A bolt assembly of a door lock

Abstract

The present invention relates to the technical field of door locks, and discloses a bolt assembly of a door lock, comprising: a housing; a first driving member, rotatably arranged in the housing; a stroke amplification mechanism, comprising a mounting frame and a second driving member, the mounting frame is arranged in the housing, and the first driving member can drive the mounting frame to slide; the second driving member is rotatably arranged in the housing, and the second driving member abuts against the mounting frame; a bolt and a connecting component, the bolt is telescopically arranged on the housing; the connecting component is movably arranged in the housing, and the connecting component connects the second driving member and the bolt. The advantages of the present invention are that each component is installed in the housing, and the overall lock shell design enhances the strength of the bolt assembly and improves the service life; the stroke amplification mechanism is arranged, so that the door handle only needs to rotate a small angle to open the door, which is easy to use; and the bolt is reversible, and can be applied to inward-opening doors or outward-opening doors, and has strong versatility.

Description

Technical Field

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

[0002] Doors are important access passages and ventilation and lighting media for rooms in buildings. Door locks are usually required to ensure the closure of rooms or passages. Among them, the lock tongue assembly is an important component of the door lock, and the stability and ease of use of the lock tongue assembly are particularly important.

[0003] Existing door locks usually drive the lock tongue to extend and retract by turning the door handle, and the door handle needs to be turned at a large angle to achieve the retraction of the lock tongue to open the door, which is inconvenient to use. Excessive turning of the door handle can easily cause the lock tongue assembly to shift, affecting unlocking and reducing the service life of the door lock. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a lock tongue assembly of a door lock having a stroke amplification mechanism and a reversible lock tongue.

[0005] The technical solution adopted by the present invention to solve the technical problem is to provide a lock tongue assembly of a door lock, comprising:

[0006] case;

[0007] A first driving member is rotatably disposed in the housing;

[0008] The stroke amplification mechanism comprises a mounting frame and a second driving member, wherein the mounting frame is arranged in the housing, and the first driving member can drive the mounting frame to slide; the second driving member is rotatably arranged in the housing, and the second driving member abuts against the mounting frame;

[0009] A locking tongue and a connecting assembly, wherein the locking tongue is telescopically arranged on the shell; the connecting assembly is movably arranged in the shell, and the connecting assembly connects the second driving member and the locking tongue.

[0010] Further, the mounting frame has a mounting space, the first driving member is inserted into the mounting space, a push portion is provided on the first driving member along its circumference, an abutment block is provided on the mounting frame, and the push portion abuts against the abutment block;

[0011] The housing is provided with a slide groove, and the abutment block is slidably arranged in the slide groove.

[0012] Furthermore, a protrusion is provided on the first driving member, and the push parts are provided at both ends of the protrusion. Mounting grooves are provided on both sides of the mounting frame, and the side walls of the two mounting grooves extend outwardly to form the abutment blocks; the push part passes through the mounting groove and abuts on the abutment block.

[0013] Furthermore, the second driving member is arranged in a C shape, the second driving member is located in the installation space, one end of the second driving member is hinged on the shell, the middle part of the second driving member is movably abutted against the end of the mounting frame away from the first driving member, and the other end of the second driving member is movably abutted against the connecting component.

[0014] Further, the locking tongue is rotatably arranged on the connecting assembly, and the connecting assembly includes a connecting member and a rotating shaft, one end of the connecting member is provided with a hook, and one end of the second driving member abuts against the hook; the other end of the connecting member is connected to the rotating shaft;

[0015] The locking tongue is provided with a connecting groove, and one end of the rotating shaft is rotatably arranged in the connecting groove.

[0016] Furthermore, a pin is provided in the connecting groove, a groove is provided on the rotating shaft along its circumference, and the pin is clamped in the groove.

[0017] Furthermore, it also includes a first compression spring, a convex ring is provided at one end of the rotating shaft away from the groove, the first compression spring is sleeved on the rotating shaft, one end of the first compression spring abuts against the convex ring, and the other end of the first compression spring abuts against the mounting frame.

