A kind of inclined tongue mechanism

Abstract

The present invention provides a latch bolt mechanism. It solves the problem that a lock requires a large force when opening a door and is inconvenient to use. When opening a door, the present invention drives a shift fork to drive a drag plate to move into a lock box, and the drag plate drives a vertical plate to rotate around a connection between the vertical plate and a horizontal plate in a direction away from a side panel through a shift hook and a shift rod, so that an end of the horizontal plate away from the vertical plate rotates downward so that a slot on the horizontal plate is separated from a blocking column to complete unlocking of a guide column, and a door frame is clamped on the plane of the latch bolt, and the rotating door drives the latch bolt to rotate around a rotating rod in a direction of an upper inclined surface of the latch bolt so that an end of the latch bolt located outside the lock box gradually rotates into the lock box, and the door is opened more quickly and labor-savingly, and the friction between the latch bolt and the door frame is greatly reduced by rotating the latch bolt, thereby reducing the wear of the latch bolt, and by setting the latch bolt rotation on the guide rod, when installing doors with different opening and closing directions, the direction of the latch bolt can be changed by directly rotating the latch bolt to adapt to doors with different opening and closing directions, and the installation is more convenient.

Description

Technical Field

[0001] The device of the invention belongs to the technical field of locks, and particularly relates to a latch bolt mechanism. Background Art

[0002] With the development of locks, more and more electronic door locks or ordinary door locks are widely used in hotels, guesthouses, homes and other occasions. In existing door locks, the latch bolt is usually fixed on the sliding rod, and the driving structure inside the lock drives the sliding rod to move along the length direction of the sliding rod to control the in and out of the latch bolt. When opening the door, the plane on the latch bolt fits with the door frame, and the latch bolt needs to be driven to move into the lock box by overcoming the sliding friction between the door frame and the latch bolt. The plane on the latch bolt scrapes against the door frame, and the latch bolt will be greatly worn after long-term use. Moreover, a large force is required when opening the door, which is inconvenient to use. Summary of the invention

[0003] The device of the present invention provides a latch bolt mechanism to solve the problem that a lock requires a large force when opening a door and is inconvenient to use.

[0004] The inventive objective of the present invention is achieved through the following technical solutions: a tilted tongue mechanism, which is installed in a lock box and is perpendicular to a side panel on the lock box, comprising a guide piece fixedly arranged in the lock box and parallel to the side panel and a guide rod movably arranged on the guide piece and capable of reciprocating in a direction perpendicular to the guide piece, wherein the guide rod is rotatably provided with a tilted tongue at one end toward the side panel, one end of the tilted tongue is located on the outside of the lock box, the end of the guide rod facing the tilted tongue is the upper end, and both sides of the end of the tilted tongue located in the lock box are respectively fixed with a boss abutting against the inner wall of the above-mentioned side panel, the tilted tongue can flip around the bosses on both sides of the tilted tongue and the side panel at the joint, pushing the guide rod to move into the lock box and making the end of the tilted tongue located on the outside of the lock box gradually rotate into the lock box, the guide rod is sleeved with a spring that drives the guide rod to move toward the side panel direction, and the lock box is provided with a locking mechanism that locks the guide rod.

[0005] Preferably, a rotating rod is fixedly provided at the upper end of the guide rod, and the length direction of the rotating rod is parallel to the above-mentioned guide piece. A rotating groove extending toward the inside of the inclined tongue is provided at the lower end of the inclined tongue. The above-mentioned rotating rod is clamped in the rotating groove and enables the inclined tongue to rotate around the rotating rod. A stopper is fixedly provided on both sides of the upper end of the guide rod respectively. A guide groove penetrating the inclined tongue and the rotating groove and cooperating with the stopper is provided at the lower end of the inclined tongue. The inclined tongue can rotate around the rotating rod so that the two ends of the guide groove are respectively clamped on the stopper.

