JPH085280Y2 - Flip gate - Google Patents

Description

[Detailed description of the device] [The purpose of the device]

(Field of Industrial Application) The present invention relates to a flip-up gate that is installed at a garage, an entrance of a warehouse, and the like, and is opened and closed by vertically rotating an arm that supports the door. (Prior Art) Conventionally, as a flip-up gate as described above, a door body is provided with a five-bar link mechanism composed of three link pieces as described in Japanese Utility Model Laid-Open No. 58-190598, for example. There was a device that was able to move between a vertically lower position and a horizontally upper position. (Problems to be solved by the invention) However, in the gate described in the above publication, the door body exceeds the vertical lower position and the horizontal upper position due to the restricting piece provided on the link piece and the stopper provided on the column. The door body is maintained in a horizontal position in the upper position, but the structure such that the restriction piece, the link piece, or the pivot shaft of the link piece is easily deformed Has become. For example, the link piece 3b shown in FIG. 5 of the above publication is easily deformed by applying a force to the pivot shaft 10c at the time of rotation or rotation restriction,
Since the rotation of the link piece may be obstructed, the door may not be opened and closed smoothly, which has been a problem of this kind of flip-up gate. (Purpose of the Invention) The present invention has been made to solve the above problems of the conventional flip-up gate, and is a flip-up gate that is forcibly excellent, has few failures, and can be smoothly opened and closed forever. Is intended to provide.

[Constitution of device]

(Means for Solving the Problem) The present invention provides a pivotal connection between an upper arm that pivots around a base end pivotally attached to a column and pivotally attaches a door to the other end, and the upper arm of the door. A lower arm whose one end is pivotally attached to a lower position of the section, and a link whose one end is pivotally attached to the base of the strut or the upper arm and the other end is pivotally attached to the other end of the lower arm. The base end of the upper arm is provided with a support portion that abuts the link in a state where the upper arm is rotated by a certain angle and rotates the link around a pivotal axis of the link or the base end of the upper arm. It is characterized in that the structure of such a flip-up gate is used as a means for solving the above-mentioned conventional problems. (Operation) In the flip-up gate according to the present invention, the upper arm having the other end pivotally attached to the door has its base end pivotally attached to the column, and the base end pivots the upper arm by a certain angle. In this state, a support portion is provided that abuts on the link and rotates the link about the pivot shaft at one end thereof. The link is
In the case of a strut, one end is pivotally attached to the base end portion and the other end is pivotally attached to the other end of the lower arm which is pivotally attached to a position below the pivotal attachment portion of the door to the upper arm. There is. Therefore, when the door is lifted, the upper arm is rotated by a certain angle and the support portion provided at the base end thereof abuts the link, and then the support portion supports the link to support the link or the pillar. Rotate together with the upper arm about a pivotal axis with the base end of the upper arm, and push up the door upward via the lower arm that connects the other end of the link and the door, The door is held in a horizontal position in the fully opened state. Thus, in the flip-up gate according to the present invention,
In the fully opened state, the link is rotated within a predetermined range to hold the door in a horizontal position by the support portion provided at the base end portion of the upper arm pivotally attached to the support column, which is structurally stable. Since the rotation of the upper arm due to the rise of the door is smoothly transmitted to the link and the lower arm, the load applied to the link and the arm and the pivot shafts thereof is small, and the flip-up gate has few failures. ing. (Embodiment) An embodiment of the present invention will be specifically described below with reference to the drawings. 1 to 3 illustrate one embodiment of the flip-up gate according to the present invention, and FIG. 1 shows its closed state and fully open state by solid lines and phantom lines, respectively. The flip-up gate 1 shown in FIG. 1 has an upper arm 3 having a base end 3a pivotally attached to a column 2 and the other end pivotally attached near the upper end of the door 4 in this embodiment, and the door 4 described above. A lower arm 5 having one end pivotally attached to the vicinity of a central portion, which is a lower position of a pivotal attachment portion with the upper arm 3, and one end coaxially with the base end 3a of the upper arm 3 and the other end in this embodiment. Links 6 pivotally attached to the other end of the lower arm 5 are provided. As shown in FIG. 2, the base end portion 3a of the upper arm 3 has a left end of the link 6 in the drawing when the upper arm 3 is rotated about 60 ° from the closed state in this embodiment. A support portion 3b that comes into contact with the surface and a contact portion 3c that comes into contact with the right side surface of the link 6 in the drawing when the door 4 is closed are provided. Further, in this embodiment, the pillar 2 is provided with a stopper 2a that abuts on the left side surface of the link 6 when the door 4 is closed, and the door in the closed state is cooperated with the abutting portion 3c of the base end 3a. The movement of 4 is regulated and the vertical posture is maintained. Further, the column 2 is provided with a stopper 2b that comes into contact with the upper arm 3 when the door 4 is fully opened, and prevents further rotation and holds the door 4 in an open state. When the lower end of the door 4 is lifted to open the flip-up gate 1 having the above structure, the upper arm 3 pivotally attached to the door 4 moves counterclockwise in the figure around the base end 3a thereof. When the door 4 is rotated to a predetermined height and the upper arm 3 is rotated about 60 °, the support portion 3b provided at the base end portion 3a of the upper arm 3 has a left side surface of the link 6 in the figure. Come into contact with. FIG. 3 shows this state, and when the door 4 is further raised, the supporting portion 3b pushes up the link 6 to rotate the link 6 together with the upper arm 3, so that the link 6 and the lower arm 5 are While keeping the positional relationship shown in FIG. 3, the base 4 is rotated counterclockwise in the figure together with the upper arm 3 about the pivot axis of the base end 3a to the support column 2 to move the door 4 to the first position. The door 4 can be held horizontally by opening to the position shown by the phantom line in the figure. As described above, in the flip-up gate 1 of this embodiment, the base end 3a of the upper arm 3 is provided with the support portion 3b for keeping the door 4 in the horizontal position at the fully opened position of the door 4. Since the structure is such that an unreasonable force is not applied to the link, the arm, and the pivotally connected portion, there are few failures, and the opening and closing can be smoothly performed forever. In the above-described embodiment, one end of the link 6 is pivotally mounted coaxially with the pivot end of the base end 3a of the upper arm 3 to the support column 2. However, in the flip-up gate according to the present invention, ,
The link 6 does not necessarily have to be coaxial, and the link 6 exists on the rotation locus of the support portion 3b due to the rotation of the upper arm 3, and the support portion 3b abuts on the link 6 to move the link 6 to the upper arm 3 As long as the structure can be rotated together with the link 6,
It does not matter whether one end of the shaft is pivotally attached to the base end portion 3a or directly to the support column 2. Further, the stopper 2a provided on the column 2 in the above embodiment
Is removed to enable the clockwise rotation of the link 6 in the figure, so that the door 4 is lifted by its own weight while maintaining the vertical posture until the support portion 3b abuts on the link 6. Therefore, it is possible to reduce the amount of frontward protrusion of the door 4 when opening and closing.

