KR101061897B1 - Floor hinge assembly - Google Patents

Abstract

The present invention relates to a floor hinge assembly, an elastic unit interlocked by a hinge shaft is installed in a casing buried in a floor of a building entrance, and when the door is opened, the hinge shaft rotates to compress the elastic unit, and the elastic unit elasticity. In the floor hinge configured to reverse the hinge shaft to the restoring force to close the door, a cam is formed integrally with the hinge shaft received inside the casing, and is installed on the upper and lower portions of the cam to convert the rotational movement of the hinge shaft into linear movement. The upper plate and the lower plate provided with a roller in contact with the cam, and a fixing piece inserted between the upper plate and the lower plate on one side facing the upper plate and the lower plate is formed so that the fixing piece and the upper plate and the lower plate are fastened through the inside of the casing A piston moving forward and backward in the formed cylinder, and installed inside the piston, and A floor hinge comprising a check valve installed on a supply flow path for lubricating the inside of the linder, and a pressure adjusting bolt installed on a discharge flow path formed in the casing for discharging the hydraulic oil supplied through the check valve into the casing. An assembly is provided.

Door, Floor Hinge, Tempered Glass Door, Shock Absorbing, Hinge, Door

Description

Floor hinge assembly

The present invention relates to a floor hinge assembly, and more particularly, a structure of a floor hinge assembly that buffers or dissipates an excessive rotational force acting on a hinge axis when the door is rotated to open and close by an external force so that the door can be closed slowly. It relates to a floor hinge assembly that can significantly improve the workability and workability and workability of parts.

In general, the door is installed in a place that needs to be opened or closed, such as a boundary of a place, an entrance of a building or an emergency exit where a person enters and exits, and is installed to open and close the door freely in one or two directions.

The door is a hinge assembly is installed so that the door is closed by its resilience after the door is opened to the external force, the hinge assembly is installed in the form of a hinge on one side of the door or buried in the bottom of the door In this case, the floor hinge assembly is embedded in the bottom of the door.

In particular, the floor hinge assembly supports a door of a heavy load made of glass or tempered glass and controls opening and closing, and a hinge shaft protruding from the inside of the casing embedded in the floor where the door is installed is provided at the bottom of the door. It is coupled to one side so that the door is closed slowly by buffering or dissipating the excessive rotational force acting on the hinge axis when the door is rotated to open and close by the external force around the hinge axis.

To this end, the applicant has filed and registered Utility Model Registration No. 20-0324628, "Floor Hinge."

1 and 2, the floor hinge is buried in the bottom of the lower building of the door, and a return spring which is linked by the hinge shaft is formed in the substantially rectangular casing, and the hinge shaft is operated when the door is opened. In the floor hinge for the door is configured such that the return spring is compressed and the return spring is restored to its original state by the elastic restoring force to reverse the hinge axis to close the door,

It is fitted to the hinge shaft 10 protruding from the inside of the casing 100 to the outside, the longitudinal movement is possible by the operation of the cam 60, the rod 22 is formed on one side is coupled to the piston 40 The upper plate 20 and the lower plate 30 are provided, and the support flange 32 having the engaging pieces 33 is formed at both ends of the lower plate 30 so as to be coupled by the upper plate 20 and the bolt 70. On the other hand, the return spring 50 is fitted to both of the engaging pieces 33 is characterized by being supported by a support bolt 52 fitted in the casing 100, the rear screw hole 106.

The floor hinge has a hinge shaft 10 protruding from the inside of the substantially rectangular casing 100 to the outside, and the hinge shaft 10 has a lower end fitted to the housing 110 formed at the bottom of the casing 100. The upper part is fixed by being inserted into a hole formed in the lid 120, the protruding upper end is coupled to the door (not shown). The lower surface of the lid 20 is formed with a bearing groove 122 for fitting a bearing (not shown) to reduce the friction force when the hinge shaft 10 is rotated.

On the other hand, the hinge shaft 10 has a plate-like rod 22 is formed on one side, the upper plate 20 and the lower plate 30 is formed in the plurality of bolts 70 and the operation hole 24 is formed long in the longitudinal direction In this case, a roller 72 is inserted into the bolt 70 so that the upper plate 20 and the lower plate 30 maintain a predetermined interval, and the rod 22 formed on the upper plate 20 and the lower plate 30. The insertion groove 44 is formed in the piston 40 so that the end thereof is fixedly coupled to the piston 40.

