Main spring bolt mechanism of lock body and lock body

Abstract

The utility model discloses a main spring bolt mechanism of a lock body and the lock body, and the main spring bolt mechanism comprises a main spring bolt body which has an extending state and a retracting state; the main spring bolt shifting block is rotationally mounted on the lock shell and used for driving the main spring bolt body to slide; the pulling rack is used for being directly meshed or indirectly meshed with the main spring bolt shifting block, the pulling rack can drive the main spring bolt shifting block to rotate when sliding, the pulling rack is provided with a locking position and a releasing position, when the pulling rack is located at the locking position, the main spring bolt shifting block is located at the second position, and when the pulling rack is located at the releasing position, the main spring bolt shifting block is located at the releasing position; when the main spring bolt shifting block is located at the first position, the pulling rack is matched with the locking element; and the main spring bolt popping elastic piece is arranged in the lock shell and is matched with the pulling rack. When the main spring bolt mechanism is actually applied, after a door is closed and the locking element is unlocked, the main spring bolt pops up the elastic piece to drive the pulling rack to move, so that the main spring bolt body pops up automatically and is switched into an extending state.

Description

Technical Field

[0001] This utility model relates to the field of locks, specifically to the main bolt mechanism of the lock body and the lock body. Background Technology

[0002] In traditional mortise locks, the bolt mechanism does not automatically extend after each closing; it requires lifting the handle to extend it. Therefore, a bolt mechanism that can automatically extend is needed. Utility Model Content

[0003] This utility model addresses the above-mentioned problems by proposing a main locking tongue mechanism for the lock body and a lock body.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A main bolt mechanism for a lock body, the lock body including a lock shell and a locking element movably mounted on the lock shell, the main bolt mechanism of the lock body including:

[0006] The main bolt body is slidably mounted on the lock housing. The main bolt body has a main bolt portion and a main bolt plate that are connected to each other. The main bolt plate has a drive groove. The main bolt body has an extended state and a retracted state.

[0007] The main latch actuating block is rotatably mounted on the lock housing. The main latch actuating block can rotate around a first rotation axis. The main latch actuating block has a driving block that extends into the driving groove. When the main latch actuating block rotates, it can drive the main latch body to slide through the cooperation of the driving block and the driving groove. The main latch actuating block has a first position and a second position. When the main latch actuating block is in the first position, the main latch body is in an extended state. When the main latch actuating block is in the second position, the main latch body is in a retracted state.

[0008] A pull rack is slidably mounted on the lock housing. The pull rack is used to directly or indirectly engage with the main latch actuating block. When the pull rack slides, it can drive the main latch actuating block to rotate. The pull rack has a locked position and a released position. When the pull rack is in the locked position, the main latch actuating block is in the second position. When the pull rack is in the released position, the main latch actuating block is in the first position. The pull rack has a locking part, which is used to cooperate with the locking element. When the locking element locks the locking part, the pull rack cannot slide and is in the locked position. When the locking element does not lock the locking part, the pull rack can slide to the released position after being subjected to force.

[0009] The main latch ejector spring is installed inside the lock housing and cooperates with the pull rack to drive the pull rack to slide to the release position when the locking element is not locking the locking part.

[0010] In actual use, after the door is closed and the locking element is unlocked, the main latch ejector elastic element drives the rack to move, causing the main latch body to automatically pop out and switch to the extended state.

[0011] In one embodiment of the present invention, the main locking tongue actuating block has teeth, and the pulling rack engages with the teeth.

[0012] In one embodiment of the present invention, the main latch mechanism further includes a transmission component rotatably mounted on the lock housing. The rotatable component is fixed relative to the main latch actuating block, and the rotatable component and the main latch actuating block can rotate synchronously. The transmission component has teeth, and the pulling rack meshes with the teeth.

[0013] In one embodiment of this utility model, the main locking tongue mechanism further includes:

[0014] The rotating paddle is rotatably mounted on the lock housing and fixed relative to the main bolt actuating block. It can rotate synchronously with the main bolt actuating block. The rotating paddle has a first mating part disposed adjacent to the first rotation axis.

[0015] A lock cylinder, mounted on a lock housing, has a lock head cam having an initial position and an unlocked position;

[0016] A lock cylinder lever, movably mounted on the lock housing, the lock cylinder lever having a pressure-receiving portion and a second mating portion, the pressure-receiving portion being located on one side of the lock cylinder and adjacent to the lock cylinder cam; and

[0017] During the process of the lock head cam rotating from the initial position to the unlock position, the lock head cam contacts and engages with the pressure part, driving the lock head lever to move. After the lock head lever moves, the second engaging part contacts and engages with the first engaging part, driving the rotating lever and the main lock tongue actuating block to rotate synchronously, so that the main lock tongue body switches from the extended state to the retracted state. At the same time, the main lock tongue actuating block drives the rack to slide to the locking position and locks it with the locking element.

