Multifunctional mortise lock

Abstract

The utility model relates to a multifunctional mortise lock. Comprising a lock shell assembly, a dead bolt assembly, a connecting rod, a shifting block assembly and an inclined bolt assembly. The dead bolt assembly comprises a dead bolt, and the dead bolt is installed in the lock shell assembly in a sliding mode relative to the lock shell assembly between the extending position and the retracting position. The dead bolt assembly further comprises a sliding block and a first reset spring, the sliding block is installed on the dead bolt in the mode of sliding relative to the dead bolt between the locking position and the unlocking position, a function groove is formed in the lock shell assembly, the sliding block is provided with a clamping strip inserted into the function groove, and the first reset spring is arranged between the dead bolt and the sliding block to drive the sliding block to return to the locking position. According to the utility model, the purposes of simultaneously unlocking the dead bolt and the inclined bolt by the handle and locking the dead bolt by the handle can be realized, so that the use of a user is facilitated.

Description

Technical Field

[0001] This utility model relates to a multifunctional mortise lock. Background Technology

[0002] Chinese utility model patent specification CN201225043Y discloses a multi-functional mortise lock with quick opening and closing, including a lock body, a square latch assembly, a bevel latch assembly, a rotating block, a connecting plate, a square latch return spring, a bevel latch lever, an upper lever, and a lower lever. The square latch assembly is slidably installed in the lock body. The rotating block is rotatably installed on the lever of the square latch assembly via a pin. The connecting rod is rotatably installed in the lock body via another pin. The connecting rod has a spindle-shaped hole, and the rotating block has a cylinder extending into the spindle-shaped hole. When the connecting rod rotates, the rotating block drives the square latch assembly to slide. The rotation of the connecting rod is caused by rotating the handle and using the left and right levers of the upper and lower levers to move the vertical lever of the connecting rod. With the above structure, the square latch and bevel latch can be locked and unlocked directly by the handle without inserting a key, which is convenient to use.

[0003] However, after the latch extends out of the lock body and locks, the connecting rod and rotating block are in a free state without any force, making the latch easy to pry open, and the security needs to be improved. Summary of the Invention

[0004] The purpose of this utility model is to provide a multifunctional mortise lock, including a lock housing assembly, a square latch assembly, a connecting rod, a lever assembly, and a bevel latch assembly; the middle part of the connecting rod is rotatably mounted in the lock housing assembly relative to the lock housing assembly, and the lower end of the connecting rod is provided with a drive hole; the square latch assembly includes a square latch, which is slidably mounted in the lock housing assembly relative to the lock housing assembly between an extended position and a retracted position; the bevel latch assembly is slidably mounted in the lock housing assembly between an extended position and a retracted position, and a second return spring is provided between the bevel latch assembly and the lock housing assembly to drive the bevel latch assembly back to the extended position; the lever assembly includes a bevel latch lever and a square latch lever for connecting with the handle to rotate with the handle, and the square latch lever is rotatably mounted in the lock housing. In the assembly, the square tongue lever is provided with a left lever and a right lever spaced apart in its circumferential direction. The oblique tongue lever is provided with an upper lever extending toward and into the oblique tongue assembly. The upper lever pushes the oblique tongue assembly to slide into the retracted position when the oblique tongue lever rotates clockwise. The upper end of the connecting rod is positioned between the left and right levers. When the square tongue lever rotates counterclockwise, the left lever pushes the upper end of the connecting rod to drive the connecting rod to rotate clockwise. When the square tongue lever rotates clockwise, the right lever pushes the upper end of the connecting rod to drive the connecting rod to rotate counterclockwise. The square tongue assembly also includes a slider and a first return spring. The slider is provided with a push rod extending into the drive hole. The slider is in a locked position and an unlocked position. The slider is slidably mounted on the latch. The sliding direction of the slider relative to the latch is parallel to the Y-axis, and the sliding direction of the latch relative to the lock housing assembly is parallel to the X-axis. The X-axis and Y-axis are perpendicular to each other, forming a Cartesian coordinate system. The slider is fixed relative to the latch on the X-axis. The lock housing assembly has a functional slot, which includes a main slot extending along the X-axis and a front short slot located on one side of the main slot and communicating with it. The slider has a retaining strip that inserts into the functional slot. When the latch is in the extended position, the retaining strip is aligned with the front short slot. At this time, the retaining strip can selectively enter and exit the front short slot when the slider slides. Specifically, the retaining strip enters the front short slot when the slider is in the locked position, and exits the front short slot and enters the main slot when the slider slides from the locked position to the unlocked position. The mechanism allows the latch to slide relative to the locking housing assembly when the latch is in the main slot, but restricts the sliding of the latch relative to the locking housing assembly when the latch is in the front short slot. A first return spring is located between the latch and the slider to drive the slider back to the locked position. When the connecting rod rotates counterclockwise, the wall of the drive hole pushes the push rod in the forward direction, causing the slider to perform a planar first combined motion relative to the locking housing assembly in the XY plane. This first combined motion of the slider has component motions on the X and Y axes. The component motion on the Y axis causes the slider to slide from the locked position to the unlocked position, allowing the latch to exit the front short slot. The component motion on the X axis causes the slider to drive the latch to slide from the extended position to the retracted position.When the connecting rod rotates clockwise, the wall of the drive hole pushes the push rod in the opposite direction, causing the slider to perform a second planar resultant motion relative to the lock housing assembly in the XY plane. This second resultant motion of the slider has at least a component motion on the X-axis, and this component motion on the X-axis causes the slider to slide the square latch from the retracted position to the extended position. The oblique latch block is rotatably fitted around the square latch block. The oblique latch block has a fixed stop, and the square latch block has a movable stop. When the square latch block rotates clockwise, the movable stop pushes the fixed stop, causing the square latch block to drive the oblique latch block to rotate clockwise. When the square latch block rotates counterclockwise, the movable stop moves away from the fixed stop, causing the square latch block to rotate relative to the lock housing assembly while the oblique latch block remains stationary relative to the lock housing assembly. Attached Figure Description

