FI67910B - DOERRLAOS - Google Patents

Description

ANNOUNCEMENT ^ 7910

6 11 UTLÄG G NIN G SSKRI FT O / s I U

c (45) Patent ny3nr.ilty 10 06 1935 Patent neddelat ^ (51) Kv.lk. * / lnt.CI. * E 05 B 63/16 FINLAND —FINLAND (21) Patent application - Patentansökning 752638 (22) Application date - Ansökningsdag 22 09 75 (H) (23) Starting date - Giltighetsdag ^ 2 09 75 (41) Made public - Blivit offentlig Q3 77

National Board of Patents and Registration Date of publication and publication. - _ _

Patent- och registerstyrelsen '' Ansökan utlagd och utl.skriften publlcerad 2o .02.05 (32) (33) (31) Requested priority - Begärd priority (71) Oy Wärtsilä Ab, Värtsilä, Fl; Patent Department, Sörnäisten rantatie 9 "11, 00530 Helsinki 53, Finland-Finland (Fl) (72) Terho Kontkanen, Rymättylä, Finland-Finland (FI) (5A) Door lock - Dörrläs

The invention relates to a door lock according to the preamble of claim 1.

In known locks with two drive shafts, the rear locking is arranged by using two separate locking plates and springs or a pivoting locking plate attached to the latch itself for moving them. The reliability and / or strength of either type of solution is not of the highest order.

The object of the invention is to further simplify the structure of the door lock and to verify its operation by using forced control for rear locking instead of spring action and a fixed attachment point for the locking plate. The features of the invention appear from claim 1. This structure provides a simple, reliable and strong door lock.

The control of the movements of the locking plate is made simple when the locking plate is rotatably mounted. The bearing can advantageously take place on a pin acting as a bogie stop or on a similar fixed member.

2,67910

The guide surfaces of the transmission member can be two cams, one of which is arranged to act on the beam and the other on the locking plate. In this case, in addition to the rear locking function, the latter cam can be arranged to keep the locking plate in the free position at the initial stage of the movement towards the bogie lock at least until the bogie abutment surface has passed the locking plate stop surfaces. This prevents the locking plate from moving unintentionally to the rear locking position.

The lock can be provided with spring members acting on the transmission members, which have a steering effect directed towards the normal position of the transmission members and which at the same time can limit the movement in the locking direction of the transmission members. This makes the movements of the transmission elements in different situations better controlled. The spring member can be a flat spring placed over the lock housing, which, due to its simplicity and convenience, is particularly suitable for the purpose. As an alternative, a compression spring can be used, in which case, for example, a spring guide made of plastic is required, the arm or the like of which can act as a limiter for movement in the locking direction of the transmission members.

From the point of view of installation and from a technical point of view, it is advantageous for the lock to be substantially symmetrical about the longitudinal axis of the bogie. The symmetry of the lock also reduces the required stock assortment.

The invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 shows the lock in its normal position and Figure 2 shows the lock in its rear locking position.

In the drawings, 1 denotes a bogie, 2 bogie springs and 3 locking plates rotatably mounted on the bogie stop pin 4. The number 5 refers to the stop surface of the locking plate and 6 to the abutment surface on the bogie. Numeral 7 denotes the transmission member 8 and 9 with its cam and 10 its guide springs having a guiding and limiting effect on the transmission members.

ti 3 67910

The rear locking of the lock is effected by turning either of the transmission members 7 in the opposite direction to the opening direction of the bogie 1 by means of a knob or button, not shown, the locking plate 3 rotates around the pin 4 by the cam 8 used for rear locking so that one of the locking plate to the abutment surface 6 on the bogie, preventing the bogie from moving towards the lock. In the normal opening of the lock, the unintentional movement of the locking plate to the rear locking position is initially prevented by the cam 8 until the side surfaces leading to the bogie mating surface 6 keep the locking plate in the free position.

The invention is not limited to the embodiment shown, but several variations thereof are conceivable within the scope of the appended claims.

Claims (7)

A door lock with a latch (1), a locking plate (3) and preferably two symmetrically two transmission members (7) having guide surfaces arranged in such a way that either the latch (1) or the locking plate (7) can be acted upon by rotating the transmission member (7) in different directions. 3), characterized in that the locking plate (3) is a member separate from the axle (1), preferably on both sides of the longitudinal axis of the bogie there is a stop surface (5), and that the locking plate (3) and said stop surfaces (5) together 3) with the guide surfaces of the acting transmission members (7) is arranged to guide the locking plate (3) so that when either of the transmission members (7) is rotated in the opposite direction to the opening direction of the bogie the stop surface (5) of the locking plate (3) abuts the bogie movement of the bogie relative to the locking plate (3) towards the lock. Door lock according to Claim 1, characterized in that the locking plate (3) is rotatably mounted. Door lock according to Claim 2, characterized in that the locking plate (3) is rotatably mounted on a member (4) which also acts as a stop for the bogie (1). Door lock according to one of the preceding claims, characterized in that the transmission element (7) has two cams (8, 9), one of which is arranged to act on the bar (1) and the other on the locking plate (3). 4 PATENT CLAIMS 6791 0 A door lock according to claim 4, characterized in that one of said two cams (8,9) is arranged to hold the locking plate (3) in the free position at the beginning of the inward movement of the bogie at least until the bogie opposite surface (6) passes the locking plate stop surfaces (5) . Door lock 5 67910 according to one of the preceding claims, characterized in that it is provided with spring members (10) acting on the transmission elements (7), which have a steering effect on the normal position of the torsion plates and which preferably act simultaneously in the locking direction of the transmission elements (7). as restraints of movement. A door lock according to claim 6, characterized in that the spring member is a flat spring (10) placed over the lock housing.