A door outer card clamping and plug-in lock body

Abstract

The utility model discloses a door outer anti -card -inserting anti -inserting lock body relates to lock technical field, it includes the shell subassembly, guide plate, bevel tongue subassembly, anti -inserting board, anti -inserting board reset spring, touch tongue subassembly, three bolt subassembly, three bolt push -plate subassembly, main bolt knock out push plate, main bolt lock core, anti -inserting bevel tongue push -piece subassembly, main bolt retract push plate and cover subassembly etc., when locking when closing the door, touch tongue subassembly and bevel tongue subassembly contact door frame buckle piece and retract, bevel tongue subassembly pops out and hangs buckle piece, touch tongue subassembly pops up and buckle piece, and anti -inserting board loses the position and is driven by reset spring and opens and tightens bevel tongue subassembly after the top; main bolt lock core counterclockwise turns 116, and through main bolt knock out push plate transmission, makes three bolt subassembly pop out and trigger detection switch. When unlocking when opening the door, main bolt lock core clockwise turns 104, through main bolt retract push plate transmission, makes three bolt subassembly, anti -inserting board and bevel tongue subassembly retract. The lock body of this lock body anti -inserting anti -theft effect is good, and the action is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to an external lock body with anti-card and anti-insertion functions. It is suitable for various types of doors requiring high security protection, such as those in homes, offices, and commercial stores. It can be adapted to doors made of various materials, such as wooden doors and metal doors, to achieve reliable locking and prevent unauthorized opening of the door. Background Technology

[0002] In the field of locks, traditional lock bodies have significant shortcomings in preventing card insertion from the outside. On the one hand, many lock bodies lack effective protective structures specifically designed to prevent card insertion. Criminals can easily use thin tools such as cards to insert into the gaps in the lock body from the outside, illegally manipulating internal components to unlock it, posing a serious threat to users' property and personal safety. On the other hand, while some lock bodies have certain anti-theft designs, their internal transmission structures are not stable and reliable enough. Under long-term use or external forces, problems such as transmission failure and rapid component wear can easily occur, affecting not only the normal use of the lock body but also reducing its anti-pry and anti-insertion performance. In addition, some lock bodies have poor linkage between auxiliary anti-theft structures such as the top and bottom bars and the main lock body, failing to form a comprehensive and coordinated anti-theft system and making it difficult to effectively deal with various illegal unlocking methods.

[0003] Therefore, it is necessary to design an external anti-card insertion lock to solve the problems mentioned above. Utility Model Content

[0004] This utility model aims to provide a door lock body that prevents cards from being inserted from the outside. By optimizing the structure and linkage of the various components inside the lock body, the lock body's ability to prevent cards from being inserted is improved, while the stability of the lock body's transmission and the overall anti-theft performance are enhanced.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses an anti-card insertion and anti-pickup lock body for doors, including a protective shell assembly, a guide plate, a beveled tongue assembly, an anti-pickup plate, an anti-pickup plate return spring, a touch tongue assembly, a three-bolt assembly, a three-bolt actuating plate assembly, a main bolt push plate, a main bolt lock cylinder, an anti-pickup beveled tongue actuating plate assembly, a main bolt retraction push plate, a small actuating head, a safety bolt assembly, a lower actuating plate, a top and bottom rod, a pressure pad, a lower actuating plate for the lock tongue, an upper top and bottom hook assembly, a single-section actuating shaft, and a protective cover assembly.

[0006] Furthermore, the touch tongue assembly and the angled tongue assembly can jointly contact the door frame latch piece and retract along the guide plate towards the protective shell assembly; when the angled tongue assembly pops out and hooks the latch piece, the touch tongue assembly can pop out under the action of spring force and press against the door frame latch piece; when the touch tongue assembly and the angled tongue assembly retract along the guide plate to a stroke of 12mm, the three-bolt assembly meets the condition of being fully ejected.

[0007] Furthermore, after the anti-insertion plate loses its limiting position under the contact tongue assembly, it can spring open under the elastic force of the anti-insertion plate reset spring, pressing against the side of the oblique tongue assembly to form a physical barrier against card prying.

