Locking mechanism and sheet door sill with same

Abstract

Compared with the prior art, according to the locking mechanism and the sheet-shaped door fence with the locking mechanism, on the basis of the prior art, through connection and matching of a hook part and a hook groove, it is guaranteed that when a ribbon or a rope at the corresponding position is cut off, an outer door fence is still kept in connection and matching with the locking mechanism, and the situation of local reset cannot happen; therefore, the situation that the human body is possibly injured due to resetting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of protective door fences, in particular to a locking mechanism and a sheet-shaped door fence having the same. Background Art

[0002] With the progress of social economy, people's safety awareness is getting higher and higher, especially for children. They not only pay attention to their safety outdoors, but also pay attention to their safety indoors. Therefore, parents usually set up safety gates in indoor corridors, stairwells and other places to eliminate potential dangers.

[0003] The safety gates for children or pets currently on the market generally include an outer gate and an inner gate. The outer gate is fixed at the position to be installed, and mainly includes a horizontal bottom bar and two vertical poles fixed vertically at both ends of the bottom bar. The inner gate is located between the two vertical poles, one side of which is rotatably connected to one of the vertical poles, and the other side is provided with a gate lock, and a lock slot that cooperates with the gate lock is provided on the other vertical pole. The outer gate and the inner gate are locked together through the cooperation of the gate lock and the lock slot.

[0004] In the prior art, the outer door rail is mainly fixed by keeping it tightly against various positions of the installation position at several locations. However, since the upright pole is in a vertical state and the upright pole with a lock slot is forced to tilt due to the force generated by the tight contact, the lock slot is too close to the door rail lock and exceeds the matching position with the door rail lock tongue, resulting in the inner door rail and the outer door rail are not compatible. In order to avoid the problem of incompatibility, the upright pole with the lock slot is usually set to a slightly tilted state so that the upper end of the upright pole is slightly away from the door rail lock. In this way, after the assembly is completed, the upright pole is slightly deformed by the pressure of the installation position to achieve position correction, and the door rail lock makes the upper end of the upright pole move toward the door rail lock, so that the lock slot reaches a position that matches the door rail lock, and at the same time, the upper end of the upright pole can be kept elastically against the installation position to increase a certain fixing strength.

[0005] When the product leaves the factory, in order to facilitate product packaging and assembly to the installation location, when the lock slot is in the position that matches the gate lock, the vertical pole with the lock slot and the inner gate are tied together at the appropriate position using cable ties or ropes, so that the vertical pole remains deformed and the lock slot remains in the position that matches the gate lock. After completing the assembly to the installation location, the cable ties or ropes can be cut off. Special instructions for this are also given in the installation steps of the product manual.

[0006] The following shortcomings exist: sometimes consumers will cut the cable tie or rope directly after taking the product out of the packaging box without knowing it. At the moment the cable tie or rope is cut, part of the outer door rail, that is, one of the vertical poles will be undeformed and reset, so that the lock slot is away from the door rail lock. The reset process is fast and short, and the instantaneous explosive force is large, which can easily cause harm to the human body if it comes into contact with the human body during the process. Utility Model Content

[0007] The main purpose of the utility model is to provide a locking mechanism and a sheet-shaped door fence having the same, aiming to solve the problem that when the tie or rope on the existing safety door fence is disconnected, local reset occurs, and the reset process may cause harm to the human body.

[0008] To achieve the above-mentioned purpose, the present invention provides a locking mechanism, comprising a first connecting seat and a locking tongue provided on the first connecting seat, wherein an outer wall of the first connecting seat is provided with a hook portion.

[0009] Preferably, the lock tongue is movably arranged inside the first connecting seat and can move relative to the first connecting seat between a position partially extending out of the first connecting seat and a position retracted into the first connecting seat. The lock tongue is connected to a driving part, and the driving part is located outside the first connecting seat. The driving part is used to drive the lock tongue to perform the movement. A limit member is also provided, and the limit member is movably installed on the first connecting seat. The limit member can move relative to the first connecting seat between a position partially opposite to and staggered with the lock tongue. When the limit member is partially opposite to the lock tongue, it can limit the lock tongue from moving toward the direction of retreating into the first connecting seat.

[0010] Preferably, the first connecting seat is provided with a first cavity for accommodating the locking tongue, a ferrule is movably installed in the first cavity, the ferrule is sleeved on the locking tongue, and the front and rear sides of the first connecting seat are provided with the driving part fixedly connected to the ferrule.

