JP3955915B2 - Electric lock for sliding door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric lock for sliding doors, and more particularly to an electric lock for sliding doors provided with a switch mechanism for detecting whether or not the sliding door is completely closed.
[0002]
[Prior art]
An example of a sliding door electric lock is disclosed in, for example, Japanese Utility Model Publication No. 51-18893. This type of electric lock is generally provided with a first switch (mechanism) for detecting the locking or unlocking state of a latch locking / unlocking mechanism that is generally housed in a lock case.
[0003]
By the way, the sliding door electric locks installed in special nursing homes and various facilities are in sliding contact with the sliding door side engaging means (recessed engagement bracket, dead bolt, etc.) in addition to the first switch (mechanism). In addition, it is desirable to provide a switch or a second switch mechanism for detecting the open / closed state (especially the closed state) of the sliding door via an operating body or the like that moves backward in the lock case. At that time, since the lock case of the electric lock for sliding doors is generally laid horizontally in the upper frame (or lower frame) of the door frame, the height dimension is desirably short and should be made as compact as possible. is there. It is also desired to simplify the operating member for turning on and off the switch for the sliding door full-closed signal detection switch and to prevent the contact of the operating member from causing a failure of the switch.
[0004]
Accordingly, the applicant has proposed an example of an electric lock for sliding doors that has not yet been filed, and provided the second switch mechanism for detecting a closing signal in the electric lock for sliding doors. This second switch mechanism includes an operating body that moves back as it is in the lock case as soon as it comes into sliding contact with the engaging means on the sliding door side, whereby the switch for detecting the open / closed state of the sliding door is “ON (ON), “OFF”.
[0005]
However, the proposed electric lock for sliding doors moves back in the height direction in the lock case when the operating body slides on the sliding door side engaging means, so that the height of the lock case is shortened. There was a problem that it was not possible. There is also a problem that the operation member for turning on and off the switch is not simple.
[0006]
[Problems to be solved by the invention]
In view of the above problems, the first object of the present invention is to shorten the height dimension of the lock case of the sliding door electric lock. The second object is to simplify the operation member for turning the switch on and off (or reduce the number of parts). The third object is to be able to take out an effective or reliable door closing signal. The fourth object is to allow the sliding door to be closed smoothly and to prevent the contact of the actuating member from causing a failure of the switch.
[0007]
[Means for Solving the Problems]
The electric lock for sliding doors of the present invention includes an engaging means 3 that is attached to the sliding door 1 via a spring member 18 so as to be movable up and down, and an unlocking and unlocking mechanism X including an inversion latch 4 that engages and disengages with the engaging means. a built-in, and, in the sliding door for electric lock comprising a horizontally provided has been tablet case 7 for the door frame side, the driving source 30 so as to face the latch 4 in the lock casing 7 and laterally disposed, also The sliding door full-closed signal detection switch is provided so as to face the opening 60 of the front plate 26 located between the drive source 30 and the latch 4 of the lock case 7 , while the engagement means includes the switch. An operating roller that is turned on and off is provided, and when the sliding door is fully closed, the operating roller passes through the latch and enters the opening and directly contacts the switch, while being engaged. When the sliding door is opened, the means reverses the latch. Exits et, characterized in that apart from the switch.
[0008]
In the above configuration, a plurality of engagement means including an operation roller for turning on and off the switch are provided on the sliding door side with a required interval. Here, the “required interval” refers to a clearance for ventilation space that normally cannot pass through by a person.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the embodiment of the present invention shown in the drawings is engaged with and disengaged from the engaging means 3 which is attached to the upper end of the sliding door 1 or the upper rod 2 via a spring member so as to be movable up and down. The description will be made in relation to a lock case 7 that incorporates an electric lock locking / unlocking mechanism X including a latch 4 and a sliding door full-closed signal detection switch 5 and is preferably installed in the upper frame 6 of the door frame.
[0010]
First, the engaging means 3 will be described. As shown in FIGS. 1, 2, and 5, a plurality (2) of the engaging means 3 are provided with a required interval on a support box 11 that is provided on the upper side 2 of the sliding door 1.
