Locking mechanism and door sill with same

Abstract

According to the locking mechanism and the door fence with the locking mechanism, a first spring bolt needs to be driven by a driving piece to retreat from a first locking groove, then the door fence is made to ascend to enable a second spring bolt to be separated from the second locking groove from a top opening of the second locking groove, and therefore unlocking of an inner door fence and an outer door fence is achieved, the unlocking action is conducted in two steps, the unlocking difficulty is improved, and the unlocking efficiency is improved. Children are not easy to learn, and the problem that children can easily unlock the lock by themselves is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective door rails, in particular to a locking mechanism and a door rail 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 locations 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 a position to be installed, and the outer gate is rotatably connected to one side of the inner gate. A gate lock is provided on the other side, and a lock slot that cooperates with the gate lock is provided on the outer gate. The outer gate and the inner gate are locked together through the cooperation of the gate lock and the lock slot. However, the gates in the prior art are mainly unlocked by pressing a button or rotating a knob, and the operation method is relatively simple, so that children can unlock by themselves, and therefore, children cannot be effectively confined in a safe area. Utility Model Content

[0004] The main purpose of the utility model is to provide a locking mechanism and a door fence having the same, aiming to solve the problem that the door fence lock and unlocking method of the existing safety door fence is relatively simple and can be easily unlocked by children.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a locking mechanism, comprising:

[0006] a first locking slot and a second locking slot;

[0007] A first connecting seat, wherein the first connecting seat is provided with a first locking tongue for inserting into the first locking groove and a second locking tongue for inserting into the second locking groove, and the first locking tongue can move between a position of inserting into the first locking groove and a position of withdrawing from the first connecting seat;

[0008] A driving member, wherein the driving member is connected to the first locking tongue and is used to drive the first locking tongue to perform the movement.

[0009] Preferably, the driving member is fixedly connected to the first locking tongue, and the driving member is exposed after passing through the first connecting seat;

[0010] Alternatively, the driving member is a sleeve movably mounted on the first locking tongue, the first connecting seat is provided with a first accommodating groove in which the sleeve can move, the first locking tongue is partially exposed after passing through the sleeve, the sleeve can drive the first locking tongue to move between a position where the partially exposed lock tongue is inserted into the first locking groove and a position away from the partially exposed lock tongue, the outer wall of the sleeve is connected to a driving part, the driving part is exposed after passing through the first connecting seat, and a first top spring is further provided, the first top spring is used to apply an elastic force to the first locking tongue to move in a direction where the partially exposed lock tongue passes through the sleeve.

[0011] Preferably, the ferrule has two opposite outer walls connected to the driving part.

[0012] Preferably, anti-slip patterns are further provided. When the driving member is fixedly connected to the first locking tongue, the anti-slip patterns are provided on the driving member; when the driving member is the ferrule, the anti-slip patterns are provided on the driving portion.

[0013] Preferably, the first locking tongue or the driving member is provided with a first check portion, and the first connecting seat is provided with a first limiting hole in which the first check portion can move, and the first locking tongue is limited by the cooperation of the first check portion and the first limiting hole to prevent the first locking tongue from detaching from the first connecting seat.

[0014] Preferably, the second locking tongue is fixedly connected to the first connecting seat;

[0015] Alternatively, the second connecting seat is provided with a second accommodating groove, and the second locking tongue is movably installed in the second accommodating groove and can move between the position of insertion into the second locking groove and withdrawal relative to the first connecting seat. A second top spring is also provided, and the second top spring is used to apply an elastic force to the second locking tongue to move in the direction of insertion into the second lock groove.

[0016] Preferably, when the second lock tongue is movably installed in the second accommodating groove, the second lock tongue is also provided with a second check portion, and the second accommodating groove is provided with a second limiting hole in which the second check portion can move, and the second lock tongue is limited by the cooperation of the second check portion and the second limiting hole to prevent the second lock tongue from disengaging from the second accommodating groove.

[0017] Preferably, a long strip-shaped arch portion is provided on one side of the first connecting seat away from the first locking groove, and a cover body is provided on the arch portion to cover the opening of the arch portion.

