Lock tongue retaining mechanism of lock body and lock body
By designing the lock tongue stop mechanism of the lock body, the combination of the lock tongue assembly, the lock stop plate, the lock unlocking member and the trigger tongue assembly is solved, and the lock tongue is easily opened, achieving higher safety.
Patent Information
- Application Number
- CN202420892671.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The lock tongue of existing locks lacks anti-insert and anti-retardant function, and is easily opened by tools such as cards, resulting in poor safety.
A locking tongue stop-retard mechanism of the lock body is designed, including a locking tongue assembly, a locking plate, a locking unlocking member and a triggering tongue assembly. The locking tongue assembly has a locking tongue plate and a locking tongue. The stop-retard plate has a locking and unlocking working position. The locking unlocking member is used to switch the working position of the stop-retarding plate, and the triggering tongue assembly is used to control the status of the locking unlocking member.
After closing the door, the stop-ret board locks the lock tongue to prevent the lock tongue from being opened by tools such as cards, which significantly improves the safety of the lock.
Smart Images
Figure CN222615018U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of locks, in particular to a lock tongue anti-retraction mechanism of a lock body and a lock body. Background Art
[0002] The lock tongue on the market currently does not have the function of preventing insertion and withdrawal, and the lock tongue is easily opened by tools such as cards. In order to solve the above problem, the lock body is usually provided with an anti-locking mechanism. When the lock body is not provided with an anti-locking mechanism or the anti-locking mechanism of the lock body is not anti-locked, the lock body can still be opened by tools such as cards, and the safety of the lock is poor. Utility Model Content
[0003] In view of the above problems, the utility model provides a lock tongue anti-retraction mechanism of a lock body and a lock body.
[0004] The technical solution adopted by the utility model is as follows:
[0005] A lock tongue stop mechanism of a lock body, the lock body comprising a lock shell, the lock tongue stop mechanism being arranged on the lock shell, the lock tongue stop mechanism comprising:
[0006] The bolt assembly comprises a bolt plate and a bolt matched with the bolt plate, wherein the bolt plate is movably arranged in the lock housing, and when the bolt moves toward the inner side of the lock body, the bolt plate is driven to move;
[0007] The elastic reset member of the lock tongue assembly cooperates with the lock tongue assembly to make the lock tongue assembly have a movement tendency to move toward the outside of the lock housing;
[0008] A backstop plate is movably arranged on the lock housing, and the backstop plate has a first locking working position and a first unlocking working position. When the lock tongue extends out of the lock housing and the backstop plate is in the first locking working position, the backstop plate cooperates with the lock tongue plate to prevent the lock tongue plate from moving toward the inside of the lock housing. When the backstop plate is in the first unlocking working position, the backstop plate no longer prevents the lock tongue plate from moving toward the inside of the lock housing.
[0009] The elastic reset member of the backstop plate is used to make the backstop plate have a movement tendency to switch to the first locking working position;
[0010] The locking and unlocking member is movably arranged on the lock shell, and has a second unlocking working position. The locking and unlocking member is used to cooperate with the backstop plate. When the locking and unlocking member is in the second unlocking working position, the locking and unlocking member drives the backstop plate to switch to the first unlocking working position.
[0011] The application can make the anti-retraction plate lock the deadbolt plate after the door is closed, and the deadbolt cannot be opened by tools such as cards, thereby improving safety.
[0012] The bolt assembly of the present application can be in various forms, such as a flip-up latch bolt assembly. In actual use, the locking and unlocking member can cooperate with the unlocking mechanism of the lock body and switch to the second unlocking working position through the unlocking mechanism.
[0013] In actual use, the locking and unlocking member can be an integral part or formed by multiple parts.
[0014] In actual use, a pressure-bearing piece can be fixed or inserted on the backstop plate, and one end of the elastic reset piece of the backstop plate contacts and cooperates with the pressure-bearing piece.
[0015] In one embodiment of the present invention, the locking and unlocking member has a second locking working position. When the retaining plate is switched to the first locking working position, the retaining plate is used to drive the locking and unlocking member to switch to the second locking working position.
