Door lock structure

Abstract

The present invention discloses a door lock structure, including: a lock body; a lock tongue assembly, which is telescopically arranged on the side of the lock body; a lock core, which is arranged on the lock body and extends along the thickness direction of the lock body, and an unlocking piece is movably arranged on the lock core, and the lock core and the unlocking piece are both located on one side of the lock tongue assembly; a linkage mechanism, which is connected between the unlocking piece and the lock tongue assembly; when the unlocking piece rotates, the lock tongue assembly is driven to telescopically move relative to the lock body through the linkage mechanism. The lock core and the unlocking piece of the above door lock structure are both located on one side of the lock tongue assembly, and the linkage mechanism converts the rotation of the unlocking piece into the telescopic movement of the lock tongue assembly, so as to avoid the lock tongue assembly occupying a certain space in the thickness direction of the lock body, so that the length of the lock core can be made as long as possible, thereby improving the safety performance of the door lock structure.

Description

Technical Field

[0001] The invention relates to a door lock structure. Background Art

[0002] The general door lock structure includes a lock body, a lock core is arranged in the lock body, a lock opening piece is movably arranged on the lock core, and a lock tongue assembly is arranged on the lock body, which can telescopically move along the side thereof, and the lock opening piece extends into the interior of the lock tongue assembly to link the telescopic movement of the lock tongue assembly. Among them, the lock core and the lock tongue assembly are stacked and arranged along the thickness direction of the door panel. Due to the limited thickness of the door panel, in order to reserve a certain thickness distance for installing the lock tongue assembly, the length of the lock core is limited to a short range. However, since the length of the lock core is closely related to its safety performance, it is impossible to improve the safety performance of the door lock structure as much as possible. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a door lock structure with higher safety performance.

[0004] According to an embodiment of the present invention, the door lock structure includes: a lock body; a lock tongue assembly, which is telescopically arranged on the side of the lock body; a lock core, which is arranged on the lock body and extends along the thickness direction of the lock body, and a lock opening piece is movably arranged on the lock core, and the lock core and the lock opening piece are both located on one side of the lock tongue assembly; a linkage mechanism, which is connected between the lock opening piece and the lock tongue assembly; when the lock opening piece rotates, the lock tongue assembly is driven to telescopically move relative to the lock body through the linkage mechanism.

[0005] The door lock structure according to the embodiment of the present invention has at least the following beneficial effects:

[0006] The lock core and unlocking plate of the above door lock structure are both located on one side of the lock tongue assembly, and the linkage mechanism converts the rotation of the unlocking plate into the telescopic movement of the lock tongue assembly, thereby avoiding the lock tongue assembly occupying a certain space in the thickness direction of the lock body, thereby making the length of the lock core as long as possible and improving the safety performance of the door lock structure.

[0007] In some embodiments of the present invention, the linkage mechanism includes a rotating member rotatably arranged on the lock body and connected to the unlocking plate, a convex column is provided on the side of the rotating member, and the lock tongue assembly includes a lock tongue shell, a shift block is rotatably arranged on the lock tongue shell, the shift block is connected to a connecting rod that rotates coaxially therewith, and a limiting groove matching the convex column is provided on the connecting rod, and the convex column can slide in the limiting groove to drive the connecting rod to rotate.

[0008] In some embodiments of the present invention, the rotating member is disc-shaped, the boss is integrally formed on the circumferential edge of the rotating member, and one end of the connecting rod away from the boss is connected to the shifting block via a first connecting shaft.

[0009] In some embodiments of the present invention, the lock body includes a front end cover, a middle plate and a rear end cover which are connected as an integral whole, the front end cover is provided with a mounting hole matching the lock core, the rear end cover is rotatably provided with a torsion piece, the torsion piece is provided with an anti-rotation column portion, the rotatable piece has a fitting hole which is sleeved on the anti-rotation column portion, the anti-rotation column portion is provided with an insertion hole for inserting the unlocking piece, and the first connecting shaft is rotatably provided on the middle plate.

