Invisible door lock body

Abstract

The utility model discloses an invisible door lock body which comprises a lock shell, a buckle plate is fixedly installed on one side of the lock shell, fixing blocks are fixedly connected to the positions, close to one side, of the inner top and the inner bottom of the lock shell, guide rods are fixedly installed at the positions, close to the center, of one sides of the two fixing blocks, one ends of the two guide rods are fixedly connected with one side of the buckle plate, and the other ends of the two guide rods are fixedly connected with the other side of the buckle plate. One side of the surface of each guide rod is slidably connected with a guide block, and a connecting plate is fixedly connected between the two guide blocks. According to the invisible door lock body, through mutual cooperation of the guide rod, the guide block, the connecting plate, the contact piece, the tension spring, the poking piece, the pushing piece and the contact wheel, when the lock body is used, the poking piece is rotated to enable the pushing piece to rotate, so that the contact wheel rotates along the surface of the contact piece and leaves the arc-shaped surface of the contact piece, and then the spring bolt is contracted through resetting of the tension spring; through contact between the contact wheel and the contact piece, abrasion of parts in the lock body can be reduced, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of concealed door lock technology, specifically to a concealed door lock body. Background Technology

[0002] The lock body is one of the components of a lock. There are many types of lock bodies, the most common being one-way lock bodies, three-way lock bodies, and four-way lock bodies. They are generally used on security doors to perform basic security functions. The lock cylinder controls the operation of the lock body, which is responsible for opening and locking the door / window, playing a crucial role in security. Lock bodies are also frequently used in concealed doors.

[0003] For example, the Chinese authorized patent with announcement number CN209384795U (a lock body structure) has only one unlocking rod. When it rotates forward, it acts on the slot to retract the bolt into the body. When it rotates backward, it can exit the slot and rotate freely without retracting the bolt. This can meet the needs of reverse locking locks, and the structure is simple and reliable. However, the internal unlocking rod continuously pushes the bolt to move during rotation. Over time, this may cause the internal structure of the lock body to be easily worn, resulting in the lock being unable to open or close normally, shortening the service life of the lock body, and making it inconvenient to use. Utility Model Content

[0004] The purpose of this utility model is to provide a concealed door lock body to solve the problem mentioned in the background art that the internal unlocking rod continuously pushes the bolt to move during rotation, which may cause the internal structure of the lock body to be easily worn over a long period of time, resulting in the lock being unable to open or close normally, shortening the service life of the lock body, and making it inconvenient to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a concealed door lock body, including a lock shell, a strike plate fixedly installed on one side of the lock shell, fixing blocks fixedly connected to one side of the top and bottom of the lock shell, guide rods fixedly installed near the center of one side of each of the two fixing blocks, one end of each guide rod fixedly connected to one side of the strike plate, guide blocks slidably connected to one side of each guide rod, a connecting plate fixedly connected between the two guide blocks, a lock tongue fixedly installed at the center of one side of the connecting plate, one side of the lock tongue extending through to the outside of the strike plate, limit blocks fixedly installed at the top and bottom of each of the two guide blocks, and one of the two fixing blocks... A first limiting rod is fixedly installed at the top and bottom positions on one side of the buckle plate. A second limiting rod is fixedly installed at the top and bottom positions on one side of the buckle plate. A rubber block is fixedly installed at the opposite end of the first and second limiting rods. A contact element is fixedly installed at the center of the other side of the connecting plate. A tension spring is sleeved on one side of the surface of the guide rod. A toggle element is movably installed at one side of the center inside the lock housing. A pusher element is fixedly installed on the surface of the toggle element. A contact wheel is movably installed at one end of the pusher element. A connecting post is fixedly installed at the bottom position on one side of the lock housing. A return spring is fixedly installed on the surface of the connecting post.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This concealed door lock body, through the cooperation of guide rods, guide blocks, connecting plates, contact elements, tension springs, actuating elements, pushing elements, and contact wheels, allows the lock body to operate smoothly. Rotating the actuating element causes the pushing element to rotate, which in turn causes the contact wheel to rotate along the surface of the contact element and move away from its curved surface. The tension spring's restoring action then retracts the bolt. The contact wheel's contact with the contact element reduces wear on internal parts. The simple structure, along with the cooperation of the limiting block, first limiting rod, second limiting rod, and contact wheel, effectively limits and buffers the bolt during resetting or extension, resulting in a quiet operation, extended lifespan, and ease of use. Attached Figure Description

[0008] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0009] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0010] Figure 3 This is a three-dimensional structural view of the actuating and pushing components of this utility model;

[0011] Figure 4 This is a three-dimensional view of the guide block and connecting plate of this utility model.

[0012] In the diagram: 1. Lock housing; 2. Buckle plate; 3. Fixing block; 4. Guide rod; 5. Guide block; 6. Limiting block; 7. First limiting rod; 8. Second limiting rod; 9. Connecting plate; 10. Lock tongue; 11. Contact element; 12. Tension spring; 13. Rubber block; 14. Actuating element; 15. Pushing element; 16. Contact wheel; 17. Square groove; 18. Connecting post; 20. Return spring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: a concealed door lock body, wherein one side of each of the two limiting blocks 6 contacts the two rubber blocks 13 set on the left side, which can play a role in limiting and buffering the internal structure of the lock body.

