Multi-position self-locking system for sliding door leaf

Abstract

The invention discloses a sliding door leaf multi-position self-locking system, and relates to the technical field of doors and windows, the sliding door leaf multi-position self-locking system comprises a frame and a guide rail mounted at the bottom of the frame, two sliding doors are movably mounted in the frame along the guide rail, more than three parallel horizontal shafts are rotatably mounted at the bottoms of the sliding doors, and rollers are slidably mounted on the horizontal shafts along the axial direction; a plurality of plug pins are evenly installed on the surfaces of the idler wheels in the circumferential direction of the idler wheels, and a plurality of inserting grooves matched with the plug pins are formed in the positions, corresponding to the idler wheels, of the sliding door. When the sliding door translates to any position relative to the frame, a user only needs to rotate the handle to lock the position of the sliding door, specifically, the rolling wheels are limited so that the rolling wheels cannot roll and cannot slide relative to the frame, and therefore the self-locking effect of the sliding door is achieved. In the process that a user rotates the handle, the rolling wheels are limited, the limiting effect on the side plates is achieved, the side plates do not need to be fastened through fasteners, and cleaning convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of doors and windows, and in particular to a multi-position self-locking system for sliding door leaves. Background Art

[0002] Doors and windows are classified into various types, including sliding, folding, and vertical rotating, depending on how they open and close. Sliding doors and windows open by sliding horizontally, saving space indoors and outdoors. They are particularly suitable for confined areas such as balconies and kitchens. The sliding design eliminates the need to open outward or inward, requiring only a left-right slide. This makes it suitable for the elderly, children, and those with disabilities, and simplifies daily maintenance and cleaning.

[0003] The Chinese utility model patent with publication number CN220955282U discloses a sliding door and window, including a first frame and a second frame. A sliding sash frame is provided on one side of the first frame, a first glass molding is provided on one side of the sliding sash frame, a first glass is provided between the sliding sash frame and the first glass molding, a pulley is provided above the bottom of the first frame, the sliding sash frame is fixed above the pulley, a fireproof rubber strip is provided on the side wall of the sliding sash frame, a center support is fixedly connected to the middle of the second frame, and second glass moldings are provided on both sides of the center support and the two inner sides of the second frame.

[0004] The Chinese utility model patent with publication number CN217501455U discloses a sliding door and window, whose technical solution includes: an outer window, an inner window, a window frame and a rotating assembly. A track is provided on the inner side of the outer window, and the inner window is slidably connected to the track. The rotating assembly includes a rotating shaft and a positioning component. One side of the window frame is rotatably connected to the inner window via the rotating shaft. The positioning component is used to position the window frame. Glass is provided on the inner side of the window frame.

[0005] In actual use, users often need to open the sliding door to a certain extent to facilitate indoor and outdoor ventilation. However, the sliding door in the existing technology can only be locked in the closed position and cannot be locked at any position of its travel. Its use is more limited when there are children or pets indoors. Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-position self-locking system for sliding doors to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-position self-locking system for sliding doors, comprising a frame and a guide rail installed at the bottom of the frame, two sliding doors are movably installed along the guide rail in the frame, and more than three parallel horizontal shafts are rotatably installed at the bottom of the sliding door, and rollers are installed on the horizontal shafts for sliding along their axial directions, and a number of latches are evenly installed on the surface of the rollers along their circumferences, and a number of slots corresponding to the latches are opened at the position corresponding to each roller on the sliding door.

[0008] As a preferred technical solution of the present invention, a horizontal rod is slidably installed on the sliding door, and a first wedge block and a second wedge block are installed on the horizontal rod corresponding to each roller through a bracket; the inclined surfaces of the first wedge block and the second wedge block are respectively fitted with the edges on both sides of the roller.

[0009] As a preferred technical solution of the present invention, a vertical rod is slidably installed on the sliding door, a first connecting rod is rotatably installed on one end of the horizontal rod, and one end of the first connecting rod is rotatably matched with the bottom end of the vertical rod.

