CN211974680U

CN211974680U - Oil-free silent damping fireproof hinge

Info

Publication number: CN211974680U
Application number: CN202020236003.6U
Authority: CN
Inventors: 张会群; 余关保
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-11-20
Anticipated expiration: 2030-03-01

Abstract

The utility model provides an oilless silent damping fireproof hinge, which comprises two hinge plates hinged with each other, wherein one side of each hinge plate is provided with a plurality of shaft sleeves, and the shaft sleeves of the two hinge plates are penetrated and arranged in the shaft sleeves through a rotating shaft for connection; a bearing is arranged between the shaft sleeves of the two hinge pieces, and the bearing is sleeved on the rotating shaft; a metal sleeve is arranged between at least one shaft sleeve of the hinge plate and the rotating shaft, and a solid lubricating coating is coated on the inner side wall of the metal sleeve. The metal sleeve is nested in the shaft sleeve of the hinge sheet for damping, so that the condition that a door and window using the hinge is rapidly closed to cause huge sound is avoided, and the solid lubricating coating is coated on the inner side wall of the metal sleeve, so that the friction between the metal sleeve and a rotating shaft is reduced, the normal rotation of the hinge sheet is not influenced, and no friction sound exists. In addition, the whole metal material can prevent fires, can apply to fire prevention door and window.

Description

Oil-free silent damping fireproof hinge

Technical Field

The utility model relates to a hardware fitting field especially relates to an there is not oily silence damping hinge of preventing fires.

Background

The hinge comprises two hinge plates hinged with each other and used for connecting two objects so that the two objects can rotate relatively. Hinge piece establishes usually through the axle sleeve cover and connects in the pivot, friction for reducing between axle sleeve and the pivot adds colloidal lubricating oil in the gap between axle sleeve and pivot usually, play damped effect in the lubrication, but along with long-time rotation is used, the gap between axle sleeve and the pivot increases easily, make lubricating oil leak outward, and be difficult for adding after leaking outward and lead to lubricated effect inefficacy, produce the abnormal sound between hinge activity process axle sleeve and pivot, in addition, the lubricating oil of leaking outward can influence the outward appearance of hinge.

The department hinge adopts the mode of establishing the gum cover additional between axle sleeve and pivot to carry out the damping, but the gum cover long-time use is easily ageing, and the gum cover after ageing is cracked easily under the friction of metal hinge piece, and the gum cover is the plastic material, does not prevent fires.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an there is not oily silence damping fire prevention hinge has the damping buffering, lubricated effect of making an uproar of falling.

The utility model provides an oilless silent damping fireproof hinge, which comprises two hinge plates hinged with each other, wherein one side of each hinge plate is provided with a plurality of shaft sleeves, and the shaft sleeves of the two hinge plates are penetrated and arranged in the shaft sleeves through a rotating shaft for connection; a bearing is arranged between the shaft sleeves of the two hinge pieces, and the bearing is sleeved on the rotating shaft; a metal sleeve is arranged between at least one shaft sleeve of the hinge plate and the rotating shaft, and a solid lubricating coating is coated on the inner side wall of the metal sleeve.

In one or more embodiments of the present invention, the lubricating coating is made of teflon, which can reduce the friction coefficient, provide lubrication, and resist high temperature.

In one or more embodiments of the present invention, the metal sleeve has shoulders inclined toward the lateral portions at both ends thereof.

In one or more embodiments of the present invention, the metal sleeve is covered with a fastening ring at the outside of the middle portion thereof.

In one or more embodiments of the present invention, the bearing is a ball bearing.

In one or more embodiments of the present invention, the one end of the rotating shaft is provided with a convex edge, and the hinge plate connected by the rotating shaft and the shaft sleeve at the end opposite to the convex edge are connected with an end cap for plugging the outer end of the shaft sleeve.

In one or more embodiments of the present invention, the shaft sleeves at two ends of the hinge plate connected by the rotating shaft are respectively connected to the end caps for plugging.

The utility model has the advantages that:

the utility model discloses a nested metal covering carries out the damping in the axle sleeve of hinge piece, slows down two hinge piece slew velocity, and the door and window of avoiding using this hinge appears the condition that the quick closure caused huge sound, and coats on the metal covering inside wall and have solid-state lubricant coating, reduces and the pivot within a definite time friction, does not influence the normal rotation of hinge piece, and does not have the friction sound.

In addition, damping lubrication is performed through the metal sleeve, lubricating oil does not need to be added, and the situations of leakage and lubrication failure cannot occur. And the metal sleeve can prevent fire, and is relatively matched with the plastic sleeve, so that the preparation requirements of the fireproof door and window are met. The lubricating coating in the metal sleeve is preferably a polytetrafluoroethylene coating, and the metal sleeve has low friction coefficient, can be lubricated, is high-temperature resistant and meets the fireproof requirement.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an exploded view of a first embodiment of the present invention.

Fig. 3 is a cross-sectional view of a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a metal sleeve according to a first embodiment of the present invention.

Fig. 5 is an exploded view of the second embodiment of the present invention.

Fig. 6 is a sectional view of a second embodiment of the present invention.

