Pressure-resistant lock body
By setting up a linkage structure and a compressive structure in the lock body, the problem of deformation or damage of the lock tongue under axial pressure is solved, the normal opening of the lock body and the service life are extended, and the maintenance cost is reduced.
Patent Information
- Application Number
- CN202421678758.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The existing mechanical lock body is prone to deform or damage when the main lock tongue is subjected to axial pressure, resulting in the inability to open normally. Especially when the installation is incomplete or forced operation, the door lock is stuck, which increases time and cost.
A pressure-resistant lock body is designed. By setting the linkage structure of the main lock tongue assembly, the oblique tongue assembly, the hand-moving peach assembly and the lock core assembly in the lock shell, and adding a compressive structure to the lock shell, including an elastic reset device and the compressive structure, the axial pressure of the main lock tongue assembly is evenly dispersed to prevent deformation and damage.
It effectively avoids deformation or damage of the lock body under axial pressure, ensures that the lock body is opened normally, avoids the lock body being stuck, and saves time and cost of replacing the lock body.
Smart Images
Figure CN223177309U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of locks, in particular to a lock body with pressure resistance. Background Art
[0002] At present, the existing mechanical lock bodies generally include a main lock tongue and an oblique tongue, and are locked and unlocked through the cooperation of a handle (lever dial cam) and a lock core (lock core dial cam). Among them, the user can lock / unlock by using a key to rotate the lock core. The lock core can extend the main lock tongue to lock, and at the same time retract the main lock tongue and the oblique tongue to unlock. The handle can only control the retraction of the lock tongue alone to open the door.
[0003] For the existing mechanical lock bodies, when the main lock tongue extends out under uncertain or special environmental conditions and is under external axial pressure, the internal accessories of the lock body are prone to deformation, resulting in abnormal opening. There are special situations, for example, when installing the mechanical lock body on the door, the installer may have a certain error in the installation, resulting in the lock body not being installed correctly. That is to say, the main lock tongue and the corresponding buckle plate may be misaligned, and when the main lock tongue cannot be aligned with the buckle plate and fully extends, if the installer is not careful and continues to test the lock body, a strong axial pressure may be applied to forcefully close the lock body. The main lock tongue is easily pressed by the strong axial pressure, which may cause deformation and damage to the internal accessories of the lock body, resulting in the door lock being stuck, and the user cannot open the door normally, which is extremely troublesome and requires replacing the door lock again, resulting in unnecessary time and cost.
[0004] Therefore, how to overcome the above-mentioned defects has become an important issue that needs to be solved urgently by those skilled in the art. Summary of the Utility Model
[0005] The utility model overcomes the above-mentioned technical deficiencies and provides a lock body with pressure resistance.
[0006] To achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A lock body with pressure resistance includes a lock shell, in which a main lock tongue assembly is movably connected, and a reversible oblique tongue assembly is arranged above the main lock tongue assembly. A lever dial cam assembly and a lock core dial cam assembly are also arranged in the lock shell. The main lock tongue assembly is linked with the lever dial cam assembly through a linkage rod, and the oblique tongue assembly is linked with the lever dial cam assembly. When the lock core dial cam assembly rotates, it can drive the main lock tongue assembly to extend / retract relative to the lock shell. A pressure-resistant structure is also arranged in the lock shell for reducing the axial pressure of the main lock tongue assembly when the main lock tongue assembly retracts relative to the lock shell.
[0008] Furthermore, the main lock tongue assembly includes a main lock tongue that can be extended / retracted relative to the lock shell, a lock tongue connecting plate with one end fixedly connected to the main lock tongue and installed in the lock shell to drive the main lock tongue to move, and the lock core nut assembly is arranged below the lock tongue connecting plate.
[0009] Furthermore, an elastic reset device is installed between the lock tongue connecting plate and the lock housing, and the elastic reset device is limitedly matched with the lock tongue connecting plate. When the lock core peach assembly rotates, the elastic reset device is driven to operate, thereby releasing the limit fit between the elastic reset device and the lock tongue connecting plate.
