KR200246966Y1 - Door closer - Google Patents

Abstract

The present invention relates to a door closer, and more particularly, to a door closer that is installed between the door and the door frame and is configured to serve as a door closure and at the same time serves as a door closer.

An object of the present invention is to solve the above problems, and to simplify the configuration of the door closure, and to facilitate the elastic adjustment of the door closer and door closure that can facilitate the closing speed adjustment and stop angle of the door In providing.

In order to realize the above object, the present invention is coupled to the first rotating member 57 and the first rotating member 57 inserted into and fixed to the first hinge 52, and is capable of axially sliding movement and the spring 63. In the door closer comprising a second rotating member 58 supported by the) and a torsion spring 59 for applying elasticity to twist the first and second rotating members 57, 58,

The transmission shaft 1 which is a polygonal shape protruding from the other end of the second rotation member 58, the transmission shaft 1 is penetrated, and the second rotation member 58 and the sawtooth engaging jaw (2) The first torsion anchor 3 intermittently engaged with the first torsion anchor 3, the torsion sleeve which is in close contact with the first torsion anchor 3 and the transmission shaft 1 penetrates and interlocks with the transmission shaft 1. A torsion base 6 into which 4) is inserted and coupled to the spline 5, a fixing member 7 screwed to the torsion base 6 and coupled to move the torsion sleeve 4; It characterized in that it comprises a pressure rod (8) is installed to press / disengage the locking step (2) by pressing the transmission shaft (1).

Description

DOOR CLOSER}

The present invention relates to a door closer, and more particularly, to a door closer that is installed between the door and the door frame and configured to serve as a door hinge and at the same time serves as a door closer and simplifies the configuration.

In general, in the company's indoors, libraries, hospitals, laboratories, etc. where quietness is required, the quietness is required when the door is opened and closed. When the above door is closed, the door is particularly loud, so the door should be closed quietly.

In order to close the door quietly, a person should put the door slightly and then close the door frame so that it does not close. The door closer is installed because it is difficult and cumbersome for a person to do this every time.

The door closer is disclosed in Korean Patent Application No. 2000-75440 filed by the applicant on December 12, 2000, which is attached to a door or a door frame as shown in FIGS. 7 and 8, respectively. In addition, the first and second cylindrical parts (50, 51) are coupled to each other, the first and second hinges (52, 53) rotatable, and the first cylindrical part 50 is inserted into the fixed and the first interlocked rotation A stopper 54, a second stopper 55 inserted into and fixed to one end of the first hinge 52, and coupled to the first stopper 54 by a toothed jaw 56. And a second rotation center member 57 intermittently connected to the first rotation center member 57 and the first rotation center member 57 so as to be axially movable, and intermittently connected to the second stopper 55. 58 is fixedly installed between the first and second center members 57 and 58 to generate a torsion when the first and second center members 57 and 58 are twisted. Key is composed of a spring (59).

In addition, in order to form the torsion by twisting the torsion spring 59 in advance, the tooth-shaped first catching portion 60 formed in the second stopper 55 and the first catching portion 60 described above. The second locking portion 61 is formed to be intermittently coupled to the locking member 62 coupled to the second rotation member 58 and interlocked with the second rotation member 58, and the elastic spring 63 is pressed against the locking member 62. A pressure rod 64 movably installed through the second center member 58 so as to be pressed or expanded, and an adjustment bolt screwed to the second center member 58 to transfer the pressing rod 64. 65).

In particular, in order to control the closing speed of the door, the second rotating center member 58 penetrates and is fixed to the second hinge 53, and the fixing nut 66 for interlocking rotation and the first A fixing plate 69 connected to a spline to interlock with the two rotation center members 58 and intermittently connected to the fixing nut 66, the pin 67, and the through hole 68, and configured to rotate / separate the second plate; A friction surface is formed to reduce the closing force while rubbing with the stopper 55, and the friction member 70 fixed to the first hinge 52 and the pin 67 are pressed to reduce the friction of the friction surface. It consists of a washer 71 and the third spring 72 installed so as to adjust the pressure nut 73.