A fastening hole 46 penetrating the rod 22 and the piston 40 is formed in the rod 22 and the piston 40, respectively, and a fastening screw 48 is assembled to the fastening hole 46. The rod 22 and the piston 40 are then fixedly coupled.

In addition, a cam 60 is inserted between the upper plate 20 and the lower plate 30, but the cam 60 is eccentrically fixed to the hinge shaft 10, and the engaging pieces 33 are formed at both ends of the lower plate 30. ) Is formed, the support flange 32 is formed, one side of the elastic return spring 50 is fitted to the engaging piece 33 and the other side of the return spring 50 is the support bolt (fitted to the rear of the casing 100 ( 52) is fixed and supported.

Here, the engaging piece 33 is provided with a washer 34 so that the circular return spring 50 receives a uniform force, and the support bolt 52 is a screw hole formed at the rear of the casing 100. By being fitted to the 106, the protrusion 53 is formed so that the return spring 50 can be fitted.

At this time, the protrusion 53 is formed to have a sufficient length to prevent the bending of the spring 50, the reference numeral 42 in the drawings is fitted for the maintenance of the inside of the casing 100 or the piston (40) during assembly A finishing bolt is shown, 102 is a hydraulic oil injection hole for injecting the hydraulic oil to the casing 100, 104 is a pressure adjusting bolt 104 for adjusting the internal pressure of the casing (100).

The conventional floor hinge is a torque that acts on the hinge shaft 10 when the pair of return springs 50 are installed on the support flange 32 formed on both sides of the lower plate 30 so that the hinge shaft 10 is rotated. To dissipate so that the door closes slowly.

However, the floor hinge described above has a difficulty in coupling and fixing the rod 22 and the piston 40 extending from the upper plate 20 and the lower plate 30.

In other words, the rod 22 extending from the upper plate 20 and the lower plate 30 penetrates the piston 40 and the rod 22 while being inserted into the insertion groove 44 formed in the traveling direction of the piston 40. Since the fastening screw 48 is assembled to the fastening hole 46, it is difficult to drill a hole for forming the fastening hole 46 in the piston 40, and the rod 22 and the insertion groove 44 according to a long time use are difficult. It is difficult to secure the straightness of the piston 40 due to the clearance between them.

That is, in order to form the fastening hole 46 in the piston 40, the piston 40 is bitten and fixed to the chuck of the drilling machine and drilled through drilling. However, since the piston 40 has a cylindrical shape, the drill slides at a curved surface formed at the outer diameter of the piston 40 at the initial stage of drilling, thereby preventing the drill from being correctly positioned. As such, when the drill does not puncture the piston 40 at the proper position and is deviated, it is difficult to assemble the fastening screw 48 for fastening the rod 22 and the piston 40 through.

In addition, when drilling, the piston 40 is fixed to the chuck of the drilling machine so that the piston 40 does not move. At this time, if the piston 40 is excessively bitten and fixed to the chuck, the piston 40 Deformation occurs, thereby making the linear movement of the piston 40 assembled in the casing 100 difficult or filling a gap in the casing 100 by forming a gap between the casing 100 in contact with the outer diameter of the piston 40. The hydraulic fluid is leaked into the gap, making it difficult to buffer the rotating shaft 10.

At the same time, the fixing of the rod 22 and the piston 40 through the fastening screw 48 may cause breakage of the fastening screw and the rod.

That is, as the hinge shaft 10 rotates, the cam 60 moves the upper plate 20 and the lower plate 30 in one direction, and thus the rod 22 formed on the upper plate 20 and the lower plate 30. When the piston 40 is fastened and fixed in a linear motion, some of the excessive rotational force acting on the hinge shaft 10 is buffered or dissipated so that the door can be slowly closed.

However, the fastening screw 48 is inserted into the insertion hole 44 formed in the piston 40 and fastened to the rod 22 by the fastening screw 48, according to the rotation of the hinge shaft 10. Since the stress is applied to the connection part of the fastening screw 48 not only causes damage, but also the fastening screw 48 is fastened in the fastening hole 46 according to the repetitive linear movement of the piston 40 according to the long time use. As the rod 22 is twisted to the left and right about the fastening screw 48 during the linear movement of the piston 40 while being released, torsional stress is applied to the rod 22, causing breakage of the rod 22.

