JP3418254B2 - Floor hinge - Google Patents

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 rotatably supporting a lower end of an entrance / exit door of a movie theater or the like.

[0002]

2. Description of the Related Art A conventional floor hinge disclosed in Japanese Utility Model Publication No. 2-22471 is shown in FIG. A main shaft 100 which is supported by a case and rotates in conjunction with opening and closing of a door, a driven gear 54 which meshes with the main shaft 100 and rotates, and a biasing gear which is linked with the driven gear 54 and urges the main shaft 100 in a door closing direction. Means 30, 35, 36 and the biasing means 30,
Of the 35 and 36, the movable part 3 linked to the driven gear 54.
Link means 27, 29 for connecting the 0 to the driven gear 54 are provided.

A lock lever 39 for engaging the roller 37 on the driven gear 54 and stopping the main shaft 100 at a predetermined angle is supported by the movable member 34, and the lock lever 39 moves the roller 37. It is configured to swing in a direction substantially in contact with the path.

When the door is opened, the main shaft 100 rotates in the arrow direction. As a result, the driven gear 54 also rotates and the door moves to 9
In the position opened by 0 degrees, the roller 3 of the driven gear 54 is
7 is pressed into the recess 102 of the lock lever 39. As a result, the rotation of the main shaft 100 (that is, the door) is stopped, and the door is stopped and held at the position opened by 90 degrees.

[0005]

However, the conventional device as described above has the following problems.

In the above apparatus, the link means is composed of a plurality of links 27 and 29, so that the movable portion 30 is slanted about the shaft 28 as the door is opened and closed. Therefore, the biasing means is pulled obliquely to generate frictional resistance, and the rotational resistance between the plurality of links 27 and 29 is added, resulting in a mechanical loss and a flow loss.
The problem was that the response of the entire hinge was reduced.

A lock lever 39 for stopping the main shaft 100 at a predetermined angle is supported by the movable member 34 and swings in a direction substantially in contact with the moving path of the roller 37. Therefore, in order to stop the main shaft 100 at a predetermined angle, in addition to accurately positioning the movable member 34 and the lock lever 39, the links 49 and 50 that define the stationary position of the lock lever 39 must also be accurately positioned. Therefore, there is a problem that the parts themselves are required to have high precision and are difficult to manufacture.

An object of the present invention is to solve the above problems and to provide a floor hinge having a high mechanical response and capable of smoothly opening and closing a door.

It is another object of the present invention to provide a floor hinge in which the mechanism for stopping the main shaft at a predetermined angle can be easily designed and manufactured.

[0010]

A floor hinge according to the present invention is supported by a case and rotates in conjunction with opening and closing of a door, a driven gear that meshes with the main shaft, and a driven gear. In the configuration in which the urging means for urging the door in the closing direction of the door and the link means for connecting the movable portion of the urging means that is linked to the driven gear to the driven gear are provided, the movable portion is supported so as to be linearly movable. A feature is that a guide mechanism is provided and the link means is configured by a single link.

The floor hinge of the present invention is further movable.
The locked portion provided in section, further provided, a locking portion locking mechanism for stopping a spindle at a predetermined angle by engaging the engaging portion of the lock lever which is pivotally supported on the case, the linear moving unit It is characterized in that it can swing in a direction intersecting the moving direction.

The floor hinge of the present invention further comprises a lock switching mechanism for switching the lock lever between the lockable position and the non-locking position, and the lock switching mechanism has a switching arm pivotally supported by the case and the switching arm. A switching link for connecting the lock lever and the lock lever is provided, and in the state of being switched to the lockable position, a biasing means for abutting the lock lever and biasing the lock portion of the lock lever toward the locked portion side. Is provided in the lock mechanism, and in the same state, a clearance that allows the locking portion of the lock lever to swing to the side opposite to the locked portion side is provided between the switching arm and the switching link.
It is characterized in that it is provided at the connecting portion of .

[0013] Floor hinge of the invention, the guide mechanism, a movable pin for connecting the links to the movable portion, sliding
The movable pin is provided, and the locked portion is provided on the movable pin.

[0014]

In the floor hinge of the present invention, since the guide mechanism for linearly movably supporting the movable portion of the urging means linked to the driven gear is provided, the movable portion moves in the urging direction of the urging means. It does not move diagonally and it is difficult to cause mechanical loss. In addition, since the link means for connecting the movable portion linked to the driven gear to the driven gear of the urging means is constituted by a single link, compared to the case where this link means is constituted by a plurality of links. Less likely to cause mechanical loss.