[0018] In this application, the main bolt mechanism has a pressure-bearing part located on one side of the lock cylinder and adjacent to the lock head cam. The lock head cam can drive the lock head lever to move with a small rotation angle. The first mating part of the main bolt lever is located adjacent to the first rotation axis. In this way, the first mating part only needs to move a small range to achieve a large rotation angle of the main bolt lever. The combination of the two ("the pressure-bearing part is located on one side of the lock cylinder and adjacent to the lock head cam" and "the first mating part is located adjacent to the first rotation axis") enables the main bolt mechanism to rotate a small angle when unlocked with a key, and the unlocking process takes a short time.

[0019] In one embodiment of the present invention, when the lock cam rotates from the initial position to the unlocked position, the angle of rotation of the lock cam is less than or equal to 90°.

[0020] In one embodiment of the present invention, the main latch plate is located between the main latch actuating block and the rotating paddle.

[0021] The drive block passes through the drive slot;

[0022] One end of the drive block is fixed to the main latch actuating block, and the other end is inserted into the rotating paddle; or, one end of the drive block is fixed to the rotating paddle, and the other end is inserted into the main latch actuating block.

[0023] This design ensures even force distribution on the main locking tongue plate, resulting in greater stability and reliability during operation.

[0024] In one embodiment of the present invention, the rotating paddle also has a third mating part, the third mating part and the first mating part are both located on the same side of the first rotation axis, and the distance of the third mating part from the first rotation axis is greater than the distance of the first mating part from the first rotation axis;

[0025] The lock lever has a fourth mating part that mates with the third mating part;

[0026] During the process of the lock head cam rotating from the initial position to the unlock position, the lock head cam contacts and engages with the pressure part, driving the lock head lever to move. Initially, the fourth engagement part of the lock head lever contacts and engages with the third engagement part, driving the lever to rotate. Then, the fourth engagement part and the third engagement part no longer contact and engage, but the second engagement part contacts and engages with the first engagement part, continuing to drive the lever to rotate, causing the main bolt body to switch from the extended state to the retracted state. At the same time, the main bolt lever block drives the rack to slide to the locking position and locks it with the locking element.

[0027] The first mating part is located near the first rotation axis, which results in a small lever arm. At the beginning of the rotation, a large force needs to be applied to the key. This application solves this problem by setting a third mating part (the distance between the third mating part and the first rotation axis is greater than the distance between the first mating part and the first rotation axis) and a fourth mating part. At the beginning of unlocking, the third and fourth mating parts drive the rotating lever to rotate. Compared with the initial engagement with the first mating part, the lever arm is increased, which can drive the rotating lever to rotate better. Then, the fourth mating part no longer engages with the third mating part, but the second mating part engages with the first mating part to continue driving the rotating lever to rotate, and finally the main lock tongue body switches from the extended state to the retracted state.

[0028] In one embodiment of the present invention, the first mating part and the third mating part are respectively located on both sides of the lock head lever.

[0029] In one embodiment of this utility model, the lock head lever is slidably disposed on the lock housing; the main bolt ejection elastic element is a spring, torsion spring or tension spring.

[0030] This application also discloses a lock body, including the main bolt mechanism of the lock body described above.

[0031] The beneficial effects of this utility model are: when the main locking tongue mechanism of this application is actually used, after the door is closed and the locking element is unlocked, the main locking tongue pops out the elastic element and drives the rack to move, so that the main locking tongue body automatically pops out and switches to the extended state. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the latch plate, lock housing, and latch mechanism;

[0033] Figure 2 This is the front view of the slant latch mechanism;

[0034] Figure 3 yes Figure 2 Sectional view of AA;

[0035] Figure 4 This is a schematic diagram of the main body of the slanted tongue, the slanted tongue accessory box, and the rotating sleeve;

[0036] Figure 5 This is a schematic diagram of the locking element, the reset elastic element, and the latch mechanism;

[0037] Figure 6 This is an exploded view of the locking element, the reset elastic element, and the latch mechanism;

[0038] Figure 7 This is a schematic diagram of the latch plate and lock housing when the latch mechanism is in the closed position;

[0039] Figure 8 This is a schematic diagram of the latch plate and lock body when the latch mechanism is in the closed but not fully closed state;

[0040] Figure 9 This is a schematic diagram of the latch plate and lock body at another angle when the latch mechanism is in the closed but not fully closed state;

[0041] Figure 10 This is a schematic diagram of the rotating sleeve moving outward and just making contact with the locking element;

[0042] Figure 11 This is a schematic diagram of another angle when the rotating sleeve moves outward and just contacts the locking element;

[0043] Figure 12 This is a schematic diagram of another angle when the rotating sleeve moves outward and just contacts the locking element;

[0044] Figure 13 This is a schematic diagram of the latch plate, lock housing, and latch mechanism when the latch mechanism is in the closed position;

[0045] Figure 14 This is a schematic diagram of the latch plate, lock housing, and latch mechanism from another angle when the latch mechanism is in the closed position.

