JPH0513914Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flip-up gate suitable for use at the entrance/exit of a garage, for example.

[Conventional technology]

Conventionally, as shown in FIG. 6, a gate using, for example, a gas-filled damper is known.

As shown in the figure, this gate has a support arm b pivotally attached to a column a, so that the gate body f can be rotatably opened and closed in the direction of the arrow d←→d' shown in the figure, and each end of the gas-filled damper e is attached. are rotatably pivotally connected to the support column a and the support arm b, respectively, and
Expands and contracts the gas-filled damper e by opening and closing the
This is a buffered structure.

However, since the relationship between the opening/closing angle (rotation angle) of the gate body f when using the gas-filled damper e and the lift force at the tip of the gate body is given by the curve g shown in FIG. As is clear from the curve g, the lift force is positive when the rotation angle (opening/closing angle) of the gate body f is between 90° and θ°, so the gate body f is buffered and closes gently, but when the rotation angle is 0 Since the lift force is negative between ° and θ°, the gate body f closes abruptly, which is dangerous.

Here, the above θ° is approximately 20°, although it varies depending on the mounting position of the gas-filled damper and the temperature.

In addition, the force of the gas-filled damper has a characteristic that it is large at high temperatures and small at low temperatures.
There is a problem in that the gate body f tends to fall easily, especially when the power is weakened in winter or when it is blown by strong winds, resulting in safety concerns.

[Problem that the invention attempts to solve]

The present invention is an attempt to solve the above-mentioned problems of conventional flip-up gates that use spring-type or gas-filled dampers, for example, by fixing a cam to the support column and using a spring to provide elasticity to the cam. By rotatably supporting a rotating body having a biased slider and connecting the gate body to the rotating body, when the gate body is flipped up, the engagement recess of the cam The elastic engagement of the slider provides rotational resistance, which prevents the gate body from falling during the winter or strong winds when the force of the gas-filled damper is weakened. The purpose of this is to buffer the fall of the gate body when it is closed by elastic contact between the protruding inclined surface of the cam and the slider so that the gate body can be closed safely.

[Means for solving problems]

That is, the present invention provides a flip-up gate in which the gate body is rotatably attached to a support post and buffered by a damper, in which the support metal fittings include two engagement protrusions provided at appropriate angles in the circumferential direction; A rotating body having a slider biased by a spring toward the center of rotation and rotatably attached to a fixed shaft supported by the pillar, both of the engaging protrusions, the slider, and the gate. Two protrusions protruding radially from the outer peripheral surface in correspondence with the rotation angle of the main body, an engagement recess formed at the top of one of the protrusions, and inclined portions of the two protrusions facing each other in the circumferential direction. and a cam fixed to the fixed shaft, each having a protruding inclined surface, and fixed to the rotary body of the support fitting to the gate main body, and both engagement protrusions 11 of the rotary body 11
b, 11c, the slider 17, both protrusions 12b, 12c, and the engaging recess 12d of the cam 12, when the gate body is in the lowered position, one engaging protrusion 11b and the engaging recess 12d are provided. side protrusion 12
b is in contact with the slider 1, and the other protrusion 12c is in contact with the slider 1.
7 to compress the spring 19, and in the raised position of the gate body, the other engaging protrusion 11c and the other protrusion 12
c is in contact with the slider 17 and the engaging recess 12d.
The above-mentioned problem was solved by configuring it so that it engaged in a resilient manner.

[Effect]

In the flip-up gate according to the present invention, when the flipped-up gate body rotates and descends, the protruding inclined surface of the cam comes into elastic contact with the slider, compressing the spring and buffering the gate body from falling.

When the gate body is in a lowered state (closed state), the protrusion of the cam on which the engagement recess is provided comes into contact with the engagement protrusion of one of the rotating bodies, thereby preventing further rotation.

Also, the state where the gate body is raised (open state)
Then, the other protrusion of the cam and the other engagement protrusion of the rotating body come into contact, preventing further rotation, and the slider elastically engages with the engagement recess of the cam, so that the gate body When the gate body attempts to descend, the side surface of the engagement recess and the slider engage and interfere, creating rotational resistance, thereby preventing the gate body from falling.

〔Example〕

Embodiments of the present invention will be described below in detail based on the drawings. As shown in FIGS. 4 and 5, the gate main body 1 includes pillars 3,
3, it can be freely rotated (opened and closed) at any angle (90° in the illustrated example) with a supporting metal fitting 4 (described later), and one end of the gas-filled damper 5 is supported by the pillar 3, and the other end is supported by the gate body 1. They are attached to the arm 6 by pivoting 7 and 8, respectively.

The support fitting 4 is formed as follows.
As shown in FIGS. 1 to 3, the fixed shaft 9
, the bracket 10 , the rotating body 11 , and the cam 12
is formed as the main component.