The floor hinge of the present invention is movable.
The engaged portion provided in the section, are further provided a locking mechanism for stopping at a predetermined angle to the main shaft by engaging the engaging portion of the lock lever which is pivotally supported on the case. Here, since the locking portion is configured to be swingable in a direction intersecting the linear movement direction of the movable portion, the locus of the locked portion on the movable portion and the swing locus of the locking portion intersect. However, by determining this intersecting portion in the design, it is possible to accurately and easily define the locking position of the locked portion, and by extension, the predetermined angle at which the main shaft should be stopped. Further, even when the following lock switching mechanism or the like is provided, the influence of the design / manufacturing error of the switching mechanism on the locking position of the locked portion is very small.

In the floor hinge of the present invention, a lock switching mechanism for switching the lock lever between the lockable position and the non-locking position is further provided. Here, according to this structure, the accuracy of the locking position of the movable portion is substantially accurate by the lock lever. Therefore, the structure can be simplified by providing the lock switching mechanism with a switching arm pivotally supported by the case and a switching link connecting the switching arm and the lock lever. The elastic engagement between the locked part and the locking part is
The clearance that allows the locking part of the lock lever to swing to the side opposite to the locked part has a switching arm and a switching link.
It is achieved by providing it at the connecting part with the KU .

[0017] In the floor hinge of the invention, the guide mechanism, met movable pin connecting the link to the movable portion
Since the movable pin is provided so as to be slidable, it is possible to directly guide the connecting portion between the movable portion and the link in which the acting force direction is different, and it is possible to reduce the loss for transmitting the force. Moreover, since the locked portion is provided on the movable pin, the lock mechanism can be made compact.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view showing a state in which the door is attached, and the second pivots 4 are provided on the upper and lower portions of the door 1, respectively.
b, arm 2 is attached. The upper part and the upper frame of the door 1 are held by a first pivot 4a and a second pivot 4b. The lower arm 2 is pivotally supported on the main shaft 11 of the floor hinge 3 according to the present invention . Here, the floor hinge 3 according to the present invention, as shown in FIG.
0, a main shaft 11 which is supported by the case 10 and rotates in association with opening and closing of the door 1, a driven gear 12 which meshes with the main shaft 11 and rotates, and a main shaft 11 is biased in the closing direction of the door 1. The urging means 13 and the pulling metal fitting 14 which is a movable part of the urging means 13 and which cooperates with the driven gear 12 are connected to the driven gear 12.
And a guide mechanism 16 for supporting the pulling metal fitting 14 so as to be linearly movable. Furthermore, a lock mechanism 17 for stopping the spindle 11 at a predetermined angle
When, and a lock switching mechanism 18 for switching the lock lever -52 lock mechanism 17 to the latchable position and unlocked position.

The case 10 is divided into a case body 21 and a case lid 22 for sealing the upper part of the case body 21. The inside of the case 10 is filled with hydraulic oil, and in order to prevent the hydraulic oil from leaking, the case main body 21
A packing 23 is provided between the case and the case lid 22.
A pair of cylinder parts 2 for slidably supporting a piston 43 of a biasing means 13 described later on one end side of the case body 21.
4, 24, and the ends of the cylinder portions 24, 24 are sealed by screwing cylinder lids 25, 25 together.

As shown in FIGS. 1 and 3, the main shaft 11 supported by the case 10 has its lower portion supported by a thrust bearing 11a, while its upper portion is supported by a radial bearing 11b, whereby the main shaft 11 can be vertically and radially extended. Withstand load in any direction
It is configured to. Case cover 22 on the spindle 11
An O-ring 26 for sealing is provided at a position between the lower surface of and the radial bearing 11b. In addition, a boss having a taper portion 11c for closely fitting with the arm 2 is projected from the upper portion of the main shaft 11.

The driven gear 12 has teeth 12 which rotate on a part of its circumference by meshing with a gear 11d provided on the preceding main shaft 11.
A case-shaped gear having a fan shape in plan view provided with a.
It is rotatably pivoted to.