[0010] As a preferred technical solution of the present invention, a handle is rotatably installed on the sliding door, a rotating arm is fixedly installed on the rotating shaft of the handle, a second connecting rod is rotatably installed on one end of the rotating arm, and one end of the second connecting rod is rotatably matched with the top end of the vertical rod.

[0011] As a preferred technical solution of the present invention, the latch and the roller are slidably matched along the axial direction of the roller, and a telescopic spring is connected between the latch and the roller.

[0012] As a preferred technical solution of the present invention, a plurality of gear teeth are evenly arranged on the circumferential surface of the roller along the circumferential direction, and a groove that cooperates with the gear teeth is opened on the frame.

[0013] As a preferred technical solution of the present invention, the sliding door includes notches on both sides thereof and side panels adapted to the notches, and the slots are provided on the inner sides of the side panels.

[0014] As a preferred technical solution of the present invention, a baffle that cooperates with the side panel is fixedly installed on the inner wall of the notch. When the side panel and the baffle are in contact with each other, the outer side surface of the side panel is flush with the outer side surface of the sliding door. A groove is provided on the outer side surface of the side panel.

[0015] As a preferred technical solution of the present invention, an L-shaped first hook is fixedly installed on the inner side of the side plate, and an inverted L-shaped second hook is fixedly installed at the bottom of the vertical rod corresponding to the position of the first hook.

[0016] As a preferred technical solution of the present invention, a sleeve is slidably installed on the handle, and an insertion rod passing through the handle is fixedly installed in the sleeve; a first positioning hole and a second positioning hole cooperating with the insertion rod are provided on the circumferential surface where the sliding door contacts the handle.

[0017] In the above technical solution, the present invention provides a multi-position self-locking system for sliding door leaves. When the sliding door is translated to any position relative to the frame, the user only needs to turn the handle to lock the position of the sliding door. Specifically, the roller is restricted so that the roller can neither roll nor slide relative to the frame, thereby achieving the self-locking effect of the sliding door. In the process of the user turning the handle, not only the roller is limited, but also the side panels are limited, so that the side panels remain in a state of being in contact with the barrier strips. In this way, there is no need to fasten the side panels with fasteners, which improves the convenience during cleaning. The present invention enhances the torque of the handle by pulling out the sleeve, and also locks the handle by cooperating with the insertion rod and the second positioning hole, thereby avoiding the situation where a child turns the handle to unlock and open the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the multi-position self-locking system for sliding doors in Example 1;

[0020] Figure 2 This is a schematic diagram of the first three-dimensional structure of the sliding door in Example 1;

[0021] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0022] Figure 4 This is a schematic diagram of a second three-dimensional structure of the sliding door in Example 1;

[0023] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle;

[0024] Figure 6 for Figure 4 The enlarged schematic diagram of point C in the middle;

[0025] Figure 7 Schematic diagram of the matching state of the gear teeth and the slot in Example 1;

[0026] Figure 8 Schematic diagram of the position states of the first hook and the second hook in Example 1;

[0027] Figure 9 This is a schematic structural diagram of the handle, sleeve, and insertion rod in Example 2.

[0028] Description of reference numerals:

[0029] 1. Frame; 101. Slot; 2. Guide rail; 3. Sliding door; 301. Slot; 302. Notch; 303. Side panel; 304. Stop bar; 305. Groove; 306. First positioning hole; 307. Second positioning hole; 4. Horizontal axis; 5. Roller; 501. Gear teeth; 6. Latch; 7. Horizontal rod; 8. First wedge block; 9. Second wedge block; 10. Vertical rod; 11. First connecting rod; 12. Handle; 13. Rotating arm; 14. Second connecting rod; 15. First hook; 16. Second hook; 17. Sleeve; 18. Insert rod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides a multi-position self-locking system for sliding doors, comprising a rectangular frame 1 and a guide rail 2 mounted at the bottom of the frame 1. Two sliding doors 3 are movably mounted within the frame 1 along the guide rail 2. The sliding doors 3 comprise a rectangular door frame and glass located within the door frame.

