A multi-position self-locking system for sliding door leaf

Abstract

The application discloses a kind of multi-position self-locking systems of sliding door leaf, it is related to door and window technical field, including frame and the guide rail of installation in the bottom of frame, two sliding doors are movably installed in frame along guide rail, more than three horizontal shafts that are parallel to each other are rotatably installed in the bottom of sliding door, roller is slidably installed on horizontal shaft along its axial direction, the surface of roller is evenly installed with several pins along its circumferential direction, the position corresponding to each roller on sliding door is provided with several insertion slots compatible with pin.The sliding door of the present application is translated to any position relative to frame, the user only needs to rotate the handle to lock the position of sliding door, specifically, by limiting the roller, the roller cannot roll or slide relative to the frame, so as to realize the self-locking effect of sliding door.In the process of rotating the handle, the roller is not only limited, but also limited to the side plate, without the need for fastening the side plate by fastener, improving the convenience when cleaning.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, specifically to a multi-position self-locking system for sliding doors. Background Technology

[0002] Doors and windows are categorized into various types based on their opening and closing mechanisms, including sliding, folding, and pivoting types. Sliding doors and windows open by sliding horizontally, without taking up indoor or outdoor space, making them particularly suitable for narrow areas such as balconies and kitchens. The sliding design eliminates the need for outward or inward opening; operation is completed simply by sliding left or right, making them suitable for the elderly, children, and people with disabilities. Furthermore, daily maintenance and cleaning are simpler.

[0003] 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, and a first glass strip is provided on one side of the sliding sash frame. A first glass is provided between the sliding sash frame and the first glass strip. A pulley is provided above the bottom of the first frame, and the sliding sash frame is fixed above the pulley. A fireproof strip is provided on the side wall of the sliding sash frame. A mullion is fixedly connected to the middle of the second frame, and second glass strips are provided on both sides of the mullion and on both inner sides of the second frame.

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

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

[0006] The purpose of this invention is to provide a multi-position self-locking system for sliding doors to overcome the aforementioned shortcomings in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: 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 being movably installed along the guide rail within the frame, three or more parallel horizontal shafts being rotatably installed at the bottom of the sliding doors, rollers being slidably installed on the horizontal shafts along their axial direction, and a number of pins being evenly installed on the surface of the rollers along their circumference, and a number of slots adapted to the pins being provided on the sliding doors corresponding to the position of each roller.

[0008] As a preferred embodiment of the present invention, a horizontal bar is slidably installed on the sliding door, and a first wedge block and a second wedge block are installed on the horizontal bar corresponding to the position of each roller through a bracket; the inclined surfaces of the first wedge block and the second wedge block respectively fit against the two side edges of the roller.

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

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

[0011] As a preferred embodiment of the present invention, the pin and the roller are slidably engaged along the roller axis, and a telescopic spring is connected between the pin and the roller.

[0012] As a preferred embodiment of the present invention, a plurality of teeth are evenly arranged on the circumferential surface of the roller, and a groove for engaging with the teeth is provided on the frame.

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

[0014] As a preferred embodiment of the present invention, a baffle strip that cooperates with the side plate is fixedly installed on the inner wall of the notch. When the side plate and the baffle strip are in contact, the outer side of the side plate is flush with the outer side of the sliding door; a groove is provided on the outer side of the side plate.

[0015] As a preferred embodiment 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 embodiment of the present invention, a sleeve is slidably mounted on the handle, and a through-handle rod is fixedly mounted inside the sleeve; a first positioning hole and a second positioning hole that cooperate with the through-handle are provided on the circumferential surface of the sliding door that contacts the handle.

[0017] In the above technical solution, the present invention provides a multi-position self-locking system for sliding doors. When the sliding door is moved to any position relative to the frame, the user only needs to turn the handle to lock the position of the sliding door. Specifically, this is achieved by restricting the rollers so that they can neither roll nor slide relative to the frame, thus realizing the self-locking effect of the sliding door. During the user's turn of the handle, not only are the rollers limited, but the side panel is also limited, keeping the side panel in contact with the retaining strip. Therefore, there is no need to fasten the side panel with fasteners, improving the convenience of cleaning. The present invention enhances the torque of the handle through a pull-out sleeve, and also locks the handle through the cooperation of the insert rod and the second positioning hole, preventing children from turning the handle to unlock and open the door. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional structural diagram of the multi-position self-locking system for the sliding door 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 Enlarged view of point A in the middle;

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

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0025] Figure 7 This is a schematic diagram of the engagement state of the gear teeth and the slot in Example 1;

[0026] Figure 8 This is a schematic diagram showing the positional states of the first and second hooks in Example 1;

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

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Frame; 101. Slot; 2. Guide rail; 3. Sliding door; 301. Slot; 302. Notch; 303. Side plate; 304. Stop bar; 305. Groove; 306. First positioning hole; 307. Second positioning hole; 4. Horizontal shaft; 5. Roller; 501. Gear tooth; 6. Pin; 7. Horizontal bar; 8. First wedge block; 9. Second wedge block; 10. Vertical bar; 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 Implementation

[0030] 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, including a rectangular frame 1 and a guide rail 2 installed at the bottom of the frame 1. Two sliding doors 3 are movably installed inside the frame 1 along the guide rail 2. Each sliding door 3 includes a rectangular door frame and glass located inside the door frame.