[0016] In one embodiment of the present invention, it further includes:
[0017] A trigger tongue assembly comprises a trigger tongue plate movably arranged on the lock housing and a trigger tongue rotatably mounted on the trigger tongue plate, wherein the trigger tongue plate has a first working position and a second working position, wherein when the trigger tongue plate is in the first working position, the trigger tongue extends out of the lock housing, and when the trigger tongue plate is in the second working position, the trigger tongue retracts into the lock housing;
[0018] The elastic reset member of the trigger tongue assembly cooperates with the trigger tongue plate or the trigger tongue to make the trigger tongue plate have a movement tendency to move toward the first working position. When the trigger tongue is subjected to external pressure, it can move into the lock housing to switch the trigger tongue plate to the second working position;
[0019] An adapter plate is movably arranged on the lock housing, the adapter plate cooperates with the trigger tongue plate and is driven to move by the trigger tongue plate, and the adapter plate cooperates with the locking and unlocking member to switch the state of the locking and unlocking member; when the trigger tongue plate is in the first working position, the adapter plate drives the locking and unlocking member to switch to the second unlocking working position; when the trigger tongue plate is in the second working position, the adapter plate is no longer used to keep the locking and unlocking member in the second unlocking working position, and the locking and unlocking member can switch to the second locking working position.
[0020] Such an arrangement can achieve the following: when the trigger tongue extends out of the lock housing (the trigger tongue plate is in the first working position), the adapter plate drives the locking and unlocking member to switch to the second unlocking working position, that is, the lock tongue plate is not locked by the backstop plate, and the lock tongue plate can move normally in the lock housing after being compressed; when the trigger tongue retracts into the lock housing (that is, after closing the door), the trigger tongue plate is in the second working position, the adapter plate no longer keeps the locking and unlocking member in the second unlocking working position, and the locking and unlocking member can switch to the second locking working position driven by the backstop plate, and the backstop plate is in the first locking working position to lock the lock tongue plate.
[0021] It should be noted that the retraction of the trigger tongue into the lock housing mentioned in the present application is not limited to being completely retracted into the lock housing, but may be partially retracted.
[0022] In one embodiment of the present invention, the trigger tongue plate has a first driving part and a second driving part, and the first driving part is closer to the trigger tongue, and the adapter plate has a driven part, and the driven part is between the first driving part and the second driving part. When the trigger tongue assembly is in the first working position, the second driving part contacts and cooperates with the driven part, and when the trigger tongue assembly is in the second working position, the first driving part contacts and cooperates with the driven part.
[0023] This arrangement facilitates the triggering of the tongue plate to reliably drive the adapter plate to move.
[0024] In one embodiment of the present invention, the locking and unlocking member has a first matching portion for matching with the adapter plate.
[0025] In one embodiment of the utility model, the locking and unlocking member has a second matching portion, and the lock tongue stop mechanism also includes an electric unlocking element, and the electric unlocking element has a movable first unlocking portion, and the first unlocking portion is used to cooperate with the second matching portion to switch the locking and unlocking member to the second unlocking working position.
[0026] In actual use, the electric unlocking element can be a variety of structural forms such as an electric push rod, an electromagnet or a motor with a cam. When it is an electric push rod or an electromagnet, the unlocking part is the movable rod of the electric push rod, or the unlocking part is a part connected / linked to the movable rod of the electric push rod.
[0027] In one embodiment of the present invention, the locking and unlocking member has a third matching portion, and the lock tongue stop mechanism also includes a mechanical unlocking member rotatably arranged on the lock shell, and the mechanical unlocking member has a second unlocking portion, and the second unlocking portion is used to cooperate with the third matching portion to switch the locking and unlocking member to the second unlocking working position.
[0028] In one embodiment of the present invention, the locking and unlocking member has a fourth matching portion, and the fourth matching portion is used to match with the backstop plate;
[0029] The lock tongue can adjust its angle relative to the lock tongue plate, and the lock tongue has a first position and a second position, and the lock tongue also has a first limiting structure and a second limiting structure; the lock and unlocking member also has a locking block, and the locking block is used to cooperate with the first limiting structure or the second limiting structure. When the lock and unlocking member is in the second locking working position and the locking block cooperates with the first limiting structure, the lock tongue is in the first position and cannot rotate, and the lock tongue can slide into the lock shell along the direction of the locking block after being pressed; when the lock and unlocking member is in the second locking working position and the locking block cooperates with the second limiting structure, the lock tongue is in the second position and cannot rotate, and the lock tongue can slide into the lock shell along the direction of the locking block after being pressed.
[0030] In one embodiment of the present invention, the locking tongue is rotatably mounted on the locking tongue plate, and the first limiting structure and the second limiting structure are sliding grooves arranged on the side of the locking tongue.
