Oblique latch tongue structure and door lock

Abstract

The present invention relates to the technical field of door locks, and discloses an inclined lock tongue structure and a door lock. The inclined lock tongue structure includes a connecting rod, an inclined lock tongue and a locking member. The inclined lock tongue is rotatably connected to one end of the connecting rod. A through hole is provided inside the locking member, and the locking member is slidably sleeved on the outer periphery of the connecting rod through the through hole. Wherein, the locking member has a locking position close to the inclined lock tongue and limiting the rotation of the inclined lock tongue, and a first unlocking position far from the inclined lock tongue and rotatably cooperating with the connecting rod in the circumferential direction. When the locking member is in the first unlocking position, it is adapted to rotate a preset angle to complete the commutation of the inclined lock tongue structure. The inclined lock tongue structure provided by the present invention can commutate the inclined lock tongue through the locking member, so as to facilitate the realization of left-opening or right-opening of the door lock.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and particularly to an inclined locking tongue structure and a door lock. Background Art

[0002] For a door body, usually one side is hinged to a door frame, and the other side is provided with a door lock to lock the movable other side to the door frame through the door lock. The door lock is usually provided with an inclined locking tongue structure. The inclined locking tongue structure is usually movably connected within a lock case of the door lock, and one end of the inclined locking tongue is telescopically arranged at a side strip of the lock case. When opening the door, one end of the inclined locking tongue structure retracts into the side strip under the drive of a mechanical key or a door handle. When closing the door, one end of the inclined locking tongue structure retracts into the side strip by friction between its own inclined surface and the door frame; therefore, the inclined surface of the inclined locking tongue structure needs to be arranged towards the door closing direction.

[0003] Among common door bodies in life, for some door bodies, the door lock and the door handle are installed on the left side of the door body, and for some door bodies, the door lock and the door handle are installed on the right side of the door body. However, due to the inclined surface of the inclined locking tongue structure, the door lock installed on the left side of the door body cannot be installed on the right side of the door body. Therefore, the door locks installed on the left side and the right side of the door body are not interchangeable, which brings a lot of inconvenience to the purchase and assembly for staff and users. Summary of the Invention

[0004] In view of this, the present invention provides an inclined locking tongue structure and a door lock to solve the problem that the door locks installed on the left side and the right side of the door body are not interchangeable.

[0005] In a first aspect, the present invention provides an inclined locking tongue structure, including a connecting rod, an inclined locking tongue, and a locking member. The inclined locking tongue is rotatably connected to one end of the connecting rod; a through hole is provided inside the locking member, and the locking member is slidably sleeved on the outer periphery of the connecting rod through the through hole; wherein, the locking member has a locking position close to the inclined locking tongue and limiting the rotation of the inclined locking tongue, and a first unlocking position away from the inclined locking tongue and rotatably cooperating with the connecting rod in the circumferential direction; when the locking member is in the first unlocking position, it is adapted to rotate a preset angle to complete the commutation of the inclined locking tongue structure.

[0006] Beneficial effects: When the locking member is in the locked position, the function of the inclined locking tongue is the same as that of a common inclined locking tongue. It can automatically retract into the lock case when the door is closed, and needs to retract into the lock case under the driving force of a mechanical key, a motor or a door handle when the door is opened. When the locking member is in the first unlocking position, the locking member is rotatably engaged with the connecting rod in the circumferential direction. At this time, the locking member is rotated by a preset angle. When the rotated locking member returns to the locked position again, the inclined locking tongue can be restored to a common inclined locking tongue, and the working direction of the inclined locking tongue can be changed, so that the door lock can be assembled on the left side of the door body or on the right side of the door body, enabling the door lock to be used for left-opening or right-opening doors, expanding the application range of the door lock, simplifying the assembly of the door lock, and preventing staff and users from being unable to correctly assemble the door lock due to incorrect purchase. The preset angle is preferably 180°, or it can be other angles. The specific preset angle is determined according to the limiting relationship between the locking member and the inclined locking tongue.

[0007] In an alternative embodiment, the locking member further has a second unlocking position away from the inclined locking tongue and fixedly engaged with the connecting rod in the circumferential direction; the inclined locking tongue structure further includes a guiding and limiting portion and a mating portion. The guiding and limiting portion is disposed on the outer peripheral wall of the connecting rod and close to the inclined locking tongue; the mating portion is disposed on the through hole and is adapted to slidably cooperate with the guiding and limiting portion in the axial direction of the connecting rod and is adapted to be mutually limited with the guiding and limiting portion in the circumferential direction of the connecting rod; wherein, when the locking member is in the locked position and the second unlocking position, the guiding and limiting portion cooperates with the mating portion; when the locking member is in the first unlocking position, the guiding and limiting portion is separated from the mating portion, and the locking member is adapted to rotate by a preset angle for commutation.

