KR200209588Y1 - Vertical type door closer - Google Patents

Abstract

The present invention is to devise a vertical door closer to prevent noise by the door and to ensure the convenience of the user by quickly opening and closing when the door is opened and slowly closed by the hydraulic pressure when the door is closed.

To this end, the present invention is a cylinder, a pintle housed in the cylinder to transmit the rotation of the door, a spring holding the cylinder and the pintle between the pintle, and a door closure closing the lower end of the cylinder, the lower surface of the pintle Is an involute curved surface which is formed to be inclined at a predetermined angle, the bearing ball being in close contact with the involute curved surface is inserted into the upper surface of the upper and lower vibration mechanisms which are supported by the tangent spring to seal the small cylinder formed at the lower end thereof; Characterized in that the flow path is formed to communicate between the upper cylinder and the small cylinder is formed closed by the bottom of the pintle and the bottom cap.

Accordingly, the present invention is a vertical door closer, which ensures a smooth and smooth operation of the door so that no noise or safety accident occurs, and is a useful and effective design for achieving high performance and compactness as a closure.

Description

Vertical Door Closer {VERTICAL TYPE DOOR CLOSER}

The present invention is to devise a vertical door closer to prevent noise by the door and to ensure the convenience of the user by quickly opening and closing when the door is opened and slowly closed by the hydraulic pressure when the door is closed.

Door closer is to close the door automatically and is now widely used for the automatic closing of general entrance doors or fire doors in office and residential buildings, and thus many proposals and improvements have been made. The general configuration is as shown in FIG.

In the main body 200 of the door closing device, in which the working fluid is stored and sealed, a piston 201 is pushed in the direction in which the door is closed by the spring 202. The rack 203 is formed at one side of the piston 201. The rack 203 is engaged with the pinion 204 formed at one end of the first arm of the link 205.

A flow path 207 having a check valve 206 is formed inside the piston 201, and the first return flow path 208 of the large diameter and the second return flow path 209 of the small diameter are formed on one side of the movement path of the piston 201. ) Is formed.

The main body 200 and the link 205 are fixed to the door and the door frame, respectively. When the door is opened, the pinion 204 rotates and moves the rack 203 to the left so that the piston 201 moves to the left while compressing the spring 202.

When the external force applied to the door is removed, the piston 201 returns to its original position by the restoring force of the spring 202. At this time, when the tip of the piston 201 is forward of the first return passage 208, the working fluid pushed by the piston 201 in the flow path 207 is returned through the first return passage 208 and the second return passage 209. Then, when the tip of the piston 201 passes the first return passage 208, the working fluid is returned only to the second return passage 209 of the small diameter. Thus, the door is decelerated just before closing and smoothly closed, thereby preventing shock and noise.

The door closing device operating through the above-described principle is installed and operated in the door 2 and the door frame 1 as shown in FIG.

Door 2 is coupled to the hinge (H) on one side of the rectangular door frame (1) surrounding it.

The main body 200 of the door closing device is attached to the door 2 and the link 205 is connected to the main body 200 with the first arm and the door frame 10 with the second arm. Opening the door 2 causes the link 205 to rotate to operate the door closing device.

The first arm and the second arm are hinged to each other, and the adjusting arm is screwed to the second arm so as to adjust its length so as to be rotatable. The closing force can be adjusted by adjusting the length of the second arm via the adjustment arm.

Such a conventional door closing device translates the piston 201 in the main body horizontally installed through the rotation of the link 205, so that the length of the main body 200 is long, Since the link 205 is quite large, it protrudes from the door 2 and the door frame 1 and damages the appearance of the door 20 and there is a risk of a safety accident.

A number of vertical door closers devised to solve this problem have been proposed, including one's own design, but the earliest form is as shown in cross section in FIG. 8 as an imported product of Japan, which is roughly extended in the vertical direction. In the cylinder 101 configured to have a cylindrical shape and a working fluid therein, a piston 102 elastically pushed upward by a spring 103 is installed, and the piston 102 has a spline key 102a on the outside thereof. Is protruded to prevent rotation by the key groove (101a) formed in the cylinder 101, the screw groove 102b is formed on the inside.

On the other hand, the pintle 104 extending to the outside of the cylinder 101 is coupled to the first bracket (B1), the upper side of which is connected to the door frame, the screw groove 102b of the piston 102 on the lower outside The multi-threaded screw 104a is formed to be engaged with the multi-thread. Meanwhile, the cylinder 101 is coupled to the second bracket B2 on the door side.