[0011]
Thus, as shown in FIG. 5, the engaging means 3 is pivotally supported by the case-like dead bolt 12 and the dead bolt so that the peripheral end protrudes from the upper end opening of the dead bolt 12 in this embodiment. The actuating roller 13, a slightly wider vertical stopper wall 14 integrally provided at the lower end of the dead bolt 12, and a horizontal arm receiving portion formed at the lower edge of one end of the vertical stopper wall 14. 15 and. And the engaging means 3 is always a support box via the fitting protrusion 16 provided in the bottom wall part of the dead bolt 12, and the spring member 18 supported by the support protrusion 17 provided in the lower wall inner surface of the support box 11, respectively. It is energized in the direction of jumping out from 11.
[0012]
By the way, a manual drive means (thum turn or key cylinder) 20 is provided at the center of the support box 11, and the manual drive means 20 is centered (reference) at a portion near the center in the support box 11. ) Are provided with a pair of left and right finger-like synchronization arms 21, 21, and the finger portions 21 a, 21 a of these finger-like synchronization arms 21, 21 are provided with arm receiving portions 15, left and right engaging means 3, 3, 15 are respectively supported. Therefore, the left and right engaging means 3, 3 are synchronously retracted into the support box 11 against the spring force of the spring members 18, 18 based on the synchronous rotation amount of the finger-like synchronization arms 21, 21. To do.
[0013]
Next, the lock case 7 will be described. The lock case 7 is formed in a long box shape, and is installed horizontally in the upper frame 6 of the door frame, for example, as shown in FIG. Although the lock case 7 is not particularly designated, vertical guide long holes and shaft holes as a plurality of opposing guide portions are appropriately formed on the front wall and the rear wall. Also the lock case 7, that usually generally form part of the tablet case 7 long plate-shaped mounting plate and the front plate 26 is provided through the fastener 27.
[0014]
Next, each member which comprises the locking / unlocking mechanism X is demonstrated. As shown in FIGS. 3 and 4, reference numeral 30 denotes a solenoid as an example of a drive source. The solenoid 30 is installed in the lock case 7 so as to face the reversing latch 4 and is connected to the control device via a connection cord (not shown). 31 is an operating rod of the solenoid 30, and this operating rod 31 expands and contracts in the horizontal direction. In this embodiment, the operating rod 31 contracts when energized, while it expands when not energized. And the drive pin 33 protrudes in the horizontal direction which cross | intersects an operating rod at the protrusion front-end | tip part of the operating rod 31. FIG.
[0015]
Reference numeral 35 denotes a rotation lock member pivotally supported on the lock case 7 via a shaft 28 so as to be rotated by the expansion and contraction of the operating rod 31. The rotation lock member 35 allows the rotation of the latch 4 via the drive pin 33 in the locking direction (clockwise) that prevents the rotation of the latch 4 when the operation rod 31 contracts, while allowing the rotation of the latch 4 when the operation rod 31 extends. Each rotates in the unlocking direction (counterclockwise). 4, the rotation lock member 35 basically includes a pair of front and rear opposed bearing plates 36 and a connecting plate 37 that couples the pair of front and rear opposed bearing plates 36 at a position above the operating rod 31. It consists of.
[0016]
Thus, the lower end portion of the opposed bearing plate 36 has an inverted U-shaped cutout portion 38 that extends downward to engage with the operating rod 31 and engages with the drive pin 33. Further, a protrusion 39 which is a part of the connecting plate is formed on the left side of the upper end portion of the counter bearing plate 36, and the protrusion 39 is fixed to the inner wall surface of the upper wall of the lock case 7. It is possible to contact the switch (mechanism) 40 in a push manner. The first switch (mechanism) 40 is a member for detecting the locking / unlocking state of the latching / unlocking mechanism X, and when the rotation lock member 35 is rotated by the expansion / contraction movement of the operating rod 31 of the solenoid 30. The locking / unlocking signal of the locking / unlocking mechanism X is detected.
[0017]
In addition, a lock arm portion 41 having a slightly wider width is formed to protrude from a portion near the upper right end portion of the counter bearing plate 36, and this lock arm portion 41 is in contact with the vertical contact surface 51 of the latch 4 located in the lock case 7. A horizontal roller 42 in contact therewith is pivotally supported. The rotation lock member 35 is always urged in the unlocking direction (counterclockwise) by an unlocking spring 44 wound around the shaft 28.
