JP3045290B2 - Hydraulic automatic buffer hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic type automatic buffer hinge excellent in durability without concentrating load on a part within a cylinder. SOLUTION: A shaft mounting portion which has the inner periphery provided with a spiral guide groove provided at the upper part of a piston 18 to be slid in a cylinder 12 and adapted to be engaged with a spiral protruded cam 41 of a shaft 40 and the outer periphery provided with a spiral guide groove adapted to be engaged with a guide protruded member 13 of a fixed pipe 14 is provided to form a vertical operation pipe 17. An oil drain port 22 is bored in the cylinder 12, a bypass flow passage 20 is provided on the opposite side and an oil reserving space 21 with an oil guide passage 21a at the upper part is provided between the cylinder 12 and an outer body 11 so that oil can flow into the shaft mounting portion via the oil drain port 22, the oil reserving space 21 and the oil guide passage 21a when the vertical operation pipe 17 is moved down with the rotation of the shaft 40 and oil pressure in the cylinder 12 is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge having a built-in hydraulic shock absorbing mechanism.

[0002]

2. Description of the Related Art Most of conventional hinges only have a function as a hinge, and a buffer function for opening and closing a door such as a gate and a function for maintaining the state when fully opened and fully closed are required. Parts such as door closures had to be installed separately from the hinges. However, this door close has a complicated structure, a high failure rate, and is required to be installed separately, which not only restricts the installation place, but also has a bad aesthetic appearance because it is exposed to the outside. There was a problem.

In order to solve these problems, the present inventor has disclosed Korean Patent No. 156093, "Hydraulically Operated Automatic Shock Absorber Hinge".
A rotating shaft that rotates with the opening and closing of doors such as gates,
A hydraulic cylinder is provided with a piston that moves up and down by engaging with the rotation of the rotating shaft, and hydraulic pressure is generated in the hydraulic cylinder by the piston that moves up and down in the hydraulic cylinder. The hinges that were configured to solve the problems of the prior art were solved.

However, such "hydraulic-actuated automatic buffer hinges"
The hydraulic load concentrates on one side of the cylinder with the rotation of the rotating shaft, and this uneven load causes cutting of the rotating shaft and breakage of the screwed bolts, etc. .

[0005]

SUMMARY OF THE INVENTION Therefore, in order to solve such a problem, an object of the present invention is to provide a hydraulic automatic shock absorbing hinge having a structure in which a hydraulic load is not concentrated on one side in a cylinder.

[0006]

In order to solve the above problems, a hydraulic automatic shock absorbing hinge according to the present invention is provided with a receiving cylinder integrally provided along an inner edge of one of a pair of connecting pieces. A bearing portion and a cylindrical bearing portion integrally provided on the inner edge of the other connecting piece are connected by a rotating shaft, and the rotating shaft is rotated integrally with the other connecting piece. A piston that engages with the cylindrical bearing portion, mounts a cylinder in the receiving cylindrical bearing portion, and arranges a piston that moves up and down in the cylinder along with the rotation of the rotation shaft. A hydraulic automatic shock-absorbing hinge having a configuration for generating hydraulic pressure therein, wherein a cylindrical receiving shaft mounting portion is connected to an upper portion of the piston, and the rotary shaft mounting portion has a receiving cylindrical inner side. A spiral ridge or a groove is provided on the opposite side of the part, A spiral guide groove portion is provided on the opposite side of the cylindrical outer side portion, and a communication passage communicating below the cylinder is formed in the bottom surface of the receiving cylinder. A spiral groove or a ridge that meshes with the spiral ridge or the groove of the rotary shaft mounting portion is formed on the opposite side of the inner side of the cylindrical bearing in the cylindrical bearing. By providing a guide protrusion that fits, the rotating shaft mounting portion is engaged with the rotating shaft and mounted in the cylindrical bearing portion, so that the rotating shaft mounting portion and the piston move up and down with rotation of the rotating shaft. In the cylinder, an oil discharge port is bored on the inner side, and a bypass flow path having upper and lower ends opened to the inside of the cylinder is provided on the opposite side of the oil discharge port. Provide an oil storage space between the part and the outer side of the cylinder, An oil guide passage is provided above the oil storage space, and when the oil pressure in the cylinder increases due to the lowering of the piston, the oil in the cylinder flows into the rotating shaft mounting part via the oil discharge port, the oil storage space, and the oil guide passage. to make it in, further
In the vicinity of the upper end in the cylindrical bearing portion, a locking groove is provided on the upper surface.
Is fixedly disposed on the support tube, and
A through hole is drilled at a position corresponding to the retaining groove,
Connection ring engaged with a rotating shaft so as to rotate
Is mounted rotatably, and a locking pin is inserted into the through hole.
At the same time, press the base end of this
The tip of the locking pin can be engaged with the locking groove, and the hinge
The tip of the latch pin slides on the support plate,
This state can be maintained when the end and the engaging groove engage.
Is configured.