A rib 105 is formed at one side of the cylinder 101 to form a flow path 106 for movement of the working fluid, and the flow rate of the working fluid is adjusted by the adjusting screw 107. . The remaining reference numeral 108 is an end cap, 109 is a check valve, and 110 is a set screw groove.

Such a conventional vertical door closer is prevented by the spline key 102a and the key groove 101a when the second bracket B2 rotates the cylinder 101 with respect to the pintle 104 by opening the door. The piston 102 is moved downward while pressing the spring 103 instead of rotation.

After the external force applied to the door is removed, the piston 102 is raised by the restoring force of the spring 103. At this time, the working fluid is narrowed through the inlet flow path 106c with the check valve 109 blocked. The closing speed of the door is limited because it is returned to 106a, and after the piston 102 passes through the tip of the first return flow path 106a, the working fluid is moved to a narrower second return flow path 106b, so that the door is closed. Is decelerated and buffered.

The cylinder 102 is coupled to the second bracket (B2) connected to the door to operate integrally with the bar, in the above conventional configuration, the combination of both as shown in Figure 3, the second bracket ( A plurality of protrusions 11 are formed on the outer circumference of the connection head H2 of B2), and a protrusion jaw 112 having a coupling groove 113 engaged with the protrusion 111 is formed at the upper end of the cylinder 101. have.

Meanwhile, since the pintle 104 in the cylinder 101 is coupled to the first bracket B1 connected to the door frame as described above, when the user opens the door, the cylinder 101 coupled thereto rotates so that the pintle 104 and the cylinder are rotated. 101 is relatively rotated, and thereby the automatic closing operation is achieved by the piston 102 coupled to the pintle 104 by the multi-threaded screw 104a is lowered.

However, the above-described conventional initial vertical door closer has various problems. For example, since the rotational motion must be converted to the up and down motion by the multi-threaded screw and vice versa, severe wear is likely to occur when the surface contact between the spirals is small. The durability of the multi-threaded screw is also vulnerable to hand wear because the rotation of the door is limited to 180 ° so that the movement of the movement must be made within this angle. As the spring stored in the cylinder is compressed and restored, it is used as a restoring force to close the door again by its force. The spring stored in the small cylinder can not only be made smaller, which increases the elastic modulus of the spring, which leads to a smooth door closing. There is a problem that cannot be obtained.

The present invention has been made to solve the above problems, the first problem is to provide a vertical door closer that automatically closes the door while ensuring smooth and smooth operation can be sealed off the source of noise or safety accidents Secondly, it was developed to improve the performance as an automatic door closer and to compact the structure, but to increase its durability and performance. It is a structure called a buffer port consisting of one or more cylinders with a pintle for tilting rotation. To solve the problem by providing a, it will be described in detail with reference to the drawings below.

1 is a development state of the configuration of the present invention,

2 is a cross-sectional view of the assembled state of the present invention,

3 is an operating state of the present invention,

4 is another exploded view of the configuration of the present invention,

5 is a cross-sectional view of the assembled state of the present invention,

Figure 6 is a cross-sectional view of the configuration state of the prior art,

7 is an operating state diagram of a conventional design,

8 is a cross-sectional view of a configuration state of another conventional design.

* Signs of major parts of drawings

1. Door frame 11. Mounting hole 12. Stopper

2. Door 21. Attachment 22. Stopper

3. Door closer

30. O-Ring

31.Cylinder 312.