[0008] Beneficial effects: When the locking member is in the first unlocking position and the second unlocking position, the locking member is away from the inclined locking tongue, and the inclined locking tongue can be flipped relative to the end of the connecting rod. At this time, when the door is opened or closed, the inclined locking tongue will retract into the lock case; and the unlocking force is reduced under the same load, power consumption is saved, and customer complaints are reduced. The setting of the guiding and limiting portion and the mating portion enables the locking member not to rotate relatively when in the locked position and the second unlocking position, ensuring the smoothness of the switching of the locking member between the locked position and the second unlocking position. And when in the first unlocking position, the guiding and limiting portion is separated from the mating portion, which can ensure the smooth relative rotation between the locking member and the connecting rod, facilitating the commutation of the inclined locking tongue device.

[0009] In an alternative embodiment, the guiding and limiting portion is a rectangular convex portion protruding from the outer circumference of the connecting rod, and the through hole includes a rectangular hole section, and the rectangular hole section slidably cooperates with the rectangular convex portion.

[0010] Beneficial effect: The setting of the rectangular protrusion and the rectangular hole section can not only achieve sliding fit, but also prevent the locking piece from rotating relative to the connecting rod. The protruding rectangular protrusion can also buffer the movement of the locking piece toward the oblique lock tongue, preventing the locking piece from colliding and damaging the oblique lock tongue.

[0011] In an optional embodiment, the connecting rod is a round rod, the through hole also includes a circular hole segment, and the circular hole segment is rotatably slidably matched with the connecting rod; the rectangular hole segment is connected to the circular hole segment and is arranged at a position close to the oblique locking tongue.

[0012] Beneficial effect: the round rod can be slidably matched with the round hole section and can also be rotatably connected without skewing or shaking in the axial direction.

[0013] In an optional embodiment, a first elastic member is further included, which is arranged between the locking member and the other end of the connecting rod to provide an elastic force for the locking member to return to the locking position.

[0014] In an optional embodiment, two flipping inclined surfaces are symmetrically provided at one end of the oblique lock tongue facing away from the connecting rod, and the two flipping inclined surfaces are respectively arranged on both sides of the oblique lock tongue along the flipping direction to form a cone structure.

[0015] In an optional embodiment, a rotating portion is provided at one end of the connecting rod, a receiving space is provided on the oblique locking tongue, and the rotating portion is rotatably connected in the receiving space.

[0016] In an optional embodiment, a locking protrusion is provided on the end surface of the locking member facing the oblique lock tongue, and a limiting groove is provided on one end of the oblique lock tongue facing the locking member; when the locking member is in the locking position, the locking protrusion extends into the limiting groove.

[0017] Beneficial effect: the locking protrusion extends into the limiting groove, and when the inclined lock tongue is turned over by force, the movement of the inclined lock tongue can be limited by the groove wall of the limiting groove, so that the inclined lock tongue becomes a common inclined lock tongue.

[0018] In an optional embodiment, a locking surface is provided on one side of the locking protrusion; when the locking member is in the locking position, the locking surface is suitable for abutting against the groove wall of the limiting groove to lock the oblique locking tongue.

[0019] Beneficial effect: when the locking piece is in the locking position, the oblique lock tongue flips forward so that the locking surface can abut against the groove wall of the limiting groove, and the locking surface can limit the oblique lock tongue to continue flipping, so that the side of the oblique lock tongue facing away from the locking surface forms a right-angled side of an ordinary oblique lock tongue; when the oblique lock tongue flips backward, it can be used normally as an ordinary oblique lock tongue.

[0020] In an alternative embodiment, there are two locking bumps, which are respectively arranged on both sides of the through hole.

[0021] In an alternative embodiment, it further includes an unlocking dial and a pushing member; the unlocking dial is rotatably arranged on the side of the connecting rod; it is adapted to rotate under the drive of a mechanical key, a motor or a door handle; one end of the pushing member cooperates with the locking member, and the other end cooperates with the unlocking dial, and is adapted to drive the locking member to move to the second unlocking position under the drive of the unlocking dial.

[0022] In a second aspect, the present invention further provides a door lock, which includes the above-mentioned inclined locking tongue structure and a lock case. The inclined locking tongue structure is movably arranged in the lock case, and at least one side wall of the lock case is provided with an opening, and the locking member is movably arranged at the opening.

