JP2563146B2 - Automatic sliding door locking / unlocking device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a locking / unlocking device using a solenoid of a sliding door type automatic door that opens and closes along a doorway of a building, and particularly one locking / unlocking device. The present invention relates to a structure that can be easily switched between a locking type when energized and an unlocking type when energized.

[Prior Art] A sliding door type automatic door (1) is, as shown in Fig. 9, a door rail (3) extending along a lower edge of a Kamoi (2) at a doorway of a building, and door cars (4) (4). ) Via a motor, and a drive unit (not shown)
The doorway is opened and closed by traveling back and forth in the opening and closing directions.

The locking / unlocking device (electric lock) attached to such an automatic door (1) regulates the movement of the claw piece (5) provided near the door closing side of the kamoi (2) by a solenoid, It is general that the locking piece (6) attached to the upper edge of the automatic door (1) is locked by the claw piece (5). For example, in the locking / unlocking device (7) shown in FIG. 10, the rocking lever (10) is rocked about a horizontal support pin (9) planted in a frame (8) attached to the Kamoi (2). The movable lever is movably supported, the lowering of the swing end of the swing lever (10) is restricted by a stopper (11), and a claw piece (centered around a first fulcrum pin (12) planted at this swing end ( 5) is swingably supported, and the swing range of the claw piece (5) is pin-shaped projection which is planted in the swing lever (10) in the large diameter hole (5a) of the claw piece (5). (13) is loosely fitted, and the roller (14) loosely fitted to the first fulcrum pin (12) is swingably supported by the frame (8) at the tip of a holding lever (15). It is pressed and regulated, and the presser lever (15) is swung by the tension spring (16) and the plunger (18) of the solenoid (17).

This locking / unlocking device (7) is of an unlocking type when energized (the solenoid is locked without energizing), and is provided on the swing lever (10) by the back and forth movement of the plunger (18) of the solenoid (17). Locking and unlocking are decided depending on whether the roller (14) is fixed or opened.

That is, when the plunger (18) is advanced as shown in FIG. 10, the swing end of the presser lever (15) presses the roller (14) and prohibits the swing lever (10) from rising. It will be locked. On the other hand, when the plunger (18) retracts, the swinging end of the presser lever (15) moves to the roller (14).
Away from the lock lever, the lock lever is unlocked to allow the swing lever (10) to rise.

The locking of the device (7) works only when the automatic door is about to travel from the door closing side to the door opening side.

The automatic door (1), as shown in FIG.
When trying to move to the door opening side, the locking piece (6) of the automatic door hits the claw piece (5). At this time, in the locked state where the presser lever (15) is pressing and fixing the roller (14),
The rocking lever (10) cannot move upward, and the claw piece (5)
However, since the retracting direction is upward and different from the pressing direction, it cannot move and stops the automatic door (1). But Laura (14)
When the presser lever (15) is away from the
As shown in the figure, the swing lever (10) swings upward together with the claw piece (5) to allow the door to travel.

On the other hand, as shown in FIG. 12, when the automatic door (1) travels from the door opening side to the door closing side, it is pushed to the locking piece (6) regardless of whether it is locked or unlocked. Only the disengaged claw piece (5) swings and retracts upward to allow passage of the automatic door (1) within a range in which the pin-shaped projection (13) can move within the large-diameter hole (5a).

Although the conventional type is an unlocking type when energized, if the specifications of the automatic door are different, it is necessary to supply a locking type when energized (unlocked when deenergized). In this case, install the tension spring (16) and solenoid (17) in the opposite direction, or install the tension spring (16) in reverse and replace the solenoid (17) with the PULL type (suction when energized). It is necessary to separately manufacture different types such as PUSH type (extruded when energized).

[Problems to be Solved by the Invention] As described above, the conventional locking / unlocking devices are the unlocking type when energized (locked when de-energized) and the locking type when energized (unlocked when de-energized).
Since the structure is different for and, even if it is the same model, it was necessary to manufacture two types to match the specifications of the automatic door.

For this reason, even though the models are the same, it is necessary to perform the same production management and inventory management as in the case of the two models, which hinders cost reduction.

