A latch with a convenient reversing function

Abstract

This utility model discloses a reversible latch, relating to the field of door lock accessories technology, for installation inside a lock housing. It includes a latch assembly and a reversing assembly. The latch assembly includes a latch tongue with a latch tongue boss, which is movably disposed within the lock housing. The reversing assembly includes a reversing block, which is movably disposed within the lock housing. One side of the reversing block has an upper sliding groove and a lower sliding groove from top to bottom. When the reversing block moves away from the latch tongue, causing the latch tongue boss to disengage from the upper sliding groove or lower sliding groove, the latch tongue can rotate. When the reversing block moves closer to the latch tongue, causing the latch tongue boss to be located in the upper sliding groove or lower sliding groove, the latch tongue cannot rotate, but the latch tongue can slide, allowing the latch tongue boss to slide within the upper sliding groove or lower sliding groove. This utility model achieves latch reversal without disassembling the lock housing, simplifying the process of reverse latch installation.

Description

Technical Field

[0001] This utility model relates to the field of door lock accessories technology, specifically a slanted latch that is easy to reverse. Background Technology

[0002] A door lock typically includes a lock housing and a latch installed inside the lock housing. The latch has a vertical sidewall that is perpendicular to the lock housing and an inclined sidewall that is inclined to the lock housing.

[0003] When the door is closed, the inclined sidewall contacts the door frame, causing the latch to retract into the lock housing. Therefore, when installing a door lock, the direction of the latch must be properly aligned with the door's orientation. If reverse installation is required, the door lock must be disassembled and the latch reassembled, making the installation process cumbersome and inconvenient; alternatively, replacing the door lock would be wasteful and inefficient. Utility Model Content

[0004] This utility model discloses a slanted tongue that is easy to change direction, so as to solve the technical problem of cumbersome slanted tongue reversal.

[0005] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution: A reversing latch for installation within a lock housing, comprising a latch assembly and a reversing assembly; The latch assembly includes a latch tongue, which is provided with a latch tongue boss and is movably disposed within the lock housing. The reversing assembly includes a reversing block, which is movably disposed within the lock housing. One side of the reversing block is provided with an upper sliding groove and a lower sliding groove from top to bottom. When the reversing block moves away from the oblique tongue, causing the oblique tongue boss to disengage from the upper or lower slide groove, the oblique tongue can rotate; when the reversing block moves closer to the oblique tongue, causing the oblique tongue boss to be located in the upper or lower slide groove, the oblique tongue cannot rotate, but the oblique tongue can slide, allowing the reversing block to slide within the upper or lower slide groove.

[0006] Furthermore, the tongue assembly also includes a connecting rod, and the tongue is rotatably connected to the connecting rod.

[0007] Furthermore, the oblique tongue is provided with a pivot, and the connecting rod is provided with a pivot hole. The pivot is inserted into the pivot hole so that the oblique tongue can rotate around the pivot as the center.

[0008] Furthermore, the latch assembly also includes a handle mechanism for connecting a handle; the handle mechanism is rotatably disposed within the lock housing and is used to push the connecting rod to retract the latch into the lock housing.

[0009] Furthermore, the handle mechanism is provided with a push bar, the connecting rod is provided with an auxiliary plate, and the push bar abuts against the auxiliary plate; When the handle mechanism is rotated, the push bar pushes the auxiliary plate, causing the tongue to retract into the lock housing.

[0010] Furthermore, the oblique tongue assembly also includes a first elastic element, which is used for resetting the connecting rod.

[0011] Furthermore, the reversing block is provided with a reversing boss, which protrudes outside the lock housing.

[0012] Furthermore, the commutation assembly also includes a fixed plate and a second elastic member, the second elastic member being located between the fixed plate and the commutation block, and the second elastic member being used for resetting the commutation block.

[0013] Furthermore, the reversing block is provided with a guide bar, and the fixing plate is provided with a guide groove; when the reversing block approaches the fixing plate, the guide bar slides in the guide groove.

[0014] The present invention has the following advantages over the prior art: The latch provided by this utility model is equipped with a latch tongue and a reversing block. By moving the reversing block away from the latch tongue, the latch tongue can rotate after the latch tongue boss disengages from the upper or lower slide groove. The latch tongue is rotated to the direction of the door installation. The reversing block is reset and moves closer to the latch tongue, so that the latch tongue boss is located in the upper or lower slide groove. At this time, the latch tongue can retract or extend from the lock housing. The reversing of the latch tongue is achieved without disassembling the lock housing, which simplifies the process of reverse installation of the latch tongue. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the oblique tongue of this utility model installed on the lock shell.