[0008] Furthermore, when the main bolt lock cylinder rotates counterclockwise by 116°, it contacts the main bolt and pushes out the push plate. Through the lever arm transmission, it drives the three-bolt actuation plate assembly and the lower actuation plate to move, causing the three-bolt assembly to pop out along the guide rivet on the protective shell assembly. The rivet (trigger structure) on the three-bolt actuation plate assembly can contact the main bolt detection switch to complete the door closing and locking command.

[0009] Furthermore, when the main bolt cylinder rotates 104° clockwise, it contacts the main bolt retraction push plate on the anti-insertion latch lever assembly. Through the lever arm transmission, it drives the three-bolt actuation plate assembly to retract the three-bolt assembly and the latch assembly. At the same time, the anti-insertion latch lever assembly contacts the anti-insertion plate and retracts it, thereby driving the latch assembly to retract, thus completing the door opening and unlocking command.

[0010] Furthermore, the cover assembly and the shell assembly are detachably connected by a snap-fit ​​structure to form a closed cavity that encloses the internal transmission components, preventing dust from affecting the transmission accuracy; one end of the small dial engages with the groove of the three-bolt actuation plate assembly, and the other end abuts against the protrusion of the three-bolt assembly, forming a linkage transmission structure.

[0011] Furthermore, the safety bolt assembly includes a safety lever and a safety tongue. When the safety lever rotates, it can drive the safety tongue to extend and abut against the side of the latch assembly, restricting its retraction. The top and bottom rods are linked to the three-bolt actuation plate assembly through a connector, and synchronously realize the up and down extension and retraction movements with the pop-out / retraction of the three-bolt assembly, realizing the two-way locking of the door body.

[0012] Furthermore, the pressure pad is made of elastic material and is located at the contact point between the main bolt push plate and the protective shell assembly to form a buffer fit and reduce the collision and wear of components during lever transmission; one end of the lower latch lever is hinged to the latch assembly, and the other end is in contact with the lever of the anti-insertion latch lever assembly, forming an intermediate connecting part of the latch transmission to ensure smooth retraction of the latch assembly.

[0013] Furthermore, the upper hook assembly includes a hook body and a return spring. The hook body is connected to the top of the upper and lower rods and can hook / unhook the door frame as the upper and lower rods move, thus strengthening the locking of the top of the door. The first section of the pivot shaft runs horizontally through the shell assembly and the cover assembly. The three-bolt actuation plate assembly and the lower actuation plate are both sleeved on the first section of the pivot shaft to form a rotation fulcrum, thereby improving the transmission accuracy of the three-bolt actuation plate assembly.

[0014] Furthermore, the guide plate is provided with a guide groove adapted to the tongue assembly, and the extension direction of the guide groove is consistent with the pop-out / retract direction of the tongue assembly, ensuring the accurate movement trajectory of the tongue assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model, through the design of an anti-card insertion and anti-pry lock body, achieves the following effects: 1. The lock body utilizes a dual mechanism of "touch tongue assembly limiting + anti-pry plate reset spring drive." After the touch tongue assembly tightens against the latch plate, the anti-pry plate is released, and the anti-pry plate springs open and tightens against the side of the oblique tongue assembly, forming a stable physical barrier. This avoids the problem of spring force attenuation caused by a single spring drive, effectively preventing card prying and providing significant anti-pry and anti-theft effects; 2. The main bolt cylinder drives the three-bolt actuating plate assembly and the lower actuating plate through a lever arm transmission, causing the three-bolt assembly to pop out or retract along the guide structure on the protective shell assembly. This transmission method utilizes the lever principle, resulting in high transmission efficiency and structural stability. It reduces wear between components, extends the service life of the lock body, and ensures smooth unlocking and locking during long-term use. 3. The top and bottom rods are linked with the three-bolt actuation plate assembly, and the upper top and bottom hook assembly cooperates with the top and bottom rods. When the lock body is unlocking or locking, the top and bottom rods and the upper top and bottom hook assembly can simultaneously extend and retract, hook or detach from the door frame, forming a comprehensive and coordinated anti-theft system with the main lock body structure. This enhances the anti-theft performance of the lock body from multiple dimensions and can effectively deal with various illegal unlocking methods. 4. The protective cover assembly and the protective shell assembly form a closed cavity to enclose the internal transmission components, which plays a good protective role for the internal components and reduces the impact of external dust and impurities on the transmission structure. The pressure pad is made of elastic material and is set at the contact point between the main bolt push plate and the protective shell assembly, which plays a buffering role, reduces the impact between components, and further improves the stability of the lock body transmission and the durability of the components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a side view of the structure of this utility model.