[0010] Furthermore, the elastic reset device includes a travel plate movably mounted on the lock housing, the lock housing is provided with a fixed plate located above the travel plate, the travel plate is elastically connected to the fixed plate through a first spring, the travel plate is provided with a first waist-shaped hole and a second waist-shaped hole, the first waist-shaped hole is provided with a first pin, and the second waist-shaped hole is provided with a second pin, when the lock core and peach assembly rotates, it presses against the travel plate to drive the travel plate to move upward.
[0011] Furthermore, the pressure-resistant structure includes a fixing seat fixed on the lock shell by a first pin, the fixing seat is provided with a connecting hole, the fixing seat is provided with a card block, and the upper end of the lock shell is also provided with a card slot for the card block to be inserted, the fixing seat covers the top of the stroke plate, the right side of the fixing seat abuts against the inner wall of the lock shell, and the left side of the fixing seat is provided with an abutment portion for the stroke plate to abut.
[0012] Furthermore, the travel plate is provided with a first connecting plate vertically upward, and a first through hole is provided on the first connecting plate. The upper end of the lock tongue connecting plate is provided with a plurality of protruding teeth for easy insertion into the first through hole, and the lower end is provided with a plurality of grooves for easy entry when the lock core and peach assembly rotates. A third waist-shaped hole is also provided on the lock tongue connecting plate, and the lock tongue connecting plate is movably connected to the first pin through the third waist-shaped hole. The lower end of the travel plate is provided with an arc-shaped portion extending downward, and when the lock core and peach assembly rotates, it presses against the arc-shaped portion to drive the travel plate to move upward.
[0013] Furthermore, the inclined tongue assembly includes a flippable inclined tongue, a connecting rod connected to the inclined tongue at one end, the other end of the connecting rod is connected to the handle peach assembly, a second spring is sleeved on the connecting rod, a third pin is installed on the lock shell, the lower end of the third pin is elastically connected to the movable plate through the third spring, and when the inclined tongue assembly is retracted into the lock body, the end of the connecting rod abuts against the movable plate, and the lower end of the movable plate is slidably connected to the lock shell.
[0014] Further, the handle dial cam component includes an upper dial plate connected to the first linkage rod, a lower dial plate disposed between the upper dial plate and the lock housing, and a torsion spring embedded between the upper dial plate and the lower dial plate. The lock housing is further provided with a fourth pin and a hook portion located on the outer periphery of the upper dial plate and the lower dial plate. One end of the torsion spring abuts against the fourth pin, and the other end is hooked to the hook portion. One end of the upper dial plate and the lower dial plate is connected to the connecting rod through a connecting seat.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] In this case, the main lock tongue component of the case is linked and connected to the handle dial cam component through a linkage rod, and the oblique tongue component is linked and connected to the handle dial cam component. When the lock core dial cam component rotates, it can drive the main lock tongue component to extend / retract relative to the lock housing. A compressive structure is further provided in the lock housing for increasing the axial pressure of the main lock tongue component when the main lock tongue component retracts relative to the lock housing. By providing a compressive structure in the lock housing in this case, the axial pressure when the main lock tongue component retracts relative to the lock housing is increased, so that the overall force on the main lock tongue component is uniform when it retracts relative to the lock housing. By adding a compressive structure, it effectively avoids the direct damage and deformation of the main lock tongue component and the internal fittings of the lock housing when the main lock tongue component is pushed and retracted into the lock housing under the axial pressure, effectively protecting the structure of the part of the main lock tongue component extending into the lock housing and the internal fittings of the lock housing. Even when the installer forcibly operates under the condition that the lock body is not completely installed correctly, the lock body will not be stuck, which is convenient to use and saves unnecessary time and cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall internal structure of the lock body of this case after hiding the front cover of the lock housing.