[0023] Beneficial effects: Before installing the door lock, the installation direction of the inclined locking tongue structure can be judged according to the installation position of the door lock on the door body. If it is necessary to change the direction of the inclined locking tongue structure, the locking member can be toggled away from the inclined locking tongue to the first unlocking position through the opening, and then the locking member is driven to rotate relative to the connecting rod. After rotating 180°, the commutation of the inclined locking tongue is completed. After the locking member can be reset to the locking position, the door lock can be installed. After the door lock is installed, the opening is blocked by the door body and will not be exposed.

[0024] In an alternative embodiment, it further includes a second elastic member, which is arranged between the inclined locking tongue structure and the lock case, and provides an elastic acting force for the inclined locking tongue structure to move towards the outside of the lock case. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a partial schematic view of an inclined locking tongue structure according to an embodiment of the present invention;

[0027] Figure 2 It is a partial exploded view of an inclined locking tongue structure according to an embodiment of the present invention;

[0028] Figure 3 It is a schematic view of a locking member according to an embodiment of the present invention;

[0029] Figure 4 It is a schematic view of an inclined locking tongue according to an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the connecting rod according to an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of an inclined locking tongue structure according to an embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the door lock according to an embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the first perspective of the door lock (hiding part of the lock case) according to an embodiment of the present invention;

[0034] Figure 9 Schematic diagram of the second perspective of the door lock (hiding part of the lock case) according to an embodiment of the present invention.

[0035] Explanation of reference numerals:

[0036] 1. Connecting rod; 11. Rotating part; 2. Inclined locking tongue; 21. Limiting groove; 22. Flipping inclined surface; 23. Accommodating space; 3. Locking member; 31. Locking protrusion; 32. Locking surface; 33. Relief surface; 34. Limiting flange; 4. Guiding and limiting part; 5. Matching part; 6. First elastic member; 7. Unlocking dial; 8. Pushing member; 9. Limiting plate; 100. Inclined locking tongue structure; 200. Lock case; 201. Opening; 300. Second elastic member; 400. Door handle dial; 500. Driving assembly. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present invention.

[0038] Normally, when opening the door, the inclined locking tongue 2 of the door lock needs to be retracted into the lock case 200 of the door lock under the drive of a mechanical key, a motor, or a door handle; when closing the door, the inclined locking tongue 2 of the door lock can automatically retract into the lock case 200 by rubbing against the door frame.

[0039] In the related art, when the door lock installed on the left side of the door body is modified to the right side of the door body, or when the door lock installed on the right side of the door body is modified to the left side of the door body, in order to align with the door frame lock groove on the door frame, it is usually necessary to rotate the entire door lock 180° around the vertical axis; however, after such rotation, the direction of the inclined locking tongue 2 of the door lock changes. When closing the door, the inclined locking tongue 2 of the door lock cannot automatically retract, and when opening the door, the inclined locking tongue 2 of the door lock can be opened randomly, failing to play the role of the inclined locking tongue 2.

[0040] The following will describe embodiments of the present invention in conjunction with Figures 1 to 9 to describe embodiments of the present invention.

[0041] Among them, Figure 1 a is a schematic diagram of the inclined lock tongue structure 100 when the locking member 3 is in the locked position; Figure 1 b is a schematic diagram of the inclined lock tongue structure 100 when the locking member 3 is in the second unlocking position; Figure 1 c is a schematic diagram of the inclined lock tongue structure 100 from the first perspective when the locking member 3 is in the first unlocking position; Figure 1 d is a schematic diagram of the inclined lock tongue structure 100 from the second perspective when the locking member 3 is in the first unlocking position; Figure 1 e is a schematic diagram of the inclined lock tongue structure 100 from the third perspective when the locking member 3 is in the first unlocking position; Figure 2 is an exploded view of the inclined lock tongue structure 100; Figure 3 a is a schematic diagram of the locking member 3 from the first perspective; Figure 3 b is a schematic diagram of the locking member 3 from the second perspective; Figure 4 a is a schematic diagram of the inclined lock tongue 2 from the first perspective; Figure 4 b is a schematic diagram of the inclined lock tongue 2 from the second perspective; Figure 5 a is a schematic diagram of the connecting rod 1 from the first perspective; Figure 5 b is a schematic diagram of the connecting rod 1 from the second perspective; Figure 6 is a schematic diagram of an inclined lock tongue structure 100 according to an embodiment of the present invention; Figure 7 is a schematic diagram of a door lock according to an embodiment of the present invention, when the locking member 3 in the figure is in the first unlocking position; Figure 8 is a schematic diagram of the first perspective of a door lock (hiding part of the lock case 200) according to an embodiment of the present invention, when the locking member 3 in the figure is in the locked position; Figure 9 is a schematic diagram of the second perspective of a door lock (hiding part of the lock case 200) according to an embodiment of the present invention, when the locking member 3 in the figure is in the first unlocking position.