[0007] Also, when one of the connecting pieces is integrally provided.
At the bottom of the bottom surface of the cylindrical bearing,
A protruding portion is provided so that the protruding portion rotates
The spring member is rotated with the rotation of the projection portion.
Is connected by a spring member so that it is rolled and rewound,
Automatically closes by the elasticity of this spring member
It is preferable to configure an "automatic closing mechanism".

More preferably, the spring member is placed on a rotating disk, and the spring member is pressed by a lid to make the spring member in a compressed state, and the base end of the locking pin is pressed by a spring member. The bracket is detachably engaged with the rotating shaft protruding from the bracket, and the bracket has a spring member mounted in a compressed state at an intermediate portion, and a locking piece that melts at a predetermined temperature or more at a base end portion. The bracket is locked to one of the connecting pieces in a state of being stuck and elastically urged, and when the locking piece is melted by a fire, the engagement between the bracket and the rotating shaft is released, and the spring member is released, and the hook is locked. It is preferable that the engagement between the pin tip and the engaging groove is released, and the pin is automatically closed by the automatic closing mechanism.

A lower opening of the bypass passage is provided at a lowermost position of the piston on the inner side of the cylinder, and a lower opening is provided above the lower opening and below an upper opening of the bypass passage. It is preferable that the oil outlet is provided, and the upper opening of the oil outlet and the bypass passage is elastically sealed by a needle valve with a spring.

[0010] It is also preferable that a magnet is mounted in the cylindrical bearing to collect iron powder generated during operation.

[0011] The rotary shaft engaging portion may be formed separately from the piston. For example, a connecting pipe is erected on the upper surface of the piston, and this connecting pipe is inserted into the communication passage of the rotating shaft engaging section, and a nut is fixed in a receiving cylinder of the rotating shaft engaging section, and the connecting pipe is connected to the rotating shaft engaging section. Also, the piston and the piston may be connected to each other, or a fitting hole may be provided instead of forming a communication passage on the cylindrical bottom surface of the rotary shaft engaging portion, and the piston upper surface may have a communication passage. It is also possible to provide a configuration in which a fitting head is provided, the fitting head is fitted in the fitting hole, and the rotary shaft engaging portion and the piston are connected to each other.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a hydraulic automatic shock absorbing hinge according to the present invention will be described.

The hydraulic automatic shock absorbing hinge shown in FIG. 1 has an outer shell 11 as a cylindrical bearing portion provided integrally with an inner end surface of a connecting piece 10 and an other outer connecting body. The "cap 60" as a cylindrical bearing unit provided integrally with the upper end of the inner end surface of the "piece 10a"
It is connected rotatably through "0".

As shown in FIG. 1, the "outer body 11" has a needle valve 32 at one side of a cylindrical portion near the lower end of the outer periphery.
A cylindrical projection 11a having a space for accommodating
A cylindrical protrusion 11b having a space for accommodating the needle valve 32a protrudes slightly above the cylindrical protrusion 11a on the opposite side, and the lower end of the cylinder is sealed with an oil leakage prevention lid 33. As a whole, it has a cylindrical shape, and the side surface of the cylindrical shape is fixed to the inner end surface of the connecting piece 10.

