CN110630093A - A door lock with a safety unlocking device - Google Patents

Abstract

The invention discloses a door lock with a safety unlocking device, which comprises a lock body installed in the door body, a square shaft and a handle, one end of the square shaft is inserted into the lock body and linked with the lock body, the other end of the square shaft extends out of the door body, and the handle A clutch assembly is installed inside. When the safety unlocking device is in the locked state, the clutch assembly is engaged with the square shaft, and the square shaft is linked with the handle to open the door lock. When the safety unlocking device is in the unlocked state, the clutch assembly is disengaged from the square shaft, and the square shaft The door lock cannot be opened if it is in a free state with the handle. In the door lock with safety unlocking device described in the present invention, the square shaft and the push rod are designed as a clutch structure, the push rod is pushed, the push rod cooperates with the square shaft, and the handle is turned to drive the door lock to unlock, otherwise the rear handle of the door lock is In the free state, it can effectively prevent the potential safety hazard of criminals opening the door through the cat's eye, and greatly improve the security of the smart door lock. The door lock has a simple structure, easy installation, and high installation efficiency.

Description

A door lock with a safety unlocking device

technical field

The invention relates to the technical field of door locks, in particular to a door lock with a safety unlocking device.

Background technique

With the development and progress of the times, smart home has become the trend of the times. Traditional household items will gradually withdraw from the historical stage, and smart home has become a life concept in the new era. With the popularity of smart door locks, smart door locks can better protect people's property safety to a certain extent, but smart door locks also have certain limitations.

The anti-peephole function of the smart door lock is mainly reflected in preventing thieves from opening the inner door lock through the peephole hole, and then opening the door. The anti-peephole function of the smart door lock increases the security of the door lock. At present, the door locks realize the anti-peephole function mainly into two types: mechanical anti-peephole and electronic anti-peephole. The realization of electronic anti-peephole function is mainly through the relevant sensor device and switch clutch in the inner door lock. When the human body presses a certain key Start the door opening function; the realization of mechanical anti-peephole is to set a mechanical switch and structure on the handle or panel, and then realize the anti-peephole function.

The existing mechanical anti-peephole door lock has complex structure and difficult operation, which greatly increases the cost of the door lock.

Contents of the invention

The object of the present invention is to provide a door lock with a safety unlocking device to solve the technical problems mentioned in the background art.

In order to achieve the above object, a specific technical solution of a door lock with a safety unlocking device of the present invention is as follows:

A door lock with a safety unlocking device, comprising a lock body installed in the door body, a square shaft and a handle, one end of the square shaft is inserted into the lock body and interlocked with the lock body, the other end of the square shaft extends out of the door, and a clutch assembly is arranged in the handle , when the safety unlocking device is in the locked state, the clutch assembly is engaged with the square shaft, and the square shaft is linked with the handle to open the door lock. When the safety unlocking device is in the unlocked state, the clutch assembly is disengaged from the square shaft, and the square shaft is free from the handle The state cannot open the door lock.

Further, the clutch assembly includes a push rod, a limit post is provided at the end of the push rod, the section of the limit post is triangular, quadrangular, or hexagonal, and a stop for accommodating the push rod is provided at the end of the square shaft. Push the push rod to move the limit post into the limit hole, so that the square shaft and the push rod are linked.

Further, the opening of the limiting hole is a conical surface, and the diameter of the conical surface gradually increases along the direction approaching the opening.

Further, an extension column is arranged on the end surface of the limiting column coaxially, and the extension column is placed in the limiting hole. The section of the extension column is circular, and the section of the extension column is an inscribed circle of the section of the limiting column.

Further, the door lock also includes a guide block, a circular through hole is set in the guide block, a cylindrical coupling post is set at the end of the square shaft, a limit hole is set on the coupling post, the coupling post is inserted into the guide block, and the other part of the guide block A push rod is arranged on one side, and the limit post of the push rod is inserted into the guide block.

Further, the door lock also includes an interlocking structure for interlocking the push rod and the handle. The handle includes a handle front cover and a handle back cover that are covered together. The front cover of the handle is provided with a through hole, and the end of the push rod is provided with a top cap, the top cap is placed in the through hole.

Further, the top cap is fixedly connected with the button, the button is placed in the through hole, and the button is provided with an interlocking structure, the interlocking structure is a guide rib arranged on the outer wall of the button and a guide groove arranged at the through hole, or an interlocking structure The structure is a guide groove arranged on the outer wall of the button and a projection arranged at the through hole.