Therefore, it is an object of the present invention to provide a structure capable of easily switching one type of locking / unlocking device between an energized locking type and an energized unlocking type.

[Means for Solving the Problems] A locking / unlocking device for a sliding door type automatic door provided by the present invention is a sliding door type automatic door that opens and closes along a doorway of a building. The frame fixed to the Kamoi along the running direction of the automatic door and the first horizontal support pin provided in the frame are pivoted about the rotation center, and the pawl provided on the swing end is used to swing the automatic door. A swing lever for restraining / releasing the locking piece attached to the upper end and a second horizontal support pin provided above the frame are used as the center of rotation for swinging, and the swing lever of the swing lever is moved forward when moving forward. A pressing lever that presses and fixes the provided roller from above, a first spring that biases the pressing lever toward the forward position, a plunger that moves back and forth, and a plunger that is inserted and held, and is displaced. By exciting the plunger A solenoid consisting of a coil part that attracts to the center, a coil support part that can be attached to the frame by sliding the coil part to the forward or backward position, the tip of the plunger and the swing end of the presser lever. Has a spring force larger than that of the first spring, and is attached to the frame when being switched to the locking type when energized, and urges the connecting member in the backward direction away from the swing lever. And a second spring, and depending on whether or not the second spring is attached and the position where the coil portion is attached, one device can be switched between a locked type when energized and an unlocked type when energized. Characterize.

[Operation] Locking and unlocking are determined by advancing and retracting the solenoid plunger. Therefore, the position of the plunger when the solenoid is not energized is determined by the biasing direction of the spring mechanism. For example, when the biasing direction of the spring is in the forward direction, it is an unlocking type when energized, and when it is in the backward direction, it is a locking type when energized.

The solenoid attracts the plunger to the opposite side against the biasing force of the spring mechanism, and the mounting position of the coil portion by the coil supporting portion is determined according to the biasing direction of the spring mechanism. For example, when de-energized, the plunger in the forward position is determined to reach the retracted position when excited, and the plunger in the retracted position is determined to reach the advanced position.

As described above, in the device of the present invention, the energization locking type and the energization unlocking type can be easily switched by changing the biasing direction of the spring mechanism and the mounting position of the coil portion of the solenoid. .

Particularly, according to the present invention, a pressing lever for pressing and fixing the roller provided at the swing end of the swing lever from above is provided, and the swing lever is moved by the solenoid plunger via the connecting member, so that the automatic door is The force for pushing up the rocking lever can be applied to the presser lever to prevent an unreasonable force from being applied to the solenoid side, and the deterioration or damage of the solenoid can be prevented.

[Embodiment] A specific example of the apparatus of the present invention will be described with reference to FIGS. 1 to 6.

In these drawings, (8) is a frame having an inverted U-shaped cross-sectional shape, which is located above the doorway of the building and close to the closed position of the automatic door (1) along the running direction of the automatic door. It is fixed.

(10) is a rocking lever having an inverted U-shaped cross-sectional shape, which can be rocked between the opposing walls of the frame with the horizontal support pin (9) planted in the frame (8) as the center of rotation. It is supported.

(11) is a first stopper which is placed in the frame (8) so as to be opposed to the horizontal support pin (9), and which is a swing lever (1
The lower end of the swing end (10a) of (0) is contacted to determine the lowering limit.

(5) is a claw piece having an inverted U-shaped cross-sectional shape, with the first horizontal support pin (12) planted at a position near the swing end (10a) of the swing lever as the center of rotation. , Swing lever (1
The swing end (5d) is attached to the horizontal support pin (9) between the opposing walls of (0).
It is swingably supported toward. This nail piece (5)
Has a large-diameter hole (5a) that determines the swing range, and the side face (5b) on the swing end side has a serrated locking piece (5a) fixed to the upper edge of the automatic door (1). 6) is a vertical surface that locks the lower surface (5c), and a sloped surface that descends toward the swing end is formed on the lower surface (5c).