[0042] According to an embodiment of the present invention, on the one hand, an inclined lock tongue structure 100 is provided, including a connecting rod 1, an inclined lock tongue 2 and a locking member 3. The inclined lock tongue 2 is rotatably connected to one end of the connecting rod 1; a through hole is provided inside the locking member 3, and the locking member 3 is slidably sleeved on the outer periphery of the connecting rod 1 through the through hole; wherein, the locking member 3 has a locked position close to the inclined lock tongue 2 and limiting the rotation of the inclined lock tongue 2, and a first unlocking position away from the inclined lock tongue 2 and rotatably cooperating with the connecting rod 1 in the circumferential direction; when the locking member 3 is in the first unlocking position, it is adapted to rotate a preset angle to complete the commutation of the inclined lock tongue structure 100.

[0043] When the locking member 3 is in the locked position, the function of the diagonal locking tongue 2 is the same as that of a normal diagonal locking tongue 2. It can automatically retract into the lock housing 200 when closing the door, and needs to be retracted into the lock housing 200 under the driving force of a mechanical key, a motor or a door handle when opening the door. When the locking member 3 is in the first unlocking position, the locking member 3 is rotatably engaged with the connecting rod 1 in the circumferential direction. At this time, the locking member 3 is rotated by a preset angle. When the rotated locking member 3 returns to the locked position again, the diagonal locking tongue 2 can be restored to a normal diagonal locking tongue 2, and at the same time, the working direction of the diagonal locking tongue 2 can be changed, so that the door lock can be assembled on the left side of the door body or on the right side of the door body, enabling the door lock to be used for left-opening or right-opening doors, expanding the application range of the door lock, simplifying the assembly of the door lock, and preventing staff and users from being unable to correctly assemble the door lock due to incorrect purchase. The preset angle is preferably 180°, and can also be other angles. The specific preset angle is determined according to the limiting relationship between the locking member and the diagonal locking tongue.

[0044] In one embodiment, the locking member 3 further has a second unlocking position away from the diagonal locking tongue 2 and fixedly engaged with the connecting rod 1 in the circumferential direction; the diagonal locking tongue structure 100 further includes a guiding and limiting portion 4 and a cooperating portion 5. The guiding and limiting portion 4 is disposed on the outer peripheral wall of the connecting rod 1 and is close to the diagonal locking tongue 2; the cooperating portion 5 is disposed on the through hole and is adapted to slidably cooperate with the guiding and limiting portion 4 in the axial direction of the connecting rod 1 and is adapted to be mutually limited with the guiding and limiting portion 4 in the circumferential direction of the connecting rod 1; wherein, when the locking member 3 is in the locked position and the second unlocking position, the guiding and limiting portion 4 cooperates with the cooperating portion 5; when the locking member 3 is in the first unlocking position, the guiding and limiting portion 4 is separated from the cooperating portion 5, and the locking member is adapted to rotate by a preset angle for commutation, and the preset angle is 180°.

[0045] When the locking member 3 is in the first unlocking position and the second unlocking position, the locking member 3 is away from the diagonal locking tongue 2, and the diagonal locking tongue 2 can be flipped relative to the end of the connecting rod 1. At this time, when opening or closing the door, the diagonal locking tongue 2 will retract into the lock housing 200; and the unlocking force is reduced under the same load, power consumption is saved, and customer complaints are reduced. The setting of the guiding and limiting portion 4 and the cooperating portion 5 makes the locking member 3 not rotate relatively when in the locked position and the second unlocking position, ensuring the smoothness of the switching of the locking member 3 between the locked position and the second unlocking position. And in the first unlocking position, the guiding and limiting portion 4 is separated from the cooperating portion 5, which can ensure the smooth relative rotation between the locking member 3 and the connecting rod 1, facilitating the commutation of the diagonal locking tongue 2 device.

