A three-rail closer assembly

Abstract

The application discloses a three-rail closer assembly, which comprises a fixed rail, a movable rail and a rail closer assembled at the joint position of the fixed rail and the movable rail; the rail closer comprises a closer fixed part fixedly connected with the fixed rail and a closer movable part fixedly connected with the movable rail; the closer fixed part and the closer movable part are locked or unlocked through mutually matched taper surface insertion joint structures; the bottom surfaces of the fixed rail, the movable rail, the closer fixed part and the closer movable part are all formed with three rail bodies used for mounting frame bodies in parallel; frame body sliding grooves are formed on the rail bodies located on the left and right sides; pulley sliding grooves are formed on the upper ends of the frame body sliding grooves along the length direction; and the application realizes reliable switching and accurate locking of the rail in the door and window push-pull and flat-open dual modes.

Description

Technical Field

[0001] This invention relates to the field of door and window technology, and specifically to a three-track closing assembly for a swing sliding door that can slide on both the inner and outer tracks. Background Technology

[0002] The casement and sliding integrated door and window uses linked hardware to achieve one-click switching between sliding and casement opening modes, integrating the core advantages of both types of doors and windows and solving the shortcomings of traditional single opening methods. In daily use, it can be pushed and pulled along the track without occupying indoor space, suitable for small ventilation and daily passage. When moving large items or when whole-house cross ventilation is needed, the hinges can be unlocked to open the window sash 180 degrees to the wall, so that the opening is fully open and the ventilation volume is greatly improved.

[0003] The door closer is installed at the joint of the upper hanging rail segment. In push-pull mode, it locks and fixes the fixed rail and the moving rail; when switching to swing mode, it unlocks and separates the rails, allowing the door to rotate and open.

[0004] Existing door and window three-track upper rails generally only support a single push-pull or casement opening mode, and there is no reliable closing and locking structure at the track connection. In the push-pull state, the fixed track and moving track are prone to misalignment and large gaps, causing the door leaf to slide and get stuck. When switching to casement, the track cannot be effectively separated. The traditional closure has poor insertion and alignment accuracy, the lock tongue is prone to jamming and disengagement under force on one side, the gear transmission is prone to deviation and tooth breakage, and the lock tongue is prone to loosening due to the lack of reliable limit. At the same time, the track groove lacks a locking and limit mechanism, the push-pull door leaf is prone to accidental sliding when casement is open, the disassembly and maintenance of parts is inconvenient, the dual opening mode has poor compatibility and stability, and the overall service life is relatively short. Summary of the Invention

[0005] In order to solve the technical problems existing in the prior art, this application provides a three-track closure assembly to realize reliable switching between sliding and casement modes of doors and windows and precise track locking.

[0006] A three-rail closure assembly includes a fixed rail, a moving rail, and a track closure assembled at the connection position between the fixed rail and the moving rail. The track closure includes a closure fixing component fixedly connected to the fixed rail and a closure movable component fixedly connected to the moving rail. The closure fixing component and the closure movable component are locked or unlocked through a mutually adaptable conical insertion structure. The bottom surfaces of the fixed rail, the moving rail, the closure fixing component, and the closure movable component are all formed with three rails arranged side by side for mounting a frame. The rails on both sides are provided with frame sliding grooves, and the upper end of each frame sliding groove is provided with a pulley groove along the length direction. When the closure fixing component and the closure movable component are locked, the moving rail and the fixed rail are spliced ​​to form a smooth and continuous integral track, suitable for push-pull operation. When the closure fixing component and the closure movable component are unlocked, the moving rail can rotate relative to the fixed rail and separate from the fixed rail, suitable for swing-open operation.