[0018] [[ID=,15]] Figure 2 It is this case Figure 1 One of the schematic diagrams after hiding part of the structure.
[0019] Figure 3 It is a schematic diagram of the lock tongue connecting plate structure of this case.
[0020] Figure 4 It is a schematic diagram of the stroke plate structure of this case.
[0021] Figure 5 It is a schematic diagram of the fixed seat structure of this case.
[0022] Figure 6 It is this case Figure 1 One of the schematic diagrams after hiding part of the structure. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following further details the features of the present utility model and other related features through embodiments for the understanding of those skilled in the same industry:
[0024] Regarding the descriptions of the positional relationships of components such as front, back, top, and bottom in this case, please refer to Figure 1 the directions shown in
[0025] As Figures 1 to 6 shown, this case discloses a pressure-resistant lock body, including a lock shell 100. A main lock tongue assembly 1 is movably connected inside the lock shell 100, and a reversible oblique tongue assembly 2 is arranged above the main lock tongue assembly 1. A handle dial cam assembly 3 and a lock core dial cam assembly 4 are also provided inside the lock shell 100. The main lock tongue assembly 1 is linked and connected to the handle dial cam assembly 3 through a linkage rod 5, the oblique tongue assembly 2 is linked and connected to the handle dial cam assembly 3, and when the lock core dial cam assembly 4 rotates, it can drive the main lock tongue assembly 1 to extend / retract relative to the lock shell 100. Through the linkage cooperation among the oblique tongue assembly 2, the handle dial cam assembly 3, the lock core dial cam assembly 4, and the linkage rod 5, the user can lock and unlock the lock body of this case, and its linkage performance is good and the implementation is convenient. A pressure-resistant structure is also provided inside the lock shell 100 for reducing the axial pressure of the main lock tongue assembly 1 when the main lock tongue assembly 1 retracts relative to the lock shell 100. By providing a pressure-resistant structure inside the lock shell 100 in this case, the axial pressure of the main lock tongue assembly 1 when it retracts relative to the lock shell 100 is increased, so that the overall force on the main lock tongue assembly 1 is uniform when it retracts relative to the lock shell 100. By adding a pressure-resistant structure, it effectively avoids directly damaging and deforming the main lock tongue assembly 1 and the internal fittings of the lock shell 100 when the main lock tongue assembly 1 is pushed and retracted into the lock shell 100 under the axial pressure, and effectively protects the structure of the part where the main lock tongue assembly 1 extends into the lock shell 100 and the internal fittings of the lock shell 100. Even when the installer forcibly operates under the condition that the lock body is not completely installed correctly, the lock body will not get stuck. Specifically, during implementation, both the main lock tongue assembly 1 and the oblique tongue assembly 2 are movably connected to the lock shell 100, that is to say, both the main lock tongue assembly 1 and the oblique tongue assembly 2 can extend and retract relative to the lock shell to achieve locking and unlocking of the lock body of this case.
[0026] Referring to Figures 1 - 3 、 Figure 6 shown, specifically, the main lock tongue assembly 1 of this case includes a main lock tongue 11 that can extend / retract relative to the lock shell 100, and a lock tongue connecting plate 12 that is fixedly connected to one end of the main lock tongue 11 and is installed inside the lock shell 100 and can drive the main lock tongue 11 to move. One end of the lock tongue connecting plate 12 is fixedly connected to the main lock tongue 11 to drive and follow the main lock tongue 11 to extend / retract into / out of the lock shell 100. The lock core dial cam assembly 4 is arranged below the lock tongue connecting plate 12, which is convenient for driving the lock tongue connecting plate 12 when rotating, so as to drive and follow the main lock tongue 11 to extend / retract into / out of the lock shell 100.