(13) is a pin-shaped projection that is planted on the rocking lever (10).
The first swing is located between the horizontal support pin (9) and the first fulcrum pin (12), and is loosely fitted into the large-diameter hole (5a) formed in the claw piece. The swing range of the claw piece (5) with respect to the lever (10) is determined.

A roller (14) is rotatably fitted as a pressing force receiving member on the second horizontal support pin (12).

Reference numeral (15) is a holding lever having a second horizontal support pin (19) planted at a fixed position above the frame as a rotation center, and the swinging end (tip) thereof pushes the roller (14) from above. Then, it is possible to swing upward by releasing the pressure.

(20) is a solenoid, which is composed of a coil part (21) and a plunger (22) which moves in the coil part (21) and alternately moves to a forward position A for locking and a backward position B for unlocking. Composed. The tip of the plunger (22) is linked to the presser lever (15) by a strip-shaped connecting member (23), and the coil portion (21) is connected to the frame (as shown in FIGS. 3 and 4). By the elongated hole-shaped coil support portion (24) provided in 8), positioning and fixing are performed so as to occupy either of the two positions of the forward movement side and the backward movement side.

(25) is a spring mechanism, one end of which is a frame (8)
Fixed to the first spring (26) and spring stop pin (3
It is composed of a second spring (27) fitted in 8). The other end of the first spring (26) is fixed to the presser lever (15) and urges the plunger (22) in the forward direction [rotates the presser lever (15) counterclockwise in the drawing to rotate the roller (15). Direction to hit (14)]. Further, one end of the second spring (27) is locked to the spring stop projection (28) planted in the frame (8), and the other end thereof is spring lock pin (28) planted in the connecting member (23). 29) and urge the plunger (22) in the backward direction. The second spring (27) is set to have a stronger spring force than the first spring (26), and when both springs (26) (27) are fitted, the entire spring mechanism (25) is As
When the plunger (22) is biased in the backward direction and the second spring (27) is disengaged, the first spring (2
The plunger (22) is biased in the forward direction only by the biasing force of 6).

The locking and unlocking operations by the claw piece (5) in this configuration are the same as those described above with reference to FIGS. 10 to 12.

A method of switching between the unlocking type when energized (Fig. 5) and the locking type when energized (Fig. 6), which is a feature of the present invention, will be described.

As shown in FIGS. 5 (a) and 5 (b), the unlocking type when energized is
The second spring (27) is not activated, and the end portion of the coil portion (21) is aligned and fixed to the position B of the coil supporting portion (24) near the backward direction. This means that, in particular, the second spring (27) may or may not be installed,
Both ends of the spring mechanism (25) are removed from the spring stopper pins (projections) (28) (29) so that the plunger (22) is urged in the forward direction, and the coil portion (21) of the frame (8) is removed. This is performed by sliding the coil support (24) in the backward direction along the elongated hole and refastening the screw (30).

In this state, if the solenoid (20) is not excited,
As shown in FIG. 5 (a), the plunger (22) is moved forward by the urging force of the spring mechanism (25) to be locked.
When the solenoid is excited, as shown in FIG. 5 (b), the plunger (22) is retracted against the spring force of the spring mechanism (25) to be unlocked.

In addition, in order to make the lock type when energized, as shown in FIGS.
As shown in FIG. 5, the second spring (27) is actuated to urge the plunger (22) in the backward direction in the entire spring mechanism (25), and the end of the coil part (21) is moved to the coil support part (2).
This is done by aligning and fixing to position A near the forward direction of 4). FIG. 6 (a) shows the unlocked state without power supply,
Figure (b) shows a locked state in which electricity is applied.

The coil support part (24) has a structure using the long hole and the screw (30), but other structures such as a groove for sliding and supporting the coil part (21) and a locking pin for positioning. It is also possible to adopt a structure such as a combination of

Further, the spring mechanism (25) is provided with the plunger (2
It is sufficient that the urging direction with respect to 2) can be easily switched, and for example, the structure shown in FIGS. 7 (a) (b) or 8 may be adopted.