[0006] Preferably, a limit shoulder is fixedly provided at the upper ends of both ends of the guide groove, and the inclined tongue can rotate around the rotating rod so that the two limit shoulders are respectively clamped on the above-mentioned stop blocks, and the planes where the two limit shoulders are located gradually incline from the plane on the inclined tongue to the inclined surface.

[0007] The lock mechanism comprises a locking plate rotatably arranged in the lock box, a slide plate movably arranged in the lock box and capable of reciprocating in a direction perpendicular to the side panel, and a shift fork driving the slide plate to move. The lower end of the guide rod is fixedly provided with a stop post, the locking plate comprises a vertical plate and a horizontal plate fixedly arranged at the lower end of the vertical plate and extending in a direction away from the side panel, the locking plate can be rotated about the connection between the horizontal plate and the vertical plate, the horizontal plate is located below the above-mentioned stop post, and a clamping groove is opened on the horizontal plate for clamping the above-mentioned stop post, the upper end of the vertical plate is fixedly provided with a toggle rod perpendicular to the vertical plate, the lower end of the slide plate is fixedly provided with a toggle hook for clamping on the toggle rod and driving the toggle rod to move in a direction away from the side panel, and a torsion spring is fixedly provided in the lock box to drive the end of the horizontal plate away from the side panel to rotate upward around the connection between the horizontal plate and the vertical plate and to clamp the clamping groove on the above-mentioned stop post.

[0008] Preferably, the shift fork is rotatably arranged in the lock box via a rotating shaft, a sliding groove penetrating the slide plate is provided on the slide plate, the rotating shaft is inserted in the sliding groove, a stop groove penetrating the slide plate is provided on the slide plate, and a protrusion which is clamped in the stop groove is fixedly arranged at the lower end of the shift fork.

[0009] Preferably, a hook plate perpendicular to the horizontal plate is fixedly provided at one end of the horizontal plate away from the vertical plate, and one end of the torsion spring is fixedly provided on the hook plate.

[0010] Preferably, a rotating ring is sleeved on the blocking column, and the clamping groove on the horizontal plate is clamped on the rotating ring.

[0011] Compared with the prior art, the present invention drives the slide plate to move toward the inside of the lock box by driving the shift fork when opening the door, and the slide plate drives the vertical plate to rotate around the connection between the vertical plate and the horizontal plate in the direction away from the side panel through the shift hook and the shift rod, so that the end of the horizontal plate away from the vertical plate rotates downward so that the card slot on the horizontal plate disengages from the blocking column to complete the unlocking of the guide column, and the door frame is clamped on the plane of the inclined tongue, and the rotating door drives the inclined tongue to rotate around the rotating rod in the direction of the upper inclined surface of the inclined tongue so that the end of the inclined tongue located on the outside of the lock box gradually rotates into the lock box, which is faster and more labor-saving when opening the door, and the friction between the inclined tongue and the door frame is greatly reduced by rotating the inclined tongue, reducing the wear of the inclined tongue. The structure is simple and practical, and the inclined tongue rotation is set on the guide rod, when installing doors with different opening and closing directions, the inclined tongue can be directly rotated to change its direction to adapt to doors with different opening and closing directions, and the installation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall structural view of the present invention after installation;

[0013] Figure 2 It is a structural explosion diagram of the present invention;

[0014] Figure 3 It is a cutaway view of the oblique tongue;

[0015] Figure 4 This is the overall structural view of the carriage;

[0016] Figure 5 This is the overall structural view of the shift fork;

[0017] Figure 6 It is the overall structural view of the locking piece;

[0018] Figure 7 This is the overall structural view after locking.

