A lock tongue structure

Abstract

The present application provides a kind of lock tongue structure, be arranged in lock body shell, the lock body shell is installed on door leaf, by setting small lock tongue, when door leaf is in closed state, small lock tongue is extruded in lock body shell by door frame, further can detect the state of small lock tongue by detection component inside lock body shell to determine that door leaf has been closed, since second elastic member is arranged between small lock tongue and small lock tongue fixed plate, so even in the case of larger door gap, when door leaf is in closed state, small lock tongue still be extruded in lock body shell by door frame, the state of door leaf can be accurately judged by detecting small lock tongue.Further, in the open state of door leaf, the unlocking of small lock tongue to big lock tongue makes that big lock tongue can lose the bondage of linkage trigger part and extend lock body shell under the action of first elastic member, the state of door leaf can be judged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of door lock, in particular to a lock tongue structure. BACKGROUND

[0002] With the increasing population, the number of houses is also increasing. The door lock is one of the important structures to control the opening and closing of the house. Therefore, people's expectations and requirements for door locks are also increasing. At present, the door lock usually adopts a motor lock, that is, the lock core is driven to rotate by a motor to realize opening and closing.

[0003] Chinese patent CN112459623A discloses an electric lock body, which comprises:

[0004] a housing having a receiving space inside;

[0005] a drive mechanism arranged in the receiving space, the drive mechanism comprising a motor, a planetary gear assembly, and a retainer; the planetary gear assembly comprises a ring gear, a planet wheel, and a sun wheel, the motor is rotationally connected to the sun wheel, the ring gear has a containing space, the planet wheel and part of the sun wheel are arranged in the containing space, and the planet wheel is rotationally connected between the sun wheel and the ring gear; the retainer is arranged on one side of the planetary gear assembly, the ring gear and the sun wheel abut against the retainer, and the planet wheel is connected to the retainer;

[0006] When the ring gear is in a fixed state, the sun wheel is driven to rotate by the motor to make the planet wheel rotate relative to the ring gear, thereby making the retainer rotate; or, when the sun wheel is in a fixed state, the ring gear can be controlled to rotate to make the planet wheel rotate relative to the sun wheel, thereby making the retainer rotate;

[0007] a lock tongue, at least part of the lock tongue is arranged in the receiving space, the lock tongue is connected to the retainer, and when the retainer rotates, the retainer can drive the lock tongue to move to switch the lock tongue between a state of being received in the housing and a state of protruding out of the housing.

[0008] The above-mentioned electric lock body can finally make the planet wheel rotate through the cooperation of the ring gear, the planet wheel, and the sun wheel, thereby driving the retainer to rotate and finally driving the lock tongue connected to the retainer to move, so as to switch the lock tongue between a state of being received in the housing and a state of protruding out of the housing, thereby solving the problem that if the motor or the drive mechanism fails, the entire motor lock cannot move, the user cannot open the door from the house, and the difficulty and risk of opening the door are greatly increased.

[0009] However, the electric lock body cannot accurately determine the opening and closing of the door leaf, and the existing method for determining the opening and closing of the door leaf generally sets a magnetic attraction member on the door frame to cooperate with a magnetic sensor on the door leaf, but when the door gap is too large, misjudgment is prone to occur. SUMMARY

[0010] Therefore, the technical problem to be solved by the present application is that the electric lock body in the prior art cannot accurately determine the opening and closing of the door leaf, and the existing method for determining the opening and closing of the door leaf generally sets a magnetic attraction member on the door frame to cooperate with a magnetic sensor on the door leaf, but when the door gap is too large, misjudgment is prone to occur.

