Sliding door locking structure and sliding door mechanism
By concealing the lock box and lock rod inside the upper track and vertical frame, the problem of exposed lock holes or lock tongues in the open state of traditional door locks is solved, improving both aesthetics and security, while reducing production costs and maintenance requirements.
Patent Information
- Application Number
- CN202423169853.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Traditional door locks expose the side lock hole or bolt when the door is open, which affects both aesthetics and security, and looks out of place, especially in modern home and commercial environments.
Design a sliding door locking structure that hides the lock box and lock rod inside the upper track and vertical frame. The locking function is achieved by sliding the lock rod against the lock groove. Combined with components such as limit baffles, linkage parts and magnetic suction parts, stability and reliability are ensured.
It improves the aesthetics and security of the door, reduces production costs, simplifies the structure, and increases production efficiency and service life.
Smart Images
Figure CN223608341U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to door lock technology field especially relates to a sliding door locking structure and sliding door mechanism. BACKGROUND
[0002] In the field of building doors and windows, doors are widely used in various residential buildings, commercial buildings and industrial sites due to their space-saving and flexible opening advantages. As a key component of the door, the performance and design of the door lock play a crucial role in the overall user experience and safety of the door.
[0003] Most traditional door locks are installed on the side of the door. This design has many defects. From the perspective of aesthetics, since the door edge needs to be set with a concave hole to accommodate the lock cylinder structure or a protruding lock tongue to achieve the locking function, when the door is in the open state, the lock hole or lock tongue on the side will be directly exposed, which destroys the overall smooth lines of the door and affects the visual beauty inside and outside. Especially in modern homes and business environments that pursue minimalism and elegant style, this conspicuous design is particularly incongruous.
[0004] From the perspective of safety, when the door is in the open state, the lock hole or lock tongue on the side will be directly exposed, which destroys the overall smooth lines of the door and affects the visual beauty inside and outside. Especially in modern homes and business environments that pursue minimalism and elegant style, this conspicuous design is particularly incongruous. SUMMARY
[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a sliding door locking structure and sliding door mechanism. It can solve the problems of aesthetics and safety.
[0006] The technical scheme adopted by the utility model to solve the problem is:
[0007] A sliding door locking structure, comprising: a lock box, the lock box comprising a lock box assembly part and a lock slot, the lock box assembly part being used for assembly with an upper rail; a vertical frame, the vertical frame being provided with a slide rail along its length direction, the vertical frame being used for assembly with the side of a door body; a lock rod, the lock rod being slidably arranged in the slide rail, one end of the lock rod being used for adaptive plug-in connection with the lock slot, the other end of the lock rod being linked with a handle of the door body to make the lock rod extend into or separate from the lock slot.
[0008] By adopting the above scheme, the lock hole or lock tongue on the side of the door is avoided, and by hiding the lock box and lock rod and other key components inside the upper rail and vertical frame, the exposure of the lock is reduced, the safety of the door is improved, the structure of the lock is simplified, the production efficiency is improved, and the production cost is reduced.
[0009] Further, the slide rail is provided with a limiting baffle for avoiding the lock rod from being disengaged.
[0010] By adopting the above scheme, the movement track of the lock rod in the slide rail is stable and controllable, preventing the lock rod from deviating or shaking during sliding, thereby improving the reliability and durability of the locking structure and increasing the external force resistance of the lock rod.
[0011] Further, the lock rod is connected with a lock, which comprises: a first lock shell comprising a first lock shell assembly part and a first sliding groove, one end of the first sliding groove facing the lock slot, the first lock shell assembly part being used for assembly above the door body; a lock tongue linked with the linkage, the lock tongue being slidably arranged in the first sliding groove, the lock tongue being matched with the lock slot.
[0012] By adopting the above scheme, the lock can be assembled and hidden above the door body, further improving the appearance of the door body. Meanwhile, the first sliding groove is arranged to enable the lock tongue to slide therein, which not only makes the movement of the lock tongue more flexible, but also reduces the friction and wear of the lock tongue during locking and unlocking with the lock slot to some extent, being more stable and smooth compared with the linkage directly locking and unlocking with the lock slot.
