CN115075659A - Safety door bolt with self-locking and safety function - Google Patents

Abstract

The invention relates to the field of door locks, in particular to a safety door latch with self-locking and safety functions, wherein a sliding groove is formed in one side, close to a cover body, of a base, a door latch capable of axially sliding along a groove body is arranged in the sliding groove, and a second spring is arranged between one side, close to the center of a door panel, of a locking block and the inner wall of the sliding groove; a first pin hole is vertically formed in the middle of the top of the sliding groove, a second pin hole coaxial with the first pin shaft is formed in the cover body, a pin rod is arranged in the first pin hole, a semicircular clamping groove is formed in the side, close to the cover body, of the pin rod, and a first spring is sleeved outside the rod body at the end, penetrating through the second pin hole, of the pin rod; the first circular groove and the second circular groove which are matched with the pin rod are arranged on one side, close to the first pin shaft, of the latch, so that the door can be quickly reversely locked, the latch device can only be opened from the inside, and cannot be opened from the outside, and the latch is very safe and reliable; the door bolt device has the advantages of simple structure, convenience in installation and use, high safety, easiness in processing and production and good market prospect.

Description

Safety door bolt with self-locking and safety function

Technical Field

The invention relates to the field of door locks, in particular to a safety door latch with self-locking and safety functions.

Background

When a person stays in a hotel, the person working in the hotel is not required to open the door by taking a key at any time in order to have a better rest and a certain sense of safety, so that the bolt inserted from the bar door in a room is designed.

Some gates or room doors, in order to prevent people from opening the door from the outside by using tools such as thin objects, the door is designed to be inserted with the bolt and then the door cannot be opened from the outside, and after the safety function is used, people who are not clear of the structure cannot open the door from the inside of the door, so that the effect of preventing children from opening the door by mistake can be achieved.

In an emergency situation, considering that some people, especially single women, insert the door lock after entering the door first, the door lock is designed to be automatically inserted by pressing the button after entering the door.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a safety door latch with self-locking and safety functions.

In order to solve the technical problems, the technical scheme provided by the invention is a safety latch with self-locking and safety functions, which comprises a base and a cover body, wherein a sliding groove is formed in one side of the base, which is close to the cover body, a latch capable of axially sliding along the groove body is arranged in the sliding groove, and a second spring is arranged between one side of a locking block, which is close to the center of a door panel, and the inner wall of the sliding groove;

a first pin hole is vertically formed in the middle of the top of the sliding groove, a second pin hole coaxial with the first pin shaft is formed in the cover body, a pin rod is arranged in the first pin hole, a semicircular clamping groove is formed in the side, close to the cover body, of the pin rod, and a first spring is sleeved outside the rod body at the end, penetrating through the second pin hole, of the pin rod;

the bolt is close to first round pin axle one side and is equipped with first circular slot and the second circular slot that uses with the pin rod cooperation, the bolt is close to lid one side and is equipped with the handle, the handle other end stretches out from lid bar inslot.

As an improvement, the base and the cover body are fixedly connected through screws.

As an improvement, the pin rod is arranged at one end of the first spring and is provided with a blocking piece.

Compared with the prior art, the invention has the advantages that:

1. the door lock is mainly applied to room doors, gates, toilet doors, cabin doors and the like, and can realize remote control and automatic door lock opening and closing functions if being matched with other electrical control devices;

2. simple structure, reliable and firm action, convenient manufacture and good anti-theft performance.

Drawings

FIG. 1 is a schematic view of the exterior of a door latch;

FIG. 2 is a schematic view of the internal structure of the door bolt;

FIG. 3 is a schematic view of a door bolt squib configuration;

FIG. 4 is a front view of the bolt;

FIG. 5 is a cross-sectional schematic view of the bolt A-A;

fig. 6 is a structural view showing a state in which the door bolt is mounted.

FIGS. 1-6 show: 1. the base, 101, spout, 102, first pinhole, 2, lid, 201, bar groove, 202, second pinhole, 3, bolt, 301, first circular slot, 302, second circular slot, 303, handle, 4, pin pole, 401, draw-in groove, 402, separation blade, 5, first spring, 6, second spring, 7, screw, 8, door plant, 9, door frame.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, wherein the description is made in detail with reference to the accompanying drawings.