[0018] The utility model also proposes a door fence, including an outer door fence, an inner door fence and a locking mechanism, the locking mechanism is the above-mentioned locking mechanism, the inner door fence is rotatably connected to the outer door fence and the inner door fence can also move up and down relative to the outer door fence, the first connecting seat is arranged on the inner door fence, the first locking groove and the second locking groove are arranged on the outer door fence, the top of the second locking groove is open, the second locking tongue can be separated from the second locking groove from the top opening of the second locking groove as the inner door fence moves upward, or can be inserted into the second locking groove from the top opening of the second locking groove as the inner door fence moves downward to lock the inner door fence and the outer door fence.

[0019] Preferably, the first lock slot and the second lock slot are directly formed on the outer door rail;

[0020] Alternatively, a second connecting seat having the first locking groove and the second locking groove is further provided, and the second connecting seat is installed on the outer door rail.

[0021] Preferably, a moving block is movably installed in the first lock slot, and the moving block can move between a position flush with the first lock slot opening and a position away from the first lock slot opening. A third top spring is also provided, and the third top spring is used to apply an elastic force to the moving block to move in a direction flush with the first lock slot opening.

[0022] Preferably, the moving block is provided with a third check portion, and the first lock slot is provided with a third limiting hole in which the third check portion can move, and the moving block is limited by the cooperation of the third check portion and the third limiting hole to prevent the moving block from leaving the first lock slot, and one end of the third top spring elastically resists against the inner wall of the first lock slot, and the other end elastically resists against the moving block.

[0023] Preferably, the second connecting seat is further provided with a first inclined surface and a second inclined surface, the first inclined surface is provided on the outer wall of the first connecting seat corresponding to a position adjacent to the first locking groove opening, and the second inclined surface is provided on the outer wall of the first connecting seat corresponding to a position adjacent to the second locking groove opening.

[0024] Preferably, the inner door rail is rotatably connected to the outer door rail via a first hinge structure and a second hinge structure;

[0025] The first hinge structure comprises a seat body fixed to the outer door rail and a first swinging member fixed to the inner door rail, the first swinging member is provided with a vertically extending connecting shaft, the seat body is vertically formed with an axial hole open at both ends, the connecting shaft is inserted into the axial hole from top to bottom to realize the rotational cooperation between the swinging member and the seat body, the free end of the connecting shaft is provided with a check valve for limiting the connection shaft from being separated from the axial hole from bottom to top, the upper end opening of the axial hole is formed with a guide groove, and the swinging member is formed with a guide portion for contacting the guide groove at a position corresponding to the upper part of the guide groove, and during the swinging member swinging in the door opening direction, the swinging member can make an upward movement relative to the seat body through the cooperation of the guide portion and the guide groove, and the automatic door closing can also be realized through the cooperation of the guide portion and the guide groove;

[0026] 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 an end of the second swinging member away from the inner door rail. 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 a position entering the latch slot and a position away from the latch slot as the inner door rail swings. After the first lock tongue is inserted into the first lock slot, the latch block is located in the latch slot.

[0027] Preferably, a third connecting seat with a third locking groove is provided at a position below the outer door fence corresponding to the second connecting seat, and the top of the third locking groove is open. A third locking tongue is movably provided at a position of the inner door fence corresponding to the third locking groove, and the third locking tongue can move between an inserted third lock groove and a withdrawn position relative to the inner door fence, and a fourth top spring is provided, and the fourth top spring is used to apply an elastic force to the third locking tongue to move in the direction of the insertion slot, and the outer wall of the third connecting seat is formed with a third inclined surface, and the third inclined surface is adjacent to the opening of the third lock groove. The third locking tongue can detach from the top opening of the third lock groove or enter the third lock groove with the rising and descending movements of the inner door fence.

[0028] Preferably, the outer door rail is fixed to the installation position directly or by means of a fixing mechanism, the fixing mechanism includes a locking member movably screwed to the outer door rail, the locking member can move relative to the outer door rail between a position in close contact with and separation from the installation position, the locking member is also screwed to a locking member, the locking member can move relative to the locking member between a position in close contact with the outer door rail to lock and separate the locking member, a plurality of clip portions are formed at annular intervals on one side of the locking member close to the outer door rail, a recess is formed at a position of the outer door rail corresponding to the clip portion, and when the locking member is in close contact with the outer door rail, the clip portion is located in the recess.

[0029] Preferably, a plurality of convex patterns are provided on a side of the locking member that abuts against the position to be installed.