[0007] In some embodiments, the conical insertion structure includes a fixing conical surface disposed on the closure fixing member, the fixing conical surface having a fixing stop protruding towards the closure movable member, the fixing stop having a stop conical surface and symmetrically formed ball bearing grooves on both sides; the closure movable member has a movable conical surface that fits and matches the fixing conical surface, the movable conical surface having a stop groove for the fixing stop to fit into, the bottom surface of the stop groove having a groove conical surface corresponding to and fitting the stop conical surface, the groove conical surface having a vertical plate groove communicating with the stop groove; the two sides of the stop groove have symmetrically formed ball bearing grooves. It is equipped with a ball-head plunger, the ball head of which can be engaged with the ball groove to complete the alignment and pre-tightening locking; the moving part of the closure device is equipped with a spring mounting plate, a gear, and two locking tongue plates that can move synchronously in opposite directions; both locking tongue plates are equipped with straight tooth plates, and both straight tooth plates mesh with the gear to drive the two locking tongue plates to extend and retract synchronously in opposite directions; one end of one locking tongue plate is equipped with a vertical plate, which extends through the vertical plate groove into the stop groove, and the other end of the locking tongue plate is equipped with a return spring between it and the spring mounting plate, providing elastic driving force for the two locking tongue plates to retract and return to their original position.

[0008] In some embodiments, when the closure fixing member and the closure moving member are locked, the two locking tongue plates retract inward and exit from the pulley grooves on both sides, and the frame can slide along the frame grooves on both sides to achieve the push-pull function; when the closure fixing member and the closure moving member are unlocked, the two locking tongue plates extend outward and into the pulley grooves on both sides, and limit and block the frame by the locking tongue plates, restricting the frame from sliding along the frame grooves.

[0009] In some embodiments, one end of the movable part of the closure is provided with a retaining edge, a positioning seat is installed on the retaining edge, and a positioning shaft is integrally formed on the positioning seat; one end of the fixed part of the closure is provided with a positioning seat groove adapted to the positioning seat and a positioning shaft groove adapted to the positioning shaft, and the positioning shaft groove and the positioning seat groove are interconnected.

[0010] In some embodiments, each locking tongue plate has an angled guide angle at its outer end. The angled guide angle facilitates the smooth insertion or removal of the locking tongue plate from the pulley groove, preventing movement jamming.

[0011] In some embodiments, two shaft holes are symmetrically provided on the movable part of the closure, and the axles at both ends of the gear are rotatably inserted into the two shaft holes to limit the gear axially and radially, preventing the gear from deviating or losing teeth during operation.

[0012] In some embodiments, the movable part of the closure is provided with a latch plate groove, and two latch plates are slidably assembled side by side inside the latch plate groove; a spring mounting plate is detachably installed between the two latch plates and fixedly connected to the movable part of the closure to restrict one of the latch plates from loosening; a limiting plate is also provided, which is detachably fixed to the outer wall of the latch plate groove to restrict the other latch plate from loosening.

[0013] In some embodiments, the closure fixing member is detachably fixed to the fixed rail by multiple screws, and the closure movable member is detachably fixed to the moving rail by multiple screws.

[0014] In some embodiments, the ball plunger includes a ball head, a compression spring, and a plunger. Two plungers are threadedly connected to the two sides of the movable part of the closure. The compression spring and the ball head are fitted together inside each plunger. The ball head is kept in an outward-pushing state by the spring force to achieve pre-positioning engagement.

[0015] The beneficial effects of this application are as follows: the three-track integrated design allows for flexible interchange of door leaf and screen frame installation positions, ensuring smooth hanging and sliding; the conical insertion and ball-head plunger pre-positioning ensure precise and rapid docking; the gear-driven double latches extend and retract synchronously in opposite directions, resulting in balanced force distribution; the angled guide angle prevents jamming; the double limit structure prevents the latches from loosening; and the double-axis hole limit of the gears prevents tooth breakage; the locking track is smooth and adaptable to push and pull, while the unlocking latch extends to prevent frame sliding, making swing opening safer; the screws are detachable for convenient maintenance and replacement, ensuring a firm lock that does not derail, significantly improving the stability and durability of doors and windows.

[0016] Additional aspects and advantages of this application will continue to be set forth in the description which follows, in part from the description which follows, or may be learned by practice of this application. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0018] Figure 1 This is a three-dimensional structural diagram of this application.

[0019] Figure 2 yes Figure 1 A schematic diagram of the right-side structure.

[0020] Figure 3 This is a top view of the track closure mechanism.

[0021] Figure 4 yes Figure 3 A schematic diagram of the split structure.

[0022] Figure 5 yes Figure 3 A schematic diagram of the right-side structure.