[0017] In the diagram: 1. Sheath assembly; 2. Guide plate; 3. Lug assembly; 4. Anti-insertion plate; 5. Anti-insertion plate return spring; 6. Touch tongue assembly; 7. Three-bolt assembly; 8. Three-bolt actuating plate assembly; 9. Main bolt extension push plate; 10. Main bolt cylinder; 11. Anti-insertion lug tongue lever assembly; 12. Main bolt retraction push plate; 13. Small lever; 14. Safety bolt assembly; 15. Lower actuating plate; 16. Top and bottom rods; 17. Pressure pad; 18. Lower lever of the latch; 19. Upper top and bottom hook assembly; 20. First section lever shaft; 21. Sheath assembly. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete. Example

[0020] Please see Figure 1 This embodiment discloses an anti-card insertion lock body for doors. The lock body includes a protective shell assembly 1, a guide plate 2, a latch assembly 3, an anti-insertion plate 4, an anti-insertion plate return spring 5, a contact tongue assembly 6, a three-bolt assembly 7, a three-bolt actuating plate assembly 8, a main bolt extension push plate 9, a main bolt lock cylinder 10, an anti-insertion latch actuating plate assembly 11, a main bolt retraction push plate 12, a small actuating head 13, a safety bolt assembly 14, a lower actuating plate 15, a top and bottom rod 16, a pressure pad 17, a lower latch actuating plate 18, an upper top and bottom hook assembly 19, a single-section actuating shaft 20, and a protective cover assembly 21 located on the outside. Among them, the shell assembly 1 is made of 1.5mm thick transparent film material, the guide plate 2 is a 24*240 square double component structure (made of 201 stainless steel), the tongue assembly 3 is an injection steel fork structure, the three-bolt assembly 7 is made of 3.0mm thick 201 stainless steel material, the three-bolt toggle plate assembly 8 is a 0.8mm thick quenched electroplated part, and the touch tongue assembly 6 is an electroplated part, ensuring that each core component has sufficient structural strength and corrosion resistance to meet long-term transmission and anti-theft requirements.

[0021] The door closing and locking process in the above embodiment is as follows: Initial triggering stage: When the door is closed, the touch tongue assembly 6 and the latch assembly 3 first contact the latch plate on the door frame. Under the pressure of the door closing, the two retract along the preset trajectory on the guide plate 2 towards the housing assembly 1. This process is consistent with the action logic of "the touch tongue assembly and the latch assembly retract after contacting the latch plate" in the sensing principle. The guide plate 2 plays a precise guiding role for the movement of the two, avoiding locking failure due to movement deviation, and laying the foundation for the subsequent ejection of the three bolts assembly.

[0022] Lug Locking and Touch Tongue Reset Stages: When the three-bolt assembly 7 can fully extend, the lug latch assembly 3 extends under the driving force of the internal spring, and its end hooks onto the door frame latch, achieving initial locking of the door. At the same time, the touch tongue assembly 6 extends under its own spring force, and its top tightly presses against the door frame latch. At this time, the touch tongue assembly 6 limits the anti-insertion plate 4, and the anti-insertion plate 4 is in a compressed state. This process corresponds to the core cooperation relationship in the sensing principle of "lug latch extending and hooking the latch, and touch tongue spring resetting and pressing the latch tightly", ensuring the stability of the initial locking of the door.

