A bolt locking mechanism and a door lock having the same

Abstract

The present invention provides a deadbolt locking mechanism and a door lock having the same, wherein the deadbolt locking mechanism comprises: a safety knob and at least two locking structures linked with the safety knob; at least one of the locking structures is respectively arranged on both sides of the midline of the deadbolt entry and exit direction of the deadbolt driving mechanism; when the deadbolt is retracted into a lock shell, the locking structure can be activated by turning the safety knob, and the two ends of a deadbolt fixing plate used to connect the deadbolt are locked simultaneously; the deadbolt locking mechanism of the present invention comprises a safety knob linked with at least two locking structures, at least one of the locking structures is respectively arranged on both sides of the deadbolt driving mechanism, the locking structure can be activated by turning the safety knob, and the two ends of the deadbolt fixing plate used to connect the deadbolt are locked simultaneously by the locking structure; after the deadbolt is retracted into the lock shell, the deadbolt is locked by using the above structure, and the deadbolt will not be tilted, and the deadbolt can be completely hidden in the lock shell panel.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and in particular to a bolt locking mechanism and a door lock having the same. Background Art

[0002] The self-popular lock body pops out automatically when the lock tongue touches the door frame when the door is closed, realizing automatic locking. When there are many guests in and out of the house, it is necessary to turn the safety knob to clamp the lock tongue to realize the normally open mode, that is, the door is closed but the lock tongue does not pop out and lock.

[0003] In the prior art, in order to ensure that the locking and unlocking actions of the lock tongue can be carried out stably and smoothly, a lock tongue driving mechanism is usually arranged in the center of the lock shell, so that the safety knob and its matching retaining mechanism are arranged at a position deviating from the middle part of the lock shell. The safety knob is used to hold the lock tongue so that it does not pop out of the door panel. Since it is arranged at a position deviating from the middle part, the point of action of the safety knob on the lock tongue is deviated from the middle part of the lock tongue. However, since the cumulative active gap of the movable parts of the lock tongue of the door lock is large inside the lock shell, the safety knob used in the prior art door lock supports the lock tongue at a single point, which causes the lock tongue to be unbalanced and easy to tilt and leak out of the panel.

[0004] Through the above analysis, it can be known that the lock tongue locking mechanism of the prior art will generate a torsion on the lock tongue when working, so that after the safety button is retained, a part of the lock tongue away from the action point of the retaining mechanism will protrude from the lock shell panel. The protruding lock tongue is not only unsightly, but also scratches the door frame when opening and closing the door. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that a portion of the lock tongue protrudes from the lock shell panel after the lock tongue is locked, thereby providing a lock tongue locking mechanism and a door lock having the same.

[0006] In order to solve the above technical problems, the present invention provides a bolt locking mechanism, comprising: a safety knob and at least two locking structures linked with the safety knob;

[0007] At least one locking structure is respectively arranged on both sides of the midline of the lock tongue driving mechanism in the direction of entry and exit of the lock tongue;

[0008] When the lock tongue is retracted into the lock housing, the locking structure can be activated by rotating the safety knob to simultaneously lock the two ends of the lock tongue fixing plate connected to the lock tongue.

[0009] As a preferred solution, the locking structure includes:

[0010] The first locking structure is located at the first end of the locking tongue fixing plate near the safety knob, and the first locking structure includes:

[0011] A safety paddle, connected to the rotating shaft of the safety knob and moving in conjunction with the safety knob;

[0012] The locking support platform is arranged at the first end of the locking tongue fixing plate, cooperates with the safety pick, and is suitable for supporting the safety pick.

[0013] As a preferred solution, the locking structure further includes:

[0014] The second locking structure is located at the second end of the locking tongue fixing plate, and the second locking structure includes:

[0015] A safety push block is connected to the rotating shaft of the safety knob and moves in conjunction with the safety knob;

[0016] A push rod is slidably connected to the lock housing at an angle to the in-and-out direction of the lock tongue, one end of the push rod close to the safety knob is suitable for cooperating with the safety push block, and one end of the push rod close to the second end of the lock tongue fixing plate is suitable for cooperating with the lock tongue fixing plate;

[0017] A locking groove is provided at the second end of the locking tongue fixing plate, cooperates with the push rod, and is suitable for supporting one end of the push rod; the push rod slides in the lock housing, has a locking position in which one end is inserted into the locking groove of the locking tongue fixing plate, and also has an unlocking position in which the push rod is pulled out of the locking groove;

[0018] A push rod return spring is connected between the push rod and the lock housing and has a biasing force for driving the push rod to move toward the unlocking position.

[0019] As a preferred embodiment, the push rod has at least one elongated hole, the direction of which is parallel to the sliding direction of the push rod in the lock housing; at least two spaced-apart limiting columns are fixedly arranged in the lock housing, and the limiting columns are inserted in the elongated hole of the push rod.