Inside the outer body 11, a “cylinder 12” and a “fixed pipe 14” are fixedly disposed in order on an oil leakage prevention lid 33, and the cylinder 12 and the fixed pipe 1 are arranged in this order.
A vertical operating pipe 17 is disposed inside the fixed pipe 14 so as to be vertically slidable, and a blocking wheel 41 provided at an intermediate portion of the rotating shaft 40 is rotatably mounted on the fixed pipe 14. The lower portion of the rotating shaft 40 is inserted into the fixed tube 14 and is engaged with the vertical operating tube 17. On the other hand, the blocking wheel 41 of the rotating shaft 40
A “support tube 51” for preventing the rotation shaft 40 from being detached is fixedly disposed on the top, and a “connection ring 65” that transmits the rotation of the connection piece 10 a to the rotation shaft 40 is rotatably mounted on the support tube 51. Between the connecting ring 65 and the lid 62a that closes the upper end of the outer body 11, a "coil spring 61"
"a" is interposed in a compressed state.

Here, first, the "oil leakage prevention lid 33"
As shown in FIG. 1, a column-shaped protrusion that can be fitted into the cylinder 12 is protruded from the upper surface of the cover, a recess 33 a is provided inside the protrusion, and a coil retaining hole 33 c is provided on the lower surface of the cover. The oil leakage prevention cover 33 is provided with an O-ring 35 interposed therebetween so as to prevent oil leakage.
Screwed into the lower opening. A permanent magnet 33b is inserted and installed in the recessed portion 33a, and iron powder mixed into the oil during operation is collected by the permanent magnet 33b so as to remove impurities and maintain the vertical flow of the oil smoothly.

A coil spring 61 is mounted on the lower surface of the oil leakage prevention lid 33, and is connected to a lid 62 disposed below the oil leakage prevention lid 33 and rotating integrally with the connecting piece 10a. I have. That is, a cap 60a is provided integrally with the lower end of the inner end surface of the connecting piece 10a,
A lid 62 is fixedly provided in the lower opening, and
A coil locking hole 62a is provided on the inner bottom surface of the coil spring 2 and the lower end of the coil spring 61 is locked in the coil locking hole 62a. The coil spring 61 is mounted so as to be locked in the coil hooking hole 33c so as to rewind and rewind as the connecting piece 10a is opened and closed. The hinges are automatically closed from.

The "cylinder 12" is fixedly disposed on the oil leakage prevention cover 33. This "cylinder 12"
As shown in FIG. 1, the cylinder has a cylindrical shape, and the lower opening of the cylinder is closed by a columnar projection of the oil leakage prevention lid 33. Also, on one side near the lower end, an "U-shaped bypass flow path 20" having upper and lower ends opened to the inside of the cylinder is formed, and on the side opposite to this, an "oil discharge port 22" is formed. The cylindrical upper end edge protrudes outward to form a protruding edge, and an oil guide passage 21a is bored on the same side of the protruding edge as the oil discharge port 22.

Here, the "U-shaped bypass flow path 20"
The lower opening 20b is provided at the lowermost position of the piston 18, which will be described later, on the inner side of the cylinder.
0a is provided at a position where the piston 18 is opened above the piston 18 when the piston 18 reaches the lowermost position.
2 "is provided slightly above the lower opening 20b but below the upper opening 20a. The upper opening 20a and the oil discharge port 22 are elastically moved by the needle valve 32a or 32. Is sealed.
These needle valves 32, 32a have their valve base ends together with coil springs 31, 31a in adjustment bolts 30, 30a housed in the cylindrical projections 11a, 11b so as to be position-adjustable. The distal end portion penetrates through the end surfaces of the adjustment bolts 30 and 30a, the peripheral side portion of the outer body portion 11, and the peripheral surface of the cylinder 12, and is pressed by the coil springs 31 and 31a to form a U-shaped bypass flow passage 20. The upper opening or the oil discharge port 22 is elastically sealed.