[0033] like Figure 3 and Figure 5 As shown, three sets of mutually parallel horizontal shafts 4 are rotatably mounted at the bottom of each sliding door 3. These shafts 4 lie in the same horizontal plane and are perpendicular to the guide rail 2, with the two shafts 4 in each set coaxial. A roller 5 is slidably mounted on each shaft 4 along its axis. When the shaft 4 rotates, the roller 5 rotates synchronously. Several latches 6 are evenly mounted along the circumference of the roller 5. The latches 6 and the roller 5 slide in axial engagement with each other, with a telescopic spring connected between the latches 6 and the roller 5. Several slots 301 corresponding to each roller 5 are defined on the sliding door 3. Under normal circumstances, the latches 6 do not contact the slots 301, meaning the roller 5 can roll normally. The user simply applies a push or pull force to the sliding door 3 to control its position. When the user moves the sliding door 3 to any position, an external force is applied to the roller 5 to apply an axial force, so that the latch 6 is inserted into the slot 301, thereby limiting the roller 5 and preventing the roller 5 from rolling, thereby locking the position of the sliding door 3.

[0034] like Figure 2 、 Figure 3 and Figure 6As shown, a horizontal rod 7 is mounted on the sliding door 3 for horizontal sliding movement. The horizontal rod 7 is located above the rollers 5 and parallel to the guide rail 2. This prevents the horizontal rod 7 from falling off the sliding door 3. A first wedge block 8 and a second wedge block 9 are mounted on the horizontal rod 7 at positions corresponding to each roller 5 via brackets. The edges of the rollers 5 are rounded, and the inclined surfaces of the first and second wedge blocks 8 and 9 align with the edges of the rollers 5. Thus, when the horizontal rod 7 is displaced horizontally by an external force, the first and second wedge blocks 8 and 9 also displace horizontally, pushing the rollers 5 axially, thereby controlling the position of the latch 6 relative to the slot 301. Specifically, initially at the bottom, the latch 6 does not contact the slot 301. When the horizontal rod 7 undergoes a positive horizontal displacement, the first wedge block 8 pushes the roller 5 toward the slot 301, the second wedge block 9 makes room for the roller 5, and the latch 6 is inserted into the slot 301. Then, when the horizontal rod 7 undergoes a negative horizontal displacement, the second wedge block 9 pushes the roller 5 toward the side away from the slot 301, the first wedge block 8 makes room for the roller 5, and the latch 6 is separated from the slot 301. A vertical rod 10 is slidably mounted on the sliding door 3. A first connecting rod 11 is rotatably mounted on one end of the horizontal rod 7, and one end of the first connecting rod 11 is rotatably engaged with the bottom end of the vertical rod 10. A handle 12 is rotatably mounted on the sliding door 3. A rotating arm 13 is fixedly mounted on the rotating shaft of the handle 12. A second connecting rod 14 is rotatably mounted on one end of the rotating arm 13, and one end of the second connecting rod 14 is rotatably engaged with the top end of the vertical rod 10. When the user turns the handle 12, the handle 12 drives the rotating arm 13 to rotate, and the rotating arm 13 drives the vertical rod 10 to descend a certain distance through the second connecting rod 14. During the descent of the vertical rod 10, the horizontal rod 7 is driven to translate forward through the first connecting rod 11, thereby locking the roller 5.

[0035] It should be noted that when the user moves the sliding door 3 to a predetermined position and turns the handle 12, the latch 6 may not be able to be inserted exactly into the slot 301. The latch 6 may be pressed between two adjacent slots 301. In this state, the telescopic spring between the latch 6 and the roller 5 is in a compressed state. Once an external force moves the sliding door 3 horizontally (this horizontal movement is very short, designed to be within 1 cm), the latch 6 will quickly insert into the nearest slot 301, thereby completing the locking of the roller 5.

[0036] In the above scheme, although the roller 5 is locked, it only restricts the roller 5 from rolling, but cannot restrict the roller 5 from sliding. If a large force is applied to the sliding door 3 in the self-locking state, it is still possible to overcome the static friction between the roller 5 and the frame 1 and cause the sliding door 3 to move. Based on this, this embodiment also has the following design.