[Effect of device]

As described above, the flip-up gate according to the present invention is
An upper arm that pivots around a base end that is pivotally attached to a column, and an upper arm that pivotally attaches a door to the other end, and a lower arm that has one end pivotally attached to a lower position of a pivotal attachment portion of the upper arm of the door. And a link whose one end is pivotally attached to the column or the base end of the upper arm and the other end is pivotally attached to the other end of the lower arm. Since a support portion for contacting the link and rotating the link around a pivotal axis of the support column or the base end portion of the upper arm is provided at the base end portion of the upper arm, a failure occurs. There is little, and it exhibits an excellent effect that it can be opened and closed smoothly forever.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a closed and fully opened state of an embodiment of a flip-up gate according to the present invention, FIG. 2 is an enlarged perspective view for explaining a structure of a base end portion and a support portion of FIG. The figure is first
It is explanatory drawing which shows the opening process of a figure. DESCRIPTION OF SYMBOLS 1 ... Bounce gate, 2 ... Support post, 3 ... Upper arm, 3a ... Base end part, 3b ... Support part, 4 ... Door, 5 ... Lower arm, 6 ... Link.

Claims (1)

[Scope of utility model registration request] 1. An upper arm that pivots around a base end pivotally attached to a column and pivotally attaches a door to the other end, and one end pivoted to a position below the pivotal attachment portion of the upper arm of the door. A lower arm attached thereto, and a link having one end pivotally attached to the column or the base end of the upper arm and the other end pivotally attached to the other end of the lower arm, and the upper arm has a constant angle. A support portion is provided at the base end portion of the upper arm so as to contact the link in a rotated state and rotate the link around a pivotal axis of the post or the base end portion of the upper arm. A flip-up gate.