JPH11256897A - Clutch mechanism of electric lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the clutch mechanism of an electric lock and improve its reliability. SOLUTION: This clutch mechanism comprises a locking board 14 guided in a movable manner in up-down direction, a locking piece 19 which links to and secures the locking board 14 from a lateral direction when a locking or lock releasing signal is generated, a retractor plate 9 which links the upper end to the locking board 14 through a spring 25 and links the other end to a handle through the refractor, and a hook body 6 which is inserted between the retractor plate and the locking board, supports a shaft pin 26 at the base end by means of retractor plate 9 in a freely rotatable manner, and a hook body 6 forming a hook portion at the free end. And an operation pin 27 attached to the hook body 6 is linked to a guide groove 18 formed to the locking board 9 and projects out the free end of the hook body 6 laterally at the time of relative motion of both the locking board 14 and retractor board 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch mechanism for controlling linkage between an electric lock locking / unlocking mechanism and operating members such as knobs and handles, and more particularly to a clutch mechanism having a simple structure and reliable operation. .

[0002]

2. Description of the Related Art Locking / unlocking operations of a lock called a so-called electric lock differ depending on the type of an electric lock. When an unlocking signal is generated by operating a ten-key device, for example, a micromotor drives a deadbolt. There is an electric lock of a type in which an electromagnetic actuator actively controls a locking mechanism.

On the other hand, like an electric lock employing the clutch mechanism of the present invention, when a lock or unlock signal is generated, when the knob or handle is operated, the lock and unlock mechanism alternately locks and unlocks, and the electromagnetic actuator simply operates the knob or lock. There is a type in which the linkage between the handle and the locking / unlocking mechanism is controlled, in other words, a type in which the clutch is controlled. Electric locks of this type are characterized by low power consumption, and have been widely used in recent years.

An electric lock of this type is disclosed in, for example,
-264086.

The clutch mechanism of this electric lock is, in short, linked to a magnet holder (43) that is locked by the magnetic attraction of the electromagnet when an unlocking signal is generated, and to the magnet holder (43) via a spring, And a retractor plate (32) driven by a handle and a direction to separate the magnet holder (43) from the electromagnet.

When no unlock signal is generated, the magnet holder (43) and the retractor plate (3)
2), the hook body does not come out of the magnet holder (43) to the locking / unlocking mechanism because there is no relative movement between the two.

On the other hand, when an unlocking signal is generated, the magnet holder (43) is locked by the electromagnet, and only the retractor plate (32) moves in a direction away from the electromagnet, so that the magnet holder (43) and the retractor plate ( 32), the hook body is linked to the locking / unlocking mechanism using this movement, and thereafter, the locking / unlocking mechanism is controlled by the movement of the retractor plate (32).

[0008]

By the way, the clutch mechanism described in Japanese Patent Application Laid-Open No. 9-264086 is
Since the electromagnet is a type that directly attracts the magnet holder (43) and the retractor plate (32) operates in a direction to separate the magnet holder (43) from the electromagnet,
For example, if an impact is applied to the mechanism during the operation of the handle or if the magnet holder (43) is caught between the retractor plate (32), the magnet holder (43) is separated from the electromagnet.

[0009] In this case, even if a password is inputted by a ten-key device and an unlocking signal is generated, locking and unlocking cannot be performed.
In short, this clutch mechanism still has room for improvement in terms of operating reliability.

An object of the present invention is to eliminate the disadvantages of the above-mentioned conventional clutch mechanism, and to provide a clutch mechanism having a simple structure and reliable operation.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a locking board which extends in the operating direction of a driving member of an unlocking mechanism and is guided so as to be movable in the same direction. It is guided movably in the direction intersecting with the board, and when a locking / unlocking signal is generated, it is driven by an electromagnetic actuator to engage with the locking pick board, and the lock piece that locks this is the same as the position where it overlaps the locking board The retractor plate is guided so as to be movable in the direction, and one end is engaged with the locking board via a spring, and the other end is linked to the handle or knob via the retractor, and the retractor plate and the locking board And a hook body having a base end rotatably supported by a retractor plate and a hook formed at a free end. An operation pin is implanted in one of the hook body and the locking board, and a guide groove that engages with the operation pin is formed along the length thereof on the other, and the guide groove is In the initial stage of the relative movement between the locking board and the retractor board,
A first operating groove for guiding an operating pin in a direction in which a free end of the hook body is engaged with a driving member of the locking / unlocking mechanism, and a second operating groove which is substantially parallel to the locking board thereafter are provided in series. I do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. The clutch mechanism indicated by 1 in FIG.
It controls linkage between a locking / unlocking mechanism 3 provided substantially at the center of the inside escation 2 mounted on the indoor side and a later-described retractor 4.

By the way, the inside escutcheon 2 is mounted such that the front side is joined to the inner free side edge of the door. Although the opening of the inner escation 2 is actually covered by a cover plate, it is not shown in FIG.

In this type of electric lock in which the locking / unlocking mechanism 3 and the clutch mechanism 1 are combined, a password is input by operating the outdoor numeric keypad device, and the input password is registered in the electric lock in advance. When the password matches the password, an unlocking signal is generated and the electromagnetic actuator 5 is energized.