[0013] Further, a linkage is arranged between the lock tongue and the lock rod, and limiting guide grooves are arranged on both sides of the slide rail of the vertical frame, and the linkage is provided with clamping arms slidably connected with the limiting guide grooves.
[0014] By adopting the above scheme, the movement track of the linkage in the slide rail is stable and controllable, preventing the linkage from deviating or shaking during sliding, thereby improving the reliability and durability of the locking structure and increasing the external force resistance of the linkage.
[0015] Further, the lock tongue is provided with a sliding groove, a first magnetic attraction member is movably connected in the sliding groove, and the first magnetic attraction member is magnetically connected with the lock slot, so that the first magnetic attraction member can slide relative to the sliding groove towards the lock slot.
[0016] By adopting the above scheme, the first magnetic attraction member can slide up and down relative to the lock tongue, solving the problem of different distances between different door bodies and upper rails, improving the adaptation range, and realizing the locking effect even if there is an installation error between the door body and the upper guide rail.
[0017] Further, the lock rod is provided with a first positioning rib, an intermediate rib and a second positioning rib arranged linearly and at intervals, the linkage is provided with a first positioning groove corresponding to the first positioning rib, and the handle is provided with a second positioning groove corresponding to the second positioning rib.
[0018] By adopting the above scheme, the first positioning rib and the first positioning groove ensure the accurate positioning and stable connection between the lock rod and the linkage, the second positioning rib and the second positioning groove ensure the accurate positioning and stable connection between the lock rod and the handle, and the middle rib improves the strength of the lock rod, and the two ends of the middle rib are in abutment with the end of the linkage and the end of the handle respectively, thereby improving the connection stability.
[0019] Further, the edge of the limiting guide groove is provided with a clamping lip plate for preventing the linkage from disengaging, and the end of the clamping arm is provided with a clamping protrusion in abutment with the clamping lip plate.
[0020] By adopting the above scheme, the existence of the clamping lip plate effectively prevents the linkage from disengaging from the limiting guide groove during sliding, and the clamping protrusion is tightly abutted on the clamping lip plate, thereby limiting the transverse movement range of the linkage and ensuring that the linkage always remains in the correct position during locking and unlocking, thereby avoiding the lock failure caused by disengagement of the linkage.
[0021] Further, the clamping protrusion is provided with sliding surfaces on both sides, and the sliding surfaces are inclined surfaces or curved surfaces.
[0022] By adopting the above scheme, the inclined surface or curved surface design of the sliding surface can reduce the contact area between the linkage and the clamping lip plate during sliding, thereby reducing the friction and wear degree and improving the smoothness; the design of the sliding surface can also play a guiding role to help the linkage maintain the correct direction during sliding.
[0023] Further, the lock tongue is provided with an extension arm in the direction of the lock rod, and the extension arm is clamped with one end of the lock rod.
[0024] By adopting the above scheme, the connection stability of the lock tongue and the lock rod is improved, and both of them maintain synchronous movement.
[0025] A sliding door mechanism comprises an upper track, a door body with a handle, and a door body locking structure, the lock box assembly part is installed in the upper track, and the handle can drive the lock rod to slide up and down along the slide rail, so that the lock rod extends into or away from the lock slot.
[0026] By adopting the above scheme, a door body mechanism with a hidden locking mechanism is realized, which can improve the appearance and the overall locking structure is simple and convenient to operate.
