Invisible lock hole structure of mechanical lock

Abstract

The utility model discloses an invisible lock hole structure of a mechanical lock, which comprises a panel and a handle rotatably arranged on the panel, a torsional spring is arranged at the rotational joint of the handle and the panel, a lock hole is formed in the panel in a penetrating manner, and a first movable groove and a second movable groove are respectively formed in the panel. The first movable groove and the second movable groove are distributed in the front side and the rear side of the panel respectively and communicated with each other, a cover plate capable of covering the lock hole is movably arranged between the first movable groove and the second movable groove, a clamping groove is concavely formed in the side, located on the second movable groove, of the cover plate, and a clamping block is movably arranged on the inner side of the panel. The clamping block is provided with two clamping portions capable of being connected with the clamping grooves in a clamped mode in the moving direction of the cover plate in a spaced mode, a first spring is connected between the clamping block and the panel in an abutting mode, the clamping portions are kept in a moving state tending to be matched with the clamping grooves through the first spring, and a shifting block is arranged on the handle and located on the inner side of the panel. The shifting block is provided with a first flange which can rotate along with the shifting block to abut against one side of the clamping block.

Description

Technical Field

[0001] This utility model specifically relates to a concealed keyhole structure for a mechanical lock. Background Technology

[0002] With the continuous advancement of technology, people's requirements for door locks have gradually increased, leading to the emergence of smart locks. Smart locks are improvements on traditional mechanical locks, offering greater intelligence and convenience in terms of user security, identification, and management. Smart locks can be unlocked using fingerprints, magnetic cards, passwords, etc., providing a higher level of security. Although there are multiple unlocking methods, they all essentially rely on mechanical locking mechanisms. Therefore, the lock body usually has an emergency keyhole, allowing the lock to still be unlocked with a key even when the power is off. Currently, the keyhole is generally located at the bottom of the lock body, facilitating key insertion and preventing debris or dust from entering. However, exposed keyholes are prone to being blocked by small animals or children playing with them, and more seriously, they can provide opportunities for criminals. Utility Model Content

[0003] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide a hidden keyhole structure for a mechanical lock.

[0004] A concealed keyhole structure for a mechanical lock includes a panel and a handle rotatably mounted on the panel. A torsion spring is provided at the rotatable connection between the handle and the panel. A keyhole is provided through the panel. The panel has a first movable groove and a second movable groove, which are respectively distributed on the front and rear sides of the panel and are interconnected. A cover plate that can cover the keyhole is movably mounted between the first and second movable grooves. The cover plate has a recessed groove on one side of the second movable groove. A locking block is movably mounted on the inner side of the panel. The movement direction of the locking block is perpendicular to the movement direction of the cover plate. The locking block has two locking parts spaced apart along the movement direction of the cover plate that can engage with the locking groove. A first spring abuts against the panel, so that the locking parts tend to engage with the locking groove. A lever is provided on the handle and on the inner side of the panel. The lever has a first flange that can press against one side of the locking block as it rotates.

[0005] In one embodiment, a second spring is provided between the panel and the cover plate, so that the cover plate is kept in an active state tending to cover the lock hole.

[0006] In one embodiment, two connecting seats are provided at intervals along the movement direction of the cover plate on the inner side of the panel, and guide shafts are respectively threadedly connected to one side of the two connecting seats, and the locking block is movably sleeved on the guide shaft through a linear bearing.

[0007] In one embodiment, the first spring is sleeved on the guide shaft and abuts against the connecting seat and the locking block.

[0008] In one embodiment, a pad is attached to the side of the card block that abuts against the first flange.

[0009] In one embodiment, one end of the handle has a recessed groove, the lever is movably sleeved on one end of the handle by a snap ring, and the inner side of the lever extends into the groove and is provided with a limiting part.

[0010] In one embodiment, the outer side of the toggle block is provided with a second flange and a third flange spaced apart along the circumference, and a limiting post is provided on the rear side of the panel between the second flange and the third flange.

[0011] In summary, the advantages of this utility model over the prior art are:

[0012] This utility model forms a double locking system through the vertical linkage design of the cover plate and the locking block. When the cover plate is installed vertically on the door with the panel, it automatically covers the lock hole due to its own weight. The locking part of the locking block cooperates with the locking groove of the cover plate to further reinforce the position of the cover plate and prevent external force from forcibly opening it, thus realizing the concealment of the lock hole.