[0005] Figure 1 and Figure 2 Two perspective views of this utility model from different angles are shown respectively;

[0006] Figure 3 The front view of this utility model is shown;

[0007] Figure 4 and Figure 5 Two exploded perspective views of this utility model from different angles are shown respectively;

[0008] Figures 6 to 8 Three perspective views of the square tongue assembly of this utility model from different angles are shown respectively;

[0009] Figure 9 The front view of the square tongue assembly of this utility model is shown, wherein the oblique tongue unlocking lever is in the lowered position and the slider is in the locked position;

[0010] Figure 10 It shows in Figure 9 The diagram shows the sliding of the latch unlock lever to the raised position and the sliding of the slider to the unlock position.

[0011] Figure 11 The front view of the connecting rod of this utility model is shown;

[0012] Figure 12 and Figure 13 Two exploded perspective views of the square tongue assembly of this utility model from different angles are shown respectively;

[0013] Figures 14 to 16 Three perspective views of the toggle assembly of this utility model from different angles are shown respectively;

[0014] Figures 17 to 19 Three different perspective exploded views of the toggle assembly of this utility model are shown respectively.

[0015] Figure 20 A schematic diagram is shown showing the initial state in which both the oblique tongue block and the square tongue block are not rotated;

[0016] Figure 21 It shows in Figure 20 A schematic diagram showing the square tongue lever after rotating counterclockwise;

[0017] Figure 22 It shows in Figure 20 A schematic diagram showing the square tongue lever after rotating clockwise based on the above.

[0018] Figures 23 to 41 A schematic diagram illustrating the working principle of this utility model is shown, wherein: Figure 23 This is a front view of the square tongue and oblique tongue components of this utility model in the locked state; Figure 24 yes Figure 23 Rear view; Figure 25 yes Figure 24 A magnified view of part A; Figure 26 Is Figure 23 The diagram shows the handle after pressing down further. Figure 27 Is Figure 26 The rear view only shows a partial schematic diagram of the main slot; Figure 28 Is Figure 26 The diagram shows the handle after pressing down further. Figure 29 Is Figure 28 The rear view only shows a partial schematic diagram of the main slot; Figure 30 Is Figure 28 The diagram shows the handle after pressing down further. Figure 31 A schematic diagram is shown showing the slider returning to the locked position under the action of the first return spring and the locking bar entering the rear short groove; Figure 32 This is a front view of the square tongue of this utility model in the unlocked state and the oblique tongue component in the locked state. Figure 33 This is a diagram showing the lock cylinder after turning the dial clockwise with the key; Figure 34 Is Figure 33 The diagram shows the result after rotating the lock cylinder's dial clockwise. Figure 35 Is Figure 34 The diagram shows the result after rotating the lock cylinder's dial clockwise. Figure 36 Is Figure 32 The diagram shows the result after lifting the handle to rotate the square tongue block counterclockwise by a certain angle. Figure 37 Is Figure 36 The rear view only shows a partial schematic diagram of the main slot; Figure 38 Is Figure 37 The diagram shows the handle after it has been raised further. Figure 39 Is Figure 38The rear view only shows a partial schematic diagram of the main slot; Figure 40 Is Figure 38 The diagram shows the handle after it has been raised further. Figure 41 The diagram shows the block returning to the locked position under the action of the first reset spring, and the locking bar entering the front short slot.

