JPH07259426A - Door closer - Google Patents

Abstract

PURPOSE:To prevent a flow control valve from coming off by the excessive turn in the direction reverse to the inserting direction and also prevent the oil filled in a door closer main body from being leaked through a passing port to the outside. CONSTITUTION:In a door closer main body 1 in which a piston 5 which is provided with a tooth part 4 meshed with a tooth part 2 around a rotating shaft 3 in longitudinal direction and movable reciprocatedly, a spring 6 which excites a door in closing direction through the piston 5, and filled oil are incorporated, a passing port 7 is formed in the piston 5, and a ball valve 8 is installed inside the passing port 7. Also another passing port 9 for oil pushed by the piston 5 when the piston 5 is moved reciprocatedly in opening and closing the door is formed in the door closer main body 1. Then a flow control valve 10 is inserted into the passing port 9 by screwing, and a pin 20 to prevent the coming-off of the flow control valve 10 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door provided at a doorway formed in a building and rotatable about a vertical axis.
The present invention relates to a door trouser for urging an open state in a closing direction.

[0002]

2. Description of the Related Art Generally, a door roser has a rotating shaft having teeth formed on its outer circumference, a piston having a tooth portion meshing with the teeth of the rotating shaft in the longitudinal direction, and a piston capable of reciprocating, and one of the pistons. Direction, specifically, a built-in spring or the like for urging the door in the closing direction, and a door roser body attached to the upper end of the door, and an upper end of the doorway and the rotating shaft protruding to the upper end of the door roser body. It consists of a two-fold ring that connects the two, and the piston reciprocates according to the rotation of the rotary shaft when the door is opened and closed, so that the oil filled in the interior of the door roser body responds to the movement of the piston. It is configured to flow between a space partitioned by a piston.

In such a door roser, a large amount of oil flows when the door is opened, and the oil passage is enlarged so that the resistance applied to the piston by the oil becomes small, and when the door is closed, the oil flows. The oil passage is made smaller so that the amount is reduced and the resistance applied to the piston is increased. Specifically, the piston is provided with a passage that opens when the door is opened and that is closed by a ball valve when the door is closed, and a flow control valve that allows oil to flow both when the door is opened and when the door is closed. A doorway is provided on the main body of the door roser. Therefore, when the door is opened, the oil flows through the former passage and the latter passage with the flow rate adjusting valve, and when the door is closed, the oil flows only through the latter passage with the flow regulating valve. The braking force works when the door is closed.

[0004]

In the conventional DOARK ROSER having the above-mentioned structure, the flow rate adjusting valve is provided by being screwed into the through hole formed in the DOARK ROSER main body, and when adjusting the flow rate adjusting valve, If it is rotated too far in the direction opposite to the direction in which the flow rate adjustment valve is inserted, the flow rate adjustment valve will slip out of the passage, and the oil that has been filled in the interior of the doker rotor will leak from the passage to the outside of the douser rotor body. There was a problem.

The present invention solves such a problem by preventing the flow regulating valve from being rotated too far in the direction opposite to the inserting direction, and the oil filled in the interior of the main body of the dozer rotor is discharged from the through hole. The purpose is to prevent leakage to the outside of the door roser body.

[0006]

In order to solve this problem, the present invention comprises a rotating shaft having teeth formed on its outer periphery and a tooth which meshes with the teeth of the rotating shaft in the lengthwise direction to reciprocate. It has a possible piston, a spring for urging the door through the piston in the direction to close the door, and a built-in filling oil. The rotary shaft and the upper end of the inlet / outlet are connected to each other by a two-folded ring. A through-hole is formed in the piston, and a ball valve is provided inside the through-hole to open the door. Occasionally, the ball valve is pushed by the hydraulic pressure associated with the movement of the piston in one direction to open the passage, and the ball valve is pushed by the hydraulic pressure associated with the movement of the piston in the opposite direction when the door is closed. The through hole is configured to be closed, and another door for oil that is pushed by the piston when the piston reciprocates when the door is opened and closed is formed in the main body of the door roser. Is provided by being inserted by screwing, and the head portion of the flow rate adjusting valve located at the insertion port of the another communication port is formed to have a diameter smaller than the inner diameter of the insertion port of the other communication port. The gist is that a pin for preventing the flow control valve from coming off is provided between the head part and the insertion port.

