Multifunctional mortise lock

Abstract

The invention 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. The purposes that the dead bolt and the inclined bolt are unlocked at the same time through the handle and the dead bolt is locked through the handle can be achieved, and use by a user is facilitated.

Description

Technical Field

[0001] The invention relates to a multifunctional mortise lock. Background Art

[0002] Chinese utility model patent specification CN201225043Y discloses a multifunctional mortise door lock with quick opening and quick closing, including a lock body, a square tongue assembly, a tilted tongue assembly, a rotating block, a connecting plate, a square tongue return spring, a tilted tongue push block, an upper push block, a lower push block, etc. The square tongue assembly can be slidably installed in the lock body, the rotating block can be rotatably installed on the push block of the square tongue assembly through a column nail, and the connecting rod can be rotatably installed in the lock body through another column nail. A spindle-shaped hole is provided on the connecting rod, and a cylinder is provided on the rotating block that extends into the spindle-shaped hole. When the connecting rod rotates, the sliding of the square tongue assembly is driven by the rotating block, and the rotation of the connecting rod is caused by rotating the handle with the help of the left and right push heads of the upper and lower push blocks to push the vertical push head of the connecting rod. With the help of the above structure, the square tongue and the tilted tongue can be locked and unlocked directly by using the handle without inserting a key, which is convenient for use.

[0003] However, after the square tongue extends out of the lock body to lock, the connecting rod and the rotating block are in a free state without any force acting on them, and the square tongue can be easily pried open, so the safety needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a multifunctional mortise lock, comprising a lock housing assembly, a square tongue assembly, a connecting rod, a shift block assembly, and a latch bolt assembly; the middle portion 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 driving hole; the square tongue assembly comprises a square tongue, which is slidably mounted in the lock housing assembly relative to the lock housing assembly between an extended position and a retracted position; the latch bolt assembly is slidably mounted in the lock housing assembly between an extended position and a retracted position, a second return spring is provided between the latch bolt assembly and the lock housing assembly for driving the latch bolt assembly back to the extended position; the shift block assembly comprises a latch bolt shift block and a square tongue shift block for connecting to a handle so as to rotate with the handle, the square tongue shift block being rotatably mounted in the lock housing assembly In the component, the square tongue block is provided with a left dial head and a right dial head at intervals in the circumferential direction of the square tongue block, and the oblique tongue block is provided with an upper dial head extending toward the oblique tongue assembly and extending into the oblique tongue assembly, and the upper dial head pushes the oblique tongue assembly to slide to the retracted position when the oblique tongue block rotates clockwise; the upper end of the connecting rod is placed between the left dial head and the right dial head; the left dial head pushes the upper end of the connecting rod to drive the connecting rod to rotate in the clockwise direction when the square tongue block rotates counterclockwise; the right dial head pushes the upper end of the connecting rod to drive the connecting rod to rotate counterclockwise when the square tongue block rotates clockwise; the square tongue assembly also includes a slider and a first return spring, and the slider is provided with a push rod extending into the drive hole; the slider is relatively movable between the locked position and the unlocked position. The square tongue is slidably mounted on the square tongue, wherein 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 being perpendicular to the Y-axis to form a plane rectangular coordinate system, and the slider is fixed relative to the square tongue on the X-axis; the lock housing assembly is provided with a functional slot, the functional slot comprising a main slot extending along the X-axis and a front short slot provided on one side of the main slot and connected to the main slot; the slider is provided with a clip inserted into the functional slot, the clip aligning with the front short slot when the square tongue is in the extended position, and at this time the clip can selectively enter and exit the front short slot when the slider slides, wherein the clip enters the front short slot when the slider is in the locked position, and the clip exits the front short slot and enters the main slot when the slider slides from the locked position to the unlocked position; wherein, when the clamping bar is in the main slot, the square tongue is allowed to slide relative to the lock housing assembly, and when the clamping 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 arranged between the square tongue and the slider to drive the slider back to the locked position; when the connecting rod rotates counterclockwise, the hole wall of the driving hole pushes the push rod in a positive direction to drive the slider to perform a first planar combined motion relative to the lock housing assembly on the XY plane, and the first combined motion of the slider has a sub-motion on the X-axis and the Y-axis respectively, wherein the first combined motion of the slider is decomposed into the sub-motion on the Y-axis so that the slider slides from the locked position to the unlocked position, so that the clamping bar moves out of the front short slot; the first combined motion of the slider is decomposed into the sub-motion on the X-axis so that the slider drives the square tongue 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, thereby driving the slider to perform a second planar combined motion relative to the lock housing assembly in the XY plane, wherein the second combined motion of the slider includes at least a partial motion along the X-axis, and the partial motion along the X-axis causes the slider to drive the square tongue to slide from a retracted position to an extended position; the oblique tongue block is rotatably mounted outside the square tongue block; the oblique tongue block is provided with a fixed stop portion, and the square tongue block is provided with a movable stop portion; when the square tongue block rotates clockwise, the movable stop portion pushes the fixed stop portion, causing the square tongue block to drive the oblique tongue block to rotate clockwise; when the square tongue block rotates counterclockwise, the movable stop portion moves away from the fixed stop portion, causing the square tongue block to rotate relative to the lock housing assembly while the oblique tongue block remains stationary relative to the lock housing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 and Figure 2 Two perspective views of the present invention are shown respectively at different angles;