Further, the interlocking structure is a guide rib provided on the outer wall of the top cap and a guide groove provided at the through hole, or the interlocking structure is a guide groove provided on the outer wall of the top cap and a protrusion provided at the through hole.

Further, the door lock also includes an inner door panel, the guide block passes through the inner door panel and is fixed to the back cover of the handle, the back cover of the handle is a hollow structure, and an annular partition is arranged inside the back cover of the handle, and the limit column of the push rod passes through The annular partition is inserted into the guide block, the push rod between the annular partition and the top cap is sleeved with a second return spring, and a gasket is arranged on the side of the partition away from the direction of the guide block, and the end of the second return spring is in contact with the gasket. chip connection.

Further, the side wall of the square shaft is provided with an outward positioning protrusion, the positioning protrusion abuts against the guide block, the square shaft is sleeved with a first return spring, one end of the first return spring is connected with the positioning protrusion, and the first The other end of the return spring abuts against the lock body.

A kind of door lock with safety unlocking device of the present invention has the following advantages:

In the door lock with safety unlocking device described in the present invention, the square shaft and the push rod are designed as a clutch structure, the push rod is pushed, the push rod cooperates with the square shaft, and the handle is turned to drive the door lock to unlock, otherwise the rear handle of the door lock is In the free state, it can effectively prevent the potential safety hazard of criminals opening the door through the cat's eye, and greatly improve the security of the smart door lock. The door lock has a simple structure, easy installation, and high installation efficiency.

Description of drawings

Fig. 1 is the explosion diagram of door lock of the present invention;

Fig. 2 is a sectional view of the door lock of the present invention;

Fig. 3 is the structural representation of square shaft of the present invention;

Fig. 4 is a structural schematic diagram of the push rod of the present invention.

Explanation of symbols in the figure: 1, lock body; 11, insertion hole; 2, inner door panel; 3, handle rear cover; 31, handle front cover; 4, square shaft; 41, coupling column; 42, limit hole; 43 , cone surface; 44, positioning bump; 5, first return spring; 6, guide block; 7, push rod; 71, limit post; 72, top cap; 8, button; 9, second return spring; 10 , Gasket.

Detailed ways

In order to better understand the purpose, structure and function of the present invention, a door lock with a safety unlocking device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-2, the door lock with a safety unlocking device of the present invention includes a lock body 1, a square shaft 4 and a handle installed in the door body, one end of the square shaft 4 is inserted into the lock body 1 and the lock body 1 is linked , the other end of the square shaft 4 protrudes out of the door, and a clutch assembly is installed in the handle. When the safety unlocking device is in the locked state, the clutch assembly engages with the square shaft 4, and the square shaft 4 is linked with the handle to open the door lock. When the safety unlocking device is in the During the unlocked state, the clutch assembly is disengaged from the square shaft 4, and the square shaft 4 and the handle are in a free state and cannot open the door lock.

The clutch assembly includes a push rod 7. As shown in Figure 4, the end of the push rod 7 is provided with a limit post 71. A limit hole 42 for accommodating the push rod 7 is provided, and the push rod 7 is pushed to move the limit post 71 into the limit hole 42 so that the square shaft 4 is matched with the lock body 1 .

The opening of the limiting hole 42 is a tapered surface 43 , and the diameter of the tapered surface 43 gradually increases along the direction approaching the opening, so that the limiting post 71 can be smoothly inserted into the limiting hole 42 .

In addition, the limit post 71 is provided with an extension post on the coaxial center, and the extension post is placed in the limit hole 42. The section of the extension post is circular. Preferably, the section of the extension post is within the section of the stop post 71. Connect the circle, by setting the extension column, when the push rod 7 is not pressed, the push rod 7 will be separated from the square shaft 4, and when the push rod 7 is pressed, the push rod 7 will be inserted into the limit hole 42 more smoothly, and the push rod 7 will be connected to the square shaft 4 to achieve linkage.

The clutch assembly also includes a guide block 6, a circular through hole is arranged in the guide block 6, a cylindrical coupling post 41 is arranged at the end of the square shaft 4, a limit hole 42 is arranged on the coupling post 41, the coupling post 41 is inserted into the guide block 6, and the guide The other side of the block 6 is provided with a push rod 7, and the end of the push rod 7 is inserted into the guide block 6 from the other side. By controlling the distance between the push rod 7 and the square shaft 4, the clutch between the push rod 7 and the square shaft 4 is realized. And then the linkage between the square shaft 4 and the push rod 7 is realized.

