JPH0447093A - Torque limiter for motor-drive rotary elevating door - Google Patents

Abstract

PURPOSE:To facilitate the remodeling of a manually operated door into a motor- driven door, by fixing one end part of the shaft of a power transmission wheel to the motor-driven shaft of a rotary elevating door so that they are rotated together, and by fitting a link rod coupled to a control rod, on the other end part of the shaft. CONSTITUTION:One end part of the shaft P of a power transmission wheel G is fitted and fixed onto the motor-driven shaft of a rotary elevating door 1 disposed in a column 3 so that both shafts are rotated together. Further, a link rod L coupled to a control rod R so as to constitute a rotary reciprocating mechanism in which the attaching arm of the control rod R is variable with respect to a support arm 2 for the door 1, is fitted on the other end part of the shaft P.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to external gates for buildings, particularly garage doors.

[Conventional technology]

Electric rotating lift doors are often configured to reduce the rotation speed of the electric motor and connect it directly to the door's rotating shaft, so if an unexpected external force is applied to the door, there is a risk of damage to the transmission system.

For this reason, Japanese Patent Application Laid-Open No. 61-12238
Proposals like No. 5 have been made, but they have the drawback of having a complicated structure.

[Problem to be solved by the invention]

The technical feature of the present invention is to interpose a torque limiter suitable for a specially configured electric rotating lift door in the middle of the transmission system,
To provide an electric rotary lift door which does not cause damage to an electric transmission system even if an unexpected external force such as a child riding on the door is applied during electric operation.

[Means and Embodiments for Solving the Problems] The configuration of an embodiment of the torque limiter for an electric rotating lift door according to the present invention will be described with reference to a drawing. One end of the shaft P of the transmission wheel G is fitted and fixedly attached to the electric drive shaft of the rotary lift s1 so as to be able to rotate together with the shaft P, and the other end of the shaft P has a shaft P of the door 1. It is characterized by a link rod connected to the operating rod R that makes the mounting angle of the door 1 with respect to the support arm 2 variable during the above-mentioned ascent s1 so as to form a rotating and reciprocating mechanism. It is configured to do this. In addition, S is a disc spring for pressing the friction plate F, and T is
3 is a transmission chain, 3 is a support column, 4 is a biasing spring, and M is a motor.

[Effect]

Since the present invention has the above-described configuration, when an electric mechanism as shown in 1111 is added to a manual rotating lift door as shown in Fig. 112 to electrify it, the torque limiter can be easily installed. (Therefore, torque adjustment is also easy).

Now, to explain the operation of the manual rotary lift door shown in FIG. 2, which is the premise of the present invention, the door 1 is pivotally attached to the support arm 2 about a pivot Y, and the ends of the support arms 2 are attached to the support column 3.・
It is supported by an axis X on the top of 3. On the other hand, the door 1 and the operating lever R are pivotally connected to each other by a second pivot Z, and the other end of the operating lever R is connected to a third pivot that is transmitted from the axis X to increase the speed of rotation of the support arms 2. It is pivotally engaged with the free end of a link rod installed across W, and the relationship between the link rod and the operating rod R constitutes a known rotating and reciprocating mechanism. Therefore, when the door 1 rotates and moves up and down around the axis X, the operating rod R moves in and out, and the lower edge of the door 1 can be moved up and down without passing through a trajectory that extremely encroaches on the traffic side.

If you want to convert a manually operated rotating elevator door into an electric version after installation, you can input the electric power to the axis Therefore, the configuration of the torque limiter can be relatively simple.

In addition, the installation of the torque limiter on the pivot W can be done with the same work as the work of installing a link bar on a one-manual rotary lift door, so it can be said that it is an extremely simple work including torque adjustment. (Especially the structure of this part
(shown in enlarged view).

〔Effect of the invention〕

According to the present invention, the negative member of the torque limiter is structured in advance so that it also functions as a link bar, and the torque limiter can be easily installed at a location when converting a manual rotating lift door into an electric rotating lift door. Since the required torque is said to be less than the torque required to directly connect the rotating lift door to the rotating lift door, the configuration of the torque limiter is simple. Since its installation and torque adjustment can be done easily, it can be said to be advantageous when modifying the electric rotating lift door.

jllil is a perspective view of the main parts of an electric rotating lift door using a torque limiter, which is an embodiment of the electric rotating lift door according to the present invention, and Figure 2 is a diagram of a manual rotating lift door before being modified to an electric rotating lift door. FIG. 3 is an exploded cross-sectional view of the vicinity of the torque limiter shown in FIG. 1.

G......Transmission vehicle F・・・・・・Friction plate P・・・・・・Axis R・・・・・・・Operation lever D.......Drive shaft L... Link rod 1...1 door 2...Support arm

Claims (1)

[Claims] It consists of a transmission wheel and a friction plate that presses the transmission wheel in a plane direction, one end of the shaft of the transmission wheel is fitted and fixed to the electric drive shaft of the rotary lift door so that it can rotate together, and the other end of the shaft A link rod is fitted on the side of the door, the link rod being connected to an operating rod so as to form a rotating and reciprocating mechanism that changes the mounting angle of the door relative to the support arm while the door is being raised and lowered. Torque limiter for electric rotating lift doors.