[0006] Figure 3 Shows a front view of the present invention;

[0007] Figure 4 and Figure 5 Two exploded perspective views of the present invention at two different angles are shown respectively;

[0008] Figures 6 to 8 Three perspective views of the tongue assembly of the present invention are shown at three different angles;

[0009] Figure 9 A front view of the square bolt assembly of the present invention is shown, wherein the latch bolt release lever is in a lowered position and the slider is in a locked position;

[0010] Figure 10 Shown in Figure 9 Schematic diagram after sliding the latch unlocking lever to the raised position and sliding the slider to the unlocked position;

[0011] Figure 11 Shows a front view of the connecting rod of the present invention;

[0012] Figure 12 and Figure 13 Two exploded perspective views of the tongue assembly of the present invention are shown at two different angles;

[0013] Figures 14 to 16 Three perspective views of the shift block assembly of the present invention are shown at three different angles;

[0014] Figures 17 to 19 Three exploded perspective views of the shift block assembly of the present invention are shown at three different angles;

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

[0016] Figure 21 Shown in Figure 20 Schematic diagram of the square tongue block after rotating counterclockwise on the basis of FIG.

[0017] Figure 22 Shown in Figure 20 Schematic diagram of the square tongue block after rotating it clockwise on the basis of FIG.

[0018] Figures 23 to 41 The working principle diagram of the present invention is shown, wherein: Figure 23 This is a front view of the present invention showing both the square bolt and the latch bolt assembly in a locked state; Figure 24 yes Figure 23 Rear view; Figure 25 yes Figure 24 A partial enlarged view of part A; Figure 26 is Figure 23 Schematic diagram after continuing to press down the handle on the basis of Figure 27 is Figure 26 Based on the rear view, only a partial schematic diagram of the main slot is shown; Figure 28 is Figure 26 Schematic diagram after continuing to press down the handle on the basis of Figure 29 is Figure 28 Based on the rear view, only a partial schematic diagram of the main slot is shown;

[0019] Figure 30 is Figure 28 Schematic diagram after continuing to press down the handle on the basis of Figure 31 A schematic diagram showing the slider returning to the locked position under the action of the first return spring and the clamping bar entering the rear short slot; Figure 32 is a front view of the present invention showing the square bolt in an unlocked state and the latch bolt assembly in a locked state; Figure 33 This is a schematic diagram of the lock after the dial wheel is turned clockwise with the key; Figure 34 is Figure 33 Schematic diagram after continuing to turn the lock wheel in clockwise direction; Figure 35 is Figure 34 Schematic diagram after continuing to turn the lock wheel in clockwise direction; Figure 36 is Figure 32 Schematic diagram of lifting the handle to drive the square tongue block to rotate counterclockwise for a certain angle; Figure 37 is Figure 36 Based on the rear view, only a partial schematic diagram of the main slot is shown; Figure 38 is Figure 37 Schematic diagram after continuing to lift the handle on the basis of Figure 39 is Figure 38 Based on the rear view, only a partial schematic diagram of the main slot is shown; Figure 40 is Figure 38 Schematic diagram after continuing to lift the handle on the basis of Figure 41 A schematic diagram showing the block returning to the locked position under the action of the first return spring and the latching bar entering the front short slot.