[0011] To this end, the present application provides a latch structure arranged in a lock body shell mounted on a door leaf, comprising:

[0012] A latch fixed plate is movably connected with the lock body shell;

[0013] A linkage trigger is movably connected with the latch fixed plate;

[0014] A large latch is connected with the lock body shell, and a first elastic member is arranged between the large latch and the lock body shell;

[0015] A small latch is connected with the lock body shell, and a second elastic member is arranged between the small latch and the lock body shell;

[0016] During the closing process of the door leaf, the linkage trigger is connected with the large latch, and the latch fixed plate is configured to drive the large latch into the lock body shell under the action of an external force through the linkage trigger;

[0017] In the closed state of the door leaf, the latch fixed plate is configured to extend out of the lock body shell and drive the linkage trigger and the large latch to separate under the action of an external force, and the large latch extends out of the lock body shell under the action of the first elastic member; and the small latch is pressed by the door frame and is in the lock body shell;

[0018] During the opening process of the door leaf, the linkage trigger is connected with the large latch, and the latch fixed plate is configured to drive the large latch into the lock body shell under the action of an external force through the linkage trigger;

[0019] In the open state of the door leaf, the small latch moves to the outside of the lock body shell under the action of the second elastic member, so that the small latch abuts against the linkage trigger to drive the linkage trigger and the large latch to separate, and the large latch extends out of the lock body shell under the action of the first elastic member.

[0020] Optionally, the latch structure further comprises:

[0021] A linkage plate is fixedly connected to one side of the lock tongue fixing plate, and the other side of the linkage plate is hingedly connected to the linkage trigger;

[0022] A third elastic member is connected between the linkage plate and the linkage trigger, and the third elastic member has an elastic force for driving the linkage trigger to be connected to the large lock tongue;

[0023] In the door leaf open state, the small lock tongue moves to the outside of the lock body shell to drive the linkage trigger to rotate around the linkage plate against the elastic force of the third elastic member, so as to separate from the large lock tongue.

[0024] Optionally, the large lock tongue trigger plate is arranged on the large lock tongue, and the trigger part is arranged on the linkage trigger;

[0025] In the door leaf closed state, the trigger part abuts against the outside of the large lock tongue trigger plate to drive the large lock tongue to move to the inside of the lock body shell;

[0026] In the door leaf open state, the trigger part is separated from the large lock tongue trigger plate.

[0027] Optionally, after the large lock tongue is extended out of the lock body shell under the action of the first elastic member, the lock tongue fixing plate drives the linkage trigger to move to the outside of the lock body shell under the action of external force, and the trigger part enters the outside of the large lock tongue trigger plate against the elastic force of the third elastic member.

[0028] Optionally, when the trigger part moves to the outside of the lock body shell, the trigger part is in sliding abutment with the large lock tongue trigger plate to drive the linkage trigger to rotate around the linkage plate against the elastic force of the third elastic member, so as to enter the outside of the large lock tongue trigger plate from the inside.

[0029] Optionally, the inside of the large lock tongue trigger plate is in a slope shape, the trigger part is a roller, and the trigger part enters the outside of the large lock tongue trigger plate through the slope-shaped inside of the large lock tongue trigger plate.

[0030] Optionally, a limiting part is arranged on the linkage plate, and the linkage trigger is adapted to abut against the limiting part, so that the trigger part is located at the large lock tongue trigger plate.

[0031] Optionally, an abutment part is arranged on the small lock tongue trigger plate;

[0032] One side of the linkage trigger protrudes to form an abutment adapter part, and the abutment part is adapted to abut against the abutment adapter part to drive the linkage trigger to rotate around the linkage plate against the elastic force of the third elastic member.

[0033] Optionally, the latch structure further comprises a small-latch fixing plate, fixed to the lock body shell, and having a through hole suitable for the small latch to pass through, and the second elastic member is arranged between the small-latch fixing plate and the end of the small latch.

[0034] Optionally, the latch structure further comprises a large-latch fixing plate, fixed to the lock body shell, and having a through hole suitable for the large latch to pass through, and the first elastic member is arranged between the large-latch fixing plate and the end of the large latch.