[0019] Markings in the figure: 1. lock box; 2. side panel; 3. guide plate; 4. guide rod; 5. oblique tongue; 6. boss; 7. rotating rod; 8. rotating groove; 9. block; 10. guide groove; 11. spring; 12. locking mechanism; 13. limit shoulder; 14. locking plate; 15. drag plate; 16. fork; 17. stop column; 18. vertical plate; 19. horizontal plate; 20. slot; 21. toggle rod; 22. toggle hook; 23. torsion spring; 24. rotating shaft; 25. sliding groove; 26. stop groove; 27. block; 28. hook plate; 30. rotating ring. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings: Figure 1 As shown, a tilted tongue mechanism is installed in a lock box 1 and is perpendicular to a side panel 2 on the lock box 1, comprising a guide piece 3 fixedly arranged in the lock box 1 and parallel to the side panel 2 and a guide rod 4 movably arranged on the guide piece 3 and capable of reciprocating in a direction perpendicular to the guide piece 3, and a tilted tongue 5 is rotatably arranged at one end of the guide rod 4 toward the side panel 2, and one end of the tilted tongue 5 is located on the outside of the lock box 1, and a locking mechanism 12 for locking the guide rod 4 is arranged on the lock box 1.

[0021] like Figure 2 and Figure 3As shown, the end of the guide rod 4 facing the inclined tongue 5 is the upper end, and the two sides of the inclined tongue 5 located at the inner end of the lock box 1 are respectively fixed with a boss 6 abutting against the inner wall of the above-mentioned side panel 2, and the upper end of the guide rod 4 is fixed with a rotating rod 7, and the length direction of the rotating rod 7 is parallel to the above-mentioned guide piece 3, and the lower end of the inclined tongue 5 is provided with a rotating groove 8 extending to the inside of the inclined tongue 5, and the above-mentioned rotating rod 7 is clamped in the rotating groove 8 and enables the inclined tongue 5 to rotate around the rotating rod 7, and a stopper 9 is fixedly provided on both sides of the upper end of the guide rod 4, and a guide groove 10 that penetrates the inclined tongue 5 and the rotating groove 8 and cooperates with the stopper 9 is opened at the lower end of the inclined tongue 5, and the inclined tongue 5 can rotate around the rotating rod 7 so that the two ends of the guide groove 10 are respectively clamped on the stopper 9, and the guide rod 4 is provided with a spring 11 that drives the guide rod 4 to move toward the side panel 2. The upper ends of the two ends of the guide groove 10 are respectively fixed with a limiting shoulder 13, and the inclined bolt 5 can rotate around the rotating rod 7 so that the two limiting shoulders 13 are respectively clamped on the above-mentioned block 9, and the plane where the two limiting shoulders 13 are located gradually tilts from the plane on the inclined bolt 5 to the inclined surface. By rotating the inclined bolt 5 on the guide rod 4. When installing doors with different opening and closing directions, the direction of the inclined bolt 5 can be changed by directly rotating the inclined bolt 5 to adapt to doors with different opening and closing directions. The installation is relatively convenient. The door frame is clamped on the plane of the inclined bolt 5. The rotating door drives the inclined bolt 5 to rotate around the rotating rod 7 in the inclined surface direction of the inclined bolt 5 so that the end of the inclined bolt 5 located outside the lock box 1 gradually rotates into the lock box 1. When opening the door, the door can be directly pushed in, the door is opened quickly, the structure is simple and easy to install, compared with the traditional inclined bolt 5 fixed on the guide rod 4, it is necessary to wait for the inclined bolt 5 to completely enter the lock box 1 so that the inclined bolt 5 and the door frame are completely separated before the door can be opened. The time for waiting for unlocking is shorter and the efficiency is higher.

[0022] The blocking column 17 is sleeved with a rotating ring 30, and the slot 20 on the horizontal plate 19 is clamped on the rotating ring 30. When the inclined tongue 5 moves into the lock box 1 under the action of external force, the blocking column 17 is stuck on the slot 20. The horizontal plate 19 converts the sliding between the slot 20 on the horizontal plate 19 and the blocking column 17 into rolling friction through the rotating ring 30, which greatly reduces the friction between the horizontal plate 19 and the blocking column 17, ensuring that the slot 20 on the horizontal plate 19 can be separated from the blocking column 17 when unlocking, which is very practical.

