Square tongue self-elastic lock body

Abstract

The utility model relates to a dead bolt self-elastic lock body which comprises a shell, a dead bolt, an inclined bolt rod and a dead bolt elastic piece are arranged in the shell, an inclined bolt head is arranged at one end of the inclined bolt rod, and the dead bolt self-elastic lock body is characterized in that a lock block capable of locking the dead bolt when the dead bolt retracts into the shell is rotatably arranged in the shell, and a shifting piece capable of stretching out and drawing back along with the inclined bolt rod is arranged on the inclined bolt rod. A linkage plate is rotatably arranged on the locking block, a linkage elastic piece, an inclined tongue elastic piece and a guide piece are arranged in the shell, and an inclined guide face is arranged in the middle of the linkage plate and can be squeezed with the guide piece to enable the linkage plate to rotate clockwise when the poking piece drives the linkage plate to unlock, so that one end of the linkage plate rotates away from the end face of the poking piece. The door lock is simple in structure and few in parts, and the dead bolt can be driven to automatically bounce through retraction of the inclined bolt when the door is closed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lock body assembly. BACKGROUND

[0002] The door lock generally has a square tongue and a bevel tongue, the square tongue is extended to lock the door leaf, and the door leaf is locked firmly, the square tongue is retracted into the shell when the door is opened, the traditional mechanical door lock, the square tongue does not pop out after the door is closed, and manual operation (through a key or the like) is needed to pop out the lock tongue, generally, the consumer will forget to lock after leaving, thereby causing the door lock to be locked only by the bevel tongue, and the door is easily opened. The electronic lock is generally controlled by a motor to lock the square tongue, which needs to increase some control elements, not only increases the cost, but also is prone to failure due to more electronic control. Some self-bump lock bodies have been developed on the market, the lock bodies drive the square tongue to lock through the action of the bevel tongue, for example, a lock body with patent No. 201020026744.8 and the name of a self-bump lock body which realizes self-bump locking by driving the square tongue to pop out through the bevel tongue, the lock body realizes the unlocking of the bevel tongue to the square tongue through lock square tongue pop-out sliding blocks, square tongue pop-out switch pieces, unlocking lock square tongue pop-out sliding blocks, bevel tongue unlocking square tongue switch pieces, unlocking self-bump sliding blocks, and self-bump switch assembly, and the structure is complex, and the production cost is high. UTILITARY MODEL

[0003] The utility model aims at overcoming the defects of the prior art, and provides a square tongue self-popping lock body which is simple in structure and low in cost.

[0004] In order to solve the above problems, the utility model adopts the following technical scheme:

[0005] A square tongue self-popping lock body, including a shell, the shell is internally provided with a square tongue, a bevel tongue rod, square tongue elastic pieces capable of popping and pressing the square tongue to extend out of the shell, one end of the bevel tongue rod is provided with a bevel tongue head capable of being extruded by a door frame to drive the bevel tongue rod to retract into the shell, characterized in that: the shell is internally rotatably provided with a lock block capable of locking the square tongue when the square tongue retracts into the shell, the bevel tongue rod is provided with a push piece capable of extending and retracting with the bevel tongue rod, one end of the lock block close to the bevel tongue rod is rotatably provided with a linkage plate capable of driving the lock block to rotate and unlock and capable of abutting on one side of the push piece, the shell is internally provided with a linkage elastic piece capable of making the linkage plate rotate counterclockwise when the bevel tongue rod retracts into the shell, so that one end of the linkage plate rotates to the end face of the push piece, the shell is internally provided with bevel tongue elastic pieces capable of popping and pressing the bevel tongue head to extend out of the shell, so that the push piece drives the linkage plate through the end face to unlock the lock block, the shell is further internally provided with a guide piece capable of abutting and rotating the middle part of the linkage plate when the lock block is unlocked, and the middle part of the linkage plate is provided with an inclined guide surface capable of extruding the guide piece to make the linkage plate rotate clockwise during the unlocking process of the push piece driving the linkage plate, so that one end of the linkage plate rotates away from the end face of the push piece.

[0006] The square tongue self-locking body described above is characterized in that: a limiting block is provided inside the housing, a limiting groove is provided on the linkage plate, and a limiting pin is provided on the limiting block that extends into the limiting groove to block the linkage plate from rotating counterclockwise.