[0020] Figure Number:

[0021] 10 Lock housing assembly, 101 functional slot, 102 main slot, 103 front short slot, 104 rear short slot, 105 rear slot side wall of the front short slot, 106 slot bottom of the front short slot, 107 front slot side wall of the rear short slot, 107 slot bottom of the rear short slot, 109 fixed block; 20 Square tongue assembly, 201 square tongue, 202 slider, 203 first return spring, 204 push rod, 205 slide slot, 206 card strip, 207 oblique tongue unlocking lever; 30 Connecting rod , 301 driving hole, 302 front contour segment, 303 rear contour segment; 40 shift block assembly, 401 oblique tongue shift block, 402 square tongue shift block, 403 left shift head, 404 right shift head, 405 square hole, 406 upper shift head, 407 fixed stop part, 408 dynamic stop part, 409 lower shift head, 410 first torsion spring, 411 dynamic stop block, 412 spring leg of the first torsion spring; 50 oblique tongue assembly, 501 second return spring; 60 dial wheel of the lock body. DETAILED DESCRIPTION

[0022] The present application scheme is further described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 41 A multifunctional mortise lock is shown, comprising a lock housing assembly 10, a square tongue assembly 20, a connecting rod 30, a shift block assembly 40, and a latch tongue assembly 50. The middle portion of the connecting rod 30 is rotatably mounted in the lock housing assembly 10 relative to the lock housing assembly 10, and a drive hole 301 is defined at the lower end of the connecting rod 30. The square tongue assembly 20 includes a square tongue 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.

[0024] The latch bolt assembly 50 is slidably mounted in the lock housing assembly 10 between an extended position and a retracted position. In this embodiment, the sliding direction of the latch bolt assembly 50 is parallel to the sliding direction of the square bolt 201. A second return spring 501 is provided between the latch bolt assembly 50 and the lock housing assembly 10 to drive the latch bolt 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 bolt assembly 50.

[0025] The shift block assembly 40 includes a latch bolt shift block 401 and a square bolt shift block 404 for connecting to a handle (not shown) so as to rotate with the handle. The square bolt shift block 402 is rotatably mounted in the lock housing assembly 10. The square bolt shift block 402 is provided with a left shift head 403 and a right shift head 404 spaced apart in the circumferential direction thereof. In this embodiment, the square bolt shift block 402 is provided with a square hole 405 passing through the square bolt shift block. The handle is connected to the square bolt shift block 402 by means of a square rod (not shown) inserted into the square hole 405, thereby allowing the handle to drive the square bolt shift block 402 to rotate. The latch bolt shift block 401 is provided with an upper shift head 406 extending toward and into the latch bolt assembly 50. The upper shift head 406 pushes the latch bolt assembly 50 to slide toward the retracted position when the latch bolt shift block 401 rotates clockwise.

[0026] The upper end of the connecting rod 30 is placed between the left shift head 403 and the right shift head 404;

[0027] When the tongue block 402 rotates counterclockwise, the left shift head 403 pushes the upper end of the connecting rod 30 to drive the connecting rod 30 to rotate clockwise. When the tongue block 402 rotates clockwise, the right shift head 404 pushes the upper end of the connecting rod 30 to drive the connecting rod 30 to rotate counterclockwise. The tongue assembly 20 further includes a slider 202 and a first return spring 203. The slider 202 is provided with a push rod 204 that extends into the drive hole 301.

[0028] The slider 202 is mounted on the tongue 201 so as to slide relative to the tongue 201 between a locked position and an unlocked position, wherein 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 sliding groove 205 parallel to the Y-axis is provided on the square tongue 201, and the slider 202 slides along the sliding groove 205;

[0029] 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 provided on one side of the main slot 102 and communicating with the main slot 102;

[0030] The slider 202 is provided with a clip 206 that is inserted into the functional slot 101. In this embodiment, the clip 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 clip 206 is aligned with the front short slot 103. At this time, the clip 206 can selectively enter and exit the front short slot 103 when the slider 202 slides. Specifically, the clip 206 enters the front short slot 103 when the slider 202 is in the locked position, and the clip 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.

[0031] When the clamping strip 206 is in the main slot 102, the square tongue 201 is allowed to slide relative to the lock housing assembly 10. When the clamping strip 206 is in the front short slot 103, the square tongue 201 is restricted from sliding relative to the lock housing assembly 10. As a result, 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 toward the retracted position, thereby achieving the purpose of preventing prying and improving security.

[0032] The first return spring 203 is provided 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 mounted on the square tongue. One leg of the first return spring abuts against the square tongue, and the other leg abuts against the slider, so that the slider always has a tendency to return to the locked position.

