CN215671573U

CN215671573U - Device for reducing locking resistance of door leaf of civil air defense door

Info

Publication number: CN215671573U
Application number: CN202122236950.2U
Authority: CN
Inventors: 庄丰烈; 肖红军
Original assignee: Shenzhen Lingnan Civil Air Defense Protection Equipment Co ltd
Current assignee: Shenzhen Lingnan Civil Air Defense Protection Equipment Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-28
Anticipated expiration: 2031-09-16

Abstract

The utility model relates to the technical field of civil air defense door accessories and discloses a device for reducing locking resistance of a door leaf of a civil air defense door, which comprises the door leaf and a door frame, wherein a lock seat is arranged at the center of the inner wall of the door leaf, a lock head which can move in a telescopic manner is arranged in the lock seat, an inclined plane is arranged at the front end part of the lock head, a roller is arranged in the lock head, the roller protrudes out of the inclined plane, a screw rod penetrates through the inclined plane, the lock head can be easily stretched into the lock groove through rolling friction motion of the roller protruding out of the inclined plane and the lock groove, the locking force of the door leaf is increased under the condition of the same operating force, or the operating force is reduced under the condition of the same locking force, particularly for locking of a large-scale heavy-load civil air defense door, the locking resistance generated by closing the civil air defense door is greatly reduced.

Description

Device for reducing locking resistance of door leaf of civil air defense door

Technical Field

The utility model relates to the technical field of civil air defense door accessories, in particular to a device for reducing locking resistance of a door leaf of a civil air defense door.

Background

The civil air defense door is widely applied to civil buildings and public places and provides refuge places in wartime, the civil air defense door comprises a pre-embedded door frame, a door leaf arranged on the door frame, a locking mechanism arranged on the door leaf and locking force of the civil air defense door, which are important indexes for ensuring the sealing of the civil air defense door. The sliding friction between the inclined surface of the lock head and one side of the lock groove of the door frame generates larger resistance, so that the operating resistance of the locking mechanism is increased, and the locking of the door leaf and the door frame is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for reducing the locking resistance of a door leaf of a civil air defense door, which solves the problem that the sliding friction between the inclined surface of a lock head and one side of a lock groove of a door frame in the background art generates larger resistance, so that the operation resistance of a locking mechanism is increased, and the locking of the door leaf and the door frame is not facilitated.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a reduce device of people's air defense door leaf locking resistance, includes door leaf and door frame, and the lock seat is installed at door leaf inner wall center, is provided with concertina movement's tapered end in the lock seat, and tapered end front end position is provided with the inclined plane, and tapered end internally mounted has the gyro wheel, and gyro wheel protrusion in inclined plane, the inside screw rod that runs through in inclined plane is provided with, and the locked groove has been seted up to the door frame outer wall, tapered end and locked groove adaptation connection.

In a preferred embodiment of the present invention, the lock groove surface wall of the outer wall of the door frame is provided with a sliding groove, and the roller moves into the lock groove through the sliding groove provided in the lock groove surface wall.

In a preferred embodiment of the present invention, the roller is fixedly mounted on the inner ring of the roller.

As a preferred embodiment of the utility model, the screw is adapted to be movably connected to the roller.

As a preferred embodiment of the present invention, the lock slot is formed at a position corresponding to the lock head.

In a preferred embodiment of the present invention, the part of the roller protruding from the inclined surface makes rolling friction motion with the lock groove.

Compared with the prior art, the utility model has the following beneficial effects:

compared with the prior art, the device for reducing the locking resistance of the door leaf of the civil air defense door has the advantages that the lock head can be easily stretched into the lock groove through the rolling friction motion of the roller protruding out of the inclined plane and the lock groove, the door leaf locking force is increased under the condition of the same operating force, or the operating force is reduced under the condition of the same locking force, and particularly for the locking of a large heavy-load civil air defense door, the locking resistance generated by the closing of the civil air defense door is greatly reduced.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a front view of a device for reducing the locking resistance of a door leaf of a civil air defense door according to the utility model;

FIG. 2 is a schematic view of a lock slot surface of a device for reducing the locking resistance of a door leaf of a civil air defense door according to the utility model;

FIG. 3 is a schematic structural view of a lock head of the device for reducing the locking resistance of the door leaf of the civil air defense door;

fig. 4 is a schematic view of a screw structure of a device for reducing locking resistance of a door leaf of a civil air defense door.