[0023] like Figure 4 , Figure 5 and Figure 6As shown, the locking mechanism 12 includes a locking piece 14 rotatably arranged in the lock box 1, a carriage 15 movably arranged in the lock box 1 and capable of reciprocating in a direction perpendicular to the side panel 2, and a shift fork 16 driving the carriage 15 to move. A stop column 17 is fixedly arranged at the lower end of the guide rod 4. The locking piece 14 includes a vertical plate 18 and a horizontal plate 19 fixedly arranged at the lower end of the vertical plate 18 and extending away from the side panel 2. The locking piece 14 can rotate around the connection between the horizontal plate 19 and the vertical plate 18. The horizontal plate 19 is located at the above-mentioned stop column 17. The horizontal plate 19 is provided with a slot 20 for engaging the above-mentioned stop column 17, the upper end of the vertical plate 18 is fixedly provided with a toggle rod 21 perpendicular to the vertical plate 18, the lower end of the drag plate 15 is fixedly provided with a toggle hook 22 for engaging with the toggle rod 21 and driving the toggle rod 21 to move away from the side panel 2, and the lock box 1 is fixedly provided with a torsion spring 23 that drives the end of the horizontal plate 19 away from the side panel 2 to rotate upward around the connection between the horizontal plate 19 and the vertical plate 18 and enables the slot 20 to engage with the above-mentioned stop column 17. The shift fork 16 is rotatably arranged in the lock box 1 through a rotating shaft 24, the drag plate 15 is provided with a sliding groove 25 that penetrates the drag plate 15, the above-mentioned rotating shaft 24 is inserted in the sliding groove 25, the drag plate 15 is provided with a stop groove 26 that penetrates the drag plate 15, and the lower end of the shift fork 16 is fixedly provided with a protrusion 27 that is engaged in the above-mentioned stop groove 26. A hook plate 28 perpendicular to the horizontal plate 19 is fixedly disposed at one end of the horizontal plate 19 away from the vertical plate 18 , and one end of the torsion spring 23 is fixedly disposed on the hook plate 28 .

[0024] like Figure 7As shown, when the door is opened, the motor drives the shift fork 16 to drive the drag plate 15 to move into the lock box 1, and the drag plate 15 drives the vertical plate 18 to rotate around the connection between the vertical plate 18 and the horizontal plate 19 in the direction away from the side panel 2 through the shift hook 22 and the shift rod 21, so that the end of the horizontal plate 19 away from the vertical plate 18 rotates downward so that the slot 20 on the horizontal plate 19 disengages from the stop column 17 to complete the unlocking of the guide rod, and push the door. The door frame drives the inclined bolt 5 to rotate around the rotating rod 7 through the rotating groove 8 through the plane on the inclined bolt 5. At the same time, the bosses 6 on both sides of the inclined bolt 5 are turned over at the joint of the side panel 2, driving the guide rod 4 to move into the lock box 1 and compress the spring 11. When the inclined bolt 5 rotates to the limit shoulder 13 on the other side of the inclined bolt 5 and contacts the other stop block 9, the door continues to rotate, and the door frame drives the inclined bolt 5 and the guide rod 4 to move into the lock box 1 along the length direction of the guide rod 4 until the inclined bolt 5 completely enters the lock box 1, and the door is opened. After the door is opened, the guide rod 4 is driven to move toward the side panel 2 by the spring 11 between the stopper 9 and the guide piece 3, and the inclined tongue 5 rotates around the rotating rod 7 through the rotating groove 8, and at the same time, the inclined tongue 5 rotates around the joint of the boss 6 and the side panel 2 and the end of the inclined tongue 5 moves toward the outside of the lock box 1, until the block 9 presses the boss 6 on the inclined tongue 5 against the side panel 2, and the door is opened. When locking the door, the motor drives the shift fork 16 to rotate and drive the drag plate 15 to move outside the lock box 1, and the pull hook 22 on the drag plate 15 releases the support of the pull rod 21, and the vertical plate 18 moves toward the side panel 2 around the connection between the vertical plate 18 and the horizontal plate 19, and the end of the horizontal plate 19 away from the vertical plate 18 rotates toward the vertical plate 18 so that the card slot 20 on the horizontal plate 19 is buckled on the stop column 17 to complete the locking of the inclined tongue 5.