[0027] In summary, the sliding door locking structure and the sliding door mechanism have the following technical effects:
[0028] 1. By hiding key components such as lock box and lock rod inside the upper rail and vertical frame, the lock hole or lock tongue on the side of the door body is avoided. This design eliminates the protruding feeling of the traditional door body lock in the open state, maintains the overall smooth lines of the door body, and improves the visual beauty inside and outside;
[0029] 2. The hidden locking structure reduces the exposure of the lock, reduces the risk of malicious damage or prying. The lock box assembly part is assembled with the upper rail, and the lock rod is matched with the lock slot. The close cooperation of this structure also improves the reliability and stability of the lock, and further enhances the security of the door body;
[0030] 3. The design of the hidden locking structure is relatively simple, reducing unnecessary parts and complex assembly process. This helps to reduce production cost and improve production efficiency. The simplified structure also means less maintenance requirement and longer service life, saving the user's later maintenance cost. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the present application;
[0032] Figure 2 It is a partial explosion structure schematic diagram of an embodiment of the present application;
[0033] Figure 3 It is an enlarged view of A area in Figure 2
[0034] Figure 4 It is a door body locking overall drive structure schematic diagram of an embodiment of the present application;
[0035] Figure 5 It is a lock box structure schematic diagram of an embodiment of the present application;
[0036] Figure 6 It is a lock disassembly structure diagram of an embodiment of the present application;
[0037] Figure 7 It is a linkage connecting exploded structure schematic diagram of an embodiment of the present application;
[0038] Figure 8 It is a lock rod and handle exploded structure schematic diagram of an embodiment of the present application;
[0039] Figure 9 It is a lock box and lock alignment structure schematic diagram of an embodiment of the present application.
[0040] Wherein, the reference signs mean as follows: 1, lock box; 11, lock box assembly part; 111, first assembly hole; 112, first fixing piece; 12, lock slot; 2, linkage; 21, clamping arm; 211, clamping protrusion; 212, sliding surface; 22, first alignment slot; 23, clamping block; 3, vertical frame; 31, sliding rail; 311, limiting baffle; 32, limiting guide slot; 321, clamping lip plate; 33, vertical frame cover body; 4, lock rod; 41, first alignment rib; 42, middle rib; 43, second alignment rib; 5, lock; 51, first lock shell; 511, first lock shell assembly part; 512, second fixing piece; 513, first sliding groove; 514, second assembly hole; 52, lock tongue; 521, sliding groove; 522, first magnetic attraction piece; 523, extension arm; 524, bayonet; 6, door body; 61, handle; 611, second alignment slot; 612, push sliding block; 7, upper rail. DETAILED DESCRIPTION
[0041] In order to better understand and implement, the following will be combined with the drawings of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described and discussed, obviously, only a part of the utility model described here, not all examples, based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.
[0042] In order to facilitate the understanding of the embodiments of the utility model, the following will be combined with the drawings to further explain and describe specific embodiments, and each embodiment does not constitute the limitation of the embodiments of the utility model.
[0043] In the description of the utility model, it is necessary to explain that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model.
[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the utility model.
[0045] The embodiments of the utility model refer to Figures 1-9As shown, a sliding door locking structure is disclosed, comprising a lock box 1, a vertical frame 3 and a lock rod 4, the lock box 1 comprises a lock box assembly part 11 and a lock slot 12, the lock box assembly part 11 is used for assembly with the upper track 7, specifically, the lock box assembly part 11 is provided with a first assembly hole 111, a first fixing member 112 is arranged in the first assembly hole 111, optionally, the first fixing member 112 includes but is not limited to a screw, a screw rod or a bolt, preferably, the first fixing member 112 adopts a screw, which is inserted upward from the lock slot 12 and locked and fixed with the upper track 7. The lock rod 4 is matched with the lock slot 12; specifically, the projection of the lock rod 4 on the horizontal plane does not exceed the projection range of the lock slot 12 on the horizontal plane, which ensures that the lock rod 4 can extend into the lock slot 12. The vertical frame 3 is used for assembly with the side edge of the door body 6, the vertical frame 3 is provided with a sliding rail 31 along its length direction, optionally, the vertical frame 3 is also provided with a vertical frame cover body 33 to cover the sliding rail 31, which plays a role in hiding the sliding rail 31, avoiding artificial damage, and also plays a waterproof and dustproof effect, the lock rod 4 is slidably arranged in the sliding rail 31, and one end is used for matched insertion with the lock slot 12, and the other end is linked with the handle 61 of the door body 6 to make the lock rod 4 extend into or separate from the lock slot 12. By this setting, it avoids setting a lock hole or a lock tongue 52 on the side edge of the door body 6, hides the key components such as the lock box 1 and the lock rod 4 in the upper track 7 and the vertical frame 3, reduces the exposure of the lock 5, improves the safety of the door body 6, simplifies the structure of the lock 5, improves the production efficiency and reduces the production cost.