[0023] Figure 6 This is a left-view three-dimensional structural diagram of the track closure mechanism.

[0024] Figure 7 This is a schematic diagram of the split structure of the track closure mechanism from the left view.

[0025] Figure 8 This is a schematic diagram showing the disassembled structure of the moving part of the closure mechanism.

[0026] Figure 9 yes Figure 8 A rear-view stereoscopic structural diagram at point A.

[0027] Figure 10 yes Figure 8 A top-view schematic diagram of the structural plan at point A.

[0028] Figure 11 This is a right-view three-dimensional structural diagram of the track closure mechanism.

[0029] Figure 12 yes Figure 11 A schematic diagram of the split structure.

[0030] Figure 13 This is a three-dimensional structural diagram of the closure fastener.

[0031] Reference numerals: Fixed rail 1, Moving rail 2, Rail closure 3, Closure fixing component 4, Fixing component conical surface 40, Fixing component stop 41, Stop cone surface 410, Ball groove 411, Positioning seat groove 42, Positioning shaft groove 43, Closure moving component 5, Moving component conical surface 50, Stop groove 51, Groove cone surface 510, Vertical plate groove 511, Ball plunger 52, Ball head 520, Compression spring 521, Plunger 522, Spring holder Mounting plate 53, gear 54, wheel axle 54a, locking tongue plate 55, oblique guide angle 55a, locking tongue plate groove 55b, limiting plate 55c, straight tooth plate 550, upright plate 551, return spring 56, edge stop 57, positioning seat 58, positioning shaft 58a, shaft hole 59, rail body 6, frame slide groove 60, pulley slide groove 61, hanging part groove 62, fixed door frame body 7, sliding door frame body 8, sliding screen window frame 9, screw 10. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Reference Figure 1 , Figure 2A three-track closure assembly includes a long, fixed track 1, a long, movable track 2, and a track closure 3 assembled at the connection point between the fixed track 1 and the movable track 2. Specifically, the fixed track 1 can be fixed to the top of the upper frame of the door frame, and the movable track 2 is fixed to the top of the openable door leaf. The ends of the two are connected and locked, and separated and unlocked by the track closure 3. The track closure 3 includes a closure fixing part 4 fixedly connected to the fixed track 1 and a closure movable part 5 fixedly connected to the movable track 2. Both are roughly trapezoidal, and the combined part is roughly rectangular. The closure fixing part 4 and the closure movable part 5 are locked or unlocked by a mutually compatible conical insertion structure. The bottom surfaces of the fixed track 1, the movable track 2, the closure fixing part 4, and the closure movable part 5 are all formed with three rails 6 for installing the frame, and the rails 6 on the left and right sides are provided with frame sliding grooves 60 along their length. The upper end of each frame sliding groove 60 is along the length direction. A pulley groove 61 is provided, and a hanging part groove 62 is provided along the length direction between the pulley groove 61 and the frame groove 60 for the hanging part to pass through and slide. The hanging part is used to connect and fix the pulley and the frame. The rail 6 located in the middle can be used to fix or slide the frame. The frame can be a door frame, window frame or screen frame. In use, the fixed door frame 7 can be installed on the middle rail 6, and the sliding door frame 8 and sliding screen frame 9 can be installed in the frame groove 60 of the two side rails 6. The installation positions of the sliding door frame and the sliding screen frame can be freely interchanged. When the closing device fixing part 4 and the closing device moving part 5 are locked, the moving rail 2 and the fixed rail 1 are spliced ​​to form a smooth and continuous whole track, which is suitable for the push-pull mode. When the closing device fixing part 4 and the closing device moving part 5 are unlocked, the moving rail 2 can rotate relative to the fixed rail 1 and separate from the fixed rail 1, which is suitable for the swing mode.

[0034] In use, the fixed rail 1 is installed on the upper frame of the door, and the moving rail 2 is installed on the top of the door leaf. Locking and unlocking are achieved by the conical insertion of the closing device fixing part 4 and the closing device moving part 5. After locking, the moving and stationary rails are combined to form a complete three-rail full-length track. The middle rail can be used to install the fixed frame, and the two side rails are used to hang the sliding door leaf and screen window frame through the frame slide groove 60, pulley slide groove 61, and hanging part groove 62. The positions of the two can be interchanged to achieve smooth pushing and pulling. After unlocking, the closing device is disengaged, and the moving rail 2 can rotate to disengage from the fixed rail 1, and the door leaf switches to a swing opening mode. The three-rail integrated structure achieves hanging and sliding through layered slide grooves, and one track structure is compatible with two opening methods.