[0007] The square tongue self-locking body described above is characterized in that: the locking block is provided with a first fork and a second fork, one side of the square tongue is provided with a locking step for the first fork to abut against, and the linkage plate is hinged to the end of the second fork.

[0008] The self-locking body of the square tongue as described above is characterized in that: a lock block rotating shaft is provided inside the housing for mounting the lock block, the linkage elastic element is a torsion spring and is sleeved on the lock block rotating shaft, a positioning pin is provided on one end of the linkage plate near the lock block, one end of the torsion spring abuts against the inner wall of the housing and the other end abuts against the positioning pin.

[0009] The self-locking body with a square tongue as described above is characterized in that: a damper is provided on the square tongue, and one end of the shaft of the damper is fixed inside the housing.

[0010] The square tongue self-locking body described above is characterized in that: the housing is provided with a guide groove extending along the extension direction of the oblique tongue rod for inserting and guiding the end of the paddle; the guide plate is parallel to and spaced apart from the paddle; the guide plate is provided with a clearance groove for the oblique tongue rod to pass through and a guide groove for the inclined guide surface to extend into.

[0011] The square tongue self-locking body described above is characterized in that: the end of the linkage plate is provided with a first inclined surface that can be pressed by a paddle when the oblique tongue rod pops out, causing the linkage plate to rotate clockwise.

[0012] The beneficial effects of this utility model are as follows: By setting a locking block and a linkage plate, the lever and guide plate on the latch can cleverly cooperate with the linkage plate. When the latch retracts into the housing, the guide plate will move with the latch into the housing. Under the action of the linkage elastic element, the linkage plate will rotate to one side of the guide plate, so that the end part of the linkage plate rotates to the end face of the guide plate. When the latch rebounds, the guide plate will push the linkage plate. Since the inclined guide surface abuts against the guide plate, the linkage plate will not continue to rotate, but will drive the locking block to rotate and unlock. Under the action of the inclined guide surface, it will reverse until the end of the linkage plate is no longer on the side of the lever end face. In this way, the latch can no longer drive the linkage plate and locking block to reset, thus realizing unlocking and reset. The structure is simple and easy to use. By setting a damper, the square latch will not pop out rapidly after unlocking, reducing noise. [Attached Image Description]

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is the front view of the present utility model.

[0015] Figure 3 This is an exploded view of the present invention;

[0016] Figure 4 This is a front view of the utility model in use.