[0035] The present application provides a latch structure, which has the following advantages:

[0036] 1. The present application provides a latch structure arranged in a lock body shell, the lock body shell being mounted on a door leaf, comprising a latch fixing plate, a linkage trigger, a large latch and a small latch, the latch fixing plate being movably connected to the lock body shell; the linkage trigger being movably connected to the latch fixing plate; the large latch being connected to the lock body shell, and a first elastic member being arranged between the large latch and the lock body shell; the small latch being connected to the lock body shell, and a second elastic member being arranged between the small latch and the lock body shell; wherein, during the closing process of the door leaf, the linkage trigger is connected to the large latch, and the latch fixing plate is configured to be driven by the linkage trigger to enter the lock body shell together with the large latch under the action of an external force; in the closed state of the door leaf, the latch fixing plate is configured to extend out of the lock body shell and drive the linkage trigger to separate from the large latch under the action of an external force, the large latch extends out of the lock body shell under the action of the first elastic member, and the small latch is pressed into the lock body shell by a door frame; during the opening process of the door leaf, the linkage trigger is connected to the large latch, and the latch fixing plate is configured to be driven by the linkage trigger to enter the lock body shell together with the large latch under the action of an external force; in the open state of the door leaf, the small latch moves to the outside of the lock body shell under the action of the second elastic member, so that the small latch abuts against the linkage trigger to drive the linkage trigger to separate from the large latch, and the large latch extends out of the lock body shell under the action of the first elastic member.

[0037] The lock tongue structure has the following advantages: in the door leaf closed state, the lock tongue fixing plate is configured to extend out of the lock body shell under the action of external force and drive the linkage trigger and the large lock tongue to separate, the large lock tongue extends out of the lock body shell under the action of the first elastic member, and the small lock tongue is pressed by the door frame and is in the lock body shell; and in the door leaf open state, the small lock tongue moves to the outside of the lock body shell under the action of the second elastic member, the small lock tongue abuts against the linkage trigger to drive the linkage trigger and the large lock tongue to separate, the large lock tongue extends out of the lock body shell under the action of the first elastic member, and the small lock tongue is pressed by the door frame and is in the lock body shell. The small lock tongue is provided, the small lock tongue is pressed by the door frame and is in the lock body shell when the door leaf is in the closed state, and the state of the small lock tongue can be detected by the detection component in the lock body shell to determine that the door leaf is closed. The second elastic member is arranged between the small lock tongue and the small lock tongue fixing plate, so that the small lock tongue is still pressed by the door frame and is in the lock body shell when the door leaf is in the closed state even in the case that the door gap is large, and the state of the door leaf can be accurately determined by detecting the state of the small lock tongue.

[0038] 2. The lock tongue structure also comprises a linkage plate and a third elastic member, one side of the linkage plate is fixedly connected with the lock tongue fixing plate, the other side of the linkage plate is hingedly connected with the linkage trigger, and the third elastic member is connected between the linkage plate and the linkage trigger, the third elastic member has an elastic force for driving the linkage trigger to be connected with the large lock tongue; in the door leaf open state, the small lock tongue moves to the outside of the lock body shell to drive the linkage trigger to rotate around the linkage plate against the elastic force of the third elastic member to separate from the large lock tongue.

[0039] The lock tongue structure has the following advantages: in the door leaf closed state, the lock tongue fixing plate is configured to extend out of the lock body shell under the action of external force and drive the linkage trigger and the large lock tongue to separate, the large lock tongue extends out of the lock body shell under the action of the first elastic member, and the small lock tongue is pressed by the door frame and is in the lock body shell; and in the door leaf open state, the small lock tongue moves to the outside of the lock body shell under the action of the second elastic member, the small lock tongue abuts against the linkage trigger to drive the linkage trigger and the large lock tongue to separate, the large lock tongue extends out of the lock body shell under the action of the first elastic member, and the small lock tongue is pressed by the door frame and is in the lock body shell. The small lock tongue is provided, the small lock tongue is pressed by the door frame and is in the lock body shell when the door leaf is in the closed state, and the state of the small lock tongue can be detected by the detection component in the lock body shell to determine that the door leaf is closed. The second elastic member is arranged between the small lock tongue and the small lock tongue fixing plate, so that the small lock tongue is still pressed by the door frame and is in the lock body shell when the door leaf is in the closed state even in the case that the door gap is large, and the state of the door leaf can be accurately determined by detecting the state of the small lock tongue. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