[0046] In some embodiments, in order to improve the operation stability of the lock rod 4 and improve the accuracy of inserting the lock slot 12, it is necessary to set a guide for it, optionally, a limiting baffle 311 for avoiding the lock rod 4 from separating is arranged on the sliding rail 31. The lock rod 4 is prevented from deviating or shaking during sliding, thereby improving the reliability and durability of the locking structure and increasing the external force resistance of the lock rod 4.
[0047] In some embodiments, in order to improve the operation stability of the lock rod 4 and improve the accuracy of inserting the lock slot 12, a lock 5 can be added, the lock 5 comprising a first lock shell 51 and a lock tongue 52, the first lock shell 51 comprising a first lock shell assembly part 511 and a first sliding groove 513, one end of the first sliding groove 513 facing the lock slot 12, the lock tongue 52 sliding in the first sliding groove 513 to provide guidance for the lock tongue 52, specifically, the first lock shell assembly part 511 is used to assemble above the door body 6, preferably, a second fixing member 512 is arranged in the second assembly hole 514, optionally, the second fixing member 512 includes but is not limited to a screw, a screw rod or a bolt, preferably, the second fixing member 512 adopts a screw, the screw is inserted from one side of the first lock box 1 and inclined downward, so that the screw is fixed with the upper frame of the door body 6. The lower end of the lock tongue 52 is fixed with the lock rod 4, so that the lock tongue 52 replaces the lock rod 4 to complete the locking function with the lock slot 12. Therefore, the lock tongue 52 needs to be matched with the lock slot 12, specifically, the projection of the lock tongue 52 on the horizontal plane does not exceed the projection range of the lock slot 12 on the horizontal plane, so that the lock tongue 52 can be inserted into the lock slot 12. By setting this way, the lock 5 can be assembled and hidden above the door body 6, improving the appearance of the door body. At the same time, the setting of the first sliding groove 513 makes the lock tongue 52 can slide in it, this design not only makes the movement of the lock tongue 52 more flexible, but also can reduce the friction and wear of the lock tongue 52 to a certain extent in the process of locking and opening with the lock slot 12, compared with the lock rod 4 directly locking and opening with the lock slot 12, it is more stable and smooth.
[0048] Optionally, in order to improve the linkage stability between the lock tongue 52 and the lock rod 4, a linkage member 2 is further arranged between the lock tongue 52 and the lock rod 4, and the sliding rail 31 of the vertical frame 3 is provided with limiting guide grooves 32 on both sides, and the linkage member 2 is provided with clamping arms 21 which are in sliding connection with the limiting guide grooves 32. The movement track of the linkage member 2 in the sliding rail 31 is stable and controllable, and the linkage member 2 is prevented from deviating or shaking during sliding, thereby improving the reliability and durability of the locking structure and increasing the external force resistance of the linkage member 2. Preferably, the edge of the limiting guide groove 32 is provided with a clamping lip plate 321 which prevents the linkage member 2 from disengaging, and the end of the clamping arm 21 is provided with a clamping protrusion 211 which abuts against the clamping lip plate 321. The existence of the clamping lip plate 321 effectively prevents the linkage member 2 from disengaging from the limiting guide groove 32 during sliding, and the clamping protrusion 211 abuts against the clamping lip plate 321 tightly, thereby limiting the transverse movement range of the linkage member 2 and ensuring that the linkage member 2 always remains in the correct position during locking and unlocking, thereby avoiding the failure of the lock 5 due to the disengagement of the linkage member 2. Optionally, the clamping protrusion 211 is provided with sliding surfaces 212 on both sides, and the sliding surfaces 212 are inclined surfaces or curved surfaces. The design of the inclined surfaces or curved surfaces can reduce the contact area between the linkage member 2 and the clamping lip plate 321 during sliding, thereby reducing the friction and wear degree and improving the smoothness. The design of the sliding surfaces 212 can also play a guiding role and help the linkage member 2 maintain the correct direction during sliding. The sliding surfaces 212 make the linkage member 2 detachable from the sliding rail 31, which is convenient for replacement and does not require disassembling the vertical frame 3 to remove the linkage member 2 from the end of the vertical frame 3, thereby greatly improving the maintenance efficiency and reducing the maintenance cost.