The handle includes a handle rear cover 3 and a handle front cover 31, the door lock also includes an inner door panel 2, the guide block 6 passes through the inner door panel 2 and is fixed to the handle rear cover 3, the handle front cover 31 covers the handle rear cover 3, and the handle The rear cover 3 is a hollow structure, the handle rear cover 3 is provided with an annular partition, the limit column 71 of the push rod 7 is inserted into the guide block 6 through the annular partition, the handle front cover 31 is provided with a through hole, and the end of the push rod 7 is provided with a top The cap 72, the top cap 72 is placed in the through hole, and the interlocking structure is set on the top cap 72, so that the push rod 7 and the handle are interlocked.

The interlocking structure is a guide rib arranged on the outer wall of the top cap 72 and a guide groove arranged at the through hole of the handle front cover 31, or an interlocking structure is a guide groove arranged on the outer wall of the top cap 72 and a guide groove arranged on the handle front cover 31. Bumps at vias. There are a plurality of guiding ribs or guiding grooves, which are evenly distributed on the outer wall of the top cap 72 , and the guiding ribs or guiding grooves are arranged along a direction parallel to the axis of the push rod 7 .

A second return spring 9 is sleeved on the push rod 7 between the partition and the top cap 72, and a gasket 10 is provided on the side of the partition away from the direction of the guide block 6, and the end of the second return spring 9 is connected to the gasket 10 . Push the button 8, and the coupling column 41 of the push rod 7 is placed in the limit hole 42, so that the push rod 7 and the square shaft 4 realize linkage.

In addition, the end of the push rod 7 is fixedly connected to the button 8, the button 8 is placed in the through hole, and the button 8 is provided with an interlocking structure. The guide groove at the place, or the linkage structure is a guide groove arranged on the outer wall of the button 8 and a bump arranged at the through hole, or the button 8 is a quadrangle, hexagon and other non-circular structures, which can also prevent When the lock is unlocked, the button rotates to cause the failure of unlocking.

In order to prevent the square shaft 4 from detaching from the guide block 6, as shown in Figure 3, the side wall of the square shaft 4 is provided with an outward positioning protrusion 44, and the positioning protrusion 44 abuts against the guide block 6, and the square shaft 4 is sleeved with a first Return spring 5, one end of the first return spring 5 is connected with the positioning projection 44, and the other end of the first return spring 5 is in contact with the lock body 1, so that when the push rod 7 is separated from the square shaft 4, the square shaft 4 always withstands The reversing module can therefore ensure that the square shaft 4 and the guide block 6 will not be disconnected.

When assembling, install the gasket 10, the second return spring 9, and the push rod 7 together with the handle back cover 3 in turn to form an assembly, so that one end of the second return spring 9 is attached to the gasket 10, and the other end is attached to the push rod. 7 on top cap 72. Install the button 8 and the handle front cover 31 on the above-mentioned assembly, so that the button 8 is subjected to the pre-tightening force of the second return spring 9 and protrudes outward, and the handle is installed; if the button 8 is pressed and then released, the button 8 can rely on The pre-tightening force of the second back-moving spring 9 automatically rebounds and resets. Secondly, the guide block 6, the inner door panel 2 and the handle are installed and fixed, wherein the connection between the guide block 6 and the handle can be fixed by screwing from the side, or by other means; again, the guide of the inner door panel 2 The square shaft 4 and the first return spring 5 are loaded into the block 6 in turn, so that the coupling column 41 on the square shaft 4 is inserted into the round hole of the guide block 6, and one end of the first return spring 5 is attached to the positioning protrusion on the square shaft 4. on the platform 44; finally, the inner door panel 2 is installed on the door body, so that the square shaft 4 is inserted into the corresponding insertion hole 11 of the lock body 1 through the through hole on the door body, and one end of the first return spring 5 is supported on the square shaft On the positioning boss 44 on the 4, the other end bears on the lock body 1, so that the square shaft 4 withstands the guide block 6 all the time, so it can be ensured that the square shaft 4 and the guide block 6 will not be disconnected.

After the installation is completed, after the button 8 is pressed, the limit post 71 on the push rod 7 is inserted into the limit hole 42 on the square shaft 4 to realize the linkage between the handle and the lock body 1, and the door can be opened by pressing the handle down; Press the button 8 and directly press down the handle, because the push rod 7 and the square shaft 4 are in a free state, so the handle and the lock body 1 are not linked, and the door cannot be opened.