[0041] Figure 1 The structure of the lock body suitable for the lock tongue structure provided in the embodiments of the present application is shown in the schematic view of the structure;

[0042] Figure 2An exploded view of the lock tongue structure provided in the embodiment of the present application;

[0043] Figure 3 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being outside the lock body shell;

[0044] Figure 4 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell; Figure 3 A back structure schematic view of the lock tongue structure;

[0045] Figure 5 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell;

[0046] Figure 6 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell;

[0047] Figure 7 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell;

[0048] Figure 8 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell;

[0049] Figure 9 A structure schematic view of the lock tongue structure provided in the embodiment of the present application when being inside the lock body shell;

[0050] BRIEF DESCRIPTION OF THE DRAWINGS

[0051] 1 - lock body shell;

[0052] 2 - lock tongue fixing plate;

[0053] 3 - linkage trigger; 31 - trigger part;

[0054] 41 - large lock tongue; 42 - first elastic member; 43 - large lock tongue trigger plate;

[0055] 51 - small lock tongue; 52 - second elastic member; 53 - small lock tongue trigger plate;

[0056] 6 - linkage plate; 61 - limiting part;

[0057] 7 - third elastic member;

[0058] 8 - small lock tongue fixing plate;

[0059] 9 - large lock tongue fixing plate. DETAILED DESCRIPTION

[0060] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0061] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0062] Embodiment

[0063] The present embodiment provides a latch structure arranged in a lock body shell 1 mounted on a door leaf, as shown in Figures 1 to 9 The latch structure includes a latch fixed plate 2, a linkage trigger 3, a large latch 41, a first elastic member 42, a large latch trigger plate 43, a small latch 51, a second elastic member 52, a small latch trigger plate 53, a linkage plate 6, a limiting portion 61, a third elastic member 7, a small latch fixed plate 8 and a large latch fixed plate 9.

[0064] In the present embodiment, as shown in Figure 1 A slot for placing the latch fixed plate 2, the large latch 41 and the small latch 51 is arranged on the upper side of the lock body shell 1, and the lower end of the latch fixed plate 2 is connected to a linkage assembly inside the lock body shell 1. The linkage assembly can adopt the existing lock cylinder structure inside the lock body, and the latch fixed plate 2 can be extended or retracted into the lock body shell 1 by a handle or a key or a motor. This step is a prior art, so it will not be described in detail here.

[0065] In the present embodiment, as shown in Figures 1 to 9 The lower end of the latch fixed plate 2 is fixedly connected to the linkage plate 6, which is U-shaped, and the left arm of the linkage plate 6 is fixed to the lower end of the latch fixed plate 2 by a screw, and the right arm of the linkage plate 6 is connected to the linkage trigger 3. The linkage trigger 3 is hinged to the right arm of the linkage plate 6, so that the linkage trigger 3 can rotate relative to the right arm of the linkage plate 6.

[0066] In the present embodiment, as shown in Figures 1 to 9As shown, the large bolt 41 is arranged on one side of the bolt fixing plate 2, and is connected with the lock body shell 1 through the large bolt fixing plate 9. Specifically, as shown in Figure 2 As shown, the large bolt fixing plate 9 is in L shape, and one side thereof is fixedly connected with the lock body shell 1, so that the other side thereof is arranged perpendicularly to the lock body shell 1. Meanwhile, a through hole for passing the large bolt 41 is arranged on the side of the large bolt fixing plate 9 which is perpendicular to the lock body shell 1. The bottom of the large bolt 41 is fixedly connected with the large bolt trigger plate 43 after passing through the large bolt fixing plate 9. One of the functions of the large bolt trigger plate 43 is to abut against the large bolt fixing plate 9, so as to prevent the large bolt 41 from being separated from the large bolt fixing plate 9. The first elastic member 42 is arranged between the large bolt 41 and the lock body shell 1. The first elastic member 42 is a columnar spring. The first elastic member 42 provides elastic force for the large bolt 41, so that the large bolt 41 can be extended out of the lock body shell 1 under the elastic force of the first elastic member 42.