[0049] Optionally, the connection between the linkage member 2 and the lock tongue 52 includes but is not limited to clamping, screwing or bonding. In this embodiment 1, the lock tongue 52 is provided with an extension arm 523 below, the extension arm 523 is provided with a bayonet 524, and the upper end of the linkage member 2 is provided with a clamping block 23 which faces the bayonet 524. When the clamping block 23 of the linkage member 2 is inserted into the bayonet 524, the vertical frame cover 33 is covered on one side of the sliding rail 31 of the vertical frame 3, which can realize the effect of closing the sliding rail 31 and prevent the linkage member 2 from disengaging from the extension arm 523.
[0050] The connection between the linkage 2 and the lock rod 4 includes but is not limited to clamping, screwing or bonding. In this embodiment 1, the lock rod 4 is provided with a linear and spaced first positioning rib 41, an intermediate rib 42 and a second positioning rib 43 on one side of the linkage 2. The linkage 2 is provided with a first positioning groove 22 corresponding to the first positioning rib 41. When the first positioning groove 22 of the linkage 2 is aligned with the first positioning rib 41, the vertical frame cover 33 is placed on one side of the sliding rail 31 of the vertical frame 3, so as to achieve the effect of closing the sliding rail 31 and avoiding the disconnection between the linkage 2 and the lock rod 4.
[0051] The connection between the lock rod 4 and the handle 61 includes but is not limited to clamping, screwing or bonding. In this embodiment 1, the handle 61 includes a sliding block 612 which can drive the handle 61 to slide along the length direction of the vertical frame 3. The handle 61 is provided with a second positioning groove 611 corresponding to the second positioning rib 43. When the second positioning groove 611 of the handle 61 is aligned with the second positioning rib 43, the vertical frame cover 33 is placed on one side of the sliding rail 31 of the vertical frame 3, so as to achieve the effect of closing the sliding rail 31 and avoiding the disconnection between the handle 61 and the lock rod 4. The second positioning rib 43 and the second positioning groove 611 ensure the accurate positioning and stable connection between the lock rod 4 and the handle 61. The intermediate rib 42 improves the strength of the lock rod 4. The two ends of the intermediate rib 42 respectively abut against the end of the linkage 2 and the end of the handle 61, so as to improve the connection stability.
[0052] Optionally, the handle 61 can be slidably arranged on the sliding rail 31 or the limiting guide groove 32. The sliding block 612 can slide along the longitudinal direction of the door body, allowing the user to directly operate the sliding block 612 to drive the handle 61 to move. The handle 61 can smoothly drive the linkage 2 to move, so as to achieve the locking and opening of the door body 6.
[0053] In some embodiments, in order to solve the problem of locking difficulty caused by different assembly distances between the different door bodies 6 and the upper rail 7, a sliding groove 521 is arranged on the lock tongue 52, a first magnetic attraction member 522 is movably connected in the sliding groove 521, the first magnetic attraction member 522 is magnetically attracted to the lock slot 12, and the first magnetic attraction member 522 can slide relative to the sliding groove 521 to the direction close to the lock slot 12. Preferably, the first magnetic attraction member 522 is selected as a magnet, which can be magnetically attracted to the first fixed member 112 in the lock slot 12. When the first fixed member 112 cannot be magnetically attracted, a second magnetic attraction member can be additionally arranged in the lock slot 12. The second magnetic attraction member can be a magnet or a metal member that can be attracted by a magnet. Since the first magnetic attraction member 522 can slide up and down relative to the lock tongue 52, the problem of different distances between the different door bodies 6 and the upper rail 7 is solved, the adaptation range is improved, and the locking effect can still be achieved even if there is an installation error between the door body 6 and the upper rail. It should be noted that the first magnetic attraction member 522 needs to be arranged to be unable to completely separate from the sliding groove 521, so that when the user operates the handle 61 to slide the sliding block 612 downward, the magnetic attraction member can be brought downward to contact the magnetic attraction effect, thereby avoiding unlocking. Therefore, in some embodiments, the length of the first magnetic attraction member 522 extending out of the sliding groove 521 is usually adjustable, and the adjustment mode includes but is not limited to screw limiting. The present embodiment is not limited in particular.
