JP2023092625A - Sliding door locking device - Google Patents

Abstract

To provide a sliding door locking device that can be easily switched between on and off.SOLUTION: A sliding door locking device 1 includes a base 2 attached to a door plate 91 side of a sliding door D, a roller 3 rotatable on a rotating shaft 31 installed on the base 2 and movable in the axial direction of the rotating shaft 31, a plate spring-like catch 4 that is installed on the door frame side of the sliding door D and locks the roller 3 and a retainer 5 that can be fitted to the rotating shaft 31 and holds the roller 3 at the ON position where it engages with the catch 4 or the OFF position where it does not engage with the catch 4.SELECTED DRAWING: Figure 4

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for a sliding door that holds the door plate of the sliding door in an open or closed state.

2. Description of the Related Art Conventionally, in the field of sliding doors, locking devices for sliding doors are known which hold a door leaf in an open or closed state. For example, in Patent Document 1, a pivot (shaft) that can be retracted from the lower end surface of the door plate and is biased in a pulling direction by a spring is provided, and the floor surface facing the door plate gradually becomes deeper in the moving direction of the door plate. A hanging door catch is disclosed having a groove with a magnet at the deepest part of the groove.

JP-A-11-141215

However, conventional locking devices for sliding doors, including that of Patent Document 1, "always" hold the sliding door in either an open or closed state. That is, the conventional locking device for a sliding door cannot easily switch ON/OFF of the locking device.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a locking device for a sliding door that can be easily switched ON/OFF.

In order to achieve the above object, the locking device for a sliding door of the present invention comprises a base attached to the door plate side of the sliding door, and a rotary shaft installed on the base, which is rotatable about and movable in the axial direction of the rotary shaft. a roller, a plate spring-like catch that is installed on the door frame side of the sliding door and locks the roller, and an ON position that can be fitted to the rotating shaft and engages with the catch or a retainer holding said roller in an OFF position out of engagement with said catch.

As described above, the locking device for a sliding door of the present invention includes a base, a roller, a plate spring-like catch, and an ON position or a catch that can be fitted to the rotating shaft of the roller to engage with the catch. a retainer for holding the rollers in an OFF position out of engagement with the rollers. With such a configuration, the locking device for the sliding door can be easily switched ON/OFF by fitting the retainer above or below the roller.

1 is a front view of an entire sliding door (lower half omitted) with a locking device for the sliding door; FIG. It is the top view which expanded the vicinity of the latching device for sliding doors. It is the perspective view which expanded the vicinity of the latching device for sliding doors. It is a perspective view explaining the structure of a base, a roller, and a retainer. FIG. 10 is an action diagram for explaining the action of the locking device for the sliding door in the ON state; (a) is a front view, and (b) is a side view. FIG. 10 is an action diagram for explaining the action of the locking device for the sliding door in the OFF state; (a) is a front view, and (b) is a side view. Fig. 10 is a perspective view of a locking device for a sliding door with a modified base;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the constituent elements described in the following examples are examples, and are not intended to limit the technical scope of the present invention only to them.

(overall structure)
First, the overall construction of a sliding door D provided with a locking device (1) for a sliding door of the present invention will be described with reference to FIG. As shown in FIG. 1, the sliding door D is mainly composed of a door plate 91 closing an opening 90, suspension wheels 93, 93 attached to the upper end of the door plate 91, and a rail 92 on which the suspension wheels 93, 93 run. is configured to That is, the sliding door D of this embodiment is a so-called hanger-type sliding door D in which the door plate 91 is suspended from the rail 92 installed on the door frame side via hanging wheels 93 , 93 .

Furthermore, the sliding door D of this embodiment further has an automatic closing mechanism (not shown) that biases the sliding door D in the closing direction. As the automatic closing mechanism (door closer; sliding door closer), for example, a mechanism in which a wire is wound around a spiral spring housed in a casing can be used.

In the following embodiments, the case where the sliding door D having an automatic closing mechanism is held open will be described as the ON state of the sliding door locking device (1), and the case where the sliding door locking device (1) will not be held open will be described as the OFF state. . However, the present invention can also be applied to a sliding door D that does not have an automatic closing mechanism.

In the sliding door D of this embodiment, the locking device 1 for the sliding door is installed on the right side in the figure near the upper end of the door plate 91 . That is, while the door plate 91 is biased toward the left side in the figure (that is, in the closing direction), in order to restrain the leftward movement of the door plate 91 (movement in the closing direction), the locking mechanism for the sliding door is used. A device 1 is installed.