[0067] In the embodiment, as shown in Figures 1 to 9 The linkage trigger 3 is arranged between the large bolt 41 and the bolt fixing plate 2, and the trigger portion 31 is protruded on the side of the linkage trigger 3 which is close to the large bolt 41. Correspondingly, the large bolt trigger plate 43 is protruded in the form of a plate structure towards the linkage trigger 3 on the side thereof which is close to the linkage trigger 3. As shown in Figures 3 to 9 For the convenience of description, the line a is the edge of the notch of the lock body shell 1. When the bolt fixing plate 2 and the large bolt 41 are both extended out of the lock body shell 1, the trigger portion 31 of the linkage trigger 3 is located on the outside of the plate structure on the large bolt trigger plate 43, and the trigger portion 31 of the linkage trigger 3 is separated from the plate structure on the large bolt trigger plate 43.

[0068] When the bolt fixing plate 2 is driven to move towards the inside of the lock body shell 1 by an external force such as a handle, a key or a motor during the closing process of the door leaf, the bolt fixing plate 2 drives the linkage trigger 3 to move towards the inside of the lock body shell 1 through the linkage plate 6. In this process, the trigger portion 31 on the linkage trigger 3 abuts against the plate structure on the large bolt trigger plate 43, and thus can drive the large bolt 41 to move towards the inside of the lock body shell 1 against the elastic force of the first elastic member 42, so as to complete the process that the bolt fixing plate 2 and the large bolt 41 are retracted into the lock body shell 1. Specifically, as shown in Figure 3 Figure 5 and Figure 6 As shown, Figure 3 is the state when the bolt fixing plate 2 and the large bolt 41 are extended out of the lock body shell 1; Figure 5 is the state when the bolt fixing plate 2 and the large bolt 41 are partially retracted into the lock body shell 1. At this time, the trigger portion 31 on the linkage trigger 3 abuts against the plate structure on the large bolt trigger plate 43; Figure 6 is the state when the bolt fixing plate 2 and the large bolt 41 are completely retracted into the lock body shell 1.

[0069] In the embodiment, the small latch 51 is between the large latch 41 and the latch fixing plate 2, and is connected with the lock body shell 1 through the small latch fixing plate 8. Specifically, as shown in Figure 2 The small latch fixing plate 8 is also L-shaped, one side of which is fixedly connected with the lock body shell 1, so that the other side is arranged perpendicularly to the lock body shell 1. A through hole for passing the small latch 51 is arranged on the side of the small latch fixing plate 8 which is perpendicular to the lock body shell 1. The small latch 51 is fixedly connected with the small latch trigger plate 53 after passing through the small latch fixing plate 8. One of the functions of the small latch trigger plate 53 is to abut against the small latch fixing plate 8, so as to prevent the small latch 51 from being separated from the small latch fixing plate 8. The second elastic member 52 is arranged between the small latch 51 and the lock body shell 1. The second elastic member 52 is also a columnar spring. The second elastic member 52 provides elastic force for the small latch 51, so that the small latch 51 can be extended out of the lock body shell 1 under the elastic force of the second elastic member 52.

[0070] After the latch fixing plate 2 and the large latch 41 are completely retracted into the lock body shell 1, the door leaf is in a closed state. Since the door leaf is inside the door frame, as shown in Figure 6 The small latch 51 is pressed by the door frame and is in the lock body shell 1. At this time, in order to lock the door leaf and the door frame, the latch fixing plate 2 is extended out of the lock body shell 1 under the action of external force such as a handle, a key or a motor, and drives the linkage trigger 3 to separate from the large latch trigger plate 43. The large latch 41 is extended out of the lock body shell 1 under the action of the first elastic member 42, and the door is locked.

[0071] When the door leaf is opened, the latch fixing plate 2 is driven to move into the lock body shell 1 by external force such as a handle, a key or a motor. The latch fixing plate 2 drives the linkage trigger 3 to move into the lock body shell 1 through the linkage plate 6. In this process, the trigger part 31 on the linkage trigger 3 abuts against the plate-shaped structure on the large latch trigger plate 43, and drives the large latch 41 to move into the lock body shell 1 against the elastic force of the first elastic member 42. This process is the same as the operation of retracting the latch fixing plate 2 and the large latch 41 into the lock body shell 1 in the above-mentioned process of closing the door leaf.

