the same main parts.

The lock shown in FIG. 1 is mounted as a second auxiliary lock from the inside of an existing door, and is composed of a casing 1, a lock portion 2 and a thumb turn portion 3. That is, the lock portion 2 has a cylindrical shape whose length is equal to the thickness of the door, and a hole corresponding to the diameter thereof is formed in the door, and the lock portion 2 is inserted from the indoor side into the hole, so that the casing 1 is inserted into the door. Fix it by screwing it to the inner wall surface. Although not shown in detail, the lock portion 2 is a normal cylinder lock and can be locked / unlocked from the outside by a predetermined key. 4 is a dead bolt.

Next, referring to FIGS. 2 and 3, a housing 6 having a cylindrical inner surface is attached to the outer surface of the casing 1 with flat head screws 7. That is, the housing 6 is indirectly fixed to the door body. This housing 6
The thumb-turn member 8 and the tail piece 9 are rotatably fitted in. The thumb turn member 8 and the tail piece 9 are in contact with each other in a plane orthogonal to the axis 5. 10 is a collar and 11 is a thumb turn retaining pin, which is attached by a hexagon socket set screw 12.

The thumb-turn member 8 is also provided with a cylindrical hole, and the cylinder 13 is fitted in the hole.
A key hole 14 is provided along the axis 5 of the cylinder 13. Reference numeral 15 is a half-moon key that prevents axial movement of the cylinder 13.

A plurality of (2 in the illustrated example) inner pin guide holes 16 penetrating the key hole 14 from the outer surface of the cylinder 13 are provided along a plane extending in the radial direction from the axis 5 of the cylinder 13. Further, the thumb turn member 8 has two planes extending in the radial direction from the axis 5 (in the illustrated example, two planes opened by 180 °, so that it is substantially one plane that sandwiches the axis 5 and extends to both sides. It does not have to be 180 °.)
Two rows of outer pin guide holes 17 are formed at positions axially corresponding to the inner pin guide holes 16.

An inner pin 18 is slidably inserted into the inner pin guide hole 16 and projects into the key hole 14. An outer pin 19 is slidably inserted in the outer pin guide hole 17 and is urged by a spring 20 in the direction of the axis 5. 21 is a hexagon socket set screw. Then, only when a predetermined key is inserted into the key hole 14, the inner pin 18 and a part of the outer pin 19 move outward against the force of the spring 20, and the contact between the pins 18 and 19 is made. The surface is adapted to coincide with the rotating boundary surface between the thumb turn member 8 and the cylinder 13.

A recess 22 is provided on the end face of the cylinder 13 which is in contact with the thumb turn member 8. Further, the thumb-turn member 8 is provided with an in-clutch pin guide hole 23 penetrating in the direction of the axis 5 at a radial position corresponding to the recess 22. Further, the tail piece 9 is provided with a clutch outer pin guide hole 24 in the direction of the axis 5 at the radial position of the end surface in contact with the thumb turn member 8.

The clutch pin 25 is slidably inserted into the clutch pin guide hole 23. The length of the clutch inner pin 25 is equal to the length of the clutch inner pin guide hole 23, that is, the thickness of the head portion of the thumb turn member 8. A clutch outer pin 26 is slidably inserted in the clutch outer pin guide hole 24 and is urged toward the cylinder 13 (left side in the drawing) by a pin spring 27.

A dead bolt (not shown) is connected to the end 9a of the tail piece 9 so that the tail piece 9 is
When is rotated, the dead bolt reciprocates and is locked or unlocked.

In the state shown in FIG. 3, the clutch outer pin
Pin in clutch urged by pin spring 27 via 26
Since 25 is fitted in the recess 22 of the cylinder 13 and the clutch outer pin 26 straddles both sides of the boundary surface between the thumb turn member 8 and the tail piece 9, when the thumb turn member 8 is rotated, the tail piece 9 also rotates, Locks can be locked and unlocked. That is, the thumb turn clutch is engaged. At this time, the cylinder 13 also rotates integrally with the thumb turn member 8.

