Unlocking mechanism of sliding door

Abstract

The utility model discloses an unlocking mechanism of a sliding door, which comprises a door lock mechanism comprising a lock shell and a lock box, the lock shell is provided with a lock tongue, and the lock box is provided with a lock groove; the inner door handle is provided with a first containing groove and a first unlocking piece, and the first containing groove is provided with a first operation hole; the outer door handle is provided with a second containing groove and a second unlocking piece, and the second containing groove is provided with a second operation hole; the linkage piece comprises a first connecting part, a second connecting part and a triggering part, the first connecting part is fixedly connected with the first unlocking piece, the second connecting part is fixedly connected with the spring bolt, the first unlocking piece, the linkage piece and the spring bolt move synchronously, and the triggering part abuts against the lower portion of the second unlocking piece. The second unlocking piece is arranged in the second through hole and is hidden in the second through hole in a normal state, in an emergency, an external person can stretch into the second through hole through a tool such as a crowbar and operate the second unlocking piece to move downwards, the second unlocking piece can drive the spring bolt to slide downwards and contract, and therefore the sliding door is unlocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sliding door lock technical field especially relates to a sliding door unlocking mechanism. BACKGROUND

[0002] Sliding door as one of the door classes widely used in modern architecture, with its space saving, opening flexible characteristics, is favored by all kinds of residential, commercial buildings and industrial sites. In order to improve the safety of sliding door, usually set up door lock mechanism on the door body, to ensure that when needed can effectively prevent unauthorized access.

[0003] In the existing sliding door lock design, in order to facilitate the user from the inside of the door to carry out the unlocking operation, usually set up unlocking structure on the inside handle. This design can meet the needs of users under normal circumstances, so that users can easily open the sliding door from the inside.

[0004] However, this design also has certain security risks. Because the handle on the outside of the sliding door usually will not set up unlocking structure, which means that in emergency situations, such as fire, earthquake and other accidents in the house, external personnel may not be able to open the sliding door from the outside in time for rescue, which may cause serious consequences. SUMMARY

[0005] In order to overcome at least one of the defects described in the prior art, the utility model provides a sliding door unlocking mechanism. Can solve the problem of opening the door from the outside of the sliding door in emergency situations.

[0006] The utility model discloses a technical scheme adopted to solve the problem is:

[0007] A sliding door unlocking mechanism, comprising: door lock mechanism, the door lock mechanism includes lock shell and lock box, the lock shell is equipped with the lock tongue that can slide out upwards, the lock box is provided with the lock slot towards the lock tongue;Inside door handle, the inside door handle is provided with first accommodating groove and first unlocking piece, the first unlocking piece is movably arranged in the first accommodating groove, the first accommodating groove is provided with first operation hole, the first unlocking piece extends from the first operation hole;Outside door handle, the outside door handle is provided with second accommodating groove and second unlocking piece, the second unlocking piece is movably arranged in the second accommodating groove, the second accommodating groove is provided with second operation hole, the second unlocking piece is hidden in the second operation hole;Linkage, the linkage includes first connecting part, second connecting part and trigger part, the first connecting part is fixedly connected with the first unlocking piece, the second connecting part is fixedly connected with the lock tongue, the first unlocking piece, linkage and the lock tongue synchronous movement, the trigger part is abutted below the second unlocking piece, for when the second unlocking piece is driven to move downwardly when the second unlocking piece slides downwardly.

[0008] By adopting the above scheme, by setting the second unlocking piece on the outer door handle, and hiding in the second through hole in the normal state, in an emergency, an external person can insert a tool such as a crowbar from the second through hole and operate the second unlocking piece to move downward, and the second unlocking piece will drive the lock tongue to slide downward and retract, thereby unlocking the sliding door.

[0009] Further, a first limiting shell is arranged between the first accommodating groove and the first unlocking piece, the first limiting shell comprising: a first assembly part fixedly connected with the inner door handle; a first sliding cavity in which the first unlocking piece is slidably arranged; and a first reset piece arranged between the first sliding cavity and the first unlocking piece, for limiting the first unlocking piece at one end of the first sliding cavity.