The cylinder 12 is sandwiched and fixed between an oil leakage prevention lid 33 and a step provided on the inner wall of the outer body 11, and an oil storage space 21 is provided between the cylinder 12 and the outer body 11. This oil storage space 2 is formed
1 is a cylinder 1 via the oil guide passage 21a.
2, a space between the cylinder 12 and the fixed tube 14, a space between the fixed tube 14 and the outer body 11 communicating therewith, and a space between the fixed tube 14 and the upper and lower operating tube 17 which are also connected. Is connected to the gap.

On the cylinder 12, a "fixed tube 14" is fixedly mounted so as to be screwed to the inner wall surface of the outer body 11. As shown in FIG. 2, the “fixed tube 14” has a guide projecting piece 13 projecting inward and upward from opposite sides of a lower end edge of a cylindrical inner peripheral surface so as to be elastically openable and closable. 1
3 is formed.

The cylinder 12 and the fixed tube 1
The "up / down operation pipe 17" is disposed inside 4 so as to be slidable up and down. As shown in FIGS. 1 and 2, the “upper / lower operation pipe 17” has a “piston 18” continuously provided below the rotary shaft mounting portion 17 a having a cylindrical shape. Left rotating spiral guide grooves 15, 15 are formed on both left and right sides of the outer peripheral surface of 17a, and right rotating spiral guide grooves 16, 16 are formed on both left and right sides of the inner peripheral surface of the rotating shaft mounting portion 17a. An oil passage 19 communicating with the lower portion of the cylinder 12 is formed in the center of the cylindrical bottom portion. Also,
The “piston 18” has an outer peripheral surface that slides along the inner peripheral surface of the cylinder 12, and a space having an open lower end is provided inside the piston 18, and a spring is provided in this space. The check valve 34 is housed. The inside of the piston 18 and the inside of the rotary shaft mounting portion 17a are
The oil passage 19 is partitioned by a bottom surface portion a and communicates with an oil passage 19. The oil passage 19 is elastically sealed by the check valve 34.

Although the cylinder 12 can be formed integrally with the rotary shaft mounting portion 17a as shown in FIG. 1, the cylinder 12 can be formed as shown in FIGS.
It may be separate from a and connected and fixed to the rotating shaft mounting portion 17a. That is, as shown in FIG. 5, a connection hole is formed in the bottom surface of the rotating shaft mounting portion 17a, while the cylinder 18 has a communication tube 18a erected on the upper surface and a storage portion having a lower end opened in a cylindrical interior. 6, a check valve 34 provided with a spring is provided in the storage portion, and the communication pipe 18a is screwed into the communication hole and fixed by a nut 18b to be connected. As shown in FIG.
A fitting hole is provided on the bottom surface of the cylinder 7a, and the cylinder 12 is
A storage portion having a head 18b having an oil passage 19 formed therein and capable of being fitted into the fitting hole, and having a lower end opened inside the columnar shape, on a cylindrical upper surface formed separately from the rotating shaft mounting portion 17a. It is also possible to provide a check valve 34 provided with a spring in this storage portion, and to connect the head 18b by fitting the head 18b into the fitting hole.

Next, as shown in FIG. 2, the “rotation shaft 40” forms a disc-shaped blocking wheel 42 having a size along the inner peripheral surface of the outer body 11 in the middle portion of the shaft portion. The lower part is formed on the left and right sides of the shaft peripheral surface on the right and left helical guide grooves 16 and 16 with a right-rotation helical ridge that meshes with the right-rotation helical guide groove 16 to form a helical projection cam 41. A concave and convex band portion 64 formed by alternately providing concave and convex portions having an appropriate width in the vertical direction on the shaft peripheral surface is formed, and an engagement groove 75 is formed along the shaft peripheral surface near the upper end portion. It is provided.