[0018]
Next, the latch 4 pivotally supported by the lock case 7 will be described. As described above, the latch 4 has the vertical abutment surface 51 on the lock arm portion 41 side, and can be reversed via the shaft 53 provided on the latch 4 itself (or horizontally mounted on the lock case). The latch 4 functions as a stopper for the engaging means 3 on the sliding door side, but has an action of “reversing” when the sliding door 1 is opened. It is also possible to detect a signal indicating whether or not the sliding door 1 is completely closed by using the rotational movement of the latch 4, but in this embodiment, regardless of the action of the latch 4, the sliding door side is detected. The door closing signal of the sliding door 1 is detected by the operating roller 13 provided in the engaging means 3. Reference numeral 52 denotes a latch spring that urges the latch 4 in a direction protruding from the lock case 7.
[0019]
Next, the sliding door fully closed signal detection switch 5 will be described. As the sliding door full-close signal detection switch 5, for example, at least one micro switch having a movable contact piece 5a is used, and is electrically connected to a control means (not shown).
[0020]
The switch 5 is mounted on the lock case 7 so as to face the opening 60 of the lock case 7 (meaning the opening of the front plate 26 positioned between the solenoid 30 and the latch 4) 60 with reference to FIG. When the operating roller 13 does not enter the opening 60, the movable contact piece 5a is slightly inclined.
[0021]
In the above configuration, first, when the solenoid 30 is in a non-energized state, the operating rod 31 of the solenoid 30 is extended by the spring force of the spring 44 that urges the rotation lock member 35 in the unlocking direction. . That is, when the rotation lock member 35 is rotated counterclockwise about the shaft 28 by the spring force of the spring 44, the operating rod 31 is extended, and the horizontal roller (shaft) 42 of the rotation lock member 35 is The latch 4 is released from the rotation lock member 35 by being separated from the vertical contact surface 51.
[0022]
Therefore, when the sliding door 1 is moved in the opening direction A as shown in FIG. 6, the latch 4 is pushed by the dead bolt 12 of the right engaging means 3 (for convenience, this is referred to as the first engaging means) The axis 53 is reversed in the counterclockwise direction. At this time, the operating roller 13 of the engaging means 3 comes out while rolling from the opening 60 of the front plate 26, but as soon as the operating roller 13 moves backward, it leaves the movable contact piece 5 a of the switch 5. Therefore, the switch 5 can detect a signal in a state where the sliding door 1 is opened.
[0023]
When the left engaging means 3 of the sliding door 1 (for convenience, this is referred to as a second engaging means) enters the opening 60 while rolling the inner wall surface of the upper frame 6 and the front plate 26. The operating roller 13 of the second engaging means 3 contacts the movable contact piece 5 a of the switch 5. Accordingly, the state of the sliding door 1 (for example, a half-opened state) is obtained by using both detection signals composed of a combination of the plurality of engaging means 3 and 3 on the sliding door side and at least one switch 5 incorporated in the lock case 7. ).
[0024]
On the other hand, as shown in FIG. 7, when the sliding door 1 is moved from the (half) open state in the fully closed direction B, first, the operating roller 13 of the first engaging means 3 rolls on the tapered surface 54 of the latch 4. The first engaging means 3 is thereby retracted into the support box 11 against the spring force of the spring member 18. In this case, since the operation roller 13 rotates with respect to the latch 4, the frictional resistance between the members is small, and the sliding door 1 can be smoothly closed. As described above, in this embodiment, the latch 4 is only reversed and does not move backward into the lock case 7. Therefore, when the operation roller 13 picks up the taper of the latch 4, the first engagement means 3 moves backward into the support box 11.
[0025]
The first engaging means 3 is restored by the spring force of the spring member 18 because the operating roller 13 enters the opening 60 of the front plate 26 as soon as the operating roller 13 passes below the latch 4. As shown in FIG. 3, the operation roller 13 directly contacts the movable contact piece 5 a of the switch 5. Thereby, the fully closed state of the sliding door 1 can be grasped | ascertained, for example. When the sliding door 1 is completely closed in this way, the operating rod 31 of the solenoid 30 contracts thereafter, and the latch 4 is locked.