[0030] Preferably, the third lock tongue is provided with a fourth check portion, and the inner door fence is provided with a fourth limiting hole in which the fourth check portion can move, and the third lock tongue is limited by the cooperation of the fourth check portion and the fourth limiting hole to prevent the third lock tongue from detaching from the inner door fence.

[0031] Preferably, the outer door rail includes a cross bar and two vertical bars respectively fixed at both ends of the cross bar, and the inner door rail is located above the cross bar at a position corresponding to between the two vertical bars. The inner door rail is a frame-shaped component formed by multiple connecting rods or a sheet-shaped component with multiple hollows. When it is a frame-shaped component, the inner door rail is covered with software.

[0032] The technical solution of the utility model is provided with a first lock groove and a second lock groove on the outer door fence, and a locking mechanism is provided on the inner door fence. The inner door fence can swing relative to the outer door fence to form an opening or closing action and can move up and down relative to the outer door fence. The locking mechanism includes a first connecting seat provided with the first lock tongue and the second lock tongue. When the first lock groove and the second lock groove are respectively aligned with the first lock tongue and the second lock tongue of the locking mechanism, the first lock tongue and the second lock tongue can respectively extend into the first lock groove and the second lock groove to lock the inner door fence and the outer door fence. The first lock tongue can be driven by a driving member to move in the direction of exiting the first lock groove. It is necessary to first drive the first lock tongue to exit the first lock groove by the driving member, and then make the door fence rise so that the second lock tongue is separated from the second lock groove from the top opening of the second lock groove to achieve unlocking of the inner door fence and the outer door fence. Compared with the traditional method, the unlocking action is divided into two steps, the unlocking difficulty is increased, and it is not easy for children to learn, which effectively solves the problem that children can easily unlock the door by themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional diagram of the utility model;

[0034] Figure 2 It is a schematic diagram of the inner gate fence and the outer gate fence;

[0035] Figure 3 This is a cross-sectional view of the utility model;

[0036] Figure 4 is an exploded view of the locking mechanism;

[0037] Figure 5 for Figure 4 Schematic diagram from another angle. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] 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 indication is 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 indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used 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 defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0041] The utility model provides a locking mechanism.

[0042] In the embodiment of the utility model, Figures 1 to 5 As shown, the locking mechanism includes a first locking slot 100, a second locking slot 200, a first connecting seat 1 and a driving member.

[0043] The first connection seat 1 is provided with a first locking tongue 11 for inserting into the first locking groove 100 and a second locking tongue 12 for inserting into the second locking groove 200, and the first locking tongue 11 can move between the position of inserting into the first locking groove 100 and the position of withdrawing from the first connection seat 1; the driving member is connected to the first locking tongue, and is used to drive the first locking tongue 11 to perform the movement

[0044] Specifically, the driving member is fixedly connected to the first locking tongue 11, and the driving member is exposed outside after passing through the first connecting seat 1;

[0045] Alternatively, the driving member is a sleeve 13 movably mounted on the first locking tongue 11, the first connecting seat 1 is provided with a first accommodating groove 14 in which the sleeve 13 can move, the first locking tongue 11 partially passes through the sleeve 13 and is exposed outside, the sleeve 13 can drive the first locking tongue 11 to move between the partially exposed locking tongue inserted into the first locking groove 100 and the position away from it, the outer wall of the sleeve 13 is connected with a driving part 131, the driving part 131 passes through the first connecting seat 1 and is exposed outside, and a first top spring 15 is further provided, the first top spring 15 is used to apply an elastic force to the first locking tongue 11 to move in the direction of partially passing through the sleeve 13. The first locking tongue 11 can be forced to move in the direction away from the first locking groove 100 by contacting the exposed part of the first locking tongue 11 through an external force, so as to cooperate with the elastic force applied by the first top spring 15 to automatically insert the first locking tongue 11 into the first locking groove 100 to form an automatic lock. When unlocking, the first locking tongue 11 can be driven by the driving member.

[0046] Of course, when the driving member is fixedly connected to the first locking tongue 11 , the first top spring 15 can also apply an elastic force to the first locking tongue 11 to move in the direction of inserting into the first locking groove 100 .

[0047] It can be understood that the first connecting seat 1 avoids the position of the movement trajectory of the driving part 131 to facilitate the movement of the driving member. When the driving member is fixedly connected to the first locking tongue 11, the position of the movement trajectory of the driving member is avoided.

