Locking device for sliding doors
The sliding door locking device addresses the limitations of one-sided operation and installation by enabling dual-sided unlocking and easy removal, maintaining door integrity and functionality.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2026-05-18
AI Technical Summary
Existing sliding door locking devices require an opening in the door for installation, are limited to one-sided operation, and cannot be easily removed when no longer needed.
A locking device for sliding doors with one-side and other-side operating parts connected by an interlocking mechanism, allowing unlocking from both sides and removable without door modifications.
The device can be unlocked from both sides of the door and easily removed, preventing damage to the door surface and ensuring reliable operation without requiring door openings.
Smart Images
Figure 2026080777000001_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a locking device for a sliding door, for example, for locking a sliding door.
Background Art
[0002] Sliding doors installed in a building may be equipped with, for example, a key or a locking device for locking the closed sliding door in order to prevent children from entering or leaving a specific room.
[0003] For example, Patent Document 1 discloses a locking device for a sliding door in which a hook is provided on the sliding door and a striker for locking the hook is provided on the door frame. This locking device for a sliding door is configured to fit a case containing a hook into an opening formed in the sliding door, and the case is provided with an operation knob portion that protrudes in one direction of the opening and closing direction of the sliding door. By operating this operation knob portion, it is possible to lock or unlock the striker and the hook.
[0004] [[ID=2"1]] By the way, some sliding doors are not equipped with a locking key, and it may be necessary to attach a locking key or a locking device as needed. In this case, in the locking device for a sliding door of Patent Document 1, since it is necessary to form an opening in the sliding door, for example, it could not be removed when the original state had to be restored due to the end of the lease contract or when it became unnecessary due to the growth of children. Furthermore, since this locking device for a sliding door can only be operated from one side in the opening and closing direction where the operation knob portion protrudes, it was not possible to lock or unlock from the other side in the opening and closing direction.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0006] In view of the above-mentioned problems, this invention aims to provide a locking device for sliding doors that can be unlocked from both sides in the direction of entry and exit of the sliding door and can be easily removed. [Means for solving the problem]
[0007] This invention relates to a locking device for a sliding door that slides relative to a door frame, comprising: a locking part for locking the sliding door; a one-side operating part attached to one side of the main surface of the sliding door for performing an unlocking operation of the locking part; a other-side operating part attached to the other side of the main surface of the sliding door for performing an unlocking operation of the locking part; and an operation interlocking part that interlocks the unlocking operations of the one-side operating part and the other-side operating part, wherein the locking part comprises a sliding door-side locking part attached to the sliding door and a door frame-side locking part attached to the door frame and cooperating with the sliding door-side locking part to lock the sliding door, and the sliding door-side locking part is provided on at least one of the one-side operating part and the other-side operating part.
[0008] The above-mentioned locking mechanism only needs to be able to restrict the sliding of the sliding door when it is closed, and includes configurations such as locking the sliding door-side locking mechanism and the door frame-side locking mechanism, fitting mechanisms, and magnetic fixation mechanisms.
[0009] The unlocking operation described above includes not only an operation to move a portion of the one-sided operating section and the other-sided operating section relative to the sliding door, but also an operation to move the entire one-sided operating section and the other-sided operating section relative to the sliding door.
[0010] The above-mentioned operation interlocking unit may be configured to directly connect and interlock the one-side operation unit and the other-side operation unit, or it may be configured to connect and interlock them indirectly. In the case of direct connection, the above-mentioned interlocking mechanism only needs to connect the one-sided operating mechanism and the other-sided operating mechanism across the edge of the sliding door, and may be composed of a columnar member or a wire-like member. Furthermore, when connected indirectly, the above-mentioned operation interlocking unit may interlock the unlocking operations of the one-side operation unit and the other-side operation unit by magnetic force.
[0011] According to this invention, the sliding door can be unlocked from both sides in the direction of entry and exit, and can also be easily removed. More specifically, in a sliding door locking device, the unlocking operation of one operating part, which is attached to one side of the sliding door in the direction of opening and closing, and the unlocking operation of the other operating part, which is attached to the other side of the sliding door in the direction of opening and closing, are linked by an operating interlocking mechanism.
[0012] Therefore, by performing an unlocking operation on either the operating unit on one side or the operating unit on the other side, the sliding door side locking unit and the door frame side locking unit, which are provided on at least one of the operating units on the one side or the other side, can be unlocked. This allows the locking mechanism for sliding doors to be unlocked from both sides of the sliding door's opening and closing direction.
[0013] In addition, the locking device for sliding doors can be easily removed, for example, when restoring the door to its original condition upon termination of a lease agreement, or when it becomes unnecessary as the child grows up, because the operating parts on one side and the other side are attached without requiring any processing to the sliding door, such as creating an opening. Therefore, the locking device for sliding doors can be unlocked from both sides of the sliding door's opening and closing direction, and can also be easily removed.
[0014] In an embodiment of this invention, the one-side operating unit comprises a one-side fixed portion fixed to one side of the main surface of the sliding door and a one-side movable portion movably attached to the one-side fixed portion, the other-side operating unit comprises a other-side fixed portion fixed to the other side of the main surface of the sliding door and a other-side movable portion movably attached to the other-side fixed portion, the sliding door side locking unit is provided on at least one of the one-side movable portion and the other-side movable portion, the operation interlocking unit has one end attached to the one-side movable portion and the other end attached to the other-side movable portion, and is provided with an edge-crossing portion that straddles the edge on the door-side side of the sliding door, and the movement of the one-side movable portion and the other-side movable portion may be interlocked.
[0015] The term "movable" as described above is not particularly limited as long as the movable part on one side or the movable part on the other side can move relative to the fixed part on one side or the fixed part on the other side, and includes, for example, being mounted pivotally or slidably.
[0016] With this configuration, the locking mechanism for sliding doors is unlocked by moving the movable part on one side and the movable part on the other side, which are movably attached to the fixed part on one side and the fixed part on the other side. Therefore, interference between the movable part on one side and the movable part on the other side and the sliding door can be suppressed by the movement caused by the unlocking operation. This prevents the main surface of the sliding door from being damaged by the movable parts on one and the other sides of the sliding door locking device.
[0017] Furthermore, since the interlocking mechanism is provided with an edge-stretching portion, for example, one movable part and the other movable part can be directly connected by the interlocking mechanism without forming a through hole in the sliding door in the thickness direction, thereby ensuring reliable interlocking between the two movable parts. Therefore, the locking device for sliding doors can prevent marks from being left on the main surface of the sliding door when it is removed from the door, and can be reliably unlocked from both sides in the direction of entry and exit of the sliding door.
[0018] Also, as an aspect of the present invention, the one-side movable part may be pivotally attached to the one-side fixed part, the other-side movable part may be pivotally attached to the other-side fixed part, and the operation interlocking part may interlock the pivoting of the one-side movable part and the other-side movable part. According to this configuration, by pivoting the one-side movable part and the other-side movable part, the unlocking of the locking part can be easily performed, and the workability of the unlocking operation can be improved.
[0019] Also, as an aspect of the present invention, a covering part covering the edge straddling part may be provided. According to this configuration, when the sliding door is closed, it is possible to prevent the edge straddling part and the door frame from directly hitting each other and prevent damage to the edge straddling part, so it is possible to prevent the interlocking between the one-side movable part and the other-side movable part from being released.
[0020] Also, as an aspect of the present invention, the locking part may be configured such that when the sliding door is closed, the sliding door side locking part and the door frame side locking part are brought close to each other and locked. According to this configuration, since the sliding door side locking part and the door frame side locking part can be locked only by closing the sliding door, it is possible to prevent forgetting to lock the sliding door.
[0021] Also, as an aspect of the present invention, a locking regulation means for regulating the locking of the sliding door side locking part and the door frame side locking part by closing the sliding door may be provided. According to this configuration, by closing the sliding door, it is possible to switch between a state where the sliding door side locking part and the door frame side locking part are locked and a state where the locking of the sliding door side locking part and the door frame side locking part is regulated. Therefore, the locking device for the sliding door can not only prevent forgetting to lock the sliding door, but also, for example, when the sliding door is frequently opened and closed, it is possible to reduce the trouble of unlocking each time.