[0016] Figure 2 This is a schematic diagram of the oblique tongue structure of this utility model. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the oblique tongue structure of this utility model. Figure 2 .

[0018] In the diagram: 1. Slant tongue assembly; 2. Reversing assembly; 3. Slant tongue; 4. Slant tongue boss; 5. Reversing block; 6. Upper slide groove; 7. Lower slide groove; 8. Connecting rod; 9. Rotating shaft; 10. Rotating hole; 11. Handle mechanism; 12. Push bar; 13. Auxiliary plate; 14. First elastic element; 15. Reversing boss; 16. Fixing plate; 17. Second elastic element; 18. Guide bar; 19. Guide groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] See Figures 1-3 A reversing latch for installation inside a lock housing, comprising a latch assembly 1 and a reversing assembly 2; The latch assembly 1 includes a latch 3, the latch 3 is provided with a latch protrusion 4, and the latch 3 is movably disposed in the lock housing, specifically, it can slide to retract or extend from the lock housing; The reversing assembly 2 includes a reversing block 5, which is movably disposed in the lock housing. Specifically, it is slidable to move closer to or away from the tongue 3. One side of the reversing block 5 is provided with an upper sliding groove 6 and a lower sliding groove 7 from top to bottom. When the reversing block 5 moves away from the tongue 3, causing the tongue protrusion 4 to disengage from the upper slide groove 6 or the lower slide groove 7, the tongue 3 can rotate, thereby achieving reversal; when the reversing block 5 moves closer to the tongue 3, causing the tongue protrusion 4 to be located in the upper slide groove 6 or the lower slide groove 7, the tongue 3 cannot rotate, but the tongue 3 can slide, allowing the tongue protrusion 4 to slide within the upper slide groove 6 or the lower slide groove 7, thus retracting or extending the lock case to achieve opening or closing the door.

[0021] In this embodiment, the tongue assembly 1 further includes a connecting rod 8, and the tongue 3 is rotatably connected to the connecting rod 8. Specifically, when the tongue 3 is moved, the tongue 3 can rotate relative to the connecting rod 8, thereby changing the direction of the tongue.

[0022] In this embodiment, the tongue-and-groove 3 is provided with a pivot 9, and the connecting rod 8 is provided with a rotating hole 10. The pivot 9 is inserted into the rotating hole 10, allowing the tongue-and-groove 3 to rotate around the pivot 9 as the center. Specifically, the pivot 9 is located at the midpoint between the top surface of the tongue-and-groove 3 and the ground. It should be noted that the diameter of the rotating hole 10 is slightly larger than the diameter of the pivot 9, allowing the pivot 9 to be inserted into the rotating hole 10 and rotate within it, but not too loosely.

[0023] In this embodiment, the latch assembly further includes a handle mechanism for connecting a handle; the handle mechanism is rotatably disposed within the lock housing and is used to push the connecting rod, causing the latch to retract into the lock housing, thereby opening the door.

[0024] In this embodiment, the handle mechanism is provided with a push bar, and the connecting rod is provided with an auxiliary plate. The push bar abuts against the auxiliary plate. When the handle mechanism rotates, the push bar pushes the auxiliary plate to move in the opposite direction to the door frame. At this time, the connecting rod 8 and the tongue 3 both move in the opposite direction to the door frame, thereby causing the tongue 3 to retract into the lock case and achieve the function of unlocking.

[0025] In this embodiment, the latch assembly 1 further includes a first elastic element 14, which is used to reset the connecting rod 8. When the door is opened and the handle is released, the first elastic element 14 resets and causes the latch 3 to extend out of the lock housing.

[0026] To further explain, the shape of the first elastic element 14 can be selected in various ways to help the connecting rod 8 return to its original position. For example, it can be a spring or a torsion spring. When the first elastic element 14 is a spring, the spring is fitted onto the connecting rod 8. When the latch 3 extends out of the lock housing, the spring is in its normal state. When the latch 3 retracts into the lock housing, the spring is compressed. When the first spring is a torsion spring, the middle of the torsion spring is fitted onto the shaft of the lock housing, one end is fitted onto the auxiliary plate 13, and the other end is connected to or abuts against the lock housing. When the latch 3 extends out of the lock housing, the torsion spring is in its normal state. When the latch 3 retracts into the lock housing, the torsion spring is twisted.

[0027] In this embodiment, the reversing block 5 is provided with a reversing boss 15, which protrudes outside the lock housing. When it is necessary to reverse the latch, the reversing boss 15 can be manually moved directly outside the lock housing without disassembling the lock housing. Specifically, the reversing boss 15 is moved away from the latch 3, so that the reversing block 5 is away from the latch 3. At this time, the latch boss 4 disengages from the upper slide groove 6 or the lower slide groove 7, and the latch 3 can be rotated to achieve reversal.

