JP2002030857A - Trap gate door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trap type gate door having a long service life being smoothly opened/closed without causing the sudden rotation of arm means and the door and the generation of unpleasant sound caused by the crash of the arm means even when manual force applied to the door is larger than normal regardless of the season as a result of eliminating temperature dependency. SOLUTION: This trap type gate door 1 is provided with posts 2, 3; a pair of arm means 6, 7 rotatably supported in the directions R1, R2; the door 10 mounted to the respective other ends 8, 9 of the arm means 6, 7; resilience applying means 11, 12 for applying resilience to the respective arm means 6, 7 in the spring-up direction of the door 10 against the own weight of the door 10 and arm means 6, 7; and a viscous shearing resistance applying means 13, 14 for applying viscous shearing resistance to the arm means 6, 7 against the rotation of the arm means 6, 7 in the direction R2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flip-up gate suitable for use as an entrance to a garage or the like.

[0002]

A gate of this type is disclosed in Japanese Patent Application Laid-Open No. 7-279564.
A support, an arm rotatably supported by the support at one end,
A door attached to the other end of the arm, and an elastic force applying means including a coil spring and a gas spring for applying an elastic force to the arm in a direction in which the door flips up against the dead weight of the door and the arm. It has been known.

[0003] By the way, the flip-up type gate described in the above publication applies an elastic flip-up force to the arm by a coil spring and a gas spring so as to resist the respective weights of the arm and the door. However, if the manual force applied to the door at the time of opening is large, this large manual force is applied to the arm in addition to the elastic flip-up force, so that the arm rotates vigorously. As a result, the arm collides with a stopper or the like, generating unpleasant noise and shortening the life of the door. Also, when closing the door manually, if a large manual force is applied to the door, similar inconvenience may occur.

[0004] Since the flip-up type gate is usually arranged outdoors where the temperature changes rapidly, the coil spring or the gas spring is also exposed to the environment where the temperature changes rapidly. By gender,
The above-mentioned inconvenience may occur extremely depending on the season.

[0005] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to eliminate the temperature dependency, and therefore, when the manual force applied to the door is larger than usual regardless of the season. Also, it is possible to open and close the door smoothly without causing a sudden rotation of the arm means and the door, eliminate the occurrence of uncomfortable noise due to the collision of the arm means, and provide a flip-up type gate having a long life. Is to do.

[0006]

According to a first aspect of the present invention, there is provided a flip-up gate, comprising: a support; arm means rotatably disposed on a vertical plane about one end of the support; A door attached to the other end of the arm means; an elastic force applying means for applying elastic force to the arm means in a direction in which the door flips up against the weight of the door and the arm means; And a viscous shear resistance applying means for applying a viscous shear resistance force to the arm means, wherein the elastic force applying means generates a contraction elastic force for rotating the arm means in a direction in which the door flips up. And an extension coil spring that generates an extension elastic force for rotating the arm means in the direction in which the door is flipped up.

[0007] In the flip-up type gate of the first aspect, since the elastic force applying means is constituted by the contraction coil spring and the extension coil spring, the temperature dependency is lower than that of the gas spring using air pressure. As a result, regardless of the season,
Even when the manual force applied to the door is larger than usual, without causing a sudden rotation of the arm means and the door,
The door can be opened and closed smoothly, the generation of unpleasant noise due to the collision of the arm means can be eliminated, and the life can be prolonged.

In the flip-up type gate according to the second aspect of the present invention, in the flip-up type gate according to the first aspect, the elastic force applying means is provided on the arm means so as to be rotated together with the rotation of the arm means. A connected rotatable cam plate, a flexible member having one end connected to the cam plate and being bent and guided in contact with a cam edge of the cam plate, and a flexure for preventing the extension coil spring from flexing. An end of the compression coil spring at the other end of the flexible member, one end of the extension coil spring on the cam plate, and the other end of each of the compression coil spring and the extension coil spring at the support. Are connected to each other.

According to the flip-up type gate of the second aspect, since one end of the contraction coil spring is connected to the other end of the flexible member which is bent and guided in contact with the cam edge of the cam plate, The rotational moment applied to the cam plate based on the tensile elastic force of the contraction coil spring can be kept constant irrespective of the rotational position of the cam plate, and one end of the extension coil spring which is prevented from being bent by the bending prevention member is a cam plate. As a result, the rotation moment applied to the cam plate based on the extension elastic force of the extension coil spring can be changed in accordance with the rotation position of the cam plate. Can be applied to the arm means.

In the flip-up gate according to the third aspect of the present invention, in the flip-up gate according to the first or second aspect, one end of the extension coil spring is connected to a cam plate via a push-pull chain. I have.

According to the flip-up type gate of the third aspect, since one end of the extension coil spring is connected to the cam plate by using the push-pull chain, a slight displacement of one end of the extension coil spring is prevented. acceptable.

In the present invention, a push-pull chain may be used as in the flip-up gate according to the third embodiment.
Without this, one end of the coil spring may be connected to the cam plate by a rigid rod or the like or directly.

In the flip-up gate according to a fourth aspect of the present invention, in the flip-up gate according to any of the first to third aspects, at least one of the contraction coil spring and the extension coil spring is concentrically arranged. Composed of a pair of coil springs,
The pair of coil springs have different elastic coefficients.