[0033] When the connecting rod 30 rotates counterclockwise, the wall of the driving hole 301 pushes the push rod 204 in the positive direction to drive the slider 202 to perform a first planar motion relative to the lock housing assembly 10 on the XY plane. The first planar motion of the slider 202 has a sub-motion on the X-axis and the Y-axis respectively, wherein:

[0034] The first combined motion of the slider 202 is decomposed into a component motion on the Y-axis, causing the slider 202 to slide from the locked position to the unlocked position, so that the locking strip 206 moves out of the front short slot; the first combined motion of the slider 202 is decomposed into a component motion on the X-axis, causing the slider 202 to drive the square tongue 201 to slide from the extended position to the retracted position; when the connecting rod 30 rotates clockwise, the hole wall of the drive hole 301 pushes the push rod 204 in the opposite direction to drive the slider 202 to perform a second combined motion in the XY plane relative to the lock housing assembly 10, wherein the second combined motion of the slider 202 has a component motion on at least the X-axis, and the component motion on the X-axis causes the slider 202 to drive the square tongue 201 to slide from the retracted position to the extended position;

[0035] This technical solution can drive the movement of the tongue to lock and open the door with the help of the slider, and can also lock the tongue to improve safety.

[0036] The oblique tongue block 401 is rotatably mounted on the square tongue block 402. A fixed stop 407 is provided on the oblique tongue block 401, and a movable stop 408 is provided on the square tongue block 402. When the square tongue block 402 rotates clockwise, the movable stop 408 pushes the fixed stop 407, causing the square tongue block 402 to drive the oblique tongue block 401 to rotate clockwise. When the square tongue block 402 rotates counterclockwise, the movable stop 408 moves away from the fixed stop 407, causing the square tongue block 402 to rotate relative to the lock case assembly 10 while the oblique tongue block 401 remains stationary relative to the lock case assembly 10.

[0037] in, Figure 20 The figure shows that the oblique tongue block 401 and the square tongue block 402 are both in an initial state without rotation, at which time the fixed stop portion 407 is in contact with the movable stop portion 408. Figure 21 As shown, in Figure 20 On the basis of rotating the square tongue block 402 counterclockwise, the moving stop portion 408 on the square tongue block 402 is away from the fixed stop portion 407 on the oblique tongue block 401. Figure 22 As shown, in Figure 20 On the basis of rotating the square tongue block 402 clockwise, the movable stop portion 408 on the square tongue block 402 pushes the fixed stop portion 407 on the oblique tongue block 401, thereby causing the square tongue block 402 to drive the oblique tongue block 401 to rotate clockwise.

[0038] When the latch bolt assembly is in the extended position and the square bolt is in the extended position, the user drives the square bolt shift block to rotate clockwise by using the handle (for example, pressing the handle downward), the latch bolt shift block also rotates clockwise, and the upper shift head pushes the latch bolt assembly to slide toward the retracted position, thereby unlocking the latch bolt assembly. At the same time, the right shift head pushes the connecting rod to rotate counterclockwise, and the connecting rod drives the slider and the square bolt, so that the square bolt slides toward the retracted position, thereby unlocking the square bolt, thereby achieving the purpose of simultaneously unlocking the square bolt and the latch bolt by the handle, which is convenient for the user;

[0039] When the oblique bolt assembly is in the extended position and the square bolt is in the retracted position, when the user uses the handle (for example, lifting the handle) to drive the square bolt block to rotate counterclockwise (for example, lifting the handle), the oblique bolt block will not rotate with the square bolt block, and the oblique bolt assembly remains in the extended position, and the left shift head pushes the connecting rod to rotate clockwise, and the connecting rod drives the slider and the square bolt, so that the square bolt slides to the extended position, that is, the square bolt is locked, thereby achieving the purpose of locking the square bolt with the handle, which is convenient for the user.

[0040] The square tongue assembly 20 further includes a latch bolt unlocking lever 207, which is slidably mounted on the square tongue 201 between an upward position and a downward position, wherein the sliding direction of the latch bolt unlocking lever 207 relative to the square tongue 201 is parallel to the Y-axis.

[0041] The latch bolt block 401 is further provided with a lower shifting head 409 located above the latch bolt unlocking rod 207. When the latch bolt unlocking rod 207 slides from the lowered position to the raised position, it pushes the lower shifting head 409 to drive the latch bolt block 401 to rotate clockwise.