[0046] The diagonal locking tongue 2 of the traditional intelligent door lock is a triangular tongue. When the motor automatically drives to unlock on the rear panel, the triangular tongue will be subjected to forces such as the rebounding force of the door seal strip and the wind resistance. A relatively large pressure will be exerted on the right-angled side of the triangular tongue, resulting in an increase in the torque for the motor to unlock. When the torque is greater than the driving torque of the motor, the diagonal locking tongue 2 cannot retract into the lock housing 200. In the diagonal locking tongue structure 100 provided in this embodiment, the diagonal locking tongue 2 is rotatably connected to one end of the connecting rod 1. The motor only needs to provide a relatively small torque before unlocking to move the locking member 3 from the locked position to the second unlocking position. At this time, when pushing the door, the diagonal locking tongue 2 will be subjected to forces such as the rebounding force of the door seal strip and the wind resistance, and will rotate relative to the connecting rod 1 and retract into the lock housing 200 when stressed, and a relatively small pushing force can open the door.

[0047] In one embodiment, the guiding and limiting portion 4 is a rectangular convex portion protruding from the outer periphery of the connecting rod 1, and the through hole includes a rectangular hole section, and the rectangular hole section is slidably engaged with the rectangular convex portion.

[0048] Beneficial effects: The setting of the rectangular convex portion and the rectangular hole section can not only achieve sliding fit, but also prevent the locking member 3 from rotating relative to the connecting rod 1. The protruding rectangular convex portion can also buffer the movement of the locking member 3 towards the diagonal locking tongue 2, preventing the locking member 3 from hitting and damaging the diagonal locking tongue 2.

[0049] As a changeable implementation manner, the guiding and limiting portion 4 can be a sliding convex strip protruding from the outer periphery of the connecting rod 1, the sliding convex strip extends along the axial direction of the connecting rod 1, the matching portion 5 is a sliding groove opened on the inner wall of the through hole of the locking member 3, the sliding convex strip is arranged close to the diagonal locking tongue 2 and is slidably engaged with the sliding groove. Or, the guiding and limiting portion 4 is a sliding groove arranged on the outer periphery of the connecting rod 1, the matching portion 5 is a sliding convex strip protruding from the inner wall of the through hole, the sliding groove is arranged close to the diagonal locking tongue 2 and is slidably engaged with the sliding convex strip.

[0050] In one embodiment, the connecting rod 1 is a round rod, the through hole further includes a circular hole section, and the circular hole section is slidably and rotatably engaged with the connecting rod 1; the rectangular hole section communicates with the circular hole section and is arranged at a position close to the diagonal locking tongue 2.

[0051] The round rod can be slidably and rotatably connected with the circular hole section, and there will be no skewing and shaking in the axial direction.

[0052] In one embodiment, a first elastic member 6 is further included, which is arranged between the locking member 3 and the other end of the connecting rod 1 to provide an elastic acting force for the locking member 3 to reset to the locked position. When the door opening is completed and the door handle, the motor or the mechanical key no longer provides the unlocking driving force, the first elastic member 6 can drive the locking member 3 to move towards the diagonal locking tongue 2 through its own elastic acting force to reset the locking member 3 to the locked position.

[0053] Specifically, the oblique lock tongue structure 100 also includes a limit plate 9, which is connected to the end of the connecting rod 1 away from the oblique lock tongue 2, and the end of the locking member 3 away from the oblique lock tongue 2 is provided with a limit flange 34, and the first elastic member 6 is arranged between the limit flange 34 and the limit plate 9. In a preferred embodiment, the first elastic member 6 is a spring, which is sleeved on the outer periphery of the connecting rod 1 and is arranged between the limit flange 34 and the limit plate 9. When the first elastic member 6 is in a natural state, the locking member 3 is in a locked position. The limit plate 9 can be sleeved on the outer periphery of the connecting rod 1, or it can be integrally formed on the connecting rod 1. In a preferred embodiment, protrusions are respectively provided on both sides of the limit plate 9, and a long groove is correspondingly provided on the lock housing 200 of the door lock, and the protrusion is slidably arranged in the long groove to limit the limit plate 9.

[0054] In one embodiment, two flipping inclined surfaces 22 are symmetrically provided at one end of the oblique lock tongue 2 facing away from the connecting rod 1 . The two flipping inclined surfaces 22 are respectively provided on both sides of the oblique lock tongue 2 along the flipping direction to form a cone structure.

[0055] Both flip slopes 22 can be subjected to force to drive the oblique lock tongue structure 100 to retract into the lock housing 200, so that even if the oblique lock tongue structure 100 is reversed, the corresponding flip slope 22 can be used as the slope of the common oblique lock tongue 2.