[0019] Icon labels:

[0020] 10 Lock housing assembly, 101 Functional slot, 102 Main slot, 103 Front short slot, 104 Rear short slot, 105 Rear sidewall of the front short slot, 106 Bottom of the front short slot, 107 Front sidewall of the rear short slot, 107 Bottom of the rear short slot, 109 Fixed stop block; 20 Square tongue assembly, 201 Square tongue, 202 Slider, 203 First return spring, 204 Push rod, 205 Slide groove, 206 Locking bar, 207 Angled tongue unlocking rod; 30 Connecting rod 301 Drive hole, 302 Front contour section, 303 Rear contour section; 40 Toggle assembly, 401 Slanted tongue toggle, 402 Square tongue toggle, 403 Left toggle, 404 Right toggle, 405 Square hole, 406 Upper toggle, 407 Fixed stop, 408 Moving stop, 409 Lower toggle, 410 First torsion spring, 411 Moving stop, 412 Spring leg of the first torsion spring; 50 Slanted tongue assembly, 501 Second return spring; 60 Toggle wheel of the lock body. Detailed Implementation

[0021] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution.

[0022] like Figures 1 to 41 The multi-functional mortise lock shown includes a lock housing assembly 10, a square latch assembly 20, a connecting rod 30, a lever assembly 40, and a bevel latch assembly 50; the middle part of the connecting rod 30 is rotatably mounted in the lock housing assembly 10 relative to the lock housing assembly 10, and the lower end of the connecting rod 30 is provided with a drive hole 301; the square latch assembly 20 includes a square latch 201, which is slidably mounted in the lock housing assembly 10 relative to the lock housing assembly 10 between an extended position and a retracted position;

[0023] The latch assembly 50 is slidably mounted in the lock housing assembly 10 between the extended position and the retracted position. In this embodiment, the sliding direction of the latch assembly 50 is parallel to the sliding direction of the square latch 201. A second return spring 501 is provided between the latch assembly 50 and the lock housing assembly 10 to drive the latch assembly 50 back to the extended position. In this embodiment, one end of the second return spring 501 is connected to the lock housing assembly 10, and the other end is connected to the latch assembly 50.

[0024] The lever assembly 40 includes a beveled latch lever 401 and a square latch lever 404 for connecting with a handle (not shown) to rotate with the handle. The square latch lever 402 is rotatably mounted in the lock housing assembly 10. The square latch lever 402 has a left lever head 403 and a right lever head 404 spaced apart in its circumferential direction. In this embodiment, the square latch lever 402 has a square hole 405 through which it passes. The handle is connected to the square latch lever 402 by means of a square rod (not shown) inserted into the square hole 405, thereby causing the handle to drive the square latch lever 402 to rotate. The beveled latch lever 401 has an upper lever head 406 that extends toward the beveled latch assembly 50 and extends into the beveled latch assembly 50. When the beveled latch lever 401 rotates clockwise, the upper lever head 406 pushes the beveled latch assembly 50 to slide to the retracted position.

[0025] The upper end of the connecting rod 30 is positioned between the left dial 403 and the right dial 404;

[0026] When the left dial 403 rotates counterclockwise on the square tongue dial 402, it pushes the upper end of the connecting rod 30 to drive the connecting rod 30 to rotate clockwise; when the right dial 404 rotates clockwise on the square tongue dial 402, it pushes the upper end of the connecting rod 30 to drive the connecting rod 30 to rotate counterclockwise; the square tongue assembly 20 also includes a slider 202 and a first return spring 203, and the slider 202 is provided with a push rod 204 that extends into the drive hole 301;

[0027] The slider 202 is slidably mounted on the square tongue 201 relative to the square tongue 201 between the locked and unlocked positions, wherein, as shown... Figure 3 As shown, the sliding direction of the slider 202 relative to the square tongue 201 is parallel to the Y-axis, and the sliding direction of the square tongue 201 relative to the lock housing assembly 10 is parallel to the X-axis. The X-axis and the Y-axis are perpendicular to form a plane rectangular coordinate system, and the slider 202 is fixed relative to the square tongue 201 on the X-axis. In this embodiment, a groove 205 parallel to the Y-axis is provided on the square tongue 201, and the slider 202 slides along the groove 205.

[0028] The lock housing assembly 10 is provided with a functional slot 101, which includes a main slot 102 extending along the X-axis and a front short slot 103 located on one side of the main slot 102 and communicating with the main slot 102.