[0031] The lock tongue of the present application can automatically switch between two installation directions, that is, when the locking and unlocking member is in the second unlocking working position, the inclined tongue can rotate after being pressed to switch between the first position and the second position. When the inclined tongue is used as the first installation direction, the inclined tongue is in the first position, and when the locking and unlocking member is in the second locking working position, the locking and unlocking member contacts the first limiting structure, limiting the inclined tongue to remain in the first position when it is active; when the inclined tongue is used as the second installation direction, the inclined tongue is in the second position, and when the locking and unlocking member is in the second locking working position, the locking and unlocking member contacts the second limiting structure, limiting the inclined tongue to remain in the second position when it is active. The present application can realize the switching between two installation directions more conveniently without removing or replacing the inclined tongue.
[0032] The present application also discloses a lock body, comprising a lock shell and the lock tongue anti-retraction mechanism of the lock body described above.
[0033] The beneficial effect of the utility model is that the anti-retraction plate can lock the lock tongue plate after the door is closed, and the lock tongue cannot be opened by tools such as cards, thereby having good safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a schematic diagram of the locking tongue locking mechanism when the locking plate is in the first unlocking working position;
[0035] Figure 2 yes Figure 1 The schematic diagram after the stop plate is removed;
[0036] Figure 3 It is a schematic diagram of the locking tongue locking mechanism when the locking plate is in the first locking working position;
[0037] Figure 4 yes Figure 3 The schematic diagram after the stop plate is removed;
[0038] Figure 5 is a schematic diagram of the cooperation between the locking block and the first limiting structure;
[0039] Figure 6 It is a schematic diagram showing that the lock tongue can switch between the first position and the second position when the lock-unlocking member is in the second unlocking working position.
[0040] The reference numerals in the figures are:
[0041] 100. Lock housing; 1. Lock tongue assembly; 11. Lock tongue plate; 12. Lock tongue; 121. First limiting structure; 122. Second limiting structure; 2. Elastic reset member of lock tongue assembly; 3. Retraction plate; 31. Pressure member; 4. Elastic reset member of retraction plate; 5. Locking and unlocking member; 51. First matching part; 52. Second matching part; 53. Third matching part; 54. Fourth matching part; 55. Locking block; 6. Trigger tongue assembly; 61. Trigger tongue plate; 611. First driving part; 612. Second driving part; 62. Trigger tongue; 7. Elastic reset member of trigger tongue assembly; 8. Adapter plate; 81. Driven part; 9. Electric unlocking element; 91. First unlocking part; 10. Mechanical unlocking member; 101. Second unlocking part. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0043] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0045] The utility model is described in detail below in conjunction with the accompanying drawings.
[0046] like Figure 1 , 2 , 3 and 4, a lock tongue stop mechanism of a lock body, the lock body includes a lock shell 100, the lock tongue stop mechanism is arranged on the lock shell 100, and the lock tongue stop mechanism includes:
[0047] The bolt assembly 1 comprises a bolt plate 11 and a bolt 12 matched with the bolt plate 11. The bolt plate 11 is movably arranged in the lock housing 100. When the bolt 12 moves toward the inner side of the lock body, it drives the bolt plate 11 to move.
[0048] The elastic reset member 2 of the lock tongue assembly cooperates with the lock tongue assembly 1 to make the lock tongue assembly 1 have a movement tendency to move toward the outside of the lock housing 100;
[0049] The backstop plate 3 is movably arranged on the lock housing 100, and the backstop plate 3 has a first locking working position and a first unlocking working position. When the lock tongue 12 extends out of the lock housing 100 and the backstop plate 3 is in the first locking working position, the backstop plate 3 cooperates with the lock tongue plate 11 to prevent the lock tongue plate 11 from moving inwardly of the lock housing 100. When the backstop plate 3 is in the first unlocking working position, the backstop plate 3 no longer prevents the lock tongue plate 11 from moving inwardly of the lock housing 100.
[0050] The elastic reset member 4 of the backstop plate is used to make the backstop plate 3 have a movement tendency to switch to the first locking working position;
[0051] The locking and unlocking member 5 is movably arranged on the lock housing 100. The locking and unlocking member 5 has a second unlocking working position. The locking and unlocking member 5 is used to cooperate with the backstop plate 3. When the locking and unlocking member 5 is in the second unlocking working position, the locking and unlocking member 5 drives the backstop plate 3 to switch to the first unlocking working position.
[0052] The present application can make the anti-retraction plate 3 lock the bolt plate 11 after the door is closed, and the bolt 12 cannot be opened by tools such as cards, thereby achieving good safety.