[0056] Specifically, an arc-shaped transition surface is provided at the tip of the cone-shaped structure to prevent sharp edges from scratching the door frame and users.

[0057] In one embodiment, a rotating portion 11 is provided at one end of the connecting rod 1 , and an accommodating space 23 is provided on the oblique locking tongue 2 . The rotating portion 11 is rotatably connected in the accommodating space 23 .

[0058] The arrangement of the rotating portion 11 and the accommodating space 23 can realize the flip connection between the connecting rod 1 and the oblique locking tongue 2. Specifically, the rotating portion 11 is arranged at the end of the connecting rod 1, and is a semicircular arc surface, which can be easily rotated in the accommodating space 23. The accommodating space 23 can be a semicircular arc groove matching the rotating portion 11, or a conical groove.

[0059] Specifically, the accommodating space 23 can be arranged in the middle position of the oblique locking tongue 2 so that the oblique locking tongue 2 is subjected to uniform force.

[0060] In one embodiment, a locking protrusion 31 is provided on the end surface of the locking member 3 facing the oblique lock tongue 2, and a limiting groove 21 is provided on one end of the oblique lock tongue 2 facing the locking member 3; when the locking member 3 is in the locked position, the locking protrusion 31 extends into the limiting groove 21. Specifically, a connecting ear is provided on the side of the locking member 3 protruding in a direction away from the connecting rod 1, and the locking protrusion 31 is protrudingly arranged on the connecting ear, so that the through hole can be avoided, so that the through hole and the locking protrusion 31 do not interfere with each other.

[0061] The locking bump 31 extends into the limiting groove 21, and can limit the movement of the inclined locking tongue 2 through the groove wall of the limiting groove 21 when the inclined locking tongue 2 is stressed and flipped, so that the inclined locking tongue 2 becomes an ordinary inclined locking tongue 2.

[0062] As a transformable implementation manner, it can also be that one end of the locking member 3 facing the inclined locking tongue 2 is provided with a limiting groove 21, and one end of the inclined locking tongue 2 facing the locking member 3 is provided with a locking bump 31. When the locking member 3 is in the locking position, the locking bump 31 extends into the limiting groove 21.

[0063] In one embodiment, a locking surface 32 is provided on one side of the locking bump 31; when the locking member 3 is in the locking position, the locking surface 32 is adapted to abut against the groove wall of the limiting groove 21 to lock the inclined locking tongue 2.

[0064] When the locking member 3 is in the locking position, when the inclined locking tongue 2 is flipped forward so that the locking surface 32 can abut against the groove wall of the limiting groove 21, the locking surface 32 can limit the further flipping of the inclined locking tongue 2, so that a right-angled side of an ordinary inclined locking tongue 2 is formed on the side of the inclined locking tongue 2 facing away from the locking surface 32; when the inclined locking tongue 2 is flipped backward, it can be used normally as an ordinary inclined locking tongue 2.

[0065] Specifically, a relief surface 33 is further provided on the other side of the locking bump 31, which can avoid the limiting groove 21 when the locking member 3 is in the locking position, so that the inclined locking tongue 2 can only be flipped to one side.

[0066] In one embodiment, there are two locking bumps 31, which are respectively arranged on both sides of the through hole.

[0067] In one embodiment, it further includes an unlocking dial 7 and a pushing member 8; the unlocking dial 7 is rotatably arranged on the side of the connecting rod 1; it is adapted to rotate under the drive of a mechanical key or a motor or a door handle; one end of the pushing member 8 is matched with the locking member 3, and the other end is matched with the unlocking dial 7, and is adapted to drive the locking member 3 to move to the second unlocking position under the drive of the unlocking dial 7.

[0068] When a mechanical key or a motor or a door handle provides a driving force, it is transmitted to one end of the unlocking dial 7 through a transmission assembly to drive the unlocking dial 7 to rotate. The rotation shaft of the unlocking dial 7 is arranged between the two ends, and the other end of the unlocking dial 7 will move in the opposite direction, and drive the pushing member 8 to move away from the inclined locking tongue 2 to drive the locking member 3 to move away from the inclined locking tongue 2 and move from the locking position to the second unlocking position. When the locking member 3 is in the second unlocking position, the inclined locking tongue 2 is in a freely flippable active state, and the door body can be opened by pushing the door body.