Advantages of the Invention
[0022] This invention provides a locking device for sliding doors that can be unlocked from both sides of the sliding door's entry and exit direction and can be easily removed. [Brief explanation of the drawing]
[0023] [Figure 1] An explanatory diagram showing the door frame and sliding door with the sliding door locking device attached. [Figure 2] Diagram illustrating the locking mechanism on the door frame side. [Figure 3] Diagram illustrating the locking mechanism. [Figure 4] Exploded perspective view of the locking mechanism on the sliding door side. [Figure 5] Diagram illustrating the mounting section on the sliding door side. [Figure 6] Deconstructed perspective view of the pivot section. [Figure 7] Diagram illustrating the pivot mechanism. [Figure 8] Diagram illustrating the pivot body and pivot switching section. [Figure 9] Exploded perspective view of the pivot support section. [Figure 10] An explanatory diagram illustrating the assembly method of the sliding door unit. [Figure 11] An explanatory diagram illustrating the pivot mechanism of the pivot part in the sliding door body. [Figure 12] Diagram illustrating the locking mechanism. [Figure 13] An explanatory diagram showing how to install a locking device for sliding doors. [Figure 14] An explanatory diagram on how to lock a sliding door. [Figure 15] Perspective view of the locking mechanism on the sliding door side in another example. [Modes for carrying out the invention]
[0024] One embodiment of this invention will be described in detail below with reference to Figures 1 to 12. Figure 1 shows an explanatory diagram of the state in which the sliding door locking device 1 is attached to the door frame 100 and the sliding door 200. More specifically, Figure 1(a) shows a schematic perspective view of the state in which the sliding door 200 is closed and locked by the sliding door locking device 1, and Figure 1(b) shows a schematic perspective view of the state in which the sliding door 200 is open. In Figure 1(b), the sliding door 200 is shown with a dashed line.
[0025] Furthermore, Figure 2 shows an explanatory diagram of the door frame side locking body 10, and Figure 3 shows an explanatory diagram of the locking part body 11. To elaborate on Figures 2 and 3, Figure 2(a) shows a perspective view of the door frame side locking body 10, Figure 2(b) shows an exploded perspective view of the door frame side locking body 10, Figure 3(a) shows a front view of the locking part body 11, and Figure 3(b) shows a vertical cross-section of the locking part body 11 at the center in the direction of entry and exit.
[0026] Furthermore, Figure 4 shows an exploded perspective view of the sliding door side locking body 20, Figure 5 shows an explanatory diagram of the sliding door side mounting part 50, Figure 6 shows an exploded perspective view of the pivot part 60, Figure 7 shows an explanatory diagram of the pivot body 80, Figure 8 shows an explanatory diagram of the pivot body 80 and the pivot switching part 90, Figure 9 shows an exploded perspective view of the pivot support part 70, and Figure 10 shows an explanatory diagram illustrating the assembly method of the front sliding door side body 30.
[0027] To elaborate on Figures 5, 7, 8, and 10, Figure 5(a) shows a plan view of the sliding door mounting section 50, Figure 5(b) shows a front view of the sliding door mounting section 50, and Figure 5(c) shows a side view of the sliding door mounting section 50 as seen from the door edge side.
[0028] Furthermore, Figure 7(a) shows a perspective view of the pivot body 80, Figure 7(b) shows a front view of the pivot body 80, Figure 7(c) shows a rear view of the pivot body 80, Figure 7(d) shows a cross-sectional view taken along the AA line in Figure 7(c), Figure 7(e) shows an enlarged view of section α in Figure 7(d), and Figure 7(f) shows an enlarged view of section β in Figure 7(d).
[0029] Furthermore, Figure 8(a) shows a cross-sectional view of the pivot body 80 with the pivot switching unit 90 attached, viewed from the direction of arrow AA in Figure 7(c); Figure 8(b) shows an enlarged view of part γ in Figure 8(a); Figure 8(c) shows an enlarged view of part δ in Figure 8(a); Figure 8(d) shows a cross-sectional view of the direction of arrow AA in Figure 7(c) with the switching operation unit 913 of the pivot switching unit 90 pivoted toward the door tail side; and Figure 8(e) shows an enlarged view of part ε in Figure 8(d).
[0030] Figure 10(a) shows an exploded perspective view of the state in which the support body 72 is attached to the sliding door side mounting part 50, and Figure 10(b) shows an exploded perspective view of the state in which the pivot body 80 with the collar part 74 attached is attached to the sliding door side mounting part 50 with the support body 72 attached.
[0031] Furthermore, Figure 11 is an explanatory diagram illustrating the pivoting mechanism of the pivot part 60 in the sliding door side body 30. Specifically, Figure 11(a) shows a perspective view of the pivot part 60 attached to the sliding door side mounting part 50, Figure 11(b) shows a perspective view of the pivot part 60 pivoted upward relative to the sliding door side mounting part 50, Figure 11(c) shows a perspective view of the pivot part 60 pivoted upward, with the downward pivoting of the pivot part 60 restricted by the pivot switching part 90, and Figure 11(d) shows a cross-sectional view perpendicular to the in-and-out direction at a position corresponding to the insertion hole 822 of the pivot body 80 constituting the pivot part 60 in Figure 11(c). In Figures 11(a) to 11(c), the external shape of the pivot body 80 is shown with a dashed line, and the internal structure is illustrated.
[0032] Furthermore, Figure 12 shows an explanatory diagram of the sliding door side locking body 20. More specifically, Figure 12(a) shows an exploded perspective view of the sliding door side locking body 20 with a pair of sliding door side bodies 30 attached to the sliding door 200, Figure 12(b) shows an exploded perspective view of the sliding door side locking body 20 with the rod-shaped body 41 of the body connecting part 40 attached to the pair of sliding door side bodies 30 attached to the sliding door 200, Figure 12(c) shows a perspective view of the sliding door side locking body 20 attached to the sliding door 200, and Figure 12(d) shows a perspective view of the sliding door side locking body 20 with the pivot part 60 pivoted. In Figure 12, the sliding door 200 is shown with a dashed line.
[0033] Furthermore, Figure 13 shows an explanatory diagram illustrating how to install the sliding door locking device 1. More specifically, Figure 13(a) shows a perspective view of the mounting jig 300, which is used when installing the sliding door locking device 1, and Figure 13(b) shows a schematic cross-sectional view of the position corresponding to Figure 3(b) when the sliding door locking device 1 is installed using the mounting jig 300.
[0034] Furthermore, in the diagram, arrows U and D indicate the vertical direction of the door frame 100 and the sliding door 200, with arrow U indicating the upper side and arrow D indicating the lower side. Furthermore, arrows Fs and Rs indicate the direction of entry and exit for the door frame 100 and the sliding door 200, i.e., the thickness direction of the sliding door 200, with arrow Fs indicating the front side and arrow Rs indicating the back side.
[0035] Furthermore, arrows Rh and Lh indicate the sliding direction in which the sliding door 200 slides relative to the door frame 100, with arrow Rh indicating the leading edge and arrow Lh indicating the trailing edge.
[0036] First, as shown in Figure 1, the sliding door locking device 1 in this embodiment is an add-on locking device for locking a sliding door 200 that slides relative to a door frame 100. As shown in Figure 1(b), this sliding door 200 can be opened by sliding it towards the tail end.
[0037] As shown in Figure 1(a), the sliding door locking device 1 consists of a door frame-side locking body 10 that is attached to the door frame 100, and a sliding door-side locking body 20 that is attached to the sliding door 200 and locks by engaging with the door frame-side locking body 10.
[0038] The door frame side locking body 10 and the sliding door side locking body 20 are installed above the handle 201 of the sliding door 200. The door frame side locking body 10 is installed in front of the sliding door 200. The door frame side locking body 10 and the sliding door side locking body 20 are fixed to the door frame 100 or sliding door 200 with double-sided tape T (see Figures 1(b) and 14).
