DE2734043C2 - Furniture inlet lock - Google Patents

Description

marked by
feature com'aination:

ίο

following Gesanrt- - °

A. - that the guard locking in itself known

Way as a swivel tumbler (15) with one outside the range of rotation of the Key bit (11) arranged pivot pin (14) is formed,

B. - that the pivot pin is approximately in the middle

between the key bit attack (22) and the sliding bolt lock (13 in 21) or is arranged between this center and the key bit and

C. - That the Schwenkzuhaliung (15) in the area

of the key bit tangntfs (22) with a slender Te. ^; '(17) surrounds the key bit (11) and this part is adapted with its outer contour to the curvature of the inner wall of the housing (4).

2. Furniture inlet lock according to claim 1, characterized in that

that the eye of a torsion spring (13) is arranged on the pivot pin (14),
which is supported with its one spring leg on the inner wall of the housing (4)
and the other spring leg of which rests against a driver (18) formed on the swivel tumbler (15) and engages with its extended, bent end as a lock in the locking recess (21).

3. Furniture inlet lock according to claim 1, characterized in that

that the eye of a torsion spring is arranged on the pivot pin,
which is supported with its one spring leg on the inner wall of the housing
and whose other spring leg rests on the swivel tumbler,

which engages with a pin formed on the swivel tumbler as a lock in the locking recess .

4. Furniture inlet lock according to one of the preceding claims, characterized in that the Swivel tumbler (15) consists of a self-lubricating plastic.

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60 The invention relates to a furniture inlet lock with a cylindrical housing and a centrally located key-hole according to the preamble of claim 1.

A furniture inlet lock of this type is known from DE-AS 22 04 847. It's easy by means of a cylindrical hole in a furniture door ο. the like and has due to the central arrangement of the Keyhole for the furniture manufacturer has the advantage that the furniture door is independent of the later right or left use of the door can be pre-drilled or prefabricated.

Due to the central keyhole and the corresponding off-center arrangement of the Axis of rotation of the Drehschlüosels as well as through the fixed given dimensions of the key bit and thus the range of rotation of the rotary key bit results a certain minimum diameter of the cylindrical housing, which cannot be fallen below. This is seen as disadvantageous by the furniture industry. The aim is to be as small as possible Housing diameter, for example of only 35 mm, because then the furniture locks with the usual Cup drills for drilling in cup hinges o. The like. Can be inserted.

In the previously known DE-GM 17 41 131 is with reference to a box-shaped mortise lock to reduce the outer width of the lock case proposed for connecting lock plate and lock cover and to use only two so-called double spikes to guide the sliding bolt, which are next to the Slide bolt and are arranged outside the range of rotation of the rotary key bit. The one double thorn which is arranged on the same side of the sliding bolt as the sliding bolt lock is used at the same time as a pivot pin of a spring-loaded pivot tumbler, which is plate-shaped and inherently stiff is formed and a recess shaped as a closed inner curve for the key bit attack has the one on the opposite of the sliding bolt locking Side of the guard locking takes place. This proposed construction for a box-shaped mortise lock however, it also requires a certain minimum width so that it can be used in conjunction with a Inlet lock with a cylindrical housing no significant reduction in the housing diameter in the Comparison to the above-described cylindrical inlet lock according to DE-AS 22 04 847 allows.

A swivel tumbler made of plastic is known from DE-GM 17 79 712.

The object of the invention is to provide a furniture inlet lock with a cylindrical housing and a central keyhole to train the pre-set type so that the desired small diameter of z. B. only 35 mm is attainable.

This task is achieved by the overall combination of features according to the characterizing part of claim 1 solved.

Due to the predetermined positioning of the pivot pin of the pivot tumbler, the radially outwardly directed adjustment movement of the swivel tumbler in the area of the key bit attack in a greater or at least approximately the same opening movement of the sliding bolt lock translated, so that in Combination with the slender shape and with its outer contour the curvature of the inner wall of the housing adapted part of the swivel tumbler even in confined spaces in the area of the

Key bit attack, d. H. with only small adjustment movements always a perfect lock function through sufficient opening and closing movements of the Locking bolt lock is guaranteed. This minimization of the space available in the The area of the key bit attack on the swivel tumbler enables the desired small housing diameter for furniture entry locks of this ArL

Appropriate further developments of the subject matter according to claim 1 are set out in the subclaims

In an embodiment of the lock with a torsion spring according to claim 2, a special Achieved space-saving structure, the assembly of the aforementioned torsion spring by the Insertion or engagement of the extended bent end of a spring leg in the locking recess is simplified

It is also advantageous to manufacture the swivel tumbler from a self-lubricating plastic.