In addition, in order to adjust the opening angle of the door, the engaging portion 74 is formed in the central portion of the outer surface of the first stopper 54 and formed into a groove to have a predetermined angle, and in contact with the engaging portion 74 The sliding member 76 having the locking jaw 75 is formed so that the door can be stopped at a predetermined angle, and the sliding member 76 passes through the sliding member 76, and a straight protrusion 77 is formed to form the sliding member 76. It consists of a shaft (79) insertable into the cross groove (78) and the adjusting member (81) which is screwed to the fixing nut (80) through which the shaft (79) is penetrated and fixed to the second hinge (53). have.

Referring to the door closer described above, the first and second locking portions 60 and 61 are engaged with the pressing rod 65 while the first and second hinges 52 and 53 are fixed to the door and the door frame, respectively. After that, the first and second hinges 52 and 53 are rotated.

When the first and second hinges 52 and 53 are rotated, the pressure rod 65 is tightened at a desired position so that the first and second catching parts 60 and 61 are spaced apart from each other. Since it is connected to the second hinge 53 through the fixing nut 66, the preliminary elasticity is applied.

That is, the elasticity of the door closer is determined by the elasticity of the first and second hinges 52 and 53. When the adjustment nut 73 is adjusted, the frictional force of the friction surface is adjusted to close the door. Will be adjusted.

In addition, when the control member 81 is moved by adjusting the adjustment member 81 to adjust the opening angle of the door while the straight projection 77 is inserted or separated in the cross-shaped groove 78 of the sliding member 76.

However, as described above, when the through hole is drilled in the second rotating member to give elasticity to the door closer, and the pressing protrusion is screwed therein and a very large number of parts such as fixing nuts are used, There is a problem that the manufacturing and assembly of the door closer becomes difficult.

In addition, the configuration for adjusting the closing speed of the door and the configuration for adjusting the stop angle of the door through the friction with the preliminary elasticity is complicated, making it difficult to manufacture and assemble.

Accordingly, an object of the present invention is to solve the above problems, the door closer to simplify the configuration of the door closure, and to facilitate the elastic adjustment of the door closer and to facilitate the closing speed adjustment and angle of the door. In providing.

In order to achieve the above object, the present invention provides a first rotating member inserted into and fixed to a first hinge, a second rotating member coupled to the first rotating member and axially slidable and supported by a spring; In the door closer comprising a torsion spring for applying elasticity to twist the first, second rotation member,

A transmission shaft having a polygonal shape protruding from the other end of the second rotating member, a first torsion anchor passing through the transmission shaft and intermittently engaged with the second rotating member and the sawtooth engaging jaw, and the first torsion The torsion base which is in close contact with the anchor and the transmission shaft is penetrated and interlocked with the transmission shaft is inserted and splined to the torsion base, which is screwed to the torsion base and coupled to move the torsion sleeve. It is characterized in that it comprises a fixed member and a pressure rod installed to press / disengage the locking jaw by pressing the transmission shaft.

1 is an exploded perspective view showing a door closer according to the present invention.

2 is an assembled cross-sectional view of FIG.

FIG. 3 is an exploded perspective view illustrating a coupling state of the torsion sleeve and the fixing member in FIG. 1; FIG.

4A is a cross-sectional view illustrating a state in which the spline of the torsion sleeve and the torsion base is separated from FIG. 1;

Figure 4b is a cross-sectional view showing a state in which the spline is coupled to Figure 4a,

Figure 4c is a cross-sectional view showing a state in which the locking step is separated by the pressure rod in Figure 4b,

5 is a schematic view showing a rotational state of the locking projection and the locking groove in Figure 1,

6A is a schematic diagram showing a state before the ratchet pin crosses the ratchet protrusion in FIG. 1;

6B is a schematic diagram showing a state when the ratchet pin crosses the ratchet protrusion;

7 is a cross-sectional view showing a door closer installed in a general door;

8 is an exploded perspective view of FIG.