The rotary shaft 40 has its blocking wheel 42 rotatably mounted on the fixed tube 14 and engages the uneven band 64 with the "connecting ring 65" to rotate with the rotation of the connecting piece 10a. The helical projection cam 41 is inserted into the fixed tube 14. Then, the rotary shaft mounting portion 17a of the upper and lower operation tube 17 is engaged and mounted on the spiral type projecting cam 41,
The vertical operation pipe 17 moves up and down with the rotation of.

Here, as shown in FIGS. 1 and 3, the "connecting ring 65" is formed with an uneven portion 64a which meshes with the uneven band portion 64 of the rotary shaft 40 on the inner periphery of the ring, and is formed on the outer periphery of the ring. An uneven portion 63a is formed, and through holes 66a, 66a are formed on both left and right sides of the upper surface of the annular ring. As shown in FIG.
5 is engaged and inserted into the cap 60 in which the concave and convex portions 63 meshing with the concave and convex portions 63a are formed, placed on the “support tube 51”, and slidably rotates on the support tube 51 integrally with the cap 60. It is arranged as follows. The rotating shaft 40 is inserted into the connecting ring 65 so that the uneven band portion 64 and the uneven portion 64a mesh with each other.
, And rotates integrally with the cap 60 and the connecting piece 10a.

In addition, engaging grooves 51c, 51c are formed at positions corresponding to the through holes 66a, 66a of the connecting ring 65 on the upper surface of the tubular shape of the "support tube 51". As shown in FIG. 9, a locking pin 66 is inserted into each through hole 66a, and the pin head is moved to the "coil spring 61".
a "so that the tip of the pin slightly protrudes from the lower surface of the support tube 51 so as to mutually engage with the locking grooves 51c, 51c. In the opening and closing process, as shown in FIG. While the pin tip of 66 slides on the upper surface of the support tube 51, the pin tip engages with the locking groove 51c in the fully opened state and the completely closed state, so that the fully opened state and the completely It is configured to maintain a closed state. In addition, as shown in FIG. 1, the “support tube 51” has a concave / convex portion 50a formed along the outer peripheral surface of the tubular shape, and a concave groove 51a extending in the horizontal direction along the outer peripheral surface of the tubular shape. The concave and convex portion 50a is engaged with the concave and convex portion 50 provided on the inner peripheral surface of the outer body 11 as shown in FIG. 4, and the concave portion is formed through a horizontal hole provided on the peripheral surface of the outer body 11. It is fixed to the outer body 11 by interposing a vertical detachment prevention snap ring 51b in the entrance groove 51a.

A coil spring 61a is mounted on the connection ring 65 above the connection ring 65, and the cap 6 is compressed so as to compress the coil spring 61a.
The cover 62a is put on the upper opening of the cover 62a, and a bracket 73 is engaged with an engaging groove 75 that penetrates the cover 62a and protrudes onto the cover 62a. The bracket 73 locks and holds the cover 62a. I have.

The rear end of the bracket 73 is passed through a cylinder 70 provided at the upper edge of the connecting piece 10, and the bracket 73 is inserted into the cylinder 70.
A coil spring 72 is mounted on the shaft portion of the spring, and a pressing piece 71 is pressed so as to press the coil spring 72 in a compressed state.
A locking plate 74 made of molten lead is further fixed to the rear end of the bracket 73, and the locking plate 74 is fixedly mounted on the rear end surface of the cylinder 70, and is engaged in a state of being elastically urged. It has stopped. When the temperature rises to a certain temperature due to a fire, the locking plate 74 made of molten lead is melted, and the bracket 73 retreats rearward due to the elastic force of the coil spring 72, and the bracket 73 is disengaged from the engagement groove 75 of the rotating shaft 11. As a result, the lid 62a is disengaged upward by the resilient force of the coil spring 61a, the coil spring 61a is released, the pressing force against the locking pin 66 is eliminated, and the locking pin 66 and the locking groove 51c are connected. The engagement is released, and the coil spring 61 is closed by the elastic force.