[0018] Furthermore, it also includes a locking mechanism, which is arranged in the installation space, and the locking mechanism includes a locking member, which is movably arranged on the housing, and the locking member is provided with a first locking block and a second locking block;

[0019] The first driving member includes a first cam and a second cam. The first cam is provided with a first slot, the second cam is provided with a second slot, the first locking block can be engaged in the first slot, and the second locking block can be engaged in the second slot.

[0020] Furthermore, the locking mechanism also includes a limit plate and a limit column, the limit plate is arranged on the shell, and a plurality of limit grooves are provided on the limit plate; one end of the limit column is movably arranged in the locking member, and the other end of the limit column is arranged in the limit groove.

[0021] Furthermore, it also includes a second compression spring, one end of which abuts against an end of the mounting bracket away from the locking tongue, and the other end of the second compression spring abuts against the housing.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] In the present invention, the lock tongue assembly of the door lock is provided with a stroke amplification mechanism, which includes a mounting frame slidably arranged in a shell, and the mounting frame is driven by a first driving member connected to the door handle of the door lock, and a second driving member is abutted at the other end of the mounting frame. The mounting frame drives the second driving member to rotate, so that the connecting component connected to the second driving member drives the lock tongue to extend and retract, and the lock tongue can be extended and retracted by rotating the first driving member at a small angle. The stroke amplification mechanism has stable mechanical transmission and can facilitate opening and closing of the door.

[0024] In the present invention, the lock tongue is rotatably arranged on the connecting component, so that the lock tongue assembly can be applied to door locks of inward-opening doors and outward-opening doors, and has strong versatility; each component is installed in the shell, and the overall lock shell design enhances the strength of the lock tongue assembly and improves the service life; and a locking mechanism is provided, and the locking member of the locking mechanism is movably engaged with the first driving member to limit the rotation of the first driving member, thereby providing a safety function and solving the functional problems of bathroom locks and private room locks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the lock tongue assembly of the door lock of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the lock tongue assembly of the door lock;

[0027] Figure 3 is a schematic structural diagram of a first driving member and a mounting frame;

[0028] Figure 4 An exploded view of the lock tongue and connecting components;

[0029] Figure 5 for Figure 1 Exploded diagram of

[0030] Figure 6 An exploded view of the locking mechanism.

[0031] In the figure:

[0032] 1. housing; 10. slide groove; 11. slot; 12. mounting plate; 120. through hole; 13. fixing plate; 130. square groove;

[0033] 2. first driving member; 20. pushing portion; 21. convex block; 22. first cam; 23. second cam; 24. first slot; 25. second slot;

[0034] 3. stroke amplification mechanism; 30. mounting frame; 300. mounting space; 301. abutment block; 302. mounting groove; 31. second driving member;

[0035] 4. Lock tongue; 40. Connecting groove; 41. Pin shaft;

[0036] 5. Connecting assembly; 50. Connecting piece; 500. Hook; 51. Rotating shaft; 510. Groove; 511. Protruding ring;

[0037] 6. Locking mechanism; 60. Locking member; 61. First locking block; 62. Second locking block; 63. Limiting plate; 630. Limiting groove; 64. Limiting column; 65. Spring;

[0038] 7. First compression spring; 8. Second compression spring. DETAILED DESCRIPTION

[0039] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0040] like Figure 1-Figure 6 As shown, a lock tongue 4 assembly of a door lock includes: a housing 1, a first driving member 2, a stroke amplification mechanism 3, a lock tongue 4, a connecting component 5 and a locking mechanism 6.