[0039] As shown in Figure 2(a), the door frame side locking body 10 is formed to protrude from the vertical frame of the door frame 100 toward the door edge. As shown in Figure 2(b), the door frame side locking body 10 consists of a locking part body 11 that protrudes in a roughly hook shape toward the door edge side to lock the sliding door side locking body 20, and a locking cover part 12 that covers the locking part body 11 from the door edge side.
[0040] As shown in Figure 3(a), the locking part body 11 consists of a substantially flat locking plate portion 111 whose back surface is attached to the frame of the door frame 100, and a locking piece portion 112 that protrudes from the surface of the locking plate portion 111.
[0041] As shown in Figure 3(b), the locking plate portion 111 is formed in a substantially flat shape with a substantially rectangular main surface having a longer side in the vertical direction, and a recess for attaching double-sided tape T is provided on the back surface facing the vertical frame of the door frame 100.
[0042] Furthermore, the upper and lower ends of the locking plate portion 111 are provided with locking recesses 113 that are recessed inward in the vertical direction, for locking the locking cover portion 12. As shown in Figure 3(b), the locking plate portion 111 has through holes with a circular cross-sectional shape that penetrate along the thickness of the plate, near the upper and lower ends.
[0043] As shown in Figure 3(a), the locking piece 112 consists of a thin, flat locking base 114 fixed to the surface of the locking plate 111 and a locking body 115 protruding from the locking base 114. The locking base 114 is a flat plate having a main surface that is substantially similar in shape to the main surface of the locking plate portion 111, and is about half the size of the locking plate portion 111.
[0044] The locking body 115 is erected from below the vertical center of the locking base 114 toward the door tail end, and is formed in a hook shape with its tip protruding upward. As shown in Figure 3(b), the locking body 115 consists of a hollow, roughly rectangular prism-shaped locking upright portion 116 that stands upright along the sliding direction, and a locking claw portion 117 that protrudes upward from the tip of the locking upright portion 116.
[0045] The lower end surface of the locking mounting portion 116 is located slightly above the lower end of the locking base portion 114, and the upper end surface is located below the vertical center of the locking base portion 114. As shown in Figure 3(b), a through hole 116a is formed on the lower surface of the locking mounting portion 116, penetrating vertically and connecting the internal space of the locking mounting portion 116 with the outside. Furthermore, the locking mounting portion 116 is inclined so that the lower end of the door moves upward towards the door end.
[0046] As shown in Figure 3(a), the locking claw portion 117 is a protruding piece that projects upward from the locking upright portion 116, which is formed in a roughly triangular shape when viewed from the front, and its upper end is located slightly above the vertical center of the locking base portion 114.
[0047] The locking claw portion 117 is formed in a planar shape on the door edge side, facing the locking base portion 114, and is inclined so that it moves towards the door edge as it goes upwards. The inclined surface on the door edge side of the locking claw portion 117 is a tapered surface 117a.
[0048] The locking plate portion 111 and the locking piece portion 112 are configured in this way, with the locking base portion 114 of the locking piece portion 112 fixed to the surface of the locking plate portion 111 so as to be substantially symmetrical in the in-and-out direction and in the vertical direction, thereby constituting the locking portion body 11.
[0049] As shown in Figure 2, the locking cover portion 12 consists of a flat plate-shaped cover portion body 121 having a rectangular main surface, a cover edge portion 122 erected from the outer peripheral edge of the cover portion body 121 toward the door edge, and a cover extension portion 123 extending from the front edge of the cover portion body 121 toward the door edge.
[0050] As shown in Figure 2(b), the cover body 121 is a flat plate having a circumferential surface that is slightly larger than the main surface of the locking plate 111, and has a rectangular through-hole 124 that penetrates through the plate along its thickness. This cover through-hole 124 is located approximately in the center of the cover body 121 and is formed in a shape corresponding to the locking base 114 of the locking body 11 (see Figure 2(a)).
[0051] As shown in Figure 2(b), the cover edge portion 122 is frame-shaped and fits onto the locking plate portion 111. The upper and lower ends are provided with locking projections 125 that protrude so as to be able to lock into locking recesses 113 provided on the locking plate portion 111.
[0052] As shown in Figure 2(a), the cover extension 123 is a plate-like body having a main surface perpendicular to the direction of entry and exit, and its edge on the door-side is chamfered in a roughly arc shape when viewed from the front. This cover extension 123 is formed in a shape corresponding to the locking body 115.
[0053] As shown in Figure 2, the locking body 11 and locking cover 12 are assembled by inserting the locking piece 112 of the locking body 11 into the cover through hole 124 provided in the locking cover 12, and locking the locking projection 125 of the locking cover 12 into the locking recess 113 of the locking body 11.
[0054] The door frame side locking body 10 is constructed by assembling the locking body 11 and the locking cover 12 in this manner. The door frame-side locking body 10 has a cover extension 123 that corresponds to the locking body 115, thus protecting the locking body 115 from the front (see Figure 2(a)).
[0055] On the other hand, as shown in Figure 4, the sliding door locking body 20 consists of a pair of sliding door-side bodies 30 that are attached to the sliding door 200 by sandwiching it in the thickness direction, and a body connecting part 40 that connects the pair of sliding door-side bodies 30. The pair of sliding door side bodies 30 are configured to be approximately symmetrical in the direction of entry and exit with the sliding door 200 in between (see Figure 1(b)). In the following description, we will focus on the sliding door side body 30 that is attached to the front side of the sliding door 200.
[0056] As shown in Figure 4, the sliding door side body 30 consists of a sliding door side mounting portion 50 fixed to the main surface of the sliding door 200 with double-sided tape T, a pivot portion 60 pivotally attached to the sliding door side mounting portion 50, and a pivot support portion 70 that pivotally supports the pivot portion 60 with respect to the sliding door side mounting portion 50.
[0057] As shown in Figure 5(a), the sliding door mounting portion 50 is formed in the shape of a roughly L-shaped plate in a horizontal plan view. This sliding door mounting portion 50 consists of a thin, flat mounting plate portion 51 that follows the main surface of the sliding door 200, and a thin, flat mounting extension portion 52 that extends from the door-side end of the mounting plate portion 51 toward the rear along the edge of the sliding door 200.
[0058] As shown in Figure 5(b), the mounting plate portion 51 is a plate that is roughly rectangular in front view, with its longer side in the sliding direction, and a predetermined range from the door-front end toward the door-back end is slightly thinner. On the rear side of the mounting plate portion 51, that is, on the back surface of the mounting plate portion 51, a main groove portion 511 is formed, which is a groove for attaching double-sided tape T to fix it to the sliding door 200 (see Figure 4).
[0059] Furthermore, on the front main surface of the mounting plate portion 51, that is, the surface of the mounting plate portion 51, a pivot mounting portion 512 is provided on the door edge side for attaching the pivot portion 60, as shown in Figures 5(a) and 5(b). In addition, on the surface of the mounting plate portion 51, three plate-shaped upright portions 513 are provided, which are plate-shaped and erect toward the front, on the door edge side of the pivot mounting portion 512. Furthermore, on the door edge side of the surface of the mounting plate portion 51, a fan-shaped groove portion 514 is formed, which is recessed in a fan shape when viewed from the front.
[0060] The main body groove 511 is a roughly rectangular groove in front view, with its longer side in the sliding direction, and is formed in two locations at a predetermined distance apart in the vertical direction (see Figure 4). The pair of main body grooves 511 are spaced slightly wider than one-third of the vertical length of the mounting plate 51.
[0061] As shown in Figure 5(b), the pivot mounting portion 512 is provided on the door-side side of the center of the mounting plate portion 51 in the sliding direction. The pivot mounting portion 512 consists of a mounting through hole 515, which is a roughly rectangular through hole in a front view that penetrates the mounting plate portion 51 along the thickness of the plate, and a pair of mounting locking portions 516 that are erected on the front side from both the upper and lower edges of the mounting through hole 515.