[0027] Furthermore, referring to Figure 1As shown, an elastic reset device 6 is further installed between the lock tongue connecting plate 12 and the lock housing 100, and the elastic reset device 6 is limitedly engaged with the lock tongue connecting plate 12. It should be noted that the elastic reset device 6 is limitedly engaged with the lock tongue connecting plate 12, that is, the elastic reset device 6 achieves limited engagement / release of limited engagement with the lock tongue connecting plate 12 through its elasticity. When the elastic reset device 6 is limitedly engaged with the lock tongue connecting plate 12, the two are relatively fixed. When the limited engagement of the elastic reset device 6 with the lock tongue connecting plate 12 is released, the two are relatively movable. Specifically, when the lock core peach assembly 4 rotates, the elastic reset device 6 is driven to operate, thereby releasing the limited engagement of the elastic reset device 6 with the lock tongue connecting plate 12. At this time, the user can rotate the lock core peach assembly 4, thereby driving the lock tongue connecting plate 12 to extend / retract into the lock housing 100. On the contrary, when the elastic reset device 6 and the lock tongue connecting plate 12 are in limited cooperation, the lock core peach assembly 4 is restricted by the limited cooperation between the two. At this time, the user needs to first use the lock core peach assembly 4 to move the elastic reset device 6 to release the limited cooperation between the two, otherwise the user cannot move the lock core peach assembly 4. This limiting structure makes the transmission between the two good, can make the movement of the lock tongue connecting plate 12 more stable, thereby achieving the effect of stable opening and closing the lock, and the elastic reset device 6 automatically resets, which is convenient to implement.
[0028] To describe the specific structure of the elastic reset device 6, please refer to Figures 1 - 4 、 Figure 6 As shown, the elastic reset device 6 in this embodiment includes a travel plate 61 movably mounted on the lock housing 100. A fixed plate 62 is provided on the lock housing 100, positioned above the travel plate 61. The travel plate 61 is elastically connected to the fixed plate 62 via a first spring 63. In a specific implementation, the fixed plate 62 is fixedly mounted on the lock housing 100, and the travel plate 61 is elastically connected to the fixed plate 62 via the first spring 63, enabling the travel plate 61 to be movably connected and elastically reset. The travel plate 61 is provided with a first and a second reciprocal hole 611, 612. A first pin 101 is disposed in the first reciprocal hole 611, and a second pin 102 is disposed in the second reciprocal hole 612. The provision of the first and second reciprocal holes 611, 612 allows the travel plate 61 to move within the limits of the first and second reciprocal holes 611, 612. In a specific implementation, the first and second pins 101, 102 are both fixedly connected to the bottom of the lock housing 100, thereby limiting the travel range of the travel plate 61 to a certain extent. When the lock core shifter assembly 4 rotates, it abuts against the travel plate 61, thereby driving the travel plate 61 to move upward. When the lock core shifter assembly 4 rotates away from the state of abutting the travel plate 61, the travel plate 61 automatically returns to its original position downward under the action of the first spring 63.
[0029] like Figure 1 、 Figure 5As shown in the figure, the compression-resistant structure of this case includes a fixing base 7 fixedly arranged on the lock housing 100 through a first pin 101, and a connection hole 72 is provided on the fixing base 7. During specific implementation, the first pin 101 penetrates into the connection hole 72 to fixedly connect the fixing base to the lock housing 100. To further stabilize the connection between the lower end of the fixing base 7 and the lock housing 100, and prevent the axial pressure when the main lock tongue assembly 1 retracts relative to the lock housing 100 from hitting the fixing base 7 for a long time, resulting in loosening, shaking or displacement of the fixing base 7, a clamping block 71 is provided on the fixing base 7, and a clamping groove 110 for the clamping block 71 to be inserted into is also provided at the upper end of the lock housing 100. The connection between the lower end of the fixing base 7 and the lock housing 100 is further stabilized by the clamping block 71 being inserted into the clamping groove 110. The fixing base 7 covers the upper part of the stroke plate 61. According to the above, the lock tongue connecting plate 12 is movably connected above the stroke plate 61, that is to say, the fixing base 7 covers the upper parts of the lock tongue connecting plate 12 and the stroke plate 61. The right side of the fixing base 7 abuts against the inner side wall of the lock housing 100, and an abutting part 71 for the stroke plate 61 to abut against is provided on the left side of the fixing base 7. In this way, since the stroke plate 61 moves up and down within the range restricted by the first kidney-shaped hole 611 and the second kidney-shaped hole 612, and both the fixing base 7 and the stroke plate 61 are connected and fixed by the first pin 101, when the lock tongue connecting plate 12 is subjected to an axially applied pressure, it is jointly compressed by the first pin 101 in the fixing base 7 and the two stress points at the abutting position between the right side of the fixing base 7 and the inner side wall of the lock housing 100. This structure has a more uniform stress and a greater stress intensity, can effectively prevent the lock tongue connecting plate 12 from being deformed or damaged, is not prone to the situation of the lock body being stuck, and extends the service life of the lock body.