[0046] Figure 15 This is a schematic diagram of the lock body when the locking element has just switched to the unlocked state;

[0047] Figure 16 It is the rack that is pulled by Figure 15 A diagram showing the position after the locked position has been moved to the released position;

[0048] Figure 17 This is a schematic diagram of the main locking bolt mechanism;

[0049] Figure 18 This is an exploded view of the main locking bolt mechanism;

[0050] Figure 19 This is a diagram illustrating how the key moves the lock cylinder's latch to the unlocked position.

[0051] Figure 20 This is a schematic diagram of the lock cylinder;

[0052] Figure 21 This is a schematic diagram of the lock body in Embodiment 2;

[0053] Figure 22 This is a schematic diagram of the lock body and strike plate in Example 2.

[0054] Figure 23 This is an exploded view of the tongue body, tongue attachment, rotating sleeve, and second elastic element in Embodiment 2.

[0055] The labels for the attached figures are as follows:

[0056] 1. Buckle plate; 11. Limiting hole; 12. Protrusion; 2. Lock housing; 21. Clearance groove; 211. Second guide surface; 3. Lug mechanism; 31. Lug body; 311. Lug part; 3111. Pressure-retracting surface; 3112. Thrust surface; 31121. Slide groove; 312. Rod part; 3121. Limiting part; 32. First elastic element; 33. Rotating sleeve; 331. Drive part; 332. Notch; 333. Guide groove; 3331. Guide part; 3332. First part; 3333. Second part; 34. Lug accessory; 341. Small tongue part; 3411. Protrusion; 34111. First guide surface; 342. Mounting part; 3421. Guide block; 35. Second elastic element; 4. Main latch mechanism; 4 1. Main bolt body; 411. Main bolt portion; 412. Main bolt plate; 4121. Drive groove; 42. Main bolt actuating block; 421. Drive block; 43. First rotation axis; 44. Pull rack; 441. Locking part; 45. Main bolt ejection elastic element; 46. Transmission component; 461. Tooth; 47. Rotating lever; 471. First mating part; 472. Third mating part; 48. Lock cylinder; 481. Lock head cam; 49. Lock head lever; 491. Pressurized part; 492. Second mating part; 493. Fourth mating part; 494. Unlocking part; 5. Locking element; 51. Clearance opening; 6. Reset elastic element; 71. Handle shaft; 72. Handle lever; 721. Fifth mating part; 722. Sixth mating part. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] The present invention will now be described in detail with reference to the accompanying drawings.

[0061] Example 1

[0062] like Figures 1-20 As shown, this embodiment discloses a lock body for cooperating with a strike plate 1 installed on a door frame.

[0063] like Figure 8 As shown, the lock body includes a lock housing 2, a latch mechanism 3, a main latch mechanism 4, and a locking element 5 movably mounted on the lock housing 2. The locking element 5 is used to lock or unlock the main latch mechanism 4.

[0064] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the oblique tongue mechanism 3 includes:

[0065] The latch body 31 is slidably disposed in the lock housing 2. The latch body 31 has a latch portion 311 and a rod portion 312 that are connected to each other.

[0066] The first elastic element 32 is provided in the lock housing 2 and is used to directly or indirectly cooperate with the latch body 31 to make the latch body 31 have a tendency to move outward of the lock housing 2.

[0067] Rotating sleeve 33 is rotatably mounted on the tongue portion 311 and / or the rod portion 312. Rotating sleeve 33 can rotate around the axis of the rod portion 312. When the tongue body 31 slides, it can drive the rotating sleeve 33 to slide synchronously axially. Rotating sleeve 33 has a driving part 331, which is used to cooperate with the locking element 5.

