CN215255340U

CN215255340U - Locking mechanism for indoor door lock

Info

Publication number: CN215255340U
Application number: CN202120039651.7U
Authority: CN
Inventors: 莫耀祥
Original assignee: Jiangmen Camax Hardware Corp ltd
Current assignee: Jiangmen Camax Hardware Corp ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-21
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses a locking mechanical system for indoor lock installs in the casing: the thumb wheel is connected with a twisting handle, a plurality of square through holes are uniformly distributed on the thumb wheel, and a convex column is arranged in the middle of the thumb wheel; the shifting block assembly is connected with the lock cylinder and comprises a shifting block which is inserted on the convex column and can freely rotate, a shifting rod extends on the shifting block, a square hole is formed in the shifting block, a square block is inserted in the square hole, a cover plate is arranged on one side of the square hole, an elastic element is arranged between the cover plate and the square block, a convex block which can be inserted in the square through hole extends from one end of the square block, one side of the convex block is a straight surface, and the other side of the convex block is an inclined surface; one end of the transmission piece is connected with the lock tongue, and the other end of the transmission piece is provided with a groove for accommodating the deflector rod. The door body rotates the thumb wheel through the twisting handle under the state of opening, can't drive the shifting block and rotate together for the unable closure of door body prevents that child from just can locking the door body through rotating the twisting handle in indoor maloperation, avoids unexpected emergence.

Description

Locking mechanism for indoor door lock

Technical Field

The utility model relates to a lock, especially a locking mechanical system for indoor lock.

Background

The indoor lock of tradition all is provided with the lock core and twists the hand usually, thereby the user can both control the spring bolt through lock core or twist the hand and stretch out the locking of the door body indoor, but the biggest drawback of this lock body is, just can lock the door body through rotating the twist hand when child is indoor maloperation, leads to the door body can't open, the accident appears easily, so develop the indoor lock that can only carry out the locking of the door body through the lock core and has proposed people's research schedule.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an indoor lock that door body locking can only be carried out through the lock core.

The utility model discloses a locking mechanical system for indoor lock of first aspect embodiment, it includes the casing, install in the casing:

the shifting wheel is connected with a twisting handle, a plurality of square through holes are uniformly distributed on the shifting wheel, and a convex column is arranged in the middle of the shifting wheel;

the shifting block assembly is connected with the lock cylinder and comprises a shifting block which is inserted on the convex column and can freely rotate, a shifting rod extends from the shifting block, a square hole is formed in the shifting block, a square block is inserted in the square hole, a cover plate is arranged on one side of the square hole, an elastic element is arranged between the cover plate and the square block, a convex block which can be inserted in the square through hole extends from one end of the square block, one side of the convex block is a straight surface, and the other side of the convex block is an inclined surface;

and one end of the transmission piece is connected with the lock tongue, the other end of the transmission piece is provided with a groove for accommodating the shifting lever, and the shifting lever shifts the groove to enable the transmission piece to move left and right so as to realize the extension and retraction of the lock tongue.

According to some embodiments of the utility model, square through hole is 4, evenly distributed on the thumb wheel.

According to some embodiments of the invention, the resilient element is a spring.

According to some embodiments of the invention, the projection is a cylinder.

According to some embodiments of the utility model, be provided with the location boss on the thumb wheel.

According to some embodiments of the present invention, the front end of the shift lever is a cylinder.

According to the utility model discloses locking mechanical system for indoor lock has following beneficial effect at least: the door body rotates the thumb wheel through the twisting hand under the state of opening, because one side of lug is the inclined plane, square through hole on the thumb wheel only can promote the lug upwards to compress elastic element to can't drive the thumb piece and rotate together, make the unable closure of the door body, thereby prevent that child from in indoor maloperation just can lock the door body through rotating the twisting hand, avoid unexpected emergence.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a schematic view of an installation structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of the dial assembly and the dial wheel;

fig. 3 is an exploded view of the dial assembly and the dial wheel at another angle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper and lower directions, is the orientation or positional relationship shown on the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a locking mechanism for an indoor door lock includes a housing 1, and the housing 1 has mounted therein: thumb wheel 2, shifting block subassembly and driving plate.

The equipartition has a plurality of square through hole 21 on the thumb wheel 2, square through hole 21 generally is 4, thumb wheel 2 middle part is provided with projection 22, projection 22 is the cylinder, for convenient thumb wheel 2 location installation in casing 1, be provided with location boss 23 on the thumb wheel 2, in addition, thumb wheel 2 is connected with the wrench, through the rotation to the wrench to drive thumb wheel 2 and rotate.