In addition, since the length of the rod 22 formed on the upper plate 20 and the lower plate 30 and connected to the piston 40 is long, the length of the casing 100 is naturally long to be increased, and thus construction Since the construction area of the sea floor hinge assembly is unnecessarily increased, and all parts are made of metal, the required amount of metal increases as the length increases, which makes the weight considerably heavy, which makes it difficult to transport and construct.

The present invention is to solve the above problems, by having a structure that can be fixed to the rod and the piston without drilling the outer diameter of the piston to improve the processability of the parts and thereby to improve the productivity of the product The purpose is to provide a floor hinge assembly.

In addition, by uniformly transmitting the linear movement of the piston according to the rotation of the hinge shaft to the piston to provide a floor hinge assembly that can be performed stably because there is no stress concentrated on the parts, thereby preventing damage to the parts in advance. There is a purpose.

In addition, it is an object of the present invention to provide a floor hinge assembly that can significantly improve the effect and workability while reducing the size.

According to the technical idea of the present invention for achieving the above object, an elastic unit interlocked by a hinge shaft is installed in a casing embedded in the floor of a building entrance, and when the door is opened, the hinge shaft rotates to compress the elastic unit. In the floor hinge configured to close the door by rotating the hinge axis to the elastic restoring force of the elastic unit,

An upper plate and a lower plate having cams integrally formed with the hinge shafts supported in the casing, and installed on the upper and lower portions of the cams, the rollers contacting the cams to convert the rotational movements of the hinge shafts into linear movements;

A piston that is inserted between the upper plate and the lower plate at one side facing the upper plate and the lower plate, and the piston is retracted in the cylinder formed inside the casing by fastening the fixing piece and the upper plate and the lower plate,

A check valve installed inside the piston and provided on a supply flow path for supplying hydraulic fluid inside the casing to the inside of the cylinder;

It is achieved by a floor hinge assembly comprising a pressure adjusting bolt installed on the discharge flow path formed in the casing for discharging the working oil lubricated through the check valve into the casing.

Here, the upper plate and the lower plate has a plate-like shape is positioned to face up and down, the operating hole is formed with a hinge axis is formed in each of the upper plate and the lower plate, the support plate is formed to extend at both ends of the position facing the operating hole The support plate formed on the upper plate is bent downward toward the support plate of the lower plate is preferably in contact with the support plate of the upper plate and the lower plate.

In addition, it is preferable that a fastening hole located on the same axis is formed in each of the upper and lower plates and the fixing pieces of the piston, and the fastening screw is inserted and fastened.

In addition, it is preferable that one side of the operating hole formed in the upper plate is opposite to the piston.

And, it is preferable that an oil supply port is formed on one surface of the piston in contact with the upper plate and the lower plate, and includes a filter net provided between the oil supply port and the check valve.

In addition, the elastic unit is preferably any one of a return spring or a cylindrical elastic member.

In addition, it is preferable that the cutting groove is formed at the base of the pressure control valve.

Floor hinge assembly according to the present invention, to convert the rotational movement of the hinge shaft 220 to a linear movement to secure the fastening structure of the upper plate 240a and lower plate 240b and the piston 250 to be transmitted to the piston 250. It is possible to improve the machinability of the parts.

That is, the fastening structure of the piston 250 of the upper plate 240a and the lower plate 240b according to the present invention does not form a fastening hole in the outer diameter of the piston 250 but has a flat surface formed on one side of the piston 250. By forming the fastening hole 253 in the fixing piece 251, it is possible to easily and accurately perform the drilling process for forming the fastening hole 253 of the fixing piece 251.

In addition, the linear movement of the piston 250 according to the rotation of the hinge shaft 220 is uniformly transmitted to the piston 250 to stress the portion where the piston 250, the upper plate 240a and the lower plate 240b is fixed. It can be prevented from being broken by being concentrated, from which it is possible to ensure the straightness of the piston 250 advancing and retracted from the cylinder 214 formed inside the casing 210, the piston 250 outer diameter and the cylinder 214 ) It can prevent a part of the inner diameter from being worn too close.

In addition, since the piston 250 and the upper plate 240a and the lower plate 240b are directly connected, the rod 22 for connecting the piston 40 and the upper plate 20 and the lower plate 30 as in the prior art is unnecessary. The volume as much as the rod 22 occupies can be reduced to significantly reduce the size of the floor hinge assembly, thereby reducing the workload associated with the transportation and construction of the product.