Detailed Description

The application scheme is further described below with reference to the accompanying drawings:

example one

Referring to the attached figures 1-4, an oil-free mute damping fireproof hinge comprises two hinge plates 1 which are hinged with each other. One side of the hinge pieces 1 is provided with a plurality of shaft sleeves 2, and the shaft sleeves 2 of the two hinge pieces 1 are connected in a penetrating way through a rotating shaft 3. Specifically, the hinge plate 1 includes a first hinge plate 11 and a second hinge plate 12, two shaft sleeves 2 are arranged on one side of the first hinge plate 11, three shaft sleeves 2 are arranged on one side of the second hinge plate 12, the shaft sleeves 2 of the first hinge plate 11 and the second hinge plate 12 are arranged at intervals in a staggered manner, that is, the two shaft sleeves 2 of the first hinge plate 11 are located in the space between the three shaft sleeves 2 of the second hinge plate 12.

And a bearing 4 is arranged between the shaft sleeves 2 at the two ends of the second hinge plate 12 and the two shaft sleeves 2 of the first hinge plate 11, and the bearing 4 is sleeved on the rotating shaft 3. The bearing 4 is a ball bearing, so that the rotating shaft 3 can smoothly rotate.

A metal sleeve 5 is arranged between the shaft sleeve 2 and the rotating shaft 3 of the hinge plate 1. The inner side wall of the metal sleeve 5 is coated with a solid lubricating coating 51, and the solid lubricating coating 51 is a high-temperature-resistant lubricating coating 51, preferably polytetrafluoroethylene, and has a low coefficient of friction and high temperature resistance. The two ends of the metal sleeve 5 are provided with shoulders 50 inclined towards the side parts, and the shoulders 50 are conical surfaces and are conveniently nested in the sleeve holes of the shaft sleeve 2. The outer side of the middle of the metal sleeve 5 is wrapped with a fastening ring 52, the fastening ring 52 is made of copper sheets, and the copper sheets are used for reinforcing to prevent the metal sleeve 5 from deforming.

One end of the rotating shaft 3 is provided with a convex edge 31, the end side part of the rotating shaft is provided with a grid convex pattern, and the shaft sleeve 2 at one end of the hinge sheet 1 connected through the rotating shaft 3, which is opposite to the convex edge 31, is connected with an end cap 6 to seal the outer end of the shaft sleeve 2. The end cap 6 is provided with a lug 61 connected with the trepan of the shaft sleeve 2, and the lug 61 is provided with a grid convex pattern.

During installation, the metal sleeve 5 is firstly nested in the shaft sleeve 2, then the shaft sleeves 2 of the first hinge piece 11 and the second hinge piece 12 are coaxially arranged, the bearing 4 is arranged between the shaft sleeves 2 at two ends, the rotating shaft 3 penetrates through the shaft sleeves 2 and the bearing 4 one by one, the convex edge 31 of the rotating shaft 3 covers the shaft sleeve 2 at one end, and finally the end cap 6 is used for plugging the shaft hole at the outer side of the shaft sleeve 2 at the other end.

When the door/window buffer is used, the connecting holes in the hinge pieces 1 are connected with the door/window and a wall body, and the door/window has a buffer effect when opened and closed through damping of the metal sleeve 5, so that severe collision caused by quick closing is avoided. And through the cooperation of bearing 4 and the lubricated coating 51 of the inboard of metal covering 5, it is light laborsaving when rotating door/window.

Example two

Referring to fig. 5 and 6, the oil-free mute damping fireproof hinge comprises two hinge plates 1 which are hinged with each other. The difference between this embodiment and the first embodiment is that the rotating shaft 3 is a round rod, and the end caps 6 are respectively connected to the shaft sleeves 2 at the two ends of the hinge plate 1 connected by the rotating shaft 3 for plugging. The end cap 6 is provided with a lug 61 connected with the trepan of the shaft sleeve 2, and the lug 61 is provided with a grid convex pattern. When the shaft sleeve is installed, the end caps 6 are used for plugging the shaft holes on the outer sides of the shaft sleeves 2 at the two ends.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.

Claims

1. An oil-free silent damping fireproof hinge comprises two hinge plates which are hinged with each other, and is characterized in that a plurality of shaft sleeves are arranged on one side of each hinge plate, and the shaft sleeves of the two hinge plates are arranged in a penetrating manner through a rotating shaft to be connected; a bearing is arranged between the shaft sleeves of the two hinge pieces, and the bearing is sleeved on the rotating shaft; a metal sleeve is arranged between at least one shaft sleeve of the hinge plate and the rotating shaft, and a solid lubricating coating is coated on the inner side wall of the metal sleeve.

2. An oil-free silent damping fireproof hinge as claimed in claim 1, wherein the lubricating coating is polytetrafluoroethylene.

3. An oil-free silent damping fireproof hinge as claimed in claim 1 or 2, wherein the two ends of the metal sleeve are provided with shoulders inclined to the side.

4. An oil-free silent damping fireproof hinge as claimed in claim 1 or 2, wherein the metal sleeve is wrapped with a fastening ring at the outside of the middle part.

5. An oil-free silent damping fireproof hinge as claimed in claim 1, wherein the bearing is a ball bearing.

6. An oil-free silent damping fireproof hinge as claimed in claim 1, wherein one end of the rotating shaft is provided with a convex edge, and the hinge plate connected by the rotating shaft is connected with an end cap through a shaft sleeve at the end opposite to the convex edge.

7. An oil-free silent damping fireproof hinge as claimed in claim 1, wherein the shaft sleeves at the two ends of the hinge plates connected by the rotating shaft are respectively connected with end caps.