[0037] like Figure 3 and Figure 7As shown, the circumferential surface of the roller 5 is uniformly provided with a plurality of gear teeth 501 along the circumferential direction, and the frame 1 is provided with a retaining groove 101 that engages with the gear teeth 501. As the roller 5 rolls, the gear teeth 501 continuously engage with the retaining groove 101. When the roller 5 is unable to rotate, the gear teeth 501 remain engaged with the retaining groove 101. In this way, the roller 5 cannot slide relative to the frame 1, thereby improving the self-locking effect of the sliding door 3.

[0038] Since the roller 5 is provided with gear teeth 501, dust and other stains remaining between the gear teeth 501 for a long time will affect the normal rolling of the roller 5, so the surface of the roller 5 needs to be cleaned regularly. In order to facilitate the user to clean the roller 5, this embodiment also has the following design.

[0039] like Figure 2 、 Figure 3 and Figure 5 As shown, the sliding door 3 includes notches 302 on either side thereof and side panels 303 that fit within the notches 302. The notches 302 correspond to the horizontal position of the roller 5, and slots 301 are provided on the inner surfaces of the side panels 303. A retaining bar 304 is fixedly mounted on the inner wall of the notch 302, cooperating with the side panels 303. When the side panels 303 and retaining bar 304 are in contact, the outer surfaces of the side panels 303 are flush with the outer surface of the sliding door 3. A groove 305 is provided on the outer surface of the side panels 303, allowing the user to grasp the side panels 303 for installation and removal. An L-shaped first hook 15 is fixedly mounted on the inner surface of the side panels 303, and an inverted L-shaped second hook 16 is fixedly mounted at the bottom of the vertical rod 10, corresponding to the position of the first hook 15.

[0040] Specifically, when the user installs the side plate 303, the side plate 303 is aligned with the notch 302 and then pushed flatly into the notch 302 until the side plate 303 fits with the blocking bar 304. At this time, the relative positions of the first hook 15 and the second hook 16 are as follows: Figure 8 As shown, the bottom surface of the vertical section of the second hook 16 is flush with the top surface of the vertical section of the first hook 15, and the right side of the vertical section of the second hook 16 is flush with the left side of the vertical section of the first hook 15. When the user rotates the handle 12 to lower the vertical rod 10, the second hook 16 simultaneously descends and engages with the first hook 15, thereby limiting the first hook 15 and the side plate 303, ensuring that the side plate 303 always engages with the stop bar 304 and does not undergo horizontal displacement under the force of the latch 6, ensuring that the latch 6 can be inserted into the slot 301.

[0041] To sum up, the side panel 303 in this embodiment does not need to be connected to the main diameter of the sliding door 3 by fasteners such as bolts. The user only needs to put the side panel 303 into the gap 302 and push the side panel 303 horizontally so that it fits with the blocking bar 304 to complete the installation. When the sliding door 3 moves horizontally, it will drive the side panel 303 to move synchronously; when the user turns the handle 12 to self-lock the sliding door 3, the side panel 303 will remain stationary relative to the sliding door 3; when the user needs to clean the roller 5, he only needs to keep the handle 12 in the initial unlocked state, and then hold the side panel 303 by the handle 12 to take it out to complete the disassembly of the side panel 303, so that the roller 5 can be easily cleaned from the gap 302.

[0042] Example 2

[0043] like Figure 9 As shown, based on the previous embodiment, a sleeve 17 is slidably installed on the handle 12 in this embodiment, and an insertion rod 18 passing through the handle 12 is fixedly installed in the sleeve 17; a first positioning hole 306 and a second positioning hole 307 that cooperate with the insertion rod 18 are provided on the circumferential surface where the sliding door 3 contacts the handle 12. Figure 9 In the initial state shown, the insertion rod 18 is inserted into the first positioning hole 306, and the handle 12 and the sleeve 17 cannot be rotated. The user can hold the sleeve 17 to push the sliding door 3. When the sliding door 3 needs to be locked, the user pulls out the sleeve 17 to separate the insertion rod 18 from the first positioning hole 306, and then rotates the sleeve 17. During this process, the second hook 16 descends relative to the first hook 15. When the bottom end of the second hook 16 fits with the upper surface of the horizontal section of the first hook 15, the second hook 16 cannot continue to descend, and the user cannot continue to rotate the sleeve 17 and the handle 12. At this time, the insertion rod 18 is aligned with the second positioning hole 307. The user can retract the sleeve 17 to insert the insertion rod 18 into the second positioning hole 307, thereby completing the locking of the handle 12. This embodiment cleverly uses the first hook 15 to limit the second hook 16 in the vertical direction, and accurately positions the rotation angle of the handle 12. That is, the cooperation between the first hook 15 and the second hook 16 not only limits the position of the side plate 303, but also accurately positions the rotation angle of the handle 12.