[0030] Furthermore, as Figure 1 , Figure 2 , Figure 4 , Figure 6As shown, a first connecting plate 613 is vertically provided upward on the stroke plate 61. A first through hole 6131 is formed in the first connecting plate 613. A plurality of convex teeth 121 are provided at the upper end of the lock tongue connecting plate 12 for facilitating insertion into the first through hole 6131. When the convex teeth 121 are inserted into the first through hole 6131, the lock tongue connecting plate 12 and the stroke plate 61 are in a limit fit state; when the convex teeth 121 are disengaged from the first through hole 6131, the lock tongue connecting plate 12 and the stroke plate 61 are in a state of releasing the limit fit. A plurality of grooves 122 are provided at the lower end of the lock tongue connecting plate 12 for facilitating the entry of the lock core pick assembly 4 when it rotates. After the lock core pick assembly 4 rotates into the grooves 122, it can drive the lock tongue connecting plate 12 to act. A third kidney-shaped hole 123 is also formed in the lock tongue connecting plate 12. The lock tongue connecting plate 12 is movably connected to the first pin 101 through the third kidney-shaped hole 123. The setting of the third kidney-shaped hole 123 facilitates the movement of the lock tongue connecting plate 12 within the limit range of the third kidney-shaped hole 123. An arc-shaped portion 614 protruding downward is provided at the lower end of the stroke plate 61. When the lock core pick assembly 4 rotates, it abuts against the arc-shaped portion 614 to drive the stroke plate 61 to move upward, thereby releasing the limit fit state between the lock tongue connecting plate 12 and the stroke plate 61. By providing the arc-shaped portion 614, in cooperation with the first spring 63, the stroke plate 61 can achieve two-stage adjustment or three-stage adjustment of the main lock tongue 11. Specifically, during implementation, the user can configure the corresponding number of convex teeth 121 and grooves 122 on the lock tongue connecting plate 12 according to requirements, which is beneficial to further improving the anti-theft performance. Preferably, two convex teeth 121 and two grooves 122 are configured in this case.