If the hydraulic automatic shock absorbing hinge having the above-described configuration is installed at, for example, a gate, the connecting piece 10a is opened as the gate is opened, and the connecting ring 65 and the rotating shaft 40 are rotated accordingly. At this time, the spiral projecting cam 41 and the right spiral guide groove 1
The upper and lower working pipes 17 are raised by the engagement with 6, and at the same time, the piston 18 is also raised in the cylinder 12. With this rise, the hydraulic pressure in the rotary shaft mounting portion 17a of the vertical operating pipe 17 rises, and when this hydraulic pressure exceeds the resilience of a spring that presses the check valve 34, the valve opens and the rotary shaft mounting portion 17a The oil inside flows into the cylinder 12 via the oil passage 19, and a buffer effect can be obtained by the flow of the oil at this time. Further, the lid 62 rotates as the connecting piece 10a is opened, and the coil spring 61 is in a rolled-down state. However, as shown in FIG. Is the retaining groove 51c
And the fully open state is maintained.

On the other hand, when closing the gate, the above-mentioned locking pin 6
If a force enough to disengage the engaging groove 6 from the engaging groove 51c is applied, the coil spring 61 is automatically closed by rewinding by the elastic force of the coil spring 61. Moreover, at this time, the connecting piece 1
With the rotation of 0, the rotating shaft 40 rotates in the direction opposite to that at the time of opening, and the rotating shaft mounting portion 17a of the vertical operating pipe 17 is fixed by the engagement between the spiral projecting cam 41 and the right spiral guide groove 16. The piston 18 descends in the tube 12 and the piston 18 descends in the cylinder 12. When the piston 18 descends, the cylinder 1
When the oil pressure in the cylinder 2 rises and this oil pressure exceeds the resilience of the coil spring 31 that holds down the needle valve 32, the needle valve 32 opens, and the oil in the cylinder 12 flows through the discharge port 22 and the oil storage space 21. Inside, further, the oil flows to the upper part of the piston 18 through the oil guide passage 21a, and also flows to the upper part of the piston 18 through the U-shaped bypass flow path 20. At this time, the flow of oil exerts a buffering effect, and the gate is slowly closed. And proceed.

When the gate is further closed and the upper opening 20a and the discharge port 22 of the U-shaped bypass flow path 20 are both closed by the piston 18 as shown in FIG. 7, the oil storage space 21 as described above is closed. Since the oil flow path passing through is shut off, the lowering of the piston 18 stops instantaneously and the closing of the gate stops. However, even in this stopped state, the coil spring 6
Since a force acts on the piston 18 in the descending direction by the radial elastic force of 1, the hydraulic pressure in the cylinder 12 increases,
The oil in the cylinder passes through the space between the lower opening 20b of the U-shaped bypass passage 20 and the upper opening 20a and the needle valve 32a, and the piston 18 and the rotary shaft mounting portion 17a.
And the stopped closing operation is restarted. In the gate closing operation at this time, since the buffer effect greater than the buffer effect before the stop is applied, the gate closes more gradually. Then, as shown in FIG. 8, when the lower end surface of the piston 18 abuts against the upper end surface of the oil leakage prevention lid 33, the piston 18 is fully closed.
Is engaged with the retaining groove 51c to maintain the completely closed state.

Since the vertical operating pipe 17 repeats ascending and descending with the rotation of the rotating shaft 40 with the opening and closing of the gate, the parts in contact with the oil receive the load due to the fluctuation of the hydraulic pressure. If any, the spiral projecting cam 41 formed on the rotating shaft 40, the guide projecting piece 13 formed on the fixed tube 14, and the spiral guide grooves 15 and 16 formed on the vertical operating tube 17 are all symmetrical. The U-shaped bypass flow path 20 is also formed at a position symmetrical to the oil discharge port 22, so that the load due to the hydraulic pressure fluctuation is offset, the eccentric load is reduced, and the hydraulic pressure load as described above causes The parts in contact with the oil can be prevented from being damaged, and the durability of the hinge can be improved.