[0044] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A multi-position self-locking system for sliding doors, comprising a frame (1) and a guide rail (2) mounted at the bottom of the frame (1), wherein two sliding doors (3) are movably mounted along the guide rail (2) in the frame (1), and characterized in that: The bottom of the sliding door (3) is rotatably mounted with three or more mutually parallel horizontal shafts (4), and rollers (5) are slidably mounted on the horizontal shafts (4) along their axial directions. A plurality of latches (6) are evenly mounted on the surface of the rollers (5) along their circumferences, and a plurality of slots (301) adapted to the latches (6) are provided at positions corresponding to each roller (5) on the sliding door (3).

2. A multi-position self-locking system for sliding doors according to claim 1, characterized in that: A horizontal rod (7) is slidably mounted on the sliding door (3), and a first wedge block (8) and a second wedge block (9) are mounted on the horizontal rod (7) at a position corresponding to each roller (5) through a bracket; the inclined surfaces of the first wedge block (8) and the second wedge block (9) are respectively fitted with the edges on both sides of the roller (5).

3. A multi-position self-locking system for sliding doors according to claim 2, characterized in that: A vertical rod (10) is slidably mounted on the sliding door (3), and a first connecting rod (11) is rotatably mounted on one end of the horizontal rod (7), and one end of the first connecting rod (11) is rotatably engaged with the bottom end of the vertical rod (10).

4. A multi-position self-locking system for sliding doors according to claim 3, characterized in that: A handle (12) is rotatably mounted on the sliding door (3), a rotating arm (13) is fixedly mounted on the rotating shaft of the handle (12), a second connecting rod (14) is rotatably mounted on one end of the rotating arm (13), and one end of the second connecting rod (14) is rotatably engaged with the top end of the vertical rod (10).

5. The multi-position self-locking system for sliding doors according to claim 1, characterized in that: The latch (6) and the roller (5) are slidably matched along the axial direction of the roller (5), and a telescopic spring is connected between the latch (6) and the roller (5).

6. A multi-position self-locking system for sliding doors according to claim 4, characterized in that: A plurality of gear teeth (501) are evenly arranged along the circumferential direction on the circumferential surface of the roller (5), and a slot (101) that cooperates with the gear teeth (501) is provided on the frame (1).

7. A multi-position self-locking system for sliding doors according to claim 6, characterized in that: The sliding door (3) comprises notches (302) on both sides thereof and side panels (303) adapted to the notches (302), and the slots (301) are provided on the inner side surfaces of the side panels (303).

8. The multi-position self-locking system for sliding doors according to claim 8, characterized in that: A retaining bar (304) that cooperates with the side panel (303) is fixedly mounted on the inner wall of the notch (302); when the side panel (303) and the retaining bar (304) are in contact with each other, the outer side surface of the side panel (303) is flush with the outer side surface of the sliding door (3); and a groove (305) is provided on the outer side surface of the side panel (303).

9. The multi-position self-locking system for sliding doors according to claim 8, characterized in that: An L-shaped first hook (15) is fixedly mounted on the inner side surface of the side plate (303), and an inverted L-shaped second hook (16) is fixedly mounted on the bottom of the vertical rod (10) at a position corresponding to the first hook (15).

10. The multi-position self-locking system for sliding doors according to claim 8, characterized in that: A sleeve (17) is slidably mounted on the handle (12), and an insertion rod (18) penetrating the handle (12) is fixedly mounted in the sleeve (17); a first positioning hole (306) and a second positioning hole (307) that cooperate with the insertion rod (18) are provided on the circumferential surface of the sliding door (3) in contact with the handle (12).

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