JP2016011179A - Door opening travel arrester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door opening travel arrester which does not require components to be installed onto a guide rail, and can suppress an impact given to a car even if the car travels in the door-opened state, and of which an occupied space can be reduced.SOLUTION: A door opening travel arrester according to the present invention is provided on an elevator which is equipped with a car 2 vertically elevating in a hoistway 1, and a guide part 5 having a slidable material 4 which is provided upright in the hoistway 1 and slidably contacts the guide rail 3. The arrester includes a brake part which contacts the guide rail 3 and brakes the car 2, and is so configured tat the brake part 6 is provided on the guide part 5. The brake part 6 has a contact part 7 which projects from a surface 4a of the slidable material 4 of the guide part 5 during each floor stop of the car 2 and contacts a rail part 3a of the guide rail 3.

Description

  The present invention relates to a door-opening travel prevention device for preventing an elevator car from traveling with a door open.

  In general, the elevator is controlled so that the braking device is operated by the control device so that the car does not travel when the car is landed on the departure floor or the arrival floor and the door of the car is opened. However, there is a risk that the vehicle will run with the car door open due to some factor, such as a decrease in the holding power of the braking device or an erroneous command from the control device. If such a situation occurs, a great deal of labor and time will be spent on the restoration, and the elevator cannot be moved for a long time, causing trouble for the elevator user.

  Patent Document 1 discloses a door-open travel prevention device that prevents the occurrence of such a situation. This prior art has a configuration in which a stopper having a slope that is wide in the vertical direction is provided near the top and bottom of the car stop position of the car guide rail, and a braking arm that can be engaged with the stopper is arranged on the car side. is there. In this prior art, when the car is about to run with the car door open, the car-side braking arm is protruded and engaged with the stopper, thereby braking the car. Is.

JP 2013-86933 A

  In the above-described conventional technology, it is necessary to provide a stopper in each portion of the guide rail at each floor stop position of the car, so that the number of parts is large and the manufacturing cost tends to be high. There is also a problem that the number of installation work steps increases.

  For some reason, when the car travels with the door open, the braking arm collides with the stopper, and the impact at this time is transmitted to the car. Therefore, when a user is present in the car, an impact is transmitted to the user.

  Further, it is necessary to provide a control arm or the like separately from the guide portion or the like having a sliding contact material that is in sliding contact with the guide rail, and the occupied space becomes large. Therefore, the installation is likely to be difficult when the space occupied by the installation of the car is restricted.

  The present invention has been made based on the above-described actual situation in the prior art, and its purpose is to eliminate the need for installation parts on the guide rail, and also when the car runs with the door open. It is an object of the present invention to provide a door-opening travel prevention device that can suppress an impact on the vehicle and that can reduce an occupied space.

  In order to achieve the object, a door-opening travel prevention device according to the present invention is installed in the hoistway in a vertical direction, and guides the car in the vertical direction. The elevator is provided in an elevator provided with a guide rail and a guide portion having a sliding material that is installed on the passenger car and is in sliding contact with the guide rail, and the passenger door when the passenger door is kept open. In the door-opening travel prevention device for preventing the car from traveling, the door opening travel prevention device includes a braking unit that abuts on the guide rail and brakes the car, and the braking unit is provided in the guide unit.

  Since the door-opening travel prevention device according to the present invention is provided in the guide portion of the car, no installation parts for the guide rail are required. Therefore, it is not necessary to provide a conventional stopper or the like at each part of the guide rail at the stop position of each floor of the car, so that the number of parts can be reduced and the manufacturing cost can be reduced as compared with the conventional case. Further, the present invention can reduce the number of installation work steps, and the manufacturing cost can be reduced also in this respect.

  In addition, the present invention can suppress the impact given to the car because the braking part and the sliding material are kept in sliding contact with the guide rail even when the car is about to run with the car open. it can. Therefore, even when a user is present in the car, the impact transmitted to the user can be reduced.

  Further, since the present invention is provided in the guide portion, the occupied space can be kept small. Therefore, even when the space occupied by the installation of the car is restricted, it can be installed easily, and excellent versatility can be ensured.

It is a side view which shows the principal part structure of the elevator provided with one Embodiment of the door open travel prevention apparatus which concerns on this invention. It is a perspective view which shows the principal part structure of the door open travel prevention apparatus which concerns on this embodiment. It is an AA cross-sectional enlarged view of FIG. It is the figure drawn corresponding to FIG. 3, and is a cross-sectional view which shows the state of this embodiment when a passenger car stops on each floor.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a door-opening travel prevention device according to the present invention will be described based on the drawings.

  As shown in FIG. 1, an elevator provided with an embodiment of the door-opening travel prevention device according to the present invention is installed in a vertical direction in a hoistway 1 and a car 2 that runs in the hoistway 1. And a guide rail 3 for guiding the car 2 in the vertical direction. The elevator includes a rope 10 that is connected to the car 1 and a counterweight (not shown) and is wound around a hoisting machine (not shown).

  Brackets 11 are attached to the upper portion and the lower portion of the car 1, and a guide portion 5 having a sliding member 4 described later that is in sliding contact with the guide rail 3 is held by these brackets 11.

  As shown in FIGS. 2 and 4, the door-open travel prevention device according to this embodiment provided in the elevator shown in FIG. 1 includes a braking portion 6 that abuts against the guide rail 3 and brakes the car 2. The brake unit 6 is provided in the guide unit 4.

  The braking portion 6 has a contact portion 7 that protrudes from the surface 4 a of the sliding member 4 of the guide portion 5 and contacts the guide rail 3 when the car 2 is stopped on each floor. The braking portion 6 keeps the abutment portion 7 from protruding from the surface 4 a of the sliding member 4 of the guide portion 5 while the car 2 is traveling.