[0042] The lock housing assembly 10 is also provided with a lock head dial wheel 60 , which is located below the latch bolt unlocking lever 207 . When the lock head dial wheel 60 rotates clockwise, it pushes the latch bolt unlocking lever 207 to slide from a lowered position to an upper position.

[0043] This technical solution enables the latch bolt unlocking lever to rotate the latch bolt pusher clockwise when the key is used to drive the lock's dial wheel. This in turn causes the latch bolt assembly to slide toward its retracted position, allowing the latch bolt to be unlocked without turning the handle, facilitating user convenience. This embodiment allows the lock head within the lock housing assembly to be positioned 25 mm from the door edge.

[0044] The square tongue 201 is provided with a notch 208 for the lock's dial 60 to enter. The latch bar 206 is located within the notch 208. The dial 60 can selectively move in and out of the notch 208 as the lock's dial 60 rotates. When the dial 60 enters the notch 208, it pushes against the latch bar 206, causing the slider to slide from the locked position to the unlocked position. This technical solution is well-designed, allowing the square tongue to be unlocked or opened by rotating the dial with a key.

[0045] The functional slot 101 further includes a rear short slot 104 communicating 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 along the direction in which the square tongue 201 slides from the retracted position to the extended position, the front short slot 103 is located in front of the rear short slot 104.

[0046] The clip 206 is aligned with the rear short slot 104 when the tongue 201 is in the retracted position. The clip 206 can selectively enter and exit the rear short slot 104 when the slider 202 slides. The clip 206 enters the rear short slot 104 when the slider 202 is in the locked position. The clip 206 exits the rear short slot 104 and enters the main slot 102 when the slider 202 slides from the locked position to the unlocked position.

[0047] When the clamping strip 206 is in the rear short slot 104, the tongue 201 is prevented from sliding relative to the lock housing assembly 10, thereby keeping the tongue 201 in a relatively stable state when in the retracted position to prevent it from falling off.

[0048] The second combined motion of the slider 202 also has a partial motion on the Y-axis, and the partial motion on the Y-axis causes the slider 202 to slide from the locked position to the unlocked position, so that the latching bar 206 moves out of the rear short slot 104 .

[0049] The functional groove 101 is concave.

[0050] The rear groove sidewall 105 of the front short groove 103 adjacent to the rear short groove 104 extends obliquely upward from the groove bottom 106 of the front short groove toward the rear short groove 104, so that the slider can move out of the front short groove along the rear groove sidewall when performing the first closing movement. The rear groove sidewall of the front short groove is arranged to be inclined to limit the slider (i.e., the square tongue) to only slide in one direction parallel to the X-axis.

[0051] The front groove side wall 107 of the rear short groove 105 close to the front short groove 103 extends obliquely upward from the groove bottom 108 of the rear short groove toward the front short groove 103, so that the slider can move out of the rear short groove along the front groove side wall when performing the second closing movement. The front groove side wall of the rear short groove is set to be inclined to limit the slider (i.e., the square tongue) to only slide in one direction parallel to the X-axis.

[0052] The wall of the driving hole 301 includes a front contour section 302 for pushing the push rod 204 when the connecting rod 30 rotates counterclockwise, and a rear contour section 303 for pushing the push rod 204 when the connecting rod 30 rotates clockwise.

[0053] The front contour section 302 and the rear contour section 303 are curved or inclined surfaces so that the slider 202 can move in the form of a combined motion on the XY plane when sliding. Figure 11 As shown, the front contour section 302 is a curved surface, and the rear contour section 303 is an inclined surface. In this embodiment, the driving hole 301 is a special-shaped hole.

[0054] The shift block assembly 40 also includes a first torsion spring 410 for driving the tongue shift block 402 to return to its original position after rotation; a fixed stop block 109 is provided on the lock housing assembly 10, and a movable stop block 411 is provided on the tongue shift block 402; the first torsion spring 410 is sleeved on the outside of the tongue shift block 402, and the fixed stop block 109 and the movable stop block 411 are simultaneously clamped between the two elastic legs 412 of the first torsion spring, so that the tongue shift block 402 can be subjected to the elastic force of the first torsion spring 410 when rotating in the clockwise direction or counterclockwise direction. In addition, using the two elastic legs of the first torsion spring to simultaneously clamp the fixed stop block and the movable stop block can make the rotation of the tongue shift block more stable, and can accurately return to its original position after rotation to avoid loosening.

