CN2565125Y

CN2565125Y - Elevator door lock device

Info

Publication number: CN2565125Y
Application number: CN 02245975
Authority: CN
Inventors: 刘建英
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-13
Filing date: 2002-08-13
Publication date: 2003-08-06
Anticipated expiration: 2012-08-13

Abstract

The utility model relates to an elevator hall door locking device, belonging to locksets for buildings. The elevator hall door locking device comprises a static contact which is installed on a lock box and a movable contact piece which is installed on a lock hook, wherein, the surface of the movable contact piece is provided with a plurality of small protuberant surfaces; the whole surface of the movable contact piece is of a cylindrical surface shape of which the radius is matched with the cylindrical surface for increasing the contact area of the cylindrical surface and the static contact, wherein, the movable contact piece is made from metal materials, is embedded on insulating materials and is be fixed and connected with the lock hook. The utility model has the advantages that the contact resistance of the movable contact and the static contact is reduced for reducing a power supply voltage of a control circuit to be a safe voltage under 36V for improving the reliability of the contacts, and the utility model can automatically clear the dust and dirt on the surface of the static contact for ensuring the safe running of elevators.

Description

The hoistway door locking device

Technical field

The utility model relates to a kind of hoistway door locking device, belongs to the lockset kind of building.

Background technology

The various Rooms door lock assembly that on elevator, uses at present, PB-47 type Room door lock assembly for example, it is by the lock box that break is housed, the latch hook of contcat finger is housed and constitutes with the rubber tire of elevator door switch interlock etc.The mechanical structure of this Room door lock assembly is reliable, but its contcat finger is a writing board shape, when contacting with the break of two cylindrical shape in the lock box, contact resistance is big, thereby can only be used for the control circuit of high voltage (more than the 110V), and poor safety performance, the break surface is accumulation dust and dirt easily, make the poor reliability of its electric contact, easily initiating failure.

The utility model content

The purpose of this utility model provides a kind of simple in structure, can increase contact pressure, reduces contact resistance, can be used for the hoistway door locking device of the control circuit of safe voltage (36V), to improve electric contact performance and serviceability.

The utility model hoistway door locking device, comprise break that is contained on the lock box and the contcat finger that is contained on the latch hook, wherein said contcat finger surface has several little protrusion surfaces, and whole surface is a cylindrical shape, the radius on the face of cylinder and the face of cylinder of break match, with the contact area of increase with break.

The utility model hoistway door locking device, wherein said contcat finger is made by metal material, is embedded on the insulating material mutually, and is connected and fixed with latch hook.

The beneficial effect of the utility model hoistway door locking device is the contact resistance that reduces dynamic and static contact, makes the control circuit supply voltage be reduced to the following safe voltage of 36V, to improve contact safety.Simultaneously can remove lip-deep dust of break and dirt automatically, guarantee the safe and reliable operation of elevator.

Description of drawings

Fig. 1 is a PB-47 type hoistway door locking device structural representation;

Fig. 2 is the utility model hoistway door locking device contcat finger front view;

Fig. 3 is the A-A generalized section of Fig. 2.

Embodiment

As seen from Figure 1, the break 2 of two activities is fixed on the hoistway door track combination frame with lock box 1, and the latch hook 5 that contcat finger 3 is housed is loaded on the hoistway door by support 6.When hoistway door was opened, the contcat finger 3 on the latch hook 5 was thrown off with break 2; When hoistway door was closed, contcat finger 3 contacted with break 2, provided control signal and represented that Room door closes, and elevator will start operation.Break 2 surfaces here are the face of cylinder, and contcat finger 3 surfaces are the plane.

Fig. 2 is the utility model hoistway door locking device contcat finger 3 front views, and Fig. 3 is the A-A generalized section of Fig. 2.By Fig. 2 and Fig. 3 as seen, contcat finger 3 surfaces have several little protrusion surfaces, and whole surface is a cylindrical shape, the radius on the face of cylinder and break 2 faces of cylinder match, with the contact area of increase with break 2, increase the pressure of contact point simultaneously, reduce the contact resistance resistance, make the control circuit supply voltage be reduced to the following safe voltage of 36V.Because the surface is provided with groove, contcat finger 3 and break 2 relative fricting movements have been removed dust and dirt on the break 2 as scraping blade again, make between the contact-making surface relatively stable, contact more reliable, the assurance safe operation.

Claims

1, a kind of hoistway door locking device, comprise the break (2) that is contained on the lock box (1) and be contained in contcat finger (3) on the latch hook (5), it is characterized in that described contcat finger (3) surface has into several little protrusion surfaces, and whole surface is a cylindrical shape, and the radius on the face of cylinder and the face of cylinder of break match.

2, according to the described hoistway door locking device of claim 1, it is characterized in that described contcat finger (3) made by metal material, be embedded in mutually on the insulating material (4), and be connected and fixed with latch hook (5).