[0025] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A latch bolt mechanism installed in a lock box and perpendicular to a side panel of the lock box, characterized in that: The invention comprises a guide piece fixedly arranged in the lock box and parallel to the side panel and a guide rod movably arranged on the guide piece and capable of reciprocating in a direction perpendicular to the guide piece, wherein an inclined tongue is rotatably arranged at one end of the guide rod toward the side panel, one end of the inclined tongue is located at the outside of the lock box, the end of the guide rod facing the inclined tongue is the upper end, and a boss abutting against the inner wall of the above-mentioned side panel is fixedly arranged on both sides of the end of the inclined tongue located in the lock box, the inclined tongue can flip around the bosses on both sides of the inclined tongue and the side panel abutment to push the guide rod to move inside the lock box and make the end of the inclined tongue located outside the lock box gradually rotate into the lock box, the guide rod is sleeved with a spring that drives the guide rod to move toward the side panel direction, and the lock box is provided with a locking mechanism for locking the guide rod; A rotating rod is fixedly provided at the upper end of the guide rod, and the length direction of the rotating rod is parallel to the guide piece. A rotating groove extending toward the inside of the inclined tongue is provided at the lower end of the inclined tongue. The rotating rod is clamped in the rotating groove so that the inclined tongue can rotate around the rotating rod. A stopper is fixedly provided at both sides of the upper end of the guide rod. A guide groove penetrating the inclined tongue and the rotating groove and cooperating with the stopper is provided at the lower end of the inclined tongue. The inclined tongue can rotate around the rotating rod so that the two ends of the guide groove are clamped on the stopper respectively. The lock mechanism comprises a locking plate rotatably arranged in the lock box, a slide plate movably arranged in the lock box and capable of reciprocating in a direction perpendicular to the side panel, and a shift fork driving the slide plate to move. The lower end of the guide rod is fixedly provided with a stop post, the locking plate comprises a vertical plate and a horizontal plate fixedly arranged at the lower end of the vertical plate and extending in a direction away from the side panel, the locking plate can be rotated about the connection between the horizontal plate and the vertical plate, the horizontal plate is located below the above-mentioned stop post, and a clamping groove is opened on the horizontal plate for clamping the above-mentioned stop post, the upper end of the vertical plate is fixedly provided with a toggle rod perpendicular to the vertical plate, the lower end of the slide plate is fixedly provided with a toggle hook for clamping on the toggle rod and driving the toggle rod to move in a direction away from the side panel, and a torsion spring is fixedly arranged in the lock box, which drives the end of the horizontal plate away from the side panel to rotate upward around the connection between the horizontal plate and the vertical plate and causes the clamping groove to clamp on the above-mentioned stop post.

2. A latch bolt mechanism according to claim 1, characterized in that: A limiting shoulder is fixedly provided at the upper ends of both ends of the guide groove, and the inclined tongue can rotate around the rotating rod so that the two limiting shoulders are respectively clamped on the above-mentioned block, and the plane where the two limiting shoulders are located gradually tilts toward the inclined surface from the plane on the inclined tongue to the inclined surface direction.

3. A latch bolt mechanism according to claim 1, characterized in that: The shift fork is rotatably arranged in the lock box via a rotating shaft, a sliding groove penetrating the slide plate is provided on the slide plate, the rotating shaft is inserted in the sliding groove, a stop groove penetrating the slide plate is provided on the slide plate, and a protrusion which is clamped in the stop groove is fixedly arranged at the lower end of the shift fork.

4. The latch bolt mechanism according to claim 1, characterized in that: A hook plate perpendicular to the horizontal plate is fixedly arranged on one end of the horizontal plate away from the vertical plate, and one end of the torsion spring is fixedly arranged on the hook plate.

5. The latch bolt mechanism according to claim 1, characterized in that: A rotating ring is sleeved on the blocking column, and the clamping groove on the horizontal plate is clamped on the rotating ring.

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