[0010] By adopting the above scheme, the first unlocking piece can automatically return to the initial position after being subjected to external force, thereby preparing for the next unlocking operation, the first reset piece limits the first unlocking piece to avoid the problem of shaking after sliding to a certain extent, and the first sliding cavity provides a clear longitudinal sliding path for the first unlocking piece.

[0011] Further, one end of the first limiting shell is provided with a first through hole in communication with the first operation hole, and the other end of the first limiting shell is provided with a third through hole, the first unlocking piece comprising a first sliding main body, a first driving end and a first trigger end connected integrally, the first driving end extending out of the third through hole and being fixed with the first connecting part, and the first trigger end extending out of the first through hole.

[0012] By adopting the above scheme, when the inner door handle is operated, the first driving end will drive the linkage to act, thereby realizing the unlocking or locking function of the door lock, and the first trigger end is more conducive to being operated by the user.

[0013] Further, the first trigger end is connected with a handheld piece, and the handheld piece is exposed outside the first operation hole of the inner door handle.

[0014] By adopting the above scheme, the user can directly see and touch the handheld piece, so that the user can more intuitively and conveniently find and operate the handheld piece when operating the door lock.

[0015] Further, a first limiting plate is arranged between the first sliding main body and the first trigger end, the area of the first limiting plate being greater than the area of the first through hole, and the first limiting plate sliding along the inner wall or the outer wall of the first sliding cavity; and a second limiting plate is arranged between the first sliding main body and the first driving end, the area of the second limiting plate being greater than the area of the third through hole, and the second limiting plate sliding along the inner wall or the outer wall of the first sliding cavity.

[0016] By adopting the above scheme, additional stability and guidance are provided for the first unlocking piece, and the first trigger end and the first driving end are prevented from accidentally falling out of the through hole during sliding.

[0017] Further, a second limiting shell is arranged between the second accommodating groove and the second unlocking piece, the second limiting shell comprising: a second assembly part fixedly connected with the outer door handle; a second sliding cavity in which the second unlocking piece is slidably arranged; and a second reset piece arranged between the second sliding cavity and the second unlocking piece, for limiting the second unlocking piece at one end of the second sliding cavity.

[0018] By adopting the above scheme, the second sliding cavity provides a clear sliding path for the second unlocking piece, limiting the range and direction of its movement, and the second reset piece can provide a certain limiting effect for the unlocking piece, so that it can remain stable when moving to the locking end and cannot be unlocked by mistake.

[0019] Further, one end of the second limiting shell is provided with a second through hole in communication with the second operation hole, and the other end of the second limiting shell is provided with a fourth through hole, the second unlocking piece comprising a second sliding main body, a second driving end and a second trigger end connected integrally, the second trigger end extending into the second through hole and not protruding out of the second operation hole, and the second driving end extending out of the fourth through hole for abutting against the trigger part.

[0020] By adopting the above scheme, the user will not touch and operate the second unlocking piece when opening or closing the door in normal state, and a crowbar or other tool can be inserted into the second through hole to operate the second trigger end, reducing the possibility of misoperation and improving the safety of operation.

[0021] Further, a third limiting plate is arranged between the second sliding main body and the second trigger end, the area of the third limiting plate being greater than the area of the second through hole, and the third limiting plate sliding along the inner wall or the outer wall of the second sliding cavity; and a fourth limiting plate is arranged between the second sliding main body and the second driving end, the area of the fourth limiting plate being greater than the area of the fourth through hole, and the fourth limiting plate sliding along the inner wall or the outer wall of the second sliding cavity.

[0022] By adopting the above scheme, the third limiting plate and the fourth limiting plate limit the movement range of the second trigger end and the second driving end respectively, providing a clear sliding path and guidance to prevent them from deviating from the predetermined trajectory during sliding. The third limiting plate ensures that the second trigger end will not accidentally extend out of the second through hole, and the fourth limiting plate prevents the second driving end from extending too much or being damaged when subjected to external force.

[0023] Further, the first sliding cavity upper cover of the inner door handle is provided with a first cover body, and the second sliding cavity upper cover of the outer door handle is provided with a second cover body.