[0068] The latch attachment 34 has a small tongue 341 and a mounting part 342 connected to each other. The mounting part 342 is slidably mounted on the latch body 31. When the latch body 31 slides into the lock housing 2, it can drive the latch attachment 34 to move into the lock housing 2 together. A guide structure is provided between the mounting part 342 and the rotating sleeve 33. The guide structure includes a guide groove 333 and a guide block 3421 extending into the guide groove 333. One of the guide groove 333 and the guide block 3421 is provided on the latch attachment 34, and the other is provided on the rotating sleeve 33. The guide structure is used to make the rotating sleeve 33 rotate relative to the latch attachment 34 when the rotating sleeve 33 moves axially relative to the latch attachment 34, thereby changing the position of the drive part 331; and

[0069] The second elastic element 35, which directly or indirectly cooperates with the oblique tongue attachment 34, is used to give the oblique tongue attachment 34 a tendency to move outward of the lock case 2.

[0070] The oblique tongue mechanism 3 has an open state, a closed but not fully closed state, and a fully closed state; the locking element 5 has a locked state and an unlocked state.

[0071] When the oblique tongue mechanism 3 is in the open state, see Figure 1 The oblique tongue part 311 of the oblique tongue body 31 extends out of the lock housing 2, the small tongue part 341 of the oblique tongue accessory 34 extends out of the lock housing 2, the locking element 5 is in a locked state, and the driving part 331 is offset from the locking element 5.

[0072] When the oblique latch mechanism 3 is in the closed-not-fully-positioned state, see Figure 8 and Figure 9 The tongue portion 311 of the tongue body 31 is pressed and moves into the lock housing 2 and retracts. The tongue attachment 34 also moves into the lock housing 2 and retracts under the action of the tongue body 31.

[0073] When the oblique tongue mechanism 3 is in the closed position, see Figures 11-14 The small tongue 341 of the latch attachment 34 abuts against the buckle plate 1. The latch body 31 slides out of the lock shell 2 under the action of the first elastic member 32. When the latch body 31 slides, it will drive the rotating sleeve 33 to move synchronously. When the rotating sleeve 33 moves relative to the mounting part 342, under the action of the mutually cooperating guide groove 333 and guide block 3421, the rotating sleeve 33 rotates, changing the position of the drive part 331. When the drive part 331 moves along the axial direction of the latch body 31 after changing its position, it will contact the locking element 5, causing the locking element 5 to switch from the locked state to the unlocked state.

[0074] The oblique tongue attachment 34 of this application is slidably disposed on the oblique tongue body 31. Compared with the prior art structure in which the trigger tongue assembly and the oblique tongue assembly are arranged side by side, the structure can be made more compact. The present application can realize the rotation of the rotating sleeve 33 through the guide block 3421, so that after the door is closed, the drive part 331 can contact the locking element 5, so that the locking element 5 switches from the locked state to the unlocked state.

[0075] In practical applications, the locking element 5 can be rotatably installed inside the lock housing 2, or it can be slidably installed inside the lock housing 2. In this embodiment, it is a rotatable fit.

[0076] like Figure 1 The lock body also has a reset elastic element 6 for resetting the locking element 5.

[0077] In this embodiment, the mounting part 342 is slidably mounted on the rod part 312. When the latch mechanism 3 is in the open state, the mounting part 342 abuts against the latch part 311. There are various ways to slide the mounting part 342, such as by sleeve or by using a track.

[0078] like Figure 1 and Figure 6 As shown, the locking element 5 has a clearance opening 51 on one side. When the latch mechanism 3 is in the open state, the drive unit 331 passes through the clearance opening 51. The clearance opening 51 mentioned in this application can be on the locking element 5 or in the external space on one side of the locking element 5.

[0079] like Figures 3 to 6 As shown, in this embodiment, the oblique tongue 311 has a pressure-retracting surface 3111 and a thrust surface 3112. The pressure-retracting surface 3111 is an inclined surface or an arc-shaped surface, and the thrust surface 3112 has a groove 31121. The small tongue 341 slides in conjunction with the groove 31121.

[0080] like Figures 3 to 6 As shown, in this embodiment, the oblique tongue 311 has a pressure-retracting surface 3111 and a thrust surface 3112. The pressure-retracting surface 3111 is an inclined surface or an arc-shaped surface, and the thrust surface 3112 has a groove 31121. The small tongue 341 slides in conjunction with the groove 31121.

[0081] The buckle plate 1 has a limiting hole 11 for the oblique tongue body 31 to be inserted into, and the buckle plate 1 also has a protrusion 12 that extends into the limiting hole 11; the small tongue 341 is fully embedded in the sliding groove 31121. When the oblique tongue mechanism 3 is in the closed position, the oblique tongue body 31 extends into the limiting hole 11 and the small tongue 341 contacts and cooperates with the protrusion 12.

[0082] The small tongue 341 is fully embedded in the slide groove 31121, meaning that the small tongue 341 does not protrude from the slide groove 31121. This setting does not change the thickness of the lock body, that is, the thickness of the lock body will not need to be increased because the small tongue 341 protrudes from the slide groove 31121.