[0031] Specifically, as Figure 1 、 Figure 2 、 Figure 6As shown in the figure, the bevel tongue assembly 2 of this case includes a rotatable bevel tongue 21 and a connecting rod 22 with one end connected to the bevel tongue 21. The other end of the connecting rod 22 is connected to the handle dial cam assembly 3, and a second spring 23 is sleeved on the connecting rod 22. The specific structure inside the reversible bevel tongue assembly 2 of this case is not limited to the structure described in this case. The common reversing bevel tongue assembly 2 in this field can be used. This is a technology publicly known in this field. As long as the reversing function can be achieved, it will not be elaborated here. Here, it needs to be specifically explained that a third pin 103 is installed on the lock housing 100 of this case. The lower end of the third pin 103 is elastically connected to a movable plate 92 through a third spring 91, and when the bevel tongue assembly 2 retracts into the lock body, the end of the connecting rod 22 abuts against the movable plate 92, and the lower end of the movable plate 92 is slidably connected to the lock housing 100. During specific implementation, a rib is provided at the lower end of the movable plate 92, and a through hole for the rib to slide therein is opened on the lock housing 100. The through hole can also be a slide rail adapted to the rib. When the user installs the lock body of this case and needs to change the direction of the bevel tongue 21, the user only needs to push the movable plate 92 upward, then push the bevel tongue 21 into the lock housing and flip it to achieve commutation. And under the action of the third spring 91, the movable plate 92 can automatically reset after commutation. When the movable plate 92 automatically resets, one end of it abuts against the lock housing 100. When the user uses the handle dial cam assembly 3 to open the door, the end of the connecting rod 22 abuts against the movable plate 92, effectively preventing the end of the connecting rod 22 from directly hitting the lock housing 100 and being able to effectively protect the lock housing 100. This structure has a greater force-bearing strength. And the movable plate 92 is movably connected to the lock housing 100 through the third spring 91. Compared with the reversing member fixedly connected to the lock housing 100 in the prior art, which can only be fixed after one commutation, the structure of this case can be commutated multiple times, is convenient to use, and reduces the replacement cost. The reversing member fixedly connected to the lock housing 100 in the prior art is prone to jump open after long-term use, resulting in the bevel tongue 21 being stuck and unable to unlock. The movable plate 92 of this case is under the elastic force of the third spring 91 and will not jump and cannot unlock, which has good practicability.
[0032] Under the spring pressure, it will not jump.
[0033] Refer to Figure 1 、 Figure 2 、 Figure 6As shown in the figure, the specific structure of the handle and cam component 3 of this case is described. The handle and cam component 3 of this case includes an upper cam 31 connected to the first linkage rod 5, a lower cam 32 disposed between the upper cam 31 and the lock housing 100, and a torsion spring 33 embedded between the upper cam 31 and the lower cam 32. The lock housing 100 is further provided with a fourth pin 104 and a hook portion 105 located on the outer periphery of the upper cam 31 and the lower cam 32. One end of the torsion spring 33 abuts against the fourth pin 104, and the other end is hooked to the hook portion 105. By connecting the two ends of the torsion spring 33 to the fourth pin 104 and the hook portion 105 respectively, the overall torsion of the handle and cam component 3 of this case is increased, enabling it to withstand greater stress and being less likely to be damaged or loosened, further enhancing safety and stability, effectively preventing children from opening and closing the door, and meeting the needs of different users. One end of the upper cam 31 and the lower cam 32 is connected to the connecting rod 22 through a connecting seat 34 to drive the connecting rod 22 by the handle and cam component 3 to open the door.
[0034] As described above, the present case protects a lock body with anti-pressure properties. All technical solutions identical or similar to those of the present case should be regarded as falling within the protection scope of the present case.
Claims
1. An anti-pressure lock body, comprising a lock case (100), wherein a main lock tongue assembly (1) is movably connected inside the lock case (100), and a reversible inclined tongue assembly (2) is arranged above the main lock tongue assembly (1). A handle dial cam assembly (3) and a lock core dial cam assembly (4) are further arranged inside the lock case (100), and it is characterized in that: The main lock tongue assembly (1) is linked and connected to the handle cam assembly (3) through a linkage rod (5). The oblique tongue assembly (2) is linked and connected to the handle cam assembly (3). When the lock core cam assembly (4) rotates, it can drive the main lock tongue assembly (1) to extend / retract relative to the lock housing (100). A compressive structure for reducing the axial pressure of the main lock tongue assembly (1) when the main lock tongue assembly (1) retracts relative to the lock housing (100) is further provided inside the lock housing (100).
2. The anti-pressure lock body according to claim 1, characterized in that: The main lock tongue assembly (1) includes a main lock tongue (11) that can extend / retract relative to the lock housing (100), and a lock tongue connecting plate (12) fixedly connected to one end of the main lock tongue (11) and installed inside the lock housing (100) to drive the main lock tongue (11) to move. The lock core cam assembly (4) is arranged below the lock tongue connecting plate (12).