In addition, by forming the “V” type cutting groove 292 at the base end of the pressure adjusting bolt installed on the discharge flow path, it is possible to prevent excessive pressure caused by the working oil inside the cylinder 214.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is a partially cutaway perspective view of the floor hinge assembly according to the present invention, Figure 4 is an exploded perspective view of a floor hinge assembly according to the present invention, Figure 5 is a side cross-sectional view showing a floor hinge assembly according to the present invention.

Referring to the drawings, the floor hinge assembly 200 according to the present invention is embedded in the floor of the building in which the door is installed, the elastic unit is interlocked by the hinge shaft 220 inside the substantially rectangular casing 210 ( 230 is formed, the hinge shaft 220 is rotated when the door is opened to maintain the elastic unit 230 in a compressed state, the hinge shaft 220 is rotated in this way the elastic unit 230 is in the original state The door is closed by being rotated in a direction opposite to the direction of rotation when opened by the elastic force to be restored.

In addition, when the door opened by the external force is rotated to close by the elastic unit 230 to dissipate the excessively concentrated moment (Moment) on the hinge shaft 220, the check valve 270 to be closed slowly when the door is closed Bar is installed, the filter net 280 is installed to filter the impurities contained in the hydraulic fluid when the hydraulic oil in the casing 210 is supplied to the check valve 270.

Particularly, the floor hinge assembly 200 according to the present invention converts the rotational movement of the hinge shaft 220 into a linear motion and fastens the upper plate 240a and the lower plate 240b and the piston 250 to be transmitted to the piston 250. This structure is stable and can improve the workability of parts.

In other words, the proximal end 222 of the hinge shaft 220 is supported by the thrust bearing 211 installed on the inner bottom of the casing 210, and the front end 224 of the hinge shaft 220 protrudes from the upper surface of the casing 210. The front end 224 of the hinge shaft 220 is inserted into and fastened to one side of the lower end of the door made of tempered glass, and the door rotates about the hinge shaft 220 to rotate the hinge shaft 220.

As such, a cam 223 integrally formed with the hinge shaft is formed between the front end 224 and the proximal end 222 of the hinge shaft 220 to be rotated, and the upper plate 240a is disposed above and below the cam 223. And the lower plate 240b is installed. The upper plate 240a and the lower plate 240b have a substantially rectangular shape, and operating holes 242a and 242b are formed at one side of each of the upper plate 240a and the lower plate 240b so that the hinge shaft 220 is interposed therebetween. .

The upper plate 240a and the lower plate 240b have a plate shape and are positioned to face up and down so that the cam 223 of the hinge shaft 220 can be eccentrically rotated about the hinge shaft 220 therebetween. To form. In addition, support plates 243a and 243b are formed on both side ends of positions opposing the operation holes 242a and 242b formed in the upper and lower plates 240a and 240b, respectively.

In particular, the support plate 243a formed on the upper plate 240a is bent downward toward the support plate 243b of the lower plate 240b such that the support plates 243a and 243b of the upper plate 240a and the lower plate 240b are mutually supported. By contacting, the cam 223 of the hinge shaft 220 is provided between the upper plate 240a and the lower plate 240b so as to eccentrically rotate.

Thus, in the space provided between the upper plate 240a and the lower plate 240b, the cam 223, which is eccentrically rotated according to the rotation of the hinge shaft 220, is provided with rollers 246a provided at the upper plate 240a and the lower plate 240b. The upper plate 240a and the lower plate 240b are moved in contact with each other in contact with each other.

At this time, the tip 224 of the hinge shaft 220 is exposed to the operating hole 242a formed on the upper plate 240a, and the base end 222 of the hinge shaft 220 is the operating hole 242b formed on the lower plate 240b. By being exposed to), the upper plate 240a and the lower plate 240b are guided to the operating holes 242a and 242b according to the eccentric rotation of the cam 223, thereby linearly moving.