The fixed shaft 9 has a circular shaft portion 9a having a perfectly circular cross section.
A corner shaft part 9b having an arbitrary polygonal cross section at its tip and a corner shaft part 9b having an arbitrary polygonal cross section at its base end with a narrow end. A tapered portion 9c is integrally provided, and a threaded rod 9d is integrally and concentrically provided at the tip of the square tapered portion 9c.

Approximately at the center of the front surface of the bracket 10, there is a square tapered hole 10a that fits with the square taper part 9c.
After the square taper part 9c of the square taper hole 10a is fitted from the front, a washer 13 and a disc spring 14 are interposed on the threaded rod 9d protruding from the back side of the bracket 10, and then a nut 15 is inserted. By screwing the fixed shaft 9 into the bracket 1,
Fixed to 0.

Further, a shaft hole 11a is provided through the upper part of the rotary body 11, and by fitting the shaft hole 11a and the circular shaft portion 9a through the bearing 16, the rotary body 11 can be rotated as described above. It is rotatably supported by a fixed shaft 9.

On the front surface of the rotary body 11, two engaging protrusions 11b and 11c for regulating the rotation of the rotary body 11 are located at a suitable distance in the radial direction from the center of rotation and have a suitable angle in the circumferential direction. In addition to the
At the bottom of the front surface, there is a through hole 1 having an opening at one end at a position radially separated from the center of rotation by an appropriate distance.
1d is opened toward the rotation center direction, and a spherical slider 17 is inserted into the holder 18 in the through hole 11d.
is interposed between the holder 18 and a spring receiver 20 screwed into the lower screw hole 11e of the through hole 11d, and is elastically biased toward the center of rotation by a spring 19 housed in the through hole 11d. The interior has been decorated.

On the other hand, the cam 12 is provided in the shape of a thick disk, and a square hole 12a that fits the square shaft portion 9b passes through the center of the cam 12, and the square hole 12a and the square shaft portion 9b are connected. After mating, attach 2 washers to the front.
1. The cam 12 is fixed to the fixed shaft 9 by screwing a bolt 23 into a threaded hole 9e drilled in the center of the front end of the fixed shaft 9 with the disc spring 22 interposed.

Further, from the outer peripheral surface 12g of the cam 12, two protrusions 12b and 12c protrude in the radial direction,
The protrusions 12b and 12c are provided at an appropriate angle in the circumferential direction, and an engagement recess 12d is provided in the radial direction at the top of one of the protrusions 12b. The part is each protrusion 12
They are formed into protruding inclined surfaces 12e and 12f that slope downward from the tops of the cams b and 12c to the outer circumferential surface 12g of the cam 12.

Here, both engaging protrusions 11b of the rotating body 11,
11c and the slider 17, and the protrusions 12b, 12c and the engaging recess 12d of the cam 12, when the gate main body 1 is attached with the support fitting 4 as described later, as shown in FIG. In the shown lowered position (closed position) of the gate main body 1, one of the engagement protrusions 11b of the rotating body 11 and the protrusion 12b of the cam 12 provided with the engagement recess 12d are in contact with each other, and the other protrusion 12c contacts and presses the slider 17 to compress the spring 19, and in the raised position (open position) of the gate body 1 shown in FIG.
The respective positions are set in advance so that the other engagement protrusion 11c and the other protrusion 12c are in contact with each other, and the slider 17 and the engagement recess 12d are resiliently engaged.

Also, here, the bracket 10 is attached to the mounting plate 24.
Since it is fixed to the above-mentioned support 3 through the
The mounting plate 24 is provided with a hole 24a into which the threaded rod 9d of the fixed shaft 9 is fitted, so that the mounting position of the bracket 10 can be adjusted with respect to the mounting plate 24, which is fixed with screws or the like. , screw holes 24b, 24b for fixing the bracket 10 with bolts 25, 25 are provided at the upper and lower parts, respectively.

On the other hand, the screw hole 24 of the bracket 10
At positions corresponding to b and 24b, arc-shaped elongated holes 10b and 10 centered on the square tapered hole 10a are provided.
b is provided, and on the back surface thereof and the opposing surface of the mounting plate 24, radially uneven grooves 10c, 24c are provided.
are provided, and the bracket 10 and the mounting plate 24 are fixed with the bolts 25, 25 by fitting the uneven strips 10c, 24c so as to be detachable and mutually adjustable in their mounting position and direction.

Thus, by fixing the mounting plate 24 of the support fitting 4 configured as described above to the column 3, the bracket 10 and the fixed shaft 9 are fixed to the column 3, and on the other hand, the support arm 6 of the gate body 1 is screwed onto the rotating body 11. The gate body 1 is attached to the pillars 3 and 3 by fixing with a stopper or the like as shown in FIGS. 4 and 5.