[0029] The slider 202 is provided with a retaining strip 206 that is inserted into the functional slot 101. In this embodiment, the retaining strip 206 passes through the square tongue 201 and is inserted into the functional slot 101. When the square tongue 201 is in the extended position, the retaining strip 206 is aligned with the front short slot 103. At this time, the retaining strip 206 can selectively enter and exit the front short slot 103 when the slider 202 slides. Specifically, the retaining strip 206 enters the front short slot 103 when the slider 202 is in the locked position, and the retaining strip 206 exits the front short slot 103 and enters the main slot 102 when the slider 202 slides from the locked position to the unlocked position.

[0030] Specifically, when the locking bar 206 is in the main groove 102, the square tongue is allowed to slide relative to the lock housing assembly 10, while when the locking bar 206 is in the front short groove 103, the square tongue 201 is restricted from sliding relative to the lock housing assembly 10. This ensures that when the square tongue 201 is in the extended position and the slider 202 is in the locked position, the square tongue 201 is restricted from sliding, especially from sliding towards the retracted position, thereby achieving the purpose of anti-pry and improving security.

[0031] The first return spring 203 is disposed between the square tongue 201 and the slider 202 to drive the slider 202 back to the locked position. In this embodiment, the first return spring is a torsion spring. The first return spring is installed on the square tongue. One spring leg of the first return spring abuts against the square tongue, and the other spring leg abuts against the slider, so that the slider always has the tendency to return to the locked position.

[0032] When the connecting rod 30 rotates counterclockwise, the wall of the drive hole 301 pushes the push rod 204 in the forward direction, causing the slider 202 to perform a planar first resultant motion relative to the lock housing assembly 10 in the XY plane. The first resultant motion of the slider 202 has component motions on the X-axis and Y-axis, respectively.

[0033] The first resultant motion of slider 202 is decomposed into a component motion on the Y-axis, causing slider 202 to slide from the locked position to the unlocked position, so that the locking bar 206 moves out of the front short groove; the first resultant motion of slider 202 is decomposed into a component motion on the X-axis, causing slider 202 to drive the square tongue 201 to slide from the extended position to the retracted position; the wall of the drive hole 301 pushes the push rod 204 in the opposite direction when the connecting rod 30 rotates clockwise, so as to drive slider 202 to perform a second resultant motion in the XY plane relative to the lock housing assembly 10, wherein the second resultant motion of slider 202 has at least a component motion on the X-axis, and the component motion on the X-axis causes slider 202 to drive the square tongue 201 to slide from the retracted position to the extended position;

[0034] This technical solution uses a slider to move the latch to lock and unlock the door, and can also lock the latch to improve security.

[0035] The oblique latch block 401 is rotatably fitted over the square latch block 402; the oblique latch block 401 is provided with a fixed stop part 407, and the square latch block 402 is provided with a movable stop part 408; when the square latch block 402 rotates clockwise, the movable stop part 408 pushes the fixed stop part 407 so that the square latch block 402 drives the oblique latch block 401 to rotate clockwise; when the square latch block 402 rotates counterclockwise, the movable stop part 408 moves away from the fixed stop part 407 so that the square latch block 402 rotates relative to the lock housing assembly 10 while the oblique latch block 401 remains stationary relative to the lock housing assembly 10;

[0036] in, Figure 20 The diagram shows that both the angled latch block 401 and the square latch block 402 are in their initial, non-rotating state, at which point the stationary stop 407 is in contact with the moving stop 408. For example... Figure 21 As shown, in Figure 20 Based on this, rotate the square tongue lever 402 counterclockwise, and the moving stop 408 on the square tongue lever 402 moves away from the fixed stop 407 on the oblique tongue lever 401. For example... Figure 22 As shown, in Figure 20 Based on this, the square tongue block 402 is rotated clockwise, and the moving stop part 408 on the square tongue block 402 pushes the fixed stop part 407 on the oblique tongue block 401, thereby causing the square tongue block 402 to drive the oblique tongue block 401 to rotate clockwise.

[0037] When both the latch assembly and the square latch are in the extended position, the user can use the handle (e.g., pressing down on the handle) to rotate the square latch lever clockwise. At the same time, the latch lever also rotates clockwise, and the upper lever pushes the latch assembly to slide into the retracted position, thus unlocking the latch assembly. Simultaneously, the right lever pushes the connecting rod to rotate counterclockwise. The connecting rod drives the slider and the square latch, causing the square latch to slide into the retracted position, thus unlocking the square latch. This allows the handle to unlock both the square latch and the latch simultaneously for user convenience.

