JP2003343151A - Floor hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor hinge in which there is no concern for a damage even when suddenly receiving a large force in the case of the opening of a door. <P>SOLUTION: A rotating shaft 3 rotated by the rotation of the door by a connection with the lower end of the door is installed on one end side of a casing 2, and a heart-shaped cam 4 turned with the rotation of the rotating shaft 3 is mounted while a guide plate 6 with a roller 5, against which the cam 4 is abutted, is secured and the cam 4 is abutted against the guide plate 6. A rod 7 is connected so as to be interlocked with the guide plate 6 to the guide plate 6. A compression spring 9 having a small spring constant and the compression spring 8 having the large spring constant compressed by the movement of the rod 7 and self-closing the door are divided into the longitudinal direction of the rod 7 and both compression springs are fitted externally in series while an end-section bracket 16, a spacer 14 and a sleeve 17 are set up to the rod 7 for controlling the quantity of the compression spring 9 having the small spring constant compressed, and a floor hinge is not damaged even when suddenly receiving a large force when the door is opened by the installation of the bracket, spacer and sleeve. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor hinge for supporting a lower end of a door.

[0002]

2. Description of the Related Art Conventionally, as a floor hinge for supporting a lower end of a door, for example, as shown in FIG. 10, a rotation which is connected to a lower end of a door at one longitudinal end of a casing 102 and is rotated by rotation of the door. A shaft 105 is provided, and a rod 105 having a compression spring 104 having a predetermined spring constant mounted on the other end side in the longitudinal direction of the casing 102 is provided so as to reciprocate along the longitudinal direction of the casing 102. A heart-shaped cam 106 that rotates coaxially with the heart-shaped cam 106 is provided coaxially, and a guide plate 108 provided with a roller 107 on which the heart-shaped cam 106 abuts is attached to a rod 105.
, The compression spring 104 is compressed when the door is rotated in the opening direction, and the door is closed by the spring force of the compression spring 104 when the door is rotated in the closing direction.

[0003]

However, in the above-mentioned floor hinge, since the spring force of the compression spring 104 is constant when the door is rotated in the direction of opening the door, a large wind gust is generated when the door is opened. When the force is suddenly applied, the impact may open the door beyond a preset maximum opening angle, which may damage the floor hinge, for example, the rod 105 or the like may be deformed.

Therefore, the present invention is intended to solve the above-mentioned problems, and an object thereof is to provide a floor hinge which is not likely to be damaged even when a large force is suddenly applied when the door is opened.

[0005]

In order to solve the above-mentioned problems, the floor hinge of the present invention is provided with a rotating shaft, which is connected to the lower end of the door and is rotated by the rotation of the door, at one longitudinal end of the casing. At the other end of the casing in the longitudinal direction, a rod is provided so as to be movable in the longitudinal direction of the casing, and a compression spring that is compressed by the movement of the rod and closes the door is externally fitted to the rod. The shaft and the rod are connected via a power transmission member that converts the rotation of the rotation shaft into a linear motion, and when the door rotates in the opening direction, the rod works in conjunction with the power transmission member and one longitudinal end in the casing. Side to compress the compression spring, and when the door rotates in the closing direction, the rod moves to the other end side in the longitudinal direction inside the casing to automatically close the door by the spring force of the compression spring. In the floor hinge configured as described above, a compression spring having a small spring constant and a compression spring having a large spring constant are divided into the rod in the length direction of the rod, and both compression springs are externally fitted in series. In addition, a compression amount regulating member for regulating the compression amount of the compression spring having a small spring constant is provided.

According to the above construction, a compression spring having a small spring constant and a compression spring having a large spring constant are divided into the rod in the length direction of the rod, and both compression springs are externally fitted in series. Since the compression amount regulating member for regulating the compression amount of the compression spring with a small constant is provided, when the door is rotated in the opening direction, the compression spring with a small spring constant mainly compresses until the door rotates a predetermined angle. After the door rotates by a predetermined angle and the compression spring with a small spring constant reaches the regulated compression amount, the compression spring with a large spring constant is compressed. It takes a lot of power to open it. Therefore, even if a large force is suddenly applied when opening the door, the force suddenly applied by the compression spring with a large spring constant is relaxed after the door is opened by a predetermined angle. The floor hinge will not be opened beyond the set maximum opening angle, and the floor hinge will not be damaged due to deformation of the rod or the like.