Further, if the hydraulic automatic shock absorbing hinge having the above configuration is installed on the gate or the door, if a fire occurs when the gate or the door is open, the locking plate 74 made of molten lead is melted and the coil spring is opened. The bracket 73 is disengaged from the engagement groove 75 of the rotating shaft 11 by the repulsive force of the
Is released, the engagement between the locking pin 66 and the locking groove 51c is released,
It is automatically closed by the resilience of the coil spring 61. Accordingly, it is possible to provide a door or a gate that exhibits an automatic gate closing function in the event of a fire, and it is possible to minimize human and property damage caused by the fire.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing an example of a hydraulic automatic shock absorbing hinge of the present invention.

FIG. 2 is an exploded perspective view of the internal structure of the hydraulic automatic shock absorbing hinge of FIG.

FIG. 3 is a cross-sectional view of the hydraulic automatic shock absorbing hinge of FIG. 1 taken along the line II.

FIG. 4 is a sectional view taken along the line II-II of the hydraulic automatic shock absorbing hinge of FIG. 1;

FIG. 5 is a cross-sectional view illustrating a main part of a modification of the upper and lower working tubes of FIG. 1;

FIG. 6 is a cross-sectional view of a principal part of a modification of the upper and lower working tubes of FIG.

FIG. 7 is a cross-sectional view of a main part showing an operation of the hydraulic automatic shock absorbing hinge of FIG. 1;

8 is a cross-sectional view of a principal part showing the operation of the hydraulic automatic shock absorbing hinge of FIG.

FIG. 9 is a sectional view of the essential part showing the operation of the upper end of the hydraulic automatic shock absorbing hinge of FIG. 1;

[Explanation of symbols]

10, 10a Connecting piece 11 Outer body 12, 70 Cylinder 13 Guide projecting piece 14 Fixed pipe 15 Left rotating spiral type guide groove 16 Right rotating spiral type guide groove 17 Vertical operating pipe 17a Rotating shaft mounting part 18 Piston 18a Connecting pipe 19 Oil passage 20 U-shaped bypass flow passage 21 Oil storage space 22 Oil outlet 30, 30a Adjustment bolt 31, 31a, 61, 61a, 72 Coil spring 32, 32a Needle valve 33 Oil leakage prevention lid 33a Recessed part 33b Permanent magnet 34 Reverse Stop valve 35 O-ring 40 Rotating shaft 41 Helical projecting cam 42 Blocking wheel 42a O-ring 50, 50a, 63, 63a, 64a Concavo-convex part 51 Support tube 51a Recessed groove 51b Snap ring 51c Lock groove 60, 60a Cap 62, 62a Lid 64 Irregular band 65 Connecting ring 66 Locking pin 71 Pressing piece 73 Bracket 74 Locking plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05F 3/00-3/20 A62C 2/24 E05D 7/086

Claims (7)