(locking device for sliding door)
Next, the configuration of the locking device 1 for a sliding door of this embodiment will be described with reference to FIGS. 2 to 5. FIG. As shown in FIGS. 2 and 3, the locking device 1 for a sliding door rotates around a base 2 attached to a suspension wheel 93 above a door plate 91 of a sliding door D and a rotating shaft 31 installed on the base 2. a roller 3 movable in the axial direction of the rotating shaft 31; a plate spring-like catch 4 installed on the door frame side (rail 92 side) of the sliding door D to lock the roller 3; A retainer 5 is fitted to the shaft 31 and retains the roller 3 at an ON position where it engages with the catch 4 or an OFF position where it does not engage with the catch 4 .

That is, the locking device 1 for a sliding door includes a plate spring-like catch 4 as a structure on the door frame side or the rail 92 side; and a base 2 and a roller 3 as a structure on the door plate 91 side; A separate retainer 5 is fitted to the rotating shaft 31 of the roller 3 .

The catch 4 is formed in the shape of a leaf spring by bending an elastic metal plate member into a substantially "F" shape (a shallow V shape). It is fixed so as to protrude on the side (same on the roller 3 side).

More specifically, the catch 4, as shown in FIG. and a second inclined portion 42 . The position of the vertex (turning point) in the width direction (upper and lower positions in FIG. 2) protrudes to the side closer to the rotating shaft 31 of the roller 3 than the point closest to the door frame of the roller portion 30 of the roller 3. there is

Therefore, the roller 3 that has moved to the right side of the vertex is biased leftward and comes into contact with the second inclined portion 42 and is stopped. Therefore, since the door plate 91 integrated with the roller 3 is also stopped at this position, the door plate 91 is held in the open state. However, since the plate spring-shaped catch 4 is elastically deformed, it is possible to close the door plate 91 by holding the door plate 91 and pushing it leftward against the elastic force to cross the top.

On the other hand, the roller 3, which has moved to the left side of the vertex, holds the door plate 91 and moves rightward while resisting the leftward biasing force, and even after coming into contact with the first inclined portion 41, the biasing force is further applied. The state shown in FIG. 2 (holding in the open state) can be achieved by pressing the catch 4 to the right against the elastic force of the catch 4 .

The base 2 is formed of a metal plate member, and as shown in FIG. It is configured. Mounting holes 20 a , 20 b , and 20 a for mounting near the side edge of the sling wheel 93 are formed in the vicinity of one edge of the main body 20 . On the other hand, the bent portion 21 is formed with a screw hole (not shown) for fixing the rotating shaft 31 of the roller 3 with a screw.

A slit 22 is formed adjacent to the position of a screw hole (not shown) for the rotating shaft 31 at the corner formed by the body portion 20 and the bent portion 21 . That is, the slit 22 is formed along a line where a plane passing through the axis of the rotating shaft 31 and the base 2 intersect. Specifically, the slit 22 is formed in an L shape so as to straddle both horizontal bent portions 21 of the vertical body portion 20 . The retainer 5 (the knob portion 52 thereof) is fitted into the slit 22 as will be described later.

The roller 3 is rotatably attached around a rotating shaft 31 attached to the bent portion 21 of the base 2 . That is, since the roller portion 30 of the roller 3 is supported by the rotating shaft 31 via an insert-molded bearing, it rotates smoothly around the rotating shaft 31 . A female screw groove is threaded through the center of the rotary shaft 31 in the axial direction, and the bent portion 21 is fixed with a screw (not shown; 32) from below.

The roller 3 of this embodiment is movable along the axial direction of the rotating shaft 31 . That is, since the length (height) of the roller portion 30 of the roller 3 in the axial direction is shorter (lower) than the length of the rotating shaft 31 in the axial direction, it is possible to change the position along the axial direction of the rotating shaft 31 . is now possible. The retainer 5 is fitted in a region corresponding to the difference between the axial length of the rotating shaft 31 and the axial length of the roller portion 30 .

The retainer 5 is composed of a fitting portion 51 having a C-shaped cross section that can be fitted (detachable or removable) to the rotating shaft 31 of the roller 3, and a knob portion 52 extending from the fitting portion 51. there is Since the fitting portion 51 has a C-shaped cross section, it can be easily fitted to the rotating shaft 31 by grasping it and pushing the split end into the rotating shaft 31 . The knob portion 52 is composed of a flat plate portion and a cylindrical portion, and the flat plate portion is formed with a concave portion 52a for preventing interference with the roller 3. As shown in FIG.