The pull metal fitting 14 constituting the movable portion of the biasing means 13 and one end portion of the driven gear 12 are connected to each other by the link 1 described above.
5 are connected via pins provided at each end. Among these pins, the movable pin 31 that connects the link 15 and the pulling metal member 14 has rollers 32 and 32 above and below, respectively. Inside the case body 21 and the case lid 22, the grooves 21a, 2 are linearly formed along the urging direction of the urging means 13, which is the longitudinal direction of the case 10.
2a is formed, and a guide mechanism 16 for linearly slidably supporting the movable pin 31 in the grooves 21a and 22a via the rollers 32 and 32 is formed.

The biasing means 13 is composed of pins 41a, 41a.
With Ke - scan 10 slidably passed through a pair of rods 42, 42 to the fixed guide 41 mounted in a fixed state with respect to the pin 42a on one end side of each rod 42,
While attaching the above-mentioned pulling metal fitting 14 via 42a ,
The piston 4 is attached to the other end side through the pins 43a and 43a.
3,43 are attached. Further, a pair of springs 44, 4 are provided between the fixed guide 41 and the pistons 43, 43.
4 and the spring receiver 45 penetrate the fixed guide 41 and the spring receiver 45 so that the piston 43 is stretched, and the pulling metal fitting 14 is moved in the right direction on the paper surface of FIG. 1, that is, the main shaft 11 is in the door closing direction. It is biased to rotate clockwise. Spring receiver 45
One end of the spring is pivotally supported to the case 10 via a pin 45a, and a biasing arm 46 extending from the other end of the spring receiver 45 to the left hand side of the drawing of FIG. Is urged to.

On the right side of each of the pistons 43, 43,
The non-return valves 43b and 43b which allow the hydraulic oil on the left side of the piston 43 to flow only toward the right side are provided.
Further, as shown in FIGS. 6 , 7 and 9 , oil passages 76, 76a to d, 78, 78a, 78b for communicating the inside of the cylinder portion 24 of the case main body 21 with the cylinder lid 25 side are provided with cases. The oil passages 76, 76 are formed on the body 21 and
Three speed adjusting valves 71 to 73 for adjusting the oil passage amount of a to d, 78, 78a and 78b are respectively provided at the inlet and outlet of the oil passage. Then, these speed adjusting valves 71 to 7
By adjusting No. 3, the oil passage speed when urging the main shaft 11 in the door closing direction is controlled, and the closing speed of the door can be adjusted.

[0026] Here, with reference to FIG. 1, 4, 5, 8, the locking mechanism 17 for stopping the spindle 11 at a predetermined angle and, latchable position and disengaged the lock lever -52 locking mechanism 17 Lock switching mechanism 1 for switching to the stop position
8 will be described.

The lock mechanism 17 pivotally supports one end of a lock lever 52, which is generally L-shaped in plan view, on the case 10 by means of a pin 51, and a locked portion provided on the pulling metal fitting 14 side. By locking the barrel roller 32 to the locking portion 52a provided on the other end side of the lock lever 52, the pull metal fitting 14
Is configured to be locked at a predetermined position. Locking part 52
Since a can swing in a direction that intersects the linear movement direction of the pulling member 14, it is easy to set the locking position of the pulling member 14 and the dimensional error during manufacturing can be reduced. In addition, the locking position of the roller 32 is approximately 9 in the door in this embodiment.
It is set so that it can be locked when it is opened 0 degrees,
The locking position of the roller 32 can be appropriately changed so that the lock angle of the door is set to an angle other than 90 degrees.

The lock switching mechanism 18 includes a switching arm 55 and a switching lever 56 with respect to the case 10 via a shaft 54.
Is integrally rotatably supported, and a switching arm 55 and a lock lever 52 are connected by a switching link 57. The switching lever 56 is fitted in a recess provided on the upper portion of the case lid 22, and the step portion provided on the shaft 54 and the case lid 22.
An O-ring 27 for sealing is interposed between and. Figure 1
In this state, the lockable position is indicated, and by rotating the switching lever 56 in the clockwise direction, the lock lever 52 is rotated in the counterclockwise direction via the switching link 57 as shown in FIG. It is possible to switch to the stop position. In addition, the switching link 57 is accommodated in the recess that accommodates the switching link 57.
A pedestal 59 having a fan-shaped fitting portion 59a capable of holding each of the switching positions, and the fitting portion 59a of the pedestal and the fan-shaped projection 6
With the cap 60 having 0a fitted therein, the pedestal 59 and the cap 60 are attached to the case 10 with the flat head screws 61, 61 so that the switching lever 56 can be held at any switching position. The right end side of the lock lever 52 is a biasing arm 4 which is interlocked with the biasing means 13 when the lock switching mechanism 18 is switched to the lockable position.
The contact surface 46a, which is the left end of the contact member 6, contacts . Further, the switching arm 55 and the switching link 57 are pivotally connected to each other via a connecting pin 58, and a long hole 57a is provided on the side of the switching link 57 in the pivotal connecting portion by the connecting pin 58. Then, in the state of switching to the lockable position, the lock lever 5
A clearance is formed so that the second locking portion 52a can be swung to the side opposite to the roller 32.