[0062] The mounting through-hole 515 is formed in the center in the vertical direction at a predetermined distance from the edge on the door side toward the door edge, and the door side is chamfered in an arc shape. The mounting through-hole 515 is formed at a position corresponding to the vertical space between the pair of main body grooves 511 (see Figure 4).
[0063] As shown in Figure 5(c), the mounting locking portion 516 consists of a pair of mounting protrusions 516a that protrude from the edge of the mounting through hole 515, and mounting extensions 516b that extend toward the mating side from the respective tips of the pair of mounting protrusions 516a.
[0064] The pair of mounting protrusions 516a are flat plates that are roughly rectangular in plan view and have main surfaces facing each other in the vertical direction. Furthermore, the mounting extension portion 516b extends from a pair of mounting protrusions 516a such that a gap is created in the vertical direction. The gap between the pair of mounting extension portions 516b is such that the support protrusion 722 of the pivot support portion 70, which will be described later, can be inserted through it.
[0065] As shown in Figure 5(b), the three plate-shaped upright sections 513 consist of a central upright section 517 located approximately in the center in the vertical direction of the mounting plate section 51 in the sliding direction, an upper upright section 518 located above the central upright section 517, and a door-edge side upright section 519 located closer to the door edge than the upper upright section 518. As shown in Figure 5(a), the central upright plate 517 is formed in the shape of a flat plate with a roughly rectangular shape in plan view, and its front end is located in front of the pivot mounting portion 512.
[0066] The upper upright plate 518 is a plate-like structure with a roughly rectangular shape in plan view, located above the central upright plate 517 and slightly below the upper end of the pivot mounting portion 512 (see Figure 5(b)). This upper upright plate 518 is formed as a flat plate with a width narrower than that of the central upright plate 517 along the sliding direction, and its front end is located at approximately the same position as the pivot mounting portion 512 and the front edge. The door-side upright plate 519 is a roughly rectangular plate in plan view, located slightly above the central upright plate 517, with its front end positioned further back than the front edge of the pivot mounting portion 512.
[0067] As shown in Figure 5(b), the fan-shaped groove 514 is formed in a front view, widening upward from the lower edge that extends toward the tail end of the door along the sliding direction, at the door-side end of the mounting plate 51. The center of the fan-shaped groove 514 is located approximately in the vertical center of the door-side end of the mounting plate 51. Furthermore, the upper edge of the fan-shaped groove 514 is inclined at approximately 35 degrees relative to the lower edge.
[0068] As shown in Figure 5(c), the mounting extension portion 52 is a pair of flat plates that extend from the upper and lower sides of the mounting plate portion 51 toward the rear. As will be described later, the mounting extension portion 52 of the front sliding door mounting portion 50 is configured to fit in a concave-concave-concave manner with the mounting extension portion 52 of the rear sliding door mounting portion 50 (see Figure 12).
[0069] Of the pair of mounting extensions 52, the upper mounting extension 52 is formed in an inverted concave shape with a recess on the rear side, and the lower mounting extension 52 is formed in an inverted convex shape that protrudes on the rear side. Specifically, the upper mounting extension 52 has a mounting extension recess 521 formed in the center in the vertical direction, which is rectangular in shape when viewed from the side. The lower mounting extension 52 has a mounting extension projection 522 that protrudes in the center in the vertical direction, which is rectangular in shape when viewed from the side. The vertical length and the length in the inward / outward direction of the mounting extension recess 521 are set to be slightly longer than the vertical length and the length in the inward / outward direction of the mounting extension projection 522.
[0070] The upper mounting extension 52 and the lower mounting extension 52 formed in this manner are arranged at a predetermined distance apart in the vertical direction. A gap is formed in the central part in the vertical direction, into which the rod-shaped straddling portion 412 of the rod-shaped body 41 that constitutes the main body connecting portion 40, which will be described later, can be positioned. Furthermore, each of the pair of mounting extensions 52 has an arc-shaped notch 523 formed on the door-side of the outer edge in the vertical direction. In addition, each of the pair of mounting extensions 52 has a circular through hole formed approximately in the center, which penetrates in the direction of the plate thickness.
[0071] As described above, the pivot part 60 attached to the front sliding door mounting part 50 is composed of a box-shaped pivot body 80 that covers the pivot mounting part 512 and the three plate-shaped upright parts 513 from the front, and a pivot switching part 90 that is installed inside the pivot body 80 and switches between a state in which the pivot part 60 is allowed to pivot relative to the sliding door mounting part 50 and a state in which the pivot is restricted.
[0072] As shown in Figure 7(a), the pivot body 80 is composed of a flat pivot plate portion 81 having thickness in the inward and outward direction, a pivot wall portion 82 extending inward from the outer circumference of the pivot plate portion 81, and a switching mounting portion 83 that receives the pivot switching portion 90 in the internal space of the pivot body 80.
[0073] As shown in Figure 7(b), the pivot plate portion 81 is a plate that is long in the sliding direction and is roughly rectangular in front view, with the edge on the door-end side being chamfered in a semi-circular shape in front view. On the door-side of the pivot plate portion 81, there is a circular recess 811 that is slightly smaller than the chamfered portion on the door-side and has a circular shape when viewed from the front.
[0074] The circular recess 811 is located approximately concentrically with the chamfered portion on the door-end side of the pivot plate 81 when viewed from the front. A circular through-hole 812 is formed slightly towards the door-end side from the center, extending through the plate along its thickness when viewed from the front. The pivot body 80 is also provided with a circular lid portion 813, which is a lid-like body with a circular shape when viewed from the front, and is fitted into and fixed to the circular recess portion 811 (see Figure 6).
[0075] Furthermore, as shown in Figures 7(c) and 7(d), the pivot plate portion 81 has an opening 814 that is rectangular in shape when viewed from the front, located on the door edge side of the center in the sliding direction and above the center in the vertical direction, exposing a part of the pivot switching portion 90 to the front (see Figure 4).
[0076] Furthermore, the inner edge of the opening 814 is chamfered in an arc shape. An arc-shaped groove is formed on the edge of the opening 814, as shown in Figures 7(e) and 7(f). Of the arc-shaped grooves on the edge of the opening 814, the groove on the door-side edge is designated as arc groove 814a, and the groove on the door-side edge is designated as arc groove 814b.
[0077] Furthermore, as shown in Figure 7(d), the pivot plate portion 81 has a pivot extension portion 815 that extends from the edge on the door side of the opening 814 toward the rear. In a plan view, this pivot extension portion 815 is a flat plate shape with an arc-shaped recess on the door side and is formed in a claw shape that extends toward the rear. As shown in Figure 7(e), an arc-shaped notch portion 815a is formed at the tip of the pivot extension portion 815.
[0078] As shown in Figure 7(a), the pivot wall portion 82 is a wall portion that extends from almost the entire circumference of the pivot plate portion 81 to a length greater than the length along the inward and outward direction of the central upright plate 517. The pivot wall portion 82 has a pivot locking portion 821, which is a groove for locking the locking body 11 of the door frame side locking body 10, and an insertion hole 822 that allows the sliding door side projection 304 of the mounting jig 300, which will be described later, to pass through.
[0079] Furthermore, the pivot wall portion 82 has a recessed portion 823 on the door-side surface that is recessed toward the door-end side, approximately in the center of the vertical direction on the door-side surface. Furthermore, as shown in Figure 7(c), a pivot projection plate 824 is provided on the lower surface of the pivot wall portion 82, projecting upward and toward the door tail end.
[0080] The pivot locking portion 821 consists of a locking groove 825 that is recessed upward at a position slightly away from the leading edge of the door towards the tail end, and a locking guide portion 826 that is located on the leading edge side of the locking groove 825 and is inclined upward as it approaches the leading edge.
[0081] The locking groove 825 has a tapered surface 825a that slopes upward from the door edge towards the door leading edge, and the door leading edge is configured to be flat along the vertical direction. The locking guide portion 826 corresponds to the tapered surface 117a of the locking claw portion 117. The insertion hole 822 is formed in the center of the entry / exit direction and on the door-side side of the pivot locking portion 821.