That is, the roller 246a which is clouded by the cam 223 so as to contact with the eccentric rotation of the cam 223 and guide the upper plate 240a and the lower plate 240b to the operation holes 242a and 242b to move in a straight line. 246b and 246c are installed between the upper plate 240a and the lower plate 240b, and the rollers 246a, 246b and 246c are pins 245a installed between the upper plate 240a and the lower plate 240b. Rollers 246a, 246b and 246c supported by the pins 245a, 245b and 245c and thus rotatably installed by the pins 245a, 245b and 245c. All.

In other words, between the upper plate 240a and the lower plate 240b, rollers 246a, 246b, and 246c rotatably installed by pins 245a, 245b, and 245c are interposed between the hinge shaft 220. Installed around the operating holes 242a and 242b, the rollers 246a, 246b and 246c are first rollers on both sides of the hinge shaft 220 interposed between the operating holes 242a and 242b. The 246a and the second roller 246b are positioned and provided, and the third roller 246c is formed at a distance perpendicular to the center between the first roller 246a and the second roller 264b.

In this way, support plates 243a and 243b are formed on the upper plate 240a and the lower plate 240b linearly moving according to the rotation of the hinge shaft 220, and the support plates 243a and 243b are the upper plate 240a. Positioned opposite to the operation holes 242a and 242b formed on one side of each of the lower plate 240b, that is, formed at opposite ends of the upper plate 240a and the lower plate 240b, the support plates 243a and 243b are Interlocking protrusions 247a and 247b are formed to prevent the elastic unit 230, which is compressed or restored in conjunction with the rotation of the hinge shaft 220, from being separated.

The engaging protrusions 247a and 247b are supported by the support bolts 213 assembled to the rear threaded holes 212 formed in the casing 210 by the elastic unit 230 described above, and the hinge shaft when the door is opened. 220 is rotated so that the cam 223 and the upper plate 240a and the lower plate 240b interlock to compress the elastic unit 230, and in this state, the elastic unit 230 compressed to restore the original unit to its original state. The hinge shaft 220 is rotated in a direction opposite to the rotation direction when opened by the door so that the door can be closed.

On the other hand, the operation hole 242a formed in the upper plate 240a is formed so that one side facing the piston 250 is open, the axis of the hinge shaft 220 due to the excessive stress on the hinge shaft 220 Problems such as tilting can be prevented.

That is, when the axis of the hinge shaft 220 is inclined unexpectedly, it occurs when the operating hole 242a having the opening exerts a certain elastic force on both sides of the hinge shaft 220 to incline the hinge shaft 220. Absorption of the stress to prevent the breakage of the hinge shaft (220).

The piston 250 is installed on the upper plate 240a and the lower plate 240b which linearly move according to the eccentric rotation of the cam 223 integrally formed with the hinge shaft 220. In particular, according to the present invention, the piston 250 may be firmly installed on the upper plate 240a and the lower plate 240b, and the processing of the piston 250 may be easier than in the related art, and thus the structure of the piston 250 may be excellent.

In other words, the piston 250, which is rotated in the cylinder 214 formed inside the casing 210 by converting the rotational movement of the hinge shaft 220 into a linear motion, has a substantially cylindrical shape, and has an upper plate 240a and a lower plate. A fixing piece 251 is formed on one side facing the 240b to be inserted between the upper plate 240a and the lower plate 240b.

That is, a fixing piece 251 is inserted into one side of the piston 250 between the upper plate 240a and the lower plate 240b, and the fixing piece fastening screw 252 is inserted into the fixing piece 251. The hole 253 is formed. In addition, each of the upper plate 240a and the lower plate 240b is provided with an upper plate fastening hole 248a and a lower plate fastening hole 248b through which the fastening screw 252 is fastened.

As such, when the fixing piece 251 is formed at one side of the piston 250 and the fixing piece fastening hole 253 is formed in the fixing piece 251, the piston is disposed between the upper plate 240a and the lower plate 240b. The fixing piece 251 formed in the 250 is inserted, and one side surface of the piston 250 is in close contact with one end of the upper plate 240a and the lower plate 240b.

In this state, the upper plate fastening hole 248a, the lower plate fastening hole 248b and the fixing piece fastening hole 253 of the upper plate 240a and the lower plate 240b and the fixing piece 251 are positioned on the same axis and are fastened to each other. The screw 252 is inserted into and fastened through the upper plate fastening hole 248a formed in the upper plate 240a, thereby fixing the piston 250 to the upper plate 240a and the lower plate 240b.