[0038] When the latch assembly is in the extended position and the square latch is in the retracted position, when the user uses the handle (e.g., lift the handle) to rotate the square latch lever counterclockwise (e.g., lift the handle), the latch lever will not rotate with the square latch lever, and the latch assembly will remain in the extended position. Meanwhile, the left lever pushes the connecting rod to rotate clockwise, and the connecting rod drives the slider and the square latch, causing the square latch to slide to the extended position, thus locking the square latch. This achieves the purpose of locking the square latch on the handle for user convenience.

[0039] The square tongue assembly 20 also includes a slanted tongue unlocking lever 207, which is slidably mounted on the square tongue 201 between the raised position and the lowered position, wherein the sliding direction of the slanted tongue unlocking lever 207 relative to the square tongue 201 is parallel to the Y-axis.

[0040] The oblique tongue lever 401 is also provided with a lower lever 409 located above the oblique tongue unlocking lever 207. When the oblique tongue unlocking lever 207 slides from the lowered position to the raised position, it pushes the lower lever 409 to drive the oblique tongue lever 401 to rotate clockwise.

[0041] The lock housing assembly 10 also includes a lock cylinder dial 60, which is located below the latch unlocking lever 207. When the lock cylinder dial 60 rotates clockwise, it pushes the latch unlocking lever 207 to slide from the lowered position to the raised position.

[0042] This technical solution enables the lock cylinder's dial to rotate clockwise using a key, which in turn rotates the latch release lever clockwise, causing the latch block to slide into a retracted position. This allows for latch unlocking without rotating the handle, simplifying the user experience. In this embodiment, the lock cylinder within the lock housing assembly can be positioned 25mm from the door edge.

[0043] The latch 201 has a notch 208 for the lock cylinder's dial 60 to enter. A retaining bar 206 is located within the notch 208. When the lock cylinder's dial 60 rotates, it can selectively enter and exit the notch 208. When the dial 60 enters the notch 208, it pushes the retaining bar 206, causing the slider to slide from the locked position to the unlocked position. This technical solution is reasonably designed to allow the latch to be opened or locked by rotating the lock cylinder's dial with a key.

[0044] The functional slot 101 also includes a rear short slot 104 that communicates with the main slot 102. The front short slot 103 and the rear short slot 104 are located on the same side of the main slot 102 and slide along the direction of the square tongue 201 from the retracted position to the extended position. The front short slot 103 is located in front of the rear short slot 104.

[0045] When the square tongue 201 is in the retracted position, the locking bar 206 is aligned with the rear short groove 104. At this time, the locking bar 206 can selectively enter and exit the rear short groove 104 when the slider 202 slides. Specifically, the locking bar 206 enters the rear short groove 104 when the slider 202 is in the locked position, and the locking bar 206 exits the rear short groove 104 and enters the main groove 102 when the slider 202 slides from the locked position to the unlocked position.

[0046] When the locking bar 206 is in the rear short groove 104, the sliding of the square tongue 201 relative to the locking housing assembly 10 is limited, thereby keeping the square tongue 201 in a relatively stable state when it is in the retracted position and preventing it from falling off.

[0047] The second resultant motion of the slider 202 also has a component motion on the Y-axis, and the component motion on the Y-axis causes the slider 202 to slide from the locked position to the unlocked position, so that the card bar 206 can exit the rear short groove 104.

[0048] The functional slot 101 is concave.

[0049] The rear sidewall 105 of the front short groove 103, which is close to the rear short groove 104, extends obliquely upward from the bottom 106 of the front short groove toward the rear short groove 104, so that when the slider makes its first closing motion, it can walk out of the front short groove along the rear sidewall of the front short groove. The rear sidewall of the front short groove is set to be inclined so as to limit the slider (i.e., the square tongue) to slide only in one direction parallel to the X-axis.

[0050] The rear short groove 105 extends obliquely upward from the bottom 108 of the rear short groove towards the front short groove 103 via the front groove sidewall 107 near the front short groove 103, so that when the slider makes its second combined motion, it can walk out of the rear short groove along the front groove sidewall of the rear short groove. The front groove sidewall of the rear short groove is set to be inclined so as to limit the slider (i.e., the square tongue) to slide only in one direction parallel to the X-axis.

[0051] The drive hole 301 includes a front profile section 302 for pushing the push rod 204 when the connecting rod 30 rotates counterclockwise and a rear profile section 303 for pushing the push rod 204 when the connecting rod 30 rotates clockwise.

[0052] The front contour segment 302 and the rear contour segment 303 are curved surfaces or inclined surfaces, so that the slider 202 can move in a resultant motion in the XY plane when it slides. In this embodiment, Figure 11 As shown, the front contour segment 302 is a curved surface, while the rear contour segment 303 is an inclined surface. In this embodiment, the driving hole 301 is an irregularly shaped hole.