According to a second aspect of the present invention, in the above structure, the compression amount regulating member includes an end receiving member for receiving one end of the compression spring having a small spring constant, and a compression spring having a small spring constant. A spacer arranged between the compression spring having a large spring constant and receiving the other end of the compression spring having a small spring constant, and the end receiving bracket and the spacer when the door is opened by a predetermined angle. Are directly or indirectly abutted to regulate the compression amount of the compression spring having a small spring constant.

According to the above construction, since the compression amount of the compression spring having a small spring constant until the door is opened by the predetermined angle can be reliably regulated, only the compression spring having a large spring constant is compressed thereafter. It can be set accurately.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, floor hinges according to embodiments of the present invention will be described in detail with reference to the drawings.

1 to 5 show a floor hinge for a so-called free opening door which can be opened and closed on both inside and outside of a passage. FIG. 1 is a partially cutaway perspective view of the floor hinge, and FIG. B line sectional view, FIG. 3 is the AA line sectional view of FIG. 1, and FIG. 4 is C of FIG.
-C line sectional drawing, FIG. 5 is the DD sectional view taken on the line of FIG.

As shown in FIGS. 1 to 5, the floor hinge 1 includes a casing 2, a rotary shaft 3 which is connected to the lower end of the door and rotates by the rotation of the door, and the rotary shaft 3 rotates. Guide plate 6 including a heart-shaped cam 4 that rotates in a rotating manner and a pair of rollers 5 and 5 with which the heart-shaped cam 4 abuts.
The main components are a rod 7 connected to the guide plate 6, a compression spring 8 fitted on the rod 7 and having a large spring constant, and a compression spring 9 having a small spring constant.

The rotating shaft 3 is provided on one end side in the longitudinal direction of the casing 2, and the rotating shaft 3 projects upward from the upper lid 10 of the casing 2 for connecting with a door.
The heart-shaped cam 4 that rotates with the rotation of the rotating shaft 3 is provided on the same axis as the rotating shaft 3. Further, a pair of guide plates 6, 6 connected to each other by connecting pins 11 are provided above and below the heart-shaped cam 4 so as to sandwich the heart-shaped cam 4. Between the pair of guide plates 6, 6, the pair of rollers 5, on one end side thereof,
5 is provided, and the heart-shaped cam 4 is provided on the rollers 5 and 5.
The outer peripheral part of is in contact. And the guide plates 6, 6
Slots 6a, 6a are formed in the shaft 6, and the rotary shaft 3 is inserted into the slots 6a, 6a.

As a result, the guide plates 6, 6 are formed into the long holes 6
It is configured to move in the longitudinal direction of the casing 2 by being restricted by a and 6a. That is, when the door rotates in the opening direction, the guide plates 6, 6 move to one longitudinal end in the casing 2, and when the door rotates in the closing direction, the guide plates 6, 6 move in the longitudinal direction in the casing 2. It is designed to move to the other end.

The plate-shaped rod 7 is provided at the other end of the casing 2 so that the rod 7 moves in the casing 2 in conjunction with the guide plates 6, 6. , One end side of the rod 7 is the connecting pins 12, 12
Is connected to the guide plates 6, 6.

A compression spring 8 having a large spring constant is fitted to one end of the rod 7 at a predetermined length a, and a compression spring 9 having a small spring constant in series with the compression spring 8 is connected to the other end of the rod 7. It is fitted with a predetermined length b. One end of the compression spring 8 is received by an end receiving fitting 13 fixed inside the casing 2, and the other end of the compression spring 8 is a compression spring 8 and a compression spring 9.
Is received by a spacer 14 having a flange portion externally fitted to the rod 7.

One end of the compression spring 9 is received by the spacer 14 and the other end thereof is received by an end receiving member 16 having a flange portion connected to the rod 7 by a connecting pin 15. Further, a sleeve 17 is externally fitted to the rod 7 between the spacer 14 and the end receiving fitting 16, and the spacer 14, the sleeve 17 and the end receiving fitting 16 are provided when the door is opened by a predetermined angle. Are brought into contact with each other to regulate the compression amount (compression length) of the compression spring 9. That is, the spacer 14 and the end receiving metal fitting 16 indirectly contact with each other via the sleeve 17 to regulate the compression amount of the compression spring 9.

As a result, when the door is rotated in the opening direction, the compression springs 8 and 9 are compressed, and when the door is rotated in the closing direction, the spring force of the compression springs 8 and 9 causes the door to close itself. ing.