[0053] The bolt assembly 1 of the present application can be in various forms, such as a flip latch bolt assembly. In actual use, the locking and unlocking member 5 can cooperate with the unlocking mechanism of the lock body and switch to the second unlocking working position through the unlocking mechanism.
[0054] In actual use, the locking and unlocking member 5 can be an integral part or formed by multiple parts.
[0055] like Figure 2 As shown, in actual use, a pressure piece 31 can be fixed or inserted on the backstop plate 3, and one end of the backstop plate elastic reset piece 4 contacts and cooperates with the pressure piece 31.
[0056] In this embodiment, the locking and unlocking member 5 has a second locking working position. When the backstop plate 3 is switched to the first locking working position, the backstop plate 3 is used to drive the locking and unlocking member 5 to switch to the second locking working position.
[0057] like Figure 1 , 2 As shown in , 3 and 4, in this embodiment, the locking tongue anti-retraction mechanism also includes:
[0058] The trigger tongue assembly 6 comprises a trigger tongue plate 61 movably arranged on the lock housing 100 and a trigger tongue 62 rotatably mounted on the trigger tongue plate 61. The trigger tongue plate 61 has a first working position and a second working position. When the trigger tongue plate 61 is in the first working position, the trigger tongue 62 extends out of the lock housing 100. When the trigger tongue plate 61 is in the second working position, the trigger tongue 62 retracts into the lock housing 100.
[0059] The trigger tongue assembly elastic reset member 7 cooperates with the trigger tongue plate 61 or the trigger tongue 62 to make the trigger tongue plate 61 have a movement tendency to move toward the first working position. When the trigger tongue 62 is subjected to external pressure, it can move into the lock housing 100 to switch the trigger tongue plate 61 to the second working position;
[0060] The adapter plate 8 is movably arranged on the lock housing 100, and the adapter plate 8 cooperates with the trigger tongue plate 61 and is driven to move by the trigger tongue plate 61. The adapter plate 8 cooperates with the locking and unlocking member 5 and is used to switch the state of the locking and unlocking member 5; when the trigger tongue plate 61 is in the first working position, the adapter plate 8 drives the locking and unlocking member 5 to switch to the second unlocking working position. When the trigger tongue plate 61 is in the second working position, the adapter plate 8 is no longer used to keep the locking and unlocking member 5 in the second unlocking working position, and the locking and unlocking member 5 can switch to the second locking working position.
[0061] Such an arrangement can achieve the following: when the trigger tongue 62 extends out of the lock housing 100 (the trigger tongue plate 61 is in the first working position), the adapter plate 8 drives the locking and unlocking member 5 to switch to the second unlocking working position, that is, the lock tongue plate 11 is not locked by the backstop plate 3, and the lock tongue plate 11 can move normally in the lock housing 100 after being pressed; when the trigger tongue 62 retracts into the lock housing 100 (that is, after closing the door), the trigger tongue plate 61 is in the second working position, and the adapter plate 8 no longer keeps the locking and unlocking member 5 in the second unlocking working position. The locking and unlocking member 5 can be switched to the second locking working position driven by the backstop plate 3, and the backstop plate 3 is in the first locking working position to lock the lock tongue plate 11.
[0062] It should be noted that the retraction of the trigger tongue 62 into the lock housing 100 mentioned in the present application is not limited to being completely retracted into the lock housing 100, and may be partially retracted.
[0063] like Figure 1 , 2As shown in , 3 and 4, in this embodiment, the trigger tongue plate 61 has a first driving portion 611 and a second driving portion 612, and the first driving portion 611 is closer to the trigger tongue 62, and the adapter plate 8 has a driven portion 81, and the driven portion 81 is between the first driving portion 611 and the second driving portion 612. When the trigger tongue assembly 6 is in the first working position, the second driving portion 612 contacts and cooperates with the driven portion 81, and when the trigger tongue assembly 6 is in the second working position, the first driving portion 611 contacts and cooperates with the driven portion 81.
[0064] This arrangement facilitates the triggering tongue plate 61 to reliably drive the adapter plate 8 to move.
[0065] like Figure 1 , 2 As shown in FIGS. 4 and 5 , in this embodiment, the locking and unlocking member 5 has a first matching portion 51 for matching with the adapter plate 8 .
[0066] like Figure 1 and 2 As shown, in this embodiment, the locking and unlocking member 5 has a second matching portion 52, and the lock tongue stop mechanism also includes an electric unlocking element 9, which has a movable first unlocking portion 91, and the first unlocking portion 91 is used to cooperate with the second matching portion 52 to switch the locking and unlocking member 5 to the second unlocking working position.