The door lock with a safety unlocking device, the square shaft 4 and the push rod 7 are designed as a clutch structure, the push rod 7 is pushed, the push rod 7 cooperates with the square shaft 4, and the handle is turned to drive the door lock to unlock, otherwise the rear handle of the door lock will be damaged. It is in a free state, which can effectively prevent the potential safety hazard of criminals opening the door through the cat's eye, and greatly improve the security of the smart door lock. The door lock has a simple structure, is easy to install, and has high installation efficiency.

It can be understood that the present invention is described through some embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and examples may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. A door lock with a safety unlocking device, comprising a lock body (1), a square shaft (4) and a handle installed in the door body, one end of the square shaft (4) is inserted into the lock body (1) and connected to the lock body (1) ), the other end of the square shaft (4) protrudes out of the door, and a clutch assembly is set inside the handle, which is characterized in that, when the safety unlocking device is in a locked state, the clutch assembly is engaged with the square shaft, and the square shaft (4) is linked with the handle To open the door lock, when the safety unlocking device is in the unlocked state, the clutch assembly is disengaged from the square shaft (4), and the square shaft (4) and the handle are in a free state and cannot open the door lock. 2. The door lock with safety unlocking device according to claim 1, characterized in that, the clutch assembly includes a push rod (7), the end of the push rod (7) is provided with a limit column (71), and the square shaft The end of (4) is provided with a limit hole (42) that cooperates with the limit column (71), and the push rod (7) is pushed to move the limit column (71) into the limit hole (42), so that the square shaft (4 ) is linked with the push rod (7). 3. The door lock with safety unlocking device according to claim 2, characterized in that, the cross-section of the limiting post (71) is triangular, quadrangular or hexagonal, and the opening of the limiting hole (42) It is a conical surface (43), and the diameter of the conical surface (43) increases gradually along the direction approaching the opening. 4. The door lock with a safety unlocking device according to claim 2, characterized in that, the end face of the limit post (71) is coaxially provided with an extension column, and the extension column is placed in the limit hole (42), The section of the extension column is circular, and the section of the extension column is the inscribed circle of the section of the limiting column (71). 5. The door lock with safety unlocking device according to claim 2, characterized in that, the door lock also comprises a guide block (6), a circular through hole is arranged in the guide block (6), and the square shaft (4) A cylindrical coupling column (41) is provided at the end, a limit hole (42) is provided on the coupling column (41), the coupling column (41) is inserted into the guide block (6), and a push rod is provided on the other side of the guide block (6) (7), the limit column (71) of push rod (7) is inserted in the guide block (6). 6. The door lock with a safety unlocking device according to claim 2, characterized in that, the door lock also includes an interlocking structure for the push rod (7) to be linked with the handle, and the handle includes a cover that is combined together Handle front cover (31) and handle back cover (3), handle front cover (31) is provided with through hole, push rod (7) end is provided with top cap (72), and top cap (72) places in the through hole. 7. The door lock with safety unlocking device according to claim 6, characterized in that, the top cap (72) is fixedly connected with the button (8), the button (8) is placed in the through hole, and the button (8) An interlocking structure is arranged on the top, the interlocking structure is a guide rib arranged on the outer wall of the button (8) and a guide groove arranged at the through hole, or the interlocking structure is a guide groove arranged on the outer wall of the button (8) and a guide groove arranged on the through hole bumps at. 8. The door lock with safety unlocking device according to claim 6, characterized in that, the interlocking structure is a guide rib arranged on the outer wall of the top cap (72) and a guide groove arranged at the through hole, or a link The movable structure is a guide groove arranged on the outer wall of the top cap (72) and a projection arranged at the through hole. 9. The door lock with safety unlocking device according to claim 6, characterized in that, the door lock also includes an inner door panel (2), and the guide block (6) passes through the inner door panel (2) and the handle The cover (3) is fixed, the handle back cover (3) is a hollow structure, an annular partition is arranged inside the handle rear cover (3), and the limit post (71) of the push rod (7) passes through the annular partition and is inserted into the guide block (6 ), a second return spring (9) is sleeved on the push rod (7) between the annular partition and the top cap (72), and a gasket (10) is provided on the side of the partition away from the direction of the guide block (6) , the end of the second return spring (9) is connected with the washer (10). 10. The door lock with safety unlocking device according to claim 5, characterized in that, the side wall of the square shaft (4) is provided with an outward positioning projection (44), and the positioning projection (44) and the guide block (6) Contact, the first return spring (5) is sheathed on the square shaft (4), one end of the first return spring (5) is connected with the positioning bump (44), and the other end of the first return spring (5) abut against the lock body (1).