JP2507134Y2 - Heart lock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heart lock having a caution function of restricting an opening angle of a door as necessary to prevent an intruder from invading such as pushing and selling, and also enabling locking. .

[0002]

2. Description of the Related Art Conventionally, as a precautionary tablet having this type of precautionary function and this locking function, (a) Japanese Utility Model Laid-Open No. 60-8026 filed by the present applicant
7), (b) those described in Japanese Utility Model Laid-Open No. 63-174278, and (c) those described in Japanese Utility Model Laid-Open No. 60-68158.

(A) Conventional examples (a), (b), (c)
In any of the above, a receiving member having a receiving hole for the present locking, a regulating member having an engaging hole for a caution tablet, a locking rod fitted in the lock case, and one hub, The hub can be directly actuated by rotating the operating member such as thumb turn or cylinder to project the hub in two steps. In addition, it is provided in the lock case to set the unlocked position, the locking position and the locked position of the locking rod. Each of them has a click device for positioning, and at the time of minimum protrusion of the locking rod, the locking portion thereof is engaged with the locking hole of the regulating member to enable opening of the door at a certain angle, and the maximum locking rod It is common in that it is engaged with a receiving hole for main locking of the receiving member during the projection so as to be fully locked.

In (b), (a), and (b), one engaging recess is formed in the rear part of the locking rod handle, and one hub is rotated by an operating member such as a thumb turn. This is a structure in which one arm is directly engaged to advance and retract the lock rod.

In the case of (c) (c), the first engaging recess and the second engaging recess are formed on the lock rod, while 18 is formed on one hub.
First and second rotary pins are provided at 0 ° opposite positions, and one of these rotary pins is engaged with the first and second engaging recesses by rotating an operating member such as a thumb turn. The lock rod is directly actuated to emerge.

(D) Positioning means (clicking device) for positioning the unlocking position, the locking position and the locking position of the locking rod
Regarding (a), a large number of components such as a ball, a spring, an engaging groove for holding the ball, a horizontal bar, and a locking piece for gradually supporting the horizontal bar are required. The positioning means (b) is formed by forming three recesses for engaging and disengaging one arm of the hub on the swing plate that is vertically moved by the spring. The positioning means (c) requires a tumbler that is vertically moved by a spring, first and second guide pins that are horizontally inserted into the elongated holes of the tumbler, and a spring.

[0007]

However, in any of the above-mentioned conventional examples (a), (b) and (c), the above (a),
As described in (b) and (c), since one hub is rotated by the operating member and the locking rod is directly actuated by this hub, the amount of protrusion of the locking rod is small, which makes the security uneasy. is there.

The type (b) adopts the structure as described in the above (b), and the total rotation angle of the hub is the same as that of a normal lock.
Corresponding to the two-step protrusion of the lock rod in order to make it as small as
The rotation of the hub is set to 45 ° in the first stage and 45 ° in the second stage. At such a rotation angle, the amount of protrusion of the locking rod is small, so that the locked state becomes unstable. In order to avoid this, in (b), as described in (d), it is necessary to separately provide a positioning means such as an oscillating plate, which has a drawback that the configuration becomes complicated.

In (c), as described in (c) above, the first and second rotating pins are provided at 180 ° opposite positions, the unlocking position of the locking rod to the viscous lock position, and the viscous lock position to the main lock position. In any case, in order to change the locking position or the position in the opposite direction, it is necessary to rotate the operation members such as thumb turns by 180 °, that is, 360 ° to fully lock the operation members. However, there is a big disadvantage that it is not practical.

(A) Positioning means (click device)
Is the above-mentioned ball, spring,
There are problems that a large number of parts are required because a large number of parts such as a horizontal bar and a locking piece are required, and the assembling work of each of these parts is troublesome. (B),
In any of the positioning means of (c), the action point of the click spring is located on the protrusion of the hub or the rotating pin, and their shape is an acute angle with a small radius of curvature, so the effect of the click spring is not smooth, that is, There is a problem that the feeling of operation is not smooth.

This invention is intended to solve the above problems.

[0012]

In order to solve the above problems, the present invention provides a receiving member having a receiving hole for the present locking,
A restricting member having an engaging hole for a padlock, a first engaging concave portion and a second engaging concave portion that are fitted into and retractable from the lock case, and have a rotation of an operating member such as a thumb turn or a cylinder. A lock rod that is projected in two steps by movement, and a click device that is provided in the lock case and positions the unlocking position, the caution lock position, and the main locking position of the lock rod, respectively. The locking part engages with the locking hole of the regulating member to enable the door to open at a certain angle, and when the locking rod is maximally projected, the locking member is engaged with the locking hole of the locking member. In the lockable lock, in the lock case, there are provided a first arm engaged with the first engagement recess of the lock rod and a second arm engaged with the second engagement recess. A first hub having a small gear, a large gear meshing with the small gear of the first hub, and a large radius of curvature. A second hub 6 having first, second and third abutting surfaces each having a surface and rotatably pivoting a second hub 6 which is rotated by the operation member, and the click device has a tip thereof. Is urged by a spring so as to abut and engage with any of the first contact surface, the second contact surface and the third contact surface of the second hub.