[0082] As shown in Figure 7(c), the recess 823 on the door edge side is formed as a groove that is recessed in a roughly rectangular shape when viewed from the rear toward the door tail end, and has an upper surface and a lower surface that face each other at a predetermined distance apart in the vertical direction.
[0083] This door-side recess 823 is configured such that the rear end of the lower surface is located closer to the front than the rear end of the upper surface (see Figure 7(a)). Furthermore, the pivot wall portion 82 on which the door-edge recess 823 is formed is located so that the area below the door-edge recess 823 is closer to the front than the area above the door-edge recess 823.
[0084] Furthermore, as shown in Figures 7(a) and 7(c), the lower surface of the recess 823 on the door edge side is sloped toward the door edge side as it moves upward, and is formed in a shape that guides the rod-shaped mounting portion 411 of the rod-shaped body 41, which will be described later.
[0085] The pivot projection plate portion 824 is formed as a flat plate that slopes upward from a position slightly closer to the door edge than the insertion hole 822, so that it is positioned closer to the door edge as it moves upward. As described later, this pivot projection plate portion 824 is provided at a position and angle corresponding to the central upright plate 517 when the pivot portion 60 pivots upward relative to the sliding door mounting portion 50 (see Figure 11(d)).
[0086] As shown in Figures 7(c) and 7(d), the switching mounting section 83 is composed of a flat mounting extension 831 that extends from the upper surface of the door edge recess 823 to below the opening 814 of the pivot plate section 81, and a cylindrical mounting section 832 that connects the mounting extension 831 to the upper surface of the pivot wall section 82. In a front view, the cylindrical mounting portion 832 is located at a position corresponding to the center in the sliding direction of the opening 814 of the pivot plate portion 81.
[0087] As shown in Figure 6, the pivot switching unit 90 consists of a flat switching body 91 which is roughly rectangular in plan view, and a claw-shaped switching claw portion 92 which protrudes from the front edge of the switching body 91 toward the door edge.
[0088] The switching body 91 is a flat plate having a thickness in the vertical direction that allows it to pass through the opening 814 of the pivot plate portion 81. The switching body 91 has a projection 911 on the edge on the door-end side and front side that fits into an arc groove 814a or arc groove 814b provided on the edge of the opening 814 of the pivot plate portion 81. The part of the switching body 91 that is behind the projection 911 is formed in a constricted shape so as to be recessed inward in the vertical direction (see Figure 11).
[0089] The switching body 91 is provided with a switching outer fitting part 912 on the rear side that fits onto the cylindrical mounting part 832, and a switching operation part 913 on the front side that is exposed to the outside through the opening 814 and is used to operate the pivot switching part 90. The switching operation section 913 is provided on the door-edge and front side of the switching body 91 and is a projection that is approximately semicircular in plan view and protrudes toward the front.
[0090] The switching claw portion 92 is a linearly extending projection, and is provided with a projection 921 that fits into an arc notch 815a formed in the pivot extension portion 815 or an arc groove 814a of the opening 814. As shown in Figure 8, the pivot switching unit 90 configured in this way has a switching outer fitting 912 attached to the cylindrical mounting portion 832 of the pivot body 80, and the pivot body 80 and the pivot unit 60 are formed together.
[0091] In this configuration, the pivot section 60 pivots with the cylindrical mounting section 832 as the pivot axis, and the pivot switching section 90 pivots with the cylindrical mounting section 832 pivot. Furthermore, as shown in Figures 8(a) to 8(c), when the switching operation part 913 is positioned towards the door edge, the projection 921 of the switching claw part 92 engages with the arcuate notch 815a of the pivot body 80, and the projection 911 of the switching body 91 fits into the arcuate groove 814b, thereby restricting unintended pivoting of the pivot switching part 90.
[0092] Furthermore, as shown in Figures 8(d) and 8(e), when the switching operation unit 913 is positioned towards the door edge, the projection 921 of the switching claw 92 fits into the arc groove 814a of the opening 814, thereby restricting unintended pivoting of the pivot switching unit 90.
[0093] As shown in Figure 9, the pivot support portion 70 consists of a support body 72 that houses a hexagonal nut 71 inside, a bolt 73 that screws onto the hexagonal nut 71, and a substantially cylindrical collar portion 74 through which the bolt 73 can be inserted.
[0094] The support body 72 is configured to be positioned between a pair of mounting locking portions 516 of the sliding door side mounting portion 50, and is formed in a substantially convex shape that protrudes toward the front when viewed from the side, consisting of a flat support plate portion 721 and a support projection portion 722 that protrudes toward the front from the support plate portion 721. The support projection portion 722 is formed to be positioned in the gap between a pair of mounting extension portions 516b provided on the mounting locking portion 516 described above. The end of the support body 72 on the door-side end is chamfered in an arc shape.
[0095] Furthermore, the support body 72 has a recessed groove 723 formed on the door-end side, which is recessed toward the door-edge side, for accommodating the hexagonal nut 71. The receiving groove 723 is a groove whose length along the vertical direction corresponds to the width across flats of the hexagonal nut 71, and whose length along the in / out direction corresponds to the height of the hexagonal nut 71.
[0096] The support body 72 configured in this way has a circular through-hole 724 formed in front view, through which the support projection 722 penetrates the support body 722 in the inward and outward direction and communicates with the housing groove 723, allowing the threaded portion of the bolt 73 to be inserted.
[0097] The collar portion 74 consists of a cylindrical collar body 741 that can be inserted through the through hole 812 of the pivot portion 60, and a collar diameter expansion portion 742 that widens circumferentially from the inner end of the collar body 741.
[0098] The pivot support part 70 is constructed by housing a hexagonal nut 71 in the housing groove 723 of the support part body 72, and inserting a bolt 73 with a collar part 74 through it into the through hole 724 of the support part body 72 and screwing it into the hexagonal nut 71 (see Figure 4).
[0099] As described above, the pivot support section 70 supports the pivot section 60 pivotally with respect to the sliding door side mounting section 50, as shown in Figure 10, thereby forming the front sliding door side body 30. More specifically, as shown in Figure 10(a), the support body 72, which houses the hexagonal nut 71 constituting the pivot support part 70, is placed on the pivot mounting part 512 of the sliding door side mounting part 50. At this time, the support projection 722 of the support body 72 is positioned between the mounting extension 516b of the mounting locking part 516.
[0100] Furthermore, the collar body 741 of the collar part 74 is inserted through the through hole 812 formed in the circular recess 811 of the pivot part 60 from the back side, and the bolt 73 is inserted into the collar part 74 from the front side of the through hole 812.
[0101] Then, as shown in Figure 10(b), a bolt 73 is inserted from the front side into the collar portion 74 attached to the through hole 812 of the pivot portion 60, and screwed into a hexagonal nut 71 housed in the support portion body 72 via the through hole 724 of the support portion body 72. In this assembled state, the circular cover portion 813 is fitted into the circular recess portion 811 of the pivot portion body 80.
[0102] As shown in Figure 11, the sliding door side body 30, configured in this way, has a pivot part 60 that pivots relative to the sliding door side mounting part 50 with the collar part 74 as the pivot axis. In more detail, as shown in Figure 11(a), the pivot unit 60 attached to the sliding door mounting section 50 of the sliding door side body 30 has its switching body 91 of the pivot switching unit 90 positioned in front of the upper upright plate 518 and above the central upright plate 517 of the sliding door side mounting section 50. Therefore, the pivot unit 60 is prevented from unintentionally pivoting downward relative to the sliding door side mounting section 50 due to interference between the pivot switching unit 90 and the central upright plate 517.
[0103] As shown in Figure 11(b), the pivot part 60 can be pivoted upward using the collar part 74 of the pivot support part 70 as the pivot axis. Then, as shown in Figure 11(c), the pivot section 60, which has pivoted upward, pivots the pivot switching section 90 toward the door edge, so that the switching body 91 of the pivot switching section 90 is located above the upper upright plate 518. Therefore, the pivot section 60 can prevent the pivot switching section 90 from interfering with the upper upright plate 518 and unintentionally pivoting downward from its upward pivoted state.