[0033] like Figure 3 and Figure 5 As shown, each sliding door 3 has three sets of parallel horizontal shafts 4 rotatably mounted at its bottom. The horizontal shafts 4 are located in the same horizontal plane and perpendicular to the guide rail 2, with two horizontal shafts 4 in each set coaxial. Each horizontal shaft 4 has a roller 5 slidably mounted along its axial direction. When the horizontal shaft 4 rotates, the roller 5 rotates synchronously. Several pins 6 are evenly mounted on the surface of the roller 5 along its circumference. The pins 6 and the roller 5 slide in a sliding engagement along the axial direction of the roller 5, and a telescopic spring connects the pins 6 and the roller 5. Several slots 301 corresponding to the positions of each roller 5 are provided on the sliding door 3, which are adapted to the pins 6. Under normal circumstances, the pins 6 do not contact the slots 301, that is, the rollers 5 can roll normally. The user only needs to apply pushing or pulling force to the sliding door 3 to control the position of the sliding door 3. When the user moves the sliding door 3 to any position, an axial force is applied to the roller 5 by external force, causing the pin 6 to insert into the slot 301, thereby limiting the roller 5 and preventing it from rolling, thus locking the position of the sliding door 3.

[0034] like Figure 2 , Figure 3 and Figure 6As shown, a horizontal rod 7 is slidably mounted on the sliding door 3 in the horizontal direction. The horizontal rod 7 is located above the rollers 5 and parallel to the guide rail 2. The horizontal rod 7 will not fall off the sliding door 3. A first wedge block 8 and a second wedge block 9 are mounted on the horizontal rod 7 corresponding to the position of each roller 5 via a bracket. The two sides of the roller 5 are rounded, and the inclined surfaces of the first wedge block 8 and the second wedge block 9 are respectively in contact with the two sides of the roller 5. Thus, when the horizontal rod 7 undergoes horizontal displacement under the action of external force, the first wedge block 8 and the second wedge block 9 also undergo horizontal displacement simultaneously, pushing the roller 5 to move axially, thereby controlling the position of the pin 6 relative to the slot 301. Specifically, initially, the pin 6 is not in contact with the slot 301. When the horizontal rod 7 undergoes a positive horizontal displacement, the first wedge block 8 pushes the roller 5 towards the slot 301, and the second wedge block 9 makes space for the roller 5, allowing the pin 6 to insert into the slot 301. Then, when the horizontal rod 7 undergoes a reverse horizontal displacement, the second wedge block 9 pushes the roller 5 away from the slot 301, and the first wedge block 8 makes space for the roller 5, separating the pin 6 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 pivot 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. 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 move 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 the designated position and turns the handle 12, the latch 6 may not be able to be inserted into the slot 301 exactly. 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 1cm), the latch 6 will quickly insert into the nearest slot 301, thereby locking the roller 5.

[0036] In the above solution, although the roller 5 is locked, it only restricts the roller 5 from rolling, but does not 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, the following design was also made in this embodiment.

[0037] like Figure 3 and Figure 7As shown, the roller 5 has a plurality of teeth 501 evenly arranged circumferentially on its circumferential surface, and the frame 1 has a groove 101 that engages with the teeth 501. When the roller 5 rolls, the teeth 501 continuously mesh with the groove 101. When the roller 5 cannot rotate, the teeth 501 on it are still engaged with the groove 101. In this way, the roller 5 cannot slide relative to the frame 1, thus improving the self-locking effect of the sliding door 3.

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

[0039] like Figure 2 , Figure 3 and Figure 5 As shown, the sliding door 3 includes notches 302 on both sides and side plates 303 adapted to the notches 302. The notches 302 correspond to the horizontal position of the rollers 5, and slots 301 are formed on the inner side of the side plates 303. A stop strip 304 that mates with the side plates 303 is fixedly installed on the inner wall of the notches 302. When the side plates 303 and the stop strip 304 are in contact, the outer side of the side plates 303 is flush with the outer side of the sliding door 3. A groove 305 is formed on the outer side of the side plates 303, allowing the user to hold the side plates 303 for installation and removal. An L-shaped first hook 15 is fixedly installed on the inner side of the side plates 303, and an inverted L-shaped second hook 16 is fixedly installed at the bottom of the vertical rod 10 corresponding to the position of the first hook 15.

[0040] Specifically, when installing the side panel 303, the user aligns the side panel 303 with the notch 302 and pushes it into the notch 302 until the side panel 303 is in contact with the retaining strip 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, causing the vertical rod 10 to descend, the second hook 16 descends synchronously and comes into contact with the first hook 15, thus limiting the first hook 15 and the side plate 303, ensuring that the side plate 303 always comes into contact with the stop bar 304, and will not be horizontally displaced under the force of the pin 6, ensuring that the pin 6 can be inserted into the slot 301.

