CN-224200384-U - Automatic locking mechanical door lock

CN224200384UCN 224200384 UCN224200384 UCN 224200384UCN-224200384-U

Abstract

The utility model belongs to the technical field of mechanical door locks, and provides an automatic locking mechanical door lock which comprises a base, a lock tongue, a handle, a connecting plate and a first spring, wherein the base is provided with an inner side and an outer side, the lock tongue is rotatably arranged on the inner side of the base, the handle is rotatably arranged on the inner side of the base, the connecting plate is provided with an installation cavity, one end of the connecting plate is movably connected with the lock tongue to form a first connecting point, the other end of the connecting plate is movably connected with the handle to form a second connecting point, the handle can drive the lock tongue to rotate around the base through the connecting plate, one end of the first spring is connected with the base, the other end of the first spring is connected with the second connecting point, and the first spring is always in a stretching state. Through adopting above-mentioned structure, can realize that the handle switches wantonly the locking state and the open state of spring bolt, combines first spring simultaneously, under no exogenic action, can make the locking state and the open state of spring bolt keep, the simple operation, and the practicality is strong.

Inventors

MA YALEI
WANG ZHAOBIN
HU HONGXUN
SONG MINYANG
XUE SIQI

Assignees

上海凯煦传动科技有限公司

Dates

Publication Date: 20260505
Application Date: 20250523

Claims (10)

1. An automatic locking mechanical door lock, comprising: A base having an inner side and an outer side; the lock tongue is rotationally arranged on the inner side of the base; The handle is rotatably arranged on the inner side of the base; the connecting plate is provided with an installation cavity, one end of the connecting plate is movably connected with the lock tongue and is provided with a first connecting point, the other end of the connecting plate is movably connected with the handle and is provided with a second connecting point, and the handle can drive the lock tongue to rotate around the base through the connecting plate; And one end of the first spring is connected with the base, the other end of the first spring is connected with the second connecting point, and the first spring is always in a stretching state.
2. The automatic locking mechanical door lock according to claim 1, wherein when the lock tongue is in the locked state, the second connection point is close to the hinge point of the lock tongue and the base, and an included angle between the length direction of the first spring and the base is an acute angle.
3. The automatic locking mechanical door lock according to claim 1, wherein the lock tongue is provided with a first fixing pin, the connecting plate is provided with a first notch, the first notch is provided with a preset length, and the first fixing pin can move along the length direction of the first notch.
4. The automatic locking mechanical door lock of claim 3, further comprising a second spring disposed in the connected installation cavity, wherein one end of the second spring abuts against an inner wall of the installation cavity, the other end of the second spring abuts against the first fixing pin, and the second spring is always in a compressed state.
5. The automatic locking mechanical door lock of claim 1, wherein the base is provided with a first window, and one end of the handle moves to the outside of the base through the first window.
6. The automatic locking mechanical door lock of claim 1, wherein the base is provided with a first protrusion to form a first cavity, and wherein one end of the handle is positioned in the first cavity when the locking tongue is in the locked state.
7. The automatic locking mechanical door lock of claim 6, wherein the first protrusion is provided with a first through hole, the handle is provided with an arc-shaped portion, and the radius of the arc-shaped portion is the same as the distance from the first through hole to the rotation point of the handle.
8. The automatic locking mechanical door lock according to claim 7, wherein a rubber sleeve is arranged at the first through hole, a first channel is arranged on the rubber sleeve, and the handle movably penetrates through the first channel of the rubber sleeve.
9. The automatic locking mechanical door lock of claim 6, wherein the handle abuts the first boss when the locking bolt is fully opened.
10. The automatic locking mechanical door lock of claim 8, wherein the handle is provided with a grip, and the grip abuts the rubber sleeve when the locking tongue is in the locked state.

Description

Automatic locking mechanical door lock Technical Field The utility model belongs to the technical field of mechanical door locks, and particularly relates to an automatic locking mechanical door lock. Background The door lock is one of common articles in daily life and has wide application. Most mechanical door locks are usually complex in internal design and have an automatic locking function to prevent easy opening in order to protect the internal security, and are automatically locked after closing. However, in some special application scenarios such as a railway maintenance vehicle cab and an equipment operation room, the door needs to be frequently opened and closed, the traditional mechanical lock is very complicated to use, the door is easy to damage, and the door needs to be repeatedly opened, so that the working efficiency is affected. Disclosure of utility model The utility model provides an automatic locking mechanical door lock, which mainly solves the problems that when a vehicle cab or a device operation room is maintained, a door needs to be frequently and repeatedly opened and closed, the structure of the traditional mechanical door lock is very complicated and is easy to damage, and the maintenance efficiency is improved. In order to achieve the above purpose, the utility model adopts the following technical scheme: an automatic locking mechanical door lock comprising: A base having an inner side and an outer side; the lock tongue is rotationally arranged on the inner side of the base; The handle is rotatably arranged on the inner side of the base; the connecting plate is provided with an installation cavity, one end of the connecting plate is movably connected with the lock tongue and is provided with a first connecting point, the other end of the connecting plate is movably connected with the handle and is provided with a second connecting point, and the handle can drive the lock tongue to rotate around the base through the connecting plate; And one end of the first spring is connected with the base, the other end of the first spring is connected with the second connecting point, and the first spring is always in a stretching state. In some embodiments, when the lock tongue is in the locked state, the second connection point is close to the hinge point of the lock tongue and the base, and an included angle between the length direction of the first spring and the base is an acute angle. In some embodiments, the lock tongue is provided with a first fixing pin, the connecting plate is provided with a first notch, the first notch is provided with a preset length, and the first fixing pin can move along the length direction of the first notch. In some embodiments, the device further comprises a second spring, wherein the second spring is arranged in the connected installation cavity, one end of the second spring is abutted to the inner wall of the installation cavity, the other end of the second spring is abutted to the first fixing pin, and the second spring is always in a compressed state. In some embodiments, a first window is provided on the base, and one end of the handle moves to the outer side of the base through the first window. In some embodiments, the base is provided with a first protruding portion to form a first cavity, and when the lock tongue is in the locked state, one end of the handle is located in the first cavity. In some embodiments, the first protrusion is provided with a first through hole, and the handle is provided with an arc-shaped part, and the radius of the arc-shaped part is the same as the distance between the first through hole and the handle rotation point. In some embodiments, a rubber sleeve is arranged at the first through hole, a first channel is arranged on the rubber sleeve, and the handle movably penetrates through the first channel of the rubber sleeve. In some embodiments, the handle abuts the first boss when the locking tongue is fully open. In some embodiments, a grip is provided on the handle, and the grip abuts the rubber sleeve when the tongue is in the locked state. Compared with the prior art, the utility model has the beneficial effects that: According to the application, the handle and the lock tongue are connected through the connecting plate, the lock tongue can be driven to rotate through the rotation of the handle, so that the lock tongue is opened and closed, the position of the handle relative to the base is fixed through the tension provided by the spring through the first spring, and therefore, the lock tongue can reach a normally open state or a normally closed state under the action of no external force, the structure is stable and simple, the operation is convenient, the door can be conveniently changed between the two states of opening or closing at any time, and an operator can select the lock tongue according to the requirements of various states. Additional aspects and advantages of the application will be set forth in part in