[0011] Preferably, the ferrule is movably sleeved on the lock tongue, and the lock tongue can move relative to the ferrule between a position where it partially passes through the ferrule and is exposed to the outside and a position where it is retracted into the ferrule. A first top spring is also provided, one end of the first top spring is abutted against the inner wall of the first cavity, and the other end is elastically abutted against the lock tongue, for applying an elastic force to the lock tongue to move in a direction where it partially passes through the ferrule and is exposed to the outside.

[0012] Preferably, the driving part is fixed to the ferrule via a connecting part, and the first connecting seat is opened at a position corresponding to the movement trajectory of the connecting part to form an avoidance.

[0013] Preferably, the bottom wall of the ferrule is provided with a first limiting portion, the first cavity is provided with a first limiting hole, and the first limiting portion partially extends into the first limiting hole and can move in the first limiting hole with the movement of the ferrule.

[0014] Preferably, the outer wall of the driving part is provided with anti-slip grooves.

[0015] Preferably, the first connecting seat is provided with a second cavity for accommodating the limit member, and a vertically extending positioning hole is provided on one side of the first cavity. The first cavity is connected with the second cavity through the positioning hole. One end of the limit member is rotatably installed in the second cavity so that the limit member can swing vertically relative to the first connecting member. The other end of the limit member is provided with a positioning portion, and the positioning portion extends into the first cavity through the positioning hole. The positioning portion can move between a position opposite to and a position staggered with the lock tongue as the limit member swings vertically.

[0016] Preferably, the ferrule is provided with a slot for the positioning portion to be inserted into, and the positioning portion can move between a position opposite to the outer wall of the ferrule and a position opposite to the slot as the limiting member swings vertically.

[0017] Preferably, the second cavity is provided with a connecting pin, the free end wall of the connecting pin is an arc surface, the end of the limiting member away from the positioning portion is provided with a pivot groove for rotating with the free end of the connecting pin, and a cover body is also provided, and the cover body is arranged at a position below the second cavity corresponding to the pivot groove.

[0018] The present invention also proposes a sheet-like door fence, comprising an outer door fence, an inner door fence pivotally mounted on the outer door fence, and a locking mechanism. The locking mechanism refers to the above embodiment, and the locking mechanism is mounted on the inner door fence. The outer door fence is provided with a lock groove for cooperating with the lock tongue. The inner door fence can swing relative to the outer door fence between positions where the lock tongue and the lock groove are aligned and staggered. The outer door fence is also provided with a hook groove cooperating with the hook portion. The hook portion can swing between a position of entering and exiting the hook groove as the inner door fence swings.

[0019] Preferably, the lock slot is directly formed on the outer door sill, or a second connecting seat having the lock slot is further provided, and the second connecting seat is installed on the outer door sill.

[0020] Preferably, a moving block is movably installed in the lock slot, and the moving block can move between a position flush with the lock slot opening and a position away from the lock slot opening. A second top spring is also provided, and the second top spring is used to apply an elastic force to the moving block to move in a direction flush with the lock slot opening.

[0021] Preferably, the lock slot is provided with a second limiting hole, and the side of the moving block away from the lock slot opening is provided with a second limiting portion passing through the second limiting hole, and the end of the second limiting portion away from the moving block has a barb for preventing the moving block from easily detaching from the lock slot.

[0022] Preferably, a movable pin is movably installed at the bottom of the inner door sill corresponding to the position of the locking mechanism, and a lock hole is provided at the position below the movable pin corresponding to the outer door sill. The movable pin is linked to the limiting member through a pull rope and can move between the position of insertion into the lock hole and exit as the limiting member moves.

[0023] The first hinge structure is a hinge structure formed on the outer door frame and the hinge structure is a hinge structure formed on the inner door frame, wherein the hinge structure comprises a seat body fixed to the outer door frame and a first swinging member fixed to the inner door frame, the first swinging member is provided with a vertically extending connecting shaft, the seat body is formed with a vertically extending shaft hole with open ends, the connecting shaft is inserted from top to bottom into the shaft hole to realize the rotational cooperation between the first swinging member and the seat body, the free end of the connecting shaft is provided with a check valve for limiting the connecting shaft from disengaging from the shaft hole from bottom to top, the upper end opening of the shaft hole is formed with a guide groove, and the first swinging member is formed with a guide portion for contacting the guide groove at a position above the guide groove corresponding to the position of the first swinging member. When the first swinging member swings along the inner door frame in the staggered direction of the lock tongue and the lock groove, the first swinging member can be lifted relative to the seat body by the cooperation of the guide portion and the guide groove;

[0024] The second hinge structure includes a second swinging member fixed to the inner door rail and a latch inserted into the outer door rail. The latch is rotatably connected to the second swinging member. A latch position is formed on the upper end of the latch. The second swinging member is formed with a latch block adapted to the latch position. The latch block can move between entering and leaving the latch slot as the inner door rail swings. When the lock tongue is aligned with the lock slot, the latch block is located in the latch slot.