[0055] The working principle of the present invention can be seen as follows:

[0056] 1. Open the square bolt and the latch bolt assembly simultaneously by the handle

[0057] like Figure 23 The figure shows the front view of the present invention in which the square tongue and the latch tongue assembly are both in the locked state, the latch tongue assembly is in the extended position, and the square tongue is in the extended position. Figure 24 yes Figure 23 Rear view;

[0058] like Figure 26 As shown, pressing the handle down drives the square tongue block to rotate clockwise, and the right dial head pushes the upper end of the connecting rod to drive the connecting rod to rotate counterclockwise. The connecting rod uses the front contour section of the driving hole at its lower end to push the push rod forward to drive the slider to perform the first closing movement, and the slider 202 slides from the locked position to the unlocked position, as shown in FIG. Figure 27 As shown, the latch bar 206 slides along the rear sidewall 105 of the front short slot and gradually exits the slot, causing the square tongue 201 to slide from the extended position to the retracted position. Furthermore, as the square tongue block rotates clockwise, the dynamic stop pushes the fixed stop, driving the latch tongue block to rotate clockwise as well. The upper head of the latch tongue block pushes the latch tongue assembly from the extended position to the retracted position.

[0059] like Figure 28 As shown, continue to press the handle to drive the square tongue block to continue to rotate clockwise, the slider 202 continues to make the first closing movement, 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 clip 206 is completely out of the front short slot.

[0060] like Figure 30 As shown, continue to press the handle downward to drive the square tongue block to continue to rotate clockwise, the slider 202 reaches the unlocked position, the square tongue reaches the retracted position, and the oblique tongue assembly reaches the retracted position.

[0061] Thereby, the handle unlocks the square bolt and the oblique bolt assembly simultaneously.

[0062] After that, when the handle is released, the slider returns to the locked position under the action of the first return spring, and the clamping strip 206 enters the rear short slot (such as Figure 31 As shown), the square tongue block is reset under the action of the first torsion spring, and the oblique tongue assembly and the oblique tongue block are reset under the action of the second reset spring.

[0063] 2. Open the latch bolt assembly with the key

[0064] like Figure 32 1 is a front view of the present invention, in which the square bolt is in an unlocked state and the latch bolt assembly is in a locked state, the thumbwheel 60 of the lock head is in an initial state, and the latch bolt unlocking rod 207 is in a lowered position.

[0065] like Figure 33 As shown, the dial wheel 60 of the lock head is rotated clockwise by the key. At this time, the dial wheel 60 of the lock head contacts the lower end of the latch bolt unlocking rod 207;

[0066] like Figure 34As shown, the lock head's dial wheel 60 continues to rotate clockwise to push the latch bolt unlocking lever 207 upward from the lowered position to the raised position. As the latch bolt unlocking lever 207 slides upward, it pushes the lower shifting head 409 of the latch bolt shifting block, causing the latch bolt shifting block to rotate clockwise. At this point, the upper shifting head of the latch bolt shifting block pushes the latch bolt assembly from the extended position to the retracted position. As the latch bolt shifting block rotates clockwise due to the latch bolt unlocking lever 207, the fixed stop portion moves away from the dynamic stop portion, causing the latch bolt shifting block to remain stationary.

[0067] like Figure 35 As shown, the dial wheel 60 of the lock head is continuously rotated in the clockwise direction, the latch bolt unlocking rod 207 reaches the raised position, and the latch bolt assembly reaches the retracted position, thereby achieving the key-opening of the latch bolt assembly.

[0068] 3. Lock the square tongue by the handle

[0069] Figure 36 is Figure 32 Schematic diagram after the handle is lifted up to drive the square tongue block to rotate counterclockwise for a certain angle. During the counterclockwise rotation of the square tongue block, the left dial head pushes the upper end of the connecting rod to drive the connecting rod to rotate clockwise. The connecting rod pushes the push rod in the opposite direction with the help of the rear contour section of the driving hole at its lower end, thereby driving the slider to perform the second closing movement. The slider 202 slides from the locked position to the unlocked position. Figure 37 As shown, the clip 206 slides along the front sidewall of the rear short slot and gradually moves out of the rear short slot, and the square tongue 201 slides from the retracted position to the extended position. During the counterclockwise rotation of the square tongue block, the moving stop portion moves away from the fixed stop portion, so the oblique tongue block remains stationary.

[0070] like Figure 38 As shown, the handle is continuously lifted to drive the tongue block to continue to rotate counterclockwise, and the slider 202 continues to make the second closing motion, as shown in FIG. Figure 39 As shown, the clamping strip 206 completely moves out of the rear short slot, and the square tongue 201 continues to slide toward the extended position.