Then, the clutch mechanism 2 is operated, and the hook body 6 is moved to the slider 7 as a driving member of the locking / unlocking mechanism 3.
With the notch 8 of

When a knob or handle (not shown) is operated in this state, the retractor 4 connected to these operating members via an operating shaft having a rectangular cross section rotates clockwise or counterclockwise in FIG.

The tip of the retractor 4 is in contact with the bent portion of the retractor plate 9 from above.
The retractor plate 9 is lowered integrally with the hook body 6 against the elasticity of zero.

Then, the hook body 6 pushes the slider 7 of the locking and unlocking mechanism downward, and the driving plate 12 integrated therewith drives the operating shaft 13 to rotate, for example, 90 degrees, and is connected to the operating shaft. Unlock or lock the locking mechanism in the lock box.

The locking / unlocking mechanism is configured to alternately repeat the locking operation and the unlocking operation each time the slider 7 is moved, but since the configuration is not a main part of the present invention, a detailed description is omitted. .

The present invention relates to the clutch mechanism 1, which is a main part of the electric lock described above, and will be described in further detail below.

In FIG. 1, reference numeral 14 denotes a locking board which is a main component of the clutch mechanism. The locking board 14 extends in a vertical direction which is a moving direction of a slider 7 which is a driving member of the locking / unlocking mechanism. And are movably guided in the same direction.

The locking board 1 in the illustrated embodiment
Reference numeral 4 denotes a rectangular bar having a rectangular cross section, as shown in FIGS. 2 and 3, an engagement recess 15 for engaging a lock piece, which will be described later, on the upper inner surface thereof, and a spring housing in the center front. Each of the cavities 16 is formed.

Further, a shallow step portion 17 for accommodating the hook body 6 (see FIGS. 1 and 3) is formed in front of the lower end portion of the locking board 14, and the bottom surface of the shallow step portion 17 has The guide groove 18 whose overall shape is, for example, a substantially inverted J-shape
Are formed, and the lower end of the guide groove 18 is open to the lower end surface of the locking 14.

The guide groove 18 has a second operating groove 22 extending vertically below the guide groove 18 and a second operating groove 2.
At the upper end of 2, a short first operating groove 21 inclined obliquely outward (obliquely rightward) is provided continuously.

On the other hand, as shown in FIG. 1, a lock piece 19 is guided to the left of the engaging recess 15 of the locking board so as to be movable in the left-right direction crossing the locking board.

As shown in FIG. 4, the lock piece 19 is a rectangular parallelepiped block having a narrowed tip portion engaged with the engagement concave portion 19, and is elongated so as to penetrate the center portion thereof in the thickness direction. The spring hole 19a is open.

As shown in FIG. 1, a loosely wound coil spring is wound around the output shaft of the electromagnetic actuator 5 as a micromotor disposed above the lock piece 19. Both ends of the spring 23 are extended in parallel with each other, and the spring holes 19a of the lock piece are formed.
Is engaged.

On the other hand, a drive pin 24 projects from the outer peripheral surface of the output shaft of the electromagnetic actuator 5, and this drive pin 24 is engaged with the sparsely wound coil spring 23.

When the electromagnetic actuator 5 rotates, the drive pin 24 drives the sparsely wound coil spring 23 in the axial direction of the output shaft, that is, in the left-right direction in FIG. Drive in the direction.

The electromagnetic actuator according to the present invention does not adopt the above-described configuration, and for example, a plunger of a latching solenoid can be directly employed as the lock piece.

On the other hand, as shown in FIGS. 1 and 3, the retractor plate 9 is vertically movably guided at a position overlapping with the locking board 14, and the elasticity of the retractor springs 11, 11 is adjusted. Urged upward by

The tip of the upper end of the retractor plate 9 that overlaps with the locking board 14 is bent toward the locking board 14 and engaged in the spring storage cavity 16.

A spring 25 as a compression coil spring is accommodated in the spring accommodating cavity 16. The upper end of the spring 25 is abutted against the upper bent portion of the retractor plate 9, and the lower end is abutted against the lower surface of the spring accommodating cavity 16. I have.

With the above-described structure, when the retractor plate 9 is raised, the locking board 14 is directly pushed up so as to be lifted, but when the retractor plate 9 is lowered, the locking board 14 is actuated via the spring 25 so as to be pushed down.

On the other hand, as shown in FIGS. 1 and 3, between the locking board 14 and the retractor plate 9, the hook body 6 is housed in a shallow step 17 formed in the former. It is inserted.

The hook body 6 has a retractable plate 9 rotatably supported by a retractor plate 9 at a free end (upper end) of a pivot pin 26 protruding from a base end (lower end) outer surface by plastic working. Has a hook.

An operating pin 27 projects from an inner surface of the hook body 6 above the support pin 26, and the operating pin 27 is engaged with the guide groove 18.

In the clutch mechanism according to the present invention having the above-described structure, in a normal state in which no locking / unlocking signal is generated and no door knob or handle is operated, as shown in FIG. The locking board 14 is in a free state because the locking board 14 is out of the fitting recess 15.