[0083] like Figure 4 and Figure 5 As shown, in this embodiment, the guide groove 333 includes at least a guide portion 3331 that is not parallel to the axis of the rod portion 312. During the period from the closed-not-closed state to the closed-in state, the guide block 3421 moves at least a distance in the guide portion 3331.

[0084] like Figure 4 and Figure 5 As shown, in this embodiment, the guide groove 333 further includes a first part 3332 and a second part 3333, and the first part 3332, the guide part 3331 and the second part 3333 are connected in sequence;

[0085] When the oblique tongue mechanism 3 is in the open state and the closed state, the guide block 3421 is located at the junction of the first part 3332 or the guide part 3331.

[0086] When the oblique tongue mechanism 3 is in the closed position, the guide block 3421 is located at the junction of the second part 3333 or the guide part 3331.

[0087] like Figures 3 to 6 As shown, in this embodiment, the guide groove 333 is disposed on the rotating sleeve 33, and the guide block 3421 is disposed on the mounting part 342;

[0088] The rotating sleeve 33 also has a notch 332;

[0089] The mounting part 342 is mounted on the outside of the rod part 312, the rotating sleeve 33 is sleeved on the outside of the mounting part 342, and the small tongue part 341 protrudes through the notch 332;

[0090] The second elastic element 35 is a spring. The second elastic element 35 is sleeved on the rod portion 312. One end of the second elastic element 35 is engaged with the mounting portion 342, and the other end is engaged with the rotating sleeve 33 or the rod portion 312.

[0091] like Figure 4 and Figure 6 As shown, in this embodiment, the outer wall of the rod 312 has a limiting part 3121, and the rotating sleeve 33 is sleeved on the rod 312 and located between the oblique tongue 311 and the limiting part 3121. In actual use, the limiting part 3121 can be an integral structure with the rod 312, or it can be a retaining spring installed on the rod 312.

[0092] In practical applications, the first elastic element 32 is a spring, tension spring or torsion spring. One end of the first elastic element 32 is engaged with the lock housing 2, and the other end is engaged directly or indirectly with the rod 312.

[0093] like Figures 15-20 As shown, the main bolt mechanism 4 of the lock body includes:

[0094] The main bolt body 41 is slidably disposed on the lock housing 2. The main bolt body 41 has a main bolt portion 411 and a main bolt plate 412 connected to each other. The main bolt plate 412 has a drive groove 4121. The main bolt body 41 has an extended state and a retracted state.

[0095] The main latch actuating block 42 is rotatably mounted on the lock housing 2. The main latch actuating block 42 can rotate around the first rotation axis 43. The main latch actuating block 42 has a driving block 421 that extends into the driving groove 4121. When the main latch actuating block 42 rotates, it can drive the main latch body 41 to slide through the cooperation of the driving block 421 and the driving groove 4121. The main latch actuating block 42 has a first position and a second position. When the main latch actuating block 42 is in the first position, the main latch body 41 is in the extended state. When the main latch actuating block 42 is in the second position, the main latch body 41 is in the retracted state.

[0096] The pull rack 44 is slidably mounted on the lock housing 2. The pull rack 44 is used to directly or indirectly engage with the main lock tongue actuating block 42. When the pull rack 44 slides, it can drive the main lock tongue actuating block 42 to rotate. The pull rack 44 has a locked position and a released position. When the pull rack 44 is in the locked position, the main lock tongue actuating block 42 is in the second position. When the pull rack 44 is in the released position, the main lock tongue actuating block 42 is in the first position. The pull rack 44 has a locking part 441, which is used to cooperate with the locking element 5. When the locking element 5 locks the locking part 441, the pull rack 44 cannot slide and is in the locked position. When the locking element 5 does not lock the locking part 441, the pull rack 44 can slide to the released position after being subjected to force.

[0097] The main latch ejector elastic element 45 is installed inside the lock housing 2 and cooperates with the pull rack 44 to drive the pull rack 44 to slide to the release position when the locking element 5 is not locking the locking part 441.

[0098] In actual use, after the door is closed and the locking element 5 is unlocked, the main latch ejector elastic element 45 drives the rack 44 to move, so that the main latch body 41 automatically pops out and switches to the extended state.

[0099] like Figure 17 and Figure 18As shown, in this embodiment, the main latch mechanism 4 further includes a transmission member 46 rotatably mounted on the lock housing 2. The rotatable member is fixed relative to the main latch actuating block 42, and the rotatable member and the main latch actuating block 42 can rotate synchronously. The transmission member 46 has teeth 461, which pull the rack 44 to mesh with the teeth 461. In practical applications, the transmission member 46 may not be provided. In this case, the main latch actuating block 42 has teeth 461, which pulls the rack 44 to mesh with the teeth 461.