According to the flip-up type gate of the fourth aspect, the elastic coefficients of the pair of coil springs are made different from each other so that most of the spring-up force is assigned to one coil spring, and the other coil spring is finely divided. It can be used for adjustment.

In the flip-up gate according to a fifth aspect of the present invention, in the flip-up gate according to any one of the first to fourth aspects, the viscous shear resistance applying means rotates with the rotation of the arm means. A gap is formed between the one gap forming body and the one gap forming body, and the other gap is disposed rotatably relative to the one gap forming body and supported by the support. It has a formed body and a viscous body filled in the gap.

According to the flip-up gate according to the fifth aspect, since the viscous shear resistance is applied to the arm means by the shear deformation of the viscous body disposed between the gap forming members, A resistance force corresponding to the rotation speed of the arm means can be obtained, and rapid rotation of the arm means can be prevented.

In the flip-up gate according to a sixth aspect of the present invention, the flip-up gate according to the fifth aspect further comprises a one-way clutch, and the other gap forming member is provided via the one-way clutch. The one-way clutch prevents rotation of the other gap forming member with respect to the support when the arm means rotates in one direction, and prevents the other means from rotating when the arm means rotates in the other direction. The rotation of the gap forming member with respect to the column is allowed.

According to the present invention, the other gap forming member may be fixedly supported on the column so as not to rotate with respect to the column. Alternatively, the flip-up type gate according to the sixth aspect may be used. As described above, the arm means may be supported by a support via a one-way clutch, and by using such a one-way clutch, it is possible to specify the turning direction of the arm means that can apply the viscous shear resistance.

In the flip-up type gate according to the seventh aspect of the present invention, in the flip-up type gate according to the sixth aspect, rotation in one direction of the arm means is rotation in the door closing operation.

According to the flip-up type gate of the seventh aspect, the viscous shear resistance can be applied to the arm means in the closing operation, so that the collision of the arm means with the ground or the like can be further preferably avoided, and unpleasant noise can be prevented. Occurrence can be reliably eliminated, and the life can be prolonged.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention. In addition,
The present invention is not limited to these examples.

Referring to FIGS. 1 to 5, a flip-up type gate 1 of the present embodiment is a pair of upright columns 2 and 3 and pivots 2 and 3 at one ends 4 and 5 in vertical planes to the columns 2 and 3 respectively. freely,
That is, a pair of arm means 6 and 7 rotatably supported in the R1 and R2 directions, a door 10 attached to the other ends 8 and 9 of the arm means 6 and 7, respectively, a door 10 and the arm means 6 and 7, elastic force applying means 11 and 12 for applying elastic force to the arm means 6 and 7 in the direction in which the door 10 flips up against the own weight of the door 10, and transmitting means 15 and 1
In the rotation in one direction R3 transmitted from the transmission means 6, a viscous shear resistance force against the rotation is generated, and the transmission means 15
And 16, the viscous shear resistance against the rotation of the arm means 6 and 7 in the R2 direction is applied to the arm means 6 and 7, and the other direction R transmitted from the transmission means 15 and 16 is applied.
In the rotation of No. 4, viscous shear resistance applying means 13 and 14, which are configured not to generate viscous shear resistance against the rotation, and viscous shear resistance applying means 13 and 14, at least a minute opening in the door opening operation. From the door to the halfway opening, the rotation of the arm means 6 and 7 is transmitted as rotation in the other direction R4. In the door closing operation, at least from the halfway closing, the rotation of the arm means 6 and 7 is transmitted in one direction R3. While transmitting as rotation, viscous shear resistance applying means 13
And 14, the viscous shearing resistance generated in the arm means 6 and 7 is used as a resistance to the rotation of the arm means 6 and 7.
And 7 for transmitting the signals to the transmission means 7 and 7.

In this embodiment, the elastic force applying means 1 is provided on the support 2 side.
1. The viscous shear resistance applying means 13 and the transmitting means 15
An elastic force applying means 12, a viscous shear resistance applying means 14 and a transmission means 16 are provided on the column 3 side, respectively, but only one of the columns 2 and 3 is provided with an elastic force applying means, viscous shear resistance. A force applying means and a transmitting means may be provided, and one of the elastic force applying means and the viscous shear resistance applying means and the transmitting means may be provided on the support 2 side, and the support 3 may be provided on the support 3 side. Alternatively, any one of the elastic force applying means, the viscous shear resistance applying means, and the transmitting means may be provided. Hereinafter, the support 2 side will be described, and the support 3 side is configured in the same manner, and description thereof will be omitted.

In the present embodiment, the column 2 is formed of a hollow body, in which the elastic force applying means 11, the viscous shear resistance applying means 13 and the transmission means 15 are accommodated. A stopper 17 that defines a completely open door is attached to the support 2.

The arm means 6 includes an arm member 21 having a rectangular cross section, a shaft 23 having one end 22 fitted with one end 4 of the arm member 21, and a reinforcing member attached between the door 10 and the arm member 21. 24, and the shaft 23 is rotatably supported by the column 2 so that the arm means 6 is rotatably supported by the column 2 at one end 4 in the directions R1 and R2. In this example, the arm means 6 is configured to include only one arm member 21, but instead includes a plurality of arm members as described in JP-A-7-279564. It may be constituted as.