[0041] In summary, in this embodiment, the side panel 303 and the main body of the sliding door 3 do not need to be connected by bolts or other fasteners. The user only needs to insert the side panel 303 into the notch 302 and push the side panel 303 to fit against the stop strip 304 to complete the installation. When the sliding door 3 moves horizontally, it will drive the side panel 303 to move horizontally in sync. When the user turns the handle 12 to 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 use the handle 12 to hold the side panel 303 to remove it, thereby completing the disassembly of the side panel 303. This allows for convenient cleaning of the roller 5 from the notch 302.

[0042] Example 2

[0043] like Figure 9 As shown, based on the previous embodiment, in this embodiment, a sleeve 17 is slidably installed on the handle 12, and an insert rod 18 that passes through the handle 12 is fixedly installed inside the sleeve 17; a first positioning hole 306 and a second positioning hole 307 that cooperate with the insert rod 18 are opened on the circumferential surface of the sliding door 3 that contacts the handle 12. Figure 9 In the initial state shown, the insert rod 18 is inserted into the first positioning hole 306, and the handle 12 and sleeve 17 cannot rotate. The user can hold the sleeve 17 to push the sliding door 3. When it is necessary to lock the sliding door 3, the user pulls the sleeve 17 outward, causing the insert rod 18 to separate 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 is in contact with the upper surface of the horizontal section of the first hook 15, the second hook 16 can no longer descend, and the user can no longer rotate the sleeve 17 and handle 12. At this time, the insert rod 18 is exactly aligned with the second positioning hole 307. The user can retract the sleeve 17 to insert the insert rod 18 into the second positioning hole 307, thereby completing the locking of the handle 12. This embodiment cleverly utilizes the first hook 15 to limit the second hook 16 in the vertical direction, thereby accurately positioning the rotation angle of the handle 12. That is, the cooperation between the first hook 15 and the second hook 16 not only achieves the limitation of the side plate 303 position, but also achieves the accurate positioning of the rotation angle of the handle 12.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-position self-locking system for sliding door leaves, comprising a frame (1) and a guide rail (2) mounted at the bottom of the frame (1), two sliding doors (3) being movably mounted in the frame (1) along the guide rail (2), characterized in that, The bottom of the sliding door (3) is rotatably provided with three or more horizontal shafts (4) parallel to each other, the horizontal shafts (4) are slidably provided with rollers (5) along the axial direction, the surface of the roller (5) is uniformly provided with a plurality of pins (6) along the circumferential direction, and the sliding door (3) is provided with a plurality of slot (301) corresponding to the position of each roller (5) and matched with the pin (6). The sliding door (3) is slidably provided with a horizontal rod (7), and the horizontal rod (7) is provided with a first wedge block (8) and a second wedge block (9) through a support corresponding to the position of each roller (5); the inclined surfaces of the first wedge block (8) and the second wedge block (9) are respectively matched with the two side edges of the roller (5). The sliding door (3) is slidably provided with a vertical rod (10), and one end of the horizontal rod (7) is rotatably provided with a first connecting rod (11), and one end of the first connecting rod (11) is rotatably connected with the bottom end of the vertical rod (10). The sliding door (3) is rotatably provided with a handle (12), the rotating shaft of the handle (12) is fixedly provided with a rotating arm (13), one end of the rotating arm (13) is rotatably provided with a second connecting rod (14), and one end of the second connecting rod (14) is rotatably connected with the top end of the vertical rod (10).

2. A multi-position self-latching system for a sliding door leaf according to claim 1, characterized in that The pin (6) and the roller (5) are slidably connected along the axial direction of the roller (5), and the pin (6) and the roller (5) are connected with an extension spring.

3. A multi-point self-locking system for a sliding door leaf according to claim 2, characterized in that 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 clamping groove (101) matched with the gear teeth (501).

4. A multi-point self-locking system for a sliding door leaf according to claim 3, characterized in that The sliding door (3) comprises notches (302) on both sides thereof and side plates (303) matched with the notches (302), and the slot (301) is formed on the inner side surface of the side plate (303).

5. A multi-point self-locking system for a sliding door leaf according to claim 4, characterized in that The inner side surface of the side plate (303) is fixedly provided with a blocking strip (304) matched with the side plate (303), when the side plate (303) is matched with the blocking strip (304), the outer side surface of the side plate (303) is flush with the outer side surface of the sliding door (3); and the outer side surface of the side plate (303) is provided with a groove (305).

6. A multi-point self-locking system for a sliding door leaf according to claim 5, characterized in that The inner side surface of the side plate (303) is fixedly provided with a first hook (15) in L shape, and the bottom of the vertical rod (10) is fixedly provided with a second hook (16) in inverted L shape corresponding to the position of the first hook (15).

7. A multi-point self-locking system for a sliding door leaf according to claim 6, characterized in that The handle (12) is slidably provided with a sleeve (17), the sleeve (17) is fixedly provided with a plug rod (18) penetrating through the handle (12); and the circumferential surface of the sliding door (3) in contact with the handle (12) is provided with a first positioning hole (306) and a second positioning hole (307) matched with the plug rod (18).

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