[0026]
【Example】
The sliding door side engaging means 3 described in the embodiment of the invention includes a case-like dead bolt 12 and an operation that is pivotally supported by the dead bolt so that a peripheral end portion protrudes from an upper end opening of the dead bolt 12. A roller 13, a slightly wider stopper vertical wall 14 integrally provided at the lower end portion of the dead bolt 12, and a horizontal arm receiving portion 15 formed at one end lower edge of the stopper vertical wall 14; Consists of.
[0027]
However, the engaging means 3 is not necessarily required to have the operating roller 13 as a constituent element. For example, instead of the operating roller 13, the upper end portion of the dead bolt 12 is formed in a mountain shape that can enter the opening 60 of the front plate 26. You may do it.
[0028]
In other words, in this embodiment, the operating body for turning on and off the switch in the lock case is a mountain-shaped dead bolt itself, and this dead bolt is latched when the sliding door is fully closed. When the sliding door is opened, the engaging means reverses the latch 4 while the sliding surface passes through the taper surface 54 and enters the opening 60 of the lock case 7 and contacts the movable contact piece 5a of the switch 5. It slides out of the opening 60 and leaves the switch 5. Therefore, in this embodiment, although there is a frictional resistance between members, the object of the present invention can be achieved to some extent.
[0029]
By the way, as shown in FIGS. 8 and 9, a plurality of engaging means including an operation roller for turning on and off the switch may be provided with a required interval on the sliding door side.
[0030]
Thus, in FIG. 8, the first engaging means 3A and the second engaging means 3B that move up and down from the upper surface plate 62 of the support box 11A are provided in a misaligned state, and these engaging means 3A and 3B are provided. Switches 5A and 5B for detecting a fully-closed sliding door signal (particularly for detecting a half-open state and a fully-closed state) housed in the lock case 7A in contact with the lock case 7A are provided as desired in the opening 60A of the lock case 7A.
[0031]
In such a configuration, when the sliding door is fully closed, the operating roller 13A of the first engaging means 3A enters the opening 60A and contacts the movable contact piece 5a of the first switch 5A, and the sliding door is half open. In the state, the operation roller 13B of the second engagement means 3B similarly enters the opening 60A and contacts the movable contact piece 5b of the second switch 5B.
[0032]
Therefore, by using both detection signals composed of a combination of the plurality of engaging means 3A, 3B on the sliding door side and the plurality of switches 5A, 5B built in the lock case 7A, the state of the sliding door (for example, all Closed state, half-open state, etc.).
[0033]
In FIG. 9, the first engaging means 3C and the second engaging means 3D that move up and down from the upper surface plate 62B of the support box 11B are provided on the same line or in a misaligned state with respect to each other. Switches 5C and 5D for detecting a closing signal (particularly for detecting a fully closed state) are provided in the lock case 7B so as to correspond to the positions of the first engaging means 3C and the second engaging means 3D. . In the case of this embodiment, the lock case 7B is formed in a slightly long box shape, and in addition to the opening 60B for the first engaging means 3C, an opening 60C for the second engaging means 3D is also provided. Is provided.
[0034]
Therefore, even in such a configuration, both detection signals comprising a combination of the plurality of engaging means 3C, 3D on the sliding door side and the plurality of switches 5C, 5D housed in the lock case 7B are utilized. Thus, the state of the sliding door (for example, a fully closed state, a half-open state, etc.) can be grasped.
[0035]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) The height dimension of the lock case of the electric lock for sliding doors can be shortened.
(2) The sliding door can detect the open / closed state (particularly the door closed state). Therefore, it is possible to eliminate management problems in nursing homes and hospitals.
(3) The operation member for turning on and off the switch 5 can be simplified (or the number of parts can be reduced).
(4) In the embodiment having a plurality of engaging means, an effective or reliable door closing signal can be taken out in the sliding door electric lock.
(5) The sliding door can be closed smoothly and the contact of the actuating member can be prevented from causing a failure of the switch. However, the invention of claim 5 is excluded.