As described above, when the height (length (height) in the axial direction) of the fitting portion 51 of the retainer 5 and the length (height) in the axial direction of the roller portion 30 of the roller 3 are added together, It substantially corresponds to the axial length (height) of the rotating shaft 31 . Then, when the fitting portion 51 of the retainer 5 is fitted under the roller portion 30 of the roller 3, the roller 3 and the catch 4 are in an ON state in which they are in contact with each other. Conversely, when the fitting portion 51 of the retainer 5 is fitted onto the roller portion 30 of the roller 3, the roller 3 and the catch 4 are in an OFF state where they do not come into contact with each other.

(action)
Next, the operation (ON state and OFF state) of the locking device 1 for the sliding door of the present embodiment will be described with reference to FIGS. 5 and 6. FIG. First, the ON state in which the roller 3 and the catch 4 are in contact with each other will be described with reference to FIGS. 5(a) and 5(b). In the locking device 1 for sliding doors in the ON state, the fitting portion 51 of the retainer 5 is fitted under the roller 3 as described above. Then, the roller 3 is positioned above the retainer 5 by the height.

As a result, as shown in FIGS. 5(a) and 5(b), the roller 3 is in a position where it interferes (contacts) with the plate spring-shaped catch 4. As shown in FIG. That is, if the position of the roller 3 is on the right side (in the opening direction) of the vertex of the curved catch 4 , the movement in the closing direction is suppressed by the catch 4 . On the other hand, if the position of the roller 3 is to the left (in the closing direction) of the vertex of the curved catch 4 , the movement in the opening direction is suppressed by the catch 4 . (After this, you can move it to the right side of the top of Catch 4 by pushing it further.)

When changing from the ON state to the OFF state, first, the grip portion 52 of the retainer 5 below the roller 3 is pinched with fingers and pulled out from the rotating shaft 31 (detachable "detachment"). After that, the grip portion 52 of the retainer 5 is pinched with fingers, and the fitting portion 51 is inserted into the rotating shaft 31 . At this time, the retainer 5 is pushed onto the roller 3 to be fitted (detachable "attachment"). In this manner, the ON state/OFF state can be switched extremely simply by simply inserting and removing the retainer 5 .

Next, the OFF state in which the roller 3 and the catch 4 do not contact will be described with reference to FIGS. 6(a) and 6(b). In the locking device 1 for the sliding door in the OFF state, the fitting portion 51 of the retainer 5 is fitted onto the roller 3 as described above. Then, the rollers 3 are positioned downward by the height of the retainer 5 .

As a result, as shown in FIGS. 6A and 6B, the roller 3 is positioned so as not to interfere (contact) with the plate spring-like catch 4 . That is, regardless of the position of the roller 3, the movement of the roller 3 and the door plate 91 is not restricted or suppressed by the catch 4, and the door plate 91 can move freely.

(Modification)
Next, referring to FIG. 7, a locking device (1A) for a sliding door provided with a base 2A having a shape different from that of the embodiment will be described. The locking device (1A) for a sliding door of this modified example is substantially the same as the embodiment in that it includes a base 2A, rollers 3, catches 4, and retainers 5. FIG. In this modification, the shape of the base 2A is different from that of the base 2 of the first embodiment.

Specifically, the base 2A of this modified example differs from the embodiment in that mounting structures for the door plate 91 (the suspension wheel 93 thereof) are formed on both the left and right sides of the rotating shaft 31. . That is, the main body portion 20 of the base 2A of this embodiment is formed in a "Y" shape ("E" shape), and the center piece is bent at a substantially right angle to form a bent portion 21. As shown in FIG. As a result, mounting holes 20a, 20b, and 20a are provided on both sides of the roller 3 as mounting structures. With such a modified configuration, the base 2 and the roller 3 can be attached to either the left or right side of the hanging wheel 93 to configure the locking device 1, 1A for the sliding door.

(effect)
Next, the effects of the locking devices 1 and 1A for sliding doors of the present embodiment will be enumerated and explained.