[0041] Among them, the shell 1 is used to install various components; the first driving member 2 is rotatably arranged in the shell 1, and both ends of the first driving member 2 are connected to the outside world and are used to connect with the door handle; the stroke amplification mechanism 3 includes a mounting frame 30 and a second driving member 31, the mounting frame 30 is arranged in the shell 1, and the first driving member 2 can drive the mounting frame 30 to slide; the second driving member 31 is rotatably arranged in the shell 1, and the second driving member 31 is against the mounting frame 30; the lock tongue 4 and the connecting component 5, the lock tongue 4 is telescopically arranged on the shell 1, the connecting component 5 is movably arranged in the shell 1, and the connecting component 5 connects the second driving member 31 and the lock tongue 4. Specifically, the first driving member 2 drives the mounting frame 30 to translate in the shell 1 under the rotation of the door handle, and the mounting frame 30 drives the second driving member 31 abutting against the mounting frame 30 to rotate, and the second driving member 31 drives the lock tongue 4 connected to the connecting component 5 to retract and retract, and the large displacement extension and retraction of the lock tongue 4 is achieved by the small angle rotation of the first driving member 2 and the small displacement sliding of the mounting frame 30; when opening the door, only a small angle of the door handle needs to be rotated to open the door, which is convenient to use.

[0042] like Figure 2-3 , Figure 5As shown, the mounting frame 30 has an installation space 300, the first driving member 2 is inserted into the installation space 300, the first driving member 2 is provided with a push portion 20 along its circumference, the mounting frame 30 is provided with an abutment block 301, and the push portion 20 abuts against the abutment block 301; the housing 1 is provided with a slide groove 10, and the abutment block 301 is slidably arranged in the slide groove 10. That is, the housing 1 in this scheme is composed of two detachably connected parts, which is convenient for installing various components. A through groove for the first driving member 2 to extend is provided on the housing 1, which is convenient for the first driving member 2 to be connected to the door handle; the slide grooves 10 are provided on both sides of the housing 1, and the abutment block 301 on the mounting frame 30 is inserted into the slide groove 10, so that the mounting frame 30 is translated along the length direction of the slide groove 10, and the rotation of the driving member is converted into the translation of the mounting frame 30.

[0043] Preferably, the first driving member 2 is provided with a protrusion 21, and both ends of the protrusion 21 are provided with a push portion 20, and both sides of the mounting frame 30 are provided with a mounting groove 302, and abutment blocks 301 extend outward from one side wall of the two mounting grooves 302; the push portion 20 passes through the mounting groove 302 and abuts on the abutment blocks 301. Specifically, the mounting groove 302 on one side of the mounting frame 30 has a notch connected to the mounting groove 302, and during installation, the first driving member 2 is inserted into the mounting groove 302 from the notch of the mounting groove 302, so that the first driving member 2 is installed on the mounting frame 30, and then the mounting frame 30 and the first driving member 2 are installed together in the housing 1; because both sides of the first driving member 2 abut against the abutment blocks 301 on the mounting frame 30, the first driving member 2 can drive the mounting frame 30 to move by forward or reverse rotation (i.e., by lifting or pressing down the door handle connected to the first driving member 2).

[0044] In this embodiment, the second driving member 31 is arranged in a C-shape, and the second driving member 31 is in the installation space 300, that is, in the mounting frame 30. One end of the second driving member 31 is hinged on the housing 1, and the middle part of the second driving member 31 is movably abutted against the end of the mounting frame 30 away from the first driving member 2, and the other end of the second driving member 31 is movably abutted against the connecting component 5. In this solution, the small-angle rotation of the first driving member 2 or the small displacement movement of the mounting frame 30 is converted into a large-stroke movement of the lock tongue 4 by connecting the second driving member 31 arranged in the C-shape with the connecting component 5, which is convenient for opening and closing the door, and the small-amplitude rotation of the first driving member 2 can effectively prevent the excessive rotation of the door handle from causing the entire assembly of the lock tongue 4 to deviate, affecting the unlocking.