[0023] Anti-insertion and anti-theft activation phase: As the touch tongue assembly 6 pops out and presses against the door frame latch, the anti-insertion plate 4 loses the limiting constraint of the touch tongue assembly 6. The anti-insertion plate return spring 5 releases its elasticity, pushing the anti-insertion plate 4 to pop open quickly. After popping open, the anti-insertion plate 4 presses tightly against the side of the latch assembly 3, forming a physical block. This step fully follows the anti-theft logic in the sensing principle that "after the anti-insertion plate loses the limiting constraint of the touch tongue, it is driven by the return spring to pop open and press against the latch". This effectively prevents external tools such as cards from being inserted to pry open the latch assembly 3, thus improving the anti-theft performance of the lock body.

[0024] Main bolt locking and detection stage: Rotate the main bolt cylinder 10 counterclockwise by 116° (the rotation angle is consistent with the counterclockwise rotation angle of the lock cylinder in the sensing principle). The end of the main bolt cylinder 10 first contacts the main bolt push plate 9. Based on the lever arm transmission principle, the main bolt push plate 9 transmits the force to the three-bolt actuation plate assembly 8 and the lower actuation plate 15, driving them to move synchronously. The three-bolt actuation plate assembly 8 drives the three-bolt assembly 7 to pop out along the guide rivet (guide structure) on the housing assembly 1 until the three-bolt assembly 7 is fully embedded in the corresponding lock hole of the door frame. During this process, the rivet (trigger structure) on the three-bolt actuation plate assembly 8 contacts the main bolt detection switch. The main bolt detection switch sends a signal to the control system to confirm the completion of the door closing and locking command. This stage strictly follows the transmission path design of "lock cylinder counterclockwise rotation → main bolt push plate transmission → three-bolt assembly popping out → detection switch triggering" in the sensing principle to ensure a stable and reliable locking process.

[0025] The door unlocking and locking process of the above embodiment is as follows: Rotate the main bolt cylinder 10 clockwise by 104° (the rotation angle is consistent with the clockwise rotation angle of the lock cylinder in the sensing principle). The end of the main bolt cylinder 10 contacts the main bolt retraction push plate 12 on the anti-insertion latch lever assembly 11. Through the lever arm transmission, the main bolt retraction push plate 12 transmits the force to the three-bolt actuation plate assembly 8, causing the three-bolt actuation plate assembly 8 to retract, thereby pulling the three-bolt assembly 7 back along the guide structure of the housing assembly 1, releasing the main bolt lock. At the same time, the anti-insertion latch lever assembly 11 contacts the anti-insertion plate 4 during the movement, pushing the anti-insertion plate 4 to overcome the elastic force of the anti-insertion plate return spring 5 and retract, releasing the limitation on the latch assembly 3. The anti-insertion latch lever assembly 11 continues to move, causing the latch assembly 3 to retract. At this time, the latching tongue assembly 6 retracts together with the latch assembly 3 under the action of the door opening force, finally completing the door unlocking command. This process perfectly matches the unlocking logic of the sensing principle: "lock cylinder rotates clockwise → main bolt retracts and push plate drives → anti-insertion plate retracts → three bolts and tongue assembly retracts," ensuring that the actions of each component are coordinated and consistent, and avoiding unlocking jams.

[0026] The working process of this utility model: I. Door Closing and Locking Procedure 1. Initial contact and retraction phase: When the door closes, the latch assembly 6 and the bevel assembly 3 jointly contact the door frame latch plate ( Figure 2 Under the pressure of the door closing, both retract along the guide plate 2 toward the shell assembly 1, reserving space for subsequent locking actions and ensuring that the three-bolt assembly 7 can be ejected smoothly.

[0027] 2. Latch locking and latch reset stage: When the three-bolt assembly 7 meets the conditions for full ejection, the latch assembly 3 is ejected under the driving force of the internal spring, and its end hooks onto the door frame latch plate, thus achieving initial locking of the door. Figure 2 At the same time, the touch tongue assembly 6 pops out under its own spring force, and the top end presses against the door frame buckle. At this time, the touch tongue assembly 6 limits the anti-insertion plate 4, and the anti-insertion plate 4 is in a compressed state.