[0048] Specifically, the ferrule 13 has two opposite outer walls connected to the driving part 131 .

[0049] Specifically, anti-skid patterns are further provided. When the driving member is fixedly connected to the first locking tongue 11 , the anti-skid patterns are provided on the driving member; when the driving member is the ferrule 13 , the anti-skid patterns are provided on the driving portion 131 .

[0050] Specifically, the first locking tongue 11 or the driving member is provided with a first non-return portion 132, and the first connecting seat 1 is provided with a first limiting hole in which the first non-return portion 132 can move, and the first locking tongue 11 is limited by the cooperation of the first non-return portion 132 and the first limiting hole to prevent the first locking tongue 11 from being separated from the first connecting seat 1. In this embodiment, after the first locking tongue 11 is inserted into the first locking groove 100, the first non-return portion 132 abuts against the hole wall of the first limiting hole to limit the first locking tongue 11.

[0051] Specifically, the second locking tongue 12 is fixedly connected to the first connecting seat 1. When closing the door, the door rail needs to be raised so that the second locking tongue enters the second locking groove from the top opening of the second locking groove;

[0052] Alternatively, the second connecting seat 5 is provided with a second accommodating groove 17, and the second locking tongue 12 is movably installed in the second accommodating groove 17 and can move between the position of insertion into the second locking groove 200 and withdrawal relative to the first connecting seat 1. A second top spring 18 is also provided, and the second top spring 18 is used to apply an elastic force to the second locking tongue 12 to move in the direction of insertion into the second locking groove 200.

[0053] Specifically, when the second locking tongue 12 is movably installed in the second receiving groove 17, the second locking tongue 12 is further provided with a second check portion 121, and the second receiving groove 17 is provided with a second limiting hole 19 in which the second check portion 121 can move, and the second locking tongue 12 is limited by the cooperation of the second check portion 121 and the second limiting hole 19 to prevent the second locking tongue 12 from being separated from the second receiving groove 17. In this embodiment, after the second locking tongue 12 is inserted into the second locking groove 200, the second check portion 121 abuts against the hole wall of the second limiting hole 19 to limit the second locking tongue 12.

[0054] Specifically, a long strip-shaped arch 10 is provided on one side of the first connection seat 1 away from the first lock slot 100, and a cover 2 is provided on the arch 10 to cover the opening of the arch 10. The arch 10 and the cover 2 can cooperate to clamp and fix a part of the inner door rail 4 so as to fix the first connection seat 1 on the inner door rail 4. Similarly, the first connection seat 1 can also be fixed on the outer door rail 3.

[0055] Specifically, the cover body 2 is fixed to the arch 10 by screws or a snap-fit ​​structure. When the snap-fit ​​structure is used, reference may be made to the prior art, and the specific structural principle will not be described in detail here.

[0056] The utility model also proposes a door fence, including an outer door fence 3, an inner door fence 4 and a locking mechanism, wherein the inner door fence 4 is rotatably connected to the outer door fence 3 and the inner door fence 4 can also move up and down relative to the outer door fence 3, the first connecting seat 1 is arranged on the inner door fence 4, the first locking groove 100 and the second locking groove 200 are arranged on the outer door fence 3, the top of the second locking groove 200 is open, and the second locking tongue 12 can be separated from the second locking groove 200 from the top opening of the second locking groove 200 as the inner door fence 4 moves upward, or inserted into the second locking groove 200 from the top opening of the second locking groove 200 as the inner door fence 4 moves downward to lock the inner door fence 4 and the outer door fence 3. For other specific contents of the locking mechanism, reference can be made to the above-mentioned embodiments. Since the present door fence adopts all the technical solutions of all the embodiments of the above-mentioned locking mechanism, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0057] Specifically, the first lock slot 100 and the second lock slot 200 are directly formed on the outer door rail 3;

[0058] Alternatively, a second connection seat 5 having the first locking slot 100 and the second locking slot 200 is further provided, and the second connection seat 5 is mounted on the outer door 3. The second connection seat 5 is directly plugged into the outer door 3 or is locked by screws or fixed by a buckle structure. When the buckle structure is used for fixing, the prior art can be directly referred to, and its specific structural principle will not be described in detail here.