[0007]

With this configuration, since the pin for preventing the flow control valve from coming off is provided between the head of the flow control valve and the insertion port of another passage, the user mistakenly operates the flow control valve. Even if the pin is rotated in the direction opposite to the inserting direction, the pin hits a portion adjacent to the head to prevent the flow control valve from coming off from the other passage, thereby filling the interior of the douser rotor body. The oil that is stored does not leak out of the main body of the door roser through the separate passage.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a door rosor main body attached to an upper end of a door, a rotary shaft 3 having a tooth portion 2 formed on an outer periphery inside the door rosor main body 1, and a tooth portion of the rotary shaft 3. Tooth 4 that meshes with 2
And a spring 6 for urging the piston 5 in one direction, specifically, in the direction of closing the door.

More specifically, the piston 5 is internally provided with a recess 5a having an opening at one end, and one end of the spring 6 is fitted in the recess 5a. The other end of the spring 6 is in contact with the inner surface of one side of the door roser body 1. Oil (not shown) is filled in the interior of the door roser body 1, and when the piston 5 reciprocates according to the rotation of the rotary shaft 3 by opening and closing the door, the piston 5 moves in response to the movement of the piston 5. The oil is configured to flow between the spaces partitioned by 5. Reference numeral 7 denotes a through hole formed at the other end of the piston 5, and a ball valve 8 is provided inside the through hole 7, and the ball valve is operated by the hydraulic pressure associated with the movement of the piston 5 in one direction when the door is opened. 8 is pushed to open the passage 7, and when the door is closed, the ball valve 8 is pushed by the hydraulic pressure caused by the movement of the piston 5 in the opposite direction to close the passage 7. Reference numeral 9 denotes a through hole formed on the other end side of the douser rotor body 1 so that oil flows between the space inside the douser rotor body 1 partitioned by the piston 5 when the piston 5 reciprocates. When the flow rate adjusting valve 10 is inserted, communication with the outside of the door arc main body 1 is blocked. The communication port 9 is configured to communicate with a communication port 11 formed in a partition wall with the storage portion of the piston 5.
The inner end of the through hole 9 communicates with the storage portion of the piston 5 through the storage portion of the rotary shaft 3 through the hole 12 at one end of the piston 5.

The flow rate adjusting valve 10 has a head portion 13 located at the insertion port 9a of the through hole 9 and a head portion 2 adjacent to the head portion 13.
The O-ring mounting groove 15 is formed between the flange portions 14 of the sheet, and is formed adjacent to the flange portion 14 forming the O-ring mounting groove 15 and is formed inside the insertion port 9a of the through hole 9. And a shaft portion 18 formed so that a space portion 17 exists between the male screw portion 16 that is screwed into the female screw portion 9b and the inner surface of the through hole 9 that is adjacent to the male screw portion 16, and this shaft portion 18 And an inclined V-cut portion 19 formed at the tip of the head 13, the head portion 13 is formed to have a diameter smaller than the inner diameter of the insertion opening 9a of the through hole 9, and the head portion 13 and the insertion opening 9a are formed. A pin 20 for preventing the flow control valve 10 from coming off is provided between the other end of the door arc main body 1 from the outside. In addition,
A groove 21 is formed in the head 13 so that the tip of a driver or a coin is engaged. Reference numeral 22 is an O-ring mounted in the O-ring mounting groove 15.

By the way, the inner diameter of the inner end portion 9c of the through hole 9 is a shaft portion 18 having a V-cut portion 19 inclined at the tip.
Has a smaller diameter than the other parts so that it has the same outer diameter as that of the shaft part 18, and the tip of the shaft part 18 is fitted into this part.
The longer the fitting length of the tip of 18 is, the smaller the amount of communication between the inner end portion 9c and the space portion 17 adjacent to the inner end portion 9c via the V cut portion 19 is configured. Has been done.