[0020] As a preferred solution, there are two elongated holes which are spaced apart from each other.

[0021] As a preferred solution, the push rod is perpendicular to the entry and exit directions of the lock tongue.

[0022] As a preferred solution, the lock tongue driving mechanism comprises an elastic driving member, at least one of which is respectively provided at both ends of the lock tongue fixing plate, and the elastic driving member has a biasing force for driving the lock tongue to extend out of the lock housing.

[0023] As a preferred solution, the elastic driving member is a torsion spring.

[0024] As a preferred solution, the rotation axis of the safety knob is vertically inserted into the lock housing.

[0025] The present invention also provides a door lock having a lock tongue locking mechanism according to any one of the above-mentioned solutions.

[0026] The technical solution of the present invention has the following advantages:

[0027] 1. The lock tongue locking mechanism provided by the present invention has a safety knob linked with at least two locking structures, at least one of the locking structures is respectively arranged on both sides of the lock tongue driving mechanism, and the locking structure can be activated by turning the safety knob, and the two ends of the lock tongue fixing plate used to connect the lock tongue are locked simultaneously by the locking structure; after the lock tongue is retracted into the lock shell, the lock tongue is locked by the above structure, which will not cause the lock tongue to tilt, and the lock tongue can be completely hidden in the lock shell panel.

[0028] 2. The lock tongue locking mechanism provided by the present invention has a push rod slidably arranged in the lock shell. When the safety button is rotated, the push rod is driven to move to the other side to the locking groove of the lock tongue fixing plate. The lock tongue is blocked by the clamping groove, which balances the lock tongue and prevents it from popping outwards due to the applied force.

[0029] 3. The door lock provided by the present invention has the above-mentioned bolt locking mechanism and thus has any of the advantages mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 It is a front view of the door lock of the present invention in which the lock tongue is retracted into the door panel but is not locked by the safety knob.

[0032] Figure 2 for Figure 1 The front view of the deadbolt in the locked state.

[0033] Figure 3 It is a rear view of the push rod in the lock housing.

[0034] Description of reference numerals:

[0035] 1. Lock housing; 2. Lock tongue; 3. Lock tongue fixing plate; 4. Locking support platform; 5. Locking groove; 6. Rotating shaft; 7. Safety paddle; 8. Safety push block; 9. Push rod; 10. Push rod return spring; 11. Long hole; 12. Limit column; 13. Elastic driving part; 14. Panel. DETAILED DESCRIPTION

[0036] 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.

[0037] 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" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] 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.

[0039] 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.

[0040] A specific implementation of the door lock provided in this embodiment includes: a lock shell and a lock tongue locking mechanism arranged in the lock shell.

[0041] like Figure 1 , Figure 2As shown, in the lock housing 1, the deadbolt locking mechanism includes: a safety knob and two locking structures linked with the safety knob. The rotating shaft 6 of the safety knob is vertically inserted into the lock housing 1; the locking structures are respectively arranged one on each side of the midline of the deadbolt 2 in the entry and exit direction of the deadbolt driving mechanism; when the deadbolt 2 is retracted into the lock housing 1, the locking structure can be activated by screwing the safety knob to simultaneously lock the two ends of the deadbolt fixing plate 3 used to connect the deadbolt 2. The deadbolt driving mechanism includes an elastic driving member 13, which is a torsion spring. At least one of the elastic driving members 13 is respectively arranged at the two ends of the deadbolt fixing plate 3, and the elastic driving member 13 has a biasing force to drive the deadbolt 2 to extend out of the lock housing 1.

[0042] The locking structure comprises: a first locking structure and a second locking structure.

[0043] The first locking structure is located at the first end of the lock tongue fixing plate 3 near the safety knob, and the first locking structure includes: a safety paddle 7 and a locking support platform 4. The safety paddle 7 is connected to the rotating shaft 6 of the safety knob and moves with the safety knob. The locking support platform 4 is arranged at the first end of the lock tongue fixing plate 3, cooperates with the safety paddle 7, and is suitable for supporting the safety paddle 7.

[0044] The second locking structure is located at the second end of the bolt fixing plate 3, and the second locking structure comprises: a safety push block 8, a push rod 9 and a push rod return spring 10. The safety push block 8 is connected to the rotating shaft 6 of the safety knob and is linked with the safety knob.