[0059] Specifically, a moving block 51 is movably installed in the first lock slot 100, and the moving block 51 can move between a position flush with the opening of the first lock slot 100 and a position away from the opening of the first lock slot 100. A third top spring 52 is also provided, and the third top spring 52 is used to apply an elastic force to the moving block 51 to move in a direction flush with the opening of the first lock slot 100. This prevents debris from entering the first lock slot 100, resulting in the first lock tongue 11 being unable to be inserted into the first lock slot 100.

[0060] Specifically, the moving block 51 is provided with a third check portion 511, and the first lock groove 100 is provided with a third limiting hole in which the third check portion 511 can move, and the moving block 51 is limited by the third check portion 511 and the third limiting hole to prevent the moving block 51 from leaving the first lock groove 100, and one end of the third top spring 52 elastically resists against the inner wall of the first lock groove 100, and the other end elastically resists against the moving block 51.

[0061] Specifically, the elastic force applied by the third top spring 52 to the moving block 51 should be smaller than the elastic force applied by the first top spring 15 to the first locking tongue 11 , so that the moving block 51 can be pushed away during the process of the first locking tongue 11 being inserted into the first locking slot 100 .

[0062] Specifically, the first locking slot 100 is T-shaped, and the moving block 51 is adapted to the first locking slot 100 .

[0063] Specifically, the second connection seat 5 is further provided with a first inclined surface 101 and a second inclined surface 102, wherein the first inclined surface 101 is provided at a position of the outer wall of the first connection seat 1 corresponding to the position adjacent to the opening of the first lock slot 100, and the second inclined surface 102 is provided at a position of the outer wall of the first connection seat 1 corresponding to the position adjacent to the opening of the second lock slot 200. It should be noted that the opening of the second lock slot 200 mentioned here is the opening of the second lock slot 200 close to the side of the second lock slot 200.

[0064] Specifically, the inner door fence 4 is rotatably connected to the outer door fence 3 through a first hinge structure and a second hinge structure;

[0065] The first hinge structure includes a seat body 61 fixed to the outer door rail 3 and a first swinging member 62 fixed to the inner door rail 4, the first swinging member 62 is provided with a vertically extending connecting shaft 63, the seat body 61 is vertically formed with an axis hole 64 with two ends open, the connecting shaft 63 is inserted into the axis hole 64 from top to bottom to realize the rotational cooperation between the swinging member and the seat body 61, the free end of the connecting shaft 63 is provided with a check 65 for limiting the connection shaft 63 from being separated from the axis hole 64 from bottom to top, the upper end opening of the axis hole 64 is formed with a guide groove 66, the swinging member is formed with a guide portion for contacting the guide groove 66 at a position above the guide groove 66, and during the swinging member swinging in the door opening direction, the swinging member can be lifted relative to the seat body 61 through the cooperation of the guide portion and the guide groove;

[0066] The second hinge structure includes a second swinging member 71 fixed to the inner door fence 4 and a latch 72 inserted into the outer door fence 3 (the latch 72 is not fixedly connected to the outer door fence 3), the latch 72 is rotatably plugged with the end of the second swinging member 71 away from the inner door fence 4, a latch position is formed on the upper end of the latch 72, and a block 73 adapted to the latch position is formed on the second swinging member 71, and the block 73 can move between the position of entering the slot and the position of being away from the slot as the inner door fence 4 swings, and after the first lock tongue 11 is inserted into the first lock slot 100, the block 73 is located in the slot. Specifically, the connecting shaft 63 is also provided with a sleeve of a spring 67, one end of which is elastically abutted against the check head 65, and the other end is elastically abutted against the inner top wall of the shaft hole 64.

[0067] Specifically, the outer door fence 3 is provided with a third connecting seat 81 with a third locking groove 82 at a position corresponding to the second connecting seat 5, and the top of the third locking groove 82 is open. The inner door fence 4 is provided with a third locking tongue 83 at a position corresponding to the third locking groove 82. The third locking tongue 83 can move between the position of inserting into the third locking groove 82 and withdrawing relative to the inner door fence 4. A fourth top spring 84 is also provided. The fourth top spring 84 is used to apply an elastic force to the third locking tongue 83 to move in the direction of inserting into the slot. The outer wall of the third connecting seat 81 is formed with a third inclined surface 85, and the third inclined surface 85 is adjacent to the opening of the third locking groove 82. The third locking tongue 83 can detach from or enter the third locking groove 82 from the top opening of the third locking groove 82 as the inner door fence 4 moves upward and downward. When closing the door, the third inclined surface 85 can directly contact the third locking tongue 83 to force the third locking tongue 83 to move away from the third locking groove 82 until the third locking tongue 83 is aligned with the third locking groove 82. Then the elastic force applied by the fourth top spring 84 drives the third locking tongue 83 to be inserted into the third locking groove 82.