[0010] In some embodiments of the present invention, the lock tongue assembly includes a slider slidably arranged on the lock tongue housing, the lock tongue housing is provided with an opening opposite to the slider, the slider is provided with a movable accommodating groove, the shift block has a shift rod extending into the movable accommodating groove, and the shift rod can push the slider to extend out of the opening or drag the slider to be accommodated in the lock tongue housing.

[0011] In some embodiments of the present invention, one end of the slider adjacent to the opening is movably pivoted to a first locking arm and a second locking arm, the first locking arm is provided with a first hook, the first locking arm is provided with a second hook opposite to the first hook, and the first locking arm and the second locking arm can both abut against the edge of the opening so that the first hook and the second hook move away from each other and open outward.

[0012] In some embodiments of the present invention, the lock core includes a lock sleeve and a core body rotatably arranged inside the lock sleeve, and the end surface of the core body adjacent to the unlocking plate is provided with a first fan-shaped part and a second fan-shaped part symmetrical about the axis of the core body, and a rotation space is provided between the first fan-shaped part and the second fan-shaped part for the unlocking plate to rotate relative to the core body.

[0013] In some embodiments of the present invention, the first fan-shaped member has a first limiting surface and a second limiting surface that are perpendicular to each other, the second fan-shaped member has a third limiting surface and a fourth limiting surface that are perpendicular to each other, the first limiting surface is parallel to the third limiting surface, the second limiting surface is parallel to the fourth limiting surface, and the first limiting surface, the second limiting surface, the third limiting surface and the fourth limiting surface jointly define the rotation space.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 A schematic structural diagram of an embodiment of a door lock structure of the present invention in an unlocked state;

[0017] Figure 2 A schematic structural diagram of an embodiment of a door lock structure of the present invention in a locked state;

[0018] Figure 3 for Figure 1 A schematic diagram of the structural decomposition of an embodiment;

[0019] Figure 4 for Figure 1 A schematic structural diagram of a combination of a bolt assembly, a linkage mechanism, a core body, an unlocking piece and a twisting member of an embodiment;

[0020] Figure 5 for Figure 2 A schematic structural diagram of a combination of a bolt assembly, a linkage mechanism, a core body, an unlocking piece and a twisting member of an embodiment;

[0021] Figure 6 It is a schematic diagram of the structural decomposition of the linkage mechanism, the lock core, the unlocking piece and the torsion piece in the unlocked state;

[0022] Figure 7 It is a schematic diagram of the structural breakdown of the linkage mechanism, lock cylinder, unlocking piece and torsion member in the locked state. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] 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.

[0027] See also Figures 1 to 3 The door lock structure of the present invention comprises: a lock body 100; a lock tongue assembly 200, which is telescopically arranged on the side of the lock body 100; a lock core 300, which is arranged on the lock body 100 and extends along the thickness direction of the lock body 100, and a lock opening piece 310 is movably arranged on the lock core 300, and the lock core 300 and the lock opening piece 310 are both located on one side of the lock tongue assembly 200; a linkage mechanism 400, which is connected between the lock opening piece 310 and the lock tongue assembly 200; when the lock opening piece 310 rotates, the lock tongue assembly 200 is driven to telescopically move relative to the lock body 100 through the linkage mechanism 400.

[0028] The lock core 300 and the unlocking piece 310 of the above door lock structure are both located on one side of the lock tongue assembly 200, and the linkage mechanism 400 converts the rotation of the unlocking piece 310 into the telescopic movement of the lock tongue assembly 200, thereby preventing the lock tongue assembly 200 from occupying a certain space in the thickness direction of the lock body 100, thereby making the length of the lock core 300 as long as possible and improving the safety performance of the door lock structure.