The spring mechanism shown in FIGS. 7 (a) and 7 (b) is configured by concentrically connecting two compression springs (31) and (31) with a connecting ring (33) having a pin insertion hole (32). .
The both ends of the connected spring are the coil part (21) and the locking part (3) extended from the coil part (21).
The plunger (2
The positioning pin (35) is externally fitted to the tip of 2) or its extension, and is inserted into the connecting ring (33) and a plurality of positioning holes (36) (36) provided at the tip of the plunger (22) or its extension. The biasing direction is switched by selectively inserting the compression spring so that the compression amount of one compression spring is larger than that of the other compression spring.

The spring mechanism shown in FIG. 8 uses only one coil spring (37). Two spring stopper protrusions (28) (28a) are provided on the frame (8), and the coil spring is used when the lock type is energized. Attach (37) to the solid line position, and to the broken line position when unlocked when energized.

Further, the structure of the rocking lever and the claw piece of this locking / unlocking device is not limited to that of the illustrated example, and the claw piece and the rocking lever are integrated, a combination of a plurality of rocking levers, etc.
It suffices that the locked state and the unlocked state are determined by the forward and backward movement of the plunger.

[Effects of the Invention] According to the present invention, one locking / unlocking device for an automatic door can be easily switched to a locking type when energized and an unlocking type when energized without replacing parts, thereby reducing production costs. And the storage cost can be reduced.

[Brief description of drawings]

1 and 2 show one embodiment of the locking / unlocking device of the present invention, FIG. 1 is a sectional view seen from the front, and FIG. 2 is a schematic sectional view taken in a direction orthogonal to the longitudinal direction. It is a figure. 3 and 4 show a coil support portion provided on the frame, FIG. 3 is a rear view of the frame, and FIG. 4 is a sectional view taken along the line AA of FIG. 5 (a) (b) and 6 (a) (b) show the locking / unlocking device of the present invention in the energized locking type (FIG. 5) and the energized unlocking type (FIG. 6). It is sectional drawing which divides and shows the case where it sets to a non-energized state (a) and an energized state (b). 7 (a) (b) and FIG. 8 show different embodiments of the spring mechanism, FIG. 7 (a) and FIG. 8 are front views, and FIG. It is a partially expanded sectional view of FIG. FIG. 9 is a front view showing an automatic door equipped with a locking / unlocking device. 10 to 12 show an example of a conventional structure of a locking / unlocking device. Fig. 10 shows a locked state, Fig. 11 shows an unlocked state, and Fig. 12 shows an automatic door closed from the door opening side. It is a figure which shows the state which runs to the side. (1) …… Automatic door, (5) …… Claw piece, (8) …… Frame, (9) …… Horizontal support pin, (10) …… Swing lever,
(11) …… Stopper, (12) …… First fulcrum pin, (2
0) Solenoid, (21) Coil, (22) Plunger, (24) Coil support, (25) Spring mechanism, (26) First spring, (27) … Second
Spring.

Claims (1)

(57) [Claims] 1. A sliding door type automatic door that opens and closes along a doorway of a building, and a frame fixed along a running direction of the automatic door in a Kamoi near the door closing position above the automatic door, A swing lever that swings around a first horizontal support pin provided as a rotation center, and a claw piece provided at the swing end locks and releases a locking piece attached to the upper end of the automatic door, and a swing lever of this frame. The second horizontal support pin provided above is pivoted about the center of rotation, and when moving forward, the pressing lever that presses and fixes the roller provided at the rocking end of the rocking lever from above, and the pressing lever is moved forward. A solenoid including a first spring biasing to the position side, a plunger that moves back and forth, and a coil part that inserts and holds this plunger and that attracts the biased plunger to the center by excitation, and the coil part. In front A coil support part that can be slid to a position or a retracted position and attached to the frame, a connecting member that links the tip of the plunger and the swing end of the presser lever, and a spring force larger than the first spring. A second spring that is attached to the frame when being switched to the locking type when energized, and that biases the connecting member in the backward direction away from the swing lever. A locking / unlocking device for a sliding door type automatic door, characterized in that one device can be switched between a locking type when energized and an unlocking type when energized, depending on the combination of the presence or absence and the mounting position of the coil.