[0100] like Figures 15 to 20 As shown, the main locking bolt mechanism 4 also includes:

[0101] Rotating lever 47 is rotatably mounted on the lock housing 2 and fixed relative to the main lock tongue actuating block 42. It can rotate synchronously with the main lock tongue actuating block 42. Rotating lever 47 has a first mating part 471 provided adjacent to the first rotation axis 43.

[0102] Lock cylinder 48, see Figure 20 Installed on the lock housing 2, the lock cylinder 48 has a lock head cam 481, which has an initial position and an unlocked position;

[0103] A lock cylinder lever 49 is movably mounted on the lock housing 2. The lock cylinder lever 49 has a pressure-receiving portion 491 and a second mating portion 492. The pressure-receiving portion 491 is located on one side of the lock cylinder 48 and adjacent to the lock cylinder cam 481; and

[0104] During the process of the lock head cam 481 rotating from the initial position to the unlock position, the lock head cam 481 contacts and engages with the pressure part 491, driving the lock head lever 49 to move. After the lock head lever 49 moves, the second engagement part 492 contacts and engages with the first engagement part 471, driving the rotating lever 47 and the main lock tongue actuating block 42 to rotate synchronously, so that the main lock tongue body 41 switches from the extended state to the retracted state. At the same time, the main lock tongue actuating block 42 drives the rack 44 to slide to the locking position and lock it with the locking element 5.

[0105] In this application, the main bolt mechanism 4 has a pressure-bearing part 491 located on one side of the lock cylinder 48 and adjacent to the lock head cam 481. The lock head cam 481 can drive the lock head lever 49 to move by rotating a small angle. The first mating part 471 of the main bolt actuating block 42 is located near the first rotation axis 43. In this way, the first mating part 471 only needs to move a small range to achieve a large rotation angle of the main bolt actuating block 42. The combination of the two ("the pressure-bearing part 491 is located on one side of the lock cylinder 48 and adjacent to the lock head cam 481" and "the first mating part 471 is located near the first rotation axis 43") enables the main bolt mechanism 4 to rotate a small angle when unlocked with a key, and the unlocking process takes a short time.

[0106] In this embodiment, when the lock cam 481 rotates from the initial position to the unlocked position, the angle of rotation of the lock cam 481 is less than or equal to 90°.

[0107] like Figure 17 and 18 As shown, in this embodiment, the main latch plate 412 is located between the main latch actuating block 42 and the rotating paddle 47;

[0108] The drive block 421 is mounted on the drive slot 4121;

[0109] One end of the drive block 421 is fixed to the main latch actuating block 42, and the other end is inserted into the rotating paddle 47; or, one end of the drive block 421 is fixed to the rotating paddle 47, and the other end is inserted into the main latch actuating block 42.

[0110] This design ensures even force distribution on the main locking tongue plate 412, resulting in greater stability and reliability during operation.

[0111] In this embodiment, the rotating paddle 47 also has a third mating part 472. The third mating part 472 and the first mating part 471 are both located on the same side of the first rotation axis 43, and the distance of the third mating part 472 from the first rotation axis 43 is greater than the distance of the first mating part 471 from the first rotation axis 43.

[0112] The lock lever 49 has a fourth mating part 493 that mates with the third mating part 472;

[0113] During the process of the lock head cam 481 rotating from the initial position to the unlock position, the lock head cam 481 contacts and engages with the pressure part 491, driving the lock head lever 49 to move. At first, the fourth engagement part 493 of the lock head lever 49 contacts and engages with the third engagement part 472, driving the rotating lever 47 to rotate. Then, the fourth engagement part 493 and the third engagement part 472 no longer contact and engage, but the second engagement part 492 contacts and engages with the first engagement part 471, continuing to drive the rotating lever 47 to rotate, causing the main lock tongue body 41 to switch from the extended state to the retracted state. At the same time, the main lock tongue actuating block 42 drives the rack 44 to slide to the locking position and lock it with the locking element 5.

[0114] The first mating part 471 is located near the first rotation axis 43, which results in a small lever arm. At the beginning of rotation, a large force needs to be applied to the key. This application solves this problem by setting a third mating part 472 (the distance between the third mating part 472 and the first rotation axis 43 is greater than the distance between the first mating part 471 and the first rotation axis 43) and a fourth mating part 493. At the beginning of unlocking, the third mating part 472 and the fourth mating part 493 drive the rotating lever 47 to rotate. Compared with the initial engagement with the first mating part 471, the lever arm is increased, which can drive the rotating lever 47 to rotate better. Then, the fourth mating part 493 no longer engages with the third mating part 472. Instead, the second mating part 492 engages with the first mating part 471 to continue driving the rotating lever 47 to rotate, and finally the main lock tongue body 41 switches from the extended state to the retracted state.