The door 10 of this embodiment is provided with a large number of horizontal grids 25 for blindfold, but the present invention is not limited to this, and other doors such as vertical grids may be used.

The elastic force applying means 11 has a cam plate 31 fixed to the shaft 23, one end of which is rotatably connected to the cam plate 31 via a pin 32, and the other end of which has one spring seat member 33. Push-pull chain 3 fixedly connected to
4 and the other spring seat member 35 attached to the column 2
And an extension coil spring 36 which is arranged between the spring seat members 33 and 35 in a compressed state in the state of FIG.
, And one end of the spring seat member 33
The cam plate 3 is fixed to the cam plate 3 with the other end portion penetrating the spring seat member 35 movably and slightly swingably to prevent the extension coil spring 36 from bending.
1 is connected via a pin 40 to one end 41, and a chain 47 as a flexible member whose intermediate portion 42 is bent and guided in contact with the cam edge 43 of the cam plate 31, and the other end 4 of the chain 47.
4. A connecting member 46 rotatably connected to pin 4 via a pin 45.
And one end 51 and 52 of the connection tool
A pair of coil springs 59 and 60 as contraction coil springs hooked on the other end of the coil springs 59 and 60 are hooked in the hole 58 and attached to the column 2 via the bracket 56. And a connecting tool 57 provided.

The cam plate 31 is provided with a contact portion 63 for abutting against the stopper 17 and preventing further rotation so as to define a completely open door.
An arc edge 61 centered on the rotation center of the shaft 23 and an arc edge 6
1 and a continuous straight edge 62.

The connecting member 57 has a screw portion 67,
A nut 68 for adjusting a spring force is screwed into the screw portion 67,
The coil spring 5 is attached to the bracket 56 and changes the screwing amount of the nut 68 into the screw portion 67.
The elastic force generated by 9 and 60 can be adjusted.

The contraction coil spring of this embodiment has a pair of coil springs 59 and 60 which are arranged concentrically and have different elastic coefficients, so that most of the spring-up force is assigned to one coil spring 59. Then, the other coil spring 60 can be used for fine adjustment.

The contraction coil spring composed of the coil springs 59 and 60 has a tension elastic force F1 and an arm length L1 of substantially constant length when the cam plate 31 rotates in the direction R1 in which the door 10 flips up. (= L1 · cos θ1 = L1
Cos90 ゜ = L1, and the rotation angle (= F1 ・) based on the intersection angle θ1 between the tensile elastic force F1 and the arm of the rotational moment is always approximately 90 ° in rotation in the R1 direction.
L1) is applied to the cam plate 31, so that an elastic force is applied to the arm means 6 in the R1 direction against the own weight of the door 10 and the arm means 6.

The extension coil spring 36 has one end 38 abutting against the spring seat member 33 and the other end 39 abutting against the spring seat member 35, and is compressed between the spring seat members 33 and 35 in the state shown in FIG. And is prevented from bending by the bending prevention member 37. In addition, instead of the push-pull chain 34 connecting the spring seat member 33 and the cam plate 31,
One end is rotatably connected to the cam plate 31 via a pin 32, and the other end is a rigid rod fixed to the spring seat member 33. The rigid rod connects the spring seat member 33 and the cam plate 31 to each other. The spring seat member 33 may be directly connected to the cam plate 31 via the pin 32 so as to be rotatable.

The extension coil spring 36 has a rotational moment (= F2 · L2 · sinθ2, based on the extension elastic force F2 and the arm length L2 · sinθ2 that gradually changes in the direction in which the door 10 flips up, that is, in the direction R1.交差 The intersection angle θ2 between the tensile elastic force F2 and the arm of the rotational moment is R
(Approximately 0 ° <θ2 <approximately 100 ° in the rotation in one direction) is applied to the cam plate 31, so that the elastic force is applied in the R1 direction against the dead weight of the door 10 and the arm means 6. It is provided to the arm means 6.

As described above, the elastic force applying means 11 of this embodiment
A rotatable cam plate 31 connected to the arm unit 6 via a shaft 23 and an end 41 connected to the cam plate 31 so that the cam unit 31 is rotated in the R1 and R2 directions together with the rotation of the arm unit 6. A chain 47 which is bent and guided by contacting the cam edge 43 of the cam plate 31;
A bending prevention member 37 for preventing bending of
One ends 51 and 52 of the coil springs 59 and 60 are connected to the connecting member 4.
6, one end 38 of the extension coil spring 36 to the cam plate 31 via the spring seat member 33 and the push-pull chain 34, and to the coil springs 59 and 60 and the extension coil spring 36. The other end 5 of each
4 and 55 and 39 are the connecting tool 57 and the bracket 5
6 and the support 2 via a spring seat member 35, respectively.