Detailed Implementation Methods

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0018] like Figures 1 to 4 As shown, a self-locking square latch includes a housing 1. Inside the housing 1 are a square latch 2, a beveled latch rod 3, and a square latch elastic element 20 that can spring the square latch 2 out of the housing 1. The square latch elastic element 20 can be a torsion spring; when the square latch 2 retracts into the lock housing, it compresses the square latch elastic element 20. One end of the beveled latch rod 3 has a beveled tongue 31 that can be pushed back into the housing 1 by the door frame, with the inclined surface of the beveled tongue 31 pressing against the door frame. A locking block 4 is rotatably provided inside the housing 1, which locks the square latch 2 when it retracts into the housing 1. One end of the locking block 4 abuts against the square latch 2, preventing it from being ejected. A lever 32 that extends and retracts with the beveled latch rod 3 is provided on the beveled latch rod 3, and the lever 32 is fixed to the end of the beveled latch rod 3 away from the beveled tongue 31 by a retaining ring. A linkage plate 5 is rotatably provided on one end of the locking block 4 near the latch rod 3, which can drive the locking block 4 to rotate and unlock, and can abut against the side of the lever 32. The linkage plate 5 is hinged to the end face of the locking block 4 via a hinge shaft. A linkage elastic element 6 is provided inside the housing 1, which allows the linkage plate 5 to rotate counterclockwise when the latch rod 3 retracts into the housing 1, causing one end of the linkage plate 5 to rotate to the end face of the lever 32. The linkage elastic element 6 can spring the linkage plate 5 to rotate. When the linkage plate 5 cannot rotate, the spring force of the elastic element 6 will cause the locking block 4 to rotate. A latch elastic element 33 is provided inside the housing 1, which can spring the latch tongue 31 to extend out of the housing 1, allowing the lever 32 to pass through the end face and abut the linkage plate 5, thereby unlocking the locking block 4. One end of the latch elastic element 33 springs the latch tongue 31. The housing 1 also includes a guide plate 7 that can rotate against the middle of the linkage plate 5 when the locking block 4 is unlocked. The middle of the linkage plate 5 has an inclined guide surface 51 that, during the unlocking process driven by the lever 32, can press against the guide plate 7, causing the linkage plate 5 to rotate clockwise and thus one end of the linkage plate 5 to turn away from the end face of the lever 32. The square tongue 2 has a locking step 21 on its side, below which (… Figure 1The relative positions of the components (with an inclined pressing surface) are such that when the square tongue 2 retracts into the housing 1, the inclined pressing surface pushes the locking block 4 to rotate counterclockwise, compressing the linkage elastic element 6. One end of the linkage plate 5 is held in place by the paddle 32, so the linkage plate 5 will rotate clockwise without jamming. When one end of the locking block 4 reaches the locking step 21, the linkage plate 5 is pressed by the restoring force of the linkage elastic element 6. Since the linkage plate 5 cannot rotate, the linkage plate 5 and the locking block 4 rotate clockwise together around the rotation center of the locking block 4, thereby locking one end of the locking block 4 onto the locking step 21. As the locking block 4 rotates, the linkage plate 5 also rotates and resets relative to the square tongue 2. The locking block 4 has a first fork 41 and a second fork 42. The square tongue 2 has a locking step 21 on one side for the first fork 41 to rest against. The linkage plate 5 is hinged to the end of the second fork 42. The end of the linkage plate 5 has a first inclined surface 55 that can be pressed by the lever 32 when the latch rod 3 pops out, causing the linkage plate 5 to rotate clockwise. The inclination of the inclined surface is relative; that is, when one end of the linkage plate 5 is on the side of the lever 32, the second inclined surface 55 is inclined relative to the lever 32. When the door is closed, the latch rod 31 is pressed by the door frame and retracts into the outer shell 1. During the retraction process, the lever 32 moves away from the end of the linkage plate 5. Under the action of the linkage elastic element 6, the linkage plate 5 continues to be pressed to rotate counterclockwise, so that one end of the linkage plate 5 will rotate onto the lever 32 (see attached image). Figure 1 The relative position of the two ends) is on the end face, and at the same time, the middle of one end of the linkage plate 5 abuts against the side of the inclined guide surface 51. When the tongue 31 pops out, the lever 32 also moves in the popping direction. At this time, the upper end face of the lever 32 pushes the linkage plate 5, but the linkage plate 5 can no longer rotate counterclockwise. In this way, the linkage plate 5 and the lock block 4 rotate counterclockwise around the rotation center of the lock block 4, thereby unlocking the square tongue 2. The square tongue 2 is popped out. In this process, due to the pressure between the inclined guide surface 51 and the guide plate 7, the linkage plate 5 rotates clockwise around the rotation center of the linkage plate 5, thereby causing the end of the linkage plate 5 to turn away from the upper end face of the lever 32 and return to the left side of the lever 32. When the tongue 31 continues to pop out, the side of the lever 32 continues to press the second inclined surface 55, causing the linkage plate 5 to rotate clockwise, causing the inclined guide surface 51 to move away from the guide plate 7, thereby achieving reset.

[0019] In order to make the linkage plate 5 rotation position controllable, the housing 1 is provided with a limit block 11, the linkage plate 5 is provided with a limit slot 52, the limit block 11 is provided with a limit pin 12 which extends into the limit slot 52 and can block the counterclockwise rotation of the linkage plate 5, so that when the latch tongue 31 retracts into the housing 1, the linkage plate 5 will not excessively rotate to the side of the end face of the tab 32. The housing 1 is provided with a lock block rotating shaft 43 which penetrates the lock block 4, the linkage elastic member 6 is a torsion spring and is sleeved on the lock block rotating shaft 43, the linkage plate 5 is provided with a positioning pin 53 on the end close to the lock block 4, one end of the torsion spring abuts against the inner wall of the housing 1 and the other end abuts against the positioning pin 53, the torsion spring presses the positioning pin 53, so that the linkage plate 5 can rotate clockwise. The square tongue 2 is provided with a damper 22, one end of the shaft rod 23 of the damper 22 is fixed in the housing 1, and the damper 22 generates damping when the square tongue 2 is ejected, so as to reduce the impact noise of the square tongue 2. The housing 1 is provided with a guide sliding groove 13 which extends along the extension direction of the latch lever 3 and is used for inserting the end of the tab 32 for guiding, the guide piece 7 is arranged in parallel with the tab 32 and is spaced apart from the tab 32, the guide piece 7 is provided with an empty slot 71 which is penetrated by the latch lever 3 and a guide slot 72 which is extended into the inclined guide surface 51, so as to facilitate installation and use.