[0029] See also Figure 3 , Figure 4 and Figure 5In some embodiments of the present invention, the linkage mechanism 400 includes a rotating member 410 rotatably arranged on the lock body 100 and connected to the unlocking piece 310, a convex column 411 is provided on the side of the rotating member 410, and the lock tongue assembly 200 includes a lock tongue housing 210 fixedly arranged on the lock body 100, a shift block 220 is rotatably arranged on the lock tongue housing 210, the shift block 220 is connected to a connecting rod 420 that rotates coaxially therewith, and a limiting slide groove 421 matching the convex column 411 is provided on the connecting rod 420, and the convex column 411 can slide in the limiting slide groove 421 to drive the connecting rod 420 to rotate. When the door lock structure is switched on and off, the key is inserted into the lock core 300, the lock core 300 drives the unlocking piece 310 to rotate, the unlocking piece 310 drives the rotating member 410 to rotate, and the convex column 411 of the rotating member 410 slides relative to the limiting slide groove 421 during the rotation process, thereby driving the connecting rod 420 to rotate, and the connecting rod 420 further drives the shifting block 220 to rotate, and the forward and reverse rotation of the shifting block 220 can drive the telescopic movement of the lock tongue assembly 200, thereby locking or opening the door. The above linkage mechanism 400 has reliable and accurate movement, is not easy to wear, and has a long service life. Moreover, the linkage mechanism 400 can realize power transmission over a long distance, reduce the influence on the layout between the various components inside the lock body 100, and does not need to set a plurality of mutually linked transmission parts (such as a method of multiple sets of gear pairs linked to each other), and the structure of the linkage mechanism is very simple.

[0030] See also Figure 4 and Figure 5 In some embodiments of the present invention, the rotating member 410 is disc-shaped, and the boss 411 is integrally formed on the circumferential edge of the rotating member 410, thereby simplifying the connection between the boss 411 and the rotating member 410. The end of the connecting rod 420 away from the boss 411 is connected to the shift block 220 through a first connecting shaft 430.

[0031] See also Figure 3 In some embodiments of the present invention, the lock body 100 includes a front cover 110, an intermediate plate 120 and a rear cover 130 connected as one body, the front cover 110 and the rear cover 130 are respectively used to be installed on the outer side and the inner side of the door plate, the front cover 110 is provided with a mounting hole 111 matching the lock core 300, and the rear cover 130 is rotatably provided with a torsion piece 140, the torsion piece 140 is provided with an anti-rotation column 141, the rotating piece 410 has a fitting hole 412 mounted on the anti-rotation column 141, and the torsion piece 140 and the rotating piece 410 are rotated together by the cooperation of the anti-rotation column 141 and the fitting hole 412, the anti-rotation column 141 is provided with a socket 1411 for inserting the unlocking piece 310, and the first connecting shaft 430 is rotatably provided on the intermediate plate 120. When the user is located on the inner side of the door panel, the user can drive the rotating member 410 to rotate by rotating the twisting member 140, thereby driving the locking tongue assembly 200 to telescope to achieve unlocking or locking.

[0032] See also Figure 3 , Figure 4 and Figure 5 In some embodiments of the present invention, the lock bolt assembly 200 includes a slider 230 slidably disposed on the lock bolt housing 210, the lock bolt housing 210 is provided with an opening 211 opposite to the slider 230, the slider 230 is provided with a movable receiving groove 231, and the shift block 220 has a shift rod 221 extending into the movable receiving groove 231, and the shift rod 221 can push the slider 230 to extend out of the opening 211 or drag the slider 230 to be accommodated in the lock bolt housing 210. The unlocking piece 310 rotates to drive the shift block 220 to rotate, and the shift block 220 abuts against the side wall of the movable receiving groove 231 in the direction of the opening 211 to push the slider 230 to extend out of the opening 211, or the shift block 220 abuts against the side wall of the movable receiving groove 231 in the direction away from the opening 211 to drag the slider 230 to be accommodated in the lock bolt housing 210.