[0035] Refer to Figures 1-13In some embodiments, the conical insertion structure includes a fixing conical surface 40 disposed on the closure fixing member 4, a fixing member stop 41 protruding towards the closure movable member 5 on the fixing conical surface 40, the fixing member stop 41 having a stop conical surface 410 and symmetrically opened ball grooves 411 on both sides; the closure movable member 5 has a movable member conical surface 50 that fits and matches the fixing conical surface 40, the movable member conical surface 50 has a stop groove 51 for the fixing member stop 41 to fit into, the bottom surface of the stop groove 51 has a groove conical surface 510 that corresponds to and fits the stop conical surface 410, the groove conical surface 510 has a vertical plate groove 511 that communicates with the stop groove 51; ball plungers 5 are symmetrically mounted on both sides of the stop groove 51. 2. The ball head of the ball plunger 52 can be engaged in the ball groove 411 to complete the alignment and pre-tightening locking; the movable part 5 of the closure device is provided with a spring mounting plate 53, a gear 54, and two locking tongue plates 55 that can move synchronously in opposite directions; both locking tongue plates 55 are provided with straight tooth plates 550, and both straight tooth plates 550 mesh with the gear 54 to drive the two locking tongue plates 55 to extend and retract synchronously in opposite directions; one end of one locking tongue plate 55 is provided with a vertical plate 551, which extends through the vertical plate groove 511 into the stop groove 51; the other end of the locking tongue plate 55 is equipped with a return spring 56 between it and the spring mounting plate 53, and a total of two return springs 56 are arranged side by side to provide a stable elastic driving force for the two locking tongue plates 55 to retract and return to their original position.

[0036] When the track closure 3 needs to be locked, rotate the door leaf so that the door leaf and the moving rail 2 rotate synchronously towards the fixed rail 1. The fixing cone surface 40 of the closure fixing part 4 fits against the moving cone surface 50 of the closure movable part 5, and the fixing block 41 is embedded into the block groove 51 to complete the initial positioning. During the process of the fixing block 41 being embedded into the block groove 51, the fixing block 41 will contact the upright plate 551 at one end of one of the locking tongue plates 55 and push the upright plate 551 to slide to one end. At the same time, the two locking tongue plates 55 slide synchronously in opposite directions. Finally, both locking tongue plates 55 retract from the pulley grooves 61 on both sides of the closure movable part 5 into the closure movable part 5. At this time, the ball heads of the two ball plungers 52 are engaged in the ball grooves 411 to achieve pre-tight positioning, so that the closure fixing part 4 and the closure movable part 5 are locked. At this time, the moving rail 2 and the fixed rail 1 are assembled into a complete three-rail continuous track.

[0037] When the track closure 3 needs to be unlocked, rotate the door leaf in the opposite direction so that the door leaf and the moving rail 2 rotate synchronously away from the fixed rail 1. The fixing block 41 gradually exits the blocking groove 51. During this process, the ball heads of the two ball plungers 52 move out of the two ball grooves 411. In addition, the two locking tongue plates 55 extend outward synchronously in opposite directions under the pull of the return spring 56. Finally, the two locking tongue plates 55 enter the pulley grooves 61 on both sides of the closing device movable part 5, restricting the frame from sliding along the frame groove 60. The closing device fixing part 4 and the closing device movable part 5 are unlocked, the moving rail 2 can rotate away from the fixed rail 1, and the door leaf switches to a swing opening mode.

[0038] This application adopts a conical guide for precise alignment, and ball bearing pre-positioning for quick docking; the 54 gears drive the double locking tongues to move synchronously, ensuring balanced locking force and high reliability against slippage; the spring automatically resets, and the unlocking and reset are smooth, resulting in a firm overall lock that prevents the track from misaligning and coming apart during the pushing and pulling process, thus improving the stability of the door and window dual-mode switching.