[0028] 3. Anti-insertion and anti-theft activation phase: After the contact tongue assembly 6 tightens against the door frame latch, the anti-insertion plate 4 loses its limiting constraint, the anti-insertion plate reset spring 5 releases its elasticity, and pushes the anti-insertion plate 4 to pop open. Figure 3 The pop-out anti-insertion plate 4 tightly presses against the side of the latch assembly 3, forming a physical barrier to prevent external forces from prying open the latch assembly 3 with cards or other tools, thus improving anti-theft performance.

[0029] 4. Main Bolt Locking and Command Completion Stage: Rotate the main bolt lock cylinder 10 counterclockwise by 116°. The end of the main bolt lock cylinder 10 first contacts the main bolt push plate 9. Based on the lever arm transmission principle, the main bolt push plate 9 transmits the force to the three-bolt actuation plate assembly 8 and the lower actuation plate, driving them to move synchronously. The three-bolt actuation plate assembly 8 drives the three-bolt assembly 7 to pop out along the guide rivets on the protective shell assembly 1 until the three-bolt assembly 7 is fully embedded in the door frame lock hole. During this process, the rivets on the three-bolt actuation plate assembly 8 contact the main bolt detection switch and send a signal to confirm the completion of the door closing and locking command.

[0030] II. Door opening and unlocking process 1. Lock cylinder driving and force transmission stage: Rotate the main bolt lock cylinder 10 to make it rotate 104° clockwise. The end of the main bolt lock cylinder 10 contacts the main bolt retraction push plate 12 on the anti-insertion tongue and latch assembly 11. Through the lever arm transmission, the force is transmitted to the three bolt actuation plate assembly 8.

[0031] 2. Three-bolt assembly retraction stage: The three-bolt actuating plate assembly 8 retracts under the force, driving the three-bolt assembly 7 to retract along the guide structure of the shell assembly 1, releasing the locking constraint of the main bolt on the door body.

[0032] 3. Anti-insertion plate and latch assembly retraction stage: During the movement, the anti-insertion latch paddle assembly 11 contacts the anti-insertion plate 4, pushing the anti-insertion plate 4 to overcome the elastic force of the anti-insertion plate return spring 5 and retract, releasing the limit on the latch assembly 3; then the anti-insertion latch paddle assembly 11 continues to move, driving the latch assembly 3 to retract, and the touch tongue assembly 6 retracts together with the latch assembly 3 under the action of the door opening force, finally completing the door opening and unlocking command.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A door lock body designed to prevent card insertion from the outside, characterized in that: It includes a protective shell assembly (1), a guide plate (2), a latch assembly (3), an anti-insertion plate (4), an anti-insertion plate return spring (5), a contact tongue assembly (6), a three-bolt assembly (7), a three-bolt actuating plate assembly (8), a main bolt push plate (9), a main bolt lock cylinder (10), an anti-insertion latch actuating plate assembly (11), a main bolt retraction push plate (12), a small actuating head (13), a safety bolt assembly (14), a lower actuating plate (15), a top and bottom rod (16), a pressure pad (17), a lower latch actuating plate (18), an upper top and bottom hook assembly (19), a single-section actuating shaft (20), and a protective cover assembly located on the outside (21). The touch tongue assembly (6) and the oblique tongue assembly (3) can jointly contact the door frame buckle and retract along the guide plate (2) toward the shell assembly (1); when the oblique tongue assembly (3) pops out and hooks the buckle, the touch tongue assembly (6) can pop out under the action of spring force and press against the door frame buckle; After the anti-insertion plate (4) loses the limiting position of the touch tongue assembly (6), it can spring open under the elastic force of the anti-insertion plate reset spring (5) and press against the oblique tongue assembly (3). When the main bolt lock cylinder (10) rotates counterclockwise, it contacts the main bolt push plate (9), which drives the three bolt actuation plate assembly (8) and the lower actuation plate (15) to move through the lever arm transmission, so that the three bolt assembly (7) pops out along the guide structure on the housing assembly (1), and the trigger structure on the three bolt actuation plate assembly (8) can contact the main bolt detection switch; When the main bolt cylinder (10) rotates clockwise, it contacts the main bolt retraction push plate (12) on the anti-insertion latching lever assembly (11), and drives the three-bolt actuation plate assembly (8) through lever arm transmission, retracting the three-bolt assembly (7) and the latching assembly (3). At the same time, the anti-insertion latching lever assembly (11) contacts the anti-insertion plate (4) and retracts it, thereby driving the latching assembly (3) to retract. The touch tongue assembly (6) and the oblique tongue assembly (3) can jointly contact the door frame buckle and retract along the guide plate (2) toward the shell assembly (1); when the oblique tongue assembly (3) pops out and hooks the buckle, the touch tongue assembly (6) can pop out under the action of spring force and press against the door frame buckle; After the anti-insertion plate (4) loses the limiting position of the touch tongue assembly (6), it can spring open under the elastic force of the anti-insertion plate reset spring (5) and press against the oblique tongue assembly (3). When the main bolt lock cylinder (10) rotates counterclockwise, it contacts the main bolt push plate (9), which drives the three bolt actuation plate assembly (8) and the lower actuation plate (15) to move through the lever arm transmission, so that the three bolt assembly (7) pops out along the guide structure on the housing assembly (1), and the trigger structure on the three bolt actuation plate assembly (8) can contact the main bolt detection switch; When the main bolt lock cylinder (10) rotates clockwise, it contacts the main bolt retraction push plate (12) on the anti-insertion tongue lever assembly (11), and drives the three bolt actuation plate assembly (8) through the lever arm transmission, retracting the three bolt assembly (7) and the tongue assembly (3). At the same time, the anti-insertion tongue lever assembly (11) contacts the anti-insertion plate (4) and retracts it, thereby driving the tongue assembly (3) to retract.

