CN208168612U - A kind of air-cylinder type door check - Google Patents

Abstract

The purpose of this utility model can be achieved through the following technical solutions: a cylinder-type automatic door closer, which includes a mounting seat, a movable rod, a slideway, a wheel bracket, a nylon wheel, a spring plug, a spring, a cylinder, a piston, and a piston rod , rotating shaft cylindrical pin, ledger screw, ring hook, it is characterized in that, the mounting base is fixed on the wall with nails, the mounting base is folded and connected with one end of the movable rod, the mounting base is provided with an annular slot, and the movable The rod is provided with a slideway and a wheel bracket, and a nylon wheel is fixed with a book screw in the wheel bracket, and the nylon wheel can rotate along the book screw, and the ring-shaped hanging hole and the slideway are fixed with a spring plug through the book screw, so The spring plug is provided with an annular hanging hole, the spring plug is connected with a spring and a cylinder, the cylinder is provided with a piston, and a piston rod and a sealing ring are arranged on the piston, and the piston rod and the spring plug pass through threaded connection.

Description

A cylinder type automatic door closer

technical field

The utility model belongs to the technical field of door closers, in particular to a cylinder type automatic door closer.

Background technique

Doors are one of the essential components of buildings and are the most commonly used in daily life. In winter, there are too many people coming in and out, and some people will forget to close the door, causing inconvenience to others. In addition, the door is easily blown open by the wind, which brings inconvenience to people's work and life. Traditionally rely on the human power of the user to push and pull, and then in order to further facilitate the use, sliding doors that can be automatically closed have appeared on the market, but there are still defects in the automatic sliding doors in the prior art, such as excessive acceleration during the automatic closing process. Slam shut, causing door damage and loud bang. Therefore, the demand for the use of cylinder buffer type automatic door closers arises.

Contents of the invention

The purpose of this utility model is to provide a cylinder type automatic door closer for the existing above-mentioned problems.

The purpose of this utility model can be achieved through the following technical solutions: a cylinder type automatic door closer, which includes a mounting seat, a movable rod, a slideway, a wheel bracket, a nylon wheel, a spring plug, a spring, a cylinder, a piston, and a piston rod , rotating shaft cylindrical pin, ledger screw, ring hook, characterized in that, the mounting seat is fixed on the wall with nails, the mounting seat is provided with a U-shaped snap ring, and the mounting seat is folded and connected with one end of the movable rod, The movable rod is provided with a slideway and a wheel bracket, and a nylon wheel is fixed in the wheel bracket with a ledger screw, and the nylon wheel can rotate along the ledger screw, and the ring hook and the slideway are fixed with a spring plug through the ledger screw , the spring plug is provided with a ring hook, the spring plug is connected with a spring and a cylinder, a piston is arranged in the cylinder, a piston rod and a sealing ring are arranged on the piston, and the piston rod and the spring plug Connected by thread.

In the above-mentioned cylinder type automatic door closer, the mounting seat and one end of the movable rod are connected by a cylindrical pin of a rotating shaft.

In the aforementioned cylinder type automatic door closer, the wheel bracket is welded to the end of the movable rod.

In the aforesaid cylinder type automatic door closer, the nylon wheel is fixed on the wheel bracket by a ledger screw.

In the above-mentioned cylinder type automatic door closer, the spring plug is provided with two upper and lower spring plugs, and the lower spring plug is provided with air holes.

In the aforementioned cylinder-type automatic door closer, the lower spring plug is connected to the U-shaped snap ring on the mounting seat through ledger screws.

In the above-mentioned cylinder type automatic door closer, the cylinder is fixed on the spring plug, the piston in the cylinder moves along the inner wall of the cylinder under the action of the piston rod, and the rubber plug is closely matched with the inner wall of the cylinder. , the upper end of the piston rod is fixed on the upper spring plug through threads, and the bottom of the cylinder is fixed on the lower spring plug.

In the above-mentioned cylinder type automatic door closer, the spring plug is provided with a spring-shaped groove, and the spring is fixed between the two spring plugs.

In the above-mentioned cylinder type automatic door closer, the movable rod is integrally welded by a rectangular material and a cylindrical material.

Compared with the prior art, the automatic door closer adopts the principle of cylinder cushioning, and when the door is forced to open, the spring stretches and the piston moves accordingly, and at this time, the air enters the air through the air inlet of the cylinder. When the door is closed, the cylinder can slow down the contraction speed of the spring, so that the door closes slowly. Finally, the device is provided with a nylon wheel, and only one end of the mounting seat needs to be fixed, and the nylon wheel can rotate along the door, thereby reducing the friction between the door and the door. The door closer has the advantages of simple structure, low cost and convenient installation, and is suitable for occasions such as families and offices.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure of the cylinder part in the utility model.