[0045] Preferably, a mounting plate 12 is provided at one end of the shell 1 close to the lock tongue 4, and the connecting component 5 is extended and retracted along the length direction of the shell 1 under the restriction of the mounting plate 12 and the shell 1. The lock tongue 4 is rotatably provided on the connecting component 5, and the connecting component 5 includes a connecting member 50 and a rotating shaft 51. A hook 500 is provided at one end of the connecting member 50, and one end (free end) of the second driving member 31 abuts against the hook 500; the other end of the connecting member 50 is connected to the rotating shaft 51; a connecting groove 40 is provided on the lock tongue 4, and one end of the rotating shaft 51 is rotatably provided in the connecting groove 40. That is, the connecting assembly 5 is connected to the second driving member 31 to lock the tongue 4, and the hook 500 on the connecting member 50 can prevent the second driving member 31 from disengaging, thereby ensuring the stability of the mechanical transmission; the lock tongue 4 assembly cooperates with the fixing plate 13 installed on the door, and the lock tongue 4 is rotatably inserted into the through hole 120 on the mounting plate 12. After the direction of the lock tongue 4 is rotated, the fixing plate 13 is installed, and the square groove 130 on the fixing plate 13 limits the rotation of the lock tongue 4, so that the lock tongue 4 can be reversible, and the versatility is strong.

[0046] like Figure 4 As shown, a pin 41 is provided in the connection groove 40, and a groove 510 is provided on the rotating shaft 51 along its circumference, and the pin 41 is clamped in the groove 510. In actual use, two pins 41 are provided, and the rotating shaft 51 is first inserted into the connection groove 40 on the lock tongue 4, and the pin 41 is inserted into the lock tongue 4 from the bottom of the lock tongue 4, and at the same time, the two pins 41 are clamped in the groove 510 on the rotating shaft 51, so that the lock tongue 4 and the rotating shaft 51 are rotatably connected.

[0047] In this embodiment, a first compression spring 7 and a second compression spring 8 are also included. A convex ring 511 is provided at one end of the rotating shaft 51 away from the groove 510. The first compression spring 7 is sleeved on the rotating shaft 51, and one end of the first compression spring 7 abuts on the convex ring 511, and the other end of the first compression spring 7 abuts on the mounting bracket 30; one end of the second compression spring 8 abuts on the end of the mounting bracket 30 away from the lock tongue 4, and the other end of the second compression spring 8 abuts on the housing 1. Specifically, the first compression spring 7 makes the connecting component 5 always contact with the second driving member 31, one end of the convex ring 511 abuts with the connecting member 50, and the other end abuts with the first compression spring 7, and most of the length of the first compression spring 7 is sleeved on the rotating shaft 51 to ensure the smooth extension and retraction of the first compression spring 7; the mounting bracket 30 abuts with the housing 1 through the second compression spring 8, so that the sliding of the mounting bracket 30 is recoverable.

[0048] The bolt 4 assembly of the door lock also includes a locking mechanism 6, which is arranged in the installation space 300. The locking mechanism 6 includes a locking member 60, which is movably arranged on the housing 1. The housing 1 has installation holes on the upper and lower sides. The locking member 60 is inserted into the installation holes. The locking member 60 is provided with a first locking block 61 and a second locking block 62. The first driving member 2 includes a first cam 22 and a second cam 23. The first cam 22 is provided with a first card slot 24, and the second cam 23 is provided with a second card slot 25. The first locking block 61 can be clamped in the first card slot 24, and the second locking block 62 can be clamped in the second card slot 25. The first cam 22 and the second cam 23 are separately arranged. The first cam 22 is rotated by the outdoor door handle, and the second cam 23 is driven by the indoor door handle.

[0049] like Figure 5 and Figure 6 As shown, the locking mechanism 6 also includes a limit plate 63 and a limit column 64. The limit plate 63 is arranged on the shell 1. A slot 11 is provided on the shell 1. The limit plate 63 is detachably inserted in the slot 11, and the limit plate 63 is accommodated in the mounting frame 30. A plurality of limit grooves 630 are provided on the limit plate 63; one end of the limit column 64 is movably arranged in the locking member 60, and the other end of the limit column 64 is arranged in the limit groove 630, and an elastic member is arranged between the limit column 64 and the locking member 60, so that the limit column 64 can be movably arranged in the plurality of limit grooves 630.