[0067] In actual use, the electric unlocking element 9 can be a variety of structural forms such as an electric push rod, an electromagnet or a motor with a cam. When it is an electric push rod or an electromagnet, the unlocking part is the movable rod of the electric push rod, or the unlocking part is a part connected / linked to the movable rod of the electric push rod.
[0068] like Figure 1 and 2 As shown, in this embodiment, the locking and unlocking member 5 has a third matching portion 53, and the lock tongue stop mechanism also includes a mechanical unlocking member 10 rotatably arranged on the lock housing 100, and the mechanical unlocking member 10 has a second unlocking portion 101, and the second unlocking portion 101 is used to cooperate with the third matching portion 53 to switch the locking and unlocking member 5 to the second unlocking working position.
[0069] like Figure 1 , 2 As shown in FIGS. 3 and 4 , in this embodiment, the locking and unlocking member 5 has a fourth matching portion 54 , and the fourth matching portion 54 is used to match with the retaining plate 3 .
[0070] like Figure 1 , 3As shown in , 5 and 6, the lock tongue 12 can adjust the angle relative to the lock tongue plate 11, the lock tongue 12 has a first position and a second position, and the lock tongue 12 also has a first limiting structure 121 and a second limiting structure 122; the locking and unlocking member 5 also has a locking block 55, and the locking block 55 is used to cooperate with the first limiting structure 121 or the second limiting structure 122. When the locking and unlocking member 5 is in the second locking working position and the locking block 55 cooperates with the first limiting structure 121, the lock tongue 12 is in the first position and cannot rotate. After being pressed, the lock tongue 12 can slide into the lock shell 100 along the direction of the locking block 55; when the locking and unlocking member 5 is in the second locking working position and the locking block 55 cooperates with the second limiting structure 122, the lock tongue 12 is in the second position and cannot rotate. After being pressed, the lock tongue 12 can slide into the lock shell 100 along the direction of the locking block 55.
[0071] like Figure 5 and 6 As shown, in this embodiment, the lock tongue 12 is rotatably mounted on the lock tongue plate 11 , and the first limiting structure 121 and the second limiting structure 122 are sliding grooves arranged on the side of the lock tongue 12 .
[0072] The lock tongue 12 of the present application can automatically switch between two installation directions, that is, when the locking and unlocking member 5 is in the second unlocking working position, the inclined tongue can rotate after being pressed to switch between the first position and the second position. When the inclined tongue is used as the first installation direction, the inclined tongue is in the first position, and when the locking and unlocking member 5 is in the second locking working position, the locking and unlocking member 5 contacts the first limiting structure 121, limiting the inclined tongue to remain in the first position when it is active; when the inclined tongue is used as the second installation direction, the inclined tongue is in the second position, and when the locking and unlocking member 5 is in the second locking working position, the locking and unlocking member 5 contacts the second limiting structure 122, limiting the inclined tongue to remain in the second position when it is active. The present application can realize the switching between two installation directions more conveniently without removing or replacing the inclined tongue.
[0073] This embodiment further discloses a lock body, including a lock shell 100 and the lock tongue anti-retraction mechanism mentioned in this embodiment.
[0074] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.
Claims
1. A lock tongue stop mechanism of a lock body, the lock body comprising a lock shell, characterized in that: The lock tongue anti-retraction mechanism is arranged on the lock housing, and the lock tongue anti-retraction mechanism comprises: The bolt assembly comprises a bolt plate and a bolt matched with the bolt plate, wherein the bolt plate is movably arranged in the lock housing, and when the bolt moves toward the inner side of the lock body, the bolt plate is driven to move; The elastic reset member of the lock tongue assembly cooperates with the lock tongue assembly to make the lock tongue assembly have a movement tendency to move toward the outside of the lock housing; A backstop plate is movably arranged on the lock housing, and the backstop plate has a first locking working position and a first unlocking working position. When the lock tongue extends out of the lock housing and the backstop plate is in the first locking working position, the backstop plate cooperates with the lock tongue plate to prevent the lock tongue plate from moving toward the inside of the lock housing. When the backstop plate is in the first unlocking working position, the backstop plate no longer prevents the lock tongue plate from moving toward the inside of the lock housing. The elastic reset member of the backstop plate is used to make the backstop plate have a movement tendency to switch to the first locking working position; The locking and unlocking member is movably arranged on the lock shell, and has a second unlocking working position. The locking and unlocking member is used to cooperate with the backstop plate. When the locking and unlocking member is in the second unlocking working position, the locking and unlocking member drives the backstop plate to switch to the first unlocking working position.
