A lock tongue opening and closing structure and door lock having the same

Abstract

The present invention discloses a bolt opening and closing structure and a door lock having the same, and relates to the technical field of locks, including: a lock body; a first gear assembly fixed on the lock body; a second gear assembly rotating around a rotating shaft fixed on the lock body, having a stop pin arranged away from the rotating shaft and meshing with the first gear assembly; a bolt assembly arranged in the lock body, including a bolt and a connecting plate connected to each other. When locking or unlocking is required, a key drives the first gear assembly to rotate to drive the second gear assembly to rotate, the stop pin rotates around the rotating shaft and slides in a first groove body formed on the connecting plate, and a force is applied to the connecting plate to make it move closer to or away from the opening, so as to lock or unlock; a first groove section or a second groove section symmetrically arranged about the first groove body makes it impossible for the bolt assembly to push the stop pin and can only be driven by a key, so as to achieve the purpose of self-locking. The present invention provides a bolt opening and closing structure that is convenient for locking and unlocking, and can be self-locking, and a door lock having the same.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a lock tongue opening and closing structure and a door lock having the same. Background Art

[0002] Door locks are common devices in our daily life, usually installed on doors. Existing door locks all use a key to turn a dial wheel, which pushes the lock bolt assembly in and out, and when it reaches the locking point, the lock bolt assembly is locked by the attached locking device. When the key is turned once to lock, the lock bolt assembly is not extended long enough, and the key needs to be turned twice to achieve the purpose of locking, and the same is true for unlocking. It is inconvenient to use, and the lock bolt locking device has a complex structure. If the manufacturing and matching are not good, it is easy to malfunction, and the anti-pry performance is poor. Summary of the invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the lock bolt device in the prior art, such as the complex structure and inconvenience in use, thereby providing a lock tongue opening and closing structure and a door lock having the same.

[0004] In order to solve the above technical problems, the present invention provides a lock tongue opening and closing self-locking structure, comprising:

[0005] A lock body having an opening; a first gear assembly fixed on the lock body and having a keyhole allowing a key to be inserted to drive it to rotate; a second gear assembly rotating around a rotating shaft fixed on the lock body, meshing with the first gear assembly, and having a stop pin arranged away from the rotating shaft; a lock tongue assembly arranged in the lock body, including a lock tongue and a connecting plate connected to each other, the connecting plate being formed with a first groove body allowing the stop pin to pass through, the first groove body having at least one third groove section for applying a blocking force to the stop pin along the circumferential motion of the rotating shaft, so that when the first gear assembly rotates, the second gear assembly applies a force to the connecting plate to move closer to or away from the opening through the sliding of the stop pin in the third groove section.

[0006] The first slot body also includes a first slot section and a second slot section for defining a starting position for movement of the stop pin.

[0007] The third slot section is arranged perpendicularly to the movement track of the locking tongue, and the first slot section and the second slot section are arranged symmetrically relative to the third slot section.

[0008] The first slot section, the second slot section and the third slot section form a "Y" shape.

[0009] The connecting plate is also formed with a second slot body that allows the rotating shaft to pass through, and the rotating shaft reciprocates relative to the second slot body under the action of the first gear assembly.

[0010] The extension direction of the second slot body is consistent with the movement direction of the locking tongue.

[0011] The first gear assembly includes a lock gear and a bridge gear meshing with each other, the key hole is formed on the lock gear, and the bridge gear is also meshingly connected with the second gear assembly.

[0012] The second gear assembly is a sector gear.

[0013] The stop pin is arranged close to the gear teeth of the sector gear.

[0014] A door lock comprises a lock tongue opening and closing structure.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The lock tongue opening and closing structure provided by the present invention has a structure that, when the key is inserted into the keyhole of the first gear assembly to drive the first gear assembly to rotate, the stop pin of the second gear assembly slides in the first groove body of the connecting plate around the rotating shaft. Since the third groove section of the first groove body applies a blocking force to the circular motion of the stop pin along the rotating shaft, the stop pin applies a reverse force to the connecting plate through the third groove section, thereby making it approach or move away from the opening to achieve the purpose of locking or unlocking. In this way, the key only needs to rotate a small angle to achieve the effect of a large movement of the lock tongue assembly, thereby reducing the number of turns of the key and making it more convenient to use.