The main body 1 of the door closer constructed as described above is attached to the upper end of the door, and the rotary shaft 3 projecting from the upper end of the door rotor main body 1 and the upper end of the doorway are connected by a two-fold ring. It works by That is, when the door is opened and closed, the piston 5 reciprocates in accordance with the rotation of the rotary shaft 3 so that the oil filled in the interior of the door roser main body 1 is partitioned by the piston 5 according to the movement of the piston 5. It flows between the open space and the space. Specifically, when the door is opened, the piston 5 moves in the direction of arrow A in FIG. 1 against the force of the spring 6, and the oil on the moving side of the piston 5 pushes the ball valve 8 to pass. With the mouth 7 opened, the piston 5 flows to the opposite side to the moving side, and at the same time, enters the through hole 9 from the hole 12 at one end of the piston 5 through the storage portion of the rotary shaft 3. , Through the V cut portion 19 to the side opposite to the side where the piston 5 moves from the communication port 11. Therefore, when the door is opened, oil flows through the passage 7 and the V cut portion 19. Conversely, when the door is closed, the piston 5 moves in the direction of the arrow B in FIG. 1 by the force of the spring 6, and the oil on the moving side of the piston 5 tries to escape somewhere. At this time, the ball valve 8 is pushed by the oil to close the passage 7, so that the oil flows only through the V cut portion 19. Therefore, when the door is closed, the area of the oil passage is smaller than when the door is opened, and the braking force acts on the door.

By the way, in the present embodiment, the inner end portion 9c through the V cut portion 19 and the space portion adjacent to the inner end portion 9c by the forward and reverse rotations of the flow rate adjusting valve 10.
Although the amount of communication with 17 is finely adjusted, even if the user mistakenly tries to rotate the flow rate adjusting valve 10 in a direction opposite to the direction in which the flow rate adjusting valve 10 is inserted, the flow rate between the head 13 and the insertion port 9a is Since the pin 20 for preventing the flow rate adjusting valve 10 from coming off is provided on the inside, the flange portion 14 hits the pin 20 to prevent the flow rate adjusting valve 10 from coming off from the through-hole 9, and There is no problem that the oil filled in the tank leaks to the outside of the door ark main body 1 from the through hole 9.

[0014]

As described above, according to the present invention, since the pin for preventing the flow control valve from coming off is provided between the head of the flow control valve and the insertion port of the through hole, the user can Even if you accidentally try to rotate it in the direction opposite to the direction in which the flow control valve is inserted,
The pin is prevented from coming off from the passage by coming into contact with the portion adjacent to the head, and thus the oil filled in the interior of the douser rotor body is prevented from leaking to the outside of the douser rotor body from the outlet. Absent.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a door arc main body according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the relevant part.

FIG. 3 is an enlarged front view of the relevant part.

[Explanation of symbols]

 1 DOA ROSER Main Body 2 Teeth 3 Rotating Shaft 4 Teeth 5 Piston 6 Spring 7 Through Port 8 Ball Valve 9 Through Port 9a Insert Port 9b Female Thread 9c Inner End 10 Flow Control Valve 11 Communication Port 12 Hole 13 Head 14 Collar 16 Male thread 17 Space 18 Shaft 19 V cut 20 Pin 21-Groove

Claims (1)

[Claims] 1. A rotary shaft having teeth formed on the outer periphery thereof, a piston reciprocatingly provided with teeth that mesh with the teeth of the rotary shaft in the length direction, and a direction in which a door is closed via the piston. Equipped with a spring for urging the door, a filler oil built-in, and a door roser main body attached to the upper end of the door, and a fold ring between the rotary shaft projecting at the upper end of the door rotator main body and the upper end of the doorway. The piston is provided with a through hole, and a ball valve is provided inside the through hole, and the ball valve is operated by the hydraulic pressure that accompanies the movement of the piston in one direction when the door is opened. Is pushed to open the passage, and when the door is closed, the ball valve is pushed by the hydraulic pressure caused by the piston moving in the opposite direction to close the passage. The other main body is provided with another through hole for oil that is pushed by the piston when the piston reciprocates when the door is opened and closed, and a flow rate adjusting valve is provided by being screwed into the other through hole, and The head portion of the flow rate adjusting valve located at the insertion port of the through hole is formed with a diameter smaller than the inner diameter of the insertion port of the other through hole, and the flow rate is adjusted between the head portion of the flow rate adjusting valve and the insertion port. A door roser equipped with a pin to prevent the valve from coming off.