JP2902253B2 - Safety link mechanism for elevator safety gear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety link mechanism for operating an emergency stop device of an elevator car.

[0002]

2. Description of the Related Art An emergency stop device which is one of safety devices for an elevator will be described with reference to FIGS.

A safety device for preventing a car or a counterweight from dropping when a main rope is broken in an elevator is controlled by a safety link mechanism 2 provided on a car 1, a governor 3 installed in a machine room or a hoistway. It comprises a machine rope 4, an emergency stop device 5 operated by the safety link mechanism 2, and the like.

[0004] In the safety device having such a configuration, when the speed of the car 1 is lowered and exceeds a certain prescribed speed, the governor 3 restrains the governor rope 4 connected to the safety link 2 of the car 1. By doing so, the restraining force is transmitted to the safety device 5 via the safety link 2, which operates to stop the car 1 in an emergency.

[0005] The safety link 2 has a tip connected to a governor rope 4 and pulls it to drive the governor, a rope lever 6 for operating an emergency stop device 5, a lift rod 7, Attach other levers, etc.
Further, a shaft 8 rotatably supported by the car frame, bearings 9, 9... Supporting the same on the car frame, a connecting rod 10 for interlocking the two shafts 8, 8 installed on the left and right, and preventing malfunction of the safety device. , And a coil spring 11 for restricting the movement of the link.

[0006]

In such a safety link mechanism 2, the grease applied to the bearings 9, 9,.
However, there is a problem that the force required for the governor 3 to operate the safety device 5 is abnormally increased.

The present invention has been made to address this problem. In a safety device configured to operate an emergency stop device by pulling up a governor rope, there is no deterioration such as biting or misalignment. A safety link mechanism is provided.

[0008]

In order to achieve this object, in the present invention, each bearing for supporting a shaft on a car frame is fixed via a rubber bush which is an elastic body, and one shaft is supported. The bearing bases of the two bearings are integrated.

[0009]

By interposing the rubber bush between the bearing and the bearing base in this way, even if the safety link is tilted by the force received from the governor rope, the rubber is deformed and the surface pressure between the shaft and the bearing is reduced. Therefore, the bite is eliminated.

[0010] Further, it is possible to prevent the misalignment of the bearing portion from remaining as permanent deformation.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments shown in FIGS.

A rubber bush 13 in which the bearing 9 is fitted is further fixed to a U-shaped bearing base 15 to support the shaft 8.

If the shaft 8 is supported by the bearings 9 configured as described above, the eccentricity of the shaft 8 is absorbed, the operation of the safety link is made smooth, and the reliability of the safety device is improved.

The bearing and the rubber bush may be bonded and formed in advance.

[0015]

According to the present invention, the safety link is prevented from being stuck due to the aging deterioration of the safety link and the center of the bearing is eliminated, and the reliability of the safety device is improved at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a safety link bearing according to the present invention;

FIG. 2 is a view taken along line II-II of FIG. 1,

FIG. 3 is a configuration diagram of an emergency stop device of the elevator,

FIG. 4 is a partial plan view of FIG. 3;

FIG. 5 is a partial detailed view of FIG. 3;

FIG. 6 is a view taken along line vi in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Basket 2 ... Safety link mechanism 3 ... Governor 4 ... Governor rope 5 ... Emergency stop device 6 ... Rope lever 8 ... Shaft 9 ... Bearing 13 ... Rubber bush 15 ... Bearing stand

Claims (2)

(57) [Claims] 1. A shaft fixed to the center of rotation of a rope lever for connecting an emergency stop device safety link and a governor rope to operate an emergency stop device is supported by two bearings provided on a car side. A safety link mechanism for an emergency stop device for an elevator, wherein the two bearings are respectively fixed to bearing bases via rubber bushes. 2. The safety link mechanism for an emergency stop device of an elevator according to claim 1, wherein the two bearing stands supporting the two bearings are integrally formed in a U-shape. .