[0104] Furthermore, as shown in Figure 11(d), when the pivot section 60 is pivoted upward, the pivot projection plate portion 824 of the pivot section 60 abuts against the lower surface of the central upright plate 517, thereby preventing it from pivoting excessively upward.
[0105] The front sliding door body 30 and the rear sliding door body 30, which are configured in a nearly symmetrical manner, will be briefly explained (see Figure 4). The rear sliding door side main body 30 has substantially the same configuration as the front sliding door side mounting part 50, except that the pair of mounting extensions 52 of the rear sliding door side mounting part 50 are provided upside down and configured to fit in with the pair of mounting extensions 52 of the front sliding door side mounting part 50 (see Figure 12), and the upper upright plate 518 is not provided. Therefore, the same reference numerals are used and the explanation is omitted.
[0106] The rear pivot section 60 has substantially the same configuration as the front pivot section 60, except that it lacks the opening 814 and pivot extension 815 of the pivot plate section 81, and the pivot projection plate section 824 and cylindrical mounting section 832 of the pivot wall section 82. Therefore, the same reference numerals are used and their description is omitted. Furthermore, the rear pivot support section 70 has substantially the same configuration as the front pivot support section 70. Therefore, the same reference numerals are used and their description is omitted. In this configuration, the sliding door mounting section 50 on the rear side has its downward pivot range restricted by the upper surface of the pivot body 80 interfering with the upper upright plate 518.
[0107] As shown in Figure 4, the main body connecting section 40 that connects the pair of sliding door side main bodies 30 configured as described above consists of a rod-shaped body 41 that connects the pair of pivot parts 60 in the inward and outward directions, and a pivot cover section 42 that covers the rod-shaped body 41 from the door edge side.
[0108] The rod-shaped body 41 has a shape in which the central part of a thin metal cylinder in the direction of entry and exit is bent in a concave shape when viewed from above, with the door edge facing it. In the bent rod-shaped body 41, both ends in the entry / exit direction are made into rod-shaped mounting parts 411 that attach to the pivot part 60, and the central part in the entry / exit direction is made into a rod-shaped straddling part 412 that straddles the edge of the sliding door 200 on the door-side. The rod-shaped straddling part 412 is formed to correspond to the thickness of the sliding door 200 (see Figure 2(b)).
[0109] As shown in Figure 4, the pivot cover portion 42 consists of a cover portion body 421 whose main surface perpendicular to the sliding direction is formed in the shape of a roughly rectangular flat plate, and a cover locking portion 422 that extends from the upper and lower ends of the cover portion body 421 toward the door tail and engages with the notch portion 523 of the mounting extension portion 52.
[0110] The cover body 421 is a rectangular flat plate having one side that is slightly longer in the vertical direction than the length of the mounting extension 52 in the vertical direction, and one side that is slightly longer in the entry / exit direction than the thickness of the sliding door 200.
[0111] As shown in Figure 12, the sliding door side locking body 20 is formed by connecting the main body connecting section 40, which is configured in this way, to a pair of sliding door side main bodies 30. More specifically, as shown in Figure 12(a), the pair of sliding door side bodies 30 are positioned opposite each other across the sliding door 200, with the pivot plate portion 81 fixed to the main surface of the sliding door 200 using double-sided tape T.
[0112] At this time, the mounting extension recess 521 and mounting extension projection 522 of the mounting extension portion 52 of the sliding door mounting portion 50 on the front side, and the mounting extension projection 522 and mounting extension recess 521 of the mounting extension portion 52 of the sliding door mounting portion 50 on the back side, are interlocked to prevent the pair of sliding door body parts 30 from shifting vertically. Note that it is sufficient to position at least the tip portion of the mounting extension projection 522 so that it fits into the mounting extension recess 521 on the other side.
[0113] Then, as shown in Figure 12(b), the pair of sliding door side bodies 30 attached to the sliding door 200 are inserted from the door edge side into the door edge side recess 823 of the pivot body 80, with the rod-shaped mounting portions 411 at both ends of the rod-shaped body 41 that constitute the body connecting portion 40 being inserted from the door edge side. At this time, the rod-shaped body 41 is attached with the rod-shaped straddling portion 412 straddling the sliding door 200. The rod-shaped body 41 is positioned between the pair of mounting extensions 52 of the sliding door mounting portion 50, which constitute the sliding door side main body 30, in the vertical direction, with the rod-shaped straddling portion 412 being positioned between them.
[0114] As shown in Figure 12(c), the sliding door side body 30 to which the rod-shaped body 41 is attached is mounted by locking the pivot cover portion 42, which constitutes the main body connecting portion 40, with the cover locking portion 422 and the mounting extension portion 52 into the notch portion 523. In this way, the sliding door locking body 20 is constructed by connecting the main body connecting part 40 with a pair of sliding door side main bodies 30.
[0115] As shown in Figure 12(d), the sliding door side locking body 20 configured in this way allows the rod-shaped body 41 to pivot upwards when one of the sliding door side bodies 30 is pivoted upwards, with the rod-shaped mounting portion 411 pivoting upwards with the rod-shaped straddle portion 412 as the pivot axis. Therefore, by pivoting one sliding door body 30 upward, the other sliding door body 30 is pivoted upward via the rod-shaped body 41. The range of pivoting of the rod-shaped body 41 is restricted by the fan-shaped groove 514.
[0116] As described above, the sliding door locking device 1, which consists of a door frame side locking body 10 and a sliding door side locking body 20, is attached to the door frame 100 and the sliding door 200 using a mounting jig 300, as shown in Figure 13.
[0117] As shown in Figure 13(a), the mounting jig 300 is formed in the shape of a roughly rectangular plate with a cutout on the door-front side and the upper side, and consists of a flat plate portion 301 on the door-front side that is one step lower than the door-back side, and an upper edge portion 302 that runs along the upper edge of the flat plate portion 301.
[0118] The flat plate portion 301 is cut out in a shape that follows the end and bottom of the door-side end of the locking upright portion 116 (see Figure 13(b)). In addition, a cylindrical body is integrally provided at the bottom end of the flat plate portion 301, along the edge.
[0119] The upper edge portion 302 is formed in a plate shape that extends along the upper edge of the flat plate portion 301, with the leading edge being one step lower than the trailing edge. The leading edge end of the flat plate portion 301 protrudes slightly towards the leading edge and is formed in a stepped shape corresponding to the locking base portion 114.
[0120] The upper edge portion 302 is provided with a door frame side projection 303 that protrudes upward at a lower position on the door edge side and is inserted into the through hole 116a of the locking upright portion 116. Furthermore, the upper edge portion 302 is provided with a sliding door side projection 304 that protrudes upward at a higher point on the door-end side and engages with the sliding door side locking body 20, as described later.
[0121] As shown in Figure 13(b), the mounting jig 300 configured in this way allows the door frame side projection 303 to be inserted through the through hole 116a provided in the locking piece 112 of the locking part body 11 of the door frame side locking body 10 which is attached to the door frame 100.
[0122] Then, the sliding door side locking body 20 is attached to the sliding door side projection 304 of the mounting jig 300, through which the door frame side projection 303 is inserted into the through hole 116a, at a position where the insertion hole 822 provided in the front pivot body 80 is inserted.
[0123] In this manner, the mounting jig 300 is configured such that the door frame side projection 303 is inserted through the through hole 116a of the locking piece 112, and the sliding door side projection 304 is inserted through the insertion hole 822 of the pivot body 80, thereby mounting the door frame side locking body 10 and the sliding door side locking body 20.
[0124] As shown in Figure 13(b), the door frame side locking body 10 and the sliding door side locking body 20 can be attached to the door frame 100 and the sliding door 200 at a position where the locking claw portion 117 of the locking piece portion 112 constituting the door frame side locking body 10 engages with the locking groove 825 of the sliding door side locking body 20. After attaching the door frame side locking body 10 and the sliding door side locking body 20 to the door frame 100 and the sliding door 200, the mounting jig 300 is removed (see Figure 14).