A piston 18 for hydraulic control is connected to the other end of the rod 7 by a connecting pin 19. The piston 18 is provided so as to slide in a cylinder chamber 20 formed on the other end side of the casing 2, and the piston 18 is provided with a ball valve 21 for one-way valve 2
Two are provided. Then, when the door rotates in the opening direction, the piston 18 moves to one end side of the casing 2,
The hydraulic oil is configured to flow to the other end side (cylinder chamber 20 side) of the casing 2 through the one-way valve 22. Then, when the door is rotated in the closing direction, a flow path 23 is formed in the side wall of the cylinder chamber 20 for flowing the working oil flowed to the other end side of the casing 2 to the one end side of the casing 2 and the cylinder chamber 20. And the flow path 23 are communicated with each other through communication holes 24, 24, and adjustment valves 25, 25 for adjusting the flow rate of the hydraulic oil are provided in the respective communication holes 24.

As a result, the self-closing speed of the door is hydraulically controlled in two steps. The floor hinge 1 is embedded in the floor Y of the passage as shown in FIG.
The lower end of the central portion of the door D in the thickness direction is supported by the rotating shaft 3 and the upper end is supported by the upper frame F1 by a normal center hanging hinge H, and the door D is provided on both sides of the vertical frame F2 provided in the passage. It is attached to open and close, and as shown in FIG. 9, door D
Is set so that the maximum opening angle is, for example, about 110 ° in the directions A and B on both sides of the passage.

When the door D, the lower end of which is supported by the floor hinge 1 having the above-described structure, closes the passage, the compression spring 8 externally fitted to the rod 7 has a predetermined length a as shown in FIG.
In addition, the compression spring 9 is held at a predetermined length b. When the door D is opened in one direction of the passage, for example, in the direction A, the rotary shaft 3 is rotated in the direction A and the heart-shaped cam 4 is rotated in the same direction. 6 moves to one end side of the casing 2. Along with that, the rod 7 moves to one end side of the casing 2, and the compression springs 8 and 9 are compressed by this, but since the compression spring 9 has a smaller spring constant than the compression spring 8, the compression spring 9 is mainly compressed. Will be.

When the door D is opened to a predetermined angle, for example, about 93 °, that is, when the rotary shaft 3 is rotated to about 93 °, the compression spring 8 is compressed to the length a1 as shown in FIG. On the other hand, the compression spring 9 is compressed to the length b1. At this time, both ends of the sleeve 17 are brought into contact with the spacer 14 and the end receiving metal fitting 16, respectively, and the compression spring 9 is in a state of not being compressed any more.

Further, when the door D is opened, only the compression spring 8 is compressed, and when the door is opened to the maximum opening angle, the compression spring 6 is compressed to the length b2 as shown in FIG. Since the spring constant of the compression spring 8 is larger than that of the compression spring 9,
Even if a large force such as a gust of wind is suddenly applied to the door D, the force is alleviated, the door does not open beyond a preset maximum opening angle, and the rod 7 and the like are not damaged.

When the door D is opened, the piston 18 moves to the one end side of the casing 2 in conjunction with the rod 7, and the operating oil flows to the other end side of the casing 2 in the one-way valve 22.
Shed through.

After the door D has been opened to the maximum opening angle, the door D is closed by releasing the spring force of the compression springs 8 and 9 until the door D is closed to about 93 °. Is closed by the large spring force of the compression spring 8 and thereafter mainly by the small spring force of the compression spring 9. Also, when the door D is closed, the piston 18 moves to the other end side of the casing 2 in conjunction with the rod 7, and when the door is opened, the hydraulic oil flown to the other end side of the casing 2 pushes the piston 18. Then, the flow rate is adjusted by the adjusting valve 25 and flown to the one end side of the casing 2, whereby the self-closing speed of the door is controlled and the door D is closed.

According to this embodiment, the compression spring 8 having a large spring constant and the compression spring 9 having a small spring constant are separately fitted in the length direction of the rod 7, and the end receiving fitting 16 is attached to the rod 7. Since the spacer 14 is provided, when the door D is rotated in the opening direction, the compression spring 9 having a small spring constant is mainly compressed until the door D is rotated to the predetermined angle, and the door D is rotated to the predetermined angle. Since the compression spring 8 having a large spring constant is compressed after the compression spring 9 having a small spring constant reaches the regulated compression amount, even when a large force is suddenly applied by the gust of wind when the door D is opened. Since the force suddenly applied by the compression spring 8 having a large spring constant is relieved, the door D is not opened beyond the preset maximum opening angle, and the rod 7 is deformed and the floor is deformed. The hinge is damaged Fear is that there is no.

Further, since the sleeve 17 is provided between the spacer 14 and the end receiving metal fitting 16 so that the spacer 14 and the end receiving metal fitting 16 are indirectly brought into contact with each other via the sleeve 17, the door is opened. Since the compression amount of the compression spring 9 having a small spring constant until D opens a predetermined angle can be reliably regulated, the timing at which only the compression spring 8 having a large spring constant is compressed thereafter can be set accurately. .