[0017] 2. The lock tongue opening and closing structure provided by the present invention, when locking or unlocking, when the stop pin rotates to the first slot section or the second slot section at the top of the first slot body, the angle between the line between the stop pin and the rotating shaft and the movement trajectory of the lock tongue assembly is small, the force exerted on the stop pin is large in the axial direction of the lock tongue assembly and small in the axial direction of the lock tongue assembly, and the movement trajectories of the stop pin and the lock tongue assembly are inconsistent, so the lock tongue assembly cannot push the stop pin out of the first slot section or the second slot section, thereby making the lock tongue assembly reach a self-locking state, the form is simple, the locking device in the prior art can be eliminated, and due to the principle of mechanics, it is more anti-prying.

[0018] 3. The lock tongue opening and closing structure provided by the present invention has a second groove formed on the connecting plate that allows the rotating shaft to pass through, so that the second gear assembly rotates more smoothly; and because the present invention eliminates the locking device in the prior art and uses gear transmission, it can more effectively reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a front view of the lock tongue opening and closing structure of the present invention in the unlocked state;

[0021] Figure 2 It is a front view of the locking state of the lock tongue opening and closing structure of the present invention;

[0022] Figure 3 is a schematic structural diagram of a second gear assembly;

[0023] Figure 4 It is a structural schematic diagram of the lock tongue assembly;

[0024] Description of reference numerals:

[0025] 1. Keyhole; 2. Lock gear; 3. Bridge gear; 4. Second gear assembly; 5. First slot; 6. Stop pin; 7. Second slot; 8. Rotating shaft; 9. Connecting plate; 10. Lock tongue; 11. Lock body. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Figure 1 -4 is a specific implementation of the lock tongue opening and closing structure provided by the present invention, comprising:

[0031] A lock body 11; a first gear assembly fixed to the lock body 11; a second gear assembly 4 that rotates around a rotating shaft 8 fixed to the lock body 11, has a stop pin 6 arranged away from the rotating shaft 8 and meshes with the first gear assembly; a lock tongue assembly arranged in the lock body 11, including a lock tongue 10 and a connecting plate 9 that are connected to each other.

[0032] One side of the lock body 11 has an opening for the lock tongue 10 to enter and exit, the first gear assembly has a key hole 1 for allowing a key to be inserted to drive it to rotate, and the connecting plate 9 is formed with a first groove 5 for allowing the stop pin 6 to pass through, and the first groove 5 has a third groove section for applying a blocking force to the stop pin 6 along the circumferential movement of the rotating shaft 8; Figure 1 and Figure 2 As shown, the third groove section is arranged perpendicular to the movement trajectory of the lock tongue 10. When the key drives the first gear assembly to rotate, under the meshing action, the second gear assembly 4 applies a force to the connecting plate 9 to approach or move away from the opening through the sliding of the stop pin 6 in the third groove section, so as to lock or unlock the door, thereby achieving the effect that the key rotates a small angle and the lock tongue assembly moves a large stroke.

[0033] Specifically, in order to achieve the self-locking effect of the lock body, the first slot body 5 also includes a first slot section and a second slot section for limiting the starting position of the movement of the stop pin 6. The first slot section and the second slot section are symmetrically arranged relative to the third slot section and form a "Y" shape with it. Figure 1 and Figure 2 As shown; when the stop pin 6 rotates to the first slot section or the second slot section at the top of the first slot body 5, the movement direction of the lock tongue assembly is inconsistent with the movement direction of the stop pin. Since the angle between the line connecting the stop pin and the rotating shaft and the movement trajectory of the lock tongue assembly is small, the lock tongue assembly cannot push the stop pin 6 out of the first slot section or the second slot section, thereby causing the lock tongue assembly to reach a self-locking state.

[0034] To ensure that the reciprocating motion of the lock tongue assembly is more stable, a second groove body 7 is formed on the connecting plate 9 to allow the rotating shaft 8 to pass through. The extension direction of the second groove body 7 is consistent with the movement direction of the lock tongue 10, providing a guide for the reciprocating motion of the connecting plate. When the lock tongue assembly is driven by the stop pin, the rotating shaft 8 reciprocates relative to the second groove body 7.

[0035] The first gear assembly includes a lock gear 2 and a bridge gear 3 meshingly connected to each other, a key hole 1 is formed on the lock gear 2 , and the bridge gear 3 is also meshingly connected to the second gear assembly 4 .