[0054] The utility model also relates to a kind of sliding door mechanism, including upper rail 7, door body 6 with handle 61 and door body 6 locking structure, the lock box assembly part 11 is installed in the upper rail 7, the handle 61 can drive the lock bar 4 slide up and down along slide rail 31, to make the lock bar 4 enter or away from the lock slot 12. Thus a kind of door body 6 mechanism of hidden locking mechanism can be realized, can improve aesthetic quality, simultaneously have the advantages that overall locking structure is simple, easy to operate.
[0055] In conclusion, the sliding door locking structure and door body 6 mechanism provided by the utility model have the following technical effects:
[0056] 1. By hiding the lock box 1 and the lock bar 4 and other key components inside the upper rail 7 and the vertical frame 3, the lock hole or the lock tongue 52 is avoided to be arranged on the side edge of the door body 6. This design eliminates the conspicuousness of the side edge lock hole or the lock tongue 52 of the traditional door body 6 in the open state, maintains the overall smooth lines of the door body, and thus improves the visual aesthetics indoors and outdoors.
[0057] 2. The hidden locking structure reduces the exposure of the lock 5, reduces the risk of being maliciously damaged or pried open. The lock box assembly part 11 is assembled with the upper rail 7, and the lock bar 4 is matched with the lock slot 12. The close cooperation of this structure improves the reliability and stability of the locking, and further enhances the security of the door body 6.
[0058] 3. The design of the hidden locking structure is relatively simple, reducing unnecessary components and complex assembly process. This helps to reduce production cost and improve production efficiency. The simplified structure also means less maintenance requirement and longer service life, saving the user the cost of later maintenance.
[0059] The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above-mentioned embodiments, and also include technical solutions composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.
Claims
1. A sliding door locking structure, characterized in that, The utility model relates to a lock box (1) is provided with the lock slot (12) and the lock rod (4), the lock rod (4) is connected with the lock (5), the lock (5) includes the first lock shell (51) and the lock tongue (52), the lock tongue (52) is fixed with the one end of the lock rod (4), the lock tongue (52) is provided with the sliding groove (521) and the first magnetic attraction piece (522), the first magnetic attraction piece (522) is connected with the lock slot (12) magnetic attraction, the first magnetic attraction piece (522) can be relative to the sliding groove (521) to the direction of the lock slot (12) close to the sliding of the lock tongue (52) is provided with the sliding groove (521) and the first magnetic attraction piece (522), the first magnetic attraction piece (522) is connected with the lock slot (12) magnetic attraction, the first magnetic attraction piece (522) can be relative to the sliding groove (521) to the direction of the lock slot (12) close to the sliding of the lock tongue (52). The utility model relates to a lock box (1) is provided with the lock slot (12) and the lock rod (4), the lock rod (4) is connected with the lock (5), the lock (5) includes the first lock shell (51) and the lock tongue (52), the lock tongue (52) is fixed with the one end of the lock rod (4), the lock tongue (52) is provided with the sliding groove (521) and the first magnetic attraction piece (522), the first magnetic attraction piece (522) is connected with the lock slot (12) magnetic attraction, the first magnetic attraction piece (522) can be relative to the sliding groove (521) to the direction of the lock slot (12) close to the sliding of the lock tongue (52). 2. The push-pull door locking structure according to claim 1, wherein 3. The push-and-pull door locking structure according to claim 1 or 2, characterized in that, 4. The push-and-pull door locking structure according to claim 3, wherein 5. The push-and-pull door locking structure according to claim 3, wherein 6. The push-and-pull door locking structure according to claim 4, wherein 7. The push-and-pull door locking structure according to claim 4, wherein 8. The push-and-pull door locking structure according to claim 7, wherein 9. The push-and-pull door locking structure according to claim 3, wherein 10. A sliding door mechanism, characterized in that The push-pull door locking structure comprises an upper rail (7), a door body (6) with a handle (61), and a locking structure according to any one of claims 1-9, wherein the locking box assembly part (11) is installed in the upper rail (7), and the handle (61) can drive the locking rod (4) to slide up and down along the sliding rail (31) so that the locking rod (4) extends into or away from the locking groove (12).