[0025] Preferably, the outer door fence is fixed to the position to be installed by a fixing mechanism, and the fixing mechanism includes a locking member movably screwed to the outer door fence, and the locking member can move relative to the outer door fence between a position in close contact with and a position separated from the position to be installed. The locking member is also screwed with a locking member, and the locking member can move relative to the locking member between a position in close contact with the outer door fence to lock and separate the locking member. A plurality of clips are formed at annular intervals on one side of the locking member close to the outer door fence, and a recess is formed at a position of the outer door fence corresponding to the clip. When the locking member is in close contact with the outer door fence, the clip is located in the recess.

[0026] Preferably, the outer door fence includes a horizontal bar and two vertical bars fixed at both ends of the horizontal bar respectively. The inner door fence is located above the horizontal bar and corresponds to a position between the two vertical bars. The inner door fence is a frame-shaped component formed by multiple connecting rods or a sheet-shaped component with multiple hollow places. When it is a frame-shaped component, the inner door fence is covered with software.

[0027] The latch mechanism of the present invention is characterized in that the latch mechanism is adapted to engage with the latch bolt and engage with the first latch bolt, and the latch bolt is adapted to engage with the first latch bolt, so that the latch bolt can be locked to the outer door frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view of the locking mechanism;

[0029] Figure 2 is a cross-sectional view of the locking mechanism;

[0030] Figure 3 This is an exploded view of the locking mechanism from a first angle;

[0031] Figure 4 This is a second angle exploded view of the locking mechanism;

[0032] Figure 5 It is a three-dimensional diagram of a sheet gate;

[0033] Figure 6 Schematic diagram of outer gate fence and inner gate fence;

[0034] Figure 7 It is a cross-sectional view of a sheet-like gate;

[0035] Figure 8 This is a cross-sectional view of the lock tongue partially inserted into the lock slot;

[0036] Figure 9 It is an assembly cross-sectional view of the first swing member and the seat body. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The utility model provides a locking mechanism.

[0041] In the embodiment of the present utility model, Figures 1 to 9 As shown, the locking mechanism includes a first connecting seat 1 and a locking tongue 11 provided on the first connecting seat, and a hook portion 18 is provided on the outer wall of the first connecting seat.

[0042] Specifically, the lock tongue 11 is movably arranged inside the first connecting seat 1, and can move relative to the first connecting seat 1 between a position partially extending out of the first connecting seat 1 and a position retracted into the first connecting seat 1. The lock tongue 11 is connected to a driving part 121, and the driving part 121 is located outside the first connecting seat 1. The driving part 121 is used to drive the lock tongue 11 to perform the movement. A limit member 13 is also provided, and the limit member 13 is movably installed on the first connecting seat 1. The limit member 13 can move relative to the first connecting seat 1 between a position partially opposite to and staggered from the lock tongue 11. When the limit member 13 is partially opposite to the lock tongue 11, it can limit the lock tongue 11 from moving in the direction of retreating into the first connecting seat 1. Hold the first connecting seat with your palm, and use the middle finger, ring finger and little finger to drive the limit part to move until it is partially offset from the lock tongue. Then, use the thumb and index finger to pinch the driving part and apply force to drive the lock tongue to move in the direction of exiting the lock slot to unlock. Compared with the traditional method, the unlocking action is divided into two steps. It is more difficult for children to unlock and not easy to learn, which effectively solves the problem that children can easily unlock by themselves. For adults, the unlocking action is ergonomic and can be easily unlocked with one hand.

[0043] Specifically, the first connecting seat 1 is provided with a first cavity 14 for accommodating the locking tongue 11. A ferrule 12 is movably installed in the first cavity 14. The ferrule 12 is sleeved on the locking tongue 11. The front and rear sides of the first connecting seat 1 are provided with driving parts 121 fixedly connected to the ferrule 12. The driving parts 121 can drive the ferrule 12 to drive a portion of the locking tongue 11 to extend out of the first connecting seat 1 or withdraw from the first connecting seat 1.