[0068] Specifically, the outer door fence 3 is fixed to the position to be installed directly or through a fixing mechanism, and the fixing mechanism includes a locking member 91 movably screwed to the outer door fence 3, and the locking member 91 can move between a position in close contact with and a position separated from the position to be installed relative to the outer door fence 3, and the locking member 91 is also screwed to a locking member 92, and the locking member 92 can move between a position in close contact with the outer door fence 3 to lock and separate the locking member 91 relative to the locking member 91, and a plurality of clamping portions 93 are formed at annular intervals on one side of the locking member 92 close to the outer door fence 3, and a recessed portion 94 is formed at a position corresponding to the clamping portion 93 of the outer door fence 3, and when the locking member 92 is in close contact with the outer door fence 3, the clamping portion 93 is located in the recessed portion 94. It should be noted that the position to be installed is mainly a wall.

[0069] Specifically, a plurality of convex patterns 95 are formed on a surface of the locking member 91 that abuts against the position to be installed.

[0070] Specifically, the third lock tongue 83 is provided with a fourth check portion 86, and the inner door fence 4 is provided with a fourth limiting hole in which the fourth check portion 86 can move, and the third lock tongue 83 is limited by the fourth check portion 86 cooperating with the fourth limiting hole to prevent the third lock tongue 83 from detaching from the inner door fence 4.

[0071] Specifically, the outer door fence 3 includes a cross bar and two vertical bars respectively fixed at both ends of the cross bar. The inner door fence 4 is located above the cross bar and corresponds to a position between the two vertical bars. The inner door fence 4 is a frame-shaped component formed by multiple connecting rods or a sheet-like component with multiple hollows. When it is a frame-shaped component, the inner door fence 4 is covered with software. Of course, when it is a sheet-like component, it can also be covered with software.

[0072] The technical solution of the utility model is provided with a first lock groove and a second lock groove on the outer door fence, and a locking mechanism is provided on the inner door fence. The inner door fence can swing relative to the outer door fence to form an opening or closing action and can move up and down relative to the outer door fence. The locking mechanism includes a first connecting seat provided with the first lock tongue and the second lock tongue. When the first lock groove and the second lock groove are respectively aligned with the first lock tongue and the second lock tongue of the locking mechanism, the first lock tongue and the second lock tongue can respectively extend into the first lock groove and the second lock groove to lock the inner door fence and the outer door fence. The first lock tongue can be driven by a driving member to move in the direction of exiting the first lock groove. It is necessary to first drive the first lock tongue to exit the first lock groove by the driving member, and then make the door fence rise so that the second lock tongue is separated from the second lock groove from the top opening of the second lock groove to achieve unlocking of the inner door fence and the outer door fence. Compared with the traditional method, the unlocking action is divided into two steps, the unlocking difficulty is increased, and it is not easy for children to learn, which effectively solves the problem that children can easily unlock the door by themselves.

[0073] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A locking mechanism, characterized in that: include: A first locking groove (100) and a second locking groove (200); A first connecting seat (1), the first connecting seat (1) being provided with a first locking tongue (11) for inserting into the first locking groove (100) and a second locking tongue (12) for inserting into the second locking groove (200), the first locking tongue (11) being movable relative to the first connecting seat (1) between a position of being inserted into the first locking groove (100) and a position of being withdrawn; A driving member, the driving member is connected to the first locking tongue and is used to drive the first locking tongue (11) to perform the movement.

2. The locking mechanism according to claim 1, characterized in that: The driving member is fixedly connected to the first locking tongue (11), and the driving member is exposed after passing through the first connecting seat (1); Alternatively, the driving member is a sleeve (13) movably mounted on the first locking tongue (11); the first connecting seat (1) is provided with a first accommodating groove (14) in which the sleeve (13) can move; a portion of the first locking tongue (11) passes through the sleeve (13) and is exposed to the outside; the sleeve (13) can drive the first locking tongue (11) to move between a position where the portion of the locking tongue exposed to the outside is inserted into the first locking groove (100) and a position away from the position; an outer wall of the sleeve (13) is connected to a driving part (131); the driving part (131) passes through the first connecting seat (1) and is exposed to the outside; a first top spring (15) is further provided; the first top spring (15) is used to apply an elastic force to the first locking tongue (11) to move in a direction where the portion passes through the sleeve (13).