As such, the fixing piece 251 is formed on one side of the piston 250, the fastening structure in which the fixing piece 251 is inserted and fixed between the upper plate 240a and the lower plate 240b of the piston 250 Machining is easier and more accurate than before.

That is, in the related art, an insertion hole 44 having a rod 22 extending from the upper plate 20 and the lower plate 30 in the piston 40 to fix the piston 40 to the upper plate 20 and the lower plate 30. A bar having a structure inserted into the fastening screw 48 and fastened to the fastening screw 48 (see FIGS. 1 and 2). Drilled to form 46.

However, when drilling, the end of the drill slides at the outer diameter of the piston 40, so that the accurate drilling of the fastening hole 46 is difficult. That is, the fastening hole 46 should be formed so as to vertically pass through the central axis of the piston 40 after drilling, but in the actual drilling, the fastening hole 46 is shifted from the central axis of the piston 40. Will form.

As such, if the fastening hole 46 of the piston 40 is not accurately processed, the assembling of the fastening screw 48 for fastening the rod 22 and the piston 40 is difficult, as well as the rod 22 according to a long time use. The clearance between the insertion groove 44 and the insertion groove 44 is not secured so that the straightness of the piston 40 is not secured so that a part of the outer diameter of the piston 40 and the inner diameter of the cylinder formed in the casing 100 to which the piston 40 retreats are excessive. It produces a phenomenon of wear while being in close contact, which shortens product malfunction and lifespan.

However, the piston 250 fastening structure of the upper plate 240a and the lower plate 240b according to the present invention does not form a fastening hole in the outer diameter of the piston 250 but has a flat surface formed on one side of the piston 250. By forming the fastening hole 253 in the fixing piece 251, it is possible to easily and accurately perform the drilling process for forming the fastening hole 253 of the fixing piece 251.

In addition, the linear movement of the piston 250 according to the rotation of the hinge shaft 220 is uniformly transmitted to the piston 250 to stress the portion where the piston 250, the upper plate 240a and the lower plate 240b is fixed. It can be prevented from being broken by being concentrated, from which it is possible to ensure the straightness of the piston 250 advancing and retracted from the cylinder 214 formed inside the casing 210, the piston 250 outer diameter and the cylinder 214 ) It can prevent a part of the inner diameter from being worn too close.

In addition, since the fixed piece 251 is fixed to the chuck of the drilling machine when the drill is processed, it is possible to prevent the origin of the piston 250 from being crushed by the chuck of the drilling machine. It can be kept airtight between the outer diameter of the piston 250 and the inner diameter of the cylinder 214 when advancing in the cylinder 214 formed in the) to prevent the hydraulic fluid from leaking between the outer diameter of the piston 250 and the inner diameter of the cylinder 214 Can be.

On the other hand, when the door opened by the external force is rotated to close by the elastic unit dissipates the rotation force (Moment) excessively concentrated on the hinge shaft 220 to check the piston 250 so that it can be closed slowly when the door is closed 270 is installed.

In the piston 250, an oil supply port 254 is formed to allow the hydraulic oil inside the casing 210 to flow through the piston 250 and into the cylinder 214, and the oil supply port 254 is the piston 250. It is formed adjacent to the fixing piece 251 formed in.

In addition, a supply flow path 260 is formed inside the piston 250 so that the hydraulic oil inside the casing 210 may be supplied into the cylinder 214 through the oil inlet 254, and the hydraulic oil inside the casing 210. Is moved to the inside of the cylinder 214 through the supply passage 260 formed in the piston 250 through the oil inlet 254.

A check valve 270 is installed in the supply passage 260 formed in the piston 250 so that the working oil flows only in one direction. The check valve 270 installed on the supply passage 260 may include a piston 250 between a tube 271 formed with an operating section 272 having a predetermined volume and an operating section 272 of the tube 271. The opening and closing ball 273 for closing the inlet connecting the operating section 272 and the oil supply port 254 or the opening through the operating section 272 and the cylinder 214 in accordance with the advancing).

In particular, the piston 250 is provided with the check valve 270 as described above is provided with a filter net 280 for blocking foreign substances contained in the working oil in the casing 210 to be introduced into the supply flow path 260, The filter net 280 is made of a mesh having a mesh shape and is installed between the oil supply port 254 and the check valve 270.