Next, a predetermined key 28 is inserted into the key hole 14 of the cylinder 13.
4 is inserted, the inner pin 18 and the outer pin 19 are pushed up against the force of the spring 20, and the contact surface between the inner pin 18 and the outer pin 19 makes contact between the thumb turn member 8 and the cylinder 13. Cylinder 13 because it matches the rotating boundary surface (shear line)
Becomes rotatable with respect to the thumb turn member 8.

Then, the cylinder 13 is moved to the 18 position by the key 28.
When rotated by 0 °, as shown in FIG. 5, the clutch inner pin 25 resists the force of the pin spring 27 and is pushed up to the end face of the cylinder 13 along the inclined surface of the recess 22 of the cylinder 13. Then, since the length of the clutch inner pin 25 is equal to the thickness of the head portion of the thumb turn member 8, the clutch outer pin 26 extending over both sides of the contact surface (shear line) between the thumb turn member 8 and the tail piece 9. Are extruded into the tailpiece 9, and the contact surfaces of the clutch inner pin 25 and the clutch outer pin 26 coincide with the shear line. Therefore, the clutch connection between the thumb turn member 8 and the tail piece 9 is broken.

When the key 28 is pulled out from the state shown in FIG. 5, the lower inner pin 18 and the outer pin 19 are urged by the spring 20 to move toward the axis 5 as shown in FIG. The inner pin 18 projects into the key hole 14, and the outer pin 19 is positioned so as to straddle the rotation boundary surface between the thumb turn member 8 and the cylinder 13, so that the cylinder 13 is fixed to the thumb turn member 8.
Therefore, the in-clutch pin 25 does not enter the recess 22 of the thumb-turn member 8, and the state in which the clutch connection between the thumb-turn member 8 and the tail piece 9 is disengaged is fixed, so that the thumb-turn member 8 as shown in FIG. The tailpiece 9 does not rotate even when the 8 is turned. Thus, even if you put your hand through the broken part of the door, you cannot unlock it.

When the key 28 is inserted again into the key hole 14 in the state shown in FIG. 7, as shown in FIG. 8, the inner pin 18 and the outer pin 19 are inserted.
Is pushed up against the force of the spring 20 and the inner pin 18 and outer pin
Since the contact surface of 19 coincides with the rotating boundary surface between the thumb turn member 8 and the cylinder 13, the cylinder 13 can rotate with respect to the thumb turn member 8.

Then, the key 28 is turned to move the cylinder 13 to 180
When rotated, the recess 22 of the cylinder 13 comes to the position of the clutch inner pin guide hole 23 of the thumb-turn member 8, as shown in FIG. 9, so that the clutch inner pin 25 becomes movable.

When the key 28 is pulled out, the lower inner pin 18 and the outer pin 19 are urged by the spring 20 to move toward the axis 5, as shown in FIG. Then, the inner pin 18 projects into the key hole 14, and the outer pin 19 comes to be located over the rotation boundary surface between the thumb turn member 8 and the cylinder 13.
The cylinder 13 is fixed to the thumb turn member 8. Therefore, the recess 22 of the cylinder 13 is fixed at the position of the clutch inner pin guide hole 23 of the thumb turn member 8.

Then, when the thumb turn member 8 is turned to a position where the clutch inner pin 25 and the clutch outer pin 26 meet, the clutch outer pin 26 is urged by the pin spring 27 to move the clutch inner pin 25 into the recess 22 of the cylinder 13. Push in. Then, the clutch outer pin 26 itself is located across both sides of the contact surface between the thumb turn member 8 and the tail piece 9, and returns to the state shown in FIG. That is, the thumb-turn device is in a clutch-engaged state, and when the thumb-turn member 8 is turned, the tail piece 9 is also turned and locked / unlocked.

In the thumb turn device of this embodiment, the tail piece 9, the thumb turn member 8 and the cylinder 13 have the same axis 5.
Is disposed on the thumb turn member 8 by means of the clutch outer pin 26 that is pressed against the clutch inner pin 25 that moves in and out of the recess 22 provided in the end surface of the cylinder 13 to move.
Since the clutch mechanism between the tail piece 9 and the tail piece 9 is connected / disengaged, the structure is simple and the number of parts is small. Therefore, the number of assembling steps is small and the cost is low.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded view of the same main part.

FIG. 3 is likewise a longitudinal cross-sectional view of an essential part, showing a state in which a thumb turn clutch is engaged.