With reference to fig. 1-6, a safety door latch with self-locking and safety functions comprises a base 1 and a cover body 2, wherein a sliding groove 101 is formed in one side of the base 1 close to the cover body 1, a door latch 3 capable of axially sliding along a groove body is arranged in the sliding groove 1, and a second spring 6 is arranged between one side of a locking block 3 close to the center of a door panel 8 and the inner wall of the sliding groove 101;

a first pin hole 102 is vertically formed in the middle of the top of the sliding groove 101, a second pin hole 202 coaxial with the first pin shaft 102 is formed in the cover body 2, a pin rod 4 is arranged in the first pin hole 102, a semicircular clamping groove 401 is formed in the rod body on one side, close to the cover body 2, of the pin rod 4, and a first spring 5 is sleeved outside the rod body at one end, penetrating through the second pin hole 202, of the pin rod 4;

a first circular groove 301 and a second circular groove 302 which are matched with the pin rod 4 are formed in one side, close to the first pin shaft 102, of the bolt 3, a handle 303 is arranged on one side, close to the cover body 2, of the bolt 3, and the other end of the handle 303 extends out of the strip-shaped groove 201 of the cover body 2.

As a preferred embodiment of the present embodiment, the base 1 and the cover 2 are fixedly connected by screws 7.

As a preferred embodiment of the present embodiment, the pin rod 4 is disposed at one end of the first spring 5 and is provided with a stop piece 402.

During specific implementation, when the door is opened, one hand presses the blocking piece 402, the pin rod 4 moves towards one side of the door plate, the plate body of the bolt 3 is positioned in the notch of the clamping groove 401, meanwhile, the other hand pushes the handle 303 to move towards one side of the second spring 6, the pin rod 4 is loosened when the first circular groove 301 is overlapped with the clamping groove 401, the bolt 3 is retracted into the sliding groove 101 and fixed, the pin rod is rotated by 180 degrees by hand, the clamping groove 401 is turned to be far away from one side of the sliding groove, the bolt is in a locking state at the moment, and the bolt 3 cannot be ejected by pressing the blocking piece 402; when closing the door, rotate pin rod 180 with the hand, draw-in groove 401 turns to and is close to spout one side, press separation blade 402, and bolt 3 moves to draw-in groove 401 and second circular slot 302 coincidence position to door frame 9 one side under the effect of second spring 6, loosens separation blade 402, and pin rod 4 pops out outwards, and the second circular slot 302 is blocked to the 4 body of rod of pin rod, rotates pin rod 180 with the hand, and draw-in groove 401 turns to and keeps away from spout one side, and the keeper is in the lock dead state this moment.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. The utility model provides a safety door bolt with auto-lock and protect function which characterized in that: the door lock comprises a base (1) and a cover body (2), wherein a sliding groove (101) is formed in one side, close to the cover body (1), of the base (1), a bolt (3) capable of axially sliding along a groove body is arranged inside the sliding groove (1), and a second spring (6) is arranged between one side, close to the center of a door plate (8), of a locking block and the inner wall of the sliding groove (101);

a first pin hole (102) is vertically formed in the middle of the top of the sliding groove (101), a second pin hole (202) coaxial with the first pin shaft (102) is formed in the cover body (2), a pin rod (4) is arranged in the first pin hole (102), a semicircular clamping groove (401) is formed in the rod body on one side, close to the cover body (2), of the pin rod (4), and a first spring (5) is sleeved outside the rod body at one end, penetrating through the second pin hole (202), of the pin rod (4);

bolt (3) are close to first round pin axle (102) one side and are equipped with first circular slot (301) and second circular slot (302) that use with pin pole (4) cooperation, bolt (3) are close to lid (2) one side and are equipped with handle (303), stretch out in handle (303) other end from lid (2) bar groove (201).

2. A safety door latch with self-locking and safety features according to claim 1, wherein: the base (1) and the cover body (2) are fixedly connected through a screw (7).

3. The safety door latch with self-locking and safety features as claimed in claim 1, wherein: the pin rod (4) is arranged at one end of the first spring (5) and is provided with a baffle plate (402).

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