  The braking portion 6 moves the contact portion 7 in a direction away from the guide rail 3 against an urging force of the elastic member such as a spring that urges the contact portion 7 against the guide rail 3. Includes electromagnetic solenoid.

  The sliding member 4 of the guide portion 5 has a through hole portion 4b that allows the contact portion 7 of the braking portion 6 to move.

  In addition, the surface portion of the contact portion 7 of the braking portion 6 that faces the guide rail 3 is provided with a friction force increasing portion 7 a that increases the friction force with the guide rail 3. The frictional force enhancing portion 7a is hardened and includes, for example, a plurality of grooves formed in the lateral direction. A plurality of grooves formed in an oblique direction may be provided instead of the lateral grooves. Further, the frictional force enhancing portion 7a may be a material whose surface is roughened by sandblasting or the like. Further, a fiber, particle, or the like made of steel, aramid, non-ferrous metal, mineral, ceramic or a mixture thereof may be provided on the surface portion of the contact portion 7 that faces the guide rail 3.

  When the abutting portion 7 of the braking portion 6 abuts on the guide rail 3, the frictional force increasing portion 7 a of the abutting portion 7 comes into contact with the guide rail 3, so that the car 2 is about to travel. The frictional force with the guide rail 3 can be increased, and a large braking force against the traveling of the car 2 can be ensured.

  The guide rail 3 includes a rail portion 3a with which the sliding member 4 of the guide portion 5 is slidably contacted, and a fixed portion 3b which is connected to the rail portion 3a and is fixed to a predetermined portion in the hoistway 1 for braking. The contact portion 7 of the portion 6 is provided so as to be able to contact the rail portion 3 a of the guide rail 3.

  Next, the operation of the door-opening travel prevention device according to this embodiment configured as described above will be described.

  While the car 2 is running, as shown in FIGS. 1 and 3, an electromagnetic solenoid (not shown) of the braking unit 6 is attracted by a signal corresponding to a door open state output from a control device (not shown). The abutting portion 7 is kept from protruding from the surface 4 a of the sliding member 4 against the urging force of the elastic member that does not, and the surface 4 a of the sliding member 4 contacts the rail portion 3 a of the guide rail 3. As a result, the car 2 can run smoothly.

  When the car 2 stops on each floor, the door is opened according to a signal output from a control device (not shown). At this time, the braking unit is activated by a signal according to the door open state output from the control device. 6 is released, and the contact portion 7 projects from the surface 4a of the sliding member 4 as shown in FIG. 4 by the biasing force of the elastic member (not shown). Thereby, the frictional force increasing portion 7 a of the contact portion 7 comes into contact with the rail portion 3 a of the guide rail 3.

  Therefore, when the car 2 stopped on each floor is going to travel with the door open for some reason, the friction force increasing portion 7a of the abutting portion 7 of the braking portion 6 prevents the car 2 from traveling. A large braking force can be secured, which contributes to preventing the car 2 from traveling open.

  According to the door-opening travel prevention device according to the present embodiment configured as described above, since it is provided on the guide portion 5 of the car 2, no installation parts for the guide rail 3 are required. Therefore, it is not necessary to provide a stopper or the like in each portion of the guide rail 3 at each floor stop position of the car 2, so that the number of parts can be reduced and the manufacturing cost can be reduced. Further, the present embodiment can reduce the number of installation work steps, and the manufacturing cost can be reduced in this respect.

  Further, in the present embodiment, even when the car 2 is about to run with the car 2 open, the frictional force increasing portion 7a of the abutting portion 7 of the braking portion 6 and the surface 4a of the sliding member 4 are provided on the guide rail 3. Since the rail portion 3a is kept in sliding contact with the rail portion 3a, the impact applied to the car 2 can be suppressed. Therefore, even when a user exists in the car 2, the impact transmitted to the user can be reduced.

  Moreover, since this embodiment was provided in the guide part 5, an occupation space can be restrained small. Therefore, even when the space occupied by the installation of the car 2 is restricted, it can be easily installed, and excellent versatility can be ensured.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Guide rail 3a Rail part 3b Fixing part 4 Sliding material 4a Surface 4b Through-hole part 5 Guide part 6 Braking part 7 Contact part 7a Friction force reinforcement part

Claims (5)

A car that travels in the vertical direction in the hoistway, a guide rail that is erected in the hoistway and guides the car in the vertical direction, and a slide that is installed in the car and is in sliding contact with the guide rail A door opening travel prevention device that is provided in an elevator including a guide portion having a material and prevents the car from traveling when the door of the car is kept open;
A braking portion that abuts against the guide rail and brakes the car;
The door opening travel prevention device, wherein the braking portion is provided in the guide portion. In the door opening travel prevention device according to claim 1,
The braking portion has a contact portion that protrudes from the surface of the sliding member of the guide rail when the floor of the car is stopped and contacts the guide rail. A door opening travel prevention device characterized in that a part is kept from protruding from the surface of the sliding member of the guide part. In the door opening travel prevention device according to claim 2,
The door-opening travel prevention device, wherein the sliding member of the braking part has a through-hole part that allows the contact part of the braking part to move. In the door opening travel prevention device according to claim 2,
A door opening travel prevention device comprising a frictional force increasing portion for increasing a frictional force with the guide rail on a surface portion of the contact portion of the braking portion facing the guide rail. In the door-opening travel prevention device according to any one of claims 1 to 4,
The guide rail includes a rail portion that the sliding member of the guide portion is in sliding contact with, and a fixing portion that is connected to the rail portion and is fixed to a predetermined portion in the hoistway.
The door opening travel prevention device characterized in that the contact portion of the braking portion is provided so as to be able to contact the rail portion of the guide rail.