[0072] In the embodiment, as shown in Figures 1 to 9 The upper end of the linkage trigger 3 protrudes towards the latch fixing plate 2, so that the linkage trigger 3 is inverted L-shaped. Figure 2 As shown in The side of the small latch trigger plate 53 close to the latch fixing plate 2 protrudes towards the latch fixing plate 2 and is plate-shaped structure. The plate-shaped structure is used to abut against the protruding part on the linkage trigger 3, and is below the protruding part on the linkage trigger 3. In order to make the plate-shaped structure abut against the protruding part on the linkage trigger 3, the inner side of the plate-shaped structure is bent towards the protruding part on the linkage trigger 3.

[0073] In the embodiment, as shown in Figures 1 to 9 , a third elastic member 7 is arranged between the linkage trigger 3 and the bolt fixing plate 2. Specifically, Figure 2 , the third elastic member 7 has an elastic force to pull the linkage trigger 3 to rotate counterclockwise relative to the linkage plate 6, so that the trigger part 31 can be at the plate structure on the large bolt trigger plate 43, and in order to avoid excessive rotation of the linkage trigger 3, a limiting part 61 is arranged on the linkage plate 6, which is a protrusion arranged on the surface of the linkage plate 6, and the limiting part 61 is used to abut against the lower end of the linkage trigger 3, so that the linkage trigger 3 can be flush with the linkage plate 6 under the elastic force of the third elastic member 7.

[0074] In the door leaf opening state, as shown in Figure 7 , since the door leaf is separated from the door frame, the small bolt 51 loses the abutment of the door frame and moves outward of the lock body shell 1 under the action of the second elastic member 52. In this process, the small bolt trigger plate 53 will abut against the linkage trigger 3, which will in turn drive the linkage trigger 3 to rotate clockwise relative to the linkage plate 6, so that the trigger part 31 on the linkage trigger 3 is separated from the large bolt trigger plate 43. Since the large bolt trigger plate 43 loses the restraint of the linkage trigger 3, as shown in Figures 7 to 8 , the large bolt 41 will extend out of the lock body shell 1 under the action of the first elastic member 42, and then the bolt fixing plate 2 can be extended out of the lock body shell 1 by the handle or key or motor (as shown in Figure 9 ), wherein when the linkage trigger 3 moves outward of the lock body shell 1, after the linkage trigger 3 is separated from the small bolt trigger plate 53, the linkage trigger 3 is reset under the action of the third elastic member 7. Therefore, during the movement of the linkage trigger 3 outward of the lock body shell 1, the trigger part 31 will slide against the large bolt trigger plate 43, and in turn the large bolt trigger plate 43 will push the linkage trigger 3 to rotate around the linkage plate 6 against the elastic force of the third elastic member 7, so that the trigger part 31 enters the outside of the large bolt trigger plate 43 from the inside thereof.

[0075] In order to facilitate the movement of the trigger part 31 to the outside of the large bolt trigger plate 43, the inside of the large bolt trigger plate 43 is ramp-shaped, and the trigger part 31 is a roller, preferably a bearing, which rolls over the side of the large bolt trigger plate 43 on the ramp-shaped inside thereof and enters the outside of the large bolt trigger plate 43.

[0076] In the embodiment, by setting the small lock tongue 51, when the door leaf is in the closed state, the small lock tongue 51 is pressed by the door frame and is in the lock body shell 1, and then the state of the small lock tongue 51 can be detected by the detection component inside the lock body shell 1 to determine that the door leaf has been closed. Since the second elastic member 52 is arranged between the small lock tongue 51 and the small lock tongue fixing plate 8, even in the case of a large door gap, when the door leaf is in the closed state, the small lock tongue 51 will still be pressed by the door frame and be in the lock body shell 1, and the state of the small lock tongue 51 can be accurately determined to determine the state of the door leaf. Further, in the open state of the door leaf, the unlocking of the large lock tongue 41 by the small lock tongue 51 enables the large lock tongue 41 to be released from the linkage trigger 3 and extend out of the lock body shell 1 under the action of the first elastic member 42, which can assist in determining the state of the door leaf.