[0125] The sliding door locking device 1, installed in this manner, can lock the sliding door 200. The method for locking the sliding door 200 using the sliding door locking device 1 will be explained below with reference to Figure 14. Figure 14 is an explanatory diagram showing how to lock the sliding door 200, with a cross-sectional view at the position corresponding to Figure 3(b). For details, Figure 14(a) shows a schematic cross-sectional view of the sliding door 200 in the open position, Figure 14(b) shows a schematic cross-sectional view of the sliding door 200 slid toward the door edge until the locking guide portion 826 of the sliding door side locking body 20 and the tapered surface 117a provided on the locking claw portion 117 come into contact, and Figure 14(c) shows a schematic cross-sectional view of the sliding door 200 in the locked position.
[0126] As shown in Figure 14, the sliding door 200, when open, is closed by sliding towards the leading edge relative to the door frame 100. When the sliding door 200 is closed, as shown in Figure 14(b), first, the tapered surface 117a provided on the locking claw portion 117 of the locking body 11 that constitutes the door frame side locking body 10 and the locking guide portion 826 of the pivot portion 60 that constitutes the front side sliding door side locking body 20 come into contact, and an external force acting on the front side pivot portion 60 causes it to pivot upward.
[0127] In this way, when the pivot part 60 on the front side pivots upward, the pivot part 60 on the back side, which is linked by the rod-shaped body 41, also pivots upward. Then, from this pivoted state of the pair of pivot parts 60, by sliding the sliding door 200 further toward the door edge, the locking claw portion 117 of the locking part body 11 engages with the locking groove 825 provided in the pivot wall portion 82, as shown in Figure 14(c).
[0128] In this way, simply by closing the sliding door 200, the door frame side locking body 10 and the sliding door side locking body 20 engage with each other, and the sliding door locking device 1 can lock the sliding door 200. To unlock and open a sliding door 200 that is locked to the sliding door locking device 1 in this manner, one of the pivot parts 60 on the front and back sides should be pivoted upward, and the sliding door 200 should be slid towards the door edge. This allows the sliding door locking device 1 to be unlocked from both sides in the direction of entry and exit.
[0129] Furthermore, as mentioned above, by restricting the pivot of the pivot section 60 on the front side with the pivot switching section 90, it is possible to switch to a state where the sliding door 200 is not locked when the door is closed (see Figure 11(d)).
[0130] In this sliding door locking device 1 for locking the sliding door 200, the locking groove 825 of the pivot part 60 on the front side and the locking piece 112 of the locking body 10 on the door frame side cooperate to form a locking part 2 that locks the sliding door 200 (see Figure 14(c)).
[0131] As described above, the sliding door locking device 1 for locking a sliding door 200 that slides relative to the door frame 100 comprises a locking part 2 for locking the sliding door 200, a front sliding door side body 30 attached to the front main surface of the sliding door 200 and used to unlock the locking part 2, a rear sliding door side body 30 attached to the rear main surface of the sliding door 200 and used to unlock the locking part 2, and a rod-shaped body 41 that links the unlocking operations of the front sliding door side body 30 and the rear sliding door side body 30. The locking part 2 is provided with an insertion hole 822 and a locking groove 825 of the front sliding door side body 30 which is attached to the sliding door 200, and a locking piece 112 of the door frame side locking body 10 which is attached to the door frame 100 and locks the sliding door 200 in cooperation with the insertion hole 822 and locking groove 825 of the front sliding door side body 30, and the front sliding door side body 30 is provided with an insertion hole 822 and a locking groove 825 of the front sliding door side body 30.
[0132] With this configuration, the sliding door 200 can be unlocked from both sides in the direction of entry and exit, and can also be easily removed. More specifically, the locking device 1 for sliding doors has a rod-shaped body 41 that links the unlocking operation of the front sliding door body 30, which is attached to the front side of the sliding door 200, and the rear sliding door body 30, which is attached to the rear side of the sliding door 200.
[0133] Therefore, by performing an unlocking operation on either the front sliding door body 30 or the rear sliding door body 30, the insertion hole 822 and locking groove 825 of the front sliding door body 30 and the locking piece 112 of the door frame side locking body 10 can be unlocked. As a result, the locking mechanism 1 for the sliding door can be unlocked from both sides of the sliding door 200 in the direction of entry and exit.
[0134] In addition, the sliding door locking device 1 is attached to the sliding door 200 without requiring any processing to create an opening, for example. The front sliding door body 30 and the rear sliding door body 30 are attached together, so it can be easily removed, for example, when restoring the property to its original condition upon termination of a lease agreement, or when it becomes unnecessary as the child grows up. Therefore, the sliding door locking device 1 can be unlocked from both sides of the sliding door 200 in the direction of entry and exit, and can also be easily removed.
[0135] Furthermore, the front sliding door body 30 is equipped with a front sliding door mounting portion 50 fixed to the front main surface of the sliding door 200 and a front pivot portion 60 movably attached to the front sliding door mounting portion 50, and the rear sliding door body 30 is equipped with a rear sliding door mounting portion 50 fixed to the rear main surface of the sliding door 200 and a rear pivot portion 60 movably attached to the rear sliding door mounting portion 50, and the insertion hole 822 and locking groove 825 of the sliding door body 30 are provided on the front pivot portion 60, and the rod-shaped body 41 has one end attached to the front pivot portion 60 and the other end attached to the rear pivot portion 60, and is also provided with a rod-shaped straddle portion 412 that straddles the edge on the door side of the sliding door 200, and the movement of the front pivot portion 60 and the rear pivot portion 60 is linked.
[0136] With this configuration, the locking mechanism 1 for sliding doors is unlocked by moving the front pivot 60 and the rear pivot 60, which are movably attached to the front sliding door mounting part 50 and the rear sliding door mounting part 50, respectively. This prevents the front pivot 60 and the rear pivot 60 from interfering with the sliding door 200 due to movement during the unlocking operation. This prevents the sliding door locking device 1 from damaging the main surface of the sliding door 200 due to the movable pivot parts 60 on the front and rear sides.
[0137] Furthermore, since the rod-shaped body 41 is provided with a rod-shaped strut 412, for example, the front pivot 60 and the rear pivot 60 can be directly connected by the rod-shaped body 41 without forming a through hole in the sliding door 200 in the thickness direction, thereby ensuring that the front pivot 60 and the rear pivot 60 are reliably interlocked.
[0138] Therefore, when the sliding door locking device 1 is removed from the sliding door 200, it is possible to prevent any marks from being left on the main surface of the sliding door 200 where it was attached, and it is also possible to reliably unlock the sliding door 200 from both sides in the direction of entry and exit.
[0139] Furthermore, the front pivot section 60 is pivotably attached to the front sliding door mounting section 50, and the rear pivot section 60 is pivotably attached to the rear sliding door mounting section 50, with the rod-shaped body 41 linking the pivoting of the front pivot section 60 and the rear pivot section 60. With this configuration, the locking mechanism 2 can be easily unlocked by pivoting the front pivot 60 and the rear pivot 60, thereby improving the workability of the unlocking operation.
[0140] Furthermore, a pivot cover portion 42 is provided to cover the rod-shaped straddle portion 412. With this configuration, when the sliding door 200 is closed, the rod-shaped strut 412 and the door frame 100 do not come into direct contact, thereby preventing damage to the rod-shaped strut 412. This prevents the interlocking between the front pivot 60 and the rear pivot 60 from being disengaged.
[0141] Furthermore, the locking mechanism 2 is configured such that when the sliding door 200 is closed, the insertion hole 822 and locking groove 825 of the sliding door side body 30 on the front side and the locking piece 112 of the door frame side locking body 10 come into close proximity and lock.
[0142] With this configuration, simply closing the sliding door 200 locks the insertion hole 822 and locking groove 825 of the sliding door body 30 on the front side and the locking piece 112 of the door frame side locking body 10, thus preventing the sliding door 200 from being forgotten to be locked.