32a. Buffer 321a. Lubricating surface 322a. Retainer

323a. Piston rod 324a. Small cylinder

33. Spring

33a. Up / Down mechanism 331. Tanger spring 332. Bearing ball

34. Pintle 341. Smooth surface 341a. Involute Curved Surface

342. Rotational Limit

343.Rim 344.Cap holder 345.Tension bolt

346a. Horizontal groove 346b. Vertical groove

35. Upper oil room 35 '. U Oil Room

36. Lower oil room 36 '. Left oil room

37. Flow path 371. Check valve 371a. Ball 371b. Check Spring

38.Adjusting rod 381 '. Attachment 382. Helix

383. Head 384. Jig

39. Lower plug 391. Helix 392. Axis

101. Body 101a. Keyway 102. Piston 102a. Spline key

102b. Thread groove 103. Spring 104. Pintle 104a. Multi-thread screw

105. Rib 106. Euro 106a. First return route 106b. Second return route

106c. Entrance

107. Adjustment screw 108. End cap 109. Check valve 110. Set screw

B1. First bracket B2. Bracket 2

200. Body 201. Piston 202. Spring 203. Rack

204. Pinion

205. Link 205a. First arm 205b. Second arm 205c. Adjustable arm

206. Check valve 207. Euro 208. First return passage 209. Second return passage

H. hinge

Figure 1 is a developmental state of the configuration of the present invention, Figure 2 is a cross-sectional view showing a cross-sectional view in the vertical direction in the assembled state of the present invention, Figure 3 is a plan view showing an operating state of the present invention in plan view 3b Inversely, it shows the state attached to the upright, Figure 3a shows the state attached normally upright.

The present invention, as shown in the drawings, the cylinder 31 to form a space in the center of the inner surface, the pintle 34 is received in the cylinder 31 to transmit the rotation of the door 2, and the cylinder ( In the door closer (3) consisting of a spring (33) holding between the 31 and the pintle (34), and a bottom cap (39) sealing the lower end of the cylinder (31), the bottom face of the pintle (34) is An involute curved surface 341a which is formed to be inclined at a predetermined angle, and a bearing cylinder 332 in close contact with the involute curved surface 341a is inserted into the upper surface of the small cylinder 324a formed at the lower end thereof. Between the upper and lower vibration mechanisms 33a supported by the closed spring spring 331 and the upper oil room 35 and the small cylinder 324a formed by being sealed by the lower surface and the lower plug 39 of the pintle 34. It is characterized in that the flow passage 37 is formed to communicate.

In the above-described configuration, it is preferable that another flow passage 37 'is formed in the upper and lower vibration mechanisms 33a, and the check valve 371 is provided separately from the flow passage 37.

In the above-described configuration, it is further characterized in that the attachment rod 38 is attached to the bottom cap 39 so as to adjust the opening and closing area of the flow passage 37 on the flow passage 37. desirable.

Figure 4 is an exploded view of another configuration state of the present invention, Figure 5 is a cross-sectional view shown by cutting in the horizontal direction in the assembled state of the present invention,

In the above configuration, the lower end of the pintle 34 is inclined at a predetermined angle so that the bottom thereof becomes a smooth surface 341, and symmetrically on both lower ends of the lubricating surface 321a facing the smooth surface 341. A buffer port 32a comprising a retainer 322a to be attached, a piston rod 323a for storing a small cylinder 324a filled with fluid, respectively, and retaining the retainer 322a, and the buffer port 32a. Characterized in that it consists of a flow path 37 for communicating between both small cylinders (324a).

The present invention constituted as described above is installed as shown in Figures 3a, 3b and functions as follows, first described the installation of the present invention.

In the case where it is to be installed in the forward direction as shown in FIG. 3a, after the bracket 11 is installed on the door frame 1 side, the bracket 11 is inserted into the recess (of course, it may be attached without the recess). However, in this case, the bracket 11 protrudes into the door frame 1, which is not desirable in terms of appearance or function.} After fastening with a predetermined number of screws, the bracket 21 is attached to the door 2 side in the same manner as above { Of course, in the door 2 and the door frame 1 to which the present invention is applied, brackets 11 and 21 are already attached and provided, but here, an example applied to a general door will be described to show that a conventional door can be applied. And support the two brackets (11, 21) through the cap holder 344 at the same time (in this state, the lower portion of the door 2 is supported by the normal hinge (H), the upper portion is supported by the cap holder 344) The door 2 is fixed to the door frame 1 as it is. When the pintle 34 of the door closer 3 of the present invention is inserted into the cap holder 344, the bracket 21 on the side of the door 2 also fits into the mounting recess 313 of the cylinder 31. It is fitted together, and then completes the installation by fastening the stoppers 12 and 22, respectively.

The function of each part of the present invention installed as described above will be described in detail.