[0071] like Figure 40 As shown, continue to lift the handle to drive the square tongue block to continue to rotate counterclockwise, and the square tongue reaches the extended position.

[0072] In this way, the handle can be locked on the square tongue.

[0073] After that, when the handle is released, the slider returns to the locked position under the action of the first return spring, and the clamping strip 206 enters the front short slot (such as Figure 41 shown).

[0074] 4. Lock the tongue with a key

[0075] When the tongue is in the retracted position and the slider is in the locked position, the process of locking the tongue with the key is Figure 32 To explain, Figure 32 On the basis of the figure, the dial wheel 60 of the lock head is rotated counterclockwise by the key. When the dial wheel 60 of the lock head enters the notch 208 and touches the clamping strip 206 of the slider, it pushes the slider to slide upward, so that the slider slides from the locked position to the unlocked position, and the clamping strip moves out of the rear short groove. Thereafter, the dial wheel 60 of the lock head is continued to be rotated counterclockwise. The dial wheel 60 of the lock head will push the square tongue to slide forward and slide the square tongue from the retracted position to the extended position, thereby realizing the key locking of the square tongue.

[0076] 5. Open the tongue with the key

[0077] When the tongue is in the extended position and the slider is in the locked position, the process of opening the tongue by the key is assisted by Figure 23 To explain, Figure 23 On the basis of what is shown, the dial wheel 60 of the lock head is rotated clockwise by the key. When the dial wheel 60 of the lock head enters the notch 208 and touches the card strip 206 of the slider, it pushes the slider to slide upward, so that the slider slides from the locked position to the unlocked position, and the card strip moves out of the front short groove. Thereafter, the dial wheel 60 of the lock head continues to be rotated clockwise. The dial wheel 60 of the lock head will push the square tongue to slide backward, and the square tongue will slide from the extended position to the retracted position, so that the key can open the square tongue.

Claims

1. A multifunctional mortise lock comprising a lock housing assembly, a square tongue assembly, a connecting rod, a shift block assembly, and a latch tongue assembly; The middle portion of the connecting rod is rotatably mounted in the lock housing assembly relative to the lock housing assembly, and a driving hole is provided at the lower end of the connecting rod; The square tongue assembly includes a square tongue slidably mounted in the lock housing assembly relative to the lock housing assembly between an extended position and a retracted position; The latch bolt 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 latch bolt assembly and the lock housing assembly to drive the latch bolt assembly back to the extended position; The shift block assembly includes a latch bolt shift block and a square bolt shift block connected to the handle so as to rotate with the handle. The square bolt shift block is rotatably mounted in the lock housing assembly. The square bolt shift block is provided with a left shift head and a right shift head spaced apart in the circumferential direction of the square bolt shift block. The latch bolt shift block is provided with an upper shift head extending toward and into the latch bolt assembly. The upper shift head pushes the latch bolt assembly to slide toward a retracted position when the latch bolt shift block rotates clockwise. The upper end of the connecting rod is placed between the left shift head and the right shift head; When the square tongue shift block rotates counterclockwise, the left shift head pushes the upper end of the connecting rod to drive the connecting rod to rotate clockwise; When the square tongue shift block rotates in the clockwise direction, the right shift head pushes the upper end of the connecting rod to drive the connecting rod to rotate in the counterclockwise direction; Its characteristics are: The square tongue assembly further comprises a slider and a first return spring, wherein the slider is provided with a push rod extending into the drive hole; The slider is mounted on the square tongue so as to slide relative to the square tongue between a locked position and an unlocked position, wherein 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, wherein the X-axis and the Y-axis are perpendicular to form a plane rectangular coordinate system, and 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 provided on one side of the main slot and connected to the main slot; The slider is provided with a clip that is inserted into the functional slot. When the square tongue is in the extended position, the clip is aligned with the front short slot. At this time, the clip can selectively enter and exit the front short slot when the slider slides. Specifically, when the slider is in the locked position, the clip enters the front short slot. When the slider slides from the locked position to the unlocked position, the clip exits the front short slot and enters the main slot. When the clamping bar is in the main slot, the square tongue is allowed to slide relative to the lock housing assembly, while when the clamping 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 provided 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 driving hole pushes the push rod in the positive direction to drive the slider to perform a first planar motion relative to the lock housing assembly on the XY plane. The first planar motion of the slider has separate motions on the X axis and the Y axis, wherein: The first combined motion of the slider is decomposed into a sub-motion on the Y-axis, causing the slider to slide from the locked position to the unlocked position, so that the card bar moves out of the front short slot; The first combined motion of the slider is decomposed into a sub-motion on the X-axis so that the slider drives the square tongue 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 to drive the slider to perform a second planar combined motion relative to the lock housing assembly in the XY plane, wherein the second combined motion of the slider has at least a partial motion in the X-axis, and the partial motion in the X-axis causes the slider to drive the square tongue to slide from the retracted position to the extended position; The oblique tongue block is rotatably mounted on the square tongue block; The oblique tongue block is provided with a fixed stop portion, and the square tongue block is provided with a dynamic stop portion; When the square tongue block rotates clockwise, the movable stop portion pushes the fixed stop portion so that the square tongue block drives the oblique tongue block to rotate clockwise. The moving stop portion moves away from the fixed stop portion when the square tongue shift block rotates counterclockwise, so that the square tongue shift block rotates relative to the lock housing assembly while the oblique tongue shift block remains stationary relative to the lock housing assembly.