Fig. 3 is a partial sectional view of the cylinder in the utility model.

Fig. 4 is an enlarged view of the connecting part of the spring plug and the movable rod in the utility model.

Fig. 5 is an enlarged view of the connecting part of the spring plug and the mounting seat in the utility model.

In the figure, 1. Mounting seat; 2. Active rod; 3. Slideway; 4. Wheel bracket; 5. Nylon wheel; 6. Book screw; 7. Spring plug; 8. Cylinder barrel; , spring; 11, air hole; 12, piston rod; 13, ring hook; 14, piston; 15, sealing ring; 16, U-shaped snap ring.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figures 1-5, the utility model includes a mounting base 1, on which a U-shaped snap ring 16 is arranged, the movable rod 2 is connected with the mounting base 1 through a rotating shaft cylindrical pin 9, and the movable rod 2 is welded to the wheel bracket 4 Together, the nylon wheel 5 is connected with the wheel bracket 4 through the ledger screw 6 . A slideway 3 is provided above the movable rod 2, and the slideway 3 is connected with the ring hook 13 on the spring plug 7 through the ledger screw 6. The spring plug 7 has two upper and lower spring plugs, and a cylinder tube 8 and a cylinder 8 are arranged in the middle of the two spring plugs 7. The spring 10 and the cylinder 8 are provided with a piston rod 12 and a piston 14, the piston 14 is covered with a sealing ring 15, and the piston 14 and the piston rod 12 are connected by threads. The spring plug 7 below the cylinder 8 is provided with an air hole 11 , and the inner wall of the cylinder 8 is in close contact with the piston 14 .

Working principle: Mounting seat 1 is installed horizontally on the wall on the hinged side of the door, and the nylon wheel 5 leans against the door. When the door is opened by force, the nylon wheel 5 rotates along the door, and the door drives the movable rod 2 to rotate, and the movable rod 2 The rotation of the cylindrical pin 9 along the rotating shaft makes the spring 10 stretched under force, and at the same time drives the piston 14 in the cylinder 8 to move, and the air enters the cylinder 8 through the air hole 11. When the door is closed, the spring 10 shrinks, and the piston 14 passes through the cylinder 8. The friction of the cylinder 8 and the resistance of the air hinder the contraction of the spring 10, and at this time the spring 10 contracts slowly, thereby achieving the purpose of automatically closing the door.

Claims (9)

1. a kind of air-cylinder type door check, it includes mounting base, motion bar, slideway, wheel support, nylon wheel, spring plug, bullet Spring, cylinder barrel, piston, piston rod, shaft straight pin, account book screw, hanging ring hook, which is characterized in that mounting base nails On the wall, one end of the mounting base and motion bar folds connection, and the mounting base is equipped with annular slot, on the motion bar Equipped with slideway and wheel support, it is fixed with nylon wheel with account book screw in the wheel support, the nylon wheel can be along account The rotation of this screw, by account book screw fixed spring plug, the spring is equipped with hanging ring hook beyond the Great Wall for the hanging ring hook and slideway, The spring is connected with spring and cylinder barrel beyond the Great Wall, is equipped with piston in the cylinder barrel, and the piston upper has piston rod and sealing ring, The piston rod is connected through a screw thread with spring plug.

2. a kind of air-cylinder type door check according to claim 1, which is characterized in that the mounting base and motion bar One end pass through shaft cylinder pin connection.

3. a kind of air-cylinder type door check according to claim 2, which is characterized in that the wheel support is welded on The end of motion bar.

4. a kind of air-cylinder type door check according to claim 3, which is characterized in that the nylon wheel passes through account book Screw is fixed on wheel support.

5. a kind of air-cylinder type door check according to claim 4, which is characterized in that the spring plug is equipped with up and down Two, lower spring is equipped with stomata beyond the Great Wall.

6. a kind of air-cylinder type door check according to claim 5, which is characterized in that the lower spring plug and installation U-shaped card ring on seat passes through account book screw connection.

7. a kind of air-cylinder type door check according to claim 6, which is characterized in that the spring is fixed with beyond the Great Wall Cylinder barrel, the piston in cylinder barrel move along inner wall of cylinder under the action of piston rod, closely match between rubber stopper and inner wall of cylinder It closes, piston rod upper end is threadedly secured to upper spring beyond the Great Wall, and cylinder barrel bottom is fixed on lower spring beyond the Great Wall.

8. a kind of air-cylinder type door check according to claim 7, which is characterized in that the spring is provided with beyond the Great Wall Spring shaped recesses, spring are fixed among two spring plugs.

9. a kind of air-cylinder type door check according to claim 8, which is characterized in that the motion bar is by rectangle The entirety that material and cylindrical material are welded into.