A roller is provided at the tip of the click device,
It is preferable that the roller is configured to abut and engage with any of the first, second and third abutment surfaces of the second hub.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a lock case embedded from the front side to the rear side of the front side of the door a. Inside the lock case 1, a thumb turn (not shown) provided on the indoor side or a cylinder (not shown) provided on the outdoor side is provided. ), The second hub 6 is rotated through the operating rod 14, and a locking rod that is projected in two steps of maximum and minimum is fitted.
A locking portion 3a is formed at the tip of the lock rod 3.

As a concrete structure for projecting the lock rod 3 in two steps, a U-shaped lock rod handle 4 provided at the rear portion of the lock rod 3 and an engaging recess of the lock rod handle 4 are detachably engaged. First hub 5 to fit
And a second hub 6 that causes the lock rod 3 to project in two steps and slide backward with the first hub 5 interlocked with each other by rotating an operation member such as a thumb turn or a cylinder.

That is, one side wall 4a of the lock rod handle 4
A first engaging recess 7 is formed on the other side wall, and a second engaging recess 8 is formed on the other side wall 4b at a distance. The first hub 5 is rotatably supported by a pivot 9 in the lock case 1, and is engaged with the first engagement recess 7 of the lock rod handle 4. It has the 2nd arm 11 engaged with the 2nd engagement recessed part 8 of the locking rod handle 4, and the small gear 5a formed in a part of outer periphery.

The second hub 6 is pivotally supported between both side walls of the lock case 1 via a mounting plate 12, and a large gear 11a meshing with a small gear 5a of the first hub 5 is provided on a part of the outer periphery thereof. A first contact surface 18, a second contact surface 19 and a third contact surface 20 each having a surface with a large radius of curvature are provided on the other portion of the outer periphery avoiding the large gear 11a, and a hub hole 11b is provided on the pivot portion. Each of them is formed by inserting an operating rod 14 of an operating member such as a thumb turn or a cylinder into the hub hole 11b, and rotating the operating rod 14 by a predetermined angle to connect the large gear 11a with the small gear 5a of the first hub 5. The first hub 5 is interlocked with each other by meshing so that the first hub 5 can be selectively used in the unlocked state, the caution state, and the locked state.

Further, in the lock case 1, as shown by the solid line in FIG. 1, the unlocked position where the lock rod 3 is retracted in the lock case 1, and as shown in FIG. Stop 3
a is engaged with an engagement hole 51 of the regulating member 45 described later to regulate the opening amount of the door, and the locking rod 3 is projected at the maximum stage as shown in FIG. A click device 15 is provided for positioning the locking position for closing the door by engaging with the receiving hole 42 of the member 40. The click device 15 has one end of an arm 25 pivotally supported in the lock case 1 by a pivot 17 and a spring 16 to move the one end of the arm 25.
Of the roller 2 at its tip 25a.
5b, the roller 25b abuts and engages with the first abutment surface 18 of the second hub 6 in the unlocked state of FIG. 1, and the second abutment surface of the second hub 6 in the padlock state of FIG. 19 and abuttingly engages with the third abutting surface 20 in the unlocked state shown in FIG. 4, so that each state position is stably held. 21 is the third contact surface 20 of the second hub when unlocked
Is a stopper that prevents the rotation of the counterclockwise.

Reference numeral 22 is a side wall 4 of the unlocking rod handle 4 of the unlocking rod 3.
It is a guide column that is inserted into the sliding holes 4c formed in a and 4b and guides the back and forth movement of the lock rod 3. The guide pillar 22 also serves as a screw pillar together with the pivot 17 and the stopper 21 described above, and by screwing a screw into these three members 17, 21 and 22, a case body 1a of the lock case 1 and a lid (not shown) are formed. Is fixed.

Reference numeral 40 denotes a receiving member embedded from the front to the rear of the front side of the door frame B. The receiving recess 40 has a storage recess 41 formed in the front thereof for storing a restricting member 45 having an arbitrary structure. A part of the storage recess 41 is formed with a receiving hole 42 into which the locking portion 3a of the lock rod 3 is fitted when the lock rod 3 is maximally projected when the door is closed. 43 is a back cover and 44 is a mounting screw.