[0077] The lock tongue structure provided in the embodiment has the following working process:

[0078] In the closing process of the door leaf, the lock tongue fixing plate 2 is driven by an external force such as a handle or a key or a motor to move into the lock body shell 1, the linkage plate 6 drives the linkage trigger 3 to move into the lock body shell 1, the trigger part 31 on the linkage trigger 3 abuts against the plate structure on the large lock tongue trigger plate 43, and then the large lock tongue 41 is driven to move into the lock body shell 1 against the elastic force of the first elastic member 42, and the lock tongue fixing plate 2 and the large lock tongue 41 are completely retracted into the lock body shell 1.

[0079] After the lock tongue fixing plate 2 and the large lock tongue 41 are completely retracted into the lock body shell 1, the door leaf is in the closed state, the small lock tongue 51 is pressed by the door frame and is in the lock body shell 1, and at this time, in order to lock the door leaf and the door frame, the lock tongue fixing plate 2 is driven by an external force such as a handle or a key or a motor to extend out of the lock body shell 1 and separate the linkage trigger 3 from the large lock tongue trigger plate 43, the large lock tongue 41 extends out of the lock body shell 1 under the action of the first elastic member 42, and then the door is locked.

[0080] In the closing process of the door leaf, the lock tongue fixing plate 2 is driven by an external force such as a handle or a key or a motor to move into the lock body shell 1, the linkage plate 6 drives the linkage trigger 3 to move into the lock body shell 1, the trigger part 31 on the linkage trigger 3 abuts against the plate structure on the large lock tongue trigger plate 43, and then the large lock tongue 41 is driven to move into the lock body shell 1 against the elastic force of the first elastic member 42, and the lock tongue fixing plate 2 and the large lock tongue 41 are completely retracted into the lock body shell 1.

[0081] In the door leaf open state, the small lock tongue 51 loses the abutment of the door frame and moves to the outside of the lock body shell 1 under the action of the second elastic member 52. In this process, the small lock tongue trigger plate 53 will abut against the linkage trigger member 3, thereby driving the linkage trigger member 3 to rotate clockwise relative to the linkage plate 6, so that the trigger part 31 on the linkage trigger member 3 is separated from the large lock tongue trigger plate 43. Since the large lock tongue trigger plate 43 loses the restraint of the linkage trigger member 3, the large lock tongue 41 will extend out of the lock body shell 1 under the action of the first elastic member 42, and then the handle or the key or the motor can drive the lock tongue fixing plate 2 to extend out of the lock body shell 1.

