JPH0514067U - Elevator position detector - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an elevator position detector with high detection reliability, which prevents a memory switch mounted in a hoistway from malfunctioning. [Structure] A memory switch 6 is arranged at a position corresponding to the middle of each floor of a weight side guide rail 8 in a hoistway, and an external magnet 5 is arranged on the side of a car facing the memory switch 6 to detect the position of an elevator. [Effect] Even if an impact occurs when luggage or a trolley or the like gets into the car, the impact is not transmitted to the memory switch, so that a malfunction can be prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevator position detector, and more particularly to a position detector using a memory switch in which a reed switch and an auxiliary magnet are combined.

[0002]

[Prior Art]

 In a conventional position detector using a reed switch, as described in JP-A-61-287675, a memory switch and an external magnet are attached to a car and a guide rail on the side of a hoistway car.

However, in this configuration, there are many problems such as an impact when a luggage or a trolley gets into a car, which is transmitted from the car-side guide rail to the memory switch via the guide shoe, which may cause a malfunction.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, the memory switch and the magnet are fixed to the hoistway car-side guide rail and the car, respectively, and there is a problem in that a malfunction occurs due to an impact when a luggage, a trolley or the like is boarded.

A conventional example will be described with reference to FIGS. 4 and 5. An external magnet 5 is provided on the car 1, and a memory switch 6 is arranged at a position corresponding to the middle of each floor of the hoistway car-side guide rail 7. Since the memory switch 6 is arranged on the hoistway car side guide rail 7, the shock of the car is transmitted from the guide shoe 9 through the hoistway car side guide rail 7 and causes a malfunction.

An object of the present invention is to solve the above problems of the prior art and to provide a position detector of an elevator with high detection reliability.

[0007]

[Means for Solving the Problems]

 In the present invention, in order to achieve the above-mentioned object, one or more memory switches are arranged at a position corresponding to the middle of each floor of the guide rail on the weight side of the hoistway, and one or more external magnets are arranged on the car side facing the memory switch. However, it is configured to detect the position of the elevator.

[0008]

[Action]

 Even if an impact occurs in the car, the memory switch is located on the guide rail on the weight side of the hoistway, so the impact from the car is not transmitted.Therefore, it is possible to prevent malfunctions compared to the conventional technology. it can.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view of an elevator hoistway embodying the present invention, showing the relationship between an external magnet 5 attached to a car 1 and a memory switch 6.

FIG. 2 shows a sectional view of FIG.

In FIG. 2, the elevator car 1 moves up and down as the hoisting machine sheave 4 rotates and winds up the rope 3 directly connected to the counterweight 2. One or more external magnets 5 are arranged in the elevator car 1, and one or more memory switches 6 are arranged at positions corresponding to the middle of each floor of the guide rail 8 on the weight side in the hoistway.

FIG. 3 (a) is an electrical connection diagram of an embodiment of a floor position detection / display circuit, and FIG. 3 (b) is a diagram showing the positional relationship between the floor in the hoistway, the car, and the external magnet.

In FIG. 3 (a), SW 1 to SW 3 indicate storage switches 6, which are fixedly attached to respective intermediate positions of the floors 1F to 4F of the elevator hoistway, and the car 5 indicates The coil of the relay that detects and displays which floor position among the floors 1F to 4F is shown, and 1b to 3b are normally closed contacts that open when the respective relays are excited. In addition, + and-indicate terminals of the DC power source, and the external magnet 5 is integrally attached to the car 1.

In the illustrated state, the car 1 is on the third floor. Therefore, among SW1 to SW3, SW3 is in the closed state, SW2 and SW1 are in the open state, the relay is excited by the circuit of + → 1b → 2b →→ SW3 → −, and the car 1 is on the third floor. This is detected by the relay and displayed on a not-shown indicator light. At this time, the normally closed contact 3b is opened by the excitation of the relay, so that no circuits other than the circuit shown by the one-dot chain line are formed. Next, when the car 1 descends in the direction of the arrow and reaches the floor position of the second floor, SW2 is closed, which forms a circuit of + → 1b →→ SW2 → SW3 → -and the relay is repeated. When excited and detecting / displaying that the car 1 is at the second floor, the normally closed contact 2b is opened and the relay is demagnetized.

Similarly, when the car 1 descends and reaches the floor position of the first floor, SW1 switches from the open state to the closed state, and the relay is excited accordingly.

Therefore, even if an impact occurs in the car, it is not transmitted to the memory switch 6, so that a malfunction due to an impact can be prevented.

[0018]

[Effect of the device]

 According to the present invention, even if an impact occurs when a luggage or a trolley is placed in a car, the impact is not transmitted to the memory switch. Therefore, it is possible to prevent malfunction and to provide a highly reliable position detector. be able to.

[Brief description of drawings]

FIG. 1 is a plan view of an elevator hoistway according to the present invention.

FIG. 2 is a sectional view of an elevator hoistway according to the present invention.

FIG. 3 is an electrical connection diagram of a floor position detecting and displaying circuit of the present invention.

FIG. 4 is a plan view of a conventional elevator hoistway.

FIG. 5 is a cross-sectional view of a conventional elevator hoistway.

[Explanation of symbols]

1 ... Car, 2 ... Counterweight, 5 ... External magnet, 6 ... Memory switch, 7 ... Car guide rail, 8 ...
Weight side guide rail, 9 ... Guide shoe.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kei Uwa 1070 Ichimo Ichi, Katsuta-shi, Ibaraki Hitachi, Ltd. Mito Plant, Ltd. (72) Ichiya Sato 1070 Ichige Katsuta, Ibaraki Hitachi, Ltd. Mito Factory (72) Inventor Hiroshi Okawa 1070 Ige, Katsuta City, Ibaraki Prefecture Hitachi Ltd. Mito Factory

Claims (1)

[Scope of utility model registration request] 1. An integrated structure comprising one reed switch and one auxiliary magnet, and one or more external magnets arranged so as to face the structure, wherein the integrated structure is provided in a hoistway. A position detector for an elevator, wherein one or more external magnets are arranged at positions corresponding to intermediate floors of the counter rail on the counterweight side, and one or more external magnets facing the integrated structure are fixed to a car, respectively.