[0024] By adopting the above scheme, the first cover body and the second cover body can effectively block dust, dirt and other impurities from entering the inside of the sliding cavity. This helps to keep the sliding cavity clean and prevents sliding from being difficult or malfunctioning due to impurity accumulation; when internal components need to be repaired or replaced, the first cover body and the second cover body can be easily removed without damaging the entire door lock structure, and the wear condition of components such as the sliding main body and the return member can be directly observed, so that maintenance measures can be taken in a timely manner.

[0025] Further, the trigger part of the linkage has a longitudinal height smaller than that of the second connecting part, so as to reserve a movement space for the second unlocking part.

[0026] By adopting the above scheme, since the longitudinal height of the trigger part is small, no collision occurs when both are in the reset state, and the first unlocking part does not contact the second unlocking part during the unlocking process, achieving independent unlocking. The second unlocking part drives the first unlocking part to unlock during the unlocking process, simplifying the unlocking complexity and improving the efficiency and convenience of the unlocking operation.

[0027] In summary, the push-pull door unlocking mechanism has the following technical effects:

[0028] 1. In an emergency situation, such as a fire or an earthquake in the house, an external person can insert a tool such as a crowbar into the second through hole of the outer door handle and operate the second unlocking part to move downward. This design enables external personnel to open the push-pull door from the outside in time without damaging the door lock, thereby improving safety in emergency situations;

[0029] 2. The first unlocking part is arranged on the inner door handle, and the user can easily perform unlocking operation from the inside. This design maintains the convenience of the door lock in daily use, enabling the user to quickly open the push-pull door. The second unlocking part on the outer door handle is hidden in the second through hole in normal state, without damaging the overall aesthetics of the door lock. This design meets the rescue needs in emergency situations, while maintaining the cleanliness and aesthetics of the door lock in daily use;

[0030] 3. The first unlocking part, the linkage and the lock tongue can move synchronously, thereby achieving smooth unlocking of the door lock, so that the entire unlocking mechanism can meet the unlocking needs in emergency situations while maintaining compactness. The second unlocking part of the outer door handle can operate the first unlocking part to move downward, avoiding the design of a more complex structure, and saving structural space. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a three-dimensional structure schematic view of the embodiment of the utility model;

[0032] Figure 2 It is Figure 1 It is a zoomed view of A area in the middle;

[0033] Figure 3 It is Figure 1 It is a zoomed view of B area in the middle;

[0034] Figure 4 It is an assembly structure schematic view of the inner door handle and the outer door handle of the embodiment of the utility model;

[0035] Figure 5 It is a partial exploded schematic view of the inner door handle and the outer door handle of the embodiment of the utility model;

[0036] Figure 6 It is a partial exploded schematic view of the inner door handle and the outer door handle of the embodiment of the utility model;

[0037] Figure 7 It is an exploded structure schematic view of the first unlocking piece of the embodiment of the utility model;

[0038] Figure 8 It is an exploded structure schematic view of the second unlocking piece of the embodiment of the utility model;

[0039] Figure 9 It is an exploded structure schematic view of the door lock mechanism of the embodiment of the utility model.

[0040] Wherein, the meaning of the reference sign is as follows: 1, door lock mechanism; 11, lock shell; 111, lock tongue; 112, magnetic attraction piece; 12, lock box; 121, lock groove; 13, magnet; 2, transmission piece; 3, inner door handle; 31, first accommodating groove; 311, first operation hole; 32, first unlocking piece; 321, first sliding main body; 322, first driving end; 323, first trigger end; 324, first limiting plate; 325, second limiting plate; 4, outer door handle; 41, second accommodating groove; 411, second operation hole; 42, second unlocking piece; 421, second sliding main body; 422, second driving end; 423, second trigger end; 424, third limiting plate; 425, fourth limiting plate; 426, reset piece accommodating cavity; 427, limiting column; 5, linkage piece; 51, first connecting part; 52, second connecting part; 53, trigger part; 6, first limiting shell; 61, first assembly part; 62, first sliding cavity; 621, first cover body; 63, first reset piece; 64, first through hole; 65, third through hole; 7, second limiting shell; 71, second assembly part; 72, second sliding cavity; 721, second cover body; 73, second reset piece; 74, second through hole; 75, fourth through hole; 76, spring lower baffle; 8, handheld piece. DETAILED DESCRIPTION

[0041] For better understanding and implementation, the technical solutions in the embodiments of the present application will be described and discussed clearly and completely in conjunction with the drawings of the present application. Obviously, only some examples of the present application are described here, and not all examples. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0042] In order to facilitate the understanding of the embodiments of the present application, the following will be further explained and described with specific examples as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present application.