[0039] In some embodiments, when the closure fixing member 4 and the closure movable member 5 are locked, the two locking tongue plates 55 retract inward and exit from the pulley grooves 61 on both sides, and the frame can slide along the frame grooves 60 on both sides to achieve the push-pull function; when the closure fixing member 4 and the closure movable member 5 are unlocked, the two locking tongue plates 55 extend outward and into the pulley grooves 61 on both sides, and limit and block the frame by the locking tongue plates 55, restricting the frame from sliding along the frame grooves 60; when locked, the locking tongue retracts to release the groove, ensuring smooth push-pull sliding of the frame; after unlocking, the locking tongue extends to lock and stop the groove, preventing the frame from running accidentally; the two working conditions are automatically switched by relying on the different strokes of the locking tongue, without the need for additional manual operation, improving the safety of the swing opening and the reliability of the structural linkage.

[0040] In some embodiments, one end of the movable member 5 of the closure is provided with a retaining edge 57, and a positioning seat 58 is installed on the retaining edge 57. A positioning shaft 58a is integrally formed on the positioning seat 58. One end of the fixing member 4 of the closure is provided with a positioning seat groove 42 that matches the positioning seat 58 and a positioning shaft groove 43 that matches the positioning shaft 58a. The positioning shaft groove 43 and the positioning seat groove 42 are interconnected. Through the double insertion and cooperation of the positioning seat 58 and the positioning seat groove 42, and the positioning shaft 58a and the positioning shaft groove 43, the fixing member 4 and the movable member 5 of the closure are precisely aligned and limited to prevent left and right deviation during insertion. Combined with the conical structure, the fast centering is achieved, further improving the locking coaxiality and splicing flatness, and enhancing the stability of track docking.

[0041] In some embodiments, each latch plate 55 is provided with an oblique guide angle 55a at its outer end. The oblique guide angle 55a guides the latch plate 55 to smoothly insert into or exit the pulley groove 61, avoiding movement jamming. This can improve the smoothness and stability of the lock's opening and closing action and extend the service life of the components.

[0042] In some embodiments, two shaft holes 59 are symmetrically provided on the movable part 5 of the closure device. The axles 54a at both ends of the gear 54 are rotatably inserted into the two shaft holes 59, respectively, to limit the axial and radial movement of the gear 54 and prevent the gear 54 from deviating or losing teeth during operation. The double shaft holes 59 of the movable part 5 of the closure device limit the axles 54a at both ends of the gear 54 to be coaxially positioned, while constraining the axial and radial displacement of the gear 54, avoiding deviating or losing teeth during operation, ensuring gear meshing accuracy, smooth and reliable transmission, reducing abnormal noise and wear, and improving the overall working stability and durability of the closure device.

[0043] In some embodiments, the movable member 5 of the closure device has a latch plate groove 55b, and two latch plates 55 are slidably assembled side by side inside the latch plate groove 55b; a spring mounting plate 53 is detachably installed between the two latch plates 55 by screws and fixedly connected to the movable member 5 of the closure device to prevent one of the latch plates 55 from loosening; a limiting plate 55c is also provided, which is detachably fixed to the outer wall of the latch plate groove 55b by screws to prevent the other latch plate 55 from loosening; by using the spring mounting plate 53 and the outer limiting plate 55c to limit the two side by side latch plates 55 in both directions, the latch plates 55 can be prevented from loosening and falling off when sliding, and the assembly structure is stable; and both limiting components are detachable, which facilitates disassembly, inspection, and replacement of parts, improving the structural reliability and convenience of later maintenance.

[0044] In some embodiments, the closure fastener 4 is detachably and fixedly connected to the fixed rail 1 by multiple screws 10, and the closure movable part 5 is detachably and fixedly connected to the moving rail 2 by multiple screws 10; this facilitates on-site installation and commissioning, subsequent disassembly and maintenance and component replacement, and also facilitates the individual replacement of parts, reducing maintenance costs.