The upper end of the restricting member 45 is pivotally attached to the upper end of the accommodating recess 41 of the receiving member 40 by a pivot 46.
That is, the restricting member 45 is, as described in Japanese Utility Model Laid-Open No. 60-80267 related to the application of the present applicant, a first member 45a pivotally attached to the receiving member 40 by the pivot 46, and the first member 45a. The second member 45b which is slidable with the side walls 47 formed on the guide as guides.
An inward bent portion 49 is formed on the back surface of the center of the upper part of b, and the other end of the tension spring 50 is attached to this bent portion 49.
One end of 0 is attached to the pivot 46, and the second member 45b is always pulled upward.
At the lower end of b, there is formed an engagement hole 51 for the locking pad, which is slightly larger than the locking portion 3a of the lock rod 3 at a position where it is inserted into the receiving hole 42 of the receiving member 40 when the door is closed.

Therefore, when the locking rod 3 is projected to the minimum (indicated by the one-dot chain line in FIG. 1 and in the state shown in FIG. 3), the engaging portion 3a is engaged with the engaging hole 51 of the regulating member 45, that is, the second member 45b. When the lock rod 3 is maximally projected (indicated by the chain double-dashed line in FIG. 1 and in the state shown in FIG. 4), the locking portion 3a is engaged with the receiving hole of the receiving member 40. It is configured to be locked together. 52 is a cover of the first member 45a.

[0023]

[Operation Example of Embodiment] The operation of this embodiment will be described below. In the unlocked state of FIG. 1 (solid line state), with the door A completely closed, the second hub 6 is locked in the locking direction (clockwise direction) through the operation member such as the thumb turn or the cylinder as shown in FIG. When it is rotated one step, the first hub 5 meshed with it rotates counterclockwise, and the first arm 10 of the first hub 5 moves the front portion 7a of the first engaging recess 7 of the lock rod 3. The locking portion 3a of the lock rod 3 is projected one step (see the one-dot chain line in FIG. 1), and the locking portion 3a is engaged with the engaging hole 51 of the regulating member 45.
Get involved in.

Therefore, when the door B is opened, the shaft portion of the locking portion 3a pushes the edge of the engaging hole 51, and at the same time, the second member 45b of the regulating member 45 resists the elastic force of the tension spring 50. Then first
While moving downward with the side wall 47 of the member 45a as a guide and rotating around the pivot 46 as a fulcrum, the locking projection 4 of the second member 45b is moved.
When 8 comes to the stopper 53 provided on the lower portion of the side wall 47 of the first member 25a, the door is in a half-open state in which it cannot be opened any more. In this case, the locking portion 3a of the lock rod 3 is always moved in parallel with the door b, and always maintains a fixed posture, so that the engagement hole 51
Since the direction of is gradually inclined by the inclination of the restricting member 45, the engaging portion 3a is not accidentally removed from the engaging hole 51, and therefore, the locking portion 3a can be unlocked illegally from the outside of the door. Not (see second). In other words, achieve the precautionary function.
In this cautionary lock state, the tip of the click device 15 is brought into abutment engagement with the second abutment surface 19 to position the cautionary note position (see FIG. 3).

In the locking state or the unlocked state in which the locking rod is completely retracted into the lock case, the door B is completely closed, and the second hub 6 is further locked (clockwise direction) via the operation member. When the first hub 5 is rotated to the second arm 1 in the same manner as described above, the first hub 5 further rotates counterclockwise.
1 engages with the front portion 8a of the second engaging recessed portion 8 of the lock lever handle 4, and the locking portion 3a of the lock rod 3 is projected to the maximum extent (see the two-dot chain line in FIG. 1, see FIG. 4), The locking portion 3a is fitted into the receiving hole 42 of the receiving member 40 through the engaging hole 51 of the regulating member 45, and the door cannot be opened, which is a so-called locked state (two-dot chain line in FIG. 1, FIG. 4).
reference). In this fully locked state, the tip of the click device 15 is brought into abutting engagement with the third abutment surface 20, and the fully locked position is positioned (see FIG. 4).

On the contrary, when the second hub 6 is rotated in the unlocking direction (counterclockwise direction) from the fully locked state of FIG. 4 through the operation of the operating member such as thumb turn or cylinder, the first hub 5 is rotated.
Rotates clockwise and the second arm 11 of the first hub 5 engages with the rear portion 8b of the second engaging recess 8 as shown in FIG. . In this way, the second hub 6
Even when is rotated in the opposite direction, the click device 15 operates in the same manner as described above to perform the respective positioning.

From the precautions state of FIG. 3, the second hub 6 is
When is further rotated in the unlocking direction (counterclockwise direction), the first hub 5 further rotates clockwise, and the second arm 11 of the first hub 5 engages with the second engagement recess 8. Is released, the first arm 10 engages with the rear portion 7b of the first engagement recess 7 and the locking rod 3 is retracted as shown by the solid line in FIG. 1 to be in the unlocked state. In this unlocked state, the tip of the click device 15 is in abutting engagement with the first abutting surface 18, and the unlocking position is positioned.