Explanation of symbols on the main parts of the drawings

1: transmission shaft 2: locking jaw

3: first torsion anchor 4: torsion sleeve

5, 13: Spline 6: Torsion Base

7: fixing member 8: pressure rod

9: Hanging projection 10: Hanging groove

11: pressurization part 12: stopper

14: second torsion anchor 15, 19: spring

16: pressure nut 17: friction member

18: Installer 20: Ratchet Pin

21: ratchet protrusion 22: catch

23: incision 52: first hinge

53: second hinge 57: first rotating member

58: second rotating member 59: torsion spring

1 and 2 are exploded perspective and assembly cross-sectional views showing the door closer according to the present invention, the first rotating member 57 is fixed to the first hinge 52 with a key K, and the first A torsion spring coupled to the rotation member 57 and capable of sliding and supporting elasticity to twist the second rotation member 58 supported by the spring 63 and the first and second rotation members 57 and 58. 59, the transmission shaft 1 which is a polygonal shape protruding from the other end of the said 2nd rotation member 58, the said transmission shaft 1 penetrates, and the 2nd rotation member 58 and the saw tooth shape The first torsion anchor 3, which is intermittently engaged with the locking jaw 2 and is fixed to the first hinge 52 with the key K, and the first torsion anchor 3 are in close contact with each other and the transmission shaft 1 The torsion base 6 which is penetrated and engaged with the transmission shaft 1 and interlocked and rotated is inserted and coupled to the spline 5, and the torsion base 6 fixed to the second hinge 53 by a key K. In addition, the fixing member (7) is screwed to the torsion base (6) and coupled to move the torsion sleeve (4), and the pressure rod (8) installed to press the transmission shaft (1) Consists of.

In addition, a locking protrusion 9 protruding on one side of the first rotating member 57 and a locking groove 10 are formed so that the locking protrusion 9 is fitted, and the pressing part 11 protrudes at the other end. The formed stopper 12, the second stopper anchor 14 is inserted into the stopper 12 is coupled to the spline 13, and fixed to the second hinge 53 with a key K, and the second It is composed of a pressing nut 16 coupled to the torsion anchor 14 to compress the spring 15 for pressing the stopper 12, the contact between the engaging projection 9 and the engaging groove 10. At the position, the frictional member 17 on the plate is formed to face and adjusts the closing speed of the door as the pressure nut 16 is tightened.

In particular, the first torsion anchor 3 is provided with a plurality of installation holes 18, the spring 19 is inserted therein, the installation to receive the elasticity projected by the spring (19). The ratchet pin 20 is provided in the ball 18, The curved ratchet protrusion 21 is formed in the torsion base 6 so that the said ratchet pin 20 may be caught in a predetermined position.

That is, when the ratchet pin 20 is caught by the ratchet protrusion 21, the ratchet pin 20 is reciprocated while compressing the spring 19, and as a result, the rotational force of the first and second hinges 52 and 53 is reduced. By doing so, the moment the door is closed to reduce the speed of the door to close slowly.

When the fixing member 7 is inserted into the torsion sleeve 4, the locking portion 22 of the fixing member 7 is caught and does not easily come out. In order to insert the fixing member 7, As shown in FIG. 3, the fixing member 7 is inserted in the state where a plurality of upright cutouts 23 are formed in the torsion sleeve 4.

That is, while the torsion sleeve 4 is slightly extended in the incision 23, the locking portion 22 of the fixing member 7 is inserted, and the locking portion 22 is the torsion sleeve after the insertion. While being caught by the eve 4 will not be separated.

Referring to the operation and effect of the present invention as described above, when the operator installs the door closer, as shown in Figure 4a the door closer is a state in which the locking jaw (2) is separated, the torsion sleeve (4) And the spline 5 formed between the torsion base 6 is in a coupled state.

That is, the power is transmitted to the torsion sleeve 4 by the transmission shaft 1 of the polygon, and the power is transmitted to the torsion base 6 connected to the spline 5. When the two hinges 52 and 53 are rotated by a predetermined angle, the torsion spring 59 is twisted by a predetermined angle and a torsional elasticity is generated.

In this state, after the first and second hinges 52 and 53 are attached to the door and the door frame, the door is opened at a predetermined angle, and the opening angle of the door has a torsional elasticity as desired by the user. In this case, the locking rod 2 is engaged by releasing the pressure rod 8 described above.

As shown in FIG. 4B, when the engaging jaw 2 is engaged, the torsion elasticity is maintained because the first torsion anchor 3 and the first rotation member 57 are fixed to the first hinge 52. It becomes a state.

In this state, the fixing member 7 is rotated to move the torsion sleeve 4 and the spline 5 is separated.

When the spline 5 is separated, even if the torsion sleeve 4 is rotated by the transmission shaft 1, the spline 5 is turned away from the fixing member 7. Thus, the first and second hinges 52 and 53 are described. ) To make the door closed.