(57) [Claims] 1. A bearing portion having a cylindrical shape integrally provided along an inner edge of one of a pair of connecting pieces, and a cylindrical shape integrally formed on an inner edge of the other connecting piece. And a rotary shaft, and the rotary shaft is engaged with the cylindrical bearing so as to rotate integrally with the other connecting piece, and a cylinder is mounted in the cylindrical bearing. A hydraulic automatic shock absorbing hinge having a configuration in which a piston that moves up and down in accordance with the rotation of the rotary shaft is provided in the cylinder and a hydraulic pressure is generated in the cylinder by the up and down movement of the piston. The upper part is connected to a cylindrical rotary shaft mounting part, and the rotary shaft mounting part is provided with a spiral ridge or a groove on the opposite side of the cylindrical inner side part, respectively, and the cylindrical cylindrical outer part is formed. A spiral guide groove is provided on the opposite side of the side, and on the bottom of the receiving cylinder While forming a communication passage communicating below the cylinder, a spiral groove or a protrusion meshing with the spiral protrusion or the groove of the rotation shaft mounting portion is formed on the shaft peripheral surface of the rotation shaft. In the cylindrical bearing portion, guide protrusions are provided on opposite sides of the inner side portion thereof so as to engage with the spiral guide grooves of the rotating shaft mounting portion, and the rotating shaft mounting portion is engaged and mounted on the rotating shaft to receive the cylinder. By disposing in the cylindrical bearing portion, the rotating shaft mounting portion and the piston move up and down with the rotation of the rotating shaft, and an oil discharge port is bored on the inner side of the cylinder. On the opposite side, a bypass flow path with upper and lower ends opened inside the cylinder is provided, and an oil storage space is provided between the inner side of the cylindrical bearing portion and the outer side of the cylinder. An oil guide passage is provided in When the hydraulic pressure in the cylinder increases, the oil in the cylinder oil outlet, and flows into the axle mount portion through the oil storage space and oil guide passage, further to the vicinity of the upper end portion in the receiving cylindrical shaped bearing section Hangs on the top
A support tube with a stop groove is fixedly arranged, and on this support tube
A through hole is formed at a position corresponding to the engaging groove,
A connection engaged with a rotating shaft so as to rotate as a body
Place the ring so that it can rotate, and insert the retaining pin into the through hole.
And press the base end of this latch pin with a spring member.
To make the tip of the latch pin engageable with the latch groove.
During the opening and closing process, the tip of the latch pin slides on the support plate and latches
This state can be maintained when the pin tip and the engaging groove engage.
Hydraulic automatic buffering hinge having a configuration formed by a so that. 2. The receiving member integrally provided on one connecting piece.
The lower part of the bottom surface of the cylindrical bearing is turned integrally with the other connecting piece.
A projecting portion is provided so as to rotate, and this projecting portion and the receiving cylindrical shaft
A spring member is wound around the bottom surface of the receiving portion with the rotation of the projecting portion.
Connected by a spring member so as to draw and rewind,
It is configured to close automatically by the elasticity of the spring member.
The hydraulic automatic shock absorbing hinge according to claim 1, wherein 3. The spring member according to claim 1, which is mounted on a turntable.
Place it and press it with the lid to compress the spring member
The base end of the locking pin is pressed by a spring member, and the lid projects on the lid.
With the bracket detachably engaged with the rotating shaft
This bracket locks the spring member in the middle
When the temperature rises above a certain level at the base end
Attach the melting piece and fix it
One of the connecting pieces is locked, and the fire causes the locking piece to melt.
When melted, the engagement between the bracket and the rotating shaft is released and the spring member
Is released, the engagement between the tip of the latch pin and the latch groove is released,
Automatic closing by the automatic closing mechanism according to claim 2.
The hydraulic automatic shock-absorbing butterfly according to claim 2, wherein the butterfly is configured to:
Number. 4. A piston at the inner side of the cylinder.
The lowermost part of the bypass passage is provided at the lowermost position,
Above this lower opening and above the bypass flow path
The above-mentioned oil discharge port is provided below the opening,
The upper opening of the oil outlet and the bypass flow path has a spring
4. The method according to claim 1, which is elastically sealed with a needle valve.
The hydraulic automatic buffer hinge according to any of the above. 5. A magnet is mounted in said cylindrical bearing portion, and
It is characterized by collecting iron powder generated during movement
A hydraulic automatic shock-absorbing butterfly according to any one of claims 1 to 4.
Number. 6. The rotary shaft engaging portion is formed separately from the piston.
A connecting pipe is erected on the top of the piston, and this connecting pipe is
Inserted into the communication passage of the rotating shaft engaging portion and inside the receiving cylinder of the rotating shaft engaging portion
And fix the nut to connect the rotating shaft engaging part and the piston.
6. The method according to claim 1, which has a configuration formed by setting.
Hydraulic automatic buffer hinge. 7. A rotary shaft engaging portion is formed separately from a piston.
Instead of forming a communication passage in the cylindrical bottom surface of the rotary shaft engaging portion,
The fitting hole is provided in the piston, and the piston upper surface has a communication passage.
And a fitting head is fitted into the fitting hole.
To connect the rotating shaft engaging part and the piston
A hydraulic automatic shock-absorbing butterfly according to any one of claims 1 to 5.
Number.