Next, the operation of the floor hinge having the above structure will be described.

First, when the door is opened, the main shaft 11 rotates clockwise in FIG. 1, the driven gear 12 rotates counterclockwise accordingly, and the pulling member 14 moves leftward via the link 15. Along with this movement, the springs 44, 44 are compressed and deformed between the pistons 43, 43 and the spring receiver 45, and an urging force is stored. When the opening and rotation of the door is stopped, the springs 44, 44 expand, and the main shaft is urged to rotate counterclockwise in FIG. 1 by the operation opposite to the above operation, and the door is closed.

In the switching state to the lockable position shown in FIG. 1, the connecting pin 58 has the elongated hole 57a in the switching link 57.
The switching link 57 is stretched so as to abut the right end side of the lock lever 52 and bring the right end side of the lock lever 52 into contact with the contact surface 46a of the biasing arm 46. By opening the door, the roller
32 moves to the left side, abuts on the locking portion 52a, and rocks the lock lever 52 slightly clockwise. This swing is allowed only by the clearance due to the formation of the long hole 57a. At this time, the springs 44 , 44 are slightly compressed and deformed to exert an urging force that causes the spring receiver 45 to swing clockwise around the pin 45a. When the roller 32 gets over the locking portion 52a, the lock lever 52 swings counterclockwise again through the biasing arm 46 and returns to the predetermined position. On the other hand, in the switching state to the non-locking position in FIG. 8, the lock lever 52 is rocked and held so that the locking portion 52a is located outside the movement trajectory of the roller 32 along the grooves 21a and 22a.

Next, the operation of the oil passage when the door is closed will be described with reference to FIGS.

When the door opening angle is 90 degrees or more, as shown in FIG. 9, the pistons 43 , 4 are mainly passed through the oil passages 76a, 76, the speed adjusting valve 71 and the oil passage 76b.
The hydraulic oil on the right side of No. 3 flows into the left side of the piston at the first speed. When the opening angle of the door reaches 30 degrees,
No oil passage 76c and no speed adjustment valve
The piston is located just between the oil passages 76d . afterwards,
When the opening angle of the door is less than 30 degrees to 5 degrees or more, the oil passage 76c, the speed adjustment valve 72, and the oil passages 76, 7 are mainly used.
The hydraulic oil on the right side of the pistons 43 , 43 flows into the left side of the pistons at a second speed through 6d. Therefore, the speeds of the first speed and the second speed can be changed by adjusting the opening degrees of the speed adjusting valves 71 and 72. Further, when the opening angle of the door is less than 5 degrees, in addition to the flow passage in the case of the second speed, the oil passage 78a, the speed adjusting valve 7
3, the working oil on the right side of the piston 43 flows into the left side of the piston 43 via the oil passages 78, 78b.

Next, another embodiment of the present invention will be listed.

In the above embodiment, the compression coil spring 44 is used as the biasing means 13, but a tension coil spring, a torsion coil spring, a leaf spring, etc. are used.
It may be configured Te.

Further, in the above embodiment, the locking hole 52a of the lock lever 52 is provided by providing the elongated hole 57a on the side of the switching link 57 of the pivotal connecting portion of the switching arm 55 and the switching link 57. Although a clearance that can be swung to the side opposite to the roller 32 side is formed, a similar long hole is provided between the switching link 57 and the lock lever 52, and the switching link 57 itself is expandable and contractable. You may.

Further, in the above embodiment, the lock mechanism 17
The same urging means 13 is used as the urging means of 1 and the urging means for returning and rotating the main shaft 11, but the lock mechanism 1
The biasing means 7 may be separately provided.

Although the roller 32 on the movable pin 31 in the guide mechanism 16 is used as the locked portion that constitutes the lock mechanism 17, a separate portion of the pull metal fitting 14 may be used as the locked portion. However, the locked part is the roller 3
If the lock mechanism is provided in No. 2, there is an advantage that the lock mechanism can be made compact.