The viscous shearing resistance applying means 13 includes a viscous shearing resistance generating mechanism 65 for generating a viscous shearing resistance, and a viscous shearing resistance generating mechanism 65 which transmits the viscous shearing resistance to the viscous shearing resistance generating mechanism 65 via the transmitting means 15. In rotation, the viscous shear resistance generating mechanism 65 is operated, while the other direction R4 transmitted to the viscous shear resistance generating mechanism 65 via the transmission means 15 is used.
And a one-way clutch 66 for disabling the viscous shear resistance generating mechanism 65 in the rotation of.

The viscous shear resistance generating mechanism 65 is accommodated in the casing 71 as one gap forming body, and is rotatably accommodated in the casing 71 in both directions R3 and R4 relative to the casing 71. The other gap forming member 73 that forms a gap 72 in the casing 71 in cooperation with the casing 71, and a viscous body 74 made of a fluid such as silicon oil filled in the gap 72 between the gap forming body 73 and the casing 71. And a shaft 81 to which the gap forming member 73 is fixed and which is rotatable relative to the casing 71 in both the R3 and R4 directions.

The casing 71 is composed of two half members 76 and 77 formed symmetrically, and these are integrally formed by a rivet 78 or the like. Gap forming body 7
3 includes a disc-shaped plate body 80 having a stepped portion 79 formed on both sides facing each other, and each stepped portion 79 is provided with a seal ring 85 for preventing leakage of the viscous body 74. .

The viscous shearing resistance generating mechanism 65 is provided between the casing 3 of the plate body 80 of the gap forming body 73 and R3 or R4.
The rotation in the direction causes the viscous body 74 to generate viscous shear resistance.

In this example, the one-way clutch 66 is supported on one side by the column 2 and, on the other hand, supports the shaft 81 and is interposed between the shaft 81 and the column 2.
Of the shaft 81 with respect to the support 2
Allow the shaft 81 to rotate in the direction of R4
In the direction R3 of the shaft 81, the support 2
The rotation of the shaft 81 in the R3 direction is prohibited, and the shaft 81 is fixed to the support 2 so as not to rotate in the R3 direction. In this manner, one end 82 of the shaft 81 is supported by the column 2 via the one-way clutch 66, and the other end 83 of the shaft 81 is connected to the column 2 via the bearing 84.
In both directions.

The one-way clutch 66 fixes the shaft 81 to the support column 2 so that the shaft 81 does not rotate in the R3 direction during rotation in one direction R3 transmitted to the casing 71. A relative rotation in the R3 direction is generated between the vibrating body 80 and the vibrating body 74, thereby causing the viscous body 74 to undergo shear deformation and generate viscous shearing resistance so as to generate viscous shearing resistance in the viscous body 74. Mechanism 65
On the other hand, in the rotation in the other direction R4 transmitted to the casing 71, the shaft 81 can idle with respect to the column 2, and the rotation of the shaft 81 in the R4 direction with the rotation of the As a result, relative rotation between the casing 71 and the plate body 80 fixed to the shaft 81 is prevented from occurring, whereby the viscous body 7
In step 4, the viscous shear resistance generating mechanism 65 is deactivated so as not to generate the viscous shear resistance.

The transmission means 15 includes a connecting rod 86, one end 87 of which is rotatably connected to the cam plate 31 via a connecting pin 88, and the other end of the connecting rod 86. 89 is rotatably connected to the casing 71 of the viscous shear resistance applying means 13 via a connecting pin 90.
When the arm member 21 of the arm means 6 is rotated, the shaft 23 to which the arm member 21 is fixed is rotated, whereby the cam plate 31 fixed to the shaft 23 is rotated. The rotation of the plate 31 is transmitted to the casing 71. As described above, in this example, one end 87 of the connecting rod 86 is rotatably connected to the arm means 6 via the connecting pin 88 and the cam plate 31.

As will be described later, when the arm member 21 rotates within a predetermined range in the R1 direction, the connecting rod 86
1 to the casing 71.
To rotate in the R4 direction, and the arm member 21
In the other rotation in the R1 direction within a certain range, the arm member 21
This rotation of the arm member 21 is transmitted to the casing 71 so as to rotate the casing 71 in the R3 direction. In the rotation of the arm member 21 in the R2 direction within a certain range, the rotation of the arm member 21 is transmitted to the casing 71. The casing 71 is transmitted so as to rotate in the R3 direction, and in the other predetermined range of rotation of the arm member 21 in the R2 direction, this rotation of the arm member 21 is rotated by the casing 71 and the casing 71 is rotated by the R4 direction. To communicate. The connecting rod 86 transmits the viscous shearing resistance generated in the viscous shearing resistance applying means 13 and appearing on the casing 71 to the arm member 21 as a resistance to the rotation of the arm member 21.

The other end 89 of the connecting rod 86 has a connecting pin 90
Is formed, and the connecting rod 86 is formed therein.
The other end 89 of the connecting rod 86 itself is a long hole 102 formed in the connecting rod 86 itself.
And a connecting pin 90 inserted through the elongated hole 102, the connecting pin 90 is connected to the casing 71 of the viscous shear resistance applying means 13 so as to be rotatable and linearly movable in the A and B directions.