[0043] In the description of the present application, it should be pointed out that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0045] Embodiment 1 of the present application refers to Figures 1-9As shown, a sliding door unlocking mechanism is disclosed, comprising a door lock mechanism 1, an inner door handle 3, an outer door handle 4 and a linkage 5, the door lock mechanism 1 comprises a lock shell 11 and a lock box 12, the lock shell 11 is provided with a lock tongue 111 which can slide out upwardly, the lock box 12 is provided with a lock groove 121 facing the lock tongue 111, specifically, the lock shell 11 is assembled in the door frame above the sliding door, the lock box 12 is assembled in the upper sliding rail above the sliding door, when the lock tongue 111 extends into the lock groove 121, the sliding door can be locked, and the locking operation is achieved. Preferably, the lock tongue 111 of the door lock mechanism 1 is provided with a magnetic attraction piece 112 which can move upwardly, when the magnetic attraction piece 112 is opposite to the lock groove 121, the magnetic attraction piece 112 of the lock tongue 111 can be magnetically attracted into the lock groove 121 to complete the locking operation, optionally, the magnetic piece and the lock groove 121 can be a magnet 13 and an iron block, or a magnet 13 and a magnet 13. The door lock mechanism 1 is arranged above the sliding door, which can avoid the concave lock groove 121 or the convex lock tongue 111 on the side wall of the sliding door, improve the appearance, avoid accidental touch, and thus improve the service life. The inner door handle 3 is provided with a first accommodating groove 31 and a first unlocking piece 32, the first unlocking piece 32 is movably arranged in the first accommodating groove 31, the first accommodating groove 31 is provided with a first operation hole 311, the first unlocking piece 32 extends out of the first operation hole 311, the outer door handle 4 is provided with a second accommodating groove 41 and a second unlocking piece 42, the second unlocking piece 42 is movably arranged in the second accommodating groove 41, the second accommodating groove 41 is provided with a second operation hole 411, the second unlocking piece 42 is hidden in the second operation hole 411, the linkage 5 comprises a first connecting part 51, a second connecting part 52 and a trigger part 53, the first connecting part 51 is fixedly connected with the first unlocking piece 32, the second connecting part 52 is fixedly connected with the lock tongue 111, in practice, the lock tongue 111 is connected with the second connecting part 52 through a transmission member 2, the transmission member 2 can be a pull rope or a pull rod, so that the first unlocking piece 32, the linkage 5 and the lock tongue 111 move synchronously, the trigger part 53 abuts below the second unlocking piece 42, for driving the second unlocking piece 42 to move downwardly when the second unlocking piece 42 slides downwardly, by arranging the second unlocking piece 42 on the outer door handle 4 and hiding it in the second through hole 74 in the normal state, in an emergency, an external person can insert a tool such as a crowbar into the second through hole 74 and operate the second unlocking piece 42 to move downwardly, the second unlocking piece 42 will drive the lock tongue 111 to slide downwardly and retract, thereby unlocking the sliding door, since the trigger part 53 abuts below the second unlocking piece 42, the outer door handle 4 cannot operate the trigger part 53 to move upwardly, and the door body cannot be locked from outside, which avoids locking people in the house from outside, and improves the safety of the internal personnel.

[0046] It should be noted that the trigger part 53 of the linkage 5 has a longitudinal height smaller than that of the second connecting part 52, so as to reserve a moving space for the second unlocking part 42. Since the trigger part 53 has a small longitudinal height, no collision occurs when both are in the reset state, and the first unlocking part 32 does not contact the second unlocking part 42 during the unlocking process, thereby realizing independent unlocking. The second unlocking part 42 will drive the first unlocking part 32 to unlock during the unlocking process, thereby simplifying the unlocking complexity and improving the efficiency and convenience of the unlocking operation.