[0069] Specifically, the unlocking paddle 7 can be coaxially connected to the door handle dial 400 and rotate along with the door handle. The unlocking paddle 7 can be connected to the driving assembly 500 through the latch tongue linkage piece. The driving assembly 500 is connected to both the motor and the lock head dial, and can rotate under the drive of the motor or the mechanical key, and drive the unlocking paddle 7 to rotate through the latch tongue linkage piece. The pushing member 8 includes a first plate body, and a second plate body and a third plate body connected to both ends of the first plate body. The second plate body is connected to the locking member 3 or abuts against the limiting flange 34 of the locking member 3. The third plate body is disposed at a position away from the diagonal locking tongue 2, and the third plate body abuts against one end of the unlocking paddle 7. Both the second plate body and the third plate body are provided with sliding protrusions, and two sliding grooves are correspondingly provided on the lock case 200, and the two sliding protrusions are respectively slidably connected to the two sliding grooves. Alternatively, a sliding protrusion protrudes from the side of the first plate body, and a sliding groove is correspondingly provided on the lock case 200, and the sliding protrusion is slidably disposed in the sliding groove.

[0070] According to an embodiment of the present invention, on the other hand, a door lock is further provided, including the above-mentioned diagonal locking tongue structure 100 and the lock case 200. The diagonal locking tongue structure 100 is movably disposed in the lock case 200, and an opening 201 is provided on at least one side wall of the lock case 200, and the locking member 3 is movably disposed at the opening 201.

[0071] Before the door lock is installed, the installation direction of the diagonal locking tongue structure 100 can be judged according to the installation position of the door lock on the door body. If it is necessary to change the direction of the diagonal locking tongue structure 100, the locking member 3 can be toggled away from the diagonal locking tongue 2 to the first unlocking position through the opening 201, and then the locking member 3 is driven to rotate relative to the connecting rod 1. After rotating 180°, the commutation of the diagonal locking tongue 2 is completed. After the locking member 3 is reset to the locking position, the door lock can be installed. After the door lock is installed, the opening 201 is blocked by the door body and will not be exposed.

[0072] In one embodiment, a second elastic member 300 is further included, which is disposed between the diagonal locking tongue structure 100 and the lock case 200, and provides an elastic acting force for the diagonal locking tongue structure 100 to move outward of the lock case 200.

[0073] The setting of the second elastic member 300 enables the diagonal locking tongue 2 assembly retracted into the lock case 200 to automatically reset after the pressure disappears, and the diagonal locking tongue 2 extends out of the lock case 200.

[0074] Specifically, the second elastic member 300 is disposed between the end of the connecting rod 1 away from the diagonal locking tongue 2 and the lock case 200. An abutting portion protrudes from the outer periphery of the connecting rod 1 away from the diagonal locking tongue 2, and a convex column protrudes from the lock case 200. The second elastic member 300 is a spring, one end of which is sleeved on the end of the connecting rod 1 away from the diagonal locking tongue 2 and abuts against the abutting portion, and the other end is sleeved on the outer periphery of the convex column and abuts against the lock case 200. The abutting portion can have two symmetrically arranged ones, or at least three arranged along the circumference, or can be annular.

[0075] The commutation process of the structure of the diagonal locking tongue 2 of the door lock provided in this embodiment includes: moving the locking member 3 away from the diagonal locking tongue 2 through the opening 201. After moving the locking member 3 to the first unlocking position, rotating the locking member 3 by 180°, and releasing the locking member 3 to complete the commutation of the structure of the diagonal locking tongue 2.

[0076] The unlocking process of the door lock provided in this embodiment includes: providing a driving force for the driving assembly 500 through a mechanical key or a motor. After the main locking tongue assembly is driven to unlock for a period of time or during the unlocking process of the main locking tongue assembly, driving the unlocking dial 7 to rotate. The rotating unlocking dial 7 drives the pushing member 8 to move away from the diagonal locking tongue 2. The pushing member 8 drives the locking member 3 to move to the second unlocking position. At this time, pushing the door body can retract the diagonal locking tongue 2 into the lock housing 200 to open the door.

[0077] When the door handle or the mechanical key is released after unlocking, the locking member 3 returns to the locking position under the elastic force of the first elastic member 6, and the structure of the diagonal locking tongue 2 extends out of the lock housing 200 under the elastic force of the second elastic member 300.

[0078] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An inclined locking tongue structure (100), characterized in that Comprising: Connecting rod (1); Oblique locking tongue (2), rotatably connected to one end of the connecting rod (1); Locking member (3), having a through hole inside, and the locking member (3) is slidably sleeved on the outer periphery of the connecting rod (1) through the through hole; Wherein, the locking member (3) has a locking position close to the oblique locking tongue (2) and limiting the rotation of the oblique locking tongue (2), and a first unlocking position away from the oblique locking tongue (2) and rotatably cooperating with the connecting rod (1) in the circumferential direction; when the locking member (3) is in the first unlocking position, it is adapted to rotate a preset angle to complete the commutation of the oblique locking tongue structure (100).