According to one configuration of the present invention, the cylinder 31 which forms a space in the center of the inner surface, the pintle 34 which is accommodated in the cylinder 31 to transmit the rotation of the door 2, and the cylinder 31 And a door closer 3 composed of a spring 33 for holding the pintle 34 between the pintle 34 and a bottom cap 39 for sealing the lower end of the cylinder 31, which is a conventional vertical door. It is a basic hardware configuration of the closure, and in addition, the lower surface of the pintle 34 is an involute curve surface (341a) is formed to be inclined at a predetermined angle, the upper and lower mechanism 33a in close contact with the involute curve Since the surface 341a is in contact with the bearing ball 332, when the door 2 and the door frame 1 rotate relative to each other, the cylinder 31 and the pintle 34 also rotate relatively, as described above. The lower surface of the pintle 34 is an involute curved surface 341a, This rotation causes the vertical vibration mechanism () supported by the tangent spring 331 to smoothly move up and down in the small cylinder 324a. That is, the lower surface of the pintle 34 acts to press the involute curve surface 341a to press the upper and lower vibration mechanisms 33a, and the tangent spring 331 acts to push up the upper and lower vibration mechanisms 33a. The bearing ball 332 of the lowering mechanism 33a always moves up and down along the involute curve surface 341a. In this case, the involute curve refers to a curved surface that forms a spiral shape. It means to rise / fall.

In addition, it is described that the relative rotation between the door (2) and the door frame (1), as shown in Figure 3a when the door closer (3) of the present invention is attached in the forward direction, the cylinder 31 is a door ( 2) and the pintle 34 is fixed to the door frame 1, so that the cylinder 31 is rotated with respect to the pintle 34, as shown in Figure 3b the door closer 3 of the present invention in the reverse direction When attached, the cylinder 31 is attached to the door frame 1 and the pintle 34 is inserted into the door 2 and interlocked so that the pintle 34 rotates with respect to the cylinder 31. It is apparent that the present invention can be installed in any state of the above two figures, and there is no difference in its function.

In addition, the small cylinder 324a is injected with oil, and a flow path communicating between the upper oil room 35 and the small cylinder 324a formed by being sealed by the lower surface of the pintle 34 and the lower cap 39. A 37 is formed so that a narrow flow path formed between the upper oil room 35 and the small cylinder 324a restricts the rapid movement of the up / down mechanism 33a, which prevents the rapid opening and closing of the door 2. Function to prevent it.

Moreover, the spring 33 holds between the cylinder 31 and the pintle 34, and both ends thereof are inserted into the grooves 313 of the cylinder 31 and the horizontal grooves 346a of the pintle 34, respectively. When the pintle 34 rotates, it is wound like a clockwork, and at the moment when the opening force applied to the door 2 side is released, the restoring force causes the relative rotational force between the cylinder 31 and the pintle 34 to be returned to its original state. The door 2 is automatically closed by returning, but the upper and lower vibration mechanisms 33a are also operated in the reverse order, so that the door 2 is gradually closed.

On the other hand, reference numeral 392 is formed to protrude from the middle body of the lower plug 39 as the support shaft to support the center of the lower surface of the pintle 34, which allows the pintle 34 can be rotated silently, The indentation portion is also formed in the contact surface with the mechanism 33a to guide the upper and lower pendulum mechanism 33a to move up and down in place. It is obvious that the technical idea of the present invention does not exceed the technical scope of the present invention. .

In addition to the above-described configuration, another configuration of the present invention is that another flow passage 37 'is formed in the upper and lower vibration mechanisms 33a separately from the flow passage 37 so that the check valve 371 is installed. When the door 2 is opened on the other flow path 37 'in which the check valve 371 is installed, the check valve 371 opens the flow path and vice versa to open it. It provides a large flow path (37 + 37 ') to provide a structure that allows for rapid opening and closing slowly, which is consistent with the function of a true door closer.

In addition, in addition to the above-described configuration, another configuration of the present invention is the adjustment rod 38 which is attached to the lower stopper 39 so that the attachment on the flow path 37 to adjust the opening and closing area of the flow path 37. In this case, the adjustment rod 38 is configured to be driven from the center of the lower stopper 39 to the upper side as shown, for example, and is attached with a cuboidal shape or a spherical shape at the top and a lower stopper. Consists of a spiral portion 382 to be screwed to (39) and a jig portion 385 formed in the head portion 383 to transmit the rotational force, the O-ring 30 is inserted into the head portion 383 as a sealing means In this case, the front end of the door closer (3) is controlled by controlling the amount of outflow by controlling the amount of oil outflow by a certain amount or less by blocking the part or the whole so that the tip has a cross-sectional area that matches the cross-sectional area of the flow path (37). Opening and closing speed can be adjusted .