In the above-described embodiment, in order to regulate the compression amount of the compression spring 9 having a small spring constant, the sleeve 17 is provided between the spacer 14 and the end receiving metal fitting 16 so that the spacer 14 and the end receiving metal fitting are provided. 16 and the spacer 16 are indirectly contacted via the sleeve 17, but the end receiving fitting 16 and the spacer 14 may be directly contacted with each other.

Further, in the above-described embodiment, the compression spring 8 having a large spring constant is provided near the rotary shaft 3, but conversely, the compression spring 9 having a small spring constant is provided near the rotary shaft 3. Good.

Further, in the above-mentioned embodiment, the power transmission member for converting the rotation of the rotary shaft 3 into the linear motion is the heart-shaped cam 4.
The guide plate 6 is provided with a roller 5 with which it abuts and is connected to the rod 7. However, other known power transmission members using a gear and a link mechanism or the like may be used. For example, a gear that rotates coaxially with a rotating shaft is meshed with a fan gear, and a swing member that rotates integrally with the fan gear is connected to the fan gear, and a link mechanism is connected to the swing member. The rods may be connected.

In the above-mentioned embodiment, the floor hinge for a so-called free opening door that can be opened and closed on both inside and outside of the passage has been described. It can also be used as a floor hinge for supporting the lower end of the.

[0031]

As described above, according to the floor hinge of the present invention, even if a large force is suddenly applied when the door is opened, the spring constant is large after the door is opened by a predetermined angle. Since the force applied suddenly by the compression spring is relieved, the door will not open beyond the preset maximum opening angle, and there is no risk of the floor hinge being damaged due to deformation of the rod, etc. Is.

According to the second aspect of the present invention, the compression amount of the compression spring having a small spring constant until the door is opened by a predetermined angle can be reliably regulated. It is possible to precisely set the timing at which only the data is compressed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a floor hinge according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG. 1, showing a state in which the door is closed.

3 is a cross-sectional view taken along the line AA of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

5 is a cross-sectional view taken along the line DD of FIG.

FIG. 6 is a cross-sectional view showing a state where the door is opened at a predetermined angle.

FIG. 7 is a cross-sectional view showing a state in which a door is opened up to a maximum angle.

FIG. 8 is a view showing a state where the door is attached, (a)
Is a side view thereof, and (b) is a top view thereof.

FIG. 9 is an explanatory diagram showing an open / closed state of a door.

FIG. 10 is a sectional view showing a conventional floor hinge.

[Explanation of symbols]

1 floor hinge 2 casing 3 rotation axes 4 heart-shaped cam 5 roller 6 guide plate 6a long hole 7 rod 8 compression springs 9 compression springs 10 Top lid 11 connecting pin 12 connecting pins 13 End bracket 14 Spacer 15 connecting pin 16 End bracket 17 Sleeve 18 pistons 19 Connecting pin 20 cylinder chamber 21 ball valve 22 one way valve 23 channel 24 communication holes 25 Adjustment valve D door F1 upper frame F2 vertical frame H center hanging hinge

Claims (2)

[Claims] 1. A rotating shaft, which is connected to a lower end of a door and is rotated by the rotation of the door, is provided at one longitudinal end of the casing, and a rod movably in the longitudinal direction of the casing is provided at the other longitudinal end of the casing. And a compression spring that is compressed by the movement of the rod to close the door by itself is externally fitted to the rod, and the rotation shaft and the rod are converted by a power transmission member that converts the rotation of the rotation shaft into a linear motion. When the rod rotates in the opening direction, the rod moves in conjunction with the power transmission member toward one longitudinal end in the casing to compress the compression spring, and the door rotates in the closing direction. In the floor hinge in which the rod is moved to the other end side in the longitudinal direction in the casing and the door is closed by the spring force of the compression spring, the rod has a small spring constant. A compression spring having a large spring constant and a compression spring having a large spring constant are divided in the length direction of the rod and externally fitted in series. A floor hinge provided with an amount regulating member. 2. The compression amount restricting member is disposed between an end receiving member for receiving one end of the compression spring having a small spring constant, the compression spring having a small spring constant and the compression spring having a large spring constant. And a spacer that receives the other end of the compression spring having a small spring constant, and when the door is opened by a predetermined angle, the end receiving metal member and the spacer come into direct or indirect contact with each other to provide the spring constant. The compression amount of a compression spring having a small value is regulated.
Floor hinges listed.