[0036] The second gear assembly 4 is a sector gear, and the gear teeth are arranged at a position where it is meshed and rotated with the bridge gear 3, which can simplify the second gear assembly and prevent the excessive rotation of the second gear assembly from causing the lock tongue assembly to extend excessively out of the lock body 11 opening or shrink inside the lock body 11.

[0037] like Figure 3 As shown, the stop pin 6 is arranged close to the gear teeth of the sector gear to minimize the movement stroke.

[0038] When locking is required, Figure 1 As shown, the stop pin 6 is located in the first slot section on the right side of the first slot body 5. The key is turned clockwise, and the key drives the lock gear 2 to rotate through the keyhole 1 formed on the lock gear 2, which in turn drives the bridge gear 3 meshing with it and the second gear assembly 4 meshing with the bridge gear 3 and rotating around the shaft fixed to the lock body 11 to rotate clockwise. Since the force of the rotating key is greater than the force of the first slot section that prevents the stop pin 6 from moving, the stop pin 6 arranged on the second gear assembly 4, which is close to the gear teeth of the gear, rotates around the shaft and moves from the first slot section to the third slot section of the first slot body 5 in the vertical direction formed on the connecting plate 9. Since the key continues to rotate, the third slot section forms a force that prevents the stop pin 6 from making a circular motion along the shaft, so that the stop pin 6 can only slide downward along the third slot section, and exerts force on the connecting plate 9 to make it move close to the opening, and the lock tongue 10 extends out of the opening; until the stop pin 6 slides out of the third slot section, and slides to the second slot section on the left side of the first slot body under the action of inertia, as shown in FIG. Figure 2 As shown, the locking is completed. At this time, the stop pin 6 is self-locking due to the blocking force of the second groove section on its circular motion. When it is necessary to unlock, just turn the key counterclockwise. As an alternative embodiment, the second gear assembly can be set as a normal gear.

[0039] As an alternative embodiment, the third slot section is located above the first slot section and the second slot section, and the first slot body is arranged higher than the rotating shaft.

[0040] As an alternative embodiment, the first slot segment and the second slot segment may also be arcuate slot segments that are not concentric with the second gear assembly.

[0041] The present invention also provides a door lock, comprising the lock tongue opening and closing structure, the lock tongue opening and closing structure is installed on the door body, and a groove for allowing the lock tongue to be inserted is provided at a corresponding position of the door frame.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A lock tongue opening and closing structure, characterized in that: include: A lock body (11) having an opening; A first gear assembly, fixed to the lock body (11), having a key hole (1) for allowing a key to be inserted to drive the first gear assembly to rotate; A second gear assembly (4) rotates around a rotating shaft (8) fixed to the lock body (11), meshes with the first gear assembly, and has a stop pin (6) arranged away from the rotating shaft (8); A lock tongue assembly is arranged in the lock body (11), comprising a lock tongue (10) and a connecting plate (9) connected to each other, wherein the connecting plate (9) is formed with a first slot body (5) allowing the stop pin (6) to pass through, and the first slot body (5) has at least one third slot section for applying a blocking force to the stop pin (6) along the circumferential movement of the rotating shaft (8), so that when the first gear assembly rotates, the second gear assembly (4) applies a force to the connecting plate (9) to move closer to or away from the opening through the sliding of the stop pin (6) in the third slot section; The first slot body (5) further comprises a first slot section and a second slot section for defining a starting position of movement of the stop pin (6); The third slot section is arranged perpendicularly to the movement track of the locking tongue (10), and the first slot section and the second slot section are arranged symmetrically relative to the third slot section; The first slot section, the second slot section and the third slot section form a "Y" shape; The connecting plate (9) is also formed with a second slot body (7) allowing the rotating shaft (8) to pass through, and the rotating shaft (8) reciprocates relative to the second slot body (7) under the action of the first gear assembly; The first gear assembly comprises a lock gear (2) and a bridge gear (3) which are meshed with each other, the key hole is formed on the lock gear (2), and the bridge gear (3) is also meshed with the second gear assembly (4).

2. The lock tongue opening and closing structure according to claim 1, characterized in that: The extension direction of the second groove body (7) is consistent with the movement direction of the locking tongue (10).

3. The lock tongue opening and closing structure according to claim 1, characterized in that: The second gear assembly (4) is a sector gear.

4. The lock tongue opening and closing structure according to claim 3, characterized in that: The stop pin (6) is arranged close to the gear teeth of the sector gear.

5. A door lock, characterized in that: The invention comprises the lock tongue opening and closing structure according to any one of claims 1 to 4.

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