In addition to the above configuration, another configuration of the present invention is the same as the basic configuration of the door closer (3), but in addition to the basic hardware configuration of such a conventional vertical door closer, the lower end of the pintle 34 at a predetermined angle A retainer 322a which is symmetrically attached to both lower ends of the lubricating surface 321a which faces the smooth surface 341 to the smooth surface 341, and the bottom surface thereof becomes a smooth surface 341, and the retainer A piston rod 323a for sealing the small cylinder 324a filled with the fluid and filled in the 322a, respectively, is attached to the door 2 or the door frame 1 side and the cylinder is opened when the door 2 is opened. Tilting the surface without friction with the lubricating surface 321a which is interviewed while the smooth surface 341 formed at its lower end by the pintle 34 making a relative rotational movement with respect to the 31 is rotated. The angle of inclination of the left and right sides). Retainers 322a are symmetrically attached to both lower ends of 321a so that both retainers 322a are vertically moved up and down, and stored in these retainers 322a. The piston rods 323a are pumped in the small cylinder 324a formed at the lower end thereof, which is small by the flow passage 37 communicating between the small cylinders 324a on both sides of the buffer hole 32a. Since the oil filled in the cylinder 324a is moved slowly, it is possible to prevent the sudden opening and closing of the door (2). Of course, at this time, the upper portion of the pintle 34, rim 343 having a large diameter should be formed so as not to be caught off the partition formed on the upper end of the cylinder 31.

Moreover, the spring 33 holds between the cylinder 31 and the pintle 34, and both ends thereof are inserted into the grooves 313 of the cylinder 31 and the horizontal grooves 346a of the pintle 34, respectively. When the pintle 34 is rotated, it is wound like a clockwork and the door 2 is automatically closed as the restoring force returns the pintle 34 to its original state at the moment when the force to open to the door 2 is released. In this case, the buffer port 32a is operated in the reverse order to allow the door 2 to be closed slowly.

In addition, the above-described structure is a structure in which the door closers need only be filled with oil only in the two small cylinders 324a built in the cylinder 31, whereas the conventional door closers are filled with oil in the entire cylinder 31. Easy to provide, easy to compact and economical, the operation is much smoother.

Furthermore, compared with the first configuration (shown in FIGS. 1 and 2) of the present invention, the first configuration is a part of the cylinder 31 as the upper oil room 35, and the oil chamber facing the small cylinder 324a. By restricting the opening / closing speed of the door 2 by the flow of oil at a constant speed in the flow path 37 communicating therebetween, in this configuration, the upper oil room 35 is omitted and two small cylinders 324a. , 324a is formed between the flow paths 37 to provide a slightly complicated structure by adjusting the speed, but the accuracy is more improved.

The present invention provides a vertical door closer that automatically closes the door, and ensures smooth and smooth operation of the door to prevent the occurrence of noise or safety accidents, and improves its performance as an automatic door closer. It is a useful and effective design that allows the structure to be compact while increasing its durability and performance.

Claims (4)

A cylinder 31 which forms a space in the center of the inner surface, a pintle 34 accommodated in the cylinder 31 to transmit the rotation of the door 2, and between the cylinder 31 and the pintle 34 In the door closer (3) consisting of a spring (33), and a bottom cap (39) for sealing the lower end of the cylinder (31), The lower surface of the pintle 34 is an involute curved surface 341a which is formed to be inclined at a predetermined angle, The upper and lower vibration mechanisms 33a supported by the bearing spring 331 sealing the small cylinder 324a formed at the lower end of the bearing ball 332 in close contact with the involute curve surface 341a is inserted into the upper surface thereof. , The vertical door closer, characterized in that the flow path 37 is formed between the upper oil room 35 and the small cylinder 324a which is formed to be closed by the bottom of the pintle 34 and the bottom cap 39 is formed. . The method of claim 1, The lower end of the pintle 34 is inclined at a predetermined angle so that the bottom thereof is a smooth surface 341, Retainers 322a attached symmetrically to both lower ends of the lubricating surface 321a facing the smooth surface 341, and a small cylinder filled with fluid filled in each of the retainers 322a. The shock absorbing port 32a which consists of the piston rod 323a which seals the 324a, The vertical door closer, characterized in that consisting of a flow passage (37) for communicating between the small cylinder (324a) on both sides of the buffer port (32a). The method according to claim 1 or 2, A vertical door closer, characterized in that another flow passage (37 ') is formed in the upper and lower vibration mechanisms (33a), and a check valve (371) is provided separately from the flow passage (37). The method according to claim 1 or 2, Vertical door closer, characterized in that the attachment is installed on the flow path (37) to be attached to the bottom cap (39) to be installed so as to adjust the opening and closing area of the flow path (37).