When the connecting rods 86 and 90 are not present, that is, when the casing 71 is not rotated in accordance with the rotation of the cam plate 31, the connecting pins 88 and 90 are opened from the fully closed state to the halfway open state (in this example, , Door opening angle 67
Until the rotation of the cam plate 31 in the R1 direction, the connecting pin 88 approaches the connecting pin 90, that is, the distance between the connecting pin 88 and the connecting pin 90 is shortened. Until the rotation of the cam plate 31 in the R1 direction, the connecting pin 88 separates from the connecting pin 90, that is, the connecting pin 8
8 and the connecting pin 90 are provided in a positional relationship such that the distance between them becomes long.

In the above-mentioned flip-up gate 1, when the door 10 is manually lifted, the arm member 21 is moved upward by R.
The cam plate 31 is rotated in one direction, and the cam plate 31 is rotated in the same direction. In this rotation, the own weight of the door 10 or the like is appropriately canceled by the tensile elastic force F1 of the coil springs 59 and 60 and the elastic force F2 of the extension coil spring 36, so that the manual door can be opened without difficulty. On the other hand, the same applies to the case of closing the door. When a slight downward force is applied to the door 10 manually, the arm member 21 is rotated downward in the R2 direction, and the cam plate 31 is similarly rotated. And the tensile elastic force F1 of the coil springs 59 and 60
The door can be easily closed by the action of the extension elastic force F2 of the extension coil spring 36.

Further, in the flip-up type gate 1, when the door is opened, the connecting pin 88 is rotated by the initial rotation of the cam plate 31 in the R1 direction (in this example, from a completely closed state to a minute opening angle of 8 °). The movement to approach 90 and the movement of the connecting rod 86 in the direction A toward the casing 71 side are performed at one end 1 of the long hole 102.
Only the relative movement of the connecting pin 90 from 00 to the other end 101 is caused, and the rotation of the arm member 21 in the R1 direction via the connecting rod 86 is not transmitted to the casing 71, and therefore, The door can be opened without the viscous shear resistance from the viscous shear resistance generating mechanism 65.

After the contact of the long hole 102 of the connecting pin 90 with the other end 101, the rotation of the arm member 21 in the R1 direction is further continued. The rotation is transmitted to the casing 71 via the casing 86, and the casing 71 is rotated in the R4 direction. R4 of casing 71
The rotation in the direction is transmitted to the shaft 81 via the viscous body 74. Here, since the shaft 81 is supported by the support column 2 via the one-way clutch 66 so as to be able to idle, the viscous body 7
The rotation of the casing 71 in the R4 direction transmitted to the shaft 81 via the shaft 4 causes the shaft 81 to rotate in the R4 direction as well. As a result, relative rotation occurs between the plate body 80 fixed to the shaft 81 and the casing 71. Therefore, further opening can be performed without the viscous shear resistance from the viscous shear resistance generating mechanism 65.

Further, the rotation of the arm member 21 in the R1 direction is continued, and the arm member 21 is opened just before the door is completely opened (in this example, the door opening angle 67
(°), the rotation of the cam plate 31 in the R1 direction moves the connecting pin 88 away from the connecting pin 90, contrary to the above. As a result, the connecting rod 86 is moved in the direction B so as to be separated from the casing 71, and causes the connecting pin 90 to relatively move from the other end 101 of the long hole 102 to one end 100 thereof. The other end 1 of the elongated hole 102 of the connecting pin 90
In the relative movement from 01 to one end 100, the rotation of the arm member 21 in the R1 direction is not transmitted to the casing 71 via the connecting rod 86, and therefore, also during this rotation,
The door can be opened without the viscous shear resistance from the viscous shear resistance generating mechanism 65.

When the door is opened, the long hole 102 of the connecting pin 90 is opened.
(In this example, the door opening angle 91.9)
°) After that, the rotation of the cam plate 31 in the R1 direction is
And transmitted to the casing 71 via
The casing 71 is rotated in the R3 direction. Casing 7
1 is transmitted to the shaft 81 via the viscous body 74. Here, for rotation in the R3 direction, the shaft 81
Are prevented from rotating by the one-way clutch 66, the plate body 80 fixed to the shaft 81 and the casing 71
And a relative rotation occurs between the viscous body 74 and the viscous body 74. As a result, the viscous shear resistance appears on the casing 71 corresponding to the viscous shear, and the viscous shear resistance is
Braking is applied to the rotation of the arm member 21 in the R2 direction via the connecting rod 86.

As shown in FIG. 6, when the door is completely opened (in this example,
When the door opening angle reaches 93 °), the contact portion 63 of the cam plate 31 comes into contact with the stopper 17 to inhibit the rotation of the arm member 21 in the R1 direction.

As described above, in the present embodiment, the transmitting means 15 sends the viscous shear resistance applying means 13 from the completely closed (opening angle of 0 °) to the minute opening (opening angle of 8 °) in the opening operation. From the halfway opening (opening angle 67 °) to just before the complete opening (91.9 °), the rotation of the arm means 6 is not transmitted, and the halfway opening (opening angle) in the opening operation is performed. The rotation R1 of the arm means 6 is transmitted as rotation in one direction R3 from before the complete opening of the door (67 °) (from a door opening angle of 91.9 °) to when the door is completely opened (door opening angle of 93 °). To
It is configured. Therefore, in the flip-up gate 1,
In the door opening operation, there is no inconvenience that the door opening operation becomes difficult due to the viscous shear resistance from the viscous shear resistance generating mechanism 65, and the door can be opened with a relatively small operation force. Before the contact of the part 63 with the stopper 17, the rotation of the arm member 21 is braked.
A collision of the contact portion 63 with the stopper 17 can be avoided.