FIG. 4 is a view showing a state in which a predetermined key is inserted in the state of FIG.

5 is a diagram showing a state in which a key is turned to rotate a cylinder from the state of FIG. 4;

FIG. 6 is a diagram showing a state in which a key is pulled out from the state of FIG.

FIG. 7 is a view showing a state in which a thumb turn member is turned from the state shown in FIG.

8 is a diagram showing a state in which a key is inserted again in the state of FIG. 7.

9 is a diagram showing a state in which a key is turned to rotate a cylinder from the state of FIG. 8;

10 is a diagram showing a state in which a key is pulled out from the state shown in FIG. 9;

11 is an example of a conventional separable thumb-turn device, which is a vertical cross-sectional side view (section XI-XI in FIG. 12) showing a state in which a thumb-turn clutch is coupled.

12 is a vertical cross-sectional plan view taken along the line XII-XII in FIG.

FIG. 13 is a vertical cross-sectional side view showing a state in which the thumb turn clutch is disengaged in the conventional thumb turn device (FIG. 1).
4 is a cross section taken along line XIII-XIII).

14 is a vertical plan view taken along the line XIV-XIV in FIG.

[Explanation of symbols]

1 ... Casing, 2 ... Lock part, 3 ... Thumb turn part, 4 ... Dead bolt, 5 ... Axis line, 6 ... Housing, 7 ... Flat head screw,
8 ... Thumb turn member, 9 ... Tail piece, 10 ... Color,
11… Thumb turn retaining pin, 12… Set screw, 13… Cylinder, 14… Key hole, 15… Half moon key, 16… Inner pin guide hole, 17
... outer pin guide hole, 18 ... inner pin, 19 ... outer pin, 20 ... spring,
21 ... Set screw, 22 ... Dent, 23 ... Clutch pin guide hole,
24 ... clutch outer pin guide hole, 25 ... clutch inner pin, 26 ...
Outer clutch pin, 27 ... pin spring, 28 ... key.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideko Yamamoto             2-5 Shinbashi, Minato-ku, Tokyo Joint-stock company             Inside the moat store

Claims (2)

[Claims] 1. A housing fixed to a door, a thumb turn member rotatably fitted in the housing and provided with a cylindrical hole along an axis, and a thumb hole member having a cylindrical hole. A cylinder provided with a key hole along the axis and rotatable with respect to the thumb turn member only when a predetermined key is inserted into the key hole; and a cylinder coaxial with the thumb turn member in the housing. A thumb turn device, which is rotatably fitted and has a tail piece that rotates integrally with the thumb turn member only when the cylinder is at a predetermined rotation angle position with respect to the thumb turn member. 2. A housing fixed to a door body, a thumb turn member rotatably fitted in the housing and provided with a cylindrical hole along an axis, and a thumb hole member having a cylindrical hole. A cylinder provided with a key hole along an axis, and a tail piece rotatably fitted in the housing coaxially with the thumb turn member and contacting the thumb turn member in a plane orthogonal to the axis. A plurality of inner pin guide holes penetrating the key hole from the outer surface of the cylinder are formed along a plane extending radially from the axis of the cylinder, and two inner planes extending radially from the axis of the thumb turn member are formed. Along the axial direction, two rows of outer pin guide holes are formed at positions corresponding to the inner pin guide holes, and inner pins are slidably inserted into the inner pin guide holes so as to be inserted into the key holes. The outer pin is slidably inserted into the outer pin guide hole and is urged toward the axis by a spring, and only when the predetermined key is inserted into the key hole, the inner pin and the outer pin are inserted. One row of the pins moves outward against the force of the spring, and the contact surfaces of the two pins coincide with the rotating boundary surface between the thumb turn member and the cylinder. A recess is provided on an end surface contacting the thumb turn member, and a pin guide hole in the clutch penetrating axially through a radial position corresponding to the recess is formed in the thumb turn member. An outer clutch pin guide hole is bored in the axial direction at the radial position of the end face in contact with the thumb turn member, and a clutch having a length equal to the length of the inner clutch pin guide hole is formed in the inner clutch pin guide hole. An inner pin is slidably inserted, and a clutch outer pin is slidably inserted into the clutch outer pin guide hole, and is biased toward the cylinder by a spring. apparatus.