[0044] Specifically, the ferrule 12 is movably mounted on the lock tongue 11, and the lock tongue 11 can move relative to the ferrule 12 between a position where it partially passes through the ferrule 12 and is exposed to the outside, and a position where it retracts into the ferrule 12. A first top spring (not shown) is also provided, one end of which abuts against the inner wall of the first cavity 14, and the other end elastically abuts against the lock tongue 11, for applying an elastic force to the lock tongue 11 to move in a direction where it partially passes through the ferrule 12 and is exposed to the outside. The portion of the lock tongue 11 that passes through the ferrule 12 and is exposed to the outside is the portion of the lock tongue 11 that extends out of the first connecting seat 1.

[0045] Specifically, since the ferrule 12 is located inside the first connecting seat 1, and the driving part 121 is located outside the first connecting seat 1 and is fixedly connected to the ferrule 12, in order to ensure that the driving part 121 can smoothly drive the ferrule 12 to move, in this embodiment, the driving part 121 is fixed to the ferrule 12 through the connecting part 122, and the position of the first connecting seat 1 corresponding to the movement trajectory of the connecting part 122 is opened to form avoidance.

[0046] Specifically, the bottom wall of the ferrule 12 is provided with a first limiting portion 123, and the first cavity 14 is provided with a first limiting hole 141. The first limiting portion 123 partially extends into the first limiting hole 141 and can move in the first limiting hole 141 with the movement of the ferrule 12 to prevent the ferrule 12 from excessive movement and causing the ferrule 12 to detach from the first cavity 14.

[0047] Specifically, the outer wall of the driving portion 121 is provided with anti-slip grooves.

[0048] Specifically, the first connecting seat 1 is provided with a second cavity 15 for accommodating the limit member 13, and a vertically extending positioning hole 151 is provided on one side of the first cavity 14. The first cavity 14 is connected with the second cavity 15 through the positioning hole 151. One end of the limit member 13 is rotatably installed in the second cavity 15 so that the limit member 13 can swing vertically relative to the first connecting member. The other end of the limit member 13 is provided with a positioning portion 131, and the positioning portion 131 extends into the first cavity 14 through the positioning hole 151. The positioning portion 131 can move between positions relative to and staggered with the lock tongue 11 as the limit member 13 swings vertically.

[0049] Specifically, the ferrule 12 is provided with a slot 124 into which the positioning portion 131 can be inserted. The positioning portion 131 can move between a position opposite to the outer wall of the ferrule 12 and a position opposite to the slot 124 as the limiting member 13 swings vertically. When the positioning portion 131 is opposite to the slot 124, the locking tongue 11 can move in a direction of partially retracting into the first connecting seat 1 while the positioning portion 131 is inserted into the slot 124.

[0050] Specifically, the second cavity 15 is provided with a connecting pin 152, the free end wall of which is an arcuate surface. The end of the stopper 13, remote from the positioning portion 131, is provided with a pivoting slot 132 for rotationally engaging with the free end of the connecting pin 152. A cover 16 is also provided, which is disposed in the second cavity 15 below the pivoting slot 132. The cover 16 is used to prevent the pivoting slot 132 from disengaging from the connecting pin 152. The cover 16 is secured to the second cavity 15 by screws or a snap-fit ​​structure. In the case of a snap-fit ​​structure, reference may be made to the prior art, and its specific structural principle will not be described in detail here.

[0051] The present invention also provides a sheet-like door rail, comprising an outer door rail 2, an inner door rail 3 pivotally mounted on the outer door rail 2, and a locking mechanism. For other specific details of the locking mechanism, reference may be made to the above-described embodiments. Since the sheet-like door rail adopts all the technical solutions of all the above-described locking mechanism embodiments, it at least has all the beneficial effects brought about by the technical solutions of the above-described embodiments, and no further description is given here. The locking mechanism is mounted on the inner door rail 3. The outer door rail 2 is provided with a lock slot 100 for engaging with a lock tongue. The inner door rail 3 can swing relative to the outer door rail 2 between positions such that the lock tongue 11 is aligned with and offset from the lock slot 100. The outer door rail is also provided with a hook slot 42 that engages with the hook portion 18. The hook portion 18 can swing between a position of entering and exiting the hook slot 42 as the inner door rail swings.

[0052] Specifically, when the first connecting seat 1 is assembled on the inner door sill 3, the connecting pin 152 can be directly passed through the inner door sill 3 and then rotated to cooperate with the pivot groove 132, or as shown in FIG. Figure 2 、 Figure 4 as well as Figure 8 As shown, a strip member 17 having the connecting pin 152 is further provided in the second cavity 15, and the strip member 17 is locked to the inner door sill 3 by screws. After the first connecting seat 1 covers a part of the inner door sill 3 and the strip member 17 through the second cavity 15, the limit member 13 and the cover body 16 are assembled in sequence to complete the detachable assembly of the locking mechanism and the inner door sill 3.