In addition, the hydraulic oil lubricated into the cylinder 214 through the piston 250 is supplied to the cylinder 214 formed in the casing 210 where the piston 250 is advanced, and the hydraulic fluid circulates. A discharge passage 290 is formed, and a pressure adjusting bolt 291 is provided on the discharge passage 290 to adjust the volume of the discharge passage 290 through which the working oil flows.

In particular, the "V" type cutting groove 292 is formed at the proximal end of the pressure adjusting bolt (291). In other words, the pressure adjusting bolt 291 penetrates the discharge passage 290 vertically so that the base end of the pressure adjusting bolt 291 is introduced into the pipe of the discharge passage 290. When tightened, the base of the pressure regulating bolt 291 is lowered into the pipe of the discharge passage 290, and when the pressure regulating bolt 291 is released, the base of the pressure regulating bolt 291 is increased.

Thus, as the base end of the pressure adjusting bolt 291 rises and falls on the discharge passage 290, it is possible to adjust the flow rate of the working oil passing through the portion where the base end of the pressure adjusting bolt 291 is introduced.

However, as the environment changes, the volume of the hydraulic oil is expanded or decreased, so that the pressure of the hydraulic oil passing through the discharge passage 290 is increased or decreased. Therefore, in order to compensate for the pressure change, the working oil passing through the discharge passage 290 in which the pressure adjusting bolt 291 is installed is finely inside the casing through the “V” -shaped cutting groove 292 formed at the base of the pressure adjusting bolt 291. By allowing the discharge to be carried out, it is possible to prevent excessive pressure caused by the working oil inside the cylinder 214.

In addition, the cylinder 214 through which the piston 250 is advanced, a front threaded hole 215 is formed to adjust the residence space 261 in which the hydraulic oil lubricated through the piston 250 temporarily stays, and the front threaded hole ( The closing bolt 216 is fastened to 215 to increase or decrease the retention space 261 of the hydraulic fluid as the closing bolt 216 moves forward and backward.

In addition, a lid 217 is installed on an upper surface of the casing 210 in which the tip of the hinge shaft 220 protrudes, and a frictional force due to the rotation of the hinge shaft 220 is reduced below the lid 217. At the same time, a radial bearing 218 bearing the hinge shaft 220 is installed.

The operation of the floor hinge assembly according to the present invention having the configuration as described above will be described based on FIGS. 6 and 7. 6 and 7 are plan views showing the operation of the floor hinge assembly according to the present invention.

Referring to the drawings, first, the hydraulic fluid is filled inside the casing 210 is the same as a conventional floor hinge device. When the user opens the door coupled to the hinge shaft 220, the hinge shaft 210 is rotated, and accordingly the cam 223 fixed to the hinge shaft 210 pushes the third roller 246c so that the top plate 240a ) And the lower plate 240b are moved backward along the operating holes 242a and 242b.

At the same time, the piston 250 connected to the upper plate 240a and the lower plate 240b moves toward the hinge shaft 220 in the cylinder 214 and is fixed to both ends of the upper plate 240a and the lower plate 240b. The elastic unit 230 is compressed.

Subsequently, when the door is released, the upper plate 240a and the lower plate 240b are moved forward while being restored to the original state of the elastic unit by the elastic force of the elastic unit 230, and at the same time, the upper plate 240a and the lower plate 240b. A third roller 246c provided therebetween pushes the cam 60 to rotate the hinge shaft 220 in a direction opposite to the rotational direction in which the door is opened, thereby positioning the door in a closed state.

At the same time, the piston 250 connected to the upper plate 240a and the lower plate 240b moves in a direction away from the hinge shaft 220 in the cylinder 214. Here, the piston 250 compresses the hydraulic fluid filled in the casing 210 when the door is opened so that the door is opened slowly with the elastic unit 230, and when the door is closed, the hydraulic oil is compressed in the opposite direction and the door is slowly It will act to close it. In other words, the door is opened or closed smoothly and flexibly by preventing sudden operation.

On the other hand, the present invention is not limited only to the embodiments described above, but can be modified and modified within the scope not departing from the gist of the present invention, it should be seen that such modifications and variations are included in the technical idea of the present invention. do.

For example, in the foregoing description, the elastic unit 230 is installed at both side ends of the upper plate 240a and the lower plate 240b, but the elastic unit 230 is as shown in FIGS. 3 to 7. It may be a return spring having a coil wound in a spiral shape, and in some cases, the elastic unit 230 may be a cylindrical elastic member 230a as shown in FIGS. 8 and 9.