3. The locking mechanism according to claim 2, characterized in that: The ferrule (13) has two opposite outer walls connected to the driving part (131).

4. The locking mechanism according to claim 2, characterized in that: Anti-skid patterns are also provided. When the driving member is fixedly connected to the first locking tongue (11), the anti-skid patterns are provided on the driving member; when the driving member is the ferrule (13), the anti-skid patterns are provided on the driving portion (131).

5. The locking mechanism according to claim 1, wherein: The first locking tongue (11) or the driving member is provided with a first non-return portion (132), and the first connecting seat (1) is provided with a first limiting hole in which the first non-return portion (132) can move, and the first locking tongue (11) is limited by the cooperation of the first non-return portion (132) and the first limiting hole to prevent the first locking tongue (11) from being separated from the first connecting seat (1).

6. The locking mechanism according to claim 1, characterized in that: The second locking tongue (12) is fixedly connected to the first connecting seat (1); Alternatively, the second connecting seat (5) is provided with a second accommodating groove (17), the second locking tongue (12) is movably mounted in the second accommodating groove (17) and can move relative to the first connecting seat (1) between a position of being inserted into the second locking groove (200) and a position of being withdrawn, and a second top spring (18) is further provided, the second top spring (18) being used to apply an elastic force to the second locking tongue (12) to move in a direction of being inserted into the second locking groove (200).

7. The locking mechanism according to claim 6, characterized in that: When the second locking tongue (12) is movably mounted in the second receiving groove (17), the second locking tongue (12) is further provided with a second non-return portion (121), and a second limiting hole (19) is provided in the second receiving groove (17) in which the second non-return portion (121) can move, and the second locking tongue (12) is limited by the cooperation of the second non-return portion (121) and the second limiting hole (19) to prevent the second locking tongue (12) from being separated from the second receiving groove (17).

8. The locking mechanism according to claim 1, characterized in that: A long strip-shaped arch portion (10) is provided on one side of the first connection seat (1) away from the first locking groove (100), and a cover body (2) is provided on the arch portion (10) to cover the opening of the arch portion (10).

9. A gate, characterized in that: The invention comprises an outer door fence (3), an inner door fence (4) and a locking mechanism as claimed in any one of claims 1 to 8, wherein the inner door fence (4) is rotatably connected to the outer door fence (3) and the inner door fence (4) can also move up and down relative to the outer door fence (3), the first connecting seat (1) is arranged on the inner door fence (4), the first locking groove (100) and the second locking groove (200) are arranged on the outer door fence (3), the top of the second locking groove (200) is open, and the second locking tongue (12) can be separated from the second locking groove (200) from the top opening of the second locking groove (200) as the inner door fence (4) moves upward, or can be inserted into the second locking groove (200) from the top opening of the second locking groove (200) as the inner door fence (4) moves downward, so as to lock the inner door fence (4) and the outer door fence (3).

10. The gate according to claim 9, characterized in that: The first locking groove (100) and the second locking groove (200) are directly formed on the outer door rail (3); Alternatively, a second connection seat (5) having the first locking groove (100) and the second locking groove (200) is further provided, and the second connection seat (5) is mounted on the outer door rail (3).

11. The gate according to claim 9, characterized in that: A moving block (51) is movably installed in the first locking slot (100), and the moving block (51) can move between a position flush with the opening of the first locking slot (100) and a position away from the opening of the first locking slot (100). A third top spring (52) is also provided, and the third top spring (52) is used to apply an elastic force to the moving block (51) to move in a direction flush with the opening of the first locking slot (100).

12. The door barrier according to claim 11, characterized in that: The moving block (51) is provided with a third non-return portion (511); the first locking groove (100) is provided with a third limiting hole in which the third non-return portion (511) can move; the third non-return portion (511) cooperates with the third limiting hole to limit the moving block (51) so as to prevent the moving block (51) from escaping from the first locking groove (100); one end of the third top spring (52) elastically abuts against the inner wall of the first locking groove (100), and the other end elastically abuts against the moving block (51).