[0053] Specifically, the lock slot 100 is directly formed on the outer door sill 2, or a second connecting seat 4 having the lock slot 100 is further provided, the second connecting seat 4 is installed on the outer door sill 2, and the hook slot is formed on the second connecting seat.

[0054] Specifically, the hook portion 18 has various shapes, such as L-shaped, C-shaped, or other shapes that can prevent the second connecting seat from being separated from the first connecting seat.

[0055] It should be noted that the movement direction of the first connecting seat and the second connecting seat when they are separated is the same as the movement direction of the lock tongue when it is extended or withdrawn.

[0056] Specifically, the hook groove has two opposite sides extending to penetrate the front side wall and the rear side wall of the first connecting seat, so that the hook part can smoothly enter the hook groove during the swinging process to achieve the connection between the hook groove and the hook part or smoothly exit the hook groove to release the connection.

[0057] Specifically, a guide surface is provided at a position on the side of the lock groove 100 corresponding to the second connecting seat 4. During the swinging of the inner door rail 3 toward the direction in which the lock tongue 11 is aligned with the lock groove 100, the guide surface can force the lock tongue 11 to move toward the direction of retreating into the first connecting seat 1 until the lock tongue 11 corresponds to the lock groove 100. The elastic force applied by the first top spring forces the lock tongue 11 to partially extend out of the first connecting seat 1 and insert into the lock groove 100, thereby realizing automatic locking of the inner door rail 3 and the outer door rail 2.

[0058] Specifically, a moving block 41 is movably installed in the lock slot 100, and the moving block 41 can move between a position flush with the opening of the lock slot 100 and a position away from the opening of the lock slot 100. A second top spring (not shown) is also provided. The second top spring is used to apply an elastic force to the moving block 41 to move in a direction flush with the opening of the lock slot 100.

[0059] It should be noted that the elastic force applied by the first top spring is greater than the elastic force applied by the second top spring, so that the moving block 41 can be pushed to move away from the opening of the lock slot 100 when the lock tongue 11 extends into the lock slot 100.

[0060] Specifically, the second connecting seat 4 is also provided with a window connected to the lock slot 100, and the side of the moving block 41 close to the window is provided with a first schematic portion for indicating a locked state and a second schematic portion for indicating an unlocked state. When the moving block 41 is in a position flush with the opening of the lock slot 100, the second schematic portion is aligned with the window, and when the moving block 41 is in a position away from the opening of the lock slot 100, the first schematic portion is aligned with the window.

[0061] Specifically, the lock slot 100 is provided with a second limiting hole (not shown), and the side of the moving block 41 away from the opening of the lock slot 100 is provided with a second limiting portion (not shown) passing through the second limiting hole, and the end of the second limiting portion away from the moving block 41 has a barb for preventing the moving block 41 from easily detaching from the lock slot 100.

[0062] Specifically, the locking slot 100 is T-shaped, and the shape of the moving block 41 is consistent with the shape of the locking slot 100 .

[0063] Specifically, a movable pin 5 is movably mounted at the bottom of the inner door sill 3 at a position corresponding to the locking mechanism. A lock hole 21 is provided on the outer door sill 2 at a position corresponding to the position below the movable pin 5. The movable pin 5 is linked to the position-limiting member 13 via a pull cord 200 and can move between a position of insertion into the lock hole 21 and a position of withdrawal as the position-limiting member 13 moves. The movable pin 5 cooperates with the lock hole 21 to further lock the inner door sill 3 and the outer door sill 2. When the position-limiting member 13 partially opposes the lock tongue 11, the movable pin 5 is located in the lock hole 21. When the position-limiting member 13 moves in a direction offset from the lock tongue 11, the movable pin 5 moves in a direction of withdrawal from the lock hole 21.

[0064] Specifically, a third top spring 31 is further provided, and the third top spring 31 is used to apply an elastic force to the movable pin 5 to move in a direction of inserting into the lock hole 21 .

[0065] Specifically, the lock hole 21 is directly formed on the outer door sill 2 , or a connecting component having the lock hole 21 is locked by screws or fixed to the outer door sill 2 by a snap-fit ​​structure.