[0082] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those of ordinary skill in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A bolt structure provided in a lock body case (1) which is installed on a door leaf, characterized in that, The utility model relates to a lock latch fixed plate (2) is connected with the lock body shell (1) activity, and the linkage trigger piece (3) is connected with the lock latch fixed plate (2) activity, and the big lock tongue (41) is connected with the lock body shell (1), and the big lock tongue (41) is equipped with the first elastic element (42) between the lock body shell (1), and the small lock tongue (51) is connected with the lock body shell (1), and the small lock tongue (51) is equipped with the second elastic element (52) between the lock body shell (1), wherein, in the door leaf closing process, the linkage trigger piece (3) is connected with the big lock tongue (41), and the lock latch fixed plate (2) is configured to drive the big lock tongue (41) together into the lock body shell (1) under the action of external force through the linkage trigger piece (3), in the door leaf closing state, the lock latch fixed plate (2) is configured to drive the linkage trigger piece (3) and the big lock tongue (41) are separated under the action of external force and stretch out the lock body shell (1) from the first elastic element (42), and the small lock tongue (51) is pressed in the lock body shell (1) by door frame, in the door leaf opening process, the linkage trigger piece (3) is connected with the big lock tongue (41), and the lock latch fixed plate (2) is configured to drive the big lock tongue (41) together into the lock body shell (1) under the action of external force through the linkage trigger piece (3), in the door leaf opening state, the small lock tongue (51) is moved to the outside direction of the lock body shell (1) through the second elastic element (52) effect, make the small lock tongue (51) and the linkage trigger piece (3) abut, to drive the linkage trigger piece (3) and the big lock tongue (41) are separated, and the big lock tongue (41) is stretched out the lock body shell (1) under the action of the first elastic element (42), the linkage plate (6) one side is fixed with the lock latch fixed plate (2), and the linkage plate (6) other side is hinged with the linkage trigger piece (3), the third elastic element (7) is connected between the linkage plate (6) and the linkage trigger piece (3), and the third elastic element (7) has the elastic force of driving the linkage trigger piece (3) and the big lock tongue (41) are connected, the linkage plate (6) is equipped with the limiting portion (61), and the linkage trigger piece (3) is suitable for abutting with the limiting portion (61), to make the trigger portion (31) be at the big lock tongue trigger plate (43) of the big lock tongue (41), the small lock tongue (51) is equipped with the small lock tongue trigger plate (53) near the linkage trigger piece (3) side, and the small lock tongue trigger plate (53) is equipped with the abutting portion. ​ ​ ​ ​ ​ In the door leaf open state, the small lock tongue (51) moves to the outside of the lock body shell (1), the linkage trigger (3) is provided with a protruding abutting adapter on one side, and the abutting adapter is adapted to abut against the abutting adapter to push the linkage trigger (3) to rotate around the linkage plate (6) against the elastic force of the third elastic element (7), so that the linkage trigger (3) is separated from the large lock tongue (41). And in the door leaf open state, the unlocking of the small lock tongue to the large lock tongue makes the large lock tongue lose the restraint of the linkage trigger and extend out of the lock body shell under the action of the first elastic element, which can assist in judging the state of the door leaf.

2. A lock tongue according to claim 1, characterized in that The large lock tongue (41) is provided with a large lock tongue trigger plate (43), and the linkage trigger (3) is provided with a trigger part (31). In the door leaf closed state, the trigger part (31) abuts on the outside of the large lock tongue trigger plate (43) to drive the large lock tongue (41) to move into the lock body shell (1). In the door leaf open state, the trigger part (31) is separated from the large lock tongue trigger plate (43).

3. A lock tongue according to claim 2, wherein After the large lock tongue (41) extends out of the lock body shell (1) under the action of the first elastic element (42), the lock tongue fixing plate (2) drives the linkage trigger (3) to move to the outside of the lock body shell (1) under the action of external force, and the trigger part (31) enters the outside of the large lock tongue trigger plate (43) against the elastic force of the third elastic element (7).

4. A lock tongue according to claim 3, wherein When the trigger part (31) is configured to move to the outside of the lock body shell (1), the trigger part (31) slides against the large lock tongue trigger plate (43) to drive the linkage trigger (3) to rotate around the linkage plate (6) against the elastic force of the third elastic element (7), so that the trigger part (31) enters the outside of the large lock tongue trigger plate (43) from the inside.

5. A lock tongue according to claim 4, wherein The inside of the large lock tongue trigger plate (43) is inclined, the trigger part (31) is a roller, and the trigger part (31) enters the outside of the large lock tongue trigger plate (43) through the inclined inside of the large lock tongue trigger plate (43).

6. A lock tongue structure according to any one of claims 1-5, characterized in that Further comprising a small lock tongue fixing plate (8) fixedly connected with the lock body shell (1), which is provided with a through hole suitable for the small lock tongue (51) to pass through, and the second elastic element (52) is arranged between the small lock tongue fixing plate (8) and the end of the small lock tongue (51).

7. A lock tongue structure according to any one of claims 1-5, characterized in that Further comprising a large lock tongue fixing plate (9) fixedly connected with the lock body shell (1), which is provided with a through hole suitable for the large lock tongue (41) to pass through, and the first elastic element (42) is arranged between the large lock tongue fixing plate (9) and the end of the large lock tongue (41).

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