[0047] In some embodiments, in order to improve the working stability of the first unlocking part 32 in the first accommodating groove 31, a first limiting shell 6 is arranged between the first accommodating groove 31 and the first unlocking part 32. The first limiting shell 6 includes a first assembly part 61, a first sliding cavity 62 and a first reset part 63. The first assembly part 61 is fixedly connected with the inner door handle 3, the first unlocking part 32 is slidably arranged in the first sliding cavity 62, the first sliding cavity 62 provides a clear longitudinal sliding path for the first unlocking part 32, and the first reset part 63 is arranged between the first sliding cavity 62 and the first unlocking part 32, for limiting the first unlocking part 32 at one end of the first sliding cavity 62 to avoid shaking. After being subjected to an external force, the first unlocking part 32 can automatically return to the initial position, thereby preparing for the next unlocking operation. Similarly, in order to improve the working stability of the second unlocking part 42 in the second accommodating groove 41, a second limiting shell 7 is arranged between the second accommodating groove 41 and the second unlocking part 42. The second limiting shell 7 includes a second assembly part 71, a second sliding cavity 72 and a second reset part 73. The second assembly part 71 is fixedly connected with the outer door handle 4, the second unlocking part 42 is slidably arranged in the second sliding cavity 72, and the second reset part 73 is arranged between the second sliding cavity 72 and the second unlocking part 42, for limiting the second unlocking part 42 at one end of the second sliding cavity 72 to avoid shaking. The second sliding cavity 72 provides a clear sliding path for the second unlocking part 42, limits the range and direction of movement of the second unlocking part 42, and the second reset part 73 can provide a certain abutting force to overcome the external force and avoid accidental unlocking.

[0048] Preferably, in the first embodiment, the first assembly part 61 is an assembly plate extending to both sides of the first limiting shell 6, which can be assembled to the outside of the first limiting shell 6 by screws, and at the same time, the first limiting shell 6 is fixed in the first accommodating groove 31. Similarly, the second assembly part 71 is an assembly plate extending to both sides of the second limiting shell 7, which can be assembled to the outside of the second limiting shell 7 by screws, and at the same time, the second limiting shell 7 is fixed in the second accommodating groove 41. One end of the first limiting shell 6 is provided with a first through hole 64 communicating with the first operation hole 311, and the other end of the first limiting shell 6 is provided with a third through hole 65. The first unlocking part 32 includes a first sliding main body 321, a first driving end 322 and a first trigger end 323 connected integrally. The first driving end 322 protrudes from the third through hole 65 and is fixed with the first connecting part 51. The first trigger end 323 protrudes from the first through hole 64. When the inner door handle 3 is operated, the first driving end 322 drives the linkage 5 to move, thereby realizing the unlocking or locking function of the door lock, and the first trigger end 323 is more conducive to being operated by the user. In order to increase the area of the first trigger end 323 in contact with the hand, one end of the second limiting shell 7 is provided with a second through hole 74 communicating with the second operation hole 411, and the other end of the second limiting shell 7 is provided with a fourth through hole 75. The second unlocking part 42 includes a second sliding main body 421, a second driving end 422 and a second trigger end 423 connected integrally. The second trigger end 423 extends into the second through hole 74 and does not protrude from the second operation hole 411. The second driving end 422 protrudes from the fourth through hole 75 and is used to abut against the trigger part 53, so that the user does not touch and operate the second unlocking part 42 when opening or closing the door in normal state. The second trigger end 423 is provided with a slot for being operated by a crowbar. By using a crowbar or other tools, the second trigger end 423 can be inserted into the slot of the second trigger end 423 in the second through hole 74, thereby driving the second trigger end 423 to slide downward, reducing the possibility of misoperation and improving the safety of operation.