Referring to fig. 2 and 3, the dial block assembly includes a dial block 4 inserted in the convex column 22 and capable of rotating freely, a dial rod 41 extends from the dial block 4, a square hole 42 is formed in the dial block 4, a square block 5 is inserted in the square hole 42, a cover plate 43 is arranged on one side of the square hole 42, an elastic element 6 is arranged between the cover plate 43 and the square block 5, the elastic element 6 is a spring, and other structures such as a spring plate can be adopted as required, one end of the square block 5 extends to form a convex block 51 which can be inserted in the square through hole 21, one side of the convex block 51 is a straight surface 511, and the other side is an inclined surface 512; in addition, the shifting block component is connected with the lock cylinder, and the shifting block 4 is driven to rotate through rotation of the lock cylinder.

The driving piece 7, one end of the driving piece 7 is connected with the bolt 8, the other end of the driving piece 7 is provided with a groove 71 for accommodating the shift lever 41, in order to enable the shift lever 41 to be smoother during shifting, the front end of the shift lever 41 is a cylinder, and the shift lever 41 enables the driving piece 7 to move left and right by shifting the groove 71, so that the bolt 8 extends out and retracts.

The working principle of the product is as follows: when the bolt 8 needs to extend out of the locking door body, the shifting block assembly can be rotated by the lock cylinder, at the moment, the shifting block 4 drives the shifting wheel 2 to rotate together through the square block 5, and the shifting block 4 shifts the groove 71 on the driving piece 7 through the shifting rod 41 when rotating, so that the driving piece 7 moves leftwards, and the bolt 8 extends out;

when the lock is to be unlocked, the shifting block assembly is rotated back by the lock cylinder, the shifting block 4 shifts the groove 71 on the driving sheet 7 through the shifting rod 41, so that the driving sheet 7 moves rightwards, and the retraction of the bolt 8 is realized. When the lock is to be unlocked, the dial wheel 2 can be rotated by a wrench, the dial wheel 2 drives the dial block 4 to rotate together through the square block 5, and the dial block 4 dials the groove 71 on the transmission piece 7 through the dial rod 41 when rotating, so that the transmission piece 7 moves leftwards to retract the lock tongue 8.

However, if the thumb wheel 2 is turned by a handle when the door body is opened, because one side of the convex block 51 is the inclined plane 512, the square through hole 21 on the thumb wheel 2 can only push the convex block 51 to compress the elastic element 6 upwards, so that the thumb block 4 cannot be driven to rotate together, the lock tongue 8 cannot extend out to lock the door body, children can be prevented from locking the door body by turning the handle by misoperation indoors, and accidents are avoided.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a locking mechanical system for indoor lock which characterized in that: including casing (1), install in casing (1):

the poking wheel (2) is connected with a wrench, a plurality of square through holes (21) are uniformly distributed on the poking wheel (2), and a convex column (22) is arranged in the middle of the poking wheel (2);

the shifting block assembly is connected with the lock cylinder and comprises a shifting block (4) which is inserted on the convex column (22) and can freely rotate, a shifting rod (41) extends from the shifting block (4), a square hole (42) is formed in the shifting block (4), a square block (5) is inserted in the square hole (42), a cover plate (43) is arranged on one side of the square hole (42), an elastic element (6) is installed between the cover plate (43) and the square block (5), a convex block (51) which can be inserted in the square through hole (21) extends from one end of the square block (5), a straight surface (511) is arranged on one side of the convex block (51), and an inclined surface (512) is arranged on the other side of the convex block (51);

the driving piece (7), one end of the driving piece (7) is connected with the bolt (8), the other end of the driving piece is provided with a groove (71) for accommodating the shifting lever (41), and the shifting lever (41) shifts the groove (71) to enable the driving piece (7) to move left and right so as to achieve extending and retracting of the bolt (8).

2. The locking mechanism for an indoor door lock according to claim 1, characterized in that: the number of the square through holes (21) is 4, and the square through holes are uniformly distributed on the thumb wheel (2).

3. The locking mechanism for an indoor door lock according to claim 1, characterized in that: the elastic element (6) is a spring.

4. The locking mechanism for an indoor door lock according to claim 1, characterized in that: the convex column (22) is a cylinder.

5. The locking mechanism for an indoor door lock according to claim 1, characterized in that: and a positioning boss (23) is arranged on the thumb wheel (2).

6. The locking mechanism for an indoor door lock according to claim 1, characterized in that: the front end of the shifting lever (41) is a cylinder.