13. The door barrier according to claim 10, characterized in that: The second connecting seat (5) is further provided with a first inclined surface (101) and a second inclined surface (102); the first inclined surface (101) is provided at a position of the outer wall of the first connecting seat (1) corresponding to and adjacent to the opening of the first locking groove (100); and the second inclined surface (102) is provided at a position of the outer wall of the first connecting seat (1) corresponding to and adjacent to the opening of the second locking groove (200).

14. The gate according to claim 9, characterized in that: The inner door fence (4) is rotatably connected to the outer door fence (3) via a first hinge structure and a second hinge structure; The first hinge structure comprises a seat body (61) fixed to the outer door rail (3) and a first swinging member (62) fixed to the inner door rail (4), the first swinging member (62) being provided with a vertically extending connecting shaft (63), the seat body (61) being vertically formed with an axial hole (64) with both ends open, the connecting shaft (63) being inserted into the axial hole (64) from top to bottom to realize the rotational cooperation between the swinging member and the seat body (61), the free end of the connecting shaft (63) being provided with a check valve (65) for limiting the connection shaft (63) from being separated from the axial hole (64) from bottom to top, the upper end opening of the axial hole (64) being formed with a guide groove (66), the swinging member being formed with a guide portion for contacting the guide groove (66) at a position above the guide groove (66), and in the process of the swinging member swinging in the door opening direction, the swinging member can make an upward movement relative to the seat body (61) through the cooperation between the guide portion and the guide groove; The second hinge structure comprises a second swinging member (71) fixed to the inner door rail (4) and a latch (72) inserted into the outer door rail (3); the latch (72) is rotatably plugged with an end of the second swinging member (71) away from the inner door rail (4); 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 being away from the latch slot as the inner door rail (4) swings; after the first lock tongue (11) is inserted into the first lock slot (100), the latch block (73) is located in the latch slot.

15. The gate according to claim 9, characterized in that: The outer door fence (3) is provided with a third connecting seat (81) having a third locking groove (82) at a position corresponding to the lower side of the second connecting seat (5), the top of the third locking groove (82) is open, and the inner door fence (4) is provided with a third locking tongue (83) at a position corresponding to the third locking groove (82), the third locking tongue (83) can move between the position of inserting into the third locking groove (82) and the position of withdrawing relative to the inner door fence (4), and a fourth top spring (84) is further provided, the fourth top spring (84) is used to apply an elastic force to the third locking tongue (83) to move in the direction of inserting into the slot, the outer wall of the third connecting seat (81) is formed with a third inclined surface (85), the third inclined surface (85) is adjacent to the opening of the third locking groove (82), and the third locking tongue (83) can be separated from the top opening of the third locking groove (82) or enter the third locking groove (82) as the inner door fence (4) moves upward and downward.

16. The gate according to claim 9, characterized in that: The outer door fence (3) is fixed to the position to be installed directly or through a fixing mechanism, the fixing mechanism comprising a locking member (91) movably screwed to the outer door fence (3), the locking member (91) can move between a position in close contact with and a position separated from the position to be installed relative to the outer door fence (3), the locking member (91) is also screwed to a locking member (92), the locking member (92) can move between a position in close contact with the outer door fence (3) to lock and a position separated relative to the locking member (91), a plurality of locking portions (93) are formed at annular intervals on one side of the locking member (92) close to the outer door fence (3), a recess (94) is formed on the outer door fence (3) at a position corresponding to the retaining portion (93), and when the locking member (92) is in close contact with the outer door fence (3), the retaining portion (93) is located in the recess (94).

17. The gate according to claim 16, characterized in that: A plurality of convex patterns (95) are provided on one side of the locking member (91) that abuts against the position to be installed.

18. The gate according to claim 15, characterized in that: The third locking tongue (83) is provided with a fourth non-return portion (86), and the inner door fence (4) is provided with a fourth limiting hole in which the fourth non-return portion (86) can move, and the third locking tongue (83) is limited by the cooperation between the fourth non-return portion (86) and the fourth limiting hole to prevent the third locking tongue (83) from escaping from the inner door fence (4).

19. The gate according to claim 9, characterized in that: The outer door fence (3) comprises a cross bar and two vertical bars respectively fixed at both ends of the cross bar. The inner door fence (4) is located above the cross bar and corresponds to a position between the two vertical bars. The inner door fence (4) 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 (4) is covered with software.

Images