[0049] Preferably, in the first embodiment, the first trigger end 323 is connected with a handheld part 8, which is exposed outside the first operation hole 311 of the inner door handle 3, so that the user can directly see and touch the handheld part 8, and the user can more intuitively and conveniently find and operate the handheld part 8 when operating the door lock. In the first embodiment, the handheld part 8 is a rectangular sliding block.

[0050] The first reset member 63 and the second reset member 73 include but are not limited to springs or torsion springs. In this embodiment 1, the first reset member 63 is a torsion spring, and the second reset member 73 is a spring. Specifically, one end of the torsion spring is fixedly abutted with the first sliding cavity 62, and the other end is fixedly abutted with the first limiting shell 6. When the first limiting shell 6 slides upward along the first sliding cavity 62, the torsion spring rotates to store force, thereby providing a downward limiting force for the first limiting shell 6 to prevent shaking after sliding. The second sliding body 421 has a reset member accommodating cavity 426 for accommodating the second reset key. The top of the reset member accommodating cavity 426 is provided with a limiting column 427 abutting with the spring downward. The second sliding cavity 72 in the second limiting shell 7 is provided with a spring lower baffle 76. The spring lower baffle 76 is located in the reset member accommodating cavity 426. The spring is clamped between the spring lower baffle 76 and the limiting column 427, thereby providing an upward limiting force for the second unlocking member 42 to keep the state stable after unlocking.

[0051] In the unlocked state, the handheld member 8 is located at the lowermost position. At this time, the first limiting shell 6 is kept at the lowermost position by its own gravity and the limiting force of the first reset key. When the sliding door slides to the closed state, the handheld member 8 is slid upward. At this time, the locking tongue 111 is forced to slide upward. The magnetic attraction member 112 in the locking tongue 111 is close enough to the lock groove 121 to achieve magnetic attraction to slide upward and deeply into the lock groove 121 to achieve the locking operation. At this time, the magnetic attraction force between the magnetic attraction member 112 and the lock groove 121 is greater than the limiting force of the first reset member 63 and the gravity of the first limiting shell 6. When unlocking is needed, the handheld member 8 is manually slid to the lowermost position again. The distance between the magnetic attraction member 112 and the lock groove 121 is pulled away. The magnetic attraction member 112 falls back to the locking tongue 111 under its own gravity. At the same time, the locking tongue 111 also separates from the lock groove 121, thereby completing the unlocking. When unlocking from the outside of the door, the second unlocking member 42 can be operated by a crowbar to abut against the trigger portion 53 of the linkage member 5, thereby driving the first limiting shell 6 and the handheld member 8 to move downward to unlock. After unlocking, the second unlocking member 42 can be automatically reset.

[0052] To improve the sliding stability of the first sliding body 321 and the second sliding body 421, in some embodiments, a first limiting plate 324 is arranged between the first sliding body 321 and the first trigger end 323, a second limiting plate 325 is arranged between the first sliding body 321 and the first driving end 322, a third limiting plate 424 is arranged between the second sliding body 421 and the second trigger end 423, and a fourth limiting plate 425 is arranged between the second sliding body 421 and the second driving end 422. The first limiting plate 324 and the second limiting plate 325 provide additional stability and guidance for the first unlocking member 32, and the third limiting plate 424 and the fourth limiting plate 425 provide additional stability and guidance for the second unlocking member 42. Preferably, the area of the first limiting plate 324 is greater than the area of the first through hole 64, and the first limiting plate 324 slides along the inner wall or the outer wall of the first sliding cavity 62; the area of the second limiting plate 325 is greater than the area of the third through hole 65, and the second limiting plate 325 slides along the inner wall or the outer wall of the first sliding cavity 62. The area of the third limiting plate 424 is greater than the area of the second through hole 74, and the third limiting plate 424 slides along the inner wall or the outer wall of the second sliding cavity 72; the area of the fourth limiting plate 425 is greater than the area of the fourth through hole 75, and the fourth limiting plate 425 slides along the inner wall or the outer wall of the second sliding cavity 72. The first limiting plate 324 ensures that the second trigger end 423 does not accidentally protrude from the first through hole 64, the second limiting plate 325 prevents the first driving end 322 from being excessively stretched or damaged when subjected to external force, and also prevents the first sliding body 321 from accidentally coming out of the first through hole 64 or the third through hole 65 during sliding. The third limiting plate 424 ensures that the second trigger end 423 does not accidentally protrude from the second through hole 74, and the fourth limiting plate 425 prevents the second driving end 422 from being excessively stretched or damaged when subjected to external force, and also prevents the second sliding body 421 from accidentally coming out of the second through hole 74 or the fourth through hole 75 during sliding.