[0039]

According to the floor hinge of the present invention, since the guide mechanism for supporting the movable portion so as to be linearly movable is provided, mechanical loss is unlikely to occur. Further, since the link means for connecting the movable portion to the driven gear is constituted by a single link, mechanical loss is less likely to occur as compared with the case where this link means is constituted by a plurality of links.

In other words, by reducing the mechanical loss, it is possible to provide a floor hinge that has a high response and that can open and close the door smoothly.

In the floor hinge of the present invention , since the locking portion is configured to be swingable in the direction intersecting the linear movement direction of the movable portion, it is locked with the locus of the locked portion on the movable portion. The rocking loci of the parts intersect with each other, and by determining this intersecting part in the design, the locking position of the locked part, and by extension, the predetermined angle at which the main shaft should be stopped can be accurately and easily defined. Even when a lock switching mechanism or the like is provided, the influence of the design / manufacturing error of the switching mechanism on the locking position of the locked portion is very small.

That is, it is possible to provide a floor hinge capable of facilitating the design and manufacture of a mechanism for stopping the main axis of the floor hinge at a predetermined angle.

In the floor hinge of the present invention , the lock switching mechanism is provided with a switching arm pivotally supported by the case and a switching link connecting the switching arm and the lock lever, thereby simplifying the structure.

That is, it is possible to provide a floor hinge which can further reduce the manufacturing cost by further simplifying the structure of the link of the lock switching mechanism.

[0045] In the floor hinge of the invention, the guide mechanism, met movable pin connecting the link to the movable portion
Since the movable pin is provided so as to be slidable, it is possible to directly guide the connecting portion between the movable portion and the link in which the acting force direction is different, and it is possible to reduce the loss for transmitting the force. Moreover, since the locked portion is provided on the movable pin, the lock mechanism can be made compact.

In other words, by reducing the mechanical loss, it is possible to provide a floor hinge that has a high response and that can open and close the door smoothly.

[Brief description of drawings]

FIG. 1 is a plan view of a floor hinge with an upper part of a case removed.

FIG. 2 is a view showing a door supported by using a floor hinge according to the present invention.

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

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is an exploded perspective view of a lock switching mechanism.

FIG. 6 is a sectional view taken along line CC of FIG.

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

FIG. 8 is a plan view showing a state in which the lock switching mechanism is switched to a non-locking position .

FIG. 9 is an enlarged plan view of essential parts showing the relationship between the oil passage and the piston when the opening angle of the door is 90 degrees.

FIG. 10 is an enlarged plan view of an essential part showing the relationship between the oil passage and the piston when the opening angle of the door is 30 degrees.

FIG. 11 is an enlarged plan view of an essential part showing the relationship between the oil passage and the piston when the opening angle of the door is 5 degrees.

FIG. 12 is a view showing a conventional door hinge.

[Explanation of symbols]

10 ... Case 11 ... Spindle 12: driven gear 13 urging means 14 ... Movable part 15 ... Link

Claims (2)

(57) [Claims] 1. A main shaft which is supported by a case and which rotates in association with opening and closing of a door, a driven gear which meshes with the main shaft and rotates, and a biasing means which is linked to the driven gear and biases the main shaft in a door closing direction. A link hinge for connecting a movable part of the urging means, which is linked to the driven gear, to the driven gear, the floor hinge being provided with a guide mechanism for linearly movably supporting the movable part. The means is constituted by a single link, and the locked portion provided on the movable portion is pivotally supported on the case.
By locking the lock lever to the lock,
A lock mechanism for stopping at an angle is further provided, and the locking portion intersects the linear movement direction of the movable portion.
The lock lever is cut into a lockable position and a non-locking position.
A lock switching mechanism for replacement is further provided, and the lock switching mechanism is pivotally supported by the case.
Frame and this switching arm and the lock lever are connected.
Provided with a switching link that locks the lock when switching to the lockable position.
Abut the lever and lock the locking part of the lock lever
An urging means for urging the stopper is installed on the lock mechanism.
In the same state, the locking part of the lock lever is locked.
Clear run that can be swung to the side opposite to the stop side
Is provided at the connecting portion between the switching arm and the switching link.
A floor hinge characterized by that . 2. The floor hinge according to claim 1 , wherein the guide mechanism includes a movable pin that is a movable pin that connects the link to the movable part and that is slidable. Characterized by being provided on the pin.