[0053] The lever assembly 40 also includes a first torsion spring 410 for driving the square tongue lever 402 to rotate and then reset; the lock housing assembly 10 is provided with a fixed stop block 109, and the square tongue lever 402 is provided with a movable stop block 411; the first torsion spring 410 is sleeved on the square tongue lever 402, and the fixed stop block 109 and the movable stop block 411 are simultaneously clamped between the two spring legs 412 of the first torsion spring, so that the square tongue lever 402 can be subjected to the elastic force of the first torsion spring 410 when rotating in a clockwise or counterclockwise direction. In addition, the simultaneous clamping of the fixed stop block and the movable stop block by the two spring legs of the first torsion spring can make the rotation of the square tongue lever more stable, and can accurately reset after rotation, avoiding loosening.

[0054] The working principle of this utility model can be found as follows:

[0055] 1. Open the square latch and angled latch components simultaneously using the handle.

[0056] like Figure 23 The image shown is a front view of the present invention with both the square latch and the oblique latch components in the locked state. The oblique latch component is in the extended position, and the square latch is in the extended position. Figure 24 yes Figure 23Rear view;

[0057] like Figure 26 As shown, pressing down the handle causes the square tongue block to rotate clockwise, and the right dial pushes the upper end of the connecting rod to rotate the connecting rod counterclockwise. The connecting rod, through the front contour section of the drive hole at its lower end, pushes the push rod in the forward direction, causing the slider to perform the first closing motion. The slider 202 slides from the locked position to the unlocked position, as shown. Figure 27 As shown, the locking bar 206 slides along the rear groove sidewall 105 of the front short groove and gradually exits the front short groove, while the square tongue 201 slides from the extended position to the retracted position. Furthermore, as the square tongue lever rotates clockwise, the moving stop pushes the fixed stop, causing the oblique tongue lever to also rotate clockwise. The upper lever of the oblique tongue lever pushes the oblique tongue assembly to slide from the extended position to the retracted position.

[0058] like Figure 28 As shown, continuing to press down the handle causes the square tongue to rotate clockwise, the slider 202 continues its first closing motion, the square tongue 201 continues to slide towards the retracted position, and the oblique tongue assembly continues to slide towards the retracted position, as shown. Figure 29 As shown, the card strip 206 has completely exited the front short groove.

[0059] like Figure 30 As shown, continue pressing down the handle to drive the square tongue toggle block to continue rotating clockwise. The slider 202 reaches the unlock position, the square tongue reaches the retracted position, and the oblique tongue assembly reaches the retracted position.

[0060] This allows the handle to simultaneously unlock both the square tongue and the oblique tongue components.

[0061] Afterwards, upon releasing the handle, the slider returns to the locked position under the action of the first return spring, and the locking strip 206 enters the rear short groove (e.g. Figure 31 As shown, the square tongue block is reset under the action of the first torsion spring, and the oblique tongue assembly and oblique tongue block are reset under the action of the second reset spring.

[0062] 2. Open the latch assembly with the key.

[0063] like Figure 32 The image shown is a front view of the present invention with the square latch in the unlocked state and the oblique latch assembly in the locked state. The dial 60 of the lock head is in the initial state, and the oblique latch unlocking lever 207 is in the lowered position.

[0064] like Figure 33 As shown, by turning the key clockwise, the dial 60 of the lock head contacts the lower end of the latch unlocking lever 207.

[0065] like Figure 34As shown, the lock cylinder's dial 60 continues to rotate clockwise to push the latch unlocking lever 207 from the lowered position to the raised position, causing it to slide upwards. During this upward movement, the latch unlocking lever 207 pushes the lower lever 409 of the latch block, causing it to rotate clockwise. Simultaneously, the upper lever of the latch block pushes the latch assembly from the extended position to the retracted position. As the latch block rotates clockwise under the influence of the latch unlocking lever 207, the latch block remains stationary because the stationary stop moves away from the moving stop.

[0066] like Figure 35 As shown, continue to rotate the lock cylinder dial 60 clockwise, the latch unlock lever 207 reaches the raised position, and the latch assembly reaches the retracted position, thereby enabling the key to open the latch assembly.

[0067] 3. Locking tongue via handle

[0068] Figure 36 Is Figure 32 The diagram illustrates the effect of lifting the handle to rotate the square tongue block counterclockwise by a certain angle. During this counterclockwise rotation, the left dial pushes the upper end of the connecting rod, causing it to rotate clockwise. The connecting rod, through the rear contour section of its lower drive hole, pushes the push rod in the opposite direction, causing the slider to perform a second closing motion. The slider 202 slides from the locked position to the unlocked position. Figure 37 As shown, the locking bar 206 slides along the side wall of the front groove of the rear short groove and gradually moves out of the rear short groove, while the square tongue 201 slides from the retracted position to the extended position. During the counterclockwise rotation of the square tongue block, the oblique tongue block remains stationary because the moving stop moves away from the fixed stop.