[0028] In this embodiment, the commutation assembly 2 further includes a fixed plate 16 and a second elastic element 17. The second elastic element 17 is located between the fixed plate 16 and the commutation block 5, and is used to reset the commutation block 5. When the commutation block 5 moves away from the tongue 3, it moves closer to the fixed plate 16. At this time, the second elastic element 17 is compressed. When the commutation is completed and the commutation block 5 is released, the rebound force of the second elastic element 17 can reset the commutation block 5.

[0029] In this embodiment, the reversing block 5 is provided with a guide strip 18, and the fixing plate 16 is provided with a guide groove 19; when the reversing block 5 approaches the fixing plate 16, the guide strip 18 slides within the guide groove 19. When the reversing block 5 moves closer to or further away from the fixing plate 16, the guide groove 19 guides the guide strip 18.

[0030] The method for reversing the oblique tongue is as follows: the oblique tongue 3 is provided with a first side wall and a second side wall. The initial installation state of the oblique tongue 3 is that the first side wall is perpendicular to the lock housing and the second side wall is inclined to the lock housing. At this time, the oblique tongue boss 4 is located in the upper slide groove 6. First, manually move the reversing boss 15 to move the reversing block 5 away from the tongue 3. At this time, the tongue boss 4 of the tongue 3 disengages from the upper slide groove 6. Then, manually move the tongue 3 to rotate it, specifically by moving it upwards. The tongue 3 rotates around the pivot 9. At this time, the second side wall rotates to be inclined to the lock housing, then rotates to be perpendicular to the lock housing, and the tongue boss 4 moves to the corresponding position in the lower slide groove 7. Finally, release the reversing boss 15. The reversing block 5 resets under the action of the second elastic element 17. That is, the reversing block 5 moves closer to the tongue 3 so that the tongue boss 4 is located in the lower slide groove 7, thus completing the reversing. At this time, the tongue 3 can retract into the lock housing due to the pressure of the door frame, and the tongue boss 4 slides in the lower slide groove 7.

[0031] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A slanted latch for easy reversing, used for installation within a lock housing, characterized in that, Including the latch assembly and the commutator assembly; The latch assembly includes a latch tongue, which is provided with a latch tongue boss and is movably disposed within the lock housing. The reversing assembly includes a reversing block, which is movably disposed within the lock housing. One side of the reversing block is provided with an upper sliding groove and a lower sliding groove from top to bottom. When the reversing block moves away from the oblique tongue, causing the oblique tongue boss to disengage from the upper or lower slide groove, the oblique tongue can rotate; when the reversing block moves closer to the oblique tongue, causing the oblique tongue boss to be located in the upper or lower slide groove, the oblique tongue cannot rotate, but the oblique tongue can slide, causing the oblique tongue boss to slide within the upper or lower slide groove.

2. The oblique tongue for easy reversing according to claim 1, characterized in that, The tongue assembly also includes a connecting rod, and the tongue is rotatably connected to the connecting rod.

3. The oblique tongue for easy reversing according to claim 2, characterized in that, The tongue is provided with a pivot, and the connecting rod is provided with a pivot hole. The pivot is inserted into the pivot hole so that the tongue can rotate around the pivot.

4. A directional tongue according to claim 2 or 3, characterized in that, The latch assembly also includes a handle mechanism for connecting a handle; the handle mechanism is rotatably disposed within the lock housing and is used to push the connecting rod to retract the latch into the lock housing.

5. A slanted tongue for easy reversing according to claim 4, characterized in that, The handle mechanism is provided with a push bar, the connecting rod is provided with an auxiliary plate, and the push bar abuts against the auxiliary plate; When the handle mechanism is rotated, the push bar pushes the auxiliary plate, causing the tongue to retract into the lock housing.

6. A slanted tongue for easy reversing according to claim 2 or 3, characterized in that, The tongue assembly further includes a first elastic element, which is used to reset the connecting rod.

7. A slanted tongue for easy reversing according to claim 1, characterized in that, The reversing block is provided with a reversing boss, which protrudes outside the lock housing.

8. A slanted tongue for easy reversing according to claim 1, characterized in that, The commutation assembly further includes a fixed plate and a second elastic member, the second elastic member being located between the fixed plate and the commutation block, and the second elastic member being used for resetting the commutation block.

9. A slanted tongue for easy reversing according to claim 8, characterized in that, The reversing block is provided with a guide bar, and the fixing plate is provided with a guide groove; when the reversing block approaches the fixing plate, the guide bar slides in the guide groove.

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