The retractor plate 9 pushes up the hook body 6 through engagement with the support pin 26, and the operating pin 27 is implanted in the hook body so that the operating pin 27 is at the upper end of the guide groove 18, that is, the first pin. It is in elastic contact with the upper edge of the operating groove 21 (see FIG. 2).

Therefore, the hook formed at the free end of the hook body 6 is substantially at an angular position overlapping with the locking board 14 and is outside the movement locus of the notch 8 of the slider of the locking / unlocking mechanism.

When the handle is operated in this state, the retractor 4 pushes down the retractor plate 9 as described above, but the locking board 14 is also pushed down via the spring 25, and the hook body 6 is lowered as a result of the two being lowered together. It descends while maintaining the angular position shown in FIG.

At this time, since the slider 7 of the locking / unlocking mechanism is immovable, the locking / unlocking cannot be performed only by the idle rotation of the handle.

When the locking / unlocking signal is generated, the electromagnetic actuator 5 is energized, the micromotor rotates in a predetermined direction, and the lock piece 19 engages with the engaging recess 1 of the locking board.
5, the locking board 14 is fixed in the lock box.

When the steering wheel is operated in this state, as shown in FIG.
Is left in the normal position, and the spring 25 is independently lowered while being compressed.

Then, a relative displacement occurs between the locking plate 14 and the retractor plate 9, and the hook body 6 also descends integrally with the retractor plate 9, so that the operating pin 27 is moved to the first position.
Sliding diagonally downward and leftward in the operating groove 21, the hook of the hook body 6 moves to the left and engages with the notch 8 of the slider of the locking and unlocking mechanism.

When the handle is further turned, as shown in FIG. 6, the retractor plate 9 reaches the maximum lowered position. By this time, the slider 7 of the locking / unlocking mechanism, which is integrally lowered, locks the lock in the lock box. Lock or unlock the locking mechanism.

After releasing the handle after operating the handle,
The retractor 4 and the retractor plate 9 are raised by the elasticity of the retractor spring 11 (see FIG. 1), and the slider 7 is raised by the elasticity of the slider spring 28, and returns to the original normal position.

In the illustrated embodiment, the support pin 29 protrudes from the hook body 6 and is supported by the pin hole on the retractor plate 9 side.
A shaft pin may be protruded from the inner surface of the hook body, and a pin hole may be formed on the hook body side.

Also, contrary to the illustrated embodiment, an operating pin 27 may be protruded from the shallow step 17 side of the locking board 14 to form the guide groove 18 in the hook body 6.

[0050]

As is apparent from the above description, according to the present invention, when the locking signal is generated, the lock piece for locking the locking board is engaged from the direction intersecting with the locking board. Even if an impact is applied, or even if the locking board and the retractor plate are caught during relative movement, the locking does not move and the operation is reliable.

Also, there are various effects such as simple structure and reliability as a whole.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of an electric lock employing a clutch mechanism according to an embodiment of the present invention.

FIG. 2 is a front view of a locking board alone.

FIG. 3 is a partial cross-sectional side view of a clutch mechanism.

FIG. 4 is an external perspective view of a lock piece.

FIG. 5 is a diagram for explaining the operation of a clutch mechanism;
7 shows an initial stage of relative movement between the locking board and the retractor plate.

FIG. 6 is a diagram for explaining the operation of a clutch mechanism;
5 shows the end stage of the relative movement between the locking board and the retractor board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch mechanism 3 Locking / unlocking mechanism 4 Retractor 5 Electromagnetic actuator 6 Hook body 7 Slider 8 Notch 9 Retractor plate 11 Retractor spring 14 Locking board 15 Engaging recess 16 Spring storage cavity 17 Shallow step 18 Guide groove 19 Lock piece 21 First working groove 22 Second working groove 25 Spring 26 Support pin 27 Working pin

Claims (1)

[Claims] 1. A locking board extending in a direction in which a driving member of an locking / unlocking mechanism is actuated in a lock box of an electric lock and guided in a movable manner in the same direction, and movable in a direction intersecting the locking board. When an unlocking signal is generated,
A lock piece driven by an electromagnetic actuator to engage with the locking board and lock the locking piece, and is guided movably in the same direction at a position overlapping with the locking board, and one end is engaged with the locking board via a spring. At the same time, a retractor plate whose other end is linked to a handle or a knob via a retractor, is inserted between the retractor plate and the locking board, extends in the direction of movement thereof, and has a proximal end. It has a hook body which is rotatably supported by the retractor plate and has a hook at its free end, and an operating pin is implanted in one of the hook body and the locking board, and Along its length,
A guide groove for engaging with the operating pin is formed. The guide groove is formed in a direction in which the free end of the hook body engages with the driving member of the locking / unlocking mechanism in an initial stage of the relative movement between the locking board and the retractor plate. A clutch mechanism for an electric lock, wherein a first operating groove for guiding an operating pin and a second operating groove that is substantially parallel to the locking board thereafter are provided in series.