(1) As described above, the locking device 1, 1A for the sliding door includes the base 2 attached to the side of the door plate 91 of the sliding door D, and the rotating shaft 31 installed on the base 2. A roller 3 movable in the axial direction, a plate spring-like catch 4 installed on the door frame side of the sliding door D to lock the roller 3, and a rotating shaft 31 that can be fitted to the catch. a retainer 5 that holds the roller 3 in an ON position where it engages with the catch 4 or an OFF position where it does not engage with the catch 4 . With such a configuration, by fitting the retainer 5 above or below the roller 3, the locking device 1 for the sliding door can be easily switched ON/OFF.

(2) The retainer 5 has a fitting portion 51 with a C-shaped cross section that fits onto the rotating shaft 31, and a knob portion 52 extending from the fitting portion 51. The base 2 is formed with a slit 22. The retainer 5 is prevented from rotating together with the roller 3 by fitting the knob portion 52 into the slit 22 . With such a configuration, the knob 52 rotates together and does not rotate to the back side, so that it does not interfere with the automatic closing mechanism or the like on the back side. Furthermore, since the knob portion 52 is always positioned on the front side, the ON/OFF switching operation can be easily performed. In addition, by fitting the knob portion 52 into the slit 22, it becomes easy to understand that the retainer 5 is installed at the correct position.

(3) Furthermore, since the knob 52 of the retainer 5 is formed with a concave portion 52a for preventing interference between the roller 3 and the retainer 5 in the ON position, the retainer 5 is fitted above the roller 3. Interference between the rollers 3 and the retainer 5 can be avoided in this state. In particular, when the retainer 5 is formed so that the lower portion of the knob portion 52 is fitted into the slit 22 of the base 2, when the fitting portion 51 is fitted onto the roller 3, the roller 3 and the knob portion 52 are separated. Since it interferes, it is very necessary to form the recessed part 52a in this way.

(4) The base 2 of the modified example has mounting holes 20a, 20b, and 20a as mounting structures for the door plate 91 on both the left and right sides of the rotating shaft 31. It can be attached to both left and right side edges of the vehicle 93 (see also FIG. 3). Therefore, it is easy to apply to both types of the sliding door D which pulls to the right and the sliding door D which pulls to the left.

(5) Furthermore, it is preferable that the sliding door D further has an automatic closing mechanism that is biased in the closing direction. In the case of having such an automatic closing mechanism, if the ON/OFF of the locking device 1 (1A) for the sliding door can be easily switched, the sliding door D can be opened by the locking device 1 for the sliding door. It is possible to extremely easily switch between the case of holding the sliding door D and the case of holding the sliding door D in the closed state by the automatic closing mechanism (turning off the locking device 1 for the sliding door).

Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that they do not depart from the gist of the present invention can be applied to the present invention. included.

For example, in the embodiment, the case of applying the locking device 1 (1A) for the sliding door to the sliding door D having an automatic closing mechanism has been described, but the present invention is not limited to this, and the sliding door without the automatic closing mechanism The present invention can also be applied to D.

D Sliding door 1, 1A Locking device 2 for sliding door Base 20 Main body 20a Mounting hole (mounting structure)
20b mounting hole (mounting structure)
21 Bent portion 22 Slit 3 Roller 30 Roller portion 31 Rotating shaft 4 Catch 41 First inclined portion 42 Second inclined portion 5 Retainer 51 Fitting portion 52 Knob portion 52a Recess 90 Opening 91 Door plate 92 Rail 93 Suspension wheel

Claims (5)

A base attached to the door plate side of the sliding door,
a roller rotatable on a rotating shaft installed on the base and movable in an axial direction of the rotating shaft;
a plate spring-like catch that is installed on the door frame side of the sliding door and locks the roller;
a retainer that can be fitted to the rotating shaft and holds the roller in an ON position where it engages with the catch or an OFF position where it does not engage with the catch;
A locking device for a sliding door, comprising: The retainer has a fitting portion with a C-shaped cross section that fits onto the rotating shaft, and a knob portion extending from the fitting portion. 2. A locking device for a sliding door according to claim 1, wherein said retainer is fitted in said slit so that said retainer does not co-rotate with said roller. 3. The locking device for a sliding door according to claim 1, wherein the knob portion of the retainer is formed with a recess for preventing interference between the roller and the retainer in the ON position. The locking device for a sliding door according to any one of claims 1 to 3, wherein mounting structures for the door plate are formed on both left and right sides of the base on both sides of the rotating shaft. 5. A locking device for a sliding door according to any one of claims 1 to 4, wherein the sliding door further comprises an automatic closing mechanism biased in the closing direction.

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