[0143] Furthermore, a pivot switching unit 90 is provided to restrict the locking of the insertion hole 822 and locking groove 825 of the front sliding door side body 30 and the locking piece 112 of the door frame side locking body 10 when the sliding door 200 is closed.
[0144] With this configuration, closing the sliding door 200 allows switching between a state in which the insertion hole 822 and locking groove 825 of the front sliding door body 30 and the locking piece 112 of the door frame side locking body 10 are locked, and a state in which the locking of the insertion hole 822 and locking groove 825 of the front sliding door body 30 and the locking piece 112 of the door frame side locking body 10 is restricted.
[0145] Therefore, the sliding door locking device 1 not only prevents forgetting to lock the sliding door 200, but also reduces the effort required to unlock it each time, for example, when the sliding door 200 is opened and closed frequently.
[0146] In the correspondence between the structure of this invention and the embodiments described above, The sliding door locking device of this invention corresponds to the sliding door locking device 1 of the embodiment, The same applies to the following: The locking mechanism corresponds to locking mechanism 2. The operating section on one side and the operating section on the other side correspond to the sliding door body 30. The operation interlocking part corresponds to the rod-shaped body 41, The locking mechanism on the sliding door side corresponds to the insertion hole 822 and the locking groove 825. The locking part on the door frame side corresponds to the locking piece 112, The fixing portion on one side and the fixing portion on the other side correspond to the sliding door side mounting portion 50. The movable part on one side and the movable part on the other side correspond to the pivot part 60, The edge-crossing portion corresponds to the rod-shaped crossing portion 412, The straddle covering portion corresponds to the pivot cover portion 42, The locking restriction means corresponds to the pivot switching unit 90, This invention is not limited to the configuration of the embodiments described above, and many other embodiments can be obtained.
[0147] For example, in the above embodiment, the locking part 2 is configured to lock by engaging the insertion hole 822 and locking groove 825 of the front sliding door side body 30 with the locking piece 112 of the door frame side locking body 10. However, it may also be configured to fit together or to be fixed by magnetic force.
[0148] Furthermore, the sliding door body 30 unlocks the locking part 2 by pivoting the pivot part 60 that constitutes the sliding door body 30 relative to the sliding door mounting part 50. However, the entire sliding door body 30 may also be configured to unlock the locking part 2 by moving it relative to the sliding door 200.
[0149] Furthermore, the rod-shaped body 41 that interlocks the pair of pivot parts 60 is formed by bending a cylindrical member, but it may also be made of a wire-shaped member. Furthermore, although the rod-shaped body 41 directly connects and interlocks the front sliding door body 30 and the rear sliding door body 30, they may also be interlocked indirectly, for example, by magnetic force.
[0150] Furthermore, although the pivot part 60 is pivotally mounted to the sliding door mounting part 50, it is sufficient that the pivot part 60 is movable relative to the sliding door mounting part 50; for example, it may be mounted slidably.
[0151] Furthermore, the configuration of the pivot switching section 90 is not limited as long as it is configured to restrict the pivoting of the pivot section 60 relative to the sliding door mounting section 50. For example, the lower surface of the pivot wall section 82 of the pivot body 80 may be divided into a door-front side and a door-back side, and the door-front side of the sliding door body 30 on the front side, which is provided with the insertion hole 822 and the locking groove 825, may be configured to slide toward the door-back side.
[0152] In this case, by sliding the leading edge portion towards the trailing edge, it is possible to restrict the locking groove 825 and the locking piece 112 of the door frame side locking body 10 from locking when the sliding door 200 is closed.
[0153] Furthermore, in this embodiment, the door frame side locking body 10 is attached to the front side of the sliding door 200, but it may also be attached to the back side of the sliding door 200. In this case, the locking cover portion 12 can be attached to the locking body 11 such that the cover extension portion 123 is located on the back side, thereby protecting the locking body 115 of the locking body 11.
[0154] Furthermore, although the door frame side locking body 10 is attached to the door frame 100 with double-sided tape T, it may also be screwed to the vertical frame of the door frame 100 through through holes provided near the upper and lower ends of the locking plate portion 111.
[0155] Furthermore, although the sliding door side locking body 20 is attached to the sliding door 200 by double-sided tape T at the sliding door side mounting portion 50, it may also be screwed to the edge of the sliding door 200 through a through hole formed in the mounting extension portion 52. This allows for firm fixation without damaging the main surface of the sliding door 200. Furthermore, the front sliding door body 30 and the rear sliding door body 30 may be configured symmetrically in the direction of entry and exit, and a pair of door frame side locking bodies 10 may be provided on either side of the closed sliding door 200.
[0156] The shape of the sliding door side body 30 of the sliding door side locking body 20 is designed with aesthetics in mind. In the example above, the shape of the pivot part 60 was made such that the end on the side that serves as the axis of rotation is semicircular in a front view, giving the impression of a round shape without corners. However, as shown in the perspective view of Figure 15, for example, it is also possible to use a shape based on a square. In this case, it is preferable to use a cover part 813a with a square shape in a front view instead of a circular cover part 813. [Explanation of Symbols]
[0157] 1… Locking device for sliding doors 2... Locking mechanism 10... Door frame side locking mechanism 20... Sliding door side locking mechanism 30... Sliding door side main body 40...Main unit connection part 41…Rod-shaped body 42...Pivot cover section 50... Sliding door side mounting part 60…Pivot section 90... Pivot switching section 100... Door frame 112... Locking piece 200... Sliding door 822... Through hole 825... Locking groove
Claims
1. A locking device for sliding doors that slide against a door frame, A locking mechanism for locking the aforementioned sliding door, A one-sided operating unit is attached to one side of the main surface of the sliding door and is used to unlock the locking mechanism, The other side operating unit, which is attached to the other side of the main surface of the sliding door and performs the unlocking operation of the locking part, The system is equipped with an operation linkage unit that links the unlocking operations of the one-sided operation unit and the other-sided operation unit, The aforementioned locking mechanism is The sliding door is equipped with a sliding door-side locking part that is attached to the sliding door, and a door frame-side locking part that is attached to the door frame and works in cooperation with the sliding door-side locking part to lock the sliding door. The sliding door locking mechanism is provided on at least one of the one operating mechanism and the other operating mechanism. A locking device for sliding doors.
2. The aforementioned one-side operating unit is The sliding door is provided with a one-sided fixing part fixed to one side of the main surface and a one-sided movable part movably attached to the one-sided fixing part. The other side operating unit is, The sliding door is provided with a fixing part on the other side that is fixed to the other side of the main surface of the sliding door, and a movable part on the other side that is movably attached to the fixing part on the other side. The aforementioned locking mechanism on the sliding door side is Provided on at least one of the aforementioned movable part on one side and the aforementioned movable part on the other side, The aforementioned operation linkage unit is One end is attached to the movable part on one side, and the other end is attached to the movable part on the other side, and an edge-stretching portion is provided that straddles the edge on the leading edge side of the sliding door. The movement of the one movable part and the other movable part are linked. A locking device for sliding doors according to claim 1.
3. The aforementioned movable part on one side is The aforementioned one-sided fixing portion is pivotably attached to the aforementioned fixing portion, The other movable part is, It is pivotably attached to the other side fixing part, The aforementioned operation linkage unit, The pivot movement of the one movable part and the other movable part is linked. A locking device for sliding doors according to claim 2.
4. A covering portion is provided to cover the aforementioned edge-crossing portion. A locking device for sliding doors according to claim 2.
5. The aforementioned locking mechanism is The sliding door is configured such that when the door is closed, the locking mechanism on the sliding door side and the locking mechanism on the door frame side come into close proximity and lock together. A locking device for sliding doors according to claim 1.
6. The system is equipped with a locking restriction means that restricts the locking of the sliding door-side locking mechanism and the door frame-side locking mechanism when the sliding door is closed. A locking device for sliding doors according to claim 5.