[0015] Mounting holes are provided on both the top and bottom sides of one side of the snap plate 2, making it easy to install the lock body on the hidden door.

[0016] One end of the tension spring 12 is fixedly connected to one side of the guide block 5, and the other end of the tension spring 12 is fixedly connected to one side of the fixing block 3. The guide block 5 can be reset by pulling the tension spring 12.

[0017] One side of the contact wheel 16 contacts the arc-shaped surface on one side of the contact member 11. Through the contact wheel 16 contacting the contact member 11, the contact member 11 can be abutted to drive the locking tongue 10 to move to one side.

[0018] The front end of the toggle member 14 extends through the outside of the lock housing 1, and a square groove 17 is provided on the front surface of the toggle member 14, which can be used to install the handle.

[0019] The top of the return spring 20 contacts the bottom of the pusher 15, and the bottom of the return spring 20 contacts the inner bottom of the lock case 1. The return spring 20 can reset the toggle member 14 after rotation.

[0020] Working principle: After the lock body is installed on the hidden door, the actuating component 14 and the pushing component 15 are in their initial state under the action of the return spring 20. The contact wheel 16 on one side of the pushing component 15 contacts the arc surface on one side of the contact component 11. At this time, the tension spring 12 is stretched, and the bolt 10 is in the extended state. If it is necessary to unlock, the pushing component 15 is moved downward by rotating the actuating component 14. At this time, the contact wheel 16 slides along the arc surface and leaves the contact component 11. Since the pushing component 15 releases the limit on the contact component 11, the tension spring 12 pulls the guide block 5 to slide on the guide rod 4. The two guide blocks 5 simultaneously drive the bolt 10 to retract through the connecting plate 9. After unlocking is completed, the pushing component 15 is reset by the return spring 20.

[0021] In summary, this concealed door lock body, through the mutual cooperation of guide rod 4, guide block 5, connecting plate 9, contact element 11, tension spring 12, actuating element 14, pushing element 15, and contact wheel 16, allows the lock body to operate smoothly. Rotating the actuating element 14 causes the pushing element 15 to rotate, thereby causing the contact wheel 16 to rotate along the surface of the contact element 11 and move away from its arc-shaped surface. The tension spring 12 then retracts the bolt 10. The contact between the contact wheel 16 and the contact element 11 reduces wear on internal parts. The structure is simple, and the mutual cooperation of the limiting block 6, first limiting rod 7, second limiting rod 8, and contact wheel 16 provides limiting and buffering for the bolt 10 during resetting or extension, resulting in a quiet lock body, extended service life, and ease of use.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concealed door lock body, comprising a lock shell (1), characterized in that: A snap plate (2) is fixedly installed on one side of the lock housing (1). Fixing blocks (3) are fixedly connected to one side of the top and bottom of the lock housing (1). Guide rods (4) are fixedly installed near the center of one side of each of the two fixing blocks (3). One end of each guide rod (4) is fixedly connected to one side of the snap plate (2). Guide blocks (5) are slidably connected to one side of the surface of each of the two guide rods (4). A connecting plate (9) is fixedly connected between the two guide blocks (5). A lock tongue (10) is fixedly installed at the center of one side of the connecting plate (9). One side of the lock tongue (10) extends to the outside of the snap plate (2). Limiting blocks (6) are fixedly installed at the top and bottom of each of the two guide blocks (5). First limiting blocks are fixedly installed near the top and bottom of one side of each of the two fixing blocks (3). The first limit rod (7) and the second limit rod (8) are fixedly installed at the top and bottom of one side of the buckle plate (2). The first limit rod (7) and the second limit rod (8) are fixedly installed at opposite ends of the first limit rod (7) and the second limit rod (8). The contact member (11) is fixedly installed at the center of the other side of the connecting plate (9). The guide rod (4) is fitted with a tension spring (12) on one side of the surface. The lock housing (1) is movably installed with a toggle member (14) on one side of the center. The toggle member (14) is fixedly installed with a push member (15) on the surface. The push member (15) is movably installed with a contact wheel (16) at one end. The lock housing (1) is fixedly installed with a connecting column (18) on one side of the bottom. The connecting column (18) is fixedly installed with a return spring (20).

2. The concealed door lock body according to claim 1, characterized in that: One side of each of the two limiting blocks (6) contacts the two rubber blocks (13) set on the left side.

3. The concealed door lock body according to claim 1, characterized in that: Mounting holes are provided on both the top and bottom sides of the buckle plate (2).

4. The concealed door lock body according to claim 1, characterized in that: One end of the tension spring (12) is fixedly connected to one side of the guide block (5), and the other end of the tension spring (12) is fixedly connected to one side of the fixing block (3).

5. A concealed door lock body according to claim 1, characterized in that: One side of the contact wheel (16) is in contact with the arc-shaped surface provided on one side of the contact member (11).

6. A concealed door lock body according to claim 1, characterized in that: The front end of the actuating element (14) extends through the outside of the lock housing (1), and a square groove (17) is provided on the front surface of the actuating element (14).

7. The concealed door lock body according to claim 1, characterized in that: The top of the reset spring (20) contacts the bottom of the pusher (15), and the bottom of the reset spring (20) contacts the inner bottom of the lock case (1).

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