An exemplary embodiment is shown in the drawing. Show it

Fig.! and 2 two cuts through the furniture inlet lock in levels I-I and II-II in Fig. 3,

3 shows the cross section according to section IH-III in FIG

The furniture inlet lock shown has a cylindrical housing 4 with a screw-on plate 5 and a cranked sliding bolt 7, the bolt head 6 of which protrudes from the plane of the screw-on plate

The sliding bolt 7 has a total of four projecting pins 8 and is designed to be symmetrical on the side insert it either in locks that can be used on the right or left. The bolt is through external parallel shoulders 9 and guided through the elongated hole 10 encompassing the mandrel 12.

Outside the range of rotation of the key bit 11, a pivot pin 14 is attached in the housing 4, the serves to support the pivot tumbler 15 and to support the eye of the torsion spring 13. The housing cover 20 is riveted to the head of the pivot pin 14.

The torsion spring 13 is supported with its one spring leg on the inner wall of the housing 4 and engages with the extended bent end of its other spring leg as a lock in the locking recess 21 a, this spring leg at the same time formed on one of the swivel tumbler 15 Driver 18 is applied.

The pivot tumbler 15 is plate-shaped and inherently rigid. She owns one as closed Inner curve shaped recess into which the key bit 11 engages. Part 17 of the swivel tumbler, which grips around the key bit 11 is slim

shaped and adapted to the curvature of the inner wall of the housing 4 with its outer contour The part 16 of the swivel tumbler possesses a lower reinforcement 19, which acts as an end stop for the movement the swivel tumbler serves downward as shown

F i g. 1 shows a central section through the furniture inlet lock in level I-I according to FIG. 3, the swivel tumbler lying in front of the plane in the viewing direction 15 and the turning circle of the key bit 11 are indicated by dashed lines. The cranked sliding bolt 7 is in FIG. 1 shown in the enclosed state, the key bit 11 is aligned with the centrally located one Keyhole (not shown).

When closing clockwise, the outer edge of the key bit 11 moves along the The turning circle indicated by dashed lines and engages in the area of the in FIG. 1 drawn key bit attack 22 on the inner curve of the swivel tumbler 15. The resulting radially outward direction The swivel tumbler turns the adjusting movement of the swivel tumbler into an opening motion of the Bolt lock translated d. n. by means of the driver 18 attached to the swivel tumbler, the Leg spiral spring 13 lifted out of the front locking recess 21. This position is shown in FIG. 2 With a further turn of the rotary key, the bolt head 6 is excluded and through the Engagement of the bent end of the torsion spring 13 in the rear locking recess 21 is locked

From Fig. 1 it can be seen that in the illustrated embodiment, the pivot pin 14 is arranged approximately in the middle between the key bit handle 22 and the sliding bolt lock. From it this results in a transmission ratio of approximately 1: 1 for the adjustment movement of the swivel tumbler in the area the key bit attack to the opening and closing movement of the sliding bolt lock. These Translation is enough in combination with the slim shape and with its outer contour to the Curvature of the inner wall of the housing molded part 17 to in practice an outer housing diameter *: he to achieve from 35 mm, as z. Is currently required by the furniture industry. Becomes an even smaller one If the housing diameter is desired, then a transmission ratio can be used > 1 can be achieved in that the pivot pin 14 is closer to the area of the Key bit attack 22 is offset. In this case, even smaller adjustment movements are sufficient Pivot tumbler in the area of the key bit attack 22 and yet the lock function remains through Defined and sufficient opening and closing movements of the sliding bolt lock guaranteed.

1 sheet of drawings

Claims (1)

Patent claims: 1. Furniture inlet lock - with a cylindrical housing, - with a central keyhole arranged in the middle of the housing, - with a sliding bolt operated by a rotary key - as well as with a spring-loaded, lying on the sliding bolt and at right angles to it movable, rigid plate-shaped tumbler, - which has a recess designed as a closed inner curve into which the key bit intervenes, - The key bit attack on the inner curve on the opposite of the sliding bolt lock Side of the guard locking takes place.