[0115] like Figure 16 As shown, in this embodiment, the first mating part 471 and the third mating part 472 are located on both sides of the lock head lever 49.

[0116] In this embodiment, the lock head lever 49 is slidably disposed on the lock housing 2; the main bolt ejection elastic element 45 is a spring, torsion spring or tension spring.

[0117] The tongue mechanism 3 in this embodiment has an extended state and a retracted state; such as Figure 15 , Figure 16 and Figure 19 As shown, the lock body also includes:

[0118] Handle shaft 71, rotatably mounted on lock housing 2, is used to mount the handle; and

[0119] The handle lever 72 is mounted on the handle shaft 71 and can rotate relative to the handle shaft 71. The handle lever 72 has a fifth mating part 721 and a sixth mating part 722. The fifth mating part 721 is mated with the rod part 312 of the tongue mechanism 3 and is used to switch the tongue mechanism 3 from the extended state to the retracted state.

[0120] The lock cylinder lever 49 also has an unlocking part 494. During the process of the lock cylinder cam 481 rotating from the initial position to the unlocking position, the lock cylinder cam 481 contacts and engages with the second pressure part 491, driving the lock cylinder lever 49 to move. After the lock cylinder lever 49 moves, the main bolt body 41 switches from the extended state to the retracted state. At the same time, the main bolt actuating block 42 drives the rack 44 to slide to the locking position and lock it with the locking element 5. Meanwhile, the unlocking part 494 abuts against the sixth engaging part 722, causing the handle lever 72 to rotate. Finally, the fifth engaging part 721 of the handle lever 72 causes the latch mechanism 3 to switch from the extended state to the retracted state.

[0121] Example 2

[0122] like Figures 21-23 As shown, the difference between this embodiment and Embodiment 1 is that:

[0123] The end of the small tongue 341 away from the mounting part 342 has a protruding block 3411 with a protruding groove 31121. The lock housing 2 has a relief groove 21 for the protruding block 3411 to be inserted. When the latch mechanism 3 is in the closed position, the protruding block 3411 abuts against the buckle plate 1, and at least part of the protruding block 3411 is inserted into the relief groove 21.

[0124] The small tongue 341 has a portion that protrudes from the slide groove 31121. This arrangement does not change the buckle plate 1 (the buckle plate 1 comes in various styles, and not changing the buckle plate 1 can effectively reduce the installation efficiency and cost of the lock body). When the latch mechanism 3 is in the open state, the latch body 31 extends into the limiting hole 11 of the buckle plate 1, and because the small tongue 341 has a portion that protrudes from the slide groove 31121, this protruding portion can continue to contact the buckle plate 1, so that the latch attachment 34 is in the retracted state.

[0125] The small tongue 341 is designed in this way, which, compared to other structural forms, does not increase the thickness of the lock body, and does not require special design for the strike plate 1.

[0126] like Figure 21 and Figure 23 As shown, in this embodiment, the protrusion 3411 has an inclined or arc-shaped first guide surface 34111 on the side near the mounting part 342. The further away the protrusion 3411 is from the slide groove 31121, the smaller the thickness of the protrusion 3411. The clearance groove 21 has a second guide surface 211 that is adapted to the guide surface.

[0127] The cooperation between the first guide surface 34111 and the second guide surface 211 will not affect the insertion of the protruding block 3411 into the clearance groove 21 when the latch mechanism 3 is in the closed position. However, it can reduce the amount of material that needs to be removed from the lock shell 2 due to the clearance groove 21, thus ensuring the structural strength of the lock body. That is, if the first guide surface 34111 and the second guide surface 211 are not provided, the protruding block 3411 will be a block of a certain thickness. In this case, a larger clearance groove 21 would be required, which would remove more material and affect the structural strength.

[0128] The above description is only a preferred embodiment of the present utility model and does not limit the scope of patent protection of the present utility model. Any equivalent structural transformations made based on the content of the present utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present utility model.