[0033] See also Figure 3 , Figure 4 and Figure 5 In some embodiments of the present invention, when the door lock structure is applied to a side-sliding door, in order to lock the side-sliding door when the lock tongue assembly 200 is extended, the end of the slider 230 adjacent to the opening 211 is movably pivoted with a first locking arm 240 and a second locking arm 250, and the first locking arm 240 is provided with a first hook, and the first locking arm 240 is provided with a second hook opposite to the first hook, and the first locking arm 240 and the second locking arm 250 can both abut against the edge of the opening 211 so that the first hook and the second hook deviate from each other and open outward.

[0034] See also Figure 6 and Figure 7 In some embodiments of the present invention, the lock core 300 includes a lock sleeve 320 and a core body 330 rotatably arranged inside the lock sleeve 320, and the end surface of the core body 330 adjacent to the unlocking plate 310 is provided with a first fan-shaped piece 331 and a second fan-shaped piece 332 symmetrical about the axis of the core body 330, and a rotation space is provided between the first fan-shaped piece 331 and the second fan-shaped piece 332 for the unlocking plate 310 to rotate relative to the core body 330. When the key is inserted into the lock cylinder 300 to unlock or lock the door, the core body 330 rotates relative to the lock sleeve 320 and drives the unlocking plate 310 to rotate, thereby linking the lock tongue assembly 200 through the linkage mechanism 400. In order to pull out the key, it is necessary to reversely drive the core body 330 to rotate a certain angle. Due to the existence of the rotation space, the core body 330 rotates relative to the unlocking plate 310 while the unlocking plate 310 remains stationary, thereby maintaining the unlocked state or locked state of the door lock structure. In addition, when the door is manually unlocked or locked by the torsion piece 140, the unlocking plate 310 will not drive the core body 330 to rotate when it rotates. In this process, the rotation space serves to avoid air.

[0035] See also Figure 6 and Figure 7 In some embodiments of the present invention, the first sector 331 has a first limiting surface 3311 and a second limiting surface 3312 which are perpendicular to each other, and the second sector 332 has a third limiting surface 3321 and a fourth limiting surface 3322 which are perpendicular to each other, the first limiting surface 3311 is parallel to the third limiting surface 3321, the second limiting surface 3312 is parallel to the fourth limiting surface 3322, and the first limiting surface 3311, the second limiting surface 3312, the third limiting surface 3321 and the fourth limiting surface 3322 jointly define a rotation space. Preferably, the shortest distance between the first limiting surface 3311 and the third limiting surface 3321 matches the thickness of the unlocking piece 310, and the shortest distance between the second limiting surface 3312 and the fourth limiting surface 3322 matches the thickness of the unlocking piece 310, so as to prevent the unlocking piece 310 from moving when it moves in the rotation space. See. Figure 6 When the door lock structure is in the unlocked state, the unlocking piece 310 is sandwiched between the first limiting surface 3311 and the third limiting surface 3321, and then the core 330 drives the unlocking piece 310 to rotate 90°, the slider 230 of the lock tongue assembly 200 is in the extended state, and the door lock structure is in the locked state; see Figure 7 When unlocking is required, the core body 330 is rotated 90° in the opposite direction so that the unlocking piece 310 is clamped between the second limiting surface 3312 and the fourth limiting surface 3322. The core body 330 is further rotated 90° in the opposite direction to drive the slider 230 of the lock tongue assembly 200 to retract into the lock tongue housing 210, and the door lock structure is switched to the unlocking state.