[0053] It should be noted that the connection between the first limiting plate 324 and the first sliding body 321 includes but is not limited to integral connection, welding, screw connection or clamping, the connection between the second limiting plate 325 and the first sliding body 321 includes but is not limited to integral connection, welding, screw connection or clamping, the connection between the third limiting plate 424 and the second sliding body 421 includes but is not limited to integral connection, welding, screw connection or clamping, and the connection between the fourth limiting plate 425 and the second sliding body 421 includes but is not limited to integral connection, welding, screw connection or clamping.

[0054] Optionally, a first cover 621 can be arranged on the first sliding cavity 62 of the inner door handle 3, and a second cover 721 can be arranged on the second sliding cavity 72 of the outer door handle 4, so that the first cover 621 and the second cover 721 can effectively block dust, dirt and other impurities from entering the sliding cavity. This helps to keep the sliding cavity clean and prevent sliding from being difficult or failing due to impurities accumulation. When the internal components need to be repaired or replaced, the first cover 621 and the second cover 721 can be easily removed without damaging the entire door lock structure, and the wear condition of the sliding body, the return member and other components can be directly observed, so that maintenance measures can be taken in time.

[0055] In summary, the push-pull door unlocking mechanism has the following technical effects:

[0056] 1. In an emergency situation, such as a fire or an earthquake in the house, an external person can insert a tool such as a crowbar into the second through hole 74 of the outer door handle 4 and operate the second unlocking member 42 to move downward. This design allows external personnel to open the push-pull door from the outside in time without damaging the door lock, thereby improving safety in emergency situations.

[0057] 2. The first unlocking member 32 is arranged on the inner door handle 3, and the user can easily perform unlocking operation from the inside. This design maintains the convenience of the door lock in daily use, allowing the user to quickly open the push-pull door. The second unlocking member 42 on the outer door handle 4 is hidden in the second through hole 74 in normal state, without damaging the overall aesthetics of the door lock. This design not only meets the rescue needs in emergency situations, but also maintains the cleanliness and aesthetics of the door lock in daily use.

[0058] 3. The first unlocking member 32, the linkage 5 and the lock tongue 111 can move synchronously, thereby realizing smooth unlocking of the door lock, so that the entire unlocking mechanism can meet the unlocking needs in emergency situations while maintaining compactness. The second unlocking member 42 of the outer door handle 4 can operate the first unlocking member 32 to move downward, avoiding the design of a more complex structure, and saving the structure space.

[0059] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes technical solutions composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A sliding door unlocking mechanism, characterized by, The utility model relates to a door lock mechanism (1), the door lock mechanism (1) includes lock shell (11) and lock box (12), the lock tongue (111) that can be slid out upward is equipped in the lock shell (11), the lock box (12) is provided with the lock slot (121) to the lock tongue (111), The inner door handle (3) is provided with a first accommodating groove (31) and a first unlocking part (32), the first unlocking part (32) is movably arranged in the first accommodating groove (31), the first accommodating groove (31) is provided with a first operation hole (311), and the first unlocking part (32) protrudes from the first operation hole (311); The outer door handle (4) is provided with a second accommodating groove (41) and a second unlocking part (42), the second unlocking part (42) is movably arranged in the second accommodating groove (41), the second accommodating groove (41) is provided with a second operation hole (411), and the second unlocking part (42) is hidden in the second operation hole (411); The linkage (5) includes a first connecting part (51), a second connecting part (52) and a trigger part (53), the first connecting part (51) is fixedly connected with the first unlocking part (32), the second connecting part (52) is fixedly connected with the lock tongue (111), the first unlocking part (32), the linkage (5) and the lock tongue (111) move synchronously, the trigger part (53) is abutted below the second unlocking part (42), and the second unlocking part (42) is driven to move downward when the second unlocking part (42) slides downward. The first accommodating groove (31) and the first unlocking part (32) are provided with a first limiting shell (6), and the first limiting shell (6) includes:

2. A sliding door unlocking mechanism according to claim 1, characterised in that A first assembly part (61) is fixedly connected with the inner door handle (3); A first sliding cavity (62) is slidably arranged in the first sliding cavity (62); A first reset part (63) is arranged between the first sliding cavity (62) and the first unlocking part (32) and is used for limiting the first unlocking part (32) at one end of the first sliding cavity (62). One end of the first limiting shell (6) is provided with a first through hole (64) in communication with the first operation hole (311), the other end of the first limiting shell (6) is provided with a third through hole (65), the first unlocking part (32) includes a first sliding main body (321), a first driving end (322) and a first trigger end (323) integrally connected, the first driving end (322) protrudes from the third through hole (65) and is fixed with the first connecting part (51), and the first trigger end (323) protrudes from the first through hole (64).

3. A sliding door unlocking mechanism according to claim 2, characterised in that The first trigger end (323) is connected with a handheld part (8), and the handheld part (8) is exposed outside the first operation hole (311) of the inner door handle (3).

4. A push / pull door unlocking mechanism according to claim 3, wherein ​ 5. A push / pull door unlocking mechanism according to claim 3, wherein The first limiting plate (324) is arranged between the first sliding body (321) and the first trigger end (323), the area of the first limiting plate (324) is greater than the area of the first through hole (64), and the first limiting plate (324) slides along the inner wall or the outer wall of the first sliding cavity (62); the second limiting plate (325) is arranged between the first sliding body (321) and the first driving end (322), the area of the second limiting plate (325) is greater than the area of the third through hole (65), and the second limiting plate (325) slides along the inner wall or the outer wall of the first sliding cavity (62).

6. A sliding door unlocking mechanism according to claim 1, wherein The second limiting shell (7) is arranged between the second accommodating groove (41) and the second unlocking piece (42), and the second limiting shell (7) comprises: The second assembly part (71) is fixedly connected with the outer door handle (4); The second sliding cavity (72) is arranged in the second sliding cavity (72); The second reset piece (73) is arranged between the second sliding cavity (72) and the second unlocking piece (42), and is used for limiting one end of the second unlocking piece (42) in the second sliding cavity (72).

7. A sliding door unlocking mechanism according to claim 6, wherein One end of the second limiting shell (7) is provided with the second through hole (74) in communication with the second operation hole (411), and the other end of the second limiting shell (7) is provided with the fourth through hole (75); the second unlocking piece (42) comprises a second sliding body (421), a second driving end (422) and a second trigger end (423) connected integrally, the second trigger end (423) extends into the second through hole (74) and does not protrude out of the second operation hole (411), and the second driving end (422) protrudes out of the fourth through hole (75) and is used for abutting against the trigger part (53).

8. A sliding door unlocking mechanism according to claim 7, characterised in that The third limiting plate (424) is arranged between the second sliding body (421) and the second trigger end (423), the area of the third limiting plate (424) is greater than the area of the second through hole (74), and the third limiting plate (424) slides along the inner wall or the outer wall of the second sliding cavity (72); the fourth limiting plate (425) is arranged between the second sliding body (421) and the second driving end (422), the area of the fourth limiting plate (425) is greater than the area of the fourth through hole (75), and the fourth limiting plate (425) slides along the inner wall or the outer wall of the second sliding cavity (72).

9. A sliding door unlocking mechanism according to claim 1, wherein The first sliding cavity (62) of the inner door handle (3) is provided with a first cover body (621), and the second sliding cavity (72) of the outer door handle (4) is provided with a second cover body (721).

10. A sliding door unlocking mechanism according to claim 1, characterized in that The longitudinal height of the trigger part (53) of the linkage (5) is less than the longitudinal height of the second connecting part (52), so that the second unlocking piece (42) is reserved with a movement space.

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