Claims

1. A main bolt mechanism for a lock body, the lock body comprising a lock housing and a locking element movably mounted on the lock housing, characterized in that, The main bolt mechanism of the lock body includes: The main bolt body is slidably mounted on the lock housing. The main bolt body has a main bolt portion and a main bolt plate that are connected to each other. The main bolt plate has a drive groove. The main bolt body has an extended state and a retracted state. The main latch actuating block is rotatably mounted on the lock housing. The main latch actuating block can rotate around a first rotation axis. The main latch actuating block has a driving block that extends into the driving groove. When the main latch actuating block rotates, it can drive the main latch body to slide through the cooperation of the driving block and the driving groove. The main latch actuating block has a first position and a second position. When the main latch actuating block is in the first position, the main latch body is in an extended state. When the main latch actuating block is in the second position, the main latch body is in a retracted state. A pull rack is slidably mounted on the lock housing. The pull rack is used to directly or indirectly engage with the main latch actuating block. When the pull rack slides, it can drive the main latch actuating block to rotate. The pull rack has a locked position and a released position. When the pull rack is in the locked position, the main latch actuating block is in the second position. When the pull rack is in the released position, the main latch actuating block is in the first position. The pull rack has a locking part, which is used to cooperate with the locking element. When the locking element locks the locking part, the pull rack cannot slide and is in the locked position. When the locking element does not lock the locking part, the pull rack can slide to the released position after being subjected to force. The main latch ejector spring is installed inside the lock housing and cooperates with the pull rack to drive the pull rack to slide to the release position when the locking element is not locking the locking part.

2. The main locking bolt mechanism of the lock body as described in claim 1, characterized in that, The main locking tongue actuating block has teeth, and the pulling rack engages with the teeth.

3. The main locking bolt mechanism of the lock body as described in claim 1, characterized in that, The main latch mechanism also includes a transmission component rotatably mounted on the lock housing. The rotatable component is fixed relative to the main latch actuating block, and the rotatable component and the main latch actuating block can rotate synchronously. The transmission component has teeth, and the pulling rack meshes with the teeth.

4. The main locking bolt mechanism of the lock body as described in claim 2 or 3, characterized in that, The main locking mechanism also includes: The rotating paddle is rotatably mounted on the lock housing and fixed relative to the main bolt actuating block. It can rotate synchronously with the main bolt actuating block. The rotating paddle has a first mating part disposed adjacent to the first rotation axis. A lock cylinder, mounted on a lock housing, has a lock head cam having an initial position and an unlocked position; A lock cylinder lever, movably mounted on the lock housing, the lock cylinder lever having a pressure-receiving portion and a second mating portion, the pressure-receiving portion being located on one side of the lock cylinder and adjacent to the lock cylinder cam; and During the process of the lock head cam rotating from the initial position to the unlock position, the lock head cam contacts and engages with the pressure part, driving the lock head lever to move. After the lock head lever moves, the second engaging part contacts and engages with the first engaging part, driving the rotating lever and the main lock tongue actuating block to rotate synchronously, so that the main lock tongue body switches from the extended state to the retracted state. At the same time, the main lock tongue actuating block drives the rack to slide to the locking position and locks it with the locking element.

5. The main locking bolt mechanism of the lock body as described in claim 4, characterized in that, When the lock cam rotates from the initial position to the unlocked position, the angle of rotation of the lock cam is less than or equal to 90°.

6. The main bolt mechanism of the lock body as described in claim 4, characterized in that, The main bolt plate is located between the main bolt actuating block and the rotating paddle. The drive block passes through the drive slot; One end of the drive block is fixed to the main locking tongue actuation block, and the other end is inserted into the rotating paddle. Alternatively, one end of the drive block is fixed to the rotating paddle, and the other end is inserted into the main locking tongue actuation block.

7. The main bolt mechanism of the lock body as described in claim 4, characterized in that, The rotating paddle also has a third mating part, which is located on the same side of the first rotating axis as the first mating part, and the distance of the third mating part from the first rotating axis is greater than the distance of the first mating part from the first rotating axis. The lock lever has a fourth mating part that mates with the third mating part; During the process of the lock head cam rotating from the initial position to the unlock position, the lock head cam contacts and engages with the pressure part, driving the lock head lever to move. Initially, the fourth engagement part of the lock head lever contacts and engages with the third engagement part, driving the lever to rotate. Then, the fourth engagement part and the third engagement part no longer contact and engage, but the second engagement part contacts and engages with the first engagement part, continuing to drive the lever to rotate, causing the main bolt body to switch from the extended state to the retracted state. At the same time, the main bolt lever block drives the rack to slide to the locking position and locks it with the locking element.

8. The main bolt mechanism of the lock body as described in claim 7, characterized in that, The first mating part and the third mating part are located on both sides of the lock head lever, respectively.

9. The main bolt mechanism of the lock body as described in claim 4, characterized in that, The lock head lever is slidably mounted on the lock housing; the main bolt ejection elastic element is a spring, torsion spring, or tension spring.

10. A lock body, characterized in that, The main bolt mechanism of the lock body as described in any one of claims 1 to 9.

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