As an operation member for retracting the lock rod 3,
Although the thumb turn and the cylinder are used in this embodiment, the thumb turn or the cylinder alone or the lever handle may be used.

Further, the lock rod handle 4 can be formed integrally with the lock rod 3. The restricting member 45 is not limited to that of the above-described embodiment, but is optional.

In FIG. 1, 30 is a front plate of the lock case 1 and 31 is an entrance / exit of the lock rod 3.

[0031]

According to the first aspect of the present invention, as described above, the first hub having the first arm, the second arm and the small gear and actuating the locking rod is provided with a thumb turn, a cylinder or the like. The second hub having the first gear, the second hub, and the third contact surface having the large curvature surface and the large gear meshing with the small gear is operated by the operating member without directly operating the operating member by the operating member. By doing so, the first hub is indirectly actuated and the lock rod is retracted and retracted, so that the operation can be performed smoothly. Moreover, since the gear ratios of the large gear of the second hub and the small gear of the first hub are made different, it is possible to operate with a small force and at the same time a small rotation angle with respect to the second hub (for example, 9
At 0 °), the amount of protrusion of the locking rod can be made sufficiently large, so that it is possible to provide a safe minding lock for crime prevention in this locked state.

Further, in the click device of the present invention, the biasing force of the click spring is brought into contact with any one of the first, second and third contact surfaces of the second hub having the large curvature radius surface. Since they are engaged with each other, the effect of the click spring is smooth, and the unlocking position, the locking position and the main locking position are smoothly positioned. That is, the feeling of operation can be made smooth.

According to the second aspect of the present invention, the roller provided at the tip of the click device has the first and second rollers of the second hub.
And since it can smoothly move over the third contact surface,
The desired positioning can be reliably performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an unlocked state in an embodiment of the present invention.

FIG. 2 is a front view taken along the line II-II in FIG.

FIG. 3 is a vertical sectional side view showing a state of a padlock.

FIG. 4 is a vertical cross-sectional side view showing the locked state.

FIG. 5 is a perspective view of a lock rod.

FIG. 6 is a perspective view of a first hub.

FIG. 7 is a front view of FIG.

[Explanation of symbols]

 1 Lock Case 3 Lock Rod 3a Locking Part 4 Lock Rod Handle 4a One Side Wall 4b Other Side Wall 5 First Hub 5a Small Gear 6 Second Hub 7 First Engagement Recess 8 Second Engagement Recess 10 First Arm 11 Second arm 11a Large gear 14 Operating rod 15 Clicking device 16 Spring 18 First contact surface 19 Second contact surface 20 Third contact surface 25 Arm 40 Receiving member 42 Receiving hole 45 Restricting member 51 Engagement for padlock Perforated door b door frame

Claims (2)

(57) [Scope of utility model registration request] 1. A receiving member 40 having a receiving hole 42 for the present locking.
A restriction member 45 having an engagement hole 51 for a padlock,
A lock rod 3 which is fitted into and retractable from the lock case 1 and has a first engagement recess 7 and a second engagement recess 8 and which is projected in two stages by rotation of an operating member such as a thumb turn or a cylinder. When,
A click device 1 provided in the lock case 1 for positioning an unlocking position, a caution lock position, and a main locking position of the lock rod 3, respectively.
5 and the locking portion 3 of the lock rod 3 when the lock rod 3 is minimally projected.
a is engaged with the lock-engaging engagement hole 51 of the restriction member 45 to enable the door to be opened at a certain angle, and engages with the main locking receiving hole 42 of the receiving member 40 when the locking rod 3 is maximally projected. In the lockout lock adapted to be fully locked, a first arm 10 engaged with the first engagement recess 7 of the lock rod 3 and a second engagement recess 8 are engaged in the lock case 1. A second arm 11 and a first hub 5 having a small gear 5a, and a large gear 11a meshing with the small gear 5a of the first hub 5.
And a second hub 6 having first, second and third abutment surfaces 18, 19, 20 each having a surface with a large radius of curvature and rotated by the operating member. The click device 15 has its tip abuttingly engaged with any one of the first abutment surface 18, the second abutment surface 19 and the third abutment surface 20 of the second hub 6 by the spring 16. A caution tablet characterized by being urged to 2. A roller 25 is provided at the tip of the click device 15.
The padlock according to claim 1, wherein b is provided, and the roller 25b is brought into contact with and engaged with any of the first, second, and third contact surfaces 18, 19, and 20 of the second hub 6.