2. The door anti-card insertion lock body according to claim 1, characterized in that: The cover assembly (21) and the shell assembly (1) are detachably connected by a snap-fit ​​structure to form a closed cavity that encloses the internal transmission components.

3. The door anti-card insertion lock body according to claim 1, characterized in that: One end of the small dial (13) engages with the groove of the three-bolt actuation plate assembly (8), and the other end abuts against the boss of the three-bolt assembly (7), forming a linkage transmission structure.

4. The door anti-card insertion lock body according to claim 1, characterized in that: The safety bolt assembly (14) includes a safety lever and a safety tongue. When the safety lever is rotated, it can drive the safety tongue to extend and abut against the side of the tongue assembly (3), thus restricting its retraction.

5. The door anti-card insertion lock body according to claim 1, characterized in that: The top and bottom rods (16) are linked to the three-bolt actuation plate assembly (8) through a connector, and can move up and down synchronously with the pop-out / retraction of the three-bolt assembly (7).

6. The door anti-card insertion lock body according to claim 1, characterized in that: The pressure pad (17) is made of elastic material and is located at the contact point between the main bolt push plate (9) and the shell assembly (1) to form a buffer fit.

7. A door lock body for preventing card insertion from outside, as described in claim 1, characterized in that: One end of the latching tongue lower paddle (18) is hinged to the latching tongue assembly (3), and the other end is in contact with the lever of the anti-insertion latching tongue paddle assembly (11), forming an intermediate connecting part for the latching tongue transmission.

8. A door lock body for preventing card insertion from the outside as described in claim 1, characterized in that: The upper and lower hook assembly (19) includes a hook body and a return spring. The hook body is connected to the top of the upper and lower rod (16) and can hook / unhook the door frame as the upper and lower rod (16) moves.

9. A door lock body for preventing card insertion from the outside as described in claim 1, characterized in that: The first section of the pivot shaft (20) extends laterally through the protective shell assembly (1) and the protective cover assembly (21). The three-bolt actuation plate assembly (8) and the lower actuation plate (15) are both sleeved on the first section of the pivot shaft (20) to form a rotation fulcrum.

10. A door lock body for preventing card insertion from outside, as described in claim 1, characterized in that: The guide plate (2) is provided with a guide groove that is adapted to the tongue assembly (3), and the extension direction of the guide groove is consistent with the pop-out / retract direction of the tongue assembly (3).

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