[0013] When the cover needs to be opened, the user needs to rotate the handle. When the handle is rotated, the first flange of the lever pushes the locking block, causing the locking part of the locking block to disengage from the slot of the cover. At this time, the user can push the cover to open the lock hole. After opening, the handle is automatically returned to its original position by the torsion spring, and the cover is synchronously reset under the action of the second spring. Attached Figure Description

[0014] Figure 1 This is a perspective view of the concealed keyhole structure of a mechanical lock according to one embodiment of the present invention;

[0015] Figure 2 This is an exploded view of the concealed keyhole structure of a mechanical lock in one embodiment of the present invention;

[0016] Figure 3 This is an assembly diagram of a concealed keyhole structure for a mechanical lock according to one embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0018] like Figures 1 to 3The present invention preferably provides a concealed keyhole structure for a mechanical lock, including a panel 1 and a handle 3 rotatably mounted on the panel 1. A torsion spring 2 is provided at the rotatable connection between the handle 3 and the panel 1. A keyhole 4 is provided through the panel 1. The panel 1 is provided with a first movable groove 5 and a second movable groove 6, which are respectively distributed on the front and rear sides of the panel 1 and are interconnected. A cover plate 7 is movably mounted between the first movable groove 5 and the second movable groove 6 to cover the keyhole 4. The cover plate 7 is located at the second movable groove. A groove 8 is recessed on one side of the moving groove 6. A locking block 9 is movably disposed on the inner side of the panel 1. The moving direction of the locking block 9 is perpendicular to the moving direction of the cover plate 7. The locking block 9 is provided with two locking parts 10 that can engage with the groove 8 at intervals along the moving direction of the cover plate 7. A first spring 11 abuts between the locking block 9 and the panel 1. The first spring 11 keeps the locking parts 10 in a moving state that tends to cooperate with the groove 8. A lever 12 is provided on the handle 3 and located on the inner side of the panel 1. The lever 12 is provided with a first flange 13 that can press against one side of the locking block 9 as it rotates.

[0019] Specifically, through the vertical linkage design of the cover plate and the locking block, a double locking is formed. When the cover plate is installed vertically on the door with the panel, it automatically covers the lock hole due to its own weight. The locking part of the locking block cooperates with the locking groove of the cover plate to further reinforce the position of the cover plate and prevent external force from forcibly opening it, thus realizing the concealment of the lock hole.

[0020] When the cover needs to be opened, the user needs to rotate the handle. When the handle is rotated, the first flange of the lever pushes the locking block, causing the locking part of the locking block to disengage from the slot of the cover. At this time, the user can push the cover to open the lock hole. After opening, the handle is automatically returned to its original position by the torsion spring, and the cover is synchronously reset under the action of the second spring.

[0021] Furthermore, the latching part of the latch block has two vertically spaced parts. When the latching part located at the lower part of the latch block engages with the latch groove, the cover plate is in a hidden state that covers the lock hole. When the latching part located at the upper part of the latch block engages with the latch groove, the cover plate is in an open state that opens the lock hole.

[0022] Furthermore, when the cover is pushed open to open the lock hole, the user needs to keep pressing the handle until the upper part of the locking block is aligned with the slot of the cover. If the upper part of the locking block is not aligned with the cover and the handle is released, both the handle and the locking block will elastically reset, resulting in the inability to open the cover and unlock the lock hole normally.

[0023] Preferably, the locking part of the locking block has several locking parts spaced vertically, and only the uppermost locking part of the locking parts cooperates with the locking groove of the cover plate to make the cover plate fully open the lock hole, thereby effectively ensuring that the opening of the cover plate requires the linkage handle, thus increasing safety.

[0024] Furthermore, a second spring 14 is provided between the panel 1 and the cover plate 7, which keeps the cover plate 7 in an active state tending to cover the lock hole 4. The second spring also allows the cover plate to remain closed, covering the lock hole, without external force, and enables the cover plate to quickly return to its original position.