Claims

1. A square latch self-locking body, comprising a housing (1), wherein the housing (1) is provided with a square latch (2), a diagonal latch rod (3), and a square latch elastic element (20) capable of pressing the square latch (2) out of the housing (1), wherein one end of the diagonal latch rod (3) is provided with a diagonal tongue (31) capable of being pressed and pushed by a door frame to retract the diagonal latch rod (3) into the housing (1), characterized in that: The shell (1) is rotatably provided with a locking block (4) capable of locking the square tongue (2) when the square tongue (2) is retracted into the shell (1), the oblique tongue rod (3) is provided with a push piece (32) capable of extending and retracting with the oblique tongue rod (3), the locking block (4) is rotatably provided with a linkage plate (5) capable of driving the locking block (4) to rotate and unlock and capable of abutting against one side of the push piece (32) at one end of the oblique tongue rod (3), the shell (1) is provided with a linkage elastic element (6) capable of rotating the linkage plate (5) counterclockwise when the oblique tongue rod (3) is retracted into the shell (1) to allow one end of the linkage plate (5) to rotate to the end surface of the push piece (32), the shell (1) is provided with an oblique tongue elastic element (33) capable of pressing the oblique tongue (31) to extend out of the shell (1) to allow the push piece (32) to push the linkage plate (5) through the end surface to unlock the locking block (4), the shell (1) is further provided with a guide piece (7) capable of rotating and abutting against the middle part of the linkage plate (5) when the locking block (4) is unlocked, and the middle part of the linkage plate (5) is provided with an inclined guide surface (51) capable of being pressed by the guide piece (7) during the unlocking process of the push piece (32) driving the linkage plate (5) to rotate clockwise to allow one end of the linkage plate (5) to rotate away from the end surface of the push piece (32).

2. A square tongue self-latching lock body according to claim 1, wherein: The shell (1) is provided with a limiting block (11), the linkage plate (5) is provided with a limiting groove (52), and the limiting block (11) is provided with a limiting pin (12) extending into the limiting groove (52) to block the counterclockwise rotation of the linkage plate (5).

3. A square tongue self-latching lock body according to claim 1, wherein: The locking block (4) is provided with a first branch (41) and a second branch (42), one side of the square tongue (2) is provided with a locking step (21) for abutting against the first branch (41), and the linkage plate (5) is hinged at the end of the second branch (42).

4. A square tongue self-latching lock body according to claim 1, wherein: The shell (1) is provided with a locking block rotating shaft (43) for accommodating the locking block (4), the linkage elastic element (6) is a torsion spring and is sleeved on the locking block rotating shaft (43), one end of the linkage plate (5) near the locking block (4) is provided with a positioning pin (53), and one end of the torsion spring abuts against the inner wall of the shell (1) and the other end abuts against the positioning pin (53).

5. A square tongue self-latching lock body according to claim 1, wherein: The square tongue (2) is provided with a damper (22), and one end of a shaft rod (23) of the damper (22) is fixed in the shell (1).

6. A square tongue self-latching lock body according to claim 1, wherein: The shell (1) is provided with a guide sliding groove (13) extending along the extension direction of the oblique tongue rod (3) for guiding the end part of the push piece (32) to insert, the guide piece (7) is arranged in parallel and opposite to the push piece (32), the guide piece (7) is provided with an avoidance groove (71) for the oblique tongue rod (3) to pass through and a guide groove (72) for the inclined guide surface (51) to extend into.

7. A square tongue self-latching lock body according to claim 1, wherein: The end part of the linkage plate (5) is provided with a first inclined surface (55) capable of being pressed by the push piece (32) to rotate the linkage plate (5) clockwise when the oblique tongue rod (3) is popped out.

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