That is, the first and second hinges 52 and 53 are folded in a state of having a predetermined preliminary elasticity. When the preliminary torsional elasticity is set, the fixing member 7 as shown in FIG. 4C is shown. Rotate to allow the spline 5 to engage, and to rotate the pressure rod (8) so that the locking step (2) is separated.

When the latching jaw 2 is separated, the torsional elasticity of the transmission shaft 1 is applied to the second hinge 53 through the spline 5, whereby the torsional elasticity of the torsion spring 59 is removed. The first and second hinges 52 and 53 act as a closing force.

As described above, when the torsion spring is set in the torsion spring 59, the torsion occurs when the first and second hinges 52 and 53 are rotated, and the door is automatically closed.

When the door is closed, the closing speed is determined by the frictional force of the friction member 17 formed between the stopper 12 and the first rotating member 57. When the pressure nut 16 is tightened or released, As the spring 15 is compressed, the elastic force is increased / decreased, thereby increasing or decreasing the friction force between the friction members 17, thereby controlling the closing speed of the door.

Here, when the door is opened and closed, as shown in FIG. 5, the locking protrusion 9 adjusts the position of the stopper 12 to move in a portion where the locking groove 10 is not formed. Since the angle does not exceed 180 degrees, the locking groove 10 is not caught.

Of course, even if the locking projection 9 is adjusted to ride over the locking groove 10, the stopper 12 is coupled to the second torsion anchor 14, so that the spline 13, while moving in the axial direction The locking protrusion 9 allows the riding groove 10 to pass over.

6A and 6B, the ratchet pin 20 elastically supported by the spring 19 to the first torsion anchor 3 is ride over the ratchet protrusion 21 of the torsion base 6. When the rotation of the door is to be made slowly as the bar is formed, the ratchet protrusion 21 is formed at the closing portion of the door so that the door can be slowly closed so as not to make a loud sound when the door is closed.

Here, when releasing the torsional elasticity of the torsion spring 59, and attempting to open and close the door manually, the pressure rod 8 is released to engage the locking jaw 2 and the torsion sleeve 4 is engaged. Loosen so that the splines (5) are spaced apart.

When the spline 5 is spaced apart, the torsion spring 59 is not twisted, and the locking projection 9 and the locking groove 10 are engaged by the elasticity of the spring 15, so that the locking projection (9) and the locking groove 10 is in the position where the door is kept stopped.

That is, the door is opened at the portion where the engaging projection 9 and the engaging groove 10 are engaged.

As described above, the present invention is capable of performing functions such as latch stop position adjustment, automatic closing speed adjustment, and torsional elasticity adjustment of the door even with a relatively simple configuration, which has the advantage of facilitating assembly and manufacture of the door closer. .

Claims (4)

A first rotating member inserted into and fixed to the first hinge, a second rotating member coupled to the first rotating member and axially slidable and supported by a spring, and elastic to twist the first and second rotating members. In the door closer comprising a torsion spring for applying a, A transmission shaft having a polygonal shape protruding from the other end of the second rotating member, a first torsion anchor passing through the transmission shaft and intermittently engaged with the second rotating member and the sawtooth engaging jaw, and the first torsion The torsion base which is in close contact with the anchor and the transmission shaft is penetrated and interlocked with the transmission shaft is inserted and splined to the torsion base, which is screwed to the torsion base and coupled to move the torsion sleeve. And a fixing member which is configured to press the transmission shaft and to engage / separate the locking step. The method of claim 1, A locking protrusion protruding on one side of the first rotating member, a locking groove formed so that the locking protrusion is fitted, and a stopper having a pressing portion protruding from the other end, and the stopper is inserted into a spline and fixed to the second hinge. And a pressurized nut coupled to the second torsion anchor and a spring coupled to the second torsion anchor to pressurize the stopper. The method of claim 2, And a friction member which is formed at a contact position between the locking projection and the locking groove and is manufactured in a flat shape to adjust a closing speed of the door according to tightening of the pressure nut. The method according to any one of claims 1 to 3, A plurality of installation holes are formed in the first torsion anchor, a spring is inserted therein, a ratchet pin is installed in the installation hole so as to receive elasticity projected by the spring, and the ratchet pin is predetermined. Curved ratchet protrusion is formed in the torsion base to be caught in the position is configured to reduce the speed at the moment of closing the door closer.