3. The anti-pressure lock body according to claim 2, characterized in that: An elastic reset device (6) is further installed between the lock tongue connecting plate (12) and the lock housing (100). The elastic reset device (6) is in limit cooperation with the lock tongue connecting plate (12). When the lock core cam assembly (4) rotates, it drives the elastic reset device (6) to act, thereby releasing the limit cooperation between the elastic reset device (6) and the lock tongue connecting plate (12).
4. The anti-pressure lock body according to claim 3, wherein: The elastic reset device (6) includes a travel plate (61) movably installed on the lock housing (100). A fixed plate (62) is provided on the lock housing (100) above the travel plate (61). The travel plate (61) is elastically connected to the fixed plate (62) through a first spring (63). The travel plate (61) is provided with a first waist-shaped hole (611) and a second waist-shaped hole (612). A first pin (101) is arranged in the first waist-shaped hole (611), and a second pin (102) is arranged in the second waist-shaped hole (612). When the lock core cam assembly (4) rotates, it abuts against the travel plate (61) to drive the travel plate (61) to move upward.
5. The anti-pressure lock body according to claim 4, characterized in that: The compressive structure includes a fixed seat (7) fixedly arranged on the lock housing (100) through a first pin (101). A connection hole (72) is provided on the fixed seat (7). A clamping block (71) is provided on the fixed seat (7). A card slot (110) for the clamping block (71) to be inserted into is further provided at the upper end of the lock housing (100). The fixed seat (7) covers above the travel plate (61). The right side of the fixed seat (7) abuts against the inner side wall of the lock housing (100). A contact portion (71) for the travel plate (61) to abut against is provided on the left side of the fixed seat (7).
6. The anti-pressure lock body according to claim 5, characterized in that: The stroke plate (61) is vertically provided with a first connecting plate (613). A first through hole (6131) is formed in the first connecting plate (613). A plurality of convex teeth (121) for facilitating insertion into the first through hole (6131) are provided at the upper end of the locking tongue connecting plate (12), and a plurality of grooves (122) for facilitating entry when the lock core pick component (4) rotates are provided at the lower end of the locking tongue connecting plate (12). A third waist-shaped hole (123) is also formed in the locking tongue connecting plate (12). The locking tongue connecting plate (12) is movably connected to the first pin (101) through the third waist-shaped hole (123). The lower end of the stroke plate (61) is provided with an arc-shaped portion (614) protruding downward. When the lock core pick component (4) rotates, it abuts against the arc-shaped portion (614) to drive the stroke plate (61) to move upward.
7. A pressure-resistant lock body according to any one of claims 1-6, characterized in that: The oblique tongue assembly (2) includes a rotatable oblique tongue (21) and a connecting rod (22) with one end connected to the oblique tongue (21). The other end of the connecting rod (22) is connected to the handle pick component (3). A second spring (23) is sleeved on the connecting rod (22). A third pin (103) is installed on the lock case (100). The lower end of the third pin (103) is elastically connected to a movable plate (92) through a third spring (91), and when the oblique tongue assembly (2) retracts into the lock body, the end of the connecting rod (22) abuts against the movable plate (92). The lower end of the movable plate (92) is slidably connected to the lock case (100).
8. The anti-pressure lock body according to claim 7, characterized in that: The handle pick component (3) includes an upper pick (31) connected to the first linkage rod (5), a lower pick (32) arranged between the upper pick (31) and the lock case (100), and a torsion spring (33) embedded between the upper pick (31) and the lower pick (32). The lock case (100) is also provided with a fourth pin (104) and a hook portion (105) located on the outer periphery of the upper pick (31) and the lower pick (32). One end of the torsion spring (33) abuts against the fourth pin (104), and the other end is hooked to the hook portion (105). One end of the upper pick (31) and the lower pick (32) is connected to the connecting rod (22) through a connecting seat (34).