[0066] Specifically, one side of the inner door fence 3 is rotatably connected to the outer door fence 2 through a rotating shaft, or the inner door fence 3 is rotatably connected to the outer door fence 2 through a first hinge structure and a second hinge structure. The first hinge structure includes a seat body 61 fixed to the outer door fence 2 and a first swinging member 62 fixed to the inner door fence 3. The first swinging member 62 is provided with a vertically extending connecting shaft 63. The seat body 61 is formed with a vertically extending shaft hole 64 open at both ends. The connecting shaft 63 is inserted into the shaft hole 64 from top to bottom to realize the first swinging member 62. In cooperation with the rotation of the base body 61, the free end of the connecting shaft 63 is provided with a check valve 65 for limiting the connecting shaft 63 from disengaging from the shaft hole 64 from bottom to top. The upper end opening of the shaft hole 64 is formed with a guide groove 66. The first swinging member 62 is formed with a guide portion (not shown) for contacting the guide groove 66 at a position corresponding to the position above the guide groove 66. When the first swinging member 62 swings along with the inner door sill 3 in the direction of staggering the lock tongue 11 and the lock groove 100, the first swinging member 62 can move upward relative to the base body 61 through the cooperation between the guide portion and the guide groove 66.

[0067] The second hinge structure includes a second swinging member 71 fixed to the inner door sill 3 and a latch 72 inserted into the outer door sill 2. The latch 72 is rotatably connected to the second swinging member 71. A latch position (not shown) is formed on the upper end of the latch 72. The second swinging member 71 is formed with a block 73 adapted to the latch position. The block 73 can move between the position of entering the slot and the position of moving away from the slot as the inner door sill 3 swings. When the lock tongue 11 is aligned with the lock slot 100, the block 73 is located in the slot.

[0068] Specifically, a fourth top spring 67 is further provided, and the fourth top spring 67 is sleeved on the connecting shaft 63, and the upper end and the lower end of the fourth top spring 67 are elastically pressed against the inner wall of the shaft hole 64 and the check return 65 respectively. During the swinging of the inner door stile 3 toward the direction in which the lock tongue 11 and the lock slot 100 are staggered, the fourth top spring 67 is forced to be compressed. During the swinging of the inner door stile 3 toward the direction in which the lock tongue 11 and the lock slot 100 are aligned, the fourth top spring 67 is gradually decompressed and releases the elastic force. At the same time, through the cooperation of the guide part and the guide slot 66, the inner door stile 3 is automatically swung toward the direction in which the lock tongue 11 and the lock slot 100 are aligned, so as to realize the automatic door closing action.

[0069] Specifically, the outer door fence 2 is fixed to the position to be installed by a fixing mechanism, and the fixing mechanism includes a locking member 81 movably screwed to the outer door fence 2, and the locking member 81 can move between a position close to and a position separated from the position to be installed relative to the outer door fence 2. The locking member 81 is also screwed with a locking member 82, and the locking member 82 can move between a position close to and a position of locking and separating the locking member 81 relative to the locking member 81. The locking member 82 is close to the outer door fence 2 and has multiple clips (not shown) formed at annular intervals on one side, and the outer door fence 2 has recesses (not shown) formed at positions corresponding to the clips. When the locking member 82 is in close contact with the outer door fence 2, the clips are located in the recesses.

[0070] It should be noted that the above-mentioned locations to be installed are mainly walls.

[0071] Specifically, in this embodiment, Figure 5 As shown, the fixing mechanisms are provided at the upper left corner, upper right corner, lower left corner and lower right corner of the outer door rail 2 .

[0072] Specifically, the outer door rail 2 includes a crossbar and two vertical rods fixed to the ends of the crossbar, and the inner door rail 3 is located above the crossbar at a position corresponding to the position between the two vertical rods. The inner door rail 3 is a frame-shaped component formed by multiple connecting rods or a sheet-shaped component with multiple hollows. In the case of a frame-shaped component, the inner door rail 3 is covered with a soft material. Of course, in the case of a sheet-shaped component, it can also be covered with a soft material. In this embodiment, the vertical rod with the second connecting seat is tilted relative to the crossbar. The vertical rod can be forced to deform by external force to move the second connecting seat toward the locking mechanism. The deformation state of the vertical rod is then maintained by the cooperation of the hook portion and the hook groove. When the sheet-shaped door rail is not assembled in the installation position, the vertical rod needs to be manually deformed to connect the hook groove with the hook portion. When the sheet-shaped door rail is assembled and fixed in the installation position, the vertical rod can be forced to maintain the deformation state by the installation position (mainly a wall), so that the locking groove is in the appropriate position.

[0073] Specifically, the inner door sill 3 can be a foldable structure or a non-foldable structure. When it is a foldable structure, folding is achieved through a joint mechanism. The joint mechanism can refer to the existing technology, and its specific structural principle will not be repeated here.

[0074] The latch mechanism of the present invention is characterized in that the latch mechanism is adapted to engage with the latch bolt and engage with the first latch bolt, and the latch bolt is adapted to engage with the first latch bolt, so that the latch bolt can be locked to the outer door frame.