[0045] The push rod 9 is slidably connected to the lock housing 1 at an angle to the direction of entry and exit of the lock tongue 2. In this embodiment, the push rod 9 is perpendicular to the direction of entry and exit of the lock tongue 2. The end of the push rod 9 close to the safety knob is suitable for cooperating with the safety push block 8, and the end of the push rod 9 close to the second end of the lock tongue fixing plate 3 is suitable for cooperating with the lock tongue fixing plate 3. The second end of the lock tongue fixing plate 3 is provided with a locking groove 5, which cooperates with the push rod 9 and is suitable for supporting one end of the push rod 9. Figure 3 As shown, the push rod 9 has two spaced-apart long holes 11, the direction of the long holes 11 is parallel to the sliding direction of the push rod 9 in the lock housing 1; two spaced-apart limiting columns 12 are fixedly arranged in the lock housing 1, and the limiting columns 12 are inserted into the long holes 11 of the push rod 9; the push rod 9 slides in the lock housing 1, has a locking position in which one end is inserted into the locking groove 5 of the lock tongue fixing plate 3, and also has an unlocking position in which the push rod 9 is pulled out of the locking groove 5; as shown in FIG. Figure 1 As shown, the push rod 9 is in the unlocked position. Figure 2As shown, the push rod 9 is in the locked position.

[0046] The push rod return spring 10 is connected between the push rod 9 and the lock housing 1 and has a biasing force for driving the push rod 9 to move toward the unlocking position.

[0047] How it works

[0048] like Figure 1 As shown, after the bolt fixing plate 3 drives the bolt 2 to retract into the panel 14 of the lock housing 1, the safety knob is turned, as shown in FIG. Figure 2 As shown, the rotating shaft 6 of the safety knob drives the safety paddle 7 and the safety push block 8 to rotate, so that the safety paddle 7 is supported on the locking support platform 4, and the safety push block 8 drives the push rod 9 to move, so that the push rod 9 is inserted into the locking groove 5 at the other end of the lock tongue fixing plate 3; thereby, the lock is performed from both ends of the lock tongue fixing plate 3, avoiding the problem of unbalanced force caused by single-point fixation of the lock tongue fixing plate 3.

[0049] 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. However, the obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A bolt locking mechanism, characterized in that: include: A safety knob and at least two locking structures linked to the safety knob; At least one locking structure is respectively arranged on both sides of a center line of the locking tongue (2) of the locking tongue driving mechanism in the entry and exit direction; When the lock tongue (2) is retracted into the lock housing (1), the locking structure can be activated by turning the safety knob to simultaneously lock the two ends of the lock tongue fixing plate (3) used to connect the lock tongue (2); The locking structure comprises: A first locking structure is located at a first end of the locking tongue fixing plate (3) close to the safety knob, and the first locking structure comprises: A safety paddle (7) connected to the rotating shaft (6) of the safety knob and moving in conjunction with the safety knob; A locking support platform (4), arranged at the first end of the locking tongue fixing plate (3), cooperating with the safety pick (7), and suitable for supporting the safety pick (7); The second locking structure is located at the second end of the locking tongue fixing plate (3), and the second locking structure comprises: A safety push block (8) connected to the rotating shaft (6) of the safety knob and moving in conjunction with the safety knob; A push rod (9) is slidably connected to the lock housing (1) at an angle with the entry and exit direction of the lock tongue (2); an end of the push rod (9) close to the safety knob is suitable for cooperating with the safety push block (8); and an end of the push rod (9) close to the second end of the lock tongue fixing plate (3) is suitable for cooperating with the lock tongue fixing plate (3); a locking groove (5) arranged at the second end of the lock tongue fixing plate (3), cooperating with the push rod (9) and being suitable for supporting one end of the push rod (9); the push rod (9) slides in the lock housing (1) and has a locking position in which one end is inserted into the locking groove (5) of the lock tongue fixing plate (3), and also has an unlocking position in which the push rod (9) is pulled out of the locking groove (5); A push rod return spring (10) is connected between the push rod (9) and the lock housing (1) and has a biasing force for driving the push rod (9) to move toward the unlocking position.

2. The bolt locking mechanism according to claim 1, characterized in that: The push rod (9) has at least one elongated hole (11), the direction of the elongated hole (11) being parallel to the sliding direction of the push rod (9) in the lock housing (1); at least two spaced-apart limiting columns (12) are fixedly arranged in the lock housing (1), and the limiting columns (12) are inserted into the elongated hole (11) of the push rod (9).

3. The bolt locking mechanism according to claim 2, characterized in that: The elongated holes (11) have two holes that are spaced apart from each other.

4. The bolt locking mechanism according to any one of claims 1 to 3, characterized in that: The push rod (9) is perpendicular to the entry and exit direction of the lock tongue (2).

5. The bolt locking mechanism according to any one of claims 1 to 3, characterized in that: The lock tongue drive mechanism comprises an elastic drive member (13), at least one of the elastic drive members (13) being respectively arranged at both ends of the lock tongue fixing plate (3), and the elastic drive member (13) having a biasing force for driving the lock tongue (2) to extend outward from the lock housing (1).

6. The bolt locking mechanism according to claim 5, characterized in that: The elastic driving member (13) is a torsion spring.

7. The bolt locking mechanism according to any one of claims 1 to 3, characterized in that: The rotating shaft (6) of the safety knob is vertically inserted into the lock housing (1).

8. A door lock, characterized in that: The invention has the bolt locking mechanism according to any one of claims 1 to 7.

Images