On the other hand, when the door 10 is manually lowered from the fully opened door shown in FIG. 6 when the door is closed, the arm member 21 is rotated downward in the R2 direction, and the cam plate 31 is moved together therewith. Is similarly rotated. In this rotation, the connecting pin 8 is rotated from the completely opened state to the R2 direction rotation of the cam plate 31 (in this example, up to a door opening angle of 40.5 °).
8 is moved closer to the connecting pin 90 and then the connecting pin 88 is moved away from the connecting pin 90, and the movement of the connecting rod 86 in the A and B directions toward the casing 71 and then away from the casing 71 is performed by moving the connecting pin 90 It merely causes a relative movement from one end 100 of the elongated hole 102 to the other end 101 and vice versa, and rotation of the arm member 21 in the R2 direction via the connecting rod 86 is transmitted to the casing 71. Therefore, the viscous shear resistance generating mechanism 65
The door can be closed without viscous shear resistance from the door.

After the long hole of the connecting pin 90 abuts on the other end 101 (in this example, the door opening angle is 40.5 °), the cam plate 3
1 continues rotating in the R2 direction, the cam plate 31
The rotation in the direction is transmitted to the casing 71 via the connecting rod 86, and the casing 71 is rotated in the R3 direction. The rotation of the casing 71 in the R3 direction is transmitted to the shaft 81 via the viscous body 74. Here, since the shaft 81 is supported via the one-way clutch 66 so as not to rotate in the R3 direction with respect to the support column 2, the plate 8 fixed to the shaft 81
0 and the casing 71 are rotated relative to each other, so that the viscous body 74 is viscously sheared, and a viscous shearing resistance appears on the casing 71 corresponding to the viscous shearing. Arm member 21 via connecting rod 86
Is applied to the rotation in the R2 direction. This braking is applied to the rotation of the arm member 21 in the R2 direction until the door is completely closed as shown in FIG.

As described above, in the present embodiment, the transmission means 15 transmits the viscous shear resistance applying means 13 from the fully opened state (opening angle 93 °) to the halfway closed state (opening angle 40.5) in the closing operation.
Until (°), the rotation of the arm means 6 is not transmitted, and the door is closed halfway (opening angle 40.5 °) to completely closed (opening angle 0 °).
Up to this point, the rotation of the arm means 6 is transmitted as rotation in one direction R3. Therefore, even when the door is closed, it can be started with a small operation force, and the door can be closed slowly in the middle of the door closing, so that a collision with the ground or the like can be avoided when the door is completely closed.

In this example, the intersection angle θ3 between a line 111 connecting the center of the connecting pin 88 and the center of the connecting pin 90 and a line 112 connecting the center of the connecting pin 90 and the center of the shaft 81 is defined as
It is increased from the halfway closed door (opening angle 40.5 °) to the fully closed door, and becomes almost 90 ° when the door is completely closed. Here, the rotational torque is maximized. The resistance to the rotation of the arm 6 based on the generated viscous shear resistance is gradually increased in the door closing operation and transmitted to the arm 6. Therefore, this also allows the door to be closed slowly in the middle of the door closing, thereby avoiding a collision with the ground or the like when the door is completely closed.

In the flip-up gate 1, the coil spring 5
9 and 60 and the extension coil spring 36 for applying elastic force 1
1 makes it possible to eliminate the temperature dependency as compared with a gas spring using pneumatic pressure. As a result, regardless of the season, even when the manual force applied to the door 10 is larger than usual, the arm means 6 can be used. Further, the door 10 can be opened and closed smoothly without causing the door 10 to turn suddenly, the generation of uncomfortable sound due to the collision of the arm means 6 can be eliminated, the life can be extended, and the cam plate 31 can be extended. Cam edge 4
Since the one ends 51 and 52 of the coil springs 59 and 60 are connected to the other end 44 of the chain 47 which is bent and guided in contact with the cam plate 31, the cam plate 31 based on the tensile elastic force F1 of the coil springs 59 and 60. Can be made constant irrespective of the rotational position of the cam plate 31, and the one end 38 of the extension coil spring 36, which is prevented from bending by the bending prevention member 37, is connected to the cam plate 31. The rotational moment applied to the cam plate 31 based on the extension elastic force F2 of the extension coil spring 36 is applied to the cam plate 31.
As a result, an optimal elastic force can be applied to the arm unit 6 at the rotational position of the arm unit 6.

Further, in the flip-up type gate 1, since the viscous shear resistance generating mechanism 65 is used, the delicate balance between the tensile elastic force F 1 of the coil springs 59 and 60 and the elastic elastic force F 2 of the extension coil spring 36 is not balanced. Even if it collapses, the door can be smoothly opened and closed without being affected so much. Further, when the lifting force or the pulling-down force applied to the door 10 is relatively large and the arm member 21 is rapidly rotated, the relative rotation of the plate body 80 in the casing 71 tends to be faster, resulting in a viscosity increase. Body 74
The viscous shear resistance generated by the force increases, and this large viscous shear resistance is applied to the arm member 21. Therefore, a braking force is applied to the arm member 21 substantially in proportion to the rotation speed, and the door 10 is suddenly moved. It is possible to avoid a situation in which the robot rotates and collides with the ground or the stopper, generating unpleasant noise.