[0069] like Figure 38 As shown, continuing to lift the handle causes the square tongue block to continue rotating counterclockwise, and the slider 202 continues to perform the second combined motion, as... Figure 39 As shown, the card strip 206 has completely exited the short groove, and the square tongue 201 continues to slide towards the extended position.

[0070] like Figure 40 As shown, continue to lift the handle to drive the square tongue to rotate counterclockwise until the square tongue reaches the extended position.

[0071] This allows the locking mechanism to be engaged.

[0072] Afterwards, upon releasing the handle, the slider returns to the locked position under the action of the first return spring, and the locking strip 206 enters the front short groove (as shown). Figure 41 (As shown).

[0073] 4. Lock the latch with the key.

[0074] When the latch is in the retracted position and the slider is in the locked position, the process of locking the latch with a key utilizes... Figure 32 To explain, in Figure 32 Based on the above, by turning the key counterclockwise on the lock cylinder's dial 60, when the dial 60 enters the notch 208 and touches the slider's locking strip 206, it will push the slider upward, causing it to slide from the locked position to the unlocked position. The locking strip will then exit the rear short groove. After that, by continuing to turn the lock cylinder's dial 60 counterclockwise, the dial 60 will push the latch forward, causing it to slide from the retracted position to the extended position, thus locking the latch with the key.

[0075] 5. Open the latch with the key

[0076] When the latch is in the extended position and the slider is in the locked position, the process of opening the latch with a key is aided by... Figure 23 To explain, in Figure 23 Based on the above, by turning the lock cylinder dial 60 clockwise with the key, when the lock cylinder dial 60 enters the notch 208 and touches the slider's retaining bar 206, it will push the slider upward, causing the slider to slide from the locked position to the unlocked position. The retaining bar will then exit the front short groove. After that, by continuing to turn the lock cylinder dial 60 clockwise, the lock cylinder dial 60 will push the latch backward, causing the latch to slide from the extended position to the retracted position, thus enabling the key to open the latch.

Claims

1. A multi-functional mortise lock, comprising a lock housing assembly, a square bolt assembly, a connecting rod, a lever assembly, and a bevel bolt assembly; The middle part of the connecting rod is rotatably mounted in the lock housing assembly relative to the lock housing assembly, and the lower end of the connecting rod is provided with a drive hole; The latch assembly includes a latch that is slidably mounted in the lock housing assembly relative to the lock housing assembly between an extended position and a retracted position; The latch assembly is slidably mounted in the lock housing assembly between an extended position and a retracted position; The latch assembly includes a bevel latch and a square latch for connecting to the handle to rotate with the handle. The square latch is rotatably mounted in the lock housing assembly. The square latch has a left and a right latch spaced apart in its circumferential direction. The bevel latch has an upper latch extending toward and into the bevel latch assembly. The upper latch pushes the bevel latch assembly to slide into a retracted position when the bevel latch is rotated clockwise. The upper end of the connecting rod is positioned between the left and right dials; When the left dial rotates counterclockwise, it pushes the upper end of the connecting rod, causing the connecting rod to rotate clockwise. When the right dial rotates clockwise, it pushes the upper end of the connecting rod, causing the connecting rod to rotate counterclockwise. Its features are: The square tongue assembly also includes a slider and a first return spring, the slider having a push rod that extends into the drive hole; The slider is slidably mounted on the square tongue between the locked and unlocked positions. The sliding direction of the slider relative to the square tongue is parallel to the Y-axis, and the sliding direction of the square tongue relative to the lock housing assembly is parallel to the X-axis. The X-axis and Y-axis are perpendicular to each other and form a Cartesian coordinate system. The slider is fixed relative to the square tongue on the X-axis. The lock housing assembly is provided with a functional slot, which includes a main slot extending along the X-axis and a front short slot located on one side of the main slot and communicating with the main slot. The slider is equipped with a retaining strip that inserts into the function slot. When the square tongue is in the extended position, the retaining strip is aligned with the front short slot. At this time, the retaining strip can selectively enter and exit the front short slot when the slider slides. Specifically, the retaining strip enters the front short slot when the slider is in the locked position, and exits the front short slot and enters the main slot when the slider slides from the locked position to the unlocked position. Specifically, when the locking bar is in the main slot, the square tongue is allowed to slide relative to the lock housing assembly, while when the locking bar is in the front short slot, the square tongue is restricted from sliding relative to the lock housing assembly. The first return spring is located between the square tongue and the slider to drive the slider back to the locked position; When the connecting rod rotates counterclockwise, the wall of the drive hole pushes the push rod in the forward direction, causing the slider to perform a planar first resultant motion relative to the lock housing assembly in the XY plane. The slider's first resultant motion has component motions on the X and Y axes, respectively. The decomposition of the first resultant motion of the slider into the component motion on the Y-axis causes the slider to slide from the locked position to the unlocked position, so that the locking bar can move out of the front short groove; The first resultant motion of the slider is decomposed into a component motion on the X-axis, which causes the slider to drive the square tongue to slide from the extended position to the retracted position. The wall of the drive hole pushes the push rod in the opposite direction when the connecting rod rotates clockwise, so as to drive the slider to make a second planar resultant motion relative to the lock housing assembly in the XY plane. The second resultant motion of the slider has at least a component motion on the X axis, and the component motion on the X axis causes the slider to drive the square tongue to slide from the retracted position to the extended position. The oblique tongue lever can be rotatably fitted onto the square tongue lever; The oblique tongue lever is provided with a fixed stop part, and the square tongue lever is provided with a movable stop part; When the movable stop part rotates clockwise, it pushes the fixed stop part so that the square tongue block drives the oblique tongue block to rotate clockwise; When the moving stop moves counterclockwise, the square latch block moves away from the fixed stop, causing the square latch block to rotate relative to the lock housing assembly while the oblique latch block remains stationary relative to the lock housing assembly.

2. A multi-functional mortise lock according to claim 1, characterized in that: The square tongue assembly also includes a slanted tongue unlocking lever, which is slidably mounted on the square tongue between the raised position and the lowered position, wherein the sliding direction of the slanted tongue unlocking lever relative to the square tongue is parallel to the Y-axis; The oblique tongue lever is also provided with a lower lever located above the oblique tongue unlocking lever. When the oblique tongue unlocking lever slides from the lowered position to the raised position, it pushes the lower lever to drive the oblique tongue lever to rotate clockwise. The lock housing assembly also includes a lock cylinder dial located below the latch release lever. When the lock cylinder dial rotates clockwise, it pushes the latch release lever from the lowered position to the raised position.

3. A multi-functional mortise lock according to claim 1, characterized in that: The functional slot also includes a rear short slot that communicates with the main slot. The front short slot and the rear short slot are located on the same side of the main slot and slide along the direction of the square tongue from the retracted position to the extended position. The front short slot is located in front of the rear short slot. When the square tongue is in the retracted position, the locking bar is aligned with the rear short groove. At this time, the locking bar can selectively enter and exit the rear short groove when the slider slides. Specifically, the locking bar enters the rear short groove when the slider is in the locked position, and exits the rear short groove and enters the main groove when the slider slides from the locked position to the unlocked position. Among them, when the card bar is in the rear short groove, the sliding of the square tongue relative to the lock housing assembly is limited; The second resultant motion of the slider also has a component motion on the Y-axis, and the component motion on the Y-axis causes the slider to slide from the locked position to the unlocked position, so that the card bar can be moved out of the rear short groove.

4. A multi-functional mortise lock according to claim 3, characterized in that: The functional slot is concave.

5. A multi-functional mortise lock according to claim 3, characterized in that: The rear sidewall of the front short groove, which is close to the rear short groove, extends obliquely upward from the bottom of the front short groove toward the rear short groove. The rear short groove extends obliquely upward from the bottom of the rear short groove towards the front short groove, close to the side wall of the front short groove.

6. A multi-functional mortise lock according to claim 1, characterized in that: The bore wall of the drive hole includes a front profile section for pushing the push rod when the connecting rod rotates counterclockwise and a rear profile section for pushing the push rod when the connecting rod rotates clockwise. The front and rear contour segments are curved or inclined surfaces.

7. A multi-functional mortise lock according to claim 1, characterized in that: The lever assembly also includes a first torsion spring for resetting the square tongue lever after it has rotated. The lock housing assembly is provided with a fixed stop block, and the square tongue lever is provided with a movable stop block; The first torsion spring is sleeved on the outside of the square tongue block, and the fixed block and the moving block are simultaneously clamped between the two spring legs of the first torsion spring, so that the square tongue block can be subjected to the elastic force of the first torsion spring when it rotates in a clockwise or counterclockwise direction.

8. A multi-functional mortise lock according to claim 2, characterized in that: The latch has a notch for the lock cylinder's dial to enter, and the locking bar is located in the notch. When the lock cylinder's dial rotates, it can selectively enter and exit the notch. When the lock cylinder's dial enters the notch, it pushes the locking bar to push the slider from the locked position to the unlocked position.

Images