[0045] In some embodiments, the ball plunger 52 includes a ball head 520, a compression spring 521, and a plunger 522. The two plungers 522 are threadedly connected to both sides of the movable part 5 of the closure device. The compression spring 521 and the ball head 520 are tightly fitted inside each plunger 522. The ball head 520 is kept in an outward-pushing state by the elastic force of the compression spring 521 to achieve pre-positioning engagement. The ball plunger 52 is installed with threads on both sides. The ball head 520 is pushed by the spring force to achieve elastic engagement and pre-positioning. The positioning is reliable and the locking is accurate. The threaded structure is easy to disassemble and assemble. The elastic force can stably maintain the locking effect, improve the positioning stability of the closure device, and the structure is compact and durable.

[0046] This application mainly consists of a fixed rail 1, a moving rail 2, a three-rail profile track, and a track closure device 3. The fixed rail 1 is fixed to the upper frame of the door frame, the moving rail 2 is installed on the top of the hinged door leaf, and the three rail bodies 6 are used for fixing the frame installation and hanging the sliding frame on both sides, respectively. The sliding door leaf and the screen window frame are mounted through the frame slide groove 60, the pulley slide groove 61, and the hanging part groove 62. The two types of sliding frames can be installed in interchangeable positions. The closure device consists of a fixed part connected to the fixed rail 1 and a movable part connected to the moving rail 2. The two parts are aligned by inserting with a trapezoidal conical surface structure. When the door leaf rotates to close towards the door frame... The fixed conical surface 40 and the movable conical surface 50 are in contact. The fixed stop block 41 is embedded in the stop block groove 51. The stop block pushes the vertical plate 551 at the end of the locking tongue plate 55. Under the meshing transmission of the gear 54 and the double-sided straight tooth plate 550, the two locking tongue plates 55 retract inward and exit the pulley slide groove 61, and the return spring 56 is compressed. At the same time, the steel balls of the ball plungers 52 on both sides are inserted into the ball groove 411 of the stop block to complete the pre-tightening lock. At this time, the moving and stationary rails are spliced ​​into a complete through three-rail track, and the frame can slide freely along the slide groove to realize the push-pull opening mode. The gear 54 passes through the double-sided straight tooth plate 550 of the movable part. The shaft hole 59 provides axial and radial limiting, preventing deviation and tooth disengagement during operation; the two locking tongue plates 55 are bidirectionally limited by the spring mounting plate 53 and the outer limiting plate 55c, respectively, preventing slippage; the oblique guide angle 55a at the end of the locking tongue ensures smooth extension and contraction; when the door leaf is rotated in the opposite direction to unlock, the moving rail 2 flips outward with the door leaf, the stop block exits from the stop block groove 51, and the ball plunger 52 disengages from the ball groove 411 to release the pre-position; the compressed return spring 56 pulls the locking tongue plate 55 to extend outward synchronously in the opposite direction, and the locking tongue plate 55 inserts into the sliding grooves 61 of the two side pulleys, physically blocking the sliding frame. Sliding prevents the push-pull door from running unexpectedly during the swing opening process; at this time, the closing device fixing part 4 and the moving part are completely separated, and the moving rail 2 can rotate and offset relative to the fixed rail 1 around the hinge position, and the door is switched to the swing opening mode; the whole relies on the conical surface guide for initial positioning, the ball head plunger 52 for pre-locking, the gear 54 for synchronization, the double locking tongue for mechanical locking, and the double insertion and matching of the positioning seat 58 and the positioning seat groove 42, and the positioning shaft 58a and the positioning shaft groove 43, etc., to complete the stable switching between the push-pull and swing opening modes. The screw detachable connection structure facilitates the disassembly and replacement of parts and fault repair.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] It should be noted that the terms "a," "b," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A three-rail closure assembly, comprising a fixed rail, a moving rail, and a rail closure assembly mounted at the connection point between the fixed rail and the moving rail, characterized in that: The track closure device includes a closure device fixing component that is fixedly connected to the fixed rail and a closure device movable component that is fixedly connected to the moving rail; the closure device fixing component and the closure device movable component achieve locking or unlocking through a mutually compatible conical surface plug-in structure; The bottom surfaces of the fixed rail, moving rail, closing device fixing parts, and closing device moving parts are all formed with three rails arranged side by side for mounting the frame. The rails on both sides are provided with frame sliding grooves, and the upper end of each frame sliding groove is provided with a pulley sliding groove along the length direction. When the fixed part of the closure device is locked with the movable part of the closure device, the moving rail and the fixed rail are spliced ​​together to form a smooth and continuous integral rail, which is suitable for push-pull usage mode. When the fixed part of the closure is unlocked from the movable part of the closure, the moving rail can rotate relative to the fixed rail and separate from the fixed rail, which is suitable for the swing opening mode.