[0025] Furthermore, two connecting seats 15 are provided at intervals along the movement direction of the cover plate 7 on the inner side of the panel 1. Guide shafts 16 are respectively threadedly connected to one side of the two connecting seats 15. The locking block 9 is movably sleeved on the guide shaft 16 through a linear bearing. Thus, the cooperation between the guide shaft and the linear bearing ensures the accuracy of the linear movement of the locking block; the threaded connection between the connecting seat and the guide shaft simplifies the assembly process.

[0026] Furthermore, the first spring 11 is sleeved on the guide shaft 16 and abuts against the connecting seat 15 and the locking block 9.

[0027] Furthermore, a soft pad is attached to the side of the locking block 9 that abuts against the first flange 13. This soft pad reduces noise from the collision between the locking block and the lever, thus extending the service life.

[0028] Furthermore, one end of the handle 3 has a recessed groove 17, and the lever 12 is movably sleeved on one end of the handle 3 via a snap ring. The inner side of the lever 12 extends into the groove 17 and is provided with a limiting part 18. This achieves a detachable connection between the lever and the handle, facilitating the disassembly, replacement, and maintenance of the lever.

[0029] Furthermore, the outer side of the lever 12 is provided with a second flange 19 and a third flange 20 spaced apart along the circumference, and a limiting post 21 is provided on the rear side of the panel 1 between the second flange 19 and the third flange 20. The limiting post cooperates with the second flange and the third flange of the lever to limit the rotation angle of the handle and prevent excessive rotation from damaging the mechanism.

[0030] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A concealed keyhole structure for a mechanical lock, comprising a panel (1) and a handle (3) rotatably mounted on the panel (1), wherein a torsion spring (2) is provided at the rotatable connection between the handle (3) and the panel (1), and a keyhole (4) is provided through the panel (1), characterized in that: The panel (1) is provided with a first movable groove (5) and a second movable groove (6), which are respectively distributed on the front and rear sides of the panel (1) and are interconnected. A cover plate (7) that can cover the lock hole (4) is movably arranged between the first movable groove (5) and the second movable groove (6). The cover plate (7) has a recessed slot (8) on one side of the second movable groove (6). A locking block (9) is movably arranged on the inner side of the panel (1). The moving direction of the locking block (9) is the same as that of the cover plate (7). The movement direction is vertically set. The card block (9) is provided with two card engaging parts (10) that can engage with the card slot (8) at intervals along the movement direction of the cover plate (7). A first spring (11) abuts between the card block (9) and the panel (1). The first spring (11) causes the card engaging parts (10) to maintain an active state that tends to cooperate with the card slot (8). A lever (12) is provided on the handle (3) and located inside the panel (1). The lever (12) is provided with a first flange (13) that can press against one side of the card block (9) as it rotates.

2. The concealed keyhole structure of a mechanical lock according to claim 1, characterized in that: A second spring (14) is provided between the panel (1) and the cover plate (7), so that the cover plate (7) is kept in an active state tending to cover the lock hole (4).

3. The concealed keyhole structure of a mechanical lock according to claim 1, characterized in that: The inner side of the panel (1) is provided with two connecting seats (15) spaced apart along the movement direction of the cover plate (7). A guide shaft (16) is inserted into one side of each of the two connecting seats (15) by threaded engagement. The locking block (9) is movably sleeved on the guide shaft (16) by a linear bearing.

4. The concealed keyhole structure of a mechanical lock according to claim 3, characterized in that: The first spring (11) is sleeved on the guide shaft (16) and abuts between the connecting seat (15) and the locking block (9).

5. The concealed keyhole structure of a mechanical lock according to claim 3, characterized in that: The side of the card block (9) that is pressed against the first flange (13) is covered with a soft pad.

6. The concealed keyhole structure of a mechanical lock according to claim 1, characterized in that: The handle (3) has a recessed groove (17) at one end, and the lever (12) is movably sleeved on one end of the handle (3) by a snap ring. The inner side of the lever (12) extends into the groove (17) and is provided with a limiting part (18).

7. The concealed keyhole structure of a mechanical lock according to claim 1, characterized in that: The outer side of the push block (12) is provided with a second flange (19) and a third flange (20) spaced apart along the circumference, and the rear side of the panel (1) is provided with a limiting post (21) between the second flange (19) and the third flange (20).

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