2. The inclined locking tongue structure (100) according to claim 1, characterized in that, The locking member (3) further has a second unlocking position away from the oblique locking tongue (2) and being fixed to the connecting rod (1) in the circumferential direction; the oblique locking tongue structure (100) further includes: Guiding and limiting portion (4), arranged on the outer peripheral wall of the connecting rod (1) and close to the oblique locking tongue (2); Fitting portion (5), arranged on the through hole, adapted to slidably cooperate with the guiding and limiting portion (4) in the axial direction of the connecting rod (1), and adapted to mutually limit with the guiding and limiting portion (4) in the circumferential direction of the connecting rod (1); Wherein, when the locking member (3) is in the locking position and the second unlocking position, the guiding and limiting portion (4) cooperates with the fitting portion (5); when the locking member (3) is in the first unlocking position, the guiding and limiting portion (4) is separated from the fitting portion (5), and the locking member (3) is adapted to rotate a preset angle for commutation.

3. The inclined locking tongue structure (100) according to claim 2, characterized in that, The guiding and limiting portion (4) is a rectangular convex portion protruding from the outer periphery of the connecting rod (1), and the through hole includes a rectangular hole section, and the rectangular hole section slidably cooperates with the rectangular convex portion.

4. The inclined locking tongue structure (100) according to claim 3, wherein, The connecting rod (1) is a round rod, the through hole further includes a circular hole section, and the circular hole section is rotatably and slidably cooperated with the connecting rod (1); the rectangular hole section is communicated with the circular hole section and is arranged at a position close to the oblique locking tongue (2).

5. The beveled locking tongue structure (100) according to any one of claims 1 to 4, characterized in that, Further includes a first elastic member (6), arranged between the locking member (3) and the other end of the connecting rod (1), providing an elastic force for the locking member (3) to reset to the locking position; And / or, two flipping inclined surfaces (22) are symmetrically arranged at one end of the oblique locking tongue (2) facing away from the connecting rod (1), and the two flipping inclined surfaces (22) are respectively arranged on both sides of the oblique locking tongue (2) along the flipping direction and form a conical structure; And / or, a rotating portion (11) is arranged at one end of the connecting rod (1), and a receiving space (23) is arranged on the oblique locking tongue (2), and the rotating portion (11) is rotatably connected in the receiving space (23).

6. The inclined locking tongue structure (100) according to any one of claims 1 to 4, characterized in that, A locking convex block (31) is arranged on the end surface of the locking member (3) facing the oblique locking tongue (2), and a limiting groove (21) is arranged at one end of the oblique locking tongue (2) facing the locking member (3); when the locking member (3) is in the locking position, the locking convex block (31) extends into the limiting groove (21).

7. The beveled locking tongue structure (100) according to claim 6, characterized in that, A locking surface (32) is provided on one side of the locking protrusion (31); when the locking member (3) is in the locking position, the locking surface (32) is adapted to abut against the groove wall of the limiting groove (21) to lock the oblique locking tongue (2); And / or, there are two locking protrusions (31), which are respectively arranged on both sides of the through hole.

8. The oblique locking tongue structure (100) according to any one of claims 2 to 4, characterized in that, The invention also comprises an unlocking paddle (7) and a pushing member (8); the unlocking paddle (7) is rotatably arranged on the side of the connecting rod (1); and is suitable for being rotated under the drive of a mechanical key, a motor or a door handle; one end of the pushing member (8) cooperates with the locking member (3), and the other end cooperates with the unlocking paddle (7), and is suitable for driving the locking member (3) to move to the second unlocking position under the drive of the unlocking paddle (7).

9. A door lock, characterized in that, The invention comprises an inclined locking tongue structure (100) and a lock housing (200) as claimed in any one of claims 1 to 8, wherein the inclined locking tongue structure (100) is movably arranged in the lock housing (200), an opening (201) is provided on at least one side wall of the lock housing (200), and the locking element (3) is movably arranged at the opening (201).

10. The door lock according to claim 9, characterized in that, It also includes a second elastic member (300) which is arranged between the oblique lock tongue structure (100) and the lock housing (200) and provides an elastic force for the oblique lock tongue structure (100) to move toward the outside of the lock housing (200).

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