[0075] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A locking mechanism comprising a first connecting seat (1) and a locking tongue (11) provided on the first connecting seat, characterized in that: The outer wall of the first connecting seat is provided with a hook portion (18), the locking tongue (11) is movably arranged inside the first connecting seat (1), and can move relative to the first connecting seat (1) between a position of partially extending out of the first connecting seat (1) and a position of retracting into the first connecting seat (1), the locking tongue (11) is connected to a driving portion (121), the driving portion (121) is located outside the first connecting seat (1), the driving portion (121) is used to drive the locking tongue (11) to make the said movement, and a limiting member (13) is also provided, the limiting member (13) is movably installed on the first connecting seat (1), the limiting member (13) can move relative to the first connecting seat (1) between a position partially opposite to the locking tongue (11) and a position staggered, and when the limiting member (13) is partially opposite to the locking tongue (11), it can limit the locking tongue (11) from moving toward the direction of retracting into the interior of the first connecting seat (1).

2. The locking mechanism according to claim 1, wherein: The first connecting seat (1) is provided with a first cavity (14) for accommodating the locking tongue (11); a clamping sleeve (12) is movably installed in the first cavity (14); the clamping sleeve (12) is sleeved on the locking tongue (11); and the front and rear sides of the first connecting seat (1) are provided with the driving portion (121) fixedly connected to the clamping sleeve (12).

3. The locking mechanism according to claim 2, wherein: The clamping sleeve (12) is movably mounted on the locking tongue (11), and the locking tongue (11) can move relative to the clamping sleeve (12) between a position where the locking tongue partially passes through the clamping sleeve (12) and is exposed to the outside and a position where the locking tongue (11) is retracted into the clamping sleeve (12). A first top spring is also provided, one end of the first top spring abuts against the inner wall of the first cavity (14), and the other end elastically abuts against the locking tongue (11), and is used to apply an elastic force to the locking tongue (11) to move in a direction where the locking tongue partially passes through the clamping sleeve (12) and is exposed to the outside.

4. The locking mechanism according to claim 2, wherein: The driving part (121) is fixed to the ferrule (12) via the connecting part (122), and the first connecting seat (1) is opened at a position corresponding to the movement trajectory of the connecting part (122) to form an avoidance.

5. The locking mechanism according to claim 2, wherein: The bottom wall of the ferrule (12) is provided with a first limiting portion (123), and the first cavity (14) is provided with a first limiting hole (141). The first limiting portion (123) partially extends into the first limiting hole (141) and can move in the first limiting hole (141) as the ferrule (12) moves.

6. The locking mechanism according to claim 1, wherein: The outer wall of the driving portion (121) is provided with anti-slip grooves.

7. The locking mechanism according to claim 2, wherein: The first connecting seat (1) is provided with a second cavity (15) for accommodating the limiting member (13); a positioning hole (151) extending vertically is provided on one side of the first cavity (14); the first cavity (14) is connected to the second cavity (15) through the positioning hole (151); one end of the limiting member (13) is rotatably mounted on the second cavity (15) so that the limiting member (13) can swing vertically relative to the first connecting member; the other end of the limiting member (13) is provided with a positioning portion (131); the positioning portion (131) passes through the positioning hole (151) and extends into the first cavity (14); the positioning portion (131) can move between a position relative to and a position offset from the lock tongue (11) as the limiting member (13) swings vertically.

8. The locking mechanism according to claim 7, wherein: The ferrule (12) is provided with a slot (124) for the positioning portion (131) to be inserted into, and the positioning portion (131) can move between a position relative to the outer wall of the ferrule (12) and a position relative to the slot (124) as the limiting member (13) swings vertically.

9. The locking mechanism according to claim 7, wherein: The second cavity (15) is provided with a connecting pin (152), the free end wall of the connecting pin (152) is an arc surface, the end of the limiting member (13) away from the positioning portion (131) is provided with a pivot groove (132) for rotating with the free end of the connecting pin (152), and a cover body (16) is also provided. The cover body (16) is arranged at a position below the second cavity (15) corresponding to the pivot groove (132).

10. A sheet-like door fence, comprising an outer door fence (2) and an inner door fence (3) pivotally mounted on the outer door fence (2), characterized in that: The invention also includes a locking mechanism as described in any one of claims 1 to 9, wherein the locking mechanism is installed on the inner door fence (3), the outer door fence (2) is provided with a lock groove (100) for cooperating with the lock tongue, and the inner door fence (3) can swing relative to the outer door fence (2) between positions in which the lock tongue (11) and the lock groove (100) are aligned and staggered, and the outer door fence is also provided with a hook groove (42) cooperating with the hook portion (18), and the hook portion (18) can swing between a position of entering the hook groove (42) and a position of exiting as the inner door fence swings.