2. The three-track closure assembly as described in claim 1, characterized in that: The conical insertion structure includes a fixed conical surface on the closure retainer fixing member, a fixed member stop protruding towards the closure retainer movable member on the fixed member conical surface, the fixed member stop having a stop conical surface and symmetrical ball bearing grooves on both sides; the closure retainer movable member has a movable member conical surface that fits and matches the fixed member conical surface, the movable member conical surface has a stop groove for the fixed member stop to fit into, the bottom surface of the stop groove has a groove conical surface that corresponds to and fits the stop conical surface, the groove conical surface has a vertical plate groove that penetrates the stop groove; symmetrically fitted on both sides of the stop groove are... The ball-head plunger's ball head can engage with the ball groove to complete the alignment and pre-tightening locking. The moving part of the closure device is equipped with a spring mounting plate, a gear, and two locking tongue plates that can move synchronously in opposite directions. Both locking tongue plates are equipped with straight tooth plates, which mesh with the gear to drive the two locking tongue plates to extend and retract synchronously in opposite directions. One end of one locking tongue plate is equipped with a vertical plate, which extends through the vertical plate groove into the stop groove. The other end of the locking tongue plate is equipped with a return spring between it and the spring mounting plate, providing elastic driving force for the two locking tongue plates to retract and return to their original position.

3. The three-track closure assembly as described in claim 2, characterized in that: When the closure fixture is locked to the closure mechanism, the two locking tongue plates retract inward and exit from the pulley grooves on both sides, allowing the frame to slide along the frame grooves on both sides to achieve a push-pull function. When the closure fixture is unlocked from the closure mechanism, the two locking tongue plates extend outward and into the pulley grooves on both sides, limiting and blocking the frame and restricting its sliding along the frame grooves.

4. The three-track closure assembly as described in claim 3, characterized in that: One end of the movable part of the closure device is provided with a retaining edge, and a positioning seat is installed on the retaining edge. A positioning shaft is integrally formed on the positioning seat. One end of the fixed part of the closure device is provided with a positioning seat groove that matches the positioning seat and a positioning shaft groove that matches the positioning shaft. The positioning shaft groove and the positioning seat groove are interconnected.

5. The three-track closure assembly as described in claim 4, characterized in that: Each locking tongue plate has an angled guide angle on its outer end. The angled guide angle facilitates the smooth insertion or withdrawal of the locking tongue plate from the pulley groove, preventing movement jamming.

6. The three-track closure assembly as described in claim 5, characterized in that: The movable part of the closure has two symmetrical shaft holes. The axles at both ends of the gear are rotatably inserted into the two shaft holes to limit the gear axially and radially, preventing the gear from shifting or losing teeth during operation.

7. The three-track closure assembly as described in claim 6, characterized in that: The movable part of the closure device has a locking tongue plate groove, and two locking tongue plates are slidably assembled side by side inside the locking tongue plate groove; a spring mounting plate is detachably installed between the two locking tongue plates and fixedly connected to the movable part of the closure device to prevent one of the locking tongue plates from loosening; a limiting plate is also provided, which is detachably fixed to the outer wall of the locking tongue plate groove to prevent the other locking tongue plate from loosening.

8. The three-track closure assembly as described in claim 7, characterized in that: The closing device's fixed component is detachably and fixedly connected to the fixed rail by multiple screws, and the closing device's movable component is detachably and fixedly connected to the moving rail by multiple screws.

9. The three-track closure assembly as described in claim 8, characterized in that: The ball plunger includes a ball head, a compression spring, and a plunger. The two plungers are threadedly connected to both sides of the moving part of the closure device. The compression spring and the ball head are tightly fitted inside each plunger. The ball head is kept in an outward-pushing state by the elastic force of the compression spring to achieve pre-positioning engagement.

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