CN2200686Y

CN2200686Y - Automatic door lock for gravity elevator

Info

Publication number: CN2200686Y
Application number: CN 94224802
Authority: CN
Inventors: 魏庆祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-05
Filing date: 1994-08-05
Publication date: 1995-06-14
Anticipated expiration: 2004-08-05

Abstract

The utility model discloses an improved automatic door lock for elevators, which is composed of main parts such as a lock base board, a chain type lock arm, a lock case, etc., wherein, the connecting-rod type lock arm is formed by connecting a large lock arm, a small lock arm, a connecting piece and a spring. The utility model has the structural characteristics that the outer side of a bending site of the large lock arm is connected with a connecting rod provided with a gravity hammer, and the connecting rod and a lock hook form a cross-arm shape. The supporting force of a hinging fulcrum and the gravity action by the gravity hammer cause the lock hook and a lock bolt to be engaged. The utility model solves the unsafe problem caused by the failure of the spring action in the original automatic door lock for elevators.

Description

Automatic door lock for gravity elevator

The utility model belongs to Automatic door of elevator lock know-how, is to utilize the gravity parts to solve the automatic door lock of lockset auto-closing specifically.

It is automatic door lock and hook lock that the elevator special door lock of present China mainly contains two kinds.Though it is different that these two kinds of door locks are constructed, all are closures of controlling lockset by spring, in case spring failure in use just can cause the elevator door Control Failure, so that the accident that causes casualties.For this reason, national elevator quality supervision and test center is sent about: elevator door locking device on June 20th, 93 and " is limit it to carry out the notice of GB7588-87 standard, guarantee that promptly elevator in use will be perfectly safe.

The patent No. is that 9221841.3 Chinese patent discloses a kind of dual-use manual self-locking door lock of elevator (see figure 1), though having solved spring force, this lock reduces forfeiture, the problem that door lock can not reliably be locked, but because the structural form of its structural form and original automatic door lock is completely different, and the model and the dimensions of component differ, so,, certainly will change original tooling device again if will produce this lock to the lockset manufacturer of existing several years scale.Manufacturing just of this lockset can face certain difficulty thus, and producer is from the economic benefit angle, the manufacturing of this special-shaped lockset of also not too being willing to accept.At this situation, it is a kind of improved that the utility model provides, and is fit to a kind of gravity Automatic door of elevator lock that the old and new's manufacturer production is manufactured.

The automatic door lock that the utility model provides has not only kept the normalized form of original automatic door lock, but also the perfect security performance of lockset; Even the spring of lockset is in use ineffective, this lock still is in closure state in good condition, has fundamentally stopped the unsafe hidden danger of lockset.

The utility model is realized by following scheme.The closure of original automatic door lock is that the effect by spring makes latch hook and locking bolt engagement.In a single day spring force reduces or lost efficacy, just latch hook can break away from locking bolt automatically, this situation is easy to cause elevator accident as not discovered by people, and gently then elevator is malfunctioning, the careless injures and deaths of heavy then personnel.Break away from this problem of locking bolt in order to solve latch hook because of spring failure, the simplest practical again method is by lever principle, the other end at latch hook is provided with a gravity installation, is that fulcrum utilizes gravity sag to force latch hook and locking bolt permanently to mesh with the connecting axle of hammerlock and base plate.Even spring is inoperative like this, latch hook has guaranteed the function of use of door lock auto-closing thus as if being can not break away from locking bolt without stirring, and below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is the dual-use manual self-locking door lock of elevator structural representation of No. 92218431.3 Chinese patent announcements.Fig. 2 is present general automatic door lock organigram.Fig. 3 is a gravity Automatic door of elevator Lock structure schematic diagram described in the utility model.

With reference to accompanying drawing 3, the utility model is made up of door lock base plate (1) link-type hammerlock and lock box parts such as (10).Base plate (1) is gone up except that the connecting rod hammerlock is set, and also is provided with an eccentric strut (9), is used for shoring the latch hook of unlatching temporarily.Locking bolt (11) and microswitch (12) are housed in the lock box (10).The link-type hammerlock is made of brace (4) and spring (5) between big hammerlock (2), primary locking arm (3), the big primary locking arm respectively.The bending place of big hammerlock (2) is hinged on the base plate (1) by axle.Big hammerlock (1) bending place the outside install a nut and be thus connected out a connecting rod (6), this connecting rod (6) length is suitable, its end is processed with screw thread, be used for being connected with the gravity drop hammer that has the spiral joint construction (7), the weight of gravity drop hammer is selected according to instructions for use, (see that accompanying drawing (3) is that the two ends of transverse arm are respectively latch hook (8) and gravity drop hammer (7), trailing arm is positioned at below the pin joint to connect its unitary construction of big hammerlock after the moulding and be "T"-shaped shape.This hammerlock is because weight compressing, and the latch hook of hammerlock one end not be in case just can break away from locking bolt with locking bolt engagement in the lock box, thereby guaranteed the security performance of door lock.

The utility model has not only satisfied the instructions for use that national elevator quality supervision and test center is proposed through improving, and also can not influence the change of lockset drawing to elevator manufactory and applying unit, for country and enterprise have brought benefit.

Claims

1, a kind of gravity Automatic door of elevator lock is made up of base plate (1), link-type hammerlock and lock box parts such as (10); The link-type hammerlock is hinged on the base plate (1) by axle, described link-type hammerlock is to be made of brace (4) and spring (5) between big hammerlock (2), primary locking arm (3), the big primary locking arm, the outside, bending place that it is characterized in that big hammerlock (2) connects a connecting rod (6), and the end of this connecting rod (6) is connecting gravity drop hammer (7).

2, gravity Automatic door of elevator lock according to claim 1, after it is characterized in that big hammerlock (2) and connecting rod (6) being connected, its unitary construction is the T-shape shape.

3, gravity Automatic door of elevator according to claim 1 lock, it is characterized in that connecting rod (6) and hammerlock (2) greatly be connected and connecting rod (6) all is screwed connections with being connected of gravity drop hammer (7).