Therefore, when the gate body 1 is lowered (closed), the rotating body 11 and the cam 12 are in the second position.
With the positional relationship shown in the figure, when the gate body 1 is pushed up, the rotating body 11 rotates counterclockwise in FIG. When they come into contact due to extension and the gate body 1 is lifted up close to its upper limit, the slider 17 is pushed in while compressing the spring 19 by the other protruding inclined surface 12e.
When the slider 17 coincides with the engagement recess 12d, it is pushed out by the spring force and is elastically fitted into the engagement recess 12d as shown in FIG. 3, and the gate 1 is shown by the two-dot chain line in FIG. In this position, the side surface 12h of the engagement recess 12d
Since the rotating body 11 is subjected to the rotational resistance caused by interference between the slider 17 and the slider 17 and the compressive resistance of the gas-filled damper 5, the gate body 1 is held in the raised position and does not fall.

At this time, the gas-filled damper 5 expands. Next, when the gate body 1 is pulled down in the downward direction from the raised position, the slider 17 moves into the engagement recess 1 against the spring force.
2d, the gate body 1 is cushioned by the compression of the gas-filled damper 5, and gradually descends, and just before the lift force at the tip of the gate body changes from positive to negative, the protrusion inclined surface 12f comes into contact with the slider 17, Compressing the spring 19 cushions the gate body 1 from falling due to the compression resistance of the gas-filled damper 5, so that the gate body 1 gently descends to its lower limit and closes.

Further, at the lower limit of the gate body 1, the protrusion 12b comes into contact with the engagement protrusion 11b, as shown in FIG. 2, and prevents further rotation.

[Effect of idea]

As explained above, since the flip-up gate according to the present invention is configured, in the one using the gas-filled damper 5, the cam 12 The protruding inclined surface 12f of the slider 1 is biased by a spring force.
7 and compresses the spring 19, which buffers the gate body 1 from falling.
It can be closed safely by making it gentle, and at the upper limit of the gate body 1, the engagement recess 1 of the cam 12
The slider 17 of the rotating body 11 is elastically engaged with the rotating body 2d by the spring force and provides rotational resistance to the rotating body 11, so that the gas-filled damper 5
It is possible to prevent the gate body 1 from falling when the force becomes weak or when it is exposed to strong winds, and furthermore, at the upper and lower limits of the gate body 1, the rotating body
and the engaging protrusion of the cam 12 and the protrusions 11c and 12c, 1
Since rotation of the gate body 1 is prevented by abutting 1b and 12b, the gate body 1 can be reliably held in the open position and the closed position.

[Brief explanation of drawings]

Fig. 1 is a vertical side view of the support fitting in an embodiment of the flip-up gate according to the present invention, Fig. 2 is a front view of the support fitting in the lowered state of the gate body, and Fig. 3 is the gate body of the support fitting in the raised state. 4 and 5 are front and side views of the same embodiment; FIG. 6 is a side view of a conventional flip-up gate; and FIG. 7 is a gate of a gas-filled damper. It is a graph showing the relationship between the lift force at the tip of the main body and the rotation angle of the gate main body. 1...Gate body, 3...Strut, 4...Supporting metal fittings, 5...Gas-filled damper, 9...Fixed shaft,
11... Rotating body, 11b, 11c... Engaging protrusion,
12...Cam, 12b, 12c...Protrusion, 12d
...Engagement recess, 12e, 12f...Protrusion inclined surface,
17...Slider, 19...Spring.

Claims (1)

[Scope of utility model registration request] In a flip-up gate in which a gate body 1 is rotatably attached to a support post 3 and buffered by a damper 5, a support fitting 4 is provided with two engagement protrusions 11b provided at appropriate angles in the circumferential direction. 11c
and a rotary body 11 rotatably attached to a fixed shaft 9 supported by the pillar and having a slider 17 biased toward the center of rotation by a spring 19; Two protrusions 12b and 12c protrude in the radial direction from the outer peripheral surface in correspondence with the rotation angle of the slider and the gate main body, an engagement recess 12d recessed in the top of one of the protrusions, and both of the protrusions mentioned above. and a cam 12 fixed to the fixed shaft and having protruding inclined surfaces 12e and 12f formed on inclined circumferentially opposing portions, respectively, and a gate main body fixed to the rotating body of the support fitting, The rotating body 1
Both engaging protrusions 11b and 11c of 1 and slider 17
The two protrusions 12b, 12c and the engaging recess 12d of the cam 12 are the same as the engaging protrusion 11b and the engaging recess 12 when the gate body is in the lowered position.
The protrusion 12d provided with d contacts the slider 17, and the other protrusion 12c contacts and presses the slider 17, causing the spring 1
9 is compressed, and in the raised position of the gate main body, the other engagement protrusion 11c and the other protrusion 12c are in contact with each other, and the slider 17 and the engagement recess 12d are elastic. A flip-up gate characterized in that it is adapted to engage.