[0050] In this solution, the lock tongue 4 assembly of the door lock is designed as an integral lock shell, which improves the strength of the lock tongue 4 assembly and adds a locking mechanism 6, which has a privacy protection function; by setting a stroke amplification mechanism 3, the door handle can be rotated at a small angle and the lock tongue 4 can be extended and retracted with a large stroke, which improves the convenience of opening and closing the door, and can prevent excessive swinging of the lock tongue 4 assembly, thereby increasing the service life; the reversible lock tongue 4 head cooperates with the split fixing plate 13, so that the lock tongue 4 has a reversing function, and has strong versatility.

[0051] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A bolt assembly for a door lock, characterized in that: Included are: case; A first driving member is rotatably disposed in the housing; A stroke amplification mechanism, comprising a mounting frame and a second driving member, wherein the mounting frame is arranged in the housing, and the first driving member can drive the mounting frame to slide; The second driving member is rotatably disposed in the housing, and the second driving member abuts against the mounting frame; A locking tongue and a connecting assembly, wherein the locking tongue is telescopically arranged on the housing; the connecting assembly is movably arranged in the housing, and the connecting assembly connects the second driving member and the locking tongue; The mounting frame has a mounting space, the first driving member is inserted into the mounting space, a push portion is provided on the first driving member along its circumference, an abutment block is provided on the mounting frame, and the push portion abuts against the abutment block; The housing is provided with a slide groove, and the abutment block is slidably arranged in the slide groove; The second driving member is arranged in a C shape, the second driving member is located in the installation space, one end of the second driving member is hinged on the housing, the middle part of the second driving member movably abuts against the end of the mounting frame away from the first driving member, and the other end of the second driving member movably abuts against the connecting assembly; It also includes a second compression spring, one end of which abuts against an end of the mounting bracket away from the locking tongue, and the other end of the second compression spring abuts against the housing.

2. The bolt assembly of a door lock according to claim 1, characterized in that: The first driving member is provided with a protrusion, and the two ends of the protrusion are provided with the pushing parts. The two sides of the mounting frame are provided with mounting grooves, and the side walls of the two mounting grooves extend outwardly to form the abutting blocks; the pushing parts pass through the mounting grooves and abut on the abutting blocks.

3. The bolt assembly of a door lock according to claim 1, characterized in that: The locking tongue is rotatably arranged on the connecting assembly, and the connecting assembly includes a connecting member and a rotating shaft, one end of the connecting member is provided with a hook, and one end of the second driving member abuts against the hook; the other end of the connecting member is connected to the rotating shaft; The locking tongue is provided with a connecting groove, and one end of the rotating shaft is rotatably arranged in the connecting groove.

4. The bolt assembly of a door lock according to claim 3, characterized in that: A pin is arranged in the connecting groove, a groove is arranged on the rotating shaft along its circumference, and the pin is clamped in the groove.

5. The bolt assembly of a door lock according to claim 4, characterized in that: It also includes a first compression spring, a convex ring is provided at one end of the rotating shaft away from the groove, the first compression spring is sleeved on the rotating shaft, one end of the first compression spring abuts against the convex ring, and the other end of the first compression spring abuts against the mounting frame.

6. The bolt assembly of a door lock according to claim 1, characterized in that: It also includes a locking mechanism, which is arranged in the installation space, and the locking mechanism includes a locking member, which is movably arranged on the housing, and the locking member is provided with a first locking block and a second locking block; The first driving member includes a first cam and a second cam. The first cam is provided with a first slot, the second cam is provided with a second slot, the first locking block can be engaged in the first slot, and the second locking block can be engaged in the second slot.

7. The bolt assembly of a door lock according to claim 6, characterized in that: The locking mechanism also includes a limit plate and a limit column. The limit plate is arranged on the shell, and a plurality of limit grooves are arranged on the limit plate. One end of the limit column is movably arranged in the locking member, and the other end of the limit column is arranged in the limit groove.

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