[Brief description of the drawings]
1 to 7 are explanatory views for explaining the embodiment of the present invention. 8 and 9 are explanatory views showing other embodiments of the main part of the present invention.
FIG. 1 is a schematic explanatory diagram when viewed from the front in a state where a sliding door is completely closed.
FIG. 2 is an exploded perspective view showing a relationship between a lock case on the upper frame side and a support box on the sliding door side.
FIG. 3 is a partial schematic cross-sectional explanatory diagram.
FIG. 4 is an exploded perspective view of a main part (drive source, rotation lock member).
FIG. 5 is a schematic explanatory view of a main part (engagement means) provided in the support box.
FIG. 6 is an explanatory diagram of the action when the sliding door moves in the opening direction A.
FIG. 7 is an explanatory view of the action when the sliding door moves in the fully closed direction B.
FIG. 8 is an explanatory view showing another embodiment of the main part (relationship between a plurality of engaging means and a switch).
FIG. 9 is an explanatory view showing another embodiment of the main portion (a relationship between a plurality of engaging means and a switch).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sliding door, 2 ... Upper rod, 3 ... Engagement means, 4 ... Latch, X ... Locking / unlocking mechanism 5, 5A, 5B, 5C, 5D ... Switch (for sliding door full-closed signal detection), 5a, 5b ... Movable 7, 7 A, 7 B: lock case, 26 ... front plate, 27 ... fixing tool, 28 ... shaft, 11 ... support box, 13 ... actuating roller, 14 ... vertical wall for stopper, 15 ... receiving part, 16 ... Fitting projection, 17 ... support projection, 18 ... spring member, 20 ... manual drive means, 21 ... synchronization arm, 21a ... finger part of synchronization arm, 30 ... drive source, 31 ... actuation rod, 33 ... drive pin, 35 DESCRIPTION OF SYMBOLS ... Rotation lock member, 36 ... Opposite bearing plate, 37 ... Connection plate, 38 ... Notch part, 39 ... Projection part, 41 ... Lock arm part, 42 ... Horizontal roller, 50 ... Latch, 51 ... Vertical contact surface, 52 ... Latch spring, 60, 60A, 60B, 60C ... Opening, 62 ... Top plate, A Opening direction, B ... fully closed direction.

Claims (5)

Engagement means 3 attached to the sliding door 1 side via a spring member 18 so as to be movable up and down, and a locking / unlocking mechanism X including a reversible latch 4 engaged with and disengaged from the engagement means are incorporated, and the door frame side in an electric lock for sliding doors comprising a horizontally provided has been tablet case 7 for a, and laterally disposed drive source 30 so as to face the latch 4 into the lock case 7, also, a drive source 30 of the lock case 7 and interior of the sliding door full closing signal detection switch so as to face the opening 60 of the front plate 26 located between the latch 4, while the said engaging means, oN said switch, the actuator roller to OFF provided, When the sliding door is fully closed, the operating roller slides through the latch, enters the opening and directly contacts the switch, while the engaging means opens the sliding door to reverse the latch. Sometimes it gets out of the opening and out of the switch Sliding door electric lock, characterized in that it is.   In Claim 1, the engaging means includes a case-like dead bolt 12, a working roller 13 pivotally supported by the dead bolt so that a peripheral end portion projects from an upper end opening of the dead bolt 12, and a dead A sliding door electric lock comprising a stopper vertical wall 14 integrally provided at the lower end of the bolt 12 and an arm receiving portion 15 formed at the lower edge of one end of the stopper vertical wall 14. .   The engagement means including an operation roller for turning on and off the sliding door full-closed signal detection switch according to claim 1 is provided in a plurality with a required interval on the sliding door side. Electric lock for sliding doors.   In Claim 1, two engagement means including an operating roller for turning on and off a switch for detecting a sliding door full-close signal are provided in a support box in a misaligned state with each other, while the switch 5C, 5D is an electric lock for sliding doors characterized by being housed in a lock case corresponding to the positions of these engaging means.   The sliding door electric lock according to claim 1, wherein the upper end portion of the dead bolt 12 is formed in a mountain shape that can be inserted into the opening 60 of the front plate 26 in place of the operating roller 13.

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