11. The sheet-like door barrier according to claim 10, characterized in that: The lock slot (100) is directly formed on the outer door sill (2), or a second connecting seat (4) having the lock slot (100) is further provided, and the second connecting seat (4) is installed on the outer door sill (2).

12. The sheet-like door barrier according to claim 10, characterized in that: A moving block (41) is movably installed in the lock slot (100), and the moving block (41) can move between a position flush with the opening of the lock slot (100) and a position away from the opening of the lock slot (100). A second top spring is also provided, and the second top spring is used to apply an elastic force to the moving block (41) to move in a direction flush with the opening of the lock slot (100).

13. The sheet-like door barrier according to claim 12, characterized in that: The lock slot (100) is provided with a second limiting hole, and a second limiting portion passing through the second limiting hole is provided on a side of the movable block (41) away from the opening of the lock slot (100), and a barb is provided on an end of the second limiting portion away from the movable block (41) for preventing the movable block (41) from easily escaping from the lock slot (100).

14. The sheet-like door barrier according to claim 10, characterized in that: A movable pin (5) is movably mounted at a position corresponding to the locking mechanism at the bottom of the inner door fence (3); a lock hole (21) is provided at a position corresponding to the bottom of the movable pin (5) at the outer door fence (2); the movable pin (5) is linked to the limiting member (13) via a pull rope (200) and can move between a position of being inserted into the lock hole (21) and a position of being withdrawn as the limiting member (13) moves.

15. The sheet-like door barrier according to claim 10, characterized in that: The inner door fence (3) is rotatably connected to the outer door fence (2) through a first hinge structure and a second hinge structure. The first hinge structure includes a seat body (61) fixed to the outer door fence (2) and a first swinging member (62) fixed to the inner door fence (3). The first swinging member (62) is provided with a vertically extending connecting shaft (63). The seat body (61) is formed with a vertically extending shaft hole (64) open at both ends. The connecting shaft (63) is inserted into the shaft hole (64) from top to bottom to realize the rotational cooperation between the first swinging member (62) and the seat body (61). The free end of the connecting shaft (63) is provided with a check valve (65) for limiting the connection shaft (63) from being disengaged from the shaft hole (64) from bottom to top. The upper end opening of the shaft hole (64) is formed with a guide groove (66). The first swinging member (62) is formed with a guide portion for contacting the guide groove (66) at a position above the guide groove (66). When the first swinging member (62) swings along with the inner door bar (3) toward the direction in which the lock tongue (11) and the lock groove (100) are staggered, the first swinging member (62) can be made to move upward relative to the seat body (61) through the cooperation between the guide portion and the guide groove (66); The second hinge structure comprises a second swinging member (71) fixed to the inner door sill (3) and a latch (72) inserted into the outer door sill (2); the latch (72) is rotatably plugged into the second swinging member (71); a latch position is formed on the upper end of the latch (72); the second swinging member (71) is formed with a latch block (73) adapted to the latch position; the latch block (73) can move between a position of entering the latch slot and a position of moving away from the latch slot as the inner door sill (3) swings; when the lock tongue (11) is aligned with the lock slot (100), the latch block (73) is located in the latch slot.

16. The sheet-like door barrier according to claim 10, characterized in that: The outer door fence (2) is fixed to the position to be installed by a fixing mechanism, and the fixing mechanism includes a locking member (81) movably screwed to the outer door fence (2), and the locking member (81) can move between a position close to and a position separated from the position to be installed relative to the outer door fence (2). The locking member (81) is also screwed to a locking member (82), and the locking member (82) can move between a position close to and a position of locking the locking member (81) relative to the locking member (81). A plurality of locking portions are formed at annular intervals on one side of the locking member (82) close to the outer door fence (2), and a recess is formed at a position corresponding to the retaining portion of the outer door fence (2). When the locking member (82) is in close contact with the outer door fence (2), the retaining portion is located in the recess.

17. The sheet-like door barrier according to claim 10, characterized in that: The outer door fence (2) includes a cross bar and two vertical bars fixed to the two ends of the cross bar respectively. The inner door fence (3) is located above the cross bar and at a position corresponding to the two vertical bars. The inner door fence (3) is a frame-shaped component formed by connecting multiple connecting rods or a sheet-shaped component with multiple hollow parts. When it is a frame-shaped component, the inner door fence (3) is covered with a soft body.

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