[0036] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Door lock structure, characterized in that: include: Lock body (100); A lock tongue assembly (200) telescopically arranged on a side of the lock body (100); A lock core (300) is disposed on the lock body (100) and extends along the thickness direction of the lock body (100); a lock opening piece (310) is movably disposed on the lock core (300); and both the lock core (300) and the lock opening piece (310) are located on one side of the lock tongue assembly (200); A linkage mechanism (400) connected between the unlocking piece (310) and the locking tongue assembly (200); When the unlocking piece (310) rotates, the locking tongue assembly (200) is driven to perform telescopic movement relative to the lock body (100) via the linkage mechanism (400); The linkage mechanism (400) comprises a rotating member (410) rotatably arranged on the lock body (100) and connected to the unlocking piece (310), a convex column (411) being provided on the side of the rotating member (410), and the lock tongue assembly (200) comprises a lock tongue housing (210), a shifting block (220) being rotatably arranged on the lock tongue housing (210), the shifting block (220) being connected to a connecting rod (420) rotatable therewith, and a limiting screw matching the convex column (411) being provided on the connecting rod (420). The limiting groove (421) is provided, and the boss (411) can slide in the limiting groove (421) to drive the connecting rod (420) to rotate; the rotating member (410) is disc-shaped, and the boss (411) is integrally formed on the circumferential edge of the rotating member (410); one end of the connecting rod (420) away from the boss (411) is connected to the shifting block (220) via a first connecting shaft (430); the connecting rod (420) and the first connecting shaft (430) are sequentially arranged on one side of the rotating member (410).

2. The door lock structure according to claim 1, characterized in that: The lock body (100) comprises a front cover (110), an intermediate plate (120) and a rear cover (130) which are connected as one body; the front cover (110) is provided with a mounting hole (111) which matches the lock core (300); the rear cover (130) is rotatably provided with a torsion piece (140); the torsion piece (140) is provided with an anti-rotation column (141); the rotating piece (410) has a sleeve hole (412) sleeved on the anti-rotation column (141); the anti-rotation column (141) is provided with an insertion hole (1411) for inserting the unlocking piece (310); and the first connecting shaft (430) is rotatably provided on the intermediate plate (120).

3. The door lock structure according to claim 1, characterized in that: The lock tongue assembly (200) comprises a slider (230) slidably arranged on the lock tongue housing (210); the lock tongue housing (210) is provided with an opening (211) opposite to the slider (230); the slider (230) is provided with a movable receiving groove (231); the shift block (220) has a shifting rod (221) extending into the movable receiving groove (231); the shifting rod (221) can push the slider (230) to extend out of the opening (211) or drag the slider (230) to be accommodated in the lock tongue housing (210).

4. The door lock structure according to claim 3, characterized in that: One end of the slider (230) adjacent to the opening (211) is movably pivoted to a first locking arm (240) and a second locking arm (250); the first locking arm (240) is provided with a first hook; the first locking arm (240) is provided with a second hook opposite to the first hook; the first locking arm (240) and the second locking arm (250) are both capable of abutting against the edge of the opening (211) so that the first hook and the second hook are separated from each other and open outwards.

5. The door lock structure according to claim 1, characterized in that: The lock core (300) comprises a lock sleeve (320) and a core body (330) rotatably arranged inside the lock sleeve (320); a first sector-shaped part (331) and a second sector-shaped part (332) are provided on an end surface of the core body (330) adjacent to the unlocking piece (310) and are symmetrical about the axis of the core body (330); a rotation space is provided between the first sector-shaped part (331) and the second sector-shaped part (332) for the unlocking piece (310) to rotate relative to the core body (330).

6. The door lock structure according to claim 5, characterized in that: The first fan-shaped member (331) has a first limiting surface (3311) and a second limiting surface (3312) which are perpendicular to each other, and the second fan-shaped member (332) has a third limiting surface (3321) and a fourth limiting surface (3322) which are perpendicular to each other, the first limiting surface (3311) is parallel to the third limiting surface (3321), the second limiting surface (3312) is parallel to the fourth limiting surface (3322), and the first limiting surface (3311), the second limiting surface (3312), the third limiting surface (3321) and the fourth limiting surface (3322) jointly define the rotation space.

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