Instead of or in addition to the above, a long hole is formed in the casing 71 of the viscous shear resistance applying means 13, and the connecting rod 86 is formed by the long hole and the connecting pin 90 inserted through the long hole. May be connected to the viscous shear resistance applying means 13 so as to be rotatable and linearly movable. Also, shaft 8
1 so that the rotation of the arm member 21 is transmitted to the connecting rod 8.
6 may be connected to the shaft 81, and the one-way clutch 66 may be interposed between the casing 71 and the column 2.

In the above example, the gap forming body 73 is constituted by the plate body 80 having no unevenness. Instead, as shown in FIG. 7, a plurality of projections 91 are concentrically formed on both sides of the plate body 80. In this case, a recess 92 for receiving the protrusion may be formed concentrically on the casing 71, and a gap forming body 73 having such a protrusion 91 and a casing 71 having the recess 92 may be formed. May be filled with a viscous body 74 and operated in the same manner as described above.

Also, without forming the long hole 102,
The other end 89 of the connecting rod 86 is connected to the casing 71 by a connecting pin 90.
May be connected only in a rotatable manner.
02 is not required, the transmission means 15
In place of the connecting rod 86, a winding transmission mechanism including an endless chain and a sprocket wheel around which the endless chain is wound, or a gear mechanism including a plurality of intermeshing gears may be used. In this case, the one-way clutch 66 is arranged on the sprocket wheel or gear on the shaft 23 side so that the rotation of the cam plate 31 in the R1 direction is not transmitted to the viscous shear resistance applying means 13, In the rotation of the cam plate 31 in the R2 direction, such rotation may be transmitted to the viscous shear resistance applying means 13.

In the flip-up gate 1 described above, the transmission means 1
In this example, the rotation of the arm means 6 is transmitted to the viscous shear resistance applying means 13 through the transmission means 15.
8 and 9, the flip-up gate 1 may be configured by providing the viscous shear resistance applying means 13 concentrically with the shaft 23 as shown in FIGS. 8 and 9.

In the flip-up gate 1 shown in FIGS. 8 and 9, the viscous shear resistance applying means 13 includes a viscous shear resistance generating mechanism 202 for generating a viscous shear resistance, and a viscous shear resistance generating mechanism 202. In the transmitted rotation in one direction R2, the viscous shear resistance generating mechanism 202 is operated, while in the other direction R1 transmitted to the viscous shear resistance generating mechanism 202, the viscous shear resistance generating mechanism 202 is operated. And the one-way clutch 66 to be deactivated.

The viscous shear resistance generating mechanism 202 has a gap between one gap forming body 211 fixed to one end of the arm means 6 so as to be rotated by the rotation of the arm means 6 and the gap forming body 211. 212, and is rotatably arranged in the directions of R1 and R2 relative to the gap forming body 211, and is supported by the support column 2.
13 and a viscous body 214 filled in the gap 212, and the center of relative rotation of the gap forming bodies 211 and 213 and the center of rotation of the arm means 6 are arranged concentrically.

The gap forming body 211 has one half housing 221 integrally having an annular flange portion and a cylindrical portion.
And the other half housing 222 integrally having an annular flange portion, a cylindrical portion, and a shaft portion, and the half housings 221 and 222 abut against each other at the flange portion to form the flange portion. Are fixed to each other by rivets or the like, and a half housing 222 is rotatably supported on the support column 2 in the directions of R1 and R2.
One end 4 of the arm member 21 is fitted to the half housing 222 constituting the armature 3, whereby the arm means 6
One end 4 is supported by the column 2 so as to be rotatable in the R1 and R2 directions. The cam plate 31 is fixed to the flange portion of the gap forming body 222 by a bolt or the like.

The gap forming member 213 is provided at one end with the bearing 2.
It is rotatably supported by the half housing 222 in the directions of R1 and R2 via the base 31, and is supported on the support column 2 via the one-way clutch 66 at the other end.

The viscous shear resistance applying means 13 generates a viscous shear resistance force on the viscous body 214 by rotating the gap forming body 211 in the R1 or R2 direction with respect to the gap forming body 213, and generates the generated viscous shear resistance force. , A viscous shear resistance is applied to the arm means 6.

The one-way clutch 66 is connected to the R
In the rotation in the two directions, the rotation of the gap forming body 213 in the R2 direction with respect to the column 2 is prevented.
The rotation in one direction is allowed. Due to the one-way clutch 16, the arm means 6 is moved to R2
When rotating in the direction, the gap forming body 211 is rotated relative to the gap forming body 213 in the R2 direction. As a result, the viscous body 214 is sheared and deformed, and a viscous shear resistance force is applied to the arm means 6. On the other hand, when the arm means 6 rotates in the R1 direction in the door opening operation, the gap forming body 213 is also rotated in the R1 direction together with the gap forming body 211, and as a result, the viscous body 214 is rotated.
Does not occur, and the viscous shearing resistance is not applied to the arm means 6.