As such, the cylindrical elastic member 230a may include a hydraulic cylinder operated by hydraulic pressure, a pneumatic cylinder operated by pneumatic pressure, and a pocket spring cylinder having a coil spring installed therein.

That is, the elastic unit 230 is compressed by the linear motion of the upper plate 240a and the lower plate 240b to store the elastic force, and when the external force suppressing the elastic unit 230 is released, the upper plate 240a is restored to its original state. It will be satisfactory if it can perform the role of linearly moving the 240a and the lower plate 240b in opposite directions.

1 is a partially cut away perspective view of a conventional floor hinge assembly.

2 is a plan sectional view showing a conventional floor hinge assembly.

3 is a partially cutaway perspective view of a floor hinge assembly in accordance with the present invention.

4 is an exploded perspective view showing a floor hinge assembly according to the present invention.

5 is a side sectional view showing a floor hinge assembly according to the present invention.

6 and 7 are plan views showing the operation of the floor hinge assembly according to the present invention.

8 and 9 are some cutaway perspective and cross-sectional views showing another embodiment of a floor hinge assembly according to the present invention.

<Explanation of symbols for the main parts of the drawings>

200: floor hinge assembly

210: casing 211: thrust bearing

212: rear screw hole 213: support bolt

214: cylinder 215: front threaded hole

216: closing bolt 217: lid

218: radial bearing 220: hinge shaft

222: podium 223: cam

224: tip 230: elastic portion

240a: top plate 242a: operator

243a: support plate 245a: pin

245b: pin 245c: pin

247a: locking projection 248a: upper plate fastening hole

240b: Bottom plate 242b: Operator

243b: support plate 246a: first roller

246b: second roller 246c: third roller

247b: locking projection 248b: lower plate fastening hole

250: piston 251: stationary piece

252: fastening screw 253: fixing piece fastening hole

254: oil supply port 260: supply flow path

261: staying space 270: check valve

271 tube 272 operating section

273: opening and closing ball 280: filtering network

290: discharge passage 291: pressure adjusting bolt

292: incision groove

Claims (8)

An elastic unit interlocked by a hinge shaft is installed inside the casing buried in the floor of the building entrance. When the door is opened, the hinge shaft rotates to compress the elastic unit, and the hinge shaft is reversely rotated by the elastic restoring force of the elastic unit to close the door. A floor hinge assembly configured to An upper plate and a lower plate having cams integrally formed with the hinge shafts supported in the casing, and installed on the upper and lower portions of the cams, the rollers contacting the cams to convert the rotational movements of the hinge shafts into linear movements; A piston that is inserted between the upper plate and the lower plate at one side facing the upper plate and the lower plate, and the piston is retracted in the cylinder formed inside the casing by fastening the fixing piece and the upper plate and the lower plate, A check valve installed inside the piston and provided on a supply flow path for supplying hydraulic fluid inside the casing to the inside of the cylinder; And a pressure adjusting bolt installed on a discharge flow path formed in the casing for discharging the hydraulic oil supplied through the check valve into the casing. The method according to claim 1, The upper plate and the lower plate is positioned to face up and down in the shape of a plate, the upper and lower plates are formed with the operation hole is interposed between the hinge axis, the support plate is formed on both sides of the position opposite to the operation hole is extended to the upper plate The formed support plate is bent downward toward the support plate of the bottom plate floor hinge assembly, characterized in that the support plate of the upper plate and the lower plate is in contact with each other. The method according to claim 2, Floor hinge assembly, characterized in that the fastening hole which is located on the same axis is formed in each of the fixing pieces of the upper plate and the lower plate and the piston is inserted fastening screw. The method according to claim 2, The operating hole formed in the top plate is a floor hinge assembly, characterized in that one side facing the piston. The method according to claim 1, An oil supply port is formed on one surface of the piston in contact with the upper plate and the lower plate, and the floor hinge assembly comprising a filter net installed between the oil supply port and the check valve. The method according to claim 1, And the resilient unit is a return spring. The method according to claim 1, The elastic unit is a floor hinge assembly, characterized in that the cylindrical elastic member. The method according to claim 1, Floor hinge assembly characterized in that the incision groove is formed in the base of the pressure control valve.

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