2. The lock tongue anti-retraction mechanism of the lock body according to claim 1, characterized in that: The locking and unlocking member has a second locking working position. When the backstop plate is switched to the first locking working position, the backstop plate is used to drive the locking and unlocking member to switch to the second locking working position.
3. The lock tongue anti-retraction mechanism of the lock body according to claim 2, characterized in that: Also includes: A trigger tongue assembly comprises a trigger tongue plate movably arranged on the lock housing and a trigger tongue rotatably mounted on the trigger tongue plate, wherein the trigger tongue plate has a first working position and a second working position, wherein when the trigger tongue plate is in the first working position, the trigger tongue extends out of the lock housing, and when the trigger tongue plate is in the second working position, the trigger tongue retracts into the lock housing; The elastic reset member of the trigger tongue assembly cooperates with the trigger tongue plate or the trigger tongue to make the trigger tongue plate have a movement tendency to move toward the first working position. When the trigger tongue is subjected to external pressure, it can move into the lock housing to switch the trigger tongue plate to the second working position; An adapter plate, movably arranged on the lock housing, the adapter plate cooperates with the trigger tongue plate, is driven to move by the trigger tongue plate, and cooperates with the locking and unlocking member to switch the state of the locking and unlocking member; When the trigger tongue plate is in the first working position, the adapter plate drives the locking and unlocking member to switch to the second unlocking working position. When the trigger tongue plate is in the second working position, the adapter plate is no longer used to keep the locking and unlocking member in the second unlocking working position, and the locking and unlocking member can switch to the second locking working position.
4. The lock tongue anti-retraction mechanism of the lock body according to claim 3, characterized in that: The trigger tongue plate has a first driving part and a second driving part, and the first driving part is closer to the trigger tongue. The adapter plate has a driven part, and the driven part is between the first driving part and the second driving part. When the trigger tongue assembly is in the first working position, the second driving part contacts and cooperates with the driven part. When the trigger tongue assembly is in the second working position, the first driving part contacts and cooperates with the driven part.
5. The lock tongue anti-retraction mechanism of the lock body according to claim 3, characterized in that: The locking and unlocking member has a first matching portion for matching with the adapter plate.
6. The lock tongue anti-retraction mechanism of the lock body according to claim 1, characterized in that: The locking and unlocking member has a second matching portion, and the lock tongue anti-retraction mechanism also includes an electric unlocking element, which has a movable first unlocking portion, and the first unlocking portion is used to cooperate with the second matching portion to switch the locking and unlocking member to the second unlocking working position.
7. The lock tongue anti-retraction mechanism of the lock body according to claim 1, characterized in that: The locking and unlocking member has a third matching portion, and the lock tongue stop mechanism also includes a mechanical unlocking member rotatably arranged on the lock shell, and the mechanical unlocking member has a second unlocking portion, which is used to cooperate with the third matching portion to switch the locking and unlocking member to the second unlocking working position.
8. The lock tongue anti-retraction mechanism of the lock body according to claim 1, characterized in that: The locking and unlocking member has a fourth matching portion, and the fourth matching portion is used to match with the backstop plate; The lock tongue can adjust its angle relative to the lock tongue plate, and the lock tongue has a first position and a second position, and the lock tongue also has a first limiting structure and a second limiting structure; the lock and unlocking member also has a locking block, and the locking block is used to cooperate with the first limiting structure or the second limiting structure. When the lock and unlocking member is in the second locking working position and the locking block cooperates with the first limiting structure, the lock tongue is in the first position and cannot rotate, and the lock tongue can slide into the lock shell along the direction of the locking block after being pressed; when the lock and unlocking member is in the second locking working position and the locking block cooperates with the second limiting structure, the lock tongue is in the second position and cannot rotate, and the lock tongue can slide into the lock shell along the direction of the locking block after being pressed.
9. The lock tongue anti-retraction mechanism of the lock body according to claim 8, characterized in that: The locking tongue is rotatably mounted on the locking tongue plate, and the first limiting structure and the second limiting structure are sliding grooves arranged on the side of the locking tongue.
10. A lock body, characterized in that: The invention comprises a lock housing and a lock tongue anti-retraction mechanism of the lock body according to any one of claims 1 to 9.