Also in the flip-up type gate 1 shown in FIGS. 8 and 9, since the elastic force applying means 11 is constituted by the coil springs 59 and 60 and the extension coil spring 36, it is compared with a gas spring using air pressure. As a result, even if the manual force applied to the door 10 is larger than usual regardless of the season, the arm means 6 and the door 10
Door 1 smoothly without causing sudden rotation
0 can be opened and closed, the generation of uncomfortable sound due to the collision of the arm means 6 can be eliminated, the service life can be extended, and the other end 44 of the chain 47 which is bent and guided in contact with the cam edge 43 of the cam plate 31. Are connected to one ends 51 and 52 of the coil springs 59 and 60, respectively.
The rotational moment applied to the cam plate 31 based on the tensile elastic force F1 of 0 can be made constant irrespective of the rotational position of the cam plate 31, and one end of the extension coil spring 36 is prevented from being bent by the bending preventing member 37. 38 is the cam plate 31
As a result, the rotational moment applied to the cam plate 31 based on the extension elastic force F2 of the extension coil spring 36 can be changed in accordance with the rotational position of the cam plate 31,
Optimal elastic force is applied to the rotation position of the arm means 6.
Can be given.

The flip-up type gate 1 shown in FIGS. 8 and 9 also has a viscous shear resistance generating mechanism 65 provided with a gap forming body having irregularities as shown in FIG. 13 may be configured.

[0070]

According to the present invention, as a result of eliminating the temperature dependence, the arm means and the door can be rapidly rotated regardless of the season even when the manual force applied to the door is larger than usual. The door can be opened and closed smoothly without any trouble, the generation of uncomfortable sound due to the collision of the arm means can be eliminated, and a flip-up type gate having a long life can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a preferred example of an embodiment of the present invention.

FIG. 2 is an explanatory side view of an upper portion of a column in the example shown in FIG. 1;

FIG. 3 is an explanatory side view of a lower portion of the column in the example shown in FIG. 1;

FIG. 4 is an explanatory front view of an upper portion of a support in the example shown in FIG. 1;

FIG. 5 is an explanatory front view of the viscous shear resistance generating mechanism of the example shown in FIG. 1;

FIG. 6 is an operation explanatory diagram of the example shown in FIG. 1;

FIG. 7 is an explanatory front view of another example of the viscous shear resistance generating mechanism shown in FIG. 1;

FIG. 8 is an explanatory side view of an upper portion of a column in another preferred example of the embodiment of the present invention.

FIG. 9 is an explanatory front view of an upper portion of the column in the example shown in FIG. 8;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 flip-up type gate 2 support 6 arm means 10 door 11 elastic force applying means 13 viscous shear resistance applying means 36 elongation coil spring 59, 60 coil spring

Claims (7)

[Claims] 1. A strut, arm means rotatably arranged in a vertical plane about one end with respect to this strut, a door attached to the other end of the arm means, and a door and arm means Elastic force applying means for applying elastic force to the arm means in the direction in which the door flips up against its own weight; and viscous shear resistance applying means for applying viscous shear resistance force to the arm means against rotation of the arm means. Wherein the elastic force applying means comprises:
It has a compression coil spring for generating a contraction elastic force for rotating the arm means in the direction in which the door flips up, and an extension coil spring for generating an extension elastic force for rotating the arm means in the direction in which the door flips up. A flip-up gate. 2. An elastic force applying means includes: a rotatable cam plate connected to the arm means so as to be rotated together with the rotation of the arm means; one end connected to the cam plate; A flexible member that is bent and guided by contacting the cam edge of the plate; and a bending prevention member that prevents bending of the extension coil spring. One end of the compression coil spring is connected to the other end of the flexible member. 2. The flip-up gate according to claim 1, wherein one end of the extension coil spring is connected to the cam plate, and the other end of each of the compression coil spring and the extension coil spring is connected to the column. 3. The flip-up gate according to claim 2, wherein one end of the extension coil spring is connected to the cam plate via a push-pull chain. 4. The coil spring according to claim 1, wherein at least one of the compression coil spring and the extension coil spring comprises a pair of concentrically arranged coil springs, the pair of coil springs having different elastic coefficients from each other. A flip-up gate according to any one of the preceding claims. 5. The viscous shear resistance applying means forms a gap between one gap forming body that rotates with the rotation of the arm means and the one gap forming body, and the one gap forming body. 5. The apparatus according to claim 1, further comprising: a second gap forming body that is rotatably disposed relative to the other, and is supported by the support, and a viscous body filled in the gap. The flip-up gate. 6. The viscous shear resistance applying means further includes a one-way clutch, the other gap forming member is supported by a support via a one-way clutch, and the one-way clutch is provided by an arm means. In the rotation in one direction, the rotation of the other gap forming body with respect to the column is prevented, and in the rotation of the arm means in the other direction, the rotation of the other gap forming body with respect to the column is allowed. A flip-up gate according to claim 5. 7. The flip-up gate according to claim 6, wherein the rotation of the arm means in one direction is rotation in a door closing operation.