In the figure: 1. a door leaf; 2. a door frame; 3. a lock seat; 4. a lock head; 5. a bevel; 6. a roller; 7. a keyway surface; 8. locking the groove; 9. a chute; 10. a screw; 11. and (4) rolling shafts.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a reduce device of people's air defense door leaf locking resistance, including door leaf 1 and door frame 2, door leaf inner wall central point puts and installs lock seat 3, be provided with concertina movement's tapered end 4 in the lock seat 3, tapered end 4 front end position is provided with inclined plane 5, tapered end 4 internally mounted has

gyro wheel

6, and 6 protrusion in inclined plane 5 of gyro wheel, locked groove 8 has been seted up to door frame 2 outer wall, tapered end 4 and locked groove 8 adaptation connection, during people's air defense door locking, operation locking link mechanism makes tapered end 4 stretch out, inclined plane 5 on locating tapered end 4 rolls in spout 9 that locked groove face 7 table walls were seted up through gyro wheel 6, make

gyro wheel

6 and 8 rolling friction motion in locked groove, the degree of difficulty that tapered end 4 stretched into locked groove 8 has been reduced to its production.

Referring to fig. 2-4, in a specific embodiment, a sliding groove 9 is formed in a surface wall of the lock groove surface 7, the sliding groove 9 can reduce friction force generated by rolling of the roller 6, a roller 11 is fixedly installed on an inner ring of the roller 6, a screw 10 is movably connected with the roller 11, the screw 10 can flexibly rotate through the roller 11, and the roller 6 can be detached and replaced through movement of the screw 10.

Referring to fig. 1-3, the locking groove 8 is formed at a position corresponding to the locking head 4, the locking groove 8 is formed correspondingly to the locking head 4 to ensure that the locking head is not dislocated, the part of the roller 6 protruding out of the inclined plane 5 and the locking groove 8 perform rolling friction motion, and the contact area between the inclined plane 5 and the locking groove 8 is reduced due to the protrusion of the roller 6 out of the inclined plane 5, so that the friction resistance is reduced.

It should be noted that the present invention is a device for reducing the locking resistance of a door leaf of a civil air defense door, each of which is a universal standard component or a component known to those skilled in the art, and the structure and principle of the device are known to those skilled in the art through technical manuals or through routine experiments.

The working principle is as follows: the people's air defense door locking, door leaf 1 moves to door frame 2 direction, operation locking link mechanism makes tapered end 4 in the lock seat 3 stretch out, run through roller bearing 11 fixed gyro wheel 6 through screw rod 10, make gyro wheel 6 move in tapered end 4, can dismantle the change to gyro wheel 6 through the activity of screw rod 10, the part contact locked groove face 7 of gyro wheel 6 protrusion inclined plane 5, gyro wheel 6 rolls, spout 9 through locked groove face 7 table wall seting up moves to locked groove 8, reduced the resistance that inclined plane 5 cut into door frame 2 through rolling, the rolling frictional force that its produced has reduced the degree of difficulty that tapered end 4 stretched into locked groove 8, realized the light locking of people's air defense door leaf 1 and door frame 2 under the same operating force condition.

Claims

1. The utility model provides a device of reduction people's air defense door leaf locking resistance, includes door leaf (1) and door frame (2), its characterized in that: the door is characterized in that a lock seat (3) is installed at the center of the inner wall of the door leaf (1), a lock head (4) which moves in a telescopic mode is arranged in the lock seat (3), an inclined plane (5) is arranged at the front end of the lock head (4), rollers (6) are installed inside the lock head (4), the rollers (6) are rotatably connected with the lock head (4), the rollers (6) protrude out of the inclined plane (5), a lock groove (8) is formed in the outer wall of the door frame (2), and the lock head (4) is connected with the lock groove (8) in an adaptive mode.

2. The device for reducing the locking resistance of the door leaf of the civil air defense door as claimed in claim 1, wherein: the outer wall of the door frame (2) is provided with a lock groove surface (7), a sliding groove (9) is formed in the surface wall of the lock groove surface (7), and the roller (6) moves into the lock groove (8) through the sliding groove (9) formed in the surface wall of the lock groove surface (7).

3. The device for reducing the locking resistance of the door leaf of the civil air defense door as claimed in claim 1, wherein: and a roller (11) is fixedly arranged on the inner ring of the roller (6).

4. The device for reducing the locking resistance of the door leaf of the civil air defense door as claimed in claim 3, characterized in that: a screw rod (10) is arranged in the inclined plane (5), and the screw rod (10) is matched with the rolling shaft (11) and movably connected with the rolling shaft.

5. The device for reducing the locking resistance of the door leaf of the civil air defense door as claimed in claim 1, wherein: the lock groove (8) is arranged at the position corresponding to the lock head (4).

6. The device for reducing the locking resistance of the door leaf of the civil air defense door as claimed in any one of the claims 1 to 5, characterized in that: the part of the roller (6) protruding out of the inclined plane (5) and the locking groove (8) move in a rolling friction mode.