2. A multifunctional mortise lock according to claim 1, characterized in that: The square bolt assembly further includes a latch bolt unlocking lever, which is slidably mounted on the square bolt relative to the square bolt between an upward position and a downward position, wherein the sliding direction of the latch bolt unlocking lever relative to the square bolt is parallel to the Y axis; The latch bolt block is further provided with a lower shifting head located above the latch bolt unlocking rod. When the latch bolt unlocking rod slides from the lowered position to the raised position, it pushes the lower shifting head to drive the latch bolt block to rotate clockwise. The lock housing assembly is also provided with a dial wheel for the lock head, which is located below the latch bolt unlocking rod. When the dial wheel for the lock head rotates clockwise, it pushes the latch bolt unlocking rod to slide from a lowered position to an upper raised position.

3. The multifunctional mortise lock according to claim 2, characterized in that: The functional slot also includes a rear short slot connected to the main slot, the front short slot and the rear short slot are located on the same side of the main slot, and along the direction in which the square tongue slides from the retracted position to the extended position, the front short slot is located in front of the rear short slot; The clip is aligned with the rear short slot when the square tongue is in the retracted position. At this time, the clip can selectively enter and exit the rear short slot when the slider slides. Specifically, the clip enters the rear short slot when the slider is in the locked position, and exits the rear short slot and enters the main slot when the slider slides from the locked position to the unlocked position. Wherein, when the clamping strip is in the rear short slot, the square tongue is prevented from sliding relative to the lock housing assembly; The second combined motion of the slider also has a partial motion on the Y axis, and the partial motion on the Y axis causes the slider to slide from the locked position to the unlocked position, so that the card strip moves out of the rear short slot.

4. The multifunctional mortise lock according to claim 3, characterized in that: The functional groove is concave.

5. The multifunctional mortise lock according to claim 3, characterized in that: The rear groove side wall of the front short groove close to the rear short groove extends obliquely upward from the groove bottom surface of the front short groove toward the rear short groove; The front groove side wall of the rear short groove close to the front short groove extends obliquely upward from the groove bottom of the rear short groove toward the front short groove.

6. The multifunctional mortise lock according to claim 5, characterized in that: The hole wall of the driving hole includes a front contour section for pushing the push rod when the connecting rod rotates counterclockwise and a rear contour section for pushing the push rod when the connecting rod rotates clockwise; The front contour segment and the rear contour segment are curved surfaces or inclined surfaces.

7. The multifunctional mortise lock according to claim 6, characterized in that: The shift block assembly also includes a first torsion spring for driving the square tongue shift block to return to its original position after rotation; The lock housing assembly is provided with a fixed stopper, and the square tongue block is provided with a dynamic stopper; The first torsion spring is sleeved outside the square tongue block, and the fixed block and the movable block are clamped between the two elastic legs of the first torsion spring at the same time, so that the square tongue block can be subjected to the elastic force of the first torsion spring when rotating in the clockwise direction or counterclockwise direction.

8. The multifunctional mortise lock according to claim 2, characterized in that: The square tongue is provided with a notch for the dial wheel of the lock to enter, and the clamping strip is located in the notch. When the dial wheel of the lock is rotated, it can selectively enter and exit the notch. When